WO2007023549A1

WO2007023549A1 - Door device for elevator

Info

Publication number: WO2007023549A1
Application number: PCT/JP2005/015433
Authority: WO
Inventors: Takaharu Ueda; Hiroshi Kigawa
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2005-08-25
Filing date: 2005-08-25
Publication date: 2007-03-01
Also published as: EP1918241A1; CN101048333A; EP1918241A4; CN100569623C; KR20070084379A; JPWO2007023549A1; KR100940420B1

Abstract

An elevator door has a landing door and a car door. The car door has a car door displaceable between a paralleled-door position in which the car door is parallel to the landing door and a displaced-door position in which the car door is more on the door opening side than the paralleled-door position by a predetermined distance relative to the landing door. When the car door is in the displaced-door position, the landing door and the car door are moved together while being engaged with each other. An operation member is placed between the car door and the landing door. The operation member is displaceable between a projected position in which the projection member is projected from an end section on the door closing side of the elevator door toward a door closing direction and a receded position in which the operation member is positioned more on the door opening side than the projected position and is received between the car door and the landing door. When an elevator doorway is totally closed by the landing door, the car door is displaced between the paralleled-door position and the displaced-door position. A displacement device displaces the operation member to the projected position when the car door is at the paralleled-door position and displaces to the receded position when the car door is at the displaced-door position.

Description

Specification

Elevator door equipment

Technical field

TECHNICAL FIELD [0001] The present invention relates to an elevator door device that opens and closes an elevator doorway that communicates the inside of a car with a landing.

Background art

[0002] In a conventional elevator door device, in order to detect that a foreign object has been caught between a pair of doors, an operating piece that can be displaced with respect to the door is provided at the door closing side end. ing. The operating piece moves with the door while protruding from the door closing side end of the door. When the operating piece comes into contact with a foreign object and is displaced with respect to the door, the moving direction of the door is reversed from the door closing direction to the door opening direction (see Patent Document 1).

Patent Document 1: Japanese Patent Laid-Open No. 5-301692

Disclosure of the invention

Problems to be solved by the invention

[0004] In such a conventional elevator door device, when the door is moved, the operating piece is left protruding, so that, for example, a cart easily hits the operating piece. Actuator is easily damaged. For this reason, the rigidity and weight of the operating piece are increased in order to prevent the operating piece from being damaged. Therefore, if the foreign object is easy to bend and light, such as a string, the foreign object cannot easily be detected even if the foreign object contacts the operating piece. There is a risk that.

[0005] The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator door device that can detect foreign matter more reliably with a simple configuration.

Means for solving the problem

[0006] An elevator door device according to the present invention includes a landing door, a door juxtaposition position that is juxtaposed with the landing door, and a position that is a predetermined distance from the door juxtaposition side with respect to the landing door. The car door is displaceable between the standing door and the car door. In some cases, the landing door and the car door are moved while being engaged with each other, and are installed between the elevator door that opens and closes the entrance of the elevator, the car door and the landing door, and from the door closing side end of the elevator door. An operating piece projecting in the door closing direction, an operating piece which is located on the door opening side from the projecting position and is displaceable between a retracted position accommodated between the force door and the landing door, and the car door Displacement device that displaces the operating piece according to the displacement with respect to the landing door is provided, and the car door is displaced between the door juxtaposition position and the standing position when the landing door is fully closed. The displacement device displaces the operating piece to the protruding position when the car door is in the side-by-side position, and displaces the operating piece to the retracted position when the car door is standing without the door. Come on!

Brief Description of Drawings

FIG. 1 is a partial front view showing a door device for an elevator according to Embodiment 1 of the present invention.

2 is a cross-sectional view taken along the line Π-Π in FIG.

FIG. 3 is a partial front view showing the door device of the elevator when the doorway in FIG. 1 is fully closed.

4 is a cross-sectional view taken along line IV-IV in FIG.

FIG. 5 is a graph showing the relationship between the speed of the elevator door and the time until the doorway in FIG. 1 is fully open and fully closed.

6A is a plan view showing the elevator door device when the speed of the elevator door is greatly reduced in the deceleration section of FIG. 5. FIG.

FIG. 6B is a plan view showing the door device for the elevator when the speed of the elevator door is gradually decreasing in the deceleration section of FIG.

FIG. 6C is a plan view showing the elevator door device when the speed of the elevator door is 0 in the deceleration section of FIG.

圆 7] is an enlarged view of a main part showing an elevator door device according to Embodiment 2 of the present invention. 圆 8] The state when the operating piece side link member of FIG. 7 is rotated with respect to the cam plate side link member. It is a principal part enlarged view shown. FIG. 9 is a partial front view showing an elevator door device according to Embodiment 3 of the present invention;

10 is a cross-sectional view taken along line XX in FIG.

FIG. 11 is a partial front view showing the door device of the elevator when the doorway in FIG. 9 is fully closed.

12 is a cross-sectional view taken along line XII-XII in FIG.

FIG. 13 is a partial front view showing an elevator door device according to Embodiment 4 of the present invention.

14 is a cross-sectional view taken along line XIV-XIV in FIG.

FIG. 15 is a cross-sectional view of an essential part showing the door device of the elevator when the doorway in FIG. 14 is fully closed.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1.

FIG. 1 is a partial front view showing an elevator door device according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along line Π-Π in FIG. FIG. 3 is a partial front view showing the elevator door device when the doorway 1 of FIG. 1 is fully closed, and FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. FIG. 1 is a view showing a state where the doorway 1 is in a half-open state. In the figure, a car-side hanger case 2 fixed to a car and a landing-side hanger case (not shown) fixed to a landing-side wall surface are provided at the upper part of the elevator entrance 1. The car-side hanger case 2 is provided with a car-side door rail 3 that extends in the horizontal direction (the direction of the front door 1), and the landing-side hanger case is provided with a landing-side door rail (not shown) that extends in the horizontal direction. And

[0009] A pair of car doors 4 for opening and closing the entrance 1 is suspended from the car side door rail 3. A plurality of (two in this example) hanger rollers 5 mounted on the car-side door rail 3 are provided at the upper part of each car door 4. Each car door 4 is moved along the car-side door rail 3 by the driving force of a door driving device (not shown) mounted on the car. Each hanger roller 5 is rolled on the car-side door rail 3 as the car door 4 moves. [0010] A pair of landing doors 7 that open and close the entrance 1 are suspended from the landing-side door rails. Each landing door 7 is movable along the landing-side door rail. Each landing door 7 is always urged in the direction of closing the doorway 1 (door closing direction) by a weight or a spring (not shown).

[0011] Below the entrance 1 are provided a car sill 6 fixed to the car and a landing sill 8 fixed to the wall on the landing side. The car sill 6 is provided with a guide groove (not shown) into which the lower part of each car door 4 is inserted. The landing threshold 8 is provided with a guide groove (not shown) into which the lower part of each landing door 7 is inserted.

[0012] The car door 4 and the landing door 7 are arranged in parallel to each other in the depth direction of the car (FIGS. 2 and 4). Between the car door 4 and the landing door 7, there is provided an engaging device 11 for engaging the iron door 4 and the landing door 7 with each other in the entrance direction of the doorway 1. The engaging device 11 includes an engaging roller 10 provided on the landing door 7 and a vane 9 fixed to the force door 4 and engageable with the engaging roller 10. The vane 9 is a plate-like member extending in the vertical direction. The engagement roller 10 is a roller that can rotate around a horizontal axis that extends in the depth direction of the force. Further, the engagement roller 10 is disposed on the door opening side of the vane 9.

[0013] In the depth direction of the force, the force door 4 has a door juxtaposition position (Fig. 3) that is juxtaposed with the landing door 7 and a predetermined position with respect to the landing door 7 than the door juxtaposition position. It can be displaced by the distance A from the door displacement position (Fig. 1) shifted to the door open side. The vane 9 is engaged with the engaging roller 10 when the car door 4 is not in the drained position. Also, the door closing side end 4a of the force door 4 is located at the same position as the door closing side end 7a of the landing door 7 in the depth direction of the force door when the car door 4 is in the door juxtaposition position. Be placed.

The elevator door that opens and closes the doorway 1 has car doors 4 and landing doors 7.

When the elevator door is fully closed at the entrance 1, the door closing side ends 4 a of the force doors 4 abut each other at the fully closed door end position O located at the center of the entrance 1, and each landing door The door closing side ends 7a of 7 are brought into contact with each other (Fig. 3).

[0015] When each landing door 7 fully closes the doorway 1, the force door 4 can be displaced between the door juxtaposition position and the door displacement position with respect to the landing door 7 (see FIG. 3 and Figure 4). Also, When the landing door 7 is engaged with the car door 4, the movement of the car door 4 in the door opening direction causes the landing door 7 to resist the urging in the door closing direction by a weight or the like. 4 Moved in the door opening direction. Further, when the landing door 7 is engaged with the car door 4, the landing door 7 is moved to the door closing direction by a weight or the like due to the movement of the car door 4 in the door closing direction. The door is moved in the closing direction according to the movement of the force door 4 without disengaging.

[0016] Between the car door 4 and the landing door 7, there is an operating piece 12 that can be displaced with respect to the elevator door, and a displacement device that displaces the operating piece 12 according to the displacement of the force door 4 with respect to the landing door 7. 21 and are provided.

[0017] The operating piece 12 is a lightweight plate-like member extending in the height direction of the elevator door. An upper mounting portion 12b and a lower mounting portion 12c are provided on the upper and lower portions of the operating piece 12, respectively, protruding toward the door opening side.

[0018] The operating piece 12 is located at the door closing side end force of the elevator door in the door closing direction (FIGS. 3 and 4), and on the door opening side from the protruding position. It can be displaced with respect to the retracted position (Figs. 1 and 2) accommodated between the landing doors 7. That is, the door closing side end 12a of the operating piece 12 is either from the door closing side end 4a of the force door 4 or the door closing side end 7a of the landing door 7 when the operating piece 12 is in the protruding position. Is located on the door closing side, and when the operating piece 12 is in the retracted position, the door is larger than at least either of the door closing side end 4a of the force door 4 and the door closing side end 7a of the landing door 7. It is located on the open side. In this example, when the operating piece 12 is in the protruding position, the operating piece 12 protrudes from the door closing side end of the elevator door by the protruding amount C (FIG. 4).

[0019] The car door 4 is provided with an upper rotating shaft 13 and a lower rotating shaft 14 that are disposed at a distance from each other in the height direction of the elevator door. The operating piece 12 is connected via an upper rotating link (rotating member) 15 that can rotate about the upper rotating shaft 13 and a lower rotating link 16 that can rotate about the lower rotating shaft 14. It is supported by the force door 4. An upper mounting portion 12b is rotatably attached to one end portion of the upper rotating link 15 by a pin 15a, and a lower mounting portion 12c is rotatably attached to one end portion of the lower rotating link 16 by a pin 16a. It is. The actuating piece 12 is rotated by each of the upper rotation link 15 and the lower rotation link 16. By this, it is displaced between the protruding position and the retracted position. The car door 4 is provided with a stopper 20 for holding the operating piece 12 in the protruding position by contacting the upper rotating link 15! /.

A cam roller 17 is provided at the other end of the upper rotation link 15. The landing door 7 is provided with a cam plate 18 for rotating the upper rotation link 15 while being in contact with the cam roller 17. The cam plate 18 is disposed on the door opening side of the cam roller 17. The displacement device 21 has an upper rotation link 15, a cam roller 17, and a cam plate 18.

The operating piece 12 is displaced to the protruding position when the force door 4 is in the door juxtaposition position (FIG. 3).

When the operating piece 12 is in the protruding position, the cam roller 17 is separated from the cam plate 18 by a distance B, and the upper rotating link 15 is in contact with the stopper 20. The interval B is smaller than the interval A between the vane 9 and the engagement port 10.

[0022] The operating piece 12 is displaced to the retracted position when the force door 4 is in the door displacement position (FIG. 1).

When the operating piece 12 is in the retracted position, the rotation of the upper rotation link 15 is held while the cam roller 17 is pressed against the cam plate 18. That is, the cam plate 18 receives the rotation of the upper rotation link 15 caused by the weight of the operation piece 12, so that the position of the operation piece 12 is maintained in the retracted position.

[0023] When the force door 4 is displaced to the standing position without the door side-by-side position, the cam roller 17 contacts the cam plate 18 until the vane 9 is engaged with the engagement roller 10. After this, when the car door 4 is not moved; and when it is displaced toward the standing position, the upper rotating link 15 is rotated while the cam roller 17 is pushed by the cam plate 18, and the vane 9 is engaged with the engaging roller 10. Is engaged. As a result, the operating piece 12 is displaced to the retracted position.

[0024] When the force door 4 does not move and the standing force is also displaced to the door side-by-side position, the cam roller 17 is in contact with the cam plate 18 due to the weight of the operating piece 12, and the upper rotating link 15 is the stopper 20 It is turned to the side. Thereafter, when the upper rotation link 15 comes into contact with the stagger 20, the rotation of the upper rotation link 15 is stopped and the operating piece 12 is held at the protruding position. Thereafter, the cam roller 17 force is released from the S cam plate 18, and the force door 4 is displaced to the door side-by-side position.

The car door 4 is provided with a microswitch (position detection device) 19 for detecting whether or not the operating piece 12 is displaced to the protruding position. In this example, microswitch 19 is The presence or absence of displacement of the operating piece 12 to the protruding position is detected by the presence or absence of contact with the part rotation link 16. Further, the entrance / exit 1 is provided with a fully-closed detection sensor (not shown) for detecting whether or not the force of the entrance / exit 1 being fully closed.

[0026] Information from the fully-closed detection sensor and the microswitch 19 is sent to a control device that controls the operation of the elevator. The control device controls the operation of the elevator based on the information from the fully-closed detection sensor and the micro switch 19! /. That is, the control device controls the operation of the elevator so that the force can be moved only when the elevator door fully closes the entrance 1 and the operating piece 12 is in the protruding position. In addition, the control device moves the elevator door in the door opening direction when the elevator door fully closes the entrance 1 and the position of the operating piece 12 is also out of the protruding position force before the movement of the car is started. It ’s like that. Furthermore, the control device stops the movement of the force when the elevator door fully closes the entrance 1 and the position of the operating piece 12 is released from the protruding position force after the movement of the force is started. RU

FIG. 5 is a graph showing the relationship between the speed of the elevator dor and the time until the state of the doorway 1 in FIG. 1 becomes the fully open state force fully closed state. As shown in the figure, the speed of the elevator door rises in the ascending zone until it reaches the fully closed state of the doorway 1 and becomes constant in the constant velocity zone and then decreases in the deceleration zone. .

[0028] In the ascending section, the elevator door speed rises slowly after gradually increasing from zero. In the deceleration zone, the speed of the elevator door drops slowly after the speed in the constant speed zone and then becomes 0 when the doorway 1 is fully closed. In the deceleration zone, when the speed change is large, the range below the speed of the elevator door when the force is switched slowly is the low speed range. In this example, the low speed range is set to 20 mmZs or less. When the speed of the elevator door is in the low speed range, each landing door 7 fully closes the entrance 1 and the force door 4 can be displaced with respect to the landing door 7.

Next, the operation will be described. FIG. 6A is a plan view showing the elevator door device when the speed of the elevator door is greatly reduced (state at time tl) in the deceleration section of FIG. FIG. 6B is a plan view showing the elevator door device when the speed of the elevator door is slowly decreasing in the deceleration section of FIG. 5 (state at time t2). is there. Further, FIG. 6C is a plan view showing the elevator door device when the speed of the elevator door is 0 (state at time t3) in the deceleration section of FIG.

[0030] If the force door 4 is moved in the door closing direction by the driving force of the door driving device from the state where the doorway 1 is fully opened, the landing door 7 is also closed while being engaged with the force door 4. Moved in the direction.

[0031] For example, when the speed of the elevator door is greatly reduced in the deceleration zone, the force door 4 is displaced without the door and the vane 9 is engaged with the engagement roller 10 as shown in FIG. 6A. It has been. At this time, the operating piece 12 is held in the retracted position while the cam roller 17 is pushed by the cam plate 18.

[0032] When the speed of the elevator doors falls within the low speed range and each landing door 7 fully closes the entrance 1 as shown in FIG. 6B, the movement of the landing door 7 in the door closing direction is stopped and the force door is stopped. Only the movement of 4 in the door closing direction is continued by the driving force of the door drive. That is, the car door 4 is displaced with respect to the landing door 7 with the door displacement position force also directed to the door juxtaposition position. At this time, the vane 9 and the engaging roller 10 are disengaged. Further, the upper rotation link 15 is rotated while the cam roller 17 is in contact with the cam plate 18, and the operating piece 12 is displaced by the retreat position force toward the projecting position.

[0033] After this, when the force door 4 continues to move in the door closing direction, the upper rotary link 15 contacts the stopper 20 and the upper rotary link 15 stops rotating. Thereafter, the car door 4 continues to move in the door closing direction, and the cam roller 17 is separated from the cam plate 18. After this, the force dowel 4 reaches the door side-by-side position, and the door 1 is fully closed by the elevator door (Fig. 6C).

[0034] In a state where the doorway 1 is fully closed, it is detected that the lower rotating link 16 is in contact with the microswitch 19 and the operating piece 12 has reached the protruding position.

[0035] Thereafter, when the control device confirms that the operating piece 12 is displaced to the protruding position and the fully closed operation of the doorway 1 is completed, the force can be moved.

[0036] When the elevator door is opened, the force door 4 is engaged with the landing door 7 and the operating piece 12 is displaced to the protruding position force retracted position by the reverse operation.

[0037] Next, an operation when a foreign object such as a string is sandwiched between elevator doors will be described. When the elevator door fully closes the entrance / exit 1, there is a foreign object between the elevator doors. If it does, the displacement to the protrusion position of the action | operation piece 12 will be prevented by the foreign material. As a result, the micro switch 19 does not operate, and the control device detects that the operating piece 12 is out of the protruding position force. Thereby, the elevator door is opened.

[0038] Even when the movement of the force is started while the foreign object is sandwiched between the elevator doors, the operating piece 12 is moved to the protruding position by applying tension to the foreign object due to the movement of the force. Deviate from. As a result, it is detected by the control device that the lower rotary link 16 is separated from the microswitch 19 and the operating piece 12 is also out of the protruding position force. This stops the movement of the force.

In such an elevator door device, when the landing door 7 fully closes the entrance 1, the force door 4 is displaced between the door juxtaposition position and the door shift position. The working piece 12 is displaced to the protruding position when the force door 4 is in the side-by-side position, and the car door 4 is not displaced; ί! ^ Is displaced to the retracted position when standing. Therefore, normally, the working piece 12 is accommodated between the force dowel 4 and the landing door 7, and the door closing side end of the elevator door is just before the elevator door fully closes the entrance 1 The force can also cause the operating piece 12 to protrude. Thereby, it is possible to prevent the carriage or the like from colliding with the operating piece 12, and the strength of the operating piece 12 can be reduced to make the operating piece 12 lightweight. Therefore, for example, even a foreign object such as a string that is light and easily bent can be detected more reliably with a simple configuration.

[0040] Further, the displacement device 21 for displacing the operating piece 12 includes a cam plate 18 provided on the landing door 7 and a cam plate 18 that is pushed by the cam plate 18 in accordance with the displacement of the force door 4 relative to the landing door 7. Since the upper pivot link 15 pivoted with respect to the car door 4 is provided, the displacement of the operating piece 12 with respect to the elevator door and the displacement of the force door 4 with respect to the landing door 7 can be easily configured. It can be linked.

[0041] Further, the presence or absence of displacement of the operating piece 12 to the projecting position is detected by the microswitch 19, and the operation of the elevator is controlled based on the information from the microswitch 19. The occurrence of malfunction of the elevator door can be suppressed.

[0042] Further, the control device opens the elevator door when the elevator door fully closes the entrance 1 and the position of the operating piece 12 is also out of the protruding position force before the movement of the car is started. For example, it is easy to bend a string or the like! / If it is sandwiched between elevator doors while straddling the power cage, it is possible to prevent the car from starting to move.

[0043] Further, the control device stops the movement of the force when the elevator door fully closes the entrance 1 and the position of the working piece 12 also deviates from the protruding position force after the movement of the car is started. Therefore, even when a foreign object such as a string is bent between the landing and the car and the movement of the force is started, the displacement of the operating piece 12 immediately You can stop the force.

It should be noted that the protruding amount C of the operating piece 12 when the operating piece 12 is in the protruding position is the length of the portion between the upper rotating shaft 13 and the pin 15a of the upper rotating link 15 and the upper rotation. It is adjusted by adjusting the length of the portion between the upper rotation shaft 13 of the moving link 15 and the cam roller 17.

Embodiment 2.

FIG. 7 is an essential part enlarged view showing an elevator door device according to Embodiment 2 of the present invention. FIG. 8 is an enlarged view of a main part showing a state when the operating piece side link member 32 of FIG. 7 is rotated with respect to the cam plate side link member 33. In the figure, the upper rotation link 31 has an operation piece side link member 32 and a cam plate side link member 33 that can rotate around a common upper rotation shaft 13.

The upper rotation shaft 13 is provided with one end portion of the operating piece side link member 32. The upper attachment portion 12b is rotatably attached to the other end portion of the operating piece side link member 32 by a pin 15a. Further, a support member 34 extending in the length direction of the cam plate side link member 33 is provided at one end of the cam plate side link member 33. The support member 34 restricts the rotation of the operating piece side link member 32 relative to the cam plate side link member 33 when the operating piece 12 is displaced in the door closing direction. Further, a cam roller 17 is provided at the other end of the cam plate side link member 33.

The cam plate side link member 33 is rotated around the upper rotation shaft 13 while being pushed by the cam plate 18. The operating piece side link member 32 is biased toward the support member 34 by the weight of the operating piece 12. Thus, the operating piece side link member 32 is rotated about the upper rotation shaft 13 as the cam plate side link member 33 rotates while being urged by the support member 34. The operating piece side link member 32 is opposed to the urging force of the operating piece 12 due to, for example, contact of a foreign object. When is lifted, the cam plate side link member 33 is rotated.

[0048] Between the operating piece side link member 32 and the support member 34, a microswitch (a rotation detecting device) 35 for detecting whether or not the operating piece side link member 32 rotates relative to the cam plate side link member 33 is provided. Is provided. The microswitch 35 is fixed to the operating one side link member 32. Therefore, when the operating piece side link member 32 is rotated with respect to the cam plate side link member 33, the microswitch 35 is displaced in a direction in which the micro switch 35 comes into contact with or separates from the support member 34. The microswitch 35 is actuated when pressed against the support member 34 (FIG. 7). Further, the operation of the micro switch 35 is released when the micro switch 35 is displaced in a direction away from the support member 34 (FIG. 8). FIG. 8 shows a state where the angle between the operating piece side link member 32 and the support member 34 is D, and the operation of the microswitch 35 is released.

The control device determines whether or not the operation piece side link member 32 is rotated with respect to the cam plate side link member 33 based on whether or not the microswitch 35 is operated. That is, when the microswitch 35 is operated, the control device determines that the operating piece side link member 32 is not rotated with respect to the cam plate side link member 33, and the operation of the microswitch 35 is released. In some cases, it is determined that the operating one-side link member 32 rotates with respect to the cam plate-side link member 33. The control device detects that a foreign object has come into contact with the operating piece 12 when the operation of the microswitch 35 is released. Other configurations are the same as those in the first embodiment.

[0050] In such an elevator door device, the upper rotating link 31 includes a cam plate side link member 33 that can rotate with respect to the car door 4 while being pushed by the cam plate 18, and an operating piece 12. And an operating piece side link member 32 that is rotatable with respect to the force plate side link member 33. The cam plate side link member 33 has a working piece 12 when the operating piece 12 is displaced in the door closing direction. A support member 34 for restricting the rotation of the operating piece side link member 32 relative to the cam plate side link member 33 is provided, and the cam plate side link of the operating piece side link member 32 is provided between the operating piece side link member 32 and the support member 34. Since the micro switch 35 for detecting the presence or absence of rotation with respect to the member 33 is provided, it is possible to detect that a foreign object has contacted the operating piece 12 before the operating piece 12 reaches the protruding position. Therefore, it is possible to detect foreign matter at an earlier stage. [0051] Embodiment 3.

FIG. 9 is a partial front view showing an elevator door device according to Embodiment 3 of the present invention, and FIG. 10 is a cross-sectional view taken along line XX of FIG. 11 is a partial front view showing the door device of the elevator when the doorway 1 in FIG. 9 is fully closed, and FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. is there. In the figure, the elevator door is provided with a safety shoe 41 that can be displaced with respect to the car door 4. The safety shoe 41 is disposed between the operating piece 12 and the landing door 7 in the depth direction of the car. In this example, a gap E exists between the force door 4 and the operating piece 12.

[0052] The car door 4 is provided with a support shaft 42. The support shaft 42 is disposed between the upper rotating shaft 13 and the lower rotating shaft 14 in the height direction of the elevator door. The safety shoe 41 is supported by the car door 4 via a rotation link 43 that can rotate about a support shaft 42.

[0053] The safety shoe 41 is provided at one end of the rotation link 43 so as to be rotatable about a pin 43a. Further, a microswitch (detection device) 55 for detecting the presence or absence of foreign matter contact with the safety shoe 41 is provided at the other end of the rotation link 43 via a mounting base 54.

[0054] A link rotation device 45 that rotates the rotation link 43 is mounted on the cage. The link rotation device 45 rotates the rotation link 43 according to the movement of the force door 4 relative to the car. The link turning device 45 includes a cam turning body 47 that can turn around a support shaft 46 provided on the force door 4, a support member 48 provided on the force and extending in the vertical direction, and a cam turning device. A connecting body 49 that connects the moving body 47 and the support member 48 is provided.

The cam rotating body 47 includes a rotating portion 50 provided on the support shaft 46 and a cam portion 51 fixed to the end of the rotating portion 50 on the rotating link 43 side. The coupling body 49 is rotatably provided at the upper end portion of the support member 48 and the end portion of the rotating portion 50 on the side opposite to the cam portion 51. As a result, the cam rotating body 47 is rotated around the support shaft 46 in accordance with the movement of the car door 4 in the opening direction.

[0056] The micro switch 55 is displaced in a direction approaching the cam portion 51 by rotating the rotating link 43 in a direction in which the safety shoe 41 protrudes from the elevator door. When the rotary link 43 is rotated in the direction in which the user 41 is accommodated in the elevator door, the user 41 is displaced in a direction away from the force part 51.

A rotation pressing member 44 that can rotate around the pin 44a is provided at a portion between the pin 43a and the support shaft 42 of the rotation link 43. The free end portion of the rotation pressing member 44 is disposed between the other end portion of the rotation link 43 and the cam portion 51. A cam follower 52 that comes into contact with the cam portion 51 and a seat plate 53 that comes into contact with the microswitch 55 are provided at the free end of the rotation pressing member 44. The cam follower 52 is rotatable about a rotation shaft 52a.

The displacement of the safety shoe 41 in the direction of protruding from the elevator door is restricted by the cam rotating body 47 coming into contact with the cam follower 52. The protruding amount of the safety shoe 41 with the elevator door force changes as the car door 4 moves toward the front door. In this example, the safety shoe 41 is accommodated in the elevator door when the elevator door is fully closed, and the elevator door force is projected as the elevator door is moved in the door opening direction. Become.

[0059] The control device controls the normal opening / closing operation when the microswitch 55 is pressed and operated, and closes the moving direction of the elevator door when the operation of the microswitch 55 is released. Control to reverse from the direction to the door opening direction is performed.

The microswitch 55 is operated by being pressed against the seat plate 53 by the weight of the safety shoe 41. Further, the operation of the micro switch 55 is canceled by displacing the safety shoe 41 in the direction in which the safety shoe 41 is accommodated in the elevator door against the dead weight of the safety shoe 41. Other configurations are the same as those in the first embodiment.

[0061] Next, the operation of the safety shoe 41 will be described. During the opening / closing operation of the elevator door, the cam rotating body 47 is rotated according to the movement of the elevator door. Thereby, the rotation link 43 is rotated and the safety shoe 41 is displaced. At this time, the microswitch 55 is always pressed against the cam portion 51 via the rotation pressing member 44 by the weight of the safety shoe 41. As a result, the microswitch 55 remains activated, and the normal opening / closing operation is continued.

For example, when a passenger or the like comes into contact with the safety shoe 41 and the safety shoe 41 is displaced, the microswitch 55 is separated from the rotation pressing member 44 by the rotation of the rotation link 43. Is displaced in the direction. Thereby, the operation of the micro switch 55 is released, and the moving direction of the elevator door is reversed from the door closing direction to the door opening direction. The operation of the operating piece 12 is the same as that of the first embodiment.

[0063] In such an elevator door device, since the safety shoe 41 is provided on the elevator door separately from the operating piece 12, it is possible for passengers, etc., to use only light and flexible materials such as strings. Foreign matter having a large contact force can be detected more reliably. This makes it possible to more reliably detect foreign substances of different types.

[0064] Further, since the operating piece 12 is disposed between the safety shoe 41 and the car door 4, the operating piece 12 and the car door 4 are brought closer to each other in the depth direction of the car. For example, when a string or the like is sandwiched between elevator doors that fully close the doorway 1, the winding angle of the string with respect to the operating piece 12 can be increased. As a result, a greater tension can be applied to a foreign object such as a string, and the detection of the foreign object can be further ensured.

Embodiment 4.

FIG. 13 is a partial front view showing an elevator door device according to Embodiment 4 of the present invention, and FIG. 14 is a sectional view taken along line XIV-XIV in FIG. FIG. 15 is a cross-sectional view of the main part showing the door device of the elevator when the doorway 1 of FIG. 14 is fully closed. In the figure, the car door 4 is provided with a support shaft 42. The safety shoe 41 is supported by the car door 4 via a rotation link 43 that can rotate about a support shaft 42.

[0066] A fixed shaft 62 arranged at a distance from the support shaft 42 is fixed to the car door 4. A fixed pressing member 61 is fixed between the support shaft 42 and the fixed shaft 62. The fixed pressing member 61 is provided with a seat plate 53 with which the microswitch 55 contacts.

[0067] The safety shoe 41 remains protruding from the door closing side end portion of the elevator door when the elevator door is moved toward the front door. The rotation link 43 is urged in a direction in which the microswitch 55 is pressed against the seat plate 53 by the weight of the safety shoe 41. The microswitch 55 is actuated by pressing the seat plate 53 by the rotation link 43. Further, the micro switch 55 is displaced in a direction away from the seat plate 53 when the safety shoe 41 is displaced against its own weight. The operation of the microswitch 55 is released by the displacement of the microswitch 55 in the direction away from the seat plate 53. [0068] The door closing side end 12a of the operating piece 12 is positioned closer to the door closing side than the safety shoe 41 when the operating piece 12 is in the protruding position (FIG. 15), and the operating piece 12 is in the retracted position. Occasionally, it is located on the door-open side of the safety chair 41 (Fig. 14). Other configurations and operations are the same as those in the third embodiment.

[0069] In such an elevator door device, the displacement of the safety shoe 41 with respect to the elevator door and the movement of the elevator door in the opening direction of the elevator door are made independent of each other, and the configuration of the door device is further increased. Can be simple.

[0070] In the above example, the force applied to the double door type door device in which the elevator door is divided into a central force and opens to both sides is applied. The force elevator door opens only in one direction. The present invention may be applied to other door devices.

Claims

The scope of the claims

[1] A landing door, a door juxtaposition position that is juxtaposed with the landing door, and a door stand that is positioned on the door opening side by a predetermined distance from the door juxtaposition position with respect to the landing door; A car door that can be displaced between the car door and the car door, and when the car door is in a standing position, the landing door and the car door are moved while being engaged with each other, and the elevator doorway Elevator doors to open and close,

The car is located between the force door and the landing door, and protrudes from the door closing side end of the elevator door in the door closing direction, and is located on the door opening side from the protruding position. An operating piece displaceable between a door and a retracted position housed between the landing doors, and

A displacement device for displacing the operating piece according to the displacement of the force door with respect to the landing door

With

The car door is adapted to be displaced between the door side-by-side position and the door displacement position when the landing door is fully closed at the doorway,

The displacement device displaces the operating piece to the protruding position when the force door is in the door juxtaposition position, and operates the operation when the force door is in a standing position. An elevator door device characterized in that the piece is displaced to the retracted position! /.

[2] The displacement device is provided with a cam plate provided on the landing door and the operating piece. The displacement door is moved to the cage door while being in contact with the cam plate by displacement of the force door with respect to the landing door. A rotating member that rotates relative to the

The elevator door device according to claim 1, wherein the operating piece is displaced between the protruding position and the retracted position by the rotation of the rotating member. .

[3] a position detecting device for detecting whether or not the operating piece is displaced to the protruding position, and

Control for controlling the operation of the elevator based on the information on the position detecting device force The elevator door device according to claim 1 or 2, further comprising a device.

[4] The control device opens the door when the elevator door fully closes the doorway and the operating piece is out of the protruding position force before the car starts to move. The elevator door device according to claim 3, wherein the door device is moved in an opening direction.

[5] The controller controls the movement of the force when the elevator door fully closes the doorway and when the position of the operating piece deviates from the protruding position force after the movement of the car is started. The elevator door device according to claim 3 or 4, wherein the elevator door device is stopped.

[6] The rotating member is provided with a force plate side link member capable of rotating with respect to the force door while being pushed by the cam plate, and the operating piece, and is provided with respect to the cam plate side link member. And an actuating one-side link member that can be rotated.

The cam plate side link member is provided with a support member that restricts the rotation of the operating piece side link member relative to the cam plate side link member when the operating piece is displaced in the door closing direction.

The rotation detecting device for detecting whether or not the operating piece side link member rotates with respect to the cam plate side link member when the operating piece is displaced in the door opening direction. The elevator door device described in 1.

[7] Between the car door and the landing door, a safety shoe is provided separately from the operating piece to detect the presence of foreign matter by being displaced in the door opening direction with respect to the elevator door. The elevator door device according to any one of claims 1 to 6, wherein the elevator door device is provided.