JP2018002375A - Door shoe for elevator door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door shoe for an elevator door capable of removing foreign substances accumulated on a bottom portion of a sill groove even when an interval between the bottom portion of the sill groove and a lower end of the elevator door varies.SOLUTION: A door shoe 30 is attached to a lower end portion of a car door being an elevator door having a top-railed structure and moves in a sliding manner in a sill groove in association with opening/closing of the car door. The door shoe 30 comprises; a shoe main body inserted into the sill groove; and bottom surface brushes 33 provided on a bottom surface 31e of the shoe main body facing a bottom portion of the sill groove. Further, the shoe main body is attached in a movable manner in a vertical direction with respect to the car door.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a door shoe for an elevator door.

  The elevator door that opens and closes the opening of the elevator car and the opening of the hall that constitute the elevator entrance / exit has an upper suspension structure, and a door shoe is attached to the lower end of the door. The door shoe has a function of reducing shaking at the time of opening and closing of the door by sliding and moving along a sill groove provided at the entrance and exit as the elevator door is opened and closed. Further, the door shoe may be required to have a function of preventing foreign matter such as pebbles and sand that have entered the sill groove to prevent the door from opening and closing abnormally.

  For example, Patent Document 1 discloses a door shoe for an elevator door in which both front and rear end surfaces in the sliding direction are inclined with respect to the bottom surface so that foreign matter that has entered the sill groove is scooped up and removed by the inclined surface. . Further, Patent Document 2 discloses a sill foreign material removing device provided with a brush provided at a lower portion of a car door and having a bristle tip contacting at least the bottom of a sill groove.

JP-A-9-301659 Japanese Patent Laid-Open No. 9-301661

  By the way, since the space | interval of the bottom part of a sill groove and the lower end of an elevator door generally changes according to the use condition of an elevator, the space | interval of the bottom part of a sill groove and the bottom face of a door shoe also changes. Similarly, the distance between the bottom of the sill groove and the tip of the brush attached to the car door also changes. In particular, when anti-vibration rubber is installed under the floor of the car, the distance between the bottom of the sill groove and the lower end of the elevator door varies greatly depending on the number of passengers. For this reason, in the conventional technique as disclosed in the above-mentioned patent document, there is a case where the foreign matter accumulated on the bottom of the sill groove cannot be removed.

  An object of the present invention is to provide a door shoe for an elevator door that can remove foreign matter accumulated on the bottom of the sill groove even when the distance between the bottom of the sill groove and the lower end of the elevator door changes.

  A door shoe for an elevator door according to the present invention is a door shoe that is attached to a lower end portion of an elevator door having a suspended structure and slides in a sill groove in accordance with opening and closing of the elevator door, and is a shoe body that is inserted into the sill groove And a brush-like member provided on the bottom surface of the shoe main body facing the bottom of the sill groove, and the shoe main body is attached to the elevator door so as to be movable in the vertical direction. And

  In the door shoe of the elevator door according to the present invention, the door shoe includes a support part for attaching the shoe body to the elevator door, the support part being fixed to the elevator door, and a vertical direction with respect to the fixed plate. And a movable plate connected to the shoe main body. Moreover, it is preferable that a side brush is provided on each side surface of the shoe body facing the side wall of the sill groove. Further, the front and rear surfaces of the shoe main body facing in the first direction along the sliding direction of the elevator door are curved with the center portion in the second direction orthogonal to the first direction and the vertical direction recessed inward. It is preferable.

  According to the door shoe according to the present invention, since the shoe body is attached to the elevator door so as to be movable in the vertical direction, the bottom portion of the sill groove even when the distance between the bottom portion of the sill groove and the lower end of the elevator door changes. It is possible to remove foreign matter accumulated on the surface. That is, the brush-like member provided on the bottom surface of the shoe main body is always in contact with the bottom of the sill groove. For this reason, for example, even when the vibration isolating rubber is compressed and the gap between the bottom of the sill groove and the lower end of the elevator door becomes large, the brush-like member contacts the bottom of the sill groove and accumulates at the bottom of the sill groove. Foreign matter can be removed.

  Also, if the side brushes are provided on each side of the shoe body, the door can be opened or closed when the door shoe collides with the side wall of the sill groove when the door shoe collides with a foreign object fitted in the sill groove. Inconveniences such as generation of abnormal noises are prevented.

It is a figure which shows the passenger car which is an example of embodiment. It is a figure which shows the door shoe which is an example of embodiment, and its vicinity. It is a perspective view of a door shoe which is an example of an embodiment. It is a perspective view of the door shoe which is another example of an embodiment. It is a perspective view of the door shoe which is another example of an embodiment.

  Hereinafter, an example of the embodiment will be described in detail. Since the drawings referred to in the description of the embodiment are schematically described, the dimensions and the like of each component of the embodiment should be determined in consideration of the following description. Further, it is assumed from the beginning that other embodiments are constructed by appropriately combining the components of the embodiment.

  In the embodiment described below, the door shoe 30 of the car door 12 installed in the car 11 is illustrated, but the door shoe according to the present invention can also be applied to a landing door. The door shoe according to the present invention is not limited to a center open type elevator door (car door / landing door), and may be applied to a side open type elevator door.

  In the present specification, the first direction of the door shoe means a direction along the sliding direction in which the elevator door slides. In the following description, the first direction is defined as the vertical direction, and the second direction orthogonal to the vertical direction and the vertical direction. The horizontal direction. Of the side surfaces of the door shoe facing in the vertical direction, the side surface facing in the traveling direction of the door when the door is closed is the front surface, and the side surface facing in the direction opposite to the traveling direction is the rear surface.

  Drawing 1 is a figure which looked at car 11 of elevator 10 which is an example of an embodiment from the landing side. As illustrated in FIG. 1, the elevator 10 includes a car 11 that moves up and down between landings installed on each floor in the hoistway. The passenger car 11 has an indoor space in which a user can get in. For example, the passenger car 11 moves up and down in a hoistway by driving a hoisting machine. An opening (not shown) that forms a boarding gate is formed on the side wall facing the landing of the car 11. The car 11 is provided with two car doors 12 for opening and closing the opening. The entrance / exit is an entrance / exit of the car 11 formed between the car 11 and the landing when the car 11 is stopped at the landing.

  The car door 12 is a center-open type upper suspension door. A hanger plate 13 is attached to the upper end of the car door 12, and a door shoe 30 is attached to the lower end. The car door 12 is suspended from the door rail 15 by the hanger roller 14 of the hanger plate 13, and the door shoe 30 fits into the sill groove 17 formed in the sill 16, thereby enabling stable sliding movement. On the side wall of the car 11 in which the opening is formed, the door rail 15 is installed above the opening, and the sill 16 is installed below the opening.

  The car door 12 is opened and closed by an opening / closing device 20. The opening / closing device 20 includes a motor 21, a pulley 22, and an arm 23, and is provided on the upper portion of the car 11. The car door 12 is opened and closed when the driving force of the motor 21 is transmitted to the connecting bar 24 attached to the hanger plate 13 via the pulley 22 and the arm 23. The car door 12 is provided with a vane 25 that engages with a landing door that opens and closes an opening of the landing, and the landing door is interlocked with the car door 12.

  The car door 12 slides along the door rail 15 and the sill 16. Both the door rail 15 and the sill 16 are long members arranged in parallel to each other along the horizontal direction. The threshold 16 is generally provided such that the top surface is at the same height as the lower end of the opening. The sill groove 17 formed in the sill 16 is a groove for guiding the door shoe 30. In the present embodiment, one sill groove 17 is formed straight over the entire length of the sill 16.

  A plurality of through-holes 18 are formed in the bottom portion 17b of the sill groove 17 for dropping foreign matter such as pebbles and sand that have entered the sill groove 17 into the hoistway. It is preferable that the through-hole 18 is formed in the longitudinal direction center part and longitudinal direction both ends of the threshold groove 17, respectively. For example, the through hole 18 is formed at a position overlapping the door shoe 30 in the vertical direction when the car door 12 is closed and fully opened.

  The door shoes 30 are respectively attached to both ends in the vertical direction at the lower ends of the two car doors 12. Each door shoe 30 is inserted into the sill groove 17 and moves in the sill groove 17 as the car door 12 opens and closes, thereby reducing shaking when the car door 12 is opened and closed. For example, the door shoe 30 carries the foreign matter that has entered the sill groove 17 to the position where the through hole 18 is formed, and removes it from the sill groove 17.

  An anti-vibration rubber (not shown) is preferably provided under the floor of the car 11. When the anti-vibration rubber is installed, for example, when the number of passengers increases, the anti-vibration rubber is greatly compressed and the position of the sill 16 is lowered. That is, according to the number of passengers, the distance between the bottom 17b of the sill groove 17 and the lower end of the car door 12 changes.

  Hereinafter, the door shoe 30 as an example of the embodiment will be described in detail with further reference to FIGS. 2 and 3. FIG. 2 is a view showing the door shoe 30 and the vicinity thereof, and FIG. 3 is a perspective view of the door shoe 30.

  As shown in FIGS. 2 and 3, the door shoe 30 includes a shoe main body 31 inserted into the sill groove 17 and a bottom brush 33 provided on the bottom surface 31 e of the shoe main body 31 facing the bottom portion 17 b of the sill groove 17. Prepare. The door shoe 30 further includes a support plate 32 for attaching the shoe body 31 to the car door 12. The support plate 32 is a plate-like support portion that protrudes upward from the top surface 31 d of the shoe main body 31. As will be described in detail later, the shoe body 31 is attached to the car door 12 so as to be movable in the vertical direction, and the bottom brush 33 always contacts the bottom portion 17 b of the sill groove 17.

  The shoe main body 31 is a block-like member that is longer in the vertical and horizontal directions than the support plate 32. The shoe main body 31 is generally a rubber member, but the front surface 31b and the rear surface 31c that can come into contact with foreign matter that has entered the sill groove 17 may be made of a metal material. In the example shown in FIG. 2, the entire shoe body 31 and a part of the support plate 32 are inserted into the sill groove 17. The shape of the door shoe is not limited to the shape illustrated in FIGS. 2 and 3. For example, the shape of the support plate may be longer than the shoe body in the longitudinal direction.

  The shoe body 31 is fixed to the car door 12 via the support plate 32 and is disposed in the sill groove 17 in a state where it does not contact the bottom 17b of the sill groove 17. The shoe body 31 is longer in the vertical direction than in the horizontal direction, and has a certain horizontal length (width) along the vertical direction. The width of the shoe body 31 is smaller than the width of the sill groove 17, and a predetermined gap is formed between the side surface 31 a of the shoe body 31 and the side wall 17 a of the sill groove 17. The predetermined gap is preferably substantially the same on both lateral sides of the shoe body 31, and the lateral center of the shoe body 31 is located at the widthwise center of the sill groove 17.

  The front surface 31b and the rear surface 31c of the shoe main body 31 are inclined at an acute angle with respect to the bottom surface 31e. In other words, the front surface 31b and the rear surface 31c are inclined at an obtuse angle with respect to the top surface 31d and are directed obliquely upward. In the example shown in FIG. 3, both the front surface 31b and the rear surface 31c are formed flat. The side surface 31a has a trapezoidal shape in which the upper base is longer than the lower base. The foreign matter that has entered the threshold groove 17 is pushed by, for example, the front surface 31b or the rear surface 31c. By tilting the front surface 31b and the rear surface 31c in this manner, the foreign matter can be scooped up and easily removed from the threshold groove 17. Alternatively, even if the foreign object is strongly fitted in the sill groove 17, the foreign object can be scooped up and moved and dropped from the through hole 18.

  The bottom brush 33 provided on the bottom surface 31 e of the shoe main body 31 is a brush-like member protruding downward from the bottom surface 31 e of the shoe main body 31, and the tip of the brush is in contact with the bottom portion 17 b of the sill groove 17. As described above, the shoe body 31 is attached to the car door 12 so as to be movable in the vertical direction. For this reason, for example, even when the anti-vibration rubber installed under the floor of the car 11 is compressed and the distance between the bottom 17b of the sill groove 17 and the lower end of the car door 12 is increased, the bottom brush 33 is not removed from the sill groove 17. In contact with the bottom 17b. The foreign matter deposited on the bottom portion 17 b of the threshold groove 17 is carried to the position where the through hole 18 is formed by the bottom brush 33 and is removed from the through hole 18.

  The bottom brushes 33 are provided at both ends in the vertical direction on the bottom surface 31e of the shoe main body 31, respectively. Further, the bottom brush 33 has an elongated shape in the lateral direction and is provided over the entire width of the shoe body 31. The bottom brush 33 is configured, for example, by attaching a bristle material to the bottom surface 31e. In the present embodiment, two bottom brushes 33 having the same shape and dimensions are provided one at each longitudinal end of the bottom surface 31e. The bottom brush 33 may be provided detachably with respect to the shoe main body 31, or may be provided on the entire bottom surface 31e.

  The shoe body 31 is preferably attached to the car door 12 so as to be movable in the vertical direction by the function of the support plate 32. The support plate 32 includes a fixed plate 35 that is fixed to the car door 12 and a movable plate 36 that is supported so as to be slidable in the vertical direction with respect to the fixed plate 35 and connected to the shoe body 31. The fixing plate 35 is fixed to the car door 12 using, for example, a bolt (not shown). Two through holes 35 a into which bolts are inserted are formed in the upper portion of the fixed plate 35.

  The fixed plate 35 and the movable plate 36 are provided so as to overlap in the lateral direction. Two support pins 37 projecting toward the movable plate 36 are provided below the fixed plate 35. For example, the support pin 37 has a screw formed at one end thereof, and is attached to a screw hole formed at a lower portion of the fixing plate 35. The support pin 37 has a shaft portion 37a inserted into a long hole 38 to be described later, and a flange portion 37b formed at the other end portion. The flange portion 37 b is a portion that is thicker than the shaft portion 37 a and is hooked on the periphery of the long hole 38 to hold the movable plate 36.

  The movable plate 36 is connected to the top surface 31 d of the shoe body 31 and has a long hole 38 through which the shaft portion 37 a of the support pin 37 is inserted. The long hole 38 is a through hole that extends long in the vertical direction, and the amount of movement of the shoe body 31 in the vertical direction can be adjusted by the vertical length of the long hole 38. For example, the amount of movement of the shoe body 31 in the vertical direction can be increased as the vertical length of the long hole 38 is increased. The width of the long hole 38 is larger than the shaft part 37 a of the support pin 37, and the shaft part 37 a inserted through the long hole 38 can move in the vertical direction along the long hole 38.

  In this embodiment, the movable plate 36 is superposed on the fixed plate 35 fixed to the car door 12 and fixed to the screw hole of the fixed plate 35 through the shaft portion 37a of the support pin 37 in the long hole 38 of the movable plate 36. A support plate 32 is configured. The fixed plate 35 is held between the flange portion 37b of the support pin 37 and the fixed plate 35, and is attached to the fixed plate 35 so as to be movable in the vertical direction. For example, when the position of the sill 16 is lowered, the shoe main body 31 moves downward due to its own weight.

  The door shoe 30 further includes a side brush 34 provided on each side surface 31a of the shoe body 31 facing the side wall 17a of the sill groove 17. The side brush 34 is a brush-like member that protrudes laterally from both side surfaces 31a of the shoe main body 31, and the protruding length is preferably substantially the same on both lateral sides. The width of the door shoe 30 where the side brush 34 is provided is, for example, substantially the same as the width of the sill groove 17. In this case, the side brush 34 is always in contact with the side wall 17a of the sill groove 17, and dirt attached to the side wall 17a can be removed.

  When the door shoe 30 collides with a foreign object such as a pebble that is strongly fitted in the sill groove 17, a force that shifts to one side in the lateral direction may be exerted by the impact force. Thirty centers are maintained at the center of the sill groove 17. Even if the side surface 31a of the shoe main body 31 approaches the side wall 17a of the sill groove 17 due to a collision with pebbles or the like, the side surface brush 34 suppresses contact of the side surface 31a with the side wall 17a, making it difficult to open and close the car door 12. The trouble that abnormal noise occurs is prevented.

  The side brushes 34 are respectively provided at both ends in the longitudinal direction on each side surface 31 a of the shoe main body 31. The side brush 34 has an elongated shape in the vertical direction, and is provided from the upper end of the side surface 31a to the vicinity of the lower end. The side brush 34 can be provided on the entire side 31a, but is preferably provided on a part of the side 31a in order to reduce the frictional force with the side wall 17a. In the present embodiment, four side brushes 34 having the same shape and dimensions are provided one at each longitudinal end of each side surface 31a. Note that the side brush 34 may be detachably attached to the shoe main body 31.

  According to the door shoe 30 having the above-described configuration, the bottom brush 33 provided on the bottom surface 31e of the shoe main body 31 is always in contact with the bottom portion 17b of the sill groove 17. For this reason, for example, even when the vibration isolating rubber installed under the floor of the car 12 is compressed and the distance between the bottom 17b of the sill groove 17 and the lower end of the car door 12 is increased, the bottom brush 33 is not removed from the sill groove 17. The foreign matter deposited on the bottom portion 17b can be removed by contacting the bottom portion 17b.

  The above-described embodiment can be appropriately modified within a range not impairing the object of the present invention. For example, the shoe body itself may be provided with a structure in which a part of the shoe body is slidable in the vertical direction. Further, the front surface and the rear surface of the shoe main body may be formed along the vertical direction.

  FIG. 4 is a perspective view of a door shoe 40 that is another example of the embodiment. The door shoe 40 is different from the door shoe 30 in that a spring 47 is provided between a fixed plate 45 and a movable plate 46 constituting the support plate 42. The spring 47 is attached to a convex portion 48 with one end protruding from the upper portion of the fixed plate 45 toward the movable plate 46 and to the convex portion 49 with the other end protruding from the upper portion of the movable plate 46 to the opposite side of the fixed plate 45. It has been. The spring 47 has a function of urging the movable plate 46 toward the shoe main body 31 and pressing the bottom brush 33 against the bottom 17 b of the sill groove 17. The door shoe 30 presses the bottom brush 33 against the bottom portion 17b by the weight of the shoe main body 31, whereas the door shoe 40 presses the bottom brush 33 against the bottom portion 17b using the biasing force of the spring 47.

  FIG. 5 is a perspective view of a door shoe 50 which is another example of the embodiment. The door shoe 50 is different from the door shoe 30 in that the laterally central portions of the front surface 51b and the rear surface 51c are curved inwardly. The front surface 51b and the rear surface 51c are inclined at an acute angle with respect to the bottom surface 51e and are entirely curved. Further, the bottom brush 53 provided at both longitudinal ends of the bottom surface 51e has a curved shape along the front surface 51b and the rear surface 51c. In this case, foreign matters such as pebbles that come into contact with the front surface 51b or the rear surface 51c are likely to gather at the laterally central portion of the shoe main body 51, and the foreign materials can be easily pushed to the position where the through holes 18 are formed.

  DESCRIPTION OF SYMBOLS 10 Elevator, 11 Passenger car, 12 Car door, 13 Hanger plate, 14 Hanger roller, 15 Door rail, 16 Sill, 17 Sill groove, 17a Side wall, 17b Bottom, 18 Through-hole, 20 Opening / closing device, 21 Motor, 22 Pulley, 23 Arm, 24 Connecting bar, 25 Vane, 30 Door shoe, 31 Shoe body, 31a Side, 31b Front, 31c Rear, 31d Top, 31e Bottom, 32 Support plate, 33 Bottom brush, 34 Side brush, 35 Fixing plate, 35a Through Hole, 36 Movable plate, 37 Support pin, 37a Shaft, 37b Flange, 38 Long hole

Claims (4)

A door shoe that is attached to the lower end of an elevator door having a suspended structure and that slides along a sill groove as the elevator door opens and closes,
A shoe body inserted into the sill groove;
A brush-like member provided on the bottom surface of the shoe body facing the bottom of the sill groove;
With
The shoe body is a door shoe for an elevator door, which is attached to the elevator door so as to be movable in the vertical direction. A support for attaching the shoe body to the elevator door;
The said support part has a fixed plate fixed to the said elevator door, and a movable plate supported so that a slide movement is possible to the up-down direction with respect to the said fixed plate, and connected to the said shoe main body. Elevator door shoe.   The door shoe for an elevator door according to claim 1 or 2, wherein a side brush is provided on each side surface of the shoe main body facing the side wall of the sill groove.   The front and rear surfaces of the shoe main body facing in a first direction along the sliding direction of the elevator door are curved with a central portion in a second direction perpendicular to the first direction and the vertical direction recessed inward. Item 4. The door shoe for an elevator door according to any one of Items 1 to 3.