Elevator

Abstract

To provide an elevator that makes it easier for a person to grasp a rod member above a car, improves the safety of the person on the car, and suppresses damage to the rod member caused by contact with a ceiling.SOLUTION: An elevator 10 comprises a car 11 going up / down in a hoistway 20 and defining a car room, a stretchable rod member 41 provided above the car 11 and extending approximately in the height direction of the car 11, and an operation part 42 to expand / contract the rod member 41. In this way, the elevator makes it easier for the people in the car 11 to grasp the rod member 41 extending approximately in the height direction, improves safety for the people in the car 11, and suppresses damage to the rod member 41 caused by contact with a ceiling 45.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to elevators. [Background technology]

[0002] A conventional elevator is described in Patent Document 1. This elevator is equipped with a handrail on the car that protrudes upward in the height direction of the car. This allows maintenance workers to grab the handrail when moving on the car, such as when working on the car, and allows them to move safely on the car. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-087738 A Summary of the Invention [Problem to be solved by the invention]

[0004] Depending on the location of the maintenance worker, the equipment installed on the car may make it difficult for the maintenance worker to grasp the handrail. It is also preferable that the maintenance worker can grasp the handrail easily regardless of his / her height. On the other hand, if the length of the rod member is increased in order to solve these problems, the rod member may come into contact with the ceiling of the elevator shaft, causing damage to the rod member or the ceiling. Therefore, an object of the present disclosure is to provide an elevator that allows a person to easily grasp the rod member extending in the approximate height direction on the car, thereby increasing the safety of the person on the car, and suppressing damage to the rod member due to contact with the ceiling. [Means for solving the problem]

[0005] In order to solve the above problems, the elevator of the present disclosure includes a car that rises and falls in a hoistway and defines a car chamber, an extendable rod member that is provided above the car and extends approximately in the height direction of the car, and an operating unit that extends and contracts the rod member.

[0006] According to the present disclosure, since the cage is provided with an extendable rod member provided on the upper side of the cage and extending substantially in the height direction of the cage, and an operating unit that extends the rod member, the rod member can be extended by operating the operating unit when it is difficult to grasp the rod member during movement on the cage, etc. Therefore, even in such a case, the rod member can be firmly grasped, thereby increasing the safety of the person on the cage.

[0007] In addition, for example, when maintenance of the elevator shaft or the like is completed and the elevator is returned to normal operation, the length of the rod member can be shortened by operating the operating unit, thereby preventing the rod member from contacting the ceiling during normal operation. Therefore, according to the elevator of the present disclosure, a person can easily grasp the rod member extending in the approximate height direction on the car, thereby increasing the safety of the person on the car and preventing the rod member from being damaged by contact with the ceiling.

[0008] In addition, a driveable state in which the hoist motor that raises and lowers the cage can be driven and a drive-prohibited state in which driving of the hoist motor is prohibited can be selected, and a motor operating unit is included in the operating unit, so that the driveable state cannot be selected when the rod member is at a length other than the shortest length.

[0009] According to the above configuration, the car is prohibited from moving when the length of the bar is longer than the minimum length and there is a high possibility that a person will grab the bar. This further increases safety when a person using the bar is moving on the car, and an extremely safe elevator can be realized.

[0010] The elevator may also be equipped with a car call operation unit installed at a landing for calling the car, and a destination floor designation operation unit installed within the car for designating the destination floor of the car, and may be configured to select between a normal mode in which the car moves based on operation of the car call operation unit and the destination floor designation operation unit, and a maintenance and inspection mode in which the hoist motor that raises and lowers the car can be driven independently of operation of the car call operation unit and the destination floor designation operation unit, and the normal mode may not be selectable when the rod member is at its maximum length.

[0011] According to the above configuration, the rod member can be prevented from contacting the ceiling of the hoistway when the elevator is in normal operation, and damage to the rod member or the ceiling caused by such contact can be prevented.

[0012] In addition, a motor operation unit may be provided that selects between a driveable state in which the hoist motor that raises and lowers the cage is driveable and a drive-prohibited state in which drive of the hoist motor is prohibited, and the operation unit may be provided with a motor operation unit, and when the driveable state is selected, the rod member may automatically contract, while when the drive-prohibited state is selected, the rod member may automatically extend.

[0013] According to this configuration, it is possible to omit the operation of extending the bar when the car is in a drive-prohibited state, and it is also possible to prevent forgetting to return the bar to its shortest length.

[0014] The elevator also includes a car call operation unit installed at a landing for calling the car, and a destination floor designation operation unit installed inside the car for designating the destination floor of the car, and is capable of selecting between a normal mode in which the car moves based on operation of the car call operation unit and the destination floor designation operation unit, and a maintenance and inspection mode in which the hoist motor that raises and lowers the car can be driven independently of operation of the car call operation unit and the destination floor designation operation unit, and the rod member may automatically retract in conjunction with the normal mode, while the rod member may automatically extend in conjunction with the maintenance and inspection mode.

[0015] Maintenance of floor landing sensors and other devices installed on the walls of the elevator shaft may be performed while the car is moved as needed. In such cases, it may be preferable for the rod member to be long and easy to grasp even when the car is moving.

[0016] According to this configuration, the rod member automatically lengthens in the maintenance and inspection mode, so that maintenance work can be safely performed while moving the car. Also, the rod member can be prevented from becoming longer during normal operation when the car moves based on the operation of the car call operation unit and the destination floor designation operation unit. Therefore, the rod member can be prevented from contacting the ceiling of the elevator shaft during normal operation.

[0017] The operating portion may be provided at an upper end of the rod member.

[0018] According to this configuration, since the operating unit is provided at the upper end of the rod member, when the rod member needs to be extended or retracted, the rod member can be quickly extended or retracted by operating the rod member itself by hand. Therefore, convenience can be improved. In addition, since the operating unit is provided at the upper end of the rod member, it is easy to operate the operating unit, and it is also possible to prevent erroneous operation of the operating unit when the rod member is gripped without intending to operate it.

[0019] The car may also be provided with an air conditioner, at least a portion of which is installed above the car, and at least a portion of the air conditioner is located closer to the landing side than the rod member in the depth direction of the car, such that when the rod member is at its shortest length, the upper end of the rod member is located below the upper end of the air conditioner, while when the rod member is at its longest length, the upper end of the rod member is located above the upper end of the air conditioner.

[0020] At least a part of the air conditioner that conditions the air in the car room may be arranged so as to protrude upward from the top surface of the car. Also, at least a part of the air conditioner may be arranged closer to the landing than the rod member in the depth direction of the car. In this case, when a person (e.g., a maintenance worker) moves from the landing to the car, at least a part of the air conditioner may get in the way and make it difficult to grasp the rod member.

[0021] In contrast, according to the present configuration, even in such a situation, the length of the bar can be increased, making it easier to grasp the bar, and thus enabling people to move safely between the landing and the car.

[0022] In addition, one or more steps protrude upward in conjunction with the extending motion of the rod member, while the one or more steps retract in conjunction with the contracting motion of the rod member, and at least a part of the air conditioner may be located on the landing side of the one or more steps in the depth direction.

[0023] According to this configuration, one or more steps protrude upward in conjunction with the extending motion of the rod member. Therefore, not only does the rod member lengthen when a person moves between the landing and the top of the car, but the person can also use the steps as a stepping stool. This allows the person to move between the landing and the top of the car safely and easily. Effect of the Invention

[0024] According to the elevator of the present disclosure, people can easily grasp the rod members on the car, thereby increasing the safety of people on the car, and damage to the rod members from contact with the ceiling can also be prevented. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a schematic configuration diagram of an elevator according to an embodiment of the present disclosure. [Diagram 2] 13 is a schematic diagram showing the upper portion and surrounding area of ​​the basket when the rod members are in the most contracted state. FIG. [Diagram 3] 13 is a schematic diagram showing the upper portion and surrounding area of ​​the basket when the rod members are fully extended. FIG. [Figure 4] 11A and 11B are diagrams illustrating an extension / contraction mechanism of a rod member. [Diagram 5] 4A to 4C are diagrams illustrating the structure of a screw mechanism. [Figure 6] 13 is a schematic diagram showing a state of the step structure when the rod member is most contracted. FIG. [Figure 7]13 is a schematic diagram showing a state of the step structure when the rod member is maximally extended. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In addition, when multiple embodiments and modified examples are included below, it is assumed from the beginning that new embodiments will be constructed by appropriately combining the characteristic parts of those. In the following examples, the same components are given the same symbols in the drawings, and duplicated explanations are omitted. In addition, multiple drawings include schematic diagrams, and the dimensional ratios of length, width, height, etc. of each member between different drawings do not necessarily match. In addition, in the following drawings and examples, the X direction indicates the depth direction of the cage, the Y direction indicates the width direction of the cage, and the Z direction indicates the height direction of the cage. The X direction, the Y direction, and the Z direction are mutually orthogonal. Among the components described below, those not described in the independent claim indicating the highest concept are optional components and are not essential components.

[0027] Fig. 1 is a schematic configuration diagram of an elevator 10 according to an embodiment of the present disclosure. As shown in Fig. 1, the elevator 10 includes a car 11, a hoist 12, a counterweight 13, a wire rope 14, a car call operation unit 15, a destination floor designation operation unit 16, a mode selection unit 17, a landing position detection sensor 18, and a control panel 19 serving as a control device. The control panel 19 and the hoist 12 are provided in a machine room 30 located above a hoistway 20. The control device (control panel) and the hoist may be provided above a pit located below the hoistway.

[0028] The car 11 and the counterweight 13 are each guided by a guide rail provided in the hoistway 20. In this embodiment, the wire rope 14 is wound around the hoist 12, with one end fixed to the top of the car 11 and the other end fixed to the counterweight 13. The car call operation unit 15 is an operation unit that calls the car 11 and specifies the direction of movement of the car 11, and is provided at the landings 22 of all floors. The destination floor designation operation unit 16 is provided in the car 11 to specify the destination floor of the car 11.

[0029] The mode selection unit 17 is disposed, for example, in the car 11. In this case, the destination floor designation operation unit 16 provided in the car 11 may be installed on a slide cover that is slidable in the Z direction. When the slide cover is slid in the Z direction from a normal position when the elevator 10 is operating normally, the mode selection unit 17 disposed on the back side of the slide cover during normal operation of the elevator 10 may be exposed to the outside. The mode selection unit 17 is electrically connected to the control panel 19 via a control cable.

[0030] The mode selection unit 17 is configured, for example, with a touch panel, and allows a person to know whether the normal mode or the maintenance and inspection mode is selected. The selected mode may be confirmed by a change in color of the touch panel, or the selected mode may be displayed on the touch panel.

[0031] A person can input a signal to the control panel 19 using the mode selection unit 17, and the mode can be switched between a normal mode and a maintenance and inspection mode. When the normal mode is selected, the control panel 19 appropriately controls the number of revolutions and the direction of rotation of the hoist motor 12a based on the operation of the car call operation unit 15 and the destination floor designation operation unit 16, thereby causing the car 11 to ascend and descend in the hoistway 20. On the other hand, when the maintenance and inspection mode is selected, the operation of the car call operation unit 15 and the destination floor designation operation unit 16 is disabled, and the car 11 ascends and descends based on a signal from an information terminal (e.g., a laptop computer) connected to a connector located at a predetermined position on the elevator 10. Note that in the maintenance and inspection mode, the control panel 19 may be configured to perform control based on a wireless signal from the information terminal.

[0032] The landing position detection sensor 18 detects the landing position of the landing hall 22 where the car 11 lands. The landing position detection sensor 18 is composed of, for example, a vane 18a such as an iron plate provided at a hoistway position corresponding to the landing position of each floor, and a magnetic detector 18b that detects the vane 18a. The control panel 19, which has received stop position information from the landing position detection sensor 18, stops the car 11 at a predetermined position, and then controls a car door motor (not shown), so that the car door 32 and the landing door 31 linked thereto open, allowing people to get on and off the car 11. On the other hand, the control panel 19, which has received information such as the operation of a door closing button (not shown) present in the car 11, controls the car door motor (not shown), so that the car door 32 and the landing door 31 linked thereto close, and then the car 11 ascends and descends in the hoistway 20.

[0033] The elevator 10 further includes an extendable rod member (handle bar, three-point support bar) 41 that is provided on the upper side of the car 11 and extends substantially in the height direction of the car 11, and an operation unit 42 that extends and contracts the rod member 41. The structure that extends and contracts the rod member 41 will be described later with reference to Figures 4 and 5. The operation unit 42 is provided on the upper end of the rod member 41 and is configured, for example, as a push button whose upper end surface of the rod member 41 serves as a push surface 42a.

[0034] For example, when a person pushes up the pressing surface, the rod member 41 extends to the maximum length, whereas when a person pushes down the pressing surface, the rod member 41 retracts to the minimum length. Information inputted by the operation unit 42 is outputted to the control panel 19 wirelessly or by wire. In the elevator 10, when the rod member 41 is at its maximum length, the normal mode cannot be selected. For example, in the case of the mode selection unit 17 using the above-mentioned touch panel, the control panel 19, which has determined that the rod member 41 is in an extended state based on information from the operation unit 42, may not change the maintenance inspection mode to the normal mode even if the mode selection unit 17 is operated, and may display a message on the touch panel indicating that the rod member 41 is in an extended state.

[0035] Alternatively, when the mode selection unit 17 is composed of a switch or the like, the control panel 19, having determined that the rod member 41 is in an extended state based on information from the operation unit 42, may notify a person that the rod member 41 is in an extended state by sounding a buzzer provided in the cage 11, while preventing the maintenance and inspection mode from changing to the normal mode even if the mode selection unit 17 is operated.

[0036] Fig. 2 is a schematic diagram showing the upper periphery of the car 11 when the rod members 41 are in a most contracted state, and Fig. 3 is a schematic diagram showing the upper periphery of the car 11 when the rod members 41 are in a most extended state. As shown in Fig. 2, an outdoor unit 61 of an air conditioner 60 is installed on the upper side of the car 11 (above the car chamber 11a of the car 11) and on the landing 22 side in the X direction. The upper end of the outdoor unit 61 is located above the upper surface of the car 11.

[0037] 2 and 3, the outdoor unit 61 is located closer to the landing 22 than the rod member 41 in the X direction. The upper end of the rod member 41 is preferably located lower than the upper end of the outdoor unit 61 in the most contracted state, and is preferably located higher than the upper end of the outdoor unit 61 in the most extended state. With such a configuration, the rod member 41 can be prevented from interfering with work when it is contracted, i.e., when the rod member 41 is not needed, and when a person moves from the landing 22 onto the car 11, the person can easily grip the rod member 41, and the person can move more safely from the landing 22 onto the car 11.

[0038] As shown in Fig. 3, elevator 10 is configured so that when bar member 41 extends, step structure (one or more steps) 63 rises up from the top of car 11. In this way, when a person holds bar member 41 and moves between landing 22 and the top of car 11, he or she can use step structure 63 to move safely and quickly between landing 22 and the top of car 11.

[0039] 4 is a diagram illustrating the telescopic mechanism 70 of the rod member 41. As shown in Fig. 4, the telescopic mechanism 70 includes an electric motor 71 configured as a servo motor or the like, a rotating shaft 73 connected to an output shaft 71a of the electric motor 71 via a reducer 72 and housed in a cylindrical member 75 configuring an outer cylinder, a bearing 74 that rotatably supports the rotating shaft relative to the cylindrical member 75, and a screw mechanism 80.

[0040] 5 is a diagram for explaining the structure of the screw mechanism 80. As shown in FIG. 5, the screw mechanism 80 has a ball screw shaft 81, a plurality of balls 82, a ball screw nut 83, a first seal 84, and a second seal 85. The ball screw shaft 81 is connected to one side of the rotating shaft 73 in the axial direction, extends in the axial direction of the rotating shaft 73, and rotates synchronously with the rotating shaft 73. The balls 82 are disposed between the ball screw shaft 81 and the ball screw nut 83 and roll thereon. The ball screw nut 83 has a through hole through which the ball screw shaft 81 is inserted, and the balls 82 are disposed between the ball screw nut 83 and the screw groove of the ball screw shaft 81.

[0041] The first seal 84 is an annular member that matches the shape of the ball screw shaft 81, and comes into contact with the ball rolling portion 86 of the ball screw shaft 81 at one axial end of the ball screw nut 83, preventing the lubricant sealed in the ball screw nut 83 from leaking out of the ball screw nut. The second seal 85 comes into contact with the ball rolling portion 86 of the ball screw shaft 81 at the other axial end of the ball screw nut 83, similar to the first seal 84, preventing the lubricant from leaking out. Covers are provided on the outsides of the first seal 84 and the second seal 85, and the seals are fixed in place by these covers.

[0042] The telescopic mechanism 70 has a rod 88, and the rod 88 has a configuration in which the tip side of the cylindrical member is sealed. One axial side of the rod 88 is screwed and fixed to a ball screw nut 83. The rod 88 is key-engaged with the cylindrical member 75 by a key 89, and is substantially non-rotatable relative to the cylindrical member 75 and slidable relative to the cylindrical member 75 in the axial direction.

[0043] In this configuration, when the electric motor 71 is driven to rotate the rotating shaft 73 in the first direction, the ball screw nut 83 moves to one side of the axial direction of the ball screw shaft 81 relative to the ball screw shaft 81, so that the rod 88 moves in a direction to be accommodated in the tubular member 75, and as a result, the rod member 41 is contracted. On the other hand, when the electric motor 71 is driven to rotate the rotating shaft 73 in the second direction, the ball screw nut 83 moves to the other side of the axial direction of the ball screw shaft 81 relative to the ball screw shaft 81, so that the rod 88 moves in a direction to protrude from the tubular member 75, and as a result, the rod member 41 is extended. Note that the extension mechanism of the rod member 41 is not limited to the extension mechanism described in Figs. 4 and 5, and may be any other extension mechanism. For example, a hydraulic cylinder or the like may be used as the extension mechanism of the rod member 41.

[0044] Next, the lifting mechanism of the step structure 63 will be described. Fig. 6 is a schematic diagram showing the step structure 63 in a state where the rod members 41 are most contracted, and Fig. 7 is a schematic diagram showing the step structure 63 in a state where the rod members 41 are most extended. Note that the rod members 41 are not shown in Figs. 6 and 7. As shown in Fig. 6, the step structure 63 has a plurality of steps 63a, and each step 63a has a platform 64 and a telescopic shaft 65 that telescopically extends in the height direction.

[0045] The control panel 19 controls the length of the telescopic shaft 65 of each staircase 63a based on a signal from the operating unit 42 of the rod member 41. The telescopic mechanism of each telescopic shaft 65 can be configured similarly to the mechanism described with reference to Figures 4 and 5. As shown in Figure 6, when the rod member 41 is in the most contracted state, for example, the upper surfaces of all the staircases 63a are at approximately the same height position and spread out horizontally.

[0046] On the other hand, as shown in Fig. 7, when the rod member 41 is in the most extended state, the telescopic shaft 65 of each staircase 63a is extended so that the height of the upper surface of the staircase 63a closer to the outdoor unit 61 in the depth direction is higher. More specifically, the telescopic shafts 65 of all the staircases 63a have different maximum extension lengths. Also, the telescopic shafts 65 of the staircases 63a closer to the outdoor unit 61 in the depth direction have a longer maximum extension length.

[0047] When the operating unit 42 is operated to extend the rod member 41, the control panel 19 controls the electric motor 69 for extending and retracting the telescopic shaft 65 of each staircase 63a based on a signal from the operating unit 42 of the rod member 41 so that the telescopic shaft 65 of each staircase 63a has a maximum length. On the other hand, when the operating unit 42 is operated to retract the rod member 41, the control panel 19 controls the electric motor 69 based on a signal from the operating unit 42 of the rod member 41 so that the telescopic shaft 65 of each staircase 63a has a minimum length. As a result, the rod member 41 extends and the step structure 63 rises up, and the rod member 41 retracts and the step structure 63 disappears.

[0048] As described above, the elevator 10 of the present disclosure comprises a car 11 that rises and descends in a hoistway 20 and defines a car chamber 11a, an extendable rod member 41 that is provided above the car 11 and extends approximately in the height direction of the car 11, and an operating unit 42 that extends and contracts the rod member 41.

[0049] According to the present disclosure, since the car 11 is provided with an extendable rod member 41 that is provided on the upper side of the car 11 and extends substantially in the height direction of the car 11, and the operating unit 42 that extends and contracts the rod member 41, when it is difficult to grasp the rod member 41 during movement on the car 11, the operating unit 42 can be operated to extend the rod member 41. Therefore, even in such a case, the rod member 41 can be firmly grasped, thereby increasing the safety of the person on the car 11.

[0050] Furthermore, for example, when maintenance of the hoistway 20 etc. is completed and elevator 10 is returned to normal operation, the length of rod member 41 can be shortened by operating operation unit 42, thereby preventing rod member 41 from contacting ceiling 45 of hoistway 20 during normal operation. Therefore, according to elevator 10, a person can easily grasp rod member 41 extending substantially in the height direction on car 11, thereby increasing the safety of people on car 11 and also preventing rod member 41 from being damaged by contact with ceiling 45.

[0051] The car also includes a car call operation unit 15 installed at the landing 22 for calling the car 11, and a destination floor designation operation unit 16 installed inside the car 11 for designating the destination floor of the car 11, and a normal mode in which the car 11 moves based on the operation of the car call operation unit 15 and the destination floor designation operation unit 16, and a maintenance and inspection mode in which the hoist motor 12a that raises and lowers the car 11 can be driven regardless of the operation of the car call operation unit 15 and the destination floor designation operation unit 16, and it may be possible to make it impossible to select the normal mode when the rod member 41 is at its maximum length.

[0052] According to this configuration, the rod member 41 can be prevented from contacting the ceiling 45 of the hoistway 20 when the elevator 10 is operating normally, and damage to the rod member 41 or the ceiling 45 caused by such contact can be prevented.

[0053] In addition, the operating portion 42 may be provided at the upper end of the rod member 41 .

[0054] According to this configuration, since the operating unit 42 is provided at the upper end of the rod member 41, when it is necessary to extend or retract the rod member 41, the rod member 41 can be quickly extended or retracted by operating the rod member 41 itself by hand. Therefore, convenience can be improved. Also, since the operating unit 42 is provided at the upper end of the rod member 41, it is easy to operate the operating unit 42, and it is also possible to prevent erroneous operation of the operating unit 42 when the rod member 41 is gripped without intending to operate it.

[0055] In addition, the car may be equipped with an air conditioner 60, at least a part of which (in the above embodiment, the outdoor unit 61) is installed above the car 11, and at least a part of the air conditioner 60 is located closer to the landing 22 side than the rod member 41 in the depth direction of the car 11, so that when the rod member 41 is at its shortest length, the upper end of the rod member 41 is located below the upper end of the air conditioner 60, and when the rod member 41 is at its longest length, the upper end of the rod member 41 is located above the upper end of the air conditioner 60.

[0056] As in the above embodiment, at least a part of the air conditioner 60 that conditions the air in the car room may be arranged so as to protrude upward from the top surface of the car 11. Also, at least a part of the air conditioner 60 may be arranged closer to the landing 22 side than the rod member 41 in the depth direction of the car 11. In this case, when a person (e.g., a maintenance worker) moves from the landing 22 onto the car 11, at least a part of the air conditioner 60 may get in the way, making it difficult to grasp the rod member 41. In contrast, according to the present configuration, even in such a situation, the length of the rod member 41 can be increased, making it easier to grasp the rod member 41. Therefore, a person can move safely between the landing 22 and the top of the car 11.

[0057] In addition, a step structure (one or more steps) 63 protrudes upward in conjunction with the extending motion of the rod member 41, while the step structure 63 retracts in conjunction with the contracting motion of the rod member 41, and at least a part of the air conditioner 60 may be located closer to the landing 22 side than the step structure 63 in the depth direction.

[0058] According to this configuration, the step structure 63 protrudes upward in conjunction with the extending motion of the rod member 41. Therefore, not only does the rod member 41 become longer when a person moves between the landing 22 and the car 11, but the person can also use the step structure 63 as a stepping stool. Therefore, the person can move between the landing 22 and the car 11 safely and easily.

[0059] The present disclosure is not limited to the above-described embodiment and its modified examples, and various improvements and modifications are possible within the scope of the claims of the present application and their equivalents.

[0060] For example, in the above embodiment, a case has been described in which the air conditioner 60 is installed in the car 11, and the step structure 63 rises up or disappears in conjunction with the extension and contraction of the rod member 41. However, the elevator does not necessarily have to have the air conditioner 60 installed in the car 11, and does not necessarily have to have the step structure 63.

[0061] Also, the normal mode cannot be selected when the rod member 41 is at its maximum length, thereby preventing the rod member 41 from coming into contact with the ceiling 45 of the elevator shaft 20 when the normal mode is selected while the rod member 41 remains long.

[0062] However, the extension and contraction movement of the rod member 41 does not have to be linked to the movement of the car 11, and may be unrelated to the movement of the car 11. In this case, the operating unit 42 may be installed at the upper end of the rod member 41 so that the rod member 41 retracts when the upper surface of the operating unit 42 is pressed down. In this way, even if the user forgets to retract the rod member 41 and the normal mode is selected, the upper surface of the operating unit 42 is pressed down by the force from the ceiling 45 of the elevator shaft 20, so that the rod member 41 can be retracted.

[0063] Alternatively, a motor operating unit (e.g., a run switch) may be provided which is included in an operating unit that extends and retracts the rod member 41 and which can select between a drive enabled state in which the hoist motor 12a that raises and lowers the cage 11 can be driven and a drive prohibited state in which drive of the hoist motor 12a is prohibited, so that when the rod member 41 is at a length other than the shortest length, the motor operating unit cannot select the drive enabled state.

[0064] In this way, when the bar member 41 is longer than the minimum length, the cage 11 may be prevented from moving, allowing people to move on the cage 11 safely.

[0065] In addition, a motor operation unit may be provided which is included in an operation unit that selects between a driveable state in which the hoist motor 12a that raises and lowers the cage 11 is driveable and a drive-prohibited state in which drive of the hoist motor 12a is prohibited, and which extends and retracts the rod member 41, so that when the driveable state is selected, the rod member 41 automatically contracts, while when the drive-prohibited state is selected, the rod member 41 automatically extends.

[0066] In this way, the operation of extending the rod member 41 when the basket 11 is in a drive-prohibited state can be omitted, thereby increasing convenience and preventing forgetting to return the extended state of the rod member 41 to its shortest length.

[0067] Also, the elevator may be provided with a car call operation unit 15 installed at the landing 22 for calling the car 11, and a destination floor designation operation unit 16 installed in the car 11 for designating the destination floor of the car 11. Also, a normal mode in which the car 11 moves based on the operation of the car call operation unit 15 and the destination floor designation operation unit 16, and a maintenance and inspection mode in which the hoist motor 12a for raising and lowering the car 11 can be driven without depending on the operation of the car call operation unit 15 and the destination floor designation operation unit 16 may be selected. The rod member 41 may be automatically retracted in conjunction with the normal mode, while the rod member 41 may be automatically extended in conjunction with the maintenance and inspection mode. In other words, an operation unit (selection unit) for selecting the normal mode and the maintenance and inspection mode may be an operation unit for extending and retracting the rod member 41.

[0068] Maintenance of the landing position detection sensor 18 and the like installed on the wall of the elevator shaft 20 may be performed while appropriately moving the car 11. In such cases, it may be preferable for the rod member 41 to be long and easy to grasp even when the car 11 is moving.

[0069] According to this configuration, the rod member 41 automatically lengthens even in the maintenance and inspection mode, so that maintenance work can be safely performed while moving the car 11. Also, the rod member 41 can be prevented from lengthening during normal operation when the car 11 moves based on the operation of the car call operation unit 15 and the destination floor designation operation unit 16. Therefore, the rod member 41 can be prevented from contacting the ceiling 45 of the elevator shaft 20 during normal operation.

[0070] The elevator of the present disclosure may also be configured as follows. Configuration 1: An elevator comprising: a car that moves up and down a hoistway and defines a car chamber; an extendable rod member provided above the car and extending approximately in the height direction of the car; and an operating unit that extends and contracts the rod member. Configuration 2: An elevator as described in configuration 1, which selects between a driveable state in which a hoist motor that raises and lowers the car is driveable and a drive-prohibited state in which driving of the hoist motor is prohibited, and which is provided with a motor operation unit included in the operation unit, and which is configured so that the driveable state cannot be selected when the rod member is at a length other than the shortest length. Configuration 3: An elevator according to configuration 1 or 2, comprising a car call operation unit, installed at a landing, for calling the car, and a destination floor designation operation unit, installed within the car, for designating a destination floor of the car, wherein a normal mode in which the car moves based on operation of the car call operation unit and the destination floor designation operation unit, and a maintenance and inspection mode in which a hoist motor for raising and lowering the car can be driven independently of operation of the car call operation unit and the destination floor designation operation unit can be selected, and wherein the normal mode cannot be selected when the rod member is at its maximum length. Configuration 4: An elevator as described in configuration 1, which selects between a drive enabled state in which a hoist motor that raises and lowers the car is enabled and a drive prohibited state in which drive of the hoist motor is prohibited, and which is equipped with a motor operation unit included in the operation unit, and when the drive enabled state is selected, the rod member automatically contracts, while when the drive prohibited state is selected, the rod member automatically extends. Configuration 5: An elevator according to configuration 1 or 2, comprising a car call operation unit installed at a landing for calling the car, and a destination floor designation operation unit installed within the car for designating a destination floor of the car, wherein a normal mode in which the car moves based on operation of the car call operation unit and the destination floor designation operation unit, and a maintenance and inspection mode in which a hoist motor for raising and lowering the car can be driven independently of operation of the car call operation unit and the destination floor designation operation unit can be selected, and the rod member automatically retracts in conjunction with the normal mode, while the rod member automatically extends in conjunction with the maintenance and inspection mode. Configuration 6: The elevator described in configuration 1, wherein the operating unit is provided at the upper end of the rod member. Configuration 7: An elevator described in any one of configurations 1 to 6, comprising an air conditioner at least a portion of which is installed above the car, at least a portion of the air conditioner being located closer to the landing side than the rod member in the depth direction of the car, and when the rod member is at its shortest length, an upper end of the rod member being located below an upper end of the air conditioner, while when the rod member is at its longest length, an upper end of the rod member being located above the upper end of the air conditioner. Configuration 8: An elevator as described in Configuration 7, in which one or more steps protrude upward in conjunction with the extending motion of the rod member, and the one or more steps retract in conjunction with the contracting motion of the rod member, and at least a portion of the air conditioner is positioned closer to the landing than the one or more steps in the depth direction. [Explanation of symbols]

[0071] 10 elevator, 11 cage, 11a cage room, 12 hoist, 12a hoist motor, 13 counterweight, 14 wire rope, 15 cage call operation unit, 16 destination floor designation operation unit, 17 mode selection unit, 18 landing position detection sensor, 18a vane, 18b detector, 19 control panel, 20 elevator, 22 landing, 30 machine room, 31 landing door, 32 cage door, 41 rod member, 42 operation unit, 42a push-down surface, 45 ceiling, 60 air conditioner, 61 outdoor unit, 63 step structure, 63a staircase, 64 footstool, 65 telescopic shaft, 69,71 electric motor, 70 telescopic mechanism, 71a : output shaft, 72 reducer, 73 rotating shaft, 74 bearing, 75 cylindrical member, 80 screw mechanism, 81 ball screw shaft, 82 ball, 83 ball screw nut, 84 first seal, 85 second seal, 86 ball rolling portion, 88 rod, 89 key.

Claims

1. a car that ascends and descends in a hoistway and defines a car room; An extendable rod member provided on the upper side of the basket and extending approximately in the height direction of the basket; An operating unit that extends and retracts the rod member; Equipped with an elevator.

2. A motor operation unit is provided which selects a drive enable state in which a hoist motor that raises and lowers the car is driveable and a drive inhibit state in which drive of the hoist motor is inhibited, and is included in the operation unit; 2. The elevator according to claim 1, wherein the drivable state cannot be selected when the rod member is at a length other than the minimum length.

3. A car call operation unit installed at a landing for calling the car; A destination floor designation operation unit is provided in the car and designates a destination floor of the car, A normal mode in which the car moves based on the operation of the car call operation unit and the destination floor designation operation unit, and a maintenance and inspection mode in which a hoist motor for raising and lowering the car can be driven without depending on the operation of the car call operation unit and the destination floor designation operation unit can be selected.

3. The elevator according to claim 1, wherein the normal mode cannot be selected when the rod member is at its maximum length.

4. A motor operation unit is provided which selects a drive enable state in which a hoist motor that raises and lowers the car is driveable and a drive inhibit state in which drive of the hoist motor is inhibited, and is included in the operation unit; The elevator according to claim 1, wherein when the drive-enabled state is selected, the rod member automatically contracts, whereas when the drive-prohibited state is selected, the rod member automatically extends.

5. A car call operation unit installed at a landing for calling the car; A destination floor designation operation unit is provided in the car and designates a destination floor of the car, A normal mode in which the car moves based on the operation of the car call operation unit and the destination floor designation operation unit, and a maintenance and inspection mode in which a hoist motor for raising and lowering the car can be driven without depending on the operation of the car call operation unit and the destination floor designation operation unit can be selected.

3. The elevator according to claim 1 or 2, wherein the rod member automatically retracts in conjunction with the normal mode, while the rod member automatically extends in conjunction with the maintenance and inspection mode.

6. The elevator according to claim 1 , wherein the operating portion is provided at an upper end of the rod member.

7. An air conditioner at least a portion of which is installed above the cage, At least a part of the air conditioner is located closer to the landing side than the bar member in the depth direction of the car, 3. An elevator as described in claim 1 or 2, wherein when the rod member is at its shortest length, the upper end of the rod member is located below the upper end of the air conditioner, and when the rod member is at its longest length, the upper end of the rod member is located above the upper end of the air conditioner.

8. In response to the extension of the rod member, one or more steps protrude upward, while in response to the contraction of the rod member, the one or more steps retract. The elevator according to claim 7, wherein at least a portion of the air conditioner is located closer to the landing than the one or more steps in the depth direction.

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