JP7409824B2 - Platform door device - Google Patents

Description

The present invention relates to a platform door device.

In recent years, platform door devices have been installed on railway platforms to further improve safety. The platform door device remains closed until the train enters the platform, and restricts the movement of passengers from the platform side of the platform door device to the track side. When the train stops at a predetermined location on the platform, the platform door device opens to allow passengers to board and exit the train.

Among platform door devices, a platform door device is known in which the position of the door can be changed in accordance with the number and type of train cars (for example, Patent Document 1).

Japanese Patent Application Publication No. 2011-51471

When installing a waist-high platform door like the one disclosed in Patent Document 1, it is necessary to embed various devices in the floor of the platform, making the installation work complicated.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a platform door that can reduce the burden of construction work on the platform floor.

The present invention provides a first door that is movable in the longitudinal direction of the platform along a guide at the top of the opening, a first drive source provided at the top of the opening that drives the first door, and a first door that is movable together with the first door. a second door and a third door that are movable with respect to the first door; a second drive source that is provided on the top of the first door and that drives the second door; and a second drive source that drives the third door. 3 drive sources.

According to such a configuration, by providing the first drive section above the opening, the burden of construction on the floor of the platform can be reduced.

FIG. 2 is a front view of the platform door device according to the embodiment. It is a front view of the platform door device. It is a front view of the platform door device. It is a front view of the door unit of the same platform door apparatus. It is a side view of the same door unit. It is a top view of the same door unit. It is a front view of the same door unit. FIG. 2 is a schematic front view of the platform door device. It is a side sectional view of the same platform door device. FIG. 7 is a front view of a platform door device according to a modified example. FIG. 3 is a top view of the platform door device.

Embodiments of the present invention will be described below. The platform door device according to the embodiment is installed, for example, on a train platform. The platform door device is normally in a closed state (closed state), and after the train arrives at the platform, it shifts to an open state (open state) in an appropriate form depending on the position of the door of the train car. Note that in the following embodiments, detailed explanations will be given using predetermined three-dimensional orthogonal coordinates as necessary. The X-axis of the three-dimensional orthogonal coordinates extends along the direction in which people enter and exit the platform door device. The Y axis of the three-dimensional orthogonal coordinates extends along the opening/closing direction of the platform door or the direction in which the platform extends. The Z axis of the three-dimensional orthogonal coordinates extends along the vertical direction.

Furthermore, although the platform door device according to the embodiment includes three types of doors: a first door, a second door, and a third door, the word "first" is added to the members mainly related to the first door. , the word "second" is attached to a member mainly related to the second door, and the word "third" is attached to a member mainly related to the third door.

The platform door device extends over substantially the entire length of a train platform extending in a predetermined direction, and separates a track side on which train tracks are laid and a platform side. By separating the track side and the platform side with a platform door device, a person cannot go from the platform side to the track side when the platform door device is in a closed state. The platform door device is a so-called full-screen platform door device, and has a total length in the vertical direction or a height from the floor of the platform to a position that is at least higher than a person's height.

FIG. 1 is a front view of the platform door device as seen along the X axis. As shown in FIG. 1, the platform door device 10 includes a plurality of door units 12 and a header box 14 in which parts for driving the door units 12 are housed. The platform door device 10 also includes a rail 16 embedded in the floor of the platform along the Y axis. The header box 14 is fixed to a beam near the ceiling of the platform where the platform door device 10 is installed. Furthermore, when installing the platform door device 10, a frame structure having a predetermined opening and consisting of a combination of beams and columns may be installed on the platform, and the header box 14 may be fixed to the beam.

2 and 3 are front views of the platform door device in a predetermined open state. FIG. 2 shows a state in which, for example, when a vehicle having four doors on one side stops on the platform 18, the doors of the platform door device 10 are opened in correspondence with the positions of the doors of the vehicle. FIG. 3 shows a state in which, for example, when a vehicle having three entrance/exit doors on one side stops on the platform 18, the doors of the platform door device 10 are opened corresponding to the positions of the doors of the vehicle. As shown in FIGS. 2 and 3, the platform door device 10 controls the open state of the door unit 12 using a drive mechanism in the header box 14, etc. according to the form of the vehicle that has arrived at the platform, and Controls the position of the unit 12. When the door opens, a plurality of openings are formed defined by both ends of the door, the lower end of the header box 14, and the floor of the platform. In the illustrated example, five door units are shown, but the number of door units 12 may be one or more, depending on the length of the platform 18 and the form of the arriving vehicle (particularly the number of door units of the vehicle). It will be easy to understand that it can be changed as appropriate depending on the number and position. In addition, the length of the illustrated platform door device 10 in the Y-axis direction corresponds to the length of one vehicle, and a plurality of platform door devices 10 are Can be connected along the axis.

As can be seen from FIGS. 1 to 3, in the platform door device, the position and form of the door unit 12 can be changed in accordance with the position of the entrance/exit door of the vehicle. In order to achieve this, the movement stroke of the door unit 12 of the platform door device in the Y-axis direction is made relatively large. When the movement stroke of the door units 12 is increased in this manner, the movable ranges of adjacent door units 12 overlap in the Y-axis direction. Although detailed description will be given later, the platform door device according to the embodiment is configured so that the wiring systems of the door units 12 do not interfere even if the movement strokes of the door units 12 overlap.

FIG. 4 is a front view of the door unit, with the second door in a closed state. FIG. 5 is a side view of the door unit, and FIG. 6 is a top view of the door unit. Further, FIG. 7 is a front view of the door unit, with the second door in an open state. 4 and 7 are views of the door unit as viewed from the platform side toward the track side. As shown in FIGS. 4 to 7, the door unit 12 according to the embodiment includes a first door 20, and a second door 22A and a third door 22B that are different sliding doors with respect to the first door 20.

The first door 20 moves along the rail 16 on the rail 16 extending along the Y axis. The first drive unit that drives the first door 20 will be described later.

The configuration of the door unit 12 will be described below with reference to FIGS. 4 to 7. The second door 22A and the third door 22B are movable in the Y-axis direction similarly to the first door 20. More specifically, the second door 22A and the third door 22B are movable in the Y-axis direction with respect to the first door 20 within a predetermined width along the Y-axis, and are movable in the Y-axis direction together with the first door 20. Move to. The second door 22A and the third door 22B are in the form of double sliding doors with respect to the first door 20, and are arranged at positions shifted from the first door 20 in the +X direction. In the illustrated example, the first door 20, second door 22A, and third door 22B are placed inside the rail 16 on the platform 18 in the order from the -X direction side (platform side) to the +X direction side (track side). will be placed in

The movable range of the second door 22A and the third door 22B is determined with the first door 20 as a reference. Specifically, the second door 22A and the third door 22B are in an open state in which an opening is formed in the platform door device 10 overlapping the first door 20 when viewed along the It moves between a closed state in which the door is lined up adjacent to the first door 20 when viewed along the line. The second door 22A and the third door 22B have independent drive units (hereinafter, for clarity, the drive unit of the second door 22A is referred to as the “second drive unit 24A”, and the drive unit of the third door 22B is referred to as the “second drive unit 24A”). 3 drive unit 24B").

The second drive unit 24A that drives the second door 22A is driven by a drive motor for the second door 22A (hereinafter simply referred to as "second drive motor 26A" for clarity) and a second drive motor 26A. a timing belt that guides the second timing belt 28A (hereinafter simply referred to as "second driven pulley 30A" for clarity), and a driven pulley that guides the second timing belt 28A (hereinafter simply referred to as "second driven pulley 30A" for clarity). , a guide rail (hereinafter simply referred to as "second guide rail 32A") fixed to the second door 22A. A second drive unit 24A including a second drive motor 26A, a second timing belt 28A, a second driven pulley 30A, and a second guide rail 32A is provided on the first door 20 and moves together with the first door 20. Here, the second drive section 24A being provided on the first door 20 means that the second drive section 24A is provided so as to be movable along the Y-axis at least together with the first door 20. Therefore, when at least a part of the second drive section 24A is built into the first door 20, and when the second drive section 24A is provided outside the first door 20 but moves together at least along the Y axis. It can be assumed that the second drive unit 24A is provided in the first door 20.

The second drive motor 26A is fixed to the top of the first door 20. A second timing belt 28A is spanned over the second drive motor 26A, and the second timing belt 28A is driven by driving the second drive motor 26A. A portion of the second timing belt 28A other than the portion spanned over the second drive motor 26A extends parallel to the Y-axis along the second guide rail 32A. The second timing belt 28A extends between a pair of second driven pulleys 30A, and includes a portion spanned over the second drive motor 26A via the second driven pulley 30A and a portion extending parallel to the Y axis. The direction of extension on the XY plane is reversed between the two. Both ends of the second timing belt 28A are fixed to both ends of the second guide rail 32A, respectively. The second guide rail 32A is provided with a bracket for the second drive section 24A (hereinafter simply referred to as "second bracket 34A" for clarity) so as not to move in the X-axis direction and the Z-axis direction with respect to the first door 20. Supported by The second drive unit 24A includes two second brackets 34A, and each second bracket 34A is arranged at both ends of the first door 20 in the width direction. The second guide rail 32A is movable along the Y-axis relative to the first door 20 by the driving force of the second drive motor 26A. The second guide rail 32A has substantially the same width (length along the Y axis) as the first door 20. The upper part of the second door 22A is fixed to the second guide rail 32A, and the lower part slides along the rail 16 on the platform 18. The second door 22A is basically supported above (+Z direction side) by the second guide rail 32A and suspended from the second guide rail 32A, and the rail 16 is arranged so that the lower end of the second door 22 does not swing. It merely provides support in the plane direction (±X direction) of the second door 22A. When the second drive motor 26A is driven, the second guide rail 32A moves relative to the first door 20 along the Y axis.

By driving the second door 22A with the second drive section 24A using the second timing belt 28A in this manner, positioning of the second door 22A becomes easy. For example, if an attempt is made to move the second door 22A using a ball screw or the like without using a timing belt, it may be extremely difficult to adjust the gap between adjacent doors along the X axis. On the other hand, by using a structure in which the second door 22 is suspended using the second timing belt 28A, the degree of freedom in adjusting the gap between the doors increases, and the task of reducing the gap becomes easier.

The length of the second guide rail 32 along the Y axis is longer than the width of the second door 22 and is approximately the same as the width of the first door 20. One end of the second guide rail 32 along the Y axis extends to a position that coincides with one end of the second door 22. The other end of the second guide rail 32 along the Y axis extends beyond the other end of the second door 22A. When the second door 22A is in the closed state, the vicinity of the other end of the second guide rail 32A is located close to the second drive motor 26A. On the other hand, when the second door 22A is in the open state, one end of the second guide rail 32A is located close to the second drive motor 26A. Therefore, the movement stroke of the second guide rail 32A corresponds to the width of the second door 22A. When the second guide rail 32A moves, the second door 22A moves along the Y-axis with respect to the first door 20.

The third drive section 24B that drives the third door 22B has substantially the same configuration as the second drive section 24A. The third drive unit 24B includes a drive motor for the third door 22B (hereinafter simply referred to as "third drive motor 26B" for clarity) and a timing belt (hereinafter referred to as "third drive motor 26B" for clarity) driven by the third drive motor 26B. (hereinafter simply referred to as "third timing belt 28B" for clarity), a driven pulley that guides the third timing belt 28B (hereinafter simply referred to as "third driven pulley 30B" for clarity), and fixed to the third door 22B. (hereinafter simply referred to as "third guide rail 32B"). A third drive unit 24B including a third drive motor 26B, a third timing belt 28B, a third driven pulley 30B, and a third guide rail 32B is provided on the first door 20 and moves together with the first door 20. Here, the expression that the third drive section 24B is provided on the first door 20 means that the third drive section 24B is provided so as to be movable along the Y-axis at least together with the first door 20. Therefore, when at least a part of the third drive section 24B is built into the first door 20, and when the third drive section 24B is provided outside the first door 20 but moves together at least along the Y axis. It can be assumed that the third drive section 24B is provided in the first door 20.

The third drive motor 26B is fixed to the top of the first door 20. A third timing belt 28B is spanned over the third drive motor 26B, and the third timing belt 28B is driven by driving the third drive motor 26B. A portion of the third timing belt 28B other than the portion spanned over the third drive motor 26B extends parallel to the Y-axis along the third guide rail 32B. The third timing belt 28B extends between a pair of third driven pulleys 30B, and includes a portion spanned over the third drive motor 26B via the third driven pulley 30B and a portion extending parallel to the Y axis. The direction of extension on the XY plane is reversed between the two. Both ends of the third timing belt 28B are fixed to both ends of the third guide rail 32B, respectively. The third guide rail 32B is provided with a bracket for the third drive section 24B (hereinafter simply referred to as "third bracket 34B" for clarity) so as not to move in the X-axis direction and the Z-axis direction with respect to the first door 20. Supported by The third drive unit 24B includes two third brackets 34B, and each third bracket 34B is arranged at both ends of the first door 20 in the width direction. The third guide rail 32B is movable along the Y-axis relative to the first door 20 by the driving force of the third drive motor 26B. The third guide rail 32B has substantially the same width (length along the Y axis) as the first door 20. The upper part of the third door 22B is fixed to the third guide rail 32B, and the lower part slides along the rail 16 on the platform 18. The third door 22B is basically supported upward (on the +Z direction side) by the third guide rail 32B and is suspended from the third guide rail 32B, and the rail 16 is arranged so that the lower end of the third door 22 does not swing. It merely provides support in the plane direction (±X direction) of the third door 22B. When the third drive motor 26B is driven, the third guide rail 32B moves with respect to the first door 20 along the Y axis.

By driving the third door 22B with the third driving section 24B using the third timing belt 28B in this manner, positioning of the third door 22B becomes easy. By using a structure in which the third door 22B is suspended using the third timing belt 28B, the degree of freedom in adjusting the gap between the doors increases, and the task of reducing the gap becomes easier.

The length of the third guide rail 32B along the Y axis is longer than the width of the third door 22B and is approximately the same as the width of the first door 20. One end of the third guide rail 32B along the Y axis extends to a position that coincides with one end of the third door 22. The other end of the third guide rail 32B along the Y axis extends beyond the other end of the third door 22B. When the third door 22B is in the closed state, the vicinity of the other end of the third guide rail 32B is located close to the third drive motor 26B. On the other hand, when the third door 22B is in the open state, one end of the third guide rail 32B is located close to the third drive motor 26B. Therefore, the movement stroke of the third guide rail 32B corresponds to the width of the third door 22B. When the third guide rail 32B moves, the third door 22B moves along the Y-axis with respect to the first door 20.

The second guide rail 32A and the third guide rail 32B of the second drive unit 24A and the third drive unit 24B are offset from each other with respect to at least one of the vertical direction (Z-axis direction) and the horizontal direction (X-axis direction). has been done. Here, being offset means moving along at least one of the X-axis and the Z-axis so that members that move along the Y-axis and have overlapping movement areas along the Y-axis do not come into contact with each other when the door unit 12 is operated. It means that it deviates along the line. The distance by which the members are shifted can be freely set depending on the shape of the members and the like. By offsetting the second guide rail 32A and the third guide rail 32B, it is possible to prevent the second guide rail 32A and the third guide rail 32B from interfering with each other in the open state. Moreover, since it is preferable that the second guide rail 32A, the third guide rail 32B, the second drive motor 26A, and the third drive motor 26B be provided on the same XY plane, the second The drive motor 26A and the third drive motor 26B of the third drive section 24B are also vertically offset from each other. Further, the second drive motor 26A and the third drive motor 26B are not offset in the X-axis direction when viewed from above, but the second drive motor 26A and the third drive motor 26B are connected to the second guide rail 32A and the third guide rail 32B, the second timing belt 28A and the The three timing belts 28B are offset in the X-axis direction on the XY plane. This prevents interference between the second guide rail 32A and the third guide rail 32B and interference between the second timing belt 28A and the third timing belt 28B when the second door 22A and the third door 22B are in the open state. can.

When driving the second door 22A, the second timing belt 28A is driven by driving the second drive motor 26A, and the second guide rail 32A is moved along the Y axis. Thereby, the second door 22A fixed to the second guide rail 32A moves along the Y-axis together with the second guide rail 32A. In this case, the second door 22A may be moved between the open state and the closed state, or may be stopped, for example, between the open state and the closed state. When driving the third door 22B, the same control as when driving the second door 22A is performed.

FIG. 8 is a schematic front view of the platform door device, and FIG. 9 is a side sectional view of the platform door device. FIG. 8 shows an exploded state in which the casing of the header box 14 is removed and each member is shifted along the Z-axis as necessary to facilitate understanding. Therefore, each member shown in an exploded state is actually accommodated within the header box 14 as shown in FIG. As shown in FIGS. 8 and 9, each door unit 12 includes a first drive section 36 for moving the door unit 12 along the Y-axis. The first drive unit 36 includes a drive motor for the door unit 12 (hereinafter simply referred to as "first drive motor 38" for clarity) as a first drive source. The first drive unit 36 also has a driven pulley paired with the first drive motor 38 (hereinafter simply referred to as "first driven pulley 40" for clarity), the first drive motor 38 and the first driven pulley 40 are connected to each other. A timing belt (hereinafter simply referred to as "first timing belt 42" for clarity) is provided.The first drive unit 36 is fixed to the header box 14, It does not move along the Y-axis like the drive unit 24. In the illustrated example, the first drive motor 38 and the first driven pulley 40 are arranged at a distance along the Y-axis, and this distance is the distance between the door unit and the first driven pulley 40. This corresponds to 12 travel strokes.

The first door 20 is basically supported above (+Z direction side) by a first timing belt 42 provided at the top of the opening, and is movable along the first timing belt 42 in the width direction of the opening. be. In this embodiment, the first timing belt 42 constitutes a guide. The rail 16 merely provides support in the plane direction (±X direction) of the first door 20 so that the lower end of the first door 20 does not swing. By supporting the first door 20 with the first timing belt 42 of the first drive unit 36, a certain amount of play can be given to the position of the first door 20 in the surface direction. Thereby, the gap between the first door 20 and the second door 22 can be adjusted without strictly positioning the first door 20 with respect to the second door 22. Furthermore, since one surface of the first door 20 (the surface on the -X direction side) is always visible from the platform side, a display means such as a liquid crystal display may be provided on this surface.

The first drive section 36 will be explained in more detail below. The first drive section 36 includes a first drive section bracket (hereinafter simply referred to as "first bracket 44" for clarity) that is driven along the Y-axis by the first timing belt 42. The first bracket 44 is fixed to two second brackets 34 fixed to the upper part of the first door 20. As a result, the first door 20 moves along the Y-axis as the first bracket 44 moves along the Y-axis. The first drive unit 36 further includes a cable bear ( (registered trademark) 46. The movement stroke of the cable carrier (registered trademark) 46 corresponds to the movement stroke of the door unit 12. In FIG. 8, the solid line with reference numeral 46 is the cableveyor (registered trademark) 46, and the broken line drawn adjacent to each cableveyor (registered trademark) 46 is the cableveyor (registered trademark). Indicates operating status. The movable range of each cable bear (registered trademark) 46 substantially corresponds to the movement stroke of the door unit. A cable (not shown) extends from the moving end of the cable bear (registered trademark) 46 toward the second drive section 24A and the third drive section 24B. Therefore, the moving end of the cable bear (registered trademark) 46 is fixed near the second drive motor 26A and the third drive motor 26B by the support rod 48 extending along the move along the Y axis. On the other hand, the fixed end of the cable carrier (registered trademark) 46 is preferably located approximately at the center in the length direction of the movement stroke of the first door 20.

In the illustrated example, the platform door device 10 includes five door units 12, and thus includes five first drive units 36 corresponding to the number of door units 12. As described above, in order to improve the degree of freedom in the arrangement of the door unit 12 of the platform door device 10, the movement stroke of the door unit 12 is relatively large. When the movement stroke of the door unit 12 is large, the movement stroke of the door unit 12 overlaps with the movement stroke of an adjacent door unit. Each door unit 12 has a first drive section 36, a second drive section 24A, and a third drive section 24B. Therefore, when the movement strokes of adjacent door units 12 overlap, the cable carrier (registered trademark) 46 of the first drive unit 36, the wiring supported by the cable carrier (registered trademark) 46, and the first timing belt 42 are This may interfere with the wiring of the first drive unit 36 and the first timing belt 42 . In order to prevent interference, the positions of the cable bear (registered trademark) 46 of the first drive unit 36 and the first timing belt 42 in the XZ cross section are offset in at least one of the ±X direction and the ±Z direction. It is preferable. In the illustrated example, the movement strokes of all adjacent first doors 20 overlap. Therefore, the positions of the cableveyor (registered trademark) 46 of the adjacent first drive unit 36 and the first timing belt 42 in the XZ cross section are offset in at least one of the ±X direction and the ±Z direction. On the other hand, between the door units 12 in which the movement strokes of the first doors 20 do not overlap, the positions of the cable bear (registered trademark) 46 and the first timing belt 42 in the XZ cross section may overlap.

In the illustrated example, the first first door 20A, the third first door 20C, and the fifth first door 20E counting from the -Y side (hereinafter simply referred to as "odd-numbered first doors") (sometimes collectively referred to as ) do not overlap. Therefore, the cable carriers (registered trademark) 46A, 46C, 46E and the first timing belts 42A, 42C, 42E of these three first doors 20 are arranged at the same position in the XZ cross section. On the other hand, the movement stroke of the second first door 20B overlaps with the movement stroke of the first first door 20A, the third first door 20C, and the fourth first door 20D. The movement stroke of the first door 20D overlaps with the movement strokes of the second, third, and fifth first doors 20B, 20C, and 20E. The position of the first timing belt 42B of the second first door 20B in the XZ cross section is offset in the -X direction with respect to the first timing belts 42A, 42C, 42E of the odd-numbered first doors 20A, 20C, 20E. has been done. Further, the position of the first timing belt 42D of the fourth first door 20D in the XZ cross section is in the -X direction with respect to the first timing belts 42A, 42C, 42E of the odd-numbered first doors 20A, 20C, 20E. and offset in the -Z direction. As the position of the first timing belt 42 is offset, the position of the first drive motor 38 is similarly offset.

Furthermore, if the movement strokes of the first door 20 overlap, the adjacent Cableveyor (registered trademark) 46 and even the wiring supported by the Cableveyor (registered trademark) 46 may interfere in the Y-axis direction. This can be easily understood from the fact that the movement strokes of the cable carrier (registered trademark) 46 shown by broken lines in FIG. 8 overlap along the Y axis. Furthermore, if the support rods 48 connecting the moving end and the second drive motor 26A or the third drive motor 26B of adjacent cable carriers (registered trademark) 46 are at the same height in the Z-axis direction, the support rods 48 interferes with the movement range of the cable carrier (registered trademark) 46. Therefore, adjacent cable carriers (registered trademark) 46 are also offset in the Z-axis direction. In this case, for example, the cable carriers (registered trademark) 46A, 46C, 46E of the odd-numbered first doors 20A, 20C, 20E are installed on the floor of the header box 14, and the cable carriers (registered trademark) of the remaining first doors 20B, 20D are installed on the floor of the header box 14. (registered trademark) 46B and D can be offset in the -X direction and +Z direction.

A first drive section 36, a second drive section 24A, and a third drive section 24B are built into the header box 14. The arrangement of each part in the header box 14 having a rectangular cross section is particularly as shown in FIG. 36 is preferably located at the top. The second drive unit 24A and the third drive unit 24B are arranged near the second door 22A and the third door 22B in the Z-axis direction and the X-axis direction in order to move together with the second door 22A and the third door 22B, respectively. good. Therefore, the second drive section 24A and the third drive section 24B are arranged below the header box 14 and on the track side. Furthermore, the cable carrier (registered trademark) 46 is arranged on the floor surface of the header box 14, and therefore is arranged at the lower part of the header box 14. Further, it is preferable to arrange the cable carrier (registered trademark) 46 on the home side so that the cable carrier (registered trademark) 46 does not interfere with the second drive section 24A and the third drive section 24B. Further, by arranging the first drive motor 38 at the upper part, the maintainability of the first drive motor 38 can be improved. As described above, there are three positions where the first drive motor 38 is arranged when viewed in the XZ cross section. Among these, for example, the first drive motors 38A, 38C, 38E of the odd-numbered first doors 20A, C, E are fixed to the side surface of the track side of the header box 14, and the first drive motors of the remaining first doors 20B, 20D are fixed. 38B and 38D are preferably fixed to the side surface of the header box 14 on the home side. This arrangement suppresses the header box 14 from increasing in size, prevents interference between various parts, and improves maintainability.

Next, the operation of the platform door device will be explained. Before the train arrives at the platform, a control unit (not shown) determines the open state of the platform door device based on the number and type of vehicles on the train. Patterns for opening the platform door device are stored in advance in correspondence with the number of vehicles and vehicle types (particularly the number and position of entrances and exits on one side). Therefore, the control unit selects an appropriate pattern from pre-stored patterns and transmits it to the platform door device as a drive signal. When a drive signal is input to the platform door device, the platform door device drives the plurality of door units 12 according to the drive signal. Depending on the pattern, some door units 12 may not be driven. In addition, when a plurality of platform door devices 10 are consecutively arranged on the platform, there may be some platform door devices 10 that are not driven (do not open) depending on the number of arriving trains.

Each door unit 12 moves to a predetermined position along the Y axis by driving the first drive motor 38 based on the drive signal. Further, each door unit 12 drives the second drive motor 26A and the third drive motor 26B based on the drive signal to open and close the second door 22A and the third door 22B. Note that the opening widths of the second door 22A and the third door 22B do not necessarily have to be the same. There may be a second door 22A or a third door 22B that is not driven depending on the input drive signal. Due to the combination of movements of the first door 20, the second door 22A, and the third door 22B, the platform door device 10 shifts to the form shown in FIG. 2 or 3, for example. In addition, by adjusting the moving speeds of the first door 20, second door 22A, and third door 22B, that is, the driving speeds of the first drive motor 38, second drive motor 26A, and third drive motor 26B, all The doors may start moving at the same time and end moving at the same time. Further, if the moving distances of the plurality of first doors 20 are significantly different from each other, the doors may be opened and closed at different speeds.

In this way, according to the platform door device 10, the open state of the platform door device 10 can be adjusted according to the number of vehicles and the type of vehicle of the arriving train.

Further, when the platform door device 10 is installed on a platform, the only work to be done on the floor surface of the platform is essentially embedding the rails 16. Since all other structures can be installed on the platform, the construction period required for installing the platform door device 10 can be significantly shortened.

As a modification, the platform door device 10 may include an obstacle sensor that detects an obstacle. FIG. 10 is a front view of a platform door device according to a modification, and FIG. 11 is a top view of the platform door device.

The obstacle sensor 50 is provided on the first door 20 and detects obstacles on the main surfaces of the second door 22A and the third door 22B on the platform side. The obstacle sensor 50 has a detection area near the main surfaces of the second door 22A and the third door 22B on the platform side. More specifically, the obstacle sensor 50 includes a second door sensor that detects the vicinity of the main surface of the second door 22A, and a third door sensor that detects the vicinity of the main surface of the third door 22B.

The illustrated example shows a third door sensor that detects the surface of the third door 22B. Note that the obstacle sensor 50 that detects the surface of the second door 22A also has the same structure, so in the following explanation, the third door sensor will be given the reference numeral 50 and a detailed explanation of the structure will be given. A detailed explanation of the sensor will be omitted.

The obstacle sensor 50 is provided on the first door 20 so as not to protrude from the main surface of the first door 20 on the platform side. More specifically, a step 52 that is recessed toward the track-side main surface is formed on the main surface of the first door 20 on the platform side, and the third door sensor is disposed on the step 52. The third door sensor faces the third door 22B and is arranged on the YZ plane that is substantially the same as the main surface of the third door 22B on the platform side. The position where the third door sensor is provided is not particularly limited as long as it can detect the main surface of the third door 22B in the YZ plane. More specifically, the third door sensor is preferably arranged in a region between the two main surfaces (the main surface on the platform side and the main surface on the track side) of the first door 20 in the XZ plane. . Further, it is preferable that the third door sensor has a shape in which the component does not protrude in the X-axis direction with respect to the main surface of the first door 20 on the platform side. More preferably, the home side surface of the third door sensor is flat and flush with the -X side surface of the step.

The platform door device 10 refers to the detection results by the obstacle sensor 50 before driving the first door 20, second door 22A, and third door 22B. The platform door device 10 drives the first door 20, the second door 22A, and the third door 22B after confirming that there are no obstacles on the main surfaces of the second door 22A and the third door 22B on the platform side. . Such an obstacle sensor 50 appropriately detects, for example, a person leaning against the second door 22A and third door 22B, and prevents the person from getting caught when the second door 22A and third door 22B open. can be prevented. Further, by arranging the obstacle sensor 50 in this manner, the circumferential surface of the first door 20 can be kept at least flush with the surface of the first door 20, and if there is an obstacle at a position away from the main surfaces of the second door 22A and the third door 22B, Even if this happens, false positives can be suppressed.

As described above, the platform door device 10 can be easily installed on the platform 18. In addition, by making the first door 20, second door 22A, and third door 22B have a suspension structure using a timing belt, the gaps between the first door 20, second door 22A, and third door 22B are strictly controlled. This eliminates the need for positioning, allowing the gap to be maintained at an appropriate distance.

The embodiments described above are merely examples, and each configuration can be modified as appropriate without departing from the spirit of the invention as set forth in the claims.

By generalizing the embodiments described above, the following aspects can be derived.

[Aspect 1]
a first door movable in the longitudinal direction of the platform along a guide at the top of the opening;
a first drive source provided above the opening and driving the first door;
a second door and a third door that are movable together with the first door and each movable with respect to the first door;
A platform door device that is provided above a first door and includes a second drive source that drives the second door and a third drive source that drives the third door.

According to this configuration, by providing the first drive section above the opening, the burden of construction work on the platform floor can be reduced.

[Aspect 2]
a first drive section including a first drive source, a first timing belt driven by the first drive source, and a first driven pulley on which the first timing belt is applied; a first door, a second door, and a third door; A plurality of door units including doors are provided, and the first timing belts of adjacent door units are offset so as not to interfere with each other when the first door is moved.

According to this configuration, interference between the first doors can be prevented.

[Aspect 3]
a second drive unit including a second drive source, a second timing belt driven by the second drive source, and a second driven pulley on which the second timing belt is applied;
The third drive unit includes a third drive source, a third timing belt driven by the third drive source, and a third driven pulley placed around the third timing belt.

According to this configuration, it becomes easy to adjust the gaps between the first door, the second door, and the third door. This effect becomes particularly noticeable when compared to the case where the child door is moved using a ball screw or rail.

[Aspect 4]
A cable support part for the second door that supports the cable of the second drive source as the second door moves, and a cable support part for the third door that supports the cable of the third drive source as the third door moves. The second door cable support part and the third door cable support part are offset so that the cables do not interfere with each other when the second door and the third door are driven.

According to this configuration, interference between cables can be prevented.

[Aspect 5]
In this case, the second door cable support section and the third door cable support section are offset in at least one of the vertical direction and the horizontal direction.

[Aspect 6]
The second door and the third door are arranged on the track side of the first door.

According to this configuration, when the second door and the third door are moved, it is possible to prevent passengers from coming into contact with the second door or the third door on the platform side.

[Aspect 7]
The first door includes a first sensor that detects an obstacle near the platform side main surface of the second door, and a second sensor that detects an obstacle near the platform side main surface of the third door.

According to this configuration, passengers can be prevented from being drawn in by the second door.

[Aspect 8]
The first sensor and the second sensor are arranged between the track-side main surface and the platform-side main surface of the first door in the thickness direction of the first door.

According to this configuration, the sensor and the additional sensor can suppress erroneous detection of objects that are a certain distance from the second door and the third door.

10 Platform door device, 18 Platform, 20 First door, 22 Second door, 24 Second drive section, 26 Second drive motor, 28 Second timing belt, 30 Second driven pulley, 32 Second guide rail, 36th 1 drive unit, 38 first drive motor, 40 first driven pulley, 42 first timing belt, 46 cable bear (registered trademark), 50 obstacle sensor

Claims (9)

a first door movable in the longitudinal direction of the platform along a guide at the top of the opening;
a first driving source provided above the opening and driving the first door;
a second door and a third door that are movable together with the first door and each movable with respect to the first door;
A second drive source that is provided on the top of the first door and that drives the second door and a third drive source that drives the third door ,
The second door is fixed to a second guide rail provided on the first door and movable with respect to the first door by the driving force of the second drive source,
The third door is a platform door device, wherein the third door is fixed to a third guide rail that is provided on the first door and is movable with respect to the first door by the driving force of the third drive source . a first drive unit including the first drive source, a first timing belt driven by the first drive source, and a first driven pulley on which the first timing belt is applied;
A plurality of door units including the first door, the second door, and the third door,
The platform door device according to claim 1, wherein the first timing belts of adjacent door units are offset from each other so as not to interfere with each other when the first door is moved. a second drive unit including the second drive source, a second timing belt driven by the second drive source, and a second driven pulley on which the second timing belt is applied;
The platform door according to claim 1, comprising: the third drive source, a third timing belt driven by the third drive source, and a third drive section including a third driven pulley placed around the third timing belt. Device. a second door cable support part that supports a cable of the second drive source as the second door moves;
a third door cable support part that supports a cable of the third drive source as the third door moves;
The cable support section for the second door and the cable support section for the third door are offset so that the cables do not interfere with each other when the second door and the third door are driven. 3. The platform door device according to any one of 3. The platform door device according to claim 4, wherein the second door cable support section and the third door cable support section are offset in the vertical direction. The platform door device according to claim 4 or 5, wherein the second door cable support section and the third door cable support section are offset in a horizontal direction. The platform door device according to any one of claims 1 to 6, wherein the second door and the third door are arranged on a track side of the first door. The first door includes a first sensor that detects an obstacle near the platform side main surface of the second door, and a second sensor that detects an obstacle near the platform side main surface of the third door. The platform door device according to any one of claims 1 to 7. The platform door according to claim 8, wherein the first sensor and the second sensor are arranged between a track side main surface and a platform side main surface of the first door in the thickness direction of the first door. Device.

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