Car door arrangement for an elevator

Abstract

The present disclosure aims to obtain an elevator car door device that can more simply and reliably unlock a car door lock mechanism when forcibly moving a car door in an opening direction from a landing. A door blade protrusion (62a) is provided to a door block side door blade (62). In addition, a cam protrusion (71c) is provided to a rotating cam (71). When manually moving a first car door (32) in an opening direction from a landing via a first landing door (16), the rotating cam (71) rotates in an opposite direction, and the cam protrusion (71c) abuts against the door blade protrusion (62a). Thus, the door block side door blade (62) is displaced toward the door block side of the first car door (32), and the car door lock mechanism (35) is unlocked.

Description

Technical Field

[0001] This disclosure relates to elevator car door devices. Background Technology

[0002] In conventional elevator car door locking devices, when the car is at the stop position, the car door moves towards the door frame side, thereby causing the door stop side door knife to abut against the interlocking roller and move to the unlock position. At the same time, the counterweight moves to the side opposite to the door stop side door knife (for example, see Patent Document 1).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent No. 5940220 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In the aforementioned conventional car door locking devices, a locking mechanism is installed between the car door frame and the car door to lock the car door in the closed position. Therefore, if it is desired to forcibly move the car door in the opening direction from the landing, the locking mechanism must be manually released.

[0008] This disclosure was made to solve the aforementioned problems, and its purpose is to provide an elevator car door device that can more easily and reliably unlock the car door locking mechanism when the car door is forcibly moved in the opening direction from a landing.

[0009] Methods for solving problems

[0010] The elevator car door device disclosed herein includes: a car door disposed in a car; a car-side connecting mechanism disposed in the car door, which, when the car door is opened, connects the landing door to the car door by holding a landing-side connecting member disposed in a landing door; an opening and closing linkage mechanism that links the operation of the car-side connecting mechanism with the car door; and a car door locking mechanism disposed between the car and the car door, which restricts the movement of the car door in the opening direction when the car is in a position away from the landing. The car-side connecting mechanism has a door knife for opening the landing door and a door knife for holding the door, which are movable relative to the car door in the opening and closing direction of the car door and are opposite to each other in the opening and closing direction of the car door. The opening and closing linkage mechanism includes: a first driven member disposed in the door knife for holding the door; and a rotating cam that is rotatable. The door is equipped with an unlocked part on the door knife for opening the landing station and an unlocking part on the rotating cam. During the normal opening operation of the car door, the rotating cam rotates in the forward direction in conjunction with the operation of the car door. The first driven member is guided by the rotating cam, thereby moving the door knife for holding the door towards the door stop of the car door. The car side connecting mechanism holds the landing side connecting member, and the door knife for opening the landing station is pressed by the landing side connecting member and moved towards the door stop of the car door, thus unlocking the car door locking mechanism. When the car door is manually moved in the opening direction from the landing station via the landing door, the door knife for holding the door is pressed by the landing side connecting member and moved towards the door frame of the car door. The rotating cam is pressed by the first driven member and rotates in the reverse direction. The unlocking part abuts against the unlocked part, and the door knife for opening the landing station is pressed and moved towards the door stop of the car door, thus unlocking the car door locking mechanism.

[0011] Invention Effects

[0012] According to the elevator car door device disclosed herein, when the car door is forcibly moved in the opening direction from the landing, the car door locking mechanism can be unlocked more easily and reliably. Attached Figure Description

[0013] Figure 1 This is a schematic structural diagram of the elevator according to embodiment 1.

[0014] Figure 2 View from the shaft side Figure 1 A front view of the main parts of the landing gate device.

[0015] Figure 3 Observation from the station side Figure 1 A front view of the main parts of the car door assembly.

[0016] Figure 4 It is an enlarged representation Figure 3 The front view of the telescopic connector.

[0017] Figure 5 It means Figure 4 The front view of the telescopic connector in its extended state.

[0018] Figure 6 It means Figure 3 The main view of the first car door starting to move in the opening direction.

[0019] Figure 7 It means Figure 6 The main view of the state after the first car door has been moved further in the opening direction.

[0020] Figure 8 It means Figure 7 The main view of the state after the first car door has been moved further in the opening direction.

[0021] Figure 9 Observation from the station side Figure 2 Rear view of the interlocking latch, the fixed-side interlocking roller, and the movable-side interlocking roller.

[0022] Figure 10 This indicates that when the car is stopped at the position away from the landing, it is intended to... Figure 6 The front view of the first car door moving in the opening direction.

[0023] Figure 11 This indicates that the operation is performed through the layer station. Figure 3 A front view of the state after the movable side interlocking roller has moved to the unlocking side.

[0024] Figure 12 It means Figure 11 The front view of the rotating cam after it has rotated counterclockwise.

[0025] Figure 13 It means to make Figure 12 The front view of the first car door after it has moved in the opening direction.

[0026] Figure 14 It means to make Figure 13 The main view of the state after the first car door has been moved further in the opening direction.

[0027] Figure 15 This is a front view showing the main parts of the elevator car door device according to Embodiment 2.

[0028] Figure 16 It means Figure 15 The main view of the first car door starting to move in the opening direction.

[0029] Figure 17 It means Figure 16The main view of the state after the first car door has been moved further in the opening direction.

[0030] Figure 18 It means Figure 17 The main view of the state after the first car door has been moved further in the opening direction.

[0031] Figure 19 This indicates that when the car is stopped at the position away from the landing, it is intended to... Figure 15 The front view of the first car door moving in the opening direction.

[0032] Figure 20 This indicates that the operation is performed through the layer station. Figure 15 A front view of the state after the movable side interlocking roller has moved to the unlocking side.

[0033] Figure 21 It means Figure 20 The front view of the rotating cam after it has rotated counterclockwise.

[0034] Figure 22 This is a front view showing the main parts of the elevator car door device in Embodiment 3.

[0035] Figure 23 It means Figure 22 The main view of the first car door starting to move in the opening direction.

[0036] Figure 24 It means Figure 23 The main view of the state after the first car door has been moved further in the opening direction.

[0037] Figure 25 It means Figure 24 The main view of the state after the first car door has been moved further in the opening direction.

[0038] Figure 26 This indicates that when the car is stopped at the position away from the landing, it is intended to... Figure 22 The front view of the first car door moving in the opening direction.

[0039] Figure 27 This indicates that the operation is performed through the layer station. Figure 22 A front view of the state after the movable side interlocking roller has moved to the unlocking side.

[0040] Figure 28 It means Figure 27 The front view of the rotating cam after it has rotated counterclockwise.

[0041] Label Explanation

[0042] 8: Car; 12: Car door assembly; 32: First car door; 29: Fixed side interlocking roller (landing side connecting component); 30: Movable side interlocking roller (landing side connecting component); 35: Car door locking mechanism; 36: Car side connecting mechanism; 37: Opening and closing linkage mechanism; 62: Door stop side door knife (door knife for opening the door at the landing); 62a: Door knife protrusion (unlocked part); 67: Door sleeve side door knife (door knife for holding); 70: First driven member; 71: Rotary cam; 71c: Cam protrusion (unlocked part); 72, 81: Fixed cam; 72a: Fixed side guide part; 73, 82: Rotating component; 74, 83: Second driven member; 75: Telescopic connecting body; 84: Connecting body. Detailed Implementation

[0043] The embodiments will now be described with reference to the accompanying drawings.

[0044] Implementation method 1.

[0045] Figure 1 This is a schematic structural diagram of the elevator according to Embodiment 1. In the diagram, a machine room 2 is provided above the hoistway 1. The machine room 2 is equipped with a traction machine 3, a deflector sheave 4, and an elevator control device 5.

[0046] The traction machine 3 includes a drive sheave 6, a traction machine motor (not shown), and a traction mechanism brake (not shown). The traction machine motor rotates the drive sheave 6. The traction mechanism brake keeps the drive sheave 6 stationary. Additionally, the traction mechanism brakes the rotation of the drive sheave 6.

[0047] A suspension body 7 is wound around the drive sheave 6 and the deflector sheave 4. Multiple ropes or belts are used as the suspension body 7. A car 8 is connected to the first end of the suspension body 7. A counterweight 9 is connected to the second end of the suspension body 7.

[0048] The car 8 and counterweight 9 are suspended by the suspension body 7, and move up and down within the hoistway 1 by rotating the drive sheave 6. The elevator control device 5 controls the operation of the car 8 by controlling the traction machine 3.

[0049] A pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are installed in the hoistway 1. The pair of car guide rails guide the raising and lowering of the car 8. The pair of counterweight guide rails guide the raising and lowering of the counterweight 9.

[0050] The car 8 has a car frame 10, a car compartment 11, and a car door assembly 12. A suspension body 7 is connected to the car frame 10. The car compartment 11 is supported on the car frame 10. A door controller 13 is installed on the car 8. The door controller 13 controls the car door assembly 12.

[0051] Each of the multi-level stations is equipped with a station door device 14. Each station door device 14 opens and closes in conjunction with the car door device 12 when the car 8 stops.

[0052] Figure 2 View from the shaft 1 side Figure 1 A front view of the main parts of the landing door assembly 14. Each landing door assembly 14 has a landing door beam 15, a first landing door 16, a second landing door 17, a landing door linkage mechanism 18, an interlocking device 19, and a door closer (not shown).

[0053] Each of the multiple floors has a landing entrance / exit 14a. A landing door beam 15 is fixed to the upper part of each landing entrance / exit 14a. A landing door guide rail 15a is installed on the landing door beam 15. The landing door guide rail 15a is horizontally arranged parallel to the width direction of the landing entrance / exit 14a. The width direction of the landing entrance / exit 14a is parallel to the opening and closing direction of the first landing door 16 and the second landing door 17. Figure 2 The left and right directions.

[0054] The first-floor station door 16 and the second-floor station door 17 are suspended from the station door guide rail 15a. In addition, the first-floor station door 16 and the second-floor station door 17 are guided by the station door guide rail 15a to move in opposite directions when opening and closing the station entrance / exit 14a.

[0055] The first-floor station door 16 and the second-floor station door 17 each have a station door body 20 and a station door hanger 21. The station door body 20 of each floor opens and closes the station entrance / exit 14a.

[0056] The landing door hanger 21 is fixed to the upper part of the landing door body 20. In addition, the landing door hanger 21 is hung on the landing door guide rail 15a.

[0057] The floor door linkage mechanism 18 includes a first floor pulley 22, a second floor pulley 23, a ring-shaped linkage rope 24, a first floor door connecting accessory 25, and a second floor door connecting accessory 26.

[0058] The first-level station pulley 22 and the second-level station pulley 23 are spaced apart from each other on the station entrance / exit 14a across the width of the station. The linkage rope 24 is wound around the first-level station pulley 22 and the second-level station pulley 23.

[0059] The first-level gate 16 is connected to the lower part of the linkage rope 24 via the first-level gate connecting fitting 25. The second-level gate 17 is connected to the upper part of the linkage rope 24 via the second-level gate connecting fitting 26.

[0060] When the linkage rope 24 circulates through the opening and closing action of the first-floor station door 16, the second-floor station door 17 moves in the opposite direction to the first-floor station door 16. That is, the station door linkage mechanism 18 links the opening and closing actions of the second-floor station door 17 with those of the first-floor station door 16.

[0061] Interlocking device 19 is installed between the landing door beam 15 and the first landing door 16. In addition, interlocking device 19 prevents the landing entrance / exit 14a from being opened from the landing side when the car 8 is not stopped.

[0062] In addition, the interlocking device 19 includes a hook 27, an interlocking latch 28, a fixed-side interlocking roller 29, and a movable-side interlocking roller 30. The fixed-side interlocking roller 29 and the movable-side interlocking roller 30 are respectively the connecting components on the floor side.

[0063] Hook 27 is fixed to the landing door beam 15. Interlocking latch 28 is rotatably mounted to the landing door hanger 21 of the first landing door 16. When the first landing door 16 and the second landing door 17 are in the fully closed position, the end of the interlocking latch 28 hooks onto hook 27, thereby restricting the movement of the first landing door 16 and the second landing door 17 in the opening direction.

[0064] The fixed-side interlocking roller 29 is coaxially arranged with the rotation axis of the interlocking latch 28. The movable-side interlocking roller 30 is mounted on the interlocking latch 28. Thus, the movable-side interlocking roller 30 can move along an arc centered on the rotation axis of the interlocking latch 28.

[0065] The door closer always applies a force, i.e. a self-closing force, to the first-level station door 16 and the second-level station door 17 in the closing direction. The door closer, for example, uses the gravity acting on the counterweight of the door closer to generate the self-closing force of the first-level station door 16 and the second-level station door 17.

[0066] Figure 3 Observation from the station side Figure 1 The front view of the main parts of the car door assembly 12. The car door assembly 12 includes a car door beam 31, a first car door 32, a second car door 33, a car door drive mechanism 34, a car door locking mechanism 35, a car side connecting mechanism 36, and an opening and closing linkage mechanism 37.

[0067] A car entrance / exit 11a is provided in the car compartment 11. A car door beam 31 is installed above the car entrance / exit 11a in the car 8. A car door guide rail 31a is provided on the car door beam 31. The car door guide rail 31a is parallel and horizontal to the width direction of the car entrance / exit 11a. The width direction of the car entrance / exit 11a is parallel to the opening and closing direction of the first car door 32 and the second car door 33. Figure 3 The left and right directions.

[0068] The first car door 32 and the second car door 33 are suspended from the car door guide rail 31a. When the car entrance / exit 11a is opened and closed, the first car door 32 and the second car door 33 are guided by the car door guide rail 31a and move in opposite directions.

[0069] The first car door 32 and the second car door 33 each have a car door body 38 and a car door hanger 39. Each car door body 38 opens and closes the car entrance / exit 11a.

[0070] The car door hanger 39 is fixed to the upper part of the car door body 38. In addition, the car door hanger 39 is hung on the car door guide rail 31a.

[0071] The car door drive mechanism 34 is mounted on the car door beam 31. In addition, the car door drive mechanism 34 includes a door motor 41, a first car pulley 42, a second car pulley 43, an annular drive belt 44, a first car door connecting accessory 45, and a second car door connecting accessory 46.

[0072] The door motor 41 is fixed to the car door beam 31. The first car pulley 42 and the second car pulley 43 are spaced apart from each other on the car door beam 31 in the width direction of the car entrance / exit 11a. The first car pulley 42 rotates by the driving force transmitted from the door motor 41.

[0073] The drive belt 44 is wound around the first car pulley 42 and the second car pulley 43. The rotation of the first car pulley 42 is transmitted to the second car pulley 43 through the drive belt 44.

[0074] The first car door 32 is connected to the lower part of the drive belt 44 via the first car door connecting fitting 45. The second car door 33 is connected to the upper part of the drive belt 44 via the second car door connecting fitting 46.

[0075] When the first car pulley 42 rotates, the drive belt 44 circulates, and the first car door 32 and the second car door 33 move in opposite directions.

[0076] The car door locking mechanism 35 is disposed between the first car door 32 and the car door beam 31. Furthermore, when the car 8 is in the position away from the landing, the car door locking mechanism 35 restricts the movement of the first car door 32 in the opening direction. Additionally, the car door locking mechanism 35 includes a fixed locking member 51, a movable locking member 52, a connecting rod 53, a locking detection switch 54, and a short-circuit component 55.

[0077] The fixed locking member 51 is fixed to the car door beam 31. The movable locking member 52 is installed on the first car door 32. Furthermore, the movable locking member 52 can... Figure 3 The locked position shown is the same as Figure 8The movable locking member 52 rotates relative to the first car door 32 between the unlocked positions shown. When the movable locking member 52 is in the locked position, if the first car door 32 moves in the opening direction, the movable locking member 52 hooks onto the fixed locking member 51, and the movement of the first car door 32 in the opening direction is restricted.

[0078] The upper end of the connecting rod 53 is rotatably connected to the movable locking member 52. The lower end of the connecting rod 53 is connected to the car-side connecting mechanism 36.

[0079] The lock detection switch 54 is fixed to the car door beam 31 above the fixed lock member 51. The short-circuit component 55 is fixed to the upper part of the movable lock member 52.

[0080] When the first car door 32 is in the fully closed position and the movable locking member 52 is in the locked position, the short-circuit member 55 is inserted into the lock detection switch 54. As a result, the two contacts in the lock detection switch 54 are short-circuited via the short-circuit member 55.

[0081] The short-circuit component 55 is positioned above the rotation center of the movable locking member 52. Furthermore, when the first car door 32 remains fully closed and the movable locking member 52 rotates, the direction in which the short-circuit component 55 enters or exits relative to the locking detection switch 54 forms an acute angle with respect to the opening and closing direction of the first car door 32.

[0082] The car-side connecting mechanism 36 is installed on the first car door 32. In addition, when the first car door 32 is opened, the car-side connecting mechanism 36 connects the first landing door 16 to the first car door 32 by holding the fixed side interlocking roller 29 and the movable side interlocking roller 30.

[0083] When the car 8 stops at a floor, if the first car door 32 begins to open, the movable side interlocking roller 30 and the fixed side interlocking roller 29 are clamped by the car side connecting mechanism 36. As a result, the first car door 32 is connected to the first floor door 16, and the interlocking device 19 is unlocked.

[0084] The car-side connecting mechanism 36 includes a support plate 61, a door stop side door knife 62 which serves as a door knife for opening the landing door, a first upper connecting rod 63, a first lower connecting rod 64, a door frame side stop 65, a door stop side stop 66, a door frame side door knife 67 which serves as a door knife for holding, a second upper connecting rod 68, and a second lower connecting rod 69.

[0085] The support plate 61 is fixed to the first car door 32. The door stop side door knife 62 is mounted on the support plate 61 via the first upper connecting rod 63 and the first lower connecting rod 64. The first upper connecting rod 63 and the first lower connecting rod 64 form a parallel linkage mechanism. Thus, the door stop side door knife 62 can be moved relative to the first car door 32 in the opening and closing direction of the first car door 32.

[0086] The door frame side stop 65 and the door stop side stop 66 are fixed to the support plate 61. The door frame side stop 65 restricts the displacement of the door stop side door knife 62 relative to the first car door 32 in the opening direction of the first car door 32. The door stop side stop 66 restricts the displacement of the door stop side door knife 62 relative to the first car door 32 in the closing direction of the first car door 32.

[0087] The door stop side door knife 62 can be displaced relative to the first car door 32 within the range between the door frame side stop 65 and the door stop side stop 66. In addition, when the first car door 32 is in the fully closed position, the door stop side door knife 62 abuts against the door frame side stop 65 by gravity or the elastic force of a door knife spring (not shown).

[0088] The lower end of the door stop side door knife 62 is rotatably connected to the first end of the first lower link 64. The lower end of the connecting rod 53 is rotatably connected to the second end of the first lower link 64. The second end of the first lower link 64 is the end on the side opposite to the first end with respect to the rotation center of the first lower link 64.

[0089] With the door stop-side door blade 62 abutting against the door frame-side stop 65, the movable locking member 52 is in the locked position. Furthermore, when the door stop-side door blade 62 moves away from the door frame-side stop 65, the first lower connecting rod 64... Figure 3 Rotating clockwise causes the movable locking component 52 to rotate toward the unlocked position.

[0090] The door frame side door knife 67 is disposed on the door frame side of the first car door 32, relative to the door stop side door knife 62. Furthermore, the door stop side door knife 62 and the door frame side door knife 67 are opposite each other in the opening and closing direction of the first car door 32. Additionally, the door frame side door knife 67 is mounted on the support plate 61 via the second upper connecting rod 68 and the second lower connecting rod 69.

[0091] The second upper link 68 and the second lower link 69 constitute a parallel linkage mechanism. Thus, the door sleeve side door knife 67 can be moved relative to the first car door 32 in the opening and closing direction of the first car door 32. By moving the door sleeve side door knife 67 towards the door stop side of the first car door 32, the door sleeve side door knife 67 clamps the fixed side interlocking roller 29 and the movable side interlocking roller 30 between itself and the door stop side door knife 62, thereby performing a gripping action.

[0092] The opening and closing linkage mechanism 37 links the opening and closing actions of the car-side connecting mechanism 36 and the first car door 32. In addition, the opening and closing linkage mechanism 37 has a first follower 70, a rotating cam 71, a fixed cam 72, a rotating component 73, a second follower 74, and a telescopic connecting body 75.

[0093] The first follower 70 is installed on the door blade 67 on the side of the door frame. The first follower 70 is roller-shaped.

[0094] The rotary cam 71 is rotatably mounted on the support plate 61. The rotary cam 71 is provided with a groove-shaped closing-side guide 71a and an opening-side guide 71b. The opening-side guide 71b is connected to the closing-side guide 71a.

[0095] As the door-closing guide portion 71a moves further away from the door-side guide portion 71b, that is, as it approaches the bottom of the slot, it moves closer to the rotation center of the rotary cam 71. Conversely, as the door-closing guide portion 71a moves closer to the door-opening guide portion 71b, it moves further away from the rotation center of the rotary cam 71.

[0096] The door-opening guide 71b is an arc-shaped curved surface centered on the rotation center of the rotary cam 71. That is, the distance between the door-opening guide 71b and the rotation center of the rotary cam 71 is constant.

[0097] By rotating the rotary cam 71, the first follower 70 moves along either the closing side guide 71a or the opening side guide 71b. As a result, the door sleeve side door knife 67 is displaced relative to the first car door 32 in the direction of the opening and closing action of the first car door 32.

[0098] The fixed cam 72 is fixed to the car door beam 31. The fixed cam 72 is provided with a groove-shaped fixed side guide 72a.

[0099] The rotating component 73 is rotatably mounted on the support plate 61 above the rotating cam 71.

[0100] The second follower 74 is mounted on the rotating component 73. The second follower 74 is roller-shaped. When the first car door 32 is in the fully closed position, the second follower 74 is inserted into the fixed side guide 72a and contacts the inner surface of the fixed side guide 72a.

[0101] The upper end of the telescopic connector 75 is rotatably connected to the rotating component 73. The lower end of the telescopic connector 75 is rotatably connected to the rotating cam 71. Thus, the telescopic connector 75 connects the rotating cam 71 to the rotating component 73.

[0102] A door knife protrusion 62a, which serves as an unlocking part, is provided on the door knife 62 on the door stop side. The door knife protrusion 62a protrudes toward the door frame side of the first car door 32.

[0103] A cam protrusion 71c, serving as an unlocking part, is provided on the outer side of the closing side guide 71a of the rotary cam 71. The cam protrusion 71c protrudes toward the door stop side of the first car door 32.

[0104] During the normal opening action of the first car door 32, the rotating cam 71 rotates in the positive direction in conjunction with the action of the first car door 32. The first follower 70 is guided by the rotating cam 71, thereby moving the door sleeve side door knife 67 toward the door stop side of the first car door 32. Then, the car side connecting mechanism 36 holds the movable side interlocking roller 30 and the fixed side interlocking roller 29, and the door stop side door knife 62 is pressed toward the door stop side of the first car door 32 by the movable side interlocking roller 30 and the fixed side interlocking roller 29, and the car door locking mechanism 35 is unlocked.

[0105] The positive direction of rotation of rotary cam 71 is Figure 3 The clockwise direction is the direction in which the cam protrusion 71c moves away from the door knife protrusion 62a. Therefore, when the rotating cam 71 rotates in the positive direction, the cam protrusion 71c does not contact the door knife protrusion 62a.

[0106] When the first car door 32 is manually moved in the opening direction from the landing station via the first landing door 16, the door sleeve side door knife 67 is pressed by the movable side interlocking roller 30 and the fixed side interlocking roller 29 and moved towards the door sleeve side of the first car door 32. The rotating cam 71 is pressed by the first follower 70 and rotates in the opposite direction to the forward direction. The cam protrusion 71c abuts against the door knife protrusion 62a. As a result, the door stop side door knife 62 is pressed and moved towards the door stop side of the first car door 32, and the car door locking mechanism 35 is unlocked.

[0107] Figure 4 It is an enlarged representation Figure 3 The telescopic connector 75 is shown in the front view. The telescopic connector 75 has an upper rod 76, a lower rod 77, a guide member 78, and a return spring 79.

[0108] The guide member 78 has a flat spring seat 78a, a flat rod fixing part 78b, and a flat connecting part 78c. The spring seat 78a protrudes at a right angle from the upper end of the connecting part 78c relative to the connecting part 78c. The rod fixing part 78b protrudes at a right angle from the lower end of the connecting part 78c relative to the connecting part 78c. In addition, the rod fixing part 78b is opposite to the spring seat 78a.

[0109] The upper rod 76 has a rod body 76a, a rod stop 76b, and a spring bracket 76c. The upper end of the rod body 76a is rotatably connected to the rotating component 73. The middle portion of the rod body 76a passes through the spring seat 78a. The rod stop 76b is fixed to the middle portion of the rod body 76a on the side opposite to the spring bracket 76c, relative to the spring seat 78a.

[0110] A spring bracket 76c is disposed at the lower end of the rod body 76a. Furthermore, the spring bracket 76c is located between the spring seat 78a and the rod fixing part 78b. Additionally, the spring bracket 76c is positioned opposite the spring seat 78a.

[0111] The upper end of the lower rod 77 is fixed to the rod fixing part 78b. The lower end of the lower rod 77 is rotatably connected to the rotary cam 71.

[0112] A return spring 79 is disposed between the spring seat 78a and the spring bracket 76c. In this example, a coil spring is used as the return spring 79. The upper rod 76 passes through the return spring 79.

[0113] With this structure, the telescopic connector 75 can... Figure 4 The diagram shows the stretching and contraction between the normal state and the state that is stretched from the normal state. Figure 5 It means Figure 4 Front view of the telescopic connector 75 in its extended state.

[0114] The telescopic connector 75 remains in its normal state during the normal opening and closing of the first car door 32. In addition, when the first car door 32 is manually moved in the opening direction from the landing station via the first landing door 16, the telescopic connector 75 is stretched by a tension force greater than a set tension force.

[0115] That is, when a tensile force against the return spring 79 is applied to the telescopic connector 75 from its normal state, such as Figure 5 As shown, the return spring 79 is compressed, the rod stop 76b disengages from the spring seat 78a, and the telescopic connector 75 extends as a whole. At this time, the upper rod 76 is guided by the spring seat 78a, thereby moving straight relative to the guide member 78 along the extension line of the lower rod 77.

[0116] When the tension force of the return spring 79 is released, the upper rod 76 moves relative to the guide member 78 by the restoring force of the return spring 79 until the rod stop 76b abuts against the spring seat 78a. Thus, the overall length of the telescopic connector 75 returns to its original length. In the normal state, the rod stop 76b abuts against the side of the spring seat 78a opposite to the return spring 79 by the elastic force of the return spring 79.

[0117] The tensile force is set to a value sufficiently large to be greater than the force experienced during normal opening and closing operations, so that the first car door 32 does not extend from its normal state during normal opening and closing operations. Furthermore, the tensile force is set to a value sufficiently small to be less than the upper limit of the force required to pry open the first car door 32 from the landing. The upper limit of the force required to pry open the first car door 32 from the landing is, for example, 300 N.

[0118] Next, the normal operation of the car door assembly 12 will be explained. For example... Figure 3As shown, when the first car door 32 and the second car door 33 are in the fully closed position, the door stop side door knife 62 and the door sleeve side door knife 67 are separated from the fixed side interlocking roller 29 and the movable side interlocking roller 30, respectively.

[0119] Additionally, the door stop side door knife 62 abuts against the door frame side stop 65. Furthermore, the movable locking member 52 is in the locked position.

[0120] The first follower 70 is located slightly near the opening side guide 71b from the terminating end of the closing side guide 71a. The terminating end is the end of the closing side guide 71a on the side opposite to the opening side guide 71b. In this state, the first follower 70 can move relative to the rotating cam 71 in both directions toward and away from the terminating end.

[0121] When the rotating cam 71 causes the first follower 70 to move from Figure 3 When the position is rotated towards the end of the terminal, the cam protrusion 71c abuts against the door knife protrusion 62a, and the door knife 62 on the door stop side is pressed towards the door stop side of the first car door 32 and moved.

[0122] When the first car door 32 from Figure 3 When the state begins to move in the opening direction, such as Figure 6 As shown, the door stop side door knife 62 first abuts against the movable side interlocking roller 30. Additionally, by removing the short-circuit component 55 from the lock detection switch 54, the lock detection switch 54 becomes open.

[0123] Then, when the first car door 32 moves further in the opening direction, as... Figure 7 As shown, the movable side interlocking roller 30 is pressed by the door stop side door knife 62, and the interlocking device 19 is in the unlocked state. Additionally, the second driven member 74 moves slightly along the fixed side guide 72a of the fixed cam 72, and the rotating member 73 moves towards... Figure 7 Rotate clockwise.

[0124] The rotation of the rotating component 73 is transmitted to the rotating cam 71 via the telescopic connector 75. Thus, the rotating cam 71 moves towards... Figure 7 The rotation is clockwise, i.e., in the positive direction. As a result, the first follower 70 moves along the closing side guide 71a relative to the rotating cam 71 towards the opening side guide 71b.

[0125] At this time, as the first follower 70 gradually moves away from the rotation center of the rotating cam 71, the door sleeve side door knife 67 gradually moves towards the door stop side door knife 62.

[0126] Then, when the first car door 32 moves further in the opening direction, as... Figure 8As shown, the door sleeve side door knife 67 abuts against the fixed side interlocking roller 29 and the movable side interlocking roller 30. Thus, the fixed side interlocking roller 29 and the movable side interlocking roller 30 are clamped between the door stop side door knife 62 and the door sleeve side door knife 67. Additionally, the door stop side door knife 62 abuts against the door stop side stop member 66.

[0127] The movement of the door stop 62 is transmitted to the movable locking member 52 via the first lower connecting rod 64 and the connecting rod 53. This causes the movable locking member 52 to rotate to the unlocked position. Consequently, further movement of the first car door 32 in the opening direction is permitted.

[0128] At the moment when the first floor door 16 and the first car door 32 begin to move simultaneously in the opening direction, the fixed side interlocking roller 29 and the movable side interlocking roller 30 are firmly held by the car side connecting mechanism 36. Therefore, smooth opening and closing operations can be performed.

[0129] Furthermore, the straight line passing through the center of the first follower 70 and the contact point between the first follower 70 and the door-side guide 71b also passes through the rotation center of the rotary cam 71. Therefore, the door sleeve side door knife 67 will not move in the opening direction even if it is subjected to a force in the opening direction of the first car door 32. In addition, even if the rotating member 73 rotates further, causing the rotary cam 71 to rotate further, the position of the door sleeve side door knife 67 will not change. Furthermore, the telescopic connecting body 75 is not subjected to a tensile force.

[0130] Therefore, during the movement of the first car door 32, the fixed side interlocking roller 29 and the movable side interlocking roller 30 are stably held by the car side connecting mechanism 36.

[0131] Here, Figure 8 The position of the first car door 32 shown is the locking start position when the first car door 32 is closed. The locking start position is the position of the first car door 32 when the car door locking mechanism 35 starts locking during the normal closing action of the first car door 32, that is, the position of the first car door 32 when the movable locking member 52 starts rotating from the unlocked position to the locked position side.

[0132] in addition, Figure 9 Observation from the station side Figure 2 Rear view of the interlocking latch 28, the fixed-side interlocking roller 29, and the movable-side interlocking roller 30. When the interlocking device 19 is in the locked state, the fixed-side interlocking roller 29 and the movable-side interlocking roller 30 are arranged within a width W1 range in the opening and closing direction of the first car door 32.

[0133] Furthermore, during the normal closing operation, when the first car door 32 reaches the locking start position, the gap between the door stop side door knife 62 and the door frame side door knife 67 is less than the width W1.

[0134] According to this structure, even if the first-floor station door 16 fails to close automatically before reaching the fully closed position due to wind pressure or other reasons, the door motor 41 can drive the door 16 to move in the closing direction using the door sleeve side door knife 67. Thus, the movable side interlocking roller 30 can move the door stop side door knife 62 to a position corresponding to the unlocking position of the movable locking member 52.

[0135] In contrast, during the normal closing action, when the first car door 32 reaches the locking start position, if the gap between the door stop side door knife 62 and the door frame side door knife 67 is not less than the width W1, the first car door 32 may self-lock and cannot be opened.

[0136] That is, even if the first car door 32 moves to the fully closed position, but the first landing door 16 stops just before reaching the fully closed position due to wind pressure or other reasons, the door closing detection switch of the interlocking device 19 will not be activated, and therefore the car 8 cannot move. Therefore, although the first car door 32 attempts to open again, even if it moves to the locking start position, the door stop side door knife 62 does not contact the movable side interlocking roller 30. Therefore, the first car door 32 is self-locked and cannot be opened.

[0137] As a solution to this problem, in Embodiment 1, the door sleeve side door knife 67 is configured to close earlier during the normal opening operation of the first car door 32. Therefore, during the normal closing operation of the first car door 32, when the first landing door 16 stops just before reaching the fully closed position, similarly, at the timing when the first car door 32 is in the locked position, the fixed side interlocking roller 29 and the movable side interlocking roller 30 are pressed against the door stop by the door sleeve side door knife 67, causing the first landing door 16 to close, and the door closing detection switch of the interlocking device 19 is activated.

[0138] Therefore, according to the structure of Embodiment 1, when the car 8 is stopped at a floor, the movable locking member 52 will not engage with the fixed locking member 51 and self-lock under any circumstances.

[0139] Next, the situation where car 8 stops at the departure floor due to some kind of abnormality will be explained. Figure 10 This indicates that when car 8 is stopped at the departure floor position, it is desired to... Figure 6 The front view of the first car door 32 in the opening direction.

[0140] In this case, there is no fixed-side interlocking roller 29 and movable-side interlocking roller 30 between the door stop side door knife 62 and the door frame side door knife 67. Therefore, even if the first car door 32 begins to move in the opening direction, the door stop side door knife 62 remains in contact with the door frame side stop 65.

[0141] Therefore, when the movable locking member 52 is in the locked position, it abuts against the fixed locking member 51, and further movement of the first car door 32 in the opening direction is prevented.

[0142] Next, we will explain the situation where the car entrance / exit 11a is opened from the landing while the car 8 is stopped at the landing during elevator maintenance. Figure 11 This indicates that the operation is performed through the layer station. Figure 3 A front view of the state after the movable side interlocking roller 30 moves to the unlocking side.

[0143] After the maintenance personnel unlock the interlocking device 19 via operation from the landing station, the first landing door 16 moves in the opening direction. As a result, the fixed side interlocking roller 29 and the movable side interlocking roller 30 move in the opening direction of the first car door 32 and abut against the door sleeve side door knife 67.

[0144] To further move the first landing door 16 in the opening direction, a force in the opening direction of the first car door 32 is applied to the door sleeve side door knife 67. Furthermore, the rotating cam 71 is moved towards... Figure 11 The counterclockwise rotational force is applied from the door sleeve side door knife 67 to the rotary cam 71 via the first follower 70. As a result, the rotary cam 71 rotates... Figure 11 It rotates counterclockwise, that is, in the opposite direction.

[0145] When the rotary cam 71 rotates in the opposite direction, as Figure 12 As shown, the cam protrusion 71c abuts against the door knife protrusion 62a, and the door stop side door knife 62 is pressed and moved towards the door stop side of the first car door 32. As a result, the movable locking member 52 rotates to the unlocked position, the car door locking mechanism 35 is unlocked, and further movement of the first car door 32 in the opening direction is allowed.

[0146] When the first-level station gate 16 is used Figure 12 When the state moves further in the opening direction, since the door frame side door knife 67 is installed on the first car door 32, therefore... Figure 13 As shown, the rotating component 73 is directed towards Figure 12 The telescopic connector 75 rotates clockwise. As a result, a tensile force is applied to the telescopic connector 75, causing the telescopic connector 75 to elongate.

[0147] When the telescopic connector 75 is extended to its extended state, the first-floor station door 16 cannot be moved in the opening direction. However, if the force applied to the first-floor station door 16 is released, the force required to retract through the telescopic connector 75, such as... Figure 14 As shown, the telescopic connector 75 returns to its normal state, and the rotating cam 71 moves towards... Figure 13 Rotate clockwise.

[0148] As a result, the door blade 67 on the door frame side moves towards the door stop side. At this time, the first floor door 16 moves slightly in the closing direction. However, since the first car door 32 has moved fully in the opening direction, the car door locking mechanism 35 will not be locked, allowing the first car door 32 to move further in the opening direction.

[0149] Furthermore, since the first follower 70 moves to contact the door-opening side guide 71b of the rotary cam 71, even if the door sleeve side door knife 67 is subjected to a force in the opening direction, no force will be generated that causes the rotary cam 71 to rotate clockwise. Therefore, even if the first car door 32 is moved further in the opening direction, no reaction force will be generated.

[0150] In this car door assembly 12, a door knife protrusion 62a is provided on the door stop side door knife 62. Additionally, a cam protrusion 71c is provided on the rotating cam 71. Furthermore, when the first car door 32 is manually moved in the opening direction from the landing station via the first landing door 16, the rotating cam 71 rotates in the opposite direction, and the cam protrusion 71c abuts against the door knife protrusion 62a. As a result, the door stop side door knife 62 shifts towards the door stop side of the first car door 32, and the car door locking mechanism 35 is unlocked.

[0151] Therefore, it is not necessary to manually rotate the movable locking member 52 to the unlocked position through the gap between the first landing door 16 and the second landing door 17 created when the first landing door 16 begins to move in the opening direction in order to unlock the car door locking mechanism 35. Therefore, when the first car door 32 is forcibly moved in the opening direction from the landing, the car door locking mechanism 35 can be unlocked more simply and reliably.

[0152] In addition, during the normal opening action of the first car door 32, the door stop side door knife 62 is pressed by the fixed side interlocking roller 29 and the movable side interlocking roller 30 and moved toward the door stop side of the first car door 32, thereby unlocking the car door locking mechanism 35.

[0153] Therefore, the car door device 12 can be made to lock the first car door 32 through a simple structure.

[0154] Furthermore, a telescopic connector 75 is provided in the opening and closing linkage mechanism 37. The telescopic connector 75 remains in its normal state during the normal opening and closing operation of the first car door 32. In addition, when the first car door 32 is manually moved in the opening direction from the landing station via the first landing door 16, the telescopic connector 75 is stretched into its extended state by being subjected to a tensile force greater than a set tensile force.

[0155] Therefore, the force required to forcibly move the first car door 32 in the opening direction from the landing can be reduced.

[0156] Furthermore, when the first car door 32 is in the fully closed position, the second follower 74 is inserted into the fixed-side guide portion 72a. Therefore, if the door sleeve side door knife 67 is activated earlier, the fixed-side interlocking roller 29 and the movable-side interlocking roller 30 can be grabbed immediately after the first car door 32 begins to move in the opening direction, making the opening and closing operation smooth.

[0157] In addition, the telescopic connector 75 has Figure 4 and Figure 5 The structure shown. Therefore, a telescopic connector 75 that can stretch between the normal state and the extended state can be obtained through a simple structure.

[0158] Furthermore, during normal opening and closing operations, the car-side connecting mechanism 36 can maintain the state of gripping the fixed-side interlocking roller 29 and the movable-side interlocking roller 30. Therefore, the first car door 32 and the first landing door 16 open and close smoothly without unnecessary shaking or mutual offset.

[0159] In addition, during the normal closing operation, when the first car door 32 reaches the locking start position, the gap between the door stop side door knife 62 and the door frame side door knife 67 is less than the width W1.

[0160] Therefore, regardless of the position of the first-floor door 16, that is, even if the first-floor door 16 is not in the fully closed position, the car door locking mechanism 35 can be unlocked more reliably.

[0161] Implementation method 2.

[0162] then, Figure 15 This is a front view showing the main parts of the elevator car door device 12 according to Embodiment 2. The structure of the opening and closing linkage mechanism 37 of the car door device 12 in Embodiment 2 is different from that in Embodiment 1. The opening and closing linkage mechanism 37 in Embodiment 2 includes a first follower 70, a rotating cam 71, a fixed cam 81, a rotating component 82, a second follower 83, a connecting body 84, a tension spring 85, and a rotation stop 86.

[0163] The fixed cam 81 is fixed to the car door beam 31. The middle part of the rotating component 82 is rotatably mounted on the support plate 61 above the rotating cam 71.

[0164] The second follower 83 is mounted on the upper end of the rotating component 82. The second follower 83 is roller-shaped. When the first car door 32 is in the fully closed position, the second follower 83 moves onto the fixed cam 81.

[0165] The upper end of the connecting body 84 is rotatably connected to the lower end of the rotating member 82. The lower end of the connecting body 84 is rotatably connected to the rotating cam 71. Thus, the connecting body 84 connects the rotating cam 71 and the rotating member 82. The connecting body 84 differs from the telescopic connecting body 75 in Embodiment 1; it is a rod-shaped member without telescopic function.

[0166] One end of the tension spring 85 is connected to the support plate 61. The other end of the tension spring 85 is connected to the portion between the rotation center of the rotating component 82 and the second follower 83.

[0167] When the first car door 32 is in the fully closed position, the tension spring 85 applies force to the rotating component 82, causing it to... Figure 15 The force that rotates clockwise. That is, when the first car door 32 is in the fully closed position, the second follower 83 abuts against the fixed cam 81 via the tension spring 85.

[0168] A rotation stop 86 is mounted on the support plate 61. Additionally, the rotation stop 86 restricts the rotation of the rotating component 82. Figure 15 Rotation in a clockwise direction.

[0169] When the first car door 32 is in the fully closed position, the rotating component 82 can rotate in a direction away from the fixed cam 81 towards the second follower 83. That is, the shape of the fixed cam 81 is such that it allows the rotating component 82 to rotate in a direction away from the fixed cam 81 towards the second follower 83.

[0170] The other structures of Embodiment 2 are the same as those of Embodiment 1.

[0171] Next, the main operations of the car door assembly 12 under normal conditions will be explained. When the first car door 32 opens from... Figure 15 When the state begins to move in the opening direction, such as Figure 16 As shown, the door stop side door knife 62 first abuts against the movable side interlocking roller 30. Additionally, by removing the short-circuit component 55 from the lock detection switch 54, the lock detection switch 54 becomes open.

[0172] Then, when the first car door 32 moves further in the opening direction, as... Figure 17 As shown, the movable side interlocking roller 30 is pressed by the door stop side door knife 62, and the interlocking device 19 is in the unlocked state. Additionally, the second driven member 83 moves slightly along the fixed cam 81, and the rotating member 82 moves towards... Figure 17 Rotate clockwise.

[0173] The rotation of the rotating component 82 is transmitted to the rotating cam 71 via the connecting body 84. Thus, the rotating cam 71 moves towards... Figure 17 Rotate clockwise, that is, in the positive direction.

[0174] Then, when the first car door 32 moves further in the opening direction, as... Figure 18 As shown, the door frame side door knife 67 abuts against the fixed side interlocking roller 29 and the movable side interlocking roller 30. Thus, the fixed side interlocking roller 29 and the movable side interlocking roller 30 are clamped between the door stop side door knife 62 and the door frame side door knife 67.

[0175] The movement of the door stop 62 is transmitted to the movable locking member 52 via the first lower connecting rod 64 and the connecting rod 53. This causes the movable locking member 52 to rotate to the unlocked position. Consequently, further movement of the first car door 32 in the opening direction is permitted.

[0176] Next, the situation where car 8 stops at the departure floor due to some kind of abnormality will be explained. Figure 19 This indicates that when car 8 is stopped at the departure floor position, it is desired to... Figure 15 The front view of the first car door 32 in the opening direction.

[0177] In this case, similar to Embodiment 1, even if the first car door 32 begins to move in the opening direction, the door stop side door knife 62 remains in contact with the door sleeve side stop 65. Therefore, the movable locking member 52, in the locked position, abuts against the fixed locking member 51, preventing further movement of the first car door 32 in the opening direction.

[0178] Next, we will explain the situation where the car entrance / exit 11a is opened from the landing while the car 8 is stopped at the landing during elevator maintenance. Figure 20 This indicates that the operation is performed through the layer station. Figure 15 A front view of the state after the movable side interlocking roller 30 moves to the unlocking side.

[0179] When maintenance personnel unlock the interlocking device 19 and move the first floor door 16 in the opening direction, the fixed side interlocking roller 29 and the movable side interlocking roller 30 move in the opening direction of the first car door 32 and abut against the door sleeve side door knife 67.

[0180] To further move the first landing door 16 in the opening direction, a force in the opening direction of the first car door 32 is applied to the door sleeve side door knife 67. Furthermore, the rotating cam 71 is moved towards... Figure 20 The counterclockwise rotational force is applied from the door frame side door knife 67 to the rotating cam 71 via the first follower 70.

[0181] Therefore, a tensile force is applied to the connecting body 84, and the rotating component 82 moves towards... Figure 20 The second follower 83 rotates counterclockwise, disengaging from the fixed cam 81. Simultaneously, the rotating cam 71 moves towards... Figure 20 It rotates counterclockwise, that is, in the opposite direction.

[0182] When the rotary cam 71 rotates in the opposite direction, as Figure 21 As shown, the cam protrusion 71c abuts against the door knife protrusion 62a, and the door stop side door knife 62 is pressed and moved towards the door stop side of the first car door 32. As a result, the movable locking member 52 rotates to the unlocked position, the car door locking mechanism 35 is unlocked, and further movement of the first car door 32 in the opening direction is allowed.

[0183] With such a car door device 12, when the first car door 32 is forcibly moved in the opening direction from the landing, the car door locking mechanism 35 can be unlocked more easily and reliably.

[0184] Furthermore, when the first car door 32 is in the fully closed position, the rotating component 82 can rotate in the direction away from the fixed cam 81 towards the second follower 83. Therefore, the structure can be simplified.

[0185] Implementation method 3.

[0186] then, Figure 22 This is a front view showing the main parts of the elevator car door device 12 of Embodiment 3. The car door locking mechanism 35 of Embodiment 3 includes a fixed locking member 51, a movable locking member 52, a locking detection switch 54, a short-circuit member 55, and a shaft member 91.

[0187] The movable locking member 52 is rotatably mounted on the support plate 61. That is, the movable locking member 52 is mounted on the first car door 32 via the support plate 61. In addition, the movable locking member 52 is positioned relative to the support plate 61 on the side opposite to the door stop side door knife 62.

[0188] The shaft component 91 is positioned above the rotation center of the first upper connecting rod 63. A retraction hole (not shown) is provided in the support plate 61. Additionally, a connecting hole (not shown) is provided in the movable upper locking member 52. The shaft component 91 passes through the retraction hole and is inserted into the connecting hole at a position below the rotation center of the movable upper locking member 52. Thus, the movement of the first upper connecting rod 63 is linked to the movement of the movable upper locking member 52.

[0189] When the door stop side door knife 62 moves toward the door stop side of the first car door 32, the first upper connecting rod 63 moves toward... Figure 22 Rotating clockwise, shaft component 91 towards Figure 22 The movable locking element 52 moves to the right. Figure 22 Rotating counterclockwise unlocks the car door locking mechanism 35.

[0190] Furthermore, as mentioned above, the door stop side door knife 62 is always subjected to a force that returns towards the door frame side due to gravity or the elastic force of the door knife spring.

[0191] The other structures of Embodiment 3 are the same as those of Embodiment 1.

[0192] Next, the main operations of the car door assembly 12 under normal conditions will be explained. When the first car door 32 opens from... Figure 22 When the state begins to move in the opening direction, such as Figure 23 As shown, the door stop side door knife 62 first abuts against the movable side interlocking roller 30. Additionally, by removing the short-circuit component 55 from the lock detection switch 54, the lock detection switch 54 becomes open.

[0193] Then, when the first car door 32 moves further in the opening direction, as... Figure 24 As shown, the movable side interlocking roller 30 is pressed by the door stop side door knife 62, and the interlocking device 19 is in the unlocked state. Additionally, the second driven member 74 moves slightly along the fixed side guide portion 72a, and the rotating member 73 moves towards... Figure 24 Rotate clockwise.

[0194] The rotation of the rotating component 73 is transmitted to the rotating cam 71 via the telescopic connector 75. Thus, the rotating cam 71 moves towards... Figure 24 Rotate clockwise, that is, in the positive direction.

[0195] Then, when the first car door 32 moves further in the opening direction, as... Figure 25 As shown, the door frame side door knife 67 abuts against the fixed side interlocking roller 29 and the movable side interlocking roller 30. Thus, the fixed side interlocking roller 29 and the movable side interlocking roller 30 are clamped between the door stop side door knife 62 and the door frame side door knife 67.

[0196] The movement of the door stop 62 is transmitted to the movable locking member 52 via the first upper connecting rod 63 and the shaft component 91. This causes the movable locking member 52 to rotate to the unlocked position. Consequently, further movement of the first car door 32 in the opening direction is permitted.

[0197] Next, the situation where car 8 stops at the departure floor due to some kind of abnormality will be explained. Figure 26 This indicates that when car 8 is stopped at the departure floor position, it is desired to... Figure 22 The front view of the first car door 32 in the opening direction.

[0198] In this case, similar to Embodiment 1, even if the first car door 32 begins to move in the opening direction, the door stop side door knife 62 remains in contact with the door sleeve side stop 65. Therefore, the movable locking member 52, in the locked position, abuts against the fixed locking member 51, preventing further movement of the first car door 32 in the opening direction.

[0199] Next, we will explain the situation where the car entrance / exit 11a is opened from the landing while the car 8 is stopped at the landing during elevator maintenance. Figure 27 This indicates that the operation is performed through the layer station. Figure 22 A front view of the state after the movable side interlocking roller 30 moves to the unlocking side.

[0200] When maintenance personnel unlock the interlocking device 19 and move the first floor door 16 in the opening direction, the fixed side interlocking roller 29 and the movable side interlocking roller 30 move in the opening direction of the first car door 32 and abut against the door sleeve side door knife 67.

[0201] To further move the first landing door 16 in the opening direction, a force in the opening direction of the first car door 32 is applied to the door sleeve side door knife 67. Furthermore, the rotating cam 71 is moved towards... Figure 27 The counterclockwise rotational force is applied from the door sleeve side door knife 67 to the rotary cam 71 via the first follower 70. As a result, the rotary cam 71 rotates... Figure 27 It rotates counterclockwise, that is, in the opposite direction.

[0202] When the rotary cam 71 rotates in the opposite direction, as Figure 28 As shown, the cam protrusion 71c abuts against the door knife protrusion 62a, and the door stop side door knife 62 is pressed and moved towards the door stop side of the first car door 32. As a result, the movable locking member 52 rotates to the unlocked position, the car door locking mechanism 35 is unlocked, and further movement of the first car door 32 in the opening direction is allowed.

[0203] With such a car door device 12, when the first car door 32 is forcibly moved in the opening direction from the landing, the car door locking mechanism 35 can be unlocked more easily and reliably.

[0204] Furthermore, in embodiments 1 to 3, the car-side connecting mechanism 36 and the opening / closing linkage mechanism 37 are mounted on a common support plate 61. However, the car-side connecting mechanism 36 and the opening / closing linkage mechanism 37 may also be mounted on different support plates.

[0205] In addition, in embodiments 1 to 3, a centrally opening car door device 12 is shown, but the car door device 12 may also be a single-opening type.

[0206] In addition, the number of car doors and landing doors can be 1 or more, respectively.

[0207] Alternatively, the structure that unlocks and locks the movable locking member 52 by the movement of the door stop side door knife 62 can also be considered in a manner other than those shown in the figure. For example, a method other than those shown in the figure could be as follows: a baffle is provided on the door stop side door knife 62, and an unlocking part is provided on the movable locking member 52, so that when the door stop side door knife 62 moves toward the door stop side, the baffle contacts the unlocking part.

[0208] In addition, embodiments 1 to 3 show a reduced-connection type car door device in which a pair of landing-side connecting members are sandwiched between the door knife for opening the landing door and the door knife for holding the landing door. However, the car door device can also be an enlarged-connection type. In the enlarged-connection type, the distance between the door knife for opening the landing door and the door knife for holding the landing door is increased between the pair of landing-side connecting members fixed to the landing door, thereby holding the pair of landing-side connecting members and connecting the landing door and the car door. In this case, the door knife for opening the landing door is disposed on the door sleeve side of the first car door 32, and the door knife for holding the landing door is disposed on the door stop side of the first car door 32.

[0209] In addition, the overall layout of the elevator is not limited to Figure 1 The layout. For example, the rope winding method can also be a 2:1 rope winding method.

[0210] In addition, elevators can also be machine-room-less elevators, double-decker elevators, and single-shaft multi-car elevators. A single-shaft multi-car elevator is one in which the upper car and the lower car, located directly below the upper car, move independently up and down in a common shaft.

Claims

1. An elevator car door device, comprising: The car door is located in the car; A car-side connecting mechanism is provided on the car door. When the car door is opened, it connects the landing door to the car door by holding the landing-side connecting component provided on the landing door. An opening and closing linkage mechanism that links the movement of the car-side connecting mechanism with the car door; and A car door locking mechanism is installed between the car and the car door to restrict the movement of the car door in the opening direction when the car is in a position away from the landing. The car-side connecting mechanism includes a door knife for opening the landing door and a door knife for holding the door. The door knife for opening the landing door and the door knife for holding the door can be moved relative to the car door in the direction of the opening and closing of the car door, and are positioned opposite each other in the direction of the opening and closing of the car door. The opening and closing linkage mechanism has the following features: A first driven member, which is disposed on the holding door knife; and A rotating cam, which is rotatably mounted on the car door. The door opener at the aforementioned floor level is equipped with an unlocking mechanism. The rotating cam is provided with an unlocking part. During the normal opening action of the car door, the rotating cam rotates in the forward direction in conjunction with the action of the car door. The first driven member is guided by the rotating cam, thereby moving the door handle towards the door stop of the car door. The car-side connecting mechanism holds the landing-side connecting member, and the landing-side door opener is pressed by the landing-side connecting member and moved towards the door stop of the car door. The car door locking mechanism is unlocked. When the car door is manually moved in the opening direction from the landing station via the landing door, the door handle is pressed by the landing station side connecting member and moved toward the door frame side of the car door. The rotating cam is pressed by the first follower and rotates in the opposite direction. The unlocking part abuts against the unlocked part. The door handle for opening the landing door is pressed and moved toward the door stop side of the car door. The car door locking mechanism is unlocked.

2. The elevator car door device according to claim 1, wherein, The door knife for holding the door is positioned on the door frame side of the car door relative to the door knife for opening the landing door. The door knife used for opening the floor station door is a door stop side door knife. The door knife used for gripping is a side door knife of the door frame. When the car door is opened, the door stop side door knife and the door sleeve side door knife clamp the landing side connecting component, thereby holding the landing side connecting component.

3. The elevator car door device according to claim 1 or 2, wherein, The opening and closing linkage mechanism also has: A fixed cam is disposed in the car; A rotating component, which is rotatably mounted on the car door; A second driven member is disposed on the rotating component; as well as A telescopic connector, which connects the rotary cam and the rotary component, is capable of telescoping between a normal state and an extended state (i.e., the extended state). During the normal opening of the car door, the telescopic connector maintains its normal state. The second driven member is guided by the fixed cam to rotate the rotating component. The rotation of the rotating component is transmitted to the rotating cam via the telescopic connector, causing the rotating cam to rotate in the positive direction. When the car door is manually moved in the opening direction from the landing station via the landing door, the telescopic connecting body is stretched into the extended state by being subjected to a tension force greater than a set tension force, and the rotating cam rotates in the opposite direction.

4. The elevator car door device according to claim 3, wherein, The fixed cam is provided with a groove-shaped fixed side guide. When the car door is in the fully closed position, the second follower is inserted into the fixed side guide.

5. The elevator car door device according to claim 1 or 2, wherein, The opening and closing linkage mechanism also has: A fixed cam is disposed in the car; A rotating component, which is rotatably mounted on the car door; The second follower is disposed on the rotating component, and when the car door is in the fully closed position, the second follower abuts against the fixed cam; as well as A connecting body that connects the rotary cam and the rotary component. When the car door is in the fully closed position, the rotating component can rotate in the direction away from the fixed cam of the second follower.

6. The elevator car door device according to claim 1 or 2, wherein, When the car-side connecting mechanism does not connect the landing door to the car door, the width of the landing-side connecting component in the opening and closing direction of the car door is width W1. During the normal closing action of the car door, when the car door reaches the locking start position, the distance between the door knife for opening the landing door and the door knife for holding the door is less than or equal to the width W1. The locking start position is the position of the car door at which the car door locking mechanism begins to lock during the normal closing action of the car door.

Images