HK1080441B - Door device of elevator - Google Patents

Description

Door device of elevator

Technical Field

The present invention relates to an improvement in a door device for preventing smoke from flowing into a hoistway from an entrance of an elevator hall or from flowing out to the elevator hall side from the hoistway. In the following description, the expression "smoke intrusion" means either or both of inflow and outflow of smoke.

Background

As a conventional apparatus, the apparatuses shown in fig. 3 to 5 are proposed. Fig. 3 is a front view of a conventional door device for an elevator, fig. 4 is a view taken along line a-a of fig. 3, and fig. 5 is a view taken along line B-B of fig. 3.

In these figures, reference numeral 101 denotes a landing door that opens to both sides at an entrance of an elevator landing, 102 denotes a vertical frame of the entrance, 103 denotes an upper frame of the entrance, and 104 denotes a door fence, and an opening of the entrance of the landing is surrounded by the vertical frame 102, the upper frame 103, and the door fence 104. 105a is a smoke barrier material provided on the side of the door 101 to block the gap between the door 101 and the vertical frame 102, 105b is a smoke barrier material to block the gap between the door 101 and the upper frame 103, and 105c is a smoke barrier material inserted into the groove 104a of the door fence 104 to block the gap. Further, 106 are screws for attaching the smoke barriers 105a, 105b, and 105 c.

In the door device having such a configuration, the gaps between the vertical doorway frame 102, the upper doorway frame 103, and the door fence 104 are closed by the smoke barriers 105a, 105b, and 105c provided around the door 101 when the door is closed, so that smoke is not caused to flow into the hoistway and to diffuse to the corridors of other floors through the hoistway even in the case of a fire (see, for example, japanese laid-open utility model publication No. 50-79184 and japanese laid-open property publication No. 63-112389).

However, in the conventional apparatus, since the smoke barriers 105a, 105b, and 105c are always in contact with the facing members, the smoke barriers are worn out by normal opening and closing of the door, and as a result, proper maintenance is required. In addition, it is very difficult to smoothly open and close the loading and unloading door 101, and sliding sound is often generated.

In recent elevators, an elevator without a machine room, that is, an elevator in which a machine serving as a fire source such as a drive motor or a control panel is disposed in a hoistway (so-called no-machine-room elevator) has been added, and measures for appropriately preventing the intrusion of smoke even if the direction of the intrusion comes from either one of a landing place and a hoistway in accordance with the case where the machine serves as a fire source in a building at the time of a fire have been required. In addition, in the conventional apparatus, as shown in fig. 6, three or more members face each other in a gap 107 or a portion indicated by an arrow in fig. 18 corresponding to a portion of the door above and below the landing door 101, and thus there is no provision for blocking the gap and appropriately preventing smoke from entering.

The present invention has been made in view of the above problems, and an object thereof is to provide an elevator door device having excellent smoke barrier performance, which does not cause any trouble particularly when a normal door is opened or closed.

Disclosure of Invention

The invention is in the elevator comprising an entrance frame and a landing door, wherein the entrance frame is arranged on the entrance of the lifting passage from the landing place, and is composed of an upper frame and a vertical frame, the landing door is arranged on the entrance frame at intervals and is guided by a door fence, and a door device for opening and closing the opening part of the entrance frame is provided with a smoke barrier member for preventing the invasion of smoke on at least one of the upper part, the side part and the bottom part of the landing door or the opposite parts opposite to the upper part, the side part and the bottom part of the landing door.

In addition, the present invention is an elevator comprising an entrance frame provided at an entrance to an ascending/descending path from an entrance field, and including an upper frame and a vertical frame, and an ascending/descending door including a high-speed door and a low-speed door which are disposed at a distance from each other on the entrance frame and guided by a gate rail to open/close an opening of the entrance frame, wherein a smoke barrier member for preventing smoke from entering is provided on at least one of upper portions, side portions, and bottom portions of the high-speed door and the low-speed door, or facing members facing the upper portions, side portions, and bottom portions of the high-speed door and the low-speed door.

Drawings

Fig. 1 is a perspective view showing an overall structure of a door device of an elevator.

Fig. 2 is a plan view showing a gate device 1 according to an embodiment of the present invention.

Fig. 3 is a front view of a conventional smoke barrier device for an elevator landing area.

Fig. 4 is an a-a line view of fig. 3.

Fig. 5 is a view along the line B-B of fig. 3.

Fig. 6 is a drawing for explaining a problem point of the prior art.

Figure 7 is a partial front view of the lower portion of the door assembly of figure 2.

Figure 8 is a partial front view of the upper portion of the door assembly of figure 7.

Fig. 9 is an enlarged view of a portion P of fig. 2.

Fig. 10 is an enlarged view of a portion Q of fig. 7.

Fig. 11 is a view along the line a-a of fig. 7.

Fig. 12 is a view along the line B-B of fig. 7.

Fig. 13 is a C-C line view of fig. 7.

Fig. 14 is an enlarged view of the portion R of fig. 8.

Fig. 15 is a view along the line D-D of fig. 14.

Fig. 16 is an exploded enlarged perspective view and a partial front view showing a relationship between the entrance and exit door, the vertical frame, and the upper frame.

Fig. 17 is a drawing corresponding to fig. 15 showing another embodiment of the present invention.

Fig. 18 is a drawing for explaining a problem point of the prior art.

Fig. 19 is another exploded enlarged perspective view and a partial front view showing a relationship between the entrance and exit door, the vertical frame, and the upper frame.

Fig. 20 is a plan view showing a gap between the door and the upper frame and a gap between the doors.

Fig. 21 is a side view showing a gap between the door and the upper frame.

Fig. 22 is a side view illustrating the entrance path of smoke blocked by the holder.

Fig. 23 is a perspective view illustrating that the gap between the doors is closed by the shielding material.

Fig. 24 is a front view showing a gate device 2 embodiment of the present invention.

Fig. 25 is an enlarged view of the line a-a of fig. 24.

Fig. 26 is an enlarged view of the line B-B of fig. 24.

Fig. 27 is a C-C line view of fig. 24.

Fig. 28 is an enlarged view of a portion Z of fig. 27.

Fig. 29 is a view along the line D-D of fig. 27.

Fig. 30 is an E-E line view of fig. 24.

Fig. 31 is a partial view taken along line F-F of fig. 27.

Fig. 32 is a perspective view showing a relationship between the high-speed door and the upper frame and the vertical frame.

Fig. 33 is a top view of fig. 32.

Fig. 34 is a perspective view showing the relationship between the upper frame and the upper portions on the low-speed door and the high-speed door sides.

Fig. 35 is a perspective view and a partially enlarged view showing a relationship between the low speed door and the upper and vertical frames.

Fig. 36 is a diagram illustrating the effect of the present embodiment.

Fig. 37 is a diagram showing another configuration example of the present embodiment.

Fig. 38 is an overall view of a locking device according to embodiment 3 of the door device of the present invention.

Fig. 39 is a view along the line B-B of fig. 38.

Fig. 40 is a diagram illustrating an operation of the locking device.

Fig. 41 is a partial front view showing a door device of the present invention.

Fig. 42 is a left side view of fig. 40.

Fig. 43 is a front view showing another embodiment of the gate device.

Fig. 44 is a right side view of fig. 33.

Fig. 45 is a front view showing another configuration example of the door closing force increasing device.

Fig. 46 is a front view showing another configuration example of the door-closing force increasing device.

Fig. 47 is a sectional view showing the smoke barrier mechanism.

Fig. 48 is a sectional view showing an upper structure of the smoke barrier mechanism.

Fig. 49 is a sectional view of the smoke barrier provided at the upper portion.

Fig. 50 is a sectional view showing a lower structure of the smoke barrier mechanism.

Fig. 51 is a sectional view of a smoke barrier provided at a lower portion.

Detailed Description

Example 1

Hereinafter, an elevator door device 1 according to an embodiment of the present invention will be described with reference to the drawings.

In the elevator shown in fig. 1, an upper frame 103 and a pair of left and right vertical frames 102, 102 are provided so as to surround an opening portion that leads from an elevator hall to an elevator shaft, and a pair of left and right half-open elevator doors 110, 110 that open from the center to both sides are provided in the opening portion. The doors 110 and 110 are hung from a pair of hangers 109 and 109 engaged with the slide rail 4 so as to be movable back and forth. A door fence 104 is provided on the lower edge of the opening, and the lower ends of the doors 110 and 110 are slidably fitted in the door fence 104.

Fig. 2 is a plan view showing a gate device of the present embodiment, fig. 7 is a partial front view of a lower portion of the gate device in fig. 2, fig. 8 is a partial front view of an upper portion of the gate device in fig. 7, fig. 9 is an enlarged view of a P portion of fig. 2, fig. 10 is an enlarged view of a Q portion of fig. 7, fig. 11 is a view taken along line a-a of fig. 7, fig. 12 is a view taken along line B-B of fig. 7, fig. 13 is a view taken along line C-C of fig. 7, fig. 14 is an enlarged view of an R portion of fig. 8, fig. 15 is a view taken along line D-D of fig. 14, and fig. 16 is an exploded enlarged perspective view and a partial front view.

In the drawings, the same reference numerals as those in fig. 3 to 6 denote the same parts. Shown in fig. 8 as 110 is a door hung on the door hanger 109, and 110a (reference numeral in fig. 2, 7, 9, 10, 12) is a guide block guided by the groove 104a of the door sill 104 and is mounted on the bottom of the door 110 via a bracket 110b (reference numeral in fig. 12). A smoke barrier 111 shown in fig. 10 and 11 is made of flame-retardant rubber and includes a pair of left and right projecting pieces that are expanded toward the front ends, and is fitted into the recess via a bracket 110c, attached to the bottom of the landing door 110, and provided at a portion other than the attachment portion of the guide block 110 a. Although not shown in the landing door 110, it is known that a door closing force by a weight is always applied.

112, 112' shown in fig. 10 and 13 are rubber door stoppers having the function of a smoke barrier material provided on the side portions of the landing door 110, and hang down into the groove 104a of the gate 104 below, i.e., to a position covering the end of the smoke barrier material 111. That is, the rubber door stoppers 112 and 112' and the smoke barrier 111 are disposed in a state of being in contact with each other, for example, on the same vertical plane. Such rubber door stoppers 112 and 112' are formed with a concave portion on one side and a convex portion on the other side, for example, so as to be in close contact with each other without a gap when the landing door 110 is closed.

Since the front ends of the pair of left and right projecting pieces of the smoke barrier 111 are bent without contacting the side walls of the door fence groove 104a when the door is opened and closed, abrasion of the front ends of the smoke barrier 111 can be suppressed during normal opening and closing, and during a fire, air on the side of the fire chamber expands and air containing high-pressure smoke attempts to be discharged through the lower portion of the door, but when air flows into the smoke barrier 111 provided at the lower end of the door, the projecting pieces of the smoke barrier on the side of the non-fire chamber are pressed against the side walls of the door fence groove 104a, and therefore, sufficient airtightness can be reliably ensured in accordance with the flow direction of the smoke. Here, when the landing door 110 is closed, the rubber door stoppers 112 and 112' and the smoke barrier 111 are appropriately brought into contact with each other by the closing force, and the gap below can be closed in addition to the above-described action and effect. The smoke barrier 111 may be formed in such a shape that the front ends of the pair of left and right projecting pieces are slightly bent inward. After the left and right landing doors 110 are closed, the smoke barrier members 111 provided in the landing doors 110 are brought into contact with each other appropriately, whereby the rubber door stoppers 112 and 112' can be prevented from drooping.

On the other hand, 113 and 113 'shown in fig. 14 are smoke barriers provided at the upper end of the landing door 110, and like the rubber door stoppers 112 and 112', a concave portion is formed on one and a convex portion is formed on the other, and they can be contacted with each other without a gap, so that the landing door 110 is tightly adhered to each other by a closing force when it is closed. Further, the rubber door stoppers 112 and 112 'and the smoke barrier 113 disposed at the positions contacting the rubber door stoppers 112 and 112' reliably eliminate the upper gap when the landing door 110 is closed. Therefore, not only the gap between the landing doors 110 but also the gap between the upper and lower portions can be appropriately closed by the closing force when the landing doors 110 are closed. As for the structure that can be contacted without a gap, various structures other than the fitting of the concave portion and the convex portion are conceivable, and the structure is not limited to the embodiment.

Further, a smoke barrier 120 shown in fig. 8 and 15 is, for example, a hollow smoke barrier detachably fitted in a U-shaped groove bracket 114 provided obliquely at the upper end of the landing door 110, and is obliquely disposed so as to be higher as it is separated from the vertical frame 102. The shutter 121 is a shutter that is provided to be adjustable in the vertical direction with respect to the upper frame 103, and is attached to come into contact with the smoke barrier 120 when the landing door 110 is closed, thereby closing the gap. The baffle 121 is also obliquely disposed so as to increase in height as it moves away from the vertical frame 102. Here, when the left and right landing doors 110 are closed, the smoke barriers 113 and 113' are eliminated by the contact of the smoke barriers 120 provided on the opposite landing doors 110.

Fig. 16(a) is an exploded perspective enlarged view showing a relationship between the entrance door 110, the vertical frame 102, and the upper frame 103, and fig. 16(b) is a partial front view of fig. 16 (a). In the figure, 115 is an L-shaped bracket provided on a side surface of the landing door 110, and a bracket 131 having a smoke barrier 130 is attached to the bracket 115 (the smoke barrier 130 is detachably fitted into a U-groove bracket 132 provided on the bracket 131), and the smoke barrier 120 and the smoke barrier 130 are attached to be in contact with each other at ordinary times by adjusting in the width direction of the landing door 110 through a long hole 115 a. That is, the smoke barrier 120 and the smoke barrier 130 are preferably disposed on the same vertical plane. Reference numeral 122 denotes a bracket provided to extend upward on the vertical frame 102, and since the upper frame 103 is placed on the vertical frame 102 so as to cover the upper side of the vertical frame 102, the bracket 122 is disposed so as to cover a part of the side surface of the upper frame 103. 140 is a cover covering the smoke barrier 130. When the landing door 110 is closed, the smoke barrier 130 is pressed against one surface of the holder 122, and the gaps between the landing door 110 and the vertical frames 102 and the upper frame 103 are appropriately closed by the smoke barrier 120 and the smoke barrier 130.

In addition, as another embodiment, for example, a structure shown in fig. 19 can be considered. That is, since the L-shaped brackets 115 ', the brackets 113', and the smoke barrier 130 are only as high as the vertical frame 102, the side surface of the upper frame 103 and the upper surface of the vertical frame 102 are covered with the rubber-attached L-shaped bracket 133 (for example, the smoke barrier 120 and the smoke barrier 130 are arranged on the same plane) and the gap is eliminated.

Therefore, when the left and right landing doors 110 are closed, the gap between the vertical frame 102 and the landing door 110 is closed by the smoke barrier 130, the gap between the upper frame 103 and the landing door 110 is closed by the smoke barrier 120, the gap between the landing doors 110 is closed by the rubber door stoppers 112 and 112 ', the gap between the landing doors 110 and the door rail 104 is closed by the smoke barrier 111 and the rubber door stoppers 112 and 112', and the gap between the landing doors 110 and the upper frame 103 is closed by the rubber door stoppers 112 and 112 'and the smoke barriers 113 and 113' or the smoke barrier 120, so that it is possible to reliably prevent smoke from flowing into the ascending/descending passage from the landing place or flowing out to the landing place side from the ascending/descending passage.

The materials and shapes of the smoke barrier materials 120 and 130 and the smoke barrier material 111 may be determined in consideration of their respective functions, properties, and the like. That is, in the case of the smoke barrier 130, since only the surface is pressed, only the smoke barrier performance is satisfied, and it is not necessary to consider movement due to friction. On the other hand, in the case of the smoke barrier 111, since the smoke barrier constantly moves relative to the door rail 104 in accordance with the opening and closing operation of the door, it is necessary to consider not only smoke barrier performance but also friction (vibration, noise countermeasure, and the like), and a function of performing smooth sliding operation is required. Further, in the case of the smoke barrier 120, since friction due to relative movement with the shutter 121 is also received when the door is closed, a function of enabling smooth sliding operation is required, although not to the same extent as the smoke barrier 111. That is, it is desirable to have both smoke barrier performance and sliding performance.

In the case of a fire, particularly due to a change in air temperature or air pressure, it is effective that the hollow portion is slightly expanded in the case of a member that deforms due to such a change in air temperature/air pressure difference, for example, the smoke barrier 120, 130, or that the pair of protruding pieces deform in the smoke flowing direction in the case of the smoke barrier 111. In addition to the case where the shape of the smoke barrier changes according to the air pressure difference, for example, a member (U-shaped groove holder or the like) configured to movably support the smoke barrier can obtain the same effect. In addition, the smoke leakage amount is 0.2m when the pressure difference between both sides of the door is 19.6Pa according to the regulations relating to smoke-blocking performance³/min×m²Since the following does not require a complete smoke barrier property, it is not necessary to completely adhere the members to each other.

Fig. 17 shows a case where the same member as the smoke barrier 111 is used as the smoke barrier 112'. It is preferable to use the components as commonly as possible because the number of components can be reduced accordingly. However, it is needless to say that the material and shape may be appropriately selected depending on the properties, action, and function required for the component.

In the above-described embodiment 1, even if there is a gap between the upper frame 103 and the door 110 shown in fig. 20 and 21, and smoke enters the elevator from the gap, the smoke passage shown by hatching in fig. 22 is blocked by the brackets 122 and 133 shown in fig. 16 and 19, and therefore smoke does not leak to the left and right. Further, although there is a gap G (about 2mm) between the doors 110, smoke does not leak upward because the gap is closed by the smoke barriers 113, 113' shown in fig. 23.

Further, according to embodiment 1, there is little concern that an obstacle such as vibration or noise may occur when the normal door is opened or closed, and when the door is closed, the gap between the entrance/exit door and the doorsill is reliably closed according to the current situation, so that it is possible to appropriately prevent smoke from entering whenever a fire breaks out. In addition, it is not necessary to provide a special driving mechanism or device for such smoke blocking and preventing functions. And has the advantage of being able to be added to existing elevators.

Example 2

Hereinafter, embodiment 2 of the present invention will be described with reference to the drawings.

Fig. 24 is a front view showing an example of an elevator hall door according to the present invention, fig. 25 is an enlarged view taken along line a-a of fig. 24, fig. 26 is an enlarged view taken along line B-B of fig. 24, fig. 27 is a view taken along line C-C of fig. 24, fig. 28 is an enlarged view taken along line Z of fig. 27, fig. 29 is a view taken along line D-D of fig. 27, fig. 30 is a view taken along line E-E of fig. 24, fig. 31 is a partial view taken along line F-F of fig. 27, fig. 32 is a perspective view showing a relationship between a high speed door 311 and an upper frame 301 and a vertical frame 302, fig. 33 is a plan view of fig. 32, fig. 34 is a perspective view showing a relationship between an upper portion of a low speed door 312 on the side of the high speed door 311 and the upper frame 301, and fig. 35 is a perspective view and a partial enlarged view showing a relationship between.

Shown in fig. 24 are 311 and 312, which are single-opening type landing doors hung on the door hangers 307 and 308, respectively, and are a high-speed door 311 moving at a high speed and a low-speed door 312 moving at a low speed, and respective guide blocks 311a and 312a are guided by grooves 305a and 305b of the door sill 305 of fig. 26, respectively. Although not shown, the landing doors 311 and 312 are configured to always apply a door closing force by a weight or a spring. Here, the lower portion of the door 312 is configured such that the bending processing of the end portion on the opposite side of the door 311 is small for reasons described later.

In fig. 27 and 32, 313 is a rubber door stop provided on the door 311 on the side opposite to the door 312, 314 is a rubber door stop provided on the vertical frame 302 so as to face the rubber door stop 313, and a concave portion is formed on one of the rubber door stops 313 and 314 and a convex portion is formed on the other so that the rubber door stops are tightly adhered to each other in a close-fitting manner, and the rubber door stops can be brought into contact without a gap so as to have a smoke-blocking effect. As for the structure capable of being in contact without a gap, various structures other than merely fitting of the concave portion and the convex portion may be considered, and the structure is not limited to the embodiment.

Shown in fig. 27 and 28 as 315 is a smoke barrier material provided on the outer surface of the high-speed door 311 on the low-speed door 312 side via a bracket 315a, which comes into contact with the door 312 to block the gap 301s when the landing door is closed. The end of the door 312 opposite to the door 311 is bent less (to one dimension 1)₁Dimension 1, size 1₂Is 1₁＞1₂) So that the smoke barrier 315 does not contact the door 312 when the landing door is opened. That is, the thickness of the left and right sides of the door 312 is thinner on the side opposite to the door 311. The smoke barrier 341 described later is provided on the outer surface of the door 312 on the side opposite to the door 311, and contacts the vertical frame 302 when the ascending/descending door is closed to close the gap 302 a.

317 and 318 shown in fig. 26 are smoke barriers made of flame-retardant rubber having a pair of left and right projecting pieces extending toward the front ends, and are attached to the parts other than the attaching parts of the guide blocks 311a and 312a shown in fig. 24 so as to be fitted into the lower end recesses of the doors 311 and 312. Since the tips of the pair of left and right projecting pieces of the smoke barrier 317 and 318 can be bent without contacting the side walls of the door fence grooves 305a and 305b when the door is opened and closed, abrasion of the tips of the smoke barrier 317 and 318 can be suppressed during normal opening and closing, and air containing high-pressure smoke tends to be discharged through the lower portion of the door although air on the fire room side expands during a fire, but when air flows into the smoke barrier 317 and 318 provided at the lower end of the door, any one of the projecting pieces of the smoke barrier on the non-fire room side is pressed against the side walls of the door fence grooves 305a and 305b, and sufficient airtightness is reliably ensured in accordance with the flow direction of smoke. The smoke barrier 317, 318 may be formed in such a shape that the front ends of a pair of left and right protruding pieces are slightly bent inward.

Reference numerals 321 and 322 shown in fig. 25 are, for example, hollow smoke barriers, which are detachably fitted into U-shaped groove brackets 323 and 324 of fig. 24 provided obliquely above doors 311 and 312, respectively, and are obliquely disposed so as to be higher closer to the closing side of the doors. Further, in particular, the U-groove bracket 323 and the smoke barrier 321 are disposed in the notch 312b of the door 312. 325. A shutter 326 is provided to be vertically adjustable with respect to the upper frame 103, and is attached to come into contact with the smoke barriers 321 and 322 when the doors 311 and 312 are closed, thereby closing the gaps 303s and 304 s. Such baffles 325, 326 are also configured to be slanted as shown in fig. 24.

In fig. 32, reference numeral 327 denotes a flat plate for closing an end of the baffle 325, 328 denotes a base provided in contact with the flat plate 327, and a rubber door stopper 329 is attached to the base 328. When the door 311 is closed, the rubber shutters 313 and 314 are in close contact with each other, but as shown in fig. 33, a gap 303s is present between the door 311 and the vertical frame 302 in the vertical direction, and the rubber shutter 329 covers the gap 303s, so that the gap 303s can be appropriately closed. Although the rubber door stopper 329 has been described as an example using the same members as those of the rubber door stoppers 313 and 314, it may be a flat plate.

A flat plate 330 shown in fig. 27, 31, and 34 is a flat plate that blocks the end portions of the smoke barrier 322, the baffle 326, and the U-shaped groove holder 324 when the door 312 is closed, and is provided on the upper frame 301 via an L-shaped holder 331. 332 shown in fig. 27, 28, 29 and 30 is a flat plate having an elastic body attached to the notch portion of the bracket 315a on the outer surface on the lower end side of the door 311, and has a function of closing the gap 305s below the smoke barrier 315 when the door 311 is closed. Further, a flat plate 333 having an elastic body with the same shape and structure as the flat plate 332 is similarly provided in a cutout portion of a bracket 340 (described later) on the outer surface on the lower end side of the door 312, and blocks a lower gap 306a in a smoke barrier 341 described later when the door 312 is closed. The shape and structure of such flat plates 332, 333 may be changed depending on the situation at the time. And the mounting location is not limited to the embodiment.

Shown at 340 in fig. 35 is an L-shaped bracket provided on the outer surface of the side portion of the door 312, on which bracket 340a bracket 342 having a smoke barrier 341 is mounted (the smoke barrier 341 is removably fitted into a U-groove bracket 343 provided on the bracket 342), freely adjustable in the width direction of the door 312 by an elongated hole 340a, and mounted so that the smoke barrier 322 and the smoke barrier 341 are in contact at ordinary times. That is, it is preferable that the smoke barrier 322 and the smoke barrier 341 are disposed on the same vertical plane.

344 is a bracket provided to extend upward on the vertical frame 302, and since the upper frame 301 is placed on the vertical frame 302 so as to cover the vertical frame 302, the bracket 344 is disposed so as to cover a part of the side surface of the upper frame 301. Further, 350 is a cover covering the smoke barrier 341. When the door 312 is closed, the smoke barrier 341 is pressed against one surface of the bracket 344, and the gap 307s between the door 312 and the vertical frame 302 and the upper frame 301 is appropriately closed by the smoke barrier 322 and the smoke barrier 341.

Therefore, when the landing doors 311 and 312 are closed, the gap between the vertical frame 302 and the door 311 is closed by the rubber door stopper 313 and the rubber door stopper 314 by the rubber door stopper 329, the gap between the door 312 and the vertical frame 302 is closed by the bracket 344 and the smoke barrier 341, the gap between the door 311 and the door 312 is closed by the flat plate 332 and the smoke barrier 315, the gap between the upper frame 301 and the door 311 is closed by the smoke barrier 321, the shutter 325, and the rubber door stopper 329, the gap between the door 312 and the upper frame 301 is closed by the flat plate 330, the smoke barrier 322, and the shutter 326, and the gap between the door 311, the door 312, and the door fence 305 is closed by the smoke barriers 317 and 318 and the flat plates 332 and 333, and it is possible to reliably prevent smoke from flowing into the ascending/descending path from the landing place or flowing out to the landing place side from the ascending/descending path. In particular, as shown in fig. 36, since the gaps in the arrow portions where three or more members face each other are reliably closed, the smoke barrier effect can be said to be excellent.

However, the materials and shapes of the smoke barriers 317 and 318, the smoke barriers 321 and 322, and the smoke barriers 315 and 341 may be determined in consideration of the functions, properties, and the like of the smoke barriers. That is, in the case of the smoke barrier 315, 341, since only the surface is pressed, the smoke barrier performance is only required to be satisfied, and the operation accompanying the rubbing does not have to be considered particularly. On the other hand, in the case of the smoke barriers 317 and 318, since the smoke barriers are constantly moved relative to the door rail 305 in accordance with the opening and closing operation of the door, it is necessary to consider not only the smoke barrier performance but also friction (vibration, noise countermeasure, or the like) and to have a function of performing smooth sliding operation. Further, in the case of the smoke barriers 321 and 322, friction due to relative movement with the shutters 325 and 326 is also received when the doors are closed, and therefore, a function of enabling smooth sliding operation is required, although not to the same extent as the smoke barriers 317 and 318. That is, it is desirable to have both smoke barrier performance and sliding performance. Since the doors 311 and 312 are closed in a state of being pressed against the shutters 325 and 326 at the terminal end of the closing of the doors, and the operation is accompanied by friction, it is effective to apply special processing for improving wear resistance with a low friction coefficient to the smoke barrier members 321 and 322, and to stick a tape having excellent sliding characteristics to the shutters 325 and 326 side.

In the case of a fire, particularly due to fluctuations in air temperature and air pressure, it is effective that the hollow portion is slightly expanded in the case of a member that deforms due to such changes in air temperature and air pressure, for example, the smoke barriers 321, 322, and 341, or the pair of left and right tabs are deformed in the flow direction of smoke in the case of the smoke barriers 317 and 318. In addition to the case where the shape of the smoke barrier changes according to the air pressure difference, for example, a member (U-shaped groove holder or the like) configured to movably support the smoke barrier can obtain the same effect. In addition, the smoke leakage amount is 0.2m when the pressure difference between both sides of the door is 19.6Pa according to the regulations relating to smoke-blocking performance³/min×m²Since the following does not require a complete smoke barrier property, it is not necessary to completely adhere the members to each other.

Fig. 37 shows a case where the same members as the smoke barriers 317 and 318 are used as the smoke barriers 321 'and 322'. It is preferable to use the components as commonly as possible because the number of components can be reduced accordingly. However, it is needless to say that the material and shape may be appropriately selected depending on the properties, action, and function required for the component.

According to embodiment 2 described above, there is little concern that an obstacle such as vibration or noise may occur during normal door opening and closing, and when the door is closed, the gap between the landing door and the entrance/exit frame and the doorsill is reliably closed according to the current situation, so that it is possible to appropriately prevent smoke from entering whenever a fire breaks out. In addition, it is not necessary to provide a special driving mechanism or device for such smoke blocking and preventing functions. And has the advantage of being able to be added to existing elevators.

Example 3

Fig. 38 is an overall view showing an embodiment of a locking device according to the present invention, fig. 39 is a view taken along line B-B of fig. 38, and fig. 40 is an explanatory view explaining an operation of the device according to the present invention.

In the figure, 201 denotes a landing door, and a hollow member 211 is attached to the inside thereof via a nut 212. The valve 220 is a valve provided inside the same landing door 201 so as to face the key hole 202, and supported by a hinge structure, for example, and satisfies smoke barrier performance by closing the opening 211a of the hollow member 211 with a seal 220 a. The state of closing the opening 211a is normally maintained by the torsion spring 220 b. Such a hollow member is used for a mischief prevention measure in which it is difficult to operate only with a wire due to a predetermined distance from the surface of the landing door 210.

Reference numeral 230 denotes a lever for operating the lock 240, and one end of the lever is connected to the lock 240 and the other end is disposed, for example, in the vicinity of the lower side of the hollow member 211. On the other hand, reference numeral 250 denotes an unlocking key of the present invention, which is L-shaped, for example, and the tip end portion is freely bent in a predetermined direction. In the illustrated embodiment, the tip end portion of the unlocking key is freely bent in the direction opposite to the L-shape.

The unlocking operation of such a device will be described below with reference to the drawings. First, one piece of the unlocking key 250 is directed upward, and the front end is inserted into the key hole 202 and pushed innermost. Then, the tip end penetrates the hollow member 211 to push the seal 220a backward, and the tip end of the unlocking key 250 bends downward due to its own weight, for example, while the seal 220a rotates backward as shown in fig. 40(b) against the spring force of the torsion spring 220b, and is shifted to a drooping state.

Then, in this case, in fig. 38 and 40(b), the unlocking key 250 is turned forward toward the upper side, the tip end portion 250a comes into contact with the lever 230, the lever 230 is pressed to the back side of fig. 38, that is, the lever 230 is turned in the arrow direction as shown in fig. 39, and the lock 240 is turned upward to release the lock. Therefore, the opening operation and the unlocking operation of the key hole 202 are organically linked, so that the opening and closing of the landing door can be performed very smoothly, and rescue and maintenance work and the like can be performed easily. Further, since it is difficult to easily operate the wire with a bent metal member due to the presence of the hollow member 211 and the arrangement relationship with the lever 230, the opening operation of the landing door 210 due to mischief can be prevented, but the landing door may be configured such that the keyhole 2 of the landing door is directly closed only by the valve 220.

Further, the bending structure of the distal end portion of the unlocking key 250 may be bent by its own weight, or may be bent in a direction opposite to the opening direction of the valve 220, and the other end of the one rod 230 may be disposed not below but in the vicinity of the opening side of the valve 220.

According to embodiment 3 described above, the intrusion of smoke can be reliably prevented by the opening and closing valve, and the smoke barrier performance can be maintained very well. Further, the operation of releasing the locking of the landing door can be performed easily without any trouble.

Example 4

In the door device of the present embodiment, as shown in fig. 47, smoke barriers 95 and 96 are attached to the lower end portion and the upper back surface portion of the door 110, respectively. As shown in fig. 48, the upper smoke barrier 96 is slid on the shutter 94 protruding from the upper frame 91 in the process of moving the door 9 from the vicinity of the fully closed position to the fully closed position, and blocks smoke in the event of a fire. As shown in fig. 50, the lower smoke barrier 95 is slidably fitted in a groove of the door rail 93 to block smoke in the event of a fire.

The upper smoke barrier 96 is made of synthetic resin, and the portion in sliding contact with the baffle 94 is formed in a ring shape in cross section as shown in fig. 49, and a coating 96a formed of a surface-active modifying agent such as a silicone elastomer is applied to the surface of the upper smoke barrier 96, so that the generation of abrasion and noise of the smoke barrier 96 due to friction with the baffle 94 is suppressed.

Further, since the lower smoke barrier 95 is made of synthetic resin, the sliding contact portion with the door rail 93 is formed in a cross-sectional shape that expands downward as shown in fig. 51, and a coating 95a formed of a surface activity improving treatment agent such as a polyester elastomer is applied to the surface thereof, the generation of abrasion or noise of the smoke barrier 95 due to friction with the door rail 93 is suppressed. The surface processing of the smoke barriers 96 and 95 may be performed by various other methods as long as the smoke barriers are easy to slide and have excellent abrasion resistance. Further, the surface processing is performed on both the members of the smoke barrier 96, 95, but it is needless to say that the surface processing may be performed only on either member.

A top cover 3 shown in fig. 41 is attached to a position above an opening portion leading from the boarding/alighting field to the boarding/alighting passage. Here, the slide rail 4 is horizontally provided on the top cover 3, and a pair of hangers 109 and 109 are provided on the slide rail 4 so as to be movable along the slide rail 4. Further, a pair of pulleys 6, 7 are disposed at both ends of the top cover 3, and a wire 5 is wound around both the pulleys 6, 7, and both ends of the wire are connected to one hanger 109. A clamp 8 is fixed to an intermediate position of the wire 5 wound between the pulleys 6 and 7, and the clamp 8 is connected to the other hanger 109. Therefore, the hangers 109 and 109 move in opposite directions to each other.

Further, since both pulleys 6 and 7 are supported in an inclined posture as shown in fig. 42, effective use of space is achieved.

As shown in fig. 41, the other hanger 109 is provided with a locking device 10 for locking the door in the fully open position. Further, a spring 11 is stretched between the hanger 109 and the top cover 3, and the pair of hangers 109 and 109 are constantly urged in the door closing direction by the spring 11.

The door closing force increasing device 20 according to the present invention is connected to the one hanger 109. In the door-closing force reinforcement device 20, a cam 21 is fixed to the top cover 3. An intermediate portion of the lever 23 is pivotally supported by the hanger 109 via a bracket 24, a spring 25 is connected to a base end portion of the lever 23, and the lever 23 is constantly urged to rotate counterclockwise by the spring 25. A roller 22 is rotatably supported pivotally at the distal end of the lever 23, and the roller 22 is pressed against the cam 21 by the biasing force of a spring 25.

As described above, since the door closing force reinforcement device 20 is provided to one hanger 109 and the lock device 10 is provided to the other hanger 109 in the pair of hangers 109, even if the wire 5 is cut by a fire or the like, the door supported by the one hanger 109 is held at the closed position by the operation of the door closing force reinforcement device 20, and the door supported by the other hanger 109 cannot be opened manually by the operation of the lock device 10. In this way, the door is kept in the closed state, and therefore, it is safe.

The door-closing force increasing device 20 may be provided with an adjusting mechanism for adjusting the magnitude of the increase of the door-closing force or the position of the door to be increased, and for example, an adjusting mechanism for vertically or horizontally shifting the position of the roller support mechanism including the roller 22 and the lever 23, an adjusting mechanism for adjusting the initial deformation amount of the spring 25, or the like may be used. Therefore, the door closing force and the like can be easily adjusted on site.

In fig. 41, the two-dot chain lines indicate the positions of the hangers 109 and the roller 22 in the fully opened state of the door, and the solid lines indicate the positions of the hangers 109 and the roller 22 in the fully closed state of the door. In the process of shifting from the door fully-opened state to the door fully-closed state, the roller 22 is first guided by the horizontal cam surface of the cam 21. Here, since the roller 22 is acted on by a reaction force in the vertical direction with respect to the horizontal cam surface by the spring 25 without generating a component force in the horizontal direction, the door is driven in the closing direction by receiving the urging force of the spring 11 as in the conventional device. Then, before the door is completely closed, the roller 22 is pressed against the inclined cam surface of the cam 21, and a reaction force in a direction perpendicular to the inclined cam surface acts on the roller 22. Since the reaction force has a horizontal component, the hanger 109 is forced in the closing direction by the horizontal component. Therefore, the door closing force generated by the biasing force of the spring 11 and the door closing force generated by the horizontal component force are simultaneously applied to the door, and the door closing force is enhanced.

In the door device described above, while the upper smoke barrier 96 starts to come into sliding contact with the shutter 94 and the resistance affects the movement of the door in the process of the door moving from the vicinity of the fully closed position to the fully closed position, particularly from immediately before the door is fully closed, the door is completely closed because the door closing force is increased to be greater than the resistance by the door closing force increasing device 20.

In addition, when the elevator is installed outdoors and the opening and closing of the door is greatly affected by wind, or for various other reasons, a large resistance force acts when the door approaches the fully closed position, and the door is completely closed by the increase of the door closing force by the door closing force increasing device 20.

Fig. 43 and 44 show a structure of a door device in a single-opening type in which the door is formed of two doors that open in one direction from one side. In this configuration, since there is a relatively large space, a part of the door closing force reinforcement device 20 'is provided in a hanger 109' that includes the lock device 10 and suspends the door on the high speed side. That is, the cam 21 ' is provided on the top cover 3, and is attached to the hanger 109 ' via the lever 23 ' and the bracket 24 ', and the other end of the lever 23 ' is urged by the spring 25.

In this door device, as in the door device described above, the roller 22 ' is pressed against the inclined cam surface of the cam 21 ' during the transition from the door immediately before fully closed state to the door fully closed state, and the door closing force is increased by the horizontal component force received by the roller 22 '.

Fig. 45 and 46 show another example of the roller support mechanism in the door closing force increasing device. In the configuration example of fig. 45, the roller 32 is used as the urging member, the torsion spring 31 is used, and the T-shaped lever 33 having the roller 32 at one end is urged to rotate clockwise by the torsion spring 31. As a configuration in which the roller 32 is pressed against the cam 21 (21'), space saving is achieved.

On the other hand, in the configuration example shown in fig. 46, the above-described lever is omitted, and the roller 32' is biased vertically upward by the spiral spring 41, so that the spring 41 having a small elastic coefficient can be used.

As described above, according to the door device of the present embodiment, by adding a simple structure to the conventional device, the door can be always reliably closed to the fully closed position regardless of the installation of the smoke barrier mechanism, the ambient environmental conditions, and the like.

Claims (28)

1. An elevator door device, the elevator comprises an entrance frame and a landing door, the entrance frame is arranged on an entrance of a lifting passage from a landing place, and is composed of an upper frame and a vertical frame, the landing door is arranged on the entrance frame at intervals and is guided by a door fence, and an opening part of the entrance frame is opened and closed.

2. An elevator door device, the elevator comprises an entrance frame and a landing door, the entrance frame is arranged on an entrance of a lifting passage from a landing place and comprises an upper frame and a vertical frame, the landing door comprises a high-speed door and a low-speed door which are arranged on the entrance frame at intervals and guided by a door fence to open and close an opening part of the entrance frame, the landing door device is characterized in that a smoke barrier member for preventing smoke from entering is arranged on at least one of the upper part, the side part and the bottom part of the high-speed door and the low-speed door or the opposite component opposite to the upper part, the side part and the bottom part of the high-speed door and the low-speed door, a door closing force reinforcing device is connected to the landing door, and the position of the landing door when the landing door approaches the landing door or the opposite component from the smoke barrier member is pressed to a full-closing position along a door closing direction.

3. The door apparatus as claimed in claim 2, wherein the low speed door is formed to have a smaller bending thickness at a side opposite to the high speed door.

4. The door device according to claim 2, wherein a notch is provided in an upper portion of the low speed door, and a smoke barrier for the high speed door is disposed in the notch.

5. The door device as claimed in claim 2, wherein a shutter is mounted to a facing member facing the smoke barrier provided at an upper portion of the low speed door, the shutter contacting the smoke barrier when the landing door is closed, and a flat plate is mounted to close an end of the shutter.

6. The door apparatus as claimed in claim 1, wherein one of said smoke barrier member and said opposing member is freely adjustable.

7. The door device as claimed in claim 6, wherein a shutter is provided on a facing member facing a smoke barrier provided at an upper portion of the landing door, and the shutter is freely adjustable.

8. The door device according to claim 6, wherein the smoke barrier provided on the side of the landing door is fitted in a recess of a bracket provided on the side of the landing door, and the bracket can be freely adjusted.

9. The door apparatus as claimed in any one of claims 1 to 8, wherein the smoke barrier of the side portion is disposed in lower contact with the smoke barrier of the bottom portion.

10. The door apparatus as claimed in any one of claims 1 to 8, wherein the smoke barrier of the side portion is disposed in upper contact with the smoke barrier of the upper portion.

11. The door apparatus as claimed in claim 9, wherein the smoke barrier of the side portion and the smoke barrier of the bottom portion are disposed on the same vertical plane.

12. The door apparatus as claimed in claim 11, wherein the two smoke barrier members are coupled to each other at respective end portions thereof.

13. The door apparatus as claimed in claim 10, wherein the smoke barrier of the side portion and the smoke barrier of the upper portion are disposed on the same vertical plane.

14. The door apparatus as claimed in claim 13, wherein the two smoke barrier members are connected to each other at respective end portions thereof.

15. The door apparatus as claimed in any one of claims 1 to 8, wherein said smoke barrier is a member which deforms in response to ambient air temperature or air pressure difference.

16. The door apparatus as claimed in any one of claims 1 to 8, wherein said smoke barrier is mounted via a member which moves in response to a difference in air pressure.

17. The door apparatus as claimed in any one of claims 1 to 8, wherein said smoke barrier of the bottom portion is provided at a portion other than the guide block mounting portion.

18. The door apparatus as claimed in any one of claims 1 to 8, wherein the smoke barrier members disposed on the side and bottom of the landing door are different members.

19. The door device as claimed in claim 18, wherein the smoke barrier provided on the side of the landing door is a hollow member or an L-shaped member.

20. The door apparatus as claimed in claim 18, wherein the smoke barrier of the bottom or upper portion includes a pair of protruding pieces gradually expanding toward a front end.

21. The door device as claimed in any one of claims 1 to 8, wherein the landing doors are split doors, and the smoke barriers facing each other at the facing landing doors are contactable with each other without a gap.

22. The door apparatus as claimed in claim 1, wherein a slide rail is horizontally provided on the top cover installed above the opening, a hanger capable of freely moving along the slide rail is provided on the slide rail, the door is suspended on the hanger, and the door is biased in a closing direction by a biasing means over an entire region from a fully open position to a fully closed position of the door.

23. The door apparatus as claimed in claim 22, wherein the urging means is a spring provided on the top cover.

24. The door unit as claimed in claim 1, 22 or 23, wherein the door closing force increasing means comprises a cam provided on the top cover, a roller provided on the hanger, and a biasing member for biasing the roller against the cam, the cam having a horizontal cam surface extending horizontally and an inclined cam surface extending continuously and obliquely from the horizontal cam surface, the roller being pressed against the inclined cam surface of the cam to generate a force for biasing the door toward the fully closed position in a process of moving the door from the vicinity of the fully closed position to the fully closed position.

25. The door apparatus as claimed in claim 1, 22 or 23, wherein the door is formed of a plurality of doors having opening portions opened from the center to both sides.

26. The door apparatus as claimed in claim 1, 22 or 23, wherein the door is formed of a door having an opening portion opened in one direction from one side.

27. The door apparatus as claimed in claim 1, 22 or 23, wherein a locking means for locking the door at the fully closed position is connected to one of the two doors constituting the door, and the door closing force increasing means is connected to the other door.

28. The door device as claimed in any one of claims 1 to 8, or claim 22 or 23, wherein the smoke barrier is formed by applying a coating of a surface-active modifying agent to the surface of the body made of an elastic material.