JP7328085B2 - Platform door device - Google Patents

Description

The present invention relates to a platform door device installed on a platform of a railway station or the like.

Platform door devices are installed along the edge of the platform to prevent people from falling onto the track side of the station platform and from contact with running trains. Such a platform door device is an essential component not only for railways, but also for new transportation systems that operate automatically, for example. A platform door device forms an aisle facing an entrance of a vehicle such as a railway, and the aisle is typically opened and closed by a pair of sliding doors.

The platform door device disclosed in Document 1 was developed in order to achieve weight reduction and cost reduction. The linear movement of the sliding door is achieved without the heavy and expensive steel guide rails used in conventional systems.

JP 2016-210245 A

The platform door device of Patent Document 1 is designed assuming that the external force acting on the sliding door is the load received from a large number of passengers (hereinafter referred to as "crowd load") when the platform is overcrowded with many passengers. It is Even if this crowd load acts, the sliding door and the door support device will not be damaged, but the movement of the sliding door that closes the aisle is allowed to be blocked. On the other hand, the external force that acts on the sliding door during normal non-crowding is assumed to be the force that acts when a small number of passengers touch the sliding door or push it lightly. The load assumed during non-crowding is also a load that does not prevent the sliding door from moving even if it acts.

The sliding door and the door supporting device of the platform door device of Patent Document 1 can withstand a fairly large crowd load because the door supporting device is composed of a liner that makes sliding contact with the sliding door, but the frictional force generated in the liner As a result, it was relatively easy for the door to become unopenable even when it was not crowded.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a platform door system that can withstand a large crowd load and that does not easily block the movement of the door.

In order to achieve the above object, according to the present invention, there is provided a platform door apparatus disposed along an edge of a platform to form an openable and closable aisle, the platform door system having an open position for opening the aisle and an open position for opening the aisle. A sliding door composed of a frame structure capable of reciprocating linear movement between a closing position for closing a passenger passageway, a door support device supporting the sliding door so as to be linearly movable, and a door pocket housing the sliding door at least partially. and a door pocket in which a door support device is disposed, the door support device including a vertical position regulating portion for regulating the position of the sliding door in the direction of gravity, and a vertical position regulating portion for regulating the position of the sliding door in the direction of gravity. a horizontal position regulating portion for regulating a horizontal position, the horizontal position regulating portion having a liner in sliding contact with the frame member of the frame structure of the sliding door and a rolling element in rolling contact with the frame member. , a platform door device is provided.

According to this, the horizontal position regulating portion of the door support device has not only a liner that makes sliding contact with the frame member of the sliding door, but also a rolling element that makes rolling contact. It becomes possible for the sliding door to move against the load.

In other words, by using different means such as a sliding contact liner and a rolling contact rolling element together, and complementing each other with their respective advantages, it is possible to reduce the risk of damage or damage to sliding doors and door support devices subjected to crowd loads. It is possible to realize a platform door device having a door support device capable of both preventing deformation and stabilizing the operation of the sliding door when it is not crowded.

More specifically, the sliding contact liner has the advantage of being able to take a large load, but has the disadvantage of creating a large resistance due to friction when subjected to a large force. On the other hand, rolling elements that are in rolling contact have the advantage that they cannot receive an extremely large load, but a small amount of external force does not generate a large resistance.

In the present invention, in consideration of each of these characteristics, a rolling element is provided so that the sliding door can stably operate against the force pushing the sliding door from the side in the horizontal direction when it is not crowded. is used to guide the sliding door. On the other hand, during congestion, a large crowd load, for example, 20 times or more than when it is not crowded, may act on the sliding door. Large crowd loads are taken by the liner in sliding contact to avoid breakage or deformation of the .

1 is an external perspective view of a platform door device according to a first embodiment of the present invention; FIG. It is a front view which shows one side of a pair of sliding door of a platform door apparatus, and a part of door pocket. FIG. 3 is a front view of FIG. 2 with a slide door removed; It is a cross-sectional view of the main frame of the sliding door of the platform door device. It is a perspective view of the horizontal position control part of a platform door apparatus. It is the (a) side view and (b) top view of a horizontal position control part. FIG. 4 is a side view showing a horizontal position regulating portion and a main frame of a sliding door movably fitted thereto; It is a perspective view of the horizontal position control part of the platform door apparatus by the 2nd Embodiment of this invention.

A platform door device 100 according to a first embodiment of the present invention will be described below with reference to FIGS. 1 to 7. FIG.
The platform door device 100 according to the first embodiment cooperates with a similar platform door device (not shown) that is arranged adjacently to form an openable and closable aisle facing the boarding gate of a railway vehicle or the like. do. Therefore, the platform door device 100 includes a pair of sliding doors 30 capable of reciprocating linear movement between an open position for opening the aisle and a closed position for closing the aisle. a door support device 10 that supports the slide door 30; a door case 40 that houses the slide door 30; the door case 40 in which the door support device 10 is arranged; equipped with equipment.

1 is a perspective view showing the entire platform door device 100, while FIG. It is a front view showing. 1 and 2 show the sliding door 30 in its fully extended closed position. FIG. 3 is a front view showing the door support portion 41 and the base portion 42 of the door case 40 with the sliding door 30 removed from FIG. 2 and 3, the door supporting portion 41 and the base portion 42 of the door pocket 40 are shown with their covers removed. When the sliding door 30 is in the retracted open position, it is mostly stored in the door pocket 40. - 特許庁

The door pocket 40 has a pair of left and right approximately L-shaped or approximately inverted L-shaped door support portions 41, a pair of base portions 42 that support them, and a central portion 43 between the pair of left and right door support portions 41. . Most of the components of the door support device 10 and the door driving device 50 are fixed on the upper surface of the base portion 42 , and some components of the door support device 10 are arranged on the door support portion 41 . The door pocket 40 also houses a control device (not shown). The central portion 43 of the door pocket is provided to cover mainly the rear half portion of the sliding door 30 retracted to the open position.

The pair of sliding doors 30, the door support device 10 that movably supports them, the door support portion 41 of the door pocket 40, etc. are basically bilaterally symmetrical and have the same structure. , one side (left side) will be described as a representative.

The sliding door 30 is formed as a frame structure with a main frame 31 extending in the direction of its movement and an upper sub-frame 32 extending above and parallel to the main frame 31 and narrower than the main frame 31 . A frame 32, a lower sub-frame 33 extending parallel to and below the main frame 31 and having the same cross-sectional contour as the upper sub-frame 32, and connecting the main frame 31 and the upper sub-frame 32 at the front end side. and a lower connection member 35 that connects the main frame 31 and the lower sub-frame 33 on the front end side. Spaces are formed between the main frame 31 and the upper sub-frame 32 and between the main frame 31 and the lower sub-frame 33, respectively.

The main frame 31 is formed as a substantially rectangular hollow extruded member made of aluminum alloy having a cross-sectional shape shown in FIG. The interior of the main frame 31 is divided into an upper space and a lower space by a horizontally extending partition wall 31a, and a guide groove 31b is formed at the bottom. Vertical rollers 22 of the door support device 10, which will be described later, are brought into rolling contact with the side walls 31d of the guide groove portion 31b.

The door driving device 50 is similar to that of the well-known type detailed in, for example, US Pat. The door driving device 50 is configured such that the sliding door 30 can be advanced toward the closed position and retracted toward the open position by operating a drive motor (not shown). Therefore, the door driving device 50 includes a drive motor (not shown) consisting of a servomotor, a speed reducer (not shown) coupled to the drive motor, a toothed pulley 51 connected to the speed reducer, and a toothed pulley 51 wound around the toothed pulley 51 . It includes an entrained toothed belt (not shown), an idler pulley 52, and the like. The toothed belt is arranged along a recessed portion 31c further recessed from the bottom surface of the guide groove portion 31b of the main frame 31, and both ends thereof are fixed to the main frame 31. As shown in FIG. The components of the door driving device 50 except for the toothed belt are arranged on the upper surface of the base portion 42 of the door pocket 40 .

The door support device 10 includes a vertical position regulating portion 13 that regulates the position of the main frame 31 in the direction of gravity, that is, the Y-axis direction, and two horizontal position regulating portions 14 and 15 that regulate the position of the main frame 31 in the Z-axis direction. , and two subframe support devices 12 that regulate the positions of the upper and lower subframes 32,33.

The vertical position regulating portion 13 of the door support device 10 includes a first horizontal roller 16 and a second horizontal roller 17 on the lower side which are arranged so as to be in rolling contact with the bottom surface of the guide groove portion 31 b of the main frame 31 , and the main frame 31 . and an upper third horizontal roller 18 arranged in rolling contact with the upper surface. The horizontal rollers are supported by shafts extending in the horizontal Z-axis direction. Although the first horizontal roller 16 and the third horizontal roller 18 are always in contact with the sliding door 30 regardless of the position of the sliding door 30, the second horizontal roller 17 is arranged so as to be in contact with the sliding door 30 when it is retracted. It is These horizontal rollers support not only the vertical load acting on the sliding door 30 but also the rotational moment around the Z-axis generated in the sliding door 30 .

The two horizontal position regulating portions 14 and 15 are the front horizontal position regulating portion 14 arranged on the door tip side and the rear horizontal position regulating portion 15 arranged on the door bottom side of the toothed pulley 51 of the door driving device 50. is. These two horizontal position regulating portions 14 and 15 support not only the load of the slide door 30 in the Z-axis direction, but also the rotational moment generated in the slide door 30 around the Y-axis.

As shown in FIGS. 5 to 7, the front horizontal position regulating portion 14 includes a groove-shaped member 19 bolted to the upper surface of the base portion 42 of the door pocket 40 and both sides of the main frame 31 of the sliding door 30. It comprises a pair of liners 21 in sliding contact and a pair of vertical rollers 22 in rolling contact with the side walls 31d of the guide groove 31b of the main frame 31. As shown in FIG. The channel member 19 has a pair of walls 19a and a base 19b forming a channel. The channel member 19 is fixed so that the channel opens upward. The width of the groove is slightly larger than the width of the main frame 31 of the sliding door 30 so that the lower half of the main frame 31 can pass through the groove while being guided. The liner 21 is angularly shaped and slides against the main frame 31 at its vertically extending portion and is bolted to the upper ends of the side walls 19a of the channel member 19 at its horizontally extending portion. Also, the liner 21 is made of synthetic resin in this embodiment.

As shown in FIG. 7, the pair of vertical rollers 22 of the front horizontal position regulating portion 14 are moved from the bottom of the groove of the channel member 19 so as to roll against the side walls 31d of the guide groove 31b on the bottom of the main frame 31. Each of them is supported by a vertically extending shaft 23 . In the present embodiment, the vertical roller 22 on the front side of the door is in rolling contact with the side wall 31d on the right side of the guide groove 31b of the main frame 31 in FIG. is in rolling contact with the side wall 31d of the . Therefore, the positions of the respective shafts 23 in the Z-axis direction are shifted from each other by a distance s (FIG. 6(b)).

The rear horizontal position regulating portion 15 differs in that the height of the groove member 26 thereof is lower than the height of the groove member 19 of the front horizontal position regulating portion 14, but the other configuration is the same as that of the front horizontal position regulating portion. Since it is the same as 14, its explanation is omitted.

In this embodiment, when a horizontal load acts on the main frame 31 of the sliding door 30, the vertical rollers 22 of the horizontal position regulating portions 14 and 15 are arranged so as to contact the main frame 31 before the liner 21. ing. More specifically, slight gaps are set between the vertical rollers 22 and the liner 21 and the main frame 31 in consideration of the dimensional errors of the members. The gap between the liner 21 and the main frame 31 is set smaller than the gap between the liner 21 and the main frame 31 .

The subframe support device 12 for the upper subframe 32 includes a synthetic resin bushing 28 mounted on the outer wall of the housing of the door support portion 41 of the door pocket 40 and the upper subframe disposed inside the door support portion 41. 32 is provided with subframe horizontal rollers 29 that rotatably support the subframe 32 from below. The bushing 28 has a hole (not shown) shaped to correspond to the contour of the subframe so as to regulate the position of the subframe in the Y and Z directions.

The subframe support device 12 for the lower subframe 33 is configured such that the bushing 28 is attached to the outer wall of the base portion 42 and the subframe horizontal rollers 29 are arranged inside the base portion 42 . Although different from that for the frame 32, other configurations are similar to those for the upper sub-frame 32. FIG.

According to the platform door device 100 according to the first embodiment, the front and rear horizontal position regulating portions 14, 15 are provided not only with the liner 21 sliding contact with the main frame 31 but also with the vertical roller 22 rolling contact. While it can withstand a crowd load equal to or greater than that of the platform door device described in Patent Document 1, it is possible for the sliding door 30 to move against a larger horizontal load than in Patent Document 1. Become.

Further, since the vertical rollers 22 of the horizontal position regulating portions 14 and 15 are arranged inside the bottom portion of the main frame 31, more specifically, in contact with the side wall 31d of the guide groove portion 31b, the main frame 31 and the groove-shaped member are 19 (dimension in the Z-axis direction), it is possible to dispose the vertical rollers 22 having a relatively large outer diameter without increasing the thickness (dimension in the Z-axis direction) as compared with, for example, Patent Document 1. As a result, the diameter of the shaft 23 of the vertical roller 22 can be made large and strong, and the contact surface pressure generated on the main frame 31 at the contact portion with the vertical roller 22 can be suppressed to a low level. The low contact surface pressure makes it possible to bring the main frame 31 into direct contact with the vertical rollers 22, even if the main frame 31 is made of, for example, an aluminum alloy, so that it can be made of steel, which is hard and highly accurate, but heavy and expensive. eliminates the need to use multiple rail members.

Next, a platform door system according to a second embodiment of the present invention will be described with reference to FIG. The platform door system according to the second embodiment differs from that according to the first embodiment in the configuration of the horizontal position regulating portion 114 of the door support device, but the other parts are the same. The regulation unit 114 will be described below.

In the second embodiment, the pair of vertical rollers 122 of the horizontal position regulating portion 114 are fixed to the upper ends of the pair of opposing side walls 119a of the channel member 119 via brackets, respectively. Therefore, the vertical rollers 122 are in rolling contact with the left and right side surfaces of the main frame 31 (not shown) of the sliding door 30, respectively. Although the outer diameter of these vertical rollers 122 is smaller than the outer diameter of the vertical rollers 122 in the first embodiment, they are easy to access from the outside and therefore have the advantage of easy adjustment and replacement. In FIG. 8, a pair of liners 121 are fixed to the upper inner surfaces of a pair of side walls 119a of channel member 119 via L-shaped brackets.

REFERENCE SIGNS LIST 10 door support device 13 vertical position regulating portion 14 front horizontal position regulating portion 15 rear horizontal position regulating portion 19 channel member 21 liner 22 vertical roller 30 sliding door 31 main frame 40 door pocket 41 door supporting portion 100 platform door device

Claims (4)

A platform door device that is disposed along the edge of the platform and forms an openable and closable aisle,
a sliding door made up of a frame structure capable of reciprocating linear movement between an open position that opens the aisle and a closed position that closes the aisle;
a door support device that supports the slide door so as to be linearly movable;
a door pocket that at least partially accommodates the sliding door, the door pocket being provided with the door support device;
The door support device includes a vertical position regulating portion that regulates the position of the sliding door in the gravitational direction, and a horizontal position regulating portion that regulates the position of the sliding door in a horizontal direction perpendicular to the direction of movement of the sliding door,
The horizontal position regulating portion has a liner that makes sliding contact with the frame member of the frame structure of the sliding door and a rolling element that makes rolling contact,
A platform door apparatus, wherein a gap between the rolling element and the frame member is smaller than a gap between the liner and the frame member . The frame member of the sliding door has a guide groove extending in the moving direction,
The horizontal position regulating portion includes a groove-shaped member forming a gap through which the frame member of the slide door passes in the moving direction, a shaft provided at the bottom of the groove-shaped member and extending in the direction of gravity, and the rolling element. a vertical roller rotatably mounted on the shaft as
said at least one vertical roller in rolling contact with a side wall of said guide channel of said frame member;
2. The platform door apparatus according to claim 1, wherein a surface of a side wall of said guide groove with which said vertical roller rolls and contacts is parallel to said direction of gravity . The horizontal position regulating section includes two vertical rollers,
The movement is such that one of the two vertical rollers contacts only one wall of the guide groove of the frame member and the other of the two vertical rollers contacts only the other wall of the guide groove. 3. The platform door apparatus according to claim 2, wherein the two vertical rollers are offset in a direction perpendicular to the direction. The platform door apparatus according to any one of claims 1 to 3, wherein said frame member is made of aluminum alloy.

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