JP2016016673A - Rail vehicle equipped with long seat having armrest that incorporates impact relaxation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rail vehicle equipped with a long seat having a collision relaxation structure capable of suppressing a passenger's being thrown out of the long seat, and relaxing an impact applied to a passenger even when the rail vehicle equipped with a long seat (seat) to which an armrest is attached collides and slows down significantly in a short time.SOLUTION: In a rail vehicle equipped with a long seat including a backrest support part provided along a longitudinal direction of the rail vehicle for supporting a backrest, a seating surface support part provided along the backrest support part for supporting a seating surface, and an armrest that partitions the seating surface, the armrest includes a first slide part to which one end part of the armrest is connected and which slides along the backrest support part, and a connection part which rotatably connects the other end part of the armrest to the seating surface support part. An angle formed by the armrest and the backrest support part when a passenger collides with the armrest is an acute angle.SELECTED DRAWING: Figure 5

Description

  The present invention provides a rail vehicle that is provided with an impact mitigation structure on an armrest that divides a long seat and can reduce the impact acting on a passenger seated on the long seat when the rail vehicle collides, thereby improving the safety of the passenger. About.

  In the seat where a plurality of passengers are seated along the longitudinal direction of the rail vehicle (hereinafter sometimes referred to as a long seat), the passenger faces the direction intersecting the traveling direction of the rail vehicle, and the width direction of the rail vehicle Sit in the position facing the center (inside the car). When a rail vehicle equipped with such a long seat collides with an obstacle and greatly decelerates in a short time, the passenger slides on the long seat toward the traveling direction of the rail vehicle and collides with the end of the long seat. It can be thrown on the floor or hit another passenger.

  For this reason, sleeve partitions are provided at both ends in the longitudinal direction of the long seat, and armrests may be disposed between the seated passengers. In addition to the function of assisting passengers to stand and sit easily, the sleeve dividers and armrests limit the range in which passengers can move on long seats in the event of a collision. It has a function to reduce the risk of collision.

  In Patent Document 1, in order to relieve the impact acting on the passenger at the time of collision, the sleeve partition provided at both ends of the long seat incorporates an impact relaxation structure that relieves the impact when the passenger collides with the sleeve partition. Is disclosed. This is because, when an impact exceeding a predetermined acceleration acts on the sleeve partition, the parts constituting the sleeve partition are deformed to absorb the impact, and the impact acting on the passenger colliding with the sleeve partition is alleviated. It is a technology related to a long sheet having a sleeve partition with an impact absorbing function to enhance.

JP 2010-18143 A

  When a rail vehicle collides and decelerates greatly in a short time, a passenger seated on a long seat may collide with other passengers or sleeve dividers or armrests (primary collision). Furthermore, the passenger who collided primarily may be thrown out of the long seat and may be thrown out to the floor of the rail vehicle or may collide with a structure such as a handrail provided in the vehicle (secondary collision). In order to increase the safety of passengers in the event of a secondary collision, it is necessary to mitigate the impact on the passengers during a collision while controlling the passengers so that they can remain seated during the collision.

  The object of the present invention is to prevent the passenger from being thrown out of the long seat and prevent the passenger from being thrown out even if the rail vehicle provided with the long seat (seat) to which the armrest is attached collides and decelerates greatly in a short time. An object of the present invention is to provide a rail vehicle having a long seat having a collision mitigation structure capable of mitigating an applied impact.

  An object of the present invention is to provide a backrest support portion that is provided along the longitudinal direction of the rail vehicle and supports the backrest, a seat surface support portion that is provided along the backrest support portion and supports the seat surface, and partitions the seat surface In a rail vehicle having a long seat having an armrest, the armrest is connected to one end of the armrest and slides along the backrest support portion, and the other end of the armrest is a seat surface support portion. It is possible to solve the problem by a rail vehicle characterized in that an angle formed between the armrest and the backrest support portion becomes an acute angle when the passenger collides with the armrest.

  According to the present invention, even when a rail vehicle having a long seat (seat) to which an armrest is attached collides and greatly decelerates in a short time, it is possible to prevent the passenger from being thrown out of the long seat and It is possible to provide a rail vehicle having a long seat having a collision mitigation structure capable of mitigating an applied impact.

FIG. 1 is a schematic diagram showing the interior of a railway vehicle including a long seat. FIG. 2 is a diagram schematically illustrating an example of the behavior of a passenger seated on a long seat when a railway vehicle collides. FIG. 3 is a top view schematically showing the structure of the armrest incorporating the impact relaxation structure. FIG. 4 is a cross-sectional view (cross-section of FIG. 3A-A) crossing the longitudinal direction of a long sheet having an armrest with a built-in impact relaxation structure. FIG. 5 is a top view showing a state in which the armrest rotates to relieve the impact. FIG. 6 is a schematic view (top view) showing a state in which a passenger seated on a long seat having an armrest with a built-in impact relaxation structure is held in the seat. FIG. 7 is a top view showing the structure of the armrest that translates and rotates to relieve the impact. FIG. 8 is a top view showing another structure of an armrest that translates and rotates to relieve an impact.

  A rail vehicle including a long seat having an armrest with a built-in shock absorbing structure will be described below with reference to FIGS. 1 to 8. A rail vehicle is a general term for vehicles operating along a laid track, and indicates a rail vehicle, a streetcar, a new transportation system vehicle, a monorail vehicle, and the like. Hereinafter, a rail vehicle is taken as an example of a rail vehicle, and a long seat having an armrest with a built-in impact relaxation structure will be mainly described.

  First, three directions related to a railway vehicle including a long seat having an armrest with a built-in shock mitigation structure are the width direction (sleeper direction) 100 of the railway vehicle 1 and the longitudinal direction (rail direction) 110 of the railway vehicle 1. The height direction 120 of the railway vehicle 1 is defined. Hereinafter, the width direction 100, the longitudinal direction 110, and the height direction 120 are simply described.

  FIG. 1 is a schematic view showing the inside of a rail vehicle having a long seat. The railcar 1 includes a frame (floor structure) 10 that constitutes a floor surface, side structures 20 that are erected at both ends in the width direction 100 of the frame 10, and both ends in the longitudinal direction 110 of the frame. It is a hexahedron composed of a built-in wife structure (not shown) and a roof structure (not shown) placed on the side structure 20 and the upper end of the wife structure. The side structure 20 is provided with an opening such as a window 22. A long seat 60 is attached to the vehicle interior of the side structure 20 along the longitudinal direction 110, and sleeve partitions 64 are provided at both ends of the long seat 60, and discretely along the longitudinal direction 110 of the long seat 60. Each seating surface is partitioned by the armrest 63 provided.

  FIG. 2 is a diagram schematically illustrating an example of the behavior of a passenger seated on a long seat when a railway vehicle collides. The long seat 60 includes a seat surface 61 on which the passenger 81 sits, a backrest 62 on which the passenger 81 leans, an armrest 63 that partitions the seat surface (section) on which the passenger 81 sits, and sleeves that are disposed at both ends of the long seat 60. It consists of a partition 64 (see FIG. 1). Passenger behavior when a railway vehicle having a conventional long seat 60 that does not have an impact absorbing structure for absorbing an impact on the armrest 63 collides with an obstacle ahead while traveling (from right to left in the figure). Will be described. The passenger 81 first translates (slides) on the seat surface 61 in the traveling direction, and collides with the armrest 63 on the traveling direction side (see FIG. 2B). The lower side (lower body) of the passenger 81 is supported by the armrest 63, but the upper body of the passenger 81 is not supported, so the upper body tends to fall further in the traveling direction. In the case of a large collision, the back of the passenger 81 who collides with the armrest 63 and whose upper body is inclined in the traveling direction is separated from the backrest 62 and is thrown out to the front of the long seat 60 (in the direction of the arrow 150). The top surface of the floor) falls to the top surface of 10. At this time, when a plurality of passengers are seated on the adjacent seating surface, the seating surface passenger and the passenger collide, or another passenger overlaps on the passenger who has fallen on the floor, and falls It is assumed that there is.

  FIG. 3 is a top view schematically showing the structure of an armrest with a built-in impact relaxation structure, and FIG. 4 is a cross-sectional view crossing the longitudinal direction of a long sheet having an armrest with a built-in shock relaxation structure (FIG. 3A-A cross section). The long seat 60 includes a seat surface 61 and a backrest 62. The seat surface 61 is supported by seat surface support portions 71a and 71b spaced along the width direction 100, and the backrest 62 is in the height direction. It is supported by a seat support part 71 b and a back support part 72 that are spaced apart along 120.

  The seating surface support portions 71 a and 71 b and the backrest support portion 72 are held by L-shaped frames 65 that are discretely provided along the longitudinal direction 100, and the frame 65 is fixed to the side structure 20. A long seat 60 is provided in the railway vehicle (see FIG. 4). An L-shaped armrest 63 that divides the seat surface 61 of the long seat 60 is provided, one end of the armrest 63 is connected to the backrest support portion 62, and the other end is the seat surface support portion. 71b.

  The seat surface support portions 71a and 71b and the backrest support portion 72 are covered by the seat surface 61 or the backrest 62. However, in particular, the configuration of the backrest 62 is appropriately changed so that the configuration and the mounting state thereof can be easily explained. It is described as.

  One end portion of the armrest 63 is connected to the backrest support portion 72 via a slide portion 72a that can slide along the longitudinal direction 110, and the other end portion of the armrest 63 is connected to the seating surface support portion 71a. It is connected so as to be rotatable through 73a. Usually, since the armrest 63 has a function of partitioning the seating surface of the long seat 60, unless the large impact load in the longitudinal direction 110 acts on the armrest 63, the slide portion 72a is subjected to a large load exceeding a predetermined load. It is fixed to the back support 72 by a break pin that sometimes breaks and allows sliding, or by caulking.

  The slide portion 72a has a substantially T-shape formed of a member 72aL provided along the longitudinal direction 110 and a member 72aW provided along the width direction 100. One end of the armrest 63 is connected to the elongated hole of the member 72aW by the connection portion 73b, and when the slide portion 72a slides, the dimension between the slide portion 72a and the connection portion 73a increases. Since the connecting portion 73b can move along the long hole, the connection between both members is not broken.

  A shock absorber 77 is provided for mitigating the impact of the armrest 63 when the slide portion 72 a to which the armrest 63 is connected slides along the longitudinal direction 110. One end of the buffer 77 is connected to a slide part 72 a connected to the armrest 63, and the other end is connected to a fixing part 78 fixed to the backrest support part 72. The shock absorbers 77 are arranged in series via the armrests 63 in such a manner that the longitudinal direction thereof is along the back support portion 72. For this reason, when the slide part 72a slides, the armrest 63 (slide part 72a) compresses one buffer body 77, and in the process of pulling the other buffer body 77, the impact generated on the armrest 63 is alleviated. The buffer body 77 is configured by a spring (coil spring, bamboo scallop spring in which a strip is wound in a conical shape), an oil damper, or the like that alleviates the impact regardless of the traveling direction of the railway vehicle.

  FIG. 5 is a top view showing a state in which the armrest rotates to relieve an impact, and FIG. 6 schematically shows a state in which a passenger seated on a long seat having an armrest incorporating an impact relieving structure is held in the seat. It is a figure (top view). 5 and 6 schematically illustrate the behavior of the passenger 81 seated on the seat surface defined by the armrest 63 of the long seat 60 when the railway vehicle 1 is in contact with an obstacle or the like while traveling and greatly decelerates in a short time. FIG.

  When the railway vehicle 1 decelerates greatly in a short time, a large inertial force acts on the passenger 81 seated on the seating surface in the traveling direction (longitudinal direction 110) of the railway vehicle 1, so that the passenger 81 moves the upper surface of the seating surface 61. While slipping and colliding with the armrest 63, a force in the traveling direction of the railway vehicle 1 acts on the armrest 63. The fixing part (breaking pin or the like, not shown) of the slide part 72a of the armrest 63 collided with the passenger 81 is released, and the slide part 72a slides along the backrest support part 72 in the traveling direction of the railway vehicle 1, The armrest 63 rotates counterclockwise in the horizontal plane with the connecting portion 73a as a fulcrum.

  That is, when the passenger 81 collides with the armrest 63, the slide portion 72a connected to one end portion of the armrest 63 is such that the angle C between the armrest 63 and the backrest support portion 72 becomes an acute angle. The other end of the armrest 63 rotates about the connecting portion 73a as a fulcrum. At this time, the connecting portion 73b between one end of the armrest 63 and the member 72aW forming the slide portion 72a moves along the long hole of the member 72aW, and maintains the connection between the armrest 63 and the slide portion 72a.

  When the passenger 81 collides with the armrest 63, the break pin (caulking or the like) that fixes the slide portion 72a breaks, the slide portion 72a slides, and the armrest 63 turns counterclockwise around the connection portion 73 as a fulcrum. One shock absorber 77 relieves an impact acting on the armrest 63 while resisting a compressive load, and the other shock absorber 77 relieves an impact acting on the armrest 63 while resisting a tensile load. At this time, the backrest 62 side of the armrest 63 moves more greatly in the traveling direction of the railway vehicle 1 than the connection portion 73a side of the armrest 63, so the angle between the armrest 63 and the backrest support portion 72 is an acute angle C. Thus, the passenger 81 is guided in the direction 160 of the backrest 62 by the armrest 63 and is held in a state of being sandwiched between the armrest 63 and the backrest 62. For this reason, the passenger falls on the upper surface of the floor structure (underframe) 10, and the standing passenger and other passengers seated on the long seat 60 fall on the passenger thrown out on the floor structure 10. It is suppressed.

  Therefore, even when a rail vehicle equipped with a long seat (seat) to which an armrest is attached collides and decelerates greatly in a short time, the passenger is prevented from being thrown out of the long seat and the impact applied to the passenger is reduced. A rail vehicle having a long seat having a collision mitigation structure that can be provided can be provided.

  FIG. 7 is a top view showing the structure of the armrest that translates and rotates to relieve the impact. Only the parts different from the above description will be described in detail, and the description of parts common to the above description will be omitted. The armrest 63 shown in FIG. 7 includes a slide portion 75 connected to the other end portion of the armrest 63 (the opposite side of the backrest 62 of the armrest 63) by a connection portion 73a, and a buffer body 77a is provided on the slide portion 75. Is provided. The buffer body 77a is provided in such a manner that it is arranged in series along the seating surface support portion 71a via the slide portion 75, and the slide portion 75 and the buffer body 77a are connected by a connection portion 74a.

  The armrest 63 has a function of partitioning the seating surface of the long seat 60. For this reason, like the slide part 72a, the slide part 75 has a seating surface support part by a breakage pin or a caulking that breaks when a large load exceeding a predetermined load is applied and allows the slide part 75 to slide. It is fixed to 71a.

  The resistance of the slide portion 72a in the slide direction is set to be smaller than the resistance of the slide portion 75 in the slide direction. Therefore, when a large load exceeding a predetermined load is applied to the armrest 63 from right to left, the displacement A of the slide portion 72a becomes larger than the displacement B of the slide portion 75, and the armrest 63 rotates counterclockwise in the horizontal plane. To turn.

  When the railway vehicle 1 decelerates greatly in a short time, a large inertial force acts in the traveling direction (longitudinal direction 110) of the railway vehicle 1, so that the passenger 81 slides on the upper surface of the seat surface 61 and collides with the armrest 63, A force in the traveling direction of the railway vehicle 1 acts on 63. The slide part 72a of the armrest 63 collided with the passenger 81 and the fixing part (breaking pin, not shown) of the slide part 75 are released, the slide part 72a follows the back support part 72, and the slide part 75 supports the seat surface. The impact acting on the passenger 81 is reduced while sliding in the traveling direction of the railway vehicle 1 along the portion 71a. Since the resistance in the sliding direction of the slide part 72a is set smaller than that of the slide part 75, the armrest 63 rotates counterclockwise in the horizontal plane, and the passenger 81 is moved along the armrest 63 in the direction of the backrest 62. invite.

  When the slide portion 75 slides, one buffer 77a relieves the impact acting on the armrest 63 while resisting a compressive load, and the other shock absorber 77a relieves the impact acting on the armrest 63 while resisting a tensile load. To do. Since the buffer body 77a is connected to the slide portion 75, the shock can be effectively reduced even for the passenger 81 who sits shallowly on the seat surface 61. The armrest 63 is guided in the direction of the backrest 62 and is held so as to be sandwiched between the armrest 63 and the backrest 62.

  Since the passenger 81 is guided along the armrest 63 in the direction of the backrest 62 and is held by the armrest 63 and the backrest 62, the passenger 81 falls on the upper surface of the floor structure (underframe) 10 or is thrown out to the floor structure 10. It is possible to prevent the standing passenger and other passengers sitting on the long seat 60 from falling on the passenger.

  Therefore, even when a rail vehicle equipped with a long seat (seat) to which an armrest is attached collides and decelerates greatly in a short time, the passenger is prevented from being thrown out of the long seat and the impact applied to the passenger is reduced. A rail vehicle having a long seat having a collision mitigation structure that can be provided can be provided.

  FIG. 8 is a top view showing another structure of an armrest that translates and rotates to relieve an impact. Only the parts different from the above description will be described in detail, and the description of the parts common to the above description will be omitted. The armrest 63 shown in FIG. 8 includes a slide portion 72a at one end portion of the armrest 63, a slide portion 75 at the other end portion, and buffer bodies 77 (77a) at both slide portions. Yes. The spring constant of the buffer 77 connected to the slide part 72a is set smaller than the spring constant of the buffer 77a connected to the slide part 75. For this reason, when a large load exceeding a predetermined load is applied from the right to the left on the armrest 63, the displacement A of the slide portion 72a is larger than the displacement B of the slide portion 75. Therefore, the armrest 63 rotates counterclockwise in the horizontal plane. To turn.

  Since the shock absorber 77 is connected to the slide portion 72a and the shock absorber 77a is connected to the slide portion 75, the shock can be effectively reduced even for the passenger 81 who sits shallowly on the seat surface 61. . Since the passenger is guided by the armrest 63 in the direction of the backrest 62 and is held so as to be sandwiched between the armrest 63 and the backrest 62, the passenger falls down on the upper surface of the floor structure (underframe) 10 or is thrown out to the floor structure 10. It is possible to prevent the standing passenger and other passengers sitting on the long seat 60 from falling on the passenger.

  Therefore, even when a rail vehicle equipped with a long seat (seat) to which an armrest is attached collides and decelerates greatly in a short time, the passenger is prevented from being thrown out of the long seat and the impact applied to the passenger is reduced. A rail vehicle having a long seat having a collision mitigation structure that can be provided can be provided.

1 ... Railcar 10 ... Floor structure (underframe)
DESCRIPTION OF SYMBOLS 20 ... Side structure 22 ... Window 60 ... Seat 61 ... Seat surface 62 ... Backrest 63 ... Armrest 64 ... Sleeve partition 71a, 71b ... Seat surface support part 72 ... Backrest support part 72a ... Slide part 72aL, 72aW ... Member 73a, 73b ... Connection part 74 ... Connection part 75 ... Slide part 77, 77a ... Buffer body 81 ... Passenger 100 ... Width direction 110 ... Longitudinal direction 120 ... Height direction 150 ... Throw direction 160 ... Direction to be guided

Claims (8)

A backrest support portion provided along the longitudinal direction of the rail vehicle and supporting the backrest;
A seat surface support portion provided along the back support portion and supporting the seat surface;
An armrest that divides the seat;
In a rail vehicle equipped with a long seat having
The armrest is
A first slide part connected to one end of the armrest and sliding along the back support part;
A connecting portion that pivotally connects the other end of the armrest to the seat support portion, and an angle formed between the armrest and the backrest support portion when a passenger collides with the armrest is an acute angle Rail vehicle characterized by. In the rail vehicle according to claim 1,
The first slide portion has a substantially T-shape composed of a first member along the back support portion and a second member intersecting the first member,
A rail vehicle in which a long hole is provided in the second member, and the first slide member and the armrest are connected via the long hole. In the rail vehicle according to claim 2,
A rail vehicle characterized in that a first shock absorber for reducing an impact is provided in the first slide portion. In the rail vehicle according to claim 3,
The rail vehicle according to claim 1, wherein the first shock absorbers are connected in series in a manner along the backrest support portion via the first slide portion. In the rail vehicle according to claim 4,
The rail vehicle, wherein the connecting portion is supported by a second slide portion that can slide along the seating surface support portion. In the rail vehicle according to claim 5,
A rail vehicle characterized in that a second shock absorber for reducing an impact is provided in the second slide portion. In the rail vehicle according to claim 6,
The rail vehicle, wherein the second shock absorbers are connected in series in a manner along the seat surface support portion via the second slide portion. In the rail vehicle according to claim 7,
The rail vehicle according to claim 1, wherein the first buffer body and the second buffer body are coil springs, and a spring constant of the first buffer body is set smaller than a spring constant of the second buffer body.