JP7500401B2 - Floor structure of moving object - Google Patents

Description

The present invention relates to floor structures for moving bodies such as railway cars.

For example, in passenger railcars, it is necessary to suppress vibration and noise in the floor in order to improve ride quality and comfort.
As an example of conventional technology relating to the suppression of vibrations in floor sections, Patent Document 1 describes the provision of a movable floor section inside the structure of a railway vehicle having a roof structure, side structure, and underframe, which is suspended from the side structure via connecting members and is capable of moving relatively in the left-right direction with respect to the structure.
In addition, Patent Document 2 describes that in order to improve the rigidity of the movable floor portion as described above, a pair of protrusions are provided horizontally spaced downward from the movable floor portion, and a tension member and an arch-shaped convex member are provided between them.

JP 2015-168321 A JP 2017-144829 A

For example, in a so-called suspended floor structure having a movable floor surface portion as disclosed in Patent Document 1, when occupants such as passengers or crew members walk through an aisle, for example, vibrations generated by the excitation force caused by their walking are not easily transmitted to components that constitute the structure, such as the frame, and the vibration energy remains within the movable floor surface portion, causing significant transmission of vibration to seats, etc., which can result in a deterioration of the riding comfort due to the vibrations.
In view of the above-mentioned problems, an object of the present invention is to provide a floor structure for a moving body that suppresses vibration of other parts when a part of a movable floor part that is displaceable relative to a side wall is vibrated.

In order to solve the above-mentioned problems, the floor structure of a movable body of the present invention is a floor structure of a movable body having a movable floor portion that is provided at the bottom of a space portion in which an object to be contained is accommodated, and that is capable of relative displacement in the horizontal direction so as to move closer to or away from a side wall portion provided on the side of the space portion, wherein the movable floor portion has a first portion provided in a certain area when viewed from the vertical direction, and a second portion at least a part of which is provided in an area different from the first portion, and the first portion and the second portion are capable of relative displacement.
According to this, when one of the first and second parts is excited and vibration occurs, the vibration transmission to the other part is suppressed, thereby improving the vibration, noise, and ride comfort felt by passengers in the other part.

In the present invention, a seat on which a passenger sits can be attached to the first portion, and a passageway along which the passenger walks can be provided to the second portion.
This suppresses the transmission of vibrations generated when the passageway is vibrated by the passenger walking to the seats, thereby improving the riding comfort of the passenger seated on the seats.

In the present invention, there is provided a floor structure for a moving body according to claim 1 or 2, wherein the second portion is attached so as to be displaceable relative to the first portion in the up-down direction.
According to this, when the second part is vibrated by an occupant walking, for example, the second part displaces relative to the first part in the vertical direction, thereby suppressing the vibration applied to the first part and reducing the vibration.

In the present invention, an elastic member can be provided between the second part and the first part, which generates a reaction force corresponding to the relative displacement of the second part with respect to the first part in the vertical direction.
According to this, the cushioning effect of the elastic member can further suppress the propagation of vibration between the first portion and the second portion, enhancing the above-mentioned effect.

In the present invention, the movable floor portion can be configured to have a fixed floor portion provided on a floor structure connected to the side wall portion below the movable floor portion, and the second portion can be configured to have a stopper portion that abuts against a member provided on the fixed floor portion when it descends by a predetermined amount or more relative to the first portion.
According to this, by transmitting vibrations in the passage portion to the fixed floor surface portion, it is possible to suppress the transmission of vibrations to the first portion.
In addition, excessive descent of the second part relative to the first part can be prevented, and if, for example, a passage portion is provided in the second part, excessive sinking that would make it difficult for occupants to walk can be prevented.

In the present invention, the first portion and the second portion may be supported so as to be independently displaceable relative to the side wall portion in a horizontal direction.
This makes it possible to suppress the transmission of vibrations generated when one of the first and second parts is vibrated to the other part, while also reducing the load on each part, making it easier to ensure rigidity.

In the present invention, a configuration may be adopted in which a flange portion protruding upward or downward is formed on at least a part of a peripheral edge portion of the first portion or the second portion when viewed in a vertical direction.
This makes it possible to improve the rigidity of the movable floor surface portion with a simple and lightweight structure, thereby improving the natural frequency and suppressing resonance with vibrations caused by passengers walking.

In the present invention, a portion of the flange portion formed on one of the first part and the second part can be formed to protrude downward, and the other of the first part and the second part can be provided with a recess portion formed to prevent interference with the flange portion.
This prevents the flange portion from protruding upward (into the space), thereby preventing a step from being formed in a passageway, for example, and improves the convenience of the moving body.

In the present invention, a portion of the flange portion formed on one of the first part and the second part can be formed to protrude upward and be attached to the other of the first part and the second part and extend along the base of a seat on which an occupant sits.
This allows the flange portion to prevent dust and other foreign matter from entering under the floor from near the base of the seat.

As described above, the present invention can provide a floor structure for a moving body that suppresses vibrations of other parts when a part of a movable floor part that can be displaced relative to a side wall is vibrated.

1 is a schematic cross-sectional view of a railway vehicle body having a first embodiment of a floor structure of a moving body to which the present invention is applied. FIG. 2 is a perspective view showing a schematic configuration of a movable bed surface section in the first embodiment. FIG. 2 is a cross-sectional view of the movable bed surface portion in the first embodiment, illustrating an unloaded state. FIG. 2 is a cross-sectional view of the movable floor surface portion in the first embodiment, showing the state in which it is loaded onto the passage portion. FIG. 11 is a schematic plan view of a second embodiment of a floor structure of a moving body to which the present invention is applied. 11 is a schematic cross-sectional view of a floor structure of a moving body of a second embodiment as viewed from the front-rear direction of the vehicle. FIG. FIG. 11 is a schematic exploded perspective view of a movable floor section in a floor structure of a moving body of a second embodiment. FIG. 8 is a schematic enlarged view of part VIII in FIG. 5 . 9 is a cross-sectional view taken along line IX-IX of FIG. 8 .

First Embodiment
Hereinafter, a first embodiment of a floor structure for a moving body to which the present invention is applied will be described.
The floor structure of a moving body according to the first embodiment is provided in, for example, a railway car.
FIG. 1 is a schematic cross-sectional view of a railway vehicle body according to a first embodiment, taken along a plane extending in the vertical direction and in the direction of sleepers.

A railway vehicle body 1 (hereinafter simply referred to as a "car body") is mounted on, for example, a pair of front and rear bogie trucks.
As shown in FIG. 1, the car body 1 has a substantially hexahedral structure (main body of the car body 1) consisting of a floor structure 10, a side structure 20, a roof structure 30, and a gable structure (not shown).

The floor structure 10 has a rectangular frame provided under the vehicle body 1, and is configured as a flat plate-like member extending substantially along the horizontal direction.
A pair of front and rear bogies are attached to the lower part of the underframe via a bolster spring system, a traction device, dampers, etc. (not shown).
In addition, various devices (not shown) are suspended from the lower part of the frame.
The floor structure 10 forms the underside of the vehicle body 1 .
The upper surface of the floor structure 10 functions as the fixed floor surface of the present invention.

The side structures 20 are formed so as to protrude upward from both ends of the floor structure 10 in the sleeper direction (car width direction) and are structures that constitute the side surfaces of the carbody 1 .
The side structure 20 is formed in a panel shape that is substantially aligned in the vehicle longitudinal direction and vertical direction.
The side structure 20 has openings for windows, doors, etc. formed therein.

The roof structure 30 is a structure that is provided between the upper ends of the left and right side structures 20 and forms the ceiling portion of the car body 1.
The end body structure (not shown) is provided at each of the front and rear ends of the car body 1 and is a structure that constitutes the end surface.
The end structure is formed in a panel shape extending substantially along the sleeper direction and the vertical direction.
The lower end, side end and upper end of the end structure are joined to the front and rear ends of the floor structure 10, the side structure 20 and the roof structure 30, respectively.
A through door is formed in the center of the end structure to allow passengers and crew to pass between the car and other cars.

The vehicle body 1 further includes an interior member 40, a movable floor surface portion 100, etc.
The interior member 40 is formed in a panel shape from, for example, a resin-based material, and is disposed along the inner surfaces of the side structure 20 and the roof structure 30 so as to be exposed inside the vehicle cabin.
A space is formed between the interior member 40 and the side structure 20, and substantially the entirety of a connecting member 150, described below, except for its lower end, is housed within this space.

The movable floor surface portion 100 is a member that constitutes the floor surface of the vehicle compartment on which occupants such as passengers and crew members walk and sit.
FIG. 2 is a perspective view illustrating a schematic configuration of the movable bed surface unit in the first embodiment.
FIG. 3 is a cross-sectional view of the movable floor surface portion in the first embodiment, showing an unloaded state (for example, a state in which no passenger is present).
FIG. 4 is a cross-sectional view of the movable floor surface portion in the first embodiment, showing a state in which the movable floor surface portion is loaded on a passage portion (for example, a state in which an occupant is placed on the movable floor surface portion).
The movable bed section 100 has a main body section 110, a passage section 120, an elastic body 130, a support member 140, a connecting member 150, etc.
In addition, in each of the drawings described above and below, characteristic parts are deformed, such as by enlarging them, in order to facilitate understanding, and the dimensions in the drawings do not necessarily represent the actual dimensions.

The main body 110 is formed in the shape of a panel extending substantially along a horizontal plane.
The main body 110 is formed to have, for example, a rectangular shape when viewed from above.
The ends (left and right side ends) of the main body 110 in the sleeper direction are disposed adjacent to the side structure 20 and the interior member 40 .
The main body 110 is supported by a connecting member 150 so as to be displaceable relative to the structure of the carbody 1 in the sleeper direction.
Seats (not shown) for passengers to sit on (typically similar to seats 211 in the second embodiment described below) are attached to both sides of the passageway 120 of the main body 110 in the sleeper direction.
A plurality of main bodies 110 are arranged in a row along the longitudinal direction within one car, and these are independently displaceable in the sleeper direction relative to the side structures 20 etc.
In the main body portion 110, the area where the passage portion 120 is not provided functions as a first portion of the present invention.

The main body portion 110 has a recess 111 and an opening 112 .
The recess 111 is formed by recessing the upper surface of the center portion in the sleeper direction in a stepped shape.
The recess 111 has a function of accommodating the passage portion 120 .
The opening 112 is formed penetrating the bottom surface of the recess 111 in the vertical direction.
The opening 112 is a portion through which a support member 140, which will be described later, is inserted.

The passage portion 120 is a panel-like member provided in the center of the main body portion 110 in the sleeper direction.
The passage portion 120 is provided mainly in an area where occupants walk when moving within the vehicle cabin.
The passage portion 120 is formed, for example, in a rectangular shape when viewed from above, and has a longitudinal direction along the front-rear direction of the vehicle.
The passage portion 120 is accommodated in the recess 111 of the main body portion 110 in a state in which it can be displaced relative to the main body portion 110 in the up-down direction.
The passageway 120 functions as a second part of the present invention.

The elastic body 130 is disposed between the lower surface of the passage portion 120 and the bottom surface of the recess 111 of the main body portion 110 .
The elastic body 130 is formed from an elastic material, such as a rubber material, or a porous body such as sponge or urethane foam.
The elastic body 130 elastically supports the passage portion 120 relative to the main body portion 110 .

The support member 140 is a columnar member that protrudes downward from the lower surface of the passage portion 120 .
The support member 140 is inserted into the opening 112 of the main body 110 and passes through the main body 110 , with the lower end protruding downward from the main body 110 .
In a neutral state where no load is placed on the passage section 120, the lower end of the support member 140 is arranged opposite, and spaced apart in the vertical direction, a joist 11, which is a member fixed to the floor structure 10 of the structure (a member provided on the fixed floor surface portion).
In this embodiment, the joists 11 are separate components from the floor structure 10 and are configured to be attached to the floor structure 10, but the joists may also be configured to be integrated with the floor structure 10 (fixed floor surface portion).
When the weight of an occupant or the like is applied to the passage 120, the passage 120 drops with the deformation of the elastic body 130, and the lower end of the support member 140 comes into contact with the joist 11, resulting in a so-called stopper contact state. The support member 140 functions as the stopper member of the present invention.
A plurality of support members 140 are provided, for example, dispersed in the sleeper direction of the vehicle, and elastic bodies 130 are disposed on both sides of each support member 140 .

As shown in FIG. 1 , the connecting members 150 support both ends of the movable floor section 100 in the sleeper direction (both ends of the main body section 110 ) by suspending them from the side structures 20 .
The connecting member 150 may be configured to include, for example, a wire rope, a rod whose upper and lower ends are supported so as to be swingable, or the like.
The upper end of the connecting member 150 is attached to the side structure 20 , and the lower end is attached to the movable floor section 100 .
A plurality of connecting members 150 are provided distributed in the front-rear direction of the vehicle, and may be configured to be provided at the four corners of one main body portion 110, for example.
The main portion of the connecting member 150 is housed in the space between the side structure 20 and the interior member 40 and is not exposed to the interior of the vehicle.

In order to verify the effects of the first embodiment described above, a vibration test was carried out using a model as described below.
The vibration test was carried out using models of railway vehicle bodies according to the first embodiment and comparative examples 1 and 2 of the present invention.
The model of the first embodiment uses an aluminum plate measuring 238 mm (sleeper direction) x 81 mm (front-to-rear direction) x 1.5 mm (plate thickness) as the main body 110 of the movable floor section 100, and is configured so that the four corners are suspended from the side of a box-shaped body simulating the structure using connecting members 150 (wire ropes).
The passage portion 120 is made of an aluminum plate measuring 50 mm (sleeper direction) x 81 mm (front-rear direction) x 1.5 mm (plate thickness), and is placed on the main body portion 110 via an elastic body 130 (sponge).

In the model of Comparative Example 1, the passage portion 120 was fixed to the main body portion 110 via a hard resin member instead of the elastic body 130 .
The model of Comparative Example 2 does not have the passage portion 120 and the elastic body 130, and only the main body portion 110 is supported by a suspended floor structure.
In this vibration test, a rubber ball with a diameter of 24 mm was dropped from a height of 100 mm onto the passageway 120 (or the center of the main body 110), and the rebound was caught while measuring the vibrations of the passageway and the points corresponding to the seating.

Table 1 shows a comparison of vibration acceleration levels at each position when a rubber ball was dropped into passage 120 (or a corresponding position) three times under each measurement condition.
The vibration acceleration level is an overall value (strictly speaking, a partial overall value from the 20 Hz band to the 2000 Hz band) obtained by power averaging the vibration acceleration for one second including the moment the rubber ball was dropped.
The sampling frequency was 5000 Hz, and the window function used was a rectangular window.
As shown in Table 1, in the case of Comparative Example 2 in which only the suspended floor (main body) was used, the vibration acceleration levels of the passageway and the seating area were approximately the same, but when the passageway was fixedly supported on the suspended floor (main body) as in Comparative Example 1, the vibration acceleration levels of the seating area increased by approximately 4.5 dB.
On the other hand, if the passage portion 120 is elastically supported by the main body portion 110 and the support member 140 is configured to come into contact with the body structure as the rubber ball falls, the vibration of the seat portion is reduced by 13.6 dB compared to the passage portion.

According to the first embodiment described above, the following effects can be obtained.
(1) By lowering the passageway 120 due to load such as the weight of the occupant, and transmitting vibrations of the passageway 120 to the floor structure 10 of the body structure via the support member 140, it is possible to suppress the transmission of vibrations to the main body 110 of the movable floor section 100.
In addition, when a load equivalent to the weight of an occupant is applied to the passageway portion 120, the support member 140 abuts against the joist 11 and functions as a stopper, thereby preventing the passageway portion 120 from descending excessively relative to the main body portion 110 and preventing excessive sinking that would make it difficult for the occupant to walk.
(2) When the passage portion 120 of the movable floor portion 100 is vibrated due to a dynamic load caused by an occupant walking, etc., the passage portion 120 is elastically supported by the main body portion 110 via the elastic body 130, thereby suppressing the transmission of vibration from the passage portion 120 to the main body portion 110, thereby improving the vibration, noise, and ride comfort felt by occupants seated on the seats.
(3) By disposing the elastic body 130 between the passage portion 120 and the main body portion 110, the cushioning effect of the elastic body 130 can further suppress the propagation of vibrations to the main body portion 110.

Second Embodiment
Next, a second embodiment of the floor structure of a moving body to which the present invention is applied will be described.
The same reference numerals are used for the parts common to the first embodiment described above, and the description will be omitted. The differences will be mainly described.
FIG. 5 is a schematic plan view of the floor structure of the moving body of the second embodiment as viewed from above.
FIG. 6 is a schematic cross-sectional view of a floor structure of a moving body according to the second embodiment, as viewed from the front-rear direction of the vehicle.
6(a), 6(b), and 6(c) are cross-sectional views taken along the lines aa, bb, and cc in FIG. 5, respectively.

In the second embodiment, a movable bed surface section 200, which will be described below, is provided instead of the movable bed surface section 100 of the first embodiment.
The movable floor surface portion 200 has a seat mounting portion 210, an aisle footrest portion 220, a dust seal 230, connecting members 150A, 150B, etc.

The seat mounting portion 210 is a portion to which a base portion 212 of a seat 211 on which a passenger or other occupant sits is attached.
The seat attachment portion 210 functions as the first part of the present invention.
The seat attachment portion 210 is formed in the shape of a panel extending substantially along a horizontal plane.
The seat mounting portion 210 has a rectangular shape when viewed from above, for example with its long side aligned along the sleeper direction, and is suspended from the side structure 20 at both ends in the sleeper direction by connecting members 150A similar to the connecting members 150 of the first embodiment.
The connecting members 150A are provided in plurality and spaced apart from one another in the front-rear direction of the seat attachment portion 210.
In the second embodiment, the vehicle is configured with a plurality of two-seater cross-seat type seats 211 arranged in the longitudinal direction of the vehicle, on which passengers sit facing the longitudinal direction, for example.
A plurality of seat attachment portions 210 are provided independently for each row of seats 211.

The seat attachment portion 210 is formed with a bolt hole 213 and an opening 214 .
The bolt hole 213 is a threaded hole into which a mechanical fastening element such as a bolt is inserted and fastened to fasten the base 212 of the seat 211 .
The opening 214 is a recess into which a flange portion 223 of the passage footrest portion 220 described later is inserted.
9, the opening 214 may be a recess whose lower end is closed and which does not penetrate the seat attachment part 210. By making the opening 214 non-penetrating in this manner, it is possible to prevent dirt, water, etc., which have entered through the gap between the adjacent flange parts 223 from scattering.
Also, the opening 214 may be a through hole that passes through the seat attachment part 210 in the vertical direction. By passing the opening 214 through in this manner, a clearance with the flange part 223 is secured to prevent interference, and vibration transmission due to contact can be prevented.
The opening 214 is provided in the center of the seat attachment portion 210 in a plan view, and is formed as a long hole having a longitudinal direction along the sleeper direction.

The aisle footrest 220 is a member that constitutes the aisle provided along the front-rear direction in the center of the vehicle in the sleeper direction, and also constitutes the floor surface portion of the portion on which the feet of a passenger seated on the seat 211 are placed.
The aisle foot rest 220 functions as the second part of the present invention.
The aisle footrest portions 220 are provided at locations where the seat attachment portions 210 are adjacent to each other.
The passageway footrest portion 220 is formed in the shape of a panel extending substantially along a horizontal plane.
The passage footrest portion 220 is configured by integrally forming a passage portion 221 and a footrest portion 222 .
The passage portion 221 is a portion formed in the center of the passage footrest portion 220 in the sleeper direction and extending in the front-rear direction of the vehicle.
The passage portion 221 is formed in a rectangular shape when viewed from above, for example, with its long side extending along the front-rear direction of the vehicle.

The footrest portion 222 is a portion that protrudes outward in the vehicle width direction along the sleeper direction from a side end portion of the middle portion of the passage portion 221 in the fore-aft direction.
The footrest portion 222 is formed in a rectangular shape when viewed from above, with the long side extending along the sleeper direction, for example.
With the above-described configuration, the planar shape of the passage footrest portion 220 is a so-called cross shape.

The aisle footrest 220 is suspended from the side structure 20 by connecting members 150B, which are similar to the connecting members 150 of the first embodiment, at both ends of the footrest 222 in the sleeper direction.
A plurality of connecting members 150B are provided spaced apart in the vehicle front-rear direction.
With the above-described configuration, each of the plurality of seat mounting portions 210 and the plurality of aisle footrest portions 220 can be independently displaced (swinged) relative to the car body 1 in the sleeper direction.
The seat mounting portion 210 and the aisle footrest portion 220 can be formed, for example, from an aluminum honeycomb panel having a known honeycomb structure formed between the upper and lower surfaces.

As shown in Figs. 5 and 6, a portion of the aisle footrest portion 220 is disposed above a portion of the seat attachment portion 210 so as to overlap with the upper side thereof in a plan view seen from above.
The portion of the passage portion 221 that projects from the footrest portion 222 in the vehicle front-rear direction is disposed so as to overlap substantially the entirety with the seat attachment portion 210 .
In addition, both end edges of the footrest portion 222 in the vehicle front-rear direction are also arranged to overlap with the seat attachment portion 210.
This edge is disposed adjacent to the base 212 of the seat 211 .

The dust seal 230 is provided between the seat mounting portion 210 and the aisle footrest portion 220, and is a member that prevents foreign objects from falling onto the floor structure 10 side.
The dust seal 230 is made of a flexible material such as a rubber material or sponge.
The dust seal 230 is disposed along the outer periphery of the aisle footrest portion 220 .

Here, if the bending rigidity of the aisle footrest portion 220 is insufficient against the load caused by the occupant walking, etc., and the natural frequency is low, there is a concern that harmonic resonance may occur due to vibrations caused by walking, for example, at about 1.6 to 2.3 Hz.
Therefore, in the second embodiment, as described above, the seat mounting portion 210 and the aisle footrest portion 220 are separated to distribute the load weight to each portion, and the bending rigidity of the aisle footrest portion 220 is improved by the flange portions 223, 224 described below.

FIG. 7 is a schematic exploded perspective view of the movable floor portion.
FIG. 8 is a schematic enlarged view of part VIII in FIG.
FIG. 9 is a cross-sectional view taken along line IX-IX of FIG.
The aisle footrest portion 220 has flange portions 223 and 224 .
It should be noted that the flange portions 223 and 224 are omitted in FIGS.
The flange portions 223 are formed to protrude downward along the edges of both ends of the passage portion 221 in the vehicle front-rear direction.
The lower half of the flange portion 223 is received in the opening 214 of the seat attachment portion 210 .
In addition, the flange portions 223 formed on a pair of adjacent passage foot rest portions 220 are inserted into one opening 214 in a state in which they face each other with a gap therebetween.
The opening 214 is formed with a generous dimension so as not to prevent the pair of aisle footrest portions 220 and the seat mounting portion 210 from moving independently relative to the car body 1 in the sleeper direction.

The flange portions 224 are formed to protrude upward along the edges of both ends of the passage portion 221 in the sleeper direction and along the edges of both ends of the footrest portion 222 in the vehicle front-rear direction.
The main portion of the flange portion 224 is disposed to extend along the base portion 212 of the seat 211 attached to the seat attachment portion 210 .

According to the second embodiment described above, the following effects can be obtained.
(1) It is possible to suppress the transmission of vibrations generated when one of the seat mounting portion 210 and the aisle footrest portion 220 is vibrated to the other, and it is also possible to reduce the load on each part, making it easier to ensure rigidity.
(2) By forming flange portions 223, 224 on the peripheral portion of the aisle footrest portion 220, the rigidity of the movable floor surface portion can be improved with a simple and lightweight configuration, and the natural frequency can be improved to suppress resonance with vibrations caused by the walking of occupants.
(3) By making the flange portion 223 formed on the passage portion 221 protrude downward and providing a recess 214 to accommodate it in the seat mounting portion 210, the flange portion is prevented from protruding upward (inside the space portion) and a step is prevented from being formed in the passage, thereby improving the convenience of the railway vehicle.
(4) By configuring the flange portion 224 formed on the footrest portion 222 to extend along the base 212 of the seat 211, the flange portion 224 can prevent foreign objects such as dust from entering from near the base 212 of the seat 211 toward the floor structure 10.

Other Embodiments
The present invention is not limited to the above-described embodiments , but various applications and modifications are possible.
(1) The shape, structure, material, manufacturing method, arrangement, etc. of each component constituting the floor structure of the moving body are not limited to the above-described embodiments and can be changed as appropriate.
(2) In each embodiment, a moving body is, for example, a railroad car. However, the present invention is not limited to this and can be applied to other moving bodies, for example, automobiles such as buses, airplanes, ships, and the like.
(3) In each embodiment, the movable floor portion is divided into a first portion and a second portion at the location where the passenger seats of the railway vehicle are installed and the aisle portion, but the manner of division and the purpose of each portion are not limited to this and can be changed as appropriate.
For example, the vehicle may be configured with a separate section for passengers and a section for carrying baggage, etc.
Further, the seats in each embodiment are cross seats facing the fore-aft direction of the vehicle, but may be so-called long seats facing inward in the direction of the sleepers.
In addition, cross seats and long seats may be combined, or movable seats that can be converted into cross seats and long seats may be used.
In each embodiment, the passage is provided at the center in the width direction of the movable body, but this is not limiting, and the passage may be offset to one side in the width direction of the movable body. Also, the passage may be provided at a plurality of locations in the width direction of the movable body.

REFERENCE SIGNS LIST 1 Railway vehicle body 10 Floor structure 11 Joist 20 Side structure 30 Roof structure 40 Interior member 100 Movable floor surface portion (first embodiment) 110 Main body portion 111 Recess 112 Opening 120 Passage portion 130 Elastic body 140 Support member 150, 150A, 150B Connecting member 200 Movable floor surface portion (second embodiment) 210 Seat attachment portion 211 Seat 212 Base portion 213 Bolt hole 214 Opening 220 Passage footrest portion 221 Passage portion 222 Footrest portion 223, 224 Flange portion 230 Dust seal

Claims (8)

A floor structure of a moving body having a movable floor section provided at a lower part of a space section in which an object to be contained is accommodated, the movable floor section being movable in a horizontal direction relative to a side wall section provided at a side of the space section so as to approach or move away from the side wall section,
The movable bed portion has a first portion provided in a partial area when viewed in a vertical direction, and a second portion at least a part of which is provided in an area different from the first portion,
The first portion and the second portion are relatively displaceable,
The first portion is provided with a main body portion or a seat mounting portion to which a seat on which a passenger sits is attached,
The second portion is provided with a passageway or a passageway footrest portion along which an occupant walks,
A floor structure for a moving body , characterized in that a portion of the passageway portion or the passageway footrest portion is arranged so as to overlap above a portion of the main body portion or the seat mounting portion . The floor structure of a moving body according to claim 1 , wherein the second portion is attached so as to be displaceable relative to the first portion in the up-down direction. The floor structure of a moving body as described in claim 2, characterized in that an elastic member is provided between the second part and the first part, which generates a reaction force in response to the relative displacement of the second part relative to the first part in the vertical direction. A fixed floor surface portion is provided on a floor structure connected to the side wall portion below the movable floor surface portion,
The floor structure of a movable body as described in claim 2 or claim 3 , characterized in that the second portion has a stopper portion that abuts against a member provided on the fixed floor portion when it descends by more than a predetermined amount relative to the first portion. 2. The floor structure of a moving body according to claim 1 , wherein the first portion and the second portion are supported so as to be independently displaceable relative to the side wall in a horizontal direction. A floor structure of a moving body having a movable floor section provided at a lower part of a space section in which an object to be contained is accommodated, the movable floor section being movable in a horizontal direction relative to a side wall section provided at a side of the space section so as to approach or move away from the side wall section,
The movable bed portion has a first portion provided in a partial area when viewed in a vertical direction, and a second portion at least a part of which is provided in an area different from the first portion,
The first portion and the second portion are relatively displaceable,
the first portion and the second portion are supported so as to be independently displaceable relative to the side wall portion in a horizontal direction,
A floor structure for a moving body, characterized in that a flange portion protruding upward or downward is formed on at least a part of a peripheral portion of the first portion or the second portion when viewed in a vertical direction. a part of the flange portion formed on one of the first portion and the second portion is formed to protrude downward,
7. The floor structure of a moving body according to claim 6 , wherein the other of the first portion and the second portion is provided with a recess formed to prevent interference with the flange portion. The floor structure of a moving body as described in claim 6, characterized in that a portion of the flange portion formed on one of the first part and the second part is formed to protrude upward and extends along a base of a seat on which an occupant sits that is attached to the other of the first part and the second part.

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