JP2005201012A - Fireproof and smokeproof equipment of elevator hall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain fireproof and smokeproof equipment of an elevator hall, which can maintain airtight performance and fireproof performance even if a screen weight is lifted by being subjected to hot air etc. from a fire. <P>SOLUTION: The screen weight 8 is attached to a lower end of a fireproof and smokeproof screen 6. The screen 6 descends on the occurrence of the fire, so that a front surface of an elevator hall door can be closed for the formation of a fireproof section. The screen weight 8 is equipped with screen weight bodies 9 and 10 which are provided at the lower end of the fireproof and smokeproof screen, and a closing body 12 or 14 which is attached to the screen weight body in a vertically slidable manner, and which descends by self-weight when the screen weight is lifted, so as to close a gap between the screen weight body and a floor surface of the hall. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fire prevention and smoke prevention device for an elevator hall used when a building fire occurs.

  In a conventional fire prevention and smoke prevention device for an elevator hall, a fire prevention and smoke prevention screen device is accommodated in a curtain plate part above the three-way frame of the hall. When a fire breaks out, it receives a signal from a fire detector, etc., and the fire-proof and smoke-proof screen wound around the curtain plate above the three-way frame of the hall descends to close the front of the elevator hall door and fire A partition is formed (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-128380

In the conventional fire prevention and smoke prevention equipment for elevator halls, in the unlikely event that the fire prevention smoke prevention screen is fully closed, the elevator car will land and the person trapped in the car will manually open the fire prevention smoke prevention screen. When evacuating, there are the following problems.
・ In consideration of safety and evacuation, the screen weight provided at the lower end of the fire and smoke screen is lightened, so the screen weight is lifted by hot air during a fire, and between the screen weight and the landing floor surface. A gap may be formed, and airtightness and fire resistance may be lost.
・ If the fire and smoke screen is opened manually in an emergency, the handle hole in the seat plate of the screen weight is difficult to handle and it is difficult to lift the fire and smoke screen, so the evacuation performance is reduced.

  The present invention has been made to solve the above-described problems, and provides a fire prevention and smoke prevention device for an elevator hall that can maintain airtight performance and fire resistance even when a screen weight is lifted by receiving hot air from a fire. It is to provide.

  In the fire prevention and smoke prevention device of the elevator hall according to the present invention, a screen weight is attached to the lower end portion of the fire prevention and smoke prevention screen, the fire prevention smoke prevention screen descends in the event of a fire, the front of the elevator hall door is closed, and the fire prevention section is closed. The screen weight is attached to the screen weight body provided at the lower end of the fire and smoke screen and slidable in the vertical direction with respect to the screen weight body. When the screen weight is lifted, it is lowered by its own weight. And a closing body that closes a gap between the screen weight main body and the landing floor surface.

  According to the fire prevention and smoke prevention device of the elevator hall according to the present invention, even if the fire prevention and smoke prevention screen receives hot air from a fire and the scrane weight is lifted, the closing body descends and the screen weight main body and the landing floor surface are separated. Since the gap is closed, airtightness and fire resistance are improved. Further, by reducing the mass of the weight, the opening force during evacuation can be reduced, and the evacuation performance is improved.

Embodiment 1 FIG.
1 is a perspective view showing an elevator hall according to Embodiment 1 for carrying out the present invention, FIG. 2 is a cross-sectional view showing an upper structure of a fire prevention and smoke prevention device for the elevator hall according to Embodiment 1 of the present invention, and FIG. FIG. 4 is an enlarged cross-sectional view showing the main structure of the fire prevention and smoke prevention device for an elevator hall according to Embodiment 1 of the present invention, and FIG. FIG. 5 is a cross-sectional view of the main part, and FIG. 5 is a cross-sectional view of the main part showing a state where the screen weight is lifted by hot air or the like in the fire and smoke screen in the fully closed state.

In FIG. 1 and FIG. 2, an elevator hall equipped with a fire and smoke prevention device includes a landing door device 1, a landing door 2, a landing three-way frame 3, a vertical frame 3a for a landing three-way frame, a curtain 3b for a landing three-way frame, and a three-way landing. Fireproof / smoke screen device 4 housed inside the rear surface of the curtain 3b of the frame 3b, the curtain 3b of the hall 3, the floor 5 of the hall, and the fire / smoke screen entangled in the fire / smoke screen device 4 6, a screen descent groove 7 formed in the vertical direction on the vertical frame 3a of the landing three-way frame 3 and a screen weight 8 attached to the lower end of the fireproof and smokeproof screen 6.
As shown in FIGS. 3 to 5, the lower structure of the fire and smoke screen of the fire and smoke prevention apparatus according to Embodiment 1 of the present invention has a screen weight 8 attached to the lower end portion of the fire and smoke screen 6. The screen weight 8 includes a pair of outer weights 9 and a screen-side seat plate 10 which are arranged so as to face each other from both sides with the lower end portion of the fireproof and smokeproof screen 6 interposed therebetween, and a weight on the hoistway side. A weight cover 11 having an L-shaped cross-section covering the front side of the body 9, a flat block plate 12 covering the front side of the weight side 9 on the landing side and provided with an elongated hole (not shown) in the vertical direction; The plate-shaped closing plate 12 is constituted by a fixing screw 13 for fixing the plate-like closing plate 12 through a long hole. Since the flat closing plate 12 is attached so as to be movable up and down by a long hole, the flat closing plate 12 can be lowered by its own weight. In the first embodiment, the weight body 9, the seat plate 10 and the weight cover 11 constitute a screen weight body, and the closing plate 12 constitutes a closing body.

In the fire prevention and smoke prevention screen 6 of the elevator fire prevention and smoke prevention device configured as described above, when a fire occurs, the screen weight 8 contacts the landing floor 5 when fully closed as shown in FIG. However, it retains hermetic performance and fire resistance. Even if the screen weight 8 is lifted up by, for example, hot air or the like when the fireproof and smokeproof screen 6 is fully closed, the gap between the screen weight 8 and the landing floor 5 is reduced by its own weight. As a result, the flat closing plate 12 descending is closed, so that the airtight performance and fire resistance performance of the elevator hall are improved.
In addition, since the mass of the screen weight 8 can be easily reduced, the opening force at the time of evacuation can be reduced, and the evacuation performance is improved. In addition, safety is improved against pinching by the screen weight 8.

Embodiment 2. FIG.
FIG. 6 is an enlarged cross-sectional view showing the main structure of the fire prevention and smoke prevention device for an elevator hall according to Embodiment 2 of the present invention, and FIG. FIG. 8 is a cross-sectional view of the main part showing a state in which the screen weight is lifted by hot air or the like in the fireproof and smokeproof screen in the fully closed state.
In the figure, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the second embodiment, a weight cover 14 having a U-shaped section formed by integrally forming a weight cover 11 having an L-shaped section and a flat closing plate 12 in the first embodiment is provided. . An elongated hole (not shown) in the vertical direction is provided in the front side of the landing side of the U-shaped weight cover 14 and is fixed by a fixing screw 13 through the elongated hole. Therefore, the U-shaped weight cover 14 is configured to be lowered by its own weight. In the second embodiment, the weight body 9 and the seat plate 10 constitute a weight body, and the U-shaped weight cover 14 constitutes a closing body and a part of the weight body.

In the fire prevention and smoke prevention screen 6 of the elevator fire prevention and smoke prevention device configured as described above, when a fire occurs, the screen weight 8 contacts the landing floor 5 in the fully closed state as shown in FIG. However, it retains hermetic performance and fire resistance. Even when the screen weight 8 is lifted by hot air or the like in the fully closed state of the fire / smoke / screen 6 as shown in FIG. 8, the gap between the screen weight 8 and the landing floor 5 is reduced by its own weight. As a result, the U-shaped closing plate 14 descending is closed, so that the airtight performance and fire resistance performance of the elevator hall are improved.
In addition, since the mass of the screen weight 8 can be easily reduced, the opening force at the time of evacuation can be reduced, and the evacuation performance is improved. In addition, safety is improved against pinching by the screen weight 8. In particular, according to the U-shaped weight cover 14, safety is improved even when it is sandwiched, compared to the flat closing plate 12 in the first embodiment. Moreover, since the weight body 9 is not seen at all when the screen weight 8 is viewed from the lower side, the hall design is improved.

Embodiment 3 FIG.
FIG. 9 is a cross-sectional view of the main part showing a state in which the fire and smoke screen of the elevator hall fire and smoke prevention device in Embodiment 3 of the present invention is fully closed, and FIG. 10 is a partial rear view showing the structure of the screen weight. FIG.
In the figure, the same or corresponding parts as those of the second embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the third embodiment, as in the second embodiment, a weight cover 14 having a U-shaped cross section is provided. A vertical hole (not shown) is provided on the side surface on the landing side of the U-shaped weight cover 14 and is fixed by a fixing screw 13 through the long hole. Therefore, the U-shaped weight cover 14 is configured to be able to descend by its own weight. And in Embodiment 3, the center part of the upper end surface of the seat board 10 arrange | positioned on both sides | surfaces of the screen 6 is further extended upwards on both sides of the lower end part of the fire prevention smoke prevention screen 6, and it is L-shaped. The handle 15 is formed by bending it into two. Although the handle 15 is provided at the center of the upper end surface of the seat plate 10, it may be provided at two locations on the left and right sides by sorting at the center.

  In the fire prevention and smoke prevention screen 6 of the elevator fire prevention and smoke prevention device configured as described above, the screen weight 8 is in contact with the landing floor 5 when a fire occurs in the fully closed state as shown in FIG. However, it retains hermetic performance and fire resistance. Further, when the fire and smoke screen 6 is manually opened in an emergency state, the seat plate 10 portion of the screen weight 8 is extended and the handle 15 bent in an L shape is provided. The screen weight 8 can be easily lifted, and the evacuation performance is improved. Moreover, since the handle 15 cannot be seen when the weight is viewed from the lower side, the design is not deteriorated.

Embodiment 4 FIG.
FIG. 11 is a cross-sectional view of a main part showing a state in which the fire and smoke screen of the elevator hall fire and smoke prevention apparatus according to Embodiment 4 of the present invention is fully closed, and FIGS. 12 and 13 show the structure of the screen weight. FIG.
In the figure, the same or corresponding parts as those of the third embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In the fourth embodiment, as in the second and third embodiments, a weight cover 14 having a U-shaped cross section is provided. A vertical hole (not shown) is provided on the side surface on the landing side of the U-shaped weight cover 14 and is fixed by a fixing screw 13 through the long hole. Therefore, the U-shaped weight cover 14 is configured to be able to descend by its own weight. And in Embodiment 4, it extends by extending a part of upper end surface of the seat board 10 arrange | positioned on both sides | surfaces of the screen 6 further on both sides of the lower end part of the fire prevention smoke prevention screen 6 in between. 16 and a handle hole 17 for a handle is formed in the center of the extension 16. The extension portion 16 and the handle hole 17 are provided so that the formation positions of the upper end surfaces of the seat plate 10 facing each other with the fire prevention smoke prevention screen 6 interposed therebetween are not overlapped. Further, as shown in FIG. 13, the center portion of the upper end surface of the seat plate 10 is further extended upward to provide an extension portion 16, and a handle hole 17 for a handle is formed in the center portion of the extension portion 16. Good.

  In the fire prevention and smoke prevention screen 6 of the fire prevention and smoke prevention device of the elevator hall constructed as described above, the screen is easier to press at the handle portion than in the third embodiment by shifting the handle position between the front surface and the back surface. Easier to apply and easy to lift the screen weight, improving evacuation performance.

Embodiment 5 FIG.
FIG. 14 is a cross-sectional view of the main part showing a state in which the fire and smoke screen of the elevator hall fire and smoke prevention apparatus according to Embodiment 5 of the present invention is fully closed, and FIG. 15 is a fire and smoke prevention screen in the fully closed state. FIG. 4 is a cross-sectional view of a main part showing a state in which the screen weight is lifted by hot air or the like.
In the figure, the same or corresponding parts as those of the second embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the fifth embodiment, as in the second embodiment, a weight cover 14 having a U-shaped cross section is provided. The U-shaped weight cover 14 is provided with a vertical hole (not shown) on the front side on the landing side, and is fixed with a fixing screw 13 through the long hole. Therefore, the U-shaped weight cover 14 is configured to be lowered by its own weight. And in Embodiment 5, the screen weight main body provided in the lower end part of the fire prevention smoke prevention screen 6 is provided a little above the lowest end part. As a result, the lower end portion of the fireproof and smokeproof screen 6 protrudes from the lower surface of the screen weight main body to provide a screen drooping portion 6 a, and this screen drooping portion 6 a is in contact with the inner surface of the U-shaped weight cover 14.

  In the fireproof and smokeproof screen 6 of the elevator hall fireproof and smokeproof device configured as described above, the screen weight 8 contacts the landing floor 5 when a fire occurs and when it is in a fully closed state as shown in FIG. However, since the airtight performance and the fire resistance performance are maintained, the screen hanging portion 6a is in contact with the inner surface of the U-shaped weight cover 14 in the fifth embodiment. The airtightness and fire resistance are further improved. In addition, even when the screen weight 8 is lifted by hot air or the like in the fully closed state of the fire / smoke / screen 6 as shown in FIG. 15 for example, a gap between the screen weight 8 and the landing floor 5 is formed. The U-shaped closing plate 14 that descends due to its own weight closes, and the lower end of the screen drooping portion 6a contacts the inner surface of the lowered U-shaped weight cover 14, so that the elevator hall The airtightness and fire resistance are further improved.

It is a perspective view which shows the elevator hall in Embodiment 1 for implementing this invention. It is sectional drawing which shows the upper structure of the fire prevention smoke prevention apparatus of the elevator hall in Embodiment 1 of this invention. It is an expanded sectional view which shows the principal part structure of the fire prevention and smoke prevention apparatus of the elevator hall in Embodiment 1 of this invention. It is sectional drawing of the principal part which shows the state which the fire prevention smoke prevention screen of the fire prevention smoke prevention apparatus of the elevator platform in Embodiment 1 of this invention has closed fully. It is sectional drawing of the principal part which shows the state in which the screen weight was lifted by the hot air etc. in the fire prevention smoke screen in a fully closed state. It is an expanded sectional view which shows the principal part structure of the fire prevention and smoke prevention apparatus of the elevator hall in Embodiment 2 of this invention. It is sectional drawing of the principal part which shows the state which the fire prevention smoke prevention screen of the fire prevention smoke prevention apparatus of the elevator hall in Embodiment 2 of this invention has fully closed. It is sectional drawing of the principal part which shows the state in which the screen weight was lifted by the hot air etc. in the fire prevention smoke screen in a fully closed state. It is sectional drawing of the principal part which shows the state which the fire prevention smoke prevention screen of the fire prevention smoke prevention apparatus of the elevator platform in Embodiment 3 of this invention has closed fully. It is a partial rear view which shows the structure of the screen weight in Embodiment 3 of this invention. It is sectional drawing of the principal part which shows the state which the fire prevention smoke prevention screen of the fire prevention smoke prevention apparatus of the elevator hall in Embodiment 4 of this invention has closed fully. It is a partial rear view which shows the structure of the screen weight in Embodiment 4 of this invention. It is a partial rear view which shows the other structural example of the screen weight in Embodiment 4 of this invention. It is sectional drawing of the principal part which shows the state which the fire prevention smoke prevention screen of the fire prevention smoke prevention apparatus of the elevator hall in Embodiment 5 of this invention has closed fully. It is sectional drawing of the principal part which shows the state which the screen weight lifted by the hot air etc. in the fire prevention smoke prevention screen in the fully closed state of the fire prevention smoke prevention apparatus of the elevator hall in Embodiment 5 of this invention.

Explanation of symbols

1 landing door device 2 landing door 3 landing three-sided frame 3a three-sided frame vertical frame 3b three-sided frame curtain plate 3c three-sided frame top frame 4 fireproof smoke-proof screen device 5 landing floor surface 6 fireproof smoke-proof screen 6a screen dripping part 7 Screen descent groove 8 Screen weight 9 Weight body 10 Seat plate 11 L-shaped weight cover 12 Closing plate 13 Fixing screw 14 U-shaped weight cover 15 L-shaped handle 16 Extension part 17 Hand hole

Claims (7)

In the fire prevention and smoke prevention device of the elevator hall where a screen weight is attached to the lower end portion of the fire prevention and smoke prevention screen, and when the fire occurs, the fire prevention smoke prevention screen descends to close the front of the elevator hall door and form a fire prevention section.
The screen weight is
A screen weight body provided at the lower end of the fire and smoke screen;
It is attached so that it can slide up and down with respect to the screen weight main body, and when the screen weight is lifted, it is lowered by its own weight and closes the gap between the screen weight main body and the landing floor surface,
A fire prevention and smoke prevention device for an elevator hall characterized by comprising:   2. The fire prevention and smoke prevention device for an elevator hall according to claim 1, wherein the closing member is a flat closing plate.   2. The fire prevention and smoke prevention device for an elevator hall according to claim 1, wherein the closing body is a U-shaped weight cover.   2. The fire prevention and smoke prevention device for an elevator hall according to claim 1, wherein a part of the screen weight is extended upward from the screen weight main body and bent into an L shape to form a handle portion.   2. The fire prevention and smoke prevention device for an elevator hall according to claim 1, wherein a part of the screen weight is extended upward from the screen weight main body, and a handle hole is formed in the extended portion. 6. The fire prevention and smoke prevention device for an elevator hall according to claim 5, wherein the positions of the handle holes are shifted between the front and back surfaces of the fire and smoke prevention screen.   The screen weight body provided at the lower end portion of the fire and smoke screen is provided slightly above the lower end portion, so that the lower end portion of the fire and smoke screen is projected from the lower surface of the screen weight body to provide a screen hanging portion. 4. The fire prevention and smoke prevention device for an elevator hall according to claim 3, wherein the drooping portion of the screen is brought into contact with the inner surface of the U-shaped weight cover.

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