JPH05138778A - Laminated panel and production thereof - Google Patents

Abstract

PURPOSE:To provide a panel capable of reducing a stress at corner parts thereof in a laminated panel for a structure. CONSTITUTION:In a honeycomb panel provided with bonding members 60, 61 to be welded on the peripheral part thereof and a honycomb core 55 inside the members 60, 61, linear reinforcing members 65 are provided on corner parts of the two bonding members disposed orthogonally to each other. The reinforcing members 65 are provided between two face plates 51 or the like. On the lower plate, the core 55, the bonding members 60, 61, and the reinforcing members 65 are placed, and thereon the face plate 51 is placed and brazed. The oblique line of the reinforcing member 65 is set at an angle of 30 degrees (60 degrees) to the bonding member 61 (60). Since the reinforcing members are provided on the corner parts, a stress at the appropriate parts can be reduced, and a light-weight panel can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated panel in which a core having a large number of cells in contact with two face plates is arranged between the two face plates, and a method of manufacturing the same.

[0002]

2. Description of the Related Art In a railway vehicle running at a high speed, problems such as an increase in impact on tracks, an increase in noise generated during running, and an increase in operating power cost occur as the speed increases. In order to solve this problem, it is required to reduce the weight of the railcar body.

On the other hand, it is known that when a railway vehicle travels in a tunnel at a high speed, the pressure outside the vehicle suddenly changes. In particular, large pressure fluctuations occur in a short time when vehicles pass each other in a tunnel. In order to prevent such pressure fluctuations from being transmitted to the inside of the vehicle and causing discomfort to passengers, the entire vehicle body has an airtight structure. Therefore, the load of passengers and various devices, the weight of the vehicle body itself, and the pressure due to the pressure fluctuation outside the vehicle act on the vehicle body. Therefore, it is necessary to improve the rigidity of the vehicle body and the strength against a pressure load.

From these points of view, it has been proposed to join a brazing honeycomb panel made of a light alloy by welding to form a vehicle body. The honeycomb panel has a core having a large number of hexagonal cells arranged between two face plates. Further, a thick connecting member is arranged on the outer peripheral portion between the two face plates. The two face plates, the core, and the connecting member are brazed and integrated with the adjacent members. The honeycomb panels are welded to each other at the connecting members, and also to bones (columns or the like) to form one vehicle body. This vehicle body is disclosed in Japanese Patent Laid-Open No. 03-90468.

[0005]

Since the honeycomb panel is used, the weight of the vehicle body is reduced. However, a large stress acts on the joints between the honeycomb panels and the joints with the bone members such as columns, that is, the corners of the honeycomb panels.

In order to prevent this, it is conceivable to increase the thickness of the face plate of the panel or the thickness of the core. With this, the weight of the honeycomb panel is increased. On the other hand, it is conceivable to reduce the size of the honeycomb panel and increase the number of bones. This also increases the weight. Further, the welding work requires a lot of time.

It is an object of the present invention to provide a honeycomb panel which is lightweight and has a small stress generated at the corners of the honeycomb panel.

[0008]

SUMMARY OF THE INVENTION The present invention comprises two face plates and a plurality of face plates disposed between the two face plates for joining the two face plates and connecting the two face plates to each other. A core having cells, a plurality of strength members arranged between the two face plates and joined to the two face plates, and two strength members arranged between the two face plates and substantially intersecting at one point. A linear reinforcing member that is arranged to be inclined with respect to the strength member, the longitudinal end of the reinforcing member is located in the vicinity of the strength member, and the reinforcing member is the two strength members. , Joined to at least one of the two face plates and the core.

[0009]

For example, two reinforcing members that are orthogonal to each other are joined by a reinforcing member that is obliquely arranged. Therefore, the load flow is smoothly dispersed without sudden change, so that stress concentration generated in this portion can be relaxed.

[0010]

EXAMPLE A honeycomb panel according to an example of the present invention will be described below with reference to FIGS.

The honeycomb panel 50 has two face plates 51, 5
2, cores 55 forming a large number of hexagonal cells S, and coupling members 60, 61 arranged on the outer peripheral portions of the face plates 51, 52.
And a reinforcing member 65 arranged at a corner (corner). The core 55, the connecting members 60 and 61, and the reinforcing member 65 are 2
It is arranged between the face plates 51 and 52. These are made of aluminum alloy. These members are integrally formed by brazing with the contacting members.

The connecting members 60 and 61 have a channel-shaped cross section, and have parallel horizontal pieces facing outward. The tip of this horizontal piece serves as a welded portion between the honeycomb panels 50, 50 or other structural members (for example, a beam or a bone in a vehicle body). The vertical pieces of the connecting members 60 and 61 are orthogonal to the face plates 51 and 52. Each piece is thick. The coupling members 60 and 61 also have a function as a strength member.

The face plates 51 and 52 are rectangular. The reinforcing members 65 are arranged at the corners of the honeycomb panel 50. The reinforcing member 65 has a triangular shape when viewed from the face plates 51, 52 side.
The angle of the diagonal pieces is 30 ° (60 °). The reinforcing member 65 includes a diagonal piece 65a and a triangular piece 65 that contacts the face plates 51 and 52.
b, 65c. The reinforcing member 65 is formed by bending a plate or welding the plate. Or, the extrusion mold material is 30 °
It is configured by cutting at (60 °). Alternatively, it is manufactured by casting. The contact surface between the reinforcing member 65 and the connecting members 60 and 61 is the end surface of the plate of the reinforcing member 65. When the contact surface is insufficient, each piece 65a, 65b, 65c of the reinforcing member 65 is bent to provide the contact surface. This contact surface should be close to the slope.

The core 55 is composed of a number of thin plates 55a arranged side by side. The plate 55a is orthogonal to the face plates 51 and 52. The cell S is in contact with the face plates 51 and 52. The end surface of the plate 55a of the corner core 55 is in contact with the oblique piece 65a of the reinforcing member 65. The core 55 is formed by brazing in advance, and is brazed again together with the face plates 51 and 52, the reinforcing member 65, and the connecting members 60 and 61. Or
Alternatively, the connecting members 60 and 61, the reinforcing member 65, and a number of plates 55a may be arranged on the face plate 52, and the face plate 51 may be placed and then brazed. In the latter case, the plate 55a is a plate bent to have hexagonal cells.

In brazing, a brazing material is placed on the surface next to each member. Plates 55a, 5 constituting the core 55
The contact surfaces of the 5a, the facing surfaces of the face plates 51 and 52 (that is, the surfaces that contact the core 55, the coupling members 60 and 61, and the reinforcing member 65), and the vertical surfaces of the coupling members 60 and 61 (that is, the core 5).
5 and the surface contacting the reinforcing member 65), the oblique piece 6 of the reinforcing member 65
5a (that is, the surface in contact with the core 55). By brazing, the plates 55a, 55a are connected to each other to form the core 55, and the core 55 includes the face plates 51, 52 and the connecting members 60, 61.
Of the reinforcing member 65, the respective surfaces of the reinforcing member 65 are connected to the flat plates 51 and 52, the vertical surfaces of the connecting members 60 and 61, and the core 55, and the respective surfaces of the connecting members 60 and 61. Is connected to the face plates 51, 52, the reinforcing member 65, and the core 55. Of course, it is necessary to control the size of each contact surface so that brazing can be performed.

As described above, the honeycomb panel 50 having the reinforcing member 65 can be manufactured by an ordinary honeycomb panel brazing process. Therefore, it can be manufactured at low cost.

A connecting member 6 having orthogonal corners where stress concentrates.
Since the linear reinforcing member 65 (in particular, the slanting piece 65a) is arranged at 0, the stress generated in each part can be reduced. Therefore, the thickness of the connecting members 60 and 61 can be reduced, the plate thickness of the face plates 51 and 52 can be reduced, and the cells of the core 55 can be enlarged and the weight can be reduced.

In FIG. 3, a plate 55 forming the core 55.
The longitudinal direction of a is the left-right direction (lateral direction). The core 55 is joined to the connecting member 61 arranged in the lateral direction. The position of the end of the plate 55a joined to the connecting members 60, 60 arranged in the vertical direction is set to be half of the length of the side parallel to the horizontal direction among the six sides forming the cell S of substantially regular hexagon. The position. This is the same for the left and right ends of the plate 55a.

The reason why the angle of the inclined surface 65a of the triangular reinforcing member 65 is 30 ° (60 °) will be described with reference to FIG. The cells S of the core 55 are substantially regular hexagons. Therefore, the corner S formed by the two sides of the cell S is formed.
If you connect e with a straight line, the angle of the straight line is 60 °
(30 °). That is, the angle is half the angle formed by the two sides that form part of the cell. Therefore, the positions of the end portions of the plurality of plates 55a in contact with the inclined pieces 65a of the reinforcing member 65 are all corner portions Se. That is, in FIG. 3, a part of the diagonal piece 65a substantially constitutes one side of the regular hexagonal cell S. However, when viewed from the individual plates 55a, there are the following two positions of the ends of the plate 55a. One of them is that the corner portion Se from the lateral side to the diagonal piece 65a in FIG.
This is the case when the end portion is 5a. The other one is shown in FIG.
In this case, the corners Se extending from the diagonal pieces 65a to the lateral sides are the ends of the plate 56. The above two ends are alternately arranged. This is the same at the left and right ends. When viewed with one plate 55a, the positions of the left and right ends are the same.

Therefore, the cutting position of one plate 55a which is in contact with the oblique piece 65a of the reinforcing member 65 is line-symmetric in the longitudinal direction. Therefore, although there are two types of cutting positions, since the cutting is performed at the corners Se, the management of the cutting position becomes easy. This is easy to understand as compared with the case where the angle of the slope of the reinforcing member 65 is set to, for example, 45 °.

The embodiment shown in FIG. 4 is an example in which the cutting position of the plate 55a is a position other than the corner Se of the cell S. The cell S formed by the diagonal pieces 65a of the reinforcing member 65 does not become a regular hexagon. Also by this, the distance from the corner portion Se can be made two types, and the management of the cutting position is easy.

The position of the end of the plate 55a in contact with the connecting members 60, 60 may be the position of the apex of the hexagonal cell S. In this case, the effect of 30 ° (60 °) is the same.

In the embodiment shown in FIG. 5, the oblique piece 65a of the reinforcing member 65 is used.
This is a case in which the angle formed by and the connecting member 61 is 30 °. The longitudinal direction of the plate 55a of the core 55 is parallel to the connecting member 61. For this reason, the inclination angle of the inclined piece 65a is the plate 55a.
Is 30 ° with respect to the longitudinal direction. According to this, FIG.
As is clear from the above, the position of the end of the plate 55a in contact with the oblique piece 65a is the corner Se at the intersection of the oblique sides forming the cell S. The end of the plate 55a is orthogonal to the diagonal piece 65a. The cutting position of any of the plates 55a is also the position of the same corner Se. Therefore, work management can be facilitated. Plate 55a
The same applies to the cutting position of the side Sb perpendicular to the diagonal piece 65a.

In the embodiment shown in FIG. 6, the plate 55a is cut at the horizontal piece Sa of the cell S. Also in this case, the work management can be facilitated as in the case of FIG.

In the embodiment shown in FIG. 7, the honeycomb core 56 is arranged in the space within the reinforcing member 65 by brazing. According to this, as compared with the above-mentioned embodiment, the reinforcing member 6
The strength of the honeycomb panel 50 in the area 5 can be improved. Therefore, the degree of stress in this portion can be further reduced.
In addition, the inclined piece 65a and the upper piece 65 on the core 56 side of the reinforcing member 65
b, the lower piece 65b is provided with a brazing material so that it can be brazed. The core 56 is made of an aluminum alloy.

The embodiment shown in FIGS. 8 to 10 will be described. FIG. 10 shows the contact portions apart to show the direction of the plates 78a, 79a of the cores 78, 79.

A strength member 7 is provided in the vertical direction at the center portion in the left-right direction.
0 is set. The strength member 70 is a square pipe and is joined to the face plates 51, 52 and the core 55 by brazing. Further, the longitudinal end portion of the strength member 70 has a connecting member 6
It is joined to 1, 61 by brazing. Strength member 7
0 is thick. The reinforcing member 75 arranged at the corner is a plate, and there is no piece in contact with the face plates 51 and 52. The reinforcing member 75 is joined to the face plates 51 and 52 at the thickness of the plate. Reinforcement member 7
5 is a corner formed by the joining members 60 and 61, and the joining member 61
And the strength member 70. Two reinforcing members 75 are arranged in a V shape centering on the vicinity of the middle of the coupling member 60 and the strength member 70. The reinforcing member 75 is only the hypotenuse of the triangle. Honeycomb-shaped cores 78 and 79 are arranged in the spaces inside the two face plates 51 and 52.
The longitudinal direction of the plates 78a and 79a forming the cores 78 and 79 is the vertical direction. The length of the upper portion of the plate 79a of the core 79 arranged at the corner portion or the length in the vertical direction of each portion is shortened by the thickness of the reinforcing member 75. A brazing material is applied to each vertical surface of the strength member 70 and the reinforcing member 75. The strength member 70, the reinforcing member 75, and the cores 78 and 79 are made of aluminum alloy.

According to this, since the reinforcing member 75 is only the hypotenuse of the triangle, it can be made lighter than the embodiment shown in FIG. Also, the heights of the cores 78 and 79 can be made the same.

Since the reinforcing member 75 is plate-shaped, the contact area with the connecting members 60, 61 and the strength member 70 is small. 75
Reference characters a and 75b are contact pieces provided by bending the longitudinal ends of the reinforcing member 75, and include the connecting members 60 and 61 and the reinforcing member 7.
It becomes a contact part with 0. The contact pieces 75a and 75b are located in the cell. According to this, the generation of the unconfigured cell S can be prevented.

Another reinforcing member 75 close to the contact piece 75b
If there is, the two reinforcing members 7 are provided at the contact piece 75b.
Connect 5 to make one.

The strength member 70 is an aluminum alloy extruded material. The strength member 70 can be welded to the external strength member (bone member) 85 and the like via the face plates 51 and 52. Further, the strength member 70 can be a seat for fastening means such as a screw. The same applies to the coupling members 60 and 61. When the strength member 70 has a channel-shaped cross section, the side between two parallel sides is in contact with the face plate 11.

In the embodiments of FIGS. 8 to 10 and FIG. 7, the size of the cell of the core 56 of the triangular portion 56 on the corner side of the reinforcing member 75 or the diagonal piece 65a is changed to that of the cell of the core 55 of the other portion. If the size is smaller than the size, the strength of the corner portion is further improved. Although brazing is used as the joining means for joining the members in the laminated panels of the above-described embodiments, diffusion joining and resistance welding are conceivable. Further, the shape of the cell of the core is not limited to the hexagonal shape, and the inclination angle of the reinforcing member is set according to the shape of the cell.

In the embodiment shown in FIG. 11, the foam material 9 is applied to the cells S at the corners.
Filled with 0. On the lower face plate, connecting members 51, 5
2. After the core 55 is placed, the foam material 90 is put in the corners, the face plate is placed, and the brazing is performed by heating. Since the foam material 90 foams by heating during brazing, it can be manufactured simultaneously during brazing.

The examples shown in FIGS. 12 to 14 show a case where a vehicle body of a railway vehicle is constructed by using the honeycomb panel 50 described above. A vehicle body of a railway vehicle includes a floor portion 100, a wall portion (referred to as a side portion) 200 along a longitudinal direction of the vehicle, a roof portion 300, an intermediate portion 400 connecting the wall portion 200 and the roof portion 300, and the like. These parts 100, 200, 300,
In 400, the honeycomb panels 50 having a predetermined length are arranged along the longitudinal direction of the vehicle, and the joining members 60 are welded together to be integrated. And each part 200, 300, 400
The horizontal connecting members 61 are welded to each other to form the vehicle body. Although not shown, the strength member 70 is incorporated in the wall portion 200, the roof portion 300, and the intermediate portion 400 in the vertical direction and the horizontal direction, if necessary. This built-in strength member 70
The joint members 60 and 61 serve as mounting seats for the bone member and the interior member, if necessary. A coupling member 60 arranged in the circumferential direction of the vehicle body,
The strength members 70 are arranged in one row in the circumferential direction.

The application of the honeycomb panel 50 to the floor 100 is shown in FIGS. The floor portion 100 includes a honeycomb panel 50 that serves as a floor and an underframe. The underframe is composed of a side beam 210 along the longitudinal direction of the vehicle and a lateral beam 220 connecting the two side beams 210. The honeycomb panel 50 is mounted on this underframe. The joining member 61 of the honeycomb panel 50 is welded to the side beam 210. In the honeycomb panels 50, the upper and lower horizontal pieces of the joining members 60, 60 are welded to each other. In addition, the horizontal piece below the connecting members 60, 60 is the cross beam 2.
Welded to 20.

Side portion 200, middle portion 400, roof portion 300
Is an arc shape. Therefore, the plate 55 of the honeycomb core 55 is
The longitudinal directions of a and 78a are oriented in the longitudinal direction of the vehicle.
After forming the honeycomb panel 50 by brazing, bending is performed. The honeycomb panel 50 of the side portion 200 has a window 210. After the honeycomb panel having the window frame member 211 arranged between the face plates 51 and 52 is brazed,
Bend and drill holes 210. The frame material 211 is subdivided so that it can be bent. The arc-shaped panel can also be manufactured as follows. A lower arc-shaped face plate 52 is placed on the arc-shaped lower die, and the coupling members 60, 6 are placed on the lower face plate 52.
1, the strength member 70, the reinforcing members 65 and 75, the numerous plates 55a and 78a of the honeycomb cores 55 and 78, and the frame member 211 are placed, then the upper arc-shaped face plate 51 is placed, and the upper die is pressed. Perform brazing work. The lower mold has a concave upper surface, and the upper mold has a downward convex. The connecting members 60 and 61, the strength member 70, the reinforcing members 65 and 75, and the frame member 211 are the face plates 5.
The surface in contact with 1, 52 is arcuate. In addition, this surface is finished smooth. When the cross section of the strength member 70 has a channel shape, the side between the two parallel sides is an inner arc surface. The plates 55a and 78a of the honeycomb cores 55 and 78 are arranged such that their longitudinal directions are orthogonal to the direction of the arc of the mold (the longitudinal direction of the vehicle). Therefore, the plates 55a and 78a
Is orthogonal to the curved surface of the arc-shaped face plate 52, the ends of the plates 55a and 78a located inside in the radial direction contact each other,
The outer ends are separated from each other. If the distance between the separated portions is small, the ends are joined together by a brazing material. Therefore, an arc-shaped panel can be obtained.

[0037]

According to the present invention, it is possible to provide a honeycomb panel capable of relieving the stress concentration at the corners. Further, it can be manufactured by the same process as that for a normal honeycomb panel.

[Brief description of drawings]

FIG. 1 is a plan view of a laminated panel according to an embodiment of the present invention.

2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is an enlarged plan view of a main part of FIG.

FIG. 4 is a plan view of a main part of a laminated panel according to another embodiment of the present invention.

FIG. 5 is a plan view of a main part of a laminated panel according to another embodiment of the present invention.

FIG. 6 is a plan view of a main part of a laminated panel according to another embodiment of the present invention.

FIG. 7 is a plan view of a main part of a laminated panel according to another embodiment of the present invention.

FIG. 8 is a plan view of a laminated panel according to another embodiment of the present invention.

9 is a sectional view taken along line 9-9 of FIG.

10 is an enlarged plan view of a main part of FIG.

FIG. 11 is a plan view of a main part of a laminated panel according to another embodiment of the present invention.

FIG. 12 is a perspective view of a vehicle body of a railway vehicle according to an embodiment of the present invention.

13 is a plan view of the floor of FIG.

14 is a sectional view taken along line 14-14 of FIG.

[Explanation of symbols]

50 ... Honeycomb panel, 51, 52 ... Face plate, 55, 5
6, 78, 79 ... Core, 55a, 78a, 79a ... Plate,
60, 61 ... Coupling member, 65, 75 ... Reinforcing member, 65a
... oblique piece, 70 ... strength member, S ... cell.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Susumu Hirose 794 Azuma Higashitoyo, Shimomatsu City, Yamaguchi Prefecture Stock company Hitachi Kasado Factory (72) Inventor Morinari Hattori 794 Azuma Higashitoyo, Yamaguchi Prefecture Company Hitachi Ltd. Kasado factory

Claims (19)

[Claims] 1. A two face plate, a core disposed between the two face plates for joining the two face plates, the core having a large number of cells connected to the two face plates; A plurality of strength members arranged between the two face plates and joined to the two face plates, and inclined with respect to the two strength members arranged between the two face plates and substantially intersecting at a certain point. Consisting of a linear reinforcing member arranged,
An end of the reinforcing member in the longitudinal direction is located in the vicinity of the strength member, and the reinforcement member is joined to at least one of the two strength members, the two face plates, and the core; Laminated panel characterized by. 2. The laminated panel according to claim 1, wherein the reinforcing member is joined to the two strength members, the two face plates, and the core, respectively. 3. The laminated panel according to claim 1, wherein the cores are provided on both sides of the reinforcing member substantially orthogonal to the face plate. 4. The laminated panel according to claim 3, wherein the reinforcing member is coupled to the two strength members and the cores on both sides, respectively. 5. The laminated panel according to claim 1, wherein both ends of the reinforcing member in the longitudinal direction are respectively joined to the two strength members. 6. The laminated panel according to claim 5, wherein each end of the reinforcing member in the longitudinal direction is provided with a piece joined to the strength member, and the piece is located in the cell of the core. Laminated panel. 7. The laminated panel according to claim 1, wherein the reinforcing member is arranged at a corner formed by the two strength members, and the reinforcing member includes a piece for obliquely joining the two strength members,
A laminated panel comprising a piece joined to each of the face plates. 8. The laminated panel according to claim 7, wherein the piece joined to the face plate has a substantially triangular shape when viewed from the face plate side. 9. The laminated panel according to claim 1, wherein an angle formed by the strength member and one of the strength members is half of an angle formed by two sides forming cells of the core.
Laminated panel characterized by. 10. The laminated panel according to claim 9, wherein the cells are substantially hexagonal, and the angle formed between the one strength member and the reinforcing member is substantially 60 degrees.
Laminated panel characterized by. 11. The laminated panel according to claim 10, wherein a length of a side of the core which is in contact with the reinforcing member and which is in contact with the reinforcing member and which constitutes the cell is a side of a side which constitutes a regular cell. A laminated panel characterized by being substantially the same in length. 12. The laminated panel according to claim 9, wherein the cells of the core are substantially hexagonal, and the core is provided by arranging plates in parallel, the longitudinal direction of the plates and the reinforcing member. The laminated panel is characterized in that the angle formed by is substantially 30 degrees. 13. The laminated panel according to claim 1, wherein the reinforcing member is arranged at a corner formed by the two strength members, and the cores are respectively provided on both sides of the reinforcing member when viewed from the face plate side. Are arranged, the size of the cells of the core to be arranged in the triangular portion on the corner side of the reinforcing member is smaller than the size of the cells of the core in other portions,
Laminated panel characterized by. 14. A quadrangular face plate, a core for joining the two face plates, the plate having a plate substantially perpendicular to the face plate, and a core disposed along the four side edges of the quadrangle, Four joining members joined to the face plate, a linear reinforcing member placed between the two face plates and inclined with respect to the two joining members substantially orthogonal to each other, and joined to the joining member. Laminated panel consisting of. 15. The laminated panel according to claim 14, further comprising: a strength member that is arranged in parallel between the two connecting members between the two face plates and is joined to the two face plates. When viewed from the side, the core is provided on both sides of the strength member, the core is arranged between the two face plates, and is disposed so as to be inclined with respect to the coupling member and the strength member that are substantially orthogonal to each other, and is a linear shape joined to both. And a second reinforcing member. 16. A core which connects two face plates and which connects the two face plates and has a plate substantially perpendicular to the face plates,
A coupling member arranged outside the core and connected to the two face plates; and a reinforcing member arranged between the two face plates and arranged at a corner formed by the two substantially orthogonal coupling members. Laminated panel. 17. A quadrangular face plate, a core for joining the two face plates, the plate having a plate substantially perpendicular to the face plate, and arranged along the edges of the four sides of the quadrangle. A laminated panel comprising four connecting members joined to one face plate, wherein the strength of the four corner portions is set higher than that of the other portions. 18. Two face plates of a quadrangle, a core for joining the two face plates, the core having a plate substantially perpendicular to the face plates, and arranged along the edges of the four sides of the quadrangle. Four joining members joined to one face plate, and a linear reinforcing member placed between the two face plates and inclined with respect to the two joining members substantially orthogonal to each other, and joined to the joining members. A laminated panel consisting of, and the panel is used for at least one of a floor member, a roof member, and a wall member along the longitudinal direction of the vehicle, and the joining member is welded to the third member. Characteristic vehicle. 19. A pair of substantially orthogonal strength members composed of a plate and a cell orthogonal to the face plate on one face plate,
A reinforcing member inclined with respect to the two orthogonal strength members,
A method of manufacturing a laminated panel, which comprises the steps of: placing a plate, then placing a face plate on them, and then heating and brazing.