JP2019182307A - Body structure of railway vehicle and railway vehicle - Google Patents

Abstract

To provide a body structure of a railway vehicle including a heat insulating performance and a sound insulating performance.SOLUTION: A body structure 10 includes a structure body 11 and an interior material 13. The interior material 13 is disposed at a position closer to an internal space of a railway vehicle than the structure body 11. A bag body is disposed between the structure body 11 and the interior material 13. Gas is encapsulated inside of a membrane of the bag body. When the bag body is vibrated by the vibration of the structure body 11, microvibration in a membrane thickness direction is caused at a plurality of continuous portions in the membrane of the bag body.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a structure structure including a side structure of a railway vehicle, a structure structure including a underframe, a structure structure including a roof structure, and the like.

  In order to block the intrusion of heat from the outside of the railway vehicle, a heat insulating material is arranged between the structure of the railway vehicle and the interior material (Patent Document 1, etc.).

JP 2017-100657

  Although the heat insulating material has heat insulating performance and sound absorbing performance, it is conceivable to reduce the density and thickness of the heat insulating material when it is necessary to reduce the weight of the structure while securing the heat insulating performance. However, when the density and thickness of the heat insulating material are lowered, generally the sound absorption performance is lowered.

  Therefore, an object of the present invention is to provide a structure for a railway vehicle that has both heat insulation performance and sound insulation performance while reducing the weight compared to the conventional structure.

  The structure of a railway vehicle structure according to the present invention includes a structure, an interior material disposed closer to the interior space of the railway vehicle than the structure, and is disposed between the structure and the interior material. A gas-filled bag body, and when the bag body vibrates due to pressure fluctuation due to sound entering the structure from the outside of a railway vehicle, in the membrane, at a plurality of consecutive locations, Microvibration occurs in the thickness direction of the film.

In the above configuration, the pressure fluctuates in the space between the structure and the interior material due to sound entering from the outside of the vehicle. The film of the bag body is displaced by this pressure fluctuation. Thereby, in the film, slight vibrations in the thickness direction of the film occur at a plurality of consecutive locations. This vibration causes friction between the surface of the film and the gas enclosed in the film at a plurality of consecutive locations in the film. In the film, friction occurs between the surface of the film and the gas outside the film at a plurality of consecutive locations. Thereby, the energy of sound is converted into thermal energy. Therefore, it is possible to shield the sound that has entered from the outside of the vehicle. Therefore, it has sound insulation performance.
Further, since the gas is sealed inside the bag film, the range of movement of the gas is limited within the film. Therefore, the movement of heat by gas is limited. Therefore, heat transfer is suppressed. Thereby, heat insulation performance is provided.
Furthermore, the gas sealed inside the bag membrane is much lighter than conventional insulation. Therefore, the weight of the structure including the bag is lighter than the weight of the conventional structure. Moreover, the bag body itself is very lightweight. Therefore, there is no need to reduce the weight of the bag. Therefore, the density and thickness of the bag need not be reduced. Therefore, the sound insulation performance and heat insulation performance are not reduced by reducing the density and thickness of the bag.
Therefore, the structure having the above-described structure has both heat insulation performance and sound insulation performance while reducing the weight as compared with the conventional structure.

  In the above structure, the film preferably has flexibility, and the gas is preferably filled in the film.

  According to the above configuration, since the film of the bag body is flexible, slight vibrations in the thickness direction of the film occur in a large number of continuous minute regions in the film. For this reason, friction between the surface of the film and the gas enclosed in the film tends to occur. Also, friction between the surface of the film and the gas outside the film is likely to occur. Thereby, the energy of the sound which invaded from the outside of the vehicle is easily converted into heat energy. Therefore, the sound insulation performance is improved.

  In the above structure, the gas preferably contains, as a main component, an atom having an atomic weight smaller than that of air or a molecule having a molecular weight smaller than that of air.

  An atom having an atomic weight smaller than that of air and a molecule having a molecular weight smaller than that of air are light and thus move easily. Therefore, when the gas containing these atoms or molecules as the main component is sealed in the bag film, when the pressure in the film fluctuates due to the sound entering from the outside of the vehicle, the atomic or molecular movement in the film Tends to be intense. Therefore, sound energy is easily converted into heat energy. Therefore, the sound insulation performance is improved.

  In the above structure, the gas preferably contains, as a main component, an atom having an atomic weight larger than that of air or a molecule having a molecular weight larger than that of air.

  As the molecular weight or atomic weight of a gas increases, the thermal conductivity of the gas tends to decrease. By enclosing an atom having an atomic weight larger than the molecular weight of air or a molecule having a molecular weight larger than the molecular weight of air in the film, heat transfer by the gas in the film is further suppressed. This improves the heat insulation performance.

  In the above structure, the gas preferably includes, as a main component, at 0 ° C., an atom having a thermal conductivity smaller than that of air or a molecule having a thermal conductivity smaller than that of air.

  In the above structure, the gas preferably contains at least one of helium and neon as a main component.

  Since the atomic weight or molecular weight of the gas is relatively small, the gas is easy to move. Thereby, since gas tends to move with respect to pressure change due to sound, the energy of sound is easily converted into thermal energy. Therefore, the sound insulation performance is improved.

  In the above structure, the gas preferably includes argon as a main component.

  Argon has a low thermal conductivity. Moreover, since convection is suppressed by the bag, heat transfer by the gas in the film is further suppressed. This improves the heat insulation performance.

  Further, in the above configuration, a plurality of the bag bodies are disposed between the structure and the interior material, and the plurality of bag bodies include at least one first bag body in which a first gas is sealed; It is preferable to have at least one second bag body in which a second gas different from the first gas is enclosed. Moreover, it is preferable that one type of gas is enclosed in one bag.

  According to the said structure, the effect by the 1st gas enclosed by the 1st bag body and the effect by the 2nd gas enclosed by the 2nd bag body are acquired. For example, when a first gas whose main component is an atom having a small atomic weight is sealed in the first bag body and a second gas whose main component is an atom having a large atomic weight is sealed in the second bag body, the atomic weight is small. It is possible to improve both the sound insulation performance obtained by the first gas mainly containing atoms and the heat insulation performance obtained by the second gas mainly containing atoms having a large atomic weight.

  Moreover, in the said structure, it is preferable that the said some bag body is located in a line along the said structure.

  According to the said structure, since the some bag body is located in a line along the structure, the heat insulation effect and the sound insulation effect are acquired over the whole structure.

  Further, in the above configuration, a bag layer is formed by connecting a plurality of the bag bodies arranged along the structure, and the plurality of bag layers are formed between the structure and the interior material. It is preferable that the interior materials are laminated in a facing direction.

  According to the said structure, the heat insulation performance and the sound-insulation performance improve more because the several bag body layer is laminated | stacked between a structure and an interior material. Moreover, in each layer, since the several bag body is located in a line along the structure, heat insulation performance and sound insulation performance improve more over the whole structure.

  Further, in the above configuration, an intermediate material disposed between the structure and the interior material is further provided, the bag body is disposed between the interior material and the intermediate material, and the intermediate material includes the structure The first plate made of metal, the second plate made of metal, and the first elastically deformable first plate disposed between the first plate and the second plate. It is preferable to have a layer.

According to the above configuration, the intermediate member has a configuration in which the elastically deformable first layer is disposed between the two metal first and second plates. When vibration is transmitted to the intermediate material, shearing strain is generated in the elastically deformable first layer, so that vibration energy is converted into thermal energy, so that the vibration is attenuated.
Also, rubber materials are used as vibration damping materials in existing structure structures. A plurality of rubber materials are arranged in the structure at predetermined intervals. However, since the area of the structure is very large, a large number of rubber materials must be arranged in the structure. Furthermore, when placing rubber materials, it is extremely difficult to adjust the distance between two adjacent rubber materials for all rubber materials, or to adjust the height of all rubber materials to the same height. is required. Such work takes time and effort. On the other hand, the intermediate material having the above configuration extends along the structure. Therefore, it is not necessary to arrange a large number of intermediate materials at a predetermined interval as in the case where rubber materials are arranged. Further, it is not necessary to adjust the interval between the intermediate materials and the intermediate materials or to adjust the height of all the intermediate materials. Therefore, in the case of the configuration using the intermediate material, the intermediate material can be installed in the structure more easily and in a shorter time than when the conventional rubber material is used. Thereby, the assembly work of the structure structure can be simplified. Further, the time required for the assembly work of the structure can be shortened.
Further, since the vibration is attenuated by the intermediate material, the vibration propagating to the interior material is attenuated, and the vibration radiation sound radiated from the interior material is reduced.
Further, conventionally, an iron plate is disposed between the structure and the interior material in order to improve the sound insulation performance, but the weight of the iron plate is large. On the other hand, the intermediate material having the above configuration is not a single iron plate but a laminated body in which a first layer that can be elastically deformed is disposed between two metal first plates and second plates. By using the intermediate material having the above configuration instead of the iron plate, it is possible to improve the vibration damping performance and the sound insulation performance while reducing the weight of the structure.

  In the above configuration, the interior material includes a metal third plate, a metal fourth plate disposed closer to the space in the railway vehicle than the third plate, and the third plate and the third plate. A laminate in which an elastically deformable second layer disposed between the fourth plate and a fifth plate made of metal thicker than the thickness of the laminate is provided; It is preferable to be placed on a fourth plate and at a position closer to the space in the railway vehicle than the laminate.

According to the said structure, the 2nd layer which can be elastically deformed is arrange | positioned between two metal 3rd plates and 4th plates in an interior material. When vibration is transmitted to the interior material, shearing strain is generated in the elastically deformable second layer, so that vibration energy is converted into thermal energy, so that the vibration is attenuated.
Moreover, the vibration radiated sound radiated from the interior material is reduced by the vibration being attenuated by the interior material.
Moreover, since the interior material includes a metal fifth plate in addition to the laminate, the strength of the interior material is improved. Thereby, for example, when the structure structure having the above-described structure is adopted in a structure structure including a frame, it is possible to withstand even if a load is locally applied to the interior material serving as a floor.

  The railway vehicle of the present invention is a railway vehicle in which at least one of a structure structure including a side structure, a structure structure including a underframe, and a structure structure including a roof structure is the structure structure described above.

  By providing the structure structure described above, the railway vehicle has a heat insulation performance and a sound insulation performance. Moreover, by providing the structure having the above-described intermediate material, the railway vehicle has a sound insulation performance and a vibration damping performance while having a heat insulation performance.

  According to the present invention, by arranging a bag body in which gas is sealed between the structure body and the interior material, the structure structure of the railway vehicle has a heat insulation performance and a sound insulation performance.

(A) is a perspective view which shows the external appearance of the rail vehicle which concerns on 1st Embodiment, (b) is sectional drawing along the Ib-Ib line | wire of Fig.1 (a). It is a partially expanded view of the structure structure including the underframe. (A) is a side view of the bag layer of FIG. 2, (b) is a top view of the bag layer of FIG. It is a partial enlarged view of a structure structure including a side structure. (A) is the side view of the bag body layer of FIG. 4, (b) is the partially expanded view seen along the Vb-Vb line | wire of FIG. It is a partial enlarged view of the structure of the railway vehicle according to the second embodiment. FIG. 7 is a partially enlarged view of the intermediate material in FIG. 6. It is a partial enlarged view of the structure of the railway vehicle according to the third embodiment. (A) is a partially enlarged view of the intermediate material of FIG. 8, (b) is a partially enlarged view of the interior material of FIG. (A) is a side view of the bag body layer of a modification, (b) is a top view of the bag body layer of a modification. It is a partial enlarged view of the structure of a railcar according to a modification.

[First Embodiment]
FIG. 1A shows a schematic diagram of the railway vehicle 1. As shown in FIG. 1A, the railway vehicle 1 includes a roof structure 2, side structures 3 and 4, a frame 5, and a wife structure 6. In the railway vehicle 1, a ceiling plate 7 is disposed below the roof structure 2 as shown in FIG. Inside the railway vehicle 1, an internal space 8 surrounded by a ceiling board 7, side structures 3 and 4, a frame 5 and a wife structure 6 is formed. In FIG. 1B, only the roof structure 2 is shown in the structure structure including the roof structure 2, and configurations other than the roof structure 2 are omitted. FIG. 1B shows only the side structure 3 among the structure structures including the side structure 3, and the configuration other than the side structure 3 is omitted. FIG. 1B shows only the side structure 4 among the structure structures including the side structure 4, and the configuration other than the side structure 4 is omitted. In FIG. 1B, only the frame 5 is shown in the structure including the frame 5, and the configuration other than the frame 5 is omitted. The underframe 5 is a structure.

(Structure structure including underframe)
In FIG. 2, the frame 5 shown in FIGS. 1A and 1B is indicated as a structure 11. FIG. 2 shows a partially enlarged view of the structure structure 10 including the structure 11 (frame 5). In FIG. 2, the internal space 8 of the railway vehicle 1 is shown as inside the vehicle. In FIG. 2, the outside of the railway vehicle 1 is shown as outside the vehicle. Hereinafter, the internal space 8 of the railway vehicle 1 may be referred to as the inside of the vehicle, and the outside of the railway vehicle 1 may be referred to as the outside of the vehicle. In FIG. 2, hatching indicating a cross section is omitted.

  The structure structure including the structure 11 (the frame 5) includes the structure 11 (the frame 5), the intermediate material 12, and the interior material 13. The intermediate material 12 and the interior material 13 are arranged at a position closer to the internal space 8 of the railway vehicle 1 than the structure 11. The interior material 13 is disposed at a position closer to the internal space 8 of the railway vehicle 1 than the intermediate material 12. The structure 11 has a pair of flanges 21a and 21b. The elastic member 14 is disposed between the pair of flanges 21a and the intermediate member 12. The elastic member 15 is disposed between the pair of flanges 21b and the intermediate member 12. Between the structure 11 and the intermediate member 12, a plurality of elastic members (not shown) are arranged at predetermined intervals. A plurality of spacers 31 and 32 are arranged between the intermediate member 12 and the interior member 13. A space 40 is formed between the intermediate member 12 and the interior member 13 by the plurality of spacers 31 and 32. The bag layers 16 and 17 are disposed in the space 40. In FIG. 2, the direction in which the structure 11 (frame 5), the intermediate material 12, and the interior material 13 are arranged in order is the X direction. The X direction is also a direction in which the structure 11 and the intermediate material 12 face each other, and is also a direction in which the intermediate material 12 and the interior material 13 face each other. Note that the positions of the spacers 31 and 32 and the positions of the pair of flanges 21a and 21b shown in FIG. 2 are examples. The positions of the spacer and the pair of flanges are not limited to the positions shown in FIG.

  The structure 11 is a structure of a double skin structure having a first face plate 21 and a second face plate 22 and a plurality of ribs 23 and 24 arranged between the first face plate 21 and the second face plate 22. The first face plate 21 and the second face plate 22 are arranged at a predetermined interval in the X direction. The first face plate 21 and the second face plate 22 are parallel. One end of the plurality of ribs 23 and 24 is connected to the first face plate 21, and the other end of the plurality of ribs 23 and 24 is connected to the second face plate 22. The first face plate 21 is disposed at a position close to the inside of the vehicle, and the second face plate 22 is disposed at a position close to the outside of the vehicle. A pair of flanges 21 a and a pair of flanges 21 b are formed on the first face plate 21 at a predetermined interval. The pair of flanges 21a and the pair of flanges 21b protrude into the vehicle. Also on the second face plate 22, a pair of flanges 22a and a pair of flanges 22b are formed at a predetermined interval. The pair of flanges 22a and the pair of flanges 22b protrude outward from the vehicle.

  The pair of flanges 21a, the elastic member 14, and the spacer 31 are arranged so as to overlap in the X direction. The pair of flanges 21b, the elastic member 15, and the spacer 32 are arranged so as to overlap in the X direction.

  The elastic members 14 and 15 are formed of a material that is elastically deformed. The elastic members 14 and 15 can suppress vibration. The elastic members 14 and 15 are made of resin, for example. The elastic members 14 and 15 may be rubber, for example.

  The intermediate member 12 is a single plate-like member. The intermediate material 12 extends along the structure 11. The intermediate material 12 is, for example, a metal plate.

  The interior material 13 is, for example, a metal plate. The interior material 13 used for the structure structure including the structure 11 (underframe 5) constitutes, for example, a part of the floor visually recognized from the guest room.

  In the space 40 formed between the intermediate member 12 and the interior member 13, two bag layers 16 and 17 are laminated in the X direction. The bag body layer 16 is disposed at a position close to the intermediate material 12, and the bag body layer 17 is disposed at a position close to the interior material 13. The planar bottom surface of the bag layer 16 is in contact with the intermediate material 12. The hemispherical upper surface of the bag layer 17 is in contact with the interior material 13. Here, the case where the bag layer 16 and the bag layer 17 have the same configuration is shown. Below, the structure of the bag body layer 16 is demonstrated.

  3A and 3B show enlarged views of the bag layer 16. As shown in FIGS. 3A and 3B, the bag body layer 16 has a plurality of bag bodies 51. The plurality of bag bodies 51 are arranged along the intermediate member 12 shown in FIG. Since the intermediate material 12 extends along the structure 11, it can be said that the plurality of bag bodies 51 are arranged along the structure 11. Adjacent bag bodies 51 are separated. Adjacent bag bodies 51 are connected by a connection film 52. Thereby, the some bag body 51 located in a line along the structure 11 is united. 2, 3 (a) and 3 (b) show a case where a plurality of bag bodies 51 having the same configuration are arranged in the extending direction of the structure 11.

  The bag body 51 includes a sealed bag-like film 61 and a gas 62 sealed inside the film 61. For example, one kind of gas is sealed in the film 61. The inside of the film 61 is not in a vacuum state. Further, there is no solid matter such as a porous material inside the membrane 61. The film 61 is filled with a gas 62. 3A and 3B show a state where the film 61 is pulled. When the film 61 is pulled, the bag body 51 is hemispherical. The film | membrane 61 has the plane part 61a and the hemispherical part 61b. In the plurality of bag bodies 51, adjacent flat portions 61 a are connected to each other by a connection film 52. The flat surface portion 61a is disposed at a position close to the outside of the vehicle, and the hemispherical portion 61b is disposed at a position close to the inside of the vehicle.

  The film 61 is formed so that slight vibrations in the thickness direction of the film 61 occur at a plurality of continuous locations in the film 61. Each location where micro vibrations occur is a minute region. It is preferable that the slight vibrations occur in the membrane 61 at a number of consecutive locations. The slight vibration in the thickness direction of the film 61 is a vibration having a small amplitude in the thickness direction of the film 61. In the film 61, the fine vibrations that occur at a plurality of consecutive locations may be the same vibration or different vibrations. The vibration is the same, for example, a vibration having the same amplitude and wavelength. The difference in vibration means, for example, vibration in which at least one of amplitude and wavelength is different. A large vibration such that the entire film 61 forms one wave is not a slight vibration in the thickness direction of the film 61. In addition, a large vibration in which the entire flat portion 61 a of the film 61 forms one wave is not a slight vibration in the thickness direction of the film 61. In addition, a large vibration in which the entire hemispherical portion 61 b of the film 61 forms one wave is not a slight vibration in the thickness direction of the film 61. The micro region where micro vibration occurs is a very small region with respect to the entire film 61, the entire flat surface portion 61a of the film 61, and the entire hemispherical portion 61b of the film 61.

  The film 61 has flexibility. The film | membrane 61 is formed with the metal foil or polyethylene, for example. The film 61 is made of, for example, an aluminum foil. The film | membrane 61 may contain what has gas barrier properties, such as a cellulose nanofiber, for example.

  Similar to the film 61, the connection film 52 that connects the bag bodies 51 may be formed so that slight vibrations in the thickness direction of the connection film 52 occur at a plurality of continuous locations. The connection film 52 may be a flexible film. The material of the connection film 52 may be, for example, the material exemplified in the description of the film 61 described above. The material of the connection film 52 may be the same as the material of the film 61 or may be different from the material of the film 61.

The gas 62 enclosed in the membrane 61 may be air. For example, when 80% of air is nitrogen and 20% of air is oxygen, the molecular weight of air can be obtained from the following equation.
Molecular weight of air (average molecular weight of air) = molecular weight of nitrogen molecule (28) × 0.8 + molecular weight of oxygen molecule (36) × 0.2 = 28.8
Here, the molecular weight of the nitrogen molecule is 28, and the molecular weight of the oxygen molecule is 36.
The molecular weight determined from the above formula is the average molecular weight of air (28.8). The above is an example of a method for calculating the molecular weight of air, and the method for calculating the molecular weight of air is not limited to the above.

The gas 62 may be a gas whose main component is an atom having an atomic weight smaller than that of air or a molecule having a molecular weight smaller than that of air. A gas mainly composed of an atom having an atomic weight smaller than that of air or a molecule having a molecular weight smaller than that of air is 99% of atoms having an atomic weight smaller than that of air or molecules having a molecular weight smaller than that of air. The gas contained above. Hereinafter, “main component” has the same meaning as described above.
The atomic weight of helium and the atomic weight of neon are smaller than the molecular weight of air. The gas 62 may be a gas mainly composed of helium or neon, for example.

  The gas 62 may be a gas whose main component is an atom having an atomic weight larger than that of air or a molecule having a molecular weight larger than that of air. The atomic weight of argon gas, the atomic weight of xenon and the atomic weight of krypton are larger than the molecular weight of air. The gas 62 may be, for example, a gas mainly composed of argon gas, xenon, or krypton. The gas 62 may be a gas whose main component is an atom having a thermal conductivity smaller than that of air or a molecule having a thermal conductivity smaller than that of air. The thermal conductivity of air at 0 ° C. is 0.0241 W / mK. The thermal conductivity of argon at 0 ° C. is 0.0164 W / mK, which is lower than the thermal conductivity of air at 0 ° C. The gas 62 may be argon, for example.

(Structure structure including side structure)
FIG. 4 shows a partially enlarged view of the structure 100 including the side structure 4 shown in FIGS. 1 (a) and 1 (b). In FIG. 4, the side structure 4 shown in FIG. 1A and FIG. The structure 100 including the side structure 4 includes a structure 111 and an interior material 113. The interior material 113 is disposed at a position closer to the inside of the vehicle than the structure body 111. A bag layer 116 is disposed between the structure 111 and the interior material 113. In FIG. 4, the direction in which the structure 111 (side structure 4) and the interior material 113 are arranged in order is the X direction. The X direction is a direction in which the structure body 111 and the interior material 113 face each other. In FIG. 4, hatching indicating a cross section is omitted.

  The structure 111 is a structure having a double skin structure having a first face plate 121 and a second face plate 122 and a plurality of ribs 123 and 124 disposed between the first face plate 121 and the second face plate 122. The first face plate 121 and the second face plate 122 are arranged at a predetermined interval in the X direction. The first face plate 121 and the second face plate 122 are parallel. One end of the plurality of ribs 123 and 124 is connected to the first face plate 121, and the other end of the plurality of ribs 123 and 124 is connected to the second face plate 122. The first face plate 121 is disposed at a position close to the inside of the vehicle, and the second face plate 122 is disposed at a position close to the outside of the vehicle. The first face plate 121 is formed with a pair of flanges 121a and a pair of flanges 121b at a predetermined interval. The pair of flanges 121a and the pair of flanges 121b protrude into the vehicle.

  The interior material 113 is disposed so as to contact the pair of flanges 121a and the pair of flanges 121b. A space 140 is formed between the structure 111 and the interior material 113 by the pair of flanges 121a and the pair of flanges 121b. One bag layer 116 is disposed in the space 140. The interior material 113 is, for example, a metal plate. The interior material 113 used for the structural body structure 100 including the side structural body 4 constitutes, for example, a part of the side wall visually recognized from the passenger room.

  FIG. 5A shows an enlarged view of the bag layer 116. FIG. 5B shows a part of the space 140. In the space 140, a plurality of bag layers 116 are arranged along the structure 111.

  As shown in FIG. 5A, the bag body layer 116 has a plurality of bag bodies 151. A plurality of bag bodies 151 included in one bag layer 116 are arranged in one direction along the structure 111. In a plurality of bag bodies 151 arranged in one direction, adjacent bag bodies 151 are separated. A connection film 152 exists between the adjacent bags 151. The end portions of the adjacent bag bodies 151 are connected to each other by the connection film 152. Thereby, the several bag 151 arranged in one direction is united. FIG. 4, FIG. 5A and FIG. 5B show a case where a plurality of bag bodies 151 having the same configuration are arranged in one direction.

  The bag body 151 includes a sealed bag-shaped film 161 and a gas 162 sealed inside the film 161. The bag body 151 has an elongated shape. For example, one kind of gas is sealed in the film 161. The inside of the film 161 is not in a vacuum state. Further, there is no solid material such as a porous material inside the membrane 161. The gas 162 is filled inside the film 161. 5A and 5B show a state where the film 161 is pulled. In a state where the membrane 161 is pulled, as shown in FIG. 5A, the bag body 151 has an elongated elliptical shape in the side view of the bag body 151. When the membrane 161 is pulled, as shown in FIG. 5B, the bag body 151 has an elongated rectangular shape in plan view.

  The film 161 of the bag body 151 is formed so that slight vibration in the thickness direction of the film 161 occurs at a plurality of continuous locations in the film 161. Each location where micro vibrations occur is a minute region. Microvibration preferably occurs at a number of consecutive locations in the film 161. The minute vibration and the minute region have the same meaning as the minute vibration and the minute region in the description of the structure-structured film 61 including the frame 5. The film 161 has flexibility. The film 161 is formed of, for example, the material exemplified in the description of the structure-structure film 61 including the underframe 5.

  Similar to the film 161, the connection film 152 may be formed so that slight vibration in the thickness direction of the connection film 52 occurs at a plurality of continuous locations. The connection film 152 may be a flexible film. The material of the connection film 152 is, for example, the material exemplified in the description of the structure film 161 including the frame 5. The material of the connection film 152 may be the same as the material of the film 161. The material of the connection film 52 may be different from the material of the film 161.

  The gas 162 enclosed in the membrane 161 may be air. Further, the gas 162 may be, for example, the gas exemplified in the description of the gas 62 in the structure structure including the underframe 5.

  In the above description, the structure structure including the structure 111 (side structure 4) has been described. However, in the railway vehicle according to the present embodiment, the structure structure including the side structure 3 illustrated in FIG. 1 also includes the structure 111 (side structure 4) described above. It has the same structure as the structure structure it contains.

As described above, according to the present embodiment, the following effects are obtained.
The pressure fluctuates in the space 40 between the intermediate member 12 and the interior member 13 due to the sound entering the railway vehicle 1 from outside the vehicle. Due to this pressure fluctuation, the film 61 of the bag body 51 disposed in the space 40 is displaced. Thereby, in the film | membrane 61, the micro vibration of the thickness direction of the film | membrane 61 occurs in the continuous several location. Due to this vibration, friction occurs between the surface of the film 61 and the gas 62 sealed in the film 61 at a plurality of consecutive locations in the film 61. In addition, friction occurs between the surface of the film 61 and the gas outside the film 61 at a plurality of continuous locations in the film 61. Thereby, the energy of sound is converted into thermal energy. Therefore, it is possible to shield the sound that has entered from outside the vehicle. Therefore, it has sound insulation performance.
Further, since the gas 62 is sealed inside the film 61 of the bag body 51, the movement range of the gas 62 is limited to the inside of the film 61. Therefore, the movement of heat by the gas 62 is limited. Therefore, heat transfer is suppressed. Thereby, heat insulation performance is provided.
Furthermore, the gas enclosed in the film | membrane 61 of the bag body 51 is much lighter than the conventional heat insulating material. Therefore, the weight of the structure including the bag body 51 is lighter than the weight of the conventional structure. Further, the bag body 51 itself is very lightweight. Therefore, there is no need to reduce the weight of the bag body 51. Therefore, the density and thickness of the bag body 51 need not be lowered. Therefore, the sound insulation performance and heat insulation performance are not reduced by reducing the density and thickness of the bag body 51.
Therefore, the structure including the structure 11 has both heat insulation performance and sound insulation performance while reducing the weight as compared with the conventional structure.

  The film 61 of the bag body 51 has flexibility. The gas 62 is filled inside the flexible film 61. As a result, in the film 61, micro vibrations in the thickness direction of the film 61 occur in a large number of continuous minute regions. Therefore, friction between the surface of the film 61 and the gas 62 inside the film 61 tends to occur. Further, friction between the surface of the film 61 and the gas outside the film 61 is likely to occur. Thereby, the energy of the sound that has entered from outside the vehicle is easily converted into thermal energy. Therefore, the sound insulation performance is improved.

  In the space 40 between the intermediate material 12 and the interior material 13, a plurality of bag bodies 51 are arranged along the intermediate material 12. Since the intermediate material 12 extends along the structure 11, it can be said that the plurality of bag bodies 51 are arranged along the structure 11. Thereby, the heat insulation effect and the sound insulation effect are obtained over the whole structure 11.

  In the structure structure 10 including the frame 5 (structure 11), two bag layers 16 and 17 are laminated in the X direction in the space 40 between the structure 11 and the intermediate member 12. Although one bag body layer 16 or one bag body layer 17 is arranged in the space 40, a heat insulation effect and a sound insulation effect can be obtained, but the two bag body layers 16 and 17 are laminated in the space 40. Thereby, the heat insulation performance and the sound insulation performance are further improved over the entire structure 11.

  When the gas 62 in the film 61 is mainly composed of an atom having an atomic weight smaller than the molecular weight of air or a molecule having a molecular weight smaller than the molecular weight of air, the gas 62 is light and thus easily moves. For example, the atomic weight of helium and the atomic weight of neon are smaller than the molecular weight of air. Therefore, when the gas 62 in the film 61 contains at least one of helium and neon as a main component, the gas 62 is light and therefore easily moved. Therefore, when the pressure in the bag body 51 fluctuates due to sound entering from the outside of the vehicle, atoms or molecules easily move in the film 61. Thereby, the energy of the sound which invaded from the outside of the vehicle is easily converted into heat energy. Therefore, the sound insulation performance is improved.

  As the molecular weight or atomic weight of a gas increases, the thermal conductivity of the gas tends to decrease. By enclosing in the film 61 atoms having an atomic weight greater than the molecular weight of air or molecules having a molecular weight larger than the molecular weight of air, heat transfer by the gas in the film 61 is further suppressed. For example, the atomic weight of argon and the atomic weight of krypton are smaller than the molecular weight of air. By enclosing a gas mainly containing argon or krypton in the film 61, heat transfer by the gas 62 in the film 61 is further suppressed. This improves the heat insulation performance.

  When the gas 62 in the film 61 is an atom or molecule having a thermal conductivity lower than that of air (0.0241 W / mK) at 0 ° C., heat conduction by the gas 62 is performed inside the film 61. Is suppressed. For example, the thermal conductivity of argon at 0 ° C. is lower than the thermal conductivity of air at 0 ° C. Therefore, the heat insulation performance is improved by enclosing a gas mainly composed of argon in the film 61.

  The above is an effect obtained by the structure structure 10 including the structure 11 (frame 5), but the same effect can be obtained by the structure structure 100 including the structure 111 (side structure 4).

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. The second embodiment differs from the first embodiment in that (1) the configuration of the intermediate member 212 is different and (2) the structure does not have the elastic members 14 and 15 in the first embodiment. . In addition, about the structure same as 1st Embodiment mentioned above, the same code | symbol is used and the description is abbreviate | omitted suitably. In FIG. 6, hatching indicating a cross section is omitted.

  FIG. 6 shows a partially enlarged view of the structure 200 including the underframe. In FIG. 6, the frame is shown as the structure 11. The structure structure including the frame includes a structure (frame) 11, an intermediate material 212, and an interior material 13. The intermediate member 212 is disposed so as to be in contact with the pair of flanges 21 a and the pair of flanges 21 b included in the first face plate 21 in the structure 11. The intermediate material 212 extends along the structure 11. In FIG. 6, the direction in which the structure 11 (the frame 5), the intermediate material 12, and the interior material 13 are arranged in order is the X direction. The X direction is also a direction in which the structure 11 and the intermediate material 212 face each other, and is also a direction in which the intermediate material 212 and the interior material 13 face each other.

  A plurality of spacers 31 and 32 are arranged at a predetermined interval between the intermediate material 212 and the interior material 13. The spacer 31 and the pair of flanges 21a are arranged so as to overlap in the X direction. The spacer 32 and the pair of flanges 21b are arranged so as to overlap in the X direction. A space 240 is formed between the intermediate material 212 and the interior material 13 by the plurality of spacers 31 and 32. In the space 240, the bag layers 16 and 17 are laminated in the X direction. The positions of the spacers 31 and 32 and the positions of the pair of flanges 21a and 21b shown in FIG. 6 are examples. The positions of the spacer and the pair of flanges are not limited to the positions shown in FIG.

  FIG. 7 shows a partially enlarged view of the intermediate material 212. As shown in FIG. 7, the intermediate member 212 includes a first plate 221, a second plate 222, and an elastically deformable first layer 223 disposed between the first plate 221 and the second plate 222. . The intermediate material 212 is a laminated body in which a first plate 221, a first layer 223, and a second plate 222 are laminated. The first plate 221 is disposed at a position close to the inside of the vehicle, and the second plate 222 is disposed at a position close to the outside of the vehicle. The first plate 221 and the second plate 222 are metal plates. The first plate 221 and the second plate 222 may have the same configuration or different configurations. For example, the thickness of the first plate 221 and the thickness of the second plate 222 may be different. Further, the material of the first plate 221 and the material of the second plate 222 may be different. The elastically deformable first layer 223 is, for example, a layer made of resin or a layer containing resin. The material of the first layer 223 may be, for example, a thermoplastic resin or a thermosetting resin. Examples of the thermoplastic resin include one or more selected from a styrene resin, an acrylic resin, a vinyl resin, an ethylene resin, and a propylene resin. Examples of the thermosetting resin include one or more selected from an elastomer, an epoxy resin, a phenol resin, and an unsaturated ester resin.

As described above, the structure structure of the second embodiment has sound insulation performance and heat insulation performance, similarly to the structure structure of the first embodiment.
For the following reasons, the structure of the second embodiment also has vibration damping performance.
The intermediate member 212 has a configuration in which an elastically deformable first layer 223 is disposed between two metal first plates 221 and second plates 222. When the vibration of the structure 11 is transmitted to the intermediate material 212, the shear energy is generated in the first layer 223, thereby converting the vibration energy into heat energy. Therefore, the vibration is attenuated.
In the existing structure, a rubber material is used as a vibration damping material. When a rubber material is used, a plurality of rubber materials are arranged in the structure at a predetermined interval. However, since the area of the structure is very large, a very large number of rubber materials must be arranged. In addition, when placing rubber materials, it is necessary to work very hardly, such as adjusting the spacing between adjacent rubber materials for all rubber materials, and adjusting the height of the rubber materials to the same height. It is. Such work takes time and effort. On the other hand, since the intermediate material 212 having the above-described configuration is a plate-like member extending along the structure, it is not necessary to arrange a large number of intermediate materials 212. Further, since the intermediate material 212 and the intermediate material 212 are not separated from each other, it is not necessary to adjust the distance between the intermediate material 212 and the intermediate material 212 or to adjust the height of all the intermediate materials 212. Therefore, by using the intermediate material 212 having the above-described configuration, it is possible to arrange the intermediate material 212 in the structure more easily and in a shorter time than when a conventional rubber material is used. As a result, the assembly work of the structure can be simplified. Further, the time required for the assembly work can be shortened.
Further, the vibration is attenuated by the intermediate material 212, whereby the vibration propagating to the interior material 13 is attenuated, and the vibration radiation sound radiated from the interior material 13 is reduced.
Conventionally, in order to improve the sound insulation performance, an iron plate is disposed between the structure 11 and the interior material 13, but the weight of the iron plate is large. By using the intermediate material 212 having the above-described configuration instead of the iron plate, it is possible to improve the vibration damping performance and the sound insulation performance while reducing the weight of the structure.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS. The third embodiment differs from the first embodiment in that (1) the configuration of the intermediate material 312 is different, and (2) the structure does not have the elastic members 14 and 15 in the first embodiment, (3) The configuration of the interior material 313 is different. In addition, about the structure same as 1st Embodiment mentioned above, the same code | symbol is used and the description is abbreviate | omitted suitably. In FIG. 8, hatching indicating a cross section is omitted.

  FIG. 8 shows a partially enlarged view of the structure 300 including the underframe. In FIG. 8, the frame is shown as the structure 11. The structure structure including the underframe includes a structure (underframe) 11, an intermediate material 312, and an interior material 313. The intermediate material 312 is disposed so as to be in contact with the pair of flanges 21 a and the pair of flanges 21 b included in the first face plate 21 in the structure 11. The intermediate material 312 and the interior material 313 extend along the structure 11. In FIG. 8, the direction in which the structure (underframe) 11, the intermediate material 312, and the interior material 313 are arranged in order is the X direction. The X direction is also a direction in which the structure 11 and the intermediate material 312 face each other, and is also a direction in which the intermediate material 312 and the interior material 313 face each other.

  A plurality of spacers 31 and 32 are arranged at a predetermined interval between the intermediate material 312 and the interior material 313. A pair of flanges 21a with the spacer 31 is arranged so as to overlap in the X direction. The spacer 32 and the pair of flanges 21b are arranged so as to overlap in the X direction. A plurality of spacers 31 and 32 form a space 340 between the intermediate material 312 and the interior material 313. In the space 340, the bag layers 16 and 17 are laminated in the X direction. The positions of the spacers 31 and 32 and the positions of the pair of flanges 21a and 21b shown in FIG. 8 are examples. The positions of the spacer and the pair of flanges are not limited to the positions shown in FIG.

  FIG. 9A shows a partially enlarged view of the intermediate material 312. FIG. 9B shows a partially enlarged view of the interior material 313. As shown in FIG. 9A, the intermediate material 312 includes a first plate 321, a second plate 322, and an elastically deformable first layer 323 disposed between the first plate 321 and the second plate 322. And have. The intermediate material 312 is a laminated body in which a first plate 321, a first layer 323, and a second plate 322 are laminated. The first plate 321 is disposed at a position close to the inside of the vehicle, and the second plate 322 is disposed at a position close to the outside of the vehicle. The first plate 321 and the second plate 322 are metal plates. The first plate 321 and the second plate 322 may have the same configuration or different configurations. For example, the thickness of the first plate 321 and the thickness of the second plate 322 may be different. Further, the material of the first plate 321 and the material of the second plate 322 may be different. The elastically deformable first layer 323 is, for example, a resin layer or a resin-containing layer. The material of the first layer 323 may be, for example, a thermoplastic resin or a thermosetting resin. Examples of the thermoplastic resin include one or more selected from a styrene resin, an acrylic resin, a vinyl resin, an ethylene resin, and a propylene resin. Examples of the thermosetting resin include one or more selected from an elastomer, an epoxy resin, a phenol resin, and an unsaturated ester resin.

  The interior material 313 includes a stacked body 330 and a fifth plate 341 as illustrated in FIG. The stacked body 330 is a stacked body in which a third plate 331, a fourth plate 332, and an elastically deformable second layer 333 disposed between the third plate 331 and the fourth plate 332 are stacked. The third plate 331 is disposed at a position close to the inside of the vehicle, and the fourth plate 332 is disposed at a position close to the outside of the vehicle. The fifth plate 341 is overlaid on the third plate 331 of the stacked body 330. The fifth plate 341 is disposed at a position closer to the inside of the vehicle than the stacked body 330.

  The third plate 331 and the fourth plate 332 are metal plates. The third plate 331 and the fourth plate 332 may have the same configuration or different configurations. For example, the thickness of the third plate 331 and the thickness of the fourth plate 332 may be different. Further, the material of the third plate 331 and the material of the fourth plate 332 may be different. The elastically deformable second layer 333 is, for example, a layer made of resin or a layer containing resin. The material of the second layer 333 is, for example, the material exemplified for the first layer 323. The laminated body 330 may have the same configuration as the intermediate material 312 or may have a different configuration from the intermediate material 312.

  The fifth plate 341 is a metal plate. The thickness D of the fifth plate 341 is thicker than the thickness d of the stacked body 330. By stacking the fifth plate 341 on the stacked body 330, the strength of the interior material 313 can be improved.

As described above, the structure structure of the third embodiment has sound insulation performance and heat insulation performance, as with the structure structure of the first embodiment.
For the following reasons, the structure of the third embodiment has vibration damping performance.
The intermediate material 312 has a configuration in which an elastically deformable first layer 323 is disposed between two metal first and second plates 321 and 322. When the vibration of the structure 11 is transmitted to the intermediate material 312, the shear energy is generated in the first layer 323, so that the vibration energy is converted into thermal energy. Therefore, the vibration is attenuated.
In the existing structure, a rubber material is used as a vibration damping material. When a rubber material is used, a plurality of rubber materials are arranged in the structure at a predetermined interval. However, since the area of the structure is very large, a very large number of rubber materials must be arranged. In addition, when placing rubber materials, it is necessary to work very hardly, such as adjusting the spacing between adjacent rubber materials for all rubber materials, and adjusting the height of the rubber materials to the same height. It is. Such work takes time and effort. On the other hand, since the intermediate material 212 having the above-described configuration is a plate-like member extending along the structure, it is not necessary to arrange a large number of intermediate materials 312. Further, since the intermediate material 312 and the intermediate material 312 are not separated from each other, it is not necessary to adjust the distance between the intermediate material 312 and the intermediate material 312 or to adjust the height of all the intermediate materials 312. Therefore, by using the intermediate material 312 having the above-described configuration, the intermediate material 312 can be arranged in the structure more easily and in a shorter time than when a conventional rubber material is used. Thereby, the assembly work of the structure structure can be simplified and the time required for the assembly work can be shortened.
Further, the vibration is attenuated by the intermediate material 312, whereby the vibration propagating to the interior material 13 is attenuated, and the vibration radiation sound radiated from the interior material 13 is reduced.
Conventionally, in order to improve the sound insulation performance, an iron plate is disposed between the structure 11 and the interior material 13, but the weight of the iron plate is large. By using the intermediate member 312 having the above-described configuration instead of the iron plate, it is possible to improve the vibration damping performance and the sound insulation performance while reducing the weight of the structure.

In the interior material 313, a second layer 333 that can be elastically deformed is disposed between two metal third plates 331 and fourth plates 332. When vibration is transmitted to the interior material 313, the shearing strain is generated in the elastically deformable second layer 333, so that the vibration energy is converted into thermal energy, so that the vibration is attenuated.
Further, the vibration radiated sound radiated from the interior material 313 is reduced by the vibration being attenuated by the interior material 313.
Moreover, since the interior material 313 includes the metal fifth plate 341 in addition to the stacked body 330, the strength of the interior material 313 is improved. Thereby, for example, when the structure of the third embodiment is adopted for the structure of the underframe, it can withstand even if a load is locally applied to the interior material 313 serving as a floor.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.

For example, in the first to third embodiments described above, the two bag layers 16 and the bag layers 17 stacked in the space between the intermediate material and the interior material have the same configuration. However, the plurality of bag layers disposed between the intermediate material and the interior material may have different configurations. For example, the plurality of bag layers have at least one first bag layer having a specific shape and at least one second bag layer having a shape different from the shape of the first bag layer. Also good. The plurality of bag layers may include at least one first bag layer in which the first gas is sealed and at least one second bag body in which a second gas different from the first gas is sealed. Good.
For example, the plurality of bag layers are filled with at least one first bag layer in which a first gas mainly containing at least one of helium and neon is sealed, and a second gas mainly containing argon. You may have at least 1 2nd bag. In this case, the sound insulation can be further improved by the first gas sealed in the first bag layer. Moreover, heat insulation can be improved more by the 2nd gas enclosed with the 2nd bag body layer. Thereby, both sound insulation performance and heat insulation performance can be improved more.
In the above description, the case where the plurality of bag layers have two different types of bag layers is illustrated, but the plurality of bag layers may have three or more different types of bag layers.

Moreover, in the above-mentioned 1st-3rd embodiment, all the several bag bodies 51 which one bag body layer 16 has are the same structures. Moreover, all the several bag bodies 51 which one bag body layer 17 has are the same structures. Furthermore, in the above-described first embodiment, the plurality of bag bodies 151 included in the bag layer 116 have the same configuration. However, the plurality of bags included in one bag layer may include differently configured bags. For example, one bag body layer may include at least one first bag body in which a first gas is sealed and at least one second bag body in which a second gas different from the first gas is sealed. In this case, the first gas may be a gas mainly containing at least one of helium and neon, and the second gas may be a gas mainly containing argon. Thereby, while heat insulation performance and sound insulation performance are obtained by one bag body layer, heat insulation performance can be improved more in the field where at least one 1st bag body is arranged, and at least 1 2nd bag body The sound insulation performance can be further improved in the region where is arranged. The first bag body and the second bag body may be alternately arranged along the structure. Thereby, the heat insulation performance and the sound insulation performance can be improved in the entire structure.
In the above, the case where one bag body layer has two different types of bag bodies is illustrated, but one bag body layer may have three or more different types of bag bodies.

  Moreover, in the bag body layer 16 of the above-described first to third embodiments, the adjacent bag bodies 51 are separated. Further, in the bag body layer 116 of the first embodiment described above, the adjacent bag bodies 151 are separated. However, the plurality of bags arranged along the structure may be in contact with the adjacent bags. A plurality of bag bodies may be connected or not connected with adjacent bag bodies in contact with each other. Moreover, the several bag body located in a line with a structure does not need to be connected in the state away from the adjacent bag body. In this case, the plurality of bags may have the same configuration or different configurations.

  In the above-described first to third embodiments, the film 61 of the bag body 51 has flexibility. In the first embodiment described above, the film 161 of the bag body 151 has flexibility. However, the membrane of the bag body need not have flexibility.

  In the first to third embodiments described above, the gas 62 is filled in the film 61 of the bag body 51, and the film 61 is pulled. In the first embodiment described above, the gas 162 is filled inside the film 161 of the bag body 151, and the film 161 is pulled. However, the membrane of the bag does not have to be pulled.

  In the first to third embodiments described above, the bag body 51 is hemispherical in a state where gas is sealed inside the film 61 of the bag body 51 and the film 61 is pulled. In the first embodiment described above, in the state where gas is sealed inside the membrane 161 of the bag body 151 and the membrane 161 is pulled, the bag body 151 in the side view of the bag body 151 has an elongated elliptical shape. However, the shape of the bag is not limited to these shapes.

  FIG. 10A and FIG. 10B show an example of a shape different from the shape of the bag body of the above-described embodiment. As shown in FIG. 10A and FIG. 10, the bag layer includes a plurality of bag bodies 451 and a connection film 452 in which end portions of adjacent bag bodies 451 are connected to each other. FIG. 10A and FIG. 10B show a state in which the gas 462 is filled in the film 461 of the bag body 451 and the film 461 is pulled. In this state, in the side view of the bag body 451 (see FIG. 10A), the bag body 451 has an elliptical shape in which the ratio of the long side to the short side (aspect ratio) is close to 1. Further, in a plan view of the bag body 451 (see FIG. 10B), the bag body 451 has a rectangular shape in which the ratio of the long side to the short side (aspect ratio) is close to 1.

  In the first to third embodiments described above, the two bag layers 16 and 17 are disposed between the intermediate members 12, 212, 312 and the interior members 13, 313 in the opposing direction (X Direction). However, the number of bag layers disposed between the intermediate material and the interior material is not limited to the above. In the first embodiment, one bag layer 16 is disposed between the structure 111 and the interior material 113. However, the number of bag layers disposed between the structure and the interior material is not limited to the above. Only one bag layer may be disposed between the intermediate material and the interior material or between the structure and the interior material. Two or more bag layers may be laminated between the intermediate material and the interior material in the facing direction of the intermediate material and the interior material. Further, two or more bag layers may be laminated between the structure and the interior material in the facing direction of the structure and the interior material.

In the first to third embodiments described above, the bag body layer 16 is in contact with the intermediate members 12 and 312, and the bag body layer 17 is in contact with the interior members 13 and 313. When the bag layer 16 is in contact with the intermediate members 12, 312, part of the vibration of the intermediate members 12, 312 is directly transmitted to the bag layer 16. Further, part of the heat of the intermediate members 12 and 312 is directly transmitted to the bag layer 16.
In the first embodiment, the bag layer 116 is in contact with the structure 111 and the interior material 113. When the bag body layer 116 is in contact with the structure body 111, part of the vibration of the structure body 111 is directly transmitted to the bag body layer 116. Further, part of the heat of the structure 111 is directly transmitted to the bag layer 116.
However, the bag layer may be separated from the structure, the intermediate material, and the interior material. Further, the bag body may be separated from the structure body, the intermediate material, and the interior material. For example, when the structure does not include an intermediate material and a bag layer is disposed between the structure and the interior material, the bag layer may be separated from the structure and the interior material. In this configuration, vibration and heat of the structure are transmitted to the bag layer through the air existing in the space between the structure and the interior material. Further, when the structure structure includes an intermediate material, and the bag body layer is disposed between the intermediate material and the interior material, the bag body layer may be separated from the intermediate material and the interior material. In this configuration, the vibration and heat of the intermediate material are transmitted to the bag body layer through the air existing in the space between the intermediate material and the interior material.

  The bag body 51 of the above-described first to third embodiments is arranged so that the flat portion 61a of the film 61 is close to the outside of the vehicle and the hemispherical portion 61b is close to the inside of the vehicle. However, the arrangement of the bag body 51 is not limited to this arrangement. For example, the bag may be arranged so that the flat portion of the membrane is close to the inside of the vehicle and the hemispherical portion is close to the outside of the vehicle.

  In the structure structure of the second embodiment described above, the intermediate material 212 is a laminated body in which a first plate 221, a second plate 222, and a first layer 223 are laminated. However, the intermediate material is not limited to this configuration. For example, the intermediate material may include a laminate and a metal plate stacked on the laminate. FIG. 11 shows an example of this.

  A structure structure 500 shown in FIG. 11 is a modification of the structure structure of the second embodiment. The same components as those in the second embodiment described above are denoted by the same reference numerals, and the description thereof is omitted as appropriate. In FIG. 11, a part of hatching indicating a cross section is omitted. The structure structure shown in FIG. 11 includes a structure body 511, an intermediate material 512, and an interior material 13. A sheet 514 is disposed between the structure body 511 and the intermediate member 512. A plurality of spacers 31 and 32 are disposed between the intermediate member 512 and the interior member 13. A space 540 is formed between the intermediate member 512 and the interior member 13 by the plurality of spacers 31 and 32. Three bag layers 16 are stacked in the X direction in the space 540. The X direction is a direction in which the structure 11, the intermediate member 512, and the interior member 13 are arranged in order.

  The structure 511 has a double skin structure having a first face plate 21 and a second face plate 522 and a plurality of ribs 23 and 24 disposed between the first face plate 21 and the second face plate 522. Except that the flange is not formed on the second face plate 522, the second face plate 522 has the same configuration as the second face plate 522 of the structure 11 of the second embodiment.

  The sheet 514 is disposed along the first face plate 21. Around the pair of flanges 21a and the pair of flanges 21b, the seat 514 rises along the pair of flanges 21a and the pair of flanges 21b.

  The intermediate material 512 is disposed so as to overlap the sheet 514. The intermediate material 512 extends along the structure 11. As shown in the enlarged view of FIG. 11, the intermediate member 512 includes a laminated body 520 in which a first plate 221, a second plate 222, and an elastically deformable first layer 223 are laminated, and a sixth plate 521. . The laminated body 520 has the same configuration as that of the intermediate material 212 of the second embodiment. The sixth plate 521 is disposed so as to overlap the first plate 221. The sixth plate 521 is, for example, a metal plate. The sixth plate 521 is disposed at a position closer to the inside of the vehicle than the stacked body 520.

  An auxiliary intermediate material 550 is disposed between the pair of flanges 21 a and the spacer 31. An auxiliary intermediate member 560 is disposed between the pair of flanges 21 a and the spacer 32. As shown in the enlarged view of FIG. 7, the auxiliary intermediate member 550 includes a seventh plate 551, an eighth plate 552, and an elastically deformable third layer disposed between the seventh plate 551 and the eighth plate 552. 553. The seventh plate 551 and the eighth plate 552 are, for example, metal plates. The seventh plate 551 and the eighth plate 552 may have the same configuration or different configurations. For example, the thickness of the seventh plate 551 and the thickness of the eighth plate 552 may be different. The material of the seventh plate 551 and the material of the eighth plate 552 may be different. The elastically deformable third layer 553 is, for example, a layer made of resin or a layer containing resin. The material of the third layer 553 may be, for example, a thermoplastic resin or a thermosetting resin. Examples of the thermoplastic resin include one or more selected from a styrene resin, an acrylic resin, a vinyl resin, an ethylene resin, and a propylene resin. Examples of the thermosetting resin include one or more selected from an elastomer, an epoxy resin, a phenol resin, and an unsaturated ester resin. The auxiliary intermediate material 560 has the same configuration as the auxiliary intermediate material 550 described above.

  The pair of flanges 121a, the auxiliary intermediate member 550, and the spacer 31 are disposed so as to overlap in the X direction. The pair of flanges 121b, the auxiliary intermediate member 560, and the spacer 32 are disposed so as to overlap in the X direction.

  According to the configuration shown in FIG. 11, the sound insulation performance and the heat insulation performance are provided as in the structure structure of the second embodiment. Moreover, since the laminated body 520 which the intermediate material 512 has is the same structure as the intermediate material 212 of 2nd Embodiment, the effect similar to the effect obtained by the intermediate material 212 of 2nd Embodiment is acquired. Further, in addition to the laminated body 520, an auxiliary intermediate material 550 having the same configuration as that of the laminated body 520 is disposed between the pair of flanges 21 a and the spacer 31. Further, an auxiliary intermediate material 560 having the same configuration as that of the stacked body 520 is disposed between the pair of flanges 21 b and the spacer 32. The auxiliary intermediate members 550 and 560 can further suppress vibration. Thereby, the damping performance can be further improved.

  In the interior material 313 of the third embodiment described above, the thickness D of the fifth plate 341 is thicker than the thickness d of the stacked body 330. However, the thickness D of the fifth plate 341 may be equal to or less than the thickness d of the stacked body 330.

  In the third embodiment described above, the intermediate member 312 is a laminated body in which the first plate 321, the second plate 322, and the first layer 323 are laminated. However, the intermediate material is not limited to this configuration. The intermediate material may be, for example, a single plate member. The intermediate material may be, for example, a single metal plate.

  In the first embodiment described above, the side structure 3 and the side structure 4 have the same configuration. However, the side structure 3 and the side structure 4 may have different configurations.

  In the structure structure of the first to third embodiments described above, the structure 11 has a double skin structure including a first face plate 21, a second face plate 22, and a plurality of ribs 23 and 24. However, the structure may have a structure other than the double skin structure. For example, the structure may be formed from a single plate-like member.

In the first embodiment described above, the structure structure including the frame 5 and the structure structure including the side structure 4 have been described. In the second and third embodiments, the structure structure including the underframe has been described. However, these structure structures may be used for any of a structure structure including a roof structure, a structure structure including a side structure, and a structure structure including a frame. For example, the structure structure 10 shown in FIG. 2 may be used for a structure structure having a side structure. Further, the structure structure 200 illustrated in FIG. 6 may be used for a structure structure having a side structure. Further, the structure structure 300 illustrated in FIG. 8 may be used for a structure structure having a side structure. Further, the structure structure 500 illustrated in FIG. 11 may be used for a structure structure having a side structure. Moreover, you may employ | adopt these structure structures for the ceiling structure containing a ceiling board. In this case, the interior material included in the structure structure constitutes a part of the ceiling visually recognized from inside the vehicle.
Further, the intermediate member 212 shown in FIGS. 6 and 7 may be used for a structure having a side structure, for example. Further, at least one of the intermediate material 312 and the interior material 313 shown in FIGS. 8 and 9 may be used for a structure having a side structure. Furthermore, at least one of the intermediate member 512 and the auxiliary intermediate member 550 shown in FIG. 11 may be used in a structure structure having a side structure.

DESCRIPTION OF SYMBOLS 1 Rail vehicle 2 Roof structure 3, 4 Side structure 5 Underframe 6 Wife structure 7 Ceiling board 8 Internal space 10, 100, 200, 300, 500 Structure structure 11, 111, 511 Structure 12, 212, 312, 512 Intermediate material 13 Interior material 14, 15 Elastic material 16, 17, 116 Bag body layer 40, 140, 240, 340, 540 Space 51, 151, 451 Bag body 52, 152, 452 Connection film 61, 161, 461 Film 61a Flat surface 61b Hemisphere Shape part 62, 162, 462 Gas 221, 321 1st plate 222, 322 2nd plate 223, 323 1st layer 331 3rd plate 332 4th plate 333 2nd layer 341 5th plate 550, 560 Auxiliary intermediate material

Claims (13)

Structure and
An interior material disposed closer to the interior space of the railway vehicle than the structure;
It is arranged between the structure and the interior material, and comprises a bag body in which gas is sealed inside a bag-like film,
When the bag body vibrates in response to pressure fluctuation caused by sound entering the structure from the outside of a railway vehicle, the film is subject to slight vibration in the thickness direction of the film at a plurality of consecutive locations. The structure of the railway vehicle. The membrane is flexible;
The structure of a railway vehicle according to claim 1, wherein the gas is filled in the film.   The structure of a railway vehicle according to claim 1 or 2, wherein the gas is mainly composed of an atom having an atomic weight smaller than that of air or a molecule having a molecular weight smaller than that of air.   The structure of a railway vehicle according to claim 1 or 2, wherein the gas is mainly composed of an atom having an atomic weight larger than that of air or a molecule having a molecular weight larger than that of air.   The gas is mainly composed of an atom having a thermal conductivity smaller than that of air at 0 ° C or a molecule having a thermal conductivity smaller than that of air. The structure of the railway vehicle described in 1.   The structure of a railway vehicle according to claim 1 or 2, wherein the gas contains at least one of helium and neon as a main component.   The structure of a railway vehicle according to claim 1 or 2, wherein the gas contains argon as a main component. A plurality of the bags are arranged between the structure and the interior material,
The plurality of bag bodies include at least one first bag body in which a first gas is sealed, and at least one second bag body in which a second gas different from the first gas is sealed. The structure of a railway vehicle according to any one of claims 1 to 7.   The structure of the railway vehicle according to any one of claims 1 to 8, wherein the plurality of bags are arranged along the structure. A bag body layer formed by connecting a plurality of the bag bodies arranged along the structure,
The plurality of bag layers are laminated between the structure and the interior material in a direction in which the structure and the interior material are opposed to each other. The structure of a railway vehicle. An intermediate material disposed between the structure and the interior material;
The bag is disposed between the interior material and the intermediate material,
The intermediate material is
Extending along the structure,
2. A first metal plate, a second metal plate, and an elastically deformable first layer disposed between the first plate and the second plate. The structure of a railway vehicle according to any one of 10 to 10. The interior material is
A third metal plate, a fourth metal plate disposed closer to the space in the railway vehicle than the third plate, and an elasticity disposed between the third plate and the fourth plate. A laminate in which a deformable second layer is laminated;
A metal fifth plate thicker than the thickness of the laminate,
The railway vehicle according to any one of claims 1 to 11, wherein the fifth plate is overlapped with the fourth plate and disposed at a position closer to a space in the railway vehicle than the stacked body. Structure structure.   The railway vehicle according to any one of claims 1 to 12, wherein at least one of a structure structure including a side structure, a structure structure including a frame, and a structure structure including a roof structure is the structure structure according to any one of claims 1 to 12.

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