JP2016164048A - Platform door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a platform door which can efficiently transmit driving force from a driving source to a door body.SOLUTION: Disclosed is a platform door which includes: a door pocket body which is installed on a platform; a first door which is held in the door pocket body; a second door which is held in the door pocket body and is disposed between the first door and a track space in which a train runs; and a driving mechanism which drives the first door and the second door. The driving mechanism includes: a driving source which generates driving force; and a transmission mechanism which transmits the driving force to the first door and the second door. The transmission mechanism is disposed between the first door and the second door which are disposed in the door pocket body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a platform door that partitions a track space through which a train passes from a platform space on a platform.

  Platform doors are used at various stations. The platform door isolates passengers on the platform from the track space through which the train passes. Patent Documents 1 and 2 propose various drive mechanisms for driving the platform door.

JP 2014-4959 A JP 2014-19314 A

  Since platform doors are used daily, the time given for maintenance is very short. Therefore, various facilities (for example, pulleys and belts) for driving the platform door are arranged at positions as far as possible from the track space in the door pocket housing the door body. As a result, the worker can smoothly perform maintenance work on the platform.

  The platform door may have two door bodies that are displaced in opposite directions. In order to reduce the size of the door bag body that accommodates the two door bodies, one of the two door bodies may be disposed between the other door body and the track space in the door bag body. Under the arrangement of the driving mechanism and the arrangement of the door body described above, the distance between the driving mechanism and the door body arranged near the track space becomes very long. The inventors have found a problem that a long distance between the driving mechanism and the door body results in transmission efficiency with low driving force.

  An object of this invention is to provide the platform door which can transmit a driving force from a drive source to a door body efficiently.

  A platform door according to an aspect of the present invention includes a door body installed on the platform, a first door accommodated in the door pocket, the door door, and the first door and a train passing therethrough. And a drive mechanism that drives the first door and the second door. The drive mechanism includes a drive source that generates a drive force, and a transmission mechanism that transmits the drive force to the first door and the second door. The transmission mechanism is disposed between the first door and the second door disposed in the door pocket.

  According to the above configuration, since the transmission mechanism is arranged between the first door and the second door arranged in the door pocket, the distance between the transmission mechanism and the first door, the transmission mechanism, and the second door Both of these distances become shorter. Therefore, the driving force is efficiently transmitted from the driving source to the first door and the second door.

  A platform door according to another aspect of the present invention is displaced between a door bag body installed on the platform, a first storage position stored in the door bag body, and a first protrusion position protruding from the door bag body. A first door that includes a main door that moves, a second housing position that is housed in the parent door, and a child door that is displaced from the second projecting position that projects from the parent door; And a second door disposed between the first door and the track space through which the train passes, and a drive mechanism that drives the first door and the second door. The drive mechanism includes a drive source that generates a drive force, and a transmission mechanism that transmits the drive force to the first door and the second door. The transmission mechanism is disposed between the first door and the second door disposed in the door pocket.

  According to the above configuration, since the transmission mechanism is arranged between the first door and the second door arranged in the door pocket, the distance between the transmission mechanism and the first door, the transmission mechanism, and the second door Both of these distances become shorter. Therefore, the driving force is efficiently transmitted from the driving source to the first door and the second door.

  In the above configuration, the transmission mechanism may be configured such that the child between the second storage position and the second protruding position is displaced by the displacement of the main door between the first storage position and the first protruding position. An interlocking mechanism that interlocks the displacement of the door may be included. The main door may include a wall portion having a first surface facing the second door and a second surface opposite to the first surface in the door pocket. The interlocking mechanism may include a first pulley attached to the second surface, a first belt held by the first pulley, and a clamp member that grips the first belt. The clamp member may be held by the door pocket body between the first door and the second door.

  According to the said structure, since a clamp member is hold | maintained by the door pocket body between a 1st door and a 2nd door, a driving force is efficiently transmitted to an interlocking mechanism.

  The said structure WHEREIN: The slot extended along the said displacement direction of the said main door may be formed in the said wall part. The clamp member may include a base connected to the door pocket body, and a clamp piece extending from the base through the slot into the main door and gripping the first belt.

  According to the above configuration, since the slot that extends along the direction of displacement of the main door is formed in the wall portion, the first door can be smoothly displaced without interfering with the clamp piece.

  In the above configuration, the drive source may include a motor that drives the first door. The transmission mechanism may include a second belt connected to the motor and a second pulley that holds the second belt. The main door may include a first area in which an opening area is formed and a second area adjacent to the first area. When the main door is in the first projecting position, the first region may exist in the door pocket while the second region may protrude from the door bag. When the main door is in the first protruding position, the opening region may expose the second pulley.

  According to the above configuration, when the main door is in the first protruding position, the second pulley can be exposed from the opening region, so that the operator can easily repair and / or check the transmission mechanism. I can.

  The displacement track of the child door may be further away from the track space than the displacement track of the parent door.

  According to the above configuration, the displacement trajectory of the child door is further away from the orbit space than the displacement trajectory of the parent door, so that the platform door can separate passengers on the platform from the orbit space.

  In the above-described configuration, the door pocket body includes (i) a main housing part that defines a first housing space in which the first door and the second door are housed, and (ii) a control unit that controls the drive mechanism. A lid that defines the second accommodation space to be accommodated in cooperation with the main housing; (iii) a closed position that closes the first accommodation space; and an open position that exposes the first accommodation space. (Iv) a key portion that fixes the door body to the main housing portion in the closed position; and (v) the lid portion in the first housing space. And a connection mechanism that is connected to the housing. The connection mechanism includes: (a) a first hook attached to the lid portion; (b) a second hook engaged with the first hook; and (c) a second hook engaged with the first hook. And a lever that is manually displaced between a lock position where the second hook is elastically deformed and a release position where the elastic deformation of the second hook is released.

  According to the said structure, since a key part fixes a door body to a main housing part in a closed position, a connection mechanism is not operated unnecessarily. The operator can release the fixation between the door body and the main housing by operating the key portion. Thereafter, the operator can operate the lever to weaken the engagement between the first hook and the second hook, so that the operator can open the second accommodation space without using a key. it can.

  The platform door described above efficiently transmits driving force from the driving source to the door body.

1 is a conceptual cross-sectional view of a platform door of a first embodiment. It is a notional transverse cross section of the platform door of a 2nd embodiment. FIG. 3 is a schematic front view of a first transmission mechanism of the platform door shown in FIG. 2. FIG. 4 is another conceptual cross-sectional view of another platform door shown in FIG. 2. FIG. 3 is a schematic front view of a second transmission mechanism of the platform door shown in FIG. 2. It is a notional cross section of the platform door of a 3rd embodiment. FIG. 7 is a conceptual cross-sectional view of the platform door shown in FIG. 6. It is a schematic front view of the platform door of 4th Embodiment. FIG. 9 is a schematic cross-sectional view of the platform door shown in FIG. 8 (fifth embodiment). It is a schematic longitudinal cross-sectional view of the platform door shown by FIG. FIG. 9 is a schematic front view of the platform door shown in FIG. 8. FIG. 9 is a schematic cross-sectional view of the platform door shown in FIG. 8 (sixth embodiment). It is a schematic longitudinal cross-sectional view of the door body of the platform door shown by FIG. 8 (7th Embodiment). It is a schematic enlarged view of the connection mechanism of the platform door shown in FIG.

  Various embodiments of the platform door will be described with reference to the accompanying drawings. The terms representing directions such as “front”, “back”, “left”, “right”, “up” and “down” are used based on a passenger standing on the platform facing the platform door. However, these terms are for the purpose of clarity only and do not limit the principles of the following embodiments.

<First Embodiment>
FIG. 1 is a conceptual cross-sectional view of the platform door 100 of the first embodiment. With reference to FIG. 1, a platform door 100 is described. The solid line shown in FIG. 1 represents force transmission. The dotted line shown in FIG. 1 represents the movement of the platform door 100.

  FIG. 1 shows an orbital space and a platform space. A train (not shown) passes through the track space. The platform space is a space on the platform PLF. FIG. 1 shows an edge EDG of the platform PLF that defines the boundary between the orbital space and the platform space. The edge EDG extends in the traveling direction of the train. The platform door 100 is disposed near the edge EDG and partitions the track space from the platform space. As a result, the platform door 100 can protect passengers on the platform PLF from the train.

  The platform door 100 includes a door pocket body 200, a front door 300, a back door 400, and a drive mechanism 500. The door bag body 200 is installed in the platform PLF. The drive mechanism 500 drives the front door 300 and the back door 400. The front door 300 and the back door 400 shown in FIG. 1 are accommodated in the door pocket body 200. The back door 400 is located between the front door 300 and the orbital space in the door pocket body 200. The drive mechanism 500 drives the front door 300 and the back door 400, displaces the front door 300 to the right, and displaces the back door 400 to the left. At this time, the front door 300 protrudes rightward from the door pocket body 200, and the back door 400 protrudes leftward from the door pocket body 200. In the present embodiment, the first door is exemplified by the front door 300. The second door is exemplified by the back door 400.

  The drive mechanism 500 includes a drive source 510 and a transmission mechanism 520. The driving source 510 generates a driving force. The driving force is transmitted from the driving source 510 to the transmission mechanism 520. The transmission mechanism 520 transmits the driving force to the front door 300 and the back door 400.

  The drive source 510 may be a motor or another device that can generate a driving force. The principle of this embodiment is not limited to a specific device used as the drive source 510.

  The transmission mechanism 520 is disposed between the front door 300 and the back door 400 in the door pocket body 200. Therefore, both the distance between the transmission mechanism 520 and the front door 300 and the distance between the transmission mechanism 520 and the back door 400 are shortened. Therefore, the driving force is efficiently transmitted from the driving source 510 to the front door 300 and the back door 400.

  A designer who designs the platform door 100 can give the transmission mechanism 520 various structures. The transmission mechanism 520 may be a combination of a pulley and a belt. Alternatively, the transmission mechanism 520 may be a combination of a rack and a pinion. Further alternatively, the transmission mechanism 520 may be another structure capable of driving the front door 300 and the back door 400. The principle of this embodiment is not limited to a specific structure of the transmission mechanism 520.

Second Embodiment
The designer may design the transmission mechanism using a pulley and a belt. In the second embodiment, a platform door including a front door and a rear door driven by a combination of a pulley and a belt will be described.

  FIG. 2 is a conceptual cross-sectional view of the platform door 100A of the second embodiment. The code | symbol used in common between 1st Embodiment and 2nd Embodiment means that the element to which the said common code | symbol was attached | subjected has the same function as 1st Embodiment. Therefore, description of 1st Embodiment is used for these elements. With reference to FIGS. 1 and 2, the platform door 100A will be described.

  Similar to the first embodiment, the platform door 100 </ b> A includes a front door 300 and a back door 400. The description of the first embodiment is incorporated in these elements.

  The platform door 100A further includes a door pocket body 200A and a first drive mechanism 501. The door bag body 200A corresponds to the door bag body 200 described with reference to FIG. The description regarding the door pocket body 200 is incorporated into the door pocket body 200A.

  The door bag body 200 </ b> A includes a main housing 210 and a bracket 221. Main housing 210 includes a front wall 211, a back wall 212, a left wall 213, and a right wall 214. The front wall 211 is erected between the platform space and the front door 300. The back wall 212 is erected between the front wall 211 and the orbit space. The left wall 213 is erected between the left edge of the front wall 211 and the left edge of the back wall 212. The right wall 214 is erected between the right edge of the front wall 211 and the right edge of the back wall 212. The bracket 221 is fixed to the inner surface of the right wall 214. The main housing 210 defines a storage space 215 in which the front door 300, the back door 400, and the first drive mechanism 501 are stored. In the present embodiment, the main housing unit is exemplified by the main housing 210. The first accommodation space is exemplified by the accommodation space 215.

  The first drive mechanism 501 drives the front door 300. The first drive mechanism 501 includes a first motor 511 and a first transmission mechanism 530. The first motor 511 is fixed next to the left wall 213. The first motor 511 generates a driving force for driving the front door 300. The first transmission mechanism 530 includes pulleys 531 and 532, a belt 533, and a first clamp member 534. The pulley 531 is attached to the first motor 511. The pulley 532 is attached to the bracket 221. The belt 533 is wound around pulleys 531 and 532. The first motor 511 rotates the pulley 531. As a result, the pulley 532 connected to the belt 533 rotates in conjunction with the pulley 531. The belt 533 rotates around the pulleys 531 and 532. The rotation shafts of the pulleys 531 and 532 are set horizontally. Therefore, the gap between the front door 300 and the back door 400 may be narrow. In the present embodiment, the motor is exemplified by the first motor 511. The transmission mechanism is exemplified by the first transmission mechanism 530. The second pulley is exemplified by pulley 532. The second belt is exemplified by belt 533.

  Front door 300 includes a front surface 301 and a back surface 302. The front surface 301 faces the front wall 211. A back surface 302 opposite to the front surface 301 faces the back door 400. The first clamp member 534 is attached to the back surface 302.

  FIG. 3 is a schematic front view of the first transmission mechanism 530. The first transmission mechanism 530 is described with reference to FIGS. 2 and 3.

  The belt 533 includes an upper belt portion 535 and a lower belt portion 536. The upper belt portion 535 extends substantially horizontally between the pulleys 531 and 532. The lower belt portion 536 extends substantially horizontally between the pulleys 531 and 532 below the upper belt portion 535. The first clamp member 534 grips the upper band portion 535. As a result, the driving force is transmitted from the first motor 511 (see FIG. 2) to the front door 300.

  FIG. 4 is another conceptual cross-sectional view of another platform door 100A. With reference to FIGS. 2 and 4, the platform door 100A will be described.

  The platform door 100A further includes a second drive mechanism 502. The door bag body 200 </ b> A includes a bracket 222. The second drive mechanism 502 and the bracket 222 are disposed in the accommodation space 215. The bracket 222 is disposed above the bracket 221 described with reference to FIG.

  The second drive mechanism 502 drives the back door 400. The second drive mechanism 502 includes a second motor 512 and a second transmission mechanism 540. The second motor 512 is fixed next to the left wall 213 above the first motor 511. Accordingly, the second motor 512 overlaps the first motor 511 in the vertical direction. The second motor 512 generates a driving force for driving the back door 400. The second transmission mechanism 540 is constructed above the first transmission mechanism 530. Therefore, the second transmission mechanism 540 overlaps the first transmission mechanism 530 in the vertical direction. The second transmission mechanism 540 includes pulleys 541 and 542, a belt 543, and a second clamp member 544. The pulley 541 is attached to the second motor 512. The pulley 542 is attached to the bracket 222. The belt 543 is wound around the pulleys 541 and 542. The second motor 512 rotates the pulley 541. As a result, the pulley 542 connected to the belt 543 rotates in conjunction with the pulley 541. The belt 543 circulates around the pulleys 541 and 542. The rotation shafts of the pulleys 541 and 542 are set horizontally. Therefore, the gap between the front door 300 and the back door 400 may be narrow.

  The back door 400 includes a front surface 401 and a back surface 402. The back surface 402 faces the back wall 212. A front surface 401 opposite to the back surface 402 faces the front door 300. The second clamp member 544 is attached to the front surface 401.

  FIG. 5 is a schematic front view of the second transmission mechanism 540. The second transmission mechanism 540 is described with reference to FIGS. 1, 2, 4, and 5.

  The belt 543 includes an upper belt portion 545 and a lower belt portion 546. The upper belt portion 545 extends substantially horizontally between the pulleys 541 and 542. The lower belt portion 546 extends substantially horizontally between the pulleys 541 and 542 below the upper belt portion 545. The second clamp member 544 grips the upper band portion 545. As a result, the driving force is transmitted from the second motor 512 (see FIG. 4) to the back door 400.

  The set of the first motor 511 and the second motor 512 corresponds to the drive source 510 described with reference to FIG. The set of the first transmission mechanism 530 (see FIG. 2) and the second transmission mechanism 540 corresponds to the transmission mechanism 520 described with reference to FIG. In this embodiment, two motors (a first motor 5110 and a second motor 512) are used. Alternatively, the front door and the back door may be driven by one motor. For example, if one of the front door and the back door is connected to the upper belt part of the belt and the other of the front door and the back door is connected to the lower belt part of the belt, the front door and the back door are It is displaced by a single motor that drives the belt.

<Third Embodiment>
A designer who designs the platform door may form the front door and / or the back door using a plurality of door bodies. If a plurality of door bodies are slidably connected, the front door and / or the back door can protrude greatly from the small door pocket body. In 3rd Embodiment, the platform door provided with the door body which can be slid relatively is demonstrated.

  FIG. 6 is a conceptual cross-sectional view of the platform door 100B of the third embodiment. A symbol used in common between the second embodiment and the third embodiment means that an element to which the common symbol is attached has the same function as that of the second embodiment. Therefore, description of 2nd Embodiment is used for these elements. With reference to FIGS. 2, 4 and 6, the platform door 100B will be described.

  Similar to the second embodiment, the platform door 100B includes a door pocket body 200A, a first drive mechanism 501, and a second drive mechanism 502. The description of the second embodiment is incorporated in these elements.

  The platform door 100B further includes a front door 300B and a back door 400B. The front door 300B corresponds to the front door 300 described with reference to FIG. The description regarding the front door 300 is used for the front door 300B. The back door 400B corresponds to the back door 400 described with reference to FIG. The description regarding the back door 400 is incorporated into the back door 400B.

  Front door 300 </ b> B includes a main door 310, a child door 320, and a first coupling mechanism 330. As shown in FIG. 6, when the parent door 310 is accommodated in the door bag body 200 </ b> A, the child door 320 is accommodated in the parent door 310.

  The main door 310 includes a back wall 311 and a front wall 312. The back wall 311 includes an outer back surface 391 and an inner front surface 392. The first clamp member 534 of the first drive mechanism 501 is attached to the outer back surface 391. The outer back surface 391 corresponds to the back surface 302 described with reference to FIG. The description regarding the back surface 302 is incorporated in the outer back surface 391. An inner front surface 392 opposite to the outer rear surface 391 faces the child door 320. The first coupling mechanism 330 is constructed between the inner front surface 392 and the child door 320. Therefore, the displacement trajectory of the child door 320 is farther from the trajectory space than the displacement trajectory of the parent door 310. The front wall 312 includes an outer front surface 396 and an inner rear surface 397. The outer front surface 396 faces the front wall 211 of the door pocket body 200A. An inner back surface 397 opposite to the outer front surface 396 faces the child door 320 in the parent door 310. In the present embodiment, the first surface is exemplified by the outer back surface 391. The second surface is exemplified by the inner front surface 392. The wall is exemplified by a back wall 311.

  The rear door 400 </ b> B includes a main door 410, a child door 420, and a second connection mechanism 430. When the parent door 410 is accommodated in the door pocket body 200 </ b> A, the child door 420 is accommodated in the parent door 410.

  The main door 410 includes a back wall 411 and a front wall 412. The back wall 411 includes an outer back surface 493 and an inner front surface 494. The outer back surface 493 faces the back wall 212 of the door pocket body 200A. An inner front surface 494 opposite to the outer rear surface 493 faces the child door 420. The second connection mechanism 430 is constructed between the inner front surface 494 and the child door 420. Therefore, the displacement track of the child door 420 is farther from the track space than the displacement track of the parent door 410. The front wall 412 includes an outer front surface 496 and an inner rear surface 497. The second clamp member 544 of the second drive mechanism 502 is attached to the outer front surface 496. The outer front surface 496 corresponds to the front surface 401 described with reference to FIG. The description regarding the front surface 401 is incorporated in the outer back surface 493. The inner back surface 497 faces the child door 420 in the parent door 410.

  FIG. 7 is a conceptual cross-sectional view of the platform door 100B. With reference to FIG.6 and FIG.7, the platform door 100B is demonstrated.

  The first drive mechanism 501 drives the front door 300B and displaces the front door 300B to the right. As a result, the master door 310 protrudes rightward from the door pocket body 200A. The first coupling mechanism 330 slidably couples the child door 320 to the parent door 310. The child door 320 is displaced to the right relative to the parent door 310 in synchronization with the displacement of the parent door 310 to the right. As a result, the child door 320 protrudes rightward from the parent door 310. The first coupling mechanism 330 may be a combination of a rail and a slider. Alternatively, the first coupling mechanism 330 may be a combination of a rod and a slide bearing. Further alternatively, the first coupling mechanism 330 may be another structure that allows displacement of the child door 320 relative to the parent door 310 in a linear manner. The principle of the present embodiment is not limited to a specific structure of the first coupling mechanism 330.

  In the present embodiment, the first accommodation position is exemplified by the position of the main door 310 shown in FIG. The first protruding position is exemplified by the position of the main door 310 shown in FIG. The second storage position is exemplified by the position of the child door 320 shown in FIG. The second storage position is exemplified by the position of the child door 320 shown in FIG. The coupling mechanism is exemplified by the first coupling mechanism 330.

  The second drive mechanism 502 drives the back door 400B and displaces the back door 400B to the left. As a result, the main door 410 protrudes leftward from the door pocket body 200A. The second connecting mechanism 430 connects the child door 420 to the parent door 410 so as to be slidable. The child door 420 is displaced to the left relative to the parent door 410 in synchronization with the leftward displacement of the parent door 410. As a result, the child door 420 protrudes leftward from the parent door 410. The second coupling mechanism 430 may be a combination of a rail and a slider. Alternatively, the second coupling mechanism 430 may be a combination of a rod and a slide bearing. Further alternatively, the second coupling mechanism 430 may be another structure that allows displacement of the child door 420 relative to the parent door 410 in a linear manner. The principle of the present embodiment is not limited to the specific structure of the second coupling mechanism 430.

<Fourth embodiment>
Designers can design various platform doors according to the design principles described in connection with the third embodiment. In a fourth embodiment, an exemplary platform door is described.

  FIG. 8 is a schematic front view of the platform door 100C of the fourth embodiment. The platform door 100C is described with reference to FIG. 1, FIG. 6 and FIG.

  The platform door 100C includes a door pocket body 200C, a front door 300C, a back door 400C, a first drive mechanism 501C, and a second drive mechanism 502C. The door bag body 200C includes a back wall 212C, a left wall 213C, and a right wall 214C. The back wall 212C is erected between the back door 400C and the track space. The left wall 213C is erected along the left edge of the back wall 212C. The right wall 214C is erected along the right edge of the back wall 212C. The back wall 212C, the left wall 213C, and the right wall 214C define an accommodation space 215C in which the front door 300C and the back door 400C are accommodated. The door bag body 200C corresponds to the door bag body 200A described with reference to FIG. The front door 300C corresponds to the front door 300B described with reference to FIG. The back door 400C corresponds to the back door 400B described with reference to FIG.

  As shown in FIG. 8, the front door 300C can protrude rightward from the right wall 214C. The front door 300C can also be accommodated in the door pocket 200C through the right wall 214C.

  As shown in FIG. 8, the back door 400C can protrude leftward from the left wall 213C. The back door 400C can be accommodated in the door pocket body 200C through the left wall 213C.

  The first drive mechanism 501C includes a first motor 511C, pulleys 531C and 532C, a belt 533C, and a first clamp member 534C. The first motor 511C is fixed to the left wall 213C. The rotation shaft of the first motor 511C is set substantially horizontal. Although the first motor 511C is located on the displacement track of the front door 300C, the first motor 511C is fixed to the left wall 213C, so that even when the front door 300C is completely accommodated in the door pocket 200C. The front door 300C does not collide with the first motor 511C. The pulley 531C is attached to the first motor 511C. The pulley 532C is attached to the right wall 214C. The pulley 532C may have a function of adjusting the tension of the belt 533C. The belt 533C is wound around the pulleys 531C and 532C. The pulleys 531C and 532C and the belt 533C are disposed between the front door 300C and the back door 400C. The first clamp member 534C is fixed to the front door 300C. The first clamp member 534C grips the belt 533C.

  The first motor 511C rotates the pulley 531C. The pulley 532C rotates following the rotation of the pulley 531C. The belt 533C circulates around the pulleys 531C and 532C. Since the first clamp member 534C is attached to the front door 300C, the front door 300C can move in accordance with the circulation of the belt 533C. The moving direction of the front door 300C depends on the rotating direction of the first motor 511C.

  The second drive mechanism 502C includes a second motor 512C, pulleys 541C and 542C, a belt 543C, and a second clamp member 544C. The second motor 512C is fixed to the left wall 213C. The rotation shaft of the second motor 512C is set substantially horizontal. The second motor 512C is located on the displacement track of the front door 300C. However, since the second motor 512C is fixed to the left wall 213C, even when the front door 300C is completely accommodated in the door pocket 200C. The front door 300C does not collide with the second motor 512C. The pulley 541C is attached to the second motor 512C. The pulley 542C is attached to the right wall 214C. The pulley 542C may have a function of adjusting the tension of the belt 543C. The belt 543C is wound around the pulleys 541C and 542C. The pulleys 541C and 542C and the belt 543C are disposed between the front door 300C and the back door 400C. The second clamp member 544C is fixed to the back door 400C. The second clamp member 544C grips the belt 543C.

  The second motor 512C rotates the pulley 541C. The pulley 542C rotates following the rotation of the pulley 541C. The belt 543C goes around the pulleys 541C and 542C. Since the second clamp member 544C is attached to the back door 400C, the back door 400C can move in accordance with the circulation of the belt 543C. The movement direction of the back door 400C depends on the rotation direction of the second motor 512C.

  The first motor 511C and the second motor 512C correspond to the drive source 510 described with reference to FIG. The pulleys 531C, 532C, 541C, and 542C, the belts 533C and 543C, the first clamp member 534C, and the second clamp member 544C correspond to the transmission mechanism 520 described with reference to FIG.

  The front door 300C includes a main door 310C, a child door 320C, and a first coupling mechanism 330C. The main door 310C includes a back wall 311C, an upper edge wall 313, a lower edge wall 314, and a right edge wall 315. The back wall 311C corresponds to the back wall 311 described with reference to FIG. The description regarding the back wall 311 is incorporated in the back wall 311C.

  The upper edge wall 313 extends substantially horizontally along the upper edge of the back wall 311C. The lower edge wall 314 extends substantially horizontally below the upper edge wall 313 and along the lower edge of the back wall 311C. The right edge wall 315 extends substantially perpendicularly along the right edge of the back wall 311C. The upper edge wall 313, the lower edge wall 314, and the right edge wall 315 protrude from the back wall 311C toward the platform space. The back wall 311C, the upper edge wall 313, the lower edge wall 314, and the right edge wall 315 define a space in which the child door 320C is accommodated.

  The first coupling mechanism 330C includes an upper rail 331, a lower rail 332, an upper slider 333, and a lower slider 334. The upper rail 331 and the lower rail 332 are fixed to the back wall 311C of the main door 310C. The upper rail 331 extends substantially horizontally near the upper edge wall 313. The lower rail 332 extends substantially horizontally near the lower edge wall 314. As shown in FIG. 8, the child door 320 </ b> C includes a left edge 321, an upper ear 322, and a lower ear 323. The left edge 321 extending in the vertical direction is always accommodated in the main door 310C. The upper ear 322 protrudes leftward from the left edge 321. The lower ear portion 322 protrudes leftward from the left edge 321 below the upper ear portion 322. The upper slider 333 is connected to the upper rail 331. The lower slider 334 is connected to the lower rail 332. The upper slider 333 is attached to the upper ear 322. The lower slider 334 is attached to the lower ear portion 323. Therefore, the child door 320C can be displaced relatively in the substantially horizontal direction with respect to the parent door 310C. The first coupling mechanism 330C corresponds to the first coupling mechanism 330 described with reference to FIG.

  The rear door 400C includes a main door 410C, a child door 420C, and a second coupling mechanism 430C. The main door 410C includes a back wall 411C, an upper edge wall 413, a lower edge wall 414, and a left edge wall 415. The back wall 411C is erected between the child door 420C and the back wall 212C. The upper edge wall 413 extends substantially horizontally along the upper edge of the back wall 411C. The lower edge wall 414 extends substantially horizontally below the upper edge wall 413 along the lower edge of the back wall 411C. The left edge wall 415 extends substantially perpendicularly along the left edge of the back wall 411C. The upper edge wall 413, the lower edge wall 414, and the left edge wall 415 protrude from the back wall 411C toward the platform space. The back wall 411C, the upper edge wall 413, the lower edge wall 414, and the left edge wall 415 define a space in which the child door 420C is accommodated.

  The second coupling mechanism 430C includes an upper rail 431, a lower rail 432, an upper slider 433, and a lower slider 434. The upper rail 431 and the lower rail 432 are fixed to the back wall 411C. The upper rail 431 extends substantially horizontally near the upper edge wall 413. The lower rail 432 extends substantially horizontally near the lower edge wall 414. As shown in FIG. 8, the child door 420 </ b> C includes a right edge 421, an upper ear portion 422, and a lower ear portion 423. The right edge 421 extending in the vertical direction is always accommodated in the main door 410C. The upper ear portion 422 protrudes rightward from the right edge 421. The lower ear 322 protrudes to the right from the right edge 421 below the upper ear 322. The upper slider 433 is connected to the upper rail 431. The lower slider 434 is connected to the lower rail 432. The upper slider 433 is connected to the upper ear 422. The lower slider 434 is connected to the lower ear part 423. Therefore, the child door 420C can be displaced relatively in the substantially horizontal direction with respect to the parent door 410C. The second coupling mechanism 430C corresponds to the second coupling mechanism 430 described with reference to FIG.

<Fifth Embodiment>
Because the platform door is fixed on the platform, the time given to check or repair the platform door is very short. Therefore, the designer may incorporate a structure for shortening the work period such as inspection and repair into the platform door. In the fifth embodiment, a technique for shortening the period of work such as inspection and repair will be described.

  FIG. 9 is a schematic cross-sectional view of the platform door 100C. The code | symbol used in common between 4th Embodiment and 5th Embodiment means that the element to which the said common code | symbol was attached | subjected has the same function as 4th Embodiment. Therefore, description of 4th Embodiment is used for these elements. The platform door 100C will be described with reference to FIGS.

  As shown in FIG. 9, the door pocket body 200 </ b> C includes rotational door bodies 216 and 217. The door body 216 is attached to the left wall 213C of the door pocket body 200C. The door body 217 is attached to the right wall 214C of the door pocket body 200C. Each of the door bodies 216 and 217 rotates between a closed position and an open position. When the door bodies 216 and 217 are both in the closed position, the door bodies 216 and 217 cooperate with the back wall 212C, the left wall 213C, and the right wall 214C to close the accommodation space 215C. Therefore, the door bodies 216 and 217 can isolate the accommodation space 215C from the passengers in the platform space. When the door bodies 216 and 217 are in the open position, the accommodation space 215C is opened. In the present embodiment, the first accommodation space is exemplified by the accommodation space 215C.

  When the door body 216 is rotated to the open position, the first motor 511C and the second motor 512C are exposed. Therefore, the operator can open the door body 216 and easily access the first motor 511C and the second motor 512C. Therefore, the time required for inspection, repair and / or replacement of the first motor 511C and the second motor 512C is shortened.

  The main door 310C of the front door 300C is conceptually divided into a first area and a second area. The first region may be defined as a region where the main door 310C stays in the door bag body 200C when protruding from the door bag body 200C. The second region adjacent to the first region may be defined as a region exposed from the door bag body 200C when the main door 310C protrudes from the door bag body 200C.

  FIG. 10 is a schematic longitudinal sectional view of the platform door 100C. The platform door 100C will be further described with reference to FIGS.

  As shown in FIG. 10, the door pocket body 200 </ b> C includes a support wall 218 and main rails 231 and 232. The support wall 218 extends between the left wall 213C and the right wall 214C along the lower edge of the back wall 212C. The support wall 218 protrudes from the back wall 212C toward the platform space. The main rails 231 and 232 are fixed to the support wall 218. The main rails 231 and 232 extend between the left wall 213C and the right wall 214C. The main rail 232 is disposed between the main rail 231 and the back wall 212C.

  As shown in FIG. 8, main door 310 </ b> C of front door 300 </ b> C includes sliders 341 and 342. The sliders 341 and 342 are connected to the main rail 231. Therefore, the front door 300 </ b> C can be displaced along the main rail 231. The sliders 341 and 342 are disposed in the first area. Therefore, the door bag body 200C can appropriately hold the front door 300C that protrudes greatly.

  As shown in FIG. 10, the center line of the child door 320 </ b> C is farther from the track space than the center line of the main rail 231. Therefore, the platform door 100C can keep passengers in the platform space away from the track space.

  As shown in FIG. 8, the main door 410 </ b> C of the back door 400 </ b> C includes sliders 441 and 442. The sliders 441 and 442 are connected to the main rail 232. Therefore, the rear door 400 </ b> C can be displaced along the main rail 232. When the rear door 400C largely protrudes from the door bag body 200C, the sliders 441 and 442 remain in the door bag body 200C. Therefore, the door bag 200C can appropriately hold the rear door 400C that protrudes greatly.

  As shown in FIG. 9, even when the front door 300C protrudes greatly from the door bag body 200C, the back wall 311C of the main door 310C exists in front of the pulleys 532C and 542C in the first region.

  As shown in FIG. 8, openings 316 and 317 are formed in the first region in the back wall 311C. When the front door 300C largely protrudes from the door bag body 200C, the opening 316 overlaps the lower pulley 532C in the front-rear direction. When the front door 300C largely protrudes from the door bag body 200C, the opening 317 overlaps the upper pulley 542C in the front-rear direction. Since the pulleys 532C and 542C are exposed from the openings 316 and 317, respectively, the operator can easily access the pulleys 532C and 542C through the openings 316 and 317. Accordingly, the time required for inspection, repair and / or replacement of the belts 533C and 543C and the pulleys 532C and 542C is shortened. In the present embodiment, the opening region is exemplified by a substantially rectangular opening 316. Alternatively, the open area may have other shapes. The principle of this embodiment is not limited to a specific shape of the opening region.

  FIG. 11 is a schematic front view of the platform door 100C. With reference to FIGS. 9 and 11, the platform door 100C will be further described.

  The platform door 100C further includes cover plates 610 and 620. The cover plate 610 is attached to the main door 310C of the front door 300C and entirely covers the second region. Therefore, the cover plate 610 can isolate the first coupling mechanism 330C from passengers in the platform space. An operator can remove the cover plate 610 from the main door 310C and easily access the first coupling mechanism 330C. Accordingly, the time required for inspection, repair and / or replacement of the first coupling mechanism 330C is shortened.

  The cover plate 620 is attached to the main door 410C of the back door 400C and entirely covers the second coupling mechanism 430C exposed from the door pocket body 200C. Therefore, the cover plate 620 can isolate the second coupling mechanism 430C from the passengers in the platform space. An operator can remove the cover plate 620 from the main door 410C and easily access the second coupling mechanism 430C. Therefore, the time required for inspection, repair, and / or replacement of the second coupling mechanism 430C is shortened.

<Sixth Embodiment>
As described in relation to the third embodiment, the child door is displaced in conjunction with the parent door. Therefore, the transmission mechanism may have an interlocking mechanism that interlocks the child door with the parent door. The designer can give various structures to the interlocking mechanism. In a sixth embodiment, a platform door with an exemplary interlocking mechanism is described.

  FIG. 12 is a schematic cross-sectional view of the platform door 100C. The code | symbol used in common between 5th Embodiment and 6th Embodiment means that the element to which the said common code | symbol was attached | subjected has the same function as 5th Embodiment. Therefore, description of 5th Embodiment is used for these elements. The platform door 100C is described with reference to FIG. 1, FIG. 8, FIG. 10, and FIG.

  The platform door 100C includes a first interlocking mechanism 550 and a second interlocking mechanism 560. The first interlocking mechanism 550 transmits the driving force generated by the first motor 511C (see FIG. 8) to the child door 320C of the front door 300C. As a result, the displacement of the child door 320C is interlocked with the displacement of the parent door 310C. When the parent door 310C is accommodated in the door pocket body 200C, the child door 320C is accommodated in the parent door 310C. When the parent door 310C protrudes from the door bag body 200C, the child door 320C protrudes from the parent door 310C. The second interlocking mechanism 560 transmits the driving force generated by the second motor 512C (see FIG. 8) to the child door 420C of the rear door 400C. As a result, the displacement of the child door 420C is interlocked with the displacement of the parent door 410C. When the parent door 410C is accommodated in the door pocket body 200C, the child door 420C is accommodated in the parent door 410C. When the main door 410C protrudes from the door bag body 200C, the child door 420C protrudes from the main door 410C. Each of the first interlocking mechanism 550 and the second interlocking mechanism 560 forms part of the transmission mechanism 520 described with reference to FIG. In the present embodiment, the interlocking mechanism is exemplified by the first interlocking mechanism 550.

  As shown in FIG. 8, the first interlock mechanism 550 includes pulleys 551 and 552, a belt 553, a third clamp member 554, and a fourth clamp member 555. As shown in FIG. 12, the back wall 311 </ b> C of the main door 310 </ b> C includes a front surface 318 and a back surface 319 opposite to the front surface 318. The front surface 318 faces the door 217 in the closed position in the first region. Pulley 551 is attached to front surface 318 in the second region, while pulley 552 is attached to front surface 318 in the first region. The pulley 551 is fixed at a height position substantially equal to the pulley 552. In the present embodiment, the second surface is exemplified by the front surface 318. The first pulley is exemplified by one of the pulleys 551 and 552.

  As shown in FIG. 8, the belt 553 is wound around pulleys 551 and 552. The belt 553 includes an upper belt portion 556 and a lower belt portion 557. The upper belt portion 556 extends substantially horizontally between the pulleys 551 and 552. The lower belt portion 557 extends substantially horizontally between the pulleys 551 and 552 below the upper belt portion 556. In the present embodiment, the first belt is exemplified by a belt 553.

  As shown in FIG. 8, the third clamp member 554 is fixed to the left edge 321 of the child door 320C. The third clamp member 554 extends from the left edge 321 and grips the upper band portion 556.

  As shown in FIG. 12, the door pocket body 200C includes a bracket 241 fixed to the right wall 214C. A back surface 319 of the back wall 311 </ b> C faces the bracket 241. As shown in FIG. 10, the bracket 241 is disposed between the front door 300C and the back door 400C. Accordingly, the first drive mechanism 501C, the second drive mechanism 502C, and the bracket 241 are aligned in the vertical direction.

  As shown in FIG. 8, a slot 351 extending substantially horizontally is formed in the back wall 311C at a position slightly above the bracket 241. As shown in FIG. 10, the fourth clamp member 555 includes a base 558 and a clamp piece 559. The base 558 is fixed to the bracket 241. The clamp piece 559 extends upward from the base portion 558 and is inserted into the main door 310 </ b> C through the slot 351. The clamp piece 559 grips the lower belt portion 557 (see FIG. 8) in the main door 310C. Since the slot 351 extends in the displacement direction of the main door 310C, the clamp piece 559 does not interfere with the main door 310C.

  As shown in FIG. 8, the second interlocking mechanism 560 includes pulleys 561 and 562, a belt 563, and fifth clamp members 564 and 565. As shown in FIG. 12, the back wall 411 </ b> C of the main door 410 </ b> C includes a front surface 418 and a back surface 419 opposite to the front surface 418. The front surface 418 faces the door body 216 in the closed position. The pulleys 561 and 562 are attached to the front surface 418. When the rear door 400C is greatly protruded from the door bag body 200C, the pulley 561 is disposed outside the door bag body 200C, while the pulley 562 remains in the door bag body 200C. The pulley 561 is fixed at a height position substantially equal to the pulley 562.

  As shown in FIG. 8, the belt 563 is wound around pulleys 561 and 562. The belt 563 includes an upper belt portion 566 and a lower belt portion 567. The upper belt portion 566 extends substantially horizontally between the pulleys 561 and 562. The lower belt portion 567 extends substantially horizontally between the pulleys 561 and 562 below the upper belt portion 566.

  As shown in FIG. 8, the child door 420 </ b> C includes a right edge 421 to which the upper slider 433 and the lower slider 434 are attached. The fifth clamp member 564 is fixed to the right edge 421. The fifth clamp member 564 extends from the right edge 421 and grips the upper band portion 566.

  As shown in FIG. 12, the door pocket body 200 </ b> C includes a bracket 242. A back surface 419 of the back wall 411C faces the bracket 242. As shown in FIG. 10, the bracket 242 is fixed to the back wall 212C of the door pocket body 200C.

  As shown in FIG. 8, a slot 451 extending substantially horizontally is formed in the back wall 411C at a position slightly above the bracket 242. As shown in FIG. 10, the sixth clamp member 565 includes a base 568 and a clamp piece 569. The base 568 is fixed to the bracket 242. The clamp piece 569 extends upward from the base portion 568 and is inserted into the main door 410 </ b> C through the slot 451. The clamp piece 569 grips the lower belt portion 567 (see FIG. 8) in the main door 410C. Since the slot 451 extends in the displacement direction of the main door 410C, the clamp piece 569 does not interfere with the main door 410C.

  When the first motor 511C shown in FIG. 8 rotates counterclockwise, the belt 533C gripped by the first clamp member 534C is displaced to the left. Accordingly, the main door 310C including the first clamp member 534C is displaced leftward. While the pulleys 551 and 552 of the main door 310C are also displaced to the left, the fourth clamp member 555 fixed to the door bag body 200C grips the lower belt portion 557 of the belt 553, so that the belt 553 rotates counterclockwise. Go around. Since the third clamp member 554 grips the upper belt portion 556 of the belt 553, the child door 320C to which the third clamp member 554 is fixed is displaced leftward. Therefore, the child door 320C can be displaced at a speed twice that of the main door 310C.

  When the second motor 512C shown in FIG. 8 rotates counterclockwise, the belt 543C gripped by the second clamp member 544C is displaced to the right. Accordingly, the main door 410C including the second clamp member 544C is displaced rightward. While the pulleys 561 and 562 of the main door 410C are also displaced to the right, the sixth clamp member 565 fixed to the door pocket body 200C grips the lower belt portion 567 of the belt 563, so that the belt 563 is rotated counterclockwise. Go around. Since the fifth clamp member 564 grips the upper band portion 566 of the belt 563, the child door 420C to which the fifth clamp member 564 is fixed is displaced rightward. Therefore, the child door 420C can be displaced at a speed twice that of the main door 410C.

<Seventh embodiment>
The door bag body may have an accommodation space for accommodating a control unit that controls the drive source. In this case, the worker can check or repair the drive source and other electric devices near the door pocket. Since there are general passengers in the vicinity of the door body, the door body often has a large number of keys so that the passenger does not touch the control unit. Without a dedicated key, the passenger cannot access the control. However, many key parts result in inefficient work. An operator must unlock a plurality of key portions provided in the door pocket body in order to perform electrical inspection and repair. In 7th Embodiment, the technique for isolate | separating a control part appropriately from a passenger using few key parts is demonstrated.

  FIG. 13 is a schematic longitudinal sectional view of the door pocket body 200C. The code | symbol used in common between 6th Embodiment and 7th Embodiment means that the element to which the said common code | symbol was attached | subjected has the same function as 6th Embodiment. Therefore, description of 6th Embodiment is used for these elements. The platform door 100C is described with reference to FIG. 8, FIG. 9, and FIG.

  The door bag body 200 </ b> C includes a partition wall 251 and a lid portion 252. The partition wall 251 defines the upper boundary of the accommodation space 215C. The lid portion 252 is disposed above the partition wall 251. The lid portion 252 cooperates with the partition wall 251 to define the accommodation space 215C. A control device CTR is disposed in the accommodation space 215C. In the present embodiment, the second accommodation space is exemplified by the accommodation space 215C.

  The control device CTR may include a circuit that executes a control program that automatically controls the first motor 511C (see FIG. 8) and the second motor 512C (see FIG. 8) in accordance with the passage or stop of the train. . In addition, the control device CTR may include an interface (for example, a button or a switch) for manually operating the first motor 511C and the second motor 512C. The principle of this embodiment is not limited to a specific function or a specific structure of the control device CTR. In the present embodiment, the control unit is exemplified by the control device CTR.

  The lid 252 includes a back wall 254, a rotating wall 255, and a hinge 256. The back wall 254 continuously extends upward from the back wall 212C. The rotating wall 255 lies above the partition wall 251. A hinge 256 connects the pivot wall 255 to the back wall 254. The rotating wall 255 can rotate around the hinge 256. The rotating wall 255 may be provided with a keyed window. In this case, the operator can unlock the keyed window and manually operate the control device CTR. The principle of this embodiment is not limited to a specific structure of the rotating wall 255.

  The door bag body 200 </ b> C further includes a key portion 260. When the key portion 260 is locked, the door bodies 216 and 217 are fixed in position in the closed position. Without the dedicated key, the key part 260 is not unlocked. Therefore, a general passenger cannot access the accommodation space 215C. The operator can unlock the key unit 260 using a dedicated key. Thereafter, the operator can open the door bodies 216 and 217. The worker can access the accommodation space 215C and perform various operations. The key unit 260 may be various commercially available key parts. The principle of the present embodiment is not limited to a specific structure of the key unit 260.

  The door bag body 200 </ b> C further includes a connection mechanism 270. The connection mechanism 270 connects the lid 252 and the partition wall 251 in the accommodation space 215 </ b> C closed by the door bodies 216 and 217. Since the connection mechanism 270 is disposed in the accommodation space 215 </ b> C, the connection mechanism 270 is not accessed without unlocking the key portion 260.

  FIG. 14 is a schematic enlarged view of the connection mechanism 270. The connection mechanism 270 will be described with reference to FIGS. 13 and 14.

  Connection mechanism 270 includes an upper hook 271, a lower hook 272, a lever 273, a bracket 274, and shafts 275 and 276. The upper hook 271 is attached to the lid portion 252. The lower hook 272 is engaged with the upper hook 271. The bracket 274 is fixed to the partition wall 251. The shaft 275 is attached to the bracket 274. The lever 273 is connected to the shaft 275. The lever 273 can rotate up and down around the shaft 275. The shaft 276 is attached to the lever 273. The lower hook 272 is connected to the shaft 276. The lower hook 272 can rotate around the shaft 276. In the present embodiment, the first hook is exemplified by the upper hook 271.

  When the operator engages the lower hook 272 with the upper hook 271 and then rotates the lever 273 downward, the lower hook 272 is elastically deformed in the pulling direction. As a result, the lower hook 272 is strongly engaged with the upper hook 271. Accordingly, the lid 252 is appropriately locked.

  When the operator rotates the lever 273 upward, the elastic deformation of the lower hook 272 is released. Thereafter, the operator can rotate the lower hook 272 downward to release the engagement between the upper hook 271 and the lower hook 272. As a result, the lid 252 can be rotated.

  The operator can turn the lid portion 252 upward after releasing the engagement between the upper hook 271 and the lower hook 272. As a result, the worker can access the control device CTR and perform various operations.

  The principles of the various embodiments described above may be combined to meet the specifications required for station equipment.

  The principle of the above-described embodiment is suitably used as a platform facility where a train stops.

100, 100A, 100B, 100C ····················································································································· Door ..... Main housing 215, 215C ..... Storage space 216, 217 .... Door body 252 ..... lid part 260 ... Key part 270 ... ... Connection mechanism 271 ... Upper hook 272 ...・ ・ ・ ・ ・ ・ ・ ・ ・ Lower hook 273 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Lever 300, 300B, 300C ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Front door 310, 310C ・ ・ ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Parent doors 311 and 311C ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Back walls 316 and 317 ... opening 318 ... front 319 ... ... back 320, 320C ... child door 351 ... ··························· Slot 391 ... ..... Inner front surface 400, 400B, 400C ········································································. First drive mechanism 502, 502C Second drive mechanism 510・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Drive source 511, 511C ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・1 motor 520 ... transmission mechanism 530 ...・ ・ ・ ・ ・ ・ First transmission mechanism 532, 532C ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Pulley 533, 533C ・ ・ ・ ・ ・ ・ ・ ・..... Belt 540 ... ... 2nd transmission mechanism 550 ... 1st interlocking mechanism 551,552 ...・ ・ ・ ・ ・ ・ Pulley 553 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Belt 555 4th clamp member 558 ... Base 559 ...・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Clamp piece CTR ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・Control device PLF ... Platform

Claims (7)

A door pocket installed on the platform;
A first door housed in the door pocket;
A second door housed in the door pocket and disposed between the first door and a track space through which the train passes;
A drive mechanism for driving the first door and the second door;
The drive mechanism includes a drive source that generates a drive force, and a transmission mechanism that transmits the drive force to the first door and the second door,
The transmission mechanism is a platform door disposed between the first door and the second door disposed in the door pocket. A door pocket installed on the platform;
A main door that is displaced between a first housing position that is housed in the door pocket body and a first projecting position that projects from the door pocket body; a second housing position that is housed in the parent door; and the parent A first door including a second projecting position projecting from the door, and a child door displaced between;
A second door housed in the door pocket and disposed between the first door and a track space through which the train passes;
A drive mechanism for driving the first door and the second door;
The drive mechanism includes a drive source that generates a drive force, and a transmission mechanism that transmits the drive force to the first door and the second door,
The transmission mechanism is a platform door disposed between the first door and the second door disposed in the door pocket. The transmission mechanism is configured to change the displacement of the child door between the second accommodation position and the second protruding position to the displacement of the parent door between the first accommodation position and the first protruding position. Including interlocking mechanism to interlock,
The main door includes a wall portion having a first surface facing the second door and a second surface opposite to the first surface in the door pocket,
The interlocking mechanism includes a first pulley attached to the second surface, a first belt held by the first pulley, and a clamp member that grips the first belt,
The platform door according to claim 2, wherein the clamp member is held by the door pocket body between the first door and the second door. A slot extending along the direction of displacement of the main door is formed in the wall portion,
The platform door according to claim 3, wherein the clamp member includes a base portion connected to the door pocket body, and a clamp piece extending from the base portion through the slot into the main door and gripping the first belt. The drive source includes a motor that drives the first door;
The transmission mechanism includes a second belt connected to the motor, and a second pulley that holds the second belt,
The main door includes a first region in which an opening region is formed, and a second region adjacent to the first region,
When the main door is in the first protruding position, the first region exists in the door pocket, while the second region protrudes from the door bag.
The platform door according to any one of claims 2 to 4, wherein when the main door is in the first protruding position, the opening region exposes the second pulley. The platform door according to any one of claims 2 to 5, wherein the displacement track of the child door is further away from the track space than the displacement track of the parent door. The door pocket is
(I) a main housing defining a first housing space in which the first door and the second door are housed;
(Ii) a lid that defines a second housing space in which a controller for controlling the drive mechanism is housed in cooperation with the main housing;
(Iii) a door body that is displaced between a closed position that closes the first accommodation space and an open position that exposes the first accommodation space;
(Iv) a key portion for fixing the door body to the main housing portion in the closed position;
(V) a connection mechanism for connecting the lid to the main housing within the first housing space;
The connection mechanism is
(A) a first hook attached to the lid;
(B) a second hook engaged with the first hook;
(C) a lever that is manually displaced between a lock position that elastically deforms the second hook engaged with the first hook and a release position that releases the elastic deformation of the second hook; The platform door according to any one of claims 1 to 6.

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