Door systems and elevators

Abstract

The objective is to provide a door device that can reduce the installation space required, and an elevator using the same. [Solution] The first door pocket side rail end face 26a and the first frame end face 25a are located closer to the second door body 36 than the first door pocket side door end face 30a when the first door 22 is in the fully open position. Also, when the first door 22 and the second door 23 are in the fully closed position, the first anti-door pocket side hanger end face 29a is located closer to the door pocket of the second door body 36 than the widthwise center of the car entrance 17a.

Description

Technical Field

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

Background Art

[0002] In a conventional elevator hall door, a frame body is provided above the entrance and exit. The frame body is provided with a high-speed door guide rail and a low-speed door guide rail. The high-speed door is guided by the high-speed door guide rail to perform an opening and closing operation. The low-speed door is guided by the low-speed door guide rail to perform an opening and closing operation (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 hall door as described above, the frame body is provided over the entire moving range of the high-speed door and the low-speed door. On the other hand, it is required to reduce the installation space of the door device.

[0005] The present disclosure has been made to solve the above problems, and an object thereof is to obtain a door device capable of reducing the installation space and an elevator using the same.

Means for Solving the Problems

[0006] The door device relating to this disclosure comprises a frame body, a first door rail provided on the frame body, and a second door rail provided on the frame body, and is installed above the entrance, a first door that opens and closes the entrance by moving guided by the first door rail, and a second door that opens and closes the entrance by moving in the opposite direction to the first door guided by the second door rail, the first door having a first door hanger hung on the first door rail and a first door body connected to the lower part of the first door hanger, and the second door having a first door hanger hung on the second door rail The door has a second door hanger and a second door body connected to the lower part of the second door hanger. The end face of the first door rail on the pocket side of the first door body and the end face of the frame body on the pocket side of the first door body are located closer to the second door body than the position of the pocket side end face of the first door body when the first door is in the fully open position. The first door hanger protrudes further towards the pocket side of the second door body than the end face on the door stop side of the first door body. When the first and second doors are in the fully closed position, the end face of the first door hanger opposite to the pocket side of the first door body is located closer to the pocket side of the second door body than the center in the width direction of the doorway. [Effects of the Invention]

[0007] According to this disclosure, it is possible to reduce the installation space required for the door device. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic diagram showing an elevator according to Embodiment 1. [Figure 2] Figure 1 is a schematic front view of the car door mechanism as seen from the landing side. [Figure 3] Figure 2 is a schematic side view showing the main parts of the cage door device. [Figure 4] Figure 2 is a front view showing the fully open state of the cage door mechanism. [Figure 5] This is a schematic front view of the elevator car door device according to Embodiment 2, as seen from the landing side. [Figure 6]Figure 5 is a schematic side view showing the main parts of the cage door device. [Figure 7] Figure 5 is a front view showing the fully open state of the cage door mechanism. [Figure 8] This is a schematic front view of the elevator car door device according to Embodiment 3, as seen from the landing side. [Figure 9] Figure 8 is a front view showing the fully open state of the cage door mechanism. [Modes for carrying out the invention]

[0009] The embodiments will be described below with reference to the drawings. Embodiment 1. Figure 1 is a schematic diagram showing an elevator according to Embodiment 1. The elevator in Embodiment 1 is a 2:1 roping type machine room-less elevator.

[0010] In the figure, a support beam 12 is provided at the top of the elevator shaft 11. A hoisting machine 13 is supported by the support beam 12. The hoisting machine 13 includes a drive sheave 14, a hoisting machine motor (not shown), and a hoisting machine brake (not shown).

[0011] The hoisting motor rotates the drive sheave 14. The hoisting brake maintains the drive sheave 14 in a stationary state. The hoisting brake also slows the rotation of the drive sheave 14.

[0012] A suspension system 15 is wrapped around the drive sheave 14. The suspension system 15 can consist of multiple ropes or multiple belts.

[0013] The elevator car 16 and counterweight 19 are suspended within the hoistway 11 by the suspension body 15. The elevator car 16 and counterweight 19 move up and down within the hoistway 11 by rotating the drive sheave 14.

[0014] Inside the hoistway 11, 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 guides the ascending and descending of the car 16. The pair of counterweight guide rails guides the ascending and descending of the counterweight 19.

[0015] The car 16 has a car cabin 17 and a car door device 18. On the car 16, a door controller (not shown) is provided. The door controller controls the car door device 18.

[0016] At each landing of multiple floors, a landing door device 20 is provided. Each landing door device 20 opens and closes in conjunction with the car door device 18 when the car 16 lands.

[0017] Figure 2 is a schematic front view of the car door device 18 in FIG. 1 as seen from the landing side. Figure 3 is a schematic side view showing the main part of the car door device 18 in FIG. 2. Figure 4 is a front view showing the fully open state of the car door device 18 in FIG. 2.

[0018] At the front of the car cabin 17, a car entrance 17a is provided. The car door device 18 has a door frame 21, a first door 22, a second door 23, a threshold 24, a door motor (not shown), and a transmission mechanism (not shown).

[0019] The door frame 21 is installed on the car 8 above the car entrance 17a. Also, the door frame 21 has a frame body 25, a first door rail 2, a second door rail 27, and a plurality of mounting arms 28.

[0020] The first door rail 26 and the second door rail 27 are provided on the frame body 25 parallel to each other and horizontally. The first door rail 26 is fixed to the frame body 25 via a plurality of mounting arms 28.

[0021] As shown in Figure 3, the first door rail 26 and the second door rail 27 are positioned offset from each other in the depth direction of the elevator car 17. The depth direction of the elevator car 17 is perpendicular to both the width direction and the vertical direction of the elevator car entrance 17a. In addition, the second door rail 27 is positioned above the first door rail 26.

[0022] The width direction of the elevator car entrance 17a is parallel to the opening and closing directions of the first door 22 and the second door 23, and corresponds to the left-right direction in Figure 2.

[0023] The door motor causes the first door 22 and the second door 23 to open and close via a transmission mechanism.

[0024] The first door 22 opens and closes the car entrance 17a by moving guided by the first door rail 26. The second door 23 opens and closes the car entrance 17a by moving in the opposite direction to the first door 22, guided by the second door rail 27. In other words, the car door device 18 of Embodiment 1 is a two-door, center-opening type door device.

[0025] The first door 22 includes a first door hanger 29, a first door body 30, a plurality of first door legs 31, and a retainer 32 as a regulating member.

[0026] The first door hanger 29 is hung on the first door rail 26. The first door hanger 29 also has a first hanger plate 33 and a pair of first hanger rollers 34.

[0027] A pair of first hanger rollers 34 are rotatably mounted on the first hanger plate 33. Furthermore, the pair of first hanger rollers 34 move along the first door rail 26 while rolling during the opening and closing operation of the first door 22.

[0028] The first door body 30 is connected to the lower part of the first door hanger 29. Multiple legs 31 and retainers 32 of the first door are provided at the lower end of the first door body 30.

[0029] The second door 23 has a second door hanger 35, a second door body 36, and multiple legs 37 for the second door.

[0030] The second door hanger 35 is hung on the second door rail 27. The second door hanger 35 also has a second hanger plate 38 and a pair of second hanger rollers 39.

[0031] A pair of second hanger rollers 39 are rotatably mounted on the second hanger plate 38. The pair of second hanger rollers 39 also roll along the second door rail 27 during the opening and closing operation of the second door 22. Multiple mounting arms 28 are positioned so as not to interfere with the second hanger plate 38 during the opening and closing operation of the second door 23.

[0032] The second door body 36 is connected to the lower part of the second door hanger 35. Multiple legs 37 for the second door are provided at the lower end of the second door body 36.

[0033] The threshold 24 is located below the car entrance 17a. A threshold groove 24a is provided on the upper surface of the threshold 24, aligned with the opening and closing direction of the first door 22 and the second door 23. The threshold groove 24a guides the movement of the lower ends of the first door body 30 and the second door body 36 when the first door 22 and the second door 23 are opened and closed.

[0034] The first door pocket side rail end face 26a of the first door rail 26 and the first frame end face 25a of the frame body 25 are located on the second door body 36 side, respectively, compared to the position of the first door pocket side door end face 30a of the first door body 30 when the first door 22 is in the fully open position.

[0035] The first door pocket side rail end face 26a is the end face of the first door rail 26 on the door pocket side of the first door body 30, that is, the end face of the first door rail 26 on the opposite side from the second door 23. The first frame end face 25a is the end face of the frame body 25 on the door pocket side of the first door body 30. The first door pocket side door end face 30a is the end face of the first door body 30 on the door pocket side.

[0036] The first door hanger 29 protrudes from the door pocket side of the second door body 36 beyond the first door stop side door end face 30b. As a result, when the first door 22 and the second door 23 are in the fully closed position, the first door hanger 29 partially overlaps with the second door hanger 35 when viewed from the landing side. The first door stop side door end face 30b is the door stop side end face of the first door body 30.

[0037] When the first door 22 and the second door 23 are in the fully closed position, the first anti-door pocket hanger end face 29a of the first door hanger 29 is located on the door pocket side of the second door body 36, rather than the widthwise center of the car entrance 17a.

[0038] The first door pocket side hanger end face 29a is the end face of the first door hanger 29 on the side of the first door body 30 that is opposite to the door pocket side.

[0039] One of the pair of first hanger rollers 34 is located on the opposite side of the door pocket side of the first door body 30 from the widthwise center of the car entrance 17a when the first door 22 and the second door 23 are in the fully closed position, and overlaps with the second door hanger 35 when viewed from the landing side. The other of the pair of first hanger rollers 34 is located on the door pocket side of the first door body 30 from the widthwise center of the car entrance 17a when the first door 22 and the second door 23 are in the fully closed position.

[0040] The end face 26b of the first door rail 26, which is opposite to the end face 26a of the first door pocket side rail, is located in the same position as the end face 27a of the second door pocket side rail 27 in the width direction of the car entrance 17a.

[0041] The end face 27a of the second door pocket side rail is the end face of the second door rail 27 on the door pocket side of the second door body 36, that is, the end face of the second door rail 27 on the opposite side from the first door 22.

[0042] The length of the first door rail 26 from the point where it intersects the center line in the width direction of the car entrance 17a to the end face 26a of the first door pocket side rail is shorter than the length of the second door rail 27 from the point where it intersects the center line in the width direction of the car entrance 17a to the end face 27a of the second door pocket side rail.

[0043] The length of the frame body 25 from the point where it intersects the center line in the width direction of the car entrance 17a to the first frame end face 25a is shorter than the length of the frame body 25 from the point where it intersects the center line in the width direction of the car entrance 17a to the second frame end face 25b. The second frame end face 25b is the end face of the frame body 25 on the door pocket side of the second door body 36.

[0044] A weight 40 is provided at the door stop side end of the upper end of the first door body 30.

[0045] The first sill end face 24b is located closer to the second door body 36 than the position of the first door pocket side door end face 30a when the first door 22 is in the fully open position. The first sill end face 24b is the end face of the sill 24 on the door pocket side of the first door body 30.

[0046] The length of the sill 24 from the point where it intersects the center line in the width direction of the car entrance 17a to the first sill end face 24b is shorter than the length of the sill 24 from the point where it intersects the center line in the width direction of the car entrance 17a to the second sill end face 24c. The second sill end face 24c is the end face of the sill 24 on the pocket side of the second door body 36.

[0047] The legs 31 of the multiple doors are inserted into the threshold groove 24a whether the first door 22 is in the fully closed position or the fully open position.

[0048] The retainer 32 is inserted into the threshold groove 24a when the first door 22 is in the fully closed position. In this way, the retainer 32 restricts the displacement of the first door body 30 in a direction perpendicular to the first door body 30 when the first door 22 is in the fully closed position.

[0049] Furthermore, when the first door 22 is in the fully open position, the retainer 32 is located on the extension of the sill groove 24a on the outside of the sill 24.

[0050] In this type of cage door device 18, the first door pocket side rail end face 26a and the first frame end face 25a are located closer to the second door body 36 than the first door pocket side door end face 30a when the first door 22 is in the fully open position.

[0051] Furthermore, the first door hanger 29 protrudes further toward the door pocket side of the second door body 36 than the first door end face 30b. Also, when the first door 22 and the second door 23 are in the fully closed position, the first anti-door pocket side hanger end face 29a is located toward the door pocket side of the second door body 36 than the widthwise center of the car entrance 17a.

[0052] Therefore, the length of the first door rail 26 and the length of the frame body 25 can be shortened without reducing the opening and closing range of the first door 22, that is, without reducing the width dimension of the car entrance 17a. This makes it possible to save space for the installation of the car door device 18.

[0053] Furthermore, by shortening the length of the frame body 25, the first space A shown by the dashed line in Figure 2 can be left open, thus avoiding interference with the hoistway equipment. Consequently, the degree of freedom in arranging the hoistway equipment can be improved.

[0054] For example, if the door frame 21 interferes with the support beam 12 when the elevator car 16 moves to the top floor, the support beam 12 must be positioned higher beforehand, increasing the overhead dimension. However, according to Embodiment 1, by shortening the length of the frame body 25, interference with the support beam 12 can be avoided, and the increase in overhead dimension can be suppressed.

[0055] Furthermore, in elevators where the inside of the hoistway 11 is visible from the landing, the aesthetic appeal can be improved by shortening the length of the frame body 25.

[0056] Furthermore, the first door rail 26 and the second door rail 27 are positioned offset from each other in the depth direction of the elevator car 17. This allows for a simple configuration to avoid interference between the first door hanger 29 and the second door hanger 35, thereby reducing the vertical dimension of the door frame 21.

[0057] Furthermore, a weight 40 is provided at the door stop side end of the upper end of the first door body 30. This allows the center of gravity of the first door 22 to be located between the pair of first hanger rollers 34, making it easy to suppress the shaking of the first door 22 during opening and closing operations.

[0058] Furthermore, the first sill end face 24b is located closer to the second door body 36 than the position of the first door pocket side door end face 30a when the first door 22 is in the fully open position. As a result, the length of the sill 24 can be shortened, the second space B shown by the dashed line in Figure 2 can be left open, and interference with the elevator shaft equipment can be avoided.

[0059] Furthermore, in elevators where the inside of the hoistway 11 is visible from the landing, the aesthetic appeal can be improved by shortening the length of the threshold 24.

[0060] Furthermore, a retainer 32 is provided at the lower end of the first door body 30. Therefore, even if the legs 31 of multiple first doors are positioned closer to the second door 23, the displacement of the first door body 30 in a direction perpendicular to the first door body 30 can be restricted when the first door 22 is in the fully closed position.

[0061] The first door rail 26 and the second door rail 27 may be arranged side by side at the same position in the vertical direction.

[0062] Embodiment 2. Next, Figure 5 is a schematic front view of the elevator car door device 18 according to Embodiment 2, as seen from the landing side. Figure 6 is a schematic side view showing the main parts of the elevator car door device 18 in Figure 5. Figure 7 is a front view showing the elevator car door device 18 in Figure 5 in the fully open state.

[0063] In Embodiment 2, the first door rail 26 is positioned above the second door rail 27. Furthermore, the first door rail 26 and the second door rail 27 are positioned at the same location in the depth direction of the elevator car 17, but offset vertically from each other. That is, the first door rail 26 is positioned directly above the second door rail 27.

[0064] The end of the first door hanger 29 on the side of the first door body 30 opposite to the door pocket side is located directly above the second door hanger 35 when the first door 22 and the second door 23 are in the fully closed position.

[0065] The first door 22 has a rabbet member 41 as a regulating member instead of the retainer 32 of Embodiment 1. The rabbet member 41 is fixed to the pocket side end of the first door body 30.

[0066] When the first door 22 is in the fully closed position, if a force is applied to the first door body 30 in a direction perpendicular to the first door body 30, the interlocking member 41 will strike the entrance frame (not shown), thereby restricting the displacement of the first door body 30 in a direction perpendicular to the first door body 30.

[0067] Other configurations in Embodiment 2 are the same as those in Embodiment 1.

[0068] This configuration also provides the same effects as in Embodiment 1.

[0069] Furthermore, the first door rail 26 and the second door rail 27 are positioned at the same location in the depth direction of the elevator car 17, but offset vertically from each other. This makes it possible to suppress an increase in the dimensions of the elevator car door device 18 in the depth direction of the elevator car 17.

[0070] Furthermore, a rabbet joint member 41 is used as a restricting member. Therefore, the displacement of the first door body 30 in a direction perpendicular to the first door body 30 can be restricted by utilizing the existing entrance frame.

[0071] In Embodiment 1, instead of the retainer 32, a rabbet joint member 41 may be used, as in Embodiment 2.

[0072] Furthermore, in Embodiment 2, a retainer 32 may be used instead of the rabbet joint member 41, as in Embodiment 1.

[0073] Furthermore, in embodiments 1 and 2, the weight 40 may be provided at the end of the first door hanger 29 on the side of the first door body 30 opposite to the door pocket side. Alternatively, the weight 40 may be provided at both the door stop side end of the upper end of the first door body 30 and the end of the first door hanger 29 on the side of the first door body 30 opposite to the door pocket side.

[0074] Embodiment 3. Next, Figure 8 is a schematic front view of the elevator car door device 18 according to Embodiment 3, as seen from the landing side. Figure 9 is a front view showing the elevator car door device 18 of Figure 8 in the fully open state.

[0075] The first door pocket side rail end face 26a of the first door rail 26, the end face 27b of the second door rail 27 opposite to the second door pocket side rail end face 27a, and the first frame end face 25a are all located closer to the second door body 36 than the position of the first door pocket side door end face 30a when the first door 22 is in the fully open position.

[0076] The second door pocket side rail end face 27a of the second door rail 27, the end face 26b of the first door rail 26, and the second frame end face 25b are all located closer to the first door body 30 than the position of the second door pocket side door end face 36a of the second door body 36 when the second door 23 is in the fully open position. The second door pocket side door end face 36a is the end face of the second door body 36 on the door pocket side.

[0077] The second door hanger 35 protrudes from the door pocket side of the first door body 30 beyond the second door stop side door end face 36b. As a result, when the first door 22 and the second door 23 are in the fully closed position, the second door hanger 35 partially overlaps with the first door hanger 29 when viewed from the landing side. The second door stop side door end face 36b is the door stop side end face of the second door body 36.

[0078] When the first door 22 and the second door 23 are in the fully closed position, the second anti-door pocket side hanger end face 35a of the second door hanger 35 is located on the door pocket side of the first door body 30, rather than the widthwise center of the car entrance 17a.

[0079] The end face 35a of the second door hanger on the side opposite the door pocket is the end face of the second door hanger 35 on the side opposite the door pocket side of the second door body 36.

[0080] One of the pair of second hanger rollers 39 is located on the opposite side of the door pocket side of the second door body 36 from the widthwise center of the car entrance 17a when the first door 22 and the second door 23 are in the fully closed position, and overlaps with the first door hanger 29 when viewed from the landing side. The other of the pair of second hanger rollers 39 is located on the door pocket side of the second door body 36 from the widthwise center of the car entrance 17a when the first door 22 and the second door 23 are in the fully closed position.

[0081] The end of the second door hanger 35 on the side of the second door body 36 opposite to the door pocket side is located directly below the first door hanger 29 when the first door 22 and the second door 23 are in the fully closed position.

[0082] The end face 27b of the second door rail 27 is located in the same position as the end face 26a of the first door pocket side rail in the width direction of the car entrance 17a.

[0083] The frame body 25, the first door rail 26, and the second door rail 27 are symmetrical with respect to the center line in the width direction of the car entrance 17a.

[0084] Weights 40 are provided at the end of the first door hanger 29 on the side of the first door body 30 that is opposite to the door pocket side, and at the end of the second door hanger 35 on the side of the second door body 36 that is opposite to the door pocket side.

[0085] The second sill end face 24c is located closer to the first door body 30 than the position of the second door pocket side door end face 36a when the second door 23 is in the fully open position. The sill 24 is symmetrical with respect to the widthwise centerline of the car entrance 17a.

[0086] A rabbet joint member 41 is fixed to the pocket-side end of the second door body 36. When the second door 23 is in the fully closed position, if a force is applied to the second door body 36 in a direction perpendicular to the second door body 36, the rabbet joint member 41 will strike the door frame, thereby restricting the displacement of the second door body 36 in a direction perpendicular to the second door body 36.

[0087] Other configurations in Embodiment 3 are the same as those in Embodiment 2.

[0088] This configuration also provides the same effects as in Embodiment 1.

[0089] Furthermore, the end face 27a of the second door pocket side rail, the end face 26b of the first door rail 26, and the end face 25b of the second frame are all located closer to the first door body 30 than the position of the end face 36a of the second door pocket side door when the second door 23 is in the fully open position.

[0090] Furthermore, the second door hanger 35 protrudes further toward the door pocket side of the first door body 30 than the second door end face 36b. Also, when the first door 22 and the second door 23 are in the fully closed position, the second anti-door pocket side hanger end face 35a is located toward the door pocket side of the first door body 30 than the widthwise center of the car entrance 17a.

[0091] Therefore, the length of the second door rail 27 and the length of the frame body 25 can be shortened without reducing the opening and closing range of the second door 23, that is, without reducing the width dimension of the car entrance 17a. This makes it possible to further reduce the installation space of the car door device 18.

[0092] Furthermore, the length of the frame body 25 can be further shortened, creating a third space C shown by the dashed line in Figure 8, thus avoiding interference with the hoistway equipment. Consequently, the degree of freedom in arranging the hoistway equipment can be further improved.

[0093] Furthermore, in elevators where the inside of the hoistway 11 is visible from the landing, the aesthetic appeal can be further improved by further shortening the length of the frame body 25.

[0094] Furthermore, the first door hanger 29 and the second door hanger 35 are each provided with a weight 40. This makes it possible to suppress the shaking of the first door 22 and the second door 23 during opening and closing operations.

[0095] Furthermore, the second sill end face 24c is located closer to the first door body 30 than the position of the second door pocket side door end face 36a when the second door 23 is in the fully open position. As a result, the length of the sill 24 can be further shortened, creating a fourth space D shown by the dashed line in Figure 2, and avoiding interference with elevator equipment.

[0096] Furthermore, in elevators where the inside of the hoistway 11 is visible from the landing, the aesthetic appeal can be further improved by further shortening the length of the threshold 24.

[0097] Furthermore, a rabbet joint member 41 is also attached to the second door body 36. Therefore, the displacement of the second door body 36 in a direction perpendicular to the second door body 36 can be restricted by utilizing the existing entrance frame.

[0098] In Embodiment 3, instead of each phase groove member 41, a retainer 32 may be used, as in Embodiment 1.

[0099] In the third embodiment, the weight 40 may also be provided at the door stop side end of the upper end of the second door body 36. Alternatively, the weight 40 may be provided at both the door stop side end of the upper end of the second door body 36 and the end of the second door hanger 35 on the side of the second door body 36 opposite to the door pocket side.

[0100] Furthermore, in embodiments 1 to 3, the door on the right side facing the elevator car entrance 17a from the landing may be designated as the first door 22, and the door on the left side as the second door 23.

[0101] Furthermore, while embodiments 1 to 3 show machine-room-less elevators, the elevator may also be an elevator with a machine room.

[0102] Furthermore, in embodiments 1 to 3, the elevator roping method is not limited to 2:1 roping, but may be, for example, 1:1 roping.

[0103] Furthermore, in embodiments 1 to 3, the door device may be a landing door device 20. In that case, the door frame 21 is installed above the landing entrance. The first door 22 and the second door 23 open and close the landing entrance.

[0104] By applying the configurations of Embodiments 1 to 3 to the landing door device 20, the installation space required for the landing door device 20 can be reduced, and the flexibility of the arrangement of elevator equipment can be improved. In addition, the aesthetic design of the landing door device 20 can be improved.

[0105] Furthermore, the elevator may be a panoramic elevator. By applying the configurations of Embodiments 1 to 3 to a panoramic elevator, the aesthetic appeal can be improved, and the view from the elevator car 8 can be widened.

[0106] Furthermore, in embodiments 1 to 3, the door device may be a door device installed in a location other than the elevator, such as a door device installed at the entrance or exit of a building. In this case as well, the installation space required for the door device can be reduced, and the flexibility of the arrangement of equipment installed within the building can be improved.

[0107] Furthermore, the door device is not limited to an electric door device; it may also be a manual door device.

[0108] 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.

[0109] The various aspects of this disclosure are summarized below as an appendix.

[0110] (Note 1) A door frame having a frame body, a first door rail provided on the frame body, and a second door rail provided on the frame body, and installed above an entrance / exit, The first door opens and closes the entrance by moving guided by the first door rail, and The second door opens and closes the entrance by moving in the opposite direction to the first door, guided by the second door rail. Equipped with, The first door comprises a first door hanger that hangs on the first door rail and a first door body connected to the lower part of the first door hanger. The second door comprises a second door hanger suspended on the second door rail and a second door body connected to the lower part of the second door hanger. The end face of the first door rail on the pocket side of the first door body and the end face of the frame body on the pocket side of the first door body are located closer to the second door body than the position of the pocket side end face of the first door body when the first door is in the fully open position. The first door hanger protrudes further toward the door pocket side of the second door body than the door stop side end face of the first door body, A door device in which, when the first door and the second door are in the fully closed position, the end face of the first door hanger on the side of the first door body opposite to the door pocket side is located on the door pocket side of the second door body rather than the center of the doorway in the width direction. (Note 2) The door device described in Appendix 1, wherein the first door rail and the second door rail are offset from each other in directions perpendicular to both the width direction and the vertical direction of the entrance. (Note 3) The door device described in Appendix 1, wherein the first door rail and the second door rail are arranged to be offset from each other in the vertical direction. (Note 4) The door device according to any one of the appendices 1 to 3, wherein a weight is provided at least one of the ends of the first door hanger on the side of the first door body opposite to the pocket side, and the door stop side end at the upper end of the first door body. (Note 5) The end face of the second door rail on the pocket side of the second door body and the end face of the frame body on the pocket side of the second door body are located closer to the first door body than the position of the pocket side end face of the second door body when the second door is in the fully open position. The second door hanger protrudes further toward the door pocket side of the first door body than the door stop side end face of the second door body, The door device according to any one of the appendices 1 to 4, wherein when the first door and the second door are in the fully closed position, the end face of the second door hanger on the side of the second door body opposite to the door pocket side is located on the door pocket side of the first door body than the center in the width direction of the entrance. (Note 6) Door device as described in any one of the items from Appendix 1 to Appendix 5 An elevator equipped with this feature. (Note 7) The aforementioned door device, Threshold provided at the bottom of the aforementioned entrance Furthermore, The elevator according to Appendix 6, wherein the end face of the sill on the pocket side of the first door body is located closer to the second door body than the position of the end face on the pocket side of the first door body when the first door is in the fully open position. (Note 8) A groove is provided on the upper surface of the aforementioned threshold. The lower end of the first door body is provided with door legs, The legs of the door are inserted into the threshold groove whether the first door is in the fully closed position or the fully open position. The elevator according to Appendix 7, wherein the first door body is provided with a restricting member that restricts the displacement of the first door body in a direction perpendicular to the first door body when the first door is in the fully closed position. (Note 9) The regulating member is a retainer provided at the lower end of the first door body, When the first door is in the fully closed position, the retainer is inserted into the threshold groove. The elevator according to Appendix 8, wherein when the first door is in the fully open position, the retainer is located on the extension of the sill groove on the outside of the sill. [Explanation of Symbols]

[0111] 17a Car entrance / exit, 21 Door frame, 22 First door, 23 Second door, 24 Threshold, 24a Threshold groove, 24b First sill end face, 24c Second sill end face, 25 Frame body, 25a First frame end face, 25b Second frame end face, 26 First door rail, 26a First pocket side rail end face, 27 Second door rail, 27a Second pocket side rail end face, 29 First door hanger, 29a First reverse pocket side hanger end face, 30 First door body, 30a First pocket side door end face, 30b First door stop side door end face, 31 First door leg, 32 Retainer (regulating member), 35 Second door hanger, 35a Second reverse pocket side hanger end face, 36 Second door body, 36a Second pocket side door end face, 36b Door end face on the second door side, 40 weight, 41 rabbet member (regulating member).

Claims

1. A door frame having a frame body, a first door rail provided on the frame body, and a second door rail provided on the frame body, and installed above an entrance / exit, The first door opens and closes the entrance by moving guided by the first door rail, and The second door opens and closes the entrance by moving in the opposite direction to the first door, guided by the second door rail. Equipped with, The first door comprises a first door hanger that hangs on the first door rail and a first door body connected to the lower part of the first door hanger. The second door comprises a second door hanger that hangs on the second door rail and a second door body connected to the lower part of the second door hanger. The end face of the first door rail on the pocket side of the first door body and the end face of the frame body on the pocket side of the first door body are located closer to the second door body than the position of the pocket side end face of the first door body when the first door is in the fully open position. The first door hanger protrudes further toward the door pocket side of the second door body than the door stop side end face of the first door body, A door device in which, when the first door and the second door are in the fully closed position, the end face of the first door hanger on the side of the first door body opposite to the door pocket side is located on the door pocket side of the second door body rather than the center in the width direction of the entrance.

2. The door device according to claim 1, wherein the first door rail and the second door rail are offset from each other in directions perpendicular to both the width direction and the vertical direction of the entrance.

3. The door device according to claim 1, wherein the first door rail and the second door rail are arranged to be offset from each other in the vertical direction.

4. The door device according to claim 1, wherein a weight is provided at least one of the ends of the first door hanger on the side of the first door body opposite to the door pocket side, and the door stop side end at the upper end of the first door body.

5. The end face of the second door rail on the pocket side of the second door body and the end face of the frame body on the pocket side of the second door body are located closer to the first door body than the position of the pocket side end face of the second door body when the second door is in the fully open position. The second door hanger protrudes further toward the door pocket side of the first door body than the door stop side end face of the second door body, The door device according to claim 1, wherein when the first door and the second door are in the fully closed position, the end face of the second door hanger on the side of the second door body opposite to the door pocket side is located on the door pocket side of the first door body than the center in the width direction of the entrance.

6. Door device according to any one of claims 1 to 5 An elevator equipped with this feature.

7. The aforementioned door device, Threshold provided at the bottom of the aforementioned entrance Furthermore, The elevator according to claim 6, wherein the end face of the sill on the pocket side of the first door body is located closer to the second door body than the position of the end face on the pocket side of the first door body when the first door is in the fully open position.

8. A groove is provided on the upper surface of the aforementioned threshold. The lower end of the first door body is provided with door legs, The legs of the door are inserted into the threshold groove whether the first door is in the fully closed position or the fully open position. The elevator according to claim 7, wherein the first door body is provided with a restricting member that restricts the displacement of the first door body in a direction perpendicular to the first door body when the first door is in the fully closed position.

9. The regulating member is a retainer provided at the lower end of the first door body, When the first door is in the fully closed position, the retainer is inserted into the threshold groove. The elevator according to claim 8, wherein when the first door is in the fully open position, the retainer is located on the extension of the sill groove on the outside of the sill.

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