WO2004106213A1

WO2004106213A1 - Door device of elevator

Info

Publication number: WO2004106213A1
Application number: PCT/JP2003/006762
Authority: WO
Inventors: Yoshihiko Koizumi
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2003-05-29
Filing date: 2003-05-29
Publication date: 2004-12-09
Also published as: DE60336855D1; EP1627842A1; JPWO2004106213A1; EP1627842B1; CN100379674C; KR20050019811A; EP1627842A4; KR100708508B1; CN1649791A

Abstract

A door device of an elevator, wherein a swing member swinging about a swing shaft interlockingly with the opening and closing operation of a door body is mounted on the door body, a fixed part fixed to a landing doorway is connected to the swing member through a connection rope, a vertically movable shield body fitted to the lower end part of the door body is connected to the swing member and shields a clearance between the lower end part of the door body and a floor part at the doorway by the contact thereof with the floor part, and when a door is closed, the movable shield body is allowed to abut on the floor part and while the door is opening, the swing member is swung so that the movable shield body is dissociated from the floor part.

Description

Elevator overnight door device

Technical field

The present invention relates to an elevator door device having a door body for opening and closing a landing entrance or a car entrance. Background art

For example, in a conventional elevator disclosed in Japanese Patent Application Laid-Open No. H8-674686, a lower packing in contact with a sill groove is provided at a lower end portion of a landing door, so that a lower end of the landing door and a landing sill are provided. The structure which shields the gap between them is shown. However, in such a structure, when the landing door is opened and closed, the lower packing slides while being in contact with the sill groove, so that a sliding noise may be generated. In addition, since the worn lower packing needs to be replaced frequently, the cost is increased and maintenance is required.

In addition, in the conventional elevator shown in Registered Utility Model Abstract No. 3032400, when the door was closed, it was displaced diagonally downward and the gap between the lower end of the landing door and the threshold was removed. A shield to shield is shown. However, with such a structure, the mounting position of the shield had to be strictly adjusted and maintained. This is because if the shield touches the sill before the landing door is completely closed, the landing door may not be fully closed, and conversely, the landing door may not touch the sill. This is because a gap is left when is completely closed. Therefore, installation and maintenance of the shield are troublesome. Disclosure of the invention

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and it is intended to more reliably shield a gap at a lower end portion of a door body in a door closed state while maintaining the opening and closing operation performance of the door body. It is an object of the present invention to obtain a door device that can perform an elevator.

A door device for an elevator according to the present invention includes a door body that opens and closes an entrance, a swing member that is mounted on the door body, and swings around a swing axis in conjunction with the opening and closing operation of the door body. A connection rope connected between the fixed portion fixed to the landing entrance and the swinging member, and a vertically rotatable lower end portion of the door body, and connected to the swinging member, and connected to the swinging member; A movable shield is provided to shield the gap between the lower end of the door body and the floor by abutting on the floor, and when the door is closed, the movable shield abuts on the floor and the door is open. The swing member swings so that the movable shield is separated from the floor. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a rear view showing a closed state of a landing door device of an elevator according to Embodiment 1 of the present invention,

FIG. 2 is a rear view showing the landing door device of FIG. 1 in an open state,

FIG. 3 is an enlarged rear view showing a main part of the landing door device of FIG. 1,

FIG. 4 is a cross-sectional view taken along the line IV—IV in FIG. 3,

Fig. 5 is an enlarged rear view showing the main part of the landing door device of Fig. 2;

FIG. 6 is a sectional view taken along the line VI-VI of FIG. 5,

FIG. 7 is a rear view of the landing door device of the elevator according to Embodiment 2 of the present invention in an open state,

FIG. 8 is a rear view showing a closed state of the landing door device of the elevator according to Embodiment 3 of the present invention,

FIG. 9 is a rear view showing the landing door device of FIG. 8 in a door-open state. BEST MODE FOR CARRYING OUT THE INVENTION

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

FIG. 1 is a rear view showing a door-closed state of an elevator door device according to Embodiment 1 of the present invention (a view from the hoistway side), and FIG. 2 is a door open state of the landing door device of FIG. 3 is an enlarged rear view of the landing door device of FIG. 1, FIG. 4 is a sectional view taken along the line IV—IV of FIG. 3, and FIG. 5 is a cross-sectional view of the landing door device of FIG. FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 5.

In the figure, a door device housing 1 as a fixing portion is fixed above the landing entrance 20. The door device housing 1 extends along the frontage of the hallway 20 Door rail 2 is fixed. The landing doorway 20 is opened and closed by a pair of door bodies 3. The opening and closing of the door body 3 is guided by the door rail 2.

A door hanger 4 for suspending the door body 3 from the door rail 2 is fixed to the upper end of each door body 3. Each door hanger 4 is provided with a plurality of hanger rollers 5 that roll along the door rail 2. The door body 3 is opened and closed in conjunction with the opening and closing of the car door by the driving force of the door motor mounted on the car.

A plurality of door legs 6 are attached to the lower end of each door body 3. A landing threshold 7 is fixed on the floor of the landing entrance. The landing sill 7 is provided with a sill groove 7a into which a door leg 6 is inserted. The sill groove 7a extends along the frontage of the landing doorway 20 and guides the lower end of the door body 3 when opening and closing.

A swing lever 9 as a swing member that can swing around a swing shaft 8 is attached to the back surface of each door body 3. The swing lever 9 swings in conjunction with the opening and closing operation of the door body 3. Further, the swing lever 9 has first and second connection portions 9a and 9b. The first and second connection portions 9 a and 9 b are arranged on opposite sides of the driving shaft 8. The distance from the oscillating shaft 8 to the first connection portion 9a is larger than the distance from the oscillating shaft 8 to the second connection portion 9b.

A connection rope 11 is connected between the first connection portion a of each swing lever 9 and the center of the door device housing 1 in the frontage direction. The door hanger 4 and the door body 3 are provided with a plurality of rotatable connection rope guide rollers 13 a to 13 c for guiding the connection port 11 to the swing lever 9.

At the lower end of each door body 3, a movable shield 14 that can move up and down is provided. The movable shield 14 abuts on the landing sill 7 when the door is closed, thereby shielding the gap between the lower end of the door body 3 and the upper surface of the landing sill 7. In addition, the movable shield 14 is moved closer to and away from the landing sill 7 on the landing side than the sill groove 7a.

Further, the movable shield 14 has a shield base 15 and a shield member 16 fixed to the lower end of the shield base 15 and coming into contact with and separating from the landing sill 7. An engaging portion 15a is provided at the upper end of the shield base 15. The shielding member 16 extends over the entire width of the door body 3. The shielding member 16 is made of a highly airtight material such as rubber, for example. Below the swing lever 9 on the back of each door body 3, a pair of hook guides 17 extending in the vertical direction are attached in parallel with each other. A hook 18 that engages with the engaging portion 15a is arranged between the hook guides 17. At both ends of each hook 18, a hook roller 19 that rolls along the hook guide 17 is provided. The hook 18 is guided by a hook guide 17 and can move up and down.

A short rope 21 is connected between the second connection portion 9 b of the swing lever 9 and the hook 18. Above the swing lever 9 on the back of the door body 3, a rotatable direction change roller 22 around which a short rope 21 is wound is provided. The direction change roller 22 reverses the direction of the short rope 21. A plurality of rotatable short rope guide rollers 23a and 23b for guiding the short rope 21 from the direction changing roller 22 to the hook 18 are provided on the back surface of the door body 3.

At the end of the swing lever 9 on the side of the first connection portion 9a, a weight 10 as an urging means for urging the swing lever 9 in a direction in which the movable shield 14 comes into contact with the landing sill 7 is provided. Equipped. The connection opening 11 and the connection opening guiding rollers 13a to 13c are arranged so that the door body 3 is urged by the weight 10 in the door closing direction.

Next, the operation will be described. In the closed state, the swing lever 9 is held in the state shown in FIG. 1, and tension is applied to the connection rope 11 by gravity acting on the weight 10. Further, the shielding member 16 is in contact with the upper surface of the landing sill 7, and the gap between the lower end of the door body 3 and the upper surface of the landing sill 7 is shielded by the movable shielding member 14. This prevents smoke generated by the fire from entering the hoistway through the gap between the lower end of the door body 3 and the upper surface of the landing sill 7.

When the door opening operation is started, the door body 3 is moved in the door opening direction by staking the urging force of the weight 10 on the door body 3. As a result, the swing lever 9 is connected to the first connecting portion.

9a and the weight 10 are swung in the direction of being displaced upward. Due to the swing of the swing lever 9, the movable shield 14 rises and is separated from the landing sill 7. In addition, during the door closing operation, the movable shield 14 gradually descends, and the shielding member 16 comes into contact with the landing sill 7 when the door closing operation is completed. Therefore, during the opening / closing operation, the movable shield 14 does not slide on the landing sill 7, and the abrasion of the shield member 16 and generation of noise are prevented.

In such a landing door device, when the door is closed, the movable shield 14 is attached to the landing threshold 7. During the opening / closing operation, the movable shield 14 does not contact the landing sill 7, so that the opening / closing operation performance of the door body 3 is maintained, and the gap between the lower end of the door body 3 in the door closed state is maintained. Can be more reliably shielded. As a result, smoke and sound insulation can be improved.

In addition, a connection port 11 is connected between the swing lever 9 and the door device housing 1 to swing the swing lever 9 in conjunction with opening and closing of the door body 3. Since the movable shield 14 is moved toward and away from the landing sill 7 by the swing of 9, the configuration can be simplified, and mounting and adjustment can be facilitated.

Furthermore, since the movable shield 14 is moved closer to and away from the landing threshold 7 on the landing side than the threshold groove 7a, it is possible to prevent smoke from entering the panel of the door body 3, and the smoke It can also be prevented from entering the hoistway via the inside. Further, damage to the shielding member 16 can be easily confirmed from the landing side, and workability during maintenance can be improved.

Furthermore, since the door hanger 4 and the door body 3 are provided with connecting rope guide rollers 13 a to l 3 c for guiding the connection port 11 to the swing lever 9, the connection port 1 1 Can easily be prevented from interfering with other devices.

Also, since the distance from the swing shaft 8 to the first connection portion 9a is larger than the distance from the swing shaft 8 to the second connection portion 9b, the stroke of the movable shield 14 is reduced. The opening and closing stroke of the door body 3 can be made smaller, and the arrangement space of the movable shield 1 can be made smaller.

Furthermore, since the connection rope 11 is disposed so that the door body 3 is urged in the door closing direction by the weight 10, another means for urging the door body 3 in the door closing direction is provided. There is no need, and the configuration can be simplified.

Furthermore, since the weight 10 is used as the urging means, the configuration is simple, and a stable urging force can be generated regardless of the position of the door body 3. Embodiment 2

Next, FIG. 7 is a rear view of the landing door device of the elevator according to Embodiment 2 of the present invention in a door-open state. In the figure, a swing lever 31 as a swing member swingable about a swing shaft 30 is attached to the back surface of each door body 3. The swing lever 31 swings in conjunction with the opening and closing operation of the door body 3. The swing lever 31 has first and second connection portions 31a and 31b. The first and second connection portions 31a and 31b are arranged on the same side with respect to the swing shaft 30. The distance from the oscillating shaft 30 to the first connection portion 3 la is larger than the distance from the oscillating shaft 30 to the second connection portion 3 lb. A connection rope 11 is connected between the first connection portion 31 a and the center of the door device housing 1 in the frontage direction. A short rope 21 is connected between the second connection part 3 lb and the hook 18. A plurality of rotatable short rope guide rollers 32a and 32b for guiding the short rope 21 from the second connection portion 3lb to the hook 18 are provided on the rear surface of the door body 3.

A weight as an urging means for urging the oscillating lever 9 in a direction in which the movable shield 14 contacts the landing sill 7 is provided at an end of the oscillating lever 3 1 on the first connection portion 3 1 a side. 10 is mounted. The connection rope 11 is arranged so that the door body 3 is urged by the weight 10 in the door closing direction. Other configurations are the same as those in the first embodiment.

As described above, even when the first and second connection portions 31a and 31b are arranged on the same side with respect to the driving shaft 30, the same effect as in the first embodiment can be obtained.

In the first and second embodiments, the weight is used as the urging means. However, the urging means is not limited to the weight. For example, a torsion spring or the like may be used.

Further, a spring for pressing the movable shield against the sill may be provided between the door body and the movable shield as an urging means.

Further, a weight may be mounted on the movable shield.

Furthermore, the movable shield may function as a weight using the weight of the movable shield. Embodiment 3.

Next, FIG. 8 is a rear view showing a door-closed state of a landing door device for an elevator according to Embodiment 3 of the present invention, and FIG. 9 is a rear view showing a door-opened state of the landing door device of FIG. is there. In the first embodiment, the connection rope 11 is connected to the center of the door device housing 1 in the frontage direction. However, in the third embodiment, the connection port 11 is connected to the front end of the door device housing 1 in the frontage direction. For this reason, the door body 3 is urged in the door opening direction by the gravity acting on the weight 10. However, in the door closed state, the door body 3 is locked at the door closed position, so that the door body 3 does not open naturally without releasing the lock.

Further, in Embodiment 1, since the operation direction of the second connection portion 9b and the operation direction of the movable shield 14 are opposite, the direction change roller 22 is used. However, in Embodiment 3, Since the operating directions of the second connecting portion 9b and the movable shield 14 are the same, the direction changing roller is unnecessary. Other configurations are the same as those in the first embodiment.

Even with such a configuration, the movable shield 14 contacts the landing sill 7 when the door is closed, and the movable shield 14 does not contact the landing sill 7 during the opening / closing operation. While maintaining the performance, the gap at the lower end of the door body 3 can be more reliably shielded when the door is closed. As a result, smoke and sound insulation can be improved.

Also, a connecting rope 11 is connected between the swing lever 9 and the door device housing 1, and the swing lever 9 is moved in conjunction with opening and closing of the door body 3. Since the movable shield 14 is moved toward and away from the landing threshold 7 by swinging, the configuration can be simplified, and mounting and adjustment can be facilitated. In the first to third embodiments, the swing lever and the movable shield are connected by a short rope, but may be connected by a link member, for example.

In Embodiments 1 to 3, the landing door device has been described. However, the present invention can also be applied to a car door device, and can improve sound insulation and smoke insulation. In this case, it is preferable that the movable shield comes into contact with the floor on the inside of the car room rather than the car threshold groove.

Further, the present invention can be applied to a center opening type door device and an enclosing type door device, and can be applied to a single door device and a door device having a plurality of doors.

Claims

The scope of the claims

1. Door body that opens and closes the entrance

A swing member mounted on the door body and swinging about a swing axis in conjunction with the opening and closing operation of the door body;

A connection rope connected between the fixed portion fixed to the landing entrance and the swinging member, and

It is provided at the lower end of the door body so as to be movable up and down, and is connected to the swinging member, and abuts on the floor of the entrance to shield a gap between the lower end of the door body and the floor. Movable shield

In the door-closed state, the movable shield is in contact with the floor, and during the initiating operation, the swinging member is swung so that the movable shield is separated from the floor. Door device for Jerebe night.

2. The entrance is a landing entrance, and a door leg is provided at a lower end of the door body. The movable shield is a floor on a landing side from a threshold groove into which the door leg is inserted. 2. The door device according to claim 1, wherein the door device comes into contact with and separates from the part.

3. The doorway is a car doorway, and a door leg is provided at the lower end of the door body. The movable shield is located closer to the inside of the car than the sill groove into which the door leg is inserted. 2. The door device for an elevator according to claim 1, wherein the door device comes into contact with and separates from a floor portion.

4. The door device according to claim 1, wherein the door main body is provided with a rotatable connection rope guide roller for guiding the connection rope to the swing member.

5. The swing member has a first connection portion to which the connection rope is connected, and a second connection portion to be connected to the movable shield. 2. The door device for an elevator according to claim 1, wherein a distance to the second connection portion is greater than a distance from the drive shaft to the second connection portion. 3.

6. The door device according to claim 1, further comprising a biasing means for biasing the swinging member in a direction in which the movable shield contacts the floor.

7. The door device according to claim 6, wherein the connection rope is arranged so that the door body is urged in the door closing direction by the urging means.

8. The door device for an elevator overnight according to claim 6, wherein the urging means is a weight mounted on the swing member.

9. The door device according to claim 1, wherein the fixing portion is a door device housing fixed above the entrance and to which a door rail for guiding opening and closing of the door body is attached.