JP7678985B2 - Elevator - Google Patents

Description

The present invention relates to an elevator equipped with a holder that holds a door closing prevention device that prevents the landing door from closing.

The landing door is provided at the landing entrance and is configured to close the landing entrance when no external force is acting. Therefore, when it is necessary to keep the landing door open, for example for maintenance work, a door closing prevention device described in Patent Document 1 has been used. This door closing prevention device consists of a lower end side part having a thickness dimension equal to or less than the groove width of the first guide groove of the first threshold arranged at the lower edge of the elevator entrance, and an upper end side part that is integrally extended from the lower end side part and has a maximum thickness dimension set to be larger than the groove width of the first guide groove. In addition, the vertical cross-sectional shape of the lower end side part and the upper end side part is trapezoidal by making the thickness between the lower end side part and the upper end side part an inclined shape that expands toward the upper end side part. Furthermore, the longitudinal dimensions of the lower end side portion and the upper end side portion are set so that when the door closing prevention device is attached to or detached from the first guide groove of the first threshold, a sufficient gripping margin is provided for pulling the lower end side portion out of the first guide groove or forcing the lower end side portion into the first guide groove. In addition, the length is set so that when the lower end side portion and the upper end side portion are press-fitted into the first guide groove, a pressure contact area is obtained that can generate a sufficient frictional force to prevent the door from closing.

JP 2007-22748 A

Incidentally, when performing elevator maintenance work, the worker needs to take the door-closing prevention device to the work site. However, if the worker forgets the door-closing prevention device, the worker needs to find a way to keep the landing door open, for example by using a tool he or she has on hand. This leads to a decrease in workability when performing maintenance work.

Therefore, the present invention aims to provide an elevator that can suppress a decrease in workability when performing maintenance work.

The present invention relates to a door-closing prevention device that is temporarily used to prevent the closing of a landing door that opens and closes between an elevator landing and a hoistway by sliding, and the elevator is equipped with a holder that holds the door-closing prevention device that is provided separately from the landing door, and the holder is provided on the hoistway side of the landing door.

According to the above configuration, even if a worker forgets to bring the door-closing prevention device to the work site, the door-closing prevention device held by the holder can be used to prevent the landing door from closing. Also, because the holder is provided on the elevator shaft side of the landing door, the door-closing prevention device can be placed in a location that is not visible to users of the elevator.

In addition, in the present invention, the retainer may be disposed on the door-closing side of the landing door.

According to the above configuration, since the holder is positioned on the door-closing side of the landing door, the worker can easily remove the door-closing blocker held by the holder.

In addition, in the present invention, the door-closing blocking device may be made of a compressible elastic material, and the retainer may hold the door-closing blocking device in a compressed state.

According to the above configuration, the holder holds the door-closing block in a compressed state, so that it is possible to prevent the door-closing block from falling from the holder into the elevator shaft due to, for example, vibrations transmitted to the landing door.

In addition, in the present invention, the door closing prevention device and the retainer may be connected by a connecting member.

According to the above configuration, since the door closing prevention device and the holder are connected by the connecting member, it is possible to prevent, for example, the door closing prevention device from falling from the holder into the elevator shaft.

As described above, according to the present invention, the worker can prevent the landing door from closing by using the door closing prevention device supported by the retainer, thereby preventing a decrease in workability when performing maintenance work.

FIG. 1 is a diagram showing an overall outline of an elevator according to this embodiment. FIG. 2 is a view of the landing door in the embodiment as viewed from the elevator shaft side and an enlarged view of a main part. 3 is a cross-sectional view taken along line III-III in FIG. 2 and an enlarged view of a main portion. FIG. 4 is a diagram showing a state in which the landing door is open.

Below, we will explain an elevator 1 according to one embodiment of the present invention with reference to the drawings.

In the following description, the direction in which the landing doors 42 and the car doors 31 open and close is referred to as the "opening/closing direction X", the direction in which people and objects pass between the car 3 and the elevator landing 4 via the car-side entrance 3a and the landing-side entrance 40 is referred to as the "entrance/exit direction Y", and the direction in which the car 3 moves up and down the hoistway 2 is referred to as the "ascending/descending direction Z". The opening/closing direction X, the entrance/exit direction Y, and the ascending/descending direction Z are perpendicular to each other. Note that since the car 3 moves up and down, the ascending/descending direction Z coincides with the up and down direction. Furthermore, in the opening/closing direction X, the side on which the landing doors 42 and the car doors 31 close is referred to as the "door-closing side", and the opposite side is referred to as the "door-opening side".

The important point about the elevator 1 of this embodiment is that it is equipped with a holder 7 that holds the door closing prevention device A, and a connecting member 8. For convenience of explanation, the basic configuration of the elevator 1 will be explained before explaining the holder 7 and the connecting member 8.

As shown in FIG. 1, elevator 1 includes a hoistway 2 defined by the walls of a building so as to extend in the ascending/descending direction Z, a car 3 that ascends and descends within hoistway 2, and an elevator hall 4 provided on a specific floor of the building. Note that multiple elevator halls 4 are provided in the ascending/descending direction Z.

The car 3 includes a box-shaped car body 30 with a car-side entrance 3a that opens on the front, and a car door 31 that opens and closes the car-side entrance 3a. The car door 31 is configured to be driven to open and close by the driving force of a door drive mechanism 3b (specifically, a motor) provided on the car body 30. Thus, the car door 31 is configured to close the car-side entrance 3a when the car 3 is ascending or descending in the elevator shaft 2, and to open and close the car-side entrance 3a when the car 3 has arrived at the elevator hall 4. The car door 31 in this embodiment is a so-called center-open type (double-swing type) door.

As shown in FIG. 1, the elevator hall 4 is provided with a hall-side entrance 40 provided in the wall separating the elevator hall 4 from the hoistway 2, a hall-side threshold 41 provided at the end of the hoistway 2, and a hall door 42 for opening and closing the hall-side entrance 40. The hall-side entrance 40 is an opening of a size corresponding to the car-side entrance 3a.

The landing side threshold 41 is for guiding the landing door 42 in the opening/closing direction X. As shown in FIG. 2, the landing side threshold 41 extends in the opening/closing direction X at the lower end of the landing side entrance/exit 40. The landing side threshold 41 is longer than the landing side entrance/exit 40 in the opening/closing direction X. A guide groove 410 is formed in the landing side threshold 41 so as to extend in the opening/closing direction X. This guide groove 410 is formed so as to span the entire area of the landing side threshold 41 in the opening/closing direction X.

The landing door 42 is for opening and closing the landing side entrance 40. As shown in FIG. 2, the landing door 42 includes a door body 420 that separates the elevator landing 4 from the hoistway 2, and a door drive unit 421 that drives the door body 420 in the opening and closing direction X. Note that the landing door 42 in this embodiment is a center-opening door that includes two door bodies 420, 420 that are similarly configured.

The door body 420 is made of a plate-like member. The door body 420 includes a door panel 420a extending in a plane direction perpendicular to the entrance/exit direction Y of the landing side entrance 40, and a door-closing side folded portion 420b and a door-opening side folded portion 420c provided on the edge of the door-closing side and the edge of the door-opening side of the door panel 420a, respectively. The door panel 420a in this embodiment is rectangular and elongated in the lifting direction Z. As shown in FIG. 3, the door-closing side folded portion 420b and the door-opening side folded portion 420c (not numbered in FIG. 3) each include a first portion 420d extending from the edge of the door panel 420a to the back side of the door panel 420a, and a second portion 420e extending from the first portion 420d toward the folded portions 420b and 420c on the opposite side.

As shown in FIG. 2, the door drive unit 421 includes a door rail 421a extending in the opening/closing direction X at an upper position of the landing side entrance 40 (specifically, the wall in the elevator 2), and a door hanger 421b that can reciprocate in the opening/closing direction X along the door rail 421a with the door panel 420a suspended. The door hanger 421b is attached to the door rail 421a. In this embodiment, two door hangers 421b, 421b are provided. The two door hangers 421b, 421b are configured to move in conjunction with the door opening side and the door closing side. Therefore, for example, when one door hanger 421b moves to the door closing side, the other door hanger 421b also moves to the door closing side. Furthermore, the door hanger 421b is configured to automatically move to the door closing side when no external force is applied.

In FIG. 2, the upper side of the door body 420 is hung from the door hanger 421b with the back surface of the door panel 420a positioned on the elevator shaft 2 side. The lower side of the door body 420 is fitted into the guide groove 410. In this way, the landing door 42 is positioned on the landing side threshold 41. Therefore, by moving the door hanger 421b, the door body 420 can slide to open and close the landing side entrance/exit 40.

The landing door 42 is provided with a locking device 5 that locks the landing door 42 when it is closed, and an unlocking device 6 that can unlock the lock set by the locking device 5. In this embodiment, the locking device 5 and the unlocking device 6 are provided on one of the landing doors 42 (the right side in FIG. 2).

The lock device 5 has a first engagement member 50 provided on the door rail 421a and a second engagement member 51 provided on the door hanger 421b. The first engagement member 50 is disposed between the two door hangers 421b, 421b. This first engagement member 50 has an engagement piece 500 that extends in the lifting/lowering direction Z.

2, the second engagement member 51 is configured to be displaceable between an engagement position where it engages with the first engagement member 50 and a release position where it releases the engagement with the first engagement member 50 by rotating around the entrance/exit direction Y. Specifically, the second engagement member 51 includes a hook 510 provided on the door-closing side and a shaft portion 511 provided to extend downward. In FIG. 2, the hook 510 abuts against the engagement piece 500 from the door-closing side, thereby engaging the second engagement member 51 with the first engagement member 50. Thus, the landing door 42 is locked in the door-closed state by the engagement between the first engagement member 50 and the second engagement member 51.

The unlocking device 6 is provided in the door body 420. The unlocking device 6 in this embodiment is a keyhole 6 penetrating the door panel 420a. As shown in FIG. 2, the keyhole 6 is located above the center of the door panel 420a in the lifting direction Z, specifically, below the shaft portion 511. The keyhole 6 is also located between the center of the door panel 420a in the opening and closing direction X and the second part 420e of the door closing side folded part 420b. Therefore, the keyhole 6 is located on the door closing side of the landing door 42. A key (not numbered) owned by the worker is inserted into the keyhole 6. This key is an axial member having a length that can be inserted into the keyhole. The key is also configured so that the tip in the insertion direction bends under its own weight. Therefore, as shown in FIG. 2, when the key is inserted into the keyhole 6 and the tip is bent under its own weight, the tip of the key abuts against the shaft portion 511 and the second engagement member 51 moves when the key is turned. In this way, the first engagement member 50 and the second engagement member 51 are disengaged, and the landing door 42 is unlocked.

The above is an explanation of the basic configuration of the elevator 1 of this embodiment. For the sake of convenience, before explaining the retainer 7 and the connecting member 8, the door closing prevention device A related to the retainer 7 and the connecting member 8 will be explained. After that, the retainer 7 and the connecting member 8 will be explained.

As described above, the door hanger 421b is configured to automatically move to the door-closing side when no external force is applied. Therefore, when no external force is applied, the landing door 42 closes the landing entrance 40. On the other hand, when performing maintenance on the elevator 1, it is necessary to keep the landing door 42 open. For this reason, a door-closing prevention device A is used to prevent the landing door 42 from closing when it moves to the door-closing side. This door-closing prevention device A is configured separately from the landing door 42. Furthermore, the door-closing prevention device A is used temporarily to prevent the landing door 42 from closing.

As shown in FIG. 4, the door-closing blocking device A of this embodiment is fitted into the guide groove 410 and abuts against the landing door 42 (specifically, the first portion 420d of the door-closing side folded portion 420b) from the door-closing side, thereby blocking the landing door 42 from closing. The door-closing blocking device A is made of a compressible elastic member (specifically, a short rubber hose). Specifically, the door-closing blocking device A can be compressed to reduce its diameter. The outer diameter of the door-closing blocking device A in the compressed state is shorter than the width of the guide groove 410. Therefore, the door-closing blocking device A is configured to be able to be placed in the guide groove 410 in the compressed state.

The holder 7 is for holding the door-closing blocking device A. The holder 7 is provided on the landing door 42. In this embodiment, the holder 7 is provided on the landing door 42 of each floor. As shown in Figures 2 and 3, the holder 7 has a support portion 70 configured to be able to support the door-closing blocking device A from below, and a storage portion 71 capable of storing the door-closing blocking device A.

The support part 70 is a member that extends in the entrance/exit direction Y and the opening/closing direction X. The support part 70 of this embodiment is configured as a plate-shaped member (specifically, a rectangular plate-shaped member whose length in the opening/closing direction X is longer than that in the entrance/exit direction Y). The support part 70 is provided on the back surface of the door panel 420a. Therefore, the retainer 7 is provided on the elevator shaft 2 side of the landing door 42. Furthermore, the length of the support part 70 of this embodiment in the opening/closing direction X is longer than the length of the door closing prevention device A. Therefore, the support part 70 of this embodiment is configured to be able to support the entire length of the door closing prevention device A. On the other hand, the length of the support part 70 of this embodiment in the entrance/exit direction Y is shorter than the outer diameter of the door closing prevention device A.

The storage section 71 is a member that surrounds the upper side of the support section 70 in the opening/closing direction X and the entrance/exit direction Y. As shown in FIG. 3, the storage section 71 in this embodiment is configured as a three-sided frame that surrounds the door-closing side, the door-opening side, and the elevator shaft 2 side. As shown in FIG. 2, the storage section 71 is disposed above the support section 70. Therefore, the holder 7 in this embodiment is configured as a box that is open on the top. The storage section 71 includes an entrance/exit wall section 710 that faces the door panel 420a in the entrance/exit direction Y, and a pair of opening/closing walls 711, 711.

The ingress/egress wall portion 710 is a member that extends in the opening/closing direction X and the lifting/lowering direction Z. The ingress/egress wall portion 710 is provided above the edge of the support portion 70 on the elevator shaft 2 side. As shown in Figures 2 and 3, the length of the ingress/egress wall portion 710 in this embodiment in the opening/closing direction X is approximately the same as the opening/closing direction X of the support portion 70. Therefore, the length of the retainer 7 in the opening/closing direction X is longer than the length of the door closing prevention device A. Furthermore, the length of the ingress/egress wall portion 710 in this embodiment in the lifting/lowering direction Z is longer than the outer diameter of the door closing prevention device A.

2 and 3, the pair of opening and closing walls 711, 711 are members extending in the entrance/exit direction Y and the lifting/lowering direction Z. The pair of opening and closing walls 711, 711 are provided above the edge of the door-opening side and the door-closing side of the support part 70, and face each other in the opening and closing direction X. The pair of opening and closing walls 711, 711 are connected to the entrance/exit wall part 710 and the door panel 420a in the entrance/exit direction Y. In addition, the pair of opening and closing walls 711, 711 in this embodiment have the same length in the lifting/lowering direction Z as the entrance/exit wall part 710. Therefore, the length of the storage part 71 in this embodiment in the lifting/lowering direction Z is longer than the outer diameter of the door closing blocking device A. Furthermore, the pair of opening and closing walls 711, 711 in this embodiment have the same length in the entrance/exit direction Y as the length of the support part 70 in the entrance/exit direction Y.

2, the retainer 7 of this embodiment is disposed between the door-closing side folded portion 420b and the door-opening side folded portion 420c (specifically, the second portion 420e of each) in the opening/closing direction X. Specifically, the retainer 7 is disposed between the center of the door panel 420a in the opening/closing direction X and the second portion 420e of the door-closing side folded portion 420b. Thus, the retainer 7 is disposed on the door-closing side of the landing door 42. In addition, the retainer 7 is disposed at a position away from the rotation trajectory of the key that rotates while inserted into the keyhole 6, which is the unlocking device 6. Specifically, the retainer 7 of this embodiment is disposed below the center of the door panel 420a in the lifting/lowering direction Z.

Furthermore, as shown in FIG. 3, the retainer 7 in this embodiment is shorter than the door-closing side folded-back portion 420b in the entrance/exit direction Y. Therefore, the retainer 7 is disposed between the second portion 420e and the door panel 420a in the entrance/exit direction Y (in other words, in the thickness direction of the landing door 42).

As shown in FIG. 3, the holder 7 holds the door-closing blocking device A. Here, in this embodiment, the length of the pair of opening/closing wall portions 711, 711 in the ingress/egress direction Y is shorter than the outer diameter of the door-closing blocking device A. Therefore, in this embodiment, the door-closing blocking device A is stored in the storage portion 71 by being held by the door panel 420a and the ingress/egress wall portion 710 with its length aligned with the opening/closing direction X and its outer diameter compressed. Therefore, the holder 7 in this embodiment holds the door-closing blocking device A with its outer diameter compressed.

As shown in FIG. 2, in this embodiment, when the holder 7 holds the door-closing blocking device A, a portion of the door-closing blocking device A is positioned above the storage portion 71. In this state, the door-closing blocking device A is spaced above the support portion 70.

The connecting member 8 connects the door-closing blocking device A and the holder 7. As shown in Figs. 2 and 3, the connecting member 8 in this embodiment is configured as a string-like member. One end of the connecting member 8 is fixed to the door-closing blocking device A, and the other end is tied and fixed to the holder 7 (in this embodiment, the opening and closing wall portion 711 on the door-closing side). The connecting member 8 is set to a length that allows the door-closing blocking device A held by the holder 7 to be moved toward the door-closing side beyond the door-closing side fold-back portion 420b. Therefore, the door-closing blocking device A can be positioned in the guide groove 410 on the door-closing side beyond the door-closing side fold-back portion 420b.

In the elevator 1 configured as described above, the door is prevented from closing as follows. Note that the door is prevented from closing, for example, before maintenance work for inspecting the elevator 1.

First, as shown in FIG. 2, an operator inserts a key into the keyhole 6 and then rotates the key so that the tip of the key abuts the shaft 511. This causes the shaft 511 to be pushed by the tip of the key around the entry/exit direction Y, causing the second engagement member 51 to rotate around the entry/exit direction Y. This disengages the first engagement member 50 from the second engagement member 51, and unlocks the landing door 42. Next, the operator moves the door body 420 toward the door-opening side to open the landing door 42.

Next, with the landing door 42 open, the worker puts his/her hand around the back side of the door panel 420a and removes the door-closing blocking device A from the holder 7. By removing the door-closing blocking device A from the holder 7, the door-closing blocking device A returns to its original state from its compressed state. Then, as shown in FIG. 4, the worker places the door-closing blocking device A in the guide groove 410 while compressing the outer diameter of the door-closing blocking device A again. As a result, the landing door 42 (specifically, the first portion 420d of the door-closing side folded portion 420b), which automatically moves to the door-closing side, comes into contact with the door-closing blocking device A. At this time, the friction between the door-closing blocking device A and the inside of the guide groove 410 prevents the landing door 42 from closing.

As described above, according to this embodiment, since the holder 7 is provided on the hoistway 2 side of the landing door 42, the door-closing blocking device A can be held in a location that is not visible to users of the elevator 1. Specifically, in this embodiment, the door-closing blocking device A is held in a state in which its outer diameter is compressed by the door panel 420a and the access wall portion 710, while the door-closing blocking device A is stored in the storage portion 71. Therefore, for example, the door-closing blocking device A can be prevented from falling from the storage portion 71 into the hoistway 2 due to vibrations transmitted from the landing door 42.

In addition, the length of the holder 7 in this embodiment in the opening/closing direction X is longer than the length of the door-closing blocking device A. Therefore, the holder 7 can hold the door-closing blocking device A with the length of the door-closing blocking device A aligned with the opening/closing direction X.

In addition, in this embodiment, when the door-closing blocking device A is held by the holder 7, a portion of the door-closing blocking device A is positioned above the storage section 71. This makes it easy to remove the door-closing blocking device A from the holder 7.

In addition, in this embodiment, the holder 7 includes a support portion 70 that is configured to be able to support the door-closing blocking device A from below. Therefore, even if the door-closing blocking device A held by the door panel 420a and the entrance wall portion 710 moves downward, for example, the door-closing blocking device A can be supported by the support portion 70. This prevents the door-closing blocking device A from falling into the elevator shaft 2.

In addition, in this embodiment, the door-closing blocking device A is held by the holder 7. Therefore, even if the worker forgets the door-closing blocking device A, the worker can use the door-closing blocking device A held by the holder 7 to prevent the landing door 42 from closing. Furthermore, the worker does not need to bring the door-closing blocking device A to the work site when performing maintenance work, which reduces the burden on the worker during work. In addition, in this embodiment, the holder 7 is provided on the landing door 42 on each floor. Therefore, the workload of the worker can be reduced no matter what floor the maintenance work is performed on.

In addition, in this embodiment, the retainer 7 is disposed between the center of the door panel 420a in the opening/closing direction X and the second portion 420e of the door-closing side folded portion 420b. Therefore, the retainer 7 is disposed on the door-closing side of the landing door 42. This allows the distance between the worker and the retainer 7 to be reduced, and when the worker reaches the back side of the door panel 420a, it is easy to remove the door-closing blocking device A from the retainer 7.

In addition, in this embodiment, the retainer 7 is positioned below the center of the door panel 420a in the lifting direction Z. This allows the distance between the retainer 7 and the guide groove 410 to be reduced, shortening the distance that the door closing blocking device A must be moved. This reduces the burden on the worker associated with moving the door closing blocking device A.

In addition, in this embodiment, the holder 7 is shorter than the door-closing fold-back portion 420b and the door-opening fold-back portion 420c in the entry/exit direction Y. This prevents the holder 7 from interfering with the opening and closing of the landing door 42. It also prevents the holder 7 from interfering with the car 3.

The retainer 7 in this embodiment is configured in a box shape that is open at the top. The retainer 7 is provided on the elevator shaft 2 side of the landing door 42. Therefore, the worker can grasp the holding position of the door closing prevention device A by reaching his/her hand to the back side of the door panel 420a and touching the retainer 7.

In addition, in this embodiment, the connecting member 8 connects the door-closing blocking device A and the holder 7. This prevents the door-closing blocking device A from falling into the hoistway 2. In addition, the other end of the connecting member 8 in this embodiment is connected to the opening/closing wall portion 711 on the door-closing side. This makes it easy to reach the connecting member 8. Therefore, even if the door-closing blocking device A falls into the hoistway 2, the connecting member 8 can be grasped with the hand to remove the door-closing blocking device A from the hoistway 2.

In addition, the length of the storage section 71 in this embodiment in the lifting direction Z is longer than the outer diameter of the door-closing block A. Therefore, the entire area of the door-closing block A can be stored in the storage section 71. Therefore, by storing the entire area of the door-closing block A in the storage section 71, the door-closing block A can be held by the holder 7 more stably.

In addition, in this embodiment, the keyhole 6, which is the unlocking device 6, is positioned above the center of the door panel 420a in the lifting direction Z, and the holder 7 is positioned away from the rotation trajectory of the key that rotates while inserted into the keyhole 6, which is the unlocking device 6. This prevents the holder 7 from interfering with the unlocking device 6 when unlocking the lock. Here, the holder 7 in this embodiment is positioned below the center of the door panel 420a in the lifting direction Z. This prevents the unlocking device 6 from getting in the way of the worker removing the door closing blocking device A from the holder 7.

In addition, in this embodiment, the keyhole 6 and the retainer 7 are positioned between the center of the door panel 420a in the opening/closing direction X and the second portion 420e of the door-closing side folded portion 420b. Therefore, when preventing the door from closing, the worker only needs to work on the door-closing side rather than the center of the door panel 420a in the opening/closing direction X, which reduces the worker's workload.

The present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit and scope of the invention.

In the above embodiment, the landing door 42 is a center-opening door. However, this is not limited to this, and the landing door 42 may be a single-opening door.

In the above embodiment, the support section 70 was a plate-like member whose length in the opening/closing direction X was longer than its length in the ingress/egress direction Y. However, this is not limited to the above, and for example, the length of the support section 70 in the opening/closing direction X may be the same as its length in the ingress/egress direction Y. Furthermore, the support section 70 may have a shape other than a rectangular shape, such as a triangular or semicircular shape. In this case, the shape of the storage section 71 may be changed to match the shape of the support section 70.

In the above embodiment, the length of the storage section 71 in the lifting direction Z is longer than the outer diameter of the door-closing blocking device A. However, this is not limited to the above, and the length of the storage section 71 in the lifting direction Z may be shorter than the outer diameter of the door-closing blocking device A. This allows, for example, the door-closing blocking device A to be supported by the support section 70 while a portion of the door-closing blocking device A is positioned above the storage section 71. Therefore, the door-closing blocking device A can be supported by the support section 70, and the door-closing blocking device A can also be easily removed from the storage section 71.

In addition, in the above embodiment, the length of the support part 70 and the pair of opening and closing wall parts 711, 711 in the ingress/egress direction Y is shorter than the outer diameter of the door-closing blocking device A. However, this is not limited to the above, and the length of the support part 70 and the pair of opening and closing wall parts 711, 711 in the ingress/egress direction Y may be longer than the outer diameter of the door-closing blocking device A. This allows the support part 70 and the storage part 71 to have some leeway in the ingress/egress direction Y, making it easier to insert and remove the door-closing blocking device A.

In the above embodiment, the retainer 7 is disposed below the center of the door panel 420a in the lifting direction Z. However, this is not limiting, and for example, the retainer 7 may be disposed at the center of the door panel 420a in the lifting direction Z or above the center. This allows the worker to remove the door closing blocking device A from the retainer 7 without crouching, making it easier to remove.

Here, if the retainer 7 is positioned above the center of the door panel 420a in the lifting/lowering direction Z, the unlocking device 6 and the retainer 7 can be positioned closer together, so that when preventing the door from closing, the worker can unlock the door using the unlocking device 6 and remove the door closing prevention device A from the retainer 7 without having to change his/her posture significantly.

In the above embodiment, the holder 7 holds only the door-closing blocking device A, but the present invention is not limited to this. For example, the holder 7 may be configured to hold items other than the door-closing blocking device A. For example, tools required for maintenance work may be stored in the storage section 71 and supported by the support section 70. This can further reduce the burden on the worker during work.

In the above embodiment, the holder 7 includes the support portion 70 and the storage portion 71. However, the present invention is not limited to this. For example, the holder 7 may include only the support portion 70. In this case, the support portion 70 supports the door-closing blocking device A, so that the holder 7 can hold the door-closing blocking device A. In this case, it is considered that one end of the connecting member 8 is connected to the support portion 70. The holder 7 may include only the storage portion 71. As a result, the door panel 420a and the storage portion 71 store the door-closing blocking device A in a compressed state in the entry/exit direction Y, so that the holder 7 can hold the door-closing blocking device A.

For example, the holder 7 may be configured as a container that is open at the top and is attached to the back surface of the door panel 420a by being adhesively fixed thereto.

The holder 7 may also hold the door-closing blocking device A by hooking it. In this case, for example, the door-closing blocking device A is configured in a hook shape, and the support part 70 is configured as a U-shaped member. The holder 7 may then be configured to hold the door-closing blocking device A by hooking it onto the support part 70.

For example, a magnet may be provided on the door closing prevention device A, and the device may be attached to the back surface of the door panel 420a by magnetic force to hold the device in place. In this case, the retainer 7 is an area of the door panel 420a made of a magnetic material. Furthermore, in this case, a magnetic member may be attached to the back surface of the door panel 420a, and this may serve as the retainer 7.

In the above embodiment, the connecting member 8 connects the door-closing blocking device A and the retainer 7. However, the connecting member 8 may not be provided, and the door-closing blocking device A and the retainer 7 may not be connected. This allows the worker to flexibly set the arrangement of the door-closing blocking device A relative to the guide groove 410. The connecting member 8 may also connect, for example, the door-closing blocking device A and the door panel 420a. In other words, the connecting member 8 only needs to connect the door-closing blocking device A and the periphery of the landing door 42 so that the door-closing blocking device A does not separate from the landing door 42 or the retainer 7.

1: elevator, 2: hoistway, 3: car, 30: car body, 31: car door, 3a: car side entrance/exit, 3b: door drive mechanism, 4: elevator landing, 40: landing side entrance/exit, 41: landing side threshold, 410: guide groove, 42: landing door, 420: door body, 420a: door panel, 420b: door closing side fold-back portion, 420c: door opening side fold-back portion, 420d: first part, 420e : Second part, 421: Door drive part, 421a: Door rail, 421b: Door hanger, 5: Locking device, 50: First engagement member, 500: Engagement piece, 51: Second engagement member, 510: Hook, 6: Unlocking device, 7: Retainer, 70: Support part, 71: Storage part, 710: Ingress/egress wall part, 711: Opening/closing wall part, 8: Connection member, A: Door closing prevention device, X: Opening/closing direction, Y: Ingress/egress direction, Z: Lifting/lowering direction

Claims (4)

A door-closing prevention device that is temporarily used to prevent the closing of a landing door that opens and closes between an elevator landing and a hoistway by sliding, the door-closing prevention device including a holder that is provided separately from the landing door and holds the door-closing prevention device in a state in which the landing door is not blocked from closing ,
The retainer is provided on the elevator shaft side of the landing door. The elevator according to claim 1, wherein the retainer is disposed on the door-closing side of the landing door. A door closing prevention device that is temporarily used to prevent the closing of a landing door that opens and closes between an elevator landing and a hoistway by sliding, the door closing prevention device being provided separately from the landing door and including a holder that holds the door closing prevention device;
The door closing prevention device is composed of a compressible elastic member,
The retainer is provided on the elevator shaft side of the landing door and retains the door closing prevention device in a compressed state. An elevator according to any one of claims 1 to 3, in which the door closing prevention device and the retainer are connected by a connecting member.