WO2012171141A1

WO2012171141A1 - Lift door anti-falling device and lift door with the same

Info

Publication number: WO2012171141A1
Application number: PCT/CN2011/000999
Authority: WO
Inventors: 中川淳一; 周强
Original assignee: 富士达株式会社
Priority date: 2011-06-16
Filing date: 2011-06-16
Publication date: 2012-12-20
Also published as: CN103635411A; JP5765645B2; CN103635411B; KR20140035355A; JP2014505643A; KR101853774B1

Abstract

A lift door anti-falling device (6) and a lift door device (1) with the same are disclosed. The lift door device (1) includes a flat plate portion (31) set along the inner wall (X4) of a structure body (X) for a lift well, guide rails (41) set on the inner surface of the flat plate portion (31), rollers (42) rolling along the rails (41), lift doors (2) opened and closed by connection with rollers (42) and the lift door anti-falling device (6) for preventing the lift doors (2) from falling. The lift door anti-falling device (6) has a side limiting portion (611) set between the rollers (42) and the flat plate portion (31) at least in closed state of the lift doors (2), thus avoiding the rollers (42) from shaking sidewards.

Description

Elevator door anti-shedding device and elevator door device having the same

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door preventing device for preventing an elevator door from falling off at each entrance and exit of a structure for a hoistway, and an elevator door device including the elevator door preventing device. In the prior art, as an elevator door apparatus provided in each of the entrances and exits of the structure for a hoistway, an elevator door apparatus (for example, Patent Document 1) having a structure along the hoistway is disclosed. a flat plate portion disposed on the inner wall; a guide rail disposed along the inner surface of the flat plate portion; a roller rolling on the guide rail; and an elevator door connected to the roller. If the elevator door device is used, the elevator door can be opened and closed by rolling the roller on the guide rail. Prior art literature

Patent Document 1: Japanese Patent Publication No. 2-310286 Publication No.

However, with the elevator door of Patent Document 1, for example, if a force is applied from the outer side (the landing side) to the inner side (the hoisting passage side), the elevator door is tilted or deformed. Further, if the car that is moving up and down on the hoistway is not located opposite the elevator door, the elevator door may fall off.

Accordingly, the present invention has been made in view of such circumstances, and an object thereof is to provide an elevator door preventing device and an elevator door device capable of preventing an elevator door from coming off.

Method of solving problems

In the elevator door preventing device of the present invention, the elevator door device is prevented from falling off in the elevator door device, and the elevator door device is provided with a flat plate portion disposed along the inner wall of the structure for the hoistway, along the flat a guide rail disposed on an inner surface of the plate portion, a roller that rolls on the guide rail, and an elevator door that is opened and closed by a connection with the roller, wherein the elevator door anti-drop device includes a side restriction portion, and the side restriction portion is at least In the state where the elevator door is closed, it is disposed between the roller and the flat plate portion, thereby restricting the roller from swinging sideways.

According to the elevator door fall prevention device of the present invention, the side restricting portion is disposed between the roller and the flat plate portion at least in a state where the elevator door is closed. Therefore, when the roller is swayed to the side, the side restricting portion abuts against the side of the roller, so that the roller can be restricted from swinging sideways.

Further, in the elevator door fall prevention device of the present invention, the side restricting portion is disposed to overlap at least the upper portion of the roller in the direction opposite to the roller and the flat portion.

According to the elevator door fall prevention device of this configuration, the side restricting portion is disposed to overlap at least the upper portion of the roller in the direction opposite to the roller and the flat plate portion. Therefore, when the lower portion of the roller (the portion abutting on the guide rail) swings toward the side as the base point, the side restricting portion abuts against the upper portion of the roller side, whereby the roller can be reliably restricted from swinging sideways.

Further, the elevator door fall prevention device according to the present invention may further include an upper restricting portion that is disposed above the roller at least in a state where the elevator door is closed, and restricts the roller from moving upward from the guide rail.

According to the elevator door fall prevention device of this configuration, the upper restricting portion is disposed above the roller at least in a state where the elevator door is closed. Thereby, when the roller is turned upward from the guide rail, the upper restricting portion abuts against the upper portion of the roller, whereby the roller can be restricted from moving upward from the guide rail.

Further, in the elevator door fall prevention device of the present invention, the side restricting portion may be provided in plurality in parallel with the plurality of rollers provided on one of the elevator doors.

Further, the elevator door apparatus according to the present invention is characterized in that the elevator door apparatus includes: a flat plate portion disposed along an inner wall of the structure for a hoistway; a guide rail disposed along an inner surface of the flat plate portion; and a roller that rolls on the guide rail; An elevator door that is opened and closed by a connection with a roller; the elevator door is prevented from falling off.

Effect of the invention

As described above, according to the elevator door preventing device and the elevator door device of the present invention, when the roller is swayed sideways, the side restricting portion abuts against the side of the roller, thereby restricting the roller from swinging sideways, and the result is achieved. It has an excellent effect of preventing the elevator door from coming off. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an overall front view showing an elevator door apparatus according to an embodiment of the present invention. Fig. 2 is an overall rear view showing the elevator door apparatus of the same embodiment.

Fig. 3 is a perspective view showing the main part of the elevator door apparatus of the same embodiment as seen from the back.

Fig. 4 is a perspective view showing the main part of the elevator door apparatus of the same embodiment as seen from the front side.

Fig. 5 is a right side view showing the main part of the elevator door apparatus of the same embodiment.

Fig. 6 is a schematic view showing the action of a comparative example of the elevator door apparatus of the same embodiment, wherein) shows an overall right side view, and (b) shows an enlarged right side view of the main part.

Fig. 7 is a schematic view for explaining the action of the same comparative example, wherein (a) shows the overall right side view, and (b) shows an enlarged right side view of the main part.

Fig. 8 is a schematic view for explaining the action of the same comparative example, wherein) shows an overall right side view, and (b) shows an enlarged right side view of the main part.

Fig. 9 is a schematic view for explaining the action of the same comparative example, wherein (a) shows the overall right side view, and (b) shows an enlarged right side view of the main part.

Fig. 10 is a schematic view showing the action of the elevator door apparatus of the same embodiment, wherein (a) shows the overall right side view, and (b) shows an enlarged right side view of the main part.

Fig. 11 is a schematic view showing the action of the elevator door apparatus of the same embodiment, wherein (a) shows the overall right side view, and (b) shows an enlarged right side view of the main part.

Figure 12 is a schematic view for explaining the action of the elevator door apparatus of the same embodiment, wherein (a) shows the overall right side view, and (b) shows an enlarged right side view of the main part.

Figure 13 is a schematic view for explaining the action of the elevator door apparatus of the same embodiment, wherein (a) shows the overall right side view, and (b) shows an enlarged right side view of the main part.

Fig. 14 is an inside perspective view of the main part of the elevator door apparatus according to another embodiment of the present invention as seen from the front.

Fig. 15 is a main portion view of an elevator door apparatus according to still another embodiment of the present invention, showing an inside perspective view as seen from the front.

Description of the reference numerals

1 , 10 elevator door installation 2 elevator door (door, landing door)

3 frame 4 support unit 5 Synchronization unit 6, 60, 600 Elevator door anti-drop device 7 Guide unit 8 holding unit

31 Flat section 41 Guide rail

42 Roller 43 Connector

61, 610 anti-shedding member 611, 613 lateral restraint

612, 614 upper limiter X hoistway structure

XI hoistway X2 landing

X3 Entrance and Exit X4 Inner Wall BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of an elevator door apparatus of the present invention will be described with reference to Figs. Further, before describing the respective configurations of the elevator door apparatus of the present embodiment, an elevator apparatus having an elevator door apparatus will be described.

As shown in FIG. 1 to FIG. 5, the elevator apparatus includes: a car (not shown) for a passenger; a tubular structure for the hoistway X having a lift for lifting the car inside Channel XI; a plurality of entrances and exits X3, which are provided on the hoistway structure X corresponding to the respective slabs X2; a plurality of elevator door devices 1 respectively opened and closed, a drive unit for lifting the car (not The illustration is not marked). In the following description, the elevator XI side is inside (inside) and the landing side X2 is outside (outside).

Each elevator door apparatus 1 of the present embodiment is provided with: a pair of elevator doors (which may be referred to as "layer doors", hereinafter also referred to as "doors") 2, 2, which are used to open and close the entrances and exits X3; Frame 3 on the structure X; support units 4, 4 which movably support the doors 2 to the frame 3. Further, the elevator door apparatus 1 is provided with a synchronizing unit 5 for synchronizing the pair of doors 2, 2.

Further, the elevator door apparatus 1 includes an elevator door preventing/detaching means (hereinafter, simply referred to as "anti-shedding means") 6 for preventing the respective doors 2 from coming off. Further, the elevator door apparatus 1 includes: a guide unit 7 that guides the lower end portion of each of the doors 2; and a holding unit 8 that holds the respective doors 2 in a state where each of the doors 2 closes the entrance and exit X3.

Each of the doors 2 includes a door main body 21 formed in a rectangular shape, and a guided portion 22 that protrudes downward from a lower end portion of the door main body 21 and is guided by the guiding unit 7. Further, the first door 2a and the first door 2b disposed outside the first door 2a are provided in the pair of doors 2, 2. Further, the first door ² a configuration as follows: By moving the car provided on the car door opened and closed (not shown unlabeled) to engage. The pair of doors 2, 2 are moved to one side, respectively, from the closed position (the position indicated by the solid line in FIGS. 1 and 2) of the closed entrance X3 to the open position of the open entrance X3 (double in FIGS. 1 and 2) The position indicated by the chain line moves, and moves from the open position to the closed position by moving to the other side, respectively. That is, the elevator door apparatus 1 of the present embodiment is generally referred to as a "side open" type by moving the pair of doors 2 and 2 in the same direction to open and close the entrance and exit X3.

When the pair of doors 2, 2 are in the closed position, the adjacent end portions in the width direction are arranged to overlap each other in the direction opposite to each other. Specifically, when the pair of doors 2, 2 are in the closed position, the one end portion of the first door 2a and the other end portion of the second door 2b are arranged to overlap each other. Further, when the pair of doors 2, 2 are in the open position, they are arranged to overlap each other in the direction opposite to each other.

The frame 3 includes a flat plate portion 31 that is disposed along the inner wall X4 of the structure X for the hoistway, and a fixing portion 32 that is fixed to the structure X for the hoistway. Further, the frame 3 is formed in an elongated shape along the direction in which the respective doors 2 move. Further, the frame 3 is disposed above the entrance and exit X3.

The flat plate portion 31 includes: an elongated flat plate main body M1 formed in a planar shape; and a groove portion 312 disposed along the longitudinal direction. Further, the flat plate main body 311 is in close contact with the inner wall X4 of the structure X for the hoistway. Further, a space is formed between the groove portion 312 and the inner wall X4.

The fixing portion 32 is formed in a flat plate shape and protrudes inward from the upper end portion of the flat plate main body 311. Further, the fixing portion 32 is fixed to the inner wall X4 via a connecting member (for example, an angular member, not shown, not shown).

Further, each of the support units 4 includes: a guide rail 41 disposed along the inner surface of the flat plate portion 31; a pair of rollers 42 and 42 placed on the guide rail 41 and rolling on the guide rail 41; and a pair of rollers 42, 42 and the door 2 The connecting body 43; a pair of auxiliary rollers 44, 44 that abut against the lower portion of the guide rail 41. Further, the support units 4, 4 are provided with a first support unit 4a for supporting the first door 2a and a second support unit 4b for supporting the second door 2b.

Each of the guide rails 41 is formed in an elongated shape along the direction in which the respective doors 2 move. Further, each of the guide rails 41 is disposed along the groove portion 312 of the flat plate portion 31. Further, each of the guide rails 41 is fixed to the flat plate portion 31 via bolts 45, 45. Further, the head of each bolt 45 is housed in the groove portion 312 of the flat plate portion 31.

The guide rail 41 of the first support unit 4a and the guide rail 41 of the second support unit 4b are disposed opposite to each other in the direction opposite to the pair of doors 2, 2. Specifically, the guide rail 41 of the first support unit 4a and the guide rail 41 of the second support unit 4b are arranged side by side and arranged in parallel in the longitudinal direction.

Further, since the bracket 46 is provided between the guide rail 41 of the first support unit 4a and the flat plate portion 31, the guide rail 41 of the first support unit 4a is disposed on the guide rail than the second support unit 4b. The inside of 41. Further, the guide rail 41 of the first support unit 4a is formed longer than the guide rail 41 of the second support unit 4b.

A concave portion 421 is provided on the outer peripheral portion of each of the rollers 42. Further, each of the rollers 42 is formed to have a thickness thicker than the thickness of each of the guide rails 41. Further, each of the rollers 42 is attached to an upper portion of the connecting body 43 formed in a flat plate shape, and is attached to the outer side surface of the connecting body 43. Further, the pair of rollers 42 and 42 are arranged side by side in the width direction of the connecting body 43, and are attached to the respective end portions in the width direction of the connecting body 43.

Each of the auxiliary rollers 44 is attached to the lower portion of the connecting body 43 and attached to the outer side of the connecting body 43. Further, the pair of auxiliary rollers 44, 44 are juxtaposed in the width direction of the connecting body 43, and are mounted on the respective end portions in the width direction of the connecting body 43. Further, each of the auxiliary rollers 44 abuts on the guide rail 41 by the upper portion, thereby restricting the respective rollers 42 from being directed upward from the guide rail 41.

Each of the auxiliary rollers 44 is attached to the outer side of the connecting body 43 while being mounted on the lower portion of the connecting body 43. Further, the pair of auxiliary rollers 44 and 44 are attached to the respective ends of the connecting body 43 in the width direction while being aligned in the width direction of the connecting body 43. And, each auxiliary roller 44,

The synchronizing unit 5 includes: an elongated base portion 51 fixed to an upper portion of the connecting body 43 of the second supporting unit 4b; a pair of pulleys 52 and 52 rotatably fixed to each end portion of the base portion 51; and a pair of pulleys An endless belt 53 on 52, 52; a connecting portion 54 connected to the connecting body 43 of the first supporting unit 4a at an inner portion of the belt 53. Further, the synchronizing unit 5 is provided with a fixing portion 55 for fixing the flat plate portion 31 of the frame 3 at an outer portion of the belt 53.

The fall prevention device 6 is provided with a pair of separation preventing members 61 and 61 which are arranged in parallel with the pair of rollers 42 and 42 provided in the respective doors 2. Further, the fall prevention members 61, 61 are provided with a pair of first fall prevention members 61a, 61a for preventing the first door 2a from coming off, and a pair of second fall prevention members 61b, 61b for preventing the second door 2b from coming off.

Each of the separation preventing members 61 is disposed opposite to the roller 42 in a state where the door 2 is in the closed position. Further, each of the fall prevention members 61 includes a side restricting portion 611 that restricts the roller 42 from swinging sideward in a state where the door 2 is in the closed position, and an upper restricting portion 612 that restricts the roller in a state where the door 2 is in the closed position. 42 is directed upward from the guide rail 41.

Each of the side restricting portions 611 is disposed outside the roller 42 in a state where the door 2 is in the closed position. Specifically, each of the side restricting portions 611 is in a state where the door 2 is in the closed position, It is disposed between the roller 42 and the flat plate portion 31. Further, each of the side regulating portions 611 is formed such that its width is substantially the same as the diameter of the roller 42.

The side regulating portion 611 of each of the first fall prevention members 61a is disposed so as to overlap the entire roller 42 in the direction opposite to the roller 42 and the flat plate portion 31 in a state where the door 2 is at the closed position. Further, by attaching the lower end portion of the side restricting portion 611 to the outer side surface of the guide rail 41, each of the first fall prevention members 61a is fixed to the guide rail 41.

The side regulating portion 611 of each of the second fall prevention members 61b is disposed so as to overlap the upper portion of the roller 42 in the direction opposite to the roller 42 and the flat plate portion 31 in a state where the door 2 is in the closed position. Further, by attaching the side restricting portion 611 to the flat plate portion 31, each of the second fall prevention members 61b is fixed to the flat plate portion 31.

Each of the upper restricting portions 612 is disposed above the roller 42 in a state where the door 2 is in the closed position. Further, each of the upper restricting portions 612 is formed in such a manner that the width thereof is substantially the same as the diameter of the roller 42. Further, each of the upper restricting portions 612 protrudes inward from the upper end portion of the side restricting portion 611.

The guiding unit 7 includes a first guiding portion 71 for guiding the guided portion 22 of the first door 2a, and a second guiding portion 72 for guiding the guided portion 22 of the second door 2b. Further, each of the guiding portions 71, 72 is formed in a groove shape along the direction in which the respective doors 2 move. Further, by inserting the guided portions 22 of the respective doors 2 into the respective guiding portions 71 and 72, the respective guiding portions 71 and 72 are in sliding contact with the outer surface of the guided portion 22 and the inner surface of the guided portion 22.

The holding unit 8 is provided with a movement preventing unit 81 for preventing the first door 2a from moving from the closed position to the open position. Further, the holding unit 8 is provided with an action unit 82 for applying a force to the second door 2a in the direction of the closed position.

The anti-moving unit 81 includes a hooking portion 812 that is attached to the other end portion of the connecting body 43 of the first supporting unit 4a via the elastic body 811, and a hooked portion 813 that is hooked by the hooking portion 812. The guide rail 41 of the support unit 4a is attached to the other end of the frame 3. Further, the movement preventing unit 81 is configured such that the elastic body 811 is elastically deformed by the engagement of the first door 2a with the car door, and the hooking portion 812 is released from the hooking portion 813.

The action unit 82 is composed of an elastic body. Further, the action unit 82 is configured such that one end portion thereof is connected to the other end portion of the connection body 43 of the second support unit 4b, and the other end portion is connected to the other end portion of the frame 3, thereby applying the second door 2b. The force to the other side.

The configuration of the elevator door apparatus 1 of the present embodiment is as described above, and the opening and closing operation of the door 2 of the elevator door apparatus 1 of the present embodiment will be described below. First, when each door 2 is in the closed position, one end of the first door 2a and the other end of the second door 2b overlap. Further, when the door 2 is in the closed position, the side restricting portion 611 of each of the fall prevention members 61 is disposed between the roller 42 and the flat plate portion 31, and the upper restricting portion 612 of each of the fall prevention members 61 is disposed above the roller 42.

Further, when each of the doors 2 is in the closed position, the hooking portion 812 hooks the hooked portion 813, and the acting unit 82 applies a force to the second door 2b in the other direction, so that the doors 2 are kept closed. position. When the car that lifts and lowers the elevator XI moves from the opposite side to the doors 2 and 2 and the first door 2a is engaged with the car door provided on the car, the hooking portion 812 is released. The portion 813 is in a state of hooking.

Thereafter, since the car door moves to one side, the first door 2a moves to the side together with the car door. In association with this, the pulleys 52, 52 and the base portion 51 are moved by the belt 53 fixed to the flat plate portion 31 by the fixing portion 55, so that the second door 2b fixed to the base portion 51 is also moved to the side in synchronization with the first door 2a. . Further, if the doors 2 are in the open position, the doors 2 are integrally overlapped in the direction opposite to each other.

Further, since each of the pulleys 52 functions as a movable pulley, the first door 2a moves at twice the speed of the second door 2b. That is, the distance moved by the first door 2a is twice the moving distance of the second door 2b. Therefore, the first door 2a is generally referred to as a "fast door" and the second door 2b is referred to as a "slow door".

Thereafter, if the car door moves to the other side, the first door 2a engaged with the car door moves to the other side together with the car door, and passes through the synchronizing unit 5, the second door 2b and the first door 2a. Synchronize to move to the other side. Further, if each of the doors 2 is in the closed position and the car door is released from engagement with the first door 2a, the hooking portion 812 will hook the hooked portion 813.

Next, the action of the elevator door apparatus 1 of the present embodiment for preventing the door 2 from falling off will be described. Specifically, the action of preventing the door 2 from falling off when the rigid body Y collides with the first door 2a from the outside (the station X2 side) to the inside (the elevator XI side) will be described.

First, before explaining the operation of the elevator door apparatus 1 according to the embodiment of the present invention, the operation of the elevator apparatus of the comparative example in which the fall prevention apparatus 6 is not provided will be described with reference to Figs. 6 to 9 . Further, in Figs. 6 to 9, the same reference numerals as those of Figs. 1 to 5 denote the same configurations or elements as those of the elevator door apparatus 1 of the above embodiment.

As shown in FIG. 6, in the middle of the vertical direction of the first door 2a, the rigid body Y collides from the outside to the inside. Then, as shown in FIG. 7, the roller 42 of the first support unit 4a abuts on the guide rail 41, Since the guided portion 22 of the first door 2a is in contact with the first guiding portion 71, the first door 2a is deformed such that its outer side surface is concave.

Along with this, the roller 42 is rocked with its lower portion abutting on the guide rail 41 as a base point. Specifically, the roller 42 is rocked in such a manner that its upper portion is inclined outward. Further, as shown in Fig. 8, when the first door 2a is deformed such that its outer side surface is further concave, the guided portion 22 is pulled out from the first guiding portion 71.

Thereafter, since the first door 2a is entirely moved inward, as shown in Fig. 9, the roller 42 is detached from the guide rail 41. Thereby, the first door 2a is detached. Further, as the first door 2a is separated from the rigid body Y, the elastic deformation-based deformation portion of the first door 2a is restored, but deformation due to plastic deformation occurs.

Next, the operation of the elevator door apparatus 1 of the present embodiment will be described. First, as shown in Fig. 10, the rigid body Y collides from the outside to the inside in the middle portion of the first door 2a in the vertical direction. Then, the roller 42 of the first support unit 4a abuts on the guide rail 41, and the guided portion 22 of the first door 2a abuts against the first guide portion 71. Therefore, as shown in Fig. 11, the first door 2a is externally The side is deformed in a concave manner.

Along with this, the roller 42 is rocked with the lower portion thereof abutting on the guide rail 41 as a base point. Specifically, the roller 42 is rocked in such a manner that its upper portion is inclined outward. With this, the outer upper portion of the roller 42 abuts against the side regulating portion 611 of the first fall prevention member 61a (the contact point is indicated by the point A in Fig. 11), so that the upper portion of the roller 42 can be restricted from being inclined outward by a predetermined angle or more. .

Then, the roller 42 is jumped upward from the guide rail 41, and as shown in Fig. 12, the inner upper portion of the roller 42 abuts against the upper restricting portion 612 of the first fall prevention member 61a (the point B is shown in Fig. 12). Pick up). Thereby, it is possible to restrict the roller 42 from jumping upward by a predetermined distance or more. At this time, the deformation based on the elastic deformation of the first door 2a is restored.

Further, if the roller 42 is returned to the guide rail 41 due to the weight of the first door 2a or the like, the first door 2a is supported in a state of being plastically deformed. Specifically, the roller 42 is mounted on the guide rail 41 and inserted into the first guide portion 71 by the guide portion 22. Thus, the first fall prevention member 61a prevents the first door 2a from coming off.

As described above, according to the elevator door apparatus 1 of the present embodiment, in a state in which the doors 2 are in the closed position, the side restricting portions 611 of the fall prevention members 61 are disposed between the rollers 42 and the flat plate portions 31, so that the rollers 42 are provided. When the side is rocked, the side restricting portion 611 abuts against the side of the roller 42. Therefore, it is possible to restrict the roller 42 from swinging sideways, so that it is possible to prevent the respective doors 2 from coming off. Further, according to the elevator door apparatus 1 of the present embodiment, the side regulating portion 611 is disposed to overlap the upper portion of the roller 42 in the direction opposite to the roller 42 and the flat plate portion 31. Therefore, when the lower portion of the roller (the portion abutting on the guide rail) swings toward the side as the base point, the side restricting portion abuts against the lateral upper portion of the roller, so that the roller can be reliably restrained from swinging sideways.

Further, according to the elevator door apparatus 1 of the present embodiment, the upper restricting portions 612 of the fall prevention members 61 are disposed above the rollers 42 in a state where the doors 2 are in the closed position. Thereby, when the roller 42 is turned upward from the guide rail 41, the upper restricting portion 612 abuts against the upper portion of the roller 42, so that the roller 42 can be restricted from moving upward from the guide rail 41.

Further, the elevator door apparatus and the elevator door preventing/detaching apparatus of the present invention are not limited by the above-described embodiments, and various modifications can be made without departing from the spirit and scope of the invention. Further, it is needless to say that the configuration, method, and the like of the various modifications described below can be arbitrarily selected, and the configuration, method, and the like of the above-described embodiments can be employed.

For example, in the elevator door apparatus 1 of the above-described embodiment, the configuration in which the door and the door 2, 2 are moved in the same direction to open and close the entrance and exit X3 has been described, but the configuration is not limited thereto. Specifically, as shown in Fig. 14, the elevator door apparatus 10 may be configured to open and close the entrance and exit by moving the pair of doors 2, 2 in opposite directions. The elevator door apparatus 10 is generally referred to as a "central open" type.

When the elevator door apparatus 10 shown in FIG. 14 is used, the connecting bodies 43, 43 connecting the rollers 42, 42 rolling on the guide rail 41 and the door 2 are connected to a synchronizing unit (not shown in FIG. 14), whereby a pair of doors 2, 2 synchronous movement. In addition, the entrance and exit are closed by the pair of doors 2, 2 facing away and the entrance is closed by the proximity of the pair of doors 2, 2.

Further, the elevator door fall prevention device 60 shown in Fig. 14 includes a pair of separation preventing members 61 and 61 which are arranged in parallel with the pair of rollers 42 and 42 provided on the respective doors 2. Further, as shown in Fig. 14, each The fall prevention member 61 includes a side restricting portion 611 disposed between the flat plate portion 31 of the frame 3 and the roller 42 for restricting the rolling of the roller 42 to the side when the door 2 is in the closed position; the upper restricting portion, It is disposed above the roller 42 to restrict the roller 42 from moving upward from the guide rail 41.

Further, in the elevator apparatus 1 of the above-described embodiment, the configuration in which the connecting body 43 is disposed inside the guide rail 41 has been described, but the configuration is not limited thereto. For example, the connection body may be disposed outside the guide rail 41 and the roller 41 and the door 2 may be connected to each other. Further, in the elevator apparatus 1 of the above-described embodiment, the configuration in which the pair of rollers 42 and 42 are provided in each of the doors 2 has been described, but the configuration is not limited thereto. For example, one wheel can be set for one door, and more than three can be set.

Further, in the elevator apparatus 1 of the above-described embodiment, the configuration of the pair of doors 2, 2 is described, but the configuration is not limited thereto. For example, the elevator apparatus may have one door configuration, and three or more doors may be provided.

Further, in the elevator apparatus 1 and the elevator door fall prevention apparatus 6 of the above-described embodiment, the configuration of the same number of the fall prevention members 61, ... and the rollers 42, has been described, but the configuration is not limited thereto. For example, the anti-drop member may be disposed only in correspondence with the predetermined roller 42. Further, as shown in FIG. 15, the fall prevention members 610 and 610 are formed in an elongated shape and disposed across the pair of rollers 42 and 42. Also.

In the elevator door fall prevention device 600 shown in Fig. 15, a pair of rollers 42, 42 provided on the respective doors 2 have an anti-drop member 610. Further, as shown in FIG. 15, each of the separation preventing members 610 includes a side regulating portion 613 disposed between the flat plate portion 31 of the frame 3 and each of the rollers 42, for restricting the rollers in a state where the door 2 is in the closed position. 42 is swayed to the side; the upper restricting portion 614 is disposed above each of the rollers 42 to restrict the rollers 42 from moving upward from the guide rail 41.

Further, in the elevator apparatus 1 and the elevator door fall prevention apparatus 6 of the above-described embodiment, the configuration in which the side restricting portions 611 are disposed between the roller 42 and the flat plate portion 31 in a state where the respective rollers 42 are in the closed position is described. However, it is not limited to this configuration. For example, as shown in FIG. 15, the following configuration may be adopted: even in a state between the open position and the closed position (that is, when moving between the open position and the closed position), the side restricting portion 613 is disposed on the roller. The manner between the 42 and the flat plate portion 31 is formed to be elongated along the direction in which the respective doors 2 move.

Further, in the elevator apparatus 1 and the elevator door fall prevention apparatus 6 of the above-described embodiment, the configuration in which the upper restricting portion 612 is disposed above the roller 42 in the state in which the respective rollers 42 are in the closed position has been described, but the configuration is not limited thereto. . For example, as shown in FIG. 15, the following configuration may be such that the upper restricting portion 614 is disposed on the roller 42 even in a state between the open position and the closed position (that is, when moving between the open position and the closed position). The upper manner is formed in an elongated shape along the direction in which the respective doors 2 move.

Further, in the elevator apparatus 1 and the elevator door fall prevention apparatus 6 of the above-described embodiment, the side restricting portion 611 and the upper restricting portion 612 are integrally formed. That is, one component (anti-drop member 61). However, it is not limited to this configuration. For example, the side restraining portion and the upper restricting portion may be configured as separate members.

Further, in the elevator apparatus 1 and the elevator door fall prevention apparatus 6 of the above-described embodiment, the side restricting portion 611 is fixed to the flat plate portion 31 or the guide rail 41, and the roller moves with the movement of the door 2 42 is displaced relative to the side restriction portion 611. However, it is not limited to this configuration. For example, the side restraining portion may be fixed to the roller 42.

Claims

Claim

An elevator door preventing device for preventing an elevator door from falling off in an elevator door device, the elevator door device including a flat plate portion disposed along an inner wall of the structure for a lifting passage, and a guide rail disposed along an inner surface of the flat plate portion a roller that rolls on a guide rail, and an elevator door that is opened and closed by a connection with the roller, characterized in that

The elevator door fall prevention device includes a side restricting portion that is disposed between the roller and the flat plate portion at least in a state where the elevator door is closed, thereby restricting the roller from swinging sideways.

The elevator door fall prevention device according to claim 1, wherein the side restricting portion is disposed to overlap at least the upper portion of the roller in a direction opposite to the roller and the flat plate portion.

The elevator door fall prevention device according to claim 1 or 2, wherein the elevator door fall prevention device includes an upper restricting portion that is disposed above the roller at least in a state where the elevator door is closed, and is restricted The roller is facing away from the rail.

The elevator door fall prevention device according to claim 1 or 2, wherein the side restricting portion is provided in plurality in parallel with the plurality of rollers provided on one of the elevator doors.

5. An elevator door apparatus comprising: a flat plate portion disposed along an inner wall of a structure for a hoistway; a guide rail disposed along an inner surface of the flat plate portion; a roller that rolls on the guide rail; An elevator door that is opened and closed by connection with a roller; the elevator door anti-drop device according to claim 1 or 2.