JP4391249B2 - Fire and smoke prevention equipment at the elevator hall - Google Patents

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 and smoke screen that is wound around the curtain plate above the landing three-way frame descends to close the front of the elevator landing door, (For example, refer to Patent Document 1).

Japanese Patent Laid-Open No. 11-128380

In the case of a conventional fire prevention and smoke prevention device for an elevator hall, in the unlikely event that an elevator car is landed in a hall where the fire prevention and smoke prevention screen is fully closed, a person trapped in the car manually opens the fire prevention and 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, and in the event of a fire, the fire prevention and smoke prevention screen descends to close the front of the elevator hall door and to prevent fire The screen weight is provided on the hoistway side and the landing side at the lower end of the fire and smoke screen, and when the fire and smoke screen is lowered and fully closed in the event of a fire, The screen weight body that keeps airtightness and fireproof performance in contact with each other, and is attached so that it can slide up and down with respect to the screen weight body, and when the screen weight in contact with the landing floor surface is lifted by hot air, etc. and a closure for closing the gap between the screen weight body and the landing floor to drop by, occlusion body hoistway及screen weight body A U-shaped weight cover provided so as to cover the surface on the landing side, and is attached so that only the landing side of the weight cover can slide in the vertical direction with respect to the screen weight main body, and the hoistway of the weight cover When the screen slides along the hoistway side surface of the screen weight body and the screen weight is lifted, the hoistway side of the weight cover partially overlaps with the hoistway side surface of the screen weight body in horizontal projection. is there.

  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 or the like due to 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.

Reference example.
Figure 1 is a perspective view showing an elevator hall in a reference example of the present invention. FIG. 2 is a cross-sectional view showing the upper structure of fire smoke device for an elevator hall in a reference example of the present invention, an elevator in the reference example of FIG. 3 is the invention FIG. 4 is an enlarged cross-sectional view showing the main structure of the fire prevention and smoke prevention device at the landing, FIG. 4 is a cross sectional view of the main portion showing a state in which the fire prevention and smoke prevention screen of the elevator fire prevention and smoke prevention device is fully closed, and FIG. 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-proof screen in a closed state.

In FIG. 1 and FIG. 2, the elevator hall equipped with the fire prevention and smoke prevention device is the landing door device 1, the landing door 2, the landing three-way frame 3, the vertical frame 3a of the landing three-way frame, the curtain plate 3b of the landing three-way frame, and the 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 in the reference example 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 this reference example , 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 1 FIG.
FIG. 6 is an enlarged cross-sectional view showing the main structure of the fire prevention and smoke prevention device for the elevator hall according to Embodiment 1 of the present invention, and FIG. 7 shows a state in which the fire prevention and smoke prevention screen of the fire prevention and smoke prevention device for the elevator hall is fully closed. 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 reference example are denoted by the same reference numerals, and the description thereof is omitted.
In the first embodiment, it is provided with a U-shaped cross section of the weight cover 14 formed by integrally formed with L-shaped cross section of the weight cover 11 and plate-shaped closing plate 12 in the reference example. 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. In the first embodiment, the weight body 9 and the seat plate 10 form a weight body, and the U-shaped weight cover 14 forms a block 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, the safety is improved even when it is sandwiched, compared to the flat closing plate 12 in the reference example . 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 2 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 according to Embodiment 2 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 form 1 and the same or corresponding parts of the embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the second embodiment, similarly to the first 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 2 , 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 hall fire prevention and smoke prevention apparatus constructed 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. And keeps hermetic performance and fireproof performance. 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 3 FIG.
FIG. 11 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 3 of the present invention is fully closed, and FIGS. 12 and 13 show the structure of the screen weight. It is a partial rear view.
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 first and second 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 3 , it extends by extending a part of the 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 configured as described above, the screen is easier to push at the handle portion than in the second 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 4 FIG.
FIG. 14 is a cross-sectional view of the main part showing a state in which the fire and smoke screen of the fire prevention and smoke prevention device for an elevator hall according to Embodiment 4 of the present invention is fully closed, and FIG. 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 form 1 and the same or corresponding parts of the embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the fourth embodiment, as in the first 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 4 , 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 the screen drooping portion 6a, and the screen drooping portion 6a is brought into 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. Although 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 fourth embodiment, so that the airtight performance and the fire resistance performance 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 the reference example of this invention. It is sectional drawing which shows the upper structure of the fire prevention smoke prevention apparatus of the elevator hall in the reference example 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 the reference example 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 the reference example of this invention is 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 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 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 a partial rear view which shows the structure of the screen weight 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 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 a partial rear view which shows the other structural example 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 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 4 of this invention.

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 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 (6)

A screen weight is attached to the lower end of the fire and smoke screen, and when the fire occurs, the fire and smoke screen descends and closes the front of the elevator hall door to form a fire prevention compartment.
The screen weight is
Provided on the hoistway side and the landing side at the lower end of the fire and smoke screen, and when the fire and smoke screen is in a fully closed state when a fire breaks out, it comes into contact with the floor of the landing and is airtight and fire resistant A screen weight body for holding
The screen weight body is attached so as to be slidable in the vertical direction. When the screen weight in contact with the landing floor surface is lifted by hot air or the like, the screen weight body is lowered by its own weight, and the screen weight body and the landing floor surface And a closing body that closes the gap between them ,
The closing body is a U-shaped weight cover provided so as to cover the hoistway side and the landing side surface of the screen weight main body, and only the landing side of the weight cover slides vertically with respect to the screen weight main body. The weight cover is mounted so that the hoistway side of the weight cover slides along the hoistway side surface of the screen weight main body, and when the screen weight is lifted, the hoistway side of the weight cover is moved to the screen weight main body. A fire prevention and smoke prevention device for an elevator hall characterized in that it partially overlaps with the surface of the hoistway side in horizontal projection .   Placed on both sides of the screen with the lower end of the fire and smoke screen sandwiched between them, on the seat plate that constitutes a part of the screen weight, is extended upward from the screen weight body, and the handle portion bent into an L shape The fire prevention and smoke prevention device for an elevator hall according to claim 1, which is formed.   An extension by extending a part of the upper end surface of the seat plate upward to a seat plate that is disposed on both sides of the screen with the lower end portion of the fire and smoke screen sandwiched between them. A fire prevention and smoke prevention device for an elevator hall according to claim 1, wherein a handle hole for a handle is formed in the center of the extension. The elevator hall according to claim 3, wherein the extension portion and the handle hole for the handle are provided so that the formation positions of the upper end surfaces of the seat plates facing each other with the fire and smoke screen sandwiched therebetween are not overlapped. Fire and smoke prevention equipment. 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. The U-shaped weight cover that is lowered by its own weight when the screen weight contacting the landing floor surface by hot air or the like is brought into contact with the inner surface of the U-shaped weight cover. 2. The fire prevention and smoke prevention device for an elevator hall according to claim 1 , wherein the fire prevention and smoke prevention device is brought into contact with the inner surface. 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. 2. The fire prevention and smoke prevention device for an elevator hall according to claim 1, 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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