Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
  • B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
  • B66B13/26—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between closing doors

Definitions

• 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.
• Patent Document 1 Japanese Patent Laid-Open No. 5-301692
• 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.
• An elevator door device 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.
• 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.
• FIG. 1 is a partial front view showing a door device for an elevator according to Embodiment 1 of the present invention.
• FIG. 2 is a cross-sectional view taken along the line ⁇ - ⁇ 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.
• FIG. 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.
• FIG. 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. 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. 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.
• ⁇ 7] is an enlarged view of a main part showing an elevator door device according to Embodiment 2 of the present invention.
• ⁇ 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.
• FIG. 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.
• FIG. 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.
• FIG. 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.
• 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 ⁇ - ⁇ in FIG.
• FIG. 3 is a partial front view showing the elevator door device when the doorway 1 of FIG. 1 is fully closed
• 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.
• 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.
• 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.
• 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).
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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).
• 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
• 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).
• the cam roller 17 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.
• the operating piece 12 is displaced to the retracted position when the force door 4 is in the door displacement position (FIG. 1).
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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. .
• the elevator door speed rises slowly after gradually increasing from zero.
• 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.
• the range below the speed of the elevator door when the force is switched slowly is the low speed range.
• the low speed range is set to 20 mmZs or less.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• the cam plate side link member 33 is rotated.
• 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.
• 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).
• 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.
• 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.
• Embodiment 3 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
• 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
• FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. is there.
• 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.
• a gap E exists between the force door 4 and the operating piece 12.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• the operation of the safety shoe 41 will be described.
• the cam rotating body 47 is rotated according to the movement of the elevator door.
• the rotation link 43 is rotated and the safety shoe 41 is displaced.
• 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.
• the microswitch 55 remains activated, and the normal opening / closing operation is continued.
• 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.
• 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.
• the winding angle of the string with respect to the operating piece 12 can be increased.
• 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.
• FIG. 13 is a partial front view showing an elevator door device according to Embodiment 4 of the present invention
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.

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• 2005
  • 2005-08-25 JP JP2007531992A patent/JPWO2007023549A1/ja active Pending
  • 2005-08-25 WO PCT/JP2005/015433 patent/WO2007023549A1/ja active Application Filing
  • 2005-08-25 CN CNB2005800371551A patent/CN100569623C/zh not_active Expired - Fee Related
  • 2005-08-25 KR KR1020077011398A patent/KR100940420B1/ko not_active IP Right Cessation
  • 2005-08-25 EP EP05780958A patent/EP1918241A4/en not_active Withdrawn

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