JP2016160031A - Elevator hall door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator hall door device which does not increase the friction resistance of a guide shoe more than a constant value even if the guide shoe of a hall door is pressed against a guide groove side face by the blow-in of air from outdoors, a draft airflow or the like.SOLUTION: This elevator hall door device comprises: a hall door panel which opens and closes an entrance of an elevator hall; a sill which is arranged at a lower part of the hall door panel, and has a guide groove extending to an opening direction of the entrance at an upper face; and a circular guide shoe which has a turning shaft at the hall door panel, and can turn along a guide groove of the sill.SELECTED DRAWING: Figure 1

Description

  The present embodiment relates to a door device provided in an elevator hall.

  2. Description of the Related Art Conventionally, landing doors have been provided at the entrances and exits of elevator landings, and are opened and closed in conjunction with the car doors provided on the car when getting on and off. A door sill is provided on the floor at the entrance of the elevator hall, and a guide shoe provided at the lower end of the hall door is received in the guide groove to guide the opening and closing of the hall door.

JP 2004-269218 A

  When such a landing door is installed near the entrance / exit of the first floor, it is pushed to the hoistway side by the wind pressure blown from outside. At this time, the guide shoe of the landing door is strongly pressed against the side of the guide groove of the sill, and the frictional resistance increases, which may hinder the opening and closing of the landing door. Further, the increase in the frictional resistance causes the guide shoe to be quickly deteriorated and the durability to be lowered.

  Further, particularly in a high-rise building, when there is a temperature difference between indoors and outdoors, the updraft (draft airflow) in the elevator hoistway is strong, and the pressure difference between the hoistway and the elevator hall becomes large. This pressure difference may cause the guide shoe to be strongly pressed against the side surface of the guide groove of the sill, resulting in the same trouble as described above. Such a problem becomes conspicuous in a landing door installed on the top floor.

  The present invention has been made in view of the above problems, and even if the guide shoe of the landing door is pressed against the side of the guide groove of the sill by blowing from outside or draft airflow, the friction resistance of the guide shoe is increased more than a certain amount. It is an object of the present invention to provide an elevator hall door device that is not allowed.

  The elevator hall door device according to the present embodiment includes a hall door panel that opens and closes an entrance hall of the elevator hall, a sill that is provided below the hall door panel and has a guide groove that extends in the entrance direction of the hallway on the upper surface, and The hall door panel has a rotating shaft and includes a circular guide shoe that can rotate along the guide structure of the sill.

FIG. 1 is a front view showing an elevator hall door device according to the present embodiment. FIG. 2 is a perspective view showing a lower end portion and a threshold of the landing door panel in FIG. FIG. 3 is a cross-sectional view showing a lower end portion and a threshold of the landing door panel in FIG. FIG. 4 is a cross-sectional view showing a lower end portion and a sill of a landing door panel when receiving wind pressure from the elevator landing side. FIG. 5 is a view showing the door opening operation of the landing door panel in FIG. FIG. 6 is a diagram illustrating a main part of the elevator hall door device according to the second embodiment. FIG. 7 is a diagram illustrating a main part of the elevator hall door device according to the third embodiment. FIG. 8 is a cross-sectional view of the lower end of the landing door panel and the sill in FIG.

(Embodiment 1)
Hereinafter, the elevator hall door device according to the first embodiment will be described in detail with reference to the drawings.
FIG. 1 is a front view of the elevator hall door device 100 according to the first embodiment as viewed from the hoistway side. As shown in FIG. 1, the elevator hall is provided with a pair of landing door panels 1 a and 1 b that open and close a boarding gate (a landing doorway). Hangers 2a and 2b are attached to the upper ends of the landing door panels 1a and 1b, respectively. Two rotatable hanger rollers 3a and 3b are attached to the upper ends of the hangers 2a and 2b, respectively. A hanger case 4 is provided above the entrance / exit.

  A hanger rail 5, a driving pulley 6 and a driven pulley 7 are attached to the hanger case 4. The hanger rail 5 extends in the entrance direction of the entrance. On the hanger rail 5, hanger rollers 3a and 3b are placed. The driving pulley 6 and the driven pulley 7 are arranged away from each other in the entrance direction of the entrance / exit. The driving pulley 6 is rotated by driving of a driving device (not shown). A belt 8 is wound between the driving pulley 6 and the driven pulley 7. A tension is applied to the belt 8, and the belt 8 moves as the driving pulley 6 rotates.

  The landing door panels 1a and 1b are connected to the belt 8 via hangers 2a and 2b, respectively. The landing door panels 1 a and 1 b move in the opposite directions along the hanger rail 5 by the movement of the belt 8. Thereby, the entrance / exit is opened and closed. The hanger rollers 3 a and 3 b roll on the hanger rail 5 when the landing door panels 1 a and 1 b move along the hanger rail 5.

  On the other hand, two guide shoes 9a and 9b are attached to the lower ends of the landing door panels 1a and 1b, respectively. A sill 10 is provided below the landing door panels 1a and 1b. The sill 10 is provided with a guide groove 11 extending in the entrance direction of the entrance. The guide shoes 9 a and 9 b move along the guide groove 11 when the landing door panel 1 moves along the hanger rail 5.

  FIG. 2 is a perspective view showing a lower end portion of the landing door panel 1a and the sill 10 of FIG. FIG. 3 is a cross-sectional view showing the lower end portion of the landing door panel 1a and the sill 10 along the one-dot chain line A-A 'in FIG.

  As shown in FIGS. 2 and 3, the landing door panel 1 a includes a surface member 101 a that stands vertically with respect to the sill 10 and extends in the entrance direction of the entrance, and a pair that extends from both ends in the width direction of the surface member 101 a to the hoistway side. Side surface member 102a and a back surface member 103a extending from the end of the side surface member 102a on the hoistway side so as to face the surface member 101a. The surface on the elevator hall side of the surface member 101a is a design surface. A support member 104a is attached to the lower end of the surface of the surface member 101a on the hoistway side.

  The guide shoe 9a is a circular member, and is attached to the landing door panel 1a by a support member 104a and a pivot member 105a. The guide shoe 9a can be pivoted about the pivot member 105a as a pivot. A part of the circumferential surface of the guide shoe 9 a protrudes from the lower end of the landing door panel 1 a and is loosely fitted in the guide groove 11 of the sill 10.

Next, the operation of the elevator hall door device of Embodiment 1 will be described. In the following description, the case where the door opening operation of the landing door panel 1a is performed is described, but the same applies to the case where the door closing operation of the landing door panel 1a and the door opening / closing operation of the landing door panel 1b are performed.
FIG. 4 is a cross-sectional view showing the lower end portion of the landing door panel 1a and the sill 10 when receiving wind pressure from the elevator landing side. FIG. 5 is a view showing the door opening operation of the landing door panel 1a in FIG.

  As shown in FIG. 4, when receiving the wind pressure from the elevator hall side (FIG. 4, arrow Y), the landing door panel 1a is pushed to the hoistway side and is loosely fitted in the guide groove 11 of the guide shoe 9a. The portion 901a (hereinafter also referred to as “free fitting portion 901a”) is pressed against the side wall 111 of the guide groove 11 on the hoistway side. Friction occurs at the portion where the loosely fitting portion 901a of the guide shoe 9a and the side wall 111 of the guide groove 11 are in contact.

When the door opening operation of the landing door panel 1a is performed from such a state, as shown in FIG. 5, since the pivot shaft of the guide shoe 9a is in the landing door panel 1a, the door opening operation of the landing door panel 1a (FIG. 5). Along with the arrow Q), a moment for rotating the guide shoe 9a about the rotation axis acts on the guide shoe 9a, and the guide shoe 9a rotates in the direction in which the landing door panel 1a opens (FIG. 5, arrow T).
Thus, when the landing door panel 1a performs the door opening operation with the loosely fitting portion 901a of the guide shoe 9a pressed against the side wall 111 of the guide groove 11, the guide shoe 9a opens the door of the landing door panel 1a. Since it rotates in the direction, the frictional resistance with the side wall 111 of the guide groove 11 is not increased more than a certain value.

  The above description is the case where the landing door panel 1a receives wind pressure from the elevator hall side. However, when the landing door panel 1a receives wind pressure from the hoistway side, the loose fitting portion 901a of the guide shoe 9a is in the elevator hall of the guide groove 11. The operation is the same as that described above except that it is pressed against the side wall 112 on the side.

(Embodiment 2)
Next, the elevator hall door apparatus of Embodiment 2 is demonstrated.
FIG. 6 is a view of a lower end portion and a threshold of a landing door panel of the elevator landing door device according to the second embodiment as viewed from the hoistway side. As shown in FIG. 6, in the second embodiment, a plurality of recesses (dimples) 902a are formed on both side surfaces (surfaces facing the side walls 111 and 112) of the guide shoe 9a. Since the recesses 902a are formed on both side surfaces of the guide shoe 9a, the contact area between the guide shoe 9a and the side wall 111 or the side wall 112 of the guide groove 11 is reduced, and the frictional resistance is further reduced as compared with the first embodiment. Can do. The concave portion 902a only needs to be formed in a portion that contacts the side walls 111 and 112 of the guide groove 11.

  When the guide shoe 9a is supported on the landing door panel 1a so as to come into contact with the landing door panel 1a, only the side walls 111 and 112 of the guide groove 11 are formed by forming a recess 902a in the contact portion. In addition, the frictional resistance with the landing door panel 1a can be reduced.

(Embodiment 3)
Next, the elevator hall door apparatus of Embodiment 3 is demonstrated.
FIG. 7: is a figure of the lower end part and threshold of the landing door panel of the elevator landing door apparatus of Embodiment 3 seen from the hoistway side. FIG. 8 is a cross-sectional view of the lower end portion of the landing door panel and the sill along the one-dot chain line BB ′ in FIG. 7. As shown in FIGS. 7 and 8, in the third embodiment, recesses 903a are formed at regular intervals on the circumferential surface of the guide shoe 9a.

  Generally, since the upper surface of the guide groove of the sill is open, foreign matters such as dust are likely to enter the guide structure when a person gets on and off. If such foreign matter accumulates, it may interfere with the opening / closing operation of the landing door. According to the third embodiment, the concave portion 903a is formed on the circumferential surface of the guide shoe 9a, so that when the guide shoe 9a rotates, the foreign matter that has entered the guide groove 11 of the sill 10 can be scraped off. Accumulation of foreign matter in the groove 11 can be prevented.

  In the present embodiment, the elevator hall door device has been described in which two guide shoes are provided for each hall door panel, but the number of guide shoes is not particularly limited. Moreover, although this embodiment demonstrated the center double opening type elevator hall door apparatus, it can apply similarly also to a single opening type door apparatus. For this reason, the existing elevator hall door apparatus can be easily reassembled to the elevator hall door apparatus of the present embodiment with few modifications.

  As mentioned above, although several embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1a, b ... landing door panel 9a, b ... guide shoe 10 ... sill 11 ... guide groove 105a ... pivoting member (rotating shaft)
902a, 903a ... recess 100 ... elevator landing door device

Claims (6)

A landing door panel that opens and closes the entrance of the elevator landing,
A sill provided below the landing door panel and having a guide groove on the upper surface extending in the entrance direction of the entrance,
A circular guide shoe having a pivot shaft on the landing door panel and pivotable along the guide structure of the sill;
An elevator hall door device comprising:   The elevator landing door device according to claim 1, wherein the guide shoe is loosely fitted in a guide groove of the sill.   The elevator hall door device according to claim 1, wherein the guide shoe has a plurality of recesses.   The elevator hall door device according to claim 3, wherein the concave portion of the guide shoe is formed on a surface facing the side wall of the guide groove.   The elevator hall door device according to claim 3 or 4, wherein the recess of the guide shoe is formed on a circumferential surface.   The elevator landing door device according to any one of claims 1 to 5, wherein a part of a circumferential surface of the guide shoe protrudes from a lower portion of the landing door panel.

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