Door sliding mechanism at elevator landing

Abstract

To provide a slide structure of a door which does not require a maintenance worker to remove foreign matters that are accumulated on a top surface of a door rail for each short period of time even at a place where many foreign matters such as dust and volcanic ash are generated.SOLUTION: A slide structure 13 of a door 11 at a landing 14 of an elevator includes a door rail 30 provided above a doorway 15 of the landing 14 and a door hanger 20 provided on an upper end part of the door 11 and having hanger rollers 22 rolling on a top surface of the door rail 30. A groove part 31 is formed in an opening / closing direction of the door 11 on the top surface of the door rail 30.SELECTED DRAWING: Figure 3

Description

Technical Field

[0007] , , , , , , , ,

[0001] The present invention relates to a slide structure of a door at an elevator landing, particularly to the structure of a door rail.

Background Art

[0002] Doors are provided at the entrances and exits of each floor landing of an elevator. The landing door is opened and closed by guiding a door hanger provided at the upper part of the door along a door rail provided above the entrance and exit of the landing.

[0003] <Conventional Door Slide Structure> The conventional door slide structure 113 will be described with reference to FIGS. 7 and 8.

[0004] In the conventional door slide structure 113, a hanger roller 122 provided on a door hanger 120 rolls on the upper surface of a door rail 130, and the door rail 130 guides the door hanger 120.

[0005] Also, in the conventional door slide structure 113, foreign matters D such as dust deposited on the contact surface of the door rail 130 with the hanger roller 122 are accumulated at the end portions of the door rail 130 at the fully closed or fully open position of the door by the hanger roller 122 as the door is opened and closed. The foreign matters D accumulated at the end portions are periodically removed by maintenance workers.

[0006] Furthermore, for example, Patent Document 1 discloses a cleaning and lubricating material for a door rail 130. By removing foreign matters deposited on the upper surface of the door rail 130 with the cleaning and lubricating material, the number of removals by maintenance workers is reduced.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

[0008] However, if the elevator landing is located outdoors, a large amount of dust may accumulate on the upper surface of the door rail 130, and in some areas, volcanic ash may also accumulate. When a large amount of dust or foreign matter D such as volcanic ash accumulates on the upper surface of the door rail 130, cleaning with cleaning lubricants may not be sufficient, and maintenance workers will need to remove the accumulated foreign matter from the upper surface of the door rail at short intervals.

[0009] Therefore, the present invention aims to provide a door sliding structure that can reduce the amount of foreign matter accumulated on the upper surface of the door rail, even in places with a lot of foreign matter such as dust or volcanic ash. [Means for solving the problem]

[0010] The door sliding structure according to the present invention is a door sliding structure for an elevator landing, comprising a door rail provided above the entrance / exit of the landing, and a door hanger provided at the upper end of the door and having a hanger roller that rolls on the upper surface of the door rail, wherein a groove is formed on the upper surface of the door rail along the opening and closing direction of the door.

[0011] By adopting the above configuration, the amount of foreign matter that accumulates by being pressed against the contact surface between the door rail and the hanger rail can be reduced by simply allowing foreign matter to accumulate in the groove.

[0012] In the door sliding structure according to the present invention, it is preferable that the contact surface of the door rail with the hanger roller is inclined.

[0013] By using the above configuration, when the hanger roller rolls along the upper surface of the door rail, foreign objects are pushed out to the outside of the door rail, thereby reducing the amount of foreign objects that accumulate on the upper surface of the door rail.

[0014] In the door sliding structure according to the present invention, it is preferable to include a door rail cleaning and lubrication member that is attached to the door hanger and is formed to contact the contact surface with the hanger roller on the upper surface of the door rail, and that cleans the contact surface and supplies lubrication to the contact surface in conjunction with the opening and closing operation of the door.

[0015] With the above configuration, the hanger roller can roll smoothly along the upper surface of the door rail.

[0016] In the door sliding structure according to the present invention, it is preferable to include a hanger roller cleaning and lubrication member that is attached to the door hanger, is in close contact with the rotating surface of the hanger roller, and cleans the rotating surface in conjunction with the opening and closing operation of the door, and also supplies lubrication to the rotating surface.

[0017] With the above configuration, the hanger roller can roll smoothly along the upper surface of the door rail. [Effects of the Invention]

[0018] According to the door sliding structure of the present invention, even in places with a lot of foreign matter such as dust or volcanic ash, the amount of foreign matter that accumulates on the contact surface between the door rail and the hanger roller can be reduced. As a result, maintenance workers do not need to remove foreign matter at short intervals. [Brief explanation of the drawing]

[0019] [Figure 1] This is a front view showing a door sliding structure, which is an example of an embodiment. [Figure 2] This is a front view, enlarged from a portion of Figure 1. [Figure 3] This is a partial cross-sectional view taken from arrow A in Figure 2. [Figure 4] This is a front view showing the sliding structure of a door equipped with a cleaning and lubrication component. [Figure 5] This is a partial cross-sectional view of the door rail cleaning and lubrication member as seen from arrow B in Figure 4. [Figure 6] This is a view of the hanger roller cleaning and lubrication member from the direction of arrow C in Figure 4. [Figure 7] It is a front view showing the conventional sliding structure of a door. [Figure 8] It is a view seen from the arrow D direction of FIG. 7.

Embodiments for Carrying Out the Invention

[0020] <1. Summary of the Invention> Hereinafter, an example of an embodiment of the present invention will be described in detail. In the following description, specific shapes, materials, directions, numerical values, etc. are examples for facilitating the understanding of the present invention, and can be appropriately changed according to applications, purposes, specifications, etc.

[0021] According to the sliding structure 13 of the door 11 of the present invention, although details will be described later, as shown in FIG. 3, a groove portion 31 is formed on the upper surface of the door rail 30, and by inclining the contact surface of the door rail 30 with the hanger roller 22, foreign matter D accumulated on the contact surface can be reduced. Thereby, it is not necessary for maintenance workers to remove the foreign matter D every short period.

[0022] Hereinafter, the "upper surface of the door rail 30" means the surface facing upward in the door rail 30, which is the surface on which foreign matter D such as dust or volcanic ash accumulates. The "contact surface of the door rail 30 with the hanger roller 22" is a portion of the upper surface of the door rail 30 where the hanger roller 22 contacts the rotating surface of the hanger roller 22 when the hanger roller 22 rolls on the door rail 30 and accumulates foreign matter D.

[0023] Hereinafter, the description will be made according to the opening and closing direction of the door 11 (hereinafter simply referred to as the opening and closing direction), the vertical direction, and the front and rear direction orthogonal to the opening and closing direction and the vertical direction. Also, the boarding platform 14 side in the front and rear direction is described as the front side, and the car body side is described as the rear side.

[0024] The elevator landing 14 in this embodiment is assumed to be installed outdoors and in an environment with more dust than indoors, but is not limited to this. Furthermore, the elevator landing 14 in this embodiment is installed in an area with a lot of volcanic ash. In other words, the elevator landing 14 in this embodiment is assumed to be in an environment with more foreign matter D such as dust or volcanic ash compared to an elevator landing installed indoors, but is not limited to this.

[0025] In the following, the state in which foreign matter D, such as dust or volcanic ash, naturally falls and accumulates will be simply described as "the accumulation of foreign matter D." Furthermore, the state in which the accumulated foreign matter D is gathered together by some action will be described as "the accumulation of foreign matter D." In addition, the state in which the accumulated foreign matter D absorbs moisture or oil from the surroundings and solidifies will be described as "the adhesion of foreign matter D."

[0026] <2-1. Door> Using Figure 1, we will describe the sliding structure 13 of the door 11, which is an example of an embodiment.

[0027] Each elevator landing 14 has an entrance / exit 15 with a landing door 10. The landing door 10 is a double-leaf type, with two doors 11 and 12 moving from the center to both sides. The sliding structure 13 of the doors 11 and 12 is a structure that slides the doors 11 and 12 in order to open and close the elevator landing door 10. The two doors 11 and 12 have the same configuration except that they are symmetrical, so only door 11 will be described below.

[0028] In the sliding structure 13 of the door 11, the door hanger 20 provided at the upper end of the door 11 is guided along the opening and closing direction by the door rail 30 provided above the entrance / exit 15 of the landing 14. More specifically, the door hanger 20 is guided by the door rail 30 as the hanger roller 22 provided on the door hanger 20 rolls along the door rail 30. On the other hand, the lower part of the door 11 is guided along the opening and closing direction by the sill 39.

[0029] Furthermore, when the connector attached to one of the two doors 11 and 12 moves to one side in the opening and closing direction, the connector attached to the other door 12 moves to the other side in the opening and closing direction. As a result, each door 11 and 12 is driven to move in opposite directions relative to each other in the opening and closing direction.

[0030] <2-2. Door Hanger> The door hanger 20 will be explained using Figures 1 to 3.

[0031] The door hanger 20 is provided at the upper end of the door 11 and suspends and supports the door 11 relative to the door rail 30. The door hanger 20 allows the door 11 to slide smoothly relative to the door rail 30. The door hanger 20 includes a hanger plate 21 and a hanger roller 22, which will be described in detail later.

[0032] The hanger plate 21 is fixed to the door 11 and rotatably supports the hanger roller 22. The hanger plate 21 is provided along the opening and closing direction and is formed in an L-shape with its cross-section bent towards the rear when viewed from the opening and closing direction. Two hanger rollers 22 are provided on the hanger plate 21, each along the opening and closing direction.

[0033] The hanger roller 22 rolls along the upper surface of the door rail 30, causing the door hanger 20 to slide along the door rail 30, thereby opening and closing the door 11. The rotation axis of the hanger roller 22 is provided along the front-rear direction and is fixed to the hanger plate 21. The rotation surface of the hanger roller 22 is formed in an arc shape that bulges toward the rotation axis when viewed in cross-section from the opening and closing direction.

[0034] <2-3. Door rails> The door rail 30 will be explained using Figures 1 to 3.

[0035] The door rail 30 is a rail on which the hanger roller 22 of the door hanger 20 rolls, and guides the door hanger 20 in the opening and closing direction. The door rail 30 is fixed to the wall or the like above the entrance 15 of the landing 14. The door rail 30 is installed along the opening and closing direction.

[0036] As described above, the elevator landing 14 in this embodiment is in an environment with many foreign objects D, so foreign objects D accumulate on the door rail 30. The accumulated foreign objects D are collected by the hanger roller 22 at the end of the door rail 30 when the door 11 is fully closed or fully open, as the door 11 opens and closes. The foreign objects D accumulated at the end are periodically removed by maintenance workers. However, in places with many foreign objects D, maintenance workers have to remove the foreign objects D at short intervals, which is inefficient.

[0037] Therefore, a groove 31 is formed on the upper surface of the door rail 30 in this embodiment, along the opening and closing direction. The groove 31 is formed in the center of the front-to-back direction when viewed from the opening and closing direction.

[0038] The groove 31 reduces the amount of foreign matter D that accumulates on the contact surface between the door rail 30 and the hanger roller 22. More specifically, the rolling of the hanger roller 22 along the door rail 30 reduces the amount of foreign matter D that accumulates at the end of the door rail 30 when the door 11 is fully closed or fully open. The groove 31 is regularly cleaned by maintenance workers, and any foreign matter D accumulated in the groove 31 is removed by cleaning.

[0039] More specifically, the door rail 30 has a front section 32, an intermediate section 33, and a rear section 34, which will be described in detail later, extending from the front to the rear in the front-rear direction.

[0040] The front portion 32 is formed in an oval shape when viewed in cross-section from the opening and closing direction. The rear portion 34 has the same shape as the front portion 32 and is also formed in an oval shape when viewed in cross-section from the opening and closing direction. In other words, both ends of the upper surface of the door rail 30 in the front-rear direction are formed in an arc shape when viewed from the opening and closing direction.

[0041] The intermediate section 33 is formed in a rectangular shape when viewed in cross-section from the opening and closing direction. The vertical length of the intermediate section 33 is shorter than the vertical lengths of the front section 32 and the rear section 34. The front section 32, intermediate section 33, and rear section 34 are fixed so that their vertical centers coincide. Therefore, the upper part of the intermediate section 33 is formed as the groove 31 described above.

[0042] With the above configuration, when viewed from the opening and closing direction, both ends of the upper surface of the door rail 30 in the front-rear direction are formed in an arc shape, a groove 31 (space above the intermediate part 33) is formed in the center in the front-rear direction as described above, and the rotation surface of the hanger roller 22 is formed in an arc shape that bulges toward the axis of rotation, so the contact surface of the door rail 30 with the hanger roller 22 is inclined.

[0043] More specifically, the contact surface of the front 32 of the door rail 30 with the hanger roller 22 is inclined toward the front, and the contact surface of the rear 34 of the door rail 30 with the hanger roller 22 is inclined toward the rear.

[0044] Because the contact surface of the door rail 30 with the hanger roller 22 is inclined, when the door 11 is opened and closed, the foreign matter D accumulated on the contact surface is pushed outwards from the door rail 30 (towards the front in the case of the front part 32, and towards the rear in the case of the rear part 34) as the hanger roller 22 rolls along the door rail 30.

[0045] This reduces the amount of foreign matter D that accumulates on the contact surface between the door rail 30 and the hanger roller 22. As a result, the amount of foreign matter D that accumulates at the end of the door rail 30 when the door 11 is fully closed or fully open, due to the hanger roller 22 rolling along the door rail 30, can be reduced.

[0046] <2-4. Cleaning and Lubrication Components> The rail cleaning and lubrication member 40 and the roller cleaning and lubrication member 50 will be explained using Figures 4 to 6.

[0047] The rail cleaning and lubrication member 40, acting as a door rail cleaning and lubrication member, cleans the upper surface of the door rail 30 and lubricates it by moving along the upper surface of the door rail 30 in conjunction with the opening and closing of the door 11 while in contact with the upper surface of the door rail 30. The rail cleaning and lubrication member 40 is formed in a rectangular parallelepiped shape from a nonwoven fabric such as felt impregnated with oil, or from a foamed resin such as foamed polyurethane.

[0048] As shown in Figure 5, the rail cleaning and lubrication member 40 is formed to contact at least the contact surface with the hanger roller 22 of the door rail 30 in a cross-sectional view from the opening and closing direction. Preferably, the rail cleaning and lubrication member 40 has a substantially M-shape that closely fits the arc shape of the upper ends of the front portion 32 and the rear portion 34 in a cross-sectional view from the opening and closing direction. Note that the rail cleaning and lubrication member 40 does not need to contact the groove portion 31.

[0049] The rail cleaning and lubrication member 40 can clean foreign matter D accumulated on the contact surface between the door rail 30 and the hanger roller 22, and also lubricate the contact surface. As a result, the hanger roller 22 can roll smoothly on the door rail 30.

[0050] The rail cleaning and lubrication member 40 is fixed to the support member 41 by fastening members such as bolts. The support member 41 is fixed to one end of the door hanger 20 in the opening and closing direction by fastening members such as bolts. This allows the position of the rail cleaning and lubrication member 40 to be adjusted to adjust the degree of contact with the upper surface of the door rail 30.

[0051] As shown in Figure 6, the roller cleaning and lubrication member 50, acting as a hanger roller cleaning and lubrication member, cleans the rotating surface of the hanger roller 22 and lubricates the rotating surface of the hanger roller 22 as the hanger roller 22 rotates while in contact with the rotating surface of the hanger roller 22.

[0052] The roller cleaning and lubrication member 50 is formed in a rectangular parallelepiped shape from a nonwoven fabric such as felt impregnated with oil, or from a foamed resin such as foamed polyurethane. In cross-sectional view, the roller cleaning and lubrication member 50 is formed in an arc shape so as to contact the rotating surface of the hanger roller 22.

[0053] In the slide structure 13 of this embodiment, compared to the conventional slide structure 113 (see Figures 7 and 8), the contact area between the hanger roller 22 and the door rail 30 is smaller. As a result, the pressure acting on the contact surface of the hanger roller 22 with the door rail 30 increases, and foreign matter D accumulated on the door rail 30 may adhere to the rotating surface of the hanger roller 22.

[0054] Therefore, the roller cleaning and lubrication member 50 can clean foreign matter D accumulated on the rotating surface of the hanger roller 22 and lubricate the rotating surface. As a result, the hanger roller 22 can roll smoothly on the door rail 30.

[0055] The roller cleaning and lubrication member 50 is fixed to the support member 51 by fastening members such as bolts. The support member 51 is fixed to the upper end of the door hanger 20 by fastening members such as bolts. This allows the position of the roller cleaning and lubrication member 50 to be adjusted, thereby adjusting the degree of contact with the rotating surface of the hanger roller 22.

[0056] <3. Effects (Removal of foreign substances)> According to the sliding structure 13 of the door 11 of this embodiment, the amount of foreign matter D that accumulates on the contact surface between the door rail 30 and the hanger roller 22 can be reduced.

[0057] More specifically, the foreign matter D accumulated in the groove 31 of the foreign matter D that accumulates on the upper surface of the door rail 30 is not collected by the hanger roller 22 at the end of the upper surface of the door rail 30 when the door 11 is fully closed or fully open, because the groove 31 does not come into contact with the hanger roller 22. The groove 31 is regularly cleaned by maintenance personnel, and the foreign matter D accumulated in the groove 31 is removed during cleaning.

[0058] Of the foreign matter D accumulated on the upper surface of the door rail 30, the foreign matter D accumulated on the contact surface with the hanger roller 22 is pushed outwards in the front-rear direction of the door rail 30 when the hanger roller 22 rolls along the door rail 30, because the contact surface is inclined. The remaining foreign matter D is removed by the rail cleaning and lubrication member 40.

[0059] Of the foreign matter D accumulated on the upper surface of the door rail 30, the foreign matter D accumulated on the upper end (other than the contact surface) of the front 32 or rear 34 is not collected at the end of the door rail 30 by the hanger roller 22 as the door 11 opens and closes, because the upper end of the front 32 or rear 34 does not come into contact with the hanger roller 22. The foreign matter D accumulated on the upper end of the front 32 or rear 34 is removed by the rail cleaning and lubrication member 40.

[0060] In this way, even in landings 14 with a large amount of foreign matter D, the amount of foreign matter D accumulated at the contact surface between the door rail 30 and the hanger roller 22 can be reduced. As a result, the amount of foreign matter D accumulated at the end of the door rail 30 when the door 11 is fully closed or fully open can be reduced as the hanger roller 22 rolls along the door rail 30. This eliminates the need for maintenance workers to remove foreign matter D that has accumulated and hardened at the end of the upper surface of the door rail 30 at short intervals.

[0061] It should be noted that the present invention is not limited to the embodiments and their modifications described above, and various changes and improvements are possible within the scope of the claims of this application. [Explanation of symbols]

[0062] 10 Landing door, 11 Door, 12 Door, 13 Sliding structure, 14 Landing, 15 Entrance / Exit, 20 Door hanger, 21 Hanger plate, 22 Hanger roller, 30 Door rail, 31 Groove, 32 Front section, 33 Middle section, 34 Rear section, 39 Threshold, 40 Rail cleaning and lubrication member (Door rail cleaning and lubrication member), 41 Support member, 50 Roller cleaning and lubrication member (Hanger roller cleaning and lubrication member), 51 Support member, 113 Sliding structure, 120 Door hanger, 122 Hanger roller, 130 Door rail, D Foreign matter

Claims

1. A sliding door structure at the elevator landing, A door rail is provided above the entrance / exit of the aforementioned platform, A door hanger provided at the upper end of the door and having a hanger roller that rolls on the upper surface of the door rail, Equipped with, A groove is formed on the upper surface of the door rail, along the direction in which the door opens and closes. The door rail cleaning and lubrication member is attached to the door hanger and is formed to contact the contact surface of the door rail with the hanger roller, and cleans the contact surface and supplies lubrication to the contact surface in conjunction with the opening and closing operation of the door, The door hanger is equipped with a hanger roller cleaning and lubrication member that is attached to the door hanger, contacts the rotating surface of the hanger roller, and cleans the rotating surface in conjunction with the opening and closing operation of the door, and also supplies lubrication to the rotating surface. Door sliding mechanism.

2. A door sliding structure according to claim 1, The contact surface of the door rail with the hanger roller is inclined. Door sliding mechanism.

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