Car door device of elevator

Abstract

To obtain a car door device of an elevator which can easily attain a function for restricting closing operations of car doors by self-closing force of landing doors.SOLUTION: A restriction device 50 has a restriction device main part 51. The restriction device main part 51 is attached to a car girder 31. Closing operations of a first car door 32 and a second car door 33 by self-closing force of a first landing door 16 and a second landing door 17 are restricted by a connection mechanism roller 69 contacting with a movable part located at a restriction position.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to an elevator car door device.

Background Art

[0002] In a conventional elevator door device, a portion made of a ferromagnetic material is provided on a hanger roller. A part of the door rail is made of a magnet. The magnet is disposed at a position corresponding to the ferromagnetic material when the door is at least in the closed position among the open position and the closed position (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional elevator door device as described above, it is necessary to use a special hanger roller including a portion made of a ferromagnetic material, and when applying it to an existing door device, it is necessary to replace the hanger roller. Further, it is necessary to dispose a magnet at a position corresponding to the ferromagnetic material when the door is at least in the closed position among the open position and the closed position, and the position adjustment is troublesome.

[0005] The present disclosure has been made to solve the above problems, and an object thereof is to obtain an elevator car door device that can easily have a function of restricting the closing operation of the car door by the self-closing force of the landing door.

Means for Solving the Problems

[0006] The car door device of the elevator according to the present disclosure includes a car door rail provided on the car, a door motor provided on the car, a car door provided on the car and opened and closed by the door motor, a car-side connection mechanism that connects the car door to the landing door and interlocks the landing door with the opening and closing operation of the car door, and a regulating device that regulates the closing operation of the car door due to the self-closing force of the landing door while allowing the opening and closing operation of the car door by the door motor. The car-side connection mechanism is provided on the car door and has a connection mechanism roller that moves together with the car door. The regulating device has a regulating device main body provided on the car door rail. The regulating device main body has a movable part that can be displaced between a regulating position and an allowing position, and a return spring part that returns the movable part from the allowing position to the regulating position. The closing operation of the car door due to the self-closing force of the landing door is regulated by the connection mechanism roller hitting the movable part located at the regulating position. When the car door is opened and closed by the door motor, the movable part is pushed by the connection mechanism roller, so that the return spring part is elastically deformed and the movable part is displaced to the allowing position.

Effect of the Invention

[0007] According to the car door device of the elevator of the present disclosure, it is possible to easily provide a function of regulating the closing operation of the car door due to the self-closing force of the landing door.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0009] Hereinafter, embodiments will be described with reference to the drawings. Embodiment 1. FIG. 1 is a schematic configuration diagram showing an elevator according to Embodiment 1. In the figure, a machine room 2 is provided above the hoistway 1. In the machine room 2, a hoisting machine 3, a compensator 4, and an elevator control device 5 are installed.

[0010] The hoisting machine 3 has a drive sheave 6, a hoisting machine motor (not shown), and a hoisting machine brake (not shown). The hoisting machine motor rotates the drive sheave 6. The hoisting machine brake holds the drive sheave 6 in a stationary state. Also, the hoisting machine brake brakes the rotation of the drive sheave 6.

[0011] A suspension body 7 is wound around the drive sheave 6 and the compensator 4. As the suspension body 7, a plurality of ropes or a plurality of belts are used. A car 8 is connected to the first end of the suspension body 7. A counterweight 9 is connected to the second end of the suspension body 7.

[0012] The car 8 and the counterweight 9 are suspended by the suspension body 7 and move up and down in the hoistway 1 by rotating the drive sheave 6. The elevator control device 5 controls the operation of the car 8 by controlling the hoisting machine 3.

[0013] In the hoistway 1, a pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are installed. The pair of car guide rails guide the up and down movement of the car 8. The pair of counterweight guide rails guide the up and down movement of the counterweight 9.

[0014] The car 8 has a car frame 10, a car cabin 11, and a car door device 12. The suspension body 7 is connected to the car frame 10. The car cabin 11 is supported by the car frame 10. A door controller 13 is provided on the car 8. The door controller 13 controls the car door device 12.

[0015] A landing door device 14 is provided at each landing of multiple floors. Each landing door device 14 operates to open and close in conjunction with the car door device 12 when the car 8 lands.

[0016] Figure 2 is a front view of the main part of the landing door device 14 in FIG. 1 as viewed from the hoistway 1 side. Each landing door device 14 has a landing door girder 15, a first landing door 16, a second landing door 17, a landing door interlocking mechanism 18, an interlock device 19, and a door closer (not shown).

[0017] A landing entrance 14a is provided at each landing of multiple floors. The landing door girder 15 is fixed above the landing entrance 14a. A landing door rail 15a is provided on the landing door girder 15. The landing door rail 15a is arranged parallel and horizontally in the width direction of the landing entrance 14a. The width direction of the landing entrance 14a is a direction parallel to the opening and closing operation direction of the first landing door 16 and the second landing door 17, which is the left - right direction in FIG. 2.

[0018] The first boarding door 16 and the second boarding door 17 are suspended from the boarding door rail 15a. Also, when the boarding entrance 14a is opened and closed, the first boarding door 16 and the second boarding door 17 are guided by the boarding door rail 15a and move in opposite directions to each other.

[0019] Each of the first boarding door 16 and the second boarding door 17 has a boarding door body 20 and a boarding door hanger 21. Each boarding door body 20 opens and closes the boarding entrance 14a.

[0020] The boarding door hanger 21 is fixed to the upper part of the boarding door body 20. Also, the boarding door hanger 21 is hung on the boarding door rail 15a.

[0021] The boarding door interlocking mechanism 18 has a first boarding pulley 22, a second boarding pulley 23, an endless interlocking rope 24, a first boarding door connection fitting 25, and a second boarding door connection fitting 26.

[0022] The first boarding pulley 22 and the second boarding pulley 23 are provided on the boarding door girder 15 with a space therebetween in the width direction of the boarding entrance 14a. The interlocking rope 24 is wound around the first boarding pulley 22 and the second boarding pulley 23.

[0023] The first boarding door 16 is connected to the lower part of the interlocking rope 24 via the first boarding door connection fitting 25. The second boarding door 17 is connected to the upper part of the interlocking rope 24 via the second boarding door connection fitting 26.

[0024] When the interlocking rope 24 circulates due to the opening and closing operation of the first boarding door 16, the second boarding door 17 moves in the direction opposite to that of the first boarding door 16. That is, the boarding door interlocking mechanism 18 interlocks the second boarding door 17 with the opening and closing operation of the first boarding door 16.

[0025] The interlock device 19 is provided between the boarding door girder 15 and the first boarding door 16. Also, the interlock device 19 prevents the boarding entrance 14a from being opened from the boarding side when the car 8 is not landed.

[0026] The interlock device 19 also has a latch 27 , an interlock latch 28 , a fixed interlock roller 29 , and a movable interlock roller 30 .

[0027] The latch 27 is fixed to the landing door girder 15. The interlock latch 28 is rotatably attached to the landing door hanger 21 of the first landing door 16. When the first landing door 16 and the second landing door 17 are in the fully closed position, the tip of the interlock latch 28 is caught by the latch 27, thereby preventing the first landing door 16 and the second landing door 17 from moving in the opening direction.

[0028] The fixed interlock roller 29 is disposed coaxially with the rotation axis of the interlock latch 28. The movable interlock roller 30 is attached to the interlock latch 28. This allows the movable interlock roller 30 to move along an arc centered on the rotation axis of the interlock latch 28.

[0029] The door closer constantly applies a force in the closing direction, that is, a self-closing force, to the first landing door 16 and the second landing door 17. The door closer generates the self-closing force of the first landing door 16 and the second landing door 17 by utilizing, for example, gravity acting on a closer weight.

[0030] Fig. 3 is a front view of a part of the car door device 12 in Fig. 1 as viewed from the landing side. The car door device 12 has a car door girder 31, a first car door 32, a second car door 33, a car door drive mechanism 34, a car-side connecting mechanism 60, and a regulating device 50.

[0031] The car chamber 11 is provided with a car entrance / exit 11a. The car door rail 31 is fixed to the car 8 above the car entrance / exit 11a. The car door rail 31 is provided with a car door rail 31a. The car door rail 31a is parallel and horizontal in the width direction of the car entrance / exit 11a. The width direction of the car entrance / exit 11a is a direction parallel to the opening / closing operation direction of the first car door 32 and the second car door 33, and is the left-right direction in Fig. 3.

[0032] The first car door 32 and the second car door 33 are suspended from the car door rail 31a. The first car door 32 and the second car door 33 are guided by the car door rail 31a and move in opposite directions when the car entrance / exit 11a is opened / closed.

[0033] Each of the first car door 32 and the second car door 33 has a car door body 41 and a car door hanger 42. Each car door body 41 opens and closes the car entrance / exit 11a.

[0034] The car door hanger 42 is fixed to the upper part of the car door body 41. Also, the car door hanger 42 is hung on the car door rail 31a.

[0035] Also, the car door hanger 42 has a hanger plate 42a, a plurality of hanger rollers 42b, and a plurality of up / down thrust rollers (not shown).

[0036] The hanger plate 42a is fixed to the upper part of the car door body 41. Each hanger roller 42b is rotatably provided on the hanger plate 42a. Also, each hanger roller 42b is placed on the car door rail 31a. Also, each hanger roller 42b moves while rolling on the car door rail 31a during the opening / closing operation of the first car door 32 and the second car door 33.

[0037] Each up thrust roller is provided on the hanger plate 42a directly below the corresponding hanger roller 42b. Each up thrust roller is disposed below the car door rail 31a. Each up thrust roller prevents the corresponding hanger roller 42b from falling off the car door rail 31a.

[0038] The car door drive mechanism 34 is provided on the car door girder 31. The car door drive mechanism 34 also has a door motor 44, a first car pulley 45, a second car pulley 46, an endless drive belt 47, a first car door connecting fitting 48, and a second car door connecting fitting 49.

[0039] The door motor 44 is fixed to the car door beam 31. The first car pulley 45 is attached to a rotation shaft of the door motor 44. The door motor 44 rotates the first car pulley 45.

[0040] The second car pulley 46 is provided on the car door girder 31 at a distance from the first car pulley 45 in the width direction of the car entrance 11a. A drive belt 47 is wound around the first car pulley 45 and the second car pulley 46.

[0041] The first car door 32 is connected to a lower portion of the drive belt 47 via a first car door connecting fitting 48. The second car door 33 is connected to an upper portion of the drive belt 47 via a second car door connecting fitting 49.

[0042] When the first car pulley 45 rotates, the drive belt 47 circulates, and the first car door 32 and the second car door 33 move in the opposite directions to each other. That is, the drive belt 47 transmits the drive force of the door motor 44 to the first car door 32 and the second car door 33.

[0043] The car-side connecting mechanism 60 is provided between the first car door 32 and the car door girder 31. The car-side connecting mechanism 60 has a mounting plate 61, a door stopper side vane 62, a door pocket side vane 63, and a vane drive mechanism 64.

[0044] The mounting plate 61 is attached to the first car door 32. The door-stop side vane 62 and the door-pocket side vane 63 are respectively attached to the mounting plate 61. Further, the door-stop side vane 62 and the door-pocket side vane 63 are arranged parallel to each other and along the vertical direction.

[0045] The door-pocket side vane 63 is arranged on the door-pocket side with respect to the door-stop side vane 62. Further, the door-pocket side vane 63 is displaceable with respect to the door-stop side vane 62 in a direction approaching or separating from the door-stop side vane 62.

[0046] The vane drive mechanism 64 displaces the door-pocket side vane 63 in conjunction with the opening and closing operation of the first car door 32.

[0047] When the car 8 lands and the first car door 32 starts to open, the movable side interlock roller 30 and the fixed side interlock roller 29 are sandwiched between the door-stop side vane 62 and the door-pocket side vane 63. That is, the car side connection mechanism 60 is connected to the interlock device 19. Thereby, the interlock latch 28 rotates clockwise in FIG. 2, and the interlock device 19 is unlocked.

[0048] Therefore, the car side connection mechanism 60 can connect the first car door 32 to the first landing door 16 and interlock the first landing door 16 with the opening and closing operation of the first car door 32.

[0049] The vane drive mechanism 64 has a first link 65, a second link 66, a connecting member 67, a connecting rod 68, a connecting mechanism roller 69, and a connecting mechanism cam 70.

[0050] The first end portion of the first link 65 is rotatably attached to the mounting plate 61 about the first link shaft 65a. The second end portion of the first link 65 is rotatably connected to the middle portion of the door-pocket side vane 63.

[0051] The second link 66 is disposed below the first link 65. The middle part of the second link 66 is rotatably attached to the mounting plate 61 about the second link axis 66a. The first end of the second link 66 is rotatably connected to the lower end of the door pocket side vane 63. The portion from the middle part to the first end in the second link 66 is parallel to the first link 65.

[0052] The connecting member 67 is rotatably attached to the mounting plate 61 above the first link 65 about the connecting member axis 67a. The outer shape of the connecting member 67 is a sector-shaped flat plate.

[0053] The upper end of the connecting rod 68 is rotatably connected to the first end of the connecting member 67. The lower end of the connecting rod 68 is rotatably connected to the second end of the second link 66.

[0054] The connecting mechanism roller 69 is rotatably attached to the second end of the connecting member 67. Further, the connecting mechanism roller 69 moves together with the first cage door 32.

[0055] The connecting mechanism cam 70 is fixed to the cage door rail 31. The connecting mechanism roller 69 contacts the connecting mechanism cam 70 when the first cage door 32 and the second cage door 33 are in the fully closed position. Further, the connecting mechanism roller 69 separates from the connecting mechanism cam 70 when the first cage door 32 moves away from the fully closed position.

[0056] The regulating device 50 is provided on the cage door rail 31. Further, the regulating device 50 regulates the closing operation of the first cage door 32 and the second cage door 33 by the self-closing force of the first landing door 16 and the second landing door 17 while allowing the opening and closing operations of the first cage door 32 and the second cage door 33 by the door motor 44.

[0057] Further, the regulating device 50 includes a regulating device main body 51 and a bracket 52. The regulating device main body 51 is attached to the cage door rail 31 via the bracket 52. Further, the regulating device main body 51 is a leaf spring member formed by bending a strip-shaped spring steel.

[0058] Figure 4 is an explanatory diagram showing the relationship between the regulating device main body 51 in Figure 3 and the connecting mechanism roller 69. The solid line in Figure 4 shows the positional relationship between the regulating device main body 51 and the connecting mechanism roller 69 when the first car door 32 is in the fully open position.

[0059] The regulating device main body 51 has a V-shaped movable part 51a and a return spring part 51b. The movable part 51a is displaceable in the vertical direction between a regulating position and a permitted position. The regulating position is the position shown by the solid line in Figure 4. The permitted position is the position shown by the dashed-dotted line in Figure 4. The return spring part 51b returns the movable part 51a from the permitted position to the regulating position.

[0060] The closing operation of the first car door 32 and the second car door 33 due to the self-closing force of the first landing door 16 and the second landing door 17 is regulated by the connecting mechanism roller 69 hitting the movable part 51a located at the regulating position, as shown by the solid line in Figure 4.

[0061] When the first car door 32 and the second car door 33 are opened and closed by the door motor 44, the movable part 51a is pushed by the connecting mechanism roller 69, causing the return spring part 51b to elastically deform and the movable part 51a to displace to the permitted position. As a result, the connecting mechanism roller 69 is permitted to pass through the movable part 56a, and the opening and closing operations of the first car door 32 and the second car door 33 are permitted.

[0062] The opening and closing force by the door motor 44 is greater than the self-closing force of the first landing door 16 and the second landing door 17. The spring force of the return spring part 51b is set to a value greater than the self-closing force of the first landing door 16 and the second landing door 17 and smaller than the opening and closing force by the door motor 44. Also, the spring force of the return spring part 51b is set to a value closer to the self-closing force than the intermediate value between the self-closing force of the first landing door 16 and the second landing door 17 and the opening and closing force by the door motor 44.

[0063] FIG. 5 is a front view showing an enlarged view of the car-side connection mechanism 60 in FIG. 3, and shows the state of the car-side connection mechanism 60 when the first car door 32 and the second car door 33 are in the fully closed position.

[0064] When the car 8 lands, the movable-side interlock roller 30 and the fixed-side interlock roller 29 are located between the door-stop-side vane 62 and the door-pocket-side vane 63. However, the door-pocket-side vane 63 is separated from the movable-side interlock roller 30 and the fixed-side interlock roller 29.

[0065] FIG. 6 is a front view showing the car-side connection mechanism 60 immediately after the first car door 32 and the second car door 33 start to open. When the first car door 32 moves in the opening direction from the fully closed position, the connection mechanism roller 69 moves downward along the connection mechanism cam 70, and the connection member 67 rotates clockwise in FIG. 6.

[0066] Further, when the door-pocket-side vane 63 moves in a direction approaching the door-stop-side vane 62, the first link 65 and the second link 66 each rotate clockwise in FIG. 6, and the connection rod 68 moves upward.

[0067] As a result, the movable-side interlock roller 30 and the fixed-side interlock roller 29 are sandwiched between the door-stop-side vane 62 and the door-pocket-side vane 63, and the interlock device 19 is unlocked. After that, the first car door 32 moves in the opening direction together with the first landing door 16.

[0068] FIG. 7 is a front view showing the car-side connection mechanism 60 and the regulating device main body 51 immediately before the first car door 32 and the second car door 33 reach the fully open position. FIG. 8 is a front view showing the car-side connection mechanism 60 and the regulating device main body 51 in a state where the first car door 32 and the second car door 33 have reached the fully open position.

[0069] The coupling mechanism roller 69 comes into contact with the regulating device main body 51 during the opening and closing operations of the first car door 32 and the second car door 33. Specifically, during the opening operation of the first car door 32 and the second car door 33, the coupling mechanism roller 69 comes into contact with the movable part 51a immediately before the first car door 32 and the second car door 33 reach the fully open position.

[0070] Thereafter, the movable part 51a is pushed up to the allowable position by the connecting mechanism roller 69, and the connecting mechanism roller 69 passes through the movable part 51a. In the state of Fig. 8, the closing operation of the first car door 32 and the second car door 33 due to the self-closing force of the first landing door 16 and the second landing door 17 is restricted by the connecting mechanism roller 69 coming into contact with the movable part 51a.

[0071] In a state in which the closing operations of the first car door 32 and the second car door 33 are restricted by the self-closing force of the first landing door 16 and the second landing door 17, the connecting mechanism roller 69 receives a reaction force from the regulating device main body 51 in the direction indicated by arrow A in Fig. 8. In this state, the inclination angle of the portion of the movable part 51a that comes into contact with the connecting mechanism roller 69 is set so that the direction of the reaction force from the regulating device main body 51 is closer to the door pocket-side vane 63 than the connecting member shaft 67a.

[0072] In such an elevator car door device 12, the regulating device main body 51 is provided on the car door girder 31 at a position where the linking mechanism roller 69 comes into contact. Therefore, by utilizing the linking mechanism roller 69, which is an originally necessary part, it is possible to easily provide the function of regulating the closing operation of the first car door 32 and the second car door 33 due to the self-closing force of the first landing door 16 and the second landing door 17.

[0073] As a result, for example, in an emergency elevator, even if a power outage occurs after a firefighter moves from the car 8 to the landing, the self-closing force of the first landing door 16 and the second landing door 17 prevents the first car door 32 and the second car door 33 from closing.

[0074] Furthermore, the regulating device main body 51 is a leaf spring member, and therefore, the closing operation of the first car door 32 and the second car door 33 can be regulated with a simple configuration, thereby enabling cost reductions to be achieved.

[0075] Furthermore, the inclination angle of the portion of movable part 51a that comes into contact with connecting mechanism roller 69 is set so that the direction of the reaction force from regulating device main body 51 is closer to door pocket side vane 63 than to connecting member shaft 67a. Therefore, the reaction force from regulating device main body 51 prevents door pocket side vane 63 from being displaced in a direction away from door stop side vane 62. This makes it possible to more reliably maintain the connected state between first car door 32 and first landing door 16.

[0076] Furthermore, the spring force of the return spring portion 51b is set to a value closer to the self-closing force than an intermediate value between the self-closing force of the first landing door 16 and the second landing door 17 and the opening / closing force by the door motor 44. This makes it possible to smooth the normal opening and closing operation by the door motor 44 and suppress the generation of noise during the normal opening and closing operation.

[0077] Embodiment 2 9 is a front view of a part of a car door device 12 according to Embodiment 2, as seen from the landing side. In Embodiment 2, a regulating device 80 is used instead of the regulating device 50 in Embodiment 1. The regulating device 80 is provided on the car door girder 31.

[0078] The regulating device 80 of the second embodiment has a regulating device main body 81. That is, the regulating device 80 of the second embodiment is constituted by the regulating device main body 81.

[0079] Fig. 10 is a front view showing the regulating device main body 81 of Fig. 9. The regulating device main body 81 has a holder 82, a compression spring 83 as a return spring portion, and a movable member 84 as a movable portion.

[0080] The holder 82 is fixed to the car door rail 31. The holder 82 is provided with a receiving hole 82a. The compression spring 83 is received in the receiving hole 82a. That is, the compression spring 83 is provided inside the holder 82. The upper end of the compression spring 83 is fixed to the bottom surface of the receiving hole 82a.

[0081] The movable member 84 is fixed to the lower end of the compression spring 83. A ball is used as the movable member 84. That is, the restricting device main body 81 of the second embodiment is a ball plunger.

[0082] Further, the movable member 84 is displaceable in the vertical direction with respect to the holder 82 between the restricting position shown in FIG. 10 and the allowable position shown in FIG. 11. The restricting position is a position where the movable member 84 protrudes downward from the lower end of the holder 82.

[0083] The closing operation of the first car door 32 and the second car door 33 by the self-closing force of the first landing door 16 and the second landing door 17 is restricted when the connecting mechanism roller 69 hits the movable member 84 located at the restricting position.

[0084] The allowable position is a position where the movable member 84 is retracted into the holder 82. The compression spring 83 returns the movable member 84 from the allowable position to the restricting position.

[0085] When the first car door 32 and the second car door 33 are opened and closed by the door motor 44, the movable member 84 is pushed by the connecting mechanism roller 69, so that the compression spring 83 is elastically deformed and the movable member 84 is displaced to the allowable position. As a result, the connecting mechanism roller 69 is allowed to pass through the movable member 84, and the opening and closing operations of the first car door 32 and the second car door 33 are allowed.

[0086] The spring force of the compression spring 83 is set to a value larger than the self-closing force of the first landing door 16 and the second landing door 17 and smaller than the opening and closing force by the door motor 44. Further, the spring force of the compression spring 83 is set to a value closer to the self-closing force than the intermediate value between the self-closing force of the first landing door 16 and the second landing door 17 and the opening and closing force by the door motor 44.

[0087] The other configurations and operations in Embodiment 2 are the same as those in Embodiment 1.

[0088] Even with such a regulating device 80, the same effects as those in Embodiment 1 can be obtained.

[0089] Further, the compression spring 83 is housed in the holder 82. Also, the movable member 84 is fixed to the compression spring 83. Therefore, the expansion and contraction of the compression spring 83 is guided by the holder 82, and the movable member 84 can be properly displaced between the regulating position and the allowable position.

[0090] Also, the movable member 84 is a ball. Therefore, a commercially available ball plunger can be used as the regulating device main body 81, and cost reduction can be achieved.

[0091] In Embodiments 1 and 2, the positions of the first car door 32 and the second car door 33 whose closing operations are regulated by the regulating devices 50 and 80 are preferably the fully open positions, but are not necessarily limited to the fully open positions, and may be positions closer to the door stop side, that is, the door closing side, than the fully open position.

[0092] Also, the regulating devices 50 and 80 in Embodiments 1 and 2 can be installed not only in newly installed elevators but also in existing elevators.

[0093] Also, in Embodiments 1 and 2, the number of car doors is not limited to two, and may be one or three or more.

[0094] Also, in Embodiments 1 and 2, the center-opening type car door device 12 is shown, but the regulating devices 50 and 80 can also be applied to the side-opening type car door device 12.

[0095] Also, the layout of the entire elevator is not limited to the layout in FIG. 1. For example, the roping method may be a 2:1 roping method.

[0096] The elevator may also be a machine room-less elevator, a double-deck elevator, a one-shaft multi-car elevator, etc. In a one-shaft multi-car elevator, an upper car and a lower car located directly below the upper car each independently ascend and descend in a common elevator shaft. [Explanation of symbols]

[0097] 8 car, 12 car door device, 16 first landing door, 17 second landing door, 31 car door beam, 32 first car door, 33 second car door, 44 door motor, 50, 80 regulating device, 51, 81 regulating device body, 51a movable part, 51b return spring part, 60 car side connecting mechanism, 62 door stop side vane, 63 door pocket side vane, 64 vane drive mechanism, 67 connecting member, 67a connecting member shaft, 69 connecting mechanism roller, 83 compression spring (return spring part), 84 movable member (movable part).

Claims

1. a car door beam provided on the car; a door motor provided in the car; a car door provided on the car and opened and closed by the door motor; a car-side coupling mechanism that couples the car door to a landing door and links the landing door with the opening and closing operation of the car door; and a restricting device that restricts the closing operation of the car door due to the self-closing force of the landing door while allowing the opening and closing operation of the car door by the door motor; Equipped with The car side connecting mechanism is A linkage roller provided on the car door and moving together with the car door It has the regulating device has a regulating device main body provided on the car door girder, The regulating device body is a movable portion that is displaceable between a restricted position and an allowed position; a return spring portion that returns the movable portion from the permitted position to the restricted position; It has a closing operation of the car door due to a self-closing force of the landing door is regulated by the coupling mechanism roller contacting the movable part positioned at the regulating position, When the car door is opened or closed by the door motor, the movable part is pushed by the connecting mechanism roller, causing the return spring part to elastically deform and displacing the movable part to the allowable position.

2. 2. The elevator car door apparatus according to claim 1, wherein the regulating device is a leaf spring member.

3. The car side connecting mechanism is a door stop vane provided on the car door; a door pocket side vane provided on the car door so as to be displaceable in a direction toward or away from the door stop side vane, and sandwiching an interlock roller between the door pocket side vane and the door stop side vane; a vane drive mechanism that displaces the door pocket side vane in conjunction with the opening and closing operation of the car door; and The vane drive mechanism includes: The coupling mechanism roller; a connecting member provided on the car door and rotatable about a connecting member axis, the connecting member being provided with the connecting mechanism roller; It has 3. The elevator car door apparatus according to claim 2, wherein the inclination angle of the portion of the movable part that contacts the connecting mechanism roller is set so that the direction of the reaction force from the regulating device body to the connecting mechanism roller is toward the door pocket vane side rather than the connecting member axis.

Images