JP2797970B2 - Elevator door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door.

[0002]

2. Description of the Related Art Conventionally, as an elevator door, for example,
There is a technique disclosed in JP-A-62-132089.
FIG. 10 is a perspective view of a conventional elevator door. FIG.
, The landing door 3 is arranged on the entrance / exit side of an entrance (not shown). The landing door 3 has a front plate 3a formed by bending both side edges of the plate material, an upper reinforcing material 3b which is welded or adhered to the upper rear surface of the front plate 3a, and a lower portion which passes through the lower rear surface of the front plate 3a. It is composed of a reinforcing member 3c and a vertical reinforcing member 3d disposed between the upper reinforcing member 3b and the lower reinforcing member 3c and welded or bonded to the back surface of the front plate 3a. FIG. 11 is a sectional view showing an elevator door suspended on a door rail provided on a wall. As shown in FIG. 11, a door hanger 4 having an L-shaped cross section is provided above the landing door 3. The door hanger 4 is connected to the landing door 3 by fastening a bolt 5 to a nut 3e fixed to the upper reinforcing member 3b via an adjustment piece 6. The hanger roller 7 provided on the upper part of the door hanger 4 reciprocates along a door rail 9 provided transversely to the hanger case 8.

The door of such a conventional elevator is suspended on a door rail 9 by a door hanger 4 and a door roller 7. When driven by a driving device (not shown), the door roller 7 rolls on the door rail 9 and the landing door 3 opens and closes the entrance.

[0004]

However, in recent years, elevator doors have been used because of their light weight and easy work.
It is configured using a thin plate material. For this reason, in the elevator door as described above, when the landing door 3 opens and closes the entrance, the bending stress in the swinging direction in the entrance and exit direction is concentrated near the fastening portion between the landing door 3 and the door hanger 4. I do.
As a result, it is necessary to prevent fatigue fracture due to bending stress concentrated near the joint between the landing door 3 and the door hanger 4,
The upper reinforcing member 3b constituted by a thick plate or a double structure is welded or welded to the front plate 3a from the inside of the landing door 3. However, it is difficult to automatically produce the door to which the upper reinforcing member 3b made of a thick plate or the like is attached, and the production efficiency is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and prevents fatigue failure due to concentration of bending stress near a joint between a door hanger and an elevator door made of a thin plate material. It is another object of the present invention to provide an elevator door that can be easily automated.

[0006]

According to the present invention, there is provided an elevator door having a substantially box-shaped door plate made of a thin plate material and a substantially rectangular cross section fitted to cover a predetermined region of an upper end surface of the door plate. a cap member shaped and door hanger having a door panel inside the door plate inner surface fitted in close contact together a seat plate of just below the caps member, a bent fixing portion abutting on caps member, bending < br /> songs fixing unit, in which a fastening member for pressing secured together through caps member, the upper end face, the及beauty seat plate.

Here, the cap member and the seat plate may be provided corresponding to the installation position of the door hanger.

Further, the cap member may be provided with a convex portion which comes into contact with an end of the back plate constituting the door plate.

Further, the seat plate may be formed of a member having a substantially L-shaped cross section.

[0010]

In the elevator door according to the present invention, a cap member having a substantially U-shaped cross section is fitted so as to cover a predetermined region of the upper end surface of a substantially box-shaped door plate made of a thin plate material. The inside of the door plate immediately below the member is closely fitted to the inner surface of the door plate, and furthermore, the door hanger,
The cap member, the upper end surface of the door plate, and the seat plate are penetrated and fixed integrally by pressure. For this reason, the concentration of bending stress in the vicinity of the joint between the door hanger and the door plate is prevented, thereby preventing the occurrence of fatigue fracture.

[0011]

[Embodiment 1] Figure 1 is a front view of a dove-ride viewed elevator from entrance side,
FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG.
Sectional view taken along the line B, FIG 4 is a c arrow view of FIG. FIG.
4 to 4, the same or corresponding parts as those in the conventional example shown in FIGS. 10 and 11 are denoted by the same reference numerals, and description thereof will be omitted. FIG.
As shown in the figure, the doors of the elevator are arranged on the entrance 2 side of the entrance provided on each floor. The landing door 3 constituting the door of the elevator has an upper end surface portion 3f whose upper edge is bent along the elevator elevating direction, a first bent portion 3g further bent to the elevator car side of the elevator, a door opening / closing direction. Bent portion 3 whose both edges are bent in the opening and closing direction of the door
h, the third bent portion 3 bent toward the entrance side inside the car
j.

A cap member 14 having a substantially U-shaped cross section is provided on the upper end face portion 3f so as to cover the landing door 3 from above in the same length in the opening and closing direction of the landing door 3. I have. Further, the seat plate 15 is provided directly below the upper end face portion 3f so as to fit in from the inside of the landing door 3 in a state in which the seat plate 15 is in close contact with the cap member 14.
Further, the door hanger 4 is provided so as to position the bent and fixed portion having a substantially L-shaped cross section on two upper end surfaces 3 f of one landing door 3.

According to the thus constructed elevator door, the cap member 14 having a substantially U-shaped cross section is covered by the upper end surface 3f from the upper side of the landing door 3, and the seat plate 15
Are fitted to the upper end face portion 3f from the inside of the landing door 3. In other words, the upper end surface 3f is sandwiched between the cap member 14 and the seat plate 15 from above and below along with the elevation of the elevator. Further, the door hanger 4 includes the cap member 14 and the adjusting piece 6 from the upper side of the upper end face portion 3f.
Then, the bolt 5 is inserted from the inside of the landing door 3 through the seat plate 15.
And the nut 16 are coupled to the landing door 3. The door hanger 4 is fixed to a hanger case 8 by suspending two door rollers 7 a and 7 b provided on one door hanger 4 on a door rail 9. Door rail 9
Is fixed to the wall 1 in the opening and closing direction of the door and is laterally passed therethrough. The landing door 3 connects the door rollers 7a and 7b to the door rail 9
The door is opened and closed by rolling in the opening and closing direction of the door along. At this time, the guide piece 13 at the lower end of the landing door 3 slides in the groove 10a of the sill 10 to guide the opening and closing.

As described above, according to the elevator door, the cap member 14 is moved from the upper side of the landing door 3 to the landing door 3.
When the seat plate 15 is fitted into the upper end surface 3f from the inside of the landing door 3, the upper end surface 3f is sandwiched from above and below when the elevator is moved up and down. As a result, the thickness of the elevator near the upper end face 3f in the elevating direction increases,
The strength in the vicinity of the upper end face 3f can be increased. Also,
By making the thickness of the section of the surface of the cap member 14 which is the center of gravity of the landing door 3 in the surface direction forming the design surface of the cap member 14 uniform with no steps, the door entrance / exit direction is improved. Even if a bending stress is generated due to the two swings and concentrated on that portion, it is possible to prevent the occurrence of fatigue fracture caused by the stress concentration.

In the first embodiment, the outer periphery of the landing door 3 is
The upper edge portion is provided with an upper end surface portion 3f bent along the elevator elevating direction and a first bent portion 3g bent toward the car side of the elevator, but the material and thickness of the landing door 3 are provided. If the strength is sufficient due to, for example, the upper edge portion 3 whose upper edge portion is bent along the elevator ascending and descending direction.
Only f may be provided.

In the first embodiment, a description has been given of an embodiment in which the present invention is applied to the landing door 3 provided at the entrance of each floor. However, it is needless to say that the present invention may be applied to a car-side door.

Embodiment 2 FIG. Second Embodiment An elevator door according to a second embodiment will be described with reference to FIGS. 5 and 6 are cross-sectional views showing the structure of the door of the elevator according to the second embodiment. In FIGS. 5 and 6, the conventional example shown in FIGS. 10 and 11 and FIGS. 1 to 4 are shown. The same or corresponding parts as in the embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the first embodiment, the cap member 14 is provided on the entire length of the upper end surface 3f in the opening and closing direction of the door .
As shown in FIG. 6, the cap member 14 includes a seat plate 15a,
15b, landing door via adjustment pieces 16a and 16b respectively
3 and the door hanger 4
Have been.

In the elevator door thus constructed, each of the cap members 14a, 14b is covered by the landing door 3 from above the landing door 3. Also, corresponding to each cap member 14a, 14b, each seat plate 15a, 15b
Is fitted into the upper end face portion 3f from the inside of the landing door 3. As a result, the upper end face portion 3f is moved to the cap member 14a,
14b and the seat plates 15a, 15b sandwich the elevator in the elevating direction. In addition, Doha
The finger 4 is provided with cap members 14a and 14b, respectively.
In accordance with the position , the bolt 5 is inserted from the upper side of the upper end face portion 3f through the cap members 14a, 14b, the adjusting pieces 6a, 6b, and the seat plate 15a, 15b from the inside of the landing door 3.
a, 5b and nuts 16a, 16b are connected to the landing door 3, respectively.

The door rail 9 is provided through laterally along the opening and closing direction of the door Ha <br/> down cliffs over scan 8 fixed to the wall 1. Further, two door rollers 7 a and 7 b are provided for one door hanger 4, and roll on the door rail 9. The landing door 3 is suspended on a door rail 9 by a door hanger 4 and door rollers 7a and 7b.
Then, Doaro La 7 a, 7b open and close the door is carried out by rolling on the door rail 9 in the closing direction of the door. At this time, the guide piece 13 at the lower end of the landing door 3 is
Opening / closing is guided by sliding in the groove 10a. Upper face 3f sandwiched from upper and lower directions, further <br/> their respective de Ahanga 4 bolts 5a, 5b and a nut 16
a, 16b to connect to the upper end face 3f.

[0020] Thus the door of the elevator, the cap member 14a, 14b, the seat plate 15a, 15b is so provided for each position of the fastening portion between the Doaha <br/> emission gas 4, the fastening portion thereof Can be increased. Further, by making the thickness of the cross-section on the side of the center of gravity of the landing door 3 that constitutes the design surface of the door of the cap member 14 uniform with no steps, the door swings in both directions. Therefore, even if bending stress is generated and concentrated on the portion, it is possible to prevent the occurrence of fatigue fracture due to the stress concentration. Further, the cap member 14a, 14b, the seat plate 15a, 15b is without being affected by the length of the opening and closing direction of the door of the upper surface portion 3f, it is possible to use the same parts, achieving a compatibility-common parts And management of parts can be facilitated.

Embodiment 3 FIG. Third Embodiment An elevator door according to a third embodiment will be described with reference to FIGS. 7 and 8. 7 and 8 are sectional views showing the structure of the door of the elevator according to the third embodiment.
The same or corresponding parts as those of the conventional example shown in FIG. 11 and the embodiment shown in FIG. 11 and the embodiment shown in FIGS. As shown in FIGS. 7 and 8, in the third embodiment, cap members 14 a and 14 b are provided for each fastening portion between the door hanger 4 and the landing door 3, as in the second embodiment.
However, the cap members 14a, 14b are provided at the ends of one side surface of the cap members 14a, 14b, that is, at the upper end surface portion 3f.
14b is provided in advance at both ends of the landing door 3 at the end of the side surface opposite to the design surface of the landing door 3 when it is covered.
Each of the convex portions 101 is brought into contact with the third bent portion 3j.
a, 101b are provided. Further, a bolt hole is provided in the upper end face 3f in accordance with the position of the cap members 14a and 14b at the time of this contact.

In the elevator door thus constructed, as shown in FIGS. 7 and 8, the cap members 14a, 1
4b is provided so as to cover the upper end face 3f at each fastening point between the door hanger 4 and the landing door 3. Then, further, the third to the bent portions 3j Hesorezo Re moved by moving previously provided the cap member 14a, and 14b at both ends of the landing doors 3, the cap member 14a, the 14b, the design surface of the landing doors 3 Convex portion 101 provided at end of paired side surface
a and 101b abut on the third bent portion 3j , respectively.
As a result, the positions of the bolt holes provided in the cap members 14a and 14b in advance and the positions of the bolt holes provided in the upper end surface portion 3f match, thereby positioning the cap members 14a and 14b. In addition, the seat plates 15a and 15b come into close contact with the inside of the landing door 3 and fit therein. Then, the bolts 5a and 5b and the nut 16 respectively
The door hanger 4 and the landing door 3 are integrally connected by fastening the control doors a and 16b via the adjusting pieces 6a and 6b.

Thus, according to this elevator door,
When connecting the door hanger 4 and the landing door 3 by fastening the bolts 5a, 5b and the nuts 16a, 16b, the ends of the side surfaces of the cap members 14a, 14b that are opposed to the design surface of the landing door 3. Convex portions 101a, 1 provided on
01b comes into contact with the third bent portions 3j on both edges of the landing door 3 to position the bolt holes provided in the cap members 14a and 14b in advance and the positions of the bolt holes provided in the upper end surface 3f in advance. Therefore, at the time of installation, the assembler can be relieved from the troublesome positioning work required for fastening the bolt 5 and the nut 16.

Embodiment 4 FIG. Fourth Embodiment An elevator door according to a fourth embodiment will be described with reference to FIG. FIG. 9 is a cross-sectional view showing the structure of the door of the elevator according to the fourth embodiment.
1 and the same or corresponding parts as those of the embodiment shown in FIGS. 1 to 8 are denoted by the same reference numerals, and description thereof will be omitted. In the second and third embodiments, the seat plate 15 is brought into close contact with the door hanger 4 from the inside of the landing door 3 corresponding to the fastening position of the door hanger 4 to the landing door 3, but in the fourth embodiment, instead of the seat plate 15, The L-shaped reinforcing member 17 provided with a bolt hole in advance and having a substantially L-shaped cross section is tightly contacted from the inside so that the rigidity of the thin plate is substantially the same as the rigidity of the seat plate 15.

As shown in FIG. 9, the L-shaped reinforcing member 17 is fixed in advance to the upper end face 3f from the inside of the landing door 3 by using rivets 18. A rivet escape hole is provided in advance in the cap member 14 at a position corresponding to the rivet 18 so that the rivet 18 and the cap member 14 do not abut.

In the elevator door thus constructed, the cap member 14 is covered by the upper end face 3f from the upper side of the landing door 3, and the L-shaped reinforcing member 17 is provided by the cap at the upper end face 3f. According to the mounting position of the member 14, the fitting is performed in a state of being in close contact with the inside of the landing door 3. As a result, upper surface portion 3f in preparative <br/> with the position of each of the cap members 1 4, the cap member 1 4 along the elevation of the elevator
Sandwiched more from the vertical direction to the L-shaped reinforcing member 1 7 as.
And the door hanger 4, the cap member 14 , the landing door 3,
By fastening the bolt 5 and the nut 16 via the adjusting piece 6 and the L-shaped reinforcing member 17 , these are integrally connected.

As described above, according to the elevator door,
For example, when the plate thickness of the L-shaped reinforcing member 17 is equal to the plate thickness of the seat plate 15, the rigidity of the L-shaped reinforcing member 17 is higher than the rigidity of the seat plate 15. Therefore, even if the L-shaped reinforcing member 17 has the same rigidity as the seat plate 15, the thickness thereof can be reduced, so that the drilling work of the L-shaped reinforcing member 17 is facilitated, and the measurement of the parts and the whole door are performed. Can be reduced in weight.

Further, in the construction stage of the landing door 3, the landing door 3 and the L-shaped reinforcing member 17 are fixed and assembled using rivets 18 in advance and shipped, so that the L-shaped reinforcing member 17 at the time of installation of the elevator is installed. Installation work is unnecessary, and
Loss of parts during transportation can be prevented.

Although the rivet 18 has been described as a means for fixing the L-shaped reinforcing member 17 in the fourth embodiment, a tapping screw or the like may be used instead.

In the fourth embodiment, the second and third embodiments are used.
As shown in FIG.
However, as in the first embodiment, one L-shaped reinforcing member 17 is used instead of one seat plate 15, and the opening / closing direction of the landing door 3 is substantially in the opening / closing direction with respect to the upper end surface 3f. The landing door 3 may have the same length and be tightly fitted in the thickness direction of the landing door 3 from the inside of the landing door 3 at the upper end face 3f.

[0031]

As described above, according to the elevator door of the present invention, the work can be easily performed. In addition, the strength near the upper end surface increases, and even if bending stress is generated due to swinging of the door in the direction of entry and exit and concentrated on the design surface side cross section of the door, fatigue failure due to the stress concentration is caused. The occurrence can be prevented.

Further, since the cap member and the seat plate can be made of the same part regardless of the length of the door at the upper end surface in the opening and closing direction, interchangeability and commonality of parts can be achieved, and manageability of parts can be achieved. Can be facilitated.

Further, it is possible to relieve the assembler of the positioning work when installing the elevator.

In addition, the thickness and the weight can be reduced while securing the same rigidity as the conventional seat plate.
The work of the L-shaped member is facilitated, and the weight of the parts and, consequently, the weight of the entire door can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a landing door when an elevator of the present invention is viewed from a doorway side.

FIG. 2 is a cross-sectional view taken along line AA of FIG.

FIG. 3 is a longitudinal sectional view taken along the line BB of FIG. 1;

FIG. 4 is an explanatory diagram showing an enlarged part c of FIG. 1;

FIG. 5 is a cross-sectional view illustrating a structure of an elevator door according to a second embodiment.

FIG. 6 is a cross-sectional view illustrating a structure of an elevator door according to a second embodiment.

FIG. 7 is a cross-sectional view illustrating a structure of an elevator door according to a third embodiment.

FIG. 8 is a cross-sectional view illustrating a structure of an elevator door according to a third embodiment.

FIG. 9 is a cross-sectional view illustrating a structure of an elevator door according to a fourth embodiment.

FIG. 10 is a perspective view of a conventional elevator door.

FIG. 11 is a sectional view showing a structure of a conventional elevator door.

[Explanation of symbols]

 3 ... landing door 4 ... door hanger 5 ... bolt 6 ... adjustment piece 14 ... cap member 15 ... seat plate 16 ... nut 17 ... L-shaped reinforcement member 18 ... ·rivet

────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Kenji Nomura 1 Inishi, Inazawa-shi, Aichi Prefecture Inabishi Technica Co., Ltd. (56) References Japanese Utility Model Sho 62-132089 (JP, U) Japanese Utility Model Sho 58-1868691 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B66B 13/30

Claims (4)

(57) [Claims] 1. A substantially box-shaped door plate made of a thin plate material, a cap member having a substantially U-shaped cross section fitted so as to cover a predetermined region of an upper end surface of the door plate, and a cap member immediately below the cap member. A seat plate fitted inside the door plate in close contact with the inner surface of the door plate, a door hanger having a bent fixed portion abutting on the cap member, the bent fixed portion, the cap member, and the upper end surface portion And a fastening member that penetrates through the seat plate and is integrally pressed and fixed. 2. The elevator door according to claim 1, wherein said cap member and said seat plate are provided corresponding to the installation position of said door hanger. 3. The elevator door according to claim 1, wherein said cap member has a convex portion which comes into contact with an end of a back plate constituting said door plate. 4. The seat plate according to claim 1, wherein said seat plate is constituted by a member having a substantially L-shaped cross section.
An elevator door according to any of the preceding clauses.