Railway vehicles

Abstract

The present invention provides a railway vehicle that eliminates the need for a separate power source for exhaust and features a ventilation system that prevents backflow of air regardless of the direction of travel. [Solution] The railway vehicle according to the present invention comprises a side structure, an air conditioning system for taking in fresh air, a passenger compartment for passengers, a side entrance opening into the side structure, a sliding door for opening and closing the side entrance, a door pocket for storing the sliding door, an interior panel separating the door pocket from the passenger compartment, a gap between the side structure and the sliding door, a ventilation hole in the interior panel connected to the door pocket, a flow deflection structure protruding from the interior panel toward the door pocket, and projection structures located at both ends in the front-rear direction of the side entrance and protruding outward from the side structure toward the sleepers.

Description

Technical Field

[0002] , , , ,

[0005] ,

[0004] , , , , , , ,

[0003] , ,

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

Background Art

[0002] In recent years, the importance of ventilation inside railway vehicles has increased as a measure against infectious diseases. For example, in railway vehicles used for commuting without airtightness inside the vehicle, fresh air taken into the vehicle by an air conditioner is sent into the vehicle after adjusting the air flow temperature, and the air inside the vehicle is exhausted to the outside by opening and closing the doors and opening the side windows when the train stops at a station, thereby performing ventilation inside the vehicle.

[0003] Patent Document 1 discloses a railway vehicle characterized by discharging the air inside the passenger compartment to the outside through a door pocket for storing a sliding door.

[0004] The railway vehicle disclosed in this Patent Document 1 is configured to discharge the air inside the passenger compartment to the outside through the internal space of the door pocket, so that the air inside the passenger compartment is introduced into the internal space of the door pocket, and the air staying in the internal space of the door pocket can be replaced with the harmonized air inside the passenger compartment. As a result, the surface temperature of the interior panel separating the internal space of the door pocket and the passenger compartment can be brought close to the temperature of the air inside the passenger compartment, that is, the room temperature. Therefore, it is possible to suppress the impairment of the air conditioning inside the passenger compartment due to the radiant heat generated from the surface of such an interior panel, and to improve the comfort of passengers.

[0005] In addition, the railway vehicle disclosed in Patent Document 1 discharges the air introduced into the internal space of the door pocket to the outside through a drain pipe for discharging the water that has entered and accumulated in the internal space of the door pocket. That is, the drain pipe not only functions as a drain port for draining the water that has entered the door pocket, but also functions as an exhaust port for exhausting the air introduced into the door pocket. Therefore, it is not necessary to separately provide a means for exhaust in the door pocket, and the structure of the door pocket can be simplified accordingly.

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Patent No. 5235150 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] Incidentally, around a moving railway vehicle, an airflow is formed, induced by the high-speed movement of the vehicle. However, in the ventilation configuration disclosed in Patent Document 1, if the airflow collides with the drain pipe, there is a risk that ventilation will be impossible due to backflow of air. In addition, since railway vehicles move in both forward and backward directions, a ventilation configuration that does not cause backflow of air regardless of the direction of travel is desirable.

[0008] This invention has been made in view of the above problems, and aims to provide a railway vehicle that has a ventilation configuration that prevents backflow of air regardless of the direction of travel, while eliminating the need to provide a separate power source for exhaust. [Means for solving the problem]

[0009] One representative example of a railway vehicle according to the present invention, developed to solve the above problems, is: Side structure and, An air conditioning system that takes in fresh air, The passenger compartment where passengers and others board, A side entrance opening in the aforementioned side structure, A sliding door for opening and closing the aforementioned side entrance, A door pocket for storing the aforementioned sliding door, The interior panel that separates the aforementioned door pocket from the aforementioned guest room, Among railway vehicles having a gap between the side structure and the sliding door, The interior panel has a ventilation hole connected to the door pocket, A flow deflection structure protruding from the interior panel toward the door pocket side, A projection structure is located at both ends of the front-rear direction of the aforementioned side entrance and protrudes outward from the side structure in the direction of the sleepers, It is equipped with. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a railway vehicle having a ventilation structure that does not require separately providing power for exhaust and does not cause reverse flow of air regardless of the traveling direction.

[0011] In addition, the problems disclosed in the present application and the solutions thereto will be clarified by the column of the mode for carrying out the invention and the drawings.

Brief Description of the Drawings

[0012] [Figure 1] It is a side view showing a conventional form of a railway vehicle. [Figure 2] It is a front view of the railway vehicle in the IIa-IIa cross section of FIG. 1. [Figure 3] It is a partially enlarged view in the region IIc of FIG. 2. [Figure 4] It is a top view seen from inside the passenger compartment of the railway vehicle in the IIb-IIb cross section of FIG. 1. [Figure 5] It is a partially enlarged view in the region IIc seen from the front of the railway vehicle according to the first embodiment. [Figure 6] It is a top view in the IIb-IIb cross section of the railway vehicle according to the first embodiment. [Figure 7] It is a partially enlarged view in the region IIc seen from the front of the railway vehicle according to the second embodiment. [Figure 8] It is a top view in the IIb-IIb cross section of the railway vehicle according to the third embodiment.

Mode for Carrying Out the Invention

[0013] Hereinafter, embodiments of the railway vehicle according to the present invention will be described with reference to the drawings. First, in order to describe the configuration of the railway vehicle, each direction is defined. The longitudinal direction of the railway vehicle is defined as the x direction, the width direction of the railway vehicle is defined as the y direction, and the height direction of the railway vehicle is defined as the z direction. Hereinafter, they may be simply referred to as the x direction, the y direction, and the z direction.

[0014] FIG. 1 is a side view showing a conventional form of a railway vehicle. The railway vehicle includes a railway car body 1, an air conditioner 2 for taking in fresh air, a side entrance 31 opened in the railway car body 1, a sliding door 32 for opening and closing the side entrance 31, and a door pocket 33 for storing the sliding door 32.

[0015] When the sliding door 32 advances from the door pocket 33 toward the side entrance 31, the side entrance 31 is closed by the advanced sliding door 32. Also, when the sliding door 32 retreats toward the door pocket 33, the retreated sliding door 32 is stored in the door pocket 33 and the side entrance 31 is opened.

[0016] FIG. 2 is a front view of the railway vehicle in the IIa-IIa cross section of FIG. 1. The door pocket 33 for storing the sliding door 32 is composed of a side structure 34 and an interior panel 35 that separates the passenger compartment 4 and the door pocket 33.

[0017] When the side entrance 31 is closed, the air in the passenger compartment is blown out from the air conditioner 2 like the flow path wa, collides with the floor of the passenger compartment 4, then rises along the interior panel 35, and is recovered by the air conditioner 2. At this time, since exhaust from the side entrance 31 becomes impossible, fresh air cannot be taken in, and the ventilation performance deteriorates.

[0018] FIG. 3 is a partially enlarged view in the area IIc of FIG. 2.

[0019] FIG. 4 is a top view seen from inside the passenger compartment of the railway vehicle in the IIb-IIb cross section of FIG. 1. When the side entrance 31 is closed, the air outside the running vehicle flows along the side structure 34a and the sliding door 32a due to the Coanda effect like the flow path wb and collides with the side structure 34b.

[0020] When the side entrance 31 is closed, a space for the sliding door 32 is created in the door pocket 33. By providing ventilation holes in the interior panel 35, the door pocket 33 can be used as a passage for exhausting air from the passenger compartment through the gap 36. However, if a separate power source for exhaust is not provided in the door pocket 33, air from outside the vehicle that collides with the gap 36b will flow back into the door pocket 33b, preventing exhaust. Also, in the gap 36a, instead of power for exhaust, it is necessary to reduce the pressure compared to the surrounding area. In addition, since railway vehicles move in both forward and backward directions, it is necessary to have a configuration that allows exhaust regardless of the direction of travel, which is a challenge.

[0021] According to the railway vehicle structure in the embodiment described below, by installing ventilation holes 51 connected to the door pocket 33 in the interior panel 35, a flow deflection structure 52 protruding from the interior panel 35 toward the door pocket 33, and projection structures 53 located at both ends in the front-rear direction of the side entrance 31 and protruding outward from the side structure 34 toward the sleepers, it is possible to suppress collision of air outside the vehicle with the gap 36b regardless of the direction of travel, and to lower the pressure in the gap 36a compared to the surroundings. A specific embodiment thereof will be described below.

[0022] <First Embodiment> Figure 5 is a partially enlarged view from the front of region IIc of a railway vehicle according to the first embodiment, and Figure 6 is a top view from inside the passenger compartment of the railway vehicle according to the first embodiment. In Figure 5, the interior panel 35 shows a ventilation hole 51 connected to the door pocket 33, a flow deflection structure 52 protruding from the interior panel 35 toward the door pocket 33, and projection structures 53 located at both ends in the front-rear direction of the side entrance 31, protruding outward from the side structure 34 toward the sleepers. The ventilation hole 51 and the flow deflection structure 52 form an airflow shown in the channel wc, which directs the air from inside the passenger compartment, drawn in from the ventilation hole 51 between the side structure 34 and the interior panel 35, toward the door pocket 33 by causing it to collide with the flow deflection structure 52. In contrast, the projection structure 53a in the rail direction forward in Figure 6 forms an airflow shown in the channel wd, which, due to the Coanda effect, bounces outside the vehicle outward toward the sleepers and creates a low-pressure region (dead water region) in the gap 36a due to boundary layer separation. By being drawn into this low-pressure region, the air inside the passenger compartment is exhausted through the flow path wc into the gap 36a. In addition, the protruding structure 53a causes the air from outside the vehicle to be deflected outward in the direction of the sleepers, preventing it from colliding with the gap 36b, thus suppressing backflow into the door pocket 33b.

[0023] Furthermore, the airflow outside the vehicle shown in the flow path wb has the function of causing iron filings generated by the friction between the wheels and rails to adhere to the sliding door 32b. The iron filings adhering to the sliding door 32b spoil the appearance, making cleaning necessary, which is a problem. In the first embodiment, by forming the airflow shown in the flow path wd, the adhesion of iron filings to the sliding door 32b can be suppressed, making cleaning unnecessary.

[0024] Since railway vehicles move in both directions (forward and backward) along the rails, it is desirable that the ventilation holes 51 and the airflow deflection structure 52 be installed symmetrically in the forward and backward directions along the rails, with respect to the vertical surface of the central part of the sliding door 32.

[0025] The ventilation holes 51 should preferably be positioned facing downwards and perforated to prevent the suction of foreign matter.

[0026] In order to reduce pressure loss in the flow path wc, it is desirable that the joint portion of the flow deflection structure 52 with the interior panel 35 on the door pocket 33 side be in a smooth arc shape.

[0027] <Second Embodiment> Figure 7 is a partially enlarged view from the front of area IIc of the railway vehicle according to the second embodiment. In the second embodiment, the description of configurations common to the first embodiment will be omitted, and the focus will be on configurations unique to the second embodiment.

[0028] The second embodiment is characterized by the provision of ventilation holes 51 behind the luggage rack 54 that protrudes from the interior panel 35 toward the passenger compartment 4. This arrangement prevents passengers' hair and foreign objects from being sucked in when air is drawn into the passenger compartment through the ventilation holes 51.

[0029] <Third Embodiment> Figure 8 is a top view of the railway vehicle as seen from inside the passenger compartment according to the third embodiment. The description of the common parts with the previously described embodiments will be omitted, and the focus will be on the configurations unique to the third embodiment. In the first and second embodiments, protruding structures 53 were provided at both ends in the front-rear direction of the side entrance 31 and projecting outward from the side structure 34 in the direction of the sleepers. However, when outside air collides with the protruding structures 53, wind noise may be generated. Therefore, in the third embodiment, instead of the protruding structures 53, a recessed structure 55 is provided that drops inward from the side structure 34 in the direction of the sleepers, thereby suppressing the generation of wind noise while forming a flow path wd.

[0030] A railway vehicle with the above configuration can be provided that eliminates the need to separately provide power for exhaust in the door pocket 33, while also providing a ventilation configuration that prevents backflow of air regardless of the direction of travel.

[0031] This specification includes disclosures of the following inventions.

[0032] (First form) Side structure and, An air conditioning system that takes in fresh air, The passenger compartment where passengers and others board, A side entrance opening in the aforementioned side structure, A sliding door for opening and closing the aforementioned side entrance, A door pocket for storing the aforementioned sliding door, The interior panel that separates the aforementioned door pocket from the aforementioned guest room, Among railway vehicles having a gap between the aforementioned structure and the aforementioned sliding door, The interior panel has a ventilation hole connected to the door pocket, A flow deflection structure protruding from the interior panel toward the door pocket side, A projection structure is located at both ends of the front-rear direction of the aforementioned side entrance and protrudes outward from the side structure in the direction of the sleepers, A railway vehicle equipped with the following features.

[0033] (Second form) In the first form of railway vehicle, It has a luggage rack installed so as to protrude into the passenger compartment from the interior panel, A railway vehicle having the ventilation holes on the back of the luggage rack.

[0034] (Third form) In a railway vehicle of the first or second form, A railway vehicle having, instead of the aforementioned protruding structure, recessed structures located at both ends of the side entrance in the front-rear direction and recessed inward from the side structure in the direction of the sleepers.

[0035] It should be noted that the present invention is not limited to the embodiments described above, and can be implemented using any components without departing from the spirit of the invention.

[0036] The embodiments described above are merely examples, and the present invention is not limited to these, provided that the features of the invention are not impaired. Furthermore, although various embodiments have been described above, the present invention is not limited to these, and not all of these are necessarily essential to the solutions provided by the present invention. Other embodiments conceivable within the scope of the technical idea of ​​the present invention are also included within the scope of the present invention. [Explanation of symbols]

[0037] 1…Railway car body 2…Air conditioner 31...Side entrance 32... Sliding door 33... Door pocket 34... Side structure 35…Interior panels 36…Gap 4…Guest rooms 51...Ventilation hole 52…Noncurrent structure 53…Protrusion structure 54... Luggage rack 55…Recessed structure 90...Arrow indicating the direction of travel of a railway vehicle x... Rail (longitudinal direction) y... direction of the sleeper (width) z... Height direction wa~wd...flow path

Claims

1. Side structure and, An air conditioning system that takes in fresh air, The passenger compartment where passengers and others board, A side entrance opening in the aforementioned side structure, A sliding door for opening and closing the aforementioned side entrance, A door pocket for storing the aforementioned sliding door, The interior panel that separates the aforementioned door pocket from the aforementioned guest room, Among railway vehicles having a gap between the aforementioned structure and the aforementioned sliding door, The interior panel has a ventilation hole connected to the door pocket, A flow deflection structure protruding from the interior panel toward the door pocket side, A projection structure is located at both ends of the front-rear direction of the aforementioned side entrance and protrudes outward from the side structure in the direction of the sleepers, A railway vehicle equipped with the following features.

2. In the railway vehicle described in claim 1, It has a luggage rack installed so as to protrude into the passenger compartment from the interior panel, A railway vehicle having the ventilation holes on the back of the luggage rack.

3. In the railway vehicle according to claim 1 or 2, A railway vehicle having, instead of the aforementioned protruding structure, recessed structures located at both ends of the side entrance in the front-rear direction and recessed inward from the side structure in the direction of the sleepers.

Images