HK1146031B - Landing doorway device for an elevator - Google Patents

Description

Landing entrance device for elevator

Technical Field

The present invention relates to a landing entrance apparatus for an elevator, and more particularly to improvement in heat resistance of the landing entrance apparatus for an elevator.

Background

In a conventional landing door device for an elevator, a heat insulating member is attached to a surface of a door panel on a hoistway side (see, for example, patent document 1).

Patent document 1: japanese Kohyo publication No. 2002-514701

However, in the conventional elevator, not only the door panel but also the landing door pocket faces the landing and the hoistway, and therefore, when the landing door pocket is heated by a fire, the landing door pocket reaches a high temperature, and there is a possibility that the equipment in the hoistway is ignited by the heat.

Disclosure of Invention

The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a landing doorway device for an elevator, which can more reliably prevent heat from being transmitted from a landing to the elevator in a hoistway.

A landing entrance device for an elevator according to the present invention includes: a cylindrical vertical frame provided at a side portion of the landing doorway, and having a landing doorway facing portion facing the landing doorway and a hoistway facing portion facing the inside of the hoistway; and a vertical frame heat insulating member provided at the hoistway facing portion, for suppressing heat conducted from the landing doorway facing portion to the hoistway facing portion from being transmitted into the hoistway.

Drawings

Fig. 1 is a front view showing a landing entrance apparatus of an elevator according to embodiment 1 of the present invention.

Fig. 2 is a sectional view taken along line II-II in fig. 1.

Fig. 3 is a sectional view showing a main portion in fig. 2 in an enlarged manner.

Fig. 4 is a cross-sectional view of an elevator landing entrance apparatus according to embodiment 2 of the present invention.

Fig. 5 is a sectional view showing a main portion in fig. 4 in an enlarged manner.

Fig. 6 is a rear view of the vertical frame on the door shield side in fig. 5, as viewed from the hoistway side.

Fig. 7 is a cross-sectional view of an elevator landing entrance apparatus according to embodiment 3 of the present invention.

Fig. 8 is a sectional view showing a main portion in fig. 7 in an enlarged manner.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment mode 1

Fig. 1 is a front view showing a landing entrance apparatus of an elevator according to embodiment 1 of the present invention. In the figure, a landing doorway 1 is provided in an elevator landing. Landing door covers 2 are provided on the left, right, and upper portions of the landing doorway 1. The landing door pocket 2 includes a door stop side vertical frame 3, a door box side vertical frame 4, and an upper frame 5. The landing doorway 1 is opened and closed by a first landing door (high-speed door) 6 and a second landing door (low-speed door) 7.

Fig. 2 is a sectional view taken along line II-II in fig. 1, and fig. 3 is a sectional view showing a main portion in fig. 2 in an enlarged manner. The first landing door 6 includes a first door panel 8, a first door heat insulating member 9 provided on the hoistway side of the first door panel 8, and a first shielding plate 10 having an L-shaped cross section and fixed to the door box side end of the first door panel 8. The first shutter 10 is provided continuously in the vertical direction, and the first shutter 10 shields a gap between the first landing door 6 and the second landing door 7 when the doors are fully closed.

The second landing door 7 includes a second door panel 11, a second door insulating member 12 provided on the hoistway side of the second door panel 11, and a second shielding plate 13 having an L-shaped cross section and fixed to the door box side end of the second door panel 11. The second shielding plate 13 is provided continuously in the vertical direction, and the second shielding plate 13 shields the gap between the second landing door 7 and the door box side vertical frame 4 when the door is fully closed.

A door recess (groove) 11a into which the tip end portion of the first shielding plate 10 is inserted when the door is completely closed is provided in the vertical direction at the end portion of the second door panel 11 on the side opposite to the door box. The door-box-side vertical frame 4 is provided with a vertical frame recess (groove) 4a into which the distal end portion of the second shield plate 13 is inserted when the door is fully closed, in the vertical direction.

The door shield side vertical frame 3 and the door box side vertical frame 4 are respectively cylindrical. A first refractory member 14a is partially placed at the landing side end portion in the door shield side vertical frame 3. A second refractory member 14b is partially placed at the landing-side end portion in the door-box-side vertical frame 4. The first and second refractory members 14a, 14b are made of, for example, rock wool (rock wool). Further, a door stopper rubber 15 that abuts against the end of the first landing door 6 on the side opposite to the door box when the door is completely closed is fixed to the door stopper side vertical frame 3.

The door stop side vertical frame 3 has a vertical frame body 16 and a closing plate 17 fixed to the vertical frame body 16 by a screw or a rivet. An opening 16a that is continuous in the vertical direction is provided in a portion of the vertical frame body 16 opposite to the landing doorway 1. The closing plate 17 is fixed to the vertical frame body 16 so as to close the opening 16 a.

The vertical frame body 16 has a landing doorway facing portion 16b that faces the landing doorway 1, and a vertical frame body hoistway facing portion 16c that is a part of the hoistway facing portion in the hoistway. A bent portion 16d bent at a right angle toward the landing side is provided at an end of the vertical frame main body hoistway facing portion 16c opposite to the landing doorway facing portion 16 b.

The vertical frame heat insulating member 18 is joined to the vertical frame main body hoistway facing portion 16 c. The vertical frame heat insulating member 18 is provided continuously over the entire range of the vertical frame 3 on the door shield side in the vertical direction. The vertical frame heat insulating member 18 is sandwiched between the attachment fittings 19 and the vertical frame body hoistway facing portion 16c by the attachment fittings 19.

The vertical frame heat insulating member 18 is made of, for example, a silica heat insulating member, a gypsum board, a calcium silicate board, or an asbestos board. Further, since the vertical frame body hoistway facing portion 16c is farther from the heat source than the door panels 8 and 11, the heat insulating property of the vertical frame heat insulating member 18 may be lower than the heat insulating property of the door heat insulating members 9 and 12.

The mounting metal 19 has a first end portion 19a located on a side away from the landing doorway facing portion 16b, and a second end portion 19b located on a side close to the landing doorway facing portion 16 b. The first end portion 19a is engaged with and fixed to the bent portion 16 d. The first end portion 19a is fixed to the bent portion 16d by a screw or a rivet. A gap of, for example, about 5mm is secured between the second end 19b and the vertical frame body hoistway facing portion 16 c.

In such a landing doorway device, when the landing doorway facing portion 16b is heated by a fire occurring on the landing side, the heat is transmitted to the vertical frame main body hoistway facing portion 16 c. However, since the vertical frame heat insulating member 18 is attached to the vertical frame body hoistway facing portion 16c, it is possible to prevent the devices in the hoistway from being heated by the heat of the vertical frame body hoistway facing portion 16c and causing a fire. That is, the heat of the landing can be more reliably prevented from being transmitted into the hoistway.

The temperature distribution in the vertical frame body 16 is: the landing doorway facing portion 16b closer to the heat source has the highest temperature, and the temperature decreases as it moves farther from the landing doorway facing portion 16 b. Further, since the mounting metal 19 is fixed to the bent portion 16d by the first end portion 19a away from the landing doorway facing portion 16b and a gap is provided between the second end portion 19b and the vertical frame main body hoistway facing portion 16c, the mounting metal 19 can be prevented from reaching a high temperature.

Embodiment mode 2

Next, fig. 4 is a cross-sectional view of a landing entrance device for an elevator according to embodiment 2 of the present invention, fig. 5 is a cross-sectional view showing an enlarged portion of fig. 4, and fig. 6 is a rear view of a vertical frame on the door shield side in fig. 5 as viewed from the hoistway side. Fig. 4 corresponds to a cross section taken along line II-II in fig. 1. In the figure, the landing door pocket 2 includes a door stop side vertical frame 21, a door box side vertical frame 4, and an upper frame 5.

The door stop side vertical frame 21 is cylindrical and includes a vertical frame body 22 and a closing plate 23 fixed to the vertical frame body 22 by a screw or a rivet. An opening 22a that is continuous in the vertical direction is provided in a portion of the vertical frame body 22 on the side opposite to the landing doorway 1. The closing plate 23 is fixed to the vertical frame body 22 so as to close the opening 22 a.

The vertical frame body 22 has a landing doorway facing portion 22b that faces the landing doorway 1, and a vertical frame body hoistway facing portion 22c that is a portion facing the hoistway facing portion in the hoistway. The vertical frame body hoistway facing portion 22c has the same cross section as the vertical frame body hoistway facing portion 16c of embodiment 1 in order to firmly fix the lower end portion of the vertical frame body hoistway facing portion 22c to a landing sill (not shown) and to ensure the rigidity of the vertical frame body 22 itself. A bent portion 22d bent at a right angle toward the landing side is provided at an end of the vertical frame main body hoistway facing portion 22c opposite to the landing doorway facing portion 22 b. An opening (notch) 22e is provided in the vertical frame body hoistway facing portion 22 c. The openings 22e are continuously provided in the up-down direction.

A vertical frame heat insulating member 24 is provided on the back surface of the vertical frame body hoistway facing portion 22 c. The vertical frame heat insulating member 24 is exposed to the hoistway through the opening 22 e. The vertical frame insulating member 24 is held between the attachment fittings 25 and the edge portions of the opening 22e by the attachment fittings 25 having an コ -shaped cross section. The mounting fitting 25 is engaged with the bent portion 22d and the closing plate 23 and fixed. The other structure is the same as embodiment 1.

In such a landing doorway device, when the landing doorway facing portion 22b is heated by a fire occurring on the landing side, the heat is transmitted to the vertical frame main body hoistway facing portion 22 c. However, since the large opening 22e is provided in the vertical frame body hoistway facing portion 22c, the portion that conducts heat is small. The opening 22e is shielded by the vertical frame heat insulating member 24. Therefore, the equipment in the hoistway can be prevented from being heated by the heat of the vertical frame body hoistway facing portion 22c and causing a fire. That is, the heat of the landing can be more reliably prevented from being transmitted into the hoistway.

The temperature distribution in the vertical frame body 22 is: the landing doorway facing portion 22b closer to the heat source has the highest temperature, and the temperature decreases as it moves away from the landing doorway facing portion 22 b. Further, since the mounting metal 25 is fixed to the bent portion 22d and the closing plate 23 which are away from the landing doorway facing portion 22b, the mounting metal 25 can be prevented from reaching a high temperature. The heat conducted to the mounting metal 25 can be blocked by the vertical frame heat insulating member 24 disposed on the hoistway side of the mounting metal 25.

The opening 22e may be divided into a plurality of openings in the vertical direction.

Embodiment 3

Next, fig. 7 is a cross-sectional view of a landing doorway device for an elevator according to embodiment 3 of the present invention, and fig. 8 is an enlarged cross-sectional view showing a main portion in fig. 7. Fig. 7 corresponds to a cross section taken along line II-II in fig. 1. In the figure, the landing door pocket 2 includes a door stop side vertical frame 31, a door box side vertical frame 4, and an upper frame 5.

The door stop side vertical frame 31 is cylindrical and includes a vertical frame body 32 and a closing plate 33 fixed to the vertical frame body 32 by a screw or a rivet. An opening 32a that is continuous in the vertical direction is provided in a portion of the vertical frame body 32 on the side opposite to the landing doorway 1. The closing plate 33 is fixed to the vertical frame body 32 so as to close the opening 32 a.

The vertical frame body 32 has a landing doorway facing portion 32b that faces the landing doorway 1, and a vertical frame body hoistway facing portion 32c that is a part of the hoistway facing portion in the hoistway. A bent portion 32d bent at a right angle toward the landing side is provided at an end of the vertical frame main body hoistway facing portion 32c opposite to the landing doorway facing portion 32 b. The first vertical frame heat insulating member 34 is joined to the vertical frame main body hoistway facing portion 32 c. The first vertical frame heat insulating member 34 is provided continuously over the entire range of the vertical direction of the door shield side vertical frame 31. The first vertical frame heat insulating member 34 is held between the attachment fitting 35 and the vertical frame body hoistway facing portion 32c by the attachment fitting 35.

The mounting metal 35 has a first end portion 35a located on a side away from the landing doorway facing portion 32b, and a second end portion 35b located on a side close to the landing doorway facing portion 32 b. The first end portion 35a is joined and fixed to the bent portion 32 d. A gap of, for example, about 5mm is secured between the second end portion 35b and the vertical frame body hoistway facing portion 32 c.

The second vertical frame heat insulating member 36 is joined to the back surface of the closing plate 33 which is a part of the hoistway facing portion. The second vertical frame heat insulating member 36 is provided continuously over the entire range of the vertical direction of the door shield side vertical frame 31. The second vertical frame heat insulating member 36 is held between the brackets 37a and 37b and the closing plate 33 by a plurality of brackets 37a and 37b having a substantially zigzag cross section. The brackets 37a, 37b are fixed to the closing plate 33 by screws or rivets.

In such a landing doorway device, when the landing doorway facing portion 32b is heated by a fire occurring on the landing side, the heat is transmitted to the vertical frame main body hoistway facing portion 32 c. However, since the first vertical frame heat insulating member 34 is attached to the vertical frame body hoistway facing portion 32c, it is possible to prevent the devices in the hoistway from being heated by the heat of the vertical frame body hoistway facing portion 32c and causing fire. That is, the heat of the landing can be more reliably prevented from being transmitted into the hoistway.

Further, although the heat of the landing doorway facing portion 32b is also radiated to the inside of the door stop side vertical frame 31, the second vertical frame heat insulating member 36 is attached to the closing plate 33, and therefore the closing plate 33 can be prevented from reaching a high temperature, and the heat of the landing can be more reliably prevented from being transmitted into the hoistway.

In the above example, the vertical frame heat insulating members 18, 24, 34, and 36 are provided only on the door shield side vertical frames 3, 21, and 31, but in the case where the area of the portion facing the inside of the hoistway, that is, the hoistway facing portion of the door box side vertical frame 4 is large, the vertical frame heat insulating member may be provided on the door box side vertical frame 4.

In the above example, the side-open type landing doorway device is shown, but the present invention can also be applied to a mid-split type landing doorway device. However, since the area of the hoistway facing portion of the door-shield-side vertical frames 3, 21, 31 of the normal side-open type landing doorway device is large, it is particularly effective to provide the vertical frame heat insulating member.

Claims (3)

1. A landing entrance device of an elevator, characterized in that,

the landing doorway device for an elevator includes:

a cylindrical vertical frame provided at a side portion of the landing doorway, the vertical frame having a landing doorway facing portion facing the landing doorway and a hoistway facing portion facing the inside of the hoistway;

a vertical frame heat insulating member provided at the hoistway facing portion, the vertical frame heat insulating member being configured to suppress transmission of heat transferred from the landing doorway facing portion to the hoistway facing portion into the hoistway; and

a mounting metal fitting fixed to the vertical frame and sandwiching the vertical frame heat insulating member between the mounting metal fitting and the hoistway facing portion,

the mounting metal fitting has a first end portion located on a side away from the landing doorway facing portion and a second end portion located on a side close to the landing doorway facing portion,

the first end portion is joined and fixed to the vertical frame,

a gap is secured between the second end portion and the hoistway facing portion,

the vertical frame includes: a vertical frame body provided with an opening that is continuous in the vertical direction at a portion on the opposite side of the landing doorway; and a closing plate fixed to the vertical frame body so as to close the opening,

the vertical frame body has the landing doorway facing portion and a vertical frame body hoistway facing portion that is a part of the hoistway facing portion,

a bent portion bent at a right angle toward the landing side is provided at an end portion of the vertical frame main body hoistway facing portion opposite to the landing entrance facing portion,

the first end of the mounting fitting is engaged with and fixed to the bent portion.

2. A landing entrance device of an elevator, characterized in that,

the landing doorway device for an elevator includes:

a cylindrical vertical frame provided at a side portion of the landing doorway, the vertical frame having a landing doorway facing portion facing the landing doorway and a hoistway facing portion facing the inside of the hoistway; and

a vertical frame heat insulating member provided at the hoistway facing portion, for suppressing transmission of heat conducted from the landing doorway facing portion to the hoistway facing portion into the hoistway,

the vertical frame includes: a vertical frame body provided with an opening that is continuous in the vertical direction at a portion on the opposite side of the landing doorway; and a closing plate fixed to the vertical frame body so as to close the opening,

the vertical frame heat insulating member includes a first vertical frame heat insulating member provided to the vertical frame body and a second vertical frame heat insulating member provided to the closing plate.

3. The landing doorway device of an elevator according to claim 1 or 2, wherein,

the landing doorway device for an elevator further comprises a landing door for opening and closing the landing doorway, the landing door comprising a door panel and a door heat insulating member provided on the doorway side of the door panel,

the heat insulation of the vertical frame heat insulating member is lower than the heat insulation of the door heat insulating member.