CN112875473A

CN112875473A - Door device of elevator

Info

Publication number: CN112875473A
Application number: CN202011350866.7A
Authority: CN
Inventors: 塙直人
Original assignee: Toshiba Elevator Co Ltd
Current assignee: Toshiba Elevator and Building Systems Corp
Priority date: 2019-11-29
Filing date: 2020-11-26
Publication date: 2021-06-01
Anticipated expiration: 2040-11-26
Also published as: JP6818857B1; JP2021084802A; CN112875473B

Abstract

The invention can eliminate the position deviation to efficiently install the door top box, and can install the door top box even under the condition of less working space. According to one embodiment, a door device of the present invention includes: a bracket (22) for fixing the door top box (14) to the wall surface of the doorway; and at least two sets of fastening members for fixing the door top box to the bracket, wherein at least two parallel first long holes (24) are formed in one of the upper end portions of the door top box and a mounting portion (26) of the bracket overlapped with the upper end portion, a second long hole (27) orthogonal to the first long hole is formed in the other, the fastening members are inserted into the first long hole and the second long hole and fastened, and at least one set of fastening members constitutes a direction fixing portion for fixing the door top box so that only the position in the length direction of one long hole of the first long hole and the second long hole is fixed and the position in the length direction of the other long hole is adjustable.

Description

Door device of elevator

Technical Field

An embodiment of the present invention relates to a door device of an elevator.

Background

The entrance and exit of the elevator are opened and closed by a door device. Generally, in such a door apparatus, a door panel is suspended by a door hanger that engages with a door rail mounted to a door top box (header case) via a roller. A door sill is arranged on the floor of the entrance and exit of the elevator waiting hall, and a guide shoe (guide shoe) arranged at the lower end of a door plate is clamped with a groove of the door sill.

Generally, the door top box is fixed using an L-shaped bracket fixed to an installation target portion on the main body side of the building. Conventionally, a long hole for fixing is formed in each of the upper surface of the door top case and the L-shaped bracket, and the door top case is fixed while adjusting the position of the door top case by a fastening member such as a bolt or a nut.

In the position adjustment when the door top box is mounted, adjustment in two directions, that is, the left-right direction and the front-back direction, is required. Therefore, the long hole for fixing formed in the bracket intersects with the long hole for fixing on the upper surface of the door top case at right angles.

Various techniques have been proposed for positioning adjustment in door top box attachment work of a door device, and examples thereof include patent document 1 in which positioning adjustment is performed independently, and patent document 2 in which a bracket is adjusted in accordance with an angle of a body wall surface.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 2588088

Patent document 2: japanese patent No. 4861697

Disclosure of Invention

Problems to be solved by the invention

However, in the case of the above-described fixing structure in which the long hole of the bracket is orthogonal to the long hole of the door top case, the door top case can be moved in any direction of the left and right, and the front and rear, in a state where the bolt and the nut are loosened. For example, when the operator attempts to perform positioning in the left-right direction of the door top box, the position tends to shift in the front-rear direction. Therefore, a skilled skill is required in the work of attaching the door top case.

Further, depending on the structure of the main body, there is a problem that a working space for easily fastening the bolt and the nut cannot be secured.

The present invention has been made in view of the problems of the conventional techniques, and an object of the present invention is to provide an elevator door apparatus capable of eliminating positional deviation to efficiently install a door top box and capable of installing the door top box even when a working space is small.

Means for solving the problems

In order to achieve the above object, an elevator door device according to an embodiment of the present invention includes

A door top box, a door guide provided in the door top box, a door hanger engaged with the door guide via a roller, and a door panel suspended from the door hanger, wherein the elevator door device includes:

a bracket for fixing the door top box to a wall surface of the doorway; and

at least two or more sets of fastening members for fixing the door top case to the bracket,

at least two parallel first long holes are formed on one side of an upper end portion of the door top case and a mounting portion of the bracket overlapped with the upper end portion, and a second long hole orthogonal to the first long hole is formed on the other side,

the fastening member is inserted through the first long hole and the second long hole and fastened,

at least one of the fastening members constitutes a direction fixing portion that fixes the door top case so that only a longitudinal position of one of the first and second elongated holes is fixed and a longitudinal position of the other elongated hole is adjustable.

Drawings

Fig. 1A to 1C are views showing a door device of an elevator according to a first embodiment of the present invention, in which fig. 1A is a front view showing the door device from a hoistway side, fig. 1B is a cross section IB-IB in fig. 1A, and fig. 1C is a cross section IC-IC in fig. 1A.

Fig. 2 is an exploded perspective view of a fastening structure of a bracket and a door top box in the first embodiment.

Fig. 3 is a view showing a section III-III in fig. 2.

Fig. 4 is an exploded perspective view of a fastening structure of a bracket and a door top box according to modification 1 of the first embodiment.

Fig. 5 is an exploded perspective view of a fastening structure of a bracket and a door top box according to modification 2 of the first embodiment.

Fig. 6 is an exploded perspective view of a fastening structure of a bracket and a door top box according to modification 3 of the first embodiment.

Fig. 7 is an exploded perspective view of a fastening structure of a bracket and a door top box in the second embodiment.

Fig. 8 is a view showing a section VIII-VIII in fig. 7.

Fig. 9 is an exploded perspective view of a fastening structure of a bracket and a door top box in the third embodiment.

Fig. 10 is a view showing an X-X section in fig. 9.

Fig. 11A and 11B are diagrams showing an example of the state of the main body to which the door top box is attached.

Fig. 12 is an exploded perspective view of a fastening structure of a bracket and a door top box in the fourth embodiment.

Fig. 13 is a view showing a section XIII-XIII in fig. 12.

Detailed Description

Hereinafter, an embodiment of an elevator door apparatus according to the present invention will be described with reference to the drawings.

(first embodiment)

Fig. 1A to 1C are views showing an elevator door device according to a first embodiment of the present invention. Fig. 1A is a front view showing a door device from a hoistway side, fig. 1B is a cross section IB-IB in fig. 1A, and fig. 1C is a cross section IC-IC in fig. 1A.

In fig. 1A to 1C, reference numeral 10 denotes the entirety of the gate device. Reference numeral 11 denotes an opening serving as an entrance. In an elevator lobby, a doorway is formed by a door pocket composed of vertical frames 13a, 13b and a horizontal frame 13 c.

The door top box 14 is fastened to the body wall surface above the door pocket using brackets 22. A door rail 16 is horizontally disposed on the door top box 14.

Reference numerals

12A, 12B are door panels of the lobby. Door hangers 15a and 15B are attached to the upper end portions of the

door panels

12A and 12B, respectively. The

door hangers

15a and 15b are provided with rollers 17 that rotate on the door rails 16. The rollers 17 are engaged with the door rail 16, and open and close the

door panels

12A and 12B in a state of being suspended from the door rail 16.

A threshold 19 is arranged on the floor of the entrance of the elevator waiting hall. Guide shoes 20 are attached to lower ends of the

door panels

12A and 12B, and the guide shoes 20 engage with grooves formed in the longitudinal direction of the doorsill 19.

In the present embodiment, when defining the direction, the left-right direction refers to a left-right direction from the hoistway side toward the

door panels

12A and 12B, and the front-back direction refers to a front-back direction from the hoistway side toward the

door panels

12A and 12B.

In the door device of the present embodiment, the following fastening member is used to easily adjust the position of the door top case 14 when the door top case 14 is fixed to the wall surface of the main body.

Fig. 2 is an exploded perspective view of the fastening structure of the bracket 22 and the door top case 14 in the first embodiment. Fig. 3 is a view showing a section III-III in fig. 2.

The bracket 22 is a member formed of a metal plate bent in an L-shape. Two vertically

long holes

25a and 25b are formed in the vertical surface of the bracket 22. The bracket 22 is fixed to the wall surface by the fastening member inserted through the

elongated holes

25a and 25 b.

On the other hand, two

long holes

24a and 24b that are long in the front-rear direction are formed in parallel in the horizontal attachment portion 22a of the bracket 22. An upper end portion 26 of the door top case 14 is bent horizontally, and a long hole 27 that is long in the left-right direction is formed in the upper end portion 26. The long hole 27 of the upper end portion 26 of the door top case 14 extends longer in the left-right direction than the interval between the

long holes

24a, 24b of the bracket 22, and the

long holes

24a, 24b intersect the long hole 27 at right angles. The number of the

elongated holes

24a and 24b is not limited to two. Three or more may be used.

As fastening members for fixing the upper end portion 26 of the door top case 14 to the bracket 22,

bolts

28a and 28b and

nuts

29 and 29 are used. The bolt 28a is combined with a cylindrical collar (collar)33, and

washers

31 and 32 are used above and below the collar 33. The other bolt 28b uses only the

washers

31 and 32 without using the collar 33.

When the

long holes

24a and 24b are compared with the long hole 27, the

long holes

24a and 24b have a larger width. The collar 33 has an inner diameter through which the bolt 28a can be inserted, and has an outer diameter smaller than the width (in the short-side direction) of the long hole 24 a. The outer diameter of the retainer 33 is set to be larger than the width (in the short-side direction) of the long hole 27 located below. As shown in fig. 3, the length (in the axial direction) of the retainer 33 is set to be larger than the plate thickness (depth of the long hole 24 a) of the bracket 22.

In the present embodiment, the bolt 28a inserted through the

washers

31, 32 and the collar 33 is inserted into the long hole 24a and the long hole 27, and the nut 29 is tightened. At this time, the upper end of the collar 33 is in a state of protruding upward from the long hole 24a, and a gap can be formed between the washer 32 and the mounting portion 22a of the bracket 22. In this state, the retainer 33 abuts on the upper end portion 26, and the position of the door top case 14 in the left-right direction is fixed, but the position in the front-rear direction is not fixed and can be adjusted. In this way, the bolt 28a, the nut 29, the collar 33, and the

washers

31 and 32 constitute a one-direction fixing portion that fixes only the position of the door top case 14 in the left-right direction.

In this embodiment, the

washers

31 and 32 are used in the one-direction fixing portion, but a bolt with a flange (a bolt whose flange has the same function as the washer, that is, a function of securing a gap between the mounting portion 22a and the flange) may be used, for example, instead of the

washers

31 and 32. Instead of the collar 33 and the washer 32, a flanged shoulder bolt may be used (the step portion has the same function as the collar).

When the bolt 28b is inserted into the elongated hole 24b and the elongated hole 27 and the nut 29 is tightened, the position of the door top case 14 is restricted in both the left-right direction and the front-rear direction.

The door device of an elevator according to the present embodiment is configured as described above, and the following describes the procedure of position adjustment when the door panel is attached.

In fig. 2, first, the bracket 22 is virtually attached to the upper end 26 of the door top case 14. Specifically, the washer 32 and the collar 33 are attached to the bolt 28a, and the bolt 28a is inserted into the long hole 24a and the long hole 27 from above. At this time, the nut 29 is loosely attached together with the washer 31. The washer 32 is also attached to the other bolt 28b, and the long hole 24b and the long hole 27 are inserted from above. At this time, the nut 29 is loosely attached together with the washer 31.

Thereafter, the bracket 22 is fixed to the wall surface of the fixed portion on the main body side. The fixing is performed by fastening Anchor bolts (Anchor bolts), not shown, to the

elongated holes

25a and 25 b.

Next, in order to adjust the position, the position of the door top box 14 is aligned in accordance with the left and right references of the entrance and exit of the lobby, and the nut 29 of the bolt 28a is fastened. The right and left positions of the door top case 14 are fixed by fastening the bolts 28a and the nuts 29 constituting the one-direction fixing portions.

In a state where the nut 29 is fastened to the bolt 28a, as shown in fig. 3, the position along the left-right direction of the door top case 14 of the long hole 27 is restrained by being sandwiched between the

washers

31 and 32. The washer 32 located above the collar 33 is not pressed against the mounting portion 22a of the bracket 22 but remains with a gap. The position of the door top box 14 in the front-rear direction of the long hole 24a is not completely restrained.

By fitting the retainer 33 into the long hole 24a in this manner, even if the nut 29 is tightened, only the position of the door top box 14 in the left-right direction is fixed, and the position can be adjusted in the front-rear direction. After that, after the position of the door top case 14 in the front-rear direction is adjusted and determined, when the remaining nuts 29 are fastened to the bolts 28b, the door top case 14 is completely restrained in both the left-right direction and the front-rear direction, and the mounting is completed.

As described above, according to the present embodiment, since only the position of the door top case 14 in the left-right direction can be fixed by fastening at least one bolt 28a constituting the one-direction fixing portion, the position of the door top case 14 can be adjusted in the left-right direction and the front-rear direction in order, and the fixing can be performed easily.

(modification example)

Next, several modifications of the first embodiment of the present invention will be described with reference to fig. 4 to 6.

Fig. 4 is an exploded perspective view of a fastening structure of a bracket 22 and a door top case 14 according to modification 1 of the first embodiment.

The modification 1 differs from the embodiment of fig. 2 in that the mounting portions 22a of the brackets 22 and the upper end portions 26 of the door top case 14 are respectively provided with elongated holes. In modification 1, the long hole 24 on the bracket 22 side is one and long in the left-right direction, and the long hole on the door top box 14 side is two

long holes

27a and 27b long in the front-rear direction and extending in parallel. The same point as the embodiment of fig. 2 is that one bolt 28a is used together with the collar 33. The width of the elongated hole 24 is larger than the widths of the

elongated holes

27a and 27 b. The outer diameter of the retainer 33 is slightly smaller than the width of the long hole 24 and larger than the width of the long hole 27a, taking into account the play for sliding.

In modification 1 as described above, the bolt 28a, the retainer 33, and the nut 29 constitute a one-direction fixing portion that fixes only the position of the door top case 14 in the front-rear direction. Therefore, the position in the front-rear direction of the door top box 14 is first adjusted and fixed by fastening the nut 29 to the bolt 28a, and then, after the position in the left-right direction is adjusted, the nut 29 is fastened to the bolt 28b, whereby the adjustment and the fixation can be easily performed.

Next, fig. 5 is an exploded perspective view of a fastening structure of the bracket 22 and the door top case 14 in modification 2 of the first embodiment.

This modification 2 differs from the embodiment of fig. 2 in that

bolts

28a, 28b are inserted into the elongated hole 27 and the

elongated holes

24a, 24b from below, and a nut 29 is tightened from above. In modification 2, one bolt 28a is used together with the retainer 33, which is similar to the embodiment of fig. 2. However, the width of the long hole 27 is larger than the widths of the

long holes

24a and 24b, and the outer diameter of the retainer 33 is larger than the width of the long hole 24a and slightly smaller than the width of the long hole 27.

In modification 2 as described above, the bolt 28a, the retainer 33, and the nut 29 constitute a one-direction fixing portion that fixes only the position of the door top case 14 in the front-rear direction. Therefore, first, the nut 29 is fastened to the bolt 28a, and the retainer 33 is brought into contact with the mounting portion 22a, whereby the position of the door top case 14 in the front-rear direction can be adjusted and fixed. Next, after the left-right direction position is adjusted, the nut 29 is fastened to the bolt 28b, and the position adjustment and fixation of the door top box 14 can be easily performed.

Next, fig. 6 is an exploded perspective view of a fastening structure of the bracket 22 and the door top case 14 in modification 3 of the first embodiment.

In this modification, as in modification 1 of fig. 4, the long hole 24 on the bracket 22 side is one long in the left-right direction, and the long hole on the door top case 14 side is two

long holes

27a and 27b long in the front-rear direction and extending in parallel. The same applies to the use of one bolt 28a together with the collar 33.

However, the

bolts

28a and 28b are inserted not from above but from below. The width of the

elongated holes

27a, 27b is larger than the width of the elongated hole 24. The outer diameter of the retainer 33 is slightly smaller than the width of the long hole 27a and larger than the widths of the

long holes

27a and 27 b.

In modification 3 as described above, the bolt 28a, the retainer 33, and the nut 29 constitute a one-direction fixing portion that fixes only the position of the door top case 14 in the left-right direction. Therefore, the position of the door top box 14 in the left-right direction is first adjusted and fixed by fastening the nut 29 to the bolt 28a, and then the position in the front-rear direction is adjusted and thereafter the nut 29 is fastened to the bolt 28b, whereby the position adjustment and the fixing can be easily performed.

(second embodiment)

Next, a second embodiment of the present invention will be described with reference to fig. 7 and 8.

Fig. 7 is an exploded perspective view of a fastening structure of the bracket 22 and the door top case 14 in the second embodiment. Fig. 8 is a view showing a section VIII-VIII in fig. 7.

The first embodiment is an embodiment using the retainer ring 33 as an element of the one-direction fixing portion, but the second embodiment differs in that the nut 36 is used. In fig. 7 and 8 of the second embodiment, the same components as those of the first embodiment of fig. 2 and 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

In fig. 7, nut 36 is used with bolt 28b, unlike bolt 28a, without washer 31. The nut 36 is a nut that can be fitted into the elongated hole 24b on the bracket 22 side, and in this embodiment, the width of the elongated hole 24b is set to a size that is spaced by a gap that allows the width of the opposite side of the nut 36 (the width between the two parallel surfaces of the nut head) to slide. The width of the elongated hole 27 in the upper end portion 26 of the door top case 14 is set to be narrower than the width of the elongated hole 24 b. As shown in fig. 8, nut 36 is held in a state of being placed on upper end 26.

In the present embodiment, when the bolt 28b is inserted into the elongated hole 27 from the lower surface side of the upper end portion 26 of the door top case 14 and the nut 36 inserted into the elongated hole 24a is screwed, the bolt 28b can be screwed without rotating together with the nut 36. In a state where only the bolt 28b is fastened, since only the upper end portion 26 of the door top case 14 is restrained by being sandwiched between the bolt 28b and the nut 36, the position of the door top case 14 in the left-right direction is fixed, but the position in the front-rear direction is not fixed and can be adjusted.

On the other hand, when the nut 29 is fastened to the bolt 28a inserted into the elongated hole 27 and the elongated hole 24a, the position of the door top case 14 is restricted in both the left-right direction and the front-rear direction.

According to the second embodiment as described above, the adjustment and fixation can be easily performed by adjusting the position of the door top case 14 in the left-right direction by fastening the nut 36 to the bolt 28b and fixing the position first, and then fastening the nut 29 to the bolt 28a after adjusting the position in the front-rear direction. This second embodiment is mainly suitable for a bolt screwing operation performed from the lower side and one side. In the second embodiment described above, the modifications as in modification 1 to modification 3 of the first embodiment can be applied, and depending on the situation, the bolt can be screwed from one side of the lower side or one side of the upper side.

(third embodiment)

Next, a third embodiment of the present invention will be described with reference to fig. 9 and 10.

Fig. 9 is an exploded perspective view of a fastening structure of the bracket 22 and the door top case 14 in the third embodiment. Fig. 10 is a view showing an X-X section in fig. 9.

The second embodiment is an embodiment using a nut 36 as an element of the one-direction fixing portion, but the third embodiment differs in that a nut with a plate is used together with the nut 36. In fig. 9 and 10 of the third embodiment, the same components as those of the second embodiment of fig. 7 and 8 are denoted by the same reference numerals, and detailed description thereof is omitted.

In fig. 9, the nut with plate is a nut having an integral structure of a plate 40 and a nut portion 42, and is used together with the bolt 28 a. A circular hole 41 is formed in the plate 40, and the diameter of the circular hole 41 is larger than that of the nut 36. The distance between the nut portion 42 and the circular hole 41 is equal to the distance between the bracket-side

elongated holes

24a and 24 b.

In the third embodiment, the width of the elongated hole 24b is set to a size obtained by adding a gap allowing sliding to the width of the opposite side of the nut 36, and the width of the elongated hole 27 of the upper end portion 26 of the door top case 14 is set to be narrow, which is the same as that of the second embodiment.

In the present embodiment, the bolt 28b is inserted into the elongated hole 27 from the lower surface side of the upper end portion 26 of the door top case 14, and is screwed into the nut 36 that has been inserted into the elongated hole 24 a. The bolt 28b can be screwed without rotating together with the nut 36. In a state where only the bolt 28b is fastened, the position of the door top case 14 in the left-right direction is fixed, but the position in the front-rear direction is not fixed and can be adjusted.

On the other hand, when the nut portion 42 of the plate nut is fastened to the bolt 28a inserted into the elongated hole 27 and the elongated hole 24a, the positions of the door top case 14 in the left-right direction and the front-rear direction are simultaneously restricted.

According to the third embodiment as described above, the adjustment and fixation can be easily performed by adjusting the position of the door top case 14 in the left-right direction by fastening the nut 36 to the bolt 28b and fixing the position first, and then fastening the nut portion 42 to the bolt 28a after adjusting the position in the front-rear direction.

In particular, when the bolt 28a is screwed in, the nut 36 is fitted into the circular hole 41 of the nut with plate and the plate 40 is restrained, so that the nut portion 42 is not rotated together and can be easily fixed.

Here, fig. 11A and 11B are diagrams showing an example of a state in which the main body 50 of the door top case 14 is attached. Fig. 11A shows a state in which the door top case 14 is attached to the wall surface of the main body 50, and fig. 11B shows a state in which the door top case 14 is attached and put into the opening of the main body 50.

In the situation shown in fig. 11A, since there is no member that hinders the work of screwing the

bolts

28a and 28b, the work is easy from both the upper side and the lower side. However, in the situation shown in fig. 11B, there is no working space above the upper end 26 of the door top case 14, and therefore the screw bolts 28a and 28B have to be screwed from the lower side and the one side. In the present embodiment, as described above, the nut portion 42 can be prevented from rotating together, and therefore the bolt 28a can be easily fastened by one-sided operation on the lower side.

(fourth embodiment)

Next, a fourth embodiment of the present invention will be described with reference to fig. 12 and 13.

Fig. 12 is an exploded perspective view of a fastening structure of the bracket 22 and the door top case 14 in the fourth embodiment. Fig. 13 is a view showing a section XIII-XIII in fig. 12.

The fourth embodiment is an embodiment in which a stepped nut is used instead of the plate nut of the third embodiment. In fig. 12 and 13 of the fourth embodiment, the same components as those of the third embodiment of fig. 9 and 10 are denoted by the same reference numerals, and detailed description thereof is omitted.

In fig. 12, a stepped nut 44 is used with bolt 28 a. The stepped nut 44 has an internal thread 45 formed in a nut body having a rectangular shape. A stepped portion 46 is formed on the lower surface of the stepped nut 44, and the stepped portion 46 has a width corresponding to the width of the elongated hole 24a and is fitted into the elongated hole 24 a.

In the present embodiment, the bolt 28b is inserted into the elongated hole 27 from the lower surface side of the upper end portion 26 of the door top case 14, and is screwed into the nut 36 that has been inserted into the elongated hole 24 a. At this time, the bolt 28b can be screwed without rotating together with the nut 36. In a state where only the bolt 28b is fastened, the position of the door top case 14 in the left-right direction is fixed, but the position in the front-rear direction is not fixed and can be adjusted.

On the other hand, when the bolts 28a inserted into the

long holes

27 and 24a are screwed into the stepped nuts 44, the positions of the door top case 14 in both the left-right direction and the front-rear direction are simultaneously restricted. In this process, since the stepped portion 46 of the stepped nut 44 is fitted into the elongated hole 24a, the stepped nut can be fixed without rotating together.

According to the fourth embodiment as described above, as shown in fig. 11B, even when there is no working space above the upper end portion 26 of the door top case 14, the nut 36 can be prevented from rotating together, and therefore the bolt 28a can be easily fastened by an operation from the lower side.

Although the door device of an elevator according to the present invention has been described above with reference to the preferred embodiment, the door device of an elevator can be similarly applied to a door device of a car in addition to the door device of an elevator hall described in the embodiment of the present invention. These embodiments are listed as examples and are not intended to limit the scope of the invention. It is to be understood that the novel devices, methods and systems described in the specification can be implemented in various forms, and various omissions, substitutions and changes can be made without departing from the spirit of the invention. The scope of the claims and their equivalents are intended to cover the embodiments or modifications thereof within the scope of the spirit of the invention.

Claims

1. An elevator door device having a door top box, a door guide provided in the door top box, a door hanger engaged with the door guide via a roller, and a door panel suspended from the door hanger, the elevator door device comprising:

a bracket for fixing the door top box to a wall surface of the doorway; and

at least one of the fastening members constitutes a direction fixing portion that fixes the door top case so that only a position in a longitudinal direction of one of the first long hole and the second long hole is fixed and a position in a longitudinal direction of the other long hole is adjustable.

2. The door device of an elevator according to claim 1,

the fastening member constituting the one direction fixing portion is composed of a bolt, a nut, and a collar, and the collar has an outer diameter substantially equal to a width of one of the first long hole and the second long hole having a larger width and a length protruding from the long hole having the larger width.

3. The door device of an elevator according to claim 1,

the fastening member constituting the one direction fixing portion is constituted by a bolt and a nut, and a width of an opposite side of the nut is substantially equal to a width of one of the first long hole and the second long hole, which is wider than the first long hole.

4. Door apparatus of an elevator according to claim 3,

the fastening member that does not constitute the one-direction fixing portion is constituted by a bolt and a nut with a plate having a hole into which the nut of the one-direction fixing portion can be fitted.

5. Door apparatus of an elevator according to claim 3,

the fastening member that does not constitute the one-direction fixing portion is constituted by a bolt and a stepped nut having a stepped portion that can be fitted into a long hole on the side from which the bolt projects.