JP2017087907A - Platform door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stable platform door device which has high shielding performance for internal movable constituents.SOLUTION: A platform door device comprises a pair of platform door units, each of the pair of platform door units comprises: a slide door which can be reciprocated between an open position of opening an entrance passage and a closed position of closing the entrance passage; and a door pocket which has a door support device for movably supporting the slide door and stores at least a part of the slide door. The door pocket comprises a stationery door pocket part which is immovable with respect to a platform, and a movable door pocket part which is rotatable around a pivot vertically extending when the slide door is positioned at the closed position. The movable door pocket part of the door pocket of at least one platform door unit of the pair of the platform door units has a telescopic part which so makes a rotation axis from the pivot as to be variable.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a platform door device installed on a platform of a station such as a railway.

  In order to prevent a person from falling from the platform of the station to the track side, a platform door device is installed along the edge of the platform. Such a platform door device is an indispensable component not only for railways but also for example in new traffic systems that perform automatic driving. The installation of home door devices has continued to expand, and various home doors have been developed so far.

  The platform door device forms an entrance / exit passage that faces an entrance / exit of a vehicle such as a railway, and the entrance / exit passage is typically opened and closed by a sliding door. In addition, the platform door device is an entry / exit passage, assuming an emergency such as when the vehicle cannot be moved with the vehicle entrance / exit and the platform door position completely displaced. It is known that another emergency passage can be formed.

  For example, a home door device described in Patent Document 1 is arranged between a pair of sliding door panels, a pair of support portions that movably support the door panel, a pair of support portions, and a hinge on one of the support portions. And a single-opening emergency escape door portion connected through the two. When the sliding door panel opens the entrance / exit passage, the door bottom side enters the emergency escape door portion.

JP2015-63300A

  Since the inside of the emergency escape door part of patent document 1 is a movement path | route of a slide-type door panel, it has the upper cover part which covers the movement path | route from the top for safety. However, it seems that there is a gap that is not covered by the upper cover, particularly on the tip side of the emergency escape door on the side opposite to the hinge. Such a gap is necessary for a pivoting door having a certain thickness because there is usually a difference in the rotation radius between the front end position on the front side and the front end position on the back side. In the case of a platform door device, it can be an approach path for a passenger's finger or the like, so it is desirable to make it as small as possible.

  In patent document 1, it is also proposed to make the emergency escape door part a double-spread type. However, in that case, there is a concern that the difference in the radius of rotation becomes larger than that in the case of the single-open type, and therefore the gap becomes larger.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a safe platform door device that is highly shielded against internal movable components.

  In order to achieve the above-mentioned object, according to the present invention, an openable / closable entrance / exit passage is provided in cooperation with a similar platform door device disposed along and adjacent to the edge of the platform. A platform door device to be formed, the platform door device comprising a pair of platform door units, each of the pair of platform door units being in an open position for opening the entrance / exit passage and a closed position for closing the entrance / exit passage A sliding door that can reciprocate between the sliding door and a door support device that movably supports the sliding door, and a door pocket that at least partially stores the sliding door. A stationary door pocket that is stationary, and a movable door pocket that is pivotable about a pivot extending in the vertical direction when the sliding door is in the closed position. Movable door pocket of the door pocket of at least one of the home door unit of the bets is the home door device is provided with a stretchable portion to the turning radius from the pivot axis to the variable.

  In the present invention, the door pocket of one home door unit of the pair of home door units includes a fixed door bag portion and a movable door bag portion, whereas the door bag of the other home door unit includes a fixed door bag portion but is movable. The door pocket may not be provided.

  In this invention, a fixed door pocket part may have a part of a door support apparatus, and a movable door pocket part may also have a part of a door support apparatus.

  In the present invention, when the slide door of one platform door unit is in the open position, the door-side end of the slide door may reach the fixed door pocket of the other platform door unit.

  According to the present invention, it is possible to extend the expansion / contraction part normally so as to cover the pair of movable door pockets without any gaps. Therefore, it is possible to shield against a movable component such as a slide door that moves inside. It is possible to provide a home door device having a high movable door pocket. Further, when it is necessary to rotate and open the movable door pocket portion in an emergency or the like, it is possible to avoid the interference of the distal end portion of the movable door pocket portion by retracting the extendable portion to create a gap.

  Furthermore, the tolerance of the installation position in the direction parallel to the track at the time of installation work can be set large due to the effect of the telescopic portion.

It is a front view of a platform door device by an embodiment of the present invention, and is a front view of a platform door device in the state where a boarding / alighting passage was closed. It is a front view of the said platform door apparatus, and is a front view of the platform door apparatus of the state which open | released the entrance / exit passage. It is a top view of the said platform door apparatus, and is a top view of the platform door apparatus in a closed position where a slide door closes a boarding / alighting passage. FIG. 5 is a perspective view illustrating only one of a pair of home door units included in the home door device. FIG. 5 is a perspective view of the home door unit showing a state similar to FIG. 4, but showing a state in which the movable door pocket portion is opened. It is a front view of the home door unit which has a sliding door in an open position. It is a perspective view of a sliding door drive device. It is a perspective view of the lower guide member of a door support device. It is a perspective view of a 1st movable door pocket part. It is a perspective view which shows the structure inside a 2nd movable door pocket part. It is a front view of the platform door apparatus by another embodiment of the present invention.

  Hereinafter, a platform door device according to an embodiment of the present invention will be described with reference to the accompanying drawings. In addition, although the platform door apparatus by this embodiment is demonstrated as what is installed in the platform of a railway station, a platform door apparatus is installed and used for platforms, such as traffic systems other than a railway, for example, a monorail system. It will be understood that this is also possible.

  1 and 2 respectively show a state in which the platform door device 1 according to the present embodiment is disposed adjacent to a similar platform door device 1 ′ along the longitudinal edge of the platform 2 from the platform side. FIG. In the present embodiment, an entrance / exit passage 5 that can be opened and closed is formed between the two platform door devices 1, 1 ′ so as to face the entrance / exit 6 of the railway vehicle. The getting-on / off passage 5 is closed in FIG. 1 and opened in FIG. FIG. 3 is a plan view of one platform door device 1 in which the slide door 10 of the platform door device 1 extends to a closed position where the entrance / exit passage is closed. In this specification, in order to simplify the expression, the extending direction of the track (not shown), that is, the extending direction of the longitudinal edge of the platform 2 is the X direction, the up and down direction is the Y direction, and the X direction. The direction orthogonal to the Y direction may be referred to as the Z direction. In the Z direction, the side closer to the track is called the track side or rear side, and the side far from the track is called the home side or front side.

  One platform door device 1 of this embodiment includes a pair of platform door units 3 and a pair of legs 4 that respectively support the pair of platform door units 3 on the platform 2. Each of the pair of home door units 3 includes a slide door 10 configured to reciprocate in a direction substantially parallel to a track (not shown), that is, the X direction, and supports the slide door 10 so as to be movable. And a sliding door driving device 20 (not shown in FIGS. 1 to 3) disposed inside the door pocket 30.

  In this embodiment, the leg part 4 is formed in a substantially gate shape, and fixes the fixed door pocket part 40 of the door pocket 30 of the home door unit 3 to the upper surface thereof. Since the home door unit 3 is supported by the legs 4, a gap is formed between the upper surface of the platform 2 and the slide door 10 or the door pocket 30. In addition, the embodiment of the platform door apparatus which does not comprise the leg part 4 is also possible.

  The pair of symmetrically arranged home door units 3 in the present embodiment have the same configuration except that they have a difference in the configuration of the movable door pocket portions 100 and 200 of the door pocket 30 as their constituent elements, as will be described later. It is what you have. For this reason, in this specification, the same reference numerals are assigned to the pair of home door units 3 and the components thereof, except for the movable door pocket portions 100 and 200.

  The sliding door 10 of the home door apparatus 1 opens and closes the entrance / exit passage 5 in cooperation with the sliding door 10 of the home door apparatus 1 ′ arranged adjacent thereto. Therefore, the slide door 10 is configured to reciprocate between a closed position (FIG. 1) that closes the entrance / exit passage 5 and an open position (FIG. 2) that opens it. When the sliding door 10 is in the closed position, the sliding door 10 comes into contact with the door tip portion of the sliding door 10 of the home door apparatus 1 ′, the door tip portion of which is adjacently disposed. Most of the slide door 10 is stored in the door pocket 30 except for a part on the door tip side in the open position, and in this embodiment, the base of the door end is located in the door pocket 30 of the other home door unit 3. To reach. Due to such a configuration, a large movement stroke of the slide door 10 is obtained in this embodiment. In the present embodiment, the entrance / exit passage 5 having a width of about 2.8 meters is created by the stroke of the slide door 10 set to be large. This width is a relatively large value that is about twice or more that of a typical commuter train entrance and exit, which provides a relatively large tolerance for deviations in the stopping position of the train.

  4 and 5 are perspective views illustrating only one of the pair of home door units 3 included in one platform door device 1. In these drawings, the sliding door 10 is in a closed position, and in FIG. 4, a movable door pocket portion 200 described later is closed, whereas in FIG. 5, it is opened. The slide door 10 includes a lower base frame 11 and an upper upper frame 12 made of a cylindrical pipe material. In this embodiment, the base frame 11 is formed of a square pipe member having a substantially rectangular cross section made of an extruded material made of aluminum. A space is formed between the upper frame 12 and the base frame 11. In the present embodiment, the upper frame 12 is fixed to the base frame 11 with its front end bent downward and is not fixed to the base frame 11. Therefore, the upper frame 12 is supported in a main body portion 41 described later of the fixed door pocket portion 40 of the door pocket 30. Further, a rubber cushioning member 13 is attached to the distal end portion of the base frame 11 in order to mitigate the impact of the collision with the distal end portion of the slide door 10 of the adjacent home door apparatus 1 ′. ing.

  The pair of slide doors 10 included in one home door apparatus 1 are shifted in the Z direction on the movement path so that they can pass in a sliding manner when they reach the open position from the closed position. In FIG. 3, the slide door 10 shown on the right side of the figure is arranged on the rear side, that is, the track side, and the slide door 10 shown on the left side of the figure is arranged on the front side, that is, the home side.

  The door pocket 30 includes a fixed door pocket portion 40 fixed to the leg portion 4 and movable door pocket portions 100 and 200 connected to the fixed door pocket portion 40 by a hinge 31 having a pivot extending in the vertical direction. The fixed door pocket portion 40 has an L-shape as a whole, and includes a main body portion 41 constituting an L-shaped vertical portion and a horizontal extension portion 44 constituting an L-shaped horizontal portion. The main body 41 is formed as a vertically long, substantially rectangular parallelepiped casing, and a member 31a constituting the hinge 31 is fixed to a front corner of the main body 41. On both side surfaces of the main body 41, two vertically long rectangular holes 42 that allow the base frame 11 of the slide door 10 to pass and two round holes 43 that allow the upper frame 12 to pass are formed. ing. The horizontal extension 44 is formed as a horizontally long casing in which a groove for passing the base frame 11 of the slide door 10 is formed. Further, the main body portion 41 and the horizontal extension portion 44 have a common base plate 45 (see FIG. 6) extending to their bottom portions, and the base plate 45 is fixed to the upper surface of the leg portion 4.

  The door pocket 30 includes a door support device 50 that supports the slide door 10 so as to be movable. FIG. 6 is a front view of the home door unit 3 schematically showing the arrangement of the door support device 50 that supports the slide door 10 (in this drawing, in the open position). The door support device 50 is in contact with the lower surface of the base frame 11 of the slide door 10 and movably supports the first roller 51 and the second roller 52, and is in contact with the upper surface of the base frame 11 and presses it movably. The third roller 53, the two lower guide members 54 that restrict the position in the left-right direction of the cross section of the base frame 11, that is, the Z direction, and the upper guide member 55 that regulates the position of the upper frame 12 in the vertical direction and the Z direction. It comprises. The rotation shafts of the first to third rollers extend in the Z direction.

  The 1st roller 51 is provided in the horizontal extension part 44 of the fixed door pocket part 40, and is rotatably supported by the bracket 26 of the slide door drive device 20 (FIG. 7). The 2nd roller 52 is provided in the movable door pocket parts 100 and 200, and it is rotatably supported by the support metal fitting 57 fixed to the baseplates 101 and 201 of a movable door pocket part (FIG. 10). The third roller 53 is provided in the fixed door pocket portion 40 between the first roller 51 and the second roller 52, and is provided by a substantially U-shaped support fitting (not shown) standing from the base plate 45. It is supported rotatably. By these first to third rollers, the slide door 10 is supported between its own weight and a rotational moment based thereon, and is movable between a closed position and an open position. In particular, in the present embodiment, since the second roller 52 of the door support device 50 is disposed in the movable door pocket portions 100 and 200, a sufficient interval between the second roller 52 and the third roller is ensured. The rotational moment is effectively supported, which contributes to realizing a large stroke of the sliding door 10. When the sliding door 10 in this embodiment is in the open position, the end on the door bottom side penetrates the movable door pocket portion 100 of the other home door unit 3 (not shown in FIG. 6) forming a pair. In addition, the stroke is large enough to reach the main body portion 41 of the fixed door pocket portion 40.

  As shown in FIG. 8 which is a single perspective view of the lower guide member 54, the lower guide member 54 is formed in a substantially U-shape having two arm portions 54a extending upwardly facing each other. The base frame 11 of the sliding door 10 moves through the space in the center of the U-shape, and the position in the Z direction is regulated by the arm portions 54a on both sides. A liner 56 made of a synthetic resin material having low friction and excellent wear resistance is attached to the inner surface of the arm portion 54a. One of the two guide members 54 is fixed on the base plate 45 in the horizontal extension portion 44 of the fixed door bag portion 40 closer to the door tip side than the first roller 51. The other guide member 54 is fixed on the base plate 45 in the main body 41 of the fixed door pocket 40 on the door bottom side with respect to the third roller 53.

  The upper guide member 55 has four wall portions (not shown) that surround and support the upper frame 12 of the slide door 10 that moves at the upper end portion of the main body portion 41 of the fixed door pocket portion 40. A liner (not shown) made of the same material as the liner 56 is attached to the inner surfaces of these wall portions.

  The slide door drive device 20 is disposed in the horizontal extension 44 of the fixed door pocket 40, and as shown in FIG. 7, an electric drive motor 21 and a speed reducer (see FIG. A drive pulley 22 that is a toothed pulley connected to the speed reducer, two idle pulleys 23 and 24 arranged with the drive pulley 22 in between, and a bracket 26 that supports these components, And a toothed belt 25 wound around pulleys. The rotation shafts of the pulleys extend in the Z direction as with the first to third rollers.

  The bracket 26 has a vertical portion 26 a, and a lower portion of the vertical portion 26 a is bent into an L shape and is fixed on a base plate 45 in the horizontal extension portion 44. The drive motor 21 and the speed reducer are supported by the vertical part 26a of the bracket 26 on the back side of the figure, and the two idle pulleys 23 and 24 are rotatably supported by the vertical part 26a on the front side of the figure. A drive shaft is coupled to and supported by the speed reducer. The teeth of the toothed belt 25 are not illustrated in FIG. 7, but actually extend upward from the upper surface of the toothed belt 25. Further, in the present embodiment, the idle pulley 24 on the left side of the figure is attached to a rotation shaft common to the first roller 51, and is sandwiched between the proximal end portion 51a and the distal end portion 51b of the first roller 51. It is.

  The base frame 11 of this embodiment formed of an extruded member has a recess (not shown) extending in the longitudinal direction on the lower surface thereof, and the toothed belt 25 is accommodated in the recess and the door end portion. To Tojiri. The distal end portion and the proximal end portion of the toothed belt 25 are fixed to the door tip portion and the door bottom portion of the base frame 11, respectively. In order to receive power from the drive pulley 22, the toothed belt 25 protrudes downward from the recess (not shown) of the base frame 11 at a position facing the drive pulley 22 and is driven so as to exhibit an inverted Ω shape. It is wound around a pulley 22 and two idle pulleys 23 and 24. Since the toothed belt 25 is fixed to the slide door 10 and the position of the drive pulley 22 does not move, when the drive pulley 22 is rotated by the power of the drive motor 21, the slide supported movably by the door support device 50. The door 10 moves in the X direction.

  Since the pair of movable door pocket portions 100 and 200 of the pair of home door units 3 are connected to the front corners of the main body portion 41 of the fixed door pocket portion 40 by hinges 31, respectively, if the slide door 10 is in the closed position. It is possible to turn to the front side (home side), and in this embodiment, as shown in FIG. The left and right movable door pocket portions 100 and 200 are generally symmetrical but have the following differences. In the present specification, the one on the right side in FIG. 1 of the pair of movable door pockets of one home door device 1 will be referred to as the first movable door pocket 100 and the left one will be referred to as the second movable door pocket 200.

  First, the first movable door pocket portion 100 having a simpler structure will be described. In addition, the X direction and Z direction in description of the 1st and 2nd movable door pocket part have shown the direction when a movable door pocket part is closed and arrange | positioned in parallel with a track | orbit.

  As shown in FIG. 9, the first movable door pocket portion 100 is vertically moved so as to connect the bottom plate 101, the upper plate 102, and the bottom plate 101 and the upper plate 102 on the side close to the main body portion 41 of the fixed door pocket portion 40. A frame 105 including a side plate 103 extending in the direction and a partition plate 104 extending vertically in a substantially central portion of the thickness in the Z direction and coupled to the bottom plate 101 and the upper plate 102 and also coupled to the side plate 103. Furthermore, the first movable door pocket portion 100 has a lower cover 106 that covers approximately half of the lower side thereof, and an upper cover 107 that covers the upper side of the upper plate 102. A member 31b constituting the hinge 31 is fixed to a corner on the front side of the frame 105. Further, in order to cover a gap generated between the first movable door pocket portion 100 and the main body portion 41 of the fixed door pocket portion 40 and substantially equivalent to the thickness of the hinge 31, an eave-like protruding portion 103 a is formed on the upper end portion of the side plate 103. Is provided. Each of the upper cover 107 and the lower cover 106 has a slightly curved upper surface. In addition, a large square hole 104a penetrating in the Z direction is formed in the partition plate 104 between the upper cover 107 and the lower cover 106 for weight reduction and the like.

  The height of the first movable door pocket portion 100 is substantially equal to the height of the upper frame 12 of the slide door 10, and thus is set slightly lower than the main body portion 41 of the fixed door pocket portion 40. Further, the thickness is equal to the main body portion 41 of the fixed door pocket portion 40. Although not shown in FIG. 9, the second roller 52 of the door support device 50 is attached to the front side of the bottom plate 101 of the frame.

  In order to allow the upper frame 12 of the sliding door 10 to pass through, the side surface on the door bottom side of the upper cover 107 of the first movable door pocket portion is open, and also in the region above the upper plate 102 of the side plate 103 of the frame. Although not shown in FIG. 9, two round holes are formed in the same manner as the main body portion 41 of the fixed door pocket portion 40. Similarly, a square hole 106a partitioned by a partition plate 104 is opened on the side surface on the door bottom side of the lower cover 106 of the first movable door pocket portion so that the base frame 11 of the slide door 10 can pass through. Although not shown in FIG. 9, two square holes are formed in the lower region of the side plate 103 of the frame as well as the main body portion 41 of the fixed door pocket portion 40.

  The external appearance of the second movable door pocket portion 200 is shown in FIGS. 4 and 5, and the internal structure thereof is shown in FIG. Similar to the first movable door pocket portion 100, the second movable door pocket portion 200 includes a bottom plate 201, an upper plate 202, a side plate 203 extending vertically to connect the bottom plate 201 and the upper plate 202, and a thickness direction. A frame 205 including a partition plate 204 extending substantially vertically at the center and coupled to the bottom plate 201 and the upper plate 202 and also coupled to the side plate 203, a lower cover 206, and an upper cover 207 is provided. A member 31b constituting the hinge 31 is fixed to a corner on the front side of the frame 205. Further, in order to cover a gap generated between the second movable door pocket portion 200 and the main body portion 41 of the fixed door pocket portion 40 and substantially equivalent to the thickness of the hinge 31, an eave-like protruding portion 203 a is formed on the upper end portion of the side plate 203. Is provided.

  In the region above the upper plate 202 of the side plate 203 of the frame of the second movable door pocket portion 200, two rounds are provided in the same manner as the main body portion 41 of the fixed door pocket portion 40 so that the upper frame 12 of the slide door 10 can pass. A hole 208 is drilled. Similarly, in the area below the side plate 203 of the frame of the second movable door pocket portion 200, two square holes are provided in the same manner as the main body portion 41 of the fixed door pocket portion 40 so that the base frame 11 of the slide door 10 can pass. 209 is opened.

  The second movable door pocket part 200 is different from the first movable door pocket part 100 in that it further includes an extendable part 210. The expansion / contraction part 210 makes the width in the X direction of the second movable door pocket part 200, and hence the turning radius from the hinge 31, variable, and takes the forward position where the width is maximum and the reverse position where the width is minimum. Can do.

  The elastic part 210 includes an upper elastic part 211, a front lower elastic part 214, a rear lower elastic part 215, and a connecting part 212 that connects the upper elastic part 211 and the rear lower elastic part 215. The upper stretchable portion 211 has a cross-sectional shape that is substantially similar to the cross-sectional shape of the upper cover 207 so that it can be inserted into a space defined by the upper cover 207 and the upper plate 202 of the frame. The front lower elastic part 214 and the rear lower elastic part 215 are formed so that they can be inserted into a space defined by the lower cover 206 and the bottom plate 201. The upper telescopic part 211 has a belt-like upper slider part 211a extending in the X direction, and the upper slider part 211a is inserted into a slit provided in the two guide plates 216 provided in the upper plate 202 of the frame. Then, the movement in the X direction is guided.

  The front lower elastic part 214 and the rear lower elastic part 215 are formed symmetrically about the partition plate 204, and are coupled by a coupling part (not shown). The front lower expansion / contraction part 214 has a front end part 214a that defines a vertically long rectangular hole through which the base frame 11 of the slide door 10 can penetrate, and a substantially U-shape extending from the front end part 214a to the side plate 203 side of the frame. And a lower slider portion 214b. The position of the lower slider part 214b of the front lower elastic part 214 is regulated by the partition plate 204 and the four guide blocks 217 provided thereon, and is guided to move in the X direction. The rear lower elastic part 215 is also formed in the same manner as the front lower elastic part 214. The upper stretchable part 211, the front lower stretchable part 214, and the rear lower stretchable part 215 are integrated and supported so as to be movable in the X direction. It is possible to move in the X direction. In FIG. 4 and FIG. 10 and the like, the expansion / contraction part is disposed at its forward position.

  The expansion / contraction part 210 is normally arranged at the forward movement position, but when the closed first and second movable door pocket parts 100 and 200 are opened, it is only necessary to move to the backward movement position. Thereby, it becomes possible to avoid the interference of the front-end | tip part of a 1st and 2nd movable door pocket part, and to rotate those door pocket parts. Further, when the first and second movable door pocket portions 100 and 200 are closed, the first and second movable door pocket portions 100 and 200 are closed in a state where the expansion and contraction portion 210 is in the retracted position, and then the expansion and contraction portion 210 is moved to the forward movement position. Move it. Thereby, it becomes possible to fill the gap between the first and second movable door pockets.

  The sliding door 10 also has a movement path in the first and second movable door pockets 100 and 200, and in particular, the upper frame 12 passes just below the upper covers 107 and 207 of the movable door pockets. For this reason, if there is a gap for the passenger's finger to enter between the two upper covers 107, 207, it is very dangerous. However, according to this embodiment, the expansion / contraction part 210 of the second movable door pocket part 200 is normally used. Due to the effect, such a gap into which a finger or the like enters does not occur. On the other hand, in an emergency or the like, the first and second movable door pocket portions 100 and 200 can be rotated while avoiding mutual interference by retracting the extendable portion 210 to provide a gap. .

  In addition, the telescopic portion 210 of the second movable door pocket portion 200 makes it possible to set a large tolerance for the installation position in the X direction particularly during installation work. Therefore, according to the platform door device 1 of this embodiment, it is expected that the installation work becomes easy and the construction time is shortened.

  In the above-described embodiment, one second movable door pocket portion 200 of the pair of movable door pocket portions has the stretchable portion 210. However, an embodiment in which both of the pair of movable door pocket portions have the stretchable portion 210 is also possible. It is.

  In the above-described embodiment, each of the door pockets 30 of the pair of home door units 3 constituting one platform door device 1 has the movable door pocket portion, and as a result, the pair of movable door pocket portions are opened and closed in a double door manner. On the other hand, as shown in FIG. 11, the door pocket 30 of one home door unit 3 of the pair of home door units 3 includes a movable door pocket portion 300 including an extendable portion 310 and a fixed door pocket portion 40. However, an embodiment of the home door device 500 in which the door pocket 30 ′ of the other home door unit 3 ′ has only the fixed door pocket portion 40 without the movable door pocket portion is also possible. In this case, the movable door pocket portion 300 is connected to one fixed door pocket portion 40 via the hinge 31 and pivots in a single opening manner to open and close. Further, the rollers and guide members of the door support device 50 are disposed in the fixed door pocket portion 40 and the movable door pocket portion 300 as in the above-described embodiment, but in this embodiment, in the single movable door pocket portion 300. Two second rollers 52 are provided.

DESCRIPTION OF SYMBOLS 1 Home door apparatus 3 Home door unit 4 Leg part 5 Entrance / exit passage 6 Entrance / exit 10 Slide door 11 Base frame 12 Upper frame 20 Slide door drive device 30 Door bag 31 Hinge 40 Fixed door bag part 41 Main-body part 44 Horizontal extension part 50 Support apparatus 52 Second roller 100 Movable door pocket part 200 Movable door pocket part 210 Extendable part

Claims (4)

A platform door device that is disposed along an edge of the platform and cooperates with a similar platform door device disposed adjacently to form an openable / closable entrance passage,
The platform door device includes a pair of platform door units,
Each of the pair of home door units is
A sliding door that can reciprocate between an open position that opens the boarding passage and a closed position that closes the boarding passage;
A door support device that movably supports the sliding door, and a door pocket that at least partially stores the sliding door;
The door pocket includes a fixed door pocket portion that is immovable with respect to the platform, and a movable door pocket portion that is rotatable about a pivot extending in the vertical direction when the slide door is in the closed position.
The home door device characterized in that the movable door pocket portion of the door pocket of at least one of the pair of home door units has an extendable portion that makes a turning radius from the pivot axis variable. .   While the door of one home door unit of the pair of home door units includes the fixed door portion and the movable door portion, the door of the other home door unit includes the fixed door portion. The platform door device according to claim 1 which does not comprise a movable door pocket part.   The home door apparatus according to claim 1 or 2, wherein the fixed door pocket portion includes a portion of the door support device, and the movable door pocket portion also includes a portion of the door support device.   When the sliding door of one of the platform door units is in the open position, an end of the sliding door on the door bottom side reaches the fixed door pocket of the other platform door unit. The platform door device according to any one of the above.

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