Car door device of elevator

Abstract

To obtain a car door device of an elevator which can easily attain a function for restricting closed operations of car doors by self-closing force of landing doors.SOLUTION: A restriction device 50 is provided within a sill groove 36a at a door pocket side end of a car sill 36. Further, the restriction device 50 restricts 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 while allowing opening / closing operations of the first car door 32 and the second car door 33 by a door motor 44. The restriction device 50 has a restriction device main part 51. The restriction device main part 51 is formed by a plate spring member.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 arranged 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 arrange 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 is provided in the car, and includes a car sill provided with a sill groove, a door motor provided in the car, a car door body, and a door leg provided at the lower part of the car door body and inserted into the sill groove. It has a car door that opens and closes by a door motor, and a regulating device that regulates the closing operation of the car door by the self-closing force of the landing door while allowing the opening and closing operation of the car door by the door motor. The regulating device has a regulating device body provided in the sill groove. The regulating device body has a movable part that can be displaced between a regulating position that is above the lower end of the door leg and an allowing position that is below the regulating 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 by the self-closing force of the landing door is regulated by the door leg hitting the movable part located at the regulating position. When the car door is opened and closed by the door motor, the return spring part is elastically deformed and the movable part is displaced to the allowing position by the door leg pushing the movable part. Further, the car door device of the elevator according to the present disclosure is provided in the car, and includes a car sill provided with a sill groove, a door motor provided in the car, a car door body, and a door leg provided at the lower part of the car door body and inserted into the sill groove. It has a car door that opens and closes by a door motor, and a regulating device that regulates the closing operation of the car door by the self-closing force of the landing door while allowing the opening and closing operation of the car door by the door motor. The regulating device has a regulating device body provided in the sill groove and a protruding member provided at the lower part of the car door body on the door contact side rather than the door leg side and protruding into the sill groove. The distance between the lower end of the protruding member and the bottom surface of the sill groove is smaller than the distance between the lower end of the door leg and the bottom surface. The regulating device body has a movable part that can be displaced between a regulating position that is above the lower end of the protruding member and below the lower end of the door leg and an allowing position that is below the regulating 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 by the self-closing force of the landing door is regulated by the protruding member hitting the movable part located at the regulating position. When the car door is opened and closed by the door motor, the return spring part is elastically deformed and the movable part is displaced to the allowing position by the protruding member pushing the movable part.

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 restricting the closing operation of the car door by 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

Figure 12

Figure 13

Modes for Carrying Out the Invention

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

[0010] The hoist 3 has a drive sheave 6, a hoist motor (not shown), and a hoist brake (not shown). The hoist motor rotates the drive sheave 6. The hoist brake keeps the drive sheave 6 stationary. The hoist brake also brakes the rotation of the drive sheave 6.

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

[0012] The car 8 and counterweight 9 are suspended by a suspension body 7, and move up and down in the elevator shaft 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] A pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are installed in the hoistway 1. The pair of car guide rails guide the rising and falling of the car 8. The pair of counterweight guide rails guide the rising and falling of the counterweight 9.

[0014] The car 8 has a car frame 10, a car chamber 11, and a car door device 12. A suspension body 7 is connected to the car frame 10. The car chamber 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] At each of the landing platforms with multiple floors, a landing door device 14 is provided. Each landing door device 14 opens and closes 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 sill 15, a first landing door 16, a second landing door 17, a landing door linkage mechanism 18, an interlock device 19, and a door closer (not shown).

[0017] At each of the landings of multiple floors, a landing entrance 14a is provided. The landing door sill 15 is fixed above the landing entrance 14a. A landing door rail 15a is provided on the landing door sill 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, and is the left - right direction in FIG. 2.

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

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

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

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

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

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

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

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

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

[0027] The catch 27 is fixed to the landing door sill 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 hooked on the catch 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, i.e., 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 the closer weight.

[0030] Fig. 3 is a front view of the car door device 12 of 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 coupling mechanism (not shown), a car sill 36, and a regulating device 50.

[0031] A car entrance 11a is provided in the car chamber 11. A car door girder 31 is fixed to the car 8 above the car entrance 11a. A car door rail 31a is provided on the car door girder 31. The car door rail 31a is parallel to the width direction of the car entrance 11a and is horizontal. The width direction of the car entrance 11a is a direction parallel to the opening and 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 a car door rail 31a. When the car entrance 11a is opened or closed, the first car door 32 and the second car door 33 are guided by the car door rail 31a and move in opposite directions.

[0033] Each of the first car door 32 and the second car door 33 has a car door body 41, a car door hanger 42, and a plurality of door legs 43. Each car door body 41 opens and closes the car entrance 11a.

[0034] The car door hanger 42 is provided at 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 upthrust rollers 42c.

[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. Further, each hanger roller 42b moves while rolling on the car door rail 31a during the opening and closing operations of the first car door 32 and the second car door 33.

[0037] Each upthrust roller 42c is provided on the hanger plate 42a directly below the corresponding hanger roller 42b. Also, each upthrust roller 42c is disposed below the car door rail 31a. Further, each upthrust roller 42c prevents the corresponding hanger roller 42b from falling off the car door rail 31a.

[0038] The leg 43 of each door is provided at the lower part of the car door body 41. Also, each leg 43 of the door protrudes downward from the lower end of the car door body 41.

[0039] The car door drive mechanism 34 is provided on the car door beam 31. Also, the car door drive mechanism 34 has a door motor 44, a first car pulley 45, a second car pulley 46, an endless drive belt 47, a first car door connection fitting 48, and a second car door connection fitting 49.

[0040] The door motor 44 is fixed to the car door beam 31. The first car pulley 45 is attached to the rotation shaft of the door motor 44. The door motor 44 rotates the first car pulley 45.

[0041] The second car pulley 46 is provided on the car door girder 31 at an interval in the width direction of the car entrance 11a with respect to the first car pulley 45. The drive belt 47 is wound around the first car pulley 45 and the second car pulley 46.

[0042] The first car door 32 is connected to the lower part of the drive belt 47 via the first car door connection fitting 48. The second car door 33 is connected to the upper part of the drive belt 47 via the second car door connection fitting 49.

[0043] 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 opposite directions to each other.

[0044] The car side connection mechanism is provided between the first car door 32 and the car door girder 31. When the first car door 32 is opened, the movable side interlock roller 30 and the fixed side interlock roller 29 are clamped by the car side connection mechanism. That is, the car side connection mechanism is connected to the interlock device 19. Thereby, the interlock latch 28 rotates clockwise in FIG. 2, and the interlock device 19 is unlocked.

[0045] The car sill 36 is provided at the lower part of the car entrance 11a. FIG. 3 shows a cross section of the car sill 36. The car sill 36 is provided with a sill groove 36a. The legs 43 of each door are inserted into the sill groove 36a. Thereby, the car sill 36 guides the lower end portions of the first car door 32 and the second car door 33 during the opening and closing operations of the first car door 32 and the second car door 33.

[0046] The regulating device 50 is provided in the sill groove 36a at the door pocket side end of the car sill 36. Further, the regulating device 50 regulates 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 while allowing the opening and closing operations of the first car door 32 and the second car door 33 by the door motor 44.

[0047] The regulating device 50 of Embodiment 1 has a regulating device main body 51. That is, the regulating device 50 of Embodiment 1 is constituted by the regulating device main body 51. The regulating device main body 51 is a leaf spring member formed by bending a strip-shaped spring steel.

[0048] FIG. 4 is a side view showing the regulating device 50 in FIG. 3, and shows the state of the regulating device 50 when the second car door 33 is in the fully open position. FIG. 5 is a side view showing the state in which the regulating device main body 51 in FIG. 4 is elastically deformed.

[0049] Further, 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 the regulating position shown in FIG. 4 and the allowable position shown in FIG. 5.

[0050] The regulating position is above the lower end of the door leg 43. That is, when the movable part 51a is in the regulating position, the distance between the upper end of the movable part 51a and the bottom surface 36b of the threshold groove 36a is larger than the distance between the lower end of the door leg 43 and the bottom surface 36b.

[0051] The allowable position is lower than the regulating position, that is, closer to the bottom surface 36b than the regulating position. The end of the return spring part 51b on the side opposite to the movable part 51a is fixed to the bottom surface 36b. The return spring part 51b returns the movable part 51a from the allowable position to the regulating position.

[0052] 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 as shown in FIG. 4 by the door leg 43 hitting the movable part 51a located in the regulating position.

[0053] At this time, the door contact side end of the door leg 43 located closest to the door pocket among the plurality of door legs 43 provided on the second car door 33 hits the movable part 51a.

[0054] 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 door leg 43, so that the return spring part 51b is elastically deformed and the movable part 51a is displaced to the allowable position. As a result, the door leg 43 is allowed to pass through the movable part 51a, and the opening and closing operations of the first car door 32 and the second car door 33 are allowed.

[0055] The opening and closing force by the door motor 44 is larger 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 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 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.

[0056] In such an elevator car door device 12, the regulating device 50 is provided in the threshold groove 36a. Therefore, by using the door leg 43 which is originally a necessary part, it is possible to easily provide a function of regulating 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.

[0057] As a result, for example, even when a power failure occurs after a firefighter moves from the car 8 to the landing in an emergency elevator, the closing operation of the first car door 32 and the second car door 33 is suppressed by the self-closing force of the first landing door 16 and the second landing door 17.

[0058] Further, the regulating device main body 51 is a leaf spring member. Therefore, the regulating device main body 51 can be easily installed even in the narrow threshold groove 36a. Also, the closing operation of the first car door 32 and the second car door 33 can be regulated with a simple configuration, and cost reduction can be achieved.

[0059] When 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 door leg 43 located closest to the door pocket side hits the movable part 51a. Therefore, the number of collisions between the regulating device main body 51 and the door leg 43 during the normal opening and closing operations by the door motor 44 can be minimized, and the generation of noise can be suppressed.

[0060] 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. For this reason, the normal opening and closing operations by the door motor 44 can be made smooth, and the generation of noise during the normal opening and closing operations can be suppressed.

[0061] Embodiment 2. Next, FIG. 6 is a front view of the car door device 12 according to Embodiment 2 as viewed from the landing side. FIG. 7 is a front view showing a state in which the first car door 32 and the second car door 33 in FIG. 6 have moved to the fully open position. FIG. 8 is a side view showing the regulating device 50 in FIG. 7.

[0062] The regulating device 50 of Embodiment 2 has a regulating device main body 51 similar to that of Embodiment 1 and a rod-shaped protruding member 52.

[0063] The protruding member 52 is provided at the lower part of the car door main body 41 in the second car door 33. Also, the protruding member 52 is arranged closer to the door strike side than the door leg 43 located closest to the door strike side among the plurality of door legs 43 in the second car door 33.

[0064] Also, the protruding member 52 protrudes into the threshold groove 36a. The distance between the lower end of the protruding member 52 and the bottom surface 36b of the threshold groove 36a is smaller than the distance between the lower end of the door leg 43 and the bottom surface 36b.

[0065] The regulating device main body 51 is disposed directly below the second car door 33 located at the fully closed position. In the second embodiment, the regulating position of the movable part 51a is above the lower end of the protruding member 52 and below the lower end of the door leg 43. Therefore, the regulating device main body 51 does not interfere with any of the door legs 43 during the opening and closing operations of the first car door 32 and the second car door 33.

[0066] As shown in FIG. 8, the closing operations 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 are regulated by the protruding member 52 hitting the movable part 51a located at the regulating position.

[0067] During the opening and closing operations of the first car door 32 and the second car door 33 by the door motor 44, the return spring part 51b is elastically deformed and the movable part 51a is displaced to the allowable position by the protruding member 52 pushing the movable part 51a. Thereby, the protruding member 52 is allowed to pass through the movable part 51a, and the opening and closing operations of the first car door 32 and the second car door 33 are allowed.

[0068] Other configurations and operations in the second embodiment are the same as those in the first embodiment.

[0069] In such a car door device 12, the protruding member 52 is disposed closer to the door stop side than the door leg 43. Therefore, the regulating device main body 51 and the protruding member 52 can be disposed at positions accessible from the landing. Accordingly, it is possible to easily provide a function of regulating the closing operations 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.

[0070] Also, the adjustment and replacement of the regulating device main body 51 and the protruding member 52 can be easily performed from the landing.

[0071] Also, the regulating device main body 51 does not interfere with any of the door legs 43. Therefore, wear and damage of the door legs 43 can be suppressed.

[0072] Embodiment 3. FIG. 9 is a front view showing a main part of the cage door device 12 according to Embodiment 3. FIG. 10 is a front view showing a state in which the second cage door 33 in FIG. 9 is moving to the fully open position.

[0073] In Embodiment 3, a regulating device 55 is used instead of the regulating device 50 in Embodiment 1. The regulating device 55 is provided in the sill groove 36a at the door pocket side end of the cage sill 36.

[0074] The regulating device 55 of Embodiment 3 has a regulating device main body 56. That is, the regulating device 55 of Embodiment 3 is constituted by the regulating device main body 56.

[0075] FIG. 11 is a front view showing the regulating device main body 56 in FIG. 9. FIG. 12 is a front view showing a main part of the regulating device main body 56 in FIG. 10. The regulating device main body 56 has a holder 57, a push spring 58 as a return spring part, and a movable member 59 as a movable part.

[0076] The holder 57 is erected on the bottom surface 36b of the sill groove 36a. The holder 57 is provided with a receiving hole 57a. The push spring 58 is received in the receiving hole 57a. That is, the push spring 58 is provided inside the holder 57.

[0077] The movable member 59 is in contact with the upper end of the push spring 58. A ball is used as the movable member 59. That is, the regulating device main body 56 of Embodiment 3 is a ball plunger.

[0078] Further, the movable member 59 is displaceable in the vertical direction with respect to the holder 57 between the regulating position shown in FIGS. 9 and 11 and the allowable position shown in FIGS. 10 and 12.

[0079] The regulating position is a position where the movable member 59 protrudes upward from the upper end of the holder 57. Also, the regulating position is above the lower end of the door leg 43.

[0080] 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 door legs 43 hitting the movable member 59 positioned at the restricting position.

[0081] The allowable position is a position where the movable member 59 is retracted into the holder 57. The allowable position is a position lower than the restricted position, i.e., a position closer to the bottom surface 36b than the restricted position. The compression spring 58 returns the movable member 59 from the allowable position to the restricted position.

[0082] When the first car door 32 and the second car door 33 are opened or closed by the door motor 44, the movable member 59 is pushed by the door legs 43, causing the compression spring 58 to elastically deform and displacing the movable member 59 to an allowable position. This allows the door legs 43 to pass through the movable member 59, and the opening and closing operations of the first car door 32 and the second car door 33 are allowed.

[0083] The spring force of the push spring 58 is set to a value that is greater than the self-closing force of the first landing door 16 and the second landing door 17 and smaller than the opening / closing force by the door motor 44. In addition, the spring force of the push spring 58 is set to a value that is 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.

[0084] Other configurations and operations in the third embodiment are the same as those in the first embodiment.

[0085] With this type of restricting device 55, the same effects as those of the first embodiment can be obtained.

[0086] Compression spring 58 is housed in holder 57. Movable member 59 is in contact with compression spring 58. Therefore, the expansion and contraction of compression spring 58 is guided by holder 57, allowing movable member 59 to be appropriately displaced between the restricted position and the permitted position.

[0087] Further, the movable member 59 is a ball. Therefore, a commercially available ball plunger can be used as the restricting device main body 56, and cost reduction can be achieved.

[0088] Embodiment 4. Next, FIG. 13 is a front view showing a main part of the car door device 12 according to Embodiment 4. In Embodiment 4, a restricting device main body 56 similar to that in Embodiment 3 is used instead of the restricting device main body 51 in Embodiment 2. That is, the restricting device 55 in Embodiment 4 has a restricting device main body 56 and a protruding member 52.

[0089] The closing operations 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 are restricted by the protruding member 52 hitting the movable member 59 located at the restricting position.

[0090] When the first car door 32 and the second car door 33 are opened and closed by the door motor 44, the movable member 59 is pushed by the protruding member 52, so that the compression spring 58 is elastically deformed and the movable member 59 is displaced to the allowable position. As a result, the protruding member 52 is allowed to pass through the movable member 59, and the opening and closing operations of the first car door 32 and the second car door 33 are allowed.

[0091] Other configurations and operations in Embodiment 4 are the same as those in Embodiment 2.

[0092] Even with such a restricting device 55, the same effects as those in Embodiment 2 or Embodiment 3 can be obtained.

[0093] In addition, in Embodiments 1 to 4, the positions of the first car door 32 and the second car door 33 whose closing operations are restricted by the restricting device 50 or the restricting device 55 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 than the fully open position, that is, positions on the door closing side.

[0094] In addition, the regulating devices 50 in Embodiments 1 and 2 and the regulating devices 55 in Embodiments 3 and 4 can be installed not only in newly installed elevators but also in existing elevators.

[0095] In addition, in Embodiments 1 to 4, the number of car doors is not limited to two, and may be one or three or more.

[0096] In addition, in Embodiments 1 to 4, the center-opening type car door device 12 is shown, but the regulating device 50 or the regulating device 55 can also be applied to a single-opening type car door device 12.

[0097] In addition, the layout of the entire elevator is not limited to the layout of FIG. 1. For example, the roping method may be a 2:1 roping method.

[0098] In addition, the elevator may be a machine-roomless elevator, a double-deck elevator, a one-shaft multi-car type elevator, or the like. The one-shaft multi-car type is a method in which an upper car and a lower car arranged directly below the upper car move up and down in a common hoistway independently.

Explanation of Signs

[0099] 8 car, 12 car door device, 16 first landing door, 17 second landing door, 32 first car door, 33 second car door, 41 car door body, 43 door leg, 44 door motor, 50, 55 regulating device, 51, 56 regulating device body, 51a movable part, 51b return spring part, 52 protruding member, 58 compression spring (return spring part), 59 movable member (movable part).

Claims

1. A car sill provided in a car and having a threshold groove, A door motor provided in the car, A car door including a car door main body and door legs provided at a lower portion of the car door main body and inserted into the threshold groove, and the car door being opened and closed by the door motor, and A regulating device that regulates the closing operation of the car door by the self-closing force of the landing door while allowing the opening and closing operation of the car door by the door motor Comprising, The regulating device has a regulating device main body provided in the threshold groove, The regulating device main body, A movable part displaceable between a regulating position above the lower end of the door leg and a permitting position below the regulating position, and A return spring part for returning the movable part from the permitting position to the regulating position Having, The closing operation of the car door by the self-closing force of the landing door is regulated by the door leg hitting the movable part located at the regulating position, An elevator car door device in which, when the car door is opened and closed by the door motor, the return spring part is elastically deformed and the movable part is displaced to the permitting position by the door leg pushing the movable part.

2. A car sill provided in a car and having a threshold groove, A door motor provided in the car, A car door including a car door main body and door legs provided at a lower portion of the car door main body and inserted into the threshold groove, and the car door being opened and closed by the door motor, and A regulating device that regulates the closing operation of the car door by the self-closing force of the landing door while allowing the opening and closing operation of the car door by the door motor Comprising, The regulating device, A regulating device main body provided in the threshold groove, and A protruding member provided at a lower portion of the car door main body on the door contact side with respect to the door leg and protruding into the threshold groove Having, The distance between the lower end of the protruding member and the bottom surface of the threshold groove is smaller than the distance between the lower end of the door leg and the bottom surface, The regulating device main body, A movable part displaceable between a regulating position above the lower end of the protruding member and below the lower end of the door leg and a permitting position below the regulating position, and A return spring part for returning the movable part from the permitting position to the regulating position Having, The closing operation of the car door due to the self-closing force of the landing door is restricted by the protruding member hitting the movable part located at the restricted position. An elevator car door device in which, when the car door is opened and closed by the door motor, the movable part is pushed by the protruding member, so that the return spring part is elastically deformed and the movable part is displaced to the allowable position.

3. The elevator car door device according to claim 1 or claim 2, wherein the restricting device is a leaf spring member.

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