Elevator door device

Abstract

To solve the problem that the longitudinal dimension of a rail frame increases in order to mount a protection tool mounting bracket on the rail frame.SOLUTION: An elevator door device includes: a rail frame 15 mounted with a rail member for guiding the movement of a car door; a pulley bracket 23 having a first fixed piece 231 fixed to the rail frame and a pulley mounting piece 232 mounted with a driven pulley 22; and a protection tool mounting bracket 50 having a second fixed piece 512 fixed to the rail frame so as to be at least partly overlapped with the first fixed piece of the pulley bracket when viewed in the vertical direction, and a protection tool mounting piece 521 mounted with a wiring protection tool for protecting a wiring connected to a pinch preventing detection device mounted on the car door.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an elevator door device. [Background technology]

[0002] Conventionally, elevator door systems that open and close car doors provided on passenger cars have been known. The elevator door systems include a motor that serves as a drive source for opening and closing the car doors, and the car doors are opened and closed by driving the motor.

[0003] Elevator door systems are equipped with safety devices to prevent passengers or luggage from getting caught in the car doors when they are closing. The safety devices include a detector attached to the edge of the car door (door panel) and a controller that controls the opening and closing of the car door based on the detection results of the detector. When the detector detects that the edge of the car door has come into contact with a passenger or luggage, the controller operates the car door in the direction of opening when it is half-closing.

[0004] In a safety device configured as described above, the detection device and the control device must be electrically connected by wiring (cable, etc.) to send the detection result of the detection device to the control device as an electrical signal. In this case, the wiring is attached in a loose state so that it is not pulled strongly by the opening and closing of the car door. For this reason, the wiring must be protected to prevent it from being damaged by rubbing when the car door is opened and closed. Patent Document 1 describes a technology in which the cable serving as the wiring is routed along a roller chain serving as a wiring protector. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-308221 Summary of the Invention [Problem to be solved by the invention]

[0006] However, when a roller chain is used as a wiring protector, the roller chain is partially excessively bent when the car door is opened. This bending is repeated each time the car door is opened and closed, which may result in insufficient protection of the wiring. Therefore, it is possible to consider using a guide chain instead of a roller chain as a wiring protector. A guide chain has a smaller bending angle than a roller chain and is designed not to bend beyond a certain angle. This reduces damage to the wiring caused by repeated bending and protects the wiring. However, when a guide chain is used as a wiring protector, the end of the guide chain extending from the car door must be fixed to a protector mounting bracket, and this protector mounting bracket must be attached to the end of the rail frame. This requires space to be secured at the end of the rail frame for the protector mounting bracket, which increases the longitudinal dimension of the rail frame.

[0007] An object of the present invention is to provide an elevator door device that can reduce the longitudinal dimension of the rail frame. [Means for solving the problem]

[0008] 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, and one example is an elevator door device comprising: a rail frame to which a rail member that guides the movement of the car door is attached; a pulley bracket having a first fixed piece fixed to the rail frame and a pulley attachment piece to which a driven pulley that rotates by receiving a driving force from a drive motor for opening and closing the car door is attached; and a protector attachment bracket having a second fixed piece fixed to the rail frame so as to overlap at least a portion of the first fixed piece of the pulley bracket when viewed vertically; and a protector attachment piece to which a wiring protector that protects wiring connected to a pinch prevention detection device attached to the car door is attached. [Effects of the Invention]

[0009] According to the present invention, the longitudinal dimension of the rail frame can be reduced. Problems, configurations, and effects other than those described above will become apparent from the following description of the embodiments. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a front view showing the configuration of an elevator door device according to this embodiment. [Figure 2] 1 is a side view showing the configuration of an elevator door device according to this embodiment. [Figure 3] FIG. 2 is an enlarged front view of a portion of the elevator door device according to the present embodiment. [Figure 4] 10 is a diagram showing the arrangement of the rail frame, pulley bracket, and first bracket as viewed from the vertical direction. FIG. [Figure 5] FIG. 4 is a plan view illustrating the mounting structure of the first bracket and the second bracket. [Figure 6] FIG. 10 is a side view showing the configuration of an elevator door device according to a comparative example. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this specification and the drawings, elements having substantially the same functions or configurations are designated by the same reference numerals, and redundant description will be omitted.

[0012] Fig. 1 is a front view showing the configuration of an elevator door system according to this embodiment. Fig. 2 is a side view showing the configuration of an elevator door system according to this embodiment. In Figs. 1 and 2, the X and Y directions are parallel to the horizontal direction. The X and Y directions are also perpendicular to the vertical direction.

[0013] As shown in Figures 1 and 2, elevator door device 10 is a device that opens and closes car doors (door panels) 12a, 12b by moving car doors 12a, 12b in an X direction parallel to the longitudinal direction of rail frame 15. In this embodiment, a single-leaf elevator door device 10 with two doors is shown as an example. However, the number and type of doors in the elevator door device are not limited to this example.

[0014] The car doors 12a and 12b open and close the entrance and exit of the car (not shown). The car doors 12a and 12b move in the X direction along the car sill (not shown). When the entrance and exit of the car is closed, the car door 12a moves ahead of the car door 12b. When the entrance and exit of the car is opened or closed, the car door 12b moves half the distance of the car door 12a. When the entrance and exit of the car is closed, the car doors 12a and 12b are positioned with their positions shifted to the left and right, as shown in FIG. 1. When the entrance and exit of the car is open, the car doors 12a and 12b are stored in a stacked manner in the door pocket portion 13.

[0015] An anti-pinch detector 14 is attached to the edge of the door stop side (right side in FIG. 1) of the car door 12a. The anti-pinch detector 14 is a device that outputs a detection signal indicating that the edge of the car door 12a has come into contact with or come close to the body of a passenger or luggage. The anti-pinch detector 14 is configured using a contact sensor, a non-contact sensor, etc.

[0016] The elevator door device 10 includes the aforementioned rail frame 15, a motor 17 mounted on the rail frame 15 via a motor bracket 16, and a door opening / closing mechanism 18 that opens and closes the car doors 12a and 12b using the driving force of the motor 17.

[0017] The rail frame 15 is a member that serves as a base for attaching the motor 17 and the door opening / closing mechanism 18. The rail frame 15 is an elongated member that is long in the X direction, which is parallel to the opening and closing direction of the car doors 12a, 12b. One longitudinal end 15a of the rail frame 15 is disposed on the door stop side (the right side in FIG. 1), and the other longitudinal end 15b of the rail frame 15 is disposed on the door pocket side (the left side in FIG. 1). Near the end 15b of the rail frame 15, a wall 11 is disposed vertically at a predetermined distance A from the edge of the rail frame 15. The predetermined distance A is set so that the wire protector 40 does not interfere with (contact with) the wall 11 when the car entrance is fully opened by the movement of the car doors 12a, 12b.

[0018] The rail frame 15 integrally has a rail support portion 151 and a plate-shaped portion 152. The rail support portion 151 is a portion that supports hanger rails 26a and 26b, which will be described later. As shown in FIG. 2, the rail support portion 151 is arranged in an upright position. As shown in FIG. 2, the plate-shaped portion 152 is formed so as to be bent at a right angle from the upper edge of the rail support portion 151. As shown in FIG. 1, the plate-shaped portion 152 is arranged horizontally along the X direction. The upper and lower surfaces of the plate-shaped portion 152 are arranged parallel to a horizontal plane.

[0019] The motor bracket 16 is attached to the rail frame 15. The motor 17 is attached to the motor bracket 16. The motor 17 is also installed at the top of the rail frame 15 on the door stop side.

[0020] A drive pulley 19 is attached to the drive shaft (rotating shaft) of the motor 17. The drive pulley 19 rotates in accordance with the rotation of the drive shaft of the motor 17. A drive belt 20 is wound around the drive pulley 19. The drive belt 20 is an endless belt. The drive belt 20 is wound around the drive pulley 19 and a driven pulley 22.

[0021] The driven pulley 22 is rotatably attached to a pulley bracket 23. The driven pulley 22 is a pulley that rotates by receiving the driving force of the motor 17. More specifically, when the driving pulley 19 rotates by the driving of the motor 17, the driven pulley 22 rotates by the driving force transmitted via the drive belt 20.

[0022] The pulley bracket 23 is attached to the rail frame 15. The pulley bracket 23 integrally includes a first fixed piece 231, a pulley mounting piece 232, and a position adjustment piece 233. The first fixed piece 231 is disposed horizontally, while the pulley mounting piece 232 and the position adjustment piece 233 are disposed vertically. The first fixed piece 231 is fixed to the rail frame 15. More specifically, the first fixed piece 231 is fixed to the upper surface of the plate-shaped portion 152 of the rail frame 15. The pulley mounting piece 232 is oriented along the X direction, and the position adjustment piece 233 is oriented along the Y direction. The driven pulley 22 is attached to the pulley mounting piece 232. The first fixed piece 231 is formed in a plate shape that is long in the X direction. One longitudinal end of the first fixed piece 231 (the left end in FIG. 3 ) is positioned approximately flush with the edge of the rail frame 15 on the door pocket side. The position adjustment piece 233 stands vertically from the other longitudinal end (the right end in FIG. 3) of the first fixed piece 231. The position adjustment piece 233 is a part for moving the pulley bracket 23 in the X direction by hitting the position adjustment piece 233 with a hammer or the like when adjusting the attachment position of the pulley bracket 23 in the X direction.

[0023] The door opening / closing mechanism 18 includes a door hanger 24a attached to the upper part of the car door 12a, a door hanger 24b attached to the upper part of the car door 12b, a hanger roller 25a attached to the door hanger 24a, a hanger roller 25b attached to the door hanger 24b, a hanger rail 26a that guides the movement of the door hanger 24a, a hanger rail 26b that guides the movement of the door hanger 24b, a belt gripping member 27 (see FIG. 1) attached to the door hanger 24a, and a pulley mechanism 28 that adjusts the movement ratio of the car doors 12a and 12b.

[0024] The door hanger 24a is supported on the hanger rail 26a via hanger rollers 25a. The hanger rollers 25a are rotatably attached to the door hanger 24a. An anti-vibration roller 31a is rotatably attached to the door hanger 24a. The anti-vibration roller 31a is attached to the door hanger 24a using bolts 32a. The anti-vibration roller 31a contacts the underside of the hanger rail 26a, sandwiching the hanger rail 26a between itself and the hanger roller 25a. The hanger rollers 25a are arranged on both sides of the door hanger 24a in the longitudinal direction of the hanger rail 26a. The hanger rollers 25a are placed on top of the hanger rail 26a.

[0025] Similarly, the door hanger 24b is supported on the hanger rail 26b via hanger rollers 25b. The hanger rollers 25b are rotatably attached to the door hanger 24b. An anti-vibration roller 31b is rotatably attached to the door hanger 24b. The anti-vibration roller 31b is attached to the door hanger 24b using bolts 32b. The anti-vibration roller 31b contacts the underside of the hanger rail 26b, with the hanger rail 26b sandwiched between the hanger rollers 25b and the anti-vibration roller 31b. The hanger rollers 25b are arranged on both sides of the door hanger 24b in the longitudinal direction of the hanger rail 26b. The hanger rollers 25b are placed on top of the hanger rail 26b.

[0026] As shown in Fig. 2, the hanger rails 26a, 26b are attached to the rail frame 15 using rail fixing members 34 and rail fixing bolts 35. The hanger rails 26a, 26b are rail-shaped members that are long in the X direction. The hanger rail 26a corresponds to a rail member that guides the movement of the car door 12a, and the hanger rail 26b corresponds to a rail member that guides the movement of the car door 12b. The hanger rails 26a, 26b are arranged parallel to the X direction.

[0027] 1, the belt gripping member 27 extends upward from the door hanger 24a. The upper end of the belt gripping member 27 grips the underside of the drive belt 20.

[0028] The pulley mechanism 28 is a mechanism that adjusts the movement ratio of the car doors 12a and 12b so that the movement distance of the car door 12b is half the movement distance of the car door 12a. Note that the configuration of the pulley mechanism 28 is shown in a simplified form in Figures 1 and 2.

[0029] A protector mounting bracket 50 is attached to the door pocket side end 15b of the rail frame 15. The protector mounting bracket 50 is a bracket for mounting a wiring protector 40 that protects wiring (not shown). The wiring is composed of a cable or the like for electrically connecting a control device (not shown) mounted on the car and the anti-entrapment detector 14. One end of the wiring is connected to the anti-entrapment detector 14, and the other end of the wiring is connected to the control device.

[0030] The wiring protector 40 is preferably configured by a guide chain. One end of the wiring protector 40 is attached to the car door 12a via a mounting fixture 41, and the other end of the wiring protector 40 is attached to a protector mounting bracket 50 via a mounting fixture 42. The wiring protector 40 hangs down between the mounting fixtures 41 and 42 due to its own weight.

[0031] FIG. 3 is an enlarged front view of a portion of the elevator door device according to this embodiment. 3, the protector mounting bracket 50 is made up of a first bracket 51 and a second bracket 52. In other words, the protector mounting bracket 50 is made up of two structurally independent brackets.

[0032] When the protector mounting bracket 50 is viewed from the longitudinal direction (X direction) of the rail frame 15, the first bracket 51 is formed in a Z shape, and the second bracket 52 is formed in an inverted L shape, as shown in Fig. 2. The first bracket 51 integrally includes a first connecting piece 511 and a second fixing piece 512. The second bracket 52 integrally includes a protector mounting piece 521 and a second connecting piece 522.

[0033] The second fixed piece 512 is fixed to the rail frame 15. The above-mentioned first fixed piece 231 is fixed to the upper surface of the plate-shaped portion 152 of the rail frame 15, and the second fixed piece 512 is fixed to the lower surface of the plate-shaped portion 152 of the rail frame 15. The first fixed piece 231 and the second fixed piece 512 are fastened together to the rail frame 15. More specifically, the plate-shaped portion 152 of the rail frame 15 is sandwiched between the first fixed piece 231 and the second fixed piece 512 from above and below, and in this state the first fixed piece 231 and the second fixed piece 512 are fastened and fixed to the plate-shaped portion 152 using bolts 29 and nuts 30.

[0034] The bolt 29 and the nut 30 are disposed at two locations in the X direction. A through-hole (not shown) for passing the threaded portion of the bolt 29 is formed in each of the first fixed piece 231, the plate-shaped portion 152, and the second fixed piece 512. The head of the bolt 29 is pressed against the first fixed piece 231 via a washer or the like, and the threaded portion of the bolt 29 is disposed in a state of protruding downward from the second fixed piece 512. The nut 30 is engaged with the threaded portion of the bolt 29. As a result, the first fixed piece 231, the plate-shaped portion 152, and the second fixed piece 512 are sandwiched between the head of the bolt 29 and the nut 30. The first fixed piece 231 and the second fixed piece 512 are fastened together to the plate-shaped portion 152 of the rail frame 15 by the fastening force of the bolt 29 and the nut 30.

[0035] The first connecting piece 511 and the second connecting piece 522 are formed to connect the first bracket 51 and the second bracket 52. The first connecting piece 511 and the second connecting piece 522 are connected to each other at a position lower than the fixed position of the second fixed piece 512 relative to the rail frame 15. The first connecting piece 511 and the second connecting piece 522 are connected by two bolts 38. The head of the bolt 38 is positioned upward, and the threaded portion of the bolt 38 is positioned downward. The first connecting piece 511 and the second connecting piece 522 are each positioned horizontally. The second bracket 52 is supported with the second connecting piece 522 placed on the first connecting piece 511.

[0036] The protector attachment piece 521 is disposed vertically (vertically) so as to form a right angle with the first connecting piece 511. As shown in FIG. 2, the protector attachment piece 521 is disposed so as to face the rail support portion 151 of the rail frame 15 in the Y direction. The protector attachment piece 521 is disposed closer to the elevator hall than the rail frame 15. A fixing hole 521a (FIGS. 1 and 3) for fixing the wiring protector 40 is provided in the lower part of the protector attachment piece 521. The attachment 42 is attached to the protector attachment piece 521 using this fixing hole 521a. In other words, the wiring protector 40 is fixed to the protector attachment piece 521 using this fixing hole 521a.

[0037] 4 is a diagram (plan view) showing the arrangement of the rail frame, pulley bracket, and first bracket as viewed from the vertical direction, in which the bolt 29 described above is omitted. 4, the second fixed piece 512 of the first bracket 51 overlaps the first fixed piece 231 of the pulley bracket 23 except for the portion of the adjustment margin Lx. The second fixed piece 512 is disposed so as to overlap at least a portion of the first fixed piece 231. Furthermore, the first fixed piece 231 contacts the upper surface of the plate-shaped portion 152, and the second fixed piece 512 contacts the lower surface of the plate-shaped portion 152. In other words, the first fixed piece 231 and the second fixed piece 512 overlap with the plate-shaped portion 152 sandwiched therebetween.

[0038] The end of the plate-shaped portion 152 on the door pocket side is exposed to the outside at an adjustment margin Lx. The adjustment margin Lx is a dimension secured at the end of the rail frame 15 on the door pocket side in order to adjust the mounting position of the pulley bracket 23 in the X direction. By securing this adjustment margin Lx, the pulley bracket 23 can be moved to one side (door pocket side) or the other side (door stop side) in the X direction on the plate-shaped portion 152. In other words, the mounting position of the pulley bracket 23 relative to the rail frame 15 can be adjusted in the X direction. The mounting position of the pulley bracket 23 is adjusted in order to adjust the tension of the drive belt 20.

[0039] The pulley bracket 23 has two bracket fixing holes 231a spaced apart in the X direction. The bracket fixing holes 231a are holes for fixing the first fixing piece 231 to the rail frame 15. The bracket fixing holes 231a are elongated holes that are long in the X direction, which is the longitudinal direction of the rail frame 15. In contrast, the plate-shaped portion 152 of the rail frame 15 has through holes 152a for fixing the pulley bracket 23 and the first bracket 51. Two through holes 152a are provided at the same interval as the bracket fixing holes 231a described above. The through holes 152a are formed in a circular shape when viewed in the vertical direction.

[0040] The inner diameter of the through hole 152a is set to be slightly larger than the outer diameter of the threaded portion of the bolt 29 described above. The inner diameter of the through hole 152a is set to be approximately the same as the hole dimension in the minor axis direction of the bracket fixing hole 231a. Therefore, when the threaded portion of the bolt 29 is inserted into the through hole 152a of the plate-shaped portion 152 through the bracket fixing hole 231a of the second fixed piece 512, movement of the second fixed piece 512 in the Y direction in FIG. 4 is restricted. Movement of the second fixed piece 512 in the X direction is guided by the threaded portion of the bolt 29.

[0041] Although not shown in Figure 4, the second fixed piece 512 of the first bracket 51 has a through hole 512a (see Figure 5) with the same inner diameter and positional relationship as the above-mentioned through hole 152a, and the threaded portion of the bolt 29 is also inserted into this through hole 512a.

[0042] Next, the connection structure between the first bracket 51 and the second bracket 52 will be described in detail with reference to FIG. As shown in FIG. 5, the first connecting piece 511 of the first bracket 51 and the second connecting piece 522 of the second bracket 52 overlap in the vertical direction (the depth direction in FIG. 5). Specifically, as shown in FIG. 2 above, the second connecting piece 522 is placed on top of the first connecting piece 511. The first connecting piece 511 has two screw holes 511a as first connecting holes. The second connecting piece 522 has two elongated holes 522a as second connecting holes. The threaded portion of the bolt 38 (FIG. 2) described above passes through the elongated hole 522a of the second connecting piece 522 and engages with the screw hole 511a of the first connecting piece 511. The first connecting piece 511 and the second connecting piece 522 are connected by the tightening force of the bolt 38.

[0043] Furthermore, the elongated hole 522a serving as the second connecting hole is an elongated hole that is long in the Y direction parallel to the axial direction of the driven pulley 22. Therefore, when the bolt 38 is loosened, the mounting position of the second bracket 52 relative to the first bracket 51 can be adjusted in the longitudinal direction (Y direction) of the second connecting piece 522. This makes it possible to adjust the mounting position of the second bracket 52 so that, for example, the wire protector 40 does not interfere with (contact) the car door 12a when opening or closing the car doors 12a, 12b.

[0044] 6, when both the pulley bracket 23 and the protector mounting bracket 50A are fixed to the upper surface of the plate-shaped portion 152 of the rail frame 15, it is necessary to secure a space Ls for fixing the protector mounting bracket 50A in addition to the above-mentioned adjustment margin Lx at the end of the rail frame 15 on the door pocket side. This increases the longitudinal dimension (dimension in the X direction) of the rail frame 15.

[0045] In contrast, in this embodiment, the first fixed piece 231 and the second fixed piece 512 are arranged to overlap when viewed vertically. Therefore, it is not necessary to ensure a space Ls for fixing the protector mounting bracket 50A on the same plane as the upper surface of the plate-shaped portion 152 to which the first fixed piece 231 is fixed. Therefore, the longitudinal dimension of the rail frame 15 can be made smaller than in the configuration shown in FIG.

[0046] Furthermore, in this embodiment, the first fixed piece 231 and the second fixed piece 512 are fastened together to the rail frame 15. This simplifies the installation work of the protector mounting bracket 50 compared to when the first fixed piece 231 and the second fixed piece 512 are fixed separately.

[0047] In this embodiment, the protector mounting bracket 50 is made up of a first bracket 51 and a second bracket 52, and the first fixed piece 231 and the second fixed piece 512 are connected at a position lower than the fixed position of the second fixed piece 512 relative to the rail frame 15. This makes it possible to connect the first bracket 51 and the second bracket 52 while avoiding interference with peripheral components such as the driven pulley 22.

[0048] In this embodiment, the first connecting piece 511 and the second connecting piece 522 are each arranged horizontally, and the second bracket 52 is supported with the second connecting piece 522 placed on the first connecting piece 511. This allows the second bracket 52 to be supported by the first bracket 51 when attaching the second bracket 52 in a narrow space where the door pocket 13 is present. This makes it easy to install the bolt 38.

[0049] In this embodiment, the first bracket 51 is Z-shaped when viewed from the X direction, which is the longitudinal direction of the rail frame 15, and the second bracket 52 is inverted L-shaped when viewed from the X direction. This allows the second connecting piece 522 of the second bracket 52 to be placed on the first connecting piece 511 of the first bracket 51 while avoiding interference with peripheral components such as the driven pulley 22.

[0050] In this embodiment, the first fixed piece 231 is fixed to the upper surface of the plate-shaped portion 152, and the second fixed piece 512 is fixed to the lower surface of the plate-shaped portion 152. This makes it possible to adjust the attachment position of the pulley bracket 23 while avoiding interference with the first bracket 51.

[0051] In addition, in this embodiment, the bracket fixing hole 231a for fixing the first fixed piece 231 to the rail frame 15 is an elongated hole that is long in the longitudinal direction (X direction) of the rail frame 15. This makes it possible to adjust the attachment position of the pulley bracket 23 relative to the rail frame 15 in the long axis direction of the bracket fixing hole 231a.

[0052] In this embodiment, a screw hole 511a serving as a first connection hole is provided in the first connection piece 511, and the first connection piece 511 and the second connection piece 522 are connected by a bolt 38 that engages with the screw hole 511a. This allows the first connection piece 511 and the second connection piece 522 to be firmly connected by tightening the bolt 38.

[0053] In this embodiment, the second connecting piece 522 is provided with an elongated hole 522a as a second connecting hole, and this elongated hole 522a is an elongated hole that is long in the axial direction (Y direction) of the driven pulley 22. This makes it possible to adjust the attachment position of the second bracket 52 relative to the first bracket 51 in the long axial direction of the elongated hole 522a as the second connecting hole.

[0054] 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.

Claims

1. a rail frame to which a rail member that guides the movement of the car door is attached; a pulley bracket having a first fixed piece fixed to the rail frame and a pulley mounting piece to which a driven pulley that rotates by receiving a driving force from a drive motor for opening and closing the car door is attached; a protector mounting bracket including: a second fixed piece that is fixed to the rail frame so as to overlap at least a portion of the first fixed piece of the pulley bracket when viewed in the vertical direction; and a protector mounting piece to which a wiring protector that protects wiring connected to a pinch prevention detection device attached to the car door is attached; An elevator door device comprising:

2. The first fixed piece and the second fixed piece are fastened together to the rail frame.

2. The elevator door apparatus according to claim 1.

3. the protector mounting bracket is composed of a first bracket having the second fixing piece and the first connecting piece, and a second bracket having the protector mounting piece and the second connecting piece, The first connecting piece and the second connecting piece are connected to each other at a position lower than a fixed position of the second fixed piece relative to the rail frame.

2. The elevator door apparatus according to claim 1.

4. the first connecting piece and the second connecting piece are each horizontally disposed, The second bracket is supported with the second connecting piece placed on the first connecting piece.

4. The elevator door apparatus according to claim 3.

5. the first bracket is Z-shaped when viewed from the longitudinal direction of the rail frame, The second bracket has an inverted L-shape when viewed from the longitudinal direction of the rail frame.

4. The elevator door apparatus according to claim 3.

6. the rail frame has a plate-shaped portion to which the first fixed piece and the second fixed piece are fixed, the first fixed piece is fixed to an upper surface of the plate-shaped portion, The second fixed piece is fixed to the lower surface of the plate-like portion.

2. The elevator door apparatus according to claim 1.

7. The first fixed piece has a bracket fixing hole for fixing the first fixed piece to the rail frame, and the bracket fixing hole is an elongated hole that is long in the longitudinal direction of the rail frame.

2. The elevator door apparatus according to claim 1.

8. the first connecting piece has a first connecting hole for connecting the first connecting piece and the second connecting piece, and the first connecting hole is a screw hole; The first connecting piece and the second connecting piece are connected by a bolt that engages with the screw hole.

4. The elevator door apparatus according to claim 3.

9. The second connecting piece has a second connecting hole for connecting the first connecting piece and the second connecting piece, and the second connecting hole is an elongated hole that is long in the axial direction of the driven pulley.

9. The elevator door apparatus according to claim 8.

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