JPH07156799A - Air-conditioning duct structure for railroad rolling stock - Google Patents

Abstract

PURPOSE:To form a ceiling surface of good design by using reinforcing molds each of which is molded into a U-cross section so that they can be fitted into a metallic reinforcing plate as molds to be installed on the inner surface of the metallic reinforcing plate at intervals along the longitudinal direction of the metallic reinforcing plate and each having a cross-sectional form comprising two orthogonal sides. CONSTITUTION:A reinforcing plate 6 is formed by press molding an aluminum- alloy plate into a U-shape, with supporting flanges integrated with both ends of the plate 6 for mounting a vehicle body. An opening of the same planar configuration as and slightly greater than the bead punched form of a molding panel 5 is provided in the middle planar portion of the reinforcing plate 6. The reinforcing plate 6 can therefore be mounted without interfering with the upper side of the molding panel 5. Reinforcing molds 7 each have a cross section taking the form of a hat with at least two orthogonal sides and are welded to the inside of the reinforcing plate 6 at predetermined intervals after being molded into a U-shape along the side 3c and the lower surface 3d of an air- conditioning duct.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning duct structure for a railway vehicle, and more particularly to an air conditioning duct structure for a railway vehicle which is suitable for being installed on a cabin surface such as a ceiling portion of a passenger cabin.

[0002]

2. Description of the Related Art Conventionally, in an air-conditioning duct provided in the ceiling of a railroad vehicle, when a duct structure in which the bottom of the duct is also used as an interior material, reinforced fiber plastic (hereinafter referred to as FRP) is often used as a ceiling member. It has a characteristic that the surface can be smoothly curved or formed into a three-dimensional structure from a decorative point of view.

In addition, instead of the FRP ceiling member,
Use a laminated plate manufactured by a method in which a synthetic resin film is co-extruded on the surface of a metal plate by an extruder and laminated in a molten state, and sandwich the foamed resin of a building member between the laminated plate and another metal plate, and press. The molded product is used as a ceiling member. A related example of such a laminated plate is, for example, JP-A-63-306032.

[0004]

The ceiling member made of FRP is heavy in weight, requires complicated work such as heat molding when molding using a mold, requires a lot of manufacturing time, and is costly. Expected to be high. Further, it is difficult to obtain a dimensionally high-precision product, and it has been necessary to perform a matching process on an existing vehicle at the time of assembly. Furthermore, if a ceiling member is made by sandwiching foamed resin, etc. of a building member between a laminated plate and another metal plate, and using it as a ceiling member, it will take a lot of time for processing and assembly and flat molding will become the mainstream. It was difficult to make it into a three-dimensional shape considering the design. It is difficult to recycle and use the FRP, and even when a laminated plate is used, it is necessary to sort the used members.

An object of the present invention is to provide an air conditioning duct structure for a railway vehicle which can form a ceiling surface having a shape with a good design by using a metal member having excellent workability.

[0006]

[MEANS FOR SOLVING THE PROBLEMS] A molded panel in which a resin sheet material is provided on the outer surface of a metal plate and molded into a substantially U-shaped cross section, and an inner surface U of the molded panel which can be fitted to the molded panel. A metal reinforcing plate having a cross section and provided with a supporting flange at the widthwise end, and a mold member installed on the inner surface of the metal reinforcing plate at a constant interval in the longitudinal direction of the metal reinforcing plate. It is characterized by comprising a reinforcing mold member having a U-shaped cross section that can be fitted to a metal reinforcing plate.

[0007]

In the molded panel, a relatively thin plate material is used in consideration of sticking the sheet material at the time of integral molding, and has a structure in which deformation after molding easily occurs. The deformation of the molded panel, especially the warp in the longitudinal direction, is suppressed and the shape is adjusted by the metal reinforcing plate. That is, since the metal reinforcing plate has a substantially U-shaped cross section and a flange is formed at an end thereof, it has a predetermined bending rigidity in the longitudinal direction and can suppress warpage of the molded panel. it can. Further, since the dimensional accuracy and the rigidity of the metal reinforcing plate with respect to the U-shaped cross-sectional shape are insufficient due to its structure, by providing a reinforcing mold member formed in the U-shape, the cross-sectional shape of the metal reinforcing plate is accurate. It is possible to provide sufficient rigidity while ensuring the. Therefore, it is possible to form an air conditioning duct with high dimensional accuracy, ensure sufficient strength, and easily manufacture.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 are views showing a ceiling panel 4 according to the present invention. FIG. 6 is a diagram showing a ceiling structure of a railway vehicle, and FIG. 7 shows details of an air conditioning duct in the ceiling structure.

As shown in FIGS. 6 and 7, the ceiling structure of a railway vehicle is constructed by installing an air conditioning duct 3 and a ceiling panel 4 inside a roof structure 1. Ceiling panel 4 A plurality of things are continuously arranged in the longitudinal direction of the vehicle body to form a ceiling surface in the passenger compartment, and side surfaces 3c and a lower surface 3d of the air conditioning duct 3. The cool air blown from the cooler unit 2 set on the roof structure 1 flows in the air-conditioning duct 3 in the longitudinal direction of the vehicle body, passes through the side outlets 3a, and is blown into the passenger compartment from the passenger compartment outlet 3b.

The ceiling panel 4 includes a molded panel 5 made of aluminum alloy by press molding, a reinforcing plate 6 made of aluminum alloy, a reinforcing mold material 7 made of aluminum alloy, a vinyl chloride type cosmetic sheet 8, rivets 9, and plate rivets. It consists of 10. The ceiling panel 4 is configured by using a molded panel 5 as a basic member, which is obtained by mechanically pasting a chloride vinyl decorative sheet 8 obtained by applying an adhesive to a plate material made of an aluminum alloy and then performing integral press molding. The molded panel 5 has a three-dimensional molded portion formed on an intermediate flat surface portion. As the three-dimensional molding part, for example, width 30 mm, length 800 m
m, the height of about 3 mm, the beading-out molding is performed in the longitudinal direction with a pitch of about 180 mm. The reinforcing plate 6 is attached to the upper surface of the molded panel 5.
The reinforcing plate 6 is made of an aluminum alloy plate material in a U shape.
The support flanges for mounting the vehicle body are integrally press-molded at both ends thereof. The intermediate flat portion of the reinforcing plate 6 has the same planar shape as the bead-embossed shape of the molded panel 5, and has a slightly larger opening hole. Thereby, the reinforcing plate 6 is attached without interfering with the upper surface of the molded panel 5. The cross-sectional shape of the reinforcing mold member 7 is a hat shape having at least two orthogonal faces, and is attached to the inside of the reinforcing plate 6. It is carried out and attached at a predetermined interval by welding.

Molded panel 5 having a bead embossed shape
The bead launching improves the appearance and rigidity when viewed from the inside of the passenger compartment. However, the molded panel 5 after press molding does not maintain a uniform flat ceiling surface and is warped. This is because a thin plate material is used in order to reduce the damage to the sheet and facilitate the forming by deep drawing. In addition, the shape of the press, the friction between the press member and the forming die, the difference in the degree of distraction of the press member, the temperature, and the like influence. As a warp removing means for the molded panel 5, a reinforcing plate 6 is attached to the upper surface of the molded panel 5. The reinforcing plate 6
Is a press-formed aluminum alloy plate material as described above, and constitutes the skeleton of the ceiling panel 4 and the side surfaces 3c and the lower surface 3d of the air conditioning duct 3.
When the reinforcing plate 6 is mass-produced due to a large variation in accuracy due to press molding, it does not maintain usable accuracy as the air conditioning duct 3, and the side surface 3c is difficult to bend and press at a right angle to the lower surface 3d. As a countermeasure against this, the reinforcing mold member 7 is adhered to the inside of the reinforcing plate 6 and attached by the rivet 9. The reinforcing member 7 is bent and welded into a skeleton such that the side surface 3c of the air conditioning duct 3 is at a right angle to the lower surface 3d. Therefore, the aluminum reinforcing plate 6 can be manufactured so that the side surface 3c and the lower surface 3d of the air conditioning duct 3 are perpendicular to each other even if there are many variations due to press molding. At the time of attaching the reinforcing mold member 7 and the reinforcing plate 6, on the lower surface 3d of the air-conditioning duct 3, a fastening member plate rivet 10 having a dish-shaped head is used to prevent interference with the mounting surface with the molding panel 5. .

When the reinforcing plate 6 is attached to the inner surface of the molded panel 5, the reinforcing plate 6 is attached with adhesive and rivets 9. In particular, the portion that contacts the end of the molded panel 5 is attached with a rivet 9 in order to prevent the adhesive from peeling off. Molded panel 5
Since the ceiling surface of the above is press-formed in a concave shape, the reinforcing plate 6 is previously cut out in the concave shape range of the molded panel 5. Therefore, the reinforcing plate 6 is advantageous in preventing interference with the concave shape of the molded panel 5 and reducing the weight of the ceiling panel 4 as a whole.

In the above embodiments, an example in which the base material is an aluminum alloy plate has been described, but the present invention is not limited to this, and if the material has good press formability, for example, a steel plate, A stainless plate or the like may be used. Further, the cross section of the reinforcing mold member 7 has a hat shape, but may have another shape. As a method of maintaining the rigidity of the ceiling panel 4, a structure in which the upper portion of the reinforcing plate 6 is connected by a reinforcing mold member may be considered in addition to the use of the reinforcing mold member 7. Also, the reinforcing plate 7
The same effect can be achieved by other methods such as attaching a square plate to the lower bent portion of the. Further, the ceiling panel 4 may be assembled by using other fastening methods such as bolts and welding other than the adhesive and the rivet.

[0014]

As described above, according to the present invention, the ceiling surface and the air-conditioning duct surface in a railway vehicle can be warped to prevent distortion, and can be manufactured with high accuracy, light weight, and in a short period of time.

[Brief description of drawings]

FIG. 1 is a perspective external view of a ceiling panel in an air conditioning duct structure according to an embodiment of the present invention as seen from above.

FIG. 2 is a perspective external view of the ceiling panel of FIG. 1 viewed from below.

FIG. 3 is a cross-sectional view taken along the line AA of the ceiling panel in FIG.

FIG. 4 is a cross-sectional view taken along the line BB of the ceiling panel in FIG.

5 is a cross-sectional view taken along line CC of the ceiling panel in FIG.

FIG. 6 is a cross-sectional view in the vehicle width direction showing the arrangement of the air conditioning duct at the ceiling according to the present invention.

FIG. 7 is a detailed view of an air conditioning duct portion of FIG.

[Explanation of symbols]

3 ... Air conditioning duct, 4 ... Ceiling panel, 5 ... Molded panel, 6
... Reinforcement plate, 7 ... Reinforcement mold material, 8 ... Makeup sheet, 9 ... Rivet, 10 ... Plate rivet.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinji Kobayashi 794 Azuma Higashitoyo, Kudamatsu City, Yamaguchi Prefecture Hitachi Ltd. Kasado Plant

Claims (2)

[Claims] 1. A molded panel in which a resin sheet material is provided on the outer surface of a metal plate and molded into a substantially U-shaped section, and a U-shaped section installed on the inner surface side of the molded panel and capable of being fitted to the molded panel. A metal reinforcing plate having a supporting flange at the end in the width direction and formed on the inner surface of the metal reinforcing plate at regular intervals in the longitudinal direction of the metal reinforcing plate. An air-conditioning duct structure for a railway vehicle, comprising: a mold member having a cross-sectional shape; and a mold member having a U-shaped cross section that can be fitted to the metal reinforcing plate. 2. The air conditioning duct structure for a railway vehicle according to claim 1, wherein the molded panel has a three-dimensional molded portion protruding toward the inner surface side in an intermediate plane portion thereof, and the metal reinforcing plate is the An air-conditioning duct structure for a railway vehicle, which is characterized by forming an opening into which a three-dimensional molded portion can be fitted.