Landing door and elevator

Abstract

The invention provides a landing door and an elevator capable of reducing the number of parts of a locking mechanism capable of locking in two stages. A locking mechanism of a landing door locks a door body in a door closing state in which the door body is closed and a door opening midway state in which the door body is opened from the door closing state to a predetermined distance. A hook member of the lock mechanism has a first hook and a second hook, and rotates about a rotation axis perpendicular to the sliding direction and the vertical direction of the door body. The hook receiving portion is engaged with the first hook in a door closing state, and is engaged with the second hook in a door opening midway state. The biasing member biases the hook member in a posture in which the first hook and the second hook face the hook receiving portion in the sliding direction of the door body. The first unlocking part is connected with the hook component and can rotate the hook component in the door closing state. The second unlocking part is connected with the hook component and can rotate the hook component in the midway of opening the door.

Description

Technical Field

[0001] The present invention relates to a landing door and an elevator having a locking mechanism. Background Art

[0002] Conventionally, a locking mechanism has been provided in a landing door provided on the landing side of an elevator. As a result, the landing door cannot be manually opened from the landing side unless it is unlocked. As a result, the landing door can prevent passengers from falling into the hoistway.

[0003] In the case of performing maintenance or inspection of the elevator, or in the case of a person being trapped in the car, an operator unlocks the locking mechanism from the landing side and manually opens the landing door. During maintenance work on the elevator, the operator sometimes opens the landing door and stands on the car.

[0004] Patent Document 1 discloses an elevator having a first door locking device and a second door locking device arranged in the vertical direction. The first door locking device locks the landing side door in a closed state. The second door locking device limits the opening width of the landing side door to a second opening width smaller than a first opening width in a fully open state. The elevator disclosed in Patent Document 1 limits the opening width of the landing side door to the second opening width, and can confirm that the car is arranged at the boarding floor.

[0005] Prior Art Documents

[0006] Patent Documents

[0007] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2022-24571 Summary of the Invention

[0008] Problems to be Solved by the Invention

[0009] However, when the two door locking devices disclosed in Patent Document 1 are used for various landing doors, it is difficult to secure a space for arranging the two door locking devices. In addition, providing two door locking devices complicates the assembly work of the landing door and hinders cost reduction.

[0010] In view of the above problems, an object of the present invention is to provide a landing door and an elevator capable of reducing the number of components of a locking mechanism capable of performing two-stage locking.

[0011] Means for Solving the Problems

[0012] In order to solve the above problems and achieve the object, a landing door according to one aspect of the present invention includes: a door main body that slides in the horizontal direction and opens and closes an entrance communicating with a hoistway; and a locking mechanism. The locking mechanism locks the door main body in a door-closed state where the door main body is closed and in an intermediate door-opening state where the door main body is opened from the door-closed state to a predetermined distance. The locking mechanism has a hook member, a hook receiving portion, a biasing member, a first unlocking portion, and a second unlocking portion. The hook member has a first hook and a second hook, and rotates about a rotation axis perpendicular to the sliding direction and the vertical direction of the door main body. The hook receiving portion engages with the first hook in the door-closed state and engages with the second hook in the intermediate door-opening state. The biasing member biases the hook member so that the first hook and the second hook are in a posture facing the hook receiving portion in the sliding direction of the door main body. The first unlocking portion is connected to the hook member and can rotate the hook member in the door-closed state. The second unlocking portion is connected to the hook member and can rotate the hook member in the intermediate door-opening state.

[0013] In addition, an elevator according to one aspect of the present invention includes: a car that moves up and down in a hoistway; and the above landing door.

[0014] Effect of the Invention

[0015] According to the landing door and the elevator having the above structure, the number of components of the locking mechanism capable of performing two-stage locking can be reduced. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of an elevator showing one embodiment.

[0017] Figure 2 It is a side view showing a state where the car of an elevator according to one embodiment stops at an arbitrary floor.

[0018] Figure 3 It is a view of the car door of an elevator showing one embodiment.

[0019] Figure 4 It is a front view of a landing door according to one embodiment as viewed from the car side.

[0020] Figure 5 It is a perspective view of a landing locking mechanism according to one embodiment.

[0021] Figure 6 It is a perspective view showing a state where the hook receiving portion is removed from a landing locking mechanism according to one embodiment.

[0022] Figure 7 It is a front view of a landing locking mechanism according to one embodiment.

[0023] Figure 8It is a front view showing the unlocked state of the car - side locking mechanism of an elevator according to an embodiment.

[0024] Figure 9 It is a front view showing the opening operation of the car door of an elevator according to an embodiment.

[0025] Figure 10 It is a view showing the landing locking mechanism when the door body of a landing door is in the closed state according to an embodiment.

[0026] Figure 11 It is a view showing the landing locking mechanism when the door body of a landing door moves to the unlocking position according to an embodiment.

[0027] Figure 12 It is a view showing the landing locking mechanism when the door body of a landing door is in the half - open state according to an embodiment. Detailed Embodiment

[0028] Hereinafter, with reference to Figures 1 to 12 the elevator according to the embodiment example will be described. In addition, in each figure, the same symbols are assigned to common components.

[0029] 1. Structure of the Elevator

[0030] First, with reference to Figures 1 to 3 the structure of an elevator according to an embodiment will be described.

[0031] Figure 1 It is a schematic structural diagram showing an example of the structure of an elevator according to an embodiment. Figure 2 It is a side view showing the state where the car stops at an arbitrary floor. Figure 3 It is a front view of observing the car door of the car from the landing side.

[0032] As Figure 1 shown, the elevator 1 is a so - called machine - room - less elevator that does not have a machine room above the hoistway 100 formed in a building structure. In addition, the elevator of the present invention is not limited to a machine - room - less elevator and may also be an elevator having a machine room above the hoistway 100.

[0033] The elevator 1 has a car 110 that moves up and down in the hoistway 100, a traction machine 120, a counterweight 130, a first driven pulley 140, a second driven pulley 150, and a rope 170.

[0034] A pulling pulley 111 is provided at the lower part of the car 110. The rope 170 is wound around the pulling pulley 111. In addition, a detailed description of the car 110 will be given later.

[0035] A counterweight pulley 131 is provided at the upper part of the counterweight 130. A rope 170 is wound around the counterweight pulley 131. The traction machine 120 is arranged at the lowermost part of the hoistway 100. The traction machine 120 hoists and lowers the car 110 and the counterweight 130 in a bucket-like manner via the rope 170. The drive of the traction machine 120 is controlled by a control unit (not shown).

[0036] The first driven pulley 140 and the second driven pulley 150 are rotatably installed at the uppermost part of the hoistway 100. One end and the other end of the rope 170 are fixed to the uppermost part of the hoistway 100. After the rope 170 is routed from the counterweight pulley 131 provided on the counterweight 130 over the first driven pulley 140, it is successively wound around the traction machine 120, the second driven pulley 150, and the lifting pulley 111 of the car 110.

[0037] The car 110 and the counterweight 130 are hoisted and lowered in the hoistway 100 according to the drive of the traction machine 120. Hereinafter, the direction in which the elevator car 110 and the counterweight 130 are hoisted and lowered is defined as the vertical direction.

[0038] In addition, as Figure 2 shown, the building structure has a landing 101 for the car 110 to stop at each floor. An entrance / exit 102 communicating with the hoistway 100 is formed at the landing 101. People or objects enter and exit the car 110 through the entrance / exit 102. A landing door 210 is arranged at the entrance / exit 102. The landing door 210 opens and closes the entrance / exit 102.

[0039] The landing door 210 has a pair of door bodies 211A, 211B, a landing side door unit 212, and a landing side sill 213. The landing side door unit 212 is arranged at the upper end in the vertical direction of the entrance / exit 102. The landing side sill 213 is arranged at the lower end in the vertical direction of the entrance / exit 102. The landing side door unit 212 and the landing side sill 213 support the pair of door bodies 211A, 211B so as to be slidable in the horizontal direction. The structure of the landing side door unit 212 will be described later.

[0040] [Car]

[0041] Next, the structure of the car 110 will be described.

[0042] As Figure 1 shown, the car 110 has a car compartment 10 for people or objects to enter and exit, a pair of car doors 11A, 11B, a car side door unit 12, and a car side sill 13 (see Figure 2 ). An opening part opened and closed by the pair of car doors 11A, 11B is provided on one side of the car compartment 10. People or objects enter and exit the car compartment 10 through the opening part.

[0043] The car-side door unit 12 is arranged at the upper end of the opening of the car compartment 10 in the vertical direction. The car-side sill 13 is arranged at the lower end of the opening of the car compartment 10 in the vertical direction. The car-side door unit 12 and the car-side sill 13 support a pair of car doors 11A and 11B so as to be slidable in the horizontal direction.

[0044] As Figure 1 and Figure 3 shown, the car-side door unit 12 has a car-side door rail 15, a driving part 16 (refer to Figure 1 ), a transmission belt 17, and a driven roller 18. The car-side door rail 15 extends along the sliding direction of a pair of car doors 11A and 11B.

[0045] The driving part 16 is arranged at one end of the car-side door unit 12 in the horizontal direction. The driven roller 18 is arranged at the other end of the car-side door unit 12 in the horizontal direction. The transmission belt 17 is wound around the driving shaft of the driving part 16 and the driven roller 18.

[0046] The transmission belt 17 is formed into a ring shape with both ends in the long side direction connected. When the driving shaft of the driving part 16 rotates, the transmission belt 17 moves in a cycle between the driven roller 18 and the driving shaft of the driving part 16. The transmission belt 17 is formed into a ring shape in which the upper part and the lower part move in opposite directions in the horizontal direction. A first connecting member 22 described later is connected to the lower part of the transmission belt 17. A second connecting member 23 described later is connected to the upper part of the transmission belt 17.

[0047] A fixed hook member 34 and a cam member 57 of a car-side locking mechanism 30 described later are fixed to the car-side door unit 12. The fixed hook member 34 and the cam member 57 are arranged above the first car door 11A in the vertical direction when the pair of car doors 11A and 11B are closed.

[0048] Next, a pair of car doors 11A and 11B will be described.

[0049] As Figure 3 shown, a pair of car doors 11A and 11B are each formed into a rectangle. A first door hanger 21A is installed at the upper end of the first car door 11A in the vertical direction. A second door hanger 21B is installed at the upper end of the second car door 11B in the vertical direction. Sliders 14 are provided at the lower ends of the pair of car doors 11A and 11B in the vertical direction. The sliders 14 are slidably engaged with guide grooves provided in the car-side sill 13.

[0050] Moving rollers 24 (not shown) are rotatably supported on the first door hanger 21A and the second door hanger 21B respectively. The moving rollers 24 are rollably engaged with the car-side door rail 15.

[0051] The first door hanger 21A has a first connecting member 22. The first connecting member 22 protrudes upward from the upper end portion of the first door hanger 21A in the vertical direction. The first connecting member 22 is connected to the lower part of the transmission belt 17. The second door hanger 21B has a second connecting member 23. The second connecting member 23 protrudes upward from the upper end portion of the second door hanger 21B in the vertical direction. The second connecting member 23 is connected to the upper part of the transmission belt 17.

[0052] When the transmission belt 17 moves cyclically, the pair of car doors 11A, 11B slide in the door opening direction or the door closing direction via the first connecting member 22 and the second connecting member 23. The door opening direction is the direction in which the pair of car doors 11A, 11B approach each other along the car side door track 15. The door closing direction is the direction in which the pair of car doors 11A, 11B move away from each other along the car side door track 15.

[0053] A safety edge 25 and a car side locking mechanism 30 are provided on the first car door 11A. The safety edge 25 is supported at the end portion on the door closing direction side of the first car door 11A, that is, the door stop side end portion 11a close to the second car door 11B.

[0054] The safety edge 25 is formed by a long strip member extending in the vertical direction. The length of the safety edge 25 in the vertical direction is set to be substantially the same as the length of the first car door 11A in the vertical direction. The safety edge 25 is supported at the door stop side end portion 11a of the first car door 11A via a pair of link members so as to be movable in the vertical direction and the opening and closing directions.

[0055] At the door stop side end portion 11a of the first car door 11A, a detection portion (not shown) for detecting the movement of the safety edge 25 is arranged near the link member that supports the safety edge 25. The detection portion detects the movement of the safety edge 25. The movement of the safety edge 25 means that a load is applied to the safety edge 25.

[0056] [Car side locking mechanism]

[0057] Next, the car side locking mechanism 30 will be described.

[0058] As Figure 3 shown, the car side locking mechanism 30 has a substrate 31, a first car side engaging member 32, a locking side hook member 33, a fixed hook member 34, a rotating shaft 35, a locking holding member 39, and a pair of first link members 41A, 41B. In addition, the car side locking mechanism 30 has a second car side engaging member 52, a cam member 57, and a pair of second link members 61A, 61B.

[0059] The substrate 31 is formed in a substantially flat plate shape. The substrate 31 is fixed to the first door hanger 21A. Hereinafter, the opening direction of the first car door 11A is referred to as the jamb side, and the closing direction of the first car door 11A is referred to as the strike side. A pair of first link members 41A and 41B are arranged at the strike-side end portion of the substrate 31.

[0060] The pair of first link members 41A and 41B are composed of a lower first link member 41A and an upper first link member 41B. The lower first link member 41A is arranged at the lower end portion of the substrate 31 in the up-down direction. The upper first link member 41B is arranged at the upper end portion of the substrate 31 in the up-down direction. The lower first link member 41A and the upper first link member 41B are respectively rotatably supported by the substrate 31 via a link shaft 42.

[0061] Shaft portions 43 are respectively arranged at the ends of the pair of first link members 41A and 41B on the side opposite to the link shaft 42. A first car-side engaging member 32 is mounted on the shaft portions 43 of the pair of first link members 41A and 41B. Therefore, the first car-side engaging member 32 is movably supported by the substrate 31 via the pair of first link members 41A and 41B.

[0062] The first car-side engaging member 32 is formed in a long strip shape extending a predetermined length in the up-down direction. A transmission portion 36 is formed at the middle portion of the first car-side engaging member 32 in the longitudinal direction. The transmission portion 36 protrudes from the jamb-side end portion of the first car-side engaging member 32. The transmission portion 36 contacts a transmission pin 37 described later.

[0063] A first stopper 45 fixed to the substrate 31 is arranged near the lower first link member 41A. When the car-side locking mechanism 30 is in the locked state, the first stopper 45 abuts against the jamb side of the lower first link member 41A. Therefore, the counterclockwise rotation of the lower first link member 41A is restricted by the first stopper 45. In addition, in the present embodiment, the car-side locking mechanism 30 being in the locked state means a state in which the car-side locking mechanism 30 locks the opening and closing operations of the pair of car doors 11A and 11B. Figure 3 In the present embodiment, the car-side locking mechanism 30 being in the locked state means a state in which the car-side locking mechanism 30 locks the opening and closing operations of the pair of car doors 11A and 11B.

[0064] A plurality of second stoppers 46 fixed to the substrate 31 are arranged on the strike side of the first car-side engaging member 32. The second stoppers 46 are arranged at a predetermined interval from the first car-side engaging member 32 when the car-side locking mechanism 30 is in the locked state. And when the pair of first link members 41A and 41B rotate to move the first car-side engaging member 32 toward the strike side, the first car-side engaging member 32 abuts against the second stoppers 46. Thereby, the operations of the first car-side engaging member 32 and the pair of first link members 41A and 41B are restricted by the second stoppers 46.

[0065] The rotating shaft 35 is disposed in the substrate 31 on the jamb side relative to the first car-side engaging member 32. The locking-side hook member 33 is rotatably supported by the rotating shaft 35.

[0066] The locking-side hook member 33 has a hook portion 33a, a rotation receiving portion 33b, a connecting portion 33c, and an unlocking receiving portion 33d. The rotation receiving portion 33b is rotatably supported by the rotating shaft 35. A transmission pin 37 is disposed below the rotating shaft 35 in the vertical direction and on the door stop side of the rotation receiving portion 33b.

[0067] The transmission pin 37 contacts the transmission portion 36 provided on the first car-side engaging member 32. When the first car-side engaging member 32 moves downward in the vertical direction and toward the door stop side via a pair of first link members 41A and 41B, the operation of the first car-side engaging member 32 is transmitted to the transmission pin 37 via the transmission portion 36. Thus, the locking-side hook member 33 rotates about the rotating shaft 35 Figure 3 in the counterclockwise direction (unlocking direction).

[0068] The connecting portion 33c projects from the end portion on the door stop side of the rotation receiving portion 33b. The hook portion 33a is formed at the end portion of the connecting portion 33c on the side opposite to the rotation receiving portion 33b. The hook portion 33a projects toward the door stop side relative to the first car-side engaging member 32. When the car-side locking mechanism 30 is in the locked state, the hook portion 33a is disposed above the fixed hook member 34 in the vertical direction and engages with the fixed hook member 34 with a predetermined locking gap L1 therebetween.

[0069] The unlocking receiving portion 33d projects upward from the upper end portion in the vertical direction of the end portion on the jamb side of the rotation receiving portion 33b. The unlocking receiving portion 33d is disposed on the jamb side relative to the rotating shaft 35 that supports the rotation receiving portion 33b. The unlocking receiving portion 33d engages with an unlocking lever 54 described later. When the unlocking receiving portion 33d is pulled toward the jamb side by the unlocking lever 54, the locking-side hook member 33 rotates about the rotating shaft 35 and is displaced in the unlocking direction.

[0070] The locking holding member 39 is disposed at the upper end portion in the vertical direction of the connecting portion 33c of the locking-side hook member 33. The locking holding member 39 is disposed on the door stop side relative to the first car-side engaging member 32. The locking holding member 39 biases the locking-side hook member 33 downward in the vertical direction, that is, in the locking direction, via the connecting portion 33c.

[0071] As the locking holding member 39 in this example, a compression coil spring is applied. In addition, as the locking holding member 39, it is not limited to a compression coil spring, and various other elastic members such as a leaf spring or rubber may also be used.

[0072] In addition, a pair of second link members 61A and 61B are disposed at the end portion of the substrate 31 on the doorframe side. The pair of second link members 61A and 61B are composed of a lower second link member 61A and an upper second link member 61B. The lower second link member 61A is disposed at the lower end portion of the substrate 31 in the vertical direction. The upper second link member 61B is disposed at the upper end portion of the substrate 31 in the vertical direction. The lower second link member 61A and the upper second link member 61B are respectively rotatably supported by the substrate 31 via a link shaft 62.

[0073] Shaft portions 63 are respectively disposed at the end portions of the pair of second link members 61A and 61B on the side opposite to the link shaft 62. A second car-side engaging member 52 is mounted on the shaft portion 63. Therefore, the second car-side engaging member 52 is movably supported by the substrate 31 via the pair of second link members 61A and 61B.

[0074] The second car-side engaging member 52 is formed in a long strip shape extending a predetermined length in the vertical direction. The second car-side engaging member 52 is disposed on the substrate 31 at a predetermined interval from the first car-side engaging member 32. The interval between the first car-side engaging member 32 and the second car-side engaging member 52 is set to be larger than the interval between the landing-side engaging members 235 and 236 described later. Thus, the landing-side engaging members 235 and 236 can pass between the first car-side engaging member 32 and the second car-side engaging member 52 in the vertical direction.

[0075] In addition, a third stopper 65 fixed to the substrate 31 is disposed below the upper second link member 61B in the vertical direction. The upper second link member 61B that rotates clockwise abuts against the third stopper 65 (see Figure 8 ). Thereby, the rotational movement of the upper second link member 61B is restricted, and the downward movement of the second car-side engaging member 52 in the vertical direction is restricted.

[0076] A fourth stopper 66 fixed to the substrate 31 is disposed on the doorframe side of the second car-side engaging member 52. When the pair of second link members 61A and 61B rotate and the second car-side engaging member 52 moves toward the doorframe side, the second car-side engaging member 52 abuts against the fourth stopper 66. Thereby, the movement of the second car-side engaging member 52 and the pair of second link members 61A and 61B is restricted by the fourth stopper 66.

[0077] The upper end portion of the second car-side engaging member 52 protrudes upward in the vertical direction from the upper end portion of the first door hanger 21A. A cam roller 53 is rotatably mounted at the upper end portion of the second car-side engaging member 52. In a state where the pair of car doors 11A and 11B are closed, the cam roller 53 abuts against a cam member 57 fixed to the car-side door unit 12.

[0078] The cam member 57 is formed in a substantially arc shape, and the door pocket side of the first car door 11A is open and bent toward the door stop side. By the cam roller 53 abutting against the cam member 57, the position of the second car-side engaging member 52 is maintained as Figure 3 the locked state shown. That is, the second car-side engaging member 52 is maintained at a position where the upper second link member 61B and the third stopper 65 do not abut and the second car-side engaging member 52 and the fourth stopper 66 do not abut. When the cam roller 53 separates from the cam member 57, the second car-side engaging member 52 moves downward in the vertical direction by its own weight.

[0079] An unlocking lever 54 is fixed to the second car-side engaging member 52. The unlocking lever 54 is disposed between the cam roller 53 and the upper second link member 61B in the second car-side engaging member 52. The unlocking lever 54 projects from the second car-side engaging member 52 toward the door stop side. The unlocking lever 54 faces the unlocking receiving portion 33d of the locking-side hook member 33 at an appropriate distance in the locked state. When the second car-side engaging member 52 moves toward the door pocket side, the unlocking lever 54 engages with the unlocking receiving portion 33d and pulls the unlocking receiving portion 33d toward the door pocket side.

[0080] [Landing-side door unit]

[0081] Next, Figure 4 the structure of the landing-side door unit 212 will be described.

[0082] Figure 4 is a front view of the landing door 210 as viewed from the car 110 side.

[0083] As Figure 4 shown, the landing-side door unit 212 includes a unit base 214, a landing-side door track 215, a first pulley 216, a second pulley 218, a transmission belt 217, door hangers 221A, 221B, and a landing-side locking mechanism 230.

[0084] Hereinafter, the direction in which the pair of door bodies 211A, 211B slide will be set as the sliding direction. And, the direction orthogonal to the sliding direction and the vertical direction will be set as the "depth direction". The unit base 214 is formed in a substantially rectangular parallelepiped shape that is long in the sliding direction. The landing-side door track 215, the first pulley 216, and the second pulley 218 are installed on the unit base 214.

[0085] The door hangers 221A, 221B are installed at the upper ends in the vertical direction of the pair of door bodies 211A, 211B. Movable rollers 224 are rotatably installed on the door hangers 221A, 221B. The movable rollers 224 are rollably engaged with the landing-side door track 215. The landing-side door track 215 extends along the sliding direction of the pair of door bodies 211A, 211B.

[0086] The door hanger 221A has a connecting member 222. The connecting member 222 protrudes upward from the upper end portion of the door hanger 221A in the vertical direction. The door hanger 221B has a connecting member 223. The connecting member 223 protrudes upward from the upper end portion of the door hanger 221B in the vertical direction. The door hanger 221A faces the first door hanger 21A of the car 110. A landing side locking mechanism 230 is provided on the door hanger 221A. The structure of the landing side locking mechanism 230 will be described later.

[0087] The first pulley 216 is arranged on one side of the unit base 214 in the horizontal direction. The second pulley 218 is arranged on the other side of the unit base 214 in the horizontal direction. A transmission belt 217 is wound around the first pulley 216 and the second pulley 218. The transmission belt 217 is formed into a loop with both ends in the long side direction connected. The transmission belt 217 is formed into a loop in which the upper and lower parts move in opposite directions to each other in the horizontal direction.

[0088] 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 in a cycle, the pair of door bodies 211A, 211B move in the closing direction or the opening direction via the connecting members 222, 223. The opening direction is the direction in which the pair of door bodies 211A, 211B approach each other. The closing direction is the direction in which the pair of door bodies 211A, 211B separate from each other.

[0089] [Landing side locking mechanism]

[0090] The landing side locking mechanism 230 has a hook member 231, a rotating shaft 232, a hook receiving portion 234, a first landing side engaging member 235, a second landing side engaging member 236, a substrate 237, a locking holding member 239, and a stopper 241.

[0091] The substrate 237 is formed in a substantially flat plate shape. The substrate 237 is fixed to the door hanger 221A. The hook receiving portion 234 is fixed to the door hanger 221B or the door body 211B.

[0092] The rotating shaft 232 and the second landing side engaging member 236 are fixed to the substrate 237. The rotating shaft 232 supports the hook member 231 so as to be rotatable. The stopper 241 fixed to the substrate 237 abuts against the hook member 231. The stopper 241 restricts the counterclockwise rotation of the hook member 231. The first landing side engaging member 235 is rotatably mounted on the upper end portion of the hook member 231.

[0093] The first landing-side engaging member 235 and the second landing-side engaging member 236 are arranged opposite to each other in the sliding direction of a pair of door bodies 211A and 211B. When the car 110 stops at any floor, the first landing-side engaging member 235 and the second landing-side engaging member 236 are arranged between the first car-side engaging member 32 and the second car-side engaging member 52 in the car-side locking mechanism 30 (see Figure 3 ).

[0094] One end of the locking holding member 239 is fixed to the substrate 237. The other end of the locking holding member 239 is fixed to the upper end portion of the hook member 231 in the vertical direction. The locking holding member 239 applies a force to the hook member 231 in the direction of engaging with the hook receiving portion 234, that is, downward in the vertical direction. Thereby, the engagement between the hook member 231 and the hook receiving portion 234 is maintained, and the locked state of the landing-side locking mechanism 230 is maintained.

[0095] The locking holding member 239 corresponds to the biasing member of the present invention. As the locking holding member 239 in this example, a compression coil spring is applied. In addition, as the locking holding member 239, it is not limited to a compression coil spring, and various other elastic members such as a leaf spring or rubber can also be used.

[0096] The force for the locking holding member 239 to maintain the locked state of the landing-side locking mechanism 230 is set to be greater than the force for the locking holding member 39 of the car-side door unit 12 (see Figure 3 ) to maintain the locked state of the car-side locking mechanism 30. That is, the acting force of the locking holding member 39 of the car-side locking mechanism 30 is set to be smaller than the acting force of the locking holding member 239 of the landing-side locking mechanism 230.

[0097] The landing-side door unit 212 has an operating rope 245. One end of the operating rope 245 is connected to the side of the hook member 231 opposite to the side facing the hook receiving portion 234. The operating rope 245 is used when manually unlocking the landing-side locking mechanism 230 from the hoistway 100. When the operating rope 245 is pulled, a force is applied to the hook member 231 to rotate in a direction separating from the hook receiving portion 234 about the rotation shaft 232. As a result, the hook member 231 rotates against the acting force of the locking holding member 239, and the landing-side locking mechanism 230 is unlocked.

[0098] [Hook member and hook receiving portion]

[0099] Next, Figures 5 to 7 The structures of the hook member 231 and the hook receiving portion 234 will be described.

[0100] Figure 5 is a front view showing the landing-side locking mechanism 230. Figure 6It is a perspective view showing the landing side locking mechanism 230. Figure 7 It is a perspective view showing the state after removing the hook receiving part 234 from the landing side locking mechanism 230.

[0101] As Figures 5 to 7 shown, the hook member 231 has a hook base 251, an extension part 252, and an unlocking part 253.

[0102] The hook base 251 is formed in a plate shape that is long in the horizontal direction. The hook base 251 is rotatably supported by the above-mentioned rotating shaft 232. The other end of the above-mentioned locking holding member 239 is fixed to the upper end of the hook base 251 (refer to Figure 4 ). A first hook 251a is formed at one end of the hook base 251 in the longitudinal direction. In the state where the pair of door bodies 211A and 211B (refer to Figure 4 ) are in the closed state, the first hook 251a engages with the hook receiving part 234.

[0103] The extension part 252 is formed in a plate shape that is slender and rectangular in the horizontal direction. A second hook 252a is formed at one end of the extension part 252 in the longitudinal direction. The other end of the extension part 252 in the longitudinal direction is fixed to the plane on the hoistway side of the hook base 251. The fixing of the extension part 252 to the hook base 251 can be achieved by welding or screw fastening.

[0104] One end of the extension part 252 in the longitudinal direction protrudes in the sliding direction from one end of the hook base 251. The second hook 252a of the extension part 252 faces the first hook 251a of the hook base 251 in the sliding direction. As Figure 5 shown, the distance from the surface of the first hook 251a that engages with the hook receiving part 234 to the surface of the second hook 252a that engages with the hook receiving part 234 is set to a predetermined distance M1.

[0105] When the pair of door bodies 211A and 211B (refer to Figure 4 ) are opened from the closed state to the predetermined distance M1, the second hook 252a engages with the hook receiving part 234. Thus, the sliding of the pair of door bodies 211A and 211B is locked in the middle of the opening process, that is, in the mid-opening state. In the mid-opening state, the pair of door bodies 211A and 211B open to such an extent that an operator (person) cannot pass through the entrance 102 (refer to Figure 2 ). In addition, the pair of door bodies 211A and 211B are double doors. Therefore, the gap (opening) between the pair of door bodies 211A and 211B is approximately twice the predetermined distance M1.

[0106] As Figure 6As shown, the unlocking portion 253 has a connecting portion 261 and an arm portion 262. The connecting portion 261 is formed in a substantially quadrilateral plate shape. The connecting portion 261 is fixed to the plane on the hoistway 100 side of the hook base 251 using screws. The arm portion 262 is continuous with the end face on the hook receiving portion 234 side of the connecting portion 261. The arm portion 262 is located on the landing side (building side) relative to the extension portion 252.

[0107] The arm portion 262 is composed of a plate body having a substantially L-shaped form when viewed from above. The arm portion 262 has an intermediate plate piece and an operation plate piece. The intermediate plate piece is continuous with the connecting portion 261 and extends in the depth direction. The intermediate plate piece has a plane orthogonal to the sliding direction. The operation plate piece is continuous with the intermediate plate piece and extends in the sliding direction.

[0108] At the upper end of the operation plate piece in the unlocking portion 253, a first unlocking piece 263 and a second unlocking piece 264 are formed. The first unlocking piece 263 corresponds to the first unlocking portion of the present invention, and the second unlocking piece 264 corresponds to the second unlocking portion of the present invention. The first unlocking piece 263 and the second unlocking piece 264 are located on the landing side relative to the first hook 251a and the second hook 252a.

[0109] The first unlocking piece 263 and the second unlocking piece 264 are composed of a plate body having a plane orthogonal to the vertical direction. The first unlocking piece 263 is located closer to the connecting portion 261 side than the second unlocking piece 264. The distance from the central portion of the first unlocking piece 263 to the central portion of the second unlocking piece 264 is set to a predetermined distance M1. When pressing the first unlocking piece 263 or the second unlocking piece 264 from below using a rod or the like, the hook member 231 rotates about the rotation axis 232.

[0110] The hook receiving portion 234 is mounted on the unit base 214 via a mounting bracket 271. The hook receiving portion 234 is a bent processing member having a substantially L-shaped form when viewed from the depth direction. The hook receiving portion 234 has a vertical piece extending in the vertical direction and a horizontal piece extending in the sliding direction. A locking projection 234a is formed at the end of the horizontal piece opposite to the end continuous with the vertical piece. The locking projection 234a engages with the above-mentioned first hook 251a and second hook 252a.

[0111] An auxiliary hook receiving member 254 is mounted on the horizontal piece of the hook receiving portion 234. In a state where the pair of door bodies 211A, 211B (refer to Figure 4 ) are in the closed state, the second hook 252a engages with the auxiliary hook receiving member 254.

[0112] 2. Opening operation of the car door and the landing door

[0113] Next, referring to Figure 2 、 Figure 3 、 Figure 8 、Figure 9 The opening operation of the elevator 1 having the above structure will be described.

[0114] Figure 8 It is a front view showing the state where the car - side locking mechanism 30 is unlocked. Figure 9 It is a front view showing the opening operation of the car door.

[0115] As Figure 2 shown, when the car 110 stops at an arbitrary floor, the car - side door unit 12 and the landing - side door unit 212 face each other. Also, the car - side locking mechanism 30 and the landing - side locking mechanism 230 face each other. At this time, as Figure 3 shown, the first landing - side engaging member 235 and the second landing - side engaging member 236 are inserted between the first car - side engaging member 32 and the second car - side engaging member 52.

[0116] In Figure 3 the state shown, when the drive unit 16 (refer to Figure 1 ) is driven, the pair of car doors 11A, 11B move in the opening direction in which they separate from each other. As a result, the first car - side engaging member 32 abuts against the first landing - side engaging member 235 (refer to Figure 8 ).

[0117] When the first car door 11A further moves in the opening direction, the first car - side engaging member 32 is pressed by the first landing - side engaging member 235 in the direction opposite to the moving direction of the first car door 11A. As a result, the pair of first link members 41A, 41B rotate about the link shaft 42 respectively. Then, the first car - side engaging member 32 moves in the direction opposite to the moving direction of the first car door 11A and downward in the vertical direction.

[0118] The moving operation of the first car - side engaging member 32 is transmitted to the upper - locking - side hook member 33 via the transmission portion 36 and the transmission pin 37. As a result, the upper - locking - side hook member 33 rotates about the rotation shaft 35 against the biasing force of the upper - locking holding member 39. The upper - locking - side hook member 33 rotates from the locked position where the hook portion 33a engages with the fixed hook member 34 to the unlocked position facing upward in the vertical direction. Thus, the engagement between the hook portion 33a and the fixed hook member 34 is released, and the car - side locking mechanism 30 is unlocked. The first car - side engaging member 32 stops its movement by abutting against the second stopper 46.

[0119] As Figure 9As shown, when the first car door 11A further moves in the door-opening direction, the cam roller 53 of the second car-side engaging member 52 disengages from the cam member 57. Therefore, the second car-side engaging member 52 moves downward in the vertical direction due to its own weight. The pair of second link members 61A, 61B connected to the second car-side engaging member 52 rotate about the link shaft 62. As a result, the second car-side engaging member 52 moves in the direction approaching the first car-side engaging member 32, that is, the door stop side. After that, the second car-side engaging member 52 abuts against the second landing-side engaging member 236. Thus, the two landing-side engaging members 235, 236 are held by the first car-side engaging member 32 and the second car-side engaging member 52.

[0120] When the two landing-side engaging members 235, 236 are held by the first car-side engaging member 32 and the second car-side engaging member 52, the engagement between the pair of car doors 11A, 11B and the pair of door bodies 211A, 211B is completed. Thereafter, the pair of door bodies 211A, 211B and the pair of car doors 11A, 11B move together in the door-opening direction.

[0121] When the first car door 11A further moves in the door-opening direction, the first landing-side engaging member 235 is pressed by the first car-side engaging member 32. Thus, the hook member 231 of the landing-side locking mechanism 230 (see Figure 4 ) rotates about the rotation shaft 232 against the acting force of the locking holding member 239. As a result, the landing-side locking mechanism 230 is unlocked, and the pair of door bodies 211A, 211B and the car doors 11A, 11B move together in the door-opening direction. After that, the car doors 11A, 11B of the car 110 and the pair of door bodies 211A, 211B of the landing door 210 are in the door-open state.

[0122] 3. Unlocking of the Landing-Side Locking Mechanism

[0123] Next, with reference to Figures 10 to 12 the unlocking of the landing-side locking mechanism 230 will be described.

[0124] Figure 10 FIG. is a view showing the landing-side locking mechanism 230 when the pair of door bodies 211A, 211B of the landing door 210 are in the door-closed state. Figure 11 FIG. is a view showing the landing-side locking mechanism 230 when the pair of door bodies 211A, 211B move to the unlocking position. Figure 12 FIG. is a view showing the landing-side locking mechanism 230 when the pair of door bodies 211A, 211B are in the midway door-open state.

[0125] As shown in Figure 10As shown, when a pair of door bodies 211A and 211B are in the closed state, a gap with a specific distance M2 is formed between the first hook 251a of the hook member 231 and the engaging protrusion 234a of the hook receiving portion 234. In addition, a gap with a specific distance M2 is formed between the second hook 252a and the auxiliary hook receiving member 254. Therefore, the pair of door bodies 211A and 211B can be opened to a specific distance M2 in the closed state.

[0126] The specific distance M2 is shorter than a predetermined distance M1 (refer to Figure 5 ). The pair of door bodies 211A and 211B are double doors. Therefore, the gap (opening) between the pair of door bodies 211A and 211B is approximately twice the specific distance M2. When the pair of door bodies 211A and 211B are opened to the specific distance M2, the pair of door bodies 211A and 211B are disposed at the unlocking position.

[0127] At Figure 11 the unlocking position of the pair of door bodies 211A and 211B shown, the first unlocking piece 263 is disposed at a position where it can be operated from the gap between the pair of door bodies 211A and 211B. Specifically, the first unlocking piece 263 faces an operation opening portion (not shown) provided on the unit base 214.

[0128] An operator presses the first unlocking piece 263 facing the operation opening portion from below using a rod-shaped tool or the like. As a result, the hook member 231 rotates about the rotation shaft 232, the engagement between the first hook 251a and the engaging protrusion 234a is released, and the engagement between the second hook 252a and the auxiliary hook receiving member 254 is released. As a result, the pair of door bodies 211A and 211B can slide in the opening direction.

[0129] When the first hook 251a passes over the engaging protrusion 234a, the first unlocking piece 263 moves to a position where it does not face the operation opening portion. As a result, the operator cannot press the first unlocking piece 263 from below, and the hook member 231 is urged by the locking holding member 239 and rotates about the rotation shaft 232. As a result, the second hook 252a faces the engaging protrusion 234a of the hook receiving portion 234 in the sliding direction.

[0130] When the pair of door bodies 211A and 211B are slid in the opening direction, the second hook 252a engages with the engaging protrusion 234a of the hook receiving portion 234. As a result, the sliding of the pair of door bodies 211A and 211B in the opening direction is locked in the middle of the opening state. At this time, the second unlocking piece 264 faces an operation opening portion (not shown) of the unit base 214.

[0131] A pair of door bodies 211A and 211B are opened to such an extent that an operator (person) cannot pass through the entrance 102 (refer to Figure 2 ). Thus, the operator can get an opportunity to confirm the condition of the car 110 in the hoistway 100 before opening the pair of door bodies 211A and 211B. As a result, the landing door 210 can improve the safety during maintenance work or inspection work.

[0132] After the operator, for example, confirms that they can reach the upper part of the car, they use a rod-shaped tool or the like to press the second unlocking piece 264 facing the operation opening part from below. Thus, the hook member 231 rotates around the rotation shaft 232, and the engagement between the second hook 252a and the engagement protrusion 234a is released. As a result, the pair of door bodies 211A and 211B can slide in the opening direction from the mid-opening state.

[0133] The landing-side locking mechanism 230 with such a structure can perform two-stage locking through one hook member 231. Thus, the number of components of the landing door can be reduced. Further, since the landing-side locking mechanism 230 can perform two-stage locking, the safety when the operator opens the landing door 210 can be improved.

[0134] In the closed state, a gap with a specific distance M2 is formed between the first hook 251a and the engagement protrusion 234a of the hook receiving portion 234. In the closed state, when the operator opens the pair of door bodies 211A and 211B in the opening direction to the specific distance M2, the first unlocking piece 263 can be operated from the operation opening part (not shown). Thus, it is possible to prevent a person other than the operator from easily operating the first unlocking piece 263. In addition, the operator who knows the existence of the operation opening part can easily perform the unlocking brought about by the operation of the first unlocking piece 263.

[0135] The first unlocking piece 263 and the second unlocking piece 264 are located on the landing side relative to the first hook 251a and the second hook 252a. Thus, even without using a complex tool, it is possible to simply bring a rod-shaped tool or the like into contact with the first unlocking piece 263 and the second unlocking piece 264. As a result, the first unlocking piece 263 and the second unlocking piece 264 can be easily operated. In addition, when operating the first unlocking piece 263 or the second unlocking piece 264, a rod-shaped tool or the like does not interfere with the first hook 251a and the second hook 252a. As a result, breakage of the first hook 251a and the second hook 252a can be suppressed or prevented.

[0136] In the present embodiment, the hook member 231 has a hook base 251 and an extension portion 252 fixed to the hook base 251. However, as the hook member of the present invention, the hook base and the extension portion may be integrally formed. Thereby, the number of components of the landing side locking mechanism can be further reduced.

[0137] The landing side locking mechanism 230 includes an auxiliary hook receiving member 254 that engages with the second hook 252a in the closed door state. Thereby, the locking in the closed door state (lock release position) can be made firm. Further, in the closed door state, when the pair of door bodies 211A and 211B are to be opened, the force applied to the first hook 251a can be reduced.

[0138] The landing door and the elevator of the present invention have been described above including their functions and effects. However, the landing door and the elevator of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the invention described in the claims.

[0139] For example, in the above-described embodiment, the landing door 210 is a double door. However, the landing door of the present invention may be any door that slides to open and close the entrance 102, and may be a single door, for example.

[0140] Further, in the above-described embodiment, the operator arranges the pair of door bodies 211A and 211B at the lock release position and presses the first unlocking piece 263 facing the operation opening portion from below. However, as the landing door of the present invention, it may be configured such that an operation through hole is formed in the door body 211A or the door body 211B, and the first unlocking piece 263 is pressed from below through the through hole. In this case, it is not necessary to arrange the pair of door bodies 211A and 211B at the lock release position.

[0141] In addition, in the present specification, terms such as "parallel" and "orthogonal" are used, but they do not refer only to strict "parallel" and "orthogonal", and may also be in a state of "substantially parallel" and "substantially orthogonal" that include "parallel" and "orthogonal" and are further within the range where their functions can be exerted.

[0142] Symbol Explanation

[0143] 1 - Elevator, 10 - Car cabin, 11A, 11B - Car doors, 12 - Car side door unit, 13 - Car side door sill, 14 - Slide block, 15 - Car side door track, 16 - Driving part, 17 - Transmission belt, 18 - Driven roller, 21A - First door hanger, 21B - Second door hanger, 22 - First connecting component, 23 - Second connecting component, 24 - Moving roller, 30 - Car side locking mechanism, 100 - Lift shaft, 101 - Landing, 102 - Entrance / exit, 110 - Car, 111 - Pulley for upward pulling, 120 - Traction machine, 131 - Counterweight side pulley, 140 - First driven pulley, 150 - Second driven pulley, 170 - Rope, 210 - Landing door, 211A, 211B - Door body, 212 - Landing side door unit, 213 - Landing side door sill, 214 - Unit base, 215

[0144] - Landing side door track, 216 - First pulley, 217 - Transmission belt, 218 - Second pulley, 221A, 221B - Door hangers, 222, 223 - Connecting components, 224 - Moving roller, 230 - Landing side locking mechanism, 231

[0145] - Hook component, 232 - Rotating shaft, 234 - Hook receiving part, 234a - Engaging protrusion, 235 - First landing side engaging piece, 236 - Second landing side engaging piece, 237 - Substrate, 239 - Locking holding component, 241 - Stopper, 245 - Operating rope, 251 - Hook base, 251a - First hook, 252 - Extension part, 252a - Second hook, 253 - Unlocking part, 261 - Connecting part, 262 - Arm part, 263 - First unlocking piece, 264 - Second unlocking piece, 271 - Mounting bracket.

Claims

1. A landing door, characterized in that, it comprises: a door main body that slides in the horizontal direction to open and close an entrance / exit communicating with a hoistway; and a locking mechanism that locks the door main body in a closed state where the door main body is closed and in an intermediate opening state where the door main body is opened from the closed state to a predetermined distance, the locking mechanism having: a hook member having a first hook and a second hook and rotating about a rotation axis perpendicular to the sliding direction and the up-and-down direction of the door main body; a hook receiving portion that engages with the first hook in the closed state and engages with the second hook in the intermediate opening state; a biasing member that biases the hook member so that the first hook and the second hook are in a posture facing the hook receiving portion in the sliding direction of the door main body; a first unlocking portion connected to the hook member and capable of rotating the hook member in the closed state; and a second unlocking portion connected to the hook member and capable of rotating the hook member in the intermediate opening state.

2. The landing door according to claim 1, characterized in that, in the intermediate opening state, the opening of the door main body is such that a person cannot pass through the entrance / exit.

3. The landing door according to claim 1, characterized in that, in the closed state, a gap of a specific distance shorter than the predetermined distance is formed between the first hook and the hook receiving portion, in the closed state, when an operator opens the door main body in the opening direction to the specific distance, the first unlocking portion can be operated.

4. The landing door according to claim 3, characterized in that, the first unlocking portion and the second unlocking portion are located closer to the landing side than the first hook and the second hook.

5. The landing door according to claim 1, characterized in that, the first unlocking portion and the second unlocking portion are formed integrally.

6. The landing door according to claim 1, characterized in that, it comprises an auxiliary hook receiving portion that engages with the second hook in the closed state.

7. An elevator, characterized in that, it comprises: a car that moves up and down in a hoistway; and a landing door having a door main body that slides in the horizontal direction to open and close an entrance / exit communicating with the hoistway and a locking mechanism that locks the door main body in a closed state where the door main body is closed and in an intermediate opening state where the door main body is opened from the closed state to a predetermined distance, the locking mechanism having: a hook member having a first hook and a second hook and rotating about a rotation axis perpendicular to the sliding direction and the up-and-down direction of the door main body; a hook receiving portion that engages with the first hook in the closed state and engages with the second hook in the intermediate opening state; a biasing member that biases the hook member so that the first hook and the second hook are in a posture facing the hook receiving portion in the sliding direction of the door main body; A first unlocking portion, which is connected to the hook member and can perform a rotation operation on the hook member in the closed door state; And A second unlocking portion, which is connected to the hook member and can perform a rotation operation on the hook member in the intermediate state of opening the door.

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