JPH09267985A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the flowing out of smoke into an ascent and descent passage even if a fire occurs in a building. SOLUTION: A beam is provided for an ascent and descent passage side above a three-way frame 2, and a single phase induction motor 6 is attached on the beam. Longitudinal columns are erected vertically on both sides of the beam, and a worm shaft 7A is fixed longitudinally on the longitudinal column on one side. A pulley 14B is inserted and fixed in an upper end of the worm shaft 7A, and a V belt 13 is wound around a pulley 14A which is inserted and fixed in a shaft end of the pulley 14B and the single phase induction motor 6. Worm shafts 7B, 7C which mesh with teeth formed on the worm shaft 7A are provided horizontally. A drive plate 8 is fixed on these worm shafts 7B, 7C. If a fire occurs in a building, the single phase induction motor 6 is driven by a detection signal, the drive plate 8 is oscillated, and a landing place door 1 is pressed against the three-way frame 2.

Description

Detailed Description of the Invention

[0001]

[0001] The present invention relates to an elevator.

[0002]

2. Description of the Related Art FIG. 6 is a front view showing an example of a conventional entrance / exit of an elevator, FIG. 7 is an enlarged sectional view taken along line CC of FIG. 6, and FIG. 8 is an enlarged sectional view taken along line DD of FIG. . In FIGS. 6, 7 and 8, the three-way frame 2 is attached to the opening formed in the landing wall 24 at the entrance / exit of the elevator. A hall button 19 is attached to a hall wall 24 on the right side of the three-way frame 2. A horizontal lighting type indicator 18 is attached to the center of the upper portion of the three-way frame 2.

A sill 3 is buried at the tip of the landing floor 17 as shown in FIG. At the top of the landing door 1, there is a landing wall 24
The hanger plate 22 is attached to the rear surface of the
It is erected as shown in. Further, a rail support plate 23B is vertically provided on the upper end of the three-way frame 2 via angle steel, and a rail 5 is horizontally provided on the hoistway side of the rail support plate 23B.

A pair of guide rollers 15 are attached to the upper part of the hanger plate 22 via a stepped shaft 21A.
The guide roller 15 is mounted so as to roll on the upper surface of the rail 5 provided laterally on the hoistway side of the rail support plate 23B. Therefore, the landing door 1 is suspended on the rail support 23B via the hanger plate 22, the guide roller 15 and the rail 5.

At the bottom of the hanger plate 22, there is a stepped shaft 21B.
A pair of rollers 16 are attached via
The upper surface of the is opposed to the lower surface of the rail 5 with a slight gap. The car door 1 shown on the right side in FIG. 6 is also the same.

At the lower end of the car door 1, a pair of guide shoes 4 are vertically installed symmetrically, and the guide shoes 4 serve as a landing floor.
It is loosely fitted in the groove formed in the upper part of the sill 3 installed at the tip of 17.

In the elevator having the doorway constructed as described above, as shown in FIG. 7, there is a decree between the front surface of the landing door 1 and the rear surface of the three-sided frame 2 (Ministry of Construction Notification No. 1111 of 1981).
No. 1, No. 1, Table 1), a clearance H of 6 mm or less is formed.

Similarly, as shown in FIG. 8, a gap L allowed by the above-mentioned laws is formed between the front surface of the upper end of the landing door 1 and the upper back surface of the three-way frame 2, and further, the landing door. A gap K is similarly formed between the lower end of 1 and the upper surface of the threshold 3.

It is preferable that these gaps H, L and K are as narrow as possible in terms of safety, but in consideration of the tolerance of component parts and the accuracy of installation, they are determined to the values described in the above-mentioned law. However, when the elevator is manufactured and installed, the manufacturer allows for a margin, for example, to keep it to 5 mm or less.

[0010]

However, in the elevator thus constructed, if a fire should occur on a certain floor of a high-rise building in which the elevator is installed, the fire may cause a fire. The generated smoke causes a gap H formed between the landing door 1 and the three-sided frame 2 shown in FIG. 7 and a gap formed between the lower end of the landing door 1 and the sill 3 (Note: the guide shoe 4 Is a partial space, so that a portion without the guide shoe 4 is largely vacant) K, and a gap L formed between the rear end face of the three-way frame 2 and the upper front face of the landing door 1 shown in FIG. May leak into the hoistway.

Then, this hoistway serves as a smoke outlet,
Due to the smoke effect of the hoistway, the fire on that floor becomes more intense, and smoke not only enters the halls on the upper floors through the above-mentioned gaps H, L, K, etc., but also goes up and down. Smoke may enter the inside of the car from the ventilation fan for air conditioning installed in the ceiling of the car that gets on and off the road, and may promote fear of passengers inside the car.

Therefore, it is conceivable to provide a smoke barrier at each hall, but then the hall structure becomes complicated,
Not only will the elevator installation period be long, but the construction cost of the building may be high.

Therefore, a first object of the present invention is to obtain an elevator which can prevent the outflow of smoke to the hoistway even if a fire should occur in the building. Is to obtain an elevator that can further increase the safety of passengers inside the car.

[0014]

An elevator according to the invention as set forth in claim 1 is a hanger rail which is installed laterally on the hoistway side of an upper part of a doorway through an elastic body so as to be movable in the doorway direction.
A landing door suspended by rollers on this hanger rail, a worm shaft attached to the hoistway side of this landing door and provided with a drive piece protruding, and a worm shaft provided above the hanger rail to drive the drive piece. An actuator for pressing the hall door to move the hall door toward the hall is provided.

The elevator according to the second aspect of the invention is characterized in that a cushion material is joined to the rear surface of the three-way frame at the entrance and exit.

Further, in the elevator according to the third aspect of the present invention, a hanger rail is provided laterally on the hoistway side above the doorway of the car through an elastic body so as to be movable in the doorway direction, and a roller is provided on the hanger rail. The car door to be suspended, the worm shaft attached to the hoistway side of the car door with the drive piece protruding, and the worm shaft provided above the hanger rail to drive the drive shaft to press the drive piece against the car door. An actuator for moving the door to the car side is provided.

An elevator according to a fourth aspect of the invention is characterized in that a cushion material is joined to a surface of the car facing the car door.

An elevator according to a fifth aspect of the invention is characterized in that a closing plate is hung vertically at the lower end of the landing door or the lower end of the car door.

Further, in the elevator according to the invention as defined in claim 6, a recess is formed on one side of the groove of the doorway sill and the groove of the car sill, into which the guide shoe is loosely fitted by the movement of the landing door and car door. It is characterized by having done.

By such means, in the invention according to claim 1, when a fire occurs in the building in which the elevator is installed, the landing doors are three-wayed through the actuators driven by the fire occurrence signal. It is pressed against the rear surface of the frame to block the gap formed between the landing and the hoistway.

Further, in the second aspect of the present invention,
The cushion material completely shields the space between the three-way frame and the landing door, and prevents the surface of the landing door from being damaged.

According to the third aspect of the present invention,
The car door is pressed against the car through an actuator driven by the fire occurrence signal, and the air gap formed between the car and the car door is shielded.

Also, in the invention according to claim 4,
The cushioning material completely shields the space between the car door and the car, and prevents the car door surface from being damaged.

Further, in the inventions according to claims 5 and 6, the gap between the threshold and the landing door and the car door is shielded.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the elevator according to the present invention will be described below with reference to the drawings. FIG. 1 is a partial vertical cross-sectional view showing an embodiment of the elevator of the present invention, and is a view corresponding to FIG. 8 shown in the related art and corresponding to claims 1 and 2. 2 is an AA arrow view of FIG. 1, and FIG. 3 is a BB cross-sectional enlarged view of FIG.

1, FIG. 2, and FIG. 3 are different from FIG. 8 shown in the prior art in that the door front-rear drive mechanism described below is provided on the hoistway side of the entrance and exit, and is closed at the lower end of the landing door. Others are the same as FIGS. 6, 7 and 8 by providing the plate. Therefore, the same elements as those in FIGS. 6, 7 and 8 are designated by the same reference numerals and the description thereof will be omitted. That is, on the upper end of the three-way frame 2, a chevron-shaped steel reinforcement 23a is laterally provided by spot welding, and the rail support plate 23 is provided on the reinforcement 23a.
The lower end of A is fixed with a bolt.

A plurality of linear bearings 20 are inserted in the middle portion of the rail support plate 23A at equal intervals in the direction orthogonal to the paper surface of FIG. In each of these linear bearings 20, the shaft portion of the stepped shaft 25 is inserted from the right side in FIG. The compression coil spring 9 is loosely fitted on the shaft portion of the stepped shaft 25.

On the hoistway side of the flange of the stepped shaft 25,
Hanger rail 5 that is the same as the hanger rail 5 shown in FIG.
Has been fixed. As shown in FIG. 2, at the lower end of the landing door 1, a wide closing plate 12A is vertically provided between the pair of guide shoes 4, and a small closing plate is provided to the outside of each guide shoe 4. A plate 12B is vertically installed.

A cushion 10C made of a foam material of chloroprene rubber is bonded to the lower part of each of the closing plates 12A and 12B by the adhesive. A recess 3a is formed in the sill 3 in the longitudinal direction with respect to the landing side of the groove into which the guide shoe 4 is loosely fitted, as shown in FIG.

Above the hoistway side of the three-way frame 2, as shown in FIG. 4 which is a right side view of FIG. 1, a chevron steel beam 11A is horizontally installed and fixed to the building wall. On the upper surface of the beam 11A on the right side in FIG. 4, a small single-phase induction motor 6 is fixed with its shaft end facing upward.

A pulley 14A is press-fitted into this shaft end through a key (not shown). The electric wire connected to the single-phase induction motor 6 is connected to a safety circuit of a control panel installed in a machine room at the upper end of the hoistway via a tail cord (not shown) hanging from a car (not shown).

A bearing seat 26 is provided at the right end of the beam 11A in FIG.
A is fixed. A worm shaft 7A is vertically provided in a bearing (not shown) press-fitted into the bearing seat 26A, and a pulley 14B is inserted at an upper end of the worm shaft 7A. The pulley 14B is inserted between the pulley 14B and the pulley 14A. A V-belt 13 is wound around. The upper ends of vertical columns 11B and 11C made of shaped steel are welded to both ends of the beam 11A, and the lower ends of the vertical columns 11B and 11C are fixed to the sill 3.

Of these, a bearing seat 26A is fixed to the lower part of the vertical column 7A on the right side in FIG. 4, and the lower part of the worm shaft 7A described above extends vertically through this bearing seat 26A. On the worm shaft 7A, worm teeth are formed on the lower bearing seat 26A and the lower bearing seat 26A.

Bearing seats 26B are symmetrically fixed to the right side surface of the upper part of the vertical column 11B and the left side surface of the upper part of the vertical column 11C, and the worms provided in parallel with the beam 11A are mounted on these bearing seats 26B. Both ends of the shaft 7B penetrate. Worm teeth are also formed on the right end of the worm shaft 7B, and these teeth mesh with the teeth formed on the upper portion of the vertically provided worm shaft 7A.

A pair of drive plates 8 are fixed to the worm shaft 7B on the left and right sides of the central portion. Cushions 10C made of a foam material of chloroprene rubber are joined to the tip ends of these drive plates 8.

A through hole is formed in the sill 8 in the longitudinal direction with respect to the hoistway side. The worm shaft 7C penetrates through the through hole, and teeth are formed at the right end of the worm shaft 7C. The teeth mesh with the teeth formed at the lower end of the worm shaft 7A. Both ends of the worm shaft 7C have a threshold 3
Is supported by bearing seats 26C fixed to both ends of.

The worm shaft 7C also has an upper worm shaft 7
Symmetrically to B, one side of the drive plate 8 is fixed, and a cushion 10C is also joined to the tips of these drive plates 8.
The mounting direction of the drive plate 8 shown in FIG. 4 shows the state after the operation shown in FIG. 5 described later from the state of FIG.

In the thus constructed elevator, a fire occurs on a certain floor of the building in which the elevator is installed, and the fire alarm operates due to the fire.
When this detection signal is input to the security circuit of the control panel, the single-phase induction motor 6 is driven. Then, in FIG. 1, the V-belt 13 having one side wound around the pulley 14A rotates, and
The worm shaft 7A rotates via 14B as shown by arrow E in FIG.

When the worm shaft 7A is driven, the worm shafts 7B and 7C having teeth meshed with the worm shaft 7A.
Also, the drive plate 8 having one side fixed to the worm shafts 7B and 7C rotates as shown by arrows F1 and F2 in FIG. 1 and reverses as shown in FIG. Push to the left as indicated by arrow G1 in FIG.

Then, the hall door 1 moves to the hall side together with the hanger rails 5 supporting the hall door 1 and compresses the compression coil spring 9. As a result, in the gap formed between the landing door 1 and the three-sided frame 2, the landing door 1 has a cushion 10A.
Shielded by touching.

Similarly, the closing plate 12A shown in FIGS.
By moving 12B to the left in FIG. 1 and to the right in FIG. 3 as well, the gap formed between the closing plates 12A and 12B and the upper end of the groove of the sill 3 is blocked.

Therefore, since it is possible to prevent smoke from entering the hoistway from the landing side, it is possible not only to prevent smoke from entering the upper floors from the floor where the fire has occurred, but this elevator can be installed in high-rise houses and the like. When installed, noise can be reduced from the hoistway to the living room. When the landing door 1 moves, the voltage applied to the single-phase induction motor 6 is reduced by the signal of the limit switch (not shown), and the landing door maintains the moving state with a small exciting current.

Moreover, since the cushion 10C is joined to the tip of each drive plate 8 and the cushion 10A is also joined to the surface of the three-way frame 2 facing the landing door, the surface of the landing door is damaged when it is driven. It is also possible to prevent the deterioration of the design surface.

In the above embodiment, the landing door was driven by the signal that detected the occurrence of fire. However, the worm shaft and the single-phase induction motor shown in FIG. The hanger rail of claim 3 is also supported via a linear bearing and a coil spring to press the car door to the car side like a landing door and prevent smoke from entering the inside of the car.
The invention described in (1) may be adopted.

Also in this case, a cushion is joined to the car side facing the car door, and a closing plate is hung vertically between the guide shoes which are loosely fitted to the sill of the car. Similarly, a cushion may be joined to provide the invention according to claim 4.

[0046]

As described above, according to the first aspect of the present invention,
On the hoistway side above the doorway, a hanger rail is laid horizontally via an elastic body so that it can move in the direction of the doorway.The landing door is suspended by rollers on this hanger rail. By installing an actuator above the hanger rail that is attached to the hoistway side and drives the worm shaft to push the drive piece to the landing door and move this landing door to the landing side, fire inside the building where the elevator is installed When a fire occurs, the hall door is pressed against the rear surface of the three-way frame via the actuator driven by this fire occurrence signal, and the void formed between the hall and the hoistway is shielded. Even if a fire occurs, it is possible to obtain an elevator that can prevent smoke from flowing out to the hoistway.

According to the second aspect of the invention, the cushion material is joined to the rear surface of the three-way frame at the entrance / exit,
The air gap between the three-sided frame and the landing door was completely covered with a cushioning material, and damage to the surface of the landing door was prevented, so even if a fire were to occur inside the building, smoke could leak to the hoistway. It is possible to obtain an elevator that can prevent

According to the third aspect of the present invention, a hanger rail is provided laterally on the hoistway side above the doorway of the car via an elastic body so as to be movable in the doorway direction, and the car is mounted on the hanger rail via rollers. Suspend the door, attach a worm shaft with a drive piece protruding to the hoistway side of this car door, and drive the worm shaft above the hanger rail to press the drive piece against the car door and move this car door to the car side. By providing an actuator to move the car to the car, the car door is pressed against the car via the actuator driven by the fire occurrence signal, and the void formed between the car and the car door is shielded, so in the case of the building Even if a fire occurs in the car, it is possible to obtain an elevator that can increase the safety of passengers inside the car.

According to the invention described in claim 4, the cushion material is joined to the surface of the car facing the car door, so that the gap between the car door and the car is completely shielded by the cushion material. Since the surface of the car door is prevented from being damaged, even if a fire occurs in the building, it is possible to obtain an elevator that can increase the safety of passengers inside the car.

Further, according to the inventions of claims 5 and 6, a closing plate is hung vertically at the lower end of the landing door or the lower end of the car door, and the guide shoe is loosely fitted to one side of the groove of the sill. By forming a recess, the gap between the sill and the landing doors and car doors was blocked, so even if a fire should occur in the building,
It is possible to obtain an elevator that can increase the safety of passengers inside the car.

[Brief description of drawings]

FIG. 1 is a partial vertical sectional view showing an embodiment of an elevator according to the present invention.

FIG. 2 is a view taken in the direction of arrows AA in FIG. 1;

3 is an enlarged cross-sectional view taken along line BB of FIG.

FIG. 4 is a right side view of FIG. 1, showing a state where the drive plate is operated.

FIG. 5 is a partial vertical sectional view showing the operation of the elevator of the present invention.

FIG. 6 is a partial front view showing an example of a conventional elevator.

7 is an enlarged cross-sectional view taken along line CC of FIG.

8 is an enlarged cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

1 ... Landing door, 2 ... Three-sided frame, 3 ... Sill, 4 ... Guide shoe, 5 ... Hanger rail, 6 ... Single-phase induction motor, 7A, 7
B, 7C ... worm shaft, 8 ... drive plate, 9 ... compression coil spring, 10A, 10B, 10C ... cushion, 11A ... beam, 11B,
11C ... vertical column, 12A, 12B ... blocking plate, 13 ... V belt, 14
A, 14B ... Pulley, 15,16 ... Roller, 17 ... Docking door, 18 ...
Indicator, 19 ... Landing button, 20 ... Linear bearing.

Claims (6)

[Claims] 1. A hanger rail laterally installed on the hoistway side above the doorway in the direction of the doorway via an elastic body, a landing door suspended by rollers on the hangerrail, and the landing door of the landing door. A worm shaft that is additionally provided on the hoistway side and has a drive piece protruding from it, and a worm shaft that is provided above the hanger rails and drives the worm shaft to press the drive piece against the hall door and move the hall door to the hall side. An elevator having an actuator that causes the elevator. 2. The elevator according to claim 1, wherein a cushion material is joined to a rear surface of the three-way frame of the entrance and exit. 3. A hanger rail horizontally installed on the hoistway side above the doorway of the car via the elastic body so as to be movable in the doorway direction, a car door suspended on the hanger rail via rollers, and this car door. A worm shaft that is additionally provided on the hoistway side and has a drive piece projecting from it, and a worm shaft that is provided above the hanger rails and drives the worm shaft to press the drive piece against the car door, and the car door to the car side. Elevator with an actuator for moving to. 4. The elevator according to claim 3, wherein a cushion material is joined to a surface of the car facing the car door. 5. The elevator according to claim 1, wherein a closing plate is vertically provided at a lower end of the hall door or a lower end of the car door. 6. A recess, into which a guide shoe is loosely fitted by movement of the landing door and the car door, is formed on one side of the groove of the doorway sill and the groove of the car sill. The elevator according to any one of claims 1 to 5.