Elevator device

Abstract

In an elevator device, a first interlocking device is provided above a first landing entrance. And a second interlocking device is arranged on the entrance / exit of the second landing. The second interlocking device is arranged in a left-right opposite direction to the first interlocking device. One of the pair of car doors is provided with a first unlocking mechanism for unlocking the first interlocking device when the pair of car doors are opened. The other of the pair of car doors is provided with a second unlocking mechanism for unlocking the second interlocking device when the pair of car doors are opened.

Description

Technical Field

[0001] The present disclosure relates to an elevator device. Background Art

[0002] In an existing elevator device, the opening operation of a pair of landing doors is blocked by an interlock device. The interlock device has a hook, a latch, a fixed-side interlock roller, and a movable-side interlock roller. When the car stops at a landing floor and a pair of car doors perform an opening operation, the fixed-side interlock roller and the movable-side interlock roller are clamped by a door knife mechanism. Thereby, the movable-side interlock roller moves along an arc centered on the fixed-side interlock roller, and the latch disengages from the hook, and the interlock device is unlocked (for example, refer to Patent Document 1).

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent No. 6758539 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] In a building provided with an elevator device, sometimes the floor height of a certain landing floor is different from that of other landing floors, and accordingly, the height dimension of the landing entrance sometimes varies. However, in an existing elevator device, the area where the interlock device is allowed to be unlocked is restricted by a door knife mechanism, and thus the installation position of the interlock device is restricted.

[0008] The present disclosure has been made to solve the above-described problems, and an object thereof is to obtain an elevator device capable of increasing the degree of freedom in the installation position of the interlock device.

[0009] Means for Solving the Problems

[0010] The elevator device of the present disclosure includes: a car that is provided with a car entrance and exits and moves up and down in a hoistway; a pair of car doors that are provided on the car and open and close the car entrance and exits by mechanically interlocking and moving in opposite directions; a pair of first landing doors that open and close the first landing entrance and exits by mechanically interlocking and moving in opposite directions; a pair of second landing doors that open and close the second landing entrance and exits provided on a landing floor different from the first landing entrance and exits by mechanically interlocking and moving in opposite directions; a first interlock device that is provided above the first landing entrance and exits and prevents the opening operation of the pair of first landing doors; a second interlock device that is provided above the second landing entrance and exits and is arranged with an orientation opposite to that of the first interlock device left and right to prevent the opening operation of the pair of second landing doors; a first unlocking mechanism that is provided on one of the pair of car doors and unlocks the first interlock device during the opening operation of the pair of car doors; and a second unlocking mechanism that is provided on the other of the pair of car doors and unlocks the second interlock device during the opening operation of the pair of car doors.

[0011] Advantages of the Invention

[0012] According to the elevator device of the present disclosure, the degree of freedom in the installation position of the interlock device can be increased. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram showing the elevator device of Embodiment 1.

[0014] Figure 2 It is a front view of the first landing door device in the elevator device viewed from the hoistway side Figure 1

[0015] Figure 3 It is a front view of the second landing door device in the elevator device viewed from the hoistway side Figure 1

[0016] Figure 4 It is a front view of the car door device in the elevator device viewed from the landing side Figure 1

[0017] Figure 5 It schematically shows Figure 2 the positional relationship between the first interlock device of Figure 4 and the first unlocking mechanism and the second unlocking mechanism of

[0018] Figure 6 It schematically shows Figure 3 the positional relationship between the second interlock device of Figure 4 and the first unlocking mechanism and the second unlocking mechanism of

[0019] Figure 7 ​​​It is a front view of the car door device in the elevator device of Embodiment 2 as viewed from the landing side.

[0020] Figure 8 It is a front view of the first landing door device in the elevator device of Embodiment 2 as viewed from the hoistway side.

[0021] Figure 9 It is an enlarged front view showing Figure 8 the main part.

[0022] Figure 10 It is a schematic view showing Figure 7 the positional relationship between the first unlocking mechanism and the second unlocking mechanism of Figure 8 and the first interlocking device and the auxiliary roller of

[0023] Figure 11 It is a schematic view showing the positional relationship between the first unlocking mechanism and the second unlocking mechanism and the second interlocking device and the auxiliary roller when the first interlocking device is the car door unlocking interlocking device.

[0024] Figure 12 It is an explanatory view showing an example in which a maintenance unlocking member is provided at the uppermost floor.

[0025] Figure 13 It is a front view of the lowermost landing door device in the elevator device of Embodiment 3 as viewed from the hoistway side. Specific Embodiment

[0026] Hereinafter, the embodiments will be described with reference to the drawings.

[0027] Embodiment 1.

[0028] Figure 1 It is a schematic structural diagram of the elevator device of Embodiment 1. In the figure, a support beam 2 is provided at the top of the hoistway 1. A traction machine 3 is supported on the support beam 2. The traction machine 3 has a traction machine main body 4 and a drive sheave 5.

[0029] The traction machine main body 4 has a traction machine motor (not shown) and a traction machine brake (not shown). The traction machine motor rotates the drive sheave 5. The traction machine brake maintains the drive sheave 5 in a stationary state. In addition, the traction machine brake brakes the rotation of the drive sheave 5.

[0030] A suspension body (not shown) is wound around the drive sheave 5. As the suspension body, multiple ropes or multiple belts are used.

[0031] A car 6 and a counterweight (not shown) are provided in the hoistway 1. The car 6 and the counterweight are suspended by the suspension body, and by rotating the drive sheave 5, the car 6 and the counterweight move up and down in the hoistway 1.

[0032] In the hoistway 1, there are multiple guide rails (not shown). The multiple guide rails guide the lifting and lowering of the car 6 and the counterweight. The support beam 2 is supported by two or more of the multiple guide rails.

[0033] On the front surface of the car 6, there is a car entrance 6a. In addition, a car door device is provided on the car 6. The car door device has a right car door 7a and a left car door 7b as a pair of car doors. The right car door 7a is the car door located on the right side when observing the car entrance 6a from the landing. The left car door 7b is the car door located on the left side when observing the car entrance 6a from the landing.

[0034] The right car door 7a and the left car door 7b move in opposite directions in a mechanically interlocked manner, thereby opening and closing the car entrance 6a.

[0035] Between multiple landing floors and the hoistway 1, multiple landing entrances are provided. The multiple landing entrances include at least one first landing entrance 10a and at least one second landing entrance 10b. The second landing entrance 10b is provided on a landing floor different from the first landing entrance 10a.

[0036] In this example, the landing entrances on multiple landing floors other than the lowest floor are respectively the first landing entrances 10a. In addition, the landing entrance on the lowest floor is the second landing entrance 10b.

[0037] In addition, the height dimension h1 of each first landing entrance 10a and the height dimension h2 of the second landing entrance 10b are different from each other. In this example, the height dimension h2 of the second landing entrance 10b is larger than the height dimension h1 of each first landing entrance 10a. The height dimension of the landing entrance is the vertical dimension from the landing floor to the upper end of the landing entrance.

[0038] On each of the multiple landing floors where the first landing entrance 10a is provided, a first landing door device is provided. Each first landing door device has a first right landing door 8a and a first left landing door 8b as a pair of first landing doors. The first right landing door 8a is the landing door located on the right side when observing the first landing entrance 10a from the landing. The first left landing door 8b is the landing door located on the left side when observing the first landing entrance 10a from the landing.

[0039] In each first landing door device, the first right landing door 8a and the first left landing door 8b move in opposite directions in a mechanically interlocked manner, thereby opening and closing the corresponding first landing entrance 10a. In addition, in each first landing door device, the first right landing door 8a and the first left landing door 8b open and close in a linked manner with the right car door 7a and the left car door 7b when the car 6 stops.

[0040] On the landing floor where the second landing entrance 10b is provided, a second landing door device is provided. The second landing door device has a second right landing door 9a and a second left landing door 9b as a pair of second landing doors. The second right landing door 9a is the landing door located on the right side when observing the second landing entrance 10b from the landing. The second left landing door 9b is the landing door located on the left side when observing the second landing entrance 10b from the landing.

[0041] In the second landing door device, the second right landing door 9a and the second left landing door 9b move in opposite directions mechanically linked to each other, thereby opening and closing the second landing entrance 10b. In addition, in the second landing door device, the second right landing door 9a and the second left landing door 9b are opened and closed in linkage with the right car door 7a and the left car door 7b when the car 6 stops.

[0042] Figure 2 It is observed from the hoistway 1 side Figure 1 is the front view of the first landing door device in the elevator device. In Figure 2 this, since the first landing door device is observed from the side opposite to the landing, the first right landing door 8a is located on the left side and the first left landing door 8b is located on the right side.

[0043] A landing door frame 11 is fixed above the first landing entrance 10a. A landing door track 12 is provided on the landing door frame 11. The landing door track 12 is parallel and horizontal to the width direction of the first landing entrance 10a. The width direction of the first landing entrance 10a is the direction parallel to the opening and closing movement direction of the first right landing door 8a and the first left landing door 8b, and is Figure 2 the left - right direction.

[0044] A first pulley 13 is provided at the first end of the landing door frame 11 in the width direction of the first landing entrance 10a. A second pulley 14 is provided at the second end of the landing door frame 11 in the width direction of the first landing entrance 10a. An annular linkage rope 15 is wound around the first pulley 13 and the second pulley 14.

[0045] The first right landing door 8a and the first left landing door 8b respectively have a landing door panel 16 and a landing door hanger 17. Each landing door hanger 17 is fixed to the upper part of the corresponding landing door panel 16.

[0046] A plurality of landing door rollers 18 are provided on each landing door hanger 17. Each landing door roller 18 rolls and moves on the landing door track 12 during the opening and closing movement of the first right landing door 8a and the first left landing door 8b. The first right landing door 8a and the first left landing door 8b are suspended from the landing door track 12 and perform opening and closing movements along the landing door track 12.

[0047] The first right landing door 8a is connected to the upper side portion of the interlocking rope 15 via the first landing door connecting fitting 19. The first left landing door 8b is connected to the lower side portion of the interlocking rope 15 via the second landing door connecting fitting 20.

[0048] A first interlock device 21a is provided between the first right landing door 8a and the landing door frame 11. That is, the first interlock device 21a is provided above the first landing entrance 10a. The first interlock device 21a prevents the opening operations of the first right landing door 8a and the first left landing door 8b.

[0049] The first interlock device 21a has a hook 22, a latch 23, a fixed-side interlock roller 24, and a movable-side interlock roller 25.

[0050] The hook 22 is fixed to the landing door frame 11. The latch 23 is rotatably mounted on the landing door hanger 17 of the first right landing door 8a. When the first right landing door 8a and the first left landing door 8b are in the fully closed position, the end portion of the latch 23 is hooked on the hook 22, thereby preventing the opening operations of the first right landing door 8a and the first left landing door 8b.

[0051] The fixed-side interlock roller 24 is arranged coaxially with the rotation axis of the latch 23. The movable-side interlock roller 25 is rotatably mounted on the latch 23. The latch 23 and the movable-side interlock roller 25 move along an arc centered on the rotation axis of the latch 23.

[0052] Figure 3 is a front view of the second landing door device in the elevator device Figure 1 viewed from the hoistway 1 side. In Figure 3 , since the second landing door device is viewed from the side opposite to the landing, the second right landing door 9a is located on the left side and the second left landing door 9b is located on the right side. The basic structure of the second landing door device is the same as that of the first landing door device.

[0053] In the second landing door device, the second right landing door 9a and the second left landing door 9b each have a landing door panel 16 and a landing door hanger 17. However, the vertical dimension of each landing door panel 16 in the second landing door device is larger than the vertical dimension of each landing door panel 16 in the first landing door device.

[0054] Above the second landing entrance 10b, a landing door frame 11, a landing door track 12, a first pulley 13, a second pulley 14, and an interlocking rope 15 are provided in the same manner as in the first landing door device.

[0055] The second right landing door 9a is connected to the upper side portion of the interlocking rope 15 via the first landing door connection fitting 19. The second left landing door 9b is connected to the lower side portion of the interlocking rope 15 via the second landing door connection fitting 20.

[0056] A second interlocking device 21b is provided between the second left landing door 9b and the landing door frame 11. That is, the second interlocking device 21b is provided above the second landing entrance 10b. The second interlocking device 21b prevents the opening operations of the second right landing door 9a and the second left landing door 9b.

[0057] Similar to the first interlocking device 21a, the second interlocking device 21b has a hook 22, a latch 23, a fixed-side interlocking roller 24, and a movable-side interlocking roller 25.

[0058] However, when viewed from the hoistway 1 side, the second interlocking device 21b is arranged with the orientation opposite to that of the first interlocking device 21a in the left-right direction. In this example, the second interlocking device 21b and the first interlocking device 21a are arranged symmetrically about the center in the width direction of the first landing entrance 10a and the second landing entrance 10b.

[0059] Figure 4 is a front view of the car door device in the elevator device viewed from the landing side Figure 1 Above the car entrance 6a, a car door frame 31 is fixed. A car door track 32 is provided on the car door frame 31. The car door track 32 is parallel and horizontal to the width direction of the car entrance 6a. The width direction of the car entrance 6a is a direction parallel to the opening and closing operation directions of the right car door 7a and the left car door 7b, and is Figure 4 the left-right direction.

[0060] The right car door 7a and the left car door 7b each have a car door panel 33 and a car door hanger 34. Each car door hanger 34 is fixed to the upper part of the corresponding car door panel 33. The right car door 7a and the left car door 7b are suspended from the car door track 32 and perform opening and closing operations along the car door track 32.

[0061] A car door interlocking mechanism (not shown) and a door motor (not shown) are provided on the car door frame 31. The car door interlocking mechanism mechanically interlocks the right car door 7a and the left car door 7b with each other. The output of the door motor is transmitted to the right car door 7a and the left car door 7b via the car door interlocking mechanism. Thus, the right car door 7a and the left car door 7b perform opening and closing operations.

[0062] A first unlocking mechanism 41 is provided on the right car door 7a which is one of a pair of car doors. When the right car door 7a and the left car door 7b at each of the multiple floor levels where the first floor landing entrance 10a is provided are opened, the first unlocking mechanism 41 unlocks the first interlock device 21a.

[0063] The first unlocking mechanism 41 includes a first door stop side door knife 42 and a first door pocket side door knife 43. The first door stop side door knife 42 and the first door pocket side door knife 43 are provided on the car door panel 33 of the right car door 7a.

[0064] The first door pocket side door knife 43 can move relative to the right car door 7a in the width direction of the car entrance 6a. By moving the first door pocket side door knife 43 relative to the right car door 7a, the interval between the first door stop side door knife 42 and the first door pocket side door knife 43 changes.

[0065] A first working mechanism 44 is provided between the car door frame 31 and the right car door 7a. The first working mechanism 44 moves the first door pocket side door knife 43 relative to the right car door 7a during the opening and closing operation of the right car door 7a.

[0066] The first unlocking mechanism 41 clamps the fixed side interlock roller 24 and the movable side interlock roller 25 of the first floor landing door device between the first door stop side door knife 42 and the first door pocket side door knife 43. Thereby, the first unlocking mechanism 41 rotates the latch 23, unlocks the first interlock device 21a, and moves the first right floor landing door 8a integrally with the right car door 7a.

[0067] A second unlocking mechanism 45 is provided on the left car door 7b which is the other of a pair of car doors. When the right car door 7a and the left car door 7b at the floor level where the second floor landing entrance 10b is provided are opened, the second unlocking mechanism 45 unlocks the second interlock device 21b.

[0068] The installation height of the second unlocking mechanism 45 relative to the car entrance 6a is different from that of the first unlocking mechanism 41 relative to the car entrance 6a. Specifically, the installation position of the second unlocking mechanism 45 relative to the car entrance 6a is higher than that of the first unlocking mechanism 41 relative to the car entrance 6a.

[0069] The second unlocking mechanism 45 includes a second door stop side door knife 46 and a second door pocket side door knife 47. The second door stop side door knife 46 and the second door pocket side door knife 47 are provided on the car door panel 33 of the left car door 7b.

[0070] The second door pocket side door knife 47 is capable of moving in the width direction of the car entrance 6a relative to the left car door 7b. By moving the second door pocket side door knife 47 relative to the left car door 7b, the interval between the second door stop side door knife 46 and the second door pocket side door knife 47 changes.

[0071] A second working mechanism 48 is provided on the car door frame 31 and the left car door 7b. The second working mechanism 48 moves the second door pocket side door knife 47 during the opening and closing operation of the left car door 7b.

[0072] The second unlocking mechanism 45 clamps the fixed side interlock roller 24 and the movable side interlock roller 25 of the second landing door device between the second door stop side door knife 46 and the second door pocket side door knife 47. Thereby, the second unlocking mechanism 45 rotates the latch 23, unlocks the second interlock device 21b, and moves the second left landing door 9b integrally with the left car door 7b.

[0073] Figure 5 is a schematic illustration showing Figure 2 the first interlock device 21a of Figure 4 and the positional relationship between the first unlocking mechanism 41 and the second unlocking mechanism 45 of

[0074] Figure 6 is a schematic illustration showing Figure 3 the second interlock device 21b of Figure 4 and the positional relationship between the first unlocking mechanism 41 and the second unlocking mechanism 45 of

[0075] In such an elevator device, the second interlock device 21b is arranged with a direction opposite to that of the first interlock device 21a in the left - right direction. In addition, the first unlocking mechanism 41 for unlocking the first interlock device 21a is provided on the right car door 7a which is one of the pair of car doors. And the second unlocking mechanism 45 for unlocking the second interlock device 21b is provided on the left car door 7b which is the other of the pair of car doors.

[0076] Therefore, the installation positions of the first interlock device 21a and the second interlock device 21b can be changed according to the landing floor, and the degree of freedom of the installation positions of the first interlock device 21a and the second interlock device 21b can be improved.

[0077] In addition, the installation height of the second unlocking mechanism 45 relative to the car entrance 6a is different from the installation height of the first unlocking mechanism 41 relative to the car entrance 6a. Therefore, the limitation of the difference in height dimension h1 between the first floor landing entrance 10a and the height dimension h2 of the second floor landing entrance 10b can be alleviated. That is, the limitation of the difference in height dimensions between multiple different floor landing entrances can be alleviated.

[0078] In addition, the first interlocking device 21a and the second interlocking device 21b are arranged outside the landing door panel 16. Therefore, even when a glass window is provided on the landing door panel 16, the first interlocking device 21a and the second interlocking device 21b cannot be seen from the landing.

[0079] Embodiment 2.

[0080] Next, Figure 7 is a front view of the car door device in the elevator device of Embodiment 2 as viewed from the landing side. A car door locking mechanism 51 is provided on the car 6.

[0081] When the car 6 is outside the opening area, the car door locking mechanism 51 prevents the opening operation of the right car door 7a and the left car door 7b. The opening area is an area in the lifting stroke of the car 6 where the opening operation of the right car door 7a and the left car door 7b is permitted when the car 6 stops.

[0082] In addition, when the car 6 is inside the opening area, the car door locking mechanism 51 permits the opening operation of the right car door 7a and the left car door 7b.

[0083] The car door locking mechanism 51 has a fixed locking member 52 and an L-shaped rotating member 53. The fixed locking member 52 is fixed to the car door panel 33 of the right car door 7a. A groove 52a is provided in the fixed locking member 52.

[0084] The middle part of the rotating member 53 is connected to the door panel 33 of the left car door 7b so as to be rotatable. The lower end part of the rotating member 53 is connected to the second door stopper side door knife 46 so as to be rotatable. A locking pin 53a is provided at the upper end part of the rotating member 53.

[0085] In a state where the car 6 is outside the opening area, there is no fixed side interlocking roller 24 and movable side interlocking roller 25 between the second door stopper side door knife 46 and the second door jamb side door knife 47. In this state, if the right car door 7a and the left car door 7b are to be opened, the rotating member 53 rotates Figure 7 in the clockwise direction, and the locking pin 53a enters the groove 52a, preventing the opening operation.

[0086] On the other hand, in a state where the car 6 is within the opening area at the lowest floor, there are a fixed-side interlock roller 24 and a movable-side interlock roller 25 of the second interlock device 21b between the second door stop side door knife 46 and the second door pocket side door knife 47. In this state, if the right car door 7a and the left car door 7b are opened, the rotation of the rotating member 53 in the Figure 7 clockwise direction is restricted, the locking pin 53a does not enter the groove 52a, and the opening operation is permitted.

[0087] The car door unlocking interlock device in the second embodiment is the second interlock device 21b. In addition, the car door unlocking mechanism is the second unlocking mechanism 45. The car door unlocking mechanism is the unlocking mechanism corresponding to the car door unlocking interlock device among the first unlocking mechanism 41 and the second unlocking mechanism 45.

[0088] When the car 6 stops at the lowest floor, by bringing the second unlocking mechanism 45 into contact with the second interlock device 21b, the car door locking mechanism 51 permits the opening operations of the right car door 7a and the left car door 7b.

[0089] Figure 8 It is a front view of the first landing door device in the elevator device of the second embodiment as viewed from the hoistway side. Figure 9 It is an enlarged front view showing the Figure 8 main part.

[0090] An auxiliary guide 61 is provided on the landing door frame 11. A movable body 62 is provided on the auxiliary guide 61. The movable body 62 is guided by the auxiliary guide 61 and can move in the width direction of the first landing entrance 10a.

[0091] An auxiliary unlocking member 63 is provided on the movable body 62. The auxiliary unlocking member 63 is provided at a position corresponding to the second unlocking mechanism 45. In addition, the auxiliary unlocking member 63 can move along with the movable body 62 in a direction parallel to the opening and closing operation directions of the right car door 7a and the left car door 7b along the auxiliary guide 61. In this example, the auxiliary unlocking member 63 is a roller identical to the fixed-side interlock roller 24.

[0092] When the first right landing door 8a and the first left landing door 8b are in the fully closed position, the auxiliary unlocking member 63 is located at the Figure 8 and Figure 9 indicated standby position. When the auxiliary unlocking member 63 is in the standby position, a vertical line C1 passing through the center of the auxiliary unlocking member 63 passes through the center of the fixed-side interlock roller 24 of the second landing door device.

[0093] Figure 10 It schematically shows the first unlocking mechanism 41 and the second unlocking mechanism 45 of the Figure 7 and Figure 8Explanatory drawing of the positional relationship between the first interlock device 21a and the auxiliary unlocking member 63. When the car 6 stops at a landing other than the lowest landing, by bringing the second unlocking mechanism 45 into contact with the auxiliary unlocking member 63, the car door locking mechanism 51 permits the opening operation of the right car door 7a and the left car door 7b.

[0094] Other configurations of the second embodiment are the same as those of the first embodiment.

[0095] In such an elevator apparatus, an auxiliary unlocking member 63 is provided at a landing where the first interlock device 21a that is not a car door unlocking interlock device is provided. Further, the auxiliary unlocking member 63 is provided at a position corresponding to the second unlocking mechanism 45. And by bringing the second unlocking mechanism 45 into contact with the auxiliary unlocking member 63, the car door locking mechanism 51 also permits the opening operation of the right car door 7a and the left car door 7b.

[0096] Therefore, even in an elevator apparatus in which the car 6 is provided with the car door locking mechanism 51, the degree of freedom in the installation positions of the first interlock device 21a and the second interlock device 21b can be increased.

[0097] In addition, in the second embodiment, the second interlock device 21b is a car door unlocking interlock device, and the second unlocking mechanism 45 is a car door unlocking mechanism. However, the first interlock device 21a may be a car door unlocking interlock device, and the first unlocking mechanism 41 may be a car door unlocking mechanism.

[0098] In this case, the car door locking mechanism 51 is provided with respect to Figure 7 a structure that is symmetric about the center in the width direction of the car entrance 6a and is lower than the position of Figure 7 ...

[0099] Figure 11 is an explanatory drawing schematically showing the positional relationship between the first unlocking mechanism 41 and the second unlocking mechanism 45 and the second interlock device 21b and the auxiliary unlocking member 63 when the first interlock device 21a is a car door unlocking interlock device.

[0100] In Figure 11 ..., the auxiliary unlocking member 63 is provided at the second right landing door 9a in each landing where the second interlock device 21b that is not a car door unlocking interlock device is provided. Further, the auxiliary unlocking member 63 is provided at a position corresponding to the second unlocking mechanism 45 in the second right landing door 9a.

[0101] In addition, in the structure of Figure 11 ..., as in Figure 12As shown, a maintenance unlocking member 65 and a maintenance guiding body 66 can also be provided above the entrance 10a of the first landing on the uppermost layer in the hoistway 1. The maintenance unlocking member 65 is guided by the maintenance guiding body 66 and can move in a direction parallel to the opening and closing movement direction of the right car door 7a and the left car door 7b. In this example, the maintenance unlocking member 65 is a roller identical to the auxiliary unlocking member 63.

[0102] In this case, the first unlocking mechanism 41 can also be extended upward so that the vertical dimension of the first unlocking mechanism 41 is larger than the vertical dimension of the second unlocking mechanism 45.

[0103] When the car 6 is moved to a position above the opening area of the uppermost layer and maintenance work is carried out on the car 6, before the operator moves the car 6 to a position above the opening area, the operator moves the maintenance unlocking member 65 to a position directly above the first unlocking mechanism 41. After that, the car 6 is moved to a position above the uppermost layer, so that the maintenance unlocking member 65 faces the first unlocking mechanism 41.

[0104] When carrying out maintenance work on the car 6, in case the car 6 cannot be moved, the operator moves from the ceiling rescue opening into the car 6 and manually moves the right car door 7a and the left car door 7b in the opening direction.

[0105] At this time, the first unlocking mechanism 41 abuts against the maintenance unlocking member 65, allowing the opening movement of the right car door 7a and the left car door 7b. That is, by making the first unlocking mechanism 41 abut against the maintenance unlocking member 65, the car door locking mechanism 51 also allows the opening movement of the right car door 7a and the left car door 7b.

[0106] After moving the right car door 7a and the left car door 7b in the opening direction to a certain extent, the operator prevents the right car door 7a and the left car door 7b from moving in the closing direction through a door fixing auxiliary tool (not shown). After that, the operator manually unlocks the first interlock device 21a and manually moves the first right landing door 8a and the first left landing door 8b in the opening direction, and can escape to the landing.

[0107] Thus, even in an elevator device provided with the car door locking mechanism 51, the car 6 can be closer to the hoistway equipment for maintenance work, and the workability of the maintenance work on the car 6 can be improved. After the maintenance work is completed, the maintenance unlocking member 65 moves to a position deviated from directly above the first unlocking mechanism 41.

[0108] The auxiliary unlocking member 63 and the maintenance unlocking member 65 are not limited to rollers respectively.

[0109] In addition, the structure of the car door locking mechanism 51 is not limited to the above structure.

[0110] Embodiment 3

[0111] Next, the elevator apparatus according to Embodiment 3 will be described. In Embodiment 3, since the height dimensions of the landing entrances at all landing levels are the same or the difference in the height dimensions of the landing entrances is small, the installation height of the first unlocking mechanism 41 relative to the car entrance 6a is the same as the installation height of the second unlocking mechanism 45 relative to the car entrance 6a.

[0112] Figure 13 It is a front view of the lowest landing door apparatus in the elevator apparatus according to Embodiment 3 as viewed from the hoistway 1 side.

[0113] A pit unlocking mechanism 26 is provided on the second interlocking device 21b provided at the lowest level. The pit unlocking mechanism 26 has, for example, an operating member that is flexible. As the operating member, a wire or a rope is used, for example. The operating member is connected to the latch 23.

[0114] A pit ladder (not shown) is provided in the pit of the hoistway 1. The pit ladder is used for an operator to move between the lowest landing and the pit. By an operator operating the operating member from the pit or the pit ladder, the second interlocking device 21b is manually unlocked.

[0115] Generally, the pit unlocking mechanism 26 is provided on the landing door on the side where the latch 23 is provided. In addition, the pit ladder is provided below the landing door on which the pit unlocking mechanism 26 is provided.

[0116] However, if it is desired to provide the latch 23 on the landing doors on the same left and right side at all landing levels, due to the layout of the elevator apparatus, it is sometimes impossible to provide the pit ladder below the landing door on the side where the latch 23 is provided. In this case, the pit ladder and the pit unlocking mechanism 26 are far apart left and right, and it is difficult to operate the pit unlocking mechanism 26 from the pit ladder.

[0117] In contrast, in Embodiment 3, a first unlocking mechanism 41 and a second unlocking mechanism 45 are provided on the car 6, and the second interlocking device 21b is arranged on the side opposite to each first interlocking device 21a at other landing levels.

[0118] Therefore, the degree of freedom in the installation positions of the first interlocking device 21a and the second interlocking device 21b can be increased. As a result, regardless of the layout of the elevator apparatus, the latch 23 and the pit unlocking mechanism 26 can be arranged on the same side with respect to the center in the width direction of the second landing entrance 10b. As a result, the operation of the pit unlocking mechanism 26 from the pit ladder can be facilitated.

[0119] In addition, in Embodiment 3, the height dimensions of a plurality of different landing entrances may also be different.

[0120] In addition, in Embodiments 1 to 3, the number of landing entrances with larger height dimensions is not particularly limited, and may be two or more.

[0121] In addition, in Embodiments 1 to 3, the number of landing entrances with smaller height dimensions is not particularly limited. For example, the height dimension of the landing entrance at the lowest floor may also be smaller than the height dimensions of the landing entrances other than the lowest floor.

[0122] In addition, in Embodiments 1 to 3, as long as the first interlock device 21a or the second interlock device 21b can be unlocked by the first unlocking mechanism 41 or the second unlocking mechanism 45, the number of types of height dimensions of the landing entrance may also be three or more.

[0123] In addition, in Embodiments 1 to 3, the structure and dimensions of the first interlock device may be different from the structure and dimensions of the second interlock device.

[0124] In addition, in Embodiments 1 to 3, the car door device and the landing door device may also be single-opening door devices.

[0125] In addition, in Embodiments 1 to 3, the number of door panels of the car door device and the landing door device may be one, or may be three or more.

[0126] In addition, the layout of the elevator device is not limited to Figure 1 the layout shown. For example, the traction machine 3 may also be provided at a position other than the top of the hoistway 1.

[0127] In addition, the elevator device may also be an elevator device with a machine room, a double-deck elevator, an elevator in a single hoistway and multi-car mode, etc. The single hoistway and multi-car mode is a mode in which the upper car and the lower car arranged directly below the upper car move up and down independently in a common hoistway.

[0128] Reference Signs Explanation

[0129] 1: Hoistway, 6: Car, 6a: Car entrance, 7a: Right car door, 7b: Left car door, 8a: First right landing door, 8b: First left landing door, 9a: Second right landing door, 9b: Second left landing door, 10a: First landing entrance, 10b: Second landing entrance, 21a: First interlock device, 21b: Second interlock device, 41: First unlocking mechanism, 45: Second unlocking mechanism, 51: Car door locking mechanism, 63: Auxiliary unlocking component, 65: Maintenance unlocking component.

Claims

1. An elevator device, comprising: A car, which is provided with a car entrance and exit and moves up and down in a hoistway; A pair of car doors, which are provided on the car and open and close the car entrance and exit by mechanically interlocking and moving in opposite directions; A pair of first landing doors, which open and close a first landing entrance and exit by mechanically interlocking and moving in opposite directions; A pair of second landing doors, which open and close a second landing entrance and exit provided on a landing floor different from the first landing entrance and exit by mechanically interlocking and moving in opposite directions; A first interlock device, which is provided above the first landing entrance and exit and prevents the pair of first landing doors from opening; A second interlock device, which is provided above the second landing entrance and exit and is arranged with a left-right opposite orientation to the first interlock device to prevent the pair of second landing doors from opening; A first unlocking mechanism, which is provided on one of the pair of car doors and unlocks the first interlock device during the opening movement of the pair of car doors; And A second unlocking mechanism, which is provided on the other of the pair of car doors and unlocks the second interlock device during the opening movement of the pair of car doors.

2. The elevator device according to claim 1, wherein The installation height of the second unlocking mechanism relative to the car entrance and exit is different from the installation height of the first unlocking mechanism relative to the car entrance and exit.

3. The elevator device according to claim 2, wherein The elevator device further includes a car door locking mechanism, which is provided on the car, prevents the pair of car doors from opening when the car is outside the opening area, and allows the pair of car doors to open when the car is inside the opening area. By making a car door unlocking mechanism abut against a car door unlocking interlock device which is either the first interlock device or the second interlock device, the car door locking mechanism allows the pair of car doors to open, where the car door unlocking mechanism is the unlocking mechanism corresponding to the car door unlocking interlock device among the first unlocking mechanism and the second unlocking mechanism. At a position corresponding to the car door unlocking mechanism on the landing floor where the other of the first interlock device and the second interlock device is provided, an auxiliary unlocking component capable of moving in a direction parallel to the opening and closing movement direction of the pair of car doors is provided. By making the car door unlocking mechanism abut against the auxiliary unlocking component, the car door locking mechanism also allows the pair of car doors to open.

4. The elevator device according to claim 3, wherein A maintenance unlocking component is provided in the hoistway. By moving the car to a position above the uppermost floor, the maintenance unlocking component is opposed to the car door unlocking mechanism. The maintenance unlocking component can move in a direction parallel to the opening and closing movement direction of the pair of car doors. By making the car door unlocking mechanism abut against the maintenance unlocking component, the car door locking mechanism also allows the pair of car doors to open.

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