CN118103319A - Door device of elevator - Google Patents

Abstract

The door device of the elevator is provided with a car door for opening and closing a car entrance and a landing door for opening and closing a landing entrance. The car door is provided with: a first plate (19) that is mounted so as to extend along the direction of movement of the car; and a second plate (21) that is attached to the first plate (19) at a position closer to the door opening side than the first plate in the direction of movement of the car, and that displaces so that the distance between the second plate and the first plate (19) becomes narrower when the car door is opened. The landing door is provided with: a first roller (29) that moves the landing door by being pressed by the first sheet material (19) or the second sheet material (21); and a second roller (30) that is attached to a latch (32) that locks the landing door, is more deformable than the first roller, has an outer diameter smaller than the distance between the first plate (19) and the second plate (21) when the car door is closed, and is pushed to the door opening side by the first plate (19) to unlock the latch, and is gripped between the first plate (19) and the second plate (21) to be elastically deformed when the car door and the landing door are in the open state.

Description

Door device of elevator

Technical Field

The present disclosure relates to door apparatuses of elevators.

Background

A conventional elevator is provided with a hoisting machine for moving a car in an upper portion of a hoistway. The traction machine has a drive sheave, a traction machine motor, and a traction machine brake. A suspension body is wound on the driving rope wheel, one end of the suspension body is connected with a lift car, and the other end is connected with a counterweight. The hoisting machine motor moves the car by rotating the drive sheave. The hoisting machine brake brakes the rotation of the drive sheave to stop the car. (for example, refer to patent document 1)

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2018-105109

Disclosure of Invention

Problems to be solved by the invention

In the above-described conventional elevator, the rotation of the drive sheave is braked by a hoisting machine brake to stop the car. When the car stops, the user takes the car. When an elevator is installed in a high-rise building or the like and the hoistway is long, even if the car is stopped by a hoisting machine brake, the user of the elevator may get in the car and the suspension body may repeatedly expand and contract. As a result, there is a problem in that the car swings longitudinally, which gives a user a sense of discomfort.

The present disclosure has been made to solve the above-described problems, and an object thereof is to suppress pitching of a car when a user of an elevator gets in the car.

Means for solving the problems

The door device of the elevator of the present disclosure comprises: a door of the car for opening and closing the entrance of the car; a first plate material provided to a door of the car and mounted so as to extend in a moving direction of the car; a second plate material provided to the door of the car and attached to a position closer to the door side than the first plate material along the moving direction of the car, the second plate material being displaced so that the distance between the second plate material and the first plate material becomes narrower when the door of the car is opened; a landing door for opening and closing a landing entrance; a first roller provided to a door of the landing and configured to be pressed by the first sheet material or the second sheet material to move the door of the landing; and a second roller provided on the door of the landing, mounted on a latch for locking the door of the landing, and being more easily deformed than the first roller, the second roller having an outer diameter smaller than a distance between the first plate and the second plate when the door of the car is closed, the second roller being pressed by the first plate to unlock the latch, and being gripped by the first plate and the second plate to be elastically deformed when the door of the car and the door of the landing are in an open state.

Effects of the invention

According to the present disclosure, it is possible to obtain a door device of an elevator capable of suppressing pitching of the car when a user of the elevator gets into the car.

Drawings

Fig. 1 is a side view of an elevator using the door device of the elevator according to embodiment 1.

Fig. 2 is a front view showing a door device of an elevator according to embodiment 1.

Fig. 3 is a front view of the door apparatus of the elevator according to embodiment 1 when the door apparatus performs a door opening operation.

Fig. 4 is a front view of the landing door of embodiment 1 as viewed from the hoistway side.

Fig. 5 is an enlarged front view of the interlock device according to embodiment 1.

Fig. 6 is an enlarged front view of the interlock device in the case where the lock of the landing door of embodiment 1 is released.

Fig. 7 is a side view of movable-side interlocking roller 30 in embodiment 1.

Fig. 8 is a graph showing a change with time in pitch of the car in the case where the door device of the elevator according to embodiment 1 is used.

Fig. 9 is a graph showing a change with time in pitch of the car in the case where the movable-side interlocking roller is changed in the door device of the elevator according to embodiment 1.

Fig. 10 is a front view showing another example of the door device of the elevator according to embodiment 1.

Detailed Description

Embodiment 1.

Fig. 1 is a side view of an elevator using the door device of the elevator according to embodiment 1. In the figure, a machine room 101 is provided in an upper portion of a hoistway 100. A hoisting machine 102, a deflector pulley 103, and an elevator control device 104 are provided in the machine room 101. The hoisting machine 102 includes a drive sheave 105, a hoisting machine motor (not shown) that rotates the drive sheave 105, and a hoisting machine brake (not shown) that brakes the rotation of the drive sheave 105.

A suspension 106 is wound around the drive sheave 105 and the deflector pulley 103. As the hanging body 106, a plurality of ropes or a plurality of belts are used. A car 1 is connected to a first end of the suspension 106. A counterweight 107 is connected to a second end of the suspension body 106.

The car 1 and the counterweight 107 are suspended in the hoistway 100 by the suspension 106, and are lifted and lowered in the hoistway 100 by the driving force of the hoisting machine 102. The elevator control device 104 controls the operation of the car 1 by controlling the hoisting machine 102.

A pair of car guide rails (not shown) for guiding the lifting of the car 1 and a pair of counterweight guide rails (not shown) for guiding the lifting of the counterweight 107 are provided in the hoistway 100.

The car 1 has a car frame 108 to which the suspension 106 is connected, and a car room 109 supported by the car frame 108. A pair of car doors 5 that open and close the car doorway by sliding horizontally in opposite directions are provided on the front surface of the car chamber 109.

A pair of landing doors 55 for opening and closing a landing entrance by horizontally sliding in directions opposite to each other are provided at each of the landing of the plurality of floors. The landing door 55 is opened and closed in association with the car door 5 when the car 1 stops.

Fig. 2 is a front view showing a door device of an elevator according to embodiment 1 of the present invention. Fig. 2 is a front view of the car 1 when viewed from the landing side. In fig. 2, a car 1 moving in a hoistway 100 is provided with a car doorway 2. A car door frame 3 disposed at an upper portion of the car doorway 2 is fixed to the car 1. A car side door rail 4 is fixed to a lower portion of the car door frame 3 along a lateral width direction of the car doorway 2.

A pair of car doors 5 for opening and closing the car doorway 2 are suspended from the car side door rail 4. Each car door 5 has a door panel 6 and a car door hanger 7 fixed to an upper portion of the door panel 6 and suspended from the car side door rail 4. The car door 5 can move in the lateral direction (horizontal direction) of the car doorway 2 while being guided by the car side door rail 4. The car doorway 2 is opened and closed by movement of each car door 5 in the lateral direction of the car doorway 2.

A door driving device 8 is fixed to the upper portion of the car door frame 3. The door driving device 8 has a door driving device body 9 including a motor and a driving pulley 10 rotated by a driving force of the door driving device body 9.

A first driven pulley 11 and a transmission pulley (not shown) that integrally rotate are coaxially provided at one end of the car door frame 3. A second driven sheave 12 is provided at the other end of the car door frame 3. An endless driving belt 13 is wound between the driving pulley 10 and the transmitting pulley, and an endless door belt 14 is wound between the first and second driven pulleys 11, 12. The first driven pulley 11 is rotated by the rotation of the driving pulley 10. The door strap 14 moves around by the rotation of the first driven pulley 11. The second driven pulley 12 is rotated by the circumferential movement of the door strap 14.

Each car door 5 is connected to the door belt 14 via connection fittings 15, 16. The coupling fitting 15 is attached to the car door hanger 7 of one car door 5, and the coupling fitting 16 is attached to the car door hanger 7 of the other car door 5. The car doors 5 are moved in opposite directions to each other by the surrounding movement of the door belt 14.

A fixed door blade 19 as a first plate material and a movable door blade 21 as a second plate material are mounted on the door panel 6. The fixed door vane 19 and the movable door vane 21 are disposed so as to extend along the moving direction (up-down direction) of the car 1. The fixed door blade 19 and the movable door blade 21 are provided at positions facing interlocking rollers 29 and 30 provided on a landing door 55 described later.

The fixed vane 19 is disposed closer to the door closing side than the movable vane 21 and interlocking rollers 29 and 30 described later. The movable vane 21 is disposed closer to the door opening side than the fixed vane 19 and the interlocking rollers 29 and 30. That is, the fixed door blade 19, the interlocking rollers 29, 30, and the movable door blade 21 are arranged in this order from the door closing side. A desired interval for the interlocking rollers 29, 30 to enter is set between the fixed door blade 19 and the movable door blade 21. Therefore, when the car 1 stops at a landing of a floor, the interlock rollers 29 and 30 enter between the fixed vane 19 and the movable vane 21.

The movable vane 21 is displaceable in the lateral direction (horizontal direction) of the car doorway 2 between a release position in which the distance from the fixed vane 19 is a predetermined distance and a holding position in which the distance from the fixed vane 19 is narrower than the release position. Fig. 2 is a view of the car door 5 when closed and the movable vane 21 is located at the release position. Fig. 3 is a view of the car door 5 when it is opened and the movable vane 21 is located at the holding position. The displacement of the movable vane 21 is performed in accordance with the rotation of the drive link 20.

When the movable door knife 21 is located at the holding position, the movable-side interlocking roller 30 is held between the fixed door knife 19 and the movable door knife 21. At this time, the fixed-side interlocking roller 29 is in contact with only the fixed door blade 19, and is not in contact with the movable door blade 21. The movable-side lock roller 30 is released from the grip between the fixed door blade 19 and the movable door blade 21 by displacing the movable door blade 21 to the release position.

The drive link 20 is rotatable about a first panel attachment shaft (link support shaft) 23 provided to the door panel 6. The follower link 22 is rotatable about a second panel mounting shaft 24 provided to the door panel 6.

The first panel mounting shaft 23 and the second panel mounting shaft 24 are disposed at a distance from each other in the up-down direction. The first panel mounting shaft 23 and the second panel mounting shaft 24 are disposed on the door opening side of the fixed door knife 19. The axes of the first panel mounting shaft 23 and the second panel mounting shaft 24 are perpendicular to the panel surface of the door panel 6.

The intermediate portion of the drive link 20 is mounted to the first panel mounting shaft 23. A door vane mounting shaft 25 is provided at one end portion of the drive link 20, and a link connecting shaft 26 is provided at the other end portion of the drive link 20. In this example, the driving link 20 is curved in shape to be bent at the position of the first panel mounting shaft 23.

The door knife mounting shaft 25 is located closer to the door side than the first panel mounting shaft 23, and the link connecting shaft 26 is located closer to the door side than the first panel mounting shaft 23. The vane mounting shaft 25 and the link connecting shaft 26 are disposed parallel to the first panel mounting shaft 23.

One end of the driven link 22 is mounted to the second panel mounting shaft 24. A vane mounting shaft 27 is provided at the other end of the driven link 22. The door vane mounting shaft 27 is disposed parallel to the second panel mounting shaft 24.

The movable vane 21 is rotatably attached to the vane attaching shafts 25 and 27, respectively. The movable vane 21 is disposed closer to the fixed vane 19 than the first and second panel mounting shafts 23, 24 by being mounted on the respective vane mounting shafts 25, 27. The distance between the respective vane mounting shafts 25, 27 is the same as the distance between the first and second panel mounting shafts 23, 24. In addition, the distance between the door knife mounting shaft 25 and the first panel mounting shaft 23 is the same as the distance between the door knife mounting shaft 27 and the second panel mounting shaft 24. Accordingly, the movable vane 21 is displaced in a state of being kept parallel to the fixed vane 19 by the rotation of the drive link 20.

As shown in fig. 3, when the movable vane 21 is located at the holding position, the direction of the straight line connecting the first panel mounting shaft 23 and the vane mounting shaft 25 is the same as the moving direction of the car door 5. Further, a stopper 28 for restricting the displacement of the movable vane 21 is fixed to the door panel 6. The stopper 28 receives the drive link 20 when the movable vane 21 reaches the holding position. Thereby, the movable door knife 21 is prevented from exceeding the holding position.

The drive link 20 is rotated by the self weight of the movable door knife 21 or by the action of a spring force, whereby the movable door knife 21 is displaced to the holding position. Further, the driving force of the gripping driving device 33 overcomes the self weight of the movable door knife 21 or the action of the spring force to rotate the driving link 20, thereby displacing the movable door knife 21 to the release position.

The gripping driving device 33 includes: a turning lever 34 rotatably attached to the car door hanger 7; a connecting rod 35 for interlocking the rotation lever 34 and the drive link 20; and a cam 36 fixed to the car door frame 3 for rotating the rotating lever 34 that moves together with the car door 5.

The rotating lever 34, the fixed vane 19, the driving link 20, the movable vane 21, and the driven link 22 are mounted to the common car door 5. The turning lever 34 is rotatable about a hanger mounting shaft 37 provided to the car door hanger 7. The hanger mounting shaft 37 is arranged parallel to the first panel mounting shaft 23. In this example, the shape and size of the turning lever 34 are the same as the shape and size of the drive link 20.

The intermediate portion of the turning lever 34 is mounted to a hanger mounting shaft 37. A roller shaft 38 is provided at one end of the rotation lever 34, and a lever connecting shaft 39 is provided at the other end of the rotation lever 34. The roller shaft 38 is located closer to the door than the hanger mounting shaft 37, and the lever connecting shaft 39 is located closer to the door than the hanger mounting shaft 37. The roller shafts 38 and the rod connecting shafts 39 are arranged parallel to the hanger mounting shafts 37, respectively.

One end of the connecting rod 35 is rotatably attached to the link connecting shaft 26, and the other end of the connecting rod 35 is rotatably attached to the lever connecting shaft 39. That is, the connecting rod 35 is rotatably connected to the drive link 20 via the link connecting shaft 26, and is rotatably connected to the rotating lever 34 via the lever connecting shaft 39. Thus, the rotation direction of the drive link 20 about the first panel mounting shaft 23 is the same as the rotation direction of the rotation lever 34 about the hanger mounting shaft 37.

The distance between the link connecting shaft 26 and the lever connecting shaft 39 is the same as the distance between the first panel mounting shaft 23 and the hanger mounting shaft 37. In addition, the distance between the link connecting shaft 26 and the first panel mounting shaft 23 is the same as the distance between the lever connecting shaft 39 and the hanger mounting shaft 37. Therefore, a parallelogram having four vertices of the first panel mounting shaft 23, the link connecting shaft 26, the rod connecting shaft 39, and the hanger mounting shaft 37 is formed between the drive link 20 and the rotating lever 34.

The distance between the roller shaft 38 and the hanger mounting shaft 37 is the same as the distance between the door knife mounting shaft 25 and the first panel mounting shaft 23. In addition, the distance between the roller shaft 38 and the door vane mounting shaft 25 is the same as the distance between the hanger mounting shaft 37 and the first panel mounting shaft 23. Therefore, a parallelogram having four vertexes of the first panel mounting shaft 23, the door vane mounting shaft 25, the roller shaft 38, and the hanger mounting shaft 37 is also formed between the drive link 20 and the rotating lever 34.

A guide roller 40 is rotatably attached to the roller shaft 38. The guide roller 40 can be brought into contact with the cam 36 by the movement of the car door 5 in the lateral direction of the car doorway 2. The guide roller 40 contacts the cam 36 only when the car door 5 is located within a predetermined movement range from a position where the car doorway 2 is closed to a position where the fixed vane 19 contacts the fixed-side interlocking roller 29.

As shown in fig. 3, when the guide roller 40 is away from the cam 36, the movable door knife 21 reaches the holding position by the action of its own weight or spring force. At this time, even if the car door 5 moves, the position of the movable vane 21 is maintained at the holding position.

When the guide roller 40 contacts the cam 36, the turning lever 34 turns in a direction to shift the movable vane 21 to the release position when the car door 5 moves in the door closing direction, and the turning lever 34 turns in a direction to shift the movable vane 21 to the holding position when the car door 5 moves in the door opening direction.

When the rotation lever 34 rotates in a direction to shift the movable vane 21 to the release position, the guide roller 40 is guided upward by the cam 36. When the rotation lever 34 rotates in a direction to shift the movable door knife 21 to the holding position, the guide roller 40 is guided downward by the cam 36.

Fig. 4 is a front view of the landing door 55 when viewed from the hoistway 100 side. Landing entrances and exits (not shown) are provided at the landing of each floor. A landing door frame 50 is fixed to the upper portion of the landing entrance. The landing door frame 50 is provided with a landing door rail 51 parallel to the width direction of the landing entrance.

A first landing door pulley 52 is provided at a first end in the longitudinal direction of the landing door frame 50. A second landing door pulley 53 is provided at a second end portion in the longitudinal direction of the landing door frame 50. An endless linking rope 54 is wound around the first and second landing door pulleys 52, 53.

Each landing door 55 has a landing door plate 56 and a landing door hanger 57 fixed to an upper portion of the landing door plate 56. Each landing door hanger 57 is provided with a plurality of landing door rollers 58 that move while rolling on the landing door rail 51. Each landing door 55 is suspended from the landing door rail 51, and is opened and closed along the landing door rail 51.

The first landing door 55a, which is one landing door 55, is connected to the link rope 54 via a connection fitting 59. The second landing door 55b as the other landing door 55 is connected to the link rope 54 via a connection fitting 60. When the link rope 54 circulates by the opening and closing operation of the first landing door 55a, the second landing door 55b moves in the opposite direction to the first landing door 55 a.

An interlock 18 is provided between the first landing door 55a and the landing door frame 50, the interlock 18 being for preventing the landing door 55 from being opened from the landing side when the car 1 is not stopped. The interlocking device 18 has a catch 31, an interlocking latch 32 as a latch, a fixed-side interlocking roller 29 as a first roller, and a movable-side interlocking roller 30 as a second roller.

Fig. 5 shows an enlarged front view of the interlock device 18 of fig. 4. The clasp 31 is fixed to the central portion of the landing door frame 50 in the longitudinal direction. The interlock latch 32 is rotatably mounted to a landing door hanger 57 of the first landing door 55 a. When the landing door 55 is in the fully closed state, the front end portion of the interlock latch 32 is engaged with the catch 31, thereby preventing the landing door 55 from moving in the opening direction.

The interlocking rollers 29, 30 are provided to the first landing door 55a. The fixed-side interlocking roller 29 is disposed coaxially with the rotation shaft of the interlocking latch 32. The fixed-side lock roller 29 is pressed toward the door opening side by the fixed vane 19 when the car door 5 is opened, thereby moving the landing door 55 to open the door. The fixed-side lock roller 29 is pressed by the movable vane 21 toward the door closing side when the car door 5 is closed, and moves the landing door 55 to close the door.

The movable-side interlocking roller 30 is attached to the interlocking latch 32 and rotates integrally with the interlocking latch 32. When the interlock latch 32 is hung on the catch 31, the movable-side interlock roller 30 is located above the fixed-side interlock roller 29 and closer to the door than the fixed-side interlock roller 29.

With this configuration, the fixed vane 19 provided to the car door 5 is brought into contact with the movable-side interlocking roller 30 in the middle of the car door 5 opening while the car 1 is stopped at a landing on a floor. Then, by pressing the movable-side interlocking roller 30 to the door opening side, the interlocking latch 32 is rotated to a position disengaged from the catch 31, and the locking of the landing door 55 is released.

The movable-side interlocking roller 30 has an outer diameter larger than that of the fixed-side interlocking roller 29. The movable-side interlocking roller 30 has a hardness lower than that of the fixed-side interlocking roller 29. In other words, the hardness of the fixed-side interlocking roller 29 is higher than that of the movable-side interlocking roller 30. For example, the fixed-side interlocking roller 29 has a hardness of 80 degrees, and the movable-side interlocking roller 30 has a hardness of 50 degrees.

Fig. 6 shows an enlarged front view of the interlock device 18 when the landing door 55 is unlocked. When the movable door knife 21 is displaced from the release position to the gripping position, the movable-side lock roller 30 is gripped between the fixed door knife 19 and the movable door knife 21. At this time, the outer diameter and hardness of the movable-side interlock roller 30 are determined such that the outer diameter of the movable-side interlock roller 30 in the lateral direction of the car doorway 2 is smaller than the outer diameter before being gripped and larger than the outer diameter of the fixed-side interlock roller 29. At this time, as shown in fig. 6, the outer diameter of the movable-side interlock roller 30 in the lateral width direction of the car doorway 2 is preferably slightly larger than the outer diameter of the fixed-side interlock roller 29. For example, the outer diameter of the movable-side interlock roller 30 in the lateral width direction of the car doorway 2 is 5mm larger than the outer diameter of the fixed-side interlock roller 29.

As a material for fixing the side interlocking roller 29, for example, a material having high durability such as nitrile rubber, which is not broken even when a load such as a traveling resistance or an inertial force is applied due to the door opening of the landing door 55, is preferable.

Fig. 7 is a side view of the movable-side interlocking roller 30. As shown in fig. 7, it is preferable that the movable side interlocking roller 30 has fine convex portions 30a or concave portions 30b on the surface that contacts the fixed door vane 19 and the movable door vane 21.

Next, the operation of the elevator door device configured as described above will be described. In the following description, the car door 5 and the landing door 55 are referred to as doors.

When the door is closed, the movable door knife 21 is held at the release position in a state where the guide roller 40 is in contact with the cam 36. In this case, the fixed door blade 19 and the movable door blade 21 are disposed at positions apart from the interlock device 18 in the lateral direction of the car doorway 2. At this time, the front end portion of the interlock latch 32 is engaged with the catch 31, and thus the landing door 55 is locked.

When the car 1 stops at a landing on a floor, the car door 5 is moved in the door opening direction by the driving force of the door driving device 8 at the time of the door opening operation, and the fixed vane 19 contacts the movable-side interlocking roller 30, and then the movable-side interlocking roller 30 is displaced from the forward position to the backward position while pressing the movable-side interlocking roller 30. Thereby, the front end portion of the interlock latch 32 is disengaged from the catch 31, and the landing door 55 is unlocked.

At this time, the guide roller 40 is guided downward while contacting the cam 36 in accordance with the movement of the car door 5 in the door opening direction. Thereby, the rotation lever 34 and the drive link 20 rotate in a direction to displace the connecting rod 35 upward, and the movable vane 21 is displaced from the release position to the gripping position. At this time, the rotation lever 34 and the driving link 20 rotate in the same direction.

When the movable-side interlocking roller 30 reaches the retracted position, the fixed vane 19 contacts the fixed-side interlocking roller 29. Further, the movable door knife 21 reaches the holding position. Thereby, the movable-side lock roller 30 is gripped between the fixed door vane 19 and the movable door vane 21. At this time, the guide roller 40 is separated from the cam 36.

Then, with the movable-side lock roller 30 gripped between the fixed vane 19 and the movable vane 21, the fixed-side lock roller 29 is pressed by the fixed vane 19 toward the door opening side, whereby the car door 5 moves in the door opening direction together with the landing door 55. At this time, a load such as a traveling resistance or an inertial force generated by opening the landing door 55 is applied to the fixed-side interlocking roller 29. When the door moves to a fully opened state, the door opening operation is completed.

When the door is in the fully opened state, the movable side lock roller 30 is gripped between the fixed door blade 19 and the movable door blade 21 and elastically deformed. That is, the movable-side lock roller 30 receives a force pressing in the horizontal direction from the fixed door blade 19 and the movable door blade 21. At this time, a force is generated from the movable-side interlocking roller 30 to push back the fixed door vane 19 and the movable door vane 21. The pushing back force is in particular a vertical resistance. The vertical resistance includes a rebound force of the movable-side interlocking roller 30 to return to the original circular shape.

When a user of the elevator gets into the car 1, the suspension 106 connected to the car 1 extends in the moving direction of the car 1, whereby the car 1 moves downward. Then, the extended rope is to be contracted, and the car 1 moves upward. That is, the user gets into the car 1 to generate a pitch of the car 1.

At this time, since vertical resistance is generated from the movable side interlocking roller 30 to the fixed vane 19 and the movable vane 21, friction is generated in a direction opposite to the vertical swing of the car 1. Specifically, friction force is generated upward when the car 1 moves downward, and friction force is generated downward when the car 1 moves upward. In this way, by generating friction in the direction opposite to the moving direction of the car 1, pitching of the car 1 can be suppressed.

The movable-side lock roller 30 has fine convex portions 30a or concave portions 30b on its surface. Therefore, the convex portion 30a or the concave portion 30b of the movable-side lock roller 30 engages with fine irregularities (not shown) on the surfaces of the fixed vane 19 and the movable vane 21, and the contact surface area increases, whereby the pitch of the car 1 can be further suppressed.

Fig. 8 and 9 show changes with time in pitch of the car 1 when the user gets in the car 1. The vertical axis represents the displacement of the car 1in the up-down direction, and the horizontal axis represents time. The displacement of 0mm is the position where the car 1 stops at the floor, and the user is not in the car 1. If the displacement is positive, this indicates that the car 1 moves upward, and if the displacement is negative, this indicates that the car 1 moves downward. At a time of 1 second, the user takes in the car 1.

The measurement in fig. 8 is performed using embodiment 1. The measurement of fig. 9 is a case where the movable-side lock roller 30 of embodiment 1 is modified. Specifically, the hardness of the movable-side interlocking roller 30 is changed to be higher or the outer diameter is smaller. By this modification, the vertical resistance generated in the direction of the fixed vane 19 and the movable vane 21 from the movable-side lock roller 30 becomes small.

When the measurements of fig. 8 and 9 are compared, the displacement values hardly show a difference between 1 and 2 seconds, but gradually show a difference from the displacement values after 2 seconds. Moreover, the waveform of fig. 8 is fully converged when 5 seconds elapse. On the other hand, the waveform of fig. 9 is fully converged when 8 seconds elapse. That is, when embodiment 1 is used, the pitch of the car 1 converges relatively quickly.

In the case of embodiment 1, since friction is generated in the direction opposite to the moving direction of the car 1, pitching of the car 1 can be suppressed in advance. On the other hand, when the hardness of the movable-side interlocking roller 30 is changed to be high or the outer diameter is changed to be small, the movable-side interlocking roller 30 is gripped between the fixed door blade 19 and the movable door blade 21 when the door is in the fully opened state, but the vertical resistance generated from the movable-side interlocking roller 30 in the directions of the fixed door blade 19 and the movable door blade 21 becomes small. When the vertical resistance is reduced, the frictional force generated in the direction opposite to the moving direction when the car 1 moves in the up-down direction is reduced. Therefore, the pitch of the car 1 cannot be suppressed by the frictional force.

In the door closing operation, the fixed-side lock roller 29 is pressed by the movable vane 21 toward the door closing side in a state where the movable-side lock roller 30 is held between the fixed vane 19 and the movable vane 21, and thereby the landing door 55 moves in the door closing direction together with the car door 5. After that, when the landing door 55 reaches a position closing the landing entrance, the guide roller 40 comes into contact with the cam 36, and the fixed door knife 19 is disengaged from the fixed-side interlocking roller 29.

Thereafter, the car door 5 is further moved in the door closing direction, whereby the guide roller 40 is displaced upward by the guide of the cam 36, and the turning lever 34 and the drive link 20 are turned in a direction to displace the coupling rod 35 downward. Thereby, the movable vane 21 is displaced from the gripping position to the release position. At this time, the rotation lever 34 and the driving link 20 rotate in the same direction. Thereafter, the fixed vane 19 is separated from the movable-side interlocking roller 30, and the car door 5 is further moved in the door closing direction, whereby the door closing operation is completed.

In the door apparatus of the elevator according to embodiment 1, the movable-side lock roller 30 has a lower hardness than the fixed-side lock roller 29. Therefore, when the door is in the fully opened state, the movable-side lock roller 30 is gripped between the fixed door blade 19 and the movable door blade 21 and elastically deformed. At this time, since the vertical resistance force pushing back the fixed vane 19 and the movable vane 21 is generated from the movable-side interlocking roller 30, when the car 1 swings in the up-down direction, a friction force is generated in the direction opposite to the moving direction of the car 1. By this frictional force, pitching of the car 1 can be suppressed. The fixed-side interlocking roller 29 has a hardness higher than that of the movable-side interlocking roller 30. Therefore, the load generated by opening the landing door 55 can be endured for a long time. Therefore, the door device of the elevator according to embodiment 1 can suppress pitching of the car 1 while having high durability. As a result, the frequency of component replacement of the interlocking rollers 29, 30 can be reduced, and discomfort to the elevator user can be suppressed.

Further, in the door device of the elevator according to embodiment 1, the outer diameter of the movable-side interlocking roller 30 is larger than the outer diameter of the fixed-side interlocking roller 29 when the door is closed. Therefore, when the door is opened, the fixed door blade 19 and the movable door blade 21 can grip only the movable side interlocking roller 30. Further, since the load caused by the pitch suppression of the car 1 is not applied to the fixed-side interlocking roller 29, breakage of the fixed-side interlocking roller 29 can be prevented.

In the door device of the elevator according to embodiment 1, the fixed-side interlocking roller 29 has a hardness higher than that of the movable-side interlocking roller 30. Therefore, breakage of the fixed-side interlocking roller 29 due to a load such as a traveling resistance or an inertial force generated by opening the landing door 55 can be prevented.

Further, in the door apparatus of the elevator according to embodiment 1, the movable-side lock roller 30 and the lock latch 32 are integrally rotated. Therefore, the movable-side interlocking roller 30 can rotate rearward more than the retracted position. According to this structure, even if the fixed door blade 19 presses the fixed-side interlocking roller 29 and the movable-side interlocking roller 30 when the landing door 55 is opened, the movable-side interlocking roller 30 rotates further than the retracted position, and therefore no load is applied to the movable-side interlocking roller 30. Similarly, when the landing door 55 is closed, no load is applied to the movable-side interlocking roller 30. That is, the load generated by opening and closing the landing door 55 can be borne by the fixed-side interlocking roller 29.

In the door device of the elevator according to embodiment 1, the movable-side interlock roller 30 has a slightly larger outer diameter in the lateral width direction of the car entrance 2 than the fixed-side interlock roller 29 when the door is opened. Therefore, the load caused by the pitch suppression of the car 1 when the door is in the fully opened state can be borne by the movable-side interlocking roller 30. Further, the movable-side lock roller 30 can be prevented from moving away from the fixed door blade 19 or the movable door blade 21 during opening and closing of the landing door 55. Therefore, damage to the interlock latch 32 due to erroneous rotation of the movable-side interlock roller 30 can be prevented.

Further, in the door device of the elevator according to embodiment 1, fine convex portions 30a and concave portions 30b are provided on the surface of the movable-side lock roller 30. Therefore, the convex portion 30a or the concave portion 30b of the movable-side lock roller 30 engages with the fine concave-convex portions of the surfaces of the fixed vane 19 and the movable vane 21, and the contact surface area increases, whereby the pitch of the car 1 can be further suppressed.

In the above embodiment, the example was described in which the outer diameter of the movable-side interlocking roller 30 is larger than the outer diameter of the fixed-side interlocking roller 29, but a configuration may be used in which the outer diameter of the movable-side interlocking roller 30 is the same as the outer diameter of the fixed-side interlocking roller 29 or smaller than the outer diameter of the fixed-side interlocking roller 29. In this case, it is preferable to change the cross sections of the fixed vane 19 and the movable vane 21 from a straight shape to a Z shape as shown in fig. 10.

In the above-described embodiment, the example was described in which the movable-side interlocking roller 30 is gripped between the fixed vane 19 and the movable vane 21 and elastically deformed due to the low hardness of the movable-side interlocking roller 30, but the movable-side interlocking roller 30 may be formed in a shape that is easily elastically deformed, for example, the width of the movable-side interlocking roller 30 may be made shorter than the width of the fixed-side interlocking roller 29. In this case, the fixed-side interlocking roller 29 and the movable-side interlocking roller 30 can be made of the same hardness material.

The cross sections of the fixed blade 19 and the movable blade 21 are not limited to rectangular, and may be any shape that can hold the movable-side interlocking roller 30 from the horizontal direction. In addition, the horizontal direction may not be completely horizontal.

Even in the door device of the elevator having such a structure, when the door is in the fully opened state, the movable side lock roller 30 is gripped between the fixed door blade 19 and the movable door blade 21 and elastically deformed. At this time, since the vertical resistance force pushing back the fixed vane 19 and the movable vane 21 is generated from the movable-side interlocking roller 30, when the car 1 swings in the up-down direction, a friction force is generated in the direction opposite to the moving direction of the car 1. By this frictional force, pitching of the car 1 can be suppressed. The fixed-side interlocking roller 29 has a hardness higher than that of the movable-side interlocking roller 30. Therefore, the load generated by opening the landing door 55 can be endured for a long time. Therefore, the door device of the elevator according to embodiment 1 can suppress pitching of the car 1 while having high durability. As a result, the frequency of component replacement of the interlocking rollers 29, 30 can be reduced, and discomfort to the elevator user can be suppressed.

Description of the reference numerals

1: Car, 2: car doorway, 5: car door, 19: fixing the door knife and 21: movable door knife, 55: landing door, 29: fixed side interlocking roller, 30: movable side interlocking roller, 30a: convex part, 30b: recess, 31: clasp, 32: an interlocking latch.

Claims (5)

1. An elevator door device, characterized in that the elevator door device comprises:

A door of the car for opening and closing the entrance of the car;

a first plate material provided to a door of the car and mounted so as to extend in a moving direction of the car;

a second plate material provided to a door of the car and attached to a position closer to a door opening side than the first plate material so as to extend in a moving direction of the car, the second plate material being displaced so that a distance between the second plate material and the first plate material becomes narrower when the door of the car is opened;

A landing door for opening and closing a landing entrance;

A first roller provided to a door of the landing and configured to be pressed by the first sheet material or the second sheet material to move the door of the landing; and

And a second roller provided on the door of the landing, mounted on a latch for locking the door of the landing, and being more deformable than the first roller, the second roller having an outer diameter smaller than a distance between the first plate and the second plate when the door of the car is closed, the second roller being pressed by the first plate to the door opening side to unlock the latch, and being gripped by the first plate and the second plate to be elastically deformed when the door of the car and the door of the landing are in an open state.

2. Door arrangement of an elevator according to claim 1, characterized in that,

The second roller has a lower hardness than the first roller.

3. Door arrangement of an elevator according to claim 1 or 2, characterized in that,

The second roller has an outer diameter greater than an outer diameter of the first roller when the door of the car is closed.

4. Door arrangement of an elevator according to any of claims 1-3, characterized in that,

The second plate moves in the transverse width direction of the car doorway,

When the door of the car and the door of the landing are in an open state, the outer diameter of the second roller gripped by the first plate material and the second plate material in the lateral width direction of the car entrance is larger than the outer diameter of the first roller.

5. Door arrangement of an elevator according to any of claims 1-4, characterized in that,

The second roller has a convex portion or a concave portion on a surface thereof.