Passenger conveyor and safety device

Abstract

The invention provides a passenger conveyor and a safety device. The passenger conveyor and the safety device can prevent equipment such as a detector from being damaged after displacement of a comb plate is detected by the detector. The support member (21) is supported by the truss (1) so as to be displaceable in the A direction with respect to the truss (1). The comb plate (10) is supported by the receiving member (21) so as to be displaceable in the A direction with respect to the receiving member (21). When the comb teeth (10c) are stressed in the A direction, the delay device (24) delays the displacement of the comb plate (10) than the displacement of the receiving member (21) such that the displacement of the receiving member (21) in the A direction with respect to the truss (1) starts or continues the displacement of the comb plate (10) in the A direction with respect to the receiving member (21) after the displacement of the receiving member (21) in the A direction with respect to the truss (1) is restricted by the restriction device (23).

Description

Technical Field

[0001] The present disclosure relates to passenger conveyors and safety devices for use in passenger conveyors. Background Art

[0002] Patent document 1 describes a passenger conveyor. In the passenger conveyor described in patent document 1, a comb plate is provided at an entrance and an exit. The comb plate is guided by a guide member to move horizontally. When the comb plate moves a certain distance in the horizontal direction, a detection switch is turned on. When the detection switch is turned on, the steps stop.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: International Publication No. 2019 / 220634 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In the passenger conveyor described in Patent Document 1, when the detection switch is turned on, the steps stop. However, it takes a certain amount of time from the time the detection switch is turned on until the steps stop completely. During this period, if the comb plate moves further in the horizontal direction, excessive load will be applied to the detection switch and other equipment, which may be damaged.

[0008] The present disclosure is made to solve the above-mentioned problems. The present disclosure aims to provide a passenger conveyor that can prevent damage to the detector and other equipment after the displacement of the comb plate is detected by the detector. Another purpose of the present disclosure is to provide a safety device used in such a passenger conveyor.

[0009] Means for solving problems

[0010] The passenger conveyor disclosed in the present invention comprises: a floor; a step that moves in a first direction and enters under the floor; a truss that supports the moving step; a receiving member that is supported on the truss in a manner that allows it to be displaced in the first direction relative to the truss; a comb plate that has comb teeth opposite to the tread of the step, and the comb plate is supported on the receiving member in a manner that allows it to be displaced in the first direction relative to the receiving member; a detector that detects whether the distance that the receiving member is displaced in the first direction relative to the truss reaches a first distance; a limiting device that limits the distance that the receiving member can be displaced in the first direction relative to the truss to a second distance that is longer than the first distance; and a delay device that delays the displacement of the comb plate compared to the displacement of the receiving member when the comb teeth are subjected to a force in the first direction, so that after the displacement of the receiving member in the first direction relative to the truss is limited by the limiting device, the displacement of the comb plate relative to the receiving member in the first direction begins or continues.

[0011] The passenger conveyor disclosed in the present invention comprises: a floor; a step that moves in a first direction and enters under the floor; a truss that supports the moving step; a receiving member that is supported on the truss in a manner that allows it to shift in the first direction relative to the truss; a comb plate that has comb teeth opposite to the tread of the step, and the comb plate is supported on the receiving member in a manner that allows it to shift in the first direction relative to the receiving member; a detector that detects whether the distance the comb plate has been displaced in the first direction relative to the receiving member has reached a first distance; a limiting device that limits the distance the comb plate can be displaced in the first direction relative to the receiving member to a second distance that is longer than the first distance; and a delay device that delays the displacement of the receiving member compared to the displacement of the comb plate when the comb teeth are subjected to a force in the first direction, so that after the displacement of the comb plate relative to the receiving member in the first direction is limited by the limiting device, the displacement of the receiving member in the first direction relative to the truss begins or continues.

[0012] The safety device disclosed in the present invention is a safety device for a passenger conveyor, which includes: a floor; a step that moves in a first direction and enters under the floor; and a truss that supports the moving step. The safety device includes: a receiving member that is supported on the truss in a manner that can be displaced in the first direction relative to the truss; a comb plate that has comb teeth that are opposite to the tread of the step, and the comb plate is supported on the receiving member in a manner that can be displaced in the first direction relative to the receiving member; a detector that detects whether the distance that the receiving member is displaced in the first direction relative to the truss reaches a first distance; a limiting device that limits the distance that the receiving member can be displaced in the first direction relative to the truss to a second distance that is longer than the first distance; and a delay device that delays the displacement of the comb plate relative to the displacement of the receiving member when the comb teeth are subjected to a force in the first direction, so that after the displacement of the receiving member relative to the truss in the first direction is limited by the limiting device, the displacement of the comb plate relative to the receiving member in the first direction is started or continued.

[0013] The safety device disclosed in the present invention is a safety device for a passenger conveyor, which includes: a floor; a step that moves in a first direction and enters under the floor; and a truss that supports the moving step. The safety device includes: a receiving member that is supported on the truss in a manner that can be displaced in the first direction relative to the truss; a comb plate that has comb teeth facing the tread of the step, and the comb plate is supported on the receiving member in a manner that can be displaced in the first direction relative to the receiving member; a detector that detects whether the distance that the comb plate is displaced in the first direction relative to the receiving member reaches a first distance; a limiting device that limits the distance that the comb plate can be displaced in the first direction relative to the receiving member to a second distance that is longer than the first distance; and a delay device that delays the displacement of the receiving member relative to the comb plate when the comb teeth are subjected to a force in the first direction, so that after the displacement of the comb plate relative to the receiving member in the first direction is limited by the limiting device, the displacement of the receiving member relative to the truss in the first direction starts or continues.

[0014] Effects of the Invention

[0015] According to the present disclosure, in the passenger conveyor, it is possible to prevent equipment such as the detector from being damaged after the displacement of the comb plate is detected by the detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram showing an example of the passenger conveyor in the first embodiment.

[0017] Figure 2 This is a picture of the exit viewed from above.

[0018] Figure 3 It is a diagram schematically showing an example of a safety device.

[0019] Figure 4 It is a diagram schematically showing an example of a safety device.

[0020] Figure 5 This is a diagram for explaining an operation example of the safety device.

[0021] Figure 6 This is a diagram for explaining an operation example of the safety device.

[0022] Figure 7 This is a diagram for explaining an operation example of the safety device.

[0023] Figure 8 This is a diagram for explaining an operation example of the safety device.

[0024] Fig. 9 It is a diagram schematically showing another example of the safety device.

[0025] Fig.10This is a diagram for explaining an operation example of the safety device.

[0026] Fig.11 This is a diagram for explaining an operation example of the safety device.

[0027] Fig.12 This is a diagram for explaining an operation example of the safety device.

[0028] Fig.13 It is a diagram schematically showing another example of the safety device.

[0029] Fig.14 This is a diagram for explaining an operation example of the safety device.

[0030] Fig.15 This is a diagram for explaining an operation example of the safety device.

[0031] Fig.16 It is a diagram schematically showing another example of the safety device.

[0032] Fig.17 This is a diagram for explaining an operation example of the safety device.

[0033] Fig.18 This is a diagram for explaining an operation example of the safety device.

[0034] Description of symbols

[0035] 1: Truss, 1a~1b: Supporting parts, 2: Steps, 3: Entrance, 4: Exit, 5: Machine room, 6: Floor, 7: Comb plate, 8: Machine room, 9: Floor, 10: Comb plate, 10a~10b: End, 10-1a: Surface, 10c: Comb teeth, 11: Motor, 12: Control device, 13: Speed ​​reducer, 14: Shaft, 15: Sprocket, 16: Step chain, 17: Step shaft, 18: Skirt, 21: Bearing parts, 21-1~21-2: Bearing parts, 21-1a~21-2a: Tilt Inclined surface, 21-1b~21-2b: surface, 22: detector, 22-1~22-2: detector, 23: limiting device, 23-1~23-2: limiting device, 23-1a~23-1b: bolt, 23-1c: limiting component, 23-1d: bolt, 23-2a~23-2b: bolt, 24: delay device, 25: spring, 25-1~25-2: spring, 26: spring, 26-1~26-2: spring, 27: delay component, 27-1~27-2: delay component. DETAILED DESCRIPTION

[0036] The following is a detailed description with reference to the accompanying drawings. The repeated description is appropriately simplified or omitted. In each figure, the same reference numeral represents the same part or a corresponding part.

[0037] Implementation method 1.

[0038] Figure 1 This is a diagram showing an example of the passenger conveyor in the first embodiment. Figure 1 An escalator is shown as an example of a passenger conveyor. Detailed description of other examples of passenger conveyors such as moving walkways is omitted.

[0039] Figure 1 The passenger conveyor shown in the figure includes a truss 1 and steps 2. The truss 1 is a structure installed between upper and lower floors of a building and is fixed to the building. Equipment included in the passenger conveyor is supported by the truss 1. For example, the moving steps 2 are also supported by the truss 1. Passengers ride on the steps 2 to move from an entrance 3 to an exit 4. Figure 1 Indicates an escalator going up. Figure 2 This is a diagram showing the outlet 4 as viewed from above.

[0040] Figure 1 The passenger conveyor shown can also be a descending escalator. In this case, the entrance and exit above shown in the number 4 is an entrance, and the entrance and exit below shown in the number 3 is an exit.

[0041] A machine room 5 is provided below the entrance 3. The machine room 5 is a space formed inside the truss 1. The machine room 5 is closed by a floor 6. In addition, a comb plate 7 is provided at the entrance 3. The comb plate 7 is arranged on the exit 4 side of the floor 6 so as to be adjacent to the floor 6. The floor 6 and the comb plate 7 form the floor of the entrance 3.

[0042] A machine room 8 is provided below the exit 4. The machine room 8 is a space formed inside the truss 1. The machine room 8 is closed by the floor 9. In addition, a comb plate 10 is provided at the exit 4. The comb plate 10 is arranged on the entrance 3 side of the floor 9 so as to be adjacent to the floor 9. The floor 9 and the comb plate 10 form the floor of the exit 4.

[0043] The machine room 8 is provided with a motor 11 and a control device 12. The motor 11 drives the step 2. The control device 12 controls the motor 11. As an example, the motor 11 rotates a shaft 14 provided in the machine room 8 via a speed reducer 13. A sprocket 15 is provided on the shaft 14. A step chain 16 is wound around the sprocket 15. A plurality of step shafts 17 are provided on the step chain 16. A step 2 is fixed to each step shaft 17. Thus, a plurality of steps 2 are connected to the step chain 16.

[0044] The step 2 is moved by being pulled by the step chain 16. Figure 1 In the example shown, the steps 2 emerge from below the floor 6 and the comb plates 7 at the entrance 3 and move toward the exit 4. Skirts 18 are provided on both sides of the steps 2 moving from the entrance 3 toward the exit 4. The steps 2 emerging from below the comb plates 7 move along the skirt plates 18 between them.

[0045] Figure 2 The arrow A shown indicates the direction in which the step 2 moves at the exit 4. Hereinafter, the direction in which the step 2 moves at the exit 4 is also referred to as the A direction. The step 2 moves in the A direction at the exit 4 and enters under the comb plate 10 and the floor 9. The step 2 reverses in the machine room 8. The step 2 moves in the truss 1 toward the machine room 5 in the reversed state. The step 2 returns to a normal posture by further reversing in the machine room 5, and appears again from under the floor 6 and the comb plate 7.

[0046] Next, the safety device used in the passenger conveyor will be described. The safety device is provided at the entrance 3 and the exit 4, respectively. Figure 3 and Figure 4 It is a diagram schematically showing an example of a safety device. Figure 3 This corresponds to a view of the outlet 4 viewed from above. Figure 3 In the figure, the description of the skirt board 18 and the like is omitted. Figure 4 Yes means Figure 3 Hereinafter, the safety device provided at the outlet 4 will be described in detail. The detailed description of the safety device provided at the inlet 3 will be omitted.

[0047] The comb plate 10 is a part of the safety device. The safety device includes a receiving member 21 , a detector 22 , a limiting device 23 , and a delay device 24 in addition to the comb plate 10 .

[0048] exist Figure 3 and Figure 4 In the example shown, a part of the truss 1 is arranged on both sides of the moving step 2. For example, the step 2 moves in the space formed between the support member 1a and the support member 1b of the truss 1. The support member 1a and the support member 1b are respectively long members arranged along the A direction.

[0049] The receiving member 21 is supported by the truss 1 so as to be displaceable in the direction A relative to the truss 1. In the example shown in the present embodiment, the receiving member 21 includes a receiving member 21-1 and a receiving member 21-2.

[0050] The bearing member 21-1 is supported by the supporting member 1a. The bearing member 21-1 can be displaced in the direction A relative to the supporting member 1a. For example, the bearing member 21-1 is placed on the upper surface of the supporting member 1a. The upper surface of the supporting member 1a is horizontal. The bearing member 21-1 can slide along the upper surface of the supporting member 1a. The bearing member 21-2 is supported by the supporting member 1b. The bearing member 21-2 can be displaced in the direction A relative to the supporting member 1b. For example, the bearing member 21-2 is placed on the upper surface of the supporting member 1b. The upper surface of the supporting member 1b is horizontal. The bearing member 21-2 can slide along the upper surface of the supporting member 1b.

[0051] The comb plate 10 is supported by the receiving member 21 so as to be displaceable in the A direction relative to the receiving member 21. In the example shown in the present embodiment, the comb plate 10 is bridged between the receiving member 21-1 and the receiving member 21-2.

[0052] One end 10a of the comb plate 10 is supported by the receiving member 21-1. The end 10a can be displaced in the A direction relative to the receiving member 21-1. The end 10a is an end adjacent to the supporting member 1a. For example, the end 10a is placed on the upward inclined surface 21-1a of the receiving member 21-1. The inclined surface 21-1a is slightly inclined in a manner that becomes higher as it moves toward the A direction. The end 10a of the comb plate 10 can slide along the inclined surface 21-1a.

[0053] The other end 10b of the comb plate 10 is supported by the receiving member 21-2. The end 10b can be displaced in the A direction relative to the receiving member 21-2. The end 10b is an end adjacent to the supporting member 1b. For example, the end 10b is placed on the upward inclined surface 21-2a of the receiving member 21-2. The inclined surface 21-2a is slightly inclined in a manner that becomes higher as it moves toward the A direction. The end 10b of the comb plate 10 can slide along the inclined surface 21-2a.

[0054] The comb plate 10 has comb teeth 10c. The comb teeth 10c face the tread of the step 2 when the step 2 passes thereunder. For example, the comb teeth 10c are arranged so that the front ends thereof mesh with anti-slip strips formed on the tread of the step 2.

[0055] The detector 22 detects whether the distance of displacement of the receiving member 21 relative to the truss 1 in the direction A reaches a first distance. The first distance is set in advance. In the example shown in this embodiment, the detector 22 includes a detector 22-1 and a detector 22-2.

[0056] The detector 22-1 detects whether the distance that the bearing member 21-1 is displaced relative to the supporting member 1a in the A direction reaches a first distance. For example, the detector 22-1 is a mechanical switch. The detector 22-1 is fixed to the supporting member 1a via a mounting member. The detector 22-1 is configured such that its action piece is opposite to the surface 21-1b of the bearing member 21-1 at a position away from the surface 21-1b of the bearing member 21-1 in the A direction by a first distance. The surface 21-1b is a surface facing the A direction.

[0057] When the receiving member 21-1 is displaced by the first distance in the A direction relative to the truss 1, the surface 21-1b contacts the operating piece of the detector 22-1. Thus, the detector 22-1 performs detection, and a detection signal is sent from the detector 22-1 to the control device 12.

[0058] The detector 22-2 detects whether the distance of displacement of the bearing member 21-2 relative to the supporting member 1b in the A direction reaches a first distance. For example, the detector 22-2 is a mechanical switch. The detector 22-2 is fixed to the supporting member 1b via a mounting member. The detector 22-2 is configured such that its action piece is opposite to the surface 21-2b of the bearing member 21-2 at a position away from the surface 21-2b of the bearing member 21-2 in the A direction by a first distance. The surface 21-2b is a surface facing the A direction.

[0059] When the receiving member 21-2 is displaced by the first distance in the A direction relative to the truss 1, the surface 21-2b contacts the operating piece of the detector 22-2. Thus, the detector 22-2 performs detection, and a detection signal is sent from the detector 22-2 to the control device 12.

[0060] The limiting device 23 limits the distance that the receiving member 21 can be displaced in the A direction relative to the truss 1 to a second distance. The second distance is longer than the first distance and is preset. In the example shown in this embodiment, the limiting device 23 includes a limiting device 23-1 and a limiting device 23-2.

[0061] The limiting device 23-1 limits the distance that the receiving member 21-1 can be displaced in the A direction relative to the supporting member 1a to a second distance. For example, the limiting device 23-1 includes a bolt 23-1a fixed to the supporting member 1a and a bolt 23-1b fixed to the receiving member 21-1. The bolt 23-1a and the bolt 23-1b are arranged on a straight line in a manner such that each axis is along the A direction. In addition, the bolt 23-1a is arranged so that its head is opposite to the head of the bolt 23-1b at a position away from the head of the bolt 23-1b in the A direction by the second distance.

[0062] When the receiving member 21-1 is displaced by the second distance in the A direction relative to the truss 1, the head of the bolt 23-1b contacts the head of the bolt 23-1a. Thus, the displacement of the receiving member 21-1 in the A direction relative to the truss 1 is restricted by the restriction device 23-1. That is, when the bolt 23-1b contacts the bolt 23-1a, the receiving member 21-1 cannot be further displaced in the A direction.

[0063] The limiting device 23-2 limits the distance that the receiving member 21-2 can be displaced in the A direction relative to the supporting member 1b to a second distance. For example, the limiting device 23-2 includes a bolt 23-2a fixed to the supporting member 1b and a bolt 23-2b fixed to the receiving member 21-2. The bolt 23-2a and the bolt 23-2b are arranged on a straight line in a manner such that each axis is along the A direction. In addition, the bolt 23-2a is arranged so that its head is opposite to the head of the bolt 23-2b at a position away from the head of the bolt 23-2b in the A direction by the second distance.

[0064] When the receiving member 21-2 is displaced by the second distance in the A direction relative to the truss 1, the head of the bolt 23-2b contacts the head of the bolt 23-2a. Thus, the displacement of the receiving member 21-2 in the A direction relative to the truss 1 is restricted by the restriction device 23-2. That is, when the bolt 23-2b contacts the bolt 23-2a, the receiving member 21-2 cannot be further displaced in the A direction.

[0065] The delay device 24 is a device for delaying the displacement of the comb plate 10 relative to the receiving member 21 in the A direction relative to the truss 1 in comparison with the displacement of the receiving member 21 relative to the A direction. The delay device 24 delays the displacement of the comb plate 10 when the comb teeth 10c are subjected to a force in the A direction, so that even after the displacement of the receiving member 21 relative to the truss 1 in the A direction is limited by the limiting device 23, the displacement of the comb plate 10 relative to the receiving member 21 in the A direction continues.

[0066] exist Figure 3 and Figure 4 In the example shown, the delay device 24 includes a spring 25 and a spring 26. The spring 25 generates resistance when the receiving member 21 is displaced in the direction A relative to the truss 1. The spring 26 generates resistance when the comb plate 10 is displaced in the direction A relative to the receiving member 21. The spring constant of the spring 26 is greater than the spring constant of the spring 25.

[0067] In the example shown in this embodiment, the spring 25 includes a spring 25-1 and a spring 25-2. The spring 25-1 generates resistance when the receiving member 21-1 is displaced in the A direction relative to the supporting member 1a. For example, the spring 25-1 is arranged between the surface of the receiving member 21-1 facing the A direction and the surface of the supporting member 1a facing the C direction. The C direction is the opposite direction to the A direction. That is, the supporting member 1a is always pressed in the A direction by the spring 25-1, and the receiving member 21-1 is always pressed in the C direction by the spring 25-1.

[0068] If no external force acts on the safety device, the receiving member 21 - 1 is held on the supporting member 1 a so that the distance between the surface 21 - 1 b and the detector 22 - 1 becomes the first distance and the distance between the bolt 23 - 1 b and the bolt 23 - 1 a becomes the second distance.

[0069] The spring 25-2 generates resistance when the receiving member 21-2 is displaced relative to the supporting member 1b in the direction A. For example, the spring 25-2 is disposed between the surface of the receiving member 21-2 facing the direction A and the surface of the supporting member 1b facing the direction C. That is, the supporting member 1b is always pressed in the direction A by the spring 25-2, and the receiving member 21-2 is always pressed in the direction C by the spring 25-2.

[0070] If no external force acts on the safety device, the receiving member 21 - 2 is held on the supporting member 1 b so that the distance between the surface 21 - 2 b and the detector 22 - 2 becomes the first distance and the distance between the bolt 23 - 2 b and the bolt 23 - 2 a becomes the second distance.

[0071] In the example shown in the present embodiment, the spring 26 includes a spring 26-1 and a spring 26-2. The spring 26-1 generates resistance when the comb plate 10 is displaced in the direction A relative to the receiving member 21-1. For example, the spring 26-1 is disposed between the surface of the end 10a of the comb plate 10 facing the direction A and the surface of the receiving member 21-1 facing the direction C. That is, the receiving member 21-1 is always pressed in the direction A by the spring 26-1, and the comb plate 10 is always pressed in the direction C by the spring 26-1.

[0072] The spring 26-2 generates resistance when the comb plate 10 is displaced in the direction A relative to the receiving member 21-2. For example, the spring 26-2 is disposed between the surface of the end 10b of the comb plate 10 facing the direction A and the surface of the receiving member 21-2 facing the direction C. That is, the receiving member 21-2 is always pressed in the direction A by the spring 26-2, and the comb plate 10 is always pressed in the direction C by the spring 26-2.

[0073] If no external force acts on the safety device, the comb plate 10 is held at a position closest to the inlet 3 within the displaceable range.

[0074] Next, refer to Figures 5 to 8 , the operation of the comb teeth 10c when a force is applied in the A direction will be described. Figures 5 to 8 This is a diagram for explaining an operation example of the safety device. Figures 5 to 8 is equivalent to Figure 3 The BB section is shown.

[0075] Figure 5 The foreign matter D fixed to the tread of the step 2 is in contact with the tip of the comb teeth 10c. The foreign matter D moves in the direction A together with the step 2. Therefore, if the foreign matter D comes into contact with the tip of the comb teeth 10c, the comb teeth 10c are pressed in the direction A by the foreign matter D.

[0076] When the comb teeth 10c are pressed in the A direction, the receiving member 21 is displaced in the A direction relative to the truss 1, and the comb plate 10 is displaced in the A direction relative to the receiving member 21. As described above, the spring constant of the spring 26 is greater than the spring constant of the spring 25. That is, the load (= rebound force F2) required to compress the spring 26 from a state where no external force acts on the safety device is greater than the load (= rebound force F1) required to compress the spring 25. Therefore, when the comb teeth 10c are pressed in the A direction, the displacement amount of the receiving member 21 in the A direction relative to the truss 1 is greater than the displacement amount of the comb plate 10 in the A direction relative to the receiving member 21.

[0077] When the receiving member 21 is displaced by the first distance in the A direction relative to the truss 1 , the displacement of the receiving member 21 is detected by the detector 22 . As a result, a detection signal is transmitted from the detector 22 to the control device 12 . Figure 6 Indicates the state when a detection signal is sent from the detector 22.

[0078] When the control device 12 receives the detection signal from the detector 22, it starts the action for stopping the step 2. However, it takes a certain amount of time from the detection by the detector 22 until the step 2 stops completely. Moreover, during this period, the step 2 also moves in the direction A. Therefore, after the detection by the detector 22, the comb teeth 10c are also pressed in the direction A by the foreign matter D.

[0079] When the receiving member 21 is displaced in the A direction relative to the truss 1 by the second distance, the displacement of the receiving member 21 in the A direction relative to the truss 1 is restricted by the restriction device 23. That is, the receiving member 21-1 cannot be further displaced in the A direction due to the contact between the bolt 23-1b and the bolt 23-1a. The receiving member 21-2 cannot be further displaced in the A direction due to the contact between the bolt 23-2b and the bolt 23-2a. Hereinafter, the state in which the displacement of the receiving member 21 in the A direction relative to the truss 1 is restricted by the restriction device 23 is also referred to as the first restricted state. Figure 7 Indicates the state immediately after entering the first restriction state.

[0080] After the detection by the detector 22, before an excessive load is applied to the detector 22, it is necessary to limit the displacement of the receiving member 21 in the A direction relative to the truss 1 by the limiting device 23. The second distance is appropriately set to a distance that can prevent damage to the detector 22 based on the first distance and the specifications of the detector 22. As an example, the second distance is set to 10 mm.

[0081] Even in a state where the displacement of the receiving member 21 in the direction A relative to the truss 1 is restricted by the restriction device 23, the comb plate 10 can be displaced in the direction A relative to the receiving member 21. In addition, even after the displacement of the receiving member 21 in the direction A relative to the truss 1 is restricted by the restriction device 23, the comb plate 10 is pressed in the direction A by the foreign matter D. Therefore, after the displacement of the receiving member 21 in the direction A is restricted by the restriction device 23, the comb plate 10 is displaced in the direction A relative to the receiving member 21 by further compressing the spring 26. More specifically, the comb plate 10 is displaced in the direction A along the inclined surface 21-1a and the inclined surface 21-2a.

[0082] Figure 8 Indicates the state of step 2 stopping. Figure 8 In the state shown, the position of the bearing member 21 relative to the truss 1 is Figure 7 The position of the comb plate 10 relative to the receiving member 21 is the same as that shown in FIG. Figure 7 The position shown is offset in the direction of A. Figure 8 In the state shown, the floor 9 is pressed by the comb plate 10 and deviates upward and in the direction A. Figure 8 The offset shown is presumed to be installed on truss 1.

[0083] Thus, in the present safety device, when the comb teeth 10c are pressed in the A direction, first, the main receiving member 21 is displaced in the A direction relative to the truss 1. As a result, detection is performed by the detector 22, and the action for stopping the step 2 is started. Thereafter, the displacement of the receiving member 21 is restricted by the restriction device 23, thereby preventing damage to the detector 22. And, after the restriction by the restriction device 23 is performed, the comb tooth plate 10 is displaced in the A direction relative to the receiving member 21.

[0084] Thus, in this safety device, by pressing the comb teeth 10c in the direction of A, two stages of displacement are performed, namely, displacement for detection based on the detector 22 and displacement for preventing damage to the detector 22 and other equipment. For example, in an escalator with a rated speed of 30 m / min, the distance moved by the step 2 after detection based on the detector 22 may be about 0.1 m to 0.6 m. In the case of this safety device, the function of the two-stage displacement can prevent damage to the detector 22 and other equipment after the displacement of the comb tooth plate 10 is detected by the detector 22. In addition, protection against foreign matter D is also effective.

[0085] In this embodiment, a preferred example in which the receiving member 21, the detector 22, the limiting device 23, and the delay device 24 are provided on both sides of the comb plate 10 is described. This is an example. The receiving member 21, the detector 22, the limiting device 23, and the delay device 24 may be provided only on one side of the comb plate 10. The receiving member 21, the detector 22, the limiting device 23, and the delay device 24 may be provided only in the center of the comb plate 10.

[0086] In the present embodiment, a preferred example of achieving "rebound force F2>rebound force F1" by making the spring constant of the spring 26 greater than the spring constant of the spring 25 is described. This is an example. If possible, "rebound force F2>rebound force F1" can also be achieved by other methods. For example, "rebound force F2>rebound force F1" can also be achieved by making the initial compression amount of the spring 26 greater than the initial compression amount of the spring 25.

[0087] In the present embodiment, the example in which the foreign matter D fixed to the tread of the step 2 presses the comb teeth 10c in the direction A is described. In addition, when the step 2 floats, the comb teeth 10c may be pressed in the direction A by the floating step 2.

[0088] Next, another example in which the safety device can be adopted will be described. In the example shown below, only the points different from the above example will be described in detail.

[0089] Fig. 9 It is a diagram schematically showing another example of the safety device. Fig. 9 It is equivalent to Figure 3 The cross section of the BB cross section. Fig. 9 In the example shown, the safety device also includes the comb plate 10, the receiving member 21, the detector 22, the limiting device 23, and the delay device 24. The comb plate 10 and the receiving member 21 are the same as those in the above-mentioned example.

[0090] exist Fig. 9In the example shown, the detector 22 detects whether the distance by which the comb plate 10 is displaced in the direction A relative to the receiving member 21 reaches a first distance.

[0091] For example, the detector 22-1 detects whether the end 10a of the comb plate 10 is displaced in the direction A relative to the receiving member 21-1 by a first distance. The detector 22-1 is fixed to the receiving member 21-1. The detector 22-1 is configured such that its action piece is opposite to the surface 10-1a at a position away from the surface 10-1a of the comb plate 10 in the direction A by a first distance. For example, the end 10a of the comb plate 10 includes a protrusion extending upward. The surface 10-1a is the surface of the protrusion facing the direction A.

[0092] The detector 22-2 (not shown) detects whether the end 10b of the comb plate 10 has been displaced relative to the receiving member 21-2 by a first distance in the direction A. The detector 22-2 is fixed to the receiving member 21-2 in the same manner as the detector 22-1 is fixed to the receiving member 21-1.

[0093] exist Fig. 9 In the example shown, the limiting device 23 limits the distance by which the comb plate 10 can be displaced in the A direction relative to the receiving member 21 to a second distance. The second distance is longer than the first distance and is set in advance.

[0094] For example, the limiting device 23-1 limits the distance that the end 10a of the comb plate 10 can be displaced in the A direction relative to the receiving member 21-1 to the second distance. Fig. 9 In the example shown, the limiting device 23-1 includes a limiting member 23-1c fixed to the receiving member 21-1 and a bolt 23-1d fixed to the end 10a of the comb plate 10. The limiting member 23-1c is arranged so that the surface facing the C direction faces the head of the bolt 23-1d at a position away from the head of the bolt 23-1d in the A direction by a second distance.

[0095] When the end 10a of the comb plate 10 is displaced by the second distance in the A direction relative to the receiving member 21-1, the head of the bolt 23-1d contacts the limiting member 23-1c. Thus, the displacement of the comb plate 10 relative to the receiving member 21-1 in the A direction is limited by the limiting device 23-1. That is, when the bolt 23-1d contacts the limiting member 23-1c, the end 10a of the comb plate 10 cannot be further displaced in the A direction.

[0096] The limiting device 23-2 (not shown) limits the distance that the end 10b of the comb plate 10 can be displaced in the A direction relative to the receiving member 21-2 to a second distance. The limiting device 23-2 has the same structure as the limiting device 23-1. For example, the limiting device 23-2 includes a limiting member corresponding to the limiting member 23-1c and a bolt corresponding to the bolt 23-1d. The limiting member is fixed to the receiving member 21-2. The bolt is fixed to the end 10b of the comb plate 10.

[0097] exist Fig. 9 In the example shown, the delay device 24 is a device for delaying the displacement of the receiving member 21 in the A direction relative to the truss 1 compared to the displacement of the comb plate 10 in the A direction relative to the receiving member 21. The delay device 24 delays the displacement of the receiving member 21 when the comb teeth 10c are subjected to a force in the A direction, so that the displacement of the receiving member 21 in the A direction relative to the truss 1 continues even after the displacement of the comb plate 10 in the A direction relative to the receiving member 21 is restricted by the restriction device 23.

[0098] exist Fig. 9 In the example shown, the delay device 24 includes a spring 25 and a spring 26. The spring 25 generates resistance when the receiving member 21 is displaced in the direction A relative to the truss 1. The spring 26 generates resistance when the comb plate 10 is displaced in the direction A relative to the receiving member 21. The spring constant of the spring 25 is larger than the spring constant of the spring 26.

[0099] exist Fig. 9 In the example shown, similarly to the above-described example, the spring 25 includes a spring 25-1 and a spring 25-2 (not shown). In addition, the spring 26 includes a spring 26-1 and a spring 26-2 (not shown).

[0100] Next, refer to Figures 10 to 12 , yes Fig. 9 In the example shown, the operation when the comb teeth 10 c are subjected to force in the A direction will be described. Figures 10 to 12 This is a diagram for explaining an operation example of the safety device. Figures 10 to 12 It is equivalent to Figure 3 A cross section of section BB is shown.

[0101] If the foreign matter D contacts the front end of the comb teeth 10c, the comb teeth 10c are then pressed in the direction A by the foreign matter D. Fig. 9In the example shown, the spring constant of the spring 25 is larger than the spring constant of the spring 26. That is, the load (= rebound force F1) required to compress the spring 25 from a state where no external force acts on the safety device is larger than the load (= rebound force F2) required to compress the spring 26. Therefore, when the comb teeth 10c are pressed in the A direction, the displacement amount of the comb tooth plate 10 relative to the receiving member 21 in the A direction is larger than the displacement amount of the receiving member 21 relative to the truss 1 in the A direction.

[0102] When the comb plate 10 is displaced by the first distance in the A direction relative to the receiving member 21 , the displacement of the comb plate 10 is detected by the detector 22 . As a result, a detection signal is transmitted from the detector 22 to the control device 12 . Fig.10 Indicates the state when a detection signal is sent from the detector 22.

[0103] When the comb plate 10 is displaced in the A direction by the second distance relative to the receiving member 21, the displacement of the comb plate 10 in the A direction relative to the receiving member 21 is restricted by the restriction device 23. Hereinafter, the state in which the displacement of the comb plate 10 in the A direction relative to the receiving member 21 is restricted by the restriction device 23 is also referred to as the second restricted state. Fig.11 Indicates the state immediately after entering the second restriction state.

[0104] The receiving member 21 can be displaced in the direction A relative to the truss 1 even in a state where the displacement of the comb plate 10 relative to the receiving member 21 in the direction A is restricted by the restriction device 23. In addition, even after the displacement of the comb plate 10 relative to the receiving member 21 in the direction A is restricted by the restriction device 23, the comb plate 10 is pressed in the direction A by the foreign matter D. Therefore, after the displacement of the comb plate 10 relative to the receiving member 21 in the direction A is restricted by the restriction device 23, the comb plate 10 and the receiving member 21 are displaced in the direction A relative to the truss 1 by further compressing the spring 25.

[0105] Fig.12 Indicates the state of step 2 stopping. Fig.12 In the state shown, the position of the comb plate 10 relative to the receiving member 21 is Fig.11 The position of the bearing member 21 relative to the truss 1 is Fig.11 The position shown is offset in the direction of A. Fig.12 In the illustrated state, the floor panel 9 is deflected upward and in the A direction by being pressed by the comb plate 10 .

[0106] exist Fig. 9 In the example shown, it can also play the role of Figure 3 and Figure 4 The examples shown have the same effect.

[0107] Fig.13 It is a diagram schematically showing another example of the safety device. Fig.13 It is equivalent to Figure 3 Cross section of the BB cross section. Fig.13 The example shown is similar to Figure 3 and Figure 4 The example shown is different in that the delay device 24 further includes a delay component 27. Fig.13 The example shown is similar to Figure 3 and Figure 4 The difference of the example shown is that the spring constant of spring 26 may also be not greater than the spring constant of spring 25. The spring constant of spring 26 may be greater or less than the spring constant of spring 25. The spring constant of spring 26 may also be the same as the spring constant of spring 25. Figure 3 and Figure 4 The examples shown are the same.

[0108] exist Fig.13 In the example shown, the delay device 24 is a device for delaying the displacement of the comb plate 10 relative to the receiving member 21 in the A direction relative to the truss 1 in comparison with the displacement of the receiving member 21 relative to the A direction. The delay device 24 delays the displacement of the comb plate 10 when the comb teeth 10c are subjected to a force in the A direction, so that the displacement of the comb plate 10 relative to the receiving member 21 in the A direction starts after the displacement of the receiving member 21 relative to the truss 1 in the A direction is restricted by the restriction device 23.

[0109] The delay member 27 prevents the comb plate 10 from being displaced in the direction A relative to the receiving member 21 until the comb teeth 10 c are subjected to the first force in the direction A in the first restricted state. When the comb teeth 10 c are subjected to the first force in the direction A in the first restricted state, the delay member 27 enables the comb plate 10 to be displaced in the direction A relative to the receiving member 21. The first force is greater than the force of the spring 25 pressing the truss 1 when the receiving member 21 is displaced in the direction A relative to the truss 1.

[0110] exist Fig.13 In the example shown, as the delay component 27, there are a delay component 27-1 and a delay component 27-2 (not shown). When the comb teeth 10c are subjected to the first force in the A direction in the first restricted state, the delay component 27-1 enables the comb plate 10 to be displaced in the A direction relative to the receiving component 21-1. For example, the delay component 27-1 is a pin. The delay component 27-1 is configured to pass through the end 10a of the comb plate 10, and the front end is inserted into the hole formed in the inclined surface 21-1a of the receiving component 21-1. In addition, the delay component 27-1 is configured perpendicularly to the inclined surface 21-1a.

[0111] When the comb teeth 10c are subjected to the first force in the direction A in the first restricted state, the delay member 27-2 enables the comb tooth plate 10 to be displaced relative to the receiving member 21-2 in the direction A. The delay member 27-2 is mounted to the end 10b of the comb tooth plate 10 and the receiving member 21-2 in the same structure as the delay member 27-1 is mounted to the end 10a of the comb tooth plate 10 and the receiving member 21-1.

[0112] Next, refer to Fig.14 and Fig.15 , yes Fig.13 In the example shown, the operation when the comb teeth 10 c are subjected to force in the A direction will be described. Fig.14 and Fig.15 This is a diagram for explaining an operation example of the safety device. Fig.14 and Fig.15 It is equivalent to Figure 3 A cross section of section BB is shown.

[0113] If the foreign matter D contacts the front end of the comb teeth 10c, the comb teeth 10c are then pressed in the direction A by the foreign matter D. Fig.13 In the example shown, since the displacement of the comb plate 10 relative to the receiving member 21 in the A direction is prevented by the delay member 27 , the spring 25 is compressed first, and the receiving member 21 is displaced in the A direction relative to the truss 1 .

[0114] When the receiving member 21 is displaced by a first distance in the A direction relative to the truss 1, the displacement of the receiving member 21 is detected by the detector 22. In addition, when the receiving member 21 is displaced by a second distance in the A direction relative to the truss 1, the displacement of the receiving member 21 in the A direction relative to the truss 1 is limited by the limiting device 23. Fig.14 The comb plate 10 does not displace in the A direction relative to the receiving member 21 until the first restricted state is reached.

[0115] When the comb teeth 10c are subjected to the first force in the A direction in the first restricted state, an excessive shear load acts on the delay member 27, and the delay member 27 breaks. In addition, the first force is set so that the detector 22 will not be damaged before the delay member 27 breaks. By the breaking of the delay member 27, the comb plate 10 can be displaced in the A direction relative to the receiving member 21. As a result, the compression of the spring 26 begins, and the comb plate 10 is displaced in the A direction relative to the receiving member 21.

[0116] Fig.15 Indicates the state of step 2 stopping. Fig.15 In the illustrated state, only the front end portion of the delay member 27 - 1 remains on the receiving member 21 - 1 .

[0117] if Figures 13 to 15In the example shown, the comb plate 10 does not shift in the direction A relative to the receiving member 21 from the time when the comb teeth 10c are pressed in the direction A to the time when the detector 22 performs detection. Therefore, detection by the detector 22 can be performed with high accuracy. In addition, since there is no need to increase the spring constant of the spring 26, protection against foreign matter D is also effective.

[0118] Fig.16 It is a diagram schematically showing another example of the safety device. Fig.16 It is equivalent to Figure 3 Cross section of the BB cross section. Fig.16 The example shown is similar to Fig. 9 The example shown is different in that the delay device 24 further includes a delay component 27. Fig.16 The example shown is similar to Fig. 9 The difference of the example shown is that the spring constant of spring 26 may also be not greater than the spring constant of spring 25. The spring constant of spring 26 may be greater or less than the spring constant of spring 25. The spring constant of spring 26 may also be the same as the spring constant of spring 25. Fig. 9 The examples shown are the same.

[0119] exist Fig.16 In the example shown, the delay device 24 is a device for delaying the displacement of the receiving member 21 in the A direction relative to the truss 1 compared to the displacement of the comb plate 10 in the A direction relative to the receiving member 21. The delay device 24 delays the displacement of the receiving member 21 when the comb teeth 10c are subjected to a force in the A direction, so that the displacement of the receiving member 21 in the A direction relative to the truss 1 starts after the displacement of the comb plate 10 in the A direction relative to the receiving member 21 is restricted by the restriction device 23.

[0120] The delay member 27 prevents the receiving member 21 from being displaced in the direction A relative to the truss 1 until the comb teeth 10 c are subjected to the first force in the direction A in the second restricted state. When the comb teeth 10 c are subjected to the first force in the direction A in the second restricted state, the delay member 27 enables the receiving member 21 to be displaced in the direction A relative to the truss 1. The first force is greater than the force of the spring 26 pressing the receiving member 21 when the comb tooth plate 10 is displaced in the direction A relative to the receiving member 21.

[0121] exist Fig.16In the example shown, as the delay member 27, there are a delay member 27-1 and a delay member 27-2 (not shown). When the comb teeth 10c are subjected to the first force in the A direction in the second restricted state, the delay member 27-1 enables the receiving member 21-1 to be displaced in the A direction relative to the truss 1. For example, the delay member 27-1 is a pin. The delay member 27-1 is arranged to penetrate both the lower part of the receiving member 21-1 and the upper part of the supporting member 1a. In addition, the delay member 27-1 is arranged in a manner perpendicular to the A direction.

[0122] When the comb teeth 10c receive the first force in the A direction in the second restricted state, the delay member 27-2 enables the receiving member 21-2 to be displaced relative to the truss 1 in the A direction. The delay member 27-2 is attached to the receiving member 21-2 and the supporting member 1b in the same structure as the delay member 27-1 is attached to the receiving member 21-1 and the supporting member 1a.

[0123] Next, refer to Fig.17 and Fig.18 , yes Fig.16 In the example shown, the operation when the comb teeth 10 c are subjected to force in the A direction will be described. Fig.17 and Fig.18 This is a diagram for explaining an operation example of the safety device. Fig.17 and Fig.18 It is equivalent to Figure 3 A cross section of section BB is shown.

[0124] If the foreign matter D contacts the front end of the comb teeth 10c, the comb teeth 10c are then pressed in the direction A by the foreign matter D. Fig.13 In the example shown, displacement of the receiving member 21 in the A direction relative to the truss 1 is prevented by the delay member 27 , so first, the spring 26 is compressed and the comb plate 10 is displaced in the A direction relative to the receiving member 21 .

[0125] When the comb plate 10 is displaced by a first distance in the A direction relative to the receiving member 21, the displacement of the comb plate 10 is detected by the detector 22. In addition, when the comb plate 10 is displaced by a second distance in the A direction relative to the receiving member 21, the displacement of the comb plate 10 in the A direction relative to the receiving member 21 is limited by the limiting device 23. Fig.17 The receiving member 21 does not displace in the A direction relative to the truss 1 until the second restricted state is reached.

[0126] When the comb teeth 10c are subjected to the first force in the A direction in the second restricted state, an excessive shear load acts on the delay member 27, and the delay member 27 breaks. In addition, the first force is set so that the detector 22 will not be damaged before the delay member 27 breaks. By the breaking of the delay member 27, the receiving member 21 can be displaced in the A direction relative to the truss 1. As a result, the compression of the spring 25 starts, and the receiving member 21 is displaced in the A direction relative to the truss 1. Fig.18 Indicates the state where step 2 is stopped.

[0127] if Figures 16 to 18 In the example shown, the receiving member 21 does not displace in the direction A relative to the truss 1 from the time when the comb teeth 10c are pressed in the direction A to the time when the detector 22 performs detection. Therefore, detection by the detector 22 can be performed with high accuracy. In addition, since there is no need to increase the spring constant of the spring 25, protection against foreign matter D is also effective.

Claims

1. A passenger conveyor, comprising: floor; a step that moves in a first direction to enter below the floor; a truss supporting the movable steps; a receiving member supported by the truss so as to be displaceable in the first direction relative to the truss; a comb plate having comb teeth facing the tread of the step, the comb plate being supported by the receiving member in a manner that allows displacement in the first direction relative to the receiving member; a detector for detecting whether the bearing component is displaced relative to the truss in the first direction by a first distance; a limiting device that limits the distance that the bearing member can be displaced in the first direction relative to the truss to a second distance that is longer than the first distance; as well as A delay device, which delays the displacement of the comb plate compared to the displacement of the supporting component when the comb teeth are subjected to force in the first direction, so that after the displacement of the supporting component relative to the truss in the first direction is limited by the limiting device, the displacement of the comb plate relative to the supporting component in the first direction starts or continues.

2. The passenger conveyor according to claim 1, wherein: The delay device comprises: a first spring that generates resistance when the receiving member is displaced in the first direction relative to the truss; and a second spring which generates resistance when the comb plate is displaced in the first direction relative to the receiving member, The spring constant of the second spring is greater than the spring constant of the first spring.

3. The passenger conveyor according to claim 1, wherein: The delay device comprises: a first spring, which generates resistance when the bearing component is displaced in the first direction relative to the truss; a second spring, which generates resistance when the comb plate is displaced in the first direction relative to the bearing component; as well as a delay component, wherein in a state where the displacement of the bearing component relative to the truss in the first direction is restricted by the restriction device, when the comb teeth are subjected to a first force in the first direction, the delay component enables the comb tooth plate to be displaced in the first direction relative to the bearing component, The first force is greater than a force of the first spring pressing the truss when the receiving member is displaced in the first direction relative to the truss.

4. A passenger conveyor, comprising: floor; a step that moves in a first direction to enter below the floor; a truss supporting the movable steps; a receiving member supported by the truss so as to be displaceable in the first direction relative to the truss; a comb plate having comb teeth facing the tread of the step, the comb plate being supported by the receiving member in a manner that allows displacement in the first direction relative to the receiving member; a detector for detecting whether the distance that the comb plate is displaced in the first direction relative to the bearing component reaches a first distance; a limiting device for limiting a distance by which the comb plate can be displaced in the first direction relative to the receiving member to a second distance longer than the first distance; as well as A delay device, which delays the displacement of the supporting component compared to the displacement of the comb plate when the comb teeth are subjected to force in the first direction, so that after the displacement of the comb plate relative to the supporting component in the first direction is limited by the limiting device, the displacement of the supporting component relative to the truss in the first direction begins or continues.

5. The passenger conveyor according to claim 4, wherein: The delay device comprises: a first spring that generates resistance when the receiving member is displaced in the first direction relative to the truss; and a second spring which generates resistance when the comb plate is displaced in the first direction relative to the receiving member, A spring constant of the first spring is greater than a spring constant of the second spring.

6. The passenger conveyor according to claim 4, wherein: The delay device comprises: a first spring, which generates resistance when the bearing component is displaced in the first direction relative to the truss; a second spring, which generates resistance when the comb plate is displaced in the first direction relative to the bearing component; as well as a delay component, wherein in a state where the displacement of the comb plate relative to the receiving component in the first direction is restricted by the restriction device, when the comb teeth are subjected to a first force in the first direction, the delay component enables the receiving component to be displaced in the first direction relative to the truss, The first force is greater than a force of the second spring pressing the receiving member when the comb plate is displaced in the first direction relative to the receiving member.

7. A safety device for a passenger conveyor, the passenger conveyor comprising: floor; a step that moves in a first direction to enter below the floor; and a truss, which supports the movable steps, The safety device comprises: a receiving member supported by the truss so as to be displaceable in the first direction relative to the truss; a comb plate having comb teeth facing the tread of the step, the comb plate being supported by the receiving member in a manner that allows displacement in the first direction relative to the receiving member; a detector for detecting whether the bearing component is displaced relative to the truss in the first direction by a first distance; a limiting device that limits the distance that the bearing member can be displaced in the first direction relative to the truss to a second distance that is longer than the first distance; as well as A delay device, which delays the displacement of the comb plate compared to the displacement of the supporting component when the comb teeth are subjected to force in the first direction, so that after the displacement of the supporting component relative to the truss in the first direction is limited by the limiting device, the displacement of the comb plate relative to the supporting component in the first direction starts or continues.

8. A safety device for a passenger conveyor, the passenger conveyor comprising: floor; a step that moves in a first direction to enter below the floor; and a truss, which supports the movable steps, The safety device comprises: a receiving member supported by the truss so as to be displaceable in the first direction relative to the truss; a comb plate having comb teeth facing the tread of the step, the comb plate being supported by the receiving member in a manner that allows displacement in the first direction relative to the receiving member; a detector for detecting whether the distance that the comb plate is displaced in the first direction relative to the bearing component reaches a first distance; a limiting device for limiting a distance by which the comb plate can be displaced in the first direction relative to the receiving member to a second distance longer than the first distance; as well as A delay device, which delays the displacement of the supporting component compared to the displacement of the comb plate when the comb teeth are subjected to force in the first direction, so that after the displacement of the comb plate relative to the supporting component in the first direction is limited by the limiting device, the displacement of the supporting component relative to the truss in the first direction begins or continues.

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