Elevator door device and elevator

Abstract

This elevator door device comprises a landing door, a landing-side door sill, a landing-side lock mechanism that unlockably locks the landing door, and a manual release mechanism. The manual release mechanism is disposed on the side of the landing door that faces a car door, and is used to put the landing-side lock mechanism into an unlocked state. The landing door has a handle connection hole into which an operating handle is to be inserted from the landing side in order to connect the manual release mechanism and the operating handle. Also, the manual release mechanism has an engagement pin rotatably provided on the landing door and rotated by the operating handle inserted into the handle connection hole. An opening into which the rotated engagement pin is to be inserted is formed in the landing-side door sill.

Description

Elevator Door Device and Elevator

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

[0002] Conventionally, landing doors provided on the landing side of an elevator are provided with a landing-side locking mechanism that locks and unlocks the opening and closing operation. As a result, the landing door cannot be manually opened or closed from the landing side, and as a result, it is possible to prevent passengers from falling into the hoistway.

[0003] When performing maintenance and inspection of an elevator or when a person is trapped in the car, an operator unlocks the landing door lock from the landing side and manually opens the landing door. A mechanism for unlocking the landing door lock from the landing side is described in, for example, Patent Document 1. Patent Document 1 describes a technique including a landing door, a landing-side locking mechanism that locks the landing door in a lockable manner, and a manual release mechanism that is disposed on the side of the landing door facing the car door and releases the landing-side locking mechanism to an unlocked state. Further, the landing door has a handle connection hole for inserting an operation handle from the landing side in order to connect the manual release mechanism and the operation handle.

[0004] International Publication No. 2023 / 053220

[0005] However, in the technique described in Patent Document 1, the handle connection hole was provided at the end of the landing door on the door pocket side in the door opening direction. Therefore, in the technique described in Patent Document 1, not only does the designability of the landing door decrease, but there is a risk that the operation handle inserted into the handle connection hole will contact the vertical frame at the entrance of the building and damage the vertical frame.

[0006] An object of the present invention is to provide an elevator door device and an elevator that can prevent an operation handle inserted into a handle connection hole from contacting a vertical frame at the entrance of a building in consideration of the above problems.

[0007] To solve the above problems and achieve the objective, the elevator door system comprises a landing door, a landing-side door sill that supports the landing door so that it can be opened and closed, a landing-side locking mechanism that locks the landing door so that it can be unlocked, and a manual release mechanism. The manual release mechanism is located on the side of the landing door opposite the car door and unlocks the landing-side locking mechanism. The landing door has a handle connection hole into which an operating handle is inserted from the landing side to connect the manual release mechanism and the operating handle. The manual release mechanism is rotatably mounted on the landing door and has an engagement pin that is rotated by the operating handle inserted into the handle connection hole. The landing-side door sill has an opening into which the rotated engagement pin is inserted.

[0008] Furthermore, the elevator includes a landing door located at the entrance to the landing where the elevator car stops in the building structure, a landing-side door sill that supports the landing door so that it can be opened and closed, a landing-side locking mechanism that locks the landing door in an unlockable position, and a manual release mechanism. The manual release mechanism is located on the side of the landing door opposite the car door and unlocks the landing-side locking mechanism. The landing door has a handle connection hole into which an operating handle is inserted from the landing side to connect the manual release mechanism and the operating handle. The manual release mechanism is rotatably mounted on the landing door and has an engagement pin that is rotated by the operating handle inserted into the handle connection hole. The landing-side door sill has an opening into which the rotated engagement pin is inserted.

[0009] According to the elevator door device and elevator with the above configuration, it is possible to prevent the operating handle inserted into the handle connection hole from coming into contact with the vertical frame at the entrance of the building.

[0010] This is a schematic diagram showing an elevator according to an embodiment. This is a side view showing the elevator car according to an embodiment stopped at an arbitrary floor. This is an explanatory diagram of the elevator entrance according to an embodiment as seen from the landing side. This is a front view of the elevator entrance according to an embodiment as seen from the car side. This is a plan view of the elevator landing side door sill according to an embodiment as seen from above. This is an explanatory diagram showing the case of unlocking the elevator landing door's landing side lock mechanism from the landing side, as seen from the car side. This is an explanatory diagram showing the state of unlocking the elevator landing door's landing side lock mechanism from the car side, as seen

[0011] The following describes examples of elevator door devices and elevators with reference to Figures 1 to 9. Note that common components in each figure are denoted by the same reference numerals.

[0012] 1. Embodiment Example 1-1. Elevator Configuration First, the configuration of the elevator according to the embodiment example (hereinafter referred to as "this example") will be described with reference to Figures 1 and 2. Figure 1 is a schematic diagram showing the configuration of the elevator. Figure 2 is a side view showing the elevator car stopped at an arbitrary floor.

[0013] As shown in Figure 1, elevator 1 is a so-called machine-room-less elevator, which does not have a machine room above the hoistway 100 formed within the building structure. However, the elevator of the present invention is not limited to a machine-room-less elevator, and may also be an elevator that has a machine room above the hoistway 100.

[0014] Elevator 1 includes a car 110 that moves up and down within the hoistway 100, a hoisting machine 120, a counterweight 130, a first driven pulley 140, a second driven pulley 150, and a rope 170.

[0015] A lifting pulley 111 is provided at the bottom of the elevator car 110. A rope 170 is wrapped around the lifting pulley 111.

[0016] A weight-side pulley 131 is provided at the top of the counterweight 130. A rope 170 is wound around the weight-side pulley 131. The hoisting machine 120 is located at the bottom of the elevator shaft 100 and raises and lowers the elevator car 110 and the counterweight 130 in a bucket-and-loop manner via the rope 170. The hoisting machine 120 is controlled by a control unit (not shown).

[0017] The first driven pulley 140 and the second driven pulley 150 are rotatably mounted at the top of the elevator shaft 100. One end and the other end of the rope 170 are fixed to the top of the elevator shaft 100. The rope 170 is mounted from the counterweight pulley 131 on the counterweight 130 to the first driven pulley 140, and then wound around the hoisting machine 120, the second driven pulley 150, and the lifting pulley 111 of the elevator car 110 in that order.

[0018] When the hoisting machine 120 is driven, the elevator car 110 and the counterweight 130 move up and down within the elevator shaft 100. Hereinafter, the direction in which the elevator car 110 and the counterweight 130 move up and down will be referred to as the vertical direction.

[0019] Furthermore, as shown in Figure 2, each floor of the building structure has an entrance / exit 102 at the landing 101 where the elevator car 110 stops, allowing people and objects to enter and exit the elevator car 110. The entrance / exit 102 is equipped with a pair of landing doors 211A and 211B that can be opened and closed.

[0020] The pair of landing doors 211A and 211B are supported so as to be openable and closable by a landing-side door unit 212 provided at the upper end of the entrance / exit 102 in the vertical direction, and a landing-side door sill 213 provided at the lower end of the entrance / exit 102 in the vertical direction. The landing-side door unit 212 will be described later.

[0021] [Elevator Car] Next, the configuration of the elevator car 110 will be described. As shown in Figure 1, the elevator car 110 has an elevator car 10 through which people and objects get on and off, a pair of elevator doors 11A and 11B, an elevator car side door unit 12, and an elevator car side door sill 13 (see Figure 2). One side of the elevator car 10 is provided with an opening that is opened and closed by the pair of elevator doors 11A and 11B. People and objects enter and exit through this opening.

[0022] The car-side door unit 12 is provided at the upper end in the vertical direction of the opening of the car compartment 10. The car-side door sill 13 is provided at the lower end in the vertical direction of the opening of the car compartment 10. The pair of car doors 11A and 11B are supported by the car-side door unit 12 and the car-side door sill 13 so as to be able to open and close (move) in a horizontal direction perpendicular to the vertical direction.

[0023] As shown in Figures 1 and 2, the car-side door unit 12 is provided with a car-side door rail 15, a drive unit 16 (see Figure 1), a transmission belt 17, and a driven roller 18. The car-side door rail 15 is parallel to the horizontal direction and extends along the opening and closing (movement) direction of the pair of car doors 11A and 11B.

[0024] The drive unit 16 is located at one horizontal end of the car-side door unit 12, and the driven roller 18 is located at the other horizontal end of the car-side door unit 12. A transmission belt 17 is wrapped around the drive shaft of the drive unit 16 and the driven roller 18.

[0025] The transmission belt 17 is formed in an endless shape with both ends in the longitudinal direction connected. When the drive unit 16 is driven, the transmission belt 17 circulates between the driven roller 18 and the drive shaft of the drive unit 16. At this time, the upper and lower parts of the transmission belt 17 move in opposite directions in the vertical direction. A first connecting member 22 is connected to the lower part of the transmission belt 17, and a second connecting member 23 is connected to the upper part of the transmission belt 17.

[0026] Next, the pair of car doors 11A and 11B will be described. The pair of car doors 11A and 11B are each formed in a rectangular shape. A first door hanger 21A is provided at the upper end in the vertical direction of the first car door 11A. A second door hanger 21B is provided at the upper end in the vertical direction of the second car door 11B. In addition, a slider 14 is provided at the lower end in the vertical direction of the pair of car doors 11A and 11B. The slider 14 is slidably engaged with a guide groove provided in the car-side door sill 13.

[0027] A movable roller 24 is rotatably mounted on the first door hanger 21A and the second door hanger 21B, respectively. The movable roller 24 is slidably engaged with the car-side door rail 15.

[0028] The first door hanger 21A has a first connecting member 22, and the second door hanger 21B has a second connecting member 23. The first connecting member 22 protrudes upward from the upper end in the vertical direction of the first door hanger 21A. The second connecting member 23 protrudes upward from the upper end in the vertical direction of the second door hanger 21B. The first connecting member 22 is connected to the lower part of the transmission belt 17, and the second connecting member 23 is connected to the upper part of the transmission belt 17.

[0029] When the drive unit 16 is driven and the transmission belt 17 moves, 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 first connecting member 22 and the second connecting member 23.

[0030] Furthermore, the first car door 11A is provided with a pair of car-side engaging elements 32. The pair of car-side engaging elements 32 are formed from elongated members that extend for a predetermined length along the vertical direction. The pair of car-side engaging elements 32 are spaced apart in the door-opening direction of the car door 11A. The spacing between the pair of car-side engaging elements 32 is set to be greater than the spacing between the landing-side engaging elements 235 and 236, which will be described later. This allows the landing-side engaging elements 235 and 236 to pass between the pair of car-side engaging elements 32 in the vertical direction. In addition, the pair of car-side engaging elements 32 engage with the landing-side engaging elements 235 and 236, which will be described later, when the pair of car doors 11A and 11B move in the door-opening direction. Then, the lock of the landing-side locking mechanism 230, which will be described later, is released, and the pair of car doors 11A and 11B and the pair of landing doors 211A and 211B, which will be described later, move along the door-opening direction.

[0031] [Landing-side door unit and landing door, landing-side door sill] Next, the configuration of the landing-side door unit 212 and the landing-side door sill 213 will be described with reference to Figures 3 to 5. Figure 3 is an explanatory diagram of the entrance / exit 102 as seen from the landing 101 side. Figure 4 is a front view of the entrance / exit 102 as seen from the elevator car 110 side. Figure 5 is a plan view of the landing-side door sill 213 as seen from above.

[0032] As shown in Figure 3, the entrance / exit 102 is formed in the shape of a vertically elongated rectangle. The lower edge of the entrance / exit 102 is formed by the floor level of the building. The entrance / exit 102 has an upper frame 102a that forms the top edge, a vertical frame 102b that forms the left edge, and a vertical frame 102c that forms the right edge. A landing-side door unit 212, which will be described later, is provided on the elevator car 110 side (hoistway 100 side) of the upper frame 102a.

[0033] The vertical frame 102b is positioned in the direction of opening the landing door 211A. When the landing door 211A moves in the direction of opening, it faces the elevator car 110 side of the vertical frame 102b. The vertical frame 102c is positioned in the direction of opening the landing door 211B. When the landing door 211B moves in the direction of opening, it faces the elevator car 110 side of the vertical frame 102c.

[0034] The landing door 211A is provided with a handle connection hole 250. An operating handle (not shown) held by worker M1 is inserted into the handle connection hole 250. The handle connection hole 250 is located at the lower end of the landing door 211A in the vertical direction. The handle connection hole 250 is also formed at the end of the landing door 211A opposite to the end on the pocket side. When worker M1 inserts the operating handle into the handle connection hole 250 and operates the operating handle, the lock of the landing-side lock mechanism 230, which will be described later, is unlocked.

[0035] The landing doors 211A, 211B and the landing-side door unit 212 constitute the elevator door device according to the present invention. As shown in Figure 4, the landing-side door unit 212 includes a landing-side door rail 215, a first pulley 216, a second pulley 218, a transmission belt 217, door hangers 221A, 221B, and a landing-side locking mechanism 230.

[0036] Door hangers 221A and 221B are provided at the upper ends of the landing doors 211A and 211B in the vertical direction. A movable roller 224 is rotatably attached to the door hangers 221A and 221B. The movable roller 224 slidably engages with the landing-side door rail 215. The landing-side door rail 215 extends along the opening and closing (movement) direction of the pair of landing doors 211A and 211B.

[0037] Furthermore, the two door hangers 221A and 221B are each provided with connecting members 222 and 223. The connecting members 222 and 223 are connected to the transmission belt 217. In addition, the door hanger 221A of the two door hangers 221A and 221B that faces the first door hanger 21A of the elevator car 110 is provided with a landing-side locking mechanism 230. The landing-side locking mechanism 230 will be described later.

[0038] The first pulley 216 is positioned on one horizontal side of the landing-side door unit 212. The second pulley 218 is positioned on the other horizontal side of the landing-side door unit 212. A transmission belt 217 is wrapped around the first pulley 216 and the second pulley 218. The transmission belt 217 is formed in an endless shape with both ends in the longitudinal direction connected. The upper and lower parts of the transmission belt 217 move in opposite directions.

[0039] A connecting member 222 is connected to the lower part of the transmission belt 217. A connecting member 223 is connected to the upper part of the transmission belt 217. When the transmission belt 217 moves, the pair of landing doors 211A and 211B move either towards each other in the closing direction or away from each other in the opening direction via the connecting members 222 and 223.

[0040] [Landing-side locking mechanism] As shown in Figure 4, the landing-side locking mechanism 230 includes a locking-side hook member 231, a pivot shaft 232, a first landing-side engaging element 235, a second landing-side engaging element 236, and a base plate 237. The landing-side locking mechanism 230 also includes a fixed hook member 234.

[0041] The base plate 237 is formed in a substantially flat shape. The base plate 237 is fixed to the door hanger 221A. The fixing hook member 234 is fixed to a different door hanger 221B or landing door 211A, which is different from the door hanger 221A to which the base plate 237 is fixed.

[0042] A pivot shaft 232 and a second landing-side engaging element 236 are fixed to the base plate 237. A locking-side hook member 231 is rotatably mounted on the pivot shaft 232. A stopper fixed to the base plate 237 abuts against the locking-side hook member 231. The stopper restricts the locking-side hook member 231 from rotating counterclockwise by abutting against it. In addition, a first landing-side engaging element 235 is rotatably attached to the upper end of the locking-side hook member 231.

[0043] The first boarding-side engaging member 235 and the second boarding-side engaging member 236 are arranged to face each other in the opening and closing direction of the pair of boarding doors 211A and 211B. Further, when the car 110 stops at an arbitrary floor, the first boarding-side engaging member 235 and the second boarding-side engaging member 236 are arranged between a pair of car-side engaging members 32 provided on the car-side doors 11A and 11B (see FIG. 2).

[0044] In the vicinity of the first boarding-side engaging member 235 in the locking-side hook member 231, a locking holding member (not shown) is arranged. One end of the locking holding member is fixed to the base plate 237, and the other end is fixed to the upper end portion in the vertical direction of the locking-side hook member 231.

[0045] The locking holding member biases the locking-side hook member 231 in the direction of engaging with the fixed hook member 234, that is, downward in the vertical direction. Thereby, the engagement between the locking-side hook member 231 and the fixed hook member 234 is maintained, and the locked state of the boarding-side lock mechanism 230 is held.

[0046] Further, the boarding-side door unit 212 has a manual release mechanism 243. The manual release mechanism 243 includes an operation rope 245 connected to the locking-side hook member 231, a conversion pulley 246, an engagement pin 247, and a rotating shaft 248. One end of the operation rope 245 is connected to the side of the locking-side hook member 231 opposite to the side facing the fixed hook member 234. The conversion pulley 246 is provided at the end on the pocket side at the intermediate portion in the vertical direction of the boarding door 211A. The operation rope 245 is wound around the conversion pulley 246, and the other end of the operation rope 245 extends to the end opposite to the end on the pocket side at the lower end portion in the vertical direction of the boarding door 211A.

[0047] When the operation rope 245 is pulled, a force that rotates the locking-side hook member 231 away from the fixed hook member 234 about the rotation shaft 232 is applied to the locking-side hook member 231. As a result, the locking-side hook member 231 rotates against the biasing force of the locking holding member, and the boarding-side lock mechanism 230 is unlocked. That is, the operation rope 245 is used when manually unlocking the boarding-side lock mechanism 230 from the hoistway 100.

[0048] The other end of the operation rope 245 is connected to the rotary shaft 248. The rotary shaft 248 is rotatably supported at an end portion on the opposite side of the end portion on the door pocket side at the lower end portion in the vertical direction of the landing door 211A. The rotary shaft 248 is disposed in a handle connection hole 250 provided in the landing door 211A. The rotary shaft 248 is rotatably supported by the landing door 211A. Further, an operation handle (not shown) inserted into the handle connection hole 250 from the landing 101 side is connected to the rotary shaft 248. Thereby, the rotary shaft 248 is rotationally operated by the operation handle. When the rotary shaft 248 is rotationally operated, the operation rope 245 is pulled and the landing side lock mechanism 230 is unlocked.

[0049] Further, an engagement pin 247 is provided on the rotary shaft 248. The engagement pin 247 is rotatably supported by the rotary shaft 248. Further, the engagement pin 247 rotates about the rotary shaft 248. The engagement pin 247 is supported by the rotary shaft 248 and is disposed above the landing side door sill 213 in the vertical direction. In a state before the rotary shaft 248 is rotationally operated by the operation handle, that is, in a normal state, the engagement pin 247 faces upward in the vertical direction. When the rotary shaft 248 is rotationally operated, the engagement pin 247 rotates about the rotary shaft 248 and faces downward in the vertical direction. Further, the engagement pin 247 is inserted into an opening 213b provided in the landing side door sill 213.

[0050] As shown in FIG. 5, a groove-shaped door rail 213a for supporting the pair of landing doors 211A and 211B to be opened and closed is formed in the landing side door sill 213. The door rail 213a extends along the door opening direction of the pair of landing doors 211A and 211. An opening 213b is formed in an intermediate portion in the longitudinal direction of the door rail 213a.

[0051] The opening 213b is a through-hole that penetrates the landing-side door sill 213 vertically. The opening 213b is a debris-removing hole for dropping off debris accumulated on the door rail 213a. This opening 213b is open for a predetermined length L (see Figure 4) along the door-opening direction of the pair of landing doors 211A and 211. The length L of this opening 213b is set to be half or less of half of the length 2L that prevents a person from passing through the opening of the pair of landing doors 211A and 211B.

[0052] 2. Door Opening Operation of the Car Door and Landing Door Next, the door opening operation of the elevator 1 having the above-described configuration will be explained with reference to Figure 2.

[0053] As shown in Figure 2, when the elevator car 110 stops at any floor, the car-side door unit 12 and the landing-side door unit 212 face each other. At this time, the first landing-side engaging element 235 and the second landing-side engaging element 236 are inserted between the pair of car-side engaging elements 32.

[0054] In this state, the drive unit 16 (see Figure 1) is driven, and as the pair of car doors 11A and 11B move in the door-opening direction, separating from each other, the car-side engaging element 32 comes into contact with the first landing-side engaging element 235. Furthermore, when the first car door 11A attempts to move in the door-opening direction, the first landing-side engaging element 235 is pressed against the car-side engaging element 32. Then, the locking-side hook member 231 (see Figure 4) of the landing-side locking mechanism 230 rotates around the pivot axis 232 against the biasing force of the locking holding member. As a result, the landing-side locking mechanism 230 is unlocked. Consequently, the landing doors 211A and 211B move in the door-opening direction together with the car doors 11A and 11B, and the door-opening operation of the car doors 11A and 11B of the elevator car 110 and the landing doors 211A and 211B of the landing 101 is completed.

[0055] In the event of a power outage, if the first landing-side engaging element 235 and the second landing-side engaging element 236 are inserted between the pair of car-side engaging elements 32, the car doors 11A and 11B can be opened by opening the landing doors 211A and 211B with the hands of worker M1.

[0056] 3. Unlocking the Landing-Side Locking Mechanism Next, the unlocking of the landing-side locking mechanism 230 will be explained with reference to Figures 6 to 9. Figures 6 and 7 are explanatory diagrams showing the unlocking of the landing-side locking mechanism 230 from the landing 101 side, as seen from the elevator car 110 side. Figure 8 is an explanatory diagram showing the state of unlocking the landing-side locking mechanism 230 from the elevator car 110 side. Figure 9 is an explanatory diagram showing the state of unlocking the landing-side locking mechanism 230 from the landing 101 side.

[0057] [Unlocking from the elevator car side] Worker M1, working in the elevator shaft 100 (see Figure 1), may unlock the landing side lock mechanism 230 from the elevator car 110 side (elevator shaft 100) and manually open the pair of landing doors 211A and 211B. To unlock the landing side lock mechanism 230 from the elevator car 110 side, pull the other end of the operating rope 245 downwards.

[0058] With the landing-side locking mechanism 230 locked, as shown in Figure 8, when worker M1 inside the elevator shaft 100 pulls the other end of the operating rope 245 downward, the locking-side hook member 231 rotates against the biasing force of the locking-holding member. As a result, the landing-side locking mechanism 230 is unlocked.

[0059] After unlocking the landing-side locking mechanism 230, when the other end of the operating rope 245 is released, the locking-side hook member 231 rotates due to the biasing force of the locking holding member. As a result, the locking-side hook member 231 engages with the fixed hook member 234, and the landing-side locking mechanism 230 returns to the locked state. Therefore, the worker M1 opens the pair of landing doors 211A and 211B while pulling the other end of the operating rope 245 downwards.

[0060] When the landing door 211A moves to a predetermined position in the door-opening direction, the locking hook member 231 is positioned so that it does not engage with the fixed hook member 234 even when biased by the locking holding member. Therefore, when the operator M1 moves the landing door 211A to a predetermined position in the door-opening direction, the other end of the operating rope 245 can be released.

[0061] [Unlocking from the landing side] Next, the unlocking operation from the landing 101 side will be described. For example, in the event of a power outage, worker M1 arriving at landing 101 may unlock the landing side lock mechanism 230 from the landing 101 side and manually open the pair of landing doors 211A and 211B. When the landing side lock mechanism 230 is locked, to unlock the landing side lock mechanism 230 from the landing 101 side, an operating handle (not shown) is inserted into the handle connection hole 250 of the landing door 211A. This connects the operating handle to the rotating shaft 248.

[0062] Next, as shown in Figure 9, the operating handle is rotated counterclockwise when viewed from the landing 101. As a result, as shown in Figure 6, the rotating shaft 248 to which the operating handle is connected rotates clockwise when viewed from the elevator car 110 side. When the rotating shaft 248 rotates clockwise, one end of the operating rope 245 is pulled downward. As a result, the locking hook member 231 rotates against the biasing force of the locking holding member, and the landing-side locking mechanism 230 is unlocked.

[0063] Furthermore, as the rotating shaft 248 rotates, the engaging pin 247, which is attached to the rotating shaft 248, also rotates and faces downward in the vertical direction. As a result, the engaging pin 247 is inserted into the opening 213b provided in the landing-side door sill 213.

[0064] Next, worker M1 holds the operating handle to maintain the unlocked state of the landing-side locking mechanism 230 and opens the pair of landing doors 211A and 211B. As shown in Figure 7, when the engaging pin 247 contacts the pocket-side end of the opening 213b, the locking-side hook member 231 is positioned so that it does not engage with the fixed hook member 234 even when biased by the locking holding member. Therefore, when worker M1 moves the landing door 211A to a predetermined position in the door-opening direction, he can disengage the operating handle from the rotating shaft 248.

[0065] Here, the length 2L of the opening of the pair of landing doors 211A and 211B is too large for a person to pass through. The length L of the opening 213b into which the engagement pin 247 is inserted is set to half or less than half of the length 2L of the opening of the pair of landing doors 211A and 211B that a person cannot pass through. Since the pair of landing doors 211A and 211B move in conjunction with each other in the door-opening direction, when landing door 211A moves by a length L, the length of the opening of the pair of landing doors 211A and 211B doubles to 2L.

[0066] Here, the handle connection hole 250 into which the operating handle is inserted is formed at the end of the landing door 211A opposite to the end on the pocket side in the door opening direction. Therefore, when moving the pair of landing doors 211A and 211B along the door opening direction, the engagement pin 247 contacts the pocket side end of the opening 213b before the operating handle interferes with the vertical frame 102b of the building's entrance 102. Thus, the worker M1 can remove the operating handle from the handle connection hole 250 before the operating handle interferes with the vertical frame 102b of the building's entrance 102. As a result, it is possible to prevent the operating handle from contacting the vertical frame 102b of the building's entrance 102 and damaging the vertical frame 102b when opening the pair of landing doors 211A and 211B.

[0067] Furthermore, the handle connection hole 250 is provided at the lower vertical end of the landing door 211A. As a result, the line of sight of the operator M1 operating the operating handle is directed downwards in the vertical direction. This allows the operator M1 to naturally direct their line of sight downwards within the elevator shaft 100 while opening the pair of landing doors 211A and 211B, enabling them to confirm whether the elevator car 110 is stopped in the designated position and preventing the operator M1 from falling into the elevator shaft 110.

[0068] Furthermore, when the operating handle is inserted into the handle connection hole 250 and the worker M1 is confirming the position of the elevator car 110, the length 2L of the openings of the pair of landing doors 211A and 211B is set to a size that prevents a person from passing through (approximately 100 mm in this embodiment). This prevents the worker M1 from falling into the elevator shaft 110, making the confirmation work safer.

[0069] Once worker M1 has finished the verification process, worker M1 removes the operating handle from the landing door 211A and rotates the rotating shaft 248 and the engaging pin 247. This pulls out the engaging pin 247 from the opening 213b provided in the landing-side door sill 213, allowing the landing doors 211A and 211B to open further. As a result, it is possible to prevent worker M1 on the landing 101 or passengers inside the elevator car 110 from passing through the opening of the pair of landing doors 211A and 211B with the operating handle inserted into the landing door 211A. Furthermore, it is possible to prevent the operating handle from being left inserted in the handle connection hole 250 of the landing door 211A. Therefore, it is possible to prevent worker M1 or others from coming into contact with the operating handle and causing it to fall into the elevator shaft 100.

[0070] Furthermore, an engagement pin 247 is removably inserted, and a debris removal hole is used as an opening 213b that temporarily restricts the opening operation of the landing door 211A, allowing debris accumulated in the door rail 213a to fall out. This prevents the configuration of the landing door 211A and the landing side door sill 213 from becoming complicated.

[0071] The elevator door device and elevator of the present invention, including their effects, have been described above. However, the elevator door device 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.

[0072] For example, in the embodiment described above, the elevator door device is configured to include a pair of landing doors 211A and 211B. However, the elevator door device according to the present invention is not limited to double-opening landing doors, and may also be configured to include single-opening landing doors. In the case of single-opening landing doors, the length of the opening 213b into which the engagement pin 247 is inserted is set to be less than or equal to the length that prevents a person from passing through. Furthermore, the operating handle is not limited to being held by the worker M1, but may be stored in a predetermined location in the elevator.

[0073] Furthermore, the configuration of elevator 1 is not limited to the 2:1 roping elevator shown in Figure 1, but can also be applied to various other types of elevators, such as 1:1 roping elevators and hydraulic elevators.

[0074] Furthermore, while the above-described embodiment illustrates the application of the elevator door device to a new elevator, it is not limited to this. For example, the elevator door device may be newly installed during renovation work on an existing elevator.

[0075] For example, the above-described embodiments are intended to explain the configuration of the apparatus and system in detail and specifically in order to make the present invention easier to understand, and are not necessarily limited to having all the configurations described. Furthermore, it is possible to replace some of the configurations of the embodiments described here with the configurations of other embodiments, and it is also possible to add configurations from other embodiments to the configuration of one embodiment. In addition, it is possible to add, delete, or replace some of the configurations of the embodiments with other configurations.

[0076] In this specification, although terms such as "parallel" and "orthogonal" are used, these do not mean only strictly "parallel" and "orthogonal," but may also refer to states that are "approximately parallel" or "approximately orthogonal," which include "parallel" and "orthogonal" and are within a range in which they can perform their functions.

[0077] 1...Elevator, 10...Car, 11A, 11B...Car door, 12...Car-side door unit, 32...Car-side engaging lock mechanism, 100...Hoistway, 101...Landing, 102...Entrance, 102a...Upper frame, 102b, 102c...Vertical frame, 110...Car, 120...Hoisting machine, 170...Rope, 211A, 211B...Landing door, 212...Landing-side door unit, 213...Landing-side door sill, 213b...Opening, 230...Landing-side lock mechanism, 231...Locking-side hook member, 232...Rotating shaft, 234...Fixed hook member, 235...First landing-side engaging element, 236...Second landing-side engaging element, 237...Base plate, 243... Manual release mechanism, 245... Operating rope, 246... Switching pulley, 247... Engagement pin, 248... Rotating shaft, 250... Hole for handle connection

Claims

1. An elevator door device comprising: a landing door; a landing-side door sill that supports the landing door so as to be openable and closable; a landing-side locking mechanism that locks the landing door so as to be unlockable; and a manual release mechanism disposed on the side of the landing door facing the car door and for disengaging the landing-side locking mechanism, wherein the landing door has a handle connection hole into which an operating handle is inserted from the landing side to connect the manual release mechanism and the operating handle; the manual release mechanism has an engagement pin that is rotatably provided on the landing door and rotated by the operating handle inserted into the handle connection hole; and the landing-side door sill has an opening into which the rotated engagement pin is inserted.

2. The elevator door device according to claim 1, wherein the length of the landing door in the opening direction of the opening is set to a length that is less than or equal to the size that prevents a person from passing through when the landing door is open.

3. The elevator door device according to claim 1, wherein the handle connection hole is formed at the lower end in the vertical direction of the landing door.

4. The elevator door device according to claim 3, wherein the handle connection hole is formed at the end of the landing door opposite to the end on the pocket side.

5. The elevator door device according to claim 1, wherein the landing-side locking mechanism comprises a fixed hook member and a locking-side hook member that is rotatably mounted and engages with the fixed hook member when the landing door is locked, the manual release mechanism comprises an operating rope connected to the locking-side hook member and a rotating shaft to which the operating rope is connected and which is operated by the operating handle, the engaging pin is provided on the rotating shaft, and the rotating shaft is rotatably mounted on the landing door and rotates to pull the operating rope, thereby rotating the locking-side hook member away from the fixed hook member.

6. An elevator comprising: a landing door provided at the entrance to a landing where the elevator car stops in a building structure; a landing-side door sill that supports the landing door so that it can be opened and closed; a landing-side locking mechanism that locks the landing door so that it can be unlocked; and a manual release mechanism disposed on the side of the landing door opposite the car door and for disengaging the landing-side locking mechanism, wherein the landing door has a handle connection hole into which an operating handle is inserted from the landing side to connect the manual release mechanism and the operating handle; the manual release mechanism has an engagement pin that is rotatably provided in the landing door and rotated by the operating handle inserted into the handle connection hole; and the landing-side door sill has an opening into which the rotated engagement pin is inserted.

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