JP4245932B2 - Elevator landing door equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a landing door device for an elevator that blocks a landing entrance for fire prevention and smoke prevention.
[0002]
[Prior art]
In a conventional elevator hall door device, a fire door is provided at the hall entrance separately from the hall door for fire prevention and smoke prevention. A conventional fire door is folded into a three-way frame at a landing entrance for normal storage. In the event of a disaster such as a fire, the folded fire door is deployed by detecting smoke from the smoke detector and blocks the landing doorway (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-226163
[Problems to be solved by the invention]
In such an elevator hall door device, it is necessary to process the three-way frame of the hall entrance in order to secure a storage space for the folded fire door. In addition, since the fire door is installed separately from the landing door, installation of the fire door takes time and cost. Furthermore, the design of the hall is lowered by the installation of fire doors.
[0005]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems, and to obtain an elevator landing door device that can be easily installed and can prevent deterioration of the design of the landing. For the purpose.
[0006]
[Means for Solving the Problems]
An elevator hall door device according to the present invention includes a door base that can reciprocate in the entrance direction of the hallway, and a door panel that is mounted on the door base and can be displaced toward the hall with respect to the door base. A landing door that opens and closes the entrance, a biasing means that is provided between the door base and the door panel, biases the door panel toward the landing, and is mounted on the landing door. The landing of the door panel against the biasing of the biasing means Holding means for preventing displacement to the side, and holding release means mounted on the landing door and releasing the holding of the door panel of the holding means , the holding means being provided on the door base and a hook portion provided on the door panel And an engagement portion that is displaceable between an engagement position that engages with the hook portion to prevent displacement of the door panel toward the landing side and an engagement release position that releases the engagement with the hook portion. The hook part The section, the stepped portion is provided, the door panel holding is released by the holding means by unlatching means door closed, the landing side by biasing means hook by the step portion is a door panel while avoiding a door base And it is displaced below and is contact | abutted to the peripheral part of a landing doorway, and the clearance gap between a door and a peripheral part of a landing is obstruct | occluded.
[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 a rear view (viewed from a hoistway side) showing a landing door device for an elevator according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the main part showing the elevator landing door device of FIG. In the figure, a landing doorway 1 is provided with two landing doors 2 that can reciprocate. Three-way frames 3 are arranged on the upper and both sides of the landing entrance 1. A door rail 5 extending along the entrance direction of the landing entrance 1 is fixed to the wall surface on the hoistway 4 side above the three-way frame 3. A door hanger 6 is fixed to the upper part of the landing door 2. The landing door 2 is supported by the door hanger 6 being suspended from the door rail 5. The landing door 2 is reciprocated along the door rail 5 by driving a door driving device (not shown). The hall entrance 1 is opened and closed by the reciprocating movement of the hall door 2.
[0008]
A plurality of door legs 7 are fixed to the lower part of the door 2 of each landing. A landing threshold 10 having a threshold groove 9 is fixed to a landing floor 8 below the landing door 2. A door leg 7 is inserted into the threshold groove 9. The door leg 7 is guided to the threshold groove 9 by the reciprocating motion of the door 2 of the landing. The peripheral edge of the hall entrance 1 is composed of a three-way frame 3 and a hall threshold 10.
[0009]
The door 2 of each landing has a panel-like door base 11 that can reciprocate in the frontage direction of the landing entrance 1 and a door panel 12 mounted on the door base 11. The door hanger 6 and the door leg 7 are fixed to the upper and lower portions of the door base 11, respectively. The door panel 12 can be displaced toward the landing 13 with respect to the door base 11. Each door base 11 has a rectangular panel base body 14 provided with three holes 32 and three fixing plates 15 fixed to the base body 14 corresponding to the positions of the holes 32. ing. Each hole 32 is provided at three corners of the upper and lower parts of the base body 14 on the door opening direction side and the upper part on the door closing direction side.
[0010]
Between each fixed plate 15 and the door panel 12, a spring 16 is provided as a biasing means for biasing the door panel 12 toward the landing 13 side. A plurality of engagement mechanisms 17, which are holding means for preventing the door panel 12 from being displaced toward the landing 13, against the bias of the spring 16, are mounted on the landing door 2. The spring 16 and the engagement mechanism 17 are arranged corresponding to the position of each fixing plate 15. Each door base 11 is equipped with a release device 18 (FIG. 1) that is a holding release unit that releases the holding of the door panel 12 by the engagement mechanism 17. The release device 18 includes one drive unit 19 and a coupling mechanism 20 that mechanically connects the drive unit 19 and each engagement mechanism 17 (FIG. 1).
[0011]
A door control device 21 installed on each floor is connected to each drive unit 19 via an electrical wiring 22. The door control device 21 is electrically connected to a disaster prevention panel 23 installed on each floor and an elevator control device 24 that controls the operation of the elevator. The disaster prevention panel 23 outputs a detection signal to the door control device 21 by detecting heat or smoke with fire detectors (not shown) installed at a plurality of locations on each floor. The door control device 21 outputs an operation signal in response to an input of a detection signal. An operation signal from the door control device 21 can be transmitted to the drive unit 19 by the electric wiring 22. The drive unit 19 is driven by input of an operation signal. The control unit includes a door control device 21, a disaster prevention panel 23, and an elevator control panel 24.
[0012]
The electrical wiring 22 includes a fixed connection portion 25 fixed to the door rail 5 and a movable connection portion 26 fixed to the door hanger 6 and capable of reciprocating together with the landing door 2 when the landing doorway 1 is opened and closed. The connector part 27 which has is provided. The fixed connection portion 25 and the movable connection portion 26 are connected to each other when the landing door 2 is in a closed state.
[0013]
FIG. 3 is a rear view showing a state in the middle of opening and closing the door 2 of the hall in FIG. As shown in the figure, the fixed connection portion 25 is not reciprocated when the landing doorway 1 is opened and closed, so that it is disconnected from the movable connection portion 26 when the landing door 2 is in the middle of opening and closing and in the open state.
[0014]
4 is a cross-sectional view showing a state in which the door panel 12 of FIG. 2 is displaced toward the landing 13 side. As shown in the figure, the door panel 12 is brought into contact with the three-way frame 3 and the landing sill 10 by displacement toward the landing 13 due to the bias of the spring 16. Thereby, the clearance gap between the door panel 12, the three-way frame 3, and the landing threshold 10 is obstruct | occluded.
[0015]
5 is a cross-sectional view of a main part showing the engagement mechanism 17 of FIG. 2, and FIG. 6 is a cross-sectional view of a main part showing the engagement mechanism 17 of FIG. In the figure, the engagement mechanism 17 has a hook portion 28 fixed to the door panel 12 and an engagement portion 29 attached to the fixing plate 15 and engageable with the hook portion 28. The displacement of the door panel 12 toward the landing 13 is prevented by the engagement between the engaging portion 29 and the hook portion 28. The fixing plate 15 includes a step portion 30 that prevents the spring 16 from being displaced and an insertion hole 31 into which the hook portion 28 is inserted. The step portion 30 and the insertion hole 31 are arranged in the hole portion 32. In a state where the engaging portion 29 and the hook portion 28 are engaged (FIG. 5), the hook portion 28 is supported in contact with the fixing plate 15 in the insertion hole 31.
[0016]
A stepped portion 37 is provided at the lower portion of the hook portion 28. Thus, when the engagement between the engaging portion 29 and the hook portion 28 is released and the door panel 12 is displaced toward the landing 13, the door panel 12 is also displaced downward by its own weight.
[0017]
Here, the insertion direction length C of the contact portion between the lower portion of the hook portion 28 and the insertion hole 31 is set to be smaller than the gap length A between the door panel 12 and the three-way frame 3. The height direction cut length D of the stepped portion 37 is set to be larger than the gap length B between the door panel 12 and the landing threshold 10. Note that the gap length A and the gap length B are each required to be set to 6 mm or less.
[0018]
7 is a main part rear view showing the engagement mechanism 17 and the coupling mechanism 20 of FIG. 1, and FIG. 8 is a diagram of the engagement mechanism 17 with the engagement between the engagement part 29 and the hook part 28 of FIG. FIG. 6 is a main part rear view showing a state of the coupling mechanism 20. In the figure, the connecting mechanism 20 includes an operating lever portion 33 that is rotatably attached to each fixing plate 15 and a connecting rod 34 that connects the operating lever portions 33 to each other. Each actuating lever portion 33 is rotated in conjunction with the reciprocating movement of the connecting rod 34. A stopper portion 35 that is in contact with the operation lever portion 33 by rotation of the operation lever portion 33 is fixed to the fixed plate 15.
[0019]
The engaging portion 29 is a helical spring-like elastic member, and is attached to the shaft portion 36 fixed to the fixing plate 15. One end portion 29 a of the engaging portion 29 is bent perpendicularly to the fixed plate 15 and is in contact with the operating lever portion 33. The other end portion 29 b of the engaging portion 29 is fixed to the fixing plate 15. The hook portion 28 can be engaged with a portion of the engaging portion 29 closer to the shaft portion 36 than the one end portion 29a.
[0020]
The engaging portion 29 engages with the hook portion 28 to prevent the door panel 12 from being displaced toward the landing 13 (FIG. 7), and the engagement portion 29 releases the engagement with the hook portion 28. It can be displaced from the position (FIG. 8). The engaging part 29 is displaced by the rotation of the operating lever part 33 by the drive of the drive part 19 (FIG. 1). That is, the drive unit 19 and each engagement unit 29 are mechanically connected by the coupling mechanism 20.
[0021]
Next, the operation will be described.
Normally, the door panel 12 is held on the door base 11 by the engagement of the hook portion 28 and the engaging portion 29. That is, the engaging part 29 is in the engaging position. When the landing doorway 1 is opened and closed, the door panel 12 is reciprocated together with the door base 11 while maintaining a gap between the three-way frame 3 and the landing threshold 10.
[0022]
When a fire occurs, the door control device 21 outputs an operation signal to the drive unit 19 by inputting a detection signal from the disaster prevention panel 23. The operation signal is input to the drive unit 19 via the electric wiring 22 when the hall entrance 1 is closed. The drive unit 19 is driven by the input of the operation signal to the drive unit 19, and the operation lever unit 33 connected to the connecting rod 34 is rotated. By the rotation of the operation lever portion 33, the engagement portion 29 is displaced from the engagement position to the engagement release position, and the engagement between the engagement portion 29 and the hook portion 28 is released.
[0023]
When the engagement between the engagement portion 29 and the hook portion 28 is released, the door panel 12 is displaced toward the landing 13 by the bias of the spring 16. At this time, the door panel 12 is also displaced downward by its own weight. Thereafter, the door panel 12 is brought into contact with the three-way frame 3 and the landing threshold 10, and the gap between the landing door 2 and the three-way frame 3 and the landing threshold 10 is closed.
[0024]
When the door panel 12 returns after the operation, the operator pushes up the door panel 12 from the landing 13 side to the hoistway 4 side, and the hook portion 28 and the engagement portion 29 are engaged by the return operation of the release device 18.
[0025]
The landing door 2 of the elevator landing door device configured as described above has a door panel 12 that can be displaced toward the landing 13 with respect to the door base 11, and the door panel 12 is displaced to the periphery of the landing doorway 1 by the displacement of the door panel 12. Since the gap between the landing door 2 and the peripheral edge of the landing doorway 1 is closed by being in contact with the portion, the three-way frame 3 can be installed inexpensively and easily. Also, in the past, there was a gap between the fire door and the floor of the landing even when the fire door was deployed in the event of a fire, but there was a gap between the door 2 of the hall and the peripheral edge of the hall entrance 1 at the time of the fire. The gap can be easily closed, and the effects of fire prevention and smoke prevention can be improved. Furthermore, since it is not necessary to perform special processing on the three-way frame 3, it is possible to prevent a decrease in designability.
[0026]
Further, the engagement mechanism 17 engages the hook portion 28 with a hook portion 28 provided on the door panel 12, an engagement position that engages with the hook portion 28 and prevents the door panel 12 from being displaced toward the landing 13 side. Since it has the engaging part 29 which can displace between the engagement cancellation | release positions which cancel | release, the prevention of the displacement to the landing 13 side of the door panel 12 and the cancellation | release of the displacement prevention of the door panel 12 is simple structure Can be done. In addition, the return after the release of the displacement prevention of the door panel 12 can be easily performed because the door panel 12 only needs to be pushed up from the landing 13 side to the hoistway 4 side and the hook portion 28 and the engaging portion 29 are engaged. Can do.
[0027]
Further, since the release device 18 is mounted on the door base 11 and has a drive unit 19 that displaces the engaging portion 29, the release door 18 is attached to the landing door 2 in advance and the landing door 2 is moved. It can be installed at the hall entrance 1 and the installation time of the elevator hall door device can be shortened.
[0028]
In addition, since the release device 18 includes a coupling mechanism 20 that mechanically connects one driving unit 19 and a plurality of engaging units 29, a single driving unit 19 is engaged with a plurality of hook units 28. The engagement with the joint portion 29 can be released.
[0029]
In addition, the electrical wiring 22 that connects the door control device 21 and the drive unit 19 to each other is connected when the landing door 2 is in the closed state and is disconnected when the landing door 2 is in the open state. 27 is provided, an operation signal is input to the drive unit 19 when the landing door 2 is in the closed state, and malfunction of displacement of the door panel 12 toward the landing 13 can be reduced. In addition, it is not necessary to hang down the electric cable in order to ensure the electrical connection between the door control device 21 and the drive unit 19, and the electric wiring breaks due to catching or the like due to the reciprocation of the landing door 2. Can be reduced. Furthermore, if a weak current that does not drive the drive unit 19 is allowed to flow from the door control device 21 to the electrical wiring 22, the open / closed state of the hall entrance 1 can be detected based on whether or not the electrical wiring 22 is energized.
[0030]
In the above example, the door base 11 is a rectangular panel, but may be a frame or the like as long as the release device 19 and the engagement mechanism 17 can be attached and supported.
[0031]
In the above example, the connecting rod 34 is used to rotate the operating lever portion 33. However, for example, a string or the like may be used. In this case, the operating lever portion 33 is rotated by the string pulling by the driving portion 19.
[0032]
Further, if a packing made of, for example, a flame retardant resin is provided at the contact portion of the door panel 12 with the three-way frame 3 and the landing sill 10, the airtightness between the door panel 12, the three-way frame 3 and the landing sill 10 is further improved. Can be made.
[0033]
Further, in the above example, the hole portions 32 are provided at the three locations of the upper and lower portions on the door opening direction side and the upper portion on the door closing direction side of each door base 11. It may be provided. In this case, the fixing plate 15, the spring 16, and the engagement mechanism 17 are arranged corresponding to the positions of the holes 32.
[0034]
In the above example, the present invention is applied to the two doors 2 with double doors. For example, the present invention may be applied to one door 2 with one door. In this case, the hole 32, the fixing plate 15, the spring 16, and the engagement mechanism 17 are provided at the four corners of the door base. In addition, when the width or length of the landing door 2 is large, the hole 32, the fixing plate 15, the spring 16, and the engagement mechanism 17 may be provided at the intermediate portion between the corners.
[0035]
【The invention's effect】
As is clear from the above description, the elevator landing door device according to the present invention is mounted on the door base that can reciprocate in the entrance direction of the landing doorway, and is displaced toward the landing side with respect to the door base. The door of the hall is equipped with a door panel that can be moved, and when the door is closed, the door panel is displaced toward the landing side by the biasing means and is brought into contact with the peripheral edge of the landing doorway, and the gap between the landing door and the peripheral edge is closed. Therefore, it can be installed inexpensively and easily without processing the peripheral edge of the hall entrance / exit. Further, the airtightness between the landing door and the peripheral edge of the landing doorway can be easily improved, and the effects of fire prevention and smoke prevention can be improved. Furthermore, it is possible to prevent the designability from being lowered.
[Brief description of the drawings]
FIG. 1 is a rear view showing a landing door device for an elevator according to Embodiment 1 of the present invention, as viewed from a hoistway side.
FIG. 2 is a cross-sectional view of a principal part showing the elevator landing door device of FIG. 1;
3 is a rear view showing a state in the middle of opening and closing of the landing door of FIG. 1. FIG.
4 is a cross-sectional view showing a state in which the door panel of FIG. 2 is displaced to the landing side.
FIG. 5 is a cross-sectional view of the main part showing the engagement mechanism of FIG. 2;
6 is a cross-sectional view of the main part showing the engagement mechanism of FIG. 4;
7 is a main part rear view showing the engagement mechanism and the coupling mechanism of FIG. 1; FIG.
8 is a main part rear view showing a state of the engagement mechanism and the coupling mechanism in which the engagement between the engagement part and the hook part in FIG. 7 is released. FIG.
[Explanation of symbols]
1 landing doorway, 2 landing doors, 3 three-sided frame (peripheral part), 10 landing sill (peripheral part), 11 door base, 12 door panel, 13 landing, 16 spring (biasing means), 17 engagement mechanism (holding means) ), 18 release device (holding release means), 19 drive unit, 20 coupling mechanism, 21 door control device (control unit), 22 electrical wiring, 23 disaster prevention panel (control unit), 24 elevator control panel (control unit), 27 Connector part, 28 hook part, 29 engaging part.

Claims (5)

A door of the hall that has a door base that can reciprocate in the frontage direction of the hall entrance, and a door panel that is mounted on the door base and can be displaced toward the hall with respect to the door base, and opens and closes the hall entrance,
A biasing means provided between the door base and the door panel, for biasing the door panel toward the landing;
A holding means mounted on the landing door and preventing displacement of the door panel to the landing side against the biasing of the biasing means, and a holding of the door panel of the holding means mounted on the landing door. Holding release means for releasing
The holding means includes a hook portion provided on the door panel, an engagement position provided on the door base and engaged with the hook portion to prevent displacement of the door panel toward the landing side, and the hook portion. An engagement portion that is displaceable between an engagement release position for releasing the engagement of
A step portion is provided at the bottom of the hook portion,
When holding of the door panel by the holding means is released by the holding releasing means when the door is closed, the door panel is moved to the landing side and downward by the biasing means while the hook portion avoids the door base by the stepped portion . A landing door device for an elevator, wherein the landing door device is displaced and is brought into contact with a peripheral edge of the landing doorway to close a gap between the landing door and the peripheral edge. The elevator landing door device according to claim 1 , wherein the holding release unit includes a drive unit that is mounted on the door base and displaces the engagement unit. The door panel is provided with a plurality of hook portions spaced from each other, and the door base is provided with a plurality of engaging portions corresponding to the hook portions. The elevator landing door device according to claim 2 , further comprising a coupling mechanism that mechanically connects the one driving unit and the plurality of engaging units. The holding release means is configured to release the holding of the door panel by the holding means by input of an operation signal from a control unit connected via an electrical wiring,
To the electrical wiring, door of the landing is connected when in a closed state, according to claim 1 or claims, characterized in that the connector portion is disconnected when the door of the landing is open is provided The elevator hall door device according to any one of Items 3 to 4. A door of the hall that has a door base that can reciprocate in the frontage direction of the hall entrance, and a door panel that is mounted on the door base and can be displaced toward the hall with respect to the door base, and opens and closes the hall entrance,
A biasing means provided between the door base and the door panel, for biasing the door panel toward the landing;
A holding means mounted on the landing door for preventing displacement of the door panel to the landing side against the biasing of the biasing means; and
Holding release means mounted on the landing door and releasing the holding of the door panel of the holding means.
When the door is closed by the holding release means when the door is closed, the door panel is displaced to the landing side by the urging means and is brought into contact with the peripheral edge of the landing doorway. The gap between the landing door and the peripheral edge is closed,
The holding release means is configured to release the holding of the door panel by the holding means by input of an operation signal from a control unit connected via an electrical wiring,
To the electrical wiring, door of the landing is connected when in the closed state, the landing characteristics and to Rue elevators that connector portion is disconnected when the door of the landing is open is provided Door device.

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