JP2021041802A - Platform door device - Google Patents

Abstract

To simplify the structure of a platform door device, reduce weight, and facilitate assembling.SOLUTION: A platform door 1 comprises: a door guard fixed to a platform H; a first stage door 31 supported so as to be slidable with respect to the door guard; a second stage door 32 supported so as to be slidable with respect to the first stage door 31; a driving unit that slides the first stage door 31; a first pulley 51 provided to the first stage door 31; a second pulley 52 provided to the first stage door 31; a first wire 53 fixed at one end to a position closer to a base end side than the first pulley 51 so as not to move relatively to the first and the second stage doors 31, 32, fixed at the other end to the second stage door 32, and folded at the first pulley 51; and a second wire 54 fixed at one end to a position closer to a tip side than the second pulley 52 so as not to move relatively to the first and the second stage doors 31, 32, fixed at the other end to the second stage door 32, and folded at the second pulley 52.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to platform door devices.

In recent years, in the platform for getting on and off of the track vehicle, an openable platform door device is installed to protect passengers by preventing them from falling onto the track or coming into contact with the track vehicle. Is increasing. In this platform door device, passengers on the platform side and the track are partitioned by a wall surface formed by a movable part (door) and a fixed part (door pocket), and the movable part is stopped at a predetermined position. It is in a position that coincides with the entrance / exit of the track vehicle.
In addition, the movable part of the platform door device is set with an opening (frontage) dimension that provides an appropriate margin for the stopping conditions of the track vehicle depending on the presence or absence of a train automatic stop-position controller (TASC). Has been done.

As the platform door device, for example, as disclosed in Patent Document 1 below, there is a platform door device that employs a two-stage telescopic structure capable of storing the second slide door inside the first slide door. In this two-stage telescopic structure, the width direction (opening / closing direction) of the sliding door is divided into two, so that the lateral length (width) of the door pocket can be shortened. Therefore, since the mounting interval of the platform door device can be appropriately adjusted according to the number of entrances and exits of the track vehicle, it becomes easy to install the same number of opening and closing type entrances and exits corresponding to the entrances and exits of the track vehicle.

In the platform door device of Patent Document 1, the rack gear fixedly installed in the door pocket, the first-stage pinion gear attached to the first-stage door and fitted with the rack gear, and the first-stage pinion gear attached to the same rotating shaft as the first-stage pinion gear. A first-stage door and an endless belt drive mechanism configured by hanging a rotating belt, which is an endless string-shaped drive transmission member, between the drive side sheave and the driven side sheave. It is linked with the second door.

Japanese Unexamined Patent Publication No. 2016-120911

However, the platform door device of Patent Document 1 uses a rack gear, a pinion gear, or the like in order to link the first-stage door and the second-stage door. For structures using rack gears and pinion gears, it is necessary to provide long rack gears with the same length as the distance that the first stage door moves, which complicates the structure and makes the platform door device more complicated. There was a possibility that it would become heavy. In addition, the assembly work may be complicated because it is necessary to fix the long rack gear to the door pocket. Further, since it is necessary to accurately fit the rack gear and the pinion gear, the assembly work may be complicated from this point as well.

The present disclosure has been made in view of such circumstances, and an object of the present disclosure is to provide a platform door device capable of simplifying a structure, reducing the weight, and facilitating assembly.

In order to solve the above problems, the platform door device of the present disclosure adopts the following means.
The home door device according to one aspect of the present disclosure can be accommodated in a door pocket fixed to a platform and the door pocket, and enters and exits the door pocket from a first end portion in the width direction of the door pocket. A first door that is slidably supported with respect to the door pocket, a second door that can be accommodated in the door pocket and is slidably supported with respect to the first door, and a drive that slides the first door. A second folded portion provided on the first door, a second folded portion provided on the first door, and a second portion having one end opposite to the first folded portion. It is fixed at a position on the end side that does not move relative to the first door and the second door, and the other end is fixed to the second door, and the first end extends from the other end to the other end. A first linear portion provided so as to be folded back at one folding portion, and a position where one end is closer to the first end portion side than the second folding portion and does not move relative to the first door and the second door. The other end is fixed to the second door, and the second linear portion is provided so as to be folded back at the second folding portion from the one end to the other end.

According to the present disclosure, the structure of the platform door device can be simplified, the weight can be reduced, and the assembly can be facilitated.

It is a schematic front view which shows one Embodiment of the platform door device which concerns on this disclosure, and shows the state which the opening for getting on and off is opened. It is a top view of FIG. FIG. 3 is a cross-sectional view taken along the line III-III of FIG. FIG. 6 is a cross-sectional view taken along the line IV-IV of FIG. It is a schematic front view which shows the state which the opening for getting on and off is closed in the platform door device shown in FIG. It is a top view of FIG. FIG. 5 is a cross-sectional view taken along the line VII-VII of FIG. FIG. 5 is a cross-sectional view taken along the line VIII-VIII of FIG. It is a figure which shows the 1st modification of the platform door device shown in FIG. 1, and shows the cross-sectional view taken along the line IV-IV in FIG. It is a figure which shows the 1st modification of the platform door apparatus shown in FIG. 1, and shows the cross-sectional view taken along the line VIII-VIII in FIG. It is a schematic front view which shows the 2nd modification of the platform door device shown in FIG. 1, and shows the state which the opening for getting on and off is opened. It is a schematic front view which shows the 2nd modification of the platform door device shown in FIG. 1, and shows the state which the opening for getting on and off is closed. It is a top view of the state where the platform door device which concerns on this embodiment is installed on a platform, (a) shows the state which the opening is closed, and (b) is the state at the time of getting on and off with the opening open. FIG. 3 is a front view of the platform door device shown in FIG. 13 as viewed from the platform side.

Hereinafter, an embodiment of the platform door device according to the present disclosure will be described with reference to the drawings.
As shown in FIGS. 13 and 14, the platform door device (hereinafter referred to as “platform door”) 1 is a device installed on platform H in a station yard where passengers get on and off a track vehicle such as a train to protect passengers. is there. That is, the platform door 1 has a wall surface 2 erected on the platform H so as to block between the track side on which the track vehicle travels and the platform H side used for getting on and off passengers, and the wall surface 2 An opening 3 for getting on and off is formed in the platform screen doors 3 and opens and closes the opening 3 which serves as a passage for getting on and off the track vehicle.

Further, the platform door 1 has a configuration in which the two-stage telescopic door portion 30 housed in the door pocket 10 is slid by a drive mechanism 40 described later in order to open and close the opening 3 for getting on and off, and is a so-called two-stage telescopic platform. It is a door device. The door pocket 10 has a substantially rectangular parallelepiped shape, and its outer wall surface forms a part of the wall surface 2 together with the door portion 30.

In the platform door 1, when the opening for getting on and off is closed by the door portion 30, the wall surface 2 blocks the track side and the platform H side, so that passengers fall onto the track. In addition, it is possible to prevent passengers from coming into contact with the traveling track vehicle, and to protect passengers and ensure safety. Further, the platform door 1 is for passengers getting on and off the track vehicle in a state where the opening for getting on and off is opened by storing the door portion 30 in the door pocket 10. Can be used as a passage.

By the way, in the illustrated embodiment, the opening 3 is opened and closed by the door portion 30 which expands and contracts in two stages from the pair of left and right door pockets 10. Since the pair of door pockets 10 arranged on the left and right sides of the opening 3 and the door portion 30 and the drive mechanism 40 housed in each door pocket 10 have substantially the same basic configuration (specifically, the opening 3). (Because it is symmetrical with respect to the vertical plane passing through the center of the door), the configuration of the door portion 30 housed in one door pocket 10 will be described in detail in the following description, and the door portion 30 housed in the other door pocket 10 will be described in detail. The configuration of is omitted as appropriate.
Further, the door pocket 10 shown in FIGS. 13 and 14 expands and contracts the door portion 30 in two steps in both the left and right directions, but in the following description, the door portion 30 expands and contracts in two steps in one direction. When the door portion 30 is expanded and contracted in two steps in both the left and right directions, two sets of the same door portion 30 and the drive mechanism 40 may be installed by shifting them in the thickness direction of the door pocket 10, and are therefore limited to the illustrated configuration. Will not be done.

1 and 2 show the configuration of the door portion 30 and the drive mechanism 40 as an example of the internal configuration of the door pocket 10 constituting the platform door 1. A set of doors 30 housed in the door pocket 10 is expanded and contracted in two steps in the horizontal direction (wall surface direction) by the drive mechanism 40, and slides to open and close the opening 3 for getting on and off (also in FIGS. 5 and 6). reference).
The door pocket 10 is a hollow member having a substantially rectangular parallelepiped shape, and its bottom portion is fixedly supported by the platform H. Inside the door pocket 10, a two-stage telescopic door portion 30, which will be described later, and a drive mechanism 40 for opening and closing the door portion 30 are housed. Further, the outer wall surface of the door pocket 10 having a substantially rectangular parallelepiped shape is a part of the wall surface 2 that separates the track side and the platform H side together with the door portion 30 that opens and closes.

The door portion 30 has a two-stage telescopic structure consisting of a first-stage door (first door) 31 and a second-stage door (second door) 32. In the door portion 30, the first-stage door 31 slides in the first stage with respect to the door pocket 10, and the second-stage door 32 housed inside the first-stage door 31 becomes the first-stage door 31. On the other hand, by sliding in the second stage, the door as a whole expands and contracts in two stages to open and close.
That is, the first stage door 31 is slidably supported by the first slide support mechanism 33 with respect to the door pocket 10. Further, the second stage door 32 is slidably supported by the second slide support mechanism 36 with respect to the first stage door 31.

The first slide support mechanism 33 is fixedly installed on a pair of upper and lower first guide rails 34 provided on the inner wall surface of the door pocket 10 and on the side wall surface of the first stage door 31 so as to engage with the first guide rail 34. It is provided with a first slide portion 35 having a substantially U-shaped cross section. Each first guide rail 34 extends in the width direction of the door pocket 10. The first slide portion 35 and the first guide rail 34 allow relative movement in the width direction (extending direction of the first guide rail 34) between the first slide portion 35 and the first guide rail 34, and also allow relative movement in the width direction. Engages to regulate relative movement in the direction of intersection with. In this embodiment, two first slide portions 35 are provided for each of the first guide rails 34, and the first stage door 31 can be smoothly slid by engaging with each other.
The second slide support mechanism 36 is fixed to a pair of upper and lower second guide rails 37 provided on the side wall surface of the first stage door 31 and to the side wall surface of the second stage door 32 so as to engage with the second guide rail 37. It is provided with an installed second slide portion 38 having a substantially U-shaped cross section. Each second guide rail 37 extends in the width direction of the first stage door 31. The second slide portion 38 and the second guide rail 37 allow relative movement in the width direction (extending direction of the second guide rail 37) between the second slide portion 38 and the second guide rail 37, and also allow relative movement in the width direction. Engages to regulate relative movement in the direction of intersection with. In this embodiment, two second slide portions 38 are provided for each of the second guide rails 37, and the second stage door 32 can be smoothly slid by engaging with each other.

The drive mechanism 40 has a first-stage door drive unit 41 that slides the first-stage door 31 in the opening / closing direction with respect to the door pocket 10, and a second-stage door 32 that slides the second-stage door 32 in the opening / closing direction with respect to the first-stage door 31. It is composed of a two-stage door drive unit 50.

The first-stage door drive unit 41 is fixedly installed in the door pocket 10 and rotated by an electric motor (drive unit) (not shown), and both ends are fixed to the first-stage door 31 by the main drive sheave 42. It is a belt drive configured to include a fixed belt 43 of a string-shaped drive transmission member to be driven. In such a belt drive, examples of the string-shaped drive member suitable as the fixed belt 43 include a wire, a chain, and the like in addition to the timing belt. Reference numeral 44 in the drawing is an idler that supports the fixed belt 43 on both sides of the main drive sheave 42.

The electric motor is installed at an appropriate place in the door pocket 10, for example, near the bottom of the opening side where the door portion 30 enters and exits. A main drive sheave 42 for driving the fixed belt 43 is attached to the output shaft of the electric motor.
Both ends of the fixing belt 43 are fixed to, for example, the vicinity of the bottom end of the first stage door 31. The fixed belt 43 is in close contact with the main drive sheave 42 in a state of being wound around substantially half a circumference. Further, the fixed belt 43 is turned around 90 degrees along the bottom surface of the first stage door 31 via idlers 44 provided on both sides of the main drive sheave 42.
The first stage door drive unit 41 is not limited to the structure described above. The first-stage door drive unit 41 may have a structure using a rack gear and a pinion gear that meshes with the rack gear, as long as the first-stage door 31 can be slid. The structure may be a structure using a screwing slider.

Next, the second-stage door driving unit 50 will be described with reference to FIGS. 1 to 8. In the following description, among the widthwise ends of the door pocket 10, the end on the opening 3 side to be opened and closed by the platform door 1 is referred to as the tip (first end) 10a, which is opposite to the tip 10a. The end portion of the door is referred to as a base end portion (second end portion) 10b. Similarly, among the widthwise ends of the first stage door 31, the end on the opening 3 side is referred to as the tip 31a, and the end opposite to the tip 31a is referred to as the base end 31b. Similarly, among the widthwise ends of the second door 32, the end on the opening 3 side is referred to as the tip 32a, and the end opposite to the tip 32a is referred to as the base end 32b.

The second-stage door drive unit 50 is provided so as to be folded back by the first pulley (first folding portion) 51 and the second pulley (second folding portion) 52 provided in the first-stage door 31 and the first pulley 51. It has a first wire (first linear portion) 53 and a second wire (second linear portion) 54 provided so as to be folded back by the second pulley 52.

As shown in FIGS. 1 and 3, the first pulley 51 is provided on the inner surface of the first stage door 31 (the surface facing the space for accommodating the second stage door 32) via the first pulley bracket 55. It is fixed. The first pulley 51 is provided near the tip of the first stage door 31. The first pulley bracket 55 is a plate-shaped member having a substantially rectangular plate surface, one surface of which is fixed to the inner surface of the first stage door 31, and the other surface of which the first pulley 51 is fixed. The surface of the first pulley 51 that comes into contact with the first wire 53 is a smooth surface. That is, the first pulley 51 is not a so-called timing pulley, and no gear or the like is formed.

As shown in FIGS. 1 and 4, the second pulley 52 is provided below the first pulley 51 and on the base end portion 31b side of the first stage door 31. Specifically, the second pulley 52 is fixed to the bracket 56 for the second pulley that protrudes from the base end portion 31b of the first stage door 31 toward the base end portion 10b of the door pocket 10. That is, the second pulley 52 is arranged between the base end portion 31b of the first stage door 31 and the base end portion 10b of the door pocket 10 via the bracket 56 for the second pulley. The second pulley bracket 56 is a plate-shaped member having a substantially rectangular plate surface, one end of which is fixed to the base end portion 31b of the first stage door 31, and the second pulley 52 is fixed to the other end. .. The surface of the second pulley 52 that comes into contact with the second wire 54 is a smooth surface. That is, the second pulley 52 is not a so-called timing pulley, and no gear or the like is formed.

The first wire 53 is a metal wire member having a diameter of about 3 to 4 mm. The diameter of the first wire 53 and the raw material are not limited to this. The first wire 53 may have a diameter of 3 mm or less, or 4 mm or more, as long as it has a certain degree of flexibility and can withstand a predetermined load.
One end 53a of the first wire 53 is fixed to the base end portion 10b of the door pocket 10. The other end 53b of the first wire 53 is fixed to the base end portion 32b of the second stage door 32. Specifically, as shown in FIG. 4, the other end 53b of the first wire 53 is fixed to the base end portion 32b of the second stage door 32 via the wire bracket 57. The wire bracket 57 is a plate-shaped member that projects in the depth direction from the base end portion 32b of the second stage door 32, one end of which is fixed to the base end portion 32b of the second stage door 32, and the other end of which is the first. The other end 53b of the wire 53 is fixed.
Further, as described above, the first wire 53 is folded back by engaging with the first pulley 51 between one end 53a and the other end 53b. The first wire 53 is provided so that one end 53a is located above the other end 53b. That is, the first wire 53 is folded up and down by the first pulley 51.

A first tension adjusting portion 58 is provided at an intermediate position of the first wire 53. The first tension adjusting portion 58 is provided near one end 53a of the first wire 53. Specifically, in the first wire 53, it is provided between the base end portion 10b of the door pocket 10 and the base end portion 31b of the first stage door 31. The first tension adjusting unit 58 is capable of adjusting the tension of the first wire 53. As the first tension adjusting unit 58, for example, a turnbuckle is exemplified. The first wire 53 is adjusted to have a predetermined tension by the first tension adjusting unit 58. The predetermined tension is exemplified by a tension such that the first wire 53 does not loosen.

The second wire 54 is a metal wire member having a diameter of about 3 to 4 mm. The diameter of the second wire 54 and the raw material are not limited to this. The second wire 54 may have a diameter of 3 mm or less, or 4 mm or more, as long as it has a certain degree of flexibility and can withstand a predetermined load.
One end 54a of the second wire 54 is fixed to the tip portion 10a of the door pocket 10. The other end 54b of the second wire 54 is fixed to the base end portion 32b of the second stage door 32. That is, the fixed position of the other end 54b of the second wire 54 and the fixed position of the other end 53b of the first wire 53 are deviated in the depth direction. Further, as described above, the second wire 54 is folded back by engaging with the second pulley 52 between one end 54a and the other end 54b. The second wire 54 is provided so that one end 54a is located below the other end 54b. That is, the second wire 54 is folded up and down by the second pulley 52.

A second tension adjusting portion 59 is provided at an intermediate position of the second wire 54. The second tension adjusting unit 59 is provided near one end 54a of the second wire 54. The second tension adjusting unit 59 is capable of adjusting the tension of the second wire 54. As the second tension adjusting unit 59, for example, a turnbuckle is exemplified. The second wire 54 is adjusted to have a predetermined tension by the second tension adjusting unit 59. The predetermined tension is exemplified by a tension at which the second wire 54 does not loosen.

Next, the behavior of the platform door 1 will be described.
[When the opening 3 for getting on and off is closed]
When the first stage door 31 and the second stage door 32 are housed in the door pocket 10, the first stage door 31 slides out of the door pocket 10 by the driving force from the electric motor (in other words, the first stage door). When the 31 slides away from the base end portion 10b of the door pocket 10), the first pulley 51 fixed to the first stage door 31 also moves in the same direction. One end of the first wire 53 is fixed to a door pocket 10 that does not move relative to the first stage door 31. Therefore, with the sliding of the first stage door 31 (in other words, with the movement of the first pulley 51), the length from one end 53a of the first wire 53 to the first pulley 51 becomes longer. Since the total length of the first wire 53 is constant, when the length from one end 53a to the first pulley 51 becomes long, the length from the first pulley 51 to the other end 53b becomes relatively short. That is, the second stage door 32 to which the other end 53b of the first wire 53 is fixed approaches the first pulley 51 fixed to the first stage door 31. As a result, the second stage door 32 also slides in the same direction as the first stage door 31 in conjunction with the slide of the first stage door 31. At this time, the amount of movement of the first-stage door 31 and the amount of movement of the second-stage door 32 are equal to each other. In this way, the first-stage door 31 and the second-stage door 32 slide in the opening direction by a predetermined distance, so that the opening 3 for getting on and off is closed by the first-stage door 31 and the second-stage door 32. be able to.

[When the opening 3 for getting on and off is opened]
Further, when the first-stage door 31 and the second-stage door 32 are not housed in the door pocket 10, the first-stage door 31 is slid so as to be housed in the door pocket 10 by the driving force from the electric motor (in other words,). When the first-stage door 31 slides closer to the base end portion 10b of the door pocket 10), the second pulley 52 fixed to the first-stage door 31 also moves in the same direction. Since one end 54a of the second wire 54 is fixed to the door pocket 10 which does not move relative to the first stage door 31, the second wire 54 moves with the slide of the first stage door 31 (in other words, the movement of the second pulley 52). The length from one end 54a to the second pulley 52 becomes longer. Since the total length of the second wire 54 is constant, when the length from one end 54a to the second pulley 52 becomes long, the length from the second pulley 52 to the other end 54b becomes relatively short. That is, the second stage door 32 to which the other end 54b of the second wire 54 is fixed approaches the second pulley 52 fixed to the first stage door 31. As a result, the second stage door 32 also slides in the same direction as the first stage door 31 in conjunction with the slide of the first stage door 31. Further, the amount of movement of the first stage door 31 and the amount of movement of the second stage door 32 are equal to each other. In this way, the first-stage door 31 and the second-stage door 32 are accommodated in the door pocket 10 by sliding a predetermined distance in the closing direction. Therefore, the opening 3 for getting on and off can be opened.

According to this embodiment, the following effects are exhibited.
In the present embodiment, since the second stage door 32 can also be moved in conjunction with the movement of the first stage door 31, each door of the platform door 1 having the first stage door 31 and the second stage door 32 can also be moved. (The first stage door 31 and the second stage door 32) do not need to be provided with an electric motor. Therefore, since the number of electric motors can be reduced, the number of parts can be reduced and the configuration can be simplified.

In the present embodiment, the first wire 53 and the second wire 54 pull the second stage door 32 via the first pulley 51 and the second pulley 52 to form the first stage door 31 and the second stage door 32. Are linked. As a result, the structure can be simplified as compared with the structure in which the first stage door 31 and the second stage door 32 are interlocked by using a rack or a pinion gear. Therefore, the weight of the platform door 1 can be reduced and the assembly can be facilitated. Further, when engaging the first wire 53 and the second wire 54 with the corresponding pulleys, it is not necessary to perform precise alignment or the like. This allows the first wire 53 and the second wire 54 to be easily engaged with the corresponding pulley. Therefore, the assembly can be facilitated from this point as well.

Further, in the present embodiment, the first wire 53 is provided with the first tension adjusting unit 58, and the second wire 54 is provided with the second tension adjusting unit 59. As a result, the first wire 53 and the second wire 54 can be maintained in a state of having a predetermined tension. Therefore, the second stage door 32 can be suitably moved according to the movement of the first stage door 31.
Further, in the present embodiment, the first tension adjusting unit 58 is provided on the first wire 53. As a result, the tension of the first wire 53 can be adjusted by the first tension adjusting unit 58 in a state where the first wire 53 is fixed to the door pocket 10 or the like. Further, since the second tension adjusting unit 59 is provided on the second wire 54, the tension of the second wire 54 is adjusted by the second tension adjusting unit 59 in a state where the second wire 54 is fixed to the door pocket 10 or the like. be able to. Therefore, the tension of each wire can be easily adjusted, so that maintainability can be improved.

Further, in the present embodiment, one end 53a of the first wire 53 is fixed to the door pocket 10, and one end 54a of the second wire 54 is fixed to the door pocket 10. As a result, the platform door 1 can be unitized. The platform door 1 can be assembled at a place other than the actual site where the platform door 1 is installed (platform H in this embodiment). For example, when the first wire 53 and the second wire 54 are fixed to the platform H on the platform H, the work of fixing each wire on the platform H occurs, but in the configuration of the present embodiment, such work is performed. Does not occur. Therefore, the work at the site can be reduced, and the installation work can be simplified.

Next, a modification 1 of the platform door 1 according to the present embodiment will be described with reference to FIGS. 9 and 10.
[Modification 1]
The platform door 61 according to this modification is mainly different from the platform door 1 described in the above embodiment in that the first wire 53 and the second wire 54 are formed of one member (the same member). ing. Since other structures are substantially the same as those in the above embodiment, the same reference numerals are given and detailed description thereof will be omitted.

In this modification, as shown in FIGS. 9 and 10, the first wire 53 and the second wire 54 are formed of one wire. In the following description, one wire will be referred to as a third wire 62.
The third wire 62 conceptually connects the other end 53b of the first wire 53 and the other end 54b of the second wire 54 of the above embodiment. Therefore, one end 62a of the third wire 62 is fixed to the base end portion 10b of the door pocket 10 (the same position as the position where one end 53a of the first wire 53 of the above embodiment is fixed). Further, the other end 62b of the third wire 62 is fixed to the tip portion 10a of the door pocket 10 (the same position as the position where one end 54a of the second wire 54 of the above embodiment is fixed). Further, the third wire 62 is folded back by the first pulley 51 and the second pulley 52 between one end and the other end 62b. Further, the third wire 62 is fixed to the wire bracket 57 at an intermediate position between the first pulley 51 and the second pulley 52. That is, the third wire 62 connects the base end portion 10b of the door pocket 10 and the wire bracket 57 to the first portion 62c via the first pulley 51, and the wire bracket 57 and the tip portion 10a of the door pocket 10 to the second. It has a second portion 62d, which is connected via a pulley 52.

Even when a single wire is used as in this modification, the first-stage door 31 and the second-stage door 32 can be interlocked and slid as in the above embodiment. Further, in this modification, since the first stage door 31 and the second stage door 32 are interlocked with one wire (third wire 62), the parts are compared with the structure using two wires. The score can be reduced and the structure can be further simplified.

Next, a modification 2 of the platform door 1 according to the present embodiment will be described with reference to FIGS. 11 and 12.
[Modification 2]
The platform door 71 according to this modification is mainly different from the platform door 1 described in the above embodiment in the folding direction of the first wire 53 and the second wire 54. Since other structures are substantially the same as those in the above embodiment, the same reference numerals are given and detailed description thereof will be omitted. Note that, in FIGS. 11 and 12, the first tension adjusting unit 58 and the second tension adjusting unit 59 are omitted for the sake of illustration.

In this modification, as shown in FIGS. 11 and 12, the first wire 53 is provided so that the other end 53b is located above the one end 53a. That is, when one end 53a is the starting point, the first wire 53 is folded back from the upper side to the lower side in the first pulley 51. Further, the second wire 54 is provided so that the other end 54b is located below the one end 54a. That is, when one end 54a is the starting point, the second wire 54 is folded back from the lower side to the upper side in the second pulley 52. As described above, in the platform door 1 of the present modification, the other end 53b of the first wire 53 is fixed to the base end portion 32b of the second stage door 32, and the other end 54b of the second wire 54 is the second. The position fixed to the base end portion 32b of the step door 32 is separated in the vertical direction. Even in this configuration, the first-stage door 31 and the second-stage door 32 can be interlocked and slid as in the above embodiment.

The present disclosure is not limited to the above embodiment, and can be appropriately modified without departing from the gist thereof.
For example, in the above embodiment, an example in which one end 53a of the first wire 53 is fixed to the base end portion 10b of the door pocket 10 has been described, but the present disclosure is not limited to this. One end 53a of the first wire 53 is provided at a position where it does not move relative to the first stage door 31 and the second stage door 32, and at a position closer to the base end portion 10b than the first pulley 51. Just do it. Therefore, it may be fixed to any of the door pockets 10 between the base end portion 10b and the first pulley 51. Further, it does not have to be fixed to the door pocket 10, and may be fixed to the platform H, for example.
Further, one end 54a of the second wire 54 is also provided at a position where it does not move relative to the first stage door 31 and the second stage door 32, and at a position closer to the tip portion 10a than the second pulley 52. I just need to be there. Therefore, it may be fixed to any of the door pockets 10 between the tip portion 10a and the second pulley 52. Further, it does not have to be fixed to the door pocket 10, and may be fixed to the platform H, for example.

Further, in the above embodiment, an example in which the first wire 53 and the second wire 54 are used to connect the door pocket 10 and the second stage door 32 has been described, but the present disclosure is not limited to this. The member connecting the door pocket 10 and the second door 32 may be a long member having a certain degree of flexibility and capable of withstanding a predetermined load. For example, a string-shaped member such as a rope or a string-shaped member may be used. It may be a band-shaped member such as a belt or a chain-shaped member such as a chain.

Further, in the above embodiment, an example in which the pulley is applied as a member to be engaged when the first wire and the second wire are folded back has been described, but the present disclosure is not limited to this. Instead of the pulley, a rod-shaped member having low frictional resistance may be used.

Further, in the above embodiment, the platform door of the two-stage telescopic type has been described, but the present disclosure may be applied to the platform door of the other-stage telescopic type having two or more stages.

The platform door device described in the present embodiment described above is grasped as follows, for example.

The home door device according to one aspect of the present disclosure includes a door pocket (10) fixed to the platform (H) and a first end portion (10a) that can be accommodated in the door pocket and is one end in the width direction of the door pocket. A first door (31) that goes in and out of the door pocket and is slidably supported with respect to the door pocket, and a first door that is accommodated in the door pocket and slidably supported with respect to the first door. Two doors (32), a drive unit for sliding the first door, a first folding unit (51) provided on the first door, and a second folding unit (52) provided on the first door. At a position where one end (53a) is on the second end (10b) side opposite to the first end of the first turn and does not move relative to the first door and the second door. A first linear portion (53) which is fixed and the other end (53b) is fixed to the second door and is provided so as to be folded back at the first folding portion from the one end to the other end, and one end. (54a) is fixed at a position that is closer to the first end portion than the second folding portion and does not move relative to the first door and the second door, and the other end (54b) is the second door. It is provided with a second linear portion (54) which is fixed to the door and is provided so as to be folded back at the second folding portion from one end to the other end.

In the above configuration, when the first door and the second door are housed in the door pocket, the first door slides out of the door pocket by the driving force from the driving unit (in other words, the first door is the first door of the door pocket). (Sliding away from the two ends), the first folding part fixed to the first door also moves. The first linear portion is fixed at a position where one end does not move relative to the first door. Therefore, the length from one end to the first folding portion increases with the sliding of the first door (in other words, with the movement of the first folding portion). Since the total length of the first linear portion is constant, the longer the length from one end to the first folded portion, the shorter the length from the first folded portion to the other end. That is, the second door to which the other end of the first linear portion is fixed approaches the first folding portion fixed to the first door. As a result, the second door also slides out of the door pocket in conjunction with the slide of the first door.
Further, when the first door and the second door are not housed in the door pocket, the first door is slid so as to be housed in the door pocket by the driving force from the driving unit (in other words, the first door is housed in the door pocket). (Sliding closer to the second end), the second folding part fixed to the first door also moves. Since one end of the second linear portion is fixed at a position where it does not move relative to the first door, one end of the second linear portion (in other words, with the movement of the second folding portion) as the first door slides. The length from to the second turn-back part becomes longer. Since the total length of the second linear portion is constant, the longer the length from one end to the second folded portion, the shorter the length from the second folded portion to the other end. That is, the second door to which the other end of the second linear portion is fixed approaches the second folding portion fixed to the first door. As a result, in conjunction with the slide of the first door, the second door also slides so as to be accommodated in the door pocket.
As described above, in the above configuration, the second door can be moved in conjunction with the movement of the first door. Therefore, even in the platform door device having the first door and the second door, a drive unit is provided for each door. No need. Therefore, since the number of drive units can be reduced, the number of parts can be reduced and the configuration can be simplified.
Further, in the above configuration, the first linear portion and the second linear portion pull the second door through the first folding portion and the second folding portion to link the first door and the second door. ing. As a result, the structure can be simplified as compared with the structure in which the first door and the second door are interlocked by using a rack or a pinion gear. Therefore, the weight of the platform door device can be reduced and the assembly can be facilitated. Further, since the first linear portion and the second linear portion are linear members, it is not necessary to perform precise alignment or the like when engaging with the corresponding pulley. Thereby, the first linear portion and the second linear portion can be easily engaged with the corresponding pulley. Therefore, the assembly can be facilitated from this point as well.
Examples of the members constituting the first linear portion and the second linear portion include a string-shaped member such as a rope and a wire, a band-shaped member such as a belt, and the like. Further, the positions that do not move relative to the first door and the second door include, for example, a predetermined position of the door pocket, a predetermined position of the platform, and the like.

Further, in the platform door device according to one aspect of the present disclosure, the first linear portion and the second linear portion are formed of one member.

In the above configuration, the first linear portion and the second linear portion are formed of one member. As a result, the number of parts can be reduced and the structure can be further simplified.

Further, in the platform door device according to one aspect of the present disclosure, the first linear portion is provided with a first tension adjusting portion (58) for adjusting the tension of the first linear portion, and the first linear portion is provided. The two linear portions are provided with a second tension adjusting portion (59) for adjusting the tension of the second linear portion.

In the above configuration, the first linear portion is provided with the first tension adjusting portion, and the second linear portion is provided with the second tension adjusting portion. As a result, it is possible to maintain a state in which the first linear portion and the second linear portion have a predetermined tension. Therefore, the second door can be suitably moved according to the movement of the first door.
Further, in the above configuration, each tension adjusting portion is provided in each linear portion. As a result, the tension of each linear portion can be adjusted by each tension adjusting portion in a state where the first linear portion and the second linear portion are fixed at predetermined fixing positions. Therefore, the tension of each linear portion can be easily adjusted, so that maintainability can be improved.

Further, in the platform door device according to one aspect of the present disclosure, one end of the first linear portion is fixed to the door pocket, and the one end of the second linear portion is fixed to the door pocket. There is.

In the above configuration, one end of the first linear portion is fixed to the door pocket, and one end of the second linear portion is fixed to the door pocket. As a result, the platform door device can be unitized. The platform door device can be assembled at a place other than the actual site where the platform door device is installed. Therefore, the work at the site can be reduced, and the installation work can be simplified.

1: Platform door (platform door device)
2: Wall surface 3: Opening 10: Door pocket 10a: Tip (first end)
10b: Base end (second end)
30: Door 31: 1st stage door (1st door)
31a: Tip portion 31b: Base end portion 32: Second stage door (second door)
32a: Tip portion 32b: Base end portion 33: First slide support mechanism 34: First guide rail 35: First slide portion 36: Second slide support mechanism 37: Second guide rail 38: Second slide portion 40: Drive Mechanism 41: 1st stage door drive unit 42: Main drive sheave 43: Fixed belt 44: Idler 50: 2nd stage door drive unit 51: 1st pulley (1st folding part)
52: 2nd pulley (2nd folding part)
53: 1st wire (1st linear part)
53a: One end 53b: The other end 54: Second wire (second linear portion)
54a: One end 54b: The other end 55: Bracket for the first pulley 56: Bracket for the second pulley 57: Wire bracket 58: First tension adjusting part 59: Second tension adjusting part 61: Platform door 62: Third wire 62b: The other end 62c: 1st part 62d: 2nd part 71: Platform door

Claims (4)

The door pocket fixed to the platform and
A first door that can be accommodated in the door pocket, enters and exits the door pocket from the first end portion that is one end in the width direction of the door pocket, and is slidably supported with respect to the door pocket.
A second door that can be accommodated in the door pocket and is slidably supported with respect to the first door.
The drive unit that slides the first door and
The first folding part provided on the first door and
The second folding part provided on the first door and
One end is fixed to the second end side opposite to the first end portion from the first folding portion and does not move relative to the first door and the second door, and the other end is fixed. A first linear portion fixed to the second door and provided so as to be folded back at the first folding portion from one end to the other end.
One end is fixed to the first end side of the second folded portion and does not move relative to the first door and the second door, and the other end is fixed to the second door. A platform door device including a second linear portion provided so as to be folded back at the second folding portion from one end to the other end. The platform door device according to claim 1, wherein the first linear portion and the second linear portion are formed of one member. The first linear portion is provided with a first tension adjusting portion for adjusting the tension of the first linear portion.
The platform door device according to claim 1 or 2, wherein the second linear portion is provided with a second tension adjusting portion for adjusting the tension of the second linear portion. One end of the first linear portion is fixed to the door pocket.
The platform door device according to any one of claims 1 to 3, wherein one end of the second linear portion is fixed to the door pocket.

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