Platform barriers

Abstract

To provide a platform fence where an emergency exit is opened by offset movement of an emergency door to a platform side, which reduces a projection amount to the platform side.SOLUTION: A first door pocket part 11 of a platform fence 2 supports an emergency door 50 so as to enable offset movement between a normal position where the side face on a platform side of a door pocket side face cover part 13 and the side face on a platform side of an emergency door panel part 52 constitute a substantially the same extension plane, and an offset position where the emergency door panel part 52 is positioned on a side closer to the platform side than the door pocket side face cover part 13, and supports the emergency door 50 so as to enable slide movement in a platform longitudinal direction at the offset position. The emergency door 50 has a vertical swing mechanism 56 which enables an emergency door upper cover part 54 to vertically swing between an interference position interfering with a door pocket upper face cover part in slide movement of the emergency door 50, and a non-interference position not interfering therewith.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a platform fence.

Background Art

[0002] A platform fence is a safety facility installed along the longitudinal direction of a platform at the edge of a platform such as a railway station, and is also called a "platform door", etc., and has a movable door for opening and closing the boarding and alighting opening. In addition, some platform fences are provided with an emergency door for allowing passengers in a train to escape through the platform fence and take refuge on the platform while the movable door remains closed.

[0003] For example, the platform fence of Patent Document 1 has an emergency escape door (5; emergency door) between two fixed door pocket parts (4) arranged at a predetermined interval. The emergency escape door (5) is supported by a horizontal slide mechanism (9) and an oblique slide mechanism (8) in the fixed door pocket part (4). In an emergency, a passenger in a train offsets and moves the emergency escape door (5) supported by the oblique slide mechanism (8) from between the two fixed door pocket parts (4) to the platform side, and then slides the emergency escape door (5) horizontally along the outer surface of the platform side of the fixed door pocket part (4) to open the emergency exit.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the platform safety barrier described in Patent Document 1, in order to open the emergency exit, the emergency exit door (5) needs to protrude further towards the platform than it normally would, by at least the thickness of the emergency exit door (5) (see Figure 4 in Patent Document 1). The thickness of the emergency exit door (5) does not change whether it is a normal situation or an emergency when the emergency exit is fully opened. Therefore, the amount (length) that the emergency exit door (5) protrudes towards the platform was large. However, in an emergency, the platform may be crowded with passengers, or many passengers may be moving quickly on the platform. In particular, subway platforms have narrow spaces. Therefore, in order to open the emergency exit quickly without obstructing passengers on the platform, it is preferable to minimize the amount that the door protrudes towards the platform.

[0006] The problem that this invention aims to solve is to provide a technology for reducing the amount of protrusion toward the platform side in a platform safety barrier that opens an emergency exit by offsetting the emergency door toward the platform side. [Means for solving the problem]

[0007] The first invention for solving the above problem is a platform screen door comprising a movable door for opening and closing an entrance and a door pocket for supporting an emergency door, The emergency door comprises an emergency door panel and an emergency door upper cover provided above the emergency door panel. The door pocket section has a door pocket side cover section that forms the side facing the platform and a door pocket top cover section that forms the top surface, and supports the emergency door so that it can be offset between a normal position where the side facing the door pocket side cover section and the side facing the emergency door panel section form substantially the same extended plane and an offset position where the emergency door panel section is located closer to the platform than the door pocket side cover section, and supports the emergency door so that it can slide in the longitudinal direction of the platform at the offset position. The aforementioned emergency door is a platform safety barrier that further includes a vertical swinging mechanism that allows the upper cover portion of the emergency door to swing up and down between an interference position in which it interferes with the upper cover portion of the door pocket during the sliding movement of the emergency door, and a non-interference position in which it does not interfere.

[0008] In the platform safety barrier of the first invention, the upper cover portion of the emergency door can be moved by an up-and-down swinging mechanism from an interfering position to a non-interfering position where it does not interfere with the upper cover portion of the door pocket during sliding movement. Therefore, the amount by which the emergency door protrudes toward the platform in order to open the emergency exit can be reduced. Thus, the amount by which the emergency door protrudes toward the platform can be reduced.

[0009] The second invention is a platform safety barrier further comprising a locking part that locks the offset movement of the emergency door, which is located in the normal position, to the offset position, and releases the locking when the upper cover portion of the emergency door, which is located in the interference position, swings to the non-interference position.

[0010] According to the second invention, the lock is automatically released when the upper cover portion of the emergency door is swung to a non-interference position, making it easier to open the emergency exit.

[0011] The third invention is a platform safety barrier in which the vertical swinging mechanism has a rod portion that moves up and down in conjunction with the vertical swinging of the upper cover portion of the emergency door, and the locking portion releases the lock in conjunction with the rod portion.

[0012] Furthermore, the fourth invention is a platform fence in which the locking portion comprises a locking hole opened in the door pocket portion and a locking piece that is linked to the rod portion and disengages from the locking hole.

[0013] According to the third or fourth invention, a locking mechanism can be realized with a relatively simple structure.

[0014] The fifth invention is a platform fence in which the interference position is the position in which the upper cover portion of the emergency door is lowered, the non-interference position is the position in which the upper cover portion of the emergency door is raised, and the emergency door has a restraining portion that prevents the upper cover portion of the emergency door located in the non-interference position from descending to the interference position due to its own weight.

[0015] According to the fifth invention, the upper cover portion of the emergency door, once positioned in a non-interference position, can be retained in that non-interference position. Therefore, it is possible to prevent the upper cover portion of the emergency door from descending under its own weight and hitting the door pocket portion during the process of sliding the emergency door in the longitudinal direction of the platform at the offset position, thereby preventing obstruction of the sliding movement.

[0016] The sixth invention is a platform safety barrier in which the interference position is the position in which the upper cover portion of the emergency door is lowered, the non-interference position is the position in which the upper cover portion of the emergency door is raised, and the emergency door has an operating load reducing portion that reduces the load required to swing the upper cover portion of the emergency door located at the interference position to the non-interference position.

[0017] According to the sixth invention, it is possible to assist in raising the upper cover portion of the emergency door to a non-interference position.

[0018] The seventh invention is a platform safety barrier in which the emergency door has a guide rail fixed in the longitudinal direction along the longitudinal direction of the platform and a slider that moves along the guide rail, and the door pocket has a parallel link mechanism that supports the slider, and the parallel link mechanism supports the emergency door so that it can move in an offset and sliding manner.

[0019] Furthermore, the eighth invention is a platform safety barrier in which the parallel link mechanism comprises two non-linear links, one end of which is connected to the door pocket and the other end of which is connected to the slider, arranged in parallel along the direction of the sliding movement of the emergency door.

[0020] Furthermore, the ninth invention is a platform safety barrier in which the side cover portion of the door pocket has a notched relief portion that allows the non-linear link to be displaced inward from the door pocket portion when the parallel link mechanism is in operation.

[0021] According to the seventh to ninth inventions, the emergency door can be offset and slid with a relatively simple structure.

Brief Description of the Drawings

[0022] [Figure 1] An external view of the home fence with the emergency door in the fully closed state as seen from the home side. [Figure 2] An external view of the home fence with the emergency door in the fully closed state as seen from the track side. [Figure 3] A vertical cross-sectional view of the emergency door. [Figure 4] An explanatory diagram of the structure and operation of the locking part. [Figure 5] A perspective view of the connecting part between the emergency door and the first door pocket part. [Figure 6] A top view of the connecting part between the emergency door and the first door pocket part. [Figure 7] A state transition diagram for explaining the operation of the parallel link mechanism. [Figure 8] An external view of the home fence with the emergency door in the fully open state as seen from the home side. [[ID=三十二]]

Embodiments for Carrying Out the Invention

[0023] Hereinafter, embodiments of the home fence 2 to which the present invention is applied will be described. However, it is needless to say that the applicable forms of the present invention are not limited to the following embodiments. In each drawing, a right-handed orthogonal three-axis (X-axis, Y-axis, Z-axis) indicating a common direction is shown. The XY plane represents a plane parallel to the upper surface of the platform. The positive X-axis direction indicates the track side, and the negative X-axis direction indicates the home side. The positive Z-axis direction indicates upward.

[0024] FIG. 1 is an external view of the home fence 2 as seen from the home side, showing the normal state (fully closed state) in which the emergency door 50 is fully closed. FIG. 2 is an external view of the home fence 2 in FIG. 1 as seen from the track side.

[0025] The home fence 2 includes a movable door 4 (4a, 4b) for opening and closing the boarding and alighting opening, and a door pocket part 10 that supports the emergency door 50. The door pocket section 10 is erected and fixed at the track-side end of the station platform 3, and supports the movable doors 4 (4a, 4b) so that they can slide along the longitudinal direction (Y-axis direction) of the platform 3, and opens and closes the entrance / exit by extending / retracting them.

[0026] The door pocket section 10 includes a first door pocket section 11 that supports and moves the first movable door 4a, and a second door pocket section 12 that supports and moves the second movable door 4b. The first door pocket section 11 and the second door pocket section 12 are fixed to the platform 3 with a predetermined distance between them to serve as an emergency exit in an emergency. The emergency door 50 is supported by the first door pocket section 11 between the first door pocket section 11 and the second door pocket section 12.

[0027] The first movable door 4a and the second movable door 4b have a left-right inverted structure, and the second door pocket section 12 that supports the second movable door 4b basically has a left-right inverted structure compared to the first door pocket section 11, but does not have a structure related to supporting the emergency door 50.

[0028] The first door pocket section 11 has a door pocket side cover section 13 that forms the side facing the platform, and a door pocket top cover section 15 that forms the top surface.

[0029] The side cover portion 13 and the top cover portion 15 of the door pocket both cover the internal structure of the first door pocket portion 11 and form its external appearance. For example, they are made of metal plates or the like. The door pocket side cover section 13 basically forms a flat vertical surface and has a side facing the platform and a side facing the track. When viewed from the negative Y-axis direction, the upper cover portion 15 of the door pocket has a two-slope shape in which a sloping surface that slopes downward toward the platform and a sloping surface that slopes downward toward the track are connected.

[0030] The emergency door 50 is normally located between the first door pocket section 11 and the second door pocket section 12. Normally, the emergency door 50 closes the space between the first door pocket section 11 and the second door pocket section 12, but in an emergency, it is offset towards the platform (moved in the negative X-axis direction) and then slid towards the first door pocket section 11 (moved in the negative Y-axis direction) to open the emergency exit.

[0031] The emergency door 50 has an emergency door panel section 52 and an emergency door upper cover section 54.

[0032] The emergency door panel section 52 is the main shielding section that vertically blocks the emergency exit (the distance between the first door pocket section 11 and the second door pocket section 12). In the example shown in Figure 1, the emergency door panel section 52 has a central transparent plate and a frame that supports its outer periphery.

[0033] The emergency door upper cover section 54 is a movable cover provided above the emergency door panel section 52, and is designed to cover the area above the gap between the first door pocket section 11 and the second door pocket section 12 under normal circumstances. The emergency door upper cover section 54 is supported at its upper part by a vertical swing mechanism 56 so as to be able to swing up and down.

[0034] In the normal state when the emergency door 50 is fully closed, the platform side of the door pocket side cover portion 13 of the first door pocket section 11, the platform side of the emergency door panel portion 52 of the emergency door 50, and the platform side of the door pocket side cover portion 13 of the second door pocket section 12 form approximately the same extended plane. The platform-side surfaces of these three materials appear to be continuous with little to no difference in height.

[0035] Similarly, under normal conditions, the upper cover portion 15 of the first door pocket section 11, the upper cover portion 54 of the emergency door 50, and the upper cover portion 15 of the second door pocket section 12 appear to form two sloping surfaces with the same or approximately the same height H0, and approximately identical extension planes connected to each other, when viewed from the negative Y-axis direction.

[0036] In other words, under normal circumstances, the first door pocket section 11, the emergency door 50, and the second door pocket section 12 have an integrated, panel-like appearance.

[0037] Next, we will describe the details of the structure of platform screen door 2. Figure 3 is a cross-sectional view of the emergency door 50, showing the top and bottom. The vertical swing mechanism 56 can be a hinge structure in which a Y-axis swing shaft 56j fixed to the upper end of the emergency door panel 52 passes through a bearing portion 56u provided at the platform-side end of the platform-side inclined portion 54h of the emergency door upper cover portion 54. However, the vertical swing mechanism 56 is not limited to a hinge structure and may be implemented with other structures (for example, a link mechanism).

[0038] In normal operation, the emergency door upper cover section 54 is in the normal position shown by the solid line in Figure 3, with its top at a height H0 from the platform 3, and is positioned to cover the area above the first door pocket section 11 and the second door pocket section 12 (see Figure 2).

[0039] The upper cover portion 54 of the emergency door is held in its normal position by a cover lock 57, but in an emergency, the cover lock 57 is released, allowing it to swing up and down by the up and down swinging mechanism 56, and enabling it to transition to the emergency position.

[0040] The cover lock 57 is implemented, for example, by a bolt attached to the back surface of the track-side slope 54k of the upper cover portion 54 of the emergency door, and locks the upper cover portion 54 of the emergency door to the second door pocket portion 12 to prevent it from swinging upward (see Figure 2). The cover lock 57 may also be locked to the first door pocket portion 11 of the emergency door 50. Furthermore, the cover lock 57 may be implemented by means other than a bolt. For example, a swinging piece may be provided on the upper surface of the door pocket upper cover portion 15 of the first door pocket portion 11 or the second door pocket portion 12, and under normal circumstances, the swinging piece may rest on the upper cover portion 54 of the emergency door in its normal position, thereby preventing the upper cover portion 54 of the emergency door from swinging upward.

[0041] As shown in Figures 2 and 3, the platform fence 2 has a locking portion 20. The locking part 20 locks the emergency door 50 to the first door pocket section 11 and the second door pocket section 12 to prevent the emergency door 50 from opening under normal circumstances. In addition, the locking part 20 releases the lock when the upper cover section 54 of the emergency door swings upward during an emergency.

[0042] Figure 4 is an explanatory diagram of the structure and operation of the locking part 20. As shown in Figures 2 and 4, the locking portion 20 includes a rod portion 21, a connecting piece 24, a locking piece 26, and a locking hole 29.

[0043] As shown in Figure 2, the rod portion 21 is positioned vertically at the Y-axis end of the emergency door panel portion 52 on the track side. The rod portion 21 is guided and supported so that it can move up and down by being inserted vertically through the rod support piece 58 of the emergency door panel portion 52.

[0044] As shown in Figure 3, a connecting pin 22 is provided protruding from the tip of the rod portion 21. The connecting pin 22 is loosely fitted into an elongated hole in the X-axis direction of a connecting arm portion 59, which extends from near the bearing portion 56u of the upper cover portion 54 of the emergency door toward the X-axis plus direction (in the normal position).

[0045] As shown in Figures 3 and 4, the connecting piece 24 has an elongated hole 24n on its track-side surface that is long in the Y-axis direction.

[0046] The locking piece 26 has a pivoting shaft projection 26j that fits into a bearing hole provided on the track-side surface of the emergency door panel 52, and a connecting projection 26t that loosely fits into the elongated hole 24n of the connecting piece 24.

[0047] As shown in Figure 4, under normal circumstances, the rod portion 21 is in its lowest position. At this time, the pivoting end of the locking piece 26 protrudes outward from the edge of the emergency door panel portion 52 and fits into the locking holes 29 provided in the first door pocket portion 11 and the second door pocket portion 12. As a result, the emergency door 50 is locked in the first door pocket portion 11 and the second door pocket portion 12. This is the state shown on the left side of Figure 4.

[0048] In an emergency, when the emergency door 50 (described later) is opened, the upper cover portion 54 of the emergency door swings upward to assume the emergency position, and the rod portion 21 moves upward in conjunction with this swing. As a result of this movement, the swinging end of the locking piece 26 rises, and the locking piece 26 no longer protrudes outward from the edge of the emergency door panel portion 52 (to the left in Figure 4), and it disengages from the locking holes 29 provided in the first door pocket portion 11 and the second door pocket portion 12. As a result, the emergency door 50 is released from the locking of the first door pocket portion 11 and the second door pocket portion 12, entering an "unlocked state." This is the state shown on the right side of Figure 4.

[0049] As shown in Figure 3, a restraining portion 40 is provided at the lower part of the rod portion 21. The restraining portion 40 includes an upper flange portion 41, a coil spring 42, a spring receiving portion 43, and a lower flange portion 44.

[0050] The upper flange portion 41 is an enlarged diameter portion provided at the lower part of the rod portion 21, and the upper end of the coil spring 42 abuts against its lower surface.

[0051] Under normal circumstances, the coil spring 42 is held in a compressed state between the upper flange portion 41 and the spring receiving portion 43.

[0052] The spring receiving portion 43 is located below the upper flange portion 41 and protrudes from the track side of the emergency door panel portion 52, through which the rod portion 21 is inserted vertically. The lower end of the coil spring 42 abuts against the upper surface of the spring receiving portion 43.

[0053] The lower flange portion 44 is an enlarged diameter portion provided on the rod portion 21 located below the spring receiving portion 43, and its upper surface abuts against the lower surface of the spring receiving portion 43, thereby restricting the upward movement of the rod portion 21.

[0054] The rod portion 21 is constantly biased to move upward by the coil spring 42. This biasing force encourages the emergency door upper cover portion 54 to rise to the emergency position when the cover lock 57 is released. It assists the operating load that swings the emergency door upper cover portion 54 upward. Therefore, the restraining portion 40 also serves as an operating load reducing portion 49 that reduces the operating load required to swing the emergency door upper cover portion 54 upward.

[0055] Furthermore, this biasing force prevents the upper emergency door cover 54 from swinging downward and descending due to its own weight after it has reached the emergency position (see Figure 3), thereby holding the upper emergency door cover 54 in the emergency position.

[0056] Next, the connection structure between the emergency door 50 and the first door pocket section 11 will be described. Figure 5 is a perspective view of the connection between the emergency door 50 and the first door pocket section 11, with the emergency door 50 in a slightly raised position compared to its normal position. Figure 6 is a top view of the connection between the emergency door 50 and the first door pocket section 11, partially shown in perspective. Figures 5 and 6 show the normal position, i.e., the emergency exit when it is fully closed.

[0057] As shown in Figures 5 and 6, the emergency door 50 has a sliding mechanism 60 on the upper track-side portion of the emergency door panel 52. The sliding mechanism 60 is a mechanism that supports the emergency door 50 so that it can slide in the longitudinal direction of the platform (Y-axis direction), and is provided on the track-side portion of the emergency door panel 52. The sliding mechanism 60 is configured, for example, with a guide rail 61 fixed to the emergency door panel 52 in the Y-axis direction, and a slider 63 that moves linearly along the guide rail. Note that other mechanisms may be used as the sliding mechanism 60 as long as they are linear motion mechanisms.

[0058] The first door pocket section 11 has a parallel link mechanism 70. The parallel link mechanism 70 connects the slider 63 of the slide mechanism 60 to the first door pocket section 11 to support the emergency door 50 and changes the relative position of the slider 63 with respect to the first door pocket section 11.

[0059] The parallel link mechanism 70 has a first link 71 and a second link 72. The first link 71 and the second link 72 are non-linear links of the same shape, curved in the shape of the letter "L" when viewed from above. Both the first link 71 and the second link 72 are positioned along the XY plane with their bent portions facing the track, and one end is pivotally supported at the first door pocket portion 11 so as to be able to swing in the XY plane by a vertical axis, while the other end is supported at the upper surface of the slider 63 so as to be able to swing in the XY plane.

[0060] As shown in Figure 6, the pocket-side joint 73a of the first link 71 and the pocket-side joint 73b of the second link 72 are arranged in a straight line along the Y-axis when viewed from above. Similarly, the slider-side joint 74a of the first link 71 and the slider-side joint 74b of the second link 72 are arranged in a straight line along the Y-axis when viewed from above.

[0061] Next, we will explain how to open and operate emergency door 50. An operator attempting to open the emergency door 50 (a passenger disembarking from the train onto the platform in an emergency) first unlocks the cover lock 57 (see Figures 2 and 3). Then, the upward biasing force of the coil spring 42 causes the upper cover portion 54 of the emergency door to swing upward towards the emergency position (see Figure 3). The operator can also transition to the emergency position by grasping the upper cover portion 54 of the emergency door with their hand and lifting it (see Figure 3).

[0062] As the upper cover portion 54 of the emergency door swings upward, the rod portion 21 moves upward, and as the rod portion 21 moves upward, the locking piece 26 swings upward. As a result, the locking portion 20 changes from a locked state to an unlocked state (see Figures 4 and 5). In addition, the upward biasing force of the coil spring 42 prevents the upper cover portion 54 of the emergency door from swinging downward (descending) due to its own weight, and the upper cover portion 54 of the emergency door is held in the emergency position.

[0063] Next, the operator pushes emergency door 50 toward the platform. Figure 7 is a state transition diagram illustrating the operation of the parallel link mechanism 70. For ease of understanding, some elements, such as the emergency door upper cover 54 and the locking part 20, have been omitted from the illustration.

[0064] As shown in Figure 7(1), at the point when the operator begins to push the emergency door 50 toward the platform, the emergency door 50 (slider 63) is in its normal position. As shown in Figure 7(2), when the operator pushes the emergency door 50, the slider 63 is offset and moved toward the platform side from its normal position by the parallel link mechanism 70. At this time, the emergency door 50 moves in parallel with respect to the first door pocket section 11 due to the action of the parallel link mechanism 70.

[0065] As the operator continues to push the emergency door 50, as shown in Figure 7(3), the first link 71 and the second link 72 will abut against the platform-side side of the first door pocket section 11, preventing further pushing, and the emergency door 50 (slider 63) will reach the offset position.

[0066] The first door pocket section 11 has a relief section 17 at the corner on the platform side facing the emergency door 50 (see Figures 1, 6, and 7). The relief section 17 is a notch provided in the door pocket side cover section 13 along the Y-axis. By providing the relief section 17, when the parallel link mechanism 70 operates, a portion of the first link 71 and the second link 72 can move inward into the first door pocket section 11, allowing the emergency door 50 to swing and displace until it reaches the offset position.

[0067] Incidentally, the specifications of the parallel link mechanism 70 are set such that when the emergency door 50 is moved to the offset position, the slider 63 is close to the platform-side surface of the door pocket side cover portion 13 of the first door pocket portion 11.

[0068] Next, as shown in Figure 7(4), the operator slides the emergency door 50, which is located in the offset position, toward the side of the first door pocket section 11 (in the negative Y-axis direction).

[0069] Even when the emergency door 50 (slider 63) reaches the offset position, the upper cover portion 54 of the emergency door is in the emergency position. Since the upper cover portion 54 of the emergency door is at the same (or substantially the same) height as the cover portion 15 of the door pocket on the upper surface of the first door pocket portion 11 in the normal position, even if an attempt is made to open the emergency door 50 while it is in the normal position, the upper cover portion 54 of the emergency door interferes with the cover portion 15 of the door pocket on the upper surface and cannot be opened. Therefore, the position of the upper cover portion 54 of the emergency door during normal times can be said to be the "interference position" with respect to the cover portion 15 of the door pocket on the upper surface when the emergency door 50 is slid to open the emergency exit.

[0070] However, when the upper cover portion 54 of the emergency door is in the emergency position and the emergency door 50 is moved to the offset position on the home side by the parallel link mechanism 70, the upper cover portion 54 of the emergency door moves to a "non-interference position" that is raised above the interference position. Also, the emergency door panel portion 52 is offset to the home side and there is nothing that interferes with sliding the emergency door panel portion 52 on the minus Y-axis direction side. Therefore, the emergency door 50 can slide in the direction of the first door pocket portion 11 (minus Y-axis direction).

[0071] FIG. 8 is an external view of the home fence 2 with the emergency door 50 fully open as viewed from the home side. When the emergency door 50 is slid in the direction of the first door pocket portion 11 (minus Y-axis direction), the space between the first door pocket portion 11 and the second door pocket portion 12 is opened to form an emergency exit.

[0072] In the home fence of Patent Document 1, the emergency escape door had to be projected to the home side by a thickness equal to or greater than that of the door pocket portion in order to open the emergency exit (see FIG. 4 of Patent Document 1). In the example of FIG. 8, the projection amount for projecting the emergency escape door to the home side was D0 or more. However, in the home fence 2 of the present embodiment, the emergency exit can be opened with a projection amount ΔD (<D0) that is much smaller than the thickness D0.

[0073] As described above, with platform screen door 2, the upper cover portion 54 of the emergency door can be moved (swinged) from an interfering position to a non-interfering position to a non-interfering position with respect to the upper cover portion 15 of the door pocket. Therefore, in platform screen door 2, which opens the emergency exit by offsetting the emergency door 50 toward the platform, the amount of protrusion of the emergency door 50 toward the platform when the emergency exit is opened can be reduced.

[0074] [Variation] The applicable embodiments of the present invention are not limited to those described above, and components can be added, omitted, or modified as appropriate.

[0075] For example, a single platform safety barrier 2 may have a structure in which the second door pocket section 12 and the second movable door 4b are omitted.

[0076] For example, the first link 71 and the second link 72 are exemplified as non-linear links with an L-shape when viewed from above, but the design is not limited to this. For example, they may be curved shapes rather than L-shaped ones.

[0077] Furthermore, the mechanism for moving the emergency door upper cover portion 54 from an interfering position to a non-interfering position may be implemented by other mechanisms. For example, a link mechanism may be used to move the emergency door upper cover portion 54 to a position above the door pocket side cover portion 13. Alternatively, for example, a gas spring mechanism may be used to support the emergency door upper cover portion 54, and when opening the emergency door 50, the gas spring mechanism may be used to raise the emergency door upper cover portion 54.

[0078] Furthermore, although the above embodiment illustrates a configuration in which the slide mechanism 60 is provided on the upper part of the emergency door panel 52, it may also be provided on the lower part of the emergency door panel 52. Alternatively, the slide mechanism 60 and the parallel link mechanism 70 may be provided in two sets, one on the upper part and one on the lower part. [Explanation of Symbols]

[0079] 2… Home plate fence 4…Movable door 10... Door pocket section 11...First door pocket section 13... Side cover section of the door pocket 15... Upper cover section of the door pocket 17...Escape Club 20... Locking part 21... Rod section 26… Locking piece 29… Locking hole 40…Deterrent 42… Coil spring 49...Operating load reduction section 50…Emergency door 52…Emergency door panel section 54… Upper cover section of emergency door 56…Up-and-down rocking mechanism 57... Cover Lock 60...Slide mechanism 61… Guide rail 63...Slider 70…Parallel link mechanism 71…First Link 72…Second Link

Claims

1. A platform screen door comprising a movable door for opening and closing the entrance and an emergency door, and a door pocket section that supports the emergency door, The aforementioned emergency door is, Emergency door panel section, An emergency door upper cover section is provided above the aforementioned emergency door panel section, It has, The aforementioned door pocket section is The side cover portion of the door pocket that forms the side facing the platform, The upper surface consists of the door pocket upper cover section, The emergency door is supported so as to be offset movable between a normal position in which the platform-side side of the door pocket side cover and the platform-side side of the emergency door panel form substantially the same extended plane, and an offset position in which the emergency door panel is located closer to the platform than the door pocket side cover, and the emergency door is supported so as to be slidable in the longitudinal direction of the platform at the offset position. The aforementioned emergency door further, A vertical swinging mechanism that allows the upper cover portion of the emergency door to swing up and down between an interference position in which it interferes with the upper cover portion of the door pocket during the sliding movement of the emergency door and a non-interference position in which it does not interfere. Having, Home plate fence.

2. A locking mechanism that locks the offset movement of the emergency door from its normal position to the offset position, and releases the locking when the upper cover portion of the emergency door, which is located in the interference position, swings to the non-interference position. The platform fence according to claim 1, further comprising:

3. The aforementioned vertical swinging mechanism has a rod portion that moves up and down in conjunction with the vertical swinging of the upper cover portion of the emergency door, The locking part is linked to the rod part to release the locking. The platform safety barrier according to claim 2.

4. The aforementioned locking portion is The locking hole opened in the aforementioned door pocket section, A locking piece that is connected to the rod portion and disengages from the locking hole, Having, The platform safety barrier according to claim 3.

5. The aforementioned interference position is the position where the upper cover portion of the emergency door has been lowered. The non-interference position is the position where the upper cover portion of the emergency door is raised. The emergency door has a restraining part that prevents the upper cover portion of the emergency door, which is located in the non-interference position, from descending to the interference position due to its own weight. A platform safety barrier according to any one of claims 1 to 4.

6. The interference position is the position where the upper cover portion of the emergency door has been lowered. The non-interference position is the position where the upper cover portion of the emergency door is raised. The emergency door has an operating load reduction section that reduces the load required to swing the upper cover portion of the emergency door, which is located in the interference position, to the non-interference position. A platform safety barrier according to any one of claims 1 to 4.

7. The aforementioned emergency door is, A guide rail fixed along the longitudinal direction of the platform, A slider that moves along the aforementioned guide rail, It has, The door pocket section has a parallel link mechanism that supports the slider, and the emergency door is supported by the parallel link mechanism so that it can be offset and slid. A platform safety barrier according to any one of claims 1 to 4.

8. The parallel link mechanism comprises two non-linear links, one end of which is connected to the door pocket and the other end of which is connected to the slider, arranged in parallel along the direction of the sliding movement of the emergency door. The platform fence according to claim 7.

9. The door pocket side cover portion has a notched relief portion that allows the non-linear link to be displaced inward in the door pocket portion when the parallel link mechanism is in operation. The platform safety barrier according to claim 8.

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