Elevator landing door engaging device and elevator

Abstract

To provide an elevator landing door engaging device which has high operational reliability and can minimize the clearance between a landing door and an engaged portion.SOLUTION: An engaging portion (first cam 360) moves linearly in a direction perpendicular to the vertical plane of a car door 31 when viewed from the vertical direction. The approach of a landing door 23 to an engaged portion (roller 274) is performed by linear motion in a direction perpendicular to the vertical plane of the car door 31 when viewed from the vertical direction. Operation is performed using mechanical mechanisms of the engaging portion (first cam 360) and an operating portion (operating member 366).SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to an elevator landing door engaging device that is provided in a car door device and engages with an engaged portion of a landing door when the car door is opened, thereby opening the landing door in conjunction with the opening operation of the car door, and to an elevator. [Background technology]

[0002] One form of landing door engagement device is known in which a pair of vertically long cams (movable cams, engagement portions) spaced apart on the left and right by a predetermined distance are provided at positions protruding from the car door toward the landing door, and engage with rollers (engaged portions) of a door lock device of the landing door to transmit a driving force for an opening operation to the landing door.

[0003] In this type of landing door engagement device, the movable cam is spaced apart widely to ensure sufficient clearance so that it does not come into contact with the roller of the door lock device of the landing door when the car passes through a passing floor. However, if the movable cam is displaced to a position where it interferes with the roller of the door lock device of the landing door or other landing equipment due to, for example, an unbalanced load causing the car to tilt or an impact on the car door causing the car door to deform, the movable cam will interfere with these equipment while the car is traveling, causing damage to the equipment.

[0004] In order to solve this problem, a landing door engagement device has been proposed that retracts the mobile cam to the car side when the car is traveling and advances it to the landing door side when activated. For example, the landing door engagement device described in Patent Document 1 uses a solenoid to retract the mobile cam, while the landing door engagement devices described in Patent Documents 2 to 4 use a mechanical mechanism to retract the mobile cam. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2007-182314 A [Patent Document 2] JP 2000-118923 A [Patent Document 3] Japanese Patent Application Publication No. 1-267289 [Patent Document 4] Japanese Utility Model Application Publication No. 7-028170 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the landing door engagement device described in Patent Document 1 uses a solenoid, which is an electric element, and so there is a concern that an electrical malfunction may occur, and it cannot be said that the reliability of operation is necessarily high. Also, in the landing door engagement devices described in Patent Documents 2 to 4, the movable cam approaches the roller of the door lock device of the landing door from a horizontal direction by a rotational motion around a vertical axis, so it is necessary to provide a certain amount of clearance so that the movable cam does not come into contact with the roller when advancing, and the adjustment work is complicated.

[0007] Therefore, the present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide an elevator landing door engagement device and an elevator which have high operational reliability and can minimize the clearance between the landing door and the engaged portion. [Means for solving the problem]

[0008] The elevator landing door engagement device according to the present invention comprises: 1. An elevator landing door engaging device that is provided in a car door device and engages with an engaged portion of a landing door when the car door is opened, thereby opening the landing door in association with the opening operation of the car door, an engaging portion that moves linearly in a direction perpendicular to a vertical plane of the car door as viewed from the vertical direction, and is provided so as to be movable between a retreated position where the engaging portion is separated from the landing door and cannot be engaged with the engaging portion, and an advanced position where the engaging portion is close to the landing door and can be engaged with the engaging portion; and an operating unit which changes from a first state to a second state when a portion that has been in contact with the contact portion in a fully closed state of the car door separates from the contact portion as the car door is opened, and thereby releases the restraint caused by the contact, and which applies a force directly to the engaging portion or indirectly via a link mechanism to the engaging portion in response to the change from the first state to the second state, thereby moving the engaging portion from the retracted position to the advanced position. An elevator hall door engagement device.

[0009] Here, as one aspect of the elevator landing door engagement device according to the present invention, the car door includes a connector for connecting the car door to a movable body of the door opening and closing device; The operating unit is provided directly on the connector or indirectly via a bracket. The above configuration can be adopted.

[0010] Also, in this case, When the car door is a center-opening type, the abutment portion is provided directly on the connector of the other car door or indirectly via a bracket. The above configuration can be adopted.

[0011] In another aspect of the elevator landing door engagement device according to the present invention, The connecting member is configured so that the entire car door can move within a predetermined range in the opening and closing operation direction of the car door. The above configuration can be adopted.

[0012] In addition, as another aspect of the elevator landing door engagement device according to the present invention, The engaging portion is a link on the landing door side of the parallel link mechanism that is provided vertically along a vertical plane that is parallel to and perpendicular to the vertical plane of the car door, and moves from the retracted position to the advanced position in an obliquely upward direction as the parallel link mechanism changes state, The operating portion applies an upward force to the engaging portion directly or indirectly via a parallel link mechanism to move the engaging portion from the retracted position to the advanced position. The above configuration can be adopted.

[0013] Also, in this case, The operating unit includes an input unit that moves in contact with and away from the contact unit, and an output unit that applies an upward force to the engaging unit directly or indirectly via a parallel link mechanism, and is provided so as to be rotatable between a first state and a second state, and is elastically biased so as to change from the first state to the second state. 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 engagement devices described above. It's an elevator. Effect of the Invention

[0015] According to the present invention, the door is configured using a mechanical mechanism that is free from the concern of electrical malfunctions. Therefore, according to the present invention, high operational reliability can be obtained. Furthermore, according to the present invention, the approach of the landing door to the engaged portion is performed by a rectilinear motion in a direction perpendicular to the vertical plane of the car door when viewed from the vertical direction. Therefore, according to the present invention, the clearance between the landing door and the engaged portion can be made as small as possible, and thus the follow-up ability of the landing door relative to the car door during the opening operation of the car door and the landing door can be improved (elimination of a delay in the start timing of the opening operation of the landing door relative to the start timing of the opening operation of the car door). [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view of an elevator. [Diagram 2] Fig. 2(a) is a front view of the car with the car door fully closed as viewed from the landing side, and Fig. 2(b) is a front view of the car with the car door fully open. [Diagram 3] FIG. 3 is a partial cross-sectional side view of the car door device and the landing door device. [Figure 4]Fig. 4(a) is a front view of the door lock device in a locked state as seen from inside the elevator shaft, and Fig. 4(b) is a front view of the door lock device in an unlocked state. [Diagram 5] Fig. 5(a) is a front view of the landing door engagement device according to the first embodiment, in which the car door is in a fully closed state and the landing door engagement device is in an inoperative state, as viewed from the landing side. Fig. 5(b) is a front view of the landing door engagement device in an operative state and the car door has started an opening operation. [Figure 6] Fig. 6(a) is a partial cross-sectional side view of the landing door engagement device according to the first embodiment, in a non-operated state, and Fig. 6(b) is a partial cross-sectional side view of the landing door engagement device in an operated state. [Figure 7] Fig. 7(a) is a perspective view of a schematic configuration of the landing door engagement device according to the first embodiment, in which Fig. 7(b) is a perspective view of a schematic configuration of the landing door engagement device in an actuated state. [Figure 8] FIG. 8 is an explanatory diagram of the operation of the landing door engagement device according to the first embodiment. [Figure 9] Fig. 9(a) is a front view of the landing door engagement device according to the second embodiment, in which the car door is in a fully closed state and the landing door engagement device is in an inoperative state, as viewed from the landing side. Fig. 9(b) is a front view of the landing door engagement device in an operative state, as the car door starts an opening operation. [Figure 10] Fig. 10(a) is a schematic diagram of a first example of a sliding structure for a bracket of a landing door engagement device according to a second embodiment, and Fig. 10(b) is a schematic diagram of a second example of a sliding structure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0018] As shown in Fig. 1, 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 device 30. The car door device 30 is equipped with a car door 31, a door support structure 32, and a door opening and closing device 35. The car door 31 moves in the left-right direction (horizontal direction from left to right, the same applies below) 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 door support structure 32 is a structure that supports the car door 31 while enabling the car door 31 to be opened and closed. The door opening and closing device 35 is a device for opening and closing the car door 31.

[0020] In contrast, 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 of a size corresponding to the opening of the car 3. The landing door device 22 includes a landing door 23 and a door support structure 24. The landing door 23 moves in the left-right direction to open and close an opening (landing entrance / exit) in the three-sided frame 21 to allow passengers to get on and off. 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 31 of the car 3 stopped on the floor, and is closed by the elastic force accompanying the closing operation of the car door 31. The door support structure 24 is a structure that supports the landing door 23 while enabling the opening and closing operation of the landing door 23.

[0021] As shown in Figs. 2 and 3, the car door 31 includes a door panel 310, a door hanger 311, and a connector 313. The door panel 310 is arranged along a vertical plane, and is the main body of the car door 31 that opens and closes the opening 3a of the car 3. The door hanger 311 is attached integrally to the upper end of the door panel 310. The door hanger 311 includes a pair of rollers 312, 312. The pair of rollers 312, 312 are arranged at the upper end of the door hanger 311 with a gap in the left-right direction. The connector 313 is attached to the upper end of the door hanger 311, between the pair of rollers 312, 312. The connector 313 is a device that connects the car door 31 (the door hanger 311) to a drive belt 354 (described later) of the door opening and closing device 35.

[0022] The door support structure 32 includes a door rail 33 and a threshold 34. The door rail 33 is formed in a belt shape and is provided in the left-right direction on the upper front surface of the car 3. The rollers 312, 312 of the door hanger 311 are placed on the upper edge of the door rail 33, so that the car door 31 is hung from the door rail 33 in a state in which it can slide in the left-right direction along the door rail 33. The door rail 33 is a structure that supports an upper portion of the car door 31 while allowing the car door 31 to be opened and closed. On the other hand, the threshold 34 is provided in the left-right direction on the lower front surface of the car 3 along the lower edge of the opening 3a of the car 3 and such that both ends are wider in the left-right direction than the lower edge of the opening 3a. The threshold 34 is a structure that supports a lower portion of the car door 31 while allowing the car door 31 to be opened and closed.

[0023] The landing door 23 and the door support structure 24 have the same structure as the car door 31 and the door support structure 32.

[0024] The door opening / closing device 35 includes a drive motor 350, a reduction pulley 351, a pair of pulleys 352, 352, a reduction belt 353, and a drive belt 354. The drive motor 350 is provided at the front of the upper surface of the car 3. The reduction pulley 351 is provided at one end, either the left or right end, of the upper front surface of the car 3. One pulley 352 is provided coaxially and integrally with the reduction pulley 351. The other pulley 352 is provided at the other end, either the left or right end, of the upper front surface of the car 3. The reduction belt 353 is an endless belt wound around the drive shaft of the drive motor 350 and the reduction pulley 351. The drive belt 354 is an endless belt wound around the pair of pulleys 352, 352. The drive belt 354 is provided in the left-right direction and parallel to the door rail 33.

[0025] When the drive motor 350 is driven, the rotation is transmitted to the speed reducing pulley 351 via the speed reducing belt 353, and the speed reducing pulley 351 and the pulley 352 rotate, and the drive belt 354 moves in a circular manner accordingly. As a result, the two car doors 31, 31 on the left and right reciprocate along the door rail 33 to open and close. One car door 31 is connected to one side of the drive belt 354 by a connector 313, and the other car door 31 is connected to the other side of the drive belt 354 by a connector 313. As a result, the pair of car doors 31, 31 move in directions opposite to each other. That is, the car door device 30 and the landing door device 22 are of a center open type in which the opening 3a of the car 3 opens from the center. The drive belt 354 is one form of a moving body of the present invention.

[0026] The car door device 30 includes a landing door engaging device 36. The landing door engaging device 36 is a device that engages with an engaged portion of the landing door 23 when the car door 31 performs an opening operation, thereby opening the landing door 23 in conjunction with the opening operation of the car door 31. The details of the landing door engaging device 36 will be described later.

[0027] 4, the landing door device 22 includes a door lock device 27. The door lock device 27 includes, as components on the landing entrance / exit side, a locked portion 270a of a locked member 270 and a switch 271 of a door closing detection unit, and includes, as components on the landing door 23 side, a lock member 272 and a conductor portion 273.

[0028] The locked member 270 and the switch 271 are attached directly or indirectly via a bracket or the like to the inner wall surface 2A of the elevator shaft 2 around the landing entrance. The locking member 272 is attached to the door hanger 231 so as to be swingable, and when the landing door 23 is in a fully closed state, the tip portion swings vertically downward and engages with the locked portion 270a (locked state). The conductor portion 273 is attached to the tip portion of the locking member 272, and when the locking member 272 is in a locked state, the conductor portion 273 comes into contact with and acts on a pair of terminals (not shown) of the switch 271, turning the switch 271 ON (or OFF). The control portion of the elevator 1 determines that the landing door 23 is in a fully closed state based on the ON signal (or OFF signal) of the switch 271.

[0029] On the other hand, when the landing door engaging device 36 of the car door device 30 engages with the roller 274 on the locking member 272 in conjunction with the opening operation of the car door 31, the tip of the locking member 272 swings upward vertically, and releases the engagement with the locked portion 270a (unlocked state). When the locking member 272 enters the unlocked state, the conductor portion 273 separates from the pair of terminals of the switch 271, turning the switch 271 OFF (or ON). The control unit of the elevator 1 determines that the landing door 23 is not in a fully closed state based on the OFF signal (or ON signal) of the switch 271. The roller 274 is one form of the engaged portion of the present invention.

[0030] <First embodiment of the landing door engagement device 36> 5 to 7, the landing door engagement device 36 includes a first cam 360, a second cam 361, and an operating member 366. The first cam 360 is one form of the engagement portion of the present invention, and the operating member 366 is one form of the operating portion of the present invention.

[0031] The first cam 360 and the second cam 361 are configured to be capable of translating in a direction perpendicular to the vertical plane of the car door 31 when viewed from the vertical direction (front-rear direction relative to the above-mentioned left-right direction (front-rear horizontal direction, the same applies below)). The first cam 360 and the second cam 361 are provided to be movable between a retracted position (FIGS. 5(a), 6(a), 7(a)) where they are separated from the landing door 23 and cannot engage with the roller 274 of the door lock device 27 of the landing door 23 in the left-right direction, and an advanced position (FIGS. 5(b), 6(b), 7(b)) where they approach the landing door 23 and can engage with the roller 274.

[0032] The first cam 360 and the second cam 361 constitute one link of a parallel crank mechanism or a parallel link mechanism 363. The mechanism 363 is provided vertically long along a vertical plane that is parallel to and perpendicular to the vertical plane of the car door 31. The first cam 360 and the second cam 361 swing between a first state in which a pair of parallel links connected to the first cam 360 and the second cam 361 of the mechanism 363 are inclined obliquely and a second state in which the inclination is smaller (for example, horizontal), and the mechanism 363 changes state, thereby switching between a retracted position and an advanced position. The first cam 360 and the second cam 361 are in the retracted position by their own weight when the landing door engagement device 36 is not in operation, and move from the retracted position to the advanced position in a diagonally upward direction when the landing door engagement device 36 is in operation.

[0033] The mechanism 363 of the first cam 360 and the mechanism 363 of the second cam 361 are connected by a connecting bar 364. Of the mechanism 363, a link parallel to the first cam 360 and the second cam 361 is attached to a base 362, and the base 362 is attached to a door hanger 311 of the car door 31.

[0034] The operating member 366 has a portion extending in one direction from the center of rotation and a portion extending in the other direction, and has a generally L-shaped configuration. The portion extending in one direction has an input portion 366a, and the portion extending in the other direction has an output portion 366b. As an example, the input portion 366a is the tip of the portion extending in one direction, and the output portion 366b is the tip of the portion extending in the other direction.

[0035] The operating member 366 is configured to be capable of rotational movement about an axis perpendicular to the vertical plane of the car door 31. The operating member 366 is provided to be rotatable between a first state (FIGS. 5(a), 6(a), and 7(a)) in which the input member 366a stands up (becomes vertical, for example) and the inclination of the output member 366b decreases, causing the height position of the output member 366b to decrease (becomes horizontal, for example), and a second state (FIGS. 5(b), 6(b), and 7(b)) in which the input member 366a inclines obliquely and the output member 366b inclines obliquely, causing the height position of the output member 366b to increase.

[0036] The operating member 366 is rotatably attached to a bracket 365. The bracket 365 is plate-shaped, and is attached to the connector 313 of one of the car doors 31. The bracket 365 is disposed vertically along the vertical plane of the car door 31 (and the landing door 23). The operating member 366 is elastically biased by a tension spring 367 (elastic material) so as to change from a first state to a second state.

[0037] The first state is a state in which the operating member 366 rotates counterclockwise against the elastic force, and the input portion 366a abuts against the abutment portion 401 when the car door 31 is fully closed. The second state is a state in which the operating member 366 rotates clockwise due to the elastic force, and abuts against a stopper 368 on the bracket 365. The abutment portion 401 is attached to a bracket 400. The bracket 400 is plate-shaped, and is attached to the connector 313 of the other car door 31. The bracket 400 is disposed vertically along the vertical plane of the car door 31 (and the landing door 23).

[0038] The output portion 366b of the operating member 366 engages from below with the upper link of the upper and lower parallel links of the mechanism 363. Therefore, when the operating member 366 changes from the first state to the second state and the height position of the output portion 366b rises, the upper and lower parallel links are lifted and change from the first state to the second state, and the first cam 360 and the second cam 361 move from the retracted position to the advanced position.

[0039] In this way, the operating member 366 changes from the first state to the second state when the portion of the operating member 366 that was in contact with the abutment portion 401 when the car door 31 was in the fully closed state moves away from the abutment portion 401 as the car door 31 is opened, and the constraint caused by the abutment is released. Also, by changing from the first state to the second state, an upward force is applied to the first cam 360 and the second cam 361 via the mechanism 363, thereby moving the first cam 360 and the second cam 361 from the retracted position to the advanced position, and the landing door engagement device 36 is put into an activated state.

[0040] In addition, the operating member 366 is a means for changing its state from the second state to the first state by abutting against the abutment portion 401 when the car door 31 is in the fully closed state, and for eliminating the upward force acting on the first cam 360 and the second cam 361 by changing its state from the second state to the first state, thereby returning the first cam 360 and the second cam 361 to their retracted positions and deactivating the landing door engagement device 36.

[0041] As shown in FIG. 5, the door hanger 311 of the car door 31 includes a recess 311a. The recess 311a is a recess recessed downward from the upper edge of the door hanger 311. As an example, the recess 311a is rectangular having left and right side edges. The width of the recess 311a in the left-right direction is somewhat larger than the width of the connector 313. Therefore, a predetermined gap is formed in the left-right direction when the lower end of the connector 313 is placed in the recess 311a. A slide bar 311b is provided in the left-right direction in the recess 311a. The slide bar 311b penetrates the lower end of the connector 313. As a result, the connector 313 is configured to be slidable in the left-right direction relative to the door hanger 311, that is, in the opening and closing operation direction of the car door 31, within a range in which the right edge abuts against the right edge of the recess 311a and the left edge abuts against the left edge of the recess 311a in the entire car door 31. As an example, the slide length is 30 to 100 mm.

[0042] The above is the configuration of the elevator 1 including the landing door engagement device 36 according to embodiment 1. Next, the operation of the landing door engagement device 36 will be described.

[0043] 8(a1) and 8(a2), in a state in which the left and right car doors 31, 31 are fully closed, the operating member 366 abuts against the abutment portion 401 and is in the first state. Therefore, the first cam 360 and the second cam 361 move to a retracted position where they cannot engage with the roller 274 of the door lock device 27 of the landing door 23 in the opening / closing operation direction of the car door 31 and the landing door 23. In this inoperative state of the landing door engagement device 36, the car 3 is allowed to travel.

[0044] Next, when the car 3 lands on any floor, the door opening / closing device 35 is driven, the drive belt 354 moves cyclically in one direction, and the opening operation of the car door 31 begins. However, as shown in Fig. 8 (b1) and (b2), within a predetermined range after the drive belt 354 starts to move cyclically, first, only the connector 313 moves (slides) in the opening operation direction, and the door panel 310 and the door hanger 311 do not move and remain in the fully closed position. At this time, the operating member 366 moves away from the abutment portion 401 and is released from the restraint caused by the abutment, and the state changes from the first state to the second state. Then, when the operating member 366 changes from the first state to the second state, the first cam 360 and the second cam 361 move from the retreated position to the advanced position by rectilinear motion S in a direction perpendicular to the vertical plane of the car door 31 (and the landing door 23).

[0045] 8(c1) and 8(c2), when the drive belt 354 continues to circulate in this operating state of the landing door engagement device 36, the entire car door 31 starts its opening operation with the connector 313 abuttingly engaged with the door hanger 311. Then, almost simultaneously with the opening operation of the entire car door 31, the first cam 360 engages with the roller 274 of the door lock device 27 of the landing door 23, and the landing door 23 starts its opening operation.

[0046] When the car door 31 and the landing door 23 change from a fully open state to a fully closed state, the elements of the landing door engagement device 36 operate in the reverse order to that described above.

[0047] As described above, the landing door engagement device 36 according to the first embodiment is configured using a mechanical mechanism that is free from the risk of electrical malfunction. Therefore, the landing door engagement device 36 according to the first embodiment can achieve high operational reliability.

[0048] Moreover, according to the landing door engagement device 36 of the first embodiment, the approach of the door lock device 27 of the landing door 23 to the roller 274 is performed by a rectilinear motion in a direction perpendicular to the vertical plane of the car door 31 when viewed from the vertical direction. For this reason, according to the landing door engagement device 36 of the first embodiment, it is possible to make the clearance with respect to the roller 274 (clearance C in FIG. 8(b2)) as small as possible, and thus it is possible to enhance the followability of the landing door 23 with respect to the car door 31 during the opening operation of the car door 31 and the landing door 23 (elimination of a delay in the start timing of the opening operation of the landing door 23 with respect to the start timing of the opening operation of the car door 31).

[0049] Moreover, according to the landing door engagement device 36 of the first embodiment, the connecting body 313 is configured to be slidable within a predetermined range in the opening / closing operation direction of the car door 31 in the entire car door 31, and the operating member 366 is provided on the connecting body 313. As a result, after the landing door engagement device 36 is brought into an actuated state, the door panel 310, which is the main body of the car door 31 as a door, starts an opening operation. For this reason, according to the landing door engagement device 36 of the first embodiment, coupled with the fact that the first cam 360 and the second cam 361 are of the rectilinear motion type, it is possible to further improve the follow-up ability of the landing door 23 with respect to the car door 31 during the opening operation of the car door 31 and the landing door 23 (elimination of a delay in the start timing of the opening operation of the landing door 23 with respect to the start timing of the opening operation of the car door 31).

[0050] <Second embodiment of the landing door engagement device 36> Next, a description will be given of the landing door engagement device 36 according to the embodiment 2. In the following, differences from the landing door engagement device 36 according to the embodiment 1 will be described, and descriptions of the same points will be omitted since they are the same as the descriptions of the landing door engagement device 36 according to the embodiment 1.

[0051] The difference lies in the movable structure of connector 313. As shown in Fig. 9, connector 313 has a lower end rotatably attached to the periphery of the lower edge of recess 311a of door hanger 311, has protrusion 313b above the lower end, and is configured to be swingable in the left-right direction relative to door hanger 311, i.e., in the opening / closing operation direction of car door 31 across the entire car door 31, within a range in which protrusion 313b abuts against the right edge of recess 311a and protrusion 313b abuts against the left edge of recess 311a.

[0052] As the movement mode of connecting body 313 has been changed from sliding to swinging, various changes have been made, such as: i) connecting body 313 is configured with link 313a that can rotate with respect to the attachment portion to drive belt 354; ii) link 313a and bracket 365,400 are rotatably connected; and iii) guide means are provided to bracket 365,400 to ensure that bracket 365,400 can move straight in the left-right direction.

[0053] As an example, the guide means includes a guide rail 402 and a guide shoe 403, as shown in Fig. 9 and Fig. 10(a). The guide rail 402 is provided in the left-right direction on the upper front surface of the car 3. The guide rail 402 is disposed parallel to the drive belt 354 of the door opening and closing device 35. The guide shoe 403 is slidably supported by the guide rail 402, and is attached to the bracket 365, 400. This allows the bracket 365, 400 to move linearly in the left-right direction without rotating on a vertical plane.

[0054] 10(b), the guide means includes a slide guide 404. The slide guide 404 supports the bracket 365, 400 so that the bracket 365, 400 can slide freely, and is attached to the door hanger 311. This allows the bracket 365, 400 to move linearly in the left-right direction without rotating on the vertical plane.

[0055] These guide means are also applicable to the brackets 365, 400 of the first embodiment.

[0056] In this way, the landing door engagement device 36 according to the second embodiment also achieves the same effects as those achieved by the landing door engagement device 36 according to the first embodiment.

[0057] Moreover, according to the landing door engagement device 36 of the second embodiment, the connecting body 313 comes into contact with the door hanger 311 at a point (rotation axis). As a result, when the connecting body 313 swings, the door hanger 311 is not dragged along by frictional force. Therefore, according to the landing door engagement device 36 of the second embodiment, the door panel 310, which is the main body of the car door 31 as a door, can be reliably maintained in a fully closed state without being opened inadvertently until the swinging action of the connecting body 313 is completed and the landing door engagement device 36 is in an actuated state.

[0058] 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.

[0059] In the above embodiment, the door devices 30, 22 are center-open type (2CO) with one door each on the left and right. However, the present invention is not limited to this. It goes without saying that the present invention can also be applied to a side-open type (2S) door device with two doors, a center-open type (4CO) door device with two doors each on the left and right, and a side-open type (1S) door device with one door. In the case of a side-open type door device, the abutment part 401 is provided not on the car door 31 (movable part) but on the periphery (fixed part) of the opening 3a on the front surface of the car 3, directly or indirectly via a bracket or the like. Alternatively, even in the case of a center-open type, the abutment part 401 may be provided on the fixed part.

[0060] In the above embodiment, the output portion 366b of the operating member 366 engages with the upper link of the parallel crank mechanism 363 and applies an upward force. However, the present invention is not limited to this. The output portion 366b of the operating member 366 may be engaged with the first cam 360 and apply an upward force directly to the first cam 360 by providing an engaged portion on the first cam 360, for example.

[0061] In the above embodiment, a mechanism including a parallel crank mechanism or a parallel link mechanism 363 and an operating member 366 is used as the mechanical mechanism. However, the present invention is not limited to this. In short, it goes without saying that any type of mechanism may be used as long as it is a mechanical mechanism that opens the landing door in conjunction with the opening operation of the car door by engaging with an engaged portion of the landing door when the car door opens.

[0062] In the above embodiment, the first cam 360 and the second cam 361 are made to move in a linear motion to improve the tracking of the landing door 23 relative to the car door 31 when the car door 31 and the landing door 23 are opened, and in addition, a movable structure of the connector 313 is adopted to further improve the tracking. However, since the first-stage measure is sufficient to improve the tracking, it is not essential in the present invention to adopt a movable structure for the connector. In this regard, the connector may be fixed to a door hanger, as in the case of a conventional car door device. [Explanation of symbols]

[0063] 1... elevator, 2... hoistway, 2A... inner wall surface, 20... landing, 21... jamb, 22... landing door device, 23... landing door, 230... door panel, 231... door hanger, 232... roller, 24... door support structure, 25... door rail, 26... threshold, 27... door lock device, 270... locked member, 270a... locked portion, 271... switch, 272... lock member, 273... conductor portion, 274... roller (engaged portion), 3... cage, 3a... opening, 30... cage door device, 31... cage door, 310... door panel, 311... door hanger, 311a... recess, 311b... slide bar, 312... roller, 313... connector, 313a... link, 313b... protrusion, 32... door A support structure, 33...door rail, 34...sill, 35...door opening / closing device, 350...driving motor, 351...reduction pulley, 352...pulley, 353...reduction belt, 354...driving belt (moving body), 36...landing door engaging device, 360...first cam (engagement portion), 361...second cam, 362...base, 363...parallel crank mechanism or parallel link mechanism, 364...connecting bar, 365...bracket, 366...operating member (operating portion), 366a...input portion, 366b...output portion, 367...tension spring, 368...stopper, 400...bracket, 401...contact portion, 402...guide rail, 403...guide shoe, 404...slide guide, C...clearance, S...rectilinear motion

Claims

1. 1. An elevator landing door engaging device that is provided in a car door device and engages with an engaged portion of a landing door when the car door is opened, thereby opening the landing door in association with the opening operation of the car door, an engaging portion that moves linearly in a direction perpendicular to a vertical plane of the car door as viewed from the vertical direction, and is provided so as to be movable between a retreated position where the engaging portion is separated from the landing door and cannot be engaged with the engaging portion, and an advanced position where the engaging portion is close to the landing door and can be engaged with the engaging portion; and an operating unit which changes from a first state to a second state when a portion that has been in contact with the contact portion in a fully closed state of the car door separates from the contact portion as the car door is opened, thereby releasing the restraint caused by the contact, and which applies a force directly to the engaging portion or indirectly via a link mechanism to the engaging portion in response to the change from the first state to the second state, thereby moving the engaging portion from the retracted position to the advanced position. An elevator landing door engagement device.

2. the car door includes a connector for connecting the car door to a movable body of the door opening and closing device; The operating unit is provided directly on the connector or indirectly via a bracket.

2. The elevator door engagement device of claim 1.

3. When the car door is a center-opening type, the abutment portion is provided directly on the connector of the other car door or indirectly via a bracket.

3. The elevator door engagement device of claim 2.

4. The connecting member is configured so that the entire car door can move within a predetermined range in the opening and closing operation direction of the car door.

3. The elevator door engagement device of claim 2.

5. The engaging portion is a link on the landing door side of the parallel link mechanism that is provided vertically along a vertical plane that is parallel to and perpendicular to the vertical plane of the car door, and moves from the retracted position to the advanced position in an obliquely upward direction as the parallel link mechanism changes state, The operating portion applies an upward force to the engaging portion directly or indirectly via a parallel link mechanism to move the engaging portion from the retracted position to the advanced position.

2. The elevator door engagement device of claim 1.

6. The operating unit includes an input unit that moves in contact with and away from the contact unit, and an output unit that applies an upward force to the engaging unit directly or indirectly via a parallel link mechanism, and is provided so as to be rotatable between a first state and a second state, and is elastically biased so as to change from the first state to the second state.

6. An elevator door engagement device according to claim 5.

7. The elevator is provided with the landing door engagement device according to any one of claims 1 to 6. Elevator.

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