JP7149916B2 - elevator door device - Google Patents

Description

The present invention relates to an elevator door system.

An elevator landing is provided with a landing door capable of facing a car that moves up and down a hoistway. In addition, depending on the standards of elevators, it is stipulated that a so-called heat insulating door is used as a hall door to prevent heat from being transferred from the hall door to the hoistway side due to a fire or the like. For such insulated doors, the temperature of the back of the door is measured with a thermocouple while the door is heated according to a specified heating temperature curve, and a test is performed to confirm whether the rise in the temperature of the back of the door satisfies the regulations. Performance is evaluated by

Background art of this technical field includes, for example, WO2018/011921 (Patent Document 1). This publication includes a front plate, a heat insulating member, and a reinforcing member, and the reinforcing member forms a space between the back surface of the front plate and is connected to the peripheral edge of the front plate, It is described that the heat insulating member is fixed in contact with the back surface in the space formed between the reinforcing member and the back surface.

WO2018/011921

However, although the method described in Patent Document 1 makes it difficult for the heat on the door surface to be conducted to the reinforcing member, since the heat insulating member is fixed to the back surface of the top plate, there is no gap between the top plate and the heat insulating member. Therefore, it is not sufficient to suppress the temperature rise of the heat insulating member during the performance evaluation test.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an elevator door apparatus capable of securing a space between a door panel and a heat insulating material even if the door panel is heated by heat during a performance evaluation test.

In order to solve the above-mentioned problems, the present invention provides a door panel covering a landing opening of an elevator building, and a plate member arranged opposite to the door panel, wherein a gap serving as an air passage is provided between the door panel and the door panel. and an intervening member arranged along the vertical direction in the air passage between the door panel and the heat insulating material to connect the door panel and the heat insulating material. It is characterized by

According to the present invention, it is possible to secure a space between the door panel and the heat insulating material even if the door panel is heated by heat during the performance evaluation test. Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

1 is a schematic configuration diagram of an elevator to which the present invention is applied; FIG. 1 is a front view of an elevator hall to which the present invention is applied; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows schematic structure of the landing door of the elevator to which this invention is applied. It is a rear view of the landing door according to the embodiment of the present invention. FIG. 5 is a cross-sectional view of the landing door according to the embodiment of the present invention, taken along line XX of FIG. 4; FIG. 5 is a longitudinal sectional view of the landing door according to the embodiment of the present invention, taken along line YY in FIG. 4;

DESCRIPTION OF THE PREFERRED EMBODIMENTS A mode for carrying out an elevator door device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of an elevator to which the present invention is applied. In FIG. 1, the elevator comprises a car 2 ascending and descending a hoistway 1 formed in an elevator building, a counterweight 3 ascending and descending the hoistway 1, a main rope 4 arranged in the hoistway 1, and a main rope 4 and a hoisting machine 5 having a sheave 5a around which the belt is wound. The main rope 4 has both ends fixed to the upper part of the hoistway 1 and supports the car 2 and the counterweight 3 in its intermediate part. The hoisting machine 5 is arranged below the hoistway 1 . When the motor (not shown) in the hoisting machine 5 rotates forward or backward, the driving force of the hoisting machine 5 is transmitted to the main rope 4, and the driving of the main rope 4 causes the car 2 and the counterweight 3 to move. The hoistways 1 are ascended and descended in opposite directions.

The car 2 is provided with a car door 6 arranged to cover the opening of the car 2. - 特許庁

FIG. 2 is a front view of an elevator hall to which the present invention is applied. In FIG. 2, an elevator hall 7 provided in an elevator building is provided with a pair of hall doors 8 facing the car door 6 when the car 2 lands.

FIG. 3 is a sectional view showing a schematic structure of an elevator landing door to which the present invention is applied. In FIG. 3, each landing door 8 is arranged to cover an opening (a landing opening) 7a provided in the landing 7 of the elevator building, and engages with the car door 6 when the car 2 lands on the floor. It is a structure that opens and closes. At this time, each landing door 8 is configured with a door panel 11 and a heat insulating material 12 attached to the door panel 11 to prevent heat 9 caused by a fire or the like from being transmitted from the landing 7 to the hoistway 1 side. It is a so-called heat insulating door. In such a landing door 8, the surface temperature of the heat insulating material 12 is measured by a thermocouple (not shown) while the door panel 11 is heated according to a predetermined heating temperature curve. The performance is evaluated by a test to confirm whether the temperature rise value satisfies the regulation. A specific configuration of the hall door 8 will be described below. Since each landing door 8 has the same structure, one landing door 8 will be described.

4 is a rear view of the landing door according to the embodiment of the present invention, and FIG. 5 is a cross-sectional view of the landing door according to the embodiment of the present invention, taken along line XX in FIG. 6 is a longitudinal sectional view of the landing door according to the embodiment of the present invention, taken along line YY in FIG. 4. FIG.

In FIGS. 4, 5 and 6, the landing door 8 is a door panel 11 and a plate member arranged to face the door panel 11, leaving a gap serving as an air passage between the door panel 11 and the door panel 11. a plurality of bracket bodies 14 fixed to both side surfaces of the heat insulating material 12; and an intervening member 15 connecting the heat insulating material 12. An air passage between the door panel 11 and the heat insulating material 12 is formed as a continuous space 13 connecting the exhaust hole 16 and the air intake hole 17 .

The door panel 11 is made of metal, for example, stainless steel, and is configured using a substantially rectangular plate material. direction). At this time, on the upper side of the door panel 11, a bent portion (upper side bent portion) 11a that is bent from the upper end portion of the door panel 11 toward the heat insulating material 12 side and closes the upper side of the continuous space 13 is formed. At the lower side of the door panel 11, a bent portion (lower side bent portion) 11b that bends from the lower end portion of the door panel 11 toward the heat insulating material 12 side and closes the lower side of the continuous space 13 is formed. , bent portions (side bent portions) 11c and 11d are formed which bend from both side portions of the door panel 11 toward the heat insulating material 12 side, respectively, and close both side side portions of the continuous space 13, respectively. Furthermore, engaging portions (first engaging portions) 11cc and 11dd that are bent toward the heat insulating material 12 from the ends of the bent portions 11c and 11d are formed on the bent portions 11c and 11d.

The heat insulating material 12 is formed in a substantially rectangular parallelepiped shape and attached to the door panel 11 via the bracket body 14 . At this time, the heat insulating material 12 is arranged so that its front surface 12a faces the rear side of the door panel 11, and its rear surface 12b is substantially flush with the engaging portions 11cc and 11dd of the door panel 11. . Almost the entire area of the rear surface 12b of the heat insulating material 12 serves as a thermocouple pasting position range. For example, a thermocouple for measuring the maximum temperature rise of the landing door 8 is arranged in the upper region of the back surface 12b of the heat insulating material 12, and , a thermocouple is arranged to measure the average temperature rise in addition to the maximum temperature rise of the landing door 8 .

A plurality of bracket bodies 14 are attached to both side ends of the door panel 11 so as to extend in the vertical direction. At this time, each bracket body 14 has an engaging portion (second engaging portion) 14a that engages with the engaging portions 11cc and 11dd, respectively, and a clamping portion 14b that clamps both side surfaces of each bracket body 14. I have it. Each engaging portion 14a is formed to be bent toward the engaging portions 11cc and 11dd from the end portion of each holding portion 14b. Each engaging portion 14a and each clamping portion 14b are integrally formed and arranged separately on both side surfaces of the heat insulating material 12, and are arranged along the longitudinal direction (vertical direction) of the heat insulating material 12. ing. The clamping portion 14b has a substantially U-shaped cross section (vertical cross section).

The intervening member 15 is a long plate made of metal, for example, stainless steel, and is configured using a plate having substantially the same length as the door panel 11. A region containing a virtual center line along the vertical direction) and a center portion on the surface side of the heat insulating material 12 (a center portion in the horizontal direction of the heat insulating material 12, a virtual center line along the vertical direction) area containing the center line of the At this time, the intervening member 15 is formed as a reinforcing member for suppressing deformation of the heat insulating material 12, and its cross section (horizontal cross section) is formed in a rectangular shape (substantially U shape). The intervening member 15 is, for example, mechanically fixed at its upper end to the bent portion 11a by a rivet (not shown) and mechanically fixed at its lower end to the bent portion 11d by a rivet (not shown). and the intermediate portion thereof is adhered to the heat insulating material 12 by an adhesive such as double-sided tape (not shown).

As a result, the intervening member 15 normally serves as a reinforcing member (reinforcing member) that reinforces the door panel 11, and even if the adhesive force of the double-sided tape is lost during heating, the upper and lower ends of the intervening member 15 are mechanically secured by the rivets. By being fixed to the door panel 11, the upright state can be maintained and the deformation of the heat insulating material 12 can be continuously suppressed.

In addition, a plurality of exhaust holes 16 are formed in the bent portion 11a on the upper side of the door panel 11 outside the attachment position range of the thermocouple, and a plurality of air intake holes are formed in the bent portion 11b on the lower side of the door panel 11. 17 is formed outside the attachment position range of the thermocouple. Each exhaust hole 16 is formed as an opening that continues to the continuous space 13 that is formed along the vertical direction from the upper rear side to the lower rear side of the door panel 11 . Each air intake hole 17 is formed as an opening connected to the continuous space 13 on the lower side of the door panel 11 .

The landing door 8 constructed in this manner is installed in an elevator after undergoing a test in advance to determine whether it satisfies the standards as a heat insulating door. This test is performed by heating the surface of the hall door 8 according to a predetermined heating temperature curve and measuring the temperature of the rear surface of the door with a thermocouple attached to the rear surface of the hall door 8 . At this time, since the heat insulating material 12 is arranged within the range of the position where the thermocouple is attached to the hall door 8, the thermocouple must ) will be pasted anywhere.

When the surface of the landing door 8 is heated, the air positioned in the continuous space 13 is warmed and rises, and the warmed air is discharged from the exhaust hole 16 to the rear side (outside) of the landing door 8. - 特許庁Accordingly, the air on the rear side (outside) of the landing door 8 is sucked toward the continuous space 13 through the air intake holes 17 in the lower portion of the door panel 11 . As a result, as shown in FIG. 6, natural convection occurs in the continuous space 13 as indicated by arrows, and the air cooling effect of the air rising in the continuous space 13 cools the heating surface side of the heat insulating material 12 (heat insulating material). The temperature rise on the surface 12a side) is suppressed, and the temperature rise on the non-heated surface side of the heat insulating material 12 (the back surface 12b side of the heat insulating material 12), which is the temperature measurement surface, is suppressed.

Further, when the surface of the landing door 8 is heated to a high temperature in the event of an actual fire, the door panel 11 and the heat insulating material 12 are deformed in a direction projecting toward the landing 7 as indicated by the dotted lines in FIGS. can be considered. That is, since the door panel 11 and the heat insulating material 12 are made of different materials, they also have different coefficients of thermal expansion. Therefore, if the intervening member 15 is not present between the heat insulating material 12 and the door panel 11, the heat insulating material 12 will block the continuous space 13 if the heat insulating material 12 is deformed or buckled more than the door panel 11, and during heating, , there is a risk that natural convection will not occur in the continuous space 13 .

Therefore, in this embodiment, an intervening member 15 is arranged in the continuous space 13 between the heat insulating material 12 and the door panel 11, and even if the landing door 8 is heated, the heat insulating material 12 is prevented from being greatly deformed, A space (gap) is continuously secured as the continuous space 13, and natural convection is generated in the continuous space 13 to maintain the air cooling effect.

According to such a configuration, the back surface 12b of the heat insulating material 12, which is the farthest surface from the heating surface, can be used as the temperature measurement surface. In addition, during heating, natural convection is generated in the continuous space 13 connecting the intake hole 17 and the exhaust hole 16, and the temperature rise of the temperature measurement surface (back surface 12b) of the heat insulating material 12 is suppressed by the air cooling effect accompanying the natural convection. can be done. As a result, the hall door 8 can pass the performance evaluation test of the heat insulating door. In addition, since the intervening member 15 functions as a reinforcing member that reinforces the door panel 11, the intervening member 15 prevents the heat insulating material 12 from being greatly deformed during heating, and the gap as the continuous space 13 can be continuously secured. can. As a result, it is possible to generate natural convection in the continuous space 13 and maintain the air cooling effect associated with the natural convection.

According to this embodiment, the door panel is heated by the heat during the performance evaluation test, and even if the door panel warps toward the hall, a space can be secured between the door panel and the heat insulating material. can pass.

Further, according to the present embodiment, the intervening member 15 is formed to have a rectangular cross section, so that even a single member can suppress large deformation of the heat insulating material 12, and as a result, the functional It is possible to construct a heat insulating door with high performance.

Furthermore, according to the present embodiment, the intervening member 15 is fixed to the door panel 11 by rivets at its upper and lower ends, and is adhered to the heat insulating material 12 by double-sided tape at its intermediate portion. Even if the adhesive strength of the double-faced tape between the intervening member 15 and the heat insulating material 12 is burned off, the intervening member 15 can keep the upright state and continue to suppress the deformation of the heat insulating material 12 .

Further, according to this embodiment, the door panel 11 and the heat insulating material 12 are engaged with the engaging portion 14a of the bracket body 14 via the engaging portions 11cc and 11dd of the door panel 11, and the door panel 11 and the heat insulating material as a whole are heat-insulated. A box is formed by the material 12, and an exhaust hole 16 and an intake hole 17 are formed in the upper part and the lower part of the box as openings connected to the space (continuous space 13) of the box, respectively. The space 13 can be efficiently utilized as a region for generating natural convection.

Further, according to the present embodiment, the heat insulating material 12 is arranged over the range of positions where the thermocouples are attached, and each exhaust hole 16 and each air intake hole 17 are formed at positions outside the range of positions where the thermocouples are attached. Therefore, the area of the back surface 12b of the heat insulating material 12 can be used as the temperature measurement surface.

It should be noted that the present invention is not limited to the above-described embodiments, and includes various modifications. For example, instead of constructing the hall door 8 with a pair of door panels 11, it can be constructed with a single door panel and a single heat insulating material. Further, when fixing the intervening member 15 to the door panel 11, bolts may be used instead of rivets, and the intervening member 15 may be fixed to the door panel 11 by welding. Furthermore, a plurality of intervening members 15 can be arranged between the heat insulating material 12 and the door panel 11 . Moreover, as the intervening member 15, a member having an L-shaped cross section or a Z-shaped cross section can also be used. The above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the described configurations. Other configurations can be added, deleted, or replaced with respect to part of the configuration of the embodiment.

2 car, 8 landing door (heat insulating door), 11 door panel, 12 heat insulating material, 13 continuous space, 14 bracket body, 15 intervening member, 16 exhaust hole, 17 intake hole

Claims (5)

A door panel that covers the landing opening of the elevator building,
A heat insulating material that is a plate material that is arranged to face the door panel and that is arranged with a gap serving as an air passage between the door panel and the door panel;
an intervening member arranged along the vertical direction in the air passage between the door panel and the heat insulating material and connecting the door panel and the heat insulating material ;
Formed on the upper side of the door panel is an upper bent portion that bends from the upper end of the door panel toward the heat insulating material to block the upper side of the air passage,
A lower side bent portion is formed on the lower side of the door panel to bend from the lower end portion of the door panel toward the heat insulating material to close the lower side of the air passage,
A plurality of side bent portions are formed on both side portions of the door panel, each bending from both side portions of the door panel toward the heat insulating material to block both side surfaces of the air passage,
A plurality of exhaust holes connected to the air passage are formed in the upper bent portion,
A door apparatus for an elevator , wherein a plurality of intake holes communicating with the air passage are formed in the lower bent portion . The elevator door device according to claim 1,
The intervening member is
A door apparatus for an elevator, wherein a metal reinforcing member for reinforcing the door panel is formed to have a rectangular cross section. The elevator door device according to claim 2,
The intervening member is
An elevator door apparatus comprising: an upper end portion fixed to the upper portion of the door panel; a lower end portion fixed to the lower portion of the door panel; and an intermediate portion adhered to the heat insulating material via an adhesive. The elevator door device according to claim 1 ,
The heat insulating material
It is arranged over the pasting position range of the thermocouple,
the plurality of exhaust holes and the plurality of air intake holes,
A door device for an elevator, characterized in that it is formed at a position outside the range of attachment positions of the thermocouple. a pair of door panels covering the landing opening of the elevator building;
a pair of heat insulating plates arranged to face each of the pair of door panels, and arranged with a gap serving as an air passage between the pair of door panels;
a pair of intervening members disposed along the vertical direction in the air passage between each door panel and each heat insulating material to connect each door panel and each heat insulating material;
A pair of bracket bodies arranged on both side surfaces of each heat insulating material and supporting both side surfaces of each heat insulating material,
Each intervening member is
The upper end is fixed to the upper part of each door panel, the lower end is fixed to the lower part of each door panel, and the intermediate part is adhered to each heat insulating material via an adhesive, and a metal body that reinforces each door panel. As a reinforcing body, the cross section is formed in a rectangular shape,
An upper side bent portion is formed on the upper side of each door panel to bend from the upper end of each door panel toward the heat insulating material side and close the upper side of the air passage,
At the lower side of each door panel, a lower side bent portion is formed which bends from the lower end of each door panel toward the heat insulating material side and closes the lower side of the air passage,
Formed on both side surfaces of each door panel are side bent portions that are bent from both side surfaces of each door panel toward the respective heat insulating materials to block both side surfaces of the air passage,
A plurality of exhaust holes connected to the air passage are formed in each of the upper bent portions,
A plurality of intake holes connected to the air passage are formed in each of the lower-side bent portions,
Each of the side-side bent portions is formed with a first engaging portion that is bent from an end portion of each side-side bent portion toward each of the heat insulating materials,
Each bracket body is formed with a sandwiching portion for sandwiching both side surfaces of each heat insulating material,
Each of the holding portions is formed with a second engaging portion that is bent from an end portion of each holding portion toward each of the side bending portions,
An elevator door apparatus, wherein the first engaging portions and the second engaging portions are engaged with each other.

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