JP2010018137A - Railroad vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a railroad vehicle with a floor plate, which can be improved in vibration proofing performance and sound insulation performance with its mechanical strength improved. <P>SOLUTION: When an external bending force is applied to the floor plate 100, a connecting member 130 is elastically deformed in a shearing direction to be opposed against the deformation of the floor plate 100. Thus, by using elasticity of the connecting member 130, the rigidity of the floor plate 100 can be enhanced, and the mechanical strength of the floor plate 100 can be improved. On the other hand, also when an external tensile or compressive force in a vertical direction is applied to the floor plate 100, the connecting member 130 can be displaced by using the clearance S formed between a top plate section 111 and the connecting member 130 and that formed between a bottom plate section 121 and the connecting member 130, and the connecting member 130 can be elastically deformed in the shearing direction. This can facilitate reflection of vibrations or sound energy input to the floor plate 100, and improve the vibration proofing performance and sound insulation performance of the floor plate 100. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a railway vehicle, and more particularly to a railway vehicle provided with a floor board that can improve vibration-proof performance and sound insulation performance while improving mechanical strength.

Conventionally, as a floor plate constituting a floor surface of a passenger room, a rail vehicle using a panel formed by filling a core material such as a resin material between a pair of facing members arranged so as to face each other, a so-called sandwich panel is known. It has been. With respect to such a sandwich panel, for example, Patent Document 1 discloses that a foamed resin raw material is injected between a pair of face materials arranged opposite to each other and foamed to form a foamed resin heat insulating layer as a core material between the pair of face materials. An insulating sandwich panel is disclosed.
Japanese Patent No. 4065585

  By the way, in the sandwich panel configured by filling a core material between a pair of facing members arranged opposite to each other as in the heat insulation sandwich panel disclosed in Patent Document 1 described above, the bending rigidity of the panel is ensured. Therefore, if the rigidity of the core material is increased, the core material is hardly elastically deformed. As a result, there is a problem that vibration and sound energy input to the panel cannot be reflected, and the vibration isolation performance and sound insulation performance are impaired.

  On the other hand, if the rigidity of the core material is lowered and the core material is easily elastically deformed, the bending rigidity of the panel is lowered and the mechanical strength is impaired. That is, there was a contradictory relationship between improvement in mechanical strength and improvement in vibration insulation performance and sound insulation performance.

  The present invention has been made to solve the above-described problems, and provides a railway vehicle including a floor board that can improve vibration-proof performance and sound-insulation performance while improving mechanical strength. It is aimed.

  In order to achieve this object, the railway vehicle according to claim 1 includes a floor plate constituting a floor surface of a passenger cabin, and the floor plate includes a top plate portion formed in a plate shape and the top plate portion. A plurality of top-plate-side projections that protrude from the top-plate, and a plurality of top-plate-side projections that extend in parallel on the one surface side of the top-plate portion at a predetermined interval; and a plate And a plurality of bottom plate side projections protruding from the bottom plate portion, and the plurality of bottom plate side projections extend in parallel to one surface side of the bottom plate portion with a predetermined interval. A lower floor plate provided, a connecting member configured to connect the lower floor plate and the upper floor plate and made of a viscoelastic material, the top plate side protrusion and the bottom plate side protrusion facing each other and the plurality The bottom plate-side projections are interposed between adjacent top-plate-side projections of the top-plate-side projections The upper floor plate and the lower floor plate are arranged to face each other such that the top plate side protrusion is interposed between adjacent bottom plate side protrusions of the plurality of bottom plate side protrusions, and the top plate side protrusion And a pair of wall surfaces facing each other between the top portion and the bottom plate side protrusion are connected by the connecting member, and a gap is formed between the top plate portion and the connecting member and between the bottom plate portion and the connecting member. Yes.

  According to a second aspect of the present invention, there is provided the railway vehicle according to the first aspect, further comprising a support portion protruding from at least one of the pair of wall surfaces, and the connecting member is supported by the support portion. Yes.

  According to a third aspect of the present invention, there is provided the railway vehicle according to the first or second aspect, wherein the railcar includes an engagement recess formed in the pair of wall surfaces, and the connection member is engaged with the engagement recess. Yes.

  The railcar according to claim 4 is the railcar according to any one of claims 1 to 3, wherein the railcar is a surface of the upper floor plate and the lower floor plate, between the top plate portion and the connecting member, and the bottom plate portion. In a region facing a gap formed between the connecting member and the connecting member, a heat insulating material having heat insulating performance is covered.

  The railway vehicle according to claim 5 is the railway vehicle according to any one of claims 1 to 4, wherein the railway vehicle is formed between the top plate portion and the connecting member and between the bottom plate portion and the connecting member. The gap is filled with a porous sound-absorbing material having lower rigidity and sound-absorbing performance than the connecting member.

  According to the railway vehicle of claim 1, the floor plate includes a bottom plate between the top plate side projections adjacent to each other, and the top plate side projections and the bottom plate side projections face each other. The upper floor plate and the lower floor plate are arranged to face each other so that the top plate side projection portion is interposed between the adjacent bottom plate side projection portions of the plurality of bottom plate side projection portions while the side projection portion is interposed, A pair of side surfaces facing each other of the top plate side protrusion and the bottom plate side protrusion are connected by a connecting member. Further, in a state where the upper floor plate and the lower floor plate are connected by the connecting member, a gap is formed between the top plate portion and the connecting member and between the bottom plate portion and the connecting member.

  Therefore, when a bending external force is applied to the floor board, that is, when the floor board is deformed so that the upper floor board and the lower floor board are curved, the connecting member is elastically deformed in the shear direction to counter the deformation of the floor board. . Therefore, in addition to the rigidity of the upper floor board and the lower floor board, the rigidity of the floor board can be increased by utilizing the elasticity of the connecting member, and the mechanical strength of the floor board can be improved.

  Further, the top floor plate has the top plate-side projection portion serving as a rib, whereby the rigidity in the extending direction of the top plate-side projection portion is enhanced. Similarly, in the lower floor board, the bottom plate-side protrusions serve as ribs, so that the rigidity in the extending direction of the bottom plate-side protrusions is increased. Therefore, the mechanical strength of the floor board can be further improved.

  On the other hand, when a vertical tensile or compressive external force is applied to the floor plate, that is, when the floor plate is deformed so that the upper floor plate and the lower floor plate are separated from each other or close to each other, the top plate portion and the connecting member Since the gap is formed between the gap and the bottom plate portion and the connecting member, the connecting member can be displaced using the gap, and the connecting member can be elastically deformed in the shearing direction.

  Here, for example, when the connecting member is filled between the upper floor plate and the lower floor plate without a gap, the connecting member is pulled or compressed when an external force in the vertical direction is applied to the floor plate. It will elastically deform in the direction. For this reason, compared with the case where it deforms elastically in the shearing direction, the deformation resistance increases, and the connecting member becomes difficult to elastically deform.

  On the other hand, according to the present invention, the connecting member can be elastically deformed in the shearing direction even when an external force in the vertical direction is applied to the floor board. Can be easily deformed. As a result, the vibration and sound energy input to the floor board can be easily reflected, and the vibration isolation performance and sound insulation performance of the floor board can be improved.

  As described above, when the rigidity of the connecting member is increased to ensure the bending rigidity of the floorboard, the connecting member is hardly elastically deformed. As a result, the vibration and sound energy input to the floor board cannot be reflected, and the anti-vibration performance and sound insulation performance are impaired. On the other hand, if the rigidity of the connecting member is lowered and the connecting member is easily elastically deformed, the bending rigidity of the floor board is lowered and the mechanical strength is impaired. That is, there was a contradictory relationship between improvement in mechanical strength and improvement in vibration insulation performance and sound insulation performance.

  On the other hand, according to the present invention, it is possible to improve the vibration-proof performance and the sound insulation performance while improving the mechanical strength, and to achieve both the improvement of the mechanical strength and the improvement of the vibration-proof performance and the sound insulation performance. Can do.

  Further, according to the present invention, since the connecting member is made of a viscoelastic material, when an external force is applied to the floor board, the energy of vibration input to the floor board is absorbed using the viscosity of the connecting member. Vibration can be damped. Thereby, there exists an effect that the damping performance of a floor board can be improved.

  Furthermore, according to the present invention, the connection portion between the upper floor plate and the lower floor plate connected by the connecting member is limited to the top plate side protrusion and the bottom plate side protrusion, so that the heat between the upper floor plate and the lower floor plate can be reduced. There is an effect that the heat insulation performance of the floor board can be improved by suppressing conduction.

  According to the railway vehicle according to claim 2, in addition to the effect achieved by the railway vehicle according to claim 1, at least one wall surface of the pair of wall surfaces facing each other of the top plate side projection and the bottom plate side projection is provided. Since the projecting support portion is provided and the connection member is supported by the support portion, the connection member can be held between the pair of wall surfaces. Therefore, even if a gap is formed between the top plate portion and the connecting member and between the bottom plate portion and the connecting member, it is possible to prevent the connecting member from falling into the gap.

  According to the railway vehicle of the third aspect, in addition to the effect produced by the railway vehicle according to the first or second aspect, the pair of wall surfaces of the top plate side projection and the bottom plate side projection are opposed to each other. Since the engaging member is engaged with the engaging recess, for example, the connecting member is connected between the pair of wall surfaces without bonding the connecting member to the top plate side protrusion and the bottom plate side protrusion. Can be held. Therefore, there is an effect that the floor board can be easily manufactured.

  In addition, for example, when bonding the connecting member to the top plate side projection and the bottom plate side projection, not only the operation of positioning the relative positions of the upper floor plate and the lower floor plate is required, but the upper floor plate and the lower floor plate are also required. However, according to the present invention, the relative position between the upper floor plate and the lower floor plate can be positioned by engaging the connecting member with the engaging recess. Therefore, there is an effect that workability is improved and the floorboard can be efficiently manufactured.

  According to the railway vehicle according to claim 4, in addition to the effect produced by the railway vehicle according to any one of claims 1 to 3, the surface of the upper floor plate and the lower floor plate between the top plate portion and the connecting member and In the region facing the gap formed between the bottom plate portion and the connecting member, a heat insulating material having heat insulating performance is covered, so that the upper floor plate and the lower floor plate due to the convection of air existing in the gap There is an effect that the heat insulation performance of the floor board can be improved by suppressing the heat conduction between the two.

  According to the railway vehicle according to claim 5, in addition to the effect produced by the railway vehicle according to any one of claims 1 to 4, it is formed between the top plate portion and the connecting member and between the bottom plate portion and the connecting member. The gap is filled with a porous sound-absorbing material that is lower in rigidity than the connecting member and has sound-absorbing performance, so that sound transmission through the air is suppressed and the sound-insulating performance of the floorboard is improved. There is an effect that can be.

  Further, since the connecting member can be supported by the sound absorbing material filled between the top plate portion and the connecting member and between the bottom plate portion and the connecting member, the connecting member can be held between the pair of wall surfaces. There is an effect. Therefore, even if a gap is formed between the top plate portion and the connecting member and between the bottom plate portion and the connecting member, it is possible to prevent the connecting member from falling into the gap.

  Furthermore, since the sound absorbing material is porous, it suppresses the movement of air existing between the top plate portion and the connecting member and between the bottom plate portion and the connecting member, thereby preventing air convection. Can do. Therefore, there is an effect that heat conduction between the upper floor plate and the lower floor plate due to air convection can be suppressed and the heat insulating performance of the floor plate can be improved.

  Thus, according to the present invention, the sound absorbing material is configured to have lower rigidity than the connecting member while improving the sound insulation performance and heat insulation performance of the floor board, so that the rigidity of the entire floor board does not increase. There is an effect that the anti-vibration performance can be maintained.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. FIG. 1A is a side view of a railway vehicle 1 according to an embodiment of the present invention, and FIG. 1B is a perspective sectional view of a vehicle structure 10. In addition, in FIG.1 (b), the state in which some floor boards 100 were notched is shown in figure.

  First, a schematic configuration of the railway vehicle 1 will be described with reference to FIG. As shown in FIG. 1, a vehicle 2 that forms a railway vehicle 1 includes a vehicle body 10 that includes a vehicle body, and a cabin (not shown) is formed inside the vehicle structure 10.

  As shown in FIG. 1B, the vehicle structure 10 includes a frame 11 that serves as a base of the vehicle body, a pair of side structures 12 that form the side surfaces of the vehicle body, and a pair of wife structures 13 that form the wife surface of the vehicle body. And a roof structure 14 that constitutes the roof surface of the vehicle body. In FIG. 1 (b), the illustration of one of the pair of wife structures 13 (the wife structure on the front side of FIG. 1 (b)) is omitted.

  Further, a floor plate 100 constituting a floor surface of the passenger cabin is disposed on the upper surface of the underframe 11, and the deformation of the vehicle body is resisted by the rigidity of the floor plate 100, and vibrations and noises are generated inside the passenger cabin by the elasticity of the floor plate 100. It is configured to be able to suppress transmission.

  Next, a detailed configuration of the floor board 100 will be described with reference to FIG. 2 is a cross-sectional view of the floor board 100 as viewed in the direction of arrow II in FIG. In FIG. 2, in order to facilitate understanding of the drawing, a plurality of identical configurations are denoted by reference numerals only for some of the plurality of configurations, and the drawing is simplified.

  As shown in FIG. 2, the floor board 100 connects the upper floor board 110 which comprises the floor board of a guest room, the lower floor board 120 arrange | positioned facing the upper floor board 110, and these upper floor boards 110 and the lower floor board 120. The connecting member 130 is provided.

  The upper floor plate 110 is made of an extruded shape obtained by extruding a metal material such as an aluminum alloy, and has a top plate portion 111 formed in a flat plate shape, and a plurality of top plate side projections protruding from the top plate portion 111. Unit 112.

  The plurality of top-plate-side projections 112 are arranged in parallel on the one surface side of the top-plate portion 111 with a predetermined interval, and the top-plate-side projections 112 are arranged in parallel so that adjacent top-plate-side projections 112 do not intersect. It extends continuously in a direction perpendicular to the installation direction (front and back direction in FIG. 2). In other words, each of the plurality of top plate side protrusions 112 is extended in parallel with a predetermined interval.

  Similarly to the upper floor plate 110, the lower floor plate 120 is made of an extruded shape obtained by extruding a metal material such as an aluminum alloy, and has a bottom plate portion 121 formed in a flat plate shape, and a plurality of protrusions provided on the bottom plate portion 121. The bottom plate-side protruding portion 122 is configured.

  The plurality of bottom plate side projections 122 are arranged in parallel on the one surface side of the bottom plate portion 121 with a predetermined interval, and are orthogonal to the direction in which the bottom plate side projections 122 are arranged so that adjacent bottom plate side projections 122 do not intersect. It is continuously extended in the direction (the front and back direction in FIG. 2). That is, the plurality of bottom plate side protrusions 122 are extended in parallel with a predetermined interval therebetween.

  In addition, since the upper floor board 110 and the lower floor board 120 are both made of extruded shape members, the top plate portion 111 and the top plate side projection portion 112, the bottom plate portion 121 and the bottom plate side projection portion 122, respectively. It can be formed integrally. Therefore, the floor board 100 can be easily manufactured and the floor board 100 can be manufactured at low cost. However, the upper floor board 110 or the lower floor board 120 may comprise the top plate portion 111 and the top plate side projection portion 112, and the bottom plate portion 121 and the bottom plate side projection portion 122 as separate members.

  As shown in FIG. 2, the upper floor plate 110 and the lower floor plate 120 are configured such that the top plate side projection 112 and the bottom plate side projection 122 face each other, and the bottom plate side projection 122 is between the adjacent top plate projections 112. Are arranged so as to face each other so that the top plate side projection 112 is inserted between the adjacent bottom plate side projections 122.

  In addition, in the state where the parallel arrangement interval of the top plate side projection 112 and the parallel arrangement interval of the bottom plate side projection 122 are set to substantially the same interval, and the upper floor plate 110 and the lower floor plate 120 are arranged to face each other, The bottom plate side projection 122 is positioned at the approximate center of the adjacent top plate projections 112 and the top plate projection 112 is positioned at the approximate center of the adjacent bottom plate projections 122.

  The connecting member 130 is made of a viscoelastic material having both viscosity and elasticity, such as silicon rubber, and the top plate-side protrusion 112 and the bottom plate-side protrusion adjacent to the upper floor plate 110 and the lower floor plate 120 that are arranged to face each other. Vulcanized and bonded to the portion 122. By this connecting member 130, a pair of opposing wall surfaces 112 a and 122 a of the adjacent top plate side protrusion 112 and bottom plate side protrusion 122 are connected, and the upper floor plate 110 and the lower floor plate 120 are connected. That is, the upper floor plate 110 and the lower floor plate 120 are connected by the connecting member 130 only at the pair of wall surfaces 112a and 122a, and between the top plate portion 111 and the connecting member 130 and between the bottom plate portion 121 and the connecting member 130. A gap S is formed.

  Here, the height h of the gap S (the distance between the top plate portion 111 and the connecting member 130 and the space between the bottom plate portion 121 and the connecting member 130) is such that the connecting member 130 is in the shearing direction (vertical direction in FIG. 2). The size is set to be smaller than the limit amount of elastic deformation, that is, the amount of deformation that becomes a plastic region when further deformed. Accordingly, it is possible to avoid a situation where the gap S becomes unnecessarily large and the thickness of the floor board 100 (dimension in the vertical direction in FIG. 2) becomes too thick, thereby ensuring a large cabin space. Further, since the gap S does not become larger than necessary, the heat conduction between the upper floor board 110 and the lower floor board 120 due to the convection of the air existing in the gap S is suppressed, and the heat insulation performance of the floor board 100 is improved. Can be improved.

  The regions of the upper floor plate 110 and the lower floor plate 120 configured as described above and facing the gap S, that is, the back surfaces of the top plate portion 111 and the bottom plate portion 121, the top plate side protruding portion 112, and the bottom plate side protruding portion. A sheet-like heat insulating material X having heat insulating performance such as glass wool is covered with the front end of 122. With this heat insulating material X, the heat conduction between the upper floor board 110 and the lower floor board 120 due to the convection of air existing in the gap S can be suppressed, and the heat insulating performance of the floor board 100 can be improved.

  Next, the operation of the connecting member 130 when an external force is applied to the floor board 100 will be described with reference to FIG. However, in the present embodiment, a case where an external force of bending is applied to the floor board 100 and a case where an external force of tension or compression in the vertical direction (the vertical direction in FIG. 2) is applied will be described. In addition, because of the structure of the vehicle structure 10, the floor plate 100 hardly deforms in the horizontal direction (the left-right direction in FIG. 2 or the front-back direction in FIG. 2). The description of the case where it is given is omitted.

  First, when a bending external force is applied to the floor board 100, that is, when the floor board 100 is deformed such that the upper floor board 110 and the lower floor board 120 are curved, the connecting member 130 is elastically deformed in the shearing direction, and the floor board 100 is deformed. Counter 100 deformations. Therefore, in addition to the rigidity of the upper floor board 110 and the lower floor board 120, the rigidity of the floor board 100 can be increased using the elasticity of the connecting member 130, and the mechanical strength of the floor board 100 can be improved.

  In addition, the top floor plate 110 is enhanced in rigidity in the extending direction of the top plate side projection 112 (the front and back direction in FIG. 2) by the top plate side projection 112 serving as a rib. Similarly, the lower floor board 120 is enhanced in rigidity in the extending direction of the bottom plate side protrusion 122 (front and back direction in FIG. 2) by the bottom plate side protrusion 122 serving as a rib. Therefore, the mechanical strength of the floor board 100 can be further improved.

  On the other hand, when an external force in the vertical direction (vertical direction in FIG. 2) is applied to the floor board 100, that is, when the floor board 100 is deformed so that the upper floor board 110 and the lower floor board 120 are separated from each other or close to each other. In addition, since the gap S is formed between the top plate portion 111 and the connecting member 130 and between the bottom plate portion 121 and the connecting member 130, the connecting member 130 can be displaced using the gap S, and the connection The member 130 can be elastically deformed in the shear direction.

  Here, for example, in the case where the connecting member 130 is filled between the upper floor plate 110 and the lower floor plate 120 without a gap, when the external force in the vertical direction is applied to the floor plate 100, the connecting member 130 is elastically deformed in the pulling or compressing direction. For this reason, the deformation resistance increases compared to the case of elastic deformation in the shear direction, and the connecting member 130 is difficult to elastically deform.

  On the other hand, since the connecting member 130 can be elastically deformed in the shearing direction even when an external force in the vertical direction is applied to the floor plate 100, the connecting member 130 is deformed by reducing the deformation resistance. Easy to do. Thereby, the vibration and sound energy input to the floor board 100 can be easily reflected, and the vibration isolation performance and sound insulation performance of the floor board 100 can be improved.

  In the present embodiment, the bottom plate side projection 122 is positioned approximately at the center of the adjacent top plate projections 112, and the top plate projection 112 is positioned approximately at the center of the adjacent bottom plate projections 122. Therefore, the distance between the adjacent top plate side projections 112 and bottom plate side projections 122 is constant, and a plurality of connecting members 130 can be made into a common component. Therefore, each connection member 130 can be made to act equally, and mechanical strength can be improved equally in the whole floor board 100, and vibration isolating performance and sound insulation performance can be improved equally.

  As described above, when the rigidity of the connecting member 130 is increased to ensure the bending rigidity of the floor board 100, the connecting member 130 is hardly elastically deformed. As a result, the vibration and sound energy input to the floor board 100 cannot be reflected, and the vibration isolation performance and sound insulation performance are impaired. On the other hand, if the rigidity of the connecting member 130 is lowered and the connecting member 130 is easily elastically deformed, the bending rigidity of the floor board 100 is lowered and the mechanical strength is impaired. That is, there was a contradictory relationship between improvement in mechanical strength and improvement in vibration insulation performance and sound insulation performance.

  On the other hand, according to the present embodiment, it is possible to improve the vibration proof performance and the sound insulation performance while improving the mechanical strength, and to improve both the mechanical strength and the vibration proof performance and the sound insulation performance. Can be made.

  Further, according to the present embodiment, since the connecting member 130 is made of a viscoelastic material, when an external force is applied to the floor board 100, the connection member 130 is input to the floor board 100 using the viscosity of the connecting member 130. Can absorb the energy of vibration and attenuate the vibration. Thereby, the damping performance of the floor board 100 can be improved.

  Furthermore, according to the present embodiment, the connecting portion between the upper floor plate 110 and the lower floor plate 120 connected by the connecting member 130 is limited to the top plate side protrusion 112 and the bottom plate side protrusion 122, so the upper floor plate 110 Heat conduction between the floor board 120 and the lower floor board 120 can be suppressed, and the heat insulation performance of the floor board 100 can be improved.

  In this embodiment, as shown in FIGS. 1 and 2, the floor board 100 has a top plate-side protrusion 112 and a bottom plate-side protrusion 122 in the width direction of the vehicle structure 10 (a pair of side structures 12 are opposed to each other). It is configured to extend in the direction of As a result, compared with the case where the top plate side protrusion 112 and the bottom plate side protrusion 122 are extended in the longitudinal direction of the vehicle structure 10 (the direction in which the pair of wife structures 13 face each other), the passengers can move on the floor plate 100. The load at the time of movement can be supported by more connecting members 130. Therefore, the vibration generated when the passenger moves on the floor board 100 can be attenuated efficiently.

  Next, a second embodiment will be described with reference to FIG. FIG. 3 is a cross-sectional view of the floor board 200 in the second embodiment. In FIG. 3, in order to facilitate understanding of the drawing, reference numerals are given only to the main components, and a plurality of identical components are assigned symbols to only a part of the plurality of components. The drawing is simplified. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 3, the floor board 200 in the second embodiment has a gap S (see FIG. 2) between the floor boards 100 in the first embodiment, that is, between the top plate portion 111 and the connecting member 130 and the bottom plate portion. Between the 121 and the connecting member 130, a sound absorbing material Y having lower rigidity and sound absorbing performance than the connecting member 130 such as urethane foam is filled.

  The sound-absorbing material Y is a porous foam that is foamed by mixing a foaming agent or the like with the main raw material. After the upper floor board 110 and the lower floor board 120 are connected by the connecting member 130 in the manufacturing process of the floor board 200, It is formed by foaming in the gap S. Thereby, compared with the case where the sound-absorbing material Y previously formed in a shape corresponding to the gap S is inserted into the gap S, the sound-absorbing material Y can be filled into the gap S easily and reliably.

  According to the present embodiment, since the sound absorbing material Y is filled between the top plate portion 111 and the connecting member 130 and between the bottom plate portion 121 and the connecting member 130, the propagation of sound via air is suppressed. Thus, the sound insulation performance of the floor board 200 can be improved.

  Further, since the connecting member 130 can be supported by the sound absorbing material Y filled between the top plate portion 111 and the connecting member 130 and between the bottom plate portion 121 and the connecting member 130, the top plate side protrusion 112 and Even when the bonding force of the connecting member 130 vulcanized and bonded to the bottom plate-side protruding portion 122 is reduced, the connecting member 130 can be held between the pair of wall surfaces 112a and 122a.

  Furthermore, since the sound absorbing material Y has porosity, the movement of air existing between the top plate portion 111 and the connecting member 130 and between the bottom plate portion 121 and the connecting member 130 is suppressed, Convection can be prevented. Therefore, the heat conduction between the upper floor board 210 and the lower floor board 120 resulting from the convection of air can be suppressed, and the heat insulation performance of the floor board 200 can be improved.

  Thus, according to the present embodiment, the sound absorbing material Y is configured to have lower rigidity than the connecting member 130 while improving the sound insulation performance and heat insulation performance of the floor plate 200. The rigidity is not increased and the vibration isolation performance can be maintained.

  Next, a third embodiment will be described with reference to FIG. FIG. 4 is a cross-sectional view of the floor board 300 according to the third embodiment. In FIG. 4, in order to facilitate understanding of the drawing, a plurality of identical configurations are denoted by reference numerals only for some of the plurality of configurations, and the drawing is simplified. In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 4, the floor board 300 in 3rd Embodiment is the upper floor board 310 which comprises the floor board of a passenger room, the lower floor board 120 arrange | positioned facing the upper floor board 310, these upper floor boards 310, and lower parts. A connecting member 130 that connects the floor plate 120 is provided.

  The upper floor plate 310 is made of an extruded shape obtained by extruding a metal material such as an aluminum alloy, and has a top plate portion 111 formed in a flat plate shape and a plurality of top plate side protrusions protruding from the top plate portion 111. Part 312.

  The plurality of top plate side projections 312 are arranged in parallel on the one surface side of the top plate unit 111 at a predetermined interval, and the top plate side projections 312 are arranged side by side so that adjacent top plate side projections 312 do not intersect. It extends continuously in a direction orthogonal to the installation direction (front and back direction in FIG. 4). In other words, each of the plurality of top plate side protrusions 312 extends in parallel at a predetermined interval.

  Further, on the wall surface 312a of the top plate side projection portion 312, a support portion 312b formed in a protruding shape from the wall surface 312a toward both sides (left and right direction in FIG. 4) at the tip of the top plate side projection portion 312 is projected. Has been.

  As shown in FIG. 4, the upper floor plate 310 and the lower floor plate 120 are configured such that the top plate side protruding portion 312 and the bottom plate side protruding portion 122 face each other and the bottom plate side protruding portion 122 is between the adjacent top plate side protruding portions 312. Are arranged opposite to each other so that the top plate side projection 312 is inserted between the adjacent bottom plate side projections 122.

  The interval between the top plate-side protrusions 212 is set to be substantially the same as the interval between the bottom plate-side protrusions 122, and in the state where the upper floor plate 310 and the lower floor plate 120 are arranged to face each other, The bottom plate side protruding portion 122 is positioned at the approximate center of the matching top plate side protruding portion 312 and the top plate side protruding portion 312 is positioned at the approximate center of the adjacent bottom plate side protruding portion 122.

  The connecting member 130 is vulcanized and bonded between the top plate side protrusion 312 and the bottom plate side protrusion 122 of the upper floor plate 310 and the lower floor plate 120 that are arranged to face each other. By this connecting member 130, a pair of wall surfaces 312 a and 122 a facing each other between the adjacent top plate side protrusions 312 and bottom plate side protrusions 122 are connected, and the upper floor plate 310 and the lower floor plate 120 are connected. That is, the upper floor plate 310 and the lower floor plate 120 are connected by the connecting member 130 only at the pair of wall surfaces 312a and 122a, and between the top plate portion 111 and the connecting member 130 and between the bottom plate portion 121 and the connecting member 130. A gap S is formed.

  Further, in a state where the upper floor plate 310 and the lower floor plate 120 are connected by the connecting member 130, the lower surface of the connecting member 130 is locked to the support portion 312b, and the connecting member 130 is supported by the support portion 312b.

  In addition, it is the surface of the upper floor board 310 and the lower floor board 120, and the area | region which faces the clearance gap S, ie, the back surface of the top-plate part 111 and the bottom-plate part 121, and the front-end | tip of the top-plate side protrusion part 312 and the bottom-plate side protrusion part 122. Is covered with a heat insulating material X.

  As described above, according to the present embodiment, since the connecting member 130 is supported by the support portion 312b, the connecting member 130 vulcanized and bonded to the top plate side protruding portion 312 and the bottom plate side protruding portion 122 is provided. Even when the adhesive force is reduced, the connecting member 130 can be held between the pair of wall surfaces 312a and 122a. Therefore, even if the gap S is formed between the top plate portion 111 and the connecting member 130 and between the bottom plate portion 121 and the connecting member 130, the connecting member 130 is prevented from dropping into the gap S. be able to.

  Next, a fourth embodiment will be described with reference to FIG. FIG. 5 is a cross-sectional view of the floor board 400 in the fourth embodiment. In FIG. 5, in order to facilitate understanding of the drawing, a plurality of the same configurations are denoted by reference numerals only for some of the plurality of configurations, and the drawing is simplified. In the fourth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 5, the floor board 400 in 4th Embodiment is the upper floor board 410 which comprises the floor board of a passenger room, the lower floor board 420 arrange | positioned facing the upper floor board 410, these upper floor boards 410, and lower parts A connecting member 130 that connects the floor plate 420 is provided.

  The upper floor plate 410 is made of an extruded shape obtained by extruding a metal material such as an aluminum alloy, and has a top plate portion 111 formed in a flat plate shape, and a plurality of top plate side protrusions protruding from the top plate portion 111. Part 412.

  The plurality of top plate side projections 412 are arranged in parallel on the one surface side of the top plate unit 111 with a predetermined interval, and the top plate side projections 412 are arranged side by side so that adjacent top plate side projections 412 do not intersect. It extends continuously in a direction orthogonal to the installation direction (front and back direction in FIG. 5). That is, each of the plurality of top plate side protrusions 412 extends in parallel with a predetermined interval.

  Further, the wall surface 412a of the top plate side projection 412 is continuously extended in the extending direction of the top plate side projection 412 (the front and back direction in FIG. 5), and is formed in a concave groove shape on both wall surfaces 412a. An engaging recess 412b is provided.

  The lower floor plate 420 is made of an extruded shape obtained by extruding a metal material such as an aluminum alloy, and has a bottom plate portion 121 formed in a flat plate shape, and a plurality of bottom plate side protrusions 422 protruding from the bottom plate portion 121. It is configured with.

  The plurality of bottom plate side protrusions 422 are arranged in parallel on the one surface side of the bottom plate portion 121 at a predetermined interval, and are orthogonal to the parallel arrangement direction of the bottom plate side protrusions 422 so that adjacent bottom plate side protrusions 422 do not intersect. It is continuously extended in the direction (front and back direction in FIG. 5). That is, the plurality of bottom plate side protrusions 422 are extended in parallel with a predetermined interval therebetween.

  In addition, the wall surface 422a of the bottom plate side protrusion 422 is continuously extended in the extending direction of the bottom plate side protrusion 422 (the front and back direction in FIG. 5), and is formed in a concave groove shape on both wall surfaces 422a. An engaging recess 422b is provided.

  As shown in FIG. 5, the upper floor plate 410 and the lower floor plate 420 are such that the top plate side protrusion 412 and the bottom plate side protrusion 422 face each other and the bottom plate side protrusion 422 is between the adjacent top plate side protrusions 412. Are arranged so as to face each other so that the top plate side protrusion 412 is inserted between the adjacent bottom plate side protrusions 422.

  In addition, in the state where the parallel arrangement interval of the top plate side protrusion 412 and the parallel arrangement interval of the bottom plate side protrusion 422 are set to substantially the same interval, and the upper floor plate 410 and the lower floor plate 420 are arranged to face each other, The bottom plate side protrusion 422 is positioned at the approximate center of the adjacent top plate side protrusions 412 and the top plate side protrusion 412 is positioned at the approximate center of the adjacent bottom plate side protrusions 422.

  The connecting member 130 is disposed between the top plate-side protrusion 412 and the bottom plate-side protrusion 422 adjacent to each other between the upper floor plate 410 and the lower floor plate 420 that are disposed to face each other. Specifically, the side surface of the connecting member 130 is engaged with the engaging recess 412b of the top plate side protrusion 412 and the engaging recess 422b of the bottom plate side protrusion 422, and the connecting member 130 is engaged with the engaging recesses 412b and 422b. It is supported. By this connecting member 130, a pair of wall surfaces 412 a and 422 a facing each other between the adjacent top plate side protrusion 412 and bottom plate side protrusion 422 are connected, and the upper floor plate 410 and the lower floor plate 420 are connected. That is, the upper floor plate 410 and the lower floor plate 420 are connected by the connecting member 130 only at the pair of wall surfaces 412a and 422a, and between the top plate portion 111 and the connecting member 130 and between the bottom plate portion 121 and the connecting member 130. A gap is formed. In addition, the sound absorbing material Y is filled in such a gap, that is, between the top plate portion 111 and the connecting member 130 and between the bottom plate portion 121 and the connecting member 130.

  In addition, after the upper floor plate 410 and the lower floor plate 420 are arranged in the manufacturing process of the floor plate 400, the connecting member 130 is inserted between the adjacent top plate side protrusion 412 and bottom plate side protrusion 422. The mating recesses 412b and 422b are engaged. Accordingly, for example, the connecting member 130 can be held between the pair of wall surfaces 412a and 422a without bonding the connecting member 130 to the top plate side protruding portion 412 and the bottom plate side protruding portion 422. Therefore, the floor board 400 can be manufactured easily.

  Further, for example, when bonding the connecting member 130 to the top plate side projection 412 and the bottom plate side projection 422, not only the operation of positioning the relative positions of the upper floor plate 410 and the lower floor plate 420 is required, If a means for positioning the relative positions of the upper floor plate 410 and the lower floor plate 420 is not provided, the operation becomes extremely complicated. However, the upper floor plate 410 and the lower floor plate 420 are engaged by engaging the connecting member 130 with the engagement recesses 412b and 422b. Therefore, the workability can be improved and the floor board 400 can be manufactured efficiently.

  As described above, the present invention has been described based on the embodiments, but the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed.

  For example, it is naturally possible to combine part of the configuration in each of the above embodiments with part of the configuration in the other embodiments. For example, in the third embodiment, the case where the heat insulating material X is covered on the surface of the upper floor plate 310 and the lower floor plate 120 and facing the gap S has been described. May be filled. Moreover, although the said 4th Embodiment demonstrated the case where the sound-absorbing material Y was filled between the top-plate part 111 and the connection member 130, and between the bottom-plate part 121 and the connection member 130, upper floor board 410 and The heat insulating material X may be provided so as to cover the surface of the lower floor plate 420 between the top plate portion 111 and the connecting member 130 and the area facing the gap between the bottom plate portion 121 and the connecting member 130.

  In each of the above embodiments, the case where the top plate portion 111 and the bottom plate portion 121 are formed in a flat plate shape has been described. However, the present invention is not necessarily limited to this, and the surface of the top plate portion 111 or the bottom plate portion 121 (the floor plate 100). , 200, 300, and 400) may be formed in various shapes such as a wave shape.

  Moreover, the fixing | fixed part for fixing various facilities, such as a seat and an underfloor apparatus, is provided in the surface (surface which comprises the outer surface of the floor boards 100, 200, 300, 400) of the top-plate part 111 or the baseplate part 121, for example. May be. In this case, the work of attaching the various facilities to the floor boards 100, 200, 300, 400 is facilitated, the workability is improved, and the fixing part serves as a rib so that the upper floor boards 110, 310, 410 or The rigidity of the lower floor boards 120 and 420 is increased. Therefore, the mechanical strength of the floor boards 100, 200, 300, 400 can be further improved.

  Further, a sheet-like material may be covered on the surface of the top plate portion 111 or the bottom plate portion 121 (the surface constituting the outer surface of the floor plates 100, 200, 300, 400). Here, when a heat insulating material having a heat insulating performance or a sound absorbing material having a sound absorbing performance is used as the sheet-like material, the vibration proof performance and sound insulating performance of the floor boards 100, 200, 300, 400 are further improved. Can do.

  In each of the above embodiments, the top plate side projections 112, 312, 412 and the bottom plate side projections 122, 422 are orthogonal to the parallel arrangement direction of the top plate side projections 112, 312, 412 or the bottom plate side projections 122, 422. However, the present invention is not necessarily limited to this, and is orthogonal to the direction in which the top plate side projections 112, 312, 412 or the bottom plate side projections 122, 422 are juxtaposed. You may comprise so that it may extend in the direction intermittently. Here, when the top plate side projections 112, 312, 412 and the bottom plate side projections 122, 422 that are intermittently extended are intermittently connected by the connecting member 130, the floor plates 100, 200, 300, The influence of the external force applied to 400 is kept locally, the external force is prevented from affecting the entire floor plate 100, 200, 300, 400, and the mechanical strength of the floor plate 100, 200, 300, 400 is improved. be able to.

  In each of the above-described embodiments, silicon rubber is taken as an example of the material constituting the connecting member 130. However, the present invention is not necessarily limited to this, and may be made of a synthetic resin such as plastic, asphalt, or the like.

  In the third embodiment, the case where the support portion 312b is provided so as to protrude from the top-plate-side protrusion 312 is not necessarily limited to this, but both sides (from the wall surface 122a of the bottom-plate-side protrusion 122) ( A support portion formed in a projecting shape toward the left and right directions in FIG. 4 may be provided so that the connecting member 130 is supported by the support portion.

  In the second and fourth embodiments, the case where the sound absorbing material Y is filled between the top plate portion 111 and the connecting member 130 and between the bottom plate portion 121 and the connecting member 130 has been described. For example, the sound absorbing material Y may be filled only between either the top plate portion 111 and the connecting member 130 or between the bottom plate portion 121 and the connecting member 130.

(A) is a side view of the railway vehicle in one embodiment of this invention, (b) is a perspective sectional view of a vehicle structure. It is sectional drawing of the floor board in the arrow II direction view of FIG. It is sectional drawing of the floor board in 2nd Embodiment. It is sectional drawing of the floor board in 3rd Embodiment. It is sectional drawing of the floor board in 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Railcar 100,200,300,400 Floor board 110,310,410 Upper floor board 111 Top plate part 112,312,412 Top board side protrusion part 112a, 312a, 412a Wall surface (a part of a pair of wall surface)
312b Supporting part 412b Engaging recess 120, 420 Lower floor plate 121 Bottom plate part 122, 422 Bottom plate side protrusions 122a, 422a Wall surface (part of a pair of wall surfaces)
422b engaging recess 130 connecting member S gap X heat insulating material Y sound absorbing material

Claims (5)

In a rail vehicle equipped with a floor board that constitutes the floor of the guest room,
The floorboard is
It has a top plate portion formed in a plate shape and a plurality of top plate side projections protruding from the top plate portion, and the plurality of top plate side projection portions are arranged at a predetermined interval on one surface side of the top plate portion. An upper floor board extending in parallel across the
It has a bottom plate portion formed in a plate shape and a plurality of bottom plate side projections protruding from the bottom plate portion, and the plurality of bottom plate side projection portions are parallel to each other on one surface side of the bottom plate portion with a predetermined interval. An extended lower floor board, and
The lower floor plate and the upper floor plate are connected and a connecting member composed of a viscoelastic material is provided,
The top-plate-side projection and the bottom-plate-side projection are opposed to each other, and the bottom-plate-side projection is inserted between adjacent top-plate-side projections of the plurality of top-plate-side projections. The upper floor plate and the lower floor plate are arranged to face each other so that the top plate side protrusion is interposed between adjacent ones of the bottom plate side protrusions, and the top plate side protrusion and the bottom plate A pair of wall surfaces facing each other with the side protrusion are connected by the connecting member, and a gap is formed between the top plate and the connecting member and between the bottom plate and the connecting member. A featured railway vehicle.   The railway vehicle according to claim 1, further comprising a support portion protruding from at least one of the pair of wall surfaces, wherein the connecting member is supported by the support portion.   The railway vehicle according to claim 1, wherein the pair of wall surfaces are respectively provided with engaging recesses, and the coupling member is engaged with the engaging recesses.   Heat insulation having heat insulation performance on the surface of the upper floor plate and the lower floor plate and facing the gap formed between the top plate portion and the connecting member and between the bottom plate portion and the connecting member The railway vehicle according to any one of claims 1 to 3, wherein a material is covered.   A gap formed between the top plate portion and the connecting member and between the bottom plate portion and the connecting member is filled with a porous sound absorbing material having lower rigidity and sound absorbing performance than the connecting member. The railway vehicle according to any one of claims 1 to 4, wherein the railway vehicle is provided.

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