Elevator door device

Abstract

To provide an elevator door device capable of preventing adhesion of abrasion powder of an endless belt to a door rail and a roller of a door part.SOLUTION: The present invention includes: a door rail extending in an opening / closing direction of a door panel; a door part having a door panel and a roller and configured to move in an opening / closing direction by the roller rolling on the door rail; and a door drive part configured to drive the door part. The door drive part includes: a motor part having a drive pulley and configured to drive and rotate the drive pulley; a driven pulley which is disposed spaced apart from the drive pulley in the opening / closing direction; and an endless belt that is wound around the drive pulley and the driven pulley, and to which the door part is connected. The drive pulley is disposed on a position which is located above the door rail when viewed from a rotation axis direction of the roller and offset in the rotation axis direction relative to the door rail when viewed in the opening / closing direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

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

[0002] 2. Description of the Related Art Conventionally, elevator door devices that are arranged at the entrance and exit of a car or the like have been known (see Patent Document 1). As shown in FIG. 6, this door device 100 comprises a door rail 101 attached to a frame 100b arranged above the car entrance 100a and extending in the opening and closing direction of the car entrance 100a, a door section 102 that opens and closes along the door rail 101, and a door drive section 105 that drives the door section 102 to open and close.

[0003] The door section 102 includes a door hanger 103 having a roller 103 a that moves in the opening and closing direction as the roller 103 a rolls on the door rail 101 , and a door panel 104 that is hung from the door hanger 103 .

[0004] The door drive unit 105 also has a motor 107 having a drive pulley 106, a driven pulley 108 arranged at an interval in the opening / closing direction from the drive pulley 106, and an endless belt 109 wound around the drive pulley 106 and the driven pulley 108. The drive pulley 106 and the driven pulley 108 are arranged above the door rail 101 so as to be located on both sides of the car entrance 100a in the opening / closing direction.

[0005] The door hanger 103 is connected to an endless belt 109, and when the belt 109 is rotated by a motor 107, the door portion 102 moves in the opening and closing direction. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] International Publication No. 2020 / 084679 Summary of the Invention [Problem to be solved by the invention]

[0007] In the above door device 100, the door rail 101 is disposed below the drive pulley 106, and when the door part 102 is opened or closed, the roller 103a of the door part 102 rolls on the door rail 101. At this time, the belt 109 is worn at the contact portion between the belt 109 and the drive pulley 106 due to the rotational driving force of the motor 107, and wear powder adheres to the door rail 101 and the roller 103a, which may make it difficult for the door part 102 to move along the door rail 101 to open or close.

[0008] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide an elevator door device that prevents wear powder from the endless belt from adhering to the door rail and rollers of the door section. [Means for solving the problem]

[0009] The elevator door device according to the present invention comprises: An elevator door device, comprising: A door rail extending in the opening and closing direction of the door panel; a door section including the door panel and a roller rotatable about a rotation axis perpendicular to the opening / closing direction and extending in a horizontal direction, the roller rolling on the door rail to move in the opening / closing direction; a door driving unit that drives the door unit in the opening / closing direction, The door drive unit is A motor unit having a drive pulley and rotating the drive pulley; a driven pulley disposed at an interval in the opening / closing direction relative to the driving pulley; an endless belt that is wound around the drive pulley and the driven pulley and to which the door part is connected; The drive pulley is disposed above the door rail when viewed in the direction of the rotation axis of the roller and at a position offset in the direction of the rotation axis with respect to the door rail when viewed in the opening and closing direction.

[0010] In this way, by shifting the drive pulley in the direction of the rotation axis relative to the door rail when viewed from the opening and closing direction, wear powder that falls from the endless belt (the portion wrapped around the drive pulley and its vicinity) is prevented from adhering to the door rail and roller.

[0011] The elevator door device includes: a frame member having a first portion extending in a plane perpendicular to the rotation axis direction, The door rail is disposed on one surface of the first portion in the rotation axis direction, the drive pulley is located on the other side in the rotation axis direction with respect to the first portion, An upper end of the first portion may be located above the roller and below the drive pulley.

[0012] According to this configuration, wear powder that has fallen from the endless belt is prevented by the first portion of the frame member from heading toward the door rail and roller, further reducing adhesion of wear powder to the door rail and roller.

[0013] In addition, in the elevator door device, The frame member may have a second portion extending from an upper end of the first portion to one side in the rotation axis direction and extending in the opening and closing direction.

[0014] In this way, since the second section extends from the upper end of the first section to one side in the direction of the rotation axis (the door rail side), wear powder that has fallen from the endless belt is more effectively prevented from heading toward the door rail and roller, thereby more effectively preventing wear powder from adhering to the door rail and roller.

[0015] In addition, in the elevator door device, the motor unit includes a motor having a drive shaft that rotates the drive pulley, The motor and the drive pulley may be arranged in order in the direction of the rotation axis from the door rail to the drive pulley.

[0016] According to this configuration, the motor also prevents wear powder that has fallen from the endless belt from heading toward the door rail and roller, thereby more effectively preventing wear powder from adhering to the door rail and roller.

[0017] In addition, in the elevator door device, the drive pulley is disposed on the other side of the roller in the rotation axis direction, The door portion is The door panel; a door hanger having the roller and suspending the door panel; a bracket for connecting the door hanger to the endless belt; The bracket is a vertical portion extending upward from the door hanger on one side of the roller in the rotation axis direction; The endless belt may have an extended portion extending along the rotation axis direction from the vertical portion to the endless belt.

[0018] In this way, by positioning the vertical portion of the bracket on one side of the roller in the direction of the rotational axis, the distance between the vertical portion in the direction of the rotational axis and the endless belt and drive pulley is secured, thereby also suppressing the adhesion of wear powder to the bracket (vertical portion). Effect of the Invention

[0019] As described above, according to the present invention, it is possible to provide an elevator door device that suppresses adhesion of wear powder from the endless belt to the door rail and rollers of the door portion. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a schematic diagram showing the configuration of an elevator door device according to this embodiment as viewed from the entrance / exit direction. [Diagram 2] FIG. 2 is a diagram showing the configuration of the door drive unit and its surroundings as viewed from the opening and closing direction. [Diagram 3] FIG. 3 is a diagram showing the door drive unit and its surrounding structure as viewed from the opening / closing direction at a position corresponding to the first bracket. [Figure 4] FIG. 4 is a diagram showing a configuration of a door drive unit and its surroundings according to another embodiment as viewed from the opening and closing direction. [Diagram 5] FIG. 5 is a diagram showing a configuration of a door drive unit and its surroundings according to another embodiment as viewed from the opening and closing direction. [Figure 6] FIG. 6 is a schematic diagram showing the configuration of a conventional elevator door device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, one embodiment of the present invention will be described with reference to FIGS.

[0022] As shown in Fig. 1, an elevator door device according to this embodiment (hereinafter also simply referred to as "door device") is disposed at an opening (car entrance) 12 of an elevator car body 11, and opens and closes the opening 12. Thus, the elevator car 10 of this embodiment includes the car body 11 and the door device 1.

[0023] Specifically, the door device 1 includes a frame member 2 arranged above an opening 12 in a car body 11. The door device 1 also includes a door rail 3 extending in the opening / closing direction of the opening 12 (left and right direction in FIG. 1), a door section 4 having a first roller (roller) 421 that moves in the opening / closing direction as the first roller 421 rolls on the door rail 3, and a door drive section 5 that drives the door section 4 to open and close. The door device 1 of this embodiment is a so-called center-opening door device that includes two door sections 4 and opens and closes the opening 12 by moving the door sections 4 closer to or away from each other in the opening / closing direction.

[0024] The frame member 2 extends in the opening / closing direction above the opening 12. Specifically, as shown in Figs. 2 and 3, the frame member 2 has a first portion 21 that extends in a plane direction perpendicular to the entrance / exit direction of the opening 12 (left / right direction in Fig. 2). The frame member 2 also has a second portion 22 that extends from an upper end of the first portion 21 to one side in the entrance / exit direction (left side in Fig. 2) and also extends in the opening / closing direction. The frame member 2 in this embodiment is formed by bending the upper end of a band-shaped member that extends in the opening / closing direction. This frame member 2 is attached above the opening 12 in the car body 11 via an attachment member 13.

[0025] Specifically, the first portion 21 is a rectangular plate-like portion that is long in the opening / closing direction. The dimension of the first portion 21 in the opening / closing direction is greater than the dimension of the car body 11 in the opening / closing direction.

[0026] The second portion 22 is a strip-like portion that is long in the opening / closing direction and extends continuously from one end to the other end of the first portion 21 in the opening / closing direction. In the second portion 22 of this embodiment, the dimension in the insertion / retraction direction at each position in the opening / closing direction is the same.

[0027] The door rail 3 is disposed on a surface 21a on one side of the first portion 21 in the entrance / exit direction (the side opposite to the car body 11 side).

[0028] Each of the two door sections 4 has a door panel 41, a door hanger 42 having a first roller (roller) 421 and suspending the door panel 41, and a first bracket 43 connecting the door hanger 42 to the door drive section 5.

[0029] The door panel 41 is a panel member that extends in a plane direction perpendicular to the entry / exit direction, and has a rectangular plate shape that is long in the vertical direction.

[0030] The door hanger 42 has a hanger body 420 to which the door panel 41 is connected, a first roller 421 that is disposed on the hanger body 420 and rolls on the door rail 3, and a second roller 422 that is disposed on the hanger body 420 and rolls while abutting against the door rail 3 from below. The door hanger 42 of this embodiment has two first rollers 421 and one second roller 422.

[0031] The hanger body 420 is a plate-like portion that is connected to the upper end of the door panel 41 and extends upward from the upper end. The hanger body 420 of this embodiment has a rectangular shape that is elongated in the opening and closing direction.

[0032] Each of the two first rollers 421 is disposed on the hanger body 420 so as to be rotatable about a first rotation axis (rotation axis) 421a extending in the entry / exit direction (i.e., perpendicular to the opening / closing direction and horizontal). These two first rollers 421 are disposed on the hanger body 420 with an interval therebetween in the opening / closing direction and each of them abuts against the door rail 3 from above.

[0033] The second roller 422 is disposed in the hanger body 420 so as to be rotatable about a second rotation shaft 422a extending in the entry / exit direction. The second roller 422 is disposed in the hanger body 420 in a state in which the second roller 422 abuts against the door rail 3 from below so as to sandwich the door rail 3 between the first roller 421 and the second roller 422 in the vertical direction.

[0034] The first bracket 43 is a member extending upward from the hanger body 420, and a tip of the first bracket 43 is connected to the endless belt 55 of the door drive unit 5.

[0035] Specifically, the first bracket 43 has a vertical portion 431 extending upward from the door hanger 42 on one side of the first roller 421 in the entry / exit direction, and an extension portion 432 extending from the vertical portion 431 to the endless belt 55 along the entry / exit direction.

[0036] The vertical portion 431 is a plate-like portion that extends upward from the hanger body 420 to a corresponding portion of the endless belt 55 (the upper portion or the lower portion).

[0037] The extended portion 432 is a plate-shaped portion extending from the upper end of the vertical portion 431 to the other side in the insertion / removal direction, and its tip is connected to the endless belt 55. The extended portion 432 in this embodiment extends to the other side of the frame member 2 (more specifically, the first portion 21) in the insertion / removal direction (see FIG. 3).

[0038] The door drive unit 5 has a drive pulley 51, a motor unit 50 that rotates and drives the drive pulley 51, a driven pulley 54 that is arranged at a distance from the drive pulley 51 in the opening and closing direction, and an endless belt 55 that is wound around the drive pulley 51 and the driven pulley 54.

[0039] The motor unit 50 is a drive source for moving the door unit 4 in the opening and closing direction, and specifically includes a drive pulley 51 and a motor 53 having a drive shaft 52 for rotating the drive pulley 51. The drive shaft 52 extends in the opening and closing direction, and the motor 53 drives and rotates the drive shaft 52. As a result, the drive pulley 51 connected to the drive shaft 52 rotates around the drive shaft 52. The drive pulley 51 in this embodiment is a pulley provided with a plurality of teeth arranged in the circumferential direction on its peripheral edge.

[0040] The motor unit 50 is disposed at the upper end of the frame member 2. The motor unit 50 in this embodiment is attached to the upper end of the frame member 2 (more specifically, the second portion 22) via the second bracket 23. That is, the door device 1 in this embodiment also has the second bracket 23 for attaching the motor unit 50 to the frame member 2. The motor unit 50 is also disposed outside the opening 12 in the opening / closing direction (see FIG. 1). In this state, the drive pulley 51 is disposed above the door rail 3 as viewed from the entrance / exit direction (see FIG. 1) and at a position offset in the entrance / exit direction with respect to the door rail 3 as viewed from the opening / closing direction (see FIG. 2).

[0041] Specifically, the motor unit 50 is disposed so that the drive pulley 51 is located on the other side in the entry / exit direction with respect to the first portion 21 of the frame member 2. That is, the drive pulley 51 is disposed on the other side in the entry / exit direction with respect to the door rail 3 and the first roller 421.

[0042] In the motor unit 50 of this embodiment, the motor 53 and the drive pulley 51 are arranged in order on the other side in the entry / exit direction (the direction from the door rail 3 toward the drive pulley 51). That is, the motor 53 is attached to the upper end of the frame member 2 via the second bracket 23 with the drive pulley 51 facing the other side in the entry / exit direction.

[0043] The driven pulley 54 is attached to the upper end of the frame member 2 via the third bracket 24 so as to be rotatable around a rotation axis 54a extending in the inward / outward direction. This driven pulley 54 is also located on the other side of the inward / outward direction with respect to the first portion 21 of the frame member 2, similar to the driving pulley 51. That is, the driven pulley 54 is disposed on the other side of the inward / outward direction with respect to the door rail 3 and the first roller 421. The driven pulley 54 is also disposed at the same position as the driving pulley 51 of the motor unit 50 in the up-down direction. The driven pulley 54 is also disposed on the outside of the opening 12 in the opening / closing direction (the outside opposite to the motor unit 50 (driving pulley 51)). The driven pulley 54 of this embodiment is a pulley provided with a plurality of teeth arranged in the circumferential direction on its peripheral edge, similar to the driving pulley 51.

[0044] The endless belt 55 is wound around the drive pulley 51 and the driven pulley 54 that are spaced apart in the opening / closing direction. In this wound state, the entire area of ​​the endless belt 55 in the opening / closing direction is located above the door rail 3 when viewed from the opening / closing direction (see FIG. 2). Of the parts of the endless belt 55 wound around the drive pulley 51 and the driven pulley 54 that are located between the two pulleys 51 and 54, the first bracket 43 of one of the two door parts 4 is connected to the upper part (upper part), and the first bracket 43 of the other of the two door parts 4 is connected to the lower part (lower part). The endless belt 55 of this embodiment is a toothed belt.

[0045] In the door device 1 configured as described above, the motor 53 of the door drive unit 5 drives and rotates the drive pulley 51 around the drive shaft 52, causing the endless belt 55 wrapped around the drive pulley 51 and the driven pulley 54 to rotate. In other words, the upper and lower parts of the endless belt 55 move in opposite directions in the opening and closing direction, causing the door parts 4 (door panels 41) connected to the upper and lower parts to move away from or approach each other along the door rail 3, resulting in the opening 12 of the car body 11 being opened and closed.

[0046] During opening and closing of the door device 1, the teeth of the endless belt 55 mesh with the teeth of the pulleys 51 and 54, causing wear and generating wear powder at the portions of the endless belt 55 corresponding to the pulleys 51 and 54. In particular, the amount of wear powder generated at the portion of the endless belt 55 corresponding to the drive pulley 51 is significant because this is the portion to which the rotational driving force from the motor 53 is transmitted. The wear powder generated from the endless belt 55 in this manner falls downward.

[0047] In this case, the door device 1 of this embodiment is an elevator door device 1, and includes a door rail 3 extending in the opening and closing direction of a door panel 41, the door panel 41, and a first roller (roller) 421 that can rotate around a first rotation axis (rotation axis) 421a that is perpendicular to the opening and closing direction and extends horizontally, and the first roller 421 moves in the opening and closing direction as it rolls on the door rail 3, and a door drive unit 5 that drives the door part 4 in the opening and closing direction. The door drive unit 5 has a drive pulley 51, a motor unit 50 that rotates and drives the drive pulley 51, a driven pulley 54 that is spaced apart from the drive pulley 51 in the opening / closing direction, and an endless belt 55 that is wound around the drive pulley 51 and the driven pulley 54 and is connected to the door unit 4, and the drive pulley 51 is disposed above the door rail 3 as viewed from the entrance / exit direction (the direction of the first rotating shaft 421a of the first roller 421) and at a position shifted in the entrance / exit direction with respect to the door rail 3 as viewed from the opening / closing direction (see FIG. 2). In the door device 1 of this embodiment, the pulleys 51, 54 and the endless belt 55 are shifted to the other side in the entrance / exit direction to a position where they do not overlap with the door rail 3 and the first roller 421 in a plan view.

[0048] In this way, when viewed from the opening / closing direction, the drive pulley 51 is shifted in the in / out direction relative to the door rail 3, thereby preventing wear powder that falls from the endless belt 55 (the portion wrapped around the drive pulley 51 and its vicinity) from adhering to the door rail 3 and the first roller 421.

[0049] In the door device 1 of this embodiment, the driven pulley 54 is also disposed above the door rail 3 as viewed from the entrance / exit direction and at a position offset in the entrance / exit direction with respect to the door rail 3 as viewed from the opening / closing direction. This also prevents wear powder that falls from the endless belt 55 (the portion wrapped around the driven pulley 54 and its vicinity) from adhering to the door rail 3 and the first roller 421.

[0050] Furthermore, in the door device 1 of this embodiment, the entire endless belt 55 is shifted in the inward / outward direction relative to the door rail 3 and the first roller 421 when viewed from the opening / closing direction. This also prevents wear powder that falls from the endless belt 55 at positions where the pulleys 51 and 54 are not present from adhering to the door rail 3 and the first roller 421.

[0051] In the door device 1 of this embodiment, the pulleys 51, 54 and the endless belt 55 are also shifted in the inward / outward direction with respect to the second roller 422 when viewed from the opening / closing direction. This also prevents wear powder that has fallen from the endless belt 55 from adhering to the second roller 422.

[0052] The door device 1 of this embodiment includes a frame member 2 having a first portion 21 extending in a plane direction perpendicular to the entry / exit direction (direction of the first rotation shaft 421a). The door rail 3 is disposed on a surface 21a on one side of the first portion 21 in the entry / exit direction, and the drive pulley 51 is located on the other side of the first portion 21 in the entry / exit direction. The upper end of the first portion 21 is located above the first roller (roller) 421 and below the drive pulley 51.

[0053] According to this configuration, wear powder that has fallen from the endless belt 55 is prevented by the first part 21 of the frame member 2 from heading toward the door rail 3 and the first roller 421, thereby further reducing adhesion of wear powder to the door rail 3 and the first roller 421.

[0054] Furthermore, in the door device 1 of this embodiment, the frame member 2 has the second portion 22 that extends from the upper end of the first portion 21 to one side in the entry / exit direction (the direction of the first rotation shaft 421a) and also extends in the opening / closing direction. In this way, since the second portion 22 extends from the upper end of the first portion 21 to one side in the entry / exit direction (the door rail 3 side), wear powder that has fallen from the endless belt 55 is more effectively prevented from heading toward the door rail 3 and the first roller 421, and thus adhesion of wear powder to the door rail 3 and the first roller 421 is more effectively suppressed.

[0055] Moreover, in the door device 1 of this embodiment, the motor section 50 has a motor 53 having a drive shaft 52 that rotates the drive pulley 51, and the motor 53 and the drive pulley 51 are arranged in sequence in a direction from the door rail 3 toward the drive pulley 51 in the entry / exit direction (the direction of the first rotation shaft 421a). Therefore, the motor 53 also prevents wear powder that has fallen from the endless belt 55 from moving toward the door rail 3 and the first roller 421, and this more effectively suppresses adhesion of wear powder to the door rail 3 and the first roller 421.

[0056] In the door device 1 of this embodiment, the drive pulley 51 is disposed on the other side of the first roller (roller) 421 in the entry / exit direction (direction of the first rotating shaft 421a). The door section 4 has a door panel 41, a door hanger 42 having the first roller (roller) 421 and suspending the door panel 41, and a first bracket (bracket) 43 connecting the door hanger 42 to the endless belt 55, and the first bracket 43 has a vertical portion 431 extending upward from the door hanger 42 on one side of the first roller 421 in the entry / exit direction, and an extension portion 432 extending from the vertical portion 431 to the endless belt 55 along the entry / exit direction. In this way, by positioning the vertical portion 431 of the first bracket 43 on one side of the first roller 421 in the in / out direction, the distance between the vertical portion 431 in the in / out direction and the endless belt 55 and the drive pulley 51 is secured, thereby suppressing the adhesion of wear powder to the first bracket 43 (more specifically, the vertical portion 431).

[0057] It should be noted that the elevator door device of the present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the scope of the present invention. For example, the configuration of one embodiment can be added to the configuration of another embodiment, or part of the configuration of one embodiment can be replaced with the configuration of another embodiment. Furthermore, part of the configuration of one embodiment can be deleted.

[0058] The door device 1 in the above embodiment is disposed on the car body 11 so as to open and close the opening 12 of the car body 11, but is not limited to this configuration. The door device 1 may be disposed on an opening of a landing (i.e., an opening that communicates between the landing and the elevator shaft) and may open and close the opening.

[0059] Further, the door device 1 in the above embodiment is a so-called center-opening type, but is not limited to this configuration. The door device 1 may be a so-called single-opening type.

[0060] In the door device 1 of the above embodiment, the pulleys 51, 54 and the endless belt 55 are disposed at positions shifted toward the other side in the entry / exit direction (toward the car body 11) relative to the door rail 3 and the first roller 421 when viewed from the opening / closing direction, but are not limited to this configuration. The pulleys 51, 54 and the endless belt 55 may be disposed at positions shifted toward one side in the entry / exit direction (the side opposite to the car body 11) relative to the door rail 3 and the first roller 421 when viewed from the opening / closing direction (see FIG. 4).

[0061] In the door device 1 of the above embodiment, the motor unit 50 is arranged such that the motor 53 and the drive pulley 51 are aligned in order toward the other side in the entry / exit direction, but the present invention is not limited to this configuration. The motor unit 50 may be arranged such that the motor 53 and the drive pulley 51 are aligned in order toward one side in the entry / exit direction, as shown in FIG.

[0062] In the door device 1 of the above embodiment, the endless belt 55 is a toothed belt, but is not limited to this configuration. The endless belt 55 may be another type of belt, such as a V-belt. [Explanation of symbols]

[0063] 1...elevator door device, 2...frame member, 21...first portion, 21a...one side surface, 22...second portion, 23...second bracket, 24...third bracket, 3...door rail, 4...door portion, 41...door panel, 42...door hanger, 420...hanger body, 421...first roller (roller), 421a...first rotating shaft (rotating shaft), 422...second roller, 422a...second rotating shaft, 43...first bracket, 431...vertical portion, 432...extended portion, 5...door drive portion, 50... Motor section, 51...driving pulley, 52...driving shaft, 53...motor, 54...driven pulley, 54a...rotating shaft, 55...endless belt, 10...car, 11...car body, 12...opening, 13...mounting member, 100...door device, 100a...car entrance / exit, 100b...frame, 101...door rail, 102...door section, 103...door hanger, 103a...roller, 104...door panel, 105...door drive section, 106...driving pulley, 107...motor, 108...driven pulley, 109...belt

Claims

1. An elevator door device, comprising: A door rail extending in the opening and closing direction of the door panel; a door section including the door panel and a roller rotatable about a rotation axis perpendicular to the opening / closing direction and extending in a horizontal direction, the roller rolling on the door rail to move in the opening / closing direction; a door driving unit that drives the door unit in the opening / closing direction, The door drive unit is A motor unit having a drive pulley and rotating the drive pulley; a driven pulley disposed at an interval in the opening / closing direction relative to the driving pulley; an endless belt that is wound around the drive pulley and the driven pulley and to which the door part is connected; The drive pulley is disposed above the door rail when viewed from the direction of the rotation axis of the roller and at a position offset in the direction of the rotation axis from the door rail when viewed from the opening and closing direction.

2. a frame member having a first portion extending in a plane perpendicular to the rotation axis direction, The door rail is disposed on one surface of the first portion in the rotation axis direction, the drive pulley is located on the other side in the rotation axis direction with respect to the first portion, 2. The elevator door apparatus according to claim 1, wherein an upper end of the first portion is located above the roller and below the drive pulley.

3. 3. The elevator door apparatus according to claim 2, wherein the frame member has a second portion extending from an upper end of the first portion to one side in the rotation axis direction and extending in the opening and closing direction.

4. the motor unit includes a motor having a drive shaft that rotates the drive pulley, 3. The elevator door device according to claim 1, wherein the motor and the drive pulley are arranged in order in a direction from the door rail toward the drive pulley in the rotation axis direction.

5. the drive pulley is disposed on the other side of the roller in the rotation axis direction, The door portion is The door panel; a door hanger having the roller and suspending the door panel; a bracket for connecting the door hanger to the endless belt; The bracket is a vertical portion extending upward from the door hanger on one side of the roller in the rotation axis direction; 3. The elevator door device according to claim 1, further comprising: an extension portion extending from the vertical portion to the endless belt along the rotation axis direction.

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