JP2740058B2 - 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, and more particularly to an elevator door provided at a landing.

[0002]

2. Description of the Related Art In FIG. 5 which shows a cross section of a conventional elevator door provided in a landing, and FIG. 6 which also shows a deformed state in a vertical section, a landing wall 3 of a landing entrance 6 has a U-shaped cross section. A sill 5 in which a three-sided frame 2 is buried and a concave guide groove is formed at the front end of the landing floor 7 at the center of the upper surface along the longitudinal direction.
Is laid.

On the other hand, the upper rear surface of the landing wall 3, that is,
On the hoistway 8 side, a hanger rail 4 having a substantially Z-shaped cross section is erected laterally, and on the hoistway 8 side below the hanger rail 4,
A rail 11 having a convex cross section is fixed along the lateral direction.

Also, behind the hanger rail 4, a rail is provided.
A pair of guide rollers 13A is provided on the upper part of the rail 11, and a hanger plate 12 provided with a pair of auxiliary rollers 13B below the rail 11 corresponding to the pair of guide rollers 13A is provided along the lateral direction. Guide roller for rail 11
13A and the auxiliary roller 13B.

[0005] On the lower end surface of the hanger plate 12,
An upper end surface of an elevator door 1 described in detail below is fixed. As shown in FIG. 5, the elevator door 1 is provided with a front plate 9 having a cross section bent inward in a substantially concave shape, and spot welding along the longitudinal direction at the center of the inner surface of the front plate 9. A vertical bone 10 having a substantially convex cross-section, a side bone (not shown) provided along the horizontal direction by spot welding on the inner surfaces of the upper and lower ends of the front plate 9, and a pair fixed to the lower surface of the lower side bone And a guide shoe 14. Opening / closing is linked with a door (not shown) on the car side which is opened / closed by a motor (not shown) via an engaging portion (not shown), and a guide shoe 14 at the lower end is guided to the threshold 5.

[0006] In the elevator door 1 having the above-described structure, the material of the front plate 9 is not limited to a mild steel plate but is made of not only a stainless steel plate but also an aluminum plate, The adoption of non-ferrous materials such as brass sheets and copper sheets has been increasing, and in particular, as high-grade products, those having a surface of brass sheets or copper sheets subjected to sulfide anodizing have been increasing.

On the other hand, some of the installation locations of the elevator door 1 are provided in a beach area where direct sunlight is strong. Among them, for example, when the elevator door 1 is used for an elevator for an observatory, the direct sunlight is used for the elevator door 1. In some cases, the duration of the event can be more than eight hours a day.

[0008]

However, in the elevator door 1 having the above-described structure installed in such an environment, for example, when the surface is made of a copper plate having a sulfide anodized having a high heat absorption rate, the front plate is not provided. The temperature of 9 may rise to 60 ° C to 70 ° C in midsummer. Then, due to the thermal expansion of the front plate 9,
The center of the elevator door 1 is curved toward the landing entrance 6 as shown by the solid line in FIG. 6, and the surface of the elevator door 1 contacts the inside of the three-sided frame 2 when the door is opened and closed. If the protrusion amount due to the above-mentioned curvature exceeds about 6 mm, the elevator door 1 cannot be opened and closed, and the driving motor is overheated, while the elevator may be shut down.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an elevator door capable of preventing damage to the top plate due to the thermal expansion of the top plate, inability to open and close, and stop of the operation of the elevator.

[0010]

SUMMARY OF THE INVENTION The present invention relates to an elevator in which an upper portion is supported and guided by a guide rail provided on a landing wall, and a lower portion is guided by a sill embedded in a landing floor, and opens and closes in conjunction with a car side drive mechanism. In the door, a heat radiating plate is fixed to the back surface of the front plate along the vertical direction.

[0011]

[Function] When the front plate is heated by receiving direct sunlight, etc., this heat is transmitted to the radiator plate fixed to the back surface, and further radiated from the radiator plate to the hoistway side, so that the temperature rise of the front plate is suppressed to a low level. This prevents damage to the top plate due to thermal deformation, inability to open and close, and shutdown of the elevator.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing one embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. In FIGS. 1 and 2, an elevator door 20 includes a front plate 21 obtained by bending a metal plate selected according to customer specifications inward in a substantially concave shape in the same manner as the above-described conventional elevator door 1, L
An upper beam 22 which is shaped and fixed to the upper and lower ends of a front plate 21 by spot welding or bonding, with the outer surface of one side thereof facing upward.
And a sliding portion of the lower beam 23, the hanger plate 12 fixed to the upper portion of the upper beam 22, and a sill (not shown) on the lower inner surface side of the lower beam 23 so as to protrude downward from the lower end of the lower beam 23. And a plurality of heat sinks 24 fixed by spot welding or bonding along the longitudinal direction between the upper beam 22 and the lower beam 23 on the inner surface of the front plate 21.

The heat radiating plate 24 is formed by bending a metal plate (preferably having a high thermal conductivity) into a hollow square shape having a cross section open on one side, and bending the opening side inward to change the depth D to the upper beam 22 or the lower beam. The dimension is larger than the length E of the upper side of 23. The hanger plate 12 is provided with a pair of guide rollers and auxiliary rollers (both not shown) similar to the above-described conventional elevator door 1. An engaging portion (not shown) for opening and closing in conjunction with a car-side door (not shown) is attached to one of the plurality of heat radiating plates 24.

The elevator door 20 constructed as described above
Is installed in an observation deck or the like in the beach area and receives intense direct sunlight, so that even if the front plate 21 is heated, this heat is transmitted to the heat radiating plate 24 provided on the inner surface of the front plate 21, and From the hoistway 7 side. In this heat radiation, the cross section of the heat radiation plate 24 is formed in a hollow square shape with one side opened, and the air in the hoistway 7 uniformly contacts the inner surface and the outer surface.
The cooling effect has been improved. Due to such heat dissipation, the temperature rise of the front plate 21 can be suppressed low, and the central portion does not bend so as to protrude forward unlike the conventional elevator door 1 shown in FIG. In addition, since the heat radiating plate 24 functions not only as a heat radiating function but also as a reinforcing member that increases the sectional modulus of the elevator door by projecting toward the inner surface of the front plate 21, the curvature can be further reduced. .

[0015] Therefore, at the time of opening and closing, there is no interference with the inside of the three-sided frame 2, so the beautifully finished front plate 21
It is possible to prevent the surface of the vehicle from being damaged and to operate smoothly, thereby preventing an accident such as overheating of the drive motor and stoppage of the operation of the elevator.

The present invention relates to the above-described embodiment (hereinafter, referred to as the embodiment).
The present invention is not limited to the first embodiment, and various modifications can be made. FIG. 3 is a cross-sectional view showing another embodiment (hereinafter, referred to as a second embodiment) of the present invention. In the figure, an elevator door 30 has the same configuration as that of the first embodiment except for a heat sink 31. That is, the heat radiating plate 31 has a rectangular cross-section with one side opened and the opening side is bent outward, and the depth D is raised (not shown) as in the first embodiment.
The length is larger than the length E of the upper side of the lower beam 23.
The second embodiment configured as described above has the same effects as the first embodiment.

FIG. 4 is a cross-sectional view showing still another embodiment of the present invention. In the figure, an elevator door 40 has the same configuration as that of the first embodiment except for a heat sink 41. That is, the heat radiating plate 41 is formed by projecting a plurality of fin portions 41b parallel to both left and right sides with respect to a shaft portion 41a formed of an aluminum material and extending in the vertical direction.
The depth D is larger than the length E of the upper side of the upper beam (not shown) or the lower beam 23 as in the first embodiment. The third embodiment configured as described above has the same effects as the first embodiment.

[0018]

As described above, according to the present invention, since the heat sink is projected and fixed to the inner surface of the front plate, the heat received by the front plate due to direct sunlight or the like is efficiently radiated to the hoistway side. It is possible to provide an elevator door capable of preventing deformation due to damage to the surface, preventing opening and closing of the surface and stopping operation of the elevator.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of the present invention.

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

FIG. 3 is a cross-sectional view showing another embodiment of the present invention.

FIG. 4 is a cross-sectional view showing still another embodiment of the present invention.

FIG. 5 is a cross-sectional view of a conventional elevator door.

FIG. 6 is an explanatory view showing a deformed state of a conventional elevator door.

[Explanation of symbols]

2 ... three-way frame, 4 ... hanger rail, 5 ... threshold, 8 ... hoistway, 12 ... hanger plate, 21 ... top plate, 22 ... overhead, 23 ...
Lower, 24, 31, 41 ... heat sink.

Claims (1)

(57) [Claims] 1. An upper part is supported and guided by a guide rail provided on a landing wall, and a lower part is guided by a sill buried in a landing floor,
An elevator door which opens and closes in conjunction with a car side drive mechanism, wherein a heat radiating plate is fixed to a back surface of a front plate along a vertical direction.