JPWO2004106213A1 - Elevator door equipment - Google Patents

Abstract

In an elevator door device, a swing member that swings about a swing shaft in conjunction with opening and closing operations of the door body is mounted on the door body. A connecting rope is connected between the fixed portion fixed to the landing doorway and the swing member. A movable shield that can move up and down is provided at the lower end of the door body. The movable shield is connected to the swing member, and shields the gap between the lower end of the door body and the floor by contacting the floor of the doorway. In the door-closed state, the movable shield is brought into contact with the floor, and the swinging member is swung so that the movable shield is separated from the floor during the door opening operation.

Description

  The present invention relates to an elevator door device having a door main body that opens and closes a landing doorway or a car doorway.

For example, in a conventional elevator disclosed in Japanese Patent Application Laid-Open No. 8-67486, a clearance between the lower end of the landing door and the landing sill is provided by providing a lower packing in contact with the sill groove at the lower end of the landing door. A structure for shielding 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. Moreover, since it is necessary to frequently replace the worn lower packing, the cost is increased and maintenance is required.
Moreover, in the conventional elevator shown in the registered utility model abstract No. 3032400, there is shown a shield that is displaced obliquely downward when the door is closed and shields the gap between the lower end of the landing door and the sill. . However, in such a structure, it is necessary to strictly adjust and maintain the mounting position of the shield. This is because if the shield comes in contact with the sill before the landing door is completely closed, the landing door will not be fully closed. This is because a gap remains when the valve is fully closed. Therefore, it takes time to install and maintain the shield.

The present invention has been made to solve the above-described problems, and can more reliably shield the gap at the lower end of the door body when the door is closed while maintaining the opening / closing performance of the door body. The purpose is to obtain an elevator door device that can be used.
An elevator door device according to the present invention is mounted on a door body that opens and closes an entrance, a swinging member that swings about a swinging shaft in conjunction with the opening and closing operation of the door body, and fixed to a landing doorway A connecting rope connected between the fixed portion and the swinging member, and a lower end portion of the door body that is movable up and down, connected to the swinging member, and in contact with the floor of the entrance / exit A movable shield that shields the gap between the lower end of the door body and the floor is provided. When the door is closed, the movable shield is in contact with the floor, and during the door opening operation, the movable shield is the floor. The swing member is swung so as to be separated from

1 is a rear view showing a door closing state of a landing door device for an elevator according to Embodiment 1 of the present invention;
FIG. 2 is a rear view showing a door open state of the landing door device of FIG.
FIG. 3 is a rear view showing an enlarged main part of the landing door device of FIG.
4 is a sectional view taken along line IV-IV in FIG.
FIG. 5 is an enlarged rear view showing the main part of the landing door device of FIG.
6 is a sectional view taken along line VI-VI in FIG.
FIG. 7 is a rear view showing a door open state of a landing door device for an elevator according to Embodiment 2 of the present invention;
8 is a rear view showing a door-closed state of an elevator landing door device according to Embodiment 3 of the present invention;
FIG. 9 is a rear view showing a door open state of the landing door device of FIG.

Preferred embodiments of the present invention will be described below with reference to the drawings.
1 is a rear view showing a door closed state of a landing door device for an elevator according to Embodiment 1 of the present invention (viewed from a hoistway side), and FIG. 2 is a rear view showing a door open state of the landing door device of FIG. 3 is an enlarged rear view showing the main part of the landing door device of FIG. 1, FIG. 4 is a sectional view taken along line IV-IV of FIG. 3, and FIG. 5 is an enlarged main part of the landing door device of FIG. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG.
In the figure, a door device casing 1 as a fixing portion is fixed above the landing entrance 20. A door rail 2 that extends along the frontage direction of the hall entrance 20 is fixed to the door device housing 1. The landing entrance 20 is opened and closed by a pair of door bodies 3. Opening and closing of the door body 3 is guided by the door rail 2.
A door hanger 4 for hanging 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 to the floor of the landing entrance. The landing threshold 7 is provided with a threshold groove 7a into which a door leg 6 is inserted. The threshold groove 7a extends along the frontage direction of the landing entrance 20 and guides the lower end portion 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 is swung in conjunction with the opening / closing operation of the door body 3. The swing lever 9 has first and second connecting portions 9a and 9b. The first and second connection portions 9 a and 9 b are disposed on the opposite sides with respect to the swing shaft 8. 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.
A connection rope 11 is connected between the first connection portion a of each swing lever 9 and the central portion 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 that guide the connection rope 11 to the swing lever 9.
A movable shield 14 that can move up and down is provided at the lower end of each door body 3. The movable shield 14 shields the gap between the lower end portion of the door body 3 and the upper surface of the landing sill 7 by contacting the landing sill 7 when the door is closed. In addition, the movable shield 14 contacts and separates from the landing threshold 7 on the landing side with respect to the threshold groove 7a.
Furthermore, the movable shield 14 includes a shield base 15 and a shield member 16 that is fixed to the lower end of the shield base 15 and contacts and separates from the landing sill 7. An engaging portion 15 a is provided at the upper end portion of the shield base 15. The shielding member 16 extends over the entire width direction of the door body 3. The shielding member 16 is made of a highly airtight material such as rubber.
A pair of hook guides 17 extending in the vertical direction are attached in parallel to each other below the swing lever 9 on the back surface of each door body 3. A hook 18 that engages with the engaging portion 15 a is disposed between the hook guides 17. A hook roller 19 that rolls along the hook guide 17 is provided at both ends of each hook 18. The hook 18 is guided by the hook guide 17 and can move up and down.
A short rope 21 is connected between the second connecting portion 9 b of the swing lever 9 and the hook 18. Above the swing lever 9 on the back surface of the door body 3, a rotatable direction changing roller 22 around which a short rope 21 is wound is provided. The direction changing roller 22 reverses the direction of the short rope 21. A plurality of rotatable short rope guide rollers 23 a and 23 b that guide 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 first connecting portion 9a side, a weight 10 is mounted as a biasing means that biases the swing lever 9 in a direction in which the movable shield 14 abuts the landing sill 7. . The connection rope 11 and the connection rope guide rollers 13 a to 13 c 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 door-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 the 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 portion of the door body 3 and the upper surface of the landing sill 7 is shielded by the movable shield 14. Thereby, the smoke generated by the fire is prevented from entering the hoistway from 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 against the urging force of the weight 10 on the door body 3. Thereby, the swing lever 9 is swung in the direction in which the first connecting portion 9a and the weight 10 are displaced upward. As the swing lever 9 swings, the movable shield 14 rises and is separated from the landing threshold 7. During the door closing operation, the movable shield 14 gradually descends, and the shielding member 16 contacts 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 wear of the shielding member 16 and generation of noise are prevented.
In such a landing door device, when the door is closed, the movable shield 14 is brought into contact with the landing threshold 7, and the movable shield 14 is prevented from contacting the landing threshold 7 during the opening / closing operation. While maintaining the opening / closing operation performance, the gap at the lower end of the door body 3 can be more reliably shielded in the door-closed state. Thereby, smoke insulation and sound insulation can be improved.
Further, a connection rope 11 is connected between the swing lever 9 and the door device housing 1, and the swing lever 9 is swung in conjunction with opening and closing of the door body 3. Since the movable shield 14 is brought into contact with and separated from the landing threshold 7, the configuration can be simplified, and attachment and adjustment can be facilitated.
Further, since the movable shield 14 contacts and separates from the landing sill 7 on the landing side with respect to the sill groove 7a, it is possible to prevent smoke from entering the panel of the door body 3, and the smoke passes through the panel. Thus, entry to the hoistway side can also be prevented. In addition, damage to the shielding member 16 can be easily confirmed from the landing side, and workability during maintenance can be improved.
Furthermore, since the connection hanger 4 and the door body 3 are provided with connection rope guide rollers 13a to 13c for guiding the connection rope 11 to the swing lever 9, it is easy for the connection rope 11 to interfere with other devices. Can be prevented.
Further, 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 opened and closed. It can be made smaller than the stroke, and the arrangement space of the movable shield 14 can be reduced.
Furthermore, since the connection rope 11 is arranged so that the door body 3 is biased in the door closing direction by the weight 10, it is necessary to provide another means for biasing the door body 3 in the door closing direction. 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. FIG.
Next, FIG. 7 is a rear view showing the door opening state of the elevator hall door device according to Embodiment 2 of the present invention.
In the figure, a swing lever 31 as a swing member that can swing around a swing shaft 30 is attached to the back surface of each door body 3. The swing lever 31 is swung in conjunction with the opening / closing operation of the door body 3. The swing lever 31 includes first and second connection portions 31a and 31b. The first and second connection portions 31 a and 31 b are disposed on the same side with respect to the swing shaft 30. The distance from the swing shaft 30 to the first connection portion 31a is larger than the distance from the swing shaft 30 to the second connection portion 31b.
A connecting rope 11 is connected between the first connecting portion 31a and the central portion of the door apparatus housing 1 in the frontage direction. A short rope 21 is connected between the second connection portion 31 b and the hook 18. A plurality of rotatable short rope guide rollers 32 a and 32 b that guide the short rope 21 from the second connection portion 31 b to the hook 18 are provided on the back surface of the door body 3.
At the end of the swing lever 31 on the first connection portion 31a side, a weight 10 is mounted as a biasing means for biasing the swing lever 9 in a direction in which the movable shield 14 abuts the landing sill 7. . The connecting 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.
Thus, even when the first and second connection portions 31a and 31b are arranged on the same side with respect to the swing 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 biasing means, but the biasing means is not limited to the weight, and for example, a torsion spring or the like can be used.
Moreover, you may provide the spring which presses a movable shield against a sill between a door main body and a movable shield as a biasing means.
Furthermore, a weight may be mounted on the movable shield.
Furthermore, the movable shield may be caused to function as a weight by utilizing its own weight.
Embodiment 3 FIG.
Next, FIG. 8 is a rear view showing the door closing state of the elevator landing door device according to Embodiment 3 of the present invention, and FIG. 9 is a rear view showing the door opening state of the landing door device of FIG.
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 rope 11 is connected to the front end of the door device housing 1 in the frontage direction. . For this reason, the door main body 3 is urged in the door opening direction by the gravity acting on the weight 10. However, since the door body 3 is locked at the door closing position in the door closed state, the door body 3 does not naturally open without being unlocked.
Moreover, in Embodiment 1, since the operation direction of the 2nd connection part 9b and the operation direction of the movable shield 14 were reverse directions, the direction change roller 22 was used, but in Embodiment 3, it is 2nd connection. Since the operation directions of the 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 in such a configuration, the movable shield 14 is in contact with the landing threshold 7 in the door-closed state, and the movable shield 14 does not contact the landing threshold 7 during the opening / closing operation. It is possible to more reliably shield the gap at the lower end of the door body 3 while maintaining the door closed. Thereby, smoke insulation and sound insulation can be improved.
Further, a connecting rope 11 is connected between the swing lever 9 and the door device housing 1, and the swing lever 9 is swung in conjunction with opening and closing of the door body 3. Since the movable shield 14 is brought into and out of contact with the landing threshold 7, the configuration can be simplified, and attachment 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 can be connected by, for example, a link member.
Moreover, although Embodiment 1-3 demonstrated the landing door apparatus, this invention can be applied also to a car door apparatus, and can improve sound insulation and smoke insulation. In this case, it is preferable that the movable shield is in contact with the floor portion on the side of the interior of the car relative to the sill groove of the car.
Further, the present invention can be applied to a center opening type door apparatus or a single opening type door apparatus, and can also be applied to a door apparatus having a single door or a plurality of doors.

Claims (9)

Door body that opens and closes the doorway,
A swing member mounted on the door body and swinging about a swing shaft in conjunction with opening and closing operations of the door body;
A connecting rope connected between the fixed part fixed to the landing doorway and the swinging member; and a lower end of the door body that is provided to be movable up and down and connected to the swinging member. A movable shield that shields the gap between the lower end of the door body and the floor by abutting against the floor of the doorway, and in the closed state, the movable shield contacts the floor. An elevator door device in which the swinging member is swung so that the movable shield is separated from the floor during the door opening operation. The doorway is a landing doorway, and a door leg is provided at the lower end of the door body. The elevator door device according to claim 1 which is separated. The doorway is a car doorway, and a door leg is provided at the lower end of the door body. The elevator door device according to claim 1, which comes in contact with or separates from the door. The elevator door device according to claim 1, wherein the door body is provided with a rotatable connection rope guide roller for guiding the connection rope to the swing member. The swing member has a first connection portion to which the connection rope is connected and a second connection portion connected to the movable shield, and the swing member extends from the swing shaft to the first connection portion. The elevator door device according to claim 1, wherein a distance is greater than a distance from the swing shaft to the second connection portion. The elevator door device according to claim 1, further comprising a biasing unit that biases the swing member in a direction in which the movable shield comes into contact with the floor portion. The elevator 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. The elevator door device according to claim 6, wherein the biasing means is a weight mounted on the swing member. The elevator door device according to claim 1, wherein the fixing portion is a door device housing fixed above the doorway and attached with a door rail for guiding opening and closing of the door body.

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