Platform doors and elevators

Abstract

To provide a landing door capable of reducing or preventing damage even when force is applied to a safety fence, and an elevator comprising the landing door.SOLUTION: A landing door comprises a pair of door bodies and a safety fence. The safety fence can be transformed into a storage state where the safety fence faces back surfaces of the pair of door bodies and an installation state where the safety fence is placed at an entrance / exit. A pair of connection members for the safety fence are attached to the back surfaces of the pair of door bodies. A pair of rotating members are connected to the pair of connection members. A plurality of coupling bars couple the pair of rotating members and a pair of strut members. A safety bar is rotatably supported by one of the pair of strut members and can be connected to the other of the pair of strut members. A groove insertion protrusion is attached to lower parts of the pair of strut members. When the safety fence is transformed into the installation state, the pair of strut members are located between the pair of door bodies, and the groove insertion protrusion is inserted into a sill groove in which the pair of door bodies are movably engaged.SELECTED DRAWING: Figure 7

Description

Technical Field

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[0001] The present invention relates to a landing door and an elevator.

Background Art

[0002] When performing maintenance inspection work on an elevator, the landing door provided at the landing of a building may be opened for the work. When performing work with the landing door opened in this way, it is necessary for workers and others other than workers to pay attention to the opening of the landing door. Patent Document 1 describes an opening device for a landing door of an elevator.

[0003] The landing door opening device described in Patent Document 1, after opening the landing door, removes the lever stored on the back surface of the landing door from the holding bracket and lays it horizontally to bridge the lever over the opening part of the landing door. Thereby, at the time of elevator inspection, the landing door is easily and surely held in an open state, and the opening part of the landing door is closed to prevent entry of general passengers.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0007] To solve the above problems and achieve the objectives of the present invention, the landing door is configured to open and close an entrance / exit communicating with the elevator shaft. The landing door comprises a pair of door bodies and a safety fence provided on the pair of door bodies. The safety fence can be transformed between a stored state, where it faces the back surface of the pair of door bodies that face the elevator shaft, and an installed state, where it is positioned between the pair of door bodies when the entrance / exit is open. The safety fence comprises a pair of connecting members, a pair of rotating members, a pair of support members, a plurality of connecting bars, a safety bar, and groove insertion projections. The pair of connecting members are attached to the back surfaces of a pair of door bodies. The pair of rotating members are connected to the pair of connecting members and are rotatable about an axis extending vertically. The pair of support members are horizontally opposed to the pair of rotating members and extend vertically. The plurality of connecting bars connect the pair of rotating members to the pair of support members. The safety bar is rotatably supported on one of the pair of support members and is connectable to the other of the pair of support members. The groove insertion projections are attached to the lower parts of the pair of support members. When the safety fence is deformed into its installed state, the pair of support members are located between the pair of door bodies, and the groove insertion projections are inserted into sill grooves that movably engage with the pair of door bodies.

[0008] An elevator comprises a car that moves up and down within a hoistway, and double-leaf landing doors that open and close an entrance communicating with the hoistway. The landing doors consist of a pair of door bodies and the aforementioned safety fences provided on the pair of door bodies. [Effects of the Invention]

[0009] According to the above configuration of the boarding door, the safety barrier can be prevented from being damaged when pushed. Furthermore, issues, configurations, and effects other than those mentioned above will be clarified by the following description of the embodiments. [Brief explanation of the drawing]

[0010] [Figure 1]This is an overall configuration diagram of an elevator according to one embodiment of the present invention. [Figure 2] This is a side view showing the elevator car of an elevator according to one embodiment of the present invention stopped at an arbitrary floor. [Figure 3] This is a rear view of the landing door when the safety fence according to one embodiment of the present invention is transformed into a retracted state. [Figure 4] This is a cross-sectional view of a landing door when the safety fence according to one embodiment of the present invention is transformed into a retracted state. [Figure 5] This is a cross-sectional view of a landing door when the rotating member of a safety fence according to one embodiment of the present invention is pulled out towards the hoistway. [Figure 6] This is a cross-sectional view of a landing door when a safety fence according to one embodiment of the present invention is transformed into an installed state. [Figure 7] This is a rear view of the landing door when the safety fence according to one embodiment of the present invention is transformed into an installed state. [Modes for carrying out the invention]

[0011] The following describes a landing door and elevator according to one embodiment of the present invention. Note that common components in each figure are denoted by the same reference numerals.

[0012] 1. One Embodiment [Elevator] First, the configuration of an elevator according to one embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 is an overall configuration diagram of an elevator according to one embodiment. Figure 2 is a side view showing the elevator car stopped at an arbitrary floor.

[0013] As shown in Figure 1, elevator 1 is installed in a hoistway 110 formed within the building structure. Elevator 1 comprises a car 120 for carrying people and luggage, a main rope 130, a counterweight 140, a hoisting machine 100, and landing doors 211A, 211B (see Figure 2). A machine room 160 is provided at the top of the hoistway 110.

[0014] The hoist 100 is arranged in the machine room 160. A main rope 130 is wound around the hoist 100. The hoist 100 is a device that winds up the main rope 130 to raise and lower the car 120. A deflecting pulley 150 is provided near the hoist 100. The main rope 130 is mounted on the deflecting pulley 150.

[0015] The car 120 is formed in a hollow substantially rectangular parallelepiped shape. The car 120 is connected to the counterweight 140 via the main rope 130. When the hoist 100 winds up the main rope 130, the car 120 and the counterweight 140 move up and down in opposite directions to each other.

[0016] The mass of the counterweight 140 is set to be approximately the same as the mass of the car 120 when there is no load.

[0017] As shown in FIG. 2, the car 120 has a car compartment 10 where people and objects get on and off, a pair of car doors 11A, 11B, a car-side door unit 12, and a car-side door sill 13.

[0018] An opening that is opened and closed by a pair of car doors 11A, 11B is provided on one side of the car compartment 10. People and objects enter and exit the car 120 through the opening of the car compartment 10. The car-side door unit 12 is provided at the upper end in the vertical direction at the opening of the car compartment 10. The car-side door sill 13 is provided at the lower end in the vertical direction at the opening of the car compartment 10. <00​​​​ The car-side door unit 12 includes a car-side door rail 15, a pair of door hangers 21A and 21B, an endlessly formed transmission belt (not shown), and a drive unit (not shown) for circulating the transmission belt. The car-side door rail 15 extends along the opening and closing (movement) direction of the pair of car doors 11A and 11B.

[0021] Door hanger 21A is provided at the upper vertical end of car door 11A. Door hanger 21B is provided at the upper vertical end of car door 11B. A movable roller 24 is rotatably provided on each of the pair of door hangers 21A and 21B. The movable roller 24 slidably engages with the car-side door rail 15.

[0022] A pair of door hangers 21A and 21B are connected to a transmission belt. When the drive unit circulates the transmission belt, the pair of cage doors 11A and 11B move towards each other in the door-opening direction or away from each other in the door-closing direction via the pair of door hangers 21A and 21B.

[0023] The elevator car door 11A is equipped with an elevator car-side locking mechanism 30. The elevator car-side locking mechanism 30 locks the elevator car door 11A from moving in the door-opening direction. The elevator car-side locking mechanism 30 maintains the closed state of the pair of elevator car doors 11A and 11B. The elevator car-side locking mechanism 30 also engages with the landing-side locking mechanism 230 of the landing door 211A, which will be described later.

[0024] Each floor of the building structure is provided with a landing 101 where the elevator car 120 stops. The landing 101 is provided with an entrance / exit 102 for people and objects to enter and exit the elevator car 120. The entrance / exit 102 is formed in the shape of a vertically elongated rectangle. The entrance / exit 102 is an opening that communicates with the elevator shaft 110.

[0025] The entrance / exit 102 is equipped with a pair of landing doors 211A and 211B, a landing-side door unit 212, and a landing-side door sill 213. The pair of landing doors 211A and 211B open and close the entrance / exit 102. The landing-side door unit 212 is located at the upper end of the entrance / exit 102 in the vertical direction. The landing-side door sill 213 is located at the lower end of the entrance / exit 102 in the vertical direction.

[0026] The pair of landing doors 211A and 211B are double-leaf doors. Each of the pair of landing doors 211A and 211B is formed in a rectangular shape that is longer in the vertical direction. Sliders (not shown) are provided at the lower ends of the pair of landing doors 211A and 211B in the vertical direction. The sliders slidably engage with sill grooves provided in the landing-side door sill 213. The pair of landing doors 211A and 211B are movably supported by the landing-side door unit 212 and the landing-side door sill 213.

[0027] The landing-side door unit 212 includes a landing-side door rail 215, a pair of door hangers 221A and 221B, a landing-side locking mechanism 230, and an endlessly formed transmission belt (not shown). The landing-side door rail 215 extends along the opening and closing (movement) direction of the pair of landing doors 211A and 211B.

[0028] Door hanger 221A is provided at the upper vertical end of landing door 211A. Door hanger 221B is provided at the upper vertical end of landing door 211B. A movable roller 224 is rotatably mounted on each of the pair of door hangers 221A and 221B. The movable roller 224 slidably engages with the landing-side door rail 215.

[0029] A pair of landing doors 211A and 211B are connected to a transmission belt. As the transmission belt moves in a circular motion, the pair of landing doors 211A and 211B move towards each other in the door-opening direction or away from each other in the door-closing direction via a pair of door hangers 221A and 221B.

[0030] The landing-side locking mechanism 230 is provided on the door hanger 221A. The landing-side locking mechanism 230 locks the pair of landing doors 211A and 211B from moving in the door-opening direction. The landing-side locking mechanism 230 holds the pair of landing doors 211A and 211B in the closed position.

[0031] When the elevator car 120 stops at any floor, the car-side door unit 12 and the landing-side door unit 212 face each other. Then, the car-side locking mechanism 30 and the landing-side locking mechanism 230 face each other. Then, the car-side locking mechanism 30 engages with the landing-side locking mechanism 230.

[0032] Next, when the drive unit (not shown) of the car-side door unit 12 is driven and the pair of car doors 11A and 11B move in the door-opening direction so that they separate from each other, the car-side locking mechanism 30 is unlocked by the engagement portion with the landing-side locking mechanism 230. Also, when car door 11A moves in the door-opening direction, the landing-side locking mechanism 230 is unlocked by the engagement portion with the car-side locking mechanism 30.

[0033] Subsequently, the pair of landing doors 211A and 211B move in the door-opening direction together with the pair of car doors 11A and 11B. Then, the door-opening operation of the pair of car doors 11A and 11B and the pair of landing doors 211A and 211B is completed.

[0034] [Platform door configuration] Next, the configuration of the pair of landing doors 211A and 211B will be explained with reference to Figures 3 and 4. Figure 3 is a rear view of the pair of landing doors 211A and 211B when the safety fence is retracted. Figure 4 is a cross-sectional view of landing door 211A when the safety fence is retracted.

[0035] As shown in Figure 3, the pair of landing doors 211A and 211B have a pair of door bodies 251A and 251B and a safety fence 260 attached to the pair of door bodies 251A and 251B.

[0036] The pair of door bodies 251A and 251B are each formed in a rectangular shape that is longer in the vertical direction. The pair of door bodies 251A and 251B have a front surface facing the landing 101 (see Figure 2) and a back surface 251a facing the elevator shaft 110 (see Figure 2). Two horizontal reinforcements 252 and a vertical reinforcement 253 are provided on the back surface of the door bodies 251A and 251B.

[0037] The two lateral reinforcements 252 are positioned opposite each other with an appropriate distance between them in the vertical direction. The two lateral reinforcements 252 consist of elongated plates of an appropriate width. The width direction (short side direction) of the two lateral reinforcements 252 is approximately parallel to the vertical direction, and the longitudinal direction of the two lateral reinforcements 252 is approximately parallel to the horizontal direction.

[0038] The vertical reinforcement 253 consists of a bent member that extends vertically in an elongated shape. The vertical reinforcement 253 has higher rigidity than the pair of door bodies 251A, 251B and the two horizontal reinforcements 252. As shown in Figure 4, the horizontal side shape of the vertical reinforcement 253 is U-shaped. The vertical reinforcement has two side portions 253a, 253b that face each other in the thickness direction of the door bodies 251A, 251B, and a back portion 253c that is continuous with the two side portions 253a, 253b.

[0039] The side portion 253a of the vertical reinforcement 253 is fixed to the door body 251A, 251B. The upper and lower ends of the side portion 253b of the vertical reinforcement 253 are fixed to two horizontal reinforcements 252. The vertical reinforcement 253 can be fixed by methods such as welding, screw fixing, or riveting.

[0040] As shown in Figure 3, the safety fence 260 includes a pair of connecting members (shown as 261A in Figure 4), a pair of rotating members 262A, 262B, a pair of support members 263A, 263B, a plurality of connecting bars 264, a safety bar 265, and groove insertion protrusions 266A, 266B.

[0041] The safety barrier 260 is divided into a first barrier unit 260A and a second barrier unit 260B. The first barrier unit 260A is flexibly attached to the landing door 211A. The second barrier unit 260B is attached to the landing door 211B.

[0042] The first fence unit 260A consists of a connecting member 261A, a rotating member 262A, a support member 263A, multiple connecting bars 264, a safety bar 265, and a groove insertion projection 266A. The second fence unit 260B consists of a connecting member 261B, a rotating member 262B, a support member 263B, multiple connecting bars 264, and a groove insertion projection 266B.

[0043] The pair of connecting members 261A, 261B, the pair of rotating members 262A, 262B, and the pair of support members 263A, 263B are all symmetrical. The groove insertion protrusions 266A, 266B are the same members. Furthermore, the multiple connecting bars 264 are common members used in the first fence unit 260A and the second fence unit 260B. Therefore, this section will describe the first fence unit 260A, and the description of the second fence unit 260B will be omitted.

[0044] The connecting member 261A is composed of, for example, a plurality of rectangular prism members. The plurality of rectangular prism members are arranged at predetermined intervals in the vertical direction. The plurality of rectangular prism members are positioned between two horizontal reinforcements 252. The plurality of rectangular prism members are fixed to the back portion 253c of the vertical reinforcement 253 in the door body 251A.

[0045] Multiple prism members are configured to be expandable and contractible in the axial direction. The axial direction of the multiple prism members is approximately parallel to the thickness direction of the door bodies 251A and 251B. In its most contracted state, the connecting member 261A does not protrude beyond the door body 251A towards the hoistway. On the other hand, in its most extended state, the connecting member 261A protrudes beyond the door body 251A towards the hoistway (see Figure 5).

[0046] The rotating member 262A is formed in a cylindrical shape that extends vertically. The axial length of the rotating member 262A is shorter than the distance between the two transverse reinforcements 252. The rotating member 262A faces the space between the two transverse reinforcements 252. The other end of the connecting member 261A in the shorter direction is connected to the outer circumference of the rotating member 262A. The rotating member 262A is configured to be rotatable about an axis that extends vertically.

[0047] The support member 263A is formed in a cylindrical shape that extends vertically. The support member 263A faces the rotating member 262A in the horizontal direction. The axial length of the support member 263A is approximately equal to the axial length of the rotating member 262A. Furthermore, the vertical position of the support member 263A is approximately equal to the vertical position of the rotating member 262A.

[0048] Multiple connecting bars 264 connect the rotating member 262A and the support member 263A. As a result, the multiple connecting bars 264 and the support member 263A rotate together with the rotating member 262A. The multiple connecting bars 264 are formed in a rod shape. The multiple connecting bars 264 are arranged in the vertical direction at predetermined intervals.

[0049] One axial end of each of the multiple connecting bars 264 is fixed to the outer circumference of the rotating member 262A. The other axial end of each of the multiple connecting bars 264 is fixed to the outer circumference of the support member 263A. The multiple connecting bars 264 can be fixed in various ways, such as by welding, screwing, or riveting.

[0050] Multiple connecting bars 264 are fitted with cushioning material 264a. When the safety fence 260 is deformed into the installation state described later, the cushioning material 264a buffers contact between the door body 251A and the multiple connecting bars 264 (see Figure 6). This prevents damage to the multiple connecting bars 264 and the door body 251A. The cushioning material 264a may cover the entirety of the connecting bars 264.

[0051] The safety bar 265 consists of a long plate with an appropriate width. One end of the safety bar 265 is rotatably supported on the upper part of the support member 263A. The axis of rotation of the safety bar 265 extends horizontally. The safety bar 265 is stored in a storage groove formed in the support member 263A. When the safety fence 260 is transformed into the installation state described later, the safety bar 265 is removed from the storage groove of the support member 263A.

[0052] The support member 263B (see Figure 3) has an engagement groove formed therein, into which the other end of the safety bar 265 engages. When the safety fence 260 is transformed into the installation state described later, the other end of the safety bar 265 engages with the engagement groove of the support member 263B. As a result, the safety bar 265 is stretched across the pair of support members 263A and 263B (see Figure 7).

[0053] As shown in Figure 3, the groove insertion protrusions 266A and 266B are attached to the lower part of a pair of support members 263A and 263B. The groove insertion protrusions 266A and 266B are formed in a cylindrical shape. The axial direction of the groove insertion protrusions 266A and 266B is parallel to the vertical direction. Furthermore, the groove insertion protrusions 266A and 266B are movable in the axial direction.

[0054] The groove insertion projection 266A can be positioned in a storage position where it is housed within the support member 263A, and in a protruding position where it extends from the lower end of the support member 263A. The groove insertion projection 266B can be positioned in a storage position where it is housed within the support member 263B, and in a protruding position where it extends from the lower end of the support member 263B.

[0055] When the safety fence 260 is transformed into the installation state described later, if the groove insertion protrusions 266A and 266B are positioned in the protruding position, the groove insertion protrusions 266A and 266B are inserted into the sill groove of the landing-side door sill 213 (see Figure 7). The diameter of the groove insertion protrusions 266A and 266B is slightly smaller than the width of the sill groove of the landing-side door sill 213.

[0056] The safety fence 260 can be transformed into a retracted state that faces the back surfaces of the pair of landing doors 211A and 211B. As shown in Figure 3, when the safety fence 260 is transformed into the retracted state, the first fence unit 260A faces the back surface of landing door 211A, and the second fence unit 260B faces the back surface of landing door 211B.

[0057] As shown in Figure 4, when transforming the safety fence 260 into its retracted state, the safety bar 265 is stored in the storage groove of the support member 263A. The groove insertion protrusions 266A and 266B are also positioned in the retracted position. Next, the connecting member 261A of the first fence unit 260A is retracted. Then, the support member 263A is positioned approximately in the center of the door body 251A in the left-right direction.

[0058] At this time, the rotating member 262A of the first fence unit 260A protrudes slightly towards the elevator shaft 110 side than the door body 251A. Note that when the safety fence 260 is in the retracted position, the rotating member 262A does not interfere with the elevator car 120 (see Figure 2).

[0059] Next, the support member 263A is engaged with the locking portion provided on the door body 251A. This locks the movement of the support member 263A. As a result, the first fence unit 260A is fixed in place. The first fence unit 260A may also have a rotation locking portion that prevents the rotation of the rotating member 262A. In this case, the first fence unit 260A is fixed in place by preventing the rotation of the rotating member 262A.

[0060] The second fence unit 260B is also fixed in the same way as the first fence unit 260A, facing the back of the landing door 211B. As a result, the safety fence 260 can be stored away.

[0061] [Installation of safety fences] Next, the installation process for transforming the safety fence 260 into its installed state will be explained with reference to Figures 5 to 7. Figure 5 is a cross-sectional view of the landing door 211A when the rotating member 262A of the safety fence 260 is pulled out towards the elevator shaft 110. Figure 6 is a cross-sectional view of the landing door 211A when the safety fence 260 is deformed to its installed state. Figure 7 is a rear view of the landing door 211A when the safety fence 260 is deformed to its installed state.

[0062] The safety fence 260 can be transformed into an installation state where it is installed between a pair of door bodies 251A and 251B. Therefore, in order to transform the safety fence 260 into an installation state, first the landing doors 211A and 211B are opened.

[0063] Next, the support member 263A is removed from the locking portion provided on the door body 251A. Then, as shown in Figure 5, the connecting member 261A is extended. As a result, the rotating member 262A is pulled out towards the elevator shaft 110.

[0064] Next, as shown in Figure 6, the rotating member 262A is rotated to position the support member 263A between the pair of door bodies 251A and 251B (entrance / exit 102). At this time, a cushioning material 264a is interposed between the multiple connecting bars 264 and the pair of door bodies 251A and 251B. This prevents the multiple connecting bars 264 and the pair of door bodies 251A and 251B from coming into contact and being damaged.

[0065] Next, as shown in Figure 7, the groove insertion projection 266A is made to protrude from the lower end of the support member 263A and inserted into the sill groove of the landing-side door sill 213. This locks the movement of the support member 263A and fixes the first fence unit 260A in place.

[0066] Next, in the second fence unit 260B, similar to the first fence unit 260A, the support member 263B is positioned between the pair of door bodies 251A and 251B. Then, the groove insertion projection 266B is made to protrude from the lower end of the support member 263B and inserted into the sill groove of the landing-side door sill 213. This locks the movement of the support member 263B and fixes the second fence unit 260B in place.

[0067] Next, the safety bar 265 is rotated and removed from the storage groove of the support member 263A. Then, the other end of the safety bar 265 is engaged with the engagement groove of the support member 263B. This completes the installation of the safety fence 260.

[0068] When the safety fence 260 is installed, multiple connecting bars 264, a pair of support members 263A and 264b, and a safety bar 265 are positioned between a pair of door bodies 251A and 251B. This prevents workers from easily passing between the pair of door bodies 251A and 251B, thereby increasing safety during maintenance and inspection work. In addition, workers can ascend and descend within the elevator shaft 110 while hooking their safety harness hooks onto the connecting bars 264. As a result, workers can perform their work safely.

[0069] When the safety fence 260 is installed, the groove insertion protrusions 266A and 266B are inserted into the sill groove of the landing-side door sill 213. This allows the safety fence 260 to be fixed to the pair of door bodies 251A and 251B and to the landing 101 (building). As a result, the stress generated when the safety fence 260 is pushed is distributed to the connection between the safety fence 260 and the pair of door bodies 251A and 251B, and to the contact area between the groove insertion protrusions 266A and 266B and the sill groove. Therefore, damage to the safety fence 260 and the pair of door bodies 251A and 251B can be suppressed or prevented.

[0070] 2. Summary As described above, the pair of landing doors 211A and 211B according to the above embodiment comprises a pair of door bodies 251A and 251B and a safety fence 260 provided on the pair of door bodies 251A and 251B. The safety fence 260 can be transformed between a stored state facing the back surfaces of the pair of door bodies 251A and 251B and an installed state positioned between the pair of door bodies 251A and 251B when the entrance / exit 102 is opened (door open state). The safety fence 260 includes a pair of connecting members 261A, 261B, a pair of rotating members 262A, 262B, a pair of support members 263A, 263B, a plurality of connecting bars 264, a safety bar 265, and groove insertion protrusions 266A, 266B. The pair of connecting members 261A, 261B are attached to the back surfaces of a pair of door bodies 251A, 251B. The pair of rotating members 262A, 262B are connected to the pair of connecting members 261A, 261B and are rotatable around an axis extending in the vertical direction. The pair of support members 263A, 263B face the pair of rotating members 262A, 262B in the horizontal direction and extend in the vertical direction. The plurality of connecting bars 264 connect the pair of rotating members 262A, 262B to the pair of support members 263A, 263B. The safety bar 265 is rotatably supported on one of the pair of support members 263A, 263B and connectable to the other of the pair of support members 263A, 263B. The groove insertion projections 266A, 266B are attached to the lower part of the pair of support members 263A, 263B. When the safety fence 260 is deformed into its installed state, the pair of support members 263A, 263B are located between the pair of door bodies 251A, 251B, and the groove insertion projections 266A, 266B are inserted into sill grooves that movably engage with the pair of door bodies 251A, 251B. This allows the safety fence 260, which has been deformed into its installed state, to be fixed to the landing 101 where the entrance / exit 102 is located. As a result, the stress generated when the safety fence 260 (for example, the safety bar 265) is pushed can be distributed to the connection between the safety fence 260 and the pair of door bodies 251A, 251B, and to the contact area between the groove insertion protrusions 266A, 266B and the sill groove. Therefore, even if the installed safety fence 260 is pushed, damage to the safety fence 260 and the pair of door bodies 251A, 251B can be suppressed or prevented.

[0071] Furthermore, the pair of connecting members 261A and 261B according to the above embodiment are configured to be extendable and retractable, and when the safety fence 260 is deformed into the installed state, they protrude further toward the elevator shaft 110 than the pair of door bodies 251A and 251B. Also, when the safety fence 260 is deformed into the installed state, the pair of rotating members 262A and 262B are located further toward the elevator shaft 110 than the pair of door bodies 251A and 251B. This ensures that when the safety fence 260 is transformed into its installed state, the multiple connecting bars 264 do not interfere with the pair of door bodies 251A and 251B. Furthermore, when the safety fence 260 is transformed into its retracted state, the rotating members 262A and 262B can be positioned so as not to interfere with the elevator car 120.

[0072] Furthermore, a vertical reinforcement 253 extending in the vertical direction is provided on the back surface of the pair of door bodies 251A and 251B according to the above embodiment. The pair of connecting members 261A and 261B are attached to the vertical reinforcement 253. As a result, when the safety fence 260 is deformed into its installed state, force is applied to the highly rigid vertical reinforcement 253. Consequently, damage to the pair of door bodies 251A and 251B can be suppressed or prevented.

[0073] Furthermore, the multiple connecting bars 264 according to the above embodiment are arranged at predetermined intervals in the vertical direction, and safety belt hooks can be attached to them. This allows workers to ascend and descend within the elevator shaft 110 while hooking their safety harness hooks onto the connecting bars 264. As a result, workers can perform their work safely. The multiple connecting bars 264 may be designed to directly hook onto the safety harness hooks, or they may have ring-shaped protrusions or hook holes for hooking the safety harness hooks.

[0074] Furthermore, the multiple connecting bars 264 according to the above embodiment have a cushioning material 264a that buffers contact with the pair of door bodies 251A and 251B when the safety fence 260 is deformed into an installed state. This makes it possible to suppress or prevent damage to multiple connecting bars 264. In addition, it is possible to prevent damage to the pair of door bodies 251A and 251B.

[0075] Furthermore, the groove insertion projections 266A and 266B according to the above embodiment are supported by a pair of support members 263A and 263B so as to be movable in the vertical direction. This allows the groove insertion projections 266A and 266B to be easily inserted into the sill groove without having to move the pair of support members 263A and 263B vertically. As a result, the pair of support members 263A and 263B can be easily fixed to the landing (building).

[0076] Furthermore, the elevator according to the above-described embodiment includes a car 120 that moves up and down within the hoistway 110, and double-leaf landing doors 211A and 211B that open and close an entrance 102 communicating with the hoistway 110. The landing doors 211A and 211B each include a pair of door bodies 251A and 251B and a safety fence 260, as described above. This makes it possible to suppress or prevent damage to the safety fence 260 and the pair of door bodies 251A and 251B even if the safety fence 260 is pushed while installed.

[0077] The embodiments of the landing door and elevator of the present invention, including their effects, have been described above. However, the landing door and elevator of the present invention are not limited to the embodiments described above, and various modifications can be made without departing from the gist of the invention as described in the claims. Furthermore, the embodiments described above are explained in detail for the purpose of clearly illustrating the present invention, and are not necessarily limited to those having all the configurations described.

[0078] For example, in the embodiment described above, the connecting members 261A and 261B were formed in the shape of plates. However, the connecting member according to the present invention may be, for example, rod-shaped or plate-shaped. Furthermore, the connecting member according to the present invention is not limited to being composed of multiple expandable members, but may be a single member.

[0079] Furthermore, in the embodiment described above, the groove insertion protrusions 266A and 266B were formed in a cylindrical shape. However, the groove insertion protrusions according to the present invention may be formed in a prismatic or plate shape. The length of one side when the groove insertion protrusion is formed in a prismatic shape, and the thickness of the plate when the groove insertion protrusion is formed in a plate shape, are slightly smaller than the width of the sill groove of the landing side door sill 213.

[0080] Furthermore, in the above-described embodiment, a configuration in which a safety fence 260 is provided on double-leaf landing doors 211A and 211B was explained. However, the safety fence according to the present invention can also be provided on an elevator equipped with a single-leaf landing door. In this case, one of the first fence unit 260A and the second fence unit 260B is attached to the back surface of the single-leaf landing door. The other of the first fence unit 260A and the second fence unit 260B is attached to the wall surface of the elevator shaft. Even in this case, damage to the safety fence 260 and the single-leaf landing door can be suppressed or prevented even if the installed safety fence 260 is pushed. [Explanation of Symbols]

[0081] 1…Elevator, 10…Car, 11A,11B…Pair of car doors, 12…Car-side door unit, 30…Car-side locking mechanism, 100…Hoisting machine, 101…Landing, 102…Entrance / Exit, 110…Hoistway, 130…Main rope, 150…Derailleur, 160…Machine room, 211A,211B…Pair of landing doors, 212…Landing-side door unit, 213…Landing-side door sill, 215…Landing-side door rail, 221A,221B…Door hanger, 224…Moving roller, 230…Landing-side locking mechanism, 251A,251B…Door body, 251a…Back surface, 252…Lateral reinforcement, 253…Vertical reinforcement, 260…Safety fence, 260A…First fence unit, 260B…Second fence unit, 261A,261B…Pair of connecting members, 262A,262B…Pair of rotating members, 263A,263B…Pair of support members, 264…Connecting bar, 264a…Cushioning material, 265…Safety bar, 266A,266B…Groove insertion projection

Claims

1. A double-leaf landing door that opens and closes an entrance / exit that communicates with the elevator shaft, A pair of door bodies, The safety fence is provided on the pair of door bodies and is capable of being transformed between a retracted state facing the back surface of the pair of door bodies that faces the elevator shaft side and an installed state positioned at the entrance, The aforementioned safety fence, A pair of connecting members attached to the back surface of the pair of door bodies, A pair of rotating members connected to the pair of connecting members and rotatable around an axis extending in the vertical direction, The pair of rotating members are opposed to each other in the horizontal direction, and a pair of support members extend in the vertical direction, A plurality of connecting bars that connect the pair of rotating members and the pair of support members, A safety bar is rotatably supported on one of the pair of support members and connectable to the other of the pair of support members, It has groove insertion projections attached to the lower part of the pair of support members, When the safety fence is transformed into the installed state, the pair of support members are positioned between the pair of door bodies, and the groove insertion projection is inserted into the sill groove that movably engages with the pair of door bodies. Boarding door.

2. The pair of connecting members are configured to be extendable and retractable, and when the safety fence is deformed to the installed state, they protrude further toward the elevator shaft than the pair of door bodies. The pair of rotating members are positioned on the elevator shaft side of the pair of door bodies when the safety fence is deformed to the installed state. The boarding door according to claim 1.

3. The back surfaces of the pair of door bodies are provided with vertical reinforcements extending in the vertical direction. The pair of connecting members are attached to the vertical reinforcement. The boarding door according to claim 1.

4. The aforementioned multiple connecting bars are arranged vertically at predetermined intervals and can be fitted with safety harness hooks. The boarding door according to claim 1.

5. The plurality of connecting bars have a cushioning material that prevents contact with the pair of door bodies when the safety fence is deformed to the installed state. The boarding door according to claim 1.

6. The groove insertion projection is supported by the pair of support members so as to be movable in the vertical direction. The boarding door according to claim 1.

7. An elevator comprising a car that moves up and down within a hoistway, and double-leaf landing doors that open and close an entrance communicating with the hoistway, The aforementioned boarding door is, A pair of door bodies, The safety fence is provided on the pair of door bodies and is capable of being transformed between a retracted state facing the back surface of the pair of door bodies that faces the elevator shaft side and an installed state positioned at the entrance, The aforementioned safety fence, A pair of connecting members attached to the back surface of the pair of door bodies, A pair of rotating members connected to the pair of connecting members and rotatable around an axis extending in the vertical direction, The pair of rotating members are opposed to each other in the horizontal direction, and a pair of support members extend in the vertical direction, A plurality of connecting bars that connect the pair of rotating members and the pair of support members, A safety bar is rotatably supported on one of the pair of support members and connectable to the other of the pair of support members, It has groove insertion projections attached to the lower part of the pair of support members, When the safety fence is transformed into the installed state, the pair of support members are positioned between the pair of door bodies, and the groove insertion projection is inserted into the sill groove that movably engages with the pair of door bodies. Elevator.

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