JP2005022828A - Door device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door device of an elevator smoothly opening/closing a door, with improved smoke shielding property and sound insulation property. <P>SOLUTION: A door body 2 is disposed to an entrance 1 of the elevator to open/close the entrance 1. A door foot 6 is disposed to a lower end part of the door body 2 and inserted into a threshold groove 4. A shielding body 11 is disposed to the lower end part of the door body 2 to cover a clearance between the door body 2 and a threshold 3. The shielding body 11 has a fixed plate 12, and a turning plate 13 inserted into the threshold groove 4 to be turnable in a direction in contact with/separated from a side wall face of the threshold groove 4. A projection part 21 is disposed to the threshold groove 4 to be brought into contact with the turning plate 13 along with reciprocating motions of the door body 2. When the turning plate 13 is brought into contact with the projection part 21 in closing the door, the turning plate 13 is turned in the direction in contact with the side wall face of the threshold groove 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator door device having a sliding door that opens and closes an elevator doorway.
[0002]
[Prior art]
Conventionally, a smoke shielding structure for preventing smoke generated by a fire from entering a hoistway from a gap between a lower end of a landing door and a sill has been proposed. In this smoke shielding structure, the lower smoke shielding plate is fixed to the lower end portion of the landing door together with the door foot (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 8-165081
[Problems to be solved by the invention]
In the conventional smoke shielding structure as described above, since the shielding plate and the sill are always in contact with each other, there is a risk that smooth opening and closing of the landing doors may be hindered. In addition, the shield plate and the sill may be worn due to the sliding of the shield plate with respect to the sill. In addition, noise generated in the hoistway may be transmitted to the inside of the hall or cab through a slight gap between the door foot and the sill groove.
[0005]
The present invention has been made in order to solve the above-described problems, and is an elevator door that can smoothly open and close the door and can improve smoke insulation and sound insulation. The object is to obtain a device.
[0006]
[Means for Solving the Problems]
An elevator door device according to the present invention includes a door main body that opens and closes an elevator door, a rotary plate that is provided at a lower end portion of the door main body and is rotatable about an axis extending along a moving direction of the door main body, And a protrusion that is provided in a sill groove into which the rotating plate is inserted, and that rotates the rotating plate by contacting the rotating plate by the movement of the door body. The rotating plate rotates when the door is closed. Is pressed against the inner surface of the sill groove, and is separated from the inner surface of the sill groove by rotation when the door is opened.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is an exploded perspective view showing an elevator door device according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view of an essential part showing the elevator door device according to Embodiment 1 of the present invention. In the figure, a door body 2 capable of opening and closing the entrance 1 is provided at the entrance 1 of the hall. A door rail (not shown) extending along the entrance direction of the entrance 1 is fixed to the upper part of the entrance 1. The door body 2 is suspended from the door rail. A threshold 3 is arranged on the floor of the entrance 1. The sill 3 is formed with a sill groove 4 extending along the frontage direction of the doorway 1. At the lower end of the door body 2, a plurality (two in this case) of door legs 6 inserted in the threshold groove 4 are provided. The door body 2 is reciprocated along the door rail by a driving device (not shown). The doorway 1 is opened and closed by the reciprocating motion of the door body 2.
[0008]
The door body 2 includes a door panel 5 and a reinforcing member 7 that is fixed to the back surface of the lower end portion of the door panel 5 and reinforces the door panel 5. The reinforcing member 7 is manufactured by bending a metal plate into a predetermined shape. Each door foot 6 has a plate-like attachment portion 9 for attachment to the reinforcing member 7 and a rectangular parallelepiped insertion portion 10 provided in the lower end portion of the attachment portion 9 and inserted into the sill groove 4. is doing. Each attachment portion 9 is fixed to the reinforcing member 7 via a plurality of fixing spacers 8.
[0009]
The reinforcing member 7 is also fixed with a shield 11 for shielding the gap between the door body 2 and the sill 3. The length of the shield 11 is substantially the same as the length of the door body 2 in the width direction. The shield 11 includes a fixed plate 12 disposed between the reinforcing member 7 and the door foot 6, and a rotary plate 13 that is rotatably connected to a lower edge portion of the fixed plate 12. . The fixing plate 12 is fixed to the reinforcing member 7. The rotating plate 13 is connected to the fixed plate 12 by a shaft portion 14 extending along the opening direction of the entrance 1. The rotating plate 13 is rotatable about the axis of the shaft portion 14. Here, the rotating plate 13 is hung from the fixed plate 12.
[0010]
The fixing plate 12 is provided with a plurality of spacer escape holes 15 in which the respective fixing spacers 8 are respectively arranged. Each fixing spacer 8 is directly fixed to the reinforcing member 7 through the inside of each spacer escape hole 15.
[0011]
The rotation plate 13 is provided with a plurality of insertion portion relief holes 16 for avoiding mutual interference between the insertion portions 10 and the rotation plate 13. Each insertion portion 10 is passed through each insertion portion relief hole 16. Thereby, the rotation board 13 is rotated without being interrupted by each insertion part 10.
[0012]
The rotating plate 13 has a rotating plate main body 17 provided with each insertion portion relief hole 16 and an extending portion 18 extending downward from a part of the lower end portion of the rotating plate main body 17. Yes. Here, the lower end portion of the rotating plate main body 17 is bent so that the extending portion 18 is arranged to be shifted to the hoistway side from the rotating plate main body 17.
[0013]
A packing member 19 made of an elastic material such as rubber having flexibility is provided at the lower edge portion of the surface on the landing side of the rotating plate body 17. In addition, closing members 20 made of a material such as rubber are provided at both ends in the longitudinal direction (the entrance direction of the entrance / exit 1) of the surface on the landing side of the rotating plate body 17. In the door-closed state, the gap between the inner surface of the threshold groove 4 and the rotating plate 13 is shielded by the closing member 20.
[0014]
In the sill groove 4, there is a protrusion 21 that rotates the rotating plate 13 in a direction in contact with the side wall surface on the landing side of the sill groove 4 when the rotating plate 13 contacts when the door body 2 is closed. Is provided. The protrusion 21 is provided on the inner surface of the threshold groove 4 on the hoistway side. The protrusion 21 is formed with an inclined surface 22 with which the extension 18 of the rotating plate 13 comes into contact with the movement of the door body 2. The rotating plate 13 is rotated in a direction away from the side wall surface on the landing side of the sill groove 4 when the door is opened by contact with the inclined surface 22 of the extending portion 18, and the sill groove 4 is closed when the door is closed. It is rotated in a direction in contact with the side wall surface on the landing side.
[0015]
FIG. 3 is a cross-sectional view of the main part showing the door closed state of the door body 2 of FIG. In the figure, when the door body 2 is in the door closed state (fully closed state), the lower edge portion of the rotating plate body 17 is pressed against the side wall surface on the landing side of the sill groove 4. At this time, the packing member 19 provided at the lower edge of the rotating plate body 17 is in contact with the side wall surface of the sill groove 4.
[0016]
Next, the operation will be described.
When the door main body 2 is in the door open state (fully open state), the rotating plate 13 is hung from the door main body 2 and separated from the side wall surface of the sill groove 4.
[0017]
When the door body 2 is moved during the door closing operation and approaches the fully closed state, the extending portion 18 of the rotating plate 13 contacts the inclined surface 22 of the protruding portion 21. When the landing door 2 is further moved, the rotation plate 13 is rotated while being in contact with the inclined surface 22 in a direction in contact with the side wall surface of the threshold groove 4 on the landing side. When the door body 2 is fully closed, the rotating plate 13 is pressed against the side wall surface of the sill groove 4 via the packing member 19.
[0018]
During the door opening operation, the rotating plate 13 is separated from the side wall surface of the sill groove 4 by the reverse operation during the door closing operation. That is, by the movement of the door body 2 during the door opening operation, the rotating plate 13 is rotated in the opposite direction to that during the door closing operation while being in contact with the inclined surface 22 by its own weight, and is separated from the side wall surface of the sill groove 4. It is.
[0019]
In the elevator door device having such a configuration, the rotating plate 13 inserted into the sill groove 4 contacts the protrusion 21 in the sill groove 4 when the door body 2 is closed, so that the Since it is rotated in the direction in contact with the side wall surface, the gap between the door main body 2 and the side wall surface of the sill groove 4 can be shielded by the rotation plate 13, and the smoke and sound insulation properties can be achieved with a simple structure. Can be improved. Further, when the door body 2 is opened and closed, the rotation plate 13 is separated from the side wall surface of the sill groove 4 by the rotation of the rotation plate 13, so that the door body 2 can be opened and closed smoothly. can do. Therefore, sliding noise due to the movement of the door body 2 can be prevented, and wear of the sill groove 4 and the rotating plate 13 can also be prevented.
[0020]
Further, when the door body 2 is opened, the rotating plate 13 is rotated in the direction away from the side wall surface of the sill groove 4 by its own weight. The resistance due to contact with 21 can be reduced, and the loss of driving force required to open and close the doorway 1 can be reduced.
[0021]
Further, since the projecting portion 21 is formed with the inclined surface 22 for guiding the rotation of the rotating plate 13, the rotating plate 13 can be smoothly rotated by the movement of the door body 2.
[0022]
Moreover, since the rotation plate 13 is rotated in a direction in contact with the side wall surface on the landing side of the threshold groove 4 when the door body 2 is closed, the amount of smoke flowing into the threshold groove 4 from the landing side is reduced. Can be reduced. Thereby, the smoke-insulating property of the elevator door device can be further improved.
[0023]
Further, since the packing member 19 is provided at the lower edge portion of the rotating plate 13, it is possible to reduce an impact sound caused by the rotating plate 13 being pressed against the side wall surface of the sill groove 4. Further, since the packing member 19 is pressed against the side wall surface of the sill groove 4, the airtightness between the side wall surface of the sill groove 4 and the rotating plate 13 can be improved. Therefore, the leakage of smoke and sound can be reduced, and smoke insulation and sound insulation can be further improved.
[0024]
Further, since the closing members 20 are provided at both ends in the longitudinal direction of the rotating plate 13, the gap between the inner surface of the threshold groove 4 and the rotating plate 13 is shielded by both ends in the longitudinal direction of the rotating plate 13. be able to. Therefore, the flow of smoke in the sill groove 4 can be blocked at both ends in the longitudinal direction of the rotating plate 13, and the smoke and sound insulation properties of the elevator door device can be further improved.
[0025]
Embodiment 2. FIG.
FIG. 4 is an exploded perspective view showing an elevator door device according to Embodiment 2 of the present invention. In the figure, the rotating plate 31 has a rotating plate main body 32 and a plurality of (here, two) extending portions 33 and 34 extending from a part of the rotating plate main body 32. . The extending portion 33 extends downward from the lower portion of one end portion in the longitudinal direction of the rotating plate 31, and the extending portion 34 extends from the upper portion of the other end portion in the longitudinal direction of the rotating plate 31 to the hoistway side. The lower edge portion of the rotating plate main body 32 is bent so that the extending portion 33 is disposed closer to the hoistway than the rotating plate main body 32.
[0026]
The rotation plate body 32 is provided with a plurality of insertion portion relief holes 16 corresponding to the positions of the insertion portions 10. A packing member 19 is provided on the lower edge portion of the surface on the landing side of the rotating plate main body 32. Further, at both ends in the longitudinal direction of the rotating plate main body 32, plate-like blocking members 35 extending from the rotating plate main body 32 to the landing side are provided. In a state where the rotating plate 31 is pressed against the side wall surface of the sill groove 4 via the packing member 19, the gap between the side wall surface of the sill groove 4 and the rotating plate 31 is shielded by the closing member 35.
[0027]
A plurality (two in this case) of protrusions 36 and 37 are provided on the side wall surface on the hoistway side in the threshold groove 4. The protrusions 36 and 37 are arranged at different heights in the threshold groove 4. That is, the protrusions 36 and 37 are different from each other in the depth direction in the threshold groove 4. Here, the protruding portion 36 is disposed at a position lower than the protruding portion 37. The protrusion 36 is formed with an inclined surface 38 with which the extended portion 33 comes into contact with the movement of the door body 2. The protrusion 37 is formed with an inclined surface 39 with which the extended portion 34 comes into contact with the movement of the door body 2. The rotating plate 31 is rotated by the extension portions 33 and 34 coming into contact with the projecting portions 36 and 37 as the door body 2 moves. The rotating plate 31 is rotated in a direction in contact with the side wall surface on the landing side of the sill groove 4 during the door closing operation, and is rotated in a direction away from the side wall surface of the sill groove 4 during the door opening operation.
[0028]
The inclination angle of the inclined surface 38 with respect to the inner surface of the sill groove 4 on the hoistway side is larger than the inclination angle of the inclined surface 39 with respect to the inner surface of the sill groove 4 on the hoistway side. That is, the inclination angles of the inclined surfaces 38 and 39 are set in accordance with the movement distances of the extending portions 33 and 34 due to the rotation of the rotation plate 31. Thereby, the rotation plate 31 in the fully closed state of the door main body 2 can be applied to the side wall surface of the sill groove 4 via the packing member 19 without applying excessive pressing force by the projections 36 and 37. Pressed. Other configurations and operations are the same as those in the first embodiment.
[0029]
In such an elevator door device, the protrusions 36 and 37 in the sill groove 4 are arranged at different heights, and the extension parts 33 and 34 of the rotating plate 31 are moved by the movement of the door body 2. 37, so that a plurality of portions of the rotating plate 31 can be pressed against the side wall surface of the sill groove 4 by the projections 33 and 34, and the entire rotating plate 31 can be pressed. A pressing force can be applied. Therefore, the shielding property and sound insulation property of the elevator door device can be further improved.
[0030]
Moreover, since the plate-shaped closing member 35 extended from the rotation board main body 32 to the landing side is provided in the longitudinal direction both ends of the rotation board main body 32, it flows in into the threshold groove 4 from the landing side. The smoke flow can be blocked at both ends of the rotating plate 13, and the smoke and sound insulation properties of the elevator door device can be further improved.
[0031]
In the above example, two extending portions 33 and 34 are provided in the rotating plate main body 32 and two protrusions 36 and 37 are provided in the sill groove 4. Good. In this case, each extending part is arrange | positioned in the mutually different height of the rotation board 31, and each projection part is also arrange | positioned in the different height in the sill groove | channel 4 corresponding to each extending part. Thereby, the pressing to the rotating plate 31 by the protrusions can be made more uniform over the entire rotating plate 31, and the smoke and sound insulating properties of the elevator door device can be further improved.
[0032]
Moreover, in each said embodiment, although the packing member 19 is provided in the rotation board main bodies 17 and 32, you may provide the packing member 19 in the side wall surface of the sill groove | channel 4. FIG. Even in this case, when the rotating plates 13 and 31 are pressed toward the side wall surface of the sill groove 4, the packing member 19 is interposed between the side wall surface of the sill groove 4 and the rotating plates 13 and 31. It is possible to improve the smoke insulation and sound insulation of the elevator door device.
[0033]
Moreover, in each said embodiment, although the packing member 19 is produced with the rubber material, you may produce a packing member with a resin material, a fiber, etc., for example.
[0034]
Further, in each of the above embodiments, the rotary plates 13 and 31 are separated from the side wall surface of the sill groove 4 by the dead weight of the rotary plates 13 and 31 during the door opening operation, but the shaft portion 14 The rotating plates 13 and 31 may be separated from the side wall surface of the sill groove 4 by an urging spring provided on the wall. In this case, the rotating plates 13 and 31 are always urged by the urging spring in a direction away from the side wall surface of the sill groove 4. At the time of the door closing operation, the rotating plates 13 and 31 are rotated against the urging force of the urging spring by contact with the protrusions, and pressed against the side wall surface of the sill groove 4 via the packing member 19.
[0035]
Moreover, in each said embodiment, although the shield 11 is integrated in the width direction of the sliding door main body 5, you may divide | segment the shield 11 into multiple and arrange | position in the width direction of the sliding door main body 5. FIG.
[0036]
Moreover, although each said embodiment demonstrated the door device by the side of a landing, this invention can be applied also to the door device by the side of a car, and can improve sound insulation property and smoke insulation property.
[0037]
【The invention's effect】
As is apparent from the above description, in the elevator door device according to the present invention, the rotating plate inserted into the sill groove comes into contact with the protrusion in the sill groove when the door body is closed. Since it is rotated in the direction in contact with the side wall surface of the groove, it is possible to shield the gap between the door body and the sill groove with the rotating plate when the door is closed. Can be improved. Further, when the door body is opened and closed, the rotating plate is separated from the side wall surface of the sill groove, so that the door body can be opened and closed smoothly. Therefore, sliding noise due to movement of the door body can be prevented, and wear of the sill groove and the rotating plate can also be prevented.
[Brief description of the drawings]
1 is an exploded perspective view showing an elevator door device according to Embodiment 1 of the present invention;
FIG. 2 is a sectional view of an essential part showing an elevator door device according to Embodiment 1 of the present invention;
3 is a cross-sectional view of a main part showing a door closed state of the door main body of FIG. 2;
FIG. 4 is an exploded perspective view showing an elevator door device according to Embodiment 2 of the present invention;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Entrance / exit, 4 Sill groove, 5 Door main body, 13, 31 Rotation plate, 17, 32 Rotation plate main body, 18, 33, 34 Extension part, 19 Packing member (elastic body), 20, 35 Closure member, 21 36, 37 Protruding part, 22, 38, 39 Inclined surface.

Claims (7)

The door body that opens and closes the elevator doorway,
A rotating plate provided at a lower end portion of the door body and inserted into a sill groove provided in a floor of the doorway, and rotatable in a direction contacting and separating from a side wall surface of the sill groove, and the sill A protrusion is provided in the groove and rotates the rotating plate in a direction in contact with the side wall surface when the rotating plate comes into contact with the door body when the door body is closed. Elevator door device. 2. The elevator door device according to claim 1, wherein when the door main body is opened, the rotating plate rotates in a direction away from the side wall surface by its own weight. 3. The elevator door device according to claim 1, wherein an inclined surface that guides the rotation of the rotating plate is formed on the protrusion. 4. The said entrance / exit is a landing entrance / exit, and the said rotation board is rotated in the direction which touches the side wall surface at the side of the landing of the said sill groove | channel at the time of the door closing operation | movement of the said door main body. The elevator door device according to any one of Items 3 to 4. The rotating plate has a rotating plate main body and a plurality of extending portions extending from the rotating plate main body,
A plurality of the protrusions are arranged at different heights in the sill groove,
5. The elevator door according to claim 1, wherein each of the protrusions is brought into contact with each of the protrusions by movement of the door body. 6. apparatus. At least one of the side wall surface of the sill groove and the rotation plate is provided with an elastic body so as to be interposed between the rotation plate and the side wall surface of the sill groove. The elevator door device according to any one of claims 1 to 5. The closing member which shields the clearance gap between the said rotating plate and the inner surface of the said threshold groove is provided in the longitudinal direction edge part of the said rotating plate, The Claim 1 thru | or 6 characterized by the above-mentioned. The elevator door device according to any one of the above.

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