Elevator landing door lock device and elevator

Abstract

To provide an elevator landing door lock device that can suitably prevent a door closed detection unit, which detects that the hall door is in a fully closed state, from malfunctioning due to foreign objects such as dust.SOLUTION: A landing door lock device 4 includes, as components on the landing entrance side, a locked portion 60a and a switch 61 of a door closing detection unit, and, as components on the landing door side, a locking member 42 that engages with the locked portion 60a and an operation piece 58 for a terminal of the switch 61. The switch 61 is provided so that the terminal is aligned along a plane that intersects with the closing operation direction of the landing door, and the operation piece 58 is provided so as to come into contact with and act on the terminal of the switch 61 by translational motion associated with the closing operation of the landing door. This makes it difficult for foreign objects such as dust to accumulate on the terminal of the switch 61, preventing malfunction of the door closing detection unit.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to an elevator hall door lock device for fixing an elevator hall door in a fully closed state and preventing it from opening except under normal operation, and to an elevator equipped with the same. [Background technology]

[0002] This type of landing door lock device generally has the structure described in Patent Documents 1 and 2, and as shown in FIG. 14 , the configuration on the landing entrance / exit side includes a locked portion 60a' of a locked member 60' that is attached directly to an inner wall surface 2A' of the elevator shaft around the landing entrance or indirectly via a bracket or the like, and a switch 61' of a door closing detection unit, and the configuration on the landing door 23' side that opens and closes the landing entrance by a door hanger 230' moving laterally along the door rail 26' includes a locking member 42' that engages with the locked portion 60a' when the landing door 23' is fully closed, and an operating piece 58' for the switch 61'.

[0003] The locking member 42' is attached to the door hanger 230' so as to be able to swing, and when the landing door 23' is in a fully closed state, its tip swings vertically downward and engages with the locked portion 60a' (locked state). The operating piece 58' is attached to the tip of the locking member 42', and when the locking member 42' is in a locked state, it comes into contact with and acts on a terminal 62' of a switch 61' to turn the switch 61' OFF (or ON). The elevator control unit determines that the landing door 23' is in a fully closed state based on the OFF signal (or ON signal) of the switch 61'.

[0004] On the other hand, as a cam 70' of a landing door engagement device provided on the car door (not shown) engages with a roller 48' of the locking member 42' as the car door opens, the tip of the locking member 42' swings vertically upward and releases the engagement with the locked portion 60a' (unlocked state). When the locking member 42' enters the unlocked state, the operating piece 58' moves away from the terminal 62' of the switch 61' to turn the switch 61' ON (or OFF). The elevator control unit determines that the landing door 23' is not in a fully closed state based on the ON signal (or OFF signal) of the switch 61'. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2015-34092 A [Patent Document 2] Japanese Patent Application Publication No. 3-182493 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the above-mentioned conventional landing door lock device, the terminal 62' of the switch 61' is provided along the upward-facing surface, and foreign matter such as dust is likely to accumulate on the terminal 62'. And since the switch 61' is in the form of an interlock switch constituting part of the safety circuit of the elevator drive device, if a foreign matter causes a continuity defect in the switch 61' or a contact defect between the operating piece 58' and the terminal 62', the safety circuit will be activated, the power supply to the elevator will be cut off, the elevator will come to an emergency stop, and if there are passengers in the car, there is a risk of the passengers being trapped in the car.

[0007] Therefore, the present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide an elevator landing door lock device and an elevator that can effectively prevent a door closed detection unit, which detects whether the landing door is in a fully closed state, from malfunctioning due to foreign matter such as dust. [Means for solving the problem]

[0008] The elevator hall door lock device according to the present invention comprises: An elevator landing door locking device for fixing the landing door in a fully closed state, the device comprising: a locked part and a switch of a door closing detection part as a configuration on the landing entrance / exit side; and a locking member that engages with the locked part in a fully closed state and an operating piece for a terminal of the switch as a configuration on the landing door side that opens and closes the landing entrance / exit by moving laterally, the locking member engaging with the locked part in a fully closed state and an operating piece for a terminal of the switch as a configuration on the landing door side that opens and closes the landing entrance / exit by moving laterally, The switch is provided so that the terminal is along a plane intersecting with the closing direction of the landing door, The operating piece is provided so as to come into contact with and act on a terminal of the switch by translational motion accompanying the closing operation of the landing door. An elevator hall door lock device.

[0009] Here, as one aspect of the elevator hall door lock device according to the present invention, the locking member is a member that includes a receiving recess capable of receiving the locked portion, and is provided so as to be changeable between a locked state in which the receiving recess and the locked portion are engaged with each other in the opening direction of the landing door, and an unlocked state in which the receiving recess and the locked portion are capable of being engaged with and disengaged from each other in the opening direction of the landing door, an input unit for inputting a trigger for changing the state of the locking member from a locked state to an unlocked state; and an operation mechanism unit that transmits, to the input unit, an external force applied when the landing door is opened as a trigger input operation to the input unit. The above configuration can be adopted.

[0010] Also, in this case, The locking member may be provided with a stopper member that is changeable between a restricted state in which the locking member is engaged with the locking member to restrict the locking member from changing from the locked state to the unlocked state, and a non-restricted state in which the stopper member is disengaged from the locking member to release the restriction. The input portion is provided on the stopper member, The operation mechanism is operatively connected to the stopper member and changes the state of the stopper member from a restricted state to a released state based on an external force applied during an opening operation of the landing door. The above configuration can be adopted.

[0011] Also, in this case, The operating piece is provided on the lock member. The above configuration can be adopted.

[0012] In another aspect of the elevator hall door lock device according to the present invention, The operating mechanism unit includes an engaged portion that is engaged with a landing door engaging device provided on a car door of the elevator car, and changes the state of the stopper member from a restricted state to a released state based on an external force applied from the car door via the engaged portion in association with an opening operation of the car door. The above configuration can be adopted.

[0013] In addition, as another aspect of the elevator hall door lock device according to the present invention, The lock member and the operating piece are provided on a base that is attached to the landing door. The above configuration can be adopted.

[0014] Moreover, the elevator according to the present invention comprises: The elevator is provided with any one of the elevator landing door lock devices described above. It's an elevator. Effect of the Invention

[0015] According to the present invention, the switch is provided such that the terminal is along a plane intersecting the direction of the closing operation of the landing door, and the operating piece is provided such that it comes into contact with and acts on the terminal of the switch by translational motion accompanying the closing operation of the landing door. This makes it difficult for foreign matter such as dust to accumulate on the terminal of the switch. Therefore, according to the present invention, it is possible to suitably prevent a malfunction caused by foreign matter such as dust in the door closing detection unit that detects that the landing door is in a fully closed state. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view of an elevator. [Diagram 2] FIG. 2 is a partial cross-sectional side view of the elevator. [Diagram 3] FIG. 3 is a front view of the landing entrance with the landing door fully closed, as viewed from within the elevator shaft. [Figure 4] FIG. 4 is a front view of the landing entrance with the landing door fully open. [Diagram 5] Fig. 5(a) is a front view of the landing door lock device according to the present embodiment in a locked state as viewed from inside an elevator shaft, and Fig. 5(b) is a front view of the landing door lock device in an unlocked state. [Figure 6] Fig. 6(a) is a front view of the landing door engagement device provided on the car door, in an open state, as viewed from the landing, and Fig. 6(b) is a front view of the landing door engagement device in a closed state. [Figure 7] Fig. 7(a) is a front view of the door closing detection unit included in the landing door lock device according to the present embodiment, the door closing detection unit being in an ON state, Fig. 7(b) is a front view of the door closing detection unit in an OFF state, and Fig. 7(c) is a front view of the door closing detection unit according to another example. [Figure 8] 8(a) to 8(d) are explanatory diagrams of state changes of the landing door lock device in the process of starting an opening operation of the landing door from a fully closed state. [Figure 9] 9(a) to 9(d) are explanatory diagrams of state changes of the landing door lock device in the process in which the landing door is brought into a fully closed state by a closing operation. [Figure 10] 10(a) to 10(h) are explanatory diagrams of state changes of the door closing detection unit in the process in which the landing door is brought into a fully closed state by a closing operation. [Figure 11] Fig. 11(a) is a front view of the landing door lock device according to Alternative Embodiment 1 in a locked state as viewed from inside a hoistway, and Fig. 11(b) is a front view of the landing door lock device in an unlocked state. [Figure 12] Fig. 12(a) is a front view of a landing door lock device according to another embodiment 2 as seen from inside a hoistway, and Fig. 12(b) is a front view as seen from the landing. [Figure 13] Fig. 13(a) is a front view of a hall door lock device according to another embodiment 3 as seen from inside a hoistway, and Fig. 13(b) is a front view as seen from a hall. [Figure 14] Fig. 14(a) is a front view of a conventional hall door lock device in a locked state as viewed from inside a hoistway, and Fig. 14(b) is a front view of the hall door lock device in an unlocked state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of an elevator equipped with a hall door lock device according to the present invention will be described.

[0018] As shown in Figures 1 and 2, elevator 1 includes a hoistway 2 and a car 3. The hoistway 2 extends vertically in a building having multiple floors. The car 3 ascends and descends in the hoistway 2 by being driven by a drive mechanism, and stops at a designated floor by stopping the drive mechanism.

[0019] The car 3 is equipped with a car door 30 and a door opening and closing device 31. The car door 30 moves laterally to open and close an opening (car entrance) on the front side of the car 3 to allow passengers to get on and off. The car door 30 is of a double-opening type and a single-opening type. The door opening and closing device 31 is a device for opening and closing the car door 30, and is disposed, for example, on the upper front side of the car 3.

[0020] On the other hand, the landing 20 of each floor includes a three-sided frame 21 and a landing door device 22. The three-sided frame 21 is formed on a wall surface, and the inside of the frame forms an opening (landing entrance / exit) of a size corresponding to the opening of the car 3. As shown in Figs. 3 and 4, the landing door device 22 includes a landing door 23 and a door support structure 24. The landing door 23 moves laterally to open and close the opening 21A in the three-sided frame 21, allowing passengers to get on and off. The landing door 23 also comes in a double-leaf type and a single-leaf type corresponding to the car door 30. The landing door 23 is normally closed by elastic force, and is opened against the elastic force following the opening operation of the car door 30 of the car 3 stopped on the floor, and is closed by the elastic force accompanying the closing operation of the car door 30. The door support structure 24 is a structure that supports the landing door 23 while allowing the landing door 23 to be opened and closed.

[0021] The door support structure 24 includes a door rail 26 and a threshold 27. The door rail 26 is formed in a band shape and is provided in the left-right direction on a horizontally long plate-like base plate 25 attached to the inner wall surface 2A of the elevator shaft 2. The landing door 23 includes a door hanger 230. The door hanger 230 includes a pair of rollers 231, 231. The rollers 231, 231 are placed on the upper edge portion of the door rail 26. As a result, the landing door 23 is hung from the door rail 26 in a state in which it can slide in the left-right direction along the door rail 26. The door rail 26 is a structure that supports an upper portion of the landing door 23 while enabling the landing door 23 to be opened and closed. On the other hand, the threshold 27 is provided in the left-right direction on the inner wall surface 2A of the elevator shaft 2 along the lower edge of the opening 21A and such that both ends are wider in the left-right direction than the lower edge of the opening 21A. The threshold 27 is a structure that supports the lower part of the landing door 23 while enabling the landing door 23 to be opened and closed.

[0022] The landing door device 22 includes a landing door locking device 4. The landing door locking device 4 is a device for fixing the landing door 23 in a fully closed state and preventing the landing door 23 from being opened except by a normal operation. As shown in Fig. 5, the landing door locking device 4 includes a device main body 40 as a configuration on the landing door 23 side, and includes a locked portion 60a as a configuration on the landing entrance / exit 21A side.

[0023] The device body 40 is attached to the landing door 23 (the door hanger 230 or the upper part of the landing door 23). The locked portion 60a is a part of the locked member 60 attached to the inner wall surface 2A of the elevator shaft 2 around the landing entrance 21A (the base plate 25 of the door support structure 24, the door rail 26, or the inner wall surface 2A of the elevator shaft 2 directly or indirectly via a bracket or the like). The locked member 60 is, for example, a U-shaped member obtained by bending a rod material having a circular cross section so that both ends become bases. The locked portion 60a is a shaft body at the tip of the locked member 60. The device body 40 is disposed vertically, and the locked portion 60a is disposed along a direction perpendicular to the left and right opening and closing operation direction of the landing door 23 and along a horizontal direction.

[0024] The device main body 40 includes a base plate (base) 41, a locking member 42, a stopper member 44, a swinging body 46, and a link mechanism 50. The base plate 41 is flat and attached to the landing door 23. The base plate 41 is horizontally rectangular and has a notch 41a at one corner. The locking member 42 is rotatably supported on the base plate 41 via a support shaft 41b at a first portion of the base plate 41 so that a tip end side of the locking member 42 is positioned in the notch 41a of the base plate 41. The stopper member 44 is rotatably supported on the base plate 41 via a support shaft 41c at a second portion of the base plate 41. The swinging body 46 is rotatably supported on the base plate 41 via a support shaft 41d at a third portion of the base plate 41. The support shafts 41b to 41d are provided so as to protrude perpendicularly from the surface of the base plate 41, so that the lock member 42, the stopper member 44 and the swinging body 46 are rotatable along the surface of the base plate 41. The link mechanism 50 has one end rotatably attached to the stopper member 44 and the other end rotatably attached to the swinging body 46, and operatively connects the stopper member 44 and the swinging body 46.

[0025] The locking member 42 has a receiving recess 42a. The receiving recess 42a is a notched recess that is open at the tip side. The receiving recess 42a is formed to a size that can receive the locked portion 60a. The receiving recess 42a is a recess that is long in the depth direction, with the depth being longer than the width.

[0026] The locking member 42 has a rotation range restricted by contact with a stopper 53 and a stopper member 44 on the base plate 41, and is rotatable (swingable) between a first angular position and a second angular position, i.e., is capable of changing between a first state and a second state. The locking member 42 is elastically biased by a spring 43 so as to change from the first state to the second state (in the direction of the arrow in the figure).

[0027] The first state is a state (locked state) in which the receiving recess 42a is perpendicular to the opening and closing operation direction of the landing door 23 (opening operation direction and closing operation direction; in FIG. 5, the rightward direction on the paper is the opening operation direction, and the leftward direction is the closing operation direction, and so on below) (the center line of the receiving recess 42a and the opening and closing operation direction of the landing door 23 are perpendicular to each other). As a result, the receiving recess 42a and the locked portion 60a engage with each other in the opening operation direction of the landing door 23.

[0028] The second state is a state (unlocked state) in which the receiving recess 42a is inclined with respect to the opening and closing movement direction of the landing door 23 (the center line of the receiving recess 42a and the opening and closing movement direction of the landing door 23 are inclined), thereby enabling the receiving recess 42a and the locked portion 60a to be engaged and disengaged in the opening movement direction of the landing door 23.

[0029] The stopper member 44 comes into contact with a stopper 54 on the base plate 41, thereby restricting the rotation range and allowing it to rotate (swing) between a first angular position and a second angular position, i.e., allowing it to change between a first state and a second state. The stopper member 44 is elastically biased by a spring 45 so as to change from the second state to the first state (in the direction of the arrow in the figure).

[0030] The first state is a state (restricted state) in which the locking member 42 is engaged to restrict the state of the locking member 42 from changing from the first state to the second state, and the locking member 42 is maintained in the first state.

[0031] The second state is a state (restriction release state) in which the lock member 42 is released from the restriction and the lock member 42 can be changed from the first state to the second state.

[0032] The stopper member 44 includes an input portion 44a. The input portion 44a is an end portion of the stopper member 44, and is a portion for inputting a trigger for changing the state of the stopper member 44 from the first state to the second state against the elastic bias.

[0033] The rotation range of the oscillating body 46 is restricted by contact with a stopper 55 on the base plate 41, and the oscillating body 46 is rotatable (oscillates) between a first angular position and a second angular position, i.e., the oscillating body 46 is capable of changing between a first state and a second state. The oscillating body 46 is elastically biased by a spring 49 so as to change from the second state to the first state (in the direction of the arrow in the figure).

[0034] The first state corresponds to the first state of the stopper member 44. The second state corresponds to the second state of the stopper member 44.

[0035] The oscillator 46 includes a first roller 47 on a support shaft 41d which is the center of rotation of the oscillator 46, and includes a second roller 48 at a position away from the support shaft 41d.

[0036] The link mechanism 50 is a two-section link consisting of two links, a first link 51 and a second link 52. One end of the first link 51 is rotatably attached to the input portion 44a of the stopper member 44, one end of the second link 52 is rotatably attached to the other end of the first link 51, and the other end of the second link 52 is rotatably attached to the swinging body 46. The number of links does not have to be two, and may be three or four or more.

[0037] As a result, when the rocking body 46 changes from the first state to the second state against the elastic force, the stopper member 44 also changes from the first state to the second state against the elastic force, and on the other hand, when the rocking body 46 changes from the second state to the first state due to the elastic force, the stopper member 44 also changes from the second state to the first state due to the elastic force. Moreover, since the link mechanism 50 is a link made up of a plurality of links, even if there is a difference in the amount of state change between the rocking body 46 and the stopper member 44, the rocking body 46 and the stopper member 44 do not hinder the state change of the other.

[0038] The first roller 47 and the second roller 48 of the swinging body 46 are portions that are engaged with the landing door engaging device 7 provided on the car door 30 of the car 3 of the elevator 1. As shown in FIG. 6, the landing door engaging device 7 is called a movable cam and includes a pair of cams (a first cam 70 and a second cam 71). The cams 70 and 71 are long in the vertical direction and have tapered shapes with the widths of the upper and lower ends expanding. The cams 70 and 71 can be changed between a first state in which the interval (width) between them is wide and a second state in which the interval (width) is narrow. More specifically, the first cam 70 is fixed, and the second cam 71 can be moved in parallel by a pair of parallel links 72 so as to approach and move away from the first cam 70. In addition, the tip of the swinging body 73 is rotatably attached to the second cam 71. The rocking body 73 is equipped with a roller 74, and when the car door 30 is in a fully closed state, the roller 74 comes into contact with a bracket 75 attached to the car body side, thereby maintaining the cams 70, 71 in the first state. On the other hand, when the car door 30 starts to open and the roller 74 moves away from the bracket 75, the second cam 71 moves downward by its own weight, and the cams 70, 71 change to the second state. Then, when the car door 30 starts to open and enters the second state, the first cam 70 comes into contact with and engages with the second roller 48 of the rocking body 46, causing the rocking body 46 to change from the first state to the second state against the elastic force.

[0039] In this way, the car door 30 has an engaging portion (first cam 70) protruding towards the landing door 23, and the landing door 23 has an engaged portion (second roller 48) protruding towards the car door 30, and when the car 3 arrives at the landing 20 and the car door 30 begins its opening operation, the engaging portion and the engaged portion engage with each other, the car door 30 and the landing door 23 are operatively connected, and the landing door 23 is driven to begin its opening operation.

[0040] Returning to FIG. 5, the landing door lock device 4 includes an operation piece 58 as a configuration on the landing door 23 side, and a switch 61 as a configuration on the landing entrance / exit 21A side. The operation piece 58 is provided on the same landing door 23 (the door hanger 230 or the upper part of the landing door 23) as the landing door 23 on which the locking member 42 is provided. More specifically, the operation piece 58 is attached to the locking member 42. The operation piece 58 is attached to the locking member 42 so that a tip side of the operation piece 58 protrudes from the outline of the locking member 42 and so that a center line of the operation piece 58 is aligned along the horizontal direction (the closing operation direction of the landing door 23) when the locking member 42 is in the first state. The switch 61 is attached to the inner wall surface 2A of the hoistway 2 around the landing entrance / exit 21A (directly or indirectly via a bracket or the like to the base plate 25 of the door support structure 24, the door rail 26, or the inner wall surface 2A of the hoistway 2). More specifically, the switch 61 is disposed in the vicinity of the locked member 60 .

[0041] As shown in Fig. 7, the switch 61 is in the form of an interlock switch and includes a pair of terminals (a first terminal 62 and a second terminal 63, also referred to as contacts). The switch 61 is provided such that the terminals 62, 63 are along a plane (vertical plane) intersecting with the closing direction of the landing door 23. The terminals 62, 63 are made of a strip-shaped metal material, and are therefore arranged such that the plate surface is vertical (the area of ​​the surface as viewed from the horizontal direction is larger than the area of ​​the surface as viewed from the vertical direction) by being along the vertical plane. The terminals 62, 63 are made of a strip-shaped metal material, and thus have elasticity and flexibility and spring back.

[0042] The switch 61 is turned on when a conductor (contact) 59 arranged along a vertical plane at the tip of the operating piece 58 comes into contact with the terminals 62, 63 and acts in a pressed state. The switches 61 of the landing door lock devices 4 of each floor are connected by a single wire and constitute a safety circuit of the drive device of the elevator 1. When all the switches 61,... are conductive and current is flowing through the safety circuit, the control unit of the elevator 1 determines that the landing doors 23,... of all floors are in a fully closed state. On the other hand, when the current of the safety circuit is cut off, the control unit of the elevator 1 determines that any of the switches 61 is not conductive and that any of the landing doors 23 of any floors are not in a fully closed state, cuts off the power supply to the elevator 1, and disables the drive device of the elevator 1.

[0043] The tip of operation piece 58 is configured with a curved surface that is convex in the center for reasons described below. Conductor 59 is also formed into a curved surface in accordance with this, and is embedded in the tip of operation piece 58 or attached to the tip surface. Conductor 59 may be in the form of a strip having a width, or may be in the form of a surface that extends two-dimensionally.

[0044] In addition, the terminals 62, 63 may be arranged in any one of the following forms: vertically arranged as shown in Figures 7(a) and (b), horizontally arranged as shown in Figure 7(c), or diagonally arranged.

[0045] The configuration of the elevator 1 equipped with the landing door lock device 4 according to this embodiment is as described above. Next, the operation of the landing door lock device 4 will be described.

[0046] 8(a) shows the first state (locked state) of the locking member 42. That is, in a state in which the landing door 23 is fully closed, the locking member 42, which receives the locked portion 60a in the receiving recess 42a, is engaged with the stopper member 44 and maintained in the first state (locked state). At this time, the receiving recess 42a is orthogonal to the opening operation direction of the landing door 23 (the right direction on the paper in FIG. 8), so that the receiving recess 42a restrains the locked portion 60a, and the receiving recess 42a and the locked portion 60a engage with each other in the opening operation direction of the landing door 23. Therefore, in the first state (locked state) of the locking member 42, the relative displacement between the locking member 42 and the locked portion 60a in the opening operation direction of the landing door 23 is restricted, and the landing door 23 is fixed (locked) to the landing entrance 21A in the fully closed state.

[0047] 8(b) to (d) show the second state (unlocked state) of the locking member 42. That is, in a state in which the landing door 23 is fully closed, a trigger (an external force that changes the state of the stopper member 44 from the first state to the second state against the elastic bias, specifically, a force that causes the first cam 70 of the landing door engagement device 7 of the car door 30 to come into contact with and engage with the second roller 48 of the swinging body 46 as the car door 30 opens, and changes the state of the swinging body 46 from the first state to the second state against the elastic bias) is input to the stopper member 44, whereby the locking member 42 that receives the locked portion 60a in the receiving recess 42a is released from the engagement by the stopper member 44. At this time, the receiving recess 42a is inclined with respect to the opening operation direction of the landing door 23, so that the restraint of the locked portion 60a by the receiving recess 42a is released, and the receiving recess 42a and the locked portion 60a can be engaged and disengaged in the opening operation direction of the landing door 23. Therefore, in the second state (unlocked state) of the locking member 42, relative displacement between the locking member 42 and the locked portion 60a is permitted in the opening operation direction of the landing door 23, the fixation of the landing door 23 is released, and the landing door 23 starts its opening operation in conjunction with the opening operation of the car door 30.

[0048] On the other hand, when the landing door 23 in the fully open state is closed in association with the closing operation of the car door 30, as shown in Fig. 9(a) to (c), the locking member 42 comes into contact with the locked portion 60a, receives a reaction force of the force for closing the landing door 23 from the locked portion 60a, and changes state from the second state (unlocked state) to the first state (locked state) against the elastic bias, and returns to the first state (locked state). Then, the car door 30 is in the fully closed state, and the cams 70 and 71 of the landing door engagement device 7 of the car door 30 release the swinging body 46, so that the stopper member 44 returns from the second state to the first state where it engages the locking member 42 by the elastic bias. As a result, the locking member 42 is maintained in the first state (locked state) again (Fig. 9(d)).

[0049] In addition, in the process in which the landing door 23 is brought into a fully closed state by the closing operation, the operating piece 58 comes into contact with and acts in a pressing state against the terminals 62, 63 of the switch 61 due to the translational motion X accompanying the closing operation of the landing door 23 (while performing the rotational motion A accompanying the rotation of the lock member 42 accompanying the closing operation of the landing door 23), as shown in FIG. 10 .

[0050] As described above, the tip of operation piece 58 is curved so that the tip of operation piece 58 smoothly contacts terminals 62, 63 of switch 61 even when rotational motion A is applied thereto.

[0051] As described above, the landing door lock device 4 according to the present embodiment includes a door-closed detection unit that detects that the landing door 23 is in a fully-closed state, and is configured with the switch 61 and the operation piece 58. The switch 61 is provided such that the terminals 62, 63 are aligned along a plane intersecting with the closing direction of the landing door 23, and the operation piece 58 is provided such that it comes into contact with and acts on the terminals 62, 63 of the switch 61 by the translational motion X accompanying the closing operation of the landing door 23. This makes it difficult for foreign matter such as dust to accumulate on the terminals 62, 63 of the switch 61. Therefore, the landing door lock device 4 according to the present embodiment can suitably prevent the door-closed detection unit from malfunctioning due to foreign matter such as dust.

[0052] Moreover, the landing door locking device 4 according to the present embodiment includes a locking mechanism unit that is composed of the locking member 42, the stopper member 44, and the locked portion 60a, and the locking member 42 does not change state from the first state (locked state) to the second state (unlocked state) unless the stopper member 44 releases the locking member 42. Moreover, the stopper member 44 is elastically biased so as to maintain the first state in which the locking member 42 is locked. As a result, even if an external force such as an impact is applied to the landing door locking device 4, the locked state is not inadvertently released. Therefore, the landing door locking device 4 according to the present embodiment can suitably prevent the door closing detection unit from being unintentionally turned off instantaneously due to an external force such as an impact. In contrast, in the above-mentioned conventional landing door lock device, there is a risk of an incident in which the lock member 42' is lifted up due to an external force such as an impact, in which case the switch 61' is unintentionally turned OFF instantaneously, the safety circuit is activated, the power supply to the elevator is cut off, the elevator is brought to an emergency stop, and if there is a passenger in the car 3, the passenger may be trapped in the car 3. The landing door lock device 4 according to this embodiment can suitably prevent the occurrence of such an incident.

[0053] Moreover, according to the landing door lock device 4 of this embodiment, the operation piece 58 makes a rotational motion A associated with the rotation of the lock member 42 associated with the closing operation of the landing door 23, while making contact with the terminals 62, 63 of the switch 61 and acts in a pressing state due to a translational motion X associated with the closing operation of the landing door 23. As a result, the terminals 62, 63 and the conductor 59 at the tip of the operation piece 58 make sliding contact with each other. Therefore, according to the landing door lock device 4 of this embodiment, in addition to making it difficult for foreign matter such as dust to accumulate on the terminals 62, 63 in the first place, the attached foreign matter can be removed by a scraper action, and it is possible to more suitably prevent the door closing detection unit from malfunctioning due to foreign matter such as dust. In particular, it is more effective when the operation piece 58 makes a rotational motion A so as to approach the terminals 62, 63 from above, as in the landing door lock device 4 of this embodiment.

[0054] Moreover, the landing door lock device 4 according to the present embodiment includes an operation mechanism unit that is composed of the swinging body 46 and the link mechanism 50, and the stopper member 44 is operated by the opening and closing operation of the car door 30 via the operation mechanism unit. Therefore, the landing door lock device 4 according to the present embodiment does not require a drive device and can have a simple structure.

[0055] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention.

[0056] In the above embodiment, the operation piece 58 is attached to the locking member 42. However, the present invention is not limited to this. For example, as shown in FIG. 11, the operation piece 58 can be provided separately from the locking member 42. As an example, the operation piece 58 is attached to the base plate 41. In this case, the operation piece 58 performs only the translational movement X. Also, in this case, the lock mechanism does not have to be the one according to the above embodiment (which is composed of the locking member 42, the stopper member 44, and the locked portion 60a), but may be, for example, the one according to the above conventional landing door lock device (which is composed of the locking member 42' and the locked portion 60a').

[0057] In the above embodiment, the operation piece 58 is attached to the locking member 42. However, the present invention is not limited to this. The operation piece may be provided integrally with the locking member, that is, a part of the locking member may serve as the operation piece.

[0058] In the above embodiment, the operation mechanism for changing the state of the stopper member 44 from the first state to the second state is composed of the swinging body 46 and the link mechanism 50. However, the present invention is not limited to this. For example, as shown in FIG. 12, the operation mechanism may further include a release bracket 56. The release bracket 56 is attached to the swinging body 46 or the stopper member 44 (or may be a part of them), and the tip side is located near the opening hole 23a formed in (the upper part of) the landing door 23 so as to penetrate from the front to the back. When an unlocking key (not shown) with an L-shaped tip is inserted into the opening hole 23a from the landing 20 (the front of the landing door 23) and twisted clockwise, the tip of the unlocking key abuts against the unlocking bracket 56, and by further twisting, the state of the stopper member 44 together with the unlocking bracket 56 can be changed from the first state to the second state.

[0059] Alternatively, as shown in FIG. 13, the operation mechanism may further include a rotating shaft 57a and a link mechanism 57b. The rotating shaft 57a is located at the back of an opening hole 23a formed in (the upper part of) the landing door 23 so as to penetrate from the front to the back, and is provided so as to be rotatable from the landing 20 through the opening hole 23a. More specifically, a non-circular hole or protrusion (not shown), such as a square, hexagonal, plus-letter shape, minus-letter shape, or elliptical shape, is formed at the end of the rotating shaft 57a on the opening hole 23a side so as to be engageable with the tip of a tool in the axial direction, and is rotated by a tool inserted into the opening hole 23a from the landing 20. The link mechanism 57b is made of a plurality of links, such as a two-joint link or a three-joint link, and one end of the link mechanism 57b is fixed to the rotating shaft 57a, and the other end of the link mechanism 57b is rotatably attached to the swinging body 46 or the stopper member 44. In this case, the driving force of the stopper member 44 (the external force applied when the landing door 23 is opened) is the rotational force of the tool. [Explanation of symbols]

[0060] 1... elevator, 2... hoistway, 2A... inner wall surface, 20... landing, 21... jamb, 21A... opening (landing entrance / exit), 22... landing door device, 23... landing door, 23a... opening hole, 230... door hanger, 231... roller, 24... door support structure, 25... base plate, 26... door rail, 27... threshold, 3... car, 30... car door, 31... door opening / closing device, 4... landing door lock device, 40... device main body, 41... base plate (base), 41a... notch, 41b... support shaft, 41c... support shaft, 41d... support shaft, 42... lock member (lock mechanism part), 42a... receiving recess, 43... spring, 44... stopper member (lock mechanism part), 44a... input part, 45... spring, 46... swinging body (operation mechanism portion), 47...first roller, 48...second roller (engaged portion), 49...spring, 50...link mechanism (operation mechanism portion), 51...first link, 52...second link, 53-55...stopper, 56...release bracket, 57a...rotating shaft (operation mechanism portion), 57b...link mechanism (operation mechanism portion), 58...operating piece (door closing detection portion), 59...conductor, 60...locked member, 60a...locked portion (lock mechanism portion), 61...switch (door closing detection portion), 62...first terminal, 63...second terminal, 7...landing door engaging device, 70...first cam (engaging portion), 71...second cam, 72...parallel link, 73...oscillating body, 74...roller (engaged portion), 75...bracket (engaging portion), A...rotational motion, X...translational motion

Claims

1. An elevator landing door locking device for fixing the landing door in a fully closed state, the device comprising: a locked part and a switch of a door closing detection part as a configuration on the landing entrance / exit side; and a locking member that engages with the locked part in a fully closed state and an operating piece for a terminal of the switch as a configuration on the landing door side that opens and closes the landing entrance / exit by moving laterally, the locking member engaging with the locked part in a fully closed state and an operating piece for a terminal of the switch as a configuration on the landing door side that opens and closes the landing entrance / exit by moving laterally, The switch is provided so that the terminal is along a plane intersecting with the closing direction of the landing door, The operating piece is provided so as to come into contact with and act on a terminal of the switch by translational motion accompanying the closing operation of the landing door. Elevator landing door lock device.

2. the locking member is a member that includes a receiving recess capable of receiving the locked portion, and is provided so as to be changeable between a locked state in which the receiving recess and the locked portion are engaged with each other in the opening direction of the landing door, and an unlocked state in which the receiving recess and the locked portion are capable of being engaged with and disengaged from each other in the opening direction of the landing door, an input unit for inputting a trigger for changing the state of the locking member from a locked state to an unlocked state; and an operation mechanism unit that transmits, to the input unit, an external force applied when the landing door is opened as a trigger input operation to the input unit.

2. The elevator hall door lock device according to claim 1.

3. The locking member may be provided with a stopper member that is changeable between a restricted state in which the locking member is engaged with the locking member to restrict the locking member from changing from the locked state to the unlocked state, and a non-restricted state in which the stopper member is disengaged from the locking member to release the restriction. The input portion is provided on the stopper member, The operation mechanism is operatively connected to the stopper member and changes the state of the stopper member from a restricted state to a released state based on an external force applied during an opening operation of the landing door.

3. The elevator hall door lock device according to claim 2.

4. The operating piece is provided on the lock member.

3. The elevator hall door lock device according to claim 2.

5. The operating mechanism unit includes an engaged portion that is engaged with a landing door engaging device provided on a car door of the elevator car, and changes the state of the stopper member from a restricted state to a released state based on an external force applied from the car door via the engaged portion in association with an opening operation of the car door.

3. The elevator hall door lock device according to claim 2.

6. The lock member and the operating piece are provided on a base that is attached to the landing door.

2. The elevator hall door lock device according to claim 1.

7. The elevator hall door lock device according to any one of claims 1 to 6 is provided. Elevator.

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