JP2005067764A - Smoke shutoff device of elevator hall door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a smoke shutoff device for an elevator hall door of simple structure in terms of economy and mechanism, including a smoke shutoff mechanism to shut off the smokes leaking at the gaps between a hall three-side frame and the hall door at the time of occurrence of a fire. <P>SOLUTION: The smoke shutoff mechanism of the smoke shutoff device for the elevator is to shut off the smokes leaking at the gaps between the hall three-side frame 1 and the hall door 10, wherein the arrangement includes a mechanical locking mechanism operated by the first prime mover to open and close a car door and the hall door and engaging fast the hall door in its closed position with a stationary member of the building and a smoke shutoff operation mechanism not operating from the hall door being in the closed position to immediately before closing and operating in the short distance from immediately before closing to the door full close position so as to block the gaps. The smoke shutoff operation mechanism is composed of a door hanger case for the hall door, the second prime mover 111 installed on a door hanger and the hall door, power transmitting mechanisms 76, 77, 78, etc. to transmit the motive force of this prime mover, and smoke shutoff flexible pieces 41, 51, 61 actuated through the power transmitting mechanisms. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a smoke shielding device for an elevator hall door.

  Generally, in elevator hall door devices, there is a slight gap (about 3 to 6 mm) between the door panel that is a movable part and the three-way frame and the sill that are fixed parts in order to open and close the door smoothly. is necessary. For example, smoke, flame, or toxic gas generated in a building fire or the like may enter the elevator hoistway through the gap and damage may be spread to other floors. In order to cope with this, conventionally, as an elevator landing door device that maintains smoke shielding performance, measures such as blocking or sealing the gap by an electromagnetic / mechanical mechanism in the event of smoke or fire (for example, Patent Documents 1 to 3).

JP-A-6-72681 JP-A-8-67486 Japanese Patent Laid-Open No. 9-20487

  The conventional smoke shielding device for an elevator hall door has problems such as the complexity of the mechanism, the low frequency of operation only at the time of a fire, or economy, and has not been an appropriate solution. For example, there is a method described in Patent Document 3 as a method of shielding the upper edge portion of the door and the sill portion of the lower edge of the door by pushing down the entire door, inclining the landing door downward in the door closing direction, and door hanger plate By moving downward in parallel along the rail attached to the door, the door is pressed against the sill, reducing the gap between the door lower edge and the sill upper surface at the door closing position. Measures against smoke shielding due to the decrease in the amount of air are difficult due to problems in the door structure and errors in installation at the site. Moreover, since the thing of patent document 2 which attaches a packing material to a door lower edge part will slide over the long distance of a door closing process, it is the door closing for the frictional resistance force. There is a possibility that the driving force is insufficient, the operation becomes unstable, and in the worst case, it may lead to a serious failure that the landing door cannot be closed.

The present invention has been made to solve the above-described problems. The first object of the present invention is to block smoke that leaks from the gap between the landing three-way frame and the landing door when a fire occurs in a building or the like. It is an object of the present invention to provide a smoke shielding device for an elevator hall door in which a smoke mechanism can be obtained with a simple structure economically and mechanically.
The second object is to provide a smoke shielding device for an elevator hall door provided with a smoke shielding mechanism that operates only at the door closing position immediately before the door is closed. .

  A smoke shielding device for an elevator hall door according to the present invention is configured to block smoke leaking from a gap between the hall three-way frame and the hall door, and is configured to open and close the cab door and the hall door. The mechanical locking mechanism that is operated by the prime mover and engages and fixes the landing door to the building-side fixing member at the door closing position, and does not operate from the door opening position to the door closing position. It operates for a short distance from immediately before closing to the fully closed position of the door, and has a smoke shielding operation mechanism that closes the gap, and the smoke shielding operation mechanism is attached to the door hanger case, door hanger, and landing door of the landing door The second prime mover, the power transmission mechanism that transmits the motive power of the prime mover, and the smoke shielding flexible body that is operated via the power transmission mechanism.

  As described above, the present invention is configured to block smoke leaking from the gap between the landing three-way frame and the landing door, and is operated by the first prime mover that opens and closes the cab door and the landing door. And a mechanical locking mechanism that engages and fixes the landing door to the building-side fixing member at the door closing position, and does not operate from the door opening position to the door closing position. A smoke-insulating operation mechanism that operates for a short distance to the fully closed position and closes the gap, and the smoke-insulating operation mechanism includes a door hanger case for the landing door, a door hanger, and a second door attached to the landing door. It is composed of a motor, a power transmission mechanism that transmits the motive power of this motor, and a smoke shielding flexible body that is actuated through this power transmission mechanism. A small gap in a high elevator hall door The Saegikemuri can be realized.

Embodiment 1 FIG.
1 is a front view showing an elevator landing apparatus according to Embodiment 1 of the present invention, FIG. 2 is a side view showing the elevator landing apparatus according to Embodiment 1 of the present invention, and FIG. 3 is a modification of the main part of FIG. 4 is a front view showing an example of the vertical operation mechanism of the smoke shielding device, FIG. 7 is a front view showing the upper edge smoke shielding mechanism of the door, and FIG. 8 is a side view thereof. FIG. 9 is an enlarged view of a main part thereof, FIG. 10 and FIG. 11 are side views showing a smoke shielding mechanism at the lower edge of the door, FIG. 12 is a partial plan view showing a smoke shielding mechanism at the side edge of the door, and FIG. FIG. 14 is a front view showing the door closer mechanism of the door, and FIG. 15 is a front view showing the main part of the door closer mechanism.

1 to 3, the elevator hall device includes a hall door 10 that covers the hall opening so as to be freely opened and closed in the left-right direction, and a hall three-way frame 1 that constitutes the elevator hall. A gap of about 3 to 6 mm is formed between the landing door 10 which is a movable part and the landing three-way frame 1 which is a fixed part in order to smoothly open and close the landing door. The landing three-sided frame 1 is composed of a three-sided frame mounting plate 2, a three-sided frame upper beam 3, and a three-sided frame side column 4, and is attached to the building side. A landing sill 6 is attached to the building side, and a sill groove 6 a into which a bar-shaped door shoe 16 provided on the lower edge 15 of the landing door 10 is fitted is provided. The door contact side edge 13 which is the center part of the two left and right landing doors 10 is abutted through a door contact cushion material or the like when the door is closed, and smoke is shielded. The door hanger case 21 is attached to the building side so as to be in a predetermined relative position with respect to the landing three-way frame 1 and the sill 6. The door hanger 22 that suspends the left and right landing doors 10 is provided with a hanger roller 23 and a pinching roller 24, and rides on the door rail 8 fixed to the door hanger case 21 and travels in the left-right direction. . The left and right landing doors 10 are opened and closed in synchronization with each other by connecting brackets 34 and 35 connected and fixed to an interlocking rope 31 that wraps around a pulley (not shown) fixed to the door hanger case 21 and circulates. . One of the landing doors 10 is provided with a connecting device (not shown) for connecting with the elevator cab door, and the landing door 10 is opened and closed by the first driving force of the cab door opening and closing device. It has become.
Since the smoke-preventing mechanism of the elevator hall door needs to be operated only when the door is closed, at least the landing door moved to the door-closed position by the door opening / closing motor of the first motive power, here, the cab. The smoke shielding operation mechanism is simplified by engaging one piece with the building side fixing structure to be in a fixed state.

  As a mechanism for engaging with the building-side fixing structure and setting it in a fixed state, it travels in the left-right direction along the door hanger case 21 fixed to the building side and the fixed door rail 8 on the door hanger case. Using the door hanger 22, the hook 125 attached to the door hanger case 21 and the claw of the latch 122 attached to the left door hanger 22 are hooked and engaged at the door closing position of the landing door 10. Further, the latch holding spring 124 presses the claw side of the latch 122 so that the engagement with the hook 125 is not released. The latch 122 includes a latch fulcrum pin 121 and a latch release lever 123. Since the left door hanger 22 is connected to the right door hanger 22 without loosening by the interlocking rope 31 that is crimped by the suspension plates of the connecting fittings 34 and 35, the right door hanger 22 is also engaged and fixed to the building side. It is in the state that was done. In this embodiment, a smoke shielding mechanism, that is, an upper edge smoke shielding flexible plate 41 and a lower edge smoke shielding flexible plate 51 are connected to the tip of the lever 71 mounted on the left and right door hangers 22. It is to be operated. One elliptical cam 115 fixed to the door hanger case 21 arranged using the central gap between the left and right door hangers 22 is rotated 90 degrees by the operating motor 111 which is the second driving force, and according to the roller 74 The space between the levers 71 is expanded to operate the lever 71 and the smoke shielding mechanisms 41 and 51 at the tip thereof. At this time, the latch 122 and the hook 125 are engaged with each other, and it becomes a necessary condition that the lever 71 has an operating force point. If this is not engaged, the left and right door hangers 22 are spread by the elliptical cam 115, and the lever 71 does not operate effectively. The lever 71 has fulcrum pins 72 and 73, and the upper end portion of the rod 76 is connected thereto.

  In an actual elevator door closing mechanism, a locking device is provided to prevent a passenger from pulling the door from the landing floor even after the landing door 10 is closed by the door closing driving device on the cab side. It is. In this embodiment, it is anticipated that this locking device can be easily realized only by modification in mechanical strength so as to be suitable for the operation of the smoke shielding operation mechanism. In FIG. 3, the hook 125 is directly attached to the right door hanger 22 instead of the door hanger case 21. Here, the left and right door hangers 22 are directly engaged by engagement of the latch 122 and the hook 125, and are not directly engaged and fixed to the building-side structure, but the same effect as described above can be obtained. . In this case, since the interlocking rope 31 is not interposed, troubles such as rope loosening can be eliminated.

  A door rail 8 located on the back side of the door hanger 22 and a cam 85 located on the front side of the door hanger 22 are fixed to the door hanger case 21. In the door open state of the landing door, the lever 71 is supported by the fulcrum pin 72 and pulled in the direction in which the rod 76 is pulled up by the pulling spring 75. However, the lever 71 is regulated by the stopper 80 and is indicated by a two-dot chain line in FIG. Is held in. That is, the rod 76 is in the raised position. When the door hanger 22 advances to the center along the door rail 8 and immediately before the door is closed, the roller 74 hits the cam 85, the lever 71 is raised, and the rod 76 is pushed down. The required vertical stroke of the rod 76 and the horizontal stroke from the start of contact of the roller 74 and cam 85 of the door hanger 22 to the door closing position depend on the shape of the lever 71 and the design of the fulcrum pins 72 and 73 and the roller 74. It is determined.

The link mechanism of the vertical operation of the upper edge smoke-shielding flexible plate 41 and the lower edge smoke-shielding flexible plate 51 by the vertical stroke of the rod 76 will be described. The rod 76 is connected to a link 78 swinging around a fulcrum 79 at the center of the door width on the rear surface of the landing door 10, and the rod 77 connected to the other part of the link 78 is both upward and downward. Move up and down. The link 78 has a link fulcrum pin 79. Each of the rods 76 and 77 and the link 78 is provided with a mechanism for finely adjusting the length (not shown), and each of the upper edge smoke shielding flexible plate 41 and the lower edge smoke shielding flexible plate 51 is provided. It has a mechanism that can adjust the appropriate contact between the contact plates 44 and 45.
In this way, the horizontal movement of the door hanger is used as a power source, and the rods 76 and 77 are moved only with a short horizontal stroke reaching the vicinity of the door closing completion of the landing door 10 without using a new separate power source. A simple operation mechanism that pushes down realizes the desired smoke-insulating mechanism at the lower edge of the door and the upper edge of the door.
FIG. 5 shows a compact lever and cam rod operating mechanism. In this case, not the tension spring 75 but the push spring 75.
It should be noted that all of the normal door closing devices are provided with a mechanical locking mechanism (also provided with an electrical contact) provided between the door hanger case 21 and the door hanger 22 when the landing door 10 is completely closed. ), The door hanger 22 is fixed so as not to open, so that once the door is closed, the door hanger 22 is held as it is, so that the smoke shielding is not broken.

Next, a rod operation mechanism that reduces the horizontal stroke will be described.
In FIG. 6, push rods 81 and 81 ′ are provided in place of the cam 85. As shown in the figure, the push rod 81 is attached to the right door hanger 22, and abuts against the roller 74 of the left door hanger 22 at its tip. The push rod 81 ′ attached to the left door hanger 22 is provided so as to pass through the push rod 81, and pushes the roller 74 of the right door hanger 22 at its tip. Since the left and right door hangers 22 simultaneously move toward the center, the horizontal stroke per one door hanger 22 with respect to the up / down operation stroke of the same rods 76 and 77 is equal to that of the fixed cam 85 fixed to the door hanger case 21. Compared to the case, it is only necessary to halve, and the drag sliding can be further shortened.
Instead of the above-described cam 85 or push rods 81 and 81 ', an actuator having an independent power source such as an electromagnetic solenoid is installed at the position of the cam 85, and the rollers 74 are pushed to operate the rods 76 and 77. Is also possible. In this case, power is supplied to the electromagnetic solenoid or the like at any time after the door is completely closed (for example, immediately after the door is closed or when a fire / smoke detector activation signal is received). The smoke mechanism can be activated.

Next, a case where the gap between the lower edge 15 of the landing door 10 and the sill 6 is further reduced by the inclined door rail 8 will be described.
By attaching the door rail 8 so as to be inclined slightly downward toward the central closed position, the door itself is pushed downward as the landing door 10 moves to the central closed position. In the door-closed position, the mounting position / inclination angle of the door rail 8 is adjusted with respect to the travel of the door so that the gap between the threshold 6 and the lower edge 15 of the landing door 10 is almost zero. Determine. At this time, the hanger roller 23 is set near the door center and the door door bag, and is set with a height difference parallel to the inclined door rail 8, so that the upper edge of the door and the lower edge of the door are kept horizontal. Move up and down to close the gap. In this door opening and closing process, the lower edge 15 of the landing door 10 does not contact the sill 6. In addition, an inclination of about 1 mm or a gap with the sill 6 due to manufacturing / installation errors may remain.
This makes it possible to reduce the desired stroke value of the rod 76 required to press the upper edge smoke shielding flexible plate 41 and the lower edge smoke shielding flexible plate 51 against the other side in order to block the smoke. Since the entire mechanism including the mechanism lever, cam or push rod can be miniaturized, there are significant industrial advantages such as installation space and cost.

Next, smoke shielding of the upper edge portion 12 of the landing door 10 will be described with reference to FIGS.
The upper edge smoke-shielding flexible plate 41 has a composite structure comprising a heat-resistant thin plate spring portion 43 at the mounting side base portion and a contact piece portion 44 having rigidity at the tip tongue portion on the contact side. Then, the spring portion 43 of the attachment base is attached in the direction in which a recess is formed on the landing side near the upper edge portion 12 of the landing door 10, and the contact piece portion 44 of the tip tongue portion is provided on the upper edge 3 of the landing three-way frame. It is pressed against the three-side frame side smoke shield plate 45 by the spring pressure of the heat-resistant thin leaf spring portion 43. The upper edge smoke-shielding flexible plate 41 is provided over the entire width of the upper edge portion 12 of the door 10 and has a length of about 400 to 700 mm. The contact piece 44 is rigid in the longitudinal direction at the front end tongue portion, and maintains straightness in the contact line, and is placed along the other side three-side frame side smoke shield plate 45. In this case, an elastic material that compensates for the straightness error may be separately provided in the vicinity of the contact line.
By operating the rod 76, the contact piece 44 is operated through the rod 77 and the link 78, the contact piece 44 is pulled down at the door opening position, and the contact piece 44 is pushed up at the door closing position to close the gap. , Smoke shall be shielded. At this time, since the upper edge smoke shielding flexible plate 41 is attached in a direction in which a recess is formed on the landing side, a fire or the like occurs on the landing side, and the hot air pressure on the landing side is higher than that on the hoistway side. When it becomes higher, pressure is generated inside the recess of the heat-resistant thin leaf spring portion 43, and the contact piece portion 44 is pressed more strongly against the three-side frame side smoke shielding plate 45, and the smoke shielding effect becomes more reliable. There are benefits.

Next, smoke shielding between the lower edge 15 of the landing door 10 and the sill will be described with reference to FIGS. 10 and 11.
The lower edge smoke-shielding flexible plate 51 has a composite structure composed of a heat-resistant thin plate spring portion 53 at the attachment side base portion and a contact piece portion 54 with rigidity at the tip tongue portion on the contact side. The space formed by the partition plate 52 is provided in the lower edge portion 15 of the door while keeping the surface of the landing door 10, and the spring portion of the attachment base portion of the lower edge smoke shielding flexible plate 51 is provided in the partition plate 52. 53 is attached in the direction in which the recess is formed on the landing side, and the contact piece 54 of the tip tongue is pressed against the upper surface of the sill 6 by the spring pressure of the heat-resistant thin leaf spring 53. The lower edge smoke-shielding flexible plate 51 is provided over the entire width of the lower edge portion 15 of the door 10 and has a length of about 400 to 700 mm. The contact piece 54 has a rigid front end tongue in the longitudinal direction and maintains straightness in the contact line, and is along the upper surface of the mating sill 6. In this case, an elastic material that compensates for the straightness error may be separately provided in the vicinity of the contact line.
The contact piece 54 is operated through the rod 77 and the link 78 by the operating mechanism of the rod 76, the contact piece 54 is pulled up at the door opening position, and the contact piece 54 is pushed down at the door closing position to close the gap. , Smoke shall be shielded. At this time, since the lower edge smoke shielding flexible plate 51 is attached in a direction in which a recess is formed on the landing side, a fire or the like occurs on the landing side, and the hot air pressure on the landing side is higher than that on the hoistway side. When the height increases, pressure is generated inside the recess of the heat-resistant thin leaf spring portion 53, and the contact piece portion 54 is pressed more strongly against the upper surface of the sill 6, and there is a merit that the smoke shielding effect becomes more reliable. .

Next, smoke shielding between the side edge 11 of the landing door 10 and the three-sided frame side column 4 will be described with reference to FIGS. 12 and 13.
The side-edge smoke-shielding flexible plate 61 includes a heat-resistant side-edge smoke-shielding spring plate 63 serving as an attachment-side base portion thereof, a belt-like magnetic rubber plate serving as a contact piece portion attached to a tip tongue portion of the spring plate, and the like. It is comprised from the magnetic material 64 which consists of, and the attachment board 65 which consists of a nonmagnetic material. The side edge smoke-shielding flexible plate 61 has a spring plate 63 of the attachment base attached to the door pocket side edge 11 of the door and is opposed to the outer edge of the three-side frame side column 4. At the door closing position of the door, the magnetic material 64 serving as the contact piece is in close contact with the outer edge of the three-side frame side column 4 to block smoke. The length of this part corresponds to the height dimension of the door, which is about 2000 to 2300 mm, so it is combined with three-sided frame and door processing errors and building errors. Consideration to increase certainty is necessary. In this embodiment, a heat-resistant thin spring plate 63 is used on the attachment side to the door, and a strip-shaped magnetic material 64 magnetized to an appropriate strength is combined on the smoke-shielding contact side to make a steel plate. The adhesion to the outer edge of the three-side frame side column 4 is increased. In addition, in order to reduce the stress to the spring plate 63 made of a thin leaf spring material at the time of peeling to open the door, the attachment plate 65 made of a nonmagnetic material is arranged along the spring plate 63. Since the side edge smoke-shielding flexible plate 61 is long, it is desirable to divide it into an appropriate length, for example, about 400 to 500 mm, and to manufacture and attach it. This is effective as a measure for dealing with the above-mentioned three-sided frame and door processing, as well as poor adhesion due to errors in installation, in addition to the manufacturing and handling advantages.
When the door is closed, the side edge smoke-proof flexible plate 61 is attached in a direction in which a recess is formed on the landing side, so that a fire or the like occurs on the landing side, and the hot air pressure on the landing side is When it becomes higher than the hoistway side, pressure is generated inside the recess of the heat-resistant thin leaf spring portion 63, and the magnetic material contact piece 64 is pressed more strongly against the outer edge portion of the three-side frame side column 4, thereby blocking the shielding. There is an advantage that the smoke effect is more certain.

Next, the door closer mechanism of the landing door 10 will be described with reference to FIGS. 14 and 15.
A door closer rope 32 having one end connected to the interlocking rope 31 is connected to a door closer weight 36 suspended from the other end. The door closer weight 36 is usually about several kg. When the landing door 10 is closed, the door closer mechanism is closed so that the door locking hook is released due to airflow in the hoistway or artificial vibration to the door, and the landing door 10 does not open. This is one of the safety mechanisms that are always pulled in the direction and has been used in the past.
In addition, the smoke shielding operation mechanism has the upper edge smoke shielding flexible plate 41 via the lever 71, the rod 76 and the like by the cam 85 and the push rods 81 and 81 ′ at the position immediately before the landing door 10 is closed. The lower edge smoke-shielding flexible plate 51 and the side edge smoke-shielding flexible plate 61, which had been pulled up by the spring 75 until then, are released at once but moved to the pressing state with a small stroke. is there. The stroke force of the door opening / closing operation comes from the motor output which is a door closing machine on the cab side. However, when the stroke force immediately before the door closing is insufficient, the door closer mechanism causes the landing door 10 to The closing force immediately before closing the door can be increased. The fixed-side magnetic body or magnet 38 is installed and fixed on the building side, and is opposed to the magnet 37 attached to the lower end of the door closer weight 36 with a gap G at the door closing position with a gap G between the non-magnetic thin plates. Yes. Since the attractive force acting between these opposing magnets or between the magnet and the magnetic material becomes stronger in inverse proportion to the gap G, adding this door closer mechanism is from the horizontal stroke area immediately before the door hanger fully closed to the fully closed position. It has the optimum characteristics to ensure that the smoke shielding is completely closed against the load of the rapid lever operating force.

Embodiment 2. FIG.
Next, another example of the vertical mechanism of the smoke shielding device for the landing door will be described with reference to FIG.
In the elevator landing door opening and closing device, there are a hanger roller 23 and a door hanger 22 that roll on the door rail 8 attached to the door hanger case 21 in the left-right direction, and the door hanger 22 has a fulcrum pin 72 as an axis. A lever 71 and a roller 74 are provided so as to operate. On the other hand, in place of the fixed cam 85, the door hanger case 21 is provided with an elliptical cam 115 rotatable around the cam rotation shaft 114 and a worm wheel 113 integral with the elliptical cam 115. Is further provided with a worm shaft 112 for driving the motor and an operating motor 111. Thereby, opening / closing of the landing door 10 and driving of the elliptical cam 115 by the operating motor 111 can be performed completely independently. When the long axis of the elliptical cam 115 is in the vertical direction (indicated by a two-dot chain line in FIG. 16), the door hanger 22, the lever 71, and the roller 74 are not in contact with the elliptical cam 115 when the door is closed. Since the short diameter portion of the elliptical cam 115 is set, the lever 71 reaches the door closing position while being regulated by the pulling spring 75 and the stopper 80, and the rod 76 for operating the smoke shielding mechanism is pulled up. Remains. That is, no smoke shielding is performed. When the major axis of the elliptical cam 115 is in the horizontal direction (shown by the solid line in FIG. 16), the door hanger 22, the lever 71, and the roller 74 are the major axis of the elliptical cam 115 from the time when the door is being closed. The lever 71 rotates around the fulcrum pin 72 until the door is completely closed while starting to contact the end, and the roller 74 is used as an application point, so that the rod 76 is pushed down and smoke shielding is performed.
Further, when the long axis of the elliptical cam 115 is in the vertical direction and the door is in a completely closed state, smoke shielding is not performed, but at this time, the operating motor 111, the worm shaft 112, the worm wheel 113, when the elliptical cam 115 is rotated in the horizontal direction, the left and right doors are attracted and fixed to each other by a door-locking device (not shown). The lever 71 is pushed open, and the rod 76 is pushed down to block smoke.

Embodiment 3 FIG.
Further, another example in which the vertical mechanism of the smoke shielding device of the landing door 10 is different will be described with reference to FIG.
Instead of the elliptical cam 115 and its rotation operating mechanism, a set of the pantograph 105 and its opening / closing drive mechanism 101 are added. Since the horizontal position (door opening position) of the pantograph 105 and the vertical position (door closing position) of the pantograph 105 correspond to the major axis and minor axis of the above-described elliptic cam 115, detailed description of the operation is omitted.
The operating screw 102 has a screw flange 103 in the center, and the operating motor 101 is supported by a flange presser 104 fixed to the door hanger case 21 to hold the center position of the pantograph 105. Since the operating screw 102 is cut into a reverse thread on the top and bottom of the screw flange 103, the pantanuts 106 and 107 are moved back and forth symmetrically with respect to the screw flange 103. In the pantograph system, fine adjustment of the open position and the closed position is easy, and the operation is stable because a force is applied to the roller 74 and the lever 71 in a substantially horizontal direction throughout the entire process of opening and closing the pantograph. There is a merit that it is certain.
In addition, all the usual door closing devices are provided with a mechanical locking device (also provided with an electrical contact) provided between the door hanger case 21 and the door hanger 22 when the landing door 10 is completely in the closed position. ), The door hanger 22 is fixed so as not to open, so that once the door is closed, the door hanger 22 is held as it is, so that the smoke shielding is not broken. On the other hand, the operation mechanism is a worm screw, a rotation mechanism by meshing of gears, and an expansion mechanism by meshing of screws and nuts. Even when the power supply is interrupted, the current position is maintained, so that the smoke shielding mechanism is not opened.

Embodiment 4 FIG.
Next, a control device for the smoke shielding mechanism of the landing door 10 will be described with reference to FIG.
In the smoke shielding mechanism control panel 90, a signal detected by the smoke / fire detector 91 installed on the building side is received through the alarm device 92 and temporarily held in the storage circuit 93. On the other hand, the door closing detection circuit (in conjunction with the mechanical locking mechanism) 95 which is a part of the door opening / closing control circuit 94 which is a part of the elevator operation control device confirms that the door is closed and detects the door closing. After the signal and the smoke / fire detection signal are matched by the AND condition circuit 96, the smoke shielding driving circuit power source 97 drives the smoke shielding operation motor, and the flexible smoke shielding piece is driven via the smoke shielding operation link. To prevent smoke. For example, when an elevator cab is placed on the floor where smoke / fire detection is reported and the door is open and in the state of being treated as a customer, the smoke shielding mechanism is suddenly activated for the following reasons. Therefore, after the regular or normal elevator operation and passenger handling are finished, it is reasonable to operate the smoke after the landing door is closed.
The reason for this is that there is an advantage that no load is applied to the door closing device until the landing door reaches the door closing position. There is no point in operating the smoke shield when the landing door is open. In addition, if the landing door is opened and the smoke-blocking mechanism is activated before the landing door is closed, it will be in contact with the smoke-shielding piece at the upper and lower sills of the landing door. Therefore, it is possible to avoid a risk that a dragging failure occurs and the door closing operation of the landing door is astringent and incompletely closes.

According to this invention, from the door opening position of the landing door to the region immediately before the door closing, the flexible smoke shielding pieces 41, 51, 61 are only opposed to each other with a gap on the three-sided frame edge surface. There are no sliding noises or wear marks.
Only in the vicinity immediately before the door is fully closed (about 10 mm), only the pressing force of the smoke shielding piece is required.
In order to operate the smoke shielding mechanism, the horizontal movement of the door hanger is used as a power source, so an independent driving power source / mechanism is not required, and the structure is simple, and the manufacturing cost and the maintenance cost are great.
The smoke shielding function is ensured even when the door is always closed.
Therefore, there is no need for smoke detectors / fire detectors, alarm signal transmitters / receivers, wiring, etc., and there are significant advantages in manufacturing costs, installation costs, and maintenance costs.
Since it is only necessary to add and improve parts such as a door hanger part and a flexible smoke-shielding piece, a smoke-shielding function can be imparted to an already delivered elevator.
As a result, it is compact, simple in structure, reliable and stable, and it can realize smoke shielding of minute gaps in elevator hall doors, thereby suppressing the fire spread rate due to building fire as much as possible and reducing damage such as human sacrifice due to smoke Can be made.

It is a front view which shows the smoke shielding apparatus of the elevator hall door in Embodiment 1 of this invention. It is a side view which shows the smoke shielding apparatus of the elevator hall door in Embodiment 1 of this invention. It is a partial front view which shows the modification of the smoke shielding apparatus of the elevator hall door in Embodiment 1 of this invention. It is a front view which shows an example of the up-and-down operation mechanism of the smoke-shielding device of an elevator hall door. It is a front view which shows the other example of the up-and-down operation mechanism of the smoke-shielding apparatus of an elevator hall door. It is a front view which shows the further another example of the up-down operation mechanism of the smoke-shielding apparatus of an elevator hall door. It is a front view which shows the upper edge part smoke shielding mechanism of a landing door. FIG. 8 is a side view of FIG. 7. It is a principal part enlarged view of FIG. It is a side view which shows the lower edge part smoke shielding mechanism of a landing door. It is a side view which shows the lower edge part smoke shielding mechanism of a landing door. It is a partial top view which shows the side edge part smoke-shielding mechanism of a landing door. It is a principal part enlarged view of FIG. It is a front view which shows the door closer mechanism of a landing door. It is a front view which shows the principal part of a door closer mechanism. It is a front view which shows the up-and-down mechanism of the smoke shielding apparatus of the elevator hall door in Embodiment 2 of this invention. It is a front view which shows the up-and-down mechanism of the smoke shielding apparatus of the elevator hall door in Embodiment 3 of this invention. It is a block diagram which shows the control apparatus of the smoke shielding mechanism of the elevator hall door in Embodiment 4 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Boarding three-way frame 2 Three-way frame mounting plate 3 Three-sided frame upper beam 4 Three-sided frame side pillar 6 Sill 8 Door rail 10 Platform door 11 Door side edge 12 Door upper edge 15 Door lower edge 16 Door shoe 21 Door hanger case 22 Door hanger 23 Hanger roller 24 Clamping roller 31 Interlocking rope 32 Closer rope 34, 35 Connecting bracket 36 Closer rope 41, 51, 61 Smoke-proof flexible plate 43, 53, 63 Spring plate 44, 54, 64 Contact piece
71 Lever 72, 73 Support point pin 74 Roller 75 Pulling spring 76, 77 Rod 78 Link 80 Stopper 81, 81 'Push rod 85 Cam 91 Smoke / fire detector 92 Alarm device 93 Memory circuit
94 Door Open / Close Control Device 95 Door Close Detection Circuit 96 AND Condition Circuit 97 Smoke Shield Drive Circuit Power Supply 101, 111 Actuator Motor 105 Pantograph 112 Worm Shaft 113 Worm Wheel 113 Cam Rotating Shaft 115 Elliptical Cam 121 Latch Support Pin 122 122 Latch 123 Latch Release Lever 124 Latch holding spring 125 Hook

Claims (12)

  In a smoke shielding device for an elevator hall door configured to block smoke leaking from a gap between the hall three-way frame and the hall door in the event of a fire, the first prime mover that opens and closes the car room door and the hall door A mechanical locking mechanism that is operated to engage and fix the landing door to the building-side fixing member at the door closing position, and does not operate from the door opening position of the landing door to immediately before the door closing. A smoke shielding operation mechanism that operates for a short distance from the immediately preceding position to the fully closed position of the door and closes the gap, and the smoke shielding operation mechanism is provided on the door hanger case, the door hanger, and the landing door of the landing door. The smoke-proofing of the elevator hall door characterized by comprising a second prime mover mounted, a power transmission mechanism for transmitting the motive power of the prime mover, and a smoke-shielding flexible body operated via the power transmission mechanism apparatus.   It has a hanger roller and a door hanger that roll on the door rail attached to the door hanger case in the left-right direction, and the door hanger includes a lever and a roller that are provided to rotate around a fulcrum pin. The door hanger case is provided with a fixed cam having a long side set so as to rotate the lever in contact with the roller, and the lever and roller of the door hanger are provided when the landing door comes immediately before the door is closed. The lever is rotated around the fulcrum pin until the door is fully closed using the roller as an application point, and the smoke shielding flexible body is actuated via the rod. The smoke shielding device for an elevator hall door according to claim 1.   The upper edge smoke-proof flexible body and the lower edge smoke-proof flexible body attached to the upper edge portion and the lower edge portion of the landing door respectively have a heat-resistant thin leaf spring portion on the attachment side base, and the tip tongue portion that is the contact side is The smoke shielding device for an elevator hall door according to claim 1 or 2, wherein the structure is a composite structure comprising contact piece portions having rigidity.   The upper edge smoke shield flexible body and the lower edge smoke shield flexible body are each attached in a direction in which a recess is formed on the landing side, and the upper edge smoke shielding flexible body is provided on the beam on the landing three-way frame during operation. The smoke shielding device for an elevator hall door according to claim 3, wherein the smoke shielding body is pressed against the three-side frame side smoke shielding body, and the lower edge smoke shielding flexible body is pressed against the upper surface of the sill.   The side edge smoke-proof flexible body attached to the doorside edge of the landing door is made of a heat-resistant thin leaf spring part on the attachment side base, and a contact piece part and a non-magnetic body made magnetic at the tip tongue part on the contact side. 3. A smoke shielding device for an elevator hall door according to claim 1 or 2, wherein a composite structure is provided with an accessory plate.   The side edge smoke-proof flexible body is attached in a direction in which a recess is formed on the landing side, and the side edge smoke-proof flexible body is pressed against the side edge of the landing three-sided frame side column when the landing door is closed. The smoke shielding device for an elevator hall door according to claim 5.   A landing door with a lever and a roller attached to the door hanger and a fixed cam that protrudes from the left and right door hanger cases so as to abut against each other's roller. 2. The smoke-preventing device for an elevator hall door according to claim 1, wherein the smoke-shielding flexible body is operated up and down through a rod connected to one end of the lever in the vicinity of the door closing completion.   A door rail is attached to the door hanger case so as to incline downward in the door closing direction, and the landing door is moved downward in parallel along the door rail, thereby lowering the lower edge of the landing door and the sill at the door closing position. The smoke shielding device for an elevator hall door according to claim 1, wherein a gap between the upper surface and the upper surface is reduced.   As a door closer mechanism of a landing door opening / closing device, a permanent magnet is attached to the lower end portion of a door closer weight attached to a door closer rope, and this permanent magnet is brought into close contact with a fixed-side magnetic body in a non-contact manner, and its attractive force is applied to the door closer weight. 2. The smoke shielding device for an elevator hall door according to claim 1, wherein the door closing force is increased by adding to the weight force.   It has a hanger roller and a door hanger that roll on the door rail attached to the door hanger case in the left-right direction, and the door hanger includes a lever and a roller that are provided to rotate around a fulcrum pin. The door hanger case is equipped with an elliptical cam. When the minor axis is horizontal and the major axis is vertical, the door hanger, lever and roller do not come into contact with each other even when the door is closed. When the vertical axis is in the horizontal direction and the long axis is in the horizontal direction, the door hanger lever and roller start to come into contact with the long-diameter end of the long axis from when the landing door comes just before the door closes, The lever is rotated around the fulcrum pin until the door is fully closed by the pressing force using the horizontal movement of the door hanger as a power source, and the smoke shielding flexible body is operated via the rod. Saegikemuri device for an elevator hall door of claim 1 wherein symptoms.   It has a hanger roller and a door hanger that roll on the door rail attached to the door hanger case in the left-right direction, and the door hanger includes a lever and a roller that are provided to rotate around a fulcrum pin. The door hanger case is equipped with a pantograph and its opening / closing drive mechanism. When the pantograph and its opening / closing drive mechanism are closed in the vertical direction, the door hanger, lever, and roller do not contact even at the door closed position. When the pantograph is opened horizontally, the door hanger lever and roller start to come into contact with the long-diameter end of the long shaft from the time when the landing door comes immediately before the door is closed, By rotating the lever around the fulcrum pin until the door is fully closed by the pressing force using the horizontal movement of the Saegikemuri device for an elevator hall door of claim 1, wherein the actuating the Saegikemuri flexure via a de.   11. A smoke / fire detector signal installed on the building side is received and temporarily stored, and an elliptic cam or pantograph drive mechanism is activated only when it overlaps with a door closing detection signal. Or the smoke shielding apparatus of the elevator hall door of Claim 11.

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