Elevator door coupling device and car door device

Abstract

The objective is to obtain an elevator door coupling device and car door device that can be easily applied to two different types of landing door devices. [Solution] The upper link 51 has a rotating shaft portion 51a, a first rod connecting portion 51d, and a second rod connecting portion 51e. The second rod connecting portion 51e is provided on the opposite side of the rotating shaft portion 51a from the first rod connecting portion 51d. The rod 55 is selectively connected to either the first rod connecting portion 51d or the second rod connecting portion 51e, depending on the type of landing door device 14.

Description

Technical Field

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

Background Art

[0002] Conventional elevator car door devices have a movable blade and a fixed blade. During the door opening operation, a pair of interlock rollers of the landing door device are sandwiched between the movable blade and the fixed blade, and the landing door is connected to the car door (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 conventional landing door devices, there are a reduced connection type and an enlarged connection type. In the reduced connection type, the distance between a pair of vanes of the car door device is reduced, and a pair of interlock rollers are sandwiched between the pair of vanes, and the landing door is connected to the car door. In the enlarged connection type, between a pair of rollers fixed to the landing door, the distance between the pair of vanes is expanded, and the landing door is connected to the car door.

[0005] The door connection device of the conventional car door device as described above can be applied to the landing door device of the reduced connection type, but cannot be applied to the landing door device of the enlarged connection type. For this reason, for the landing door device of the enlarged connection type, a door connection device with a different configuration is required, and the number of component types increases.

[0006] This disclosure was made to solve the above-mentioned problems and aims to provide an elevator door coupling device and car door device that can be easily applied to two different types of landing door devices. [Means for solving the problem]

[0007] The elevator door coupling device according to this disclosure comprises a rotating shaft portion, a first vane coupling portion, a first rod coupling portion provided on the same side as the first vane coupling portion in the opening and closing direction of the car door relative to the rotating shaft portion, a second vane coupling portion provided on the opposite side of the rotating shaft portion from the first vane coupling portion in the opening and closing direction of the car door relative to the rotating shaft portion, and a second rod coupling portion provided on the opposite side of the rotating shaft portion from the first rod coupling portion in the opening and closing direction of the car door relative to the rotating shaft portion, and a link that is rotatably attached to the car door around the rotating shaft portion, and a link that is rotatably connected to the first vane coupling portion, and the rotation of the link The car door is connected to the landing door by a link interlocking mechanism, which is provided between the car door frame and the car door, and is connected to the car door frame and the car door, and is provided by a link interlocking mechanism that displaces the rod vertically in conjunction with the opening and closing operation of the car door, thereby changing the distance between the first vane and the second vane. [Effects of the Invention]

[0008] The elevator door coupling device and car door device of this disclosure can be easily applied to two different types of landing door devices. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic diagram showing the elevator according to Embodiment 1. [Figure 2] Figure 1 is a schematic front view showing the main parts of an example of a landing door device. [Figure 3] This is a schematic front view showing the main components of another example of the landing door device shown in Figure 1. [Figure 4] Figure 1 is a front view of the main part of the car door mechanism as seen from the landing side. [Figure 5] This is a front view showing an enlarged view of the upper link, lower link, first vane, and second vane in Figure 4. [Figure 6] Figure 4 is a front view showing an enlarged view of the linkage mechanism. [Figure 7] Figure 4 is a front view showing the door coupling device during the opening operation of the first cage door. [Figure 8] This is a front view showing the car door device of Figure 4 applied to the landing door device of Figure 3. [Figure 9] Figure 8 is a front view showing the door coupling device during the opening operation of the first cage door. [Figure 10] This is a front view of the main part of the car door device according to a first modification of Embodiment 1, as seen from the landing side. [Figure 11] This is a front view showing an enlarged view of the linkage mechanism in Figure 10. [Figure 12] This is a front view of the main part of the car door device according to a second modification of Embodiment 1, as seen from the landing side. [Figure 13] This is a front view showing a door coupling device according to Embodiment 2. [Figure 14] This is a front view showing an enlarged view of the rotating cam in Figure 13. [Figure 15] Figure 14 is a side view of the rotating cam as seen along arrow XII. [Figure 16] This is a front view showing the rod of the door coupling device according to Embodiment 3. [Figure 17] This is a front view showing a door coupling device according to Embodiment 4. [Figure 18] Figure 17 is a front view showing the door coupling device during the opening operation of the first cage door. [Figure 19] This is a front view showing the door coupling device of Figure 17 applied to the landing door device of Figure 3. [Figure 20]It is a front view showing a door connecting device during the opening operation of the first car door in FIG. 19. [Figure 21] It is a front view showing a door connecting device according to Embodiment 5. [Figure 22] It is a front view showing a door connecting device during the opening operation of the first car door in FIG. 21. [Figure 23] It is a front view showing a state where the door connecting device in FIG. 21 is applied to the landing door device in FIG. 3. [Figure 24] It is a front view showing a door connecting device during the opening operation of the first car door in FIG. 23.

Mode for Carrying Out the Invention

[0010] 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.

[0011] 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 stationary state of the drive sheave 6. Also, the hoisting machine brake brakes the rotation of the drive sheave 6.

[0012] 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.

[0013] 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.

[0014] Within the elevator shaft 1, there is a pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown). The pair of car guide rails guide the movement of the car 8. The pair of counterweight guide rails guide the movement of the counterweight 9.

[0015] The elevator car 8 comprises a car frame 10, a car compartment 11, and a car door device 12. A suspension system 7 is connected to the car frame 10. The car compartment 11 is supported by the car frame 10. A door controller 13 is provided on the elevator car 8. The door controller 13 controls the car door device 12.

[0016] Each of the landings on multiple floors is equipped with a landing door device 14. Each landing door device 14 opens and closes in conjunction with the car door device 12 when the elevator car 8 lands on the floor.

[0017] Figure 2 is a schematic front view showing the main parts of an example of the landing door device 14 shown in Figure 1, and is a view of an enlarged connecting type landing door device as seen from the elevator shaft 1 side. Each landing door device 14 has a landing door frame 15, a first landing door 16, a second landing door 17, and a landing door interlocking mechanism 18.

[0018] Each of the landings on multiple floors is provided with a landing entrance 14a. A landing door frame 15 is fixed to the top of the landing entrance 14a. A landing door rail 15a is provided on the landing door frame 15. The landing door rail 15a is arranged parallel to the width direction of the landing entrance 14a and horizontally. The width direction of the landing entrance 14a is parallel to the opening and closing direction of the first landing door 16 and the second landing door 17, and is the left-right direction in Figure 2.

[0019] The first landing door 16 and the second landing door 17 are suspended from the landing door rail 15a. Furthermore, when the landing entrance / exit 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.

[0020] 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.

[0021] The landing door hanger 21 is fixed to the top of the landing door body 20. The landing door hanger 21 is also hung on the landing door rail 15a.

[0022] The landing door interlocking mechanism 18 includes a first landing pulley 22, a second landing pulley 23, an endless interlocking rope 24, a first landing door connecting fitting 25, and a second landing door connecting fitting 26.

[0023] The first landing pulley 22 and the second landing pulley 23 are installed on the landing door frame 15, spaced apart from each other 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.

[0024] The first landing door 16 is connected to the lower part of the interlocking rope 24 via the first landing door connecting fitting 25. The second landing door 17 is connected to the upper part of the interlocking rope 24 via the second landing door connecting fitting 26.

[0025] 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 the opposite direction to the first landing door 16. In other words, the landing door interlocking mechanism 18 links the opening and closing operation of the first landing door 16 to the operation of the second landing door 17.

[0026] A pair of connecting rollers 40 are attached to the landing door body 20 of the first landing door 16. The pair of connecting rollers 40 are spaced apart from each other in the width direction of the landing entrance 14a. Each of the pair of connecting rollers 40 is a landing-side connecting member.

[0027] Figure 3 is a schematic front view showing the main components of another example of the landing door device 14 of Figure 1, and is a view of a reduced-length connecting type landing door device as seen from the hoistway 1 side. Each landing door device 14 in this example has a landing door frame 15, a first landing door 16, a second landing door 17, a landing door interlocking mechanism 18, and an interlock device 19. In addition, the landing door body 20 of the first landing door 16 is not provided with a pair of connecting rollers 40.

[0028] The interlock device 19 is installed between the landing door frame 15 and the first landing door 16. The interlock device 19 also prevents the landing entrance 14a from being opened from the landing side when the elevator car 8 is not at the bottom.

[0029] Furthermore, the interlock device 19 includes a latch 27, an interlock latch 28, a fixed-side interlock roller 29, and a movable-side interlock roller 30. The fixed-side interlock roller 29 and the movable-side interlock roller 30 are landing-side connecting members, respectively.

[0030] The latch 27 is fixed to the landing door frame 15. The interlock latch 28 is rotatably mounted on 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 catches on the latch 27, thereby restricting the movement of the first landing door 16 and the second landing door 17 in the opening direction.

[0031] The fixed interlock roller 29 is positioned 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.

[0032] Figure 4 is a front view of the main part of the car door device 12 shown in Figure 1, as seen from the landing side, and shows the car door device 12 applied to the landing door device 14 in Figure 2.

[0033] The car door device 12 includes a car door frame 31, a first car door 32, a second car door 33, a car door drive mechanism 34, and a door coupling device 35.

[0034] The elevator car compartment 11 is provided with an elevator car entrance / exit 11a. The elevator car door frame 31 is attached to the elevator car 8 above the elevator car entrance / exit 11a.

[0035] A car door rail 31a is provided on the car door frame 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 parallel to the opening and closing direction of the first car door 32 and the second car door 33, and is the left-right direction in Figure 4.

[0036] The first car door 32 and the second car door 33 are suspended from the car door rail 31a. When the car entrance 11a is opened and 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. In Figure 4, the first car door 32 and the second car door 33 are both in the fully closed position.

[0037] Each of the first car door 32 and the second car door 33 has a car door body 38 and a car door hanger 39. Each car door body 38 opens and closes the car entrance 11a.

[0038] The cage door hanger 39 is fixed to the top of the cage door body 38. The cage door hanger 39 is also hung on the cage door rail 31a.

[0039] The car door hanger 39 has a pair of hanger rollers 39a. The pair of hanger rollers 39a move along the car door rail 31a while rolling during the opening and closing operations of the first car door 32 and the second car door 33.

[0040] The car door drive mechanism 34 is provided on the car door frame 31. The car door drive mechanism 34 also includes a door motor 41, a first car pulley 42, a second car pulley 43, an endless drive belt 44, a first car door connecting fitting 45, and a second car door connecting fitting 46.

[0041] The door motor 41 is fixed to the car door frame 31. The first car pulley 42 and the second car pulley 43 are provided on the car door frame 31, spaced apart from each other in the width direction of the car entrance 11a. The first car pulley 42 rotates when the driving force from the door motor 41 is transmitted to it. The driving force from the door motor 41 is transmitted to the first car pulley 42 at a reduced speed.

[0042] The drive belt 44 is wound around the first cage pulley 42 and the second cage pulley 43. The rotation of the first cage pulley 42 is transmitted to the second cage pulley 43 by the drive belt 44.

[0043] The first car door 32 is connected to the lower part of the drive belt 44 via the first car door connecting fitting 45. The second car door 33 is connected to the upper part of the drive belt 44 via the second car door connecting fitting 46.

[0044] When the first cage pulley 42 rotates, the drive belt 44 circulates, causing the first cage door 32 and the second cage door 33 to move in opposite directions.

[0045] The door coupling device 35 connects the first landing door 16 to the first car door 32 when the first car door 32 is opening or closing. When the car 8 lands at the landing, the first car door 32 begins to open, and the door coupling device 35 connects the first car door 32 to the first landing door 16.

[0046] The door coupling device 35 includes an upper link 51, a lower link 52, a first vane 53, a second vane 54, a rod 55, and a link interlocking mechanism 56.

[0047] The upper link 51 is rotatably attached to the first car door 32. The lower link 52 is rotatably attached to the first car door 32 below the upper link 51.

[0048] The first vane 53 and the second vane 54 are attached to the first car door 32 via the upper link 51 and the lower link 52.

[0049] The upper link 51 and the lower link 52 are parallel to each other. In addition, the upper link 51 and the lower link 52 are inclined with respect to the opening and closing direction of the first car door 32.

[0050] The first vane 53 and the second vane 54 are arranged parallel to each other and along the vertical direction. The upper link 51, the lower link 52, the first vane 53, and the second vane 54 constitute a parallel link mechanism.

[0051] The first vane 53 is displaced in the opening and closing direction of the first car door 32 by the rotation of the upper link 51 and the lower link 52. The second vane 54 is displaced in the opposite direction to the first vane 53 in the opening and closing direction of the first car door 32 by the rotation of the upper link 51 and the lower link 52.

[0052] When the elevator car 8 lands on the landing, the first vane 53 and the second vane 54 are passed between the pair of connecting rollers 40. From this state, when the first car door 32 begins to open, the upper link 51 and the lower link 52 rotate, and the first vane 53 and the second vane 54 move away from each other. Then, the first vane 53 and the second vane 54 come into contact with the pair of connecting rollers 40, and the first car door 32 is connected to the first landing door 16.

[0053] The lower end of the rod 55 is rotatably connected to the upper link 51. The upper end of the rod 55 is rotatably connected to the link interlocking mechanism 56.

[0054] The link interlocking mechanism 56 is provided between the car door frame 31 and the first car door 32. The link interlocking mechanism 56 also displaces the rod 55 vertically in conjunction with the opening and closing operation of the first car door 32, and rotates the upper link 51 via the rod 55.

[0055] Figure 5 is an enlarged front view showing the upper link 51, lower link 52, first vane 53, and second vane 54 of Figure 4. The upper link 51 has a rotating shaft portion 51a, a first vane connecting portion 51b, a second vane connecting portion 51c, a first rod connecting portion 51d, and a second rod connecting portion 51e.

[0056] The rotating shaft portion 51a is located in the center of the upper link 51 in the longitudinal direction. The upper link 51 is rotatable around the rotating shaft portion 51a relative to the first car door 32.

[0057] The first vane connecting portion 51b is provided at one end of the upper link 51. The second vane connecting portion 51c is provided at the other end of the upper link 51. That is, the second vane connecting portion 51c is provided on the opposite side from the first vane connecting portion 51b in the opening and closing direction of the first car door 32 with respect to the rotating shaft portion 51a. Furthermore, the first vane connecting portion 51b is provided below the rotating shaft portion 51a. Furthermore, the second vane connecting portion 51c is provided above the rotating shaft portion 51a.

[0058] The first rod connecting portion 51d is provided between the rotating shaft portion 51a and the first vane connecting portion 51b. That is, the first rod connecting portion 51d is provided on the same side as the first vane connecting portion 51b in the opening and closing direction of the first car door 32 with respect to the rotating shaft portion 51a.

[0059] The second rod connecting portion 51e is provided between the rotating shaft portion 51a and the second vane connecting portion 51c. That is, the second rod connecting portion 51e is provided on the same side as the second vane connecting portion 51c in the opening and closing direction of the first car door 32, with respect to the rotating shaft portion 51a, and on the opposite side from the first rod connecting portion 51d.

[0060] The first vane 53 is rotatably connected to the first vane connecting portion 51b. The second vane 54 is rotatably connected to the second vane connecting portion 51c.

[0061] The lower end of the rod 55 is selectively connected to either the first rod connecting portion 51d or the second rod connecting portion 51e, depending on the type of landing door device 14. In Figure 5, the rod 55 is rotatably connected to the first rod connecting portion 51d.

[0062] The longitudinal center of the lower link 52 is rotatably connected to the first car door 32 directly below the rotating shaft portion 51a. The first vane 53 is rotatably connected to one end of the lower link 52 directly below the first vane connecting portion 51b. The second vane 54 is rotatably connected to the other end of the lower link 52 directly below the second vane connecting portion 51c.

[0063] Figure 6 is an enlarged front view showing the link interlocking mechanism 56 of Figure 4. Figure 7 is a front view showing the door coupling device 35 during the opening operation of the first car door 32 of Figure 4.

[0064] The link interlocking mechanism 56 is located above the first vane 53 and the second vane 54. The link interlocking mechanism 56 also includes a base plate 61, a rotating cam 62, a cam roller 63, a mounting plate 64, a fixed cam 65, a tension spring 66, and a stopper 67.

[0065] The base plate 61 is fixed to the upper part of the car door hanger 39 on the first car door 32. The upper end of the base plate 61 protrudes above the upper end of the car door hanger 39.

[0066] The rotating cam 62 is mounted on the first car door 32 via a base plate 61. The rotating cam 62 is rotatable relative to the first car door 32 between a first position shown in Figure 6 and a second position shown in Figure 7. The cam roller 63 is rotatably mounted on the rotating cam 62.

[0067] The mounting plate 64 is fixed to the rotating cam 62. The upper end of the rod 55 is rotatably connected to the rotating cam 62 via the mounting plate 64.

[0068] The fixed cam 65 is fixed to the car door frame 31. The fixed cam 65 is provided with a cam groove 65a. When the first car door 32 is in the fully closed position, the cam roller 63 is inside the cam groove 65a. This holds the rotating cam 62 in the first position.

[0069] When the first cage door 32 is opened, the rotating cam 62 rotates to the second position clockwise in Figure 6, causing the rod 55 to be pulled up.

[0070] When the rod 55 is pulled up, the upper link 51 and the lower link 52 rotate clockwise in Figure 7, and the distance between the first vane 53 and the second vane 54 increases. Then, as shown in Figure 7, the first vane 53 and the second vane 54 come into contact with the pair of connecting rollers 40, and the first landing door 16 is connected to the first car door 32.

[0071] The tension spring 66 is provided between the base plate 61 and the rotating cam 62. The tension spring 66 suppresses the movement of the first vane 53 and the second vane 54 due to vibrations when the car 8 is raised and lowered. This prevents the first vane 53 and the second vane 54 from interfering with the pair of connecting rollers 40 when the car 8 is raised and lowered.

[0072] The stopper 67 is attached to the base plate 61. When the rotating cam 62 rotates to the second position, it hits the stopper 67. In other words, the stopper 67 prevents the rotating cam 62 from rotating beyond the second position to the opposite side of the first position.

[0073] When the rotating cam 62 rotates to the second position, it is held in the second position by the spring force of the tension spring 66.

[0074] Next, Figure 8 is a front view showing the car door device 12 of Figure 4 applied to the landing door device 14 of Figure 3. Figure 9 is a front view showing the door coupling device 35 during the opening operation of the first car door 32 of Figure 8.

[0075] If the landing door device 14 is of the reduced coupling type, the rod 55 is connected to the second rod coupling section 51e. In this case, when the car 8 lands on the landing, the fixed-side interlock roller 29 and the movable-side interlock roller 30 are positioned between the first vane 53 and the second vane 54, as shown in Figure 8.

[0076] When the rod 55 is pulled up from this state, the upper link 51 and the lower link 52 rotate counterclockwise as shown in Figure 8, and the distance between the first vane 53 and the second vane 54 decreases. Then, as shown in Figure 9, the fixed interlock roller 29 and the movable interlock roller 30 are sandwiched between the first vane 53 and the second vane 54.

[0077] As a result, the first landing door 16 is connected to the first car door 32, and the interlock device 19 is unlocked.

[0078] In this type of door coupling device 35, a first rod coupling portion 51d and a second rod coupling portion 51e are provided on the upper link 51, flanking the rotating shaft portion 51a. The rod 55 is selectively connected to either the first rod coupling portion 51d or the second rod coupling portion 51e, depending on the type of landing door device 14.

[0079] Therefore, by connecting the rod 55 to either the first rod connecting portion 51d or the second rod connecting portion 51e, the direction in which the first vane 53 and the second vane 54 are displaced when the rod 55 is pulled up can be switched. Thus, it can be easily applied to two different types of landing door devices 14 using common parts.

[0080] Conventionally, one method of elevator renovation involves reusing the existing landing door system 14 while replacing the car door system 12, thereby reducing costs and shortening the renovation period. However, this renovation method required designing and manufacturing a dedicated door coupling device to match the type of existing landing door system 14.

[0081] In contrast, the door coupling device 35 of Embodiment 1 reduces the burden of designing the door coupling device 35 during renovations.

[0082] Figure 10 is a front view of the main part of the car door device 12 according to the first modified embodiment of the first embodiment, as seen from the landing side. Figure 11 is an enlarged front view of the link interlocking mechanism 56 of Figure 10.

[0083] In the first modified example, the rod 55 is pushed down, changing the distance between the first vane 53 and the second vane 54, thereby connecting the first car door 32 to the first landing door 16. Other configurations in the first modified example are the same as in Embodiment 1.

[0084] Thus, in Embodiment 1 and the following embodiments, the displacement direction of the rod 55 when the first car door 32 is connected to the first landing door 16 is not limited to the upward direction, but may also be the downward direction.

[0085] Figure 12 is a front view of the main part of the car door device 12 according to a second modification of Embodiment 1, as seen from the landing side.

[0086] In the second modified example, the inclination direction of the upper link 51 and the lower link 52 is the opposite of that in Embodiment 1. That is, the upper link 51 and the lower link 52 are inclined to become lower toward the door stop side of the first car door 32.

[0087] Therefore, the first vane connecting portion 51b is provided above the rotating shaft portion 51a. The second vane connecting portion 51c is provided below the rotating shaft portion 51a. The other configurations in the second modified example are the same as in the first embodiment.

[0088] Thus, in Embodiment 1 and the following embodiments, the inclination directions of the upper link 51 and the lower link 52 may be in opposite directions.

[0089] Embodiment 2. Next, Figure 13 is a front view showing the door coupling device 35 according to Embodiment 2, and shows the state when the first car door 32 is in the fully closed position.

[0090] In Embodiment 2, the connection position of the rod 55 to the rotating cam 62 can be changed between the position shown in Figure 7 and the position shown in Figure 13. This allows for adjustment of the displacement of the first vane 53 and the second vane 54 when the first car door 32 is opened.

[0091] Figure 14 is a front view showing an enlarged view of the rotating cam 62 in Figure 13. Figure 15 is a side view of the rotating cam 62 in Figure 14, viewed along arrow XII. The cam roller 63 is omitted in Figures 14 and 15.

[0092] The mounting plate 64 is provided with a pair of elongated holes 64a. A sliding body 68 is attached to the mounting plate 64. The sliding body 68 has a front plate 68a, a back plate 68b, and a pair of tightening screws 68c.

[0093] The back plate 68b sandwiches a mounting plate 64 between it and the front plate 68a. A pair of tightening screws 68c are passed through the front plate 68a and a pair of elongated holes 64a and screwed into the back plate 68b.

[0094] The sliding body 68 can slide along a pair of elongated holes 64a by loosening a pair of tightening screws 68c. The sliding body 68 is also fixed to the mounting plate 64 by tightening the pair of tightening screws 68c.

[0095] The sliding body 68 is provided with a mounted bearing 69. The upper end of the rod 55 is connected to the mounted bearing 69.

[0096] By sliding the sliding body 68 relative to the mounting plate 64, the connection position of the rod 55 to the rotating cam 62 can be continuously changed in a direction that changes the distance of the rotating cam 62 from the center of rotation of the rotating cam 62.

[0097] Other configurations and operations in Embodiment 2 are the same as in Embodiment 1.

[0098] In this type of door coupling device 35, the amount of lifting of the rod 55 by the rotation of the rotating cam 62 can be adjusted. This allows adjustment of how far apart or closer the first vane 53 and the second vane 54 are when the first car door 32 is opened. Therefore, it can be more reliably applied to many different types of landing door devices 14 using common parts.

[0099] Furthermore, when renovating the elevator, it is possible to easily accommodate differences in the spacing between the pair of connecting rollers 40 in the existing landing door device 14, thereby reducing the burden of designing the door connecting device 35.

[0100] Furthermore, the connection position of the rod 55 to the rotating cam 62 may be discontinuous, i.e., adjustable in steps.

[0101] Embodiment 3. Next, Figure 16 is a front view showing the rod 55 of the door coupling device 35 according to Embodiment 3. The rod 55 has a rod body 55a, a first connecting plate 55b, a second connecting plate 55c, a pair of first nuts 55d, and a pair of second nuts 55e.

[0102] The upper end of the rod body 55a is connected to the lower end of the first connecting plate 55b by a pair of first nuts 55d. The lower end of the rod body 55a is connected to the upper end of the second connecting plate 55c by a pair of second nuts 55e.

[0103] The first connecting plate 55b is rotatably connected to the rotating cam 62. The second connecting plate 55c is rotatably connected to the first rod connecting portion 51d or the second rod connecting portion 51e.

[0104] The connection position of the first connecting plate 55b to the rod body 55a, and the connection position of the second connecting plate 55c to the rod body 55a, are both adjustable. This allows the length of the rod 55 to be adjusted.

[0105] The configuration and operation of the other door coupling device 35 and the configuration and operation of the car door device 12 in Embodiment 3 are the same as in Embodiment 1 or Embodiment 2.

[0106] In such a door coupling device 35, the distance between the first vane 53 and the second vane 54 when the first car door 32 is in the fully closed position can be adjusted by adjusting the length of the rod 55.

[0107] This makes it easy to create a door coupling device 35 with different spacings between the first vane 53 and the second vane 54, using common parts. Therefore, the design burden of the door coupling device 35 during renovations can be reduced.

[0108] Embodiment 4. Next, Figure 17 is a front view showing the door coupling device 35 according to Embodiment 4. Figure 18 is a front view showing the door coupling device 35 during the opening operation of the first car door 32 in Figure 17.

[0109] The door coupling device 35 of Embodiment 4 has the same configuration as any of Embodiments 1 to 3, plus a ratchet 70, a stopper 71, a pair of stopper guides 72, and a stopper displacement mechanism 73.

[0110] The ratchet 70 is fixed to the upper link 51. The ratchet 70 also rotates together with the upper link 51 around the rotating shaft portion 51a.

[0111] The stopper 71 is displaceable vertically relative to the first car door 32 between the allowable position shown in Figure 17 and the blocking position shown in Figure 18. The allowable position is the position where the stopper 71 is separated from the upper link 51, allowing the upper link 51 to rotate. The blocking position is the position lowered from the allowable position. The blocking position is also the position where the stopper 71 contacts the ratchet 70, preventing the rotation of the upper link 51.

[0112] The pair of stopper guides 72 are attached to the car door hanger 39 of the first car door 32. The pair of stopper guides 72 are also spaced apart from each other in the opening and closing direction of the first car door 32.

[0113] The stopper 71 is passed between a pair of stopper guides 72. The pair of stopper guides 72 then guide the vertical displacement of the stopper 71.

[0114] The stopper displacement mechanism 73 is connected to the link interlocking mechanism 56. The stopper displacement mechanism 73 also has a first arm 74 and a second arm 75.

[0115] The first arm 74 is fixed to the rotating cam 62. The upper end of the second arm 75 is rotatably connected to the first arm 74. The lower end of the second arm 75 is rotatably connected to the upper end of the stopper 71.

[0116] The stopper displacement mechanism 73 positions the stopper 71 in an acceptable position, as shown in Figure 17, when the first car door 32 is in the fully closed position. The stopper displacement mechanism 73 also lowers the stopper 71 when the first car door 32 moves from the fully closed position toward the door pocket side.

[0117] Furthermore, the stopper displacement mechanism 73 positions the stopper 71 in a blocking position, as shown in Figure 18, when the first vane 53 and the second vane 54 are positioned where the first landing door 16 is connected to the first car door 32.

[0118] Figure 19 is a front view showing the door coupling device 35 of Figure 17 applied to the landing door device 14 of Figure 3. Figure 20 is a front view showing the door coupling device 35 during the opening operation of the first car door 32 of Figure 19.

[0119] Other configurations and operations in Embodiment 4 are the same as those in Embodiment 1, Embodiment 2, or Embodiment 3.

[0120] Here, when the first car door 32 opens, and when the first car door 32 reverses from the open operation to the closed operation, a force acts on the first vane 53 and the second vane 54 that attempts to change the distance between the first vane 53 and the second vane 54.

[0121] Specifically, when the landing door device 14 is of the expanding connection type, a force acting to reduce the spacing acts from the pair of connecting rollers 40 to the first vane 53 and the second vane 54, as shown by the arrows in Figure 18. Also, when the landing door device 14 is of the contracting connection type, a force acting to increase the spacing acts from the fixed-side interlock roller 29 and the movable-side interlock roller 30 to the first vane 53 and the second vane 54, as shown by the arrows in Figure 20.

[0122] In contrast, in the door coupling device 35 of Embodiment 4, when the first vane 53 and the second vane 54 are positioned so that the first landing door 16 is connected to the first car door 32, the rotation of the upper link 51 is prevented by the stopper 71.

[0123] Therefore, the first vane 53 and the second vane 54 are prevented from moving due to forces that attempt to change the spacing between them. This ensures sufficient responsiveness of the first landing door 16 when the first car door 32 is opening and closing. For example, even if the first car door 32 reverses direction during the opening operation, the first landing door 16 can be immediately reversed.

[0124] Furthermore, the first landing door 16 and the first car door 32 can be smoothly accelerated and decelerated, allowing for precise control of the opening and closing operation and shortening the opening and closing time.

[0125] Furthermore, the movement of the first vane 53 and the second vane 54 during opening and closing operations can be prevented without limiting the angle of the upper link 51 when the first car door 32 is not in the fully closed position.

[0126] Embodiment 5. Next, Figure 21 is a front view showing the door coupling device 35 according to Embodiment 5. Figure 22 is a front view showing the door coupling device 35 during the opening operation of the first car door 32 in Figure 21.

[0127] The door coupling device 35 of Embodiment 5 has the same configuration as any of Embodiments 1 to 3, plus a cam latch 81 and a latch displacement mechanism 82.

[0128] The rotating cam 62 is provided with a hook portion 62a. The cam latch 81 is rotatably mounted on the first car door 32 between an allowable position shown in Figure 21 and a blocking position shown in Figure 22.

[0129] The permissible position is the position where the cam latch 81 is separated from the rotating cam 62, allowing the rotating cam 62 to rotate. The blocking position is the position where the cam latch 81 engages with the hook portion 62a, preventing the rotating cam 62 from rotating in the direction returning to the first position.

[0130] The latch displacement mechanism 82 positions the cam latch 81 in an allowable position when the first car door 32 is in the fully closed position. Furthermore, when the first car door 32 moves from the fully closed position toward the door pocket side, the latch displacement mechanism 82 rotates the cam latch 81 toward the blocked position.

[0131] Furthermore, the latch displacement mechanism 82 positions the cam latch 81 in a blocking position, as shown in Figure 22, when the first vane 53 and the second vane 54 are positioned where the first landing door 16 is connected to the first car door 32.

[0132] The latch displacement mechanism 82 includes a latch roller 83, a roller base 84, and a latch spring 85.

[0133] The latch roller 83 is rotatably mounted on the cam latch 81. The roller base 84 is fixed to the car door frame 31. When the first car door 32 is in the fully closed position, the latch roller 83 rides up on the roller base 84, thereby holding the cam latch 81 in the allowable position.

[0134] The latch spring 85 is located between the car door hanger 39 of the first car door 32 and the cam latch 81. The latch spring 85 also applies a force to the cam latch 81 in a direction that causes it to rotate toward the blocked position.

[0135] From the state shown in Figure 21, when the first cage door 32 moves in the opening direction, the rotating cam 62 rotates from the first position to the second position. Also, the latch roller 83 disengages from the roller base 84, and as shown in Figure 22, the spring force of the latch spring 85 causes the cam latch 81 to rotate to the blocking position and engage with the hook portion 62a. This prevents the rotating cam 62 from rotating back to the first position.

[0136] Figure 23 is a front view showing the door coupling device 35 of Figure 21 applied to the landing door device 14 of Figure 3. Figure 24 is a front view showing the door coupling device 35 during the opening operation of the first car door 32 of Figure 23.

[0137] Other configurations and operations in Embodiment 5 are the same as those in Embodiment 1, Embodiment 2, or Embodiment 3.

[0138] In this type of door coupling device 35, when the first vane 53 and the second vane 54 are positioned where the first landing door 16 is connected to the first car door 32, the rotation of the rotating cam 62 is prevented by the cam latch 81.

[0139] Therefore, the force attempting to change the distance between the first vane 53 and the second vane 54 prevents the first vane 53 and the second vane 54 from moving. This ensures sufficient responsiveness of the first landing door 16 during the opening and closing operation of the first car door 32. For example, even if the first car door 32 reverses direction during the opening operation, the first landing door 16 can be immediately reversed.

[0140] Furthermore, the first landing door 16 and the first car door 32 can be smoothly accelerated and decelerated, allowing for precise control of the opening and closing operation and shortening the opening and closing time.

[0141] Furthermore, the movement of the first vane 53 and the second vane 54 during opening and closing operations can be prevented without limiting the angle of the upper link 51 when the first car door 32 is not in the fully closed position.

[0142] The connecting member on the landing side is not limited to a pair of connecting rollers 40, a fixed-side interlock roller 29, and a movable-side interlock roller 30.

[0143] Furthermore, the overall layout of the elevator is not limited to the layout shown in Figure 1. For example, the roping method could be a 2:1 roping method.

[0144] Furthermore, the elevator may be a machine-room-less elevator, a double-deck elevator, or a single-shaft multi-car elevator. In a single-shaft multi-car elevator, the upper car and the lower car located directly below the upper car each move independently up and down a common hoistway.

[0145] Although preferred embodiments have been described in detail above, the invention is not limited to the embodiments described above, and various modifications and substitutions can be made to the embodiments described above without departing from the scope of the claims.

[0146] The various aspects of this disclosure are summarized below as an appendix.

[0147] (Note 1) A link having a rotating shaft portion, a first vane connecting portion, a first rod connecting portion provided on the same side of the rotating shaft portion as the first vane connecting portion in the opening and closing direction of the car door, a second vane connecting portion provided on the opposite side of the rotating shaft portion from the first vane connecting portion in the opening and closing direction of the car door, and a second rod connecting portion provided on the opposite side of the rotating shaft portion from the first rod connecting portion in the opening and closing direction of the car door, and being rotatably attached to the car door about the rotating shaft portion. A first vane is rotatably connected to the first vane connecting portion and is displaced in the opening and closing direction of the car door by the rotation of the link. A second vane is rotatably connected to the second vane connecting portion and is displaced in the opposite direction to the first vane by the rotation of the link, A rod selectively connected to either the first rod connecting portion or the second rod connecting portion, and A link interlocking mechanism is provided between the cage door frame and the cage door, and the rod is connected to it, displacing the rod vertically in conjunction with the opening and closing operation of the cage door, thereby rotating the link via the rod. Equipped with, An elevator door coupling device that connects the car door to the landing door by displacing the rod in the vertical direction, thereby changing the distance between the first vane and the second vane. (Note 2) The aforementioned link interlocking mechanism is The aforementioned rod is connected to a rotating cam provided on the car door so as to be rotatable between a first position and a second position, A fixed cam is provided on the car door frame and holds the rotating cam in the first position when the car door is in the fully closed position, and rotates the rotating cam to the second position when the car door is opened. It has, The rod is configured to be displaced vertically as the rotating cam rotates to the second position. The elevator door coupling device according to Appendix 1, wherein the connection position of the rod to the rotating cam can be changed, thereby allowing adjustment of the displacement of the first vane and the second vane during the opening operation of the elevator car door. (Note 3) The elevator door coupling device described in Appendix 1, wherein the length of the aforementioned rod is adjustable. (Note 4) A stopper that is displaceable relative to the car door between an allowable position that allows rotation of the link away from the link and a blocking position that prevents rotation of the link, and A stopper displacement mechanism is connected to the link interlocking mechanism and moves the stopper to the allowable position when the car door is in the fully closed position, and moves the stopper to the blocking position when the first vane and the second vane are positioned where the landing door is connected to the car door. An elevator door coupling device as described in any one of the appendices 1 to 3, further comprising the above. (Note 5) A cam latch is provided on the cage door so as to be rotatable between an allowable position and a blocked position, and A latch displacement mechanism that positions the cam latch in the allowable position when the car door is in the fully closed position, and positions the cam latch in the blocking position when the first vane and the second vane are positioned where the landing door is connected to the car door. Furthermore, The aforementioned link interlocking mechanism is The aforementioned rod is connected to a rotating cam provided on the car door so as to be rotatable between a first position and a second position, A fixed cam is provided on the car door frame and holds the rotating cam in the first position when the car door is in the fully closed position, and rotates the rotating cam to the second position when the car door is opened. It has, The rod is configured to be displaced vertically as the rotating cam rotates to the second position. The aforementioned permissible position is a position in which the cam latch is separated from the rotating cam and allows the rotation of the rotating cam. The elevator door coupling device as described in Appendix 1, wherein the blocking position is the position in which the cam latch engages with the rotating cam and prevents the rotation of the rotating cam. (Note 6) Door coupling device as described in any one of the items from Appendix 1 to Appendix 5 An elevator car door device equipped with [a specific feature]. [Explanation of Symbols]

[0148] 12 Cage door device, 16 First landing door, 31 Cage door frame, 32 First car door, 35 Door coupling device, 51 Upper link, 51a Rotating shaft section, 51b First vane coupling section, 51c Second vane coupling section, 51d First rod coupling section, 51e Second rod coupling section, 53 First vane, 54 Second vane, 55 Rod, 56 Link interlocking mechanism, 62 Rotating cam, 65 Fixed cam, 71 Stopper, 73 Stopper displacement mechanism, 81 Latch for cam, 82 Latch displacement mechanism.

Claims

1. A link having a rotating shaft portion, a first vane connecting portion, a first rod connecting portion provided on the same side of the rotating shaft portion as the first vane connecting portion in the opening and closing direction of the car door, a second vane connecting portion provided on the opposite side of the rotating shaft portion from the first vane connecting portion in the opening and closing direction of the car door, and a second rod connecting portion provided on the opposite side of the rotating shaft portion from the first rod connecting portion in the opening and closing direction of the car door, and rotatably attached to the car door about the rotating shaft portion. A first vane is rotatably connected to the first vane connecting portion and is displaced in the opening and closing direction of the car door by the rotation of the link. The second vane is rotatably connected to the second vane connecting portion and is displaced in the opposite direction to the first vane by the rotation of the link, A rod selectively connected to either the first rod connecting portion or the second rod connecting portion, and A link interlocking mechanism is provided between the cage door frame and the cage door, and the rod is connected to it, displacing the rod vertically in conjunction with the opening and closing operation of the cage door, thereby rotating the link via the rod. Equipped with, An elevator door coupling device that connects the car door to the landing door by displacing the rod in the vertical direction, thereby changing the distance between the first vane and the second vane.

2. The aforementioned link interlocking mechanism is The aforementioned rod is connected to a rotating cam provided on the car door so as to be rotatable between a first position and a second position, A fixed cam is provided on the car door frame and holds the rotating cam in the first position when the car door is in the fully closed position, and rotates the rotating cam to the second position when the car door is opened. It has, The rod is configured to be displaced vertically as the rotating cam rotates to the second position. The elevator door coupling device according to claim 1, wherein the connection position of the rod to the rotating cam can be changed, thereby allowing adjustment of the displacement of the first vane and the second vane during the opening operation of the car door.

3. The elevator door coupling device according to claim 1, wherein the length of the rod is adjustable.

4. A stopper that is displaceable relative to the car door between an allowable position that allows rotation of the link away from the link and a blocking position that prevents rotation of the link, and A stopper displacement mechanism is connected to the link interlocking mechanism and moves the stopper to the allowable position when the car door is in the fully closed position, and moves the stopper to the blocking position when the first vane and the second vane are positioned where the landing door is connected to the car door. An elevator door coupling device according to any one of claims 1 to 3, further comprising the above.

5. A cam latch is provided on the cage door so as to be rotatable between an allowable position and a blocked position, and A latch displacement mechanism that positions the cam latch in the allowable position when the car door is in the fully closed position, and positions the cam latch in the blocking position when the first vane and the second vane are positioned where the landing door is connected to the car door. Furthermore, The aforementioned link interlocking mechanism is The aforementioned rod is connected to a rotating cam provided on the car door so as to be rotatable between a first position and a second position, A fixed cam is provided on the car door frame and holds the rotating cam in the first position when the car door is in the fully closed position, and rotates the rotating cam to the second position when the car door is opened. It has, The rod is configured to be displaced vertically as the rotating cam rotates to the second position. The aforementioned permissible position is a position in which the cam latch is separated from the rotating cam and allows the rotation of the rotating cam. The elevator door coupling device according to claim 1, wherein the blocking position is a position in which the cam latch engages with the rotating cam and prevents the rotation of the rotating cam.

6. Door coupling device according to any one of claims 1, 2, 3, and 5 An elevator car door device equipped with [a specific feature].

7. Door coupling device according to claim 4 An elevator car door device equipped with [a specific feature].

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