WO2007039931A1

WO2007039931A1 - Door device for elevator

Info

Publication number: WO2007039931A1
Application number: PCT/JP2005/018462
Authority: WO
Inventors: Hiroshi Kigawa; Takaharu Ueda
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2005-10-05
Filing date: 2005-10-05
Publication date: 2007-04-12
Also published as: CN101068743A; EP1932796A1; JPWO2007039931A1

Abstract

The doorway of an elevator car is opened and closed by a car door. At the end on the door close side of the car door, there are provided an operation member capable of being displaced between a projected position at which the operation member is projected from the lower end of the car door and a receded position located above the projected position. The operation member is displaced to the projected position when the doorway is totally closed by the car door and is displaced to the receded position when the car door is moved in the door close direction. A doorsill with a sill hole is provided at the lower part of the doorway. The operation member is inserted into the doorsill hole as the member is displaced to the projected position by movement of the car door. Also, the operation member is removed from the doorsill hole when the member is displaced to the projected position. Whether there is displacement of the operation member to the projected position is detected by a detection switch. Further, the door control device controls the movement of the car door based on information from the detection switch.

Description

Specification

Elevator door equipment

Technical field

TECHNICAL FIELD [0001] The present invention relates to an elevator door device that opens and closes an entrance 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. Below the door, a sill extending in the moving direction of the door is provided. The threshold is provided with a guide groove into which the lower end of the operating piece is inserted. 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 to the door closing direction force and 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] Further, since the door moves with the operating piece inserted into the guide groove, the sill must be provided with a guide groove over the entire range in which the door moves. Impedes the improvement of sex.

[0006] The present invention has been made to solve the above-described problems, and is an elevator door that can detect foreign matter more reliably and improve design. The object is to obtain a device.

Means for solving the problem

[0007] An elevator door device according to the present invention is provided at a car door that opens and closes a car doorway, a door closing side end portion of the car door, and a projecting position at which a lower end portion of the force door projects, and above the projecting position The car door is displaced to the protruding position when the car doorway is fully closed, and the force door is moved in the door opening direction. An operating piece that is displaced to the position where the force door is moved, and an operating piece that is displaced to the projecting position as the force door moves are inserted. , A car sill provided at the bottom of the force doorway, a detection switch that detects the presence or absence of displacement of the operating piece to the protruding position, and a door control device that controls the movement of the force door based on the information of the detected switch force It has.

Brief Description of Drawings

FIG. 1 is a partial front view showing an elevator door device according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view taken along line Π-Π in FIG.

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

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

FIG. 5 is an enlarged cross-sectional view taken along line VV in FIG.

FIG. 6 is a front view showing a state where a string crosses as a foreign object on the landing threshold and the basket threshold of FIG.

7 is a cross-sectional view taken along line VII-VII in FIG.

FIG. 8 is an enlarged sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a partial cross-sectional view showing an elevator door device according to Embodiment 2 of the present invention.

FIG. 10 is an enlarged sectional view taken along line XX in FIG.

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. 3 is a partial front view showing the elevator door device when the car doorway 1 in FIG. 1 is fully closed, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. . FIG. 1 is a diagram showing the car doorway 1 in a half-open state. In the figure, the car is provided with a car doorway 1. At the top of the car doorway 1, a car-side hanger case 2 fixed to a force cage is provided. The car-side hanger case 2 is provided with a car-side door rail 3 that extends in the direction of the entrance of the car entrance 1. A pair of car doors 4 that open and close the car doorway 1 are suspended from the car side door rail 3.

[0010] At the upper part of each car door 4, a plurality (two in this example) of hanger rollers 5 mounted on the car-side door rail 3 are provided. 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.

[0011] A landing entrance 6 (Figs. 2 and 4) is provided at the landing on each floor. The car entrance 1 faces the landing entrance 6 when the force is stopped on each floor. A landing-side hanger case (not shown) fixed to the landing-side wall is provided above the landing entrance 6. The landing-side hanger case is provided with a landing-side door rail (not shown) that extends in the direction of the entrance of the landing entrance 6. A pair of landing doors 7 (FIGS. 2 and 4) for opening and closing the landing entrance 6 are suspended from the landing door rail.

[0012] Each landing door 7 is movable along a landing-side door rail. Each landing door 7 is moved together with each car door 4 while being engaged with the car door 4 by an engaging device (not shown) when the force is stopped on each floor. The landing entrance 6 is opened and closed by the movement of each landing door 7.

[0013] The door closing side end of each car door 4 is provided with a door contact surface 4a that abuts each other when each car door 4 fully closes the car doorway 1. The door closing side end of each landing door 7 is provided with a door contact surface 7a that abuts each other when each landing door 7 fully closes the landing entrance 6. The position where the door contact surfaces 4a are in contact with each other and the door contact surfaces 7a The positions where they abut each other are located on the door contact reference plane P perpendicular to the entrance direction of the car entrance 1 and the landing entrance 6. The door-to-door reference plane P is located at the center of force entrance 1 and landing entrance 6!

[0014] At the door closing side end of each car door 4, there is provided a safety system 8 (Figs. 2 and 4) and a detection plate (operating piece) 9 that can be displaced with respect to the car door 4, respectively. . The safety shoe 8 and the detection plate 9 are disposed between the force door 4 and the landing door 7. The detection plate 9 is disposed between the safety tissue 8 and the car door 4. Also, the weight of the detection plate 9 is made lighter than the weight of the safety shoe 8! /.

The safety shoe 8 and the detection plate 9 are displaced in accordance with the movement of the car door 4. That is, a displacement device (not shown) is provided between the car door 4 and the landing door 7 for independently displacing the safety shoe 8 and the detection plate 9 according to the movement of the force door 4. ing. As the displacement device, for example, the safety shoe 8 and the detection plate 9 are displaced according to the position of the car door 4 with respect to the car, or the safety shoe 8 and the detection plate 9 are displaced according to the position of the car door 4 with respect to the landing door 7. And the like.

[0016] The safety shoe 8 is moved together with the force dough 4 in a state of protruding from the door closing side end portion of the car door 4 to the door closing side, and when the car door 4 fully closes the car doorway 1, the force door 4 and the door 7 are accommodated. When each car door 4 is moved in the door closing direction, for example, when the safety shoe 8 is displaced with respect to the car door 4 due to an obstacle touching the safety shoe 8, the movement of each car door 4 is moved. The direction is reversed from the door closing direction to the door opening direction under the control of a door control device (not shown).

[0017] The detection plate 9 can be displaced between a protruding position protruding downward from the lower end of the force door 4 and a retracted position positioned above the protruding position. When the detection plate 9 is in the protruding position, the force on the door closing side of the force door 4 is also protruded in the door closing direction. Further, the detection plate 9 is accommodated between the force door 4 and the landing door 7 when in the retracted position.

[0018] The detection plate 9 is displaced toward the protruding position by the movement of the force door 4 in the door closing direction, and is displaced toward the retracted position by the movement of the force door 4 in the door opening direction. . Further, the detection plate 9 reaches the protruding position when the force door 4 fully closes the car doorway 1. In this example, the displacement of the detection plate 9 to the backward position force protruding position is due to the car door 4 being at the car doorway It is started when a predetermined position is reached just before 1 is fully closed, and is completed when the car door 4 fully closes the car doorway 1. The protruding position force of the detecting plate 9 The displacement to the retracted position is started when the movement of the force door 4 in the door opening direction is started, and when the force door 4 reaches the above-mentioned predetermined position. To complete.

An upper mounting portion 10 is provided on the upper portion of the detection plate 9, and a lower mounting portion 11 is provided on the lower portion of the detection plate 9. Each of the upper mounting portion 10 and the lower mounting portion 11 protrudes from the detection plate 9 to the door opening side.

[0020] The car door 4 is provided with an upper rotating shaft 12 and a lower rotating shaft 13 which are arranged at intervals from each other in the height direction of the car door 4. The detection plate 9 is a force door through an upper rotation link 14 that can rotate around an upper rotation shaft 12 and a lower rotation link 15 that can rotate around a lower rotation shaft 13. Supported by 4. An upper mounting portion 10 is rotatably attached to the tip of the upper rotating link 14 by a pin 16, and a lower mounting portion 11 is rotatably attached to a tip of the lower rotating link 15 by a pin 17. It has been. The detection plate 9 is displaced between the protruding position and the retracted position by the rotation of the upper rotating link 14 and the lower rotating link 15. In addition, the car door 4 is provided with a stopper 18 for holding the detection plate 9 in the protruding position by contacting the upper rotating link 14.

The car door 4 is provided with a micro switch (detection switch) 19 for detecting whether or not the detection plate 9 is displaced to the protruding position. In this example, the microswitch 19 detects the presence or absence of the displacement of the detection plate 9 to the protruding position based on the presence or absence of contact with the lower rotary link 15. The car doorway 1 is provided with a fully closed detection sensor (not shown) for detecting whether the car doorway 1 is fully closed by the car door 4 or not.

Information from the fully-closed detection sensor and the microswitch 19 is sent to the door control device. The door control device controls the movement of the force door 4 based on information from the full-close detection sensor and the microswitch 19. That is, when the car door 4 fully closes the car doorway 1 and the position of the detection plate 9 is out of the protruding position force, the door control device changes the moving direction of the force door 4 from the door closing direction to the door opening direction. To reverse. In addition, the door control device is such that the car door 4 fully closes the car entrance 1 and the position of the detection plate 9 When the is in the protruding position, the force can be moved! /

A plurality of door legs 20 are provided at the lower end of the force door 4. A protective piece (sweeper) 21 is provided at the lower end of the door closing side end of the force door 4. The door legs 20 and the protection pieces 21 also project the lower end force of the force door 4 downward. Further, the length of the protective piece 21 protruding downward is shorter than the length of the door legs 20 protruding downward.

[0024] A car sill 22 fixed to the car is provided below the car doorway 1. The force sill 22 is provided with a car sill groove 23 extending in the direction of the front door of the force doorway 1 and a sill hole (detection hole) 24 arranged at a position intersecting the door stop reference plane P.

Each door limb 20 and the protection piece 21 are inserted into the car sill groove 23. The door legs 20 and the protection pieces 21 are moved along the car sill groove 23 together with the car door ^{4 while} being inserted into the car sill groove 23.

[0026] The sill hole 24 is a long hole arranged so as to be parallel to the frontage direction of the car entrance 1 and the landing entrance 6. The sill hole 24 is a through hole penetrating the car sill 22 in the vertical direction.

[0027] A landing threshold 25 (Figs. 2 and 4) fixed to the landing is provided below the landing entrance 6. The landing threshold 25 is provided with a landing threshold groove 26 extending in the direction of the entrance of the landing entrance 6. A plurality of door legs (not shown) provided at the lower ends of the landing doors 7 are inserted into the landing threshold grooves 26. Each door peddle is moved along the landing threshold groove 26 together with the landing door 7 while being inserted in the landing threshold groove 26.

FIG. 5 is an enlarged cross-sectional view along the line V-V in FIG. As shown in FIG. 5, when the car door 4 fully closes the force cage door 1 and the detection plate 9 is displaced to the protruding position, the lower portion of the detection plate 9 Inserted in 24. Further, the lower part of the detection plate 9 is detached from the inside of the sill hole 24 when the detection plate 9 is displaced toward the retracted position.

FIG. 6 is a front view showing a state in which a string crosses as a foreign object on the landing threshold 25 and the car threshold 22 in FIG. FIG. 7 is a sectional view taken along line VII-VII in FIG. Further, FIG. 8 is an enlarged sectional view taken along line VIII-VIII in FIG. In the figure, when a string (foreign material) 27 passes over the car threshold 22, the string 27 is moved by the movement of the car door 4 in the door closing direction. Then, it is pushed by the protective piece 21 and carried over the threshold hole 24.

[0030] When the string 27 is on the threshold hole 24, the detection plate 9 is caught by the string 27 and the displacement of the detection plate 9 to the protruding position is prevented. In this example, the length D (FIG. 8) in the width direction of the sill hole 24 is adjusted so that when the detection plate 9 is caught by the string 27, the tension that supports the detection plate 9 is applied to the string 27. Yes.

Next, the operation will be described. When the force entrance 1 and the landing entrance 6 are fully closed, the lower part of the detection plate 9 is inserted into the threshold hole 24. At this time, it is detected by the door control device that the lower rotation link 15 is in contact with the microswitch 19 and the detection plate 9 is in the protruding position.

[0032] When the car is stopped at the destination floor, each of the force doors 4 is moved in the door opening direction, and the detection plate 9 is also displaced to the retracted position. As a result, the insertion into the lower sill hole 24 of the detection plate 9 is released, and the lower rotating link 15 is separated from the microswitch 19. Thereafter, the car door 4 is moved while being engaged with the landing door 7, and the force doorway 1 and the landing doorway 6 are fully opened.

[0033] Thereafter, the force door 4 is moved in the door closing direction, and the car doorway 1 is fully closed. At this time, with the movement of the car door 4, the detection plate 9 is displaced to the retracted position force protruding position, and the lower portion of the detection plate 9 is inserted into the threshold hole 24. At this time, it is detected by the door control device that the lower rotation link 15 is in contact with the microswitch 19 and the detection plate 9 has reached the protruding position. When the force dough 4 fully closes the car entrance 1 and the detection plate 9 has reached the protruding position, the door control device detects that the force moves.

[0034] Next, the operation of the door device when an elongated foreign object such as a string 27 crosses the car sill 22 and the landing sill 25 will be described. When the car door 4 is moved in the door closing direction, the string 27 is moved in the door closing direction together with the force door 4 while being pushed by the protective piece 21. As a result, when the force door 4 fully closes the car doorway 1, the string 27 is carried to a position crossing the threshold hole 24.

On the other hand, when the car door 4 is just before the car doorway 1 is fully closed, the detection plate 9 is displaced from the retracted position to the protruding position. At this time, since the string 27 crosses the threshold hole 24, the lower end portion of the detection plate 9 is caught by the string 27. As a result, to the protruding position of the detection plate 9 The displacement of is blocked by the string 27. Thereafter, the car door 4 is further moved in the door closing direction while the detection plate 9 is hooked on the string 27, and the force doorway 1 is fully closed. In other words, the car doorway 1 is fully closed while the lower rotating link 15 is away from the microswitch 19.

[0036] Thereby, the presence of the foreign object is detected by the door control device, and the moving direction of the car door 4 is reversed from the door closing direction to the door opening direction.

In such an elevator door device, the detection plate 9 that can be displaced between a protruding position where the lower end force of the force door 4 protrudes and a retracted position located above the protruding position is provided for the car door 4. The cage sill 22 is provided with a sill hole 24 into which the lower part of the detection plate 9 is inserted when the detection plate 9 is displaced to the projecting position. Even when crossing over the basket sill 22, tension can be applied to the string by inserting the string between the detection plate 9 and the threshold hole 24, and the displacement of the detection plate 9 to the protruding position Can be prevented more reliably. As a result, the presence of the string can be detected more reliably. In addition, since the detection plate 9 reaches the protruding position only when the force door 4 fully closes the car entrance 1, it is only necessary to provide a threshold hole 24 in a part of the force threshold 22. It is not necessary to provide a groove in the cage sill 22 over the entire range of movement of the rugged door 4. Therefore, the design of the door device can be improved.

[0038] In addition, a protective piece 21 is provided at the lower end of the force door 4 to move the string to a position that prevents the detection plate 9 from moving to the protruding position by being moved together with the force door 4. As a result, the string can be transported more reliably to a position crossing the threshold hole 24, and the presence of the string can be detected more reliably.

[0039] Further, since the sill hole 24 penetrates the force sill 22, it is possible to prevent foreign matter from accumulating in the sill hole 24 and to prevent erroneous detection of the presence of foreign matter. .

[0040] When the detection plate 9 is in the protruding position, the detection plate 9 also protrudes from the door closing side end of the car door 4 to the door closing side. Even when crossing, the string 27 can contact the detection plate 9 when the car doorway 1 is fully closed. Thereby, the detection plate 9 can be displaced with respect to the car door 4, and the string 27 can be detected more reliably.

[0041] In the above example, in order to carry the string to the position on the threshold hole 24, a dedicated protective piece 21 is provided. Although it is provided at the lower end of the force door 4, the door pedestal 20 may also be used as a protective piece. In this way, the dedicated protective piece 21 can be eliminated, and the manufacturing cost can be reduced.

[0042] Embodiment 2.

FIG. 9 is a partial cross-sectional view showing an elevator door device according to Embodiment 2 of the present invention. FIG. 10 is an enlarged cross-sectional view along the line XX in FIG. In the figure, when the detection plate 9 is displaced to the protruding position, the lower part of the detection plate 9 is inserted into the gap between the car sill 22 and the landing sill 25, and the detection plate 9 is displaced to the retracted position. The lower part of the detection plate 9 is also able to release the clearance force between the force threshold 22 and the landing threshold 25.

[0043] At the lower end of the landing door 7, a plurality of door legs 31 are provided. In addition, a protective piece 32 for moving the string (foreign material) 27 to a position that prevents displacement of the detection plate 9 to the protruding position is provided at the lower end of the landing door 7 at the door closing side. Other configurations are the same as those in the first embodiment.

Next, the operation will be described. When the string 27 crosses the landing threshold 25 on the car threshold 22, the car door 4 and the landing door 7 are moved in the door closing direction so that the string 27 is pushed by the protective pieces 21, 32. Moved. At this time, the string 27 is moved across the gap between the car threshold 22 and the landing threshold 25. Further, the position of the string 27 at this time is a position that prevents the detection plate 9 from being displaced to the protruding position.

[0045] Immediately before the car door 4 fully closes the car doorway 1, the detection plate 9 starts to move to the backward position force protruding position. After this, since the string 27 crosses the gap between the force threshold 22 and the landing threshold 25, the detection plate 9 is caught by the string 27, and the displacement of the detection plate 9 to the protruding position is caused by the string 27. Be disturbed. The subsequent operation is the same as in the first embodiment.

[0046] In such an elevator door device, when the detection plate 9 is displaced to the protruding position, the lower portion of the detection plate 9 is inserted into the gap between the car sill 22 and the landing sill 25. Therefore, it is not necessary to provide a sill hole into which the detection plate 9 is inserted in the car sill 22 and the structure can be simplified.

In each of the above embodiments, the present invention is applied to a double-opening type door device in which the force door 4 and the landing door 7 are separated from each other by a central force and are opened on both sides. The present invention may be applied to a single-open door device in which the landing door 7 opens only in the direction.

Claims

The scope of the claims

[1] a car door that opens and closes the car doorway,

It is provided at the door closing side end of the force door and is displaceable between a protruding position protruding from the lower end of the force door and a retracted position positioned above the protruding position. The cage door is displaced to the protruding position by fully closing the cage doorway, and the operating piece is displaced to the retracted position by moving the force door in the door opening direction. The operating piece displaced to the projecting position as it moves is inserted, and a sill hole is provided to disengage the operating piece when the operating piece is displaced to the retracted position. Or the sill,

A detection switch that detects the presence or absence of displacement of the operating piece to the protruding position, and a door control device that controls the movement of the car door based on information from the detection switch.

An elevator door device comprising:

[2] car door that opens and closes the car doorway,

A landing door that faces the force door and opens and closes the landing doorway while being engaged with the force door,

It is provided at the door closing side end of the force door, and is displaceable between a protruding position protruding from the lower end of the force door and a retracted position positioned above the protruding position. The car door is displaced to the projecting position by fully closing the car doorway, and the working piece is displaced to the retracted position by moving the force door in the door opening direction. Detection switch for detecting the presence or absence of displacement to the protruding position, and a door control device for controlling the movement of the car door based on information from the detection switch

With

The operating piece is inserted into a gap between a car sill provided at a lower portion of the force entrance and a landing sill provided at a lower portion of the landing entrance by displacement to the protruding position,

Inserting the operating piece into the gap is removed by displacement to the retracted position. An elevator door device characterized by that.

[3] The lower end of the force door is provided with a protection piece for moving the foreign object to a position where the action piece is prevented from moving to the protruding position by being moved together with the force door. The elevator door device according to claim 1 or 2, wherein the elevator door device is provided.

[4] The operation piece according to claim 1 or 2, wherein when the operating piece is in the projecting position, the door closing side end force of the force door also projects to the door closing side. Elevator door device.