Railway vehicle

Abstract

To provide a railway vehicle capable of constructing a highly reliable seal for a side hinged door with a small number of manufacturing steps.SOLUTION: The railway vehicle includes: a side structure; an opening portion provided in the side structure; a side hinged door 12 configured to close the opening portion; a door pillar 22 provided on a vehicle interior side of a peripheral edge portion of the opening portion; a retainer 24 provided on the door pillar 22; and an expandable seal rubber 25 gripped by the retainer 24 and expanded by pumped air. The retainer 24 includes a seal damming portion 24a that protrudes toward the opening portion.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a railway vehicle.

Background Art

[0002] In railway vehicles that run at high speeds such as the Shinkansen (registered trademark), in order to suppress the fluctuation of the internal pressure caused by the fluctuation of the external pressure when passing through a tunnel at high speed, which makes the crew and passengers feel uncomfortable aurally, an airtight structure is adopted to keep the inside of the vehicle, such as the crew's compartment and the general passenger compartment, airtight. More specifically, a railway vehicle is provided with side-sliding doors that can slide and are opened when passengers or the like board and alight from the railway vehicle at the station platform and are closed when the railway vehicle is running. When the railway vehicle reaches a predetermined speed or more, the periphery of the closed side-sliding door is pressed toward the periphery of the opening of the side structure that forms the side of the railway vehicle to maintain airtightness.

[0003] On the other hand, the leading vehicle has a side-opening door through which the crew gets on and off the driver's cab, in addition to the side-sliding doors used by passengers or the like for boarding and alighting. The side-opening door is a door that rotates toward the inside of the driver's cab with a hinge provided on one vertical edge of the side-opening door as a fulcrum.

[0004] Patent Document 1 discloses a side-opening door device for a railway vehicle that runs at high speed. This side-opening door device is a side-opening door device provided at a door opening leading to the conductor's compartment, and includes an inward-opening door body that is attached to the vehicle body by a hinge and opens and closes the door opening leading to the conductor's compartment of the vehicle body, a handle for opening and closing the door body, a latch interlocked with the handle, a switch that detects the opening and closing of the door body and outputs a signal, an inward-opening window frame that is attached to the door body by a hinge and opens and closes the window opening, an expandable sealing rubber disposed at the peripheral portions of the door opening of the vehicle body and the window opening of the door body and contacting the peripheral portions of the window frame of the door body and the window opening of the door body, and a control valve installed on the vehicle body side for opening and closing a circuit for supplying air to the expandable sealing rubber. The circuit for supplying air to the expandable sealing rubber is controlled by the opening and closing signal of the door body and the speed signal of the vehicle.

Prior Art Documents

Patent Document

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the prior art, a side-opening door provided with an opening in a side structure forming the side of a railway vehicle (crew compartment) is provided with expandable sealing rubber at the entire peripheral edge of the opening in the side structure in order to maintain airtightness when the side-opening door is closed. When the railway vehicle reaches a predetermined speed or higher, it is provided with a mechanism for pumping air into the expandable sealing rubber.

[0007] A part of the expandable sealing rubber that has been pumped with air and expanded abuts against the entire peripheral edge of the side-opening door that is rotatably provided at the opening of the side structure via a hinge, maintaining the airtightness of the crew compartment.

[0008] The side structure of a railway vehicle is assembled by welding or the like. For this reason, due to distortion or the like associated with welding or the like, there is a possibility that the flatness of the peripheral edge of the opening provided in the side structure cannot always be ensured. Therefore, it is necessary to seal the periphery of the retainer that grips the expandable sealing rubber and the peripheral edge of the side structure (opening) with a sealing material.

[0009] In addition, since a part of the expandable sealing rubber that has been pumped with air and expanded and abuts against the peripheral edge of the side-opening door may adhere to the peripheral edge of the side-opening door, there has been a concern that a part of the expandable sealing rubber adhered to the peripheral edge of the side opening may fall off from the retainer.

[0010] An object of the present invention is to provide a railway vehicle capable of constructing a highly reliable seal for a side-opening door with a small number of manufacturing man-hours.

Means for Solving the Problems

[0011] To solve the above problems, one of the typical railway vehicles of the present invention is a side structure, an opening provided in the side structure, a side-opening door that closes the opening, a door post provided on the inner side of the peripheral edge of the opening, a retainer provided on the door post, In a railway vehicle having an expandable seal rubber that is gripped by the retainer and inflated by air being pumped, The retainer is achieved by having a seal weir portion that protrudes toward the opening and forms a space for filling a sealing material between the retainer and the door post.

Advantages of the Invention

[0012] According to the present invention, it is possible to provide a railway vehicle capable of constructing a highly reliable seal for a side-opening door with a small number of manufacturing man-hours. Problems, configurations, and effects other than the above will be clarified by the description of the following embodiments.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the directions in each figure are defined. The longitudinal (rail) direction of the leading vehicle is defined as the x direction, the width (sleeper) direction of the leading vehicle is defined as the y direction, and the height direction of the leading vehicle intersecting the x direction and the y direction is defined as the z direction. Hereinafter, the x direction, the y direction, and the z direction may be referred to.

[0015] FIG. 1 is a cross-sectional view in the horizontal plane of the leading vehicle of a railway vehicle. The leading vehicle 1 includes a frame forming a floor surface, side structures 20 erected at both ends in the y direction of the frame, a roof structure placed on the upper ends of the side structures 20, and a gable structure erected at one end in the x direction of the frame. The other end in the x direction of the frame is a three-dimensional head portion with a cross-sectional shape continuously changing along the x direction and intersecting the x direction, and is provided with a driver's cab (a part of the crew compartment 4), identification lights (such as headlights), couplers, etc.

[0016] The leading vehicle 1 consists of a tip portion 5, a crew compartment 4 following the tip portion 5, and a general passenger compartment 6 following the crew compartment 4. The side structure 20 separating the crew compartment 4 from the outside is provided with a crew entrance / exit (also referred to as an opening) 10 through which the crew gets on and off, and the crew entrance / exit 10 is provided with an in-swinging side door 12 that rotates in the direction of arrow C around the z axis. Similarly, the side structure 20 separating the general passenger compartment from the outside is provided with an opening through which passengers and the like get on and off, and has a side sliding door 14 that slides along the x direction.

[0017] FIG. 2 is a cross-sectional view (an enlarged view of part A in FIG. 1) intersecting the height direction of the side door provided for the crew compartment of the leading vehicle. The side door 12 shown by a two-dot chain line for the outer shape is an opening door that rotates toward the inside of the crew compartment, and the rotation axis of the side door 12 is provided in the vicinity of a door post 22 provided along with the side structure 20 in the z-axis direction. When the side door 12 closes the crew entrance / exit 10, a part of the side door 12 forms the same plane as the side structure 20, suppressing the disturbance of the air flowing along the outer surface of the leading vehicle.

[0018] FIG. 3 is a cross-sectional view in the height direction (an enlarged view of part B in FIG. 2) of an airtight mechanism (when open) provided between a door post provided on the side structure of the leading vehicle and a side-opening door, and FIG. 4 is a cross-sectional view in the height direction (an enlarged view of part B in FIG. 2) of an airtight mechanism (when closed) provided between a door post provided on the side structure of the leading vehicle and a side-opening door. FIG. 5 is a cross-sectional view intersecting the height direction of a retainer that grips an expandable seal rubber constituting the airtight mechanism.

[0019] The door post 22 has a door post inclined portion 22s that extends from the side structure 20 (FIG. 1) toward the inside of the passenger compartment 4 of the leading vehicle (provided along the substantially y direction), and a door post parallel portion 22h that is connected to the door post inclined portion 22s and extends along the x direction. In a state where the side-opening door 12 is closed, the door post parallel portion 22h faces a side-opening door parallel portion 12h provided at the outer edge portion of the side-opening door 12.

[0020] The door post parallel portion 22h has a retainer 24 provided along the z direction, and the retainer 24 holds an expandable seal rubber 25. When the railway vehicle (the leading vehicle 1) reaches a predetermined speed or higher, air is press-fitted into the expandable seal rubber 25, and it is guided by a pair of seal rubber gripping portions 24c (FIG. 5) of the retainer 24 and expands in the y direction. The expanded expandable seal rubber 25 abuts against the side-opening door parallel portion 12h, reliably sealing the gap between the side structure 20 (including the door post 22) and the side-opening door 12. Hereinafter, the expandable seal rubber 25 is simply referred to as the seal rubber 25.

[0021] The retainer 24 is fixed to the door post 22 (door post parallel portion 22h) with a screw 26 via a liner 27 that adjusts the mounting dimension in the y direction on the inner side of the door post parallel portion 22h of the door post 22 connected to the side structure 20. Since the screws 26 are provided discretely along the z direction, it is necessary to fill the minute (local) gaps between the door post 22 (door post parallel portion 22h), the liner 27, and the retainer 24 located between the screws 26. Therefore, in order to enhance airtightness and suppress the intrusion of rainwater or the like, seal portions 40a, 40b, and 40c are arranged along the longitudinal direction (z direction) of the retainer 24 for sealing.

[0022] When a railway vehicle traveling at high speed passes through a tunnel, the air inside the tunnel is compressed by the entering railway vehicle, generating a compression wave that propagates at the speed of sound in the direction of the railway vehicle's travel. This compression wave undergoes a phase reversal at the exit of the tunnel and becomes an expansion wave, propagating through the tunnel towards the entrance of the tunnel. For this reason, the external pressure of the railway vehicle passing through the tunnel varies greatly in a short period of time, either on the plus side due to the compression wave or on the minus side due to the expansion wave, with respect to the atmospheric pressure.

[0023] In addition to the side-sliding door 14 for passengers to board and alight, the leading vehicle equipped with the side-opening door 12 for crew members to board and alight has many openings in the side structure 20. Therefore, due to the variation of the external pressure, it is necessary to enhance the sealing performance between the peripheral part of the crew boarding and alighting opening 10 and the peripheral part of the side-opening door 12 to prevent rainwater, etc. from entering the interior of the crew's cabin 4 and to maintain airtightness, so that air does not enter or exit.

[0024] The seals that contribute to maintaining airtightness include the seal weir portion 24a of the retainer 24, the seal portion 40a that straddles one side surface of the liner 27 and the door post 22, the seal portion 40b between the bottom portion 24e of the retainer 24 (Fig. 5) and the surface of the liner 27 on the opposite side of the door post 22, and the seal portion 40c that straddles the side surface of the retainer 24, the other side surface of the liner 27, and the door post 22.

[0025] <Seal configuration> As shown in Fig. 5, the seal rubber housing portion 24b of the retainer 24 that grips the seal rubber 25 is in a groove shape composed of the bottom portion 24e and a pair of seal rubber gripping portions 24c that are connected to both ends of the bottom portion 24e in the x direction and stand upright in the y direction. One of the seal rubber gripping portions 24c is provided with a seal weir portion 24a that protrudes in the x direction. A space (concave depression) for filling a sealing material is formed between the seal weir portion 24a and the door post 22.

[0026] When the retainer 24 is fixed to the pillar parallel portion 22h, the tip 24ap of the seal weir portion is located near the virtual extension surface 22sp (Fig. 3) that extends the side of the side-opening door 12 of the pillar inclined portion 22s of the pillar 22. The seal weir portion 24a protruding toward the side of the crew entrance 10 may be configured as a separate part from the retainer 24 and then connected to the seal rubber gripping portion 24c of the retainer 24, or may be provided integrally with one of the seal rubber gripping portions 24c of the retainer 24 as shown in Fig. 5. When provided integrally, it may be composed of an extruded profile made of an aluminum alloy extruded along the z direction.

[0027] In the retainer 24, a pair of convex portions 24d protruding in a manner facing each other in the x direction are provided near the connection portion with the bottom 24e of the pair of seal rubber gripping portions 24c. Further, in the retainer 24, two concave portions 24f (see Fig. 5) formed along the z direction are provided on the surface (the surface on the side of the pillar 22) opposite to the seal rubber accommodating portion 24b of the bottom 24e.

[0028] As shown in Fig. 4, the seal rubber 25 accommodated in the retainer 24 is composed of a seal rubber bottom 25e and a body portion 25g connected to the seal rubber bottom 25e. An air bag 25a into which high-pressure air is pumped when the railway vehicle reaches a predetermined speed or higher is formed in the space surrounded by the seal rubber bottom 25e and the body portion 25g. Near the connection portion between the seal rubber bottom 25e and the body portion 25g, a pair of seal rubber concave portions 25d into which the convex portions 24d of the retainer 24 are fitted are provided.

[0029] <Sealing effect> Since the retainer 24 is provided with the seal weir portion 24a, the operation (arrangement) of preparing a separate member for weir-sealing the seal portion 40a and the operation of fixing can be omitted, so that the seal weir portion 24a of the retainer 24, one side surface of the liner 27, and the seal portion 40a straddling the pillar 22 can be formed with a small number of manufacturing man-hours.

[0030] Furthermore, when the retainer 24 is fixed to the pillar parallel portion 22h, since the tip portion 24ap of the seal weir blocking portion is located in the vicinity of the virtual extension surface 22sp that extends the side of the side-opening door 12 of the pillar inclined portion 22s of the pillar 22, when constructing the seal portion 40a, if a spatula for forming a fluid sealant is moved along the z-direction in a manner straddling the pillar inclined portion 22s and the tip portion 24ap of the seal weir blocking portion, the sealant can be pushed into the indentation and filled in a short time, and can be accurately formed in a shape along the pillar inclined portion 22s.

[0031] Furthermore, since the bottom portion 24e of the retainer 24 is provided with a recess 24f for holding the sealant, by attaching the retainer 24 to the liner 27 after filling the recess 24f with the sealant, a seal portion 40b for sealing between the bottom portion 24e of the retainer 24 and the surface on the opposite side of the side of the pillar 22 (pillar parallel portion 22h) of the liner 27 can be easily formed.

[0032] Furthermore, since the retainer 24 is provided with a seal rubber gripping portion 24c, the seal portion 40c can be easily formed using a spatula or the like so as to straddle the side surface of the seal rubber gripping portion 24c, the other side surface of the liner 27, and the pillar 22.

[0033] With the above configuration, the seal portions 40a, 40b, and 40c can be formed between the pillar 22 and the retainer 24 with a small number of working man-hours. Thereby, the airtightness and watertightness between the side-opening door 12 of the leading vehicle 1 and the crew entrance of the side structure 20 can be maintained, and in particular, the intrusion of rainwater or the like and the entry and exit of air along the path indicated by the arrow D can be more reliably prevented.

[0034] Also, since the retainer 24 for gripping the seal rubber 25 is provided with a convex portion 24d, by providing the seal rubber 25 with a seal rubber recess 25d into which the convex portion 24d fits, even when air is pumped into the air bag 25a of the seal rubber 25 to expand the seal rubber 25, the state in which the seal rubber 25 is gripped by the retainer 24 can be surely maintained.

[0035] Therefore, even if the contact portion 25b of the sealing rubber 25 adheres to the side-opening door 12 with a high pressure and, in the unlikely event that the contact portion 25b adheres to the side-opening door 12, the sealing rubber 25 can be prevented from detaching from the retainer 24.

[0036] Therefore, it is possible to provide a railway vehicle including a side-opening door having a highly reliable expandable sealing rubber that can surely seal between a retainer that holds the expandable sealing rubber and a peripheral edge of an opening of a side structure with a small number of manufacturing man-hours, and that is unlikely to detach from the retainer even when the expandable sealing rubber adheres to a peripheral edge portion of the side-opening door.

Explanation of Signs

[0037] 1…Leading vehicle, 4…Crew's compartment, 5…Tip portion, 6…General passenger compartment, 10…Crew's entrance / exit (opening), 12…Side-opening door (for crew), 12h…Side-opening door parallel portion, 14…Sliding door (for passengers), 20…Side structure, 22…Door post, 22s…Inclined portion of door post, 22sp…Virtual extension plane, 22h…Parallel portion of door post, 24…Retainer, 24a…Sealing dam portion, 24ap…Tip portion of sealing dam portion, 24b…Sealing rubber housing portion, 24c…Sealing rubber gripping portion, 24d…Protrusion, 24dp…Tip portion of protrusion, 24e…Bottom portion, 24f…Recessed portion, 25…Sealing rubber, 25a…Air bag, 25b…Contact portion, 25d…Sealing rubber recessed portion, 25e…Sealing rubber bottom portion, 25g…Barrel portion, 26…Screw, 27…Liner, 40a~40c…Sealing portions, C…Arrow indicating the opening / closing direction, D…Arrow indicating the intrusion path of air, rainwater, etc., x…Longitudinal (rail direction), y…Width (sleeper) direction, z…Height direction

Claims

1. A side structure, an opening provided in the side structure, a side-opening door for closing the opening, a door post provided on the inner side of the vehicle of the peripheral edge of the opening, a retainer provided on the door post, and an inflatable seal rubber that is gripped by the retainer and inflated by air being pumped. In a railway vehicle having these components, the retainer has a seal weir portion that protrudes toward the opening and forms a space for filling a sealing material between the retainer and the door post. A railway vehicle characterized by this.

2. In the railway vehicle according to Claim 1, the door post has a door post inclined portion along the substantially width direction of the railway vehicle, and a door post parallel portion that connects to the door post inclined portion and extends along the longitudinal direction of the railway vehicle. The retainer is fixed to the door post parallel portion, and the retainer has a seal portion for sealing between the door post inclined portion and the seal weir portion. A railway vehicle characterized by this.

3. In the railway vehicle according to Claim 2, the retainer has a bottom portion fixed to the door post parallel portion, a pair of seal rubber gripping portions that connect to both longitudinal ends of the bottom portion in the longitudinal direction of the railway vehicle and stand upright in the width direction of the railway vehicle, and a pair of convex portions that protrude in a facing manner along the longitudinal direction of the railway vehicle from the seal rubber gripping portions near the bottom portion. The seal weir portion is connected to one of the seal rubber gripping portions. A railway vehicle characterized by this.

4. In the railway vehicle according to Claim 3, the inflatable seal rubber has a seal rubber bottom portion, a body portion connected to the seal rubber bottom portion, an air bag formed by the seal rubber bottom portion and the body portion, and a pair of seal rubber recesses near the connection portion between the seal rubber bottom portion and the body portion. The inflatable seal rubber is gripped by the retainer in such a manner that the seal rubber recesses fit onto the convex portions of the retainer. A railway vehicle characterized by this.

5. In the railway vehicle according to Claim 1, the retainer is connected to the door post via a liner. A railway vehicle characterized by this.

6. In the railway vehicle according to Claim 5, a seal portion is formed so as to straddle the door post, the liner, and the seal weir portion. A railway vehicle characterized by this.

7. In the railway vehicle according to Claim 5, the retainer has a recess facing the liner. ​ ​ ​ ​ A seal portion is formed between the concave portion and the liner. A railway vehicle characterized by this. **Claim 8** In the railway vehicle according to claim 3, The retainer is connected to the door post via the liner, A seal portion is formed so as to straddle the door post, the liner, and the seal rubber gripping portion. A railway vehicle characterized by this. **Claim 9** In the railway vehicle according to claim 1, The retainer is formed from an extruded profile. A railway vehicle characterized by this.

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