Unlocking device

Abstract

The present invention provides an unlocking device that simplifies the configuration and can alert the worker while the key-operated locking device is being unlocked. [Solution] The unlocking device 10 comprises a rod-shaped key 11, a key guide unit 13, an action detection unit 16, a notification unit 21, and a control unit 15. The key 11 pushes up the movable hook member of the locking device to unlock the locking device. The key guide unit 13 supports the key 11 so that it can move. The action detection unit 16 detects the operation of the key 11 while the locking device is being unlocked by the key 11. The notification unit 21 alerts the worker to be careful. Based on the detection signal from the action detection unit 16, the control unit 15 causes the notification unit 21 to alert the worker to be careful.

Description

Technical Field

[0001] The present invention relates to an unlocking device for unlocking a locking device provided on a landing door of an elevator.

Background Art

[0002] Conventionally, landing doors provided on the landing side of an elevator are provided with a locking device that locks and unlocks the opening and closing operation in order to prevent passengers from falling into the hoistway. During inspection work, this locking device is unlocked and the landing door is opened. In addition, in order to prevent the operator from falling into the hoistway, after the landing door is opened a predetermined distance, it is necessary to check whether the car has stopped at a predetermined position.

[0003] As such a technique for unlocking a locking device, for example, there is one described in Patent Document 1. Patent Document 1 describes a technique including a handle, a key rod, a sleeve, and a buzzer. The buzzer sounds when the sleeve is disposed at the second position. The sleeve is disposed at the first position before the key rod is inserted into the keyhole. The sleeve is disposed at the second position in a state where the key rod is inserted into the keyhole and disposed at an operation position with respect to the unlocking member.

Prior Art Documents

Patent Documents

[0004] )

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the technique described in Patent Document 1, in order to prompt attention, it was necessary to provide a sleeve that moves separately from the key. As a result, the technique described in Patent Document 1 has a problem that not only the number of parts increases due to the sleeve, but also the configuration of the member that holds the sleeve becomes complicated.

[0006] Furthermore, in order to prevent workers from forgetting to check the elevator car, it is preferable to time the warning to the worker to coincide with the timing of unlocking the locking device with a key. However, in the technology described in Patent Document 1, a warning voice was emitted from a buzzer before the key was inserted into the keyhole and before the key made contact with the locking device, that is, before the actual unlocking operation with the key was performed. Therefore, if there was a delay between inserting the key into the keyhole and performing the unlocking operation with the key, the warning voice may have ended by the time the unlocking operation was actually performed with the key. As a result, in the technology described in Patent Document 1, there was a risk that workers would forget to check the elevator car.

[0007] Considering the above-mentioned problems, the object of the present invention is to provide an unlocking device that simplifies the structure and can alert the worker while the locking device is being unlocked using a key. [Means for solving the problem]

[0008] To solve the above problems and achieve the objective, an unlocking device reflecting one aspect of the present invention is an unlocking device for unlocking a locking device installed on an elevator landing door. The unlocking device comprises a rod-shaped key, a key guide, an action detection unit, a notification unit, and a control unit. The key pushes up the movable hook member of the locking device, thereby unlocking the locking device. The key guide supports the key so that it can move along its longitudinal direction. The action detection unit detects the operation of the key while the locking device is being unlocked by the key. The notification unit notifies the worker to be careful. Based on the detection signal from the action detection unit, the control unit causes the notification unit to notify the worker to be careful. [Effects of the Invention]

[0009] The unlocking device with the above configuration simplifies the structure and allows for a warning to be given to the worker while the key-operated locking device is being unlocked. Furthermore, issues, configurations, and effects other than those mentioned above will be clarified by the following description of the embodiments. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic diagram showing an elevator to which the unlocking device according to the first embodiment is applied. [Figure 2] This is a front view of the elevator landing door according to the first embodiment, as seen from inside the hoistway. [Figure 3] This is a schematic diagram showing an unlocking device according to the first embodiment. [Figure 4] This figure shows the unlocking operation using the unlocking device according to the first embodiment. [Figure 5] This figure shows the unlocking operation using the unlocking device according to the first embodiment. [Figure 6] This figure shows the unlocking operation using the unlocking device according to the first embodiment. [Figure 7] Figure 7A shows the base end of the unlocking key during the unlocking operation in the unlocking device according to the first embodiment, and Figure 7B shows the device before unlocking and during unlocking. [Figure 8] This figure shows the unlocking operation using the unlocking device according to the first embodiment. [Figure 9] This is a schematic diagram showing an unlocking device according to a second embodiment. [Figure 10] This is a schematic diagram showing the unlocking device according to the second embodiment in a folded state. [Figure 11] This is a schematic diagram showing the deployment operation of the unlocking device according to the second embodiment. [Figure 12] This is a schematic diagram showing the state after the deployment operation of the unlocking device according to the second embodiment has been completed. [Figure 13] This figure shows the unlocking operation in the unlocking device according to the second embodiment. [Figure 14] This is a schematic diagram showing an unlocking device according to a third embodiment. [Modes for carrying out the invention]

[0011] Hereinafter, an embodiment example of the unlocking device will be described with reference to FIGS. 1 to 14. In each figure, common members are denoted by the same reference numerals.

[0012] 1. First Embodiment Example 1-1. Configuration of Elevator First, the configuration of an elevator to which the unlocking device according to the first embodiment example (hereinafter referred to as "this example") is applied will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic configuration diagram showing an elevator.

[0013] As shown in FIG. 1, the elevator 100 has a car 120 that moves up and down in a hoistway 101 formed in a building structure. The elevator 100 includes a car 120 for carrying people and goods, a rope 130, a counterweight 140, a hoisting machine 150, a speed governor 160, and a control unit 170. The control unit 170 controls the driving of the hoisting machine 150 and the opening and closing operations of a car door provided on the car 120.

[0014] A car-side pulley 121 is provided at the lower part of the car 120 in the vertical direction. The rope 130 is wound around the car-side pulley 121. Also, a car-side door (not shown) is provided in front of the car 120. A landing door 103 is provided at a landing 102 where the car 120 stops in the building structure. When the car 120 stops at each floor, the car door provided on the car 120 faces the landing door 103. By opening the car door and the landing door 103, people and goods can get on and off the car 120.

[0015] In addition, a landing-side locking device 105 for locking the landing door 103 in an unlockable manner is provided at the upper part of the landing door 103 in the vertical direction. The detailed configuration of the landing-side locking device 105 will be described later.

[0016] Furthermore, an upper pulley 180 is provided at the top of the elevator shaft 101. A rope 130 is wound around the upper pulley 180. In addition, a counterweight 140 is provided with a counterweight pulley (not shown). A rope 130 is wound around the counterweight pulley.

[0017] The hoisting machine 150 is located within the elevator shaft 101. The hoisting machine 150 is equipped with a sheave around which the rope 130 is wound. When the hoisting machine 150 is driven, the elevator car 120 and the counterweight 140 move up and down within the elevator shaft 101.

[0018] A governor 160 is located at the bottom of the elevator shaft 101. The governor 160 has a governor rope (not shown). The governor rope is connected to the elevator car 120 and moves within the elevator shaft in accordance with the elevator car 120's upward and downward movement. The governor 160 then detects the speed of the elevator car 120 from the movement of the governor rope.

[0019] When performing maintenance and inspection work, the elevator car 120 is stopped at a designated floor. Then, worker M1 uses the unlocking device 10 (described later) to unlock the landing-side locking device 105 from the landing 102 side of the building structure. Once the landing-side locking device 105 is unlocked, worker M1 opens the landing door 103 and climbs onto the top of the elevator car 120 to perform the maintenance and inspection work.

[0020] [Locking device on the boarding area side] Next, the configuration of the landing-side locking device 105 will be described with reference to Figure 2. Figure 2 is a front view of the landing door 103 as seen from inside the elevator shaft. As shown in Figure 2, the elevator 100 in this example has a pair of landing doors 103a and 103b. The entrance to the landing 102 is opened and closed when the pair of landing doors 103a and 103b move closer to or further apart from each other. A landing-side locking device 105 is provided above the landing doors 103a and 103b.

[0021] The landing-side locking device 105 includes a fixed hook member 106, a movable hook member 107, and a pivot shaft 108. The fixed hook member 106 is fixed to a door unit (not shown) provided on the upper part of a pair of landing doors 103a and 103b. The pivot shaft 108 is provided on the upper part of one of the pair of landing doors 103a and 103b, namely the landing door 103b. The movable hook member 107 is rotatably supported on the pivot shaft 108. The pivot shaft 108 and the movable hook member 107 move together with the landing door 103b in the opening and closing direction of the landing doors 103a and 103b.

[0022] The movable hook member 107 protrudes from the pivot shaft 108 toward the closing direction of the landing door 103b. The end of the movable hook member 107 opposite to the end on the pivot shaft 108 side is provided with a movable engaging portion 107a that engages with the fixed engaging portion 106a of the fixed hook member 106. When the landing side locking device 105 is locked, that is, when the movable hook member 107 and the fixed hook member 106 are engaged, there is a gap of clearance T1 between the fixed engaging portion 106a and the movable engaging portion 107a.

[0023] Furthermore, the landing-side locking device 105 is provided with a biasing member (not shown) that biases the movable hook member 107 in a direction that engages with the fixed hook member 106. When performing maintenance and inspection work, the worker M1 uses the unlocking device 10 to push up the movable hook member 107, thereby releasing the engagement between the movable hook member 107 and the fixed hook member 106 and unlocking the landing-side locking device 105.

[0024] 1-2. Configuration of the unlocking device Next, the configuration of the unlocking device 10 will be described with reference to Figure 3. Figure 3 is a schematic diagram showing the unlocking device 10.

[0025] As shown in Figure 3, the unlocking device 10 includes a key 11, a housing 12, a key guide 13, a malfunction reduction unit 14, a control unit 15, an action detection unit 16, a detection switch 17, an audio generation unit 21 (showing an example of an alert unit), and a power supply 22. The housing 12 is formed in the shape of a hollow container. The control unit 15, the action detection unit 16, the audio generation unit 21, and the power supply 22 are housed inside the housing 12. In addition, a key guide 13 is provided at one end of the housing 12 to movably support the key 11.

[0026] The key 11 is formed from a long, rod-shaped member. The key 11 is supported by a key guide 13 so as to be movable along its longitudinal direction. The key guide 13 is located at the base end of the key 11, opposite to the tip end in the direction of movement. The key guide 13 is formed, for example, from a cylindrical member. The base end of the key 11 is movably inserted into the cylindrical hole of the key guide 13. Therefore, the key 11 protrudes from the key guide 13. Furthermore, a malfunction reduction unit 14 is located inside the cylindrical hole of the key guide 13.

[0027] The malfunction reduction unit 14 is located within the cylindrical hole of the key guide unit 13, with one end in contact with the base end of the key 11. The other end of the malfunction reduction unit 14 is in contact with either the key guide unit 13 or the housing unit 12. The malfunction reduction unit 14 biases the key 11 in a direction that causes it to protrude from the key guide unit 13. In other words, the malfunction reduction unit 14 biases the movable hook member 107 of the key 11 in an upward direction. The biasing force F3 of the malfunction reduction unit 14 is set to be smaller than the locking force F1 of the biasing member of the landing-side locking device 105 that biases the movable hook member 107 in the locking direction.

[0028] For example, a coil spring can be used as the malfunction reduction unit 14. However, the malfunction reduction unit 14 is not limited to a coil spring; any other elastic material such as a leaf spring or rubber may be used.

[0029] Furthermore, a detection switch 17 is provided at a position opposite the base end of the key 11. The detection switch 17 is supported by the operation detection unit 16 and protrudes from the housing 12 toward the key guide unit 13. The tip of the detection switch 17 in the protruding direction is housed in the key guide unit 13 and faces the base end of the key 11 with a gap between them. In addition, a switch-side contact 17a is provided on the opposite side of the tip of the detection switch 17. The switch-side contact 17a faces the detection-side contact 16a of the operation detection unit 16 with a gap between them. When the switch-side contact 17a and the detection-side contact 16a make contact, electrical conductivity is established and the operation detection unit 16 detects the operation of the key 11.

[0030] The motion detection unit 16 is connected to the control unit 15. The motion detection unit 16 outputs the detected signal to the control unit 15. The control unit 15 is connected to a power supply 22 and a sound generation unit 21. The power supply 22 supplies power to the motion detection unit 16, the control unit 15, and the sound generation unit 21. For example, a battery can be used as the power supply 22.

[0031] The control unit 15 controls the voice generation unit 21 based on the detection signal from the motion detection unit 16. The voice generation unit 21 has predetermined voices stored in it beforehand. Then, under the control of the control unit 15, the voice generation unit 21 generates the predetermined voice V1 (see Figure 6) that has been stored in it beforehand. For example, the predetermined voice generated by the voice generation unit 21 is a voice prompting worker M1 to check whether the elevator car 120 has stopped at a predetermined position. However, the voice V1 generated by the voice generation unit 21 is not limited to the example described above, and various other voices to warn others are also emitted.

[0032] Although an example using the voice generation unit 21 as the notification unit has been described, it is not limited to this, and any type of notification unit such as light, images, or other types can be used as long as it can notify the worker M1 of a warning.

[0033] 1-3. Unlocking operation and opening operation of landing doors Next, referring to Figures 4 to 8, the unlocking operation of the landing-side locking device 105 using the unlocking device 10 described above, and the opening operation of the landing door 103 will be explained. Figures 4 to 6 and 8 show the unlocking operation using the unlocking device 10. Figure 7 shows the base end of the key 11 during the unlocking operation of the unlocking device 10, with Figure 7A showing the state before unlocking and Figure 7B showing the state during unlocking.

[0034] First, worker M1 moves the landing doors 103a and 103b in the opening direction from the landing 102 side. At this time, as shown in Figure 4, the landing doors 103a and 103b can move by the amount of clearance T1 between the fixed-side engaging part 106a and the movable-side engaging part 107a. As a result, a gap S1 equivalent to the clearance T1 between the fixed-side engaging part 106a and the movable-side engaging part 107a is created between the pair of landing doors 103a and 103b. Here, the gap S1 is such that a person cannot enter the elevator shaft 101 from the landing 102.

[0035] Next, as shown in Figure 5, worker M1 inserts the key 11 of the unlocking device 10 into the elevator shaft 101 through the gap S1 created between the pair of landing doors 103a and 103b. Then, worker M1 presses the tip of the key 11 against the movable hook member 107 of the landing-side locking device 105 from below in the vertical direction. Next, worker M1 applies a load F2 to the unlocking device 10 against the locking force F1 of the landing-side locking device 105.

[0036] Then, when the load F2 applied to the unlocking device 10 becomes greater than the locking force F1 of the landing-side locking device 105, as shown in Figure 6, the movable hook member 107 rotates around the pivot axis 108 against the locking force F1 of the biasing member and is pushed upward in the vertical direction. As a result, the engagement between the fixed hook member 106 and the movable hook member 107 is released, and the landing-side locking device 105 is unlocked.

[0037] During the unlocking operation of the landing-side locking device 105, if the load F2 applied to the unlocking device 10 exceeds a predetermined force, a predetermined sound is emitted from the sound generating unit 21 of the unlocking device 10 to alert the worker M1. Here, as shown in Figure 7A, before unlocking, that is, before the key 11 contacts the movable hook member 107, the key 11 is biased in the direction of protrusion from the key guide part 13 by the biasing force F3 of the malfunction reduction unit 14. Therefore, the base end of the key 11 is not in contact with the detection switch 17. Consequently, the switch-side contact 17a of the detection switch 17 is facing the detection-side contact 16a of the operation detection unit 16 with a gap between them. This prevents the sound from being emitted from the sound generating unit 21 before the unlocking operation is performed using the unlocking device 10.

[0038] As described above, when the key 11 is pressed against the movable hook member 107 and the unlocking device 10 is pushed upward in the vertical direction, a locking force F1 is applied to the key 11 via the movable hook member 107. When the locking force F1 becomes greater than the biasing force F3, the key 11 moves towards the key guide 13 and the housing 12 by the key guide 13. As a result, the detection switch 17 is pressed by the base end of the key 11. Then, the switch-side contact 17a of the detection switch 17 and the detection-side contact 16a of the operation detection unit 16 come into contact, and the operation detection unit 16 becomes electrically connected.

[0039] By conducting electricity, the motion detection unit 16 detects the unlocking operation of the unlocking device 10 and outputs a detection signal to the control unit 15. When the control unit 15 receives the detection signal from the motion detection unit 16, it controls the sound generation unit 21 to generate a predetermined sound V1 as shown in Figure 6. As a result, the unlocking device 10 generates a sound V1 to alert the worker M1, so that the worker M1 can reliably check whether the elevator car 120 is stopped in the predetermined position through the gap S1 between the pair of landing doors 103a and 103b. As a result, it is possible to prevent the worker M1 from forgetting to check the elevator car 120, and thus prevent the worker M1 from falling into the elevator shaft 101.

[0040] Furthermore, in the unlocking device 10 of this example, the only movable component is the key 11, eliminating the need for any other movable components and simplifying the configuration of the unlocking device 10. Moreover, the movement of the key 11 itself, which pushes up the movable hook member 107, is directly detected by the motion detection unit 16, thereby detecting the unlocking operation by the key 11. As a result, the unlocking operation by the key 11 can be detected more reliably and quickly than when the unlocking operation of the key 11 is detected indirectly by other components.

[0041] Furthermore, the timing of the warning voice V1 is when the key 11 pushes up the movable hook member 107, that is, when the landing-side locking device 105 is being unlocked by the key 11. Thus, with the unlocking device 10 in this example, the timing of the warning voice V1 is made to coincide with the timing of unlocking the landing-side locking device 105 with the key 11. As a result, it is possible to reliably prevent the worker M1 from forgetting to check the elevator car 120.

[0042] Once the position of the elevator car 120 has been confirmed and the landing-side locking device 105 has been unlocked, worker M1 moves the pair of landing doors 103a and 103b in the door-opening direction to a position where worker M1 can pass through, as shown in Figure 8. Then, worker M1 climbs onto the top of the elevator car 120 and performs maintenance and inspection work. This completes the unlocking of the landing-side locking device 105 using the unlocking device 10 and the opening of the landing doors 103.

[0043] 2. Second Embodiment Example Next, with reference to Figures 9 to 13, a second embodiment of the unlocking device will be described. Figure 9 is a schematic diagram showing an unlocking device according to a second embodiment. Figure 10 is a schematic diagram showing the unlocking device in a folded state. Figures 11 and 12 show the unfolding operation of the unlocking device. And Figure 13 shows the unlocking operation of the unlocking device.

[0044] The difference between the unlocking device 40 according to this second embodiment and the unlocking device 10 according to the first embodiment is that the storage body is configured to be foldable. Therefore, the same reference numerals are used for parts common to the unlocking device 10 according to the first embodiment, and redundant explanations are omitted.

[0045] As shown in Figure 9, the unlocking device 40 includes a key 41, a first housing 42A, a second housing 42B, a key guide unit 43, a malfunction reduction unit 44, a control unit 45, an action detection unit 46, a detection switch 47, a sound generation unit 51, and a power supply 52. ​​The unlocking device 40 also includes a hinge 55, a usage detection unit 56, a usage detection switch 57, an assembly detection unit 58, and a light-emitting unit 59. Note that the configurations of the key 41, key guide unit 43, malfunction reduction unit 44, action detection unit 46, and detection switch 47 are the same as those of the unlocking device 10 according to the first embodiment, so their explanation is omitted.

[0046] Inside the first housing 42A are a control unit 45, a sound generation unit 51, a power supply 52, a usage detection unit 56, a usage detection switch 57, and an assembly detection unit 58. The usage detection switch 57 is located on the side of the first housing 42A in a direction perpendicular to the direction in which the key 41 moves. As shown in Figure 9, when the unlocking device 40 is in use, the contact of the usage detection switch 57 is in contact with the contact of the usage detection unit 56. When the contact of the usage detection unit 56 comes into contact with the contact of the usage detection switch 57, the usage detection unit 56 detects that the device has started to be used. The usage detection unit 56 outputs the detected signal to the control unit 45.

[0047] Furthermore, an assembly detection unit 58 is provided at one end of the first storage unit 42A in the direction in which the key 41 moves. The assembly detection unit 58 is in contact with a light-emitting unit 59, which will be described later, so as to be able to move away from it. When the assembly detection unit 58 detects contact with the light-emitting unit 59, it outputs a detection signal to the control unit 45.

[0048] A second storage unit 42B is rotatably connected via a hinge 55 to one end of the first storage unit 42A in the direction in which the key 41 moves. The second storage unit 42B is formed in the shape of a hollow container. The second storage unit 42B is provided with an action detection unit 46, a detection switch 47, and a light-emitting unit 59. The light-emitting unit 59 is exposed from one end of the second storage unit 42B opposite to the first storage unit 42A. The light-emitting unit 59 lights up or flashes under the control of the control unit 45. The light-emitting unit 59 illuminates the area in front of the direction in which the key 41 moves. This makes it easier to see the position of the movable hook member 107 of the landing-side locking device 105 against which the key 41 is pressed.

[0049] Furthermore, a key 41, a key guide 43, and a malfunction reduction unit 44 are arranged at one end of the second storage unit 42B opposite to the first storage unit 42A. The key 41 is movably supported by the key guide 43 provided at one end of the second storage unit 42B.

[0050] For example, when transporting the unlocking device 40, or before using the unlocking device 40, as shown in Figure 10, the second storage unit 42B rotates around the hinge 55 and contacts the side of the first storage unit 42A. As a result, the key 41's protruding direction is opposite to that of the usage state shown in Figure 9. This causes the unlocking device 40 to be folded, making the overall length of the unlocking device 40 shorter than in the usage state. In this way, the unlocking device 40 can be transported in a compact state, allowing it to be stored in the pocket of a worker M1 or the like.

[0051] Furthermore, as shown in Figure 10, when the unlocking device 40 is folded, the usage detection switch 57 is pressed against the malfunction reduction unit 44 and the second housing 42B. As a result, the contact of the usage detection switch 57 is separated from the contact of the usage detection unit 56. This allows the control unit 45 to determine that the unlocking device 40 is in the folded state.

[0052] Next, when starting to use the unlocking device 40, operator M1 rotates the second housing 42B around the hinge 55, as shown in Figure 11. This causes the malfunction reduction unit 44 and the second housing 42B to move away from the usage detection switch 57. As a result, the contact of the usage detection switch 57 makes contact with the contact of the usage detection unit 56, and the usage detection unit 56 becomes conductive. That is, the usage detection unit 56 detects the rotational state of the second housing 42B relative to the first housing 41A.

[0053] By conducting electricity, the usage detection unit 56 detects the start of use of the unlocking device 40 and outputs a detection signal to the control unit 45. When the control unit 45 receives the detection signal indicating the start of use from the usage detection unit 56, it controls the sound generation unit 51 to generate the start of use sound V2. This notifies the worker M1 of the start of use, thereby alerting the worker M1 in advance. As a result, the worker M1 can be prompted to check the position of the elevator car 120 even before the unlocking operation of the landing-side locking device 105 is performed.

[0054] Furthermore, when the second housing 42B is rotated, as shown in Figure 12, the second housing 42B comes into contact with one end of the first housing 42A. When the second housing 42B comes into contact with one end of the first housing 42A, the assembly detection unit 58 and the light-emitting unit 59 become electrically connected. As a result, the assembly detection unit 58 detects that the unlocking device 40 is assembled and outputs a detection signal to the control unit 45. When the control unit 45 receives the detection signal indicating assembly completion from the assembly detection unit 58, it lights up the light-emitting unit 59. As a result, the area in front of the key 41 in the direction of movement is illuminated by the light-emitting unit 59.

[0055] Next, when the key 41 is pressed against the movable hook member 107 to perform the unlocking operation of the landing-side locking device 105, the key 41 moves toward the second storage unit 42B and the first storage unit 42A, resisting the biasing force of the malfunction reduction unit 44. Then, the detection switch 47 is pressed by the key 41, and the operation detection unit 46 becomes conductive. The operation detection unit 46 detects the unlocking operation of the unlocking device 40 and outputs a detection signal to the control unit 45. When the control unit 45 receives the detection signal from the operation detection unit 46, it controls the voice generation unit 51 to generate a predetermined voice (warning voice) V1.

[0056] The other components are the same as those of the unlocking device 10 according to the first embodiment described above, so their description will be omitted. The unlocking device 40 according to this second embodiment can also be made to have the same operation and effect as the unlocking device 10 according to the first embodiment described above.

[0057] 3. Third Embodiment Example Next, with reference to Figure 14, a third embodiment of the unlocking device will be described. Figure 14 is a schematic diagram showing an unlocking device according to a third embodiment.

[0058] The unlocking device 40B according to this third embodiment is the unlocking device 40 according to the second embodiment with a storage compartment 72C added. Therefore, the same reference numerals are used for parts common to the unlocking device 10 according to the first embodiment and the unlocking device 40 according to the second embodiment, and redundant explanations are omitted.

[0059] As shown in Figure 14, the unlocking device 40B has a first storage unit 72A, a second storage unit 72B, and a storage compartment 72C. The other configurations are the same as those of the unlocking device 40 according to the second embodiment, so their description is omitted. The storage compartment 72C is provided on the side of the first storage unit 72A. The storage compartment 72C is formed as a hollow container with one side open.

[0060] Furthermore, the storage compartment 72C covers the usage detection switch 57 installed on the first storage unit 72A. This prevents worker M1 from coming into contact with the usage detection switch 57 when worker M1 grasps the first storage unit 72A after the assembly of the unlocking device 40B is complete. As a result, it is possible to prevent the usage detection unit 56 from falsely detecting the start of use while the unlocking operation of the landing-side locking device 105 is in operation using the unlocking device 40B.

[0061] Furthermore, when the second storage unit 72B is brought close to the side of the first storage unit 72A and the unlocking device 40B is folded, the second storage unit 72B, the key guide unit 43, and the key 41 are stored inside the storage compartment 72C. This prevents the key 41 from getting caught on the worker M1 or other components when transporting the unlocking device 40B, thus preventing injury to the worker M1 or damage to the unlocking device 40B or other components. As a result, the unlocking device 40B can be transported safely.

[0062] Furthermore, one side of the hangar 72C opposite to the side surface of the first storage unit 72A is open. When the second storage unit 72B rotates around the hinge 55, the second storage unit 72B and the key 41 are pulled out from the opening in the hangar 72C. As a result, the unlocking device 40B according to this third embodiment can also be unfolded to the assembled state shown in Figures 9 and 13 of the unlocking device 40 according to the second embodiment.

[0063] The other components are the same as those of the unlocking device 10 in the first embodiment and the unlocking device 40 in the second embodiment described above, so their description will be omitted. The unlocking device 40B in this third embodiment can also be made to have the same operation and effect as the unlocking device 10 in the first embodiment and the unlocking device 40 in the second embodiment described above.

[0064] Furthermore, the invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the gist of the invention as described in the claims.

[0065] The unlocking device described above can be applied not only to 1:1 roping and 2:1 roping elevators, which use a hoisting machine to raise and lower the elevator car, but also to hydraulic elevators and various other types of elevators.

[0066] In this specification, although terms such as "parallel" and "orthogonal" are used, these do not mean only strictly "parallel" and "orthogonal," but also include states such as "approximately parallel" and "approximately orthogonal," which are within the range in which they can perform their functions. [Explanation of symbols]

[0067] 10, 40, 40B... Unlocking device, 11, 41... Key, 12... Storage unit, 13, 43... Key guide unit, 14, 44... Malfunction reduction unit, 15, 45... Control unit, 16, 46... Motion detection unit, 16a... Detection side contact, 17, 47... Detection switch, 17a... Switch side contact, 21, 51... Sound generation unit (notification unit), 22, 52... Power supply, 42A... First storage unit, 42B... Second storage unit, 55... Hinge, 56... Usage detection unit, 57... Usage detection switch, 58... Assembly detection unit, 59... Light-emitting unit, 72A... First storage unit, 72B... Second storage unit, 72C... Storage compartment, 100... Elevator, 101... Hoistway, 102... Landing, 103, 103a, 103b... Landing door, 105... Landing side locking device, 106... Fixed hook member, 106a... Fixed side engaging part, 107... Movable hook member, 107a... Movable side engaging part, 108... Pivot shaft, 120... Car, 130... Rope, 140... Counterweight, 150... Hoisting machine, 160... Speed ​​governor, F1... Locking force, F2... Load, F3... Biasing force, M1... Operator, S1... Gap, T1... Allowance, V1... Voice, V2... Start of use voice

Claims

1. In an unlocking device for unlocking a locking device installed on an elevator landing door, A rod-shaped key that pushes up the movable hook member of the locking device to unlock the locking device, A key guide that supports the key so as to be movable along its longitudinal direction, An action detection unit that detects the operation of the key while the locking device is being unlocked by the key, The notification unit alerts workers to potential dangers, A control unit that causes the notification unit to alert the worker based on the detection signal from the motion detection unit, An unlocking device equipped with the following features.

2. A first housing housing the notification unit and the control unit, A second housing is rotatably connected to the first housing via a hinge, and is provided with the key and the key guide. An unlocking device according to claim 1, comprising:

3. The first housing is provided with a usage detection unit that detects the rotational state of the second housing relative to the first housing, The control unit, based on the detection signal from the usage detection unit, causes the notification unit to notify the worker that the use has begun. The unlocking device according to claim 2.

4. The first storage unit is provided with a compartment for storing the key, the key guide, and the second storage unit. The unlocking device according to claim 2.

5. The system further includes a malfunction reduction unit that biases the key in a direction that pushes the movable hook member upward from the key guide. The unlocking device according to claim 1 or 2.

6. The biasing force applied by the malfunction reduction unit to the key is set to be less than the locking force applied by the locking device to the movable hook member in the locking direction. The unlocking device according to claim 5.

7. The aforementioned key is further equipped with a light-emitting part that illuminates the area in front of the direction of movement. The unlocking device according to claim 1 or 2.

Images