JP7824904B2 - Elevator landing door device - Google Patents

Description

The present invention relates to an elevator landing door device.

Elevator landing door devices generally include a door lock switch that detects the locking and unlocking of the landing door (see, for example, Patent Document 1). The door lock switch is electrically connected to the elevator control panel via wiring. As shown in FIG. 8, the door lock switch and control panel are electrically connected by connecting intra-tower wiring 101, which connects to a control panel (not shown) in the hoistway, with switch wiring 102, which connects to the door lock switch, via a connector 103. As also shown in FIG. 9, the connector 103 is attached to a wiring fixing bracket 104 provided on the landing door device, and the wiring fixing bracket 104 is attached to a rail frame 105 provided on the landing door device. The door lock switch 106 is attached to the rail frame 105, for example, via a guide rail and bracket (not shown).

Japanese Patent Application Laid-Open No. 2004-155572

In conventional elevator landing door devices, as shown in Figure 10, there is a concern that water running down the hoistway wall surface 107 can seep into the connector 103, along the surface of the rail frame 105 and the surface of the wiring fixing bracket 104, as indicated by the arrows in the figure, and cause poor contact. Furthermore, as shown in Figure 11, if the in-tower wiring 101 is close to or in contact with the rail frame 105 or wiring fixing bracket 104, water can seep into the connector 103, along the in-tower wiring 101 from the rail frame 105 or wiring fixing bracket 104, and cause poor contact.

To protect the connector 103 from water intrusion, one possible solution is to attach a case 108 to the wiring fixing bracket 104, cover the connector 103 with this case 108, and connect the in-tower wiring 101 and switch wiring 102 from the bottom of the case 108 toward the connector 103, as shown in Figure 12. However, if this structure is adopted, the addition of the case 108 increases the number of parts. Note that in this specification, "water" can be interchangeably referred to as "liquid."

The object of the present invention is to provide an elevator landing door device that can protect the connector connecting the tower wiring and the switch wiring from water intrusion without covering the connector with a case.

In order to solve the above problems, for example, the configurations described in the claims are adopted.
The present application includes multiple means for solving the above-mentioned problems, one of which is an elevator landing door device including a rail frame on which a door rail for guiding the movement of the landing door is attached, a door lock switch that detects the locking and unlocking of the landing door, and a wiring fixing bracket attached to the rail frame for connecting and fixing a switch wiring connected to the door lock switch and an in-tower wiring connected to a control panel installed in the hoistway via a connector. The wiring fixing bracket integrally includes a first plate-shaped portion fixed to the rail frame, a second plate-shaped portion bent at an end of the first plate-shaped portion and positioned vertically, and a third plate-shaped portion bent at a position below the first plate-shaped portion and away from the path of water running down the surface of the second plate-shaped portion. The tip end of the third plate-shaped portion is positioned at the same height as or higher than the base end of the third plate-shaped portion. A connector is attached to the third plate-shaped portion, and the switch wiring and the in-tower wiring are connected to the connector below the third plate-shaped portion.

According to the present invention, the connector that connects the in-tower wiring and the switch wiring can be protected from water intrusion without covering the connector with a case.
Problems, configurations, and effects other than those described above will become apparent from the following description of the embodiments.

FIG. 1 is a front view of an elevator landing door device according to a first embodiment. FIG. 2 is an enlarged front view of a portion of the elevator landing door device according to the first embodiment. FIG. 2 is an enlarged side view of a portion of the elevator landing door device according to the first embodiment. 10 is an enlarged view illustrating the connector mounting structure on the third plate-shaped portion. FIG. FIG. 4 is a diagram illustrating a water movement path in the first embodiment. FIG. 10 is a front view showing the structure of a wiring fixing bracket provided in an elevator landing door device according to a second embodiment. FIG. 10 is a side view showing the structure of a wiring fixing bracket provided in an elevator landing door device according to a second embodiment. FIG. 1 is an enlarged side view of a portion of a conventional elevator landing door device. FIG. 1 is an enlarged side view of a portion of a conventional elevator landing door device. FIG. 1 is a diagram (part 1) illustrating the water movement path in a conventional example. FIG. 10 is a diagram (part 2) illustrating the water movement path in a conventional example. FIG. 10 is a diagram showing the connector covered with a case.

Embodiments of the present invention will be described in detail below with reference to the drawings. In this specification and drawings, elements having substantially the same function or configuration will be designated by the same reference numerals, and duplicate descriptions will be omitted.

First Embodiment
FIG. 1 is a front view of an elevator hall door device according to a first embodiment.
As shown in FIG. 1 , an elevator landing door device 10 includes a jamb 11, landing doors 12 that open and close entrances formed within the frames of the jamb 11, a rail frame 14 to which a door rail 13 that guides the movement of the landing doors 12 is attached, a door hanger 16 that has a hanger roller 15 that moves while rotating on the door rail 13 and supports the landing doors 12 in a suspended state, a door lock switch 17 that detects the locking and unlocking of the landing doors 12, a wiring fixing bracket 18 that is attached to the rail frame 14, and a sill 19 that has a groove that guides the movement of the landing doors 12.

The landing door 12 is composed of two door panels, and each door panel moves left and right in Figure 1 at a predetermined speed ratio to open and close the entrance to the landing. Figure 1 shows the landing door 12 in a closed state.

The rail frame 14 is a long, elongated member that extends in the direction of movement (opening/closing direction) of the landing door 12. Although not shown, the rail frame 14 is attached to the wall of the elevator shaft using brackets, bolts, etc.

The door lock switch 17 is disposed at one longitudinal end of the rail frame 14. The door lock switch 17 detects the state in which the door hook 20 is engaged with a door lock claw (not shown) as the locked state of the landing door 12, and detects the state in which the door hook 20 is disengaged from the door lock claw as the unlocked state of the landing door 12. The door lock switch 17 outputs a detection signal that is turned on when it detects the locked state of the landing door 12 and turned off when it detects the unlocked state of the landing door 12.

The door lock switch 17 is attached to the rail frame 14 via, for example, the door rail 13 and a switch mounting bracket (not shown). The door hook 20 is rotatably attached to the door hanger 16 and moves together with the door hanger 16. The door lock claw is attached to the rail frame 14 together with the door lock switch 17.

Figure 2 is an enlarged front view of a portion of the elevator landing door device according to the first embodiment, and Figure 3 is an enlarged side view of a portion of the elevator landing door device according to the first embodiment. Figure 3 shows the wiring fixing bracket 18 and other components as viewed from the longitudinal direction of the rail frame 14.

As shown in Figures 2 and 3, the rail frame 14 has an upper plate portion 21 and a lower plate portion 22 that are integral with each other. The rail frame 14 is an integral structure obtained, for example, by pressing (shearing, bending, etc.) a single metal plate. The upper plate portion 21 is arranged horizontally. The lower plate portion 22 is bent at a right angle from the upper plate portion 21. The lower plate portion 22 is arranged vertically.

The wiring fixing bracket 18 is a bracket that connects and fixes the switch wiring 31 connected to the door lock switch 17 and the in-tower wiring 32 connected to the control panel (not shown) using a connector 33. The switch wiring 31 is pulled out from the door lock switch 17 to output the detection signal described above. The control panel is a device that provides overall control of the elevator. The control panel is installed at the top of the hoistway (e.g., in the machine room).

The wiring fixing bracket 18 integrally comprises a first plate-shaped portion 25 fixed to the rail frame 14, a second plate-shaped portion 26 bent at the end of the first plate-shaped portion 25, and a third plate-shaped portion 27 bent below the first plate-shaped portion 25. The wiring fixing bracket 18 is an integral structure obtained, for example, by pressing (shearing, bending, etc.) a single metal plate.

The first plate-shaped portion 25 is arranged horizontally. The first plate-shaped portion 25 is placed on top of the upper plate portion 21 of the rail frame 14 and fixed to the rail frame 14 with fixing bolts or the like (not shown).

The second plate-shaped portion 26 is bent at a right angle at the end of the first plate-shaped portion 25. The second plate-shaped portion 26 is positioned vertically facing the lower plate portion 22 of the rail frame 14.

As shown in Figure 3, the third plate-shaped portion 27 is bent so that it protrudes in the same direction as the first plate-shaped portion 25 when viewed from the longitudinal direction of the rail frame 14. As a result, the space above the third plate-shaped portion 27 is covered by the upper plate portion 21 of the rail frame 14.

The third plate-shaped portion 27 is positioned closer to the door lock switch 17 than the first plate-shaped portion 25 in the longitudinal direction of the rail frame 14. The third plate-shaped portion 27 is also positioned away from the path of water running down the surface of the second plate-shaped portion 26 (the path indicated by the dashed arrow in Figure 2). A drain groove 28 (Figure 2) is formed at the boundary between the second plate-shaped portion 26 and the third plate-shaped portion 27. The drain groove 28 is a groove that prevents water running down the surface of the second plate-shaped portion 26 from running down to the third plate-shaped portion 27.

As shown in FIG. 3, the third plate-shaped portion 27 is inclined with respect to the horizontal plane so that the tip end 27a of the third plate-shaped portion 27 is positioned higher than the base end 27b of the third plate-shaped portion 27. The bending angle θ of the third plate-shaped portion 27 based on the second plate-shaped portion 26 is an angle greater than 90 degrees and less than 180 degrees, i.e., an obtuse angle. This bending angle θ is defined as the angle formed by the underside of the third plate-shaped portion 27 with respect to the surface of the second plate-shaped portion 26, which is the reference plane.

The connector 33 is disposed on the upper surface of the third plate-shaped portion 27 of the wiring fixing bracket 18. The connector 33 is supported by a connector support member 35 (details of which will be described later) in a state where it is floating above the upper surface of the third plate-shaped portion 27. In contrast, the switch wiring 31 and the in-tower wiring 32 are connected to the connector 33 from below the third plate-shaped portion 27.

As shown in FIG. 2, the switch wiring 31 is fastened to the wiring fixing bracket 18 by wiring fasteners 36 and 37. Wiring fastener 36 is located lower than wiring fastener 37. Wiring fastener 37 is located at one end of the third plate-shaped portion 27 in the longitudinal direction of the rail frame 14. The switch wiring 31 drawn out from the door lock switch 17 passes through wiring fastener 36 and wiring fastener 37 in that order and extends to the connector 33.

The intra-tower wiring 32 is fastened to the wiring fixing bracket 18 by wiring fasteners 38 and 39. Wiring fastener 38 is positioned lower than wiring fastener 39. Wiring fastener 39 is positioned on the other end side of the third plate-shaped portion 27 in the longitudinal direction of the rail frame 14 (the opposite side from wiring fastener 37). The intra-tower wiring 32 pulled out from the control panel is extended along the wall surface of the hoistway to the rail frame 14 and wiring fixing bracket 18 of the landing door device 10, and then extends to the connector 33 via wiring fastener 38 and wiring fastener 39. In addition, the excess length of the intra-tower wiring 32 is fastened to the second plate-shaped portion 26 of the wiring fixing bracket 18 by wiring fastener 38.

FIG. 4 is an enlarged view illustrating the connector mounting structure on the third plate-shaped portion.
4, the connector 33 is disposed on the upper surface 271 side of the third plate-shaped portion 27, and is supported by a plurality of (two in the illustrated example) connector support members 35. The connector support members 35 are disposed on both sides of the connector 33, with the connector 33 sandwiched therebetween.

The connector support member 35 has a clip portion 35a, a spacer portion 35b, and a bundling portion 35c. The clip portion 35a has appropriate radial flexibility and is engaged with the underside 272 of the third plate-shaped portion 27 through a through-hole 29 provided in the third plate-shaped portion 27. The spacer portion 35b is disposed between the clip portion 35a and the bundling portion 35c. The spacer portion 35b is disposed so as to sandwich the third plate-shaped portion 27 between the clip portion 35a and the spacer portion 35b. The spacer portion 35b has a predetermined height T, which ensures a predetermined space between the upper surface 271 of the third plate-shaped portion 27 and the connector 33. The connector 33 is disposed in a floating state above the upper surface 271 of the third plate-shaped portion 27, corresponding to the height T of the spacer portion 35b. The bundling section 35c is the part that bundles the switch wiring 31 and the in-tower wiring 32.

In the elevator landing door device 10 according to the first embodiment described above, the wiring fixing bracket 18 is configured by bending a third plate-shaped portion 27 below the first plate-shaped portion 25 and away from the path of water running along the surface of the second plate-shaped portion 26. A connector 33 is disposed on the third plate-shaped portion 27, and the switch wiring 31 and the in-tower wiring 32 are connected to the connector 33 from below the third plate-shaped portion 27. As a result, as shown in FIG. 5 , water moving along the hoistway wall surface 40 flows down the surface of the rail frame 14 and the surface of the wiring fixing bracket 18, as indicated by the arrows in the figure, without passing through the third plate-shaped portion 27. Therefore, the connector 33 connecting the switch wiring 31 and the in-tower wiring 32 can be protected from water intrusion without being covered with a case. Furthermore, by eliminating the need for a case, the equipment costs required to purchase a case can be reduced, and the work of securing the wiring to the case and the case to the wiring securing bracket 18 can be eliminated.

In addition, in the landing door device 10 according to the first embodiment, the third plate-shaped portion 27 is inclined relative to the horizontal plane so that the tip end 27a is positioned higher than the base end 27b. As a result, even if water moving along the surface of the wiring fixing bracket 18 reaches the base end 27b of the third plate-shaped portion 27, the inclination of the third plate-shaped portion 27 can suppress the movement of water from the base end 27b of the third plate-shaped portion 27 toward the tip end 27a.

The landing door device 10 according to the first embodiment also includes a connector support member 35 that supports the connector 33 in a floating state above the upper surface 271 of the third plate-shaped portion 27. This prevents the connector 33 from coming into contact with water, even if water (water droplets, a water film, etc.) is present on the upper surface 271 of the third plate-shaped portion 27.

In addition, in the landing door device 10 according to the first embodiment, the third plate-shaped portion 27 is bent so as to protrude in the same direction as the first plate-shaped portion 25 when viewed from the longitudinal direction of the rail frame 14. As a result, the upper plate portion 21 of the rail frame 14 and the first plate-shaped portion 25 of the wiring fixing bracket 18, which are arranged above the third plate-shaped portion 27, function as a so-called umbrella, which is advantageous in terms of drip prevention.

In addition, in the landing door device 10 according to the first embodiment, a drainage groove 28 is formed at the boundary between the second plate-shaped portion 26 and the third plate-shaped portion 27. This more reliably prevents water from entering from the second plate-shaped portion 26 to the third plate-shaped portion 27.

In addition, in the landing door device 10 according to the first embodiment, the third plate-shaped portion 27 is positioned closer to the door lock switch 17 than the first plate-shaped portion 25. This allows the connector 33 to be positioned closer to the worker's standing position near the elevator entrance when the worker connects the switch wiring 31 and the in-tower wiring 32 using the connector 33. This improves the visibility and ease of installation during the connector connection work.

Second Embodiment
The landing door apparatus according to the second embodiment is different from the first embodiment in the configuration of the wiring fixing bracket.
Fig. 6 is a front view showing the structure of a wiring fixing bracket provided in an elevator hall door device according to a second embodiment, and Fig. 7 is a side view showing the structure of a wiring fixing bracket provided in an elevator hall door device according to a second embodiment. Fig. 7 shows the wiring fixing bracket as viewed from the longitudinal direction of the rail frame.

As shown in Figures 6 and 7, the wiring fixing bracket 18A is a bracket that integrally comprises a first plate-shaped portion 25A that is fixed to a rail frame (not shown), a second plate-shaped portion 26A that is bent at the end of the first plate-shaped portion 25A, and a third plate-shaped portion 27A that is bent below the first plate-shaped portion 25A.

The first plate-shaped portion 25A is arranged horizontally. As in the first embodiment, the first plate-shaped portion 25A is placed on top of the rail frame and fixed to the rail frame with fixing bolts or the like (not shown).

The second plate-shaped portion 26A is bent at a right angle at the end of the first plate-shaped portion 25A. The second plate-shaped portion 26A is positioned vertically facing the lower plate portion of the rail frame, similar to the first embodiment described above.

The third plate-shaped portion 27A is inclined relative to the horizontal plane, as in the first embodiment. Furthermore, the third plate-shaped portion 27A is formed below the first plate-shaped portion 25A (directly below in the illustrated example) and is narrower than the first plate-shaped portion 25A. Specifically, as shown in FIG. 6, the third plate-shaped portion 27A is bent so as to protrude in the same direction as the first plate-shaped portion 25A, with the center of the second plate-shaped portion 26A hollowed out. Furthermore, the third plate-shaped portion 27A is positioned away from the path of water running down the surface of the second plate-shaped portion 26A (the path indicated by the two-dot chain arrow in FIG. 6). A drain groove 28A (FIG. 6) is formed at the boundary between the second plate-shaped portion 26A and the third plate-shaped portion 27A.

Note that the connector mounting structure and wiring arrangement are basically the same as in the first embodiment above, so explanations will be omitted.

In the second embodiment described above, the third plate-shaped portion 27A is formed below the first plate-shaped portion 25A and is narrower than the first plate-shaped portion 25A. Therefore, the size of the wiring fixing bracket 18A can be reduced compared to the first embodiment described above.

<Modifications, etc.>
The present invention is not limited to the above-described embodiments and includes various modifications. For example, the above-described embodiments have been described in detail to facilitate understanding of the present invention, but the present invention is not necessarily limited to those including all of the configurations described in the above-described embodiments. Furthermore, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment. It is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to delete part of the configuration of each embodiment, add other configurations, or replace it with other configurations.

In addition, in the above embodiment, a preferred example was adopted in which the third plate-shaped portion 27 of the wiring fixing bracket 18 was inclined relative to the horizontal plane. However, this is not limited to this, and a configuration in which the tip end 27a of the third plate-shaped portion 27 is positioned at the same height as the base end 27b, i.e., a configuration in which the third plate-shaped portion 27 is positioned horizontally, may also be adopted.

In addition, in the above embodiment, as a preferred example, the third plate-shaped portion 27 is bent so as to protrude in the same direction as the first plate-shaped portion 25 when viewed from the longitudinal direction of the rail frame 14, but this is not limited thereto, and the third plate-shaped portion 27 may also be bent so as to protrude in the opposite direction to the first plate-shaped portion 25.

In addition, in the above embodiment, the first plate-shaped portion 25 of the wiring fixing bracket 18 is superimposed on the upper plate portion 21 of the rail frame 14, but this is not limited to this, and the first plate-shaped portion 25 of the wiring fixing bracket 18 may also be superimposed below the upper plate portion 21 of the rail frame 14.

10...Landing door device, 12...Landing door, 13...Door rail, 14...Rail frame, 17...Door lock switch, 18, 18A...Wiring fixing bracket, 21...Upper plate portion, 25, 25A...First plate portion, 26, 26A...Second plate portion, 27, 27A...Third plate portion, 27a...Tip portion, 27b...Base portion, 28, 28A...Drain groove, 31...Switch wiring, 32...In-tower wiring, 33...Connector, 35...Connector support member

Claims (7)

a rail frame on which a door rail that guides the movement of the landing door is attached;
a door lock switch that detects locking and unlocking of the landing door;
a wiring fixing bracket attached to the rail frame for connecting and fixing a switch wiring connected to the door lock switch and an in-tower wiring connected to a control panel installed in the hoistway by a connector;
An elevator landing door device comprising:
The wiring fixing bracket is
a first plate-shaped portion fixed to the rail frame;
a second plate-shaped portion bent at an end of the first plate-shaped portion and disposed vertically;
a third plate-shaped portion bent below the first plate-shaped portion and at a position away from a path of water flowing down the surface of the second plate-shaped portion;
It has these in one piece,
a tip end of the third plate-shaped portion is disposed at the same height as or higher than a base end of the third plate-shaped portion;
the connector is disposed on the third plate-shaped portion,
the switch wiring and the in-tower wiring are connected to the connector from below the third plate-shaped portion. The elevator hall door device according to claim 1, wherein the third plate-shaped portion is inclined with respect to a horizontal plane so that the tip end is positioned higher than the base end. The elevator hall door device according to claim 1, further comprising a connector support member that supports the connector in a floating state above an upper surface of the third plate-shaped portion. The rail frame has an upper plate portion that is horizontally disposed,
the first plate-shaped portion is fixed to the rail frame in a state where it is overlapped with the upper plate-shaped portion,
The elevator hall door device according to claim 1, wherein the third plate-shaped portion is bent so as to protrude in the same direction as the first plate-shaped portion when viewed from the longitudinal direction of the rail frame. The elevator hall door device according to claim 1, wherein a drain groove is formed at a boundary between the second plate-shaped portion and the third plate-shaped portion. The elevator hall door device according to claim 1, wherein the third plate-shaped portion is disposed closer to the door lock switch than the first plate-shaped portion. The elevator hall door device according to claim 1, wherein the third plate-shaped portion is formed below the first plate-shaped portion and is narrower than the first plate-shaped portion.