JP4421948B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus, and more particularly to an elevator apparatus provided with a landing door having a fireproof function.

  Conventionally, the elevator apparatus provided with the landing door which has a fireproof function has already been proposed, for example as disclosed in Patent Document 1. The configuration described in Patent Document 1 is provided with door covers having irregularities at the door stop portions of the double doors, and when the rubber of the door doors burns out, the uneven portions of the door covers are fitted to each other. In order to prevent gaps between the two landing doors.

  Moreover, in patent document 2, the thermal expansion sealing material is provided in the door contact side of a door, and the thermal expansion sealing material is expanded with the heat at the time of a fire, and the gap | interval of the door contact side of an adjacent door is closed.

  Furthermore, in patent document 3, a shielding cover is protruded from the door stop side at the time of a fire, and the clearance gap of the protruded shielding cover is block | closed with a thermal foaming expansion material.

Japanese Patent Laid-Open No. 11-11840

JP 2001-234672 A JP-A-9-273363

  According to the configuration described in Patent Document 1, since the concave and convex portions of the door cover are fitted, there is no gap on the door-contact side of both landing doors, so smoke and flame between the landing side and the hoistway side It is expected that flow-through can be prevented. However, the fitting of the concavo-convex portion of the door cover is based on the premise that the door stop rubber provided at the entire height of the landing door is burnt out at the same time. For this reason, there is a time difference in the burning of the door-to-door rubber over the entire height of the landing door.For example, when the door-to-door rubber burns down from above, the unevenness of the door cover until the lower door-to-door rubber burns down. There is a problem that smoke and flames flow through the gap on the door-door side of the landing door of the rubber part of the door-to-door that has been burned down.

  In the configuration described in Patent Document 2, if the thermal expansion sealing material expands at the same time, the gap can be closed at the same time. However, the landing door is heated from the top to the bottom in the event of a fire. The thermal expansion sealing material over the range expands from the upper side to the lower side with a time difference. For this reason, there is a problem that flames and smoke flow from there, since the gap on the door contact side of the door is not closed until the lower thermal expansion material, which is slow in expansion, expands.

  Furthermore, in the configuration described in Patent Document 3, since the thermal foaming expansion material that foams by heat is used, it has the same problem as Patent Document 2, and the heat that is foamed due to irregular deformation of the door at the time of fire. There exists a problem which a foaming expansion material is crushed and generates a clearance gap there.

  The objective of this invention is providing the elevator apparatus which does not produce a clearance gap between the door stop part of a landing door, and a door stop member also at the time of a fire.

  In order to achieve the above object, the present invention provides a fixing means for fixing the door stop portion of the landing door to the door stop member in the event of a fire.

  By setting it as the said structure, since the door stop part of a landing door is fixed to the door stop member, a shift | offset | difference does not arise between both, As a result, generation | occurrence | production of a clearance gap does not arise between both.

  As described above, according to the present invention, it is possible to obtain an elevator apparatus that does not cause a gap between the door stop portion of the landing door and the door stop member even during a fire.

  Hereinafter, a first embodiment of an elevator apparatus according to the present invention will be described with reference to FIGS.

  An elevator apparatus according to the present invention includes a hoistway 1 provided in a building, a car (not shown) that is moved up and down by a hoisting machine (not shown) in the hoistway 1, and the hoistway. 1 and an entrance 3 that communicates with the floor 2 of the building, and left and right double landing doors 4A and 4B that open and close by moving the entrance 3 laterally.

  The entrance / exit 3 is defined by a three-sided frame 7 composed of left and right vertical frames 5A and 5B and an upper frame 6 straddling in the horizontal direction above the vertical frames 5A and 5B. The landing doors 4A and 4B are suspended from door rails 9 supported in the horizontal direction in the hoistway 1 on the back side of the upper frame 6 via door hangers 10A and 10B. Door shoes 11 are respectively provided at the lower ends of the landing doors 4A and 4B, and the door shoes 11 are guided to a sill 12 supported in the hoistway 1.

  In the elevator apparatus configured as described above, a recessed groove 13 is formed in the door stop portion of the landing door 4A so as to extend over the entire height of the landing door. The door contact portion of the landing door 4B protrudes from the end opening 4H and is recessed. An engagement body 14 that fits in the entire height of the groove 13 is incorporated. The engaging body 14 has guide members 15A and 15B at the upper and lower portions thereof, and the guide members 15A and 15B are guide members 17A and 17B fixed to a support member 16 provided at the entire height of the landing door 4B. It is supported so that it can move horizontally. Further, a plurality of shape memory alloy bodies 18A, 18B, 18C, and 18D are provided between the engagement body 14 and the support member 16 that are in a contracted state at room temperature and are restored and expanded when heat is applied.

  In the above-described configuration, as shown in FIGS. 1 and 3, the engagement body 14 built in the landing door 4B is positioned on the inner side of the door stop portion of the landing door 4B, so that the landing door 4A, There will be no hindrance to the opening and closing of 4B. In this state, when a fire occurs and the landing doors 4A and 4B are heated, the shape memory alloy bodies 18A to 18D expand and move the engagement body 14 along the guide members 15A, 15B, 17A, and 17B. As shown in FIG.2 and FIG.4, the engaging body 14 is protruded from the edge part opening 4H of the door stop part of the landing door 4B, and it is made to fit in the concave groove 13 of the landing door 4A, and is connected. The door stop portions of the landing doors 4A and 4B are fixed by the connection of the engaging body 14 into the concave groove 13 by fitting. By forming the engaging body 14 as a rigid body, even if the landing doors 4A and 4B try to bend and deform due to heat, the door stop portion is prevented from being bent and deformed, so that there is a gap between the door stop portions of both landing doors 4A and 4B. As a result, there is no gap, so it is possible to prevent the flow of flame and smoke.

  In the present embodiment, one of the door contact portions of both landing doors 4A and 4B constitutes a door contact portion according to the present invention, and the other constitutes a door contact member. Further, the concave groove 13 and the engaging body 14 are fixing means according to the present invention, a member for connecting the door stop portion to the door stop member, a member for regulating the curvature of the door stop portion of the adjacent landing door, and the door stop portions of the adjacent landing doors. The shape memory alloy bodies 18A to 18D constitute the driving means for driving the fixing means according to the present invention.

  7 and 8 show a second embodiment of the elevator apparatus according to the present invention, and the same reference numerals as those in FIGS.

  The present embodiment differs from the first embodiment in that the engagement body driven by the shape memory alloy bodies 18A to 18D is composed of a plurality of engagement shafts 14A, 14B, 14C, and 14D. .

  By configuring as described above, the engagement shafts 14a to 14D are normally located in the door stop portion of the landing door 4B as shown in FIG. When a fire occurs in this state, as shown in FIG. 8, the shape memory alloy bodies 18A to 18D receive heat and exert driving force, and the plurality of engagement shafts 14a to 14D are engaged with the mating landing door 4A. Push into the groove 13 to engage. However, since the engagement shafts 14a to 14D are not integrally formed over the entire height of the landing doors as in the first embodiment, they are discontinuous, so Bending deformation cannot be suppressed. However, since the bending deformation between the door contact portions is fixed by fitting the engaging shafts 14a to 14D into the engaging groove 13, the bending deformation occurs synchronously without any deviation between them. As a result, there is no gap between the door stop portions, and therefore flame and smoke can be prevented from flowing through.

  In the second embodiment, the engagement shafts 14a to 14D are fitted into the recessed grooves 13 to fix the door-contacting portions. For example, the doors are driven to one side of the landing doors 4A and 4B. In the second embodiment, a plurality of connecting claws driven by the means are built in the entire height of the landing door, and an engaging portion for engaging and connecting the plurality of connecting claws is formed on the other side of the landing doors 4A and 4B. An effect equivalent to that of the embodiment can be obtained.

  In the present embodiment, the concave groove 13 fits the discontinuous engagement shafts 14a to 14D. Therefore, as in the first embodiment, the concave groove 13 is a groove extending over the entire height of the landing door. There is no necessity, and it is effective in terms of reducing the gap as much as possible to make the groove suitable for the cross-sectional shape of the engagement shafts 14a to 14D.

  Next, a third embodiment of the elevator apparatus according to the present invention will be described with reference to FIGS.

  Although the said 1st and 2nd embodiment is the structure of the door stop part of the two landing doors 4A and 4B of double doors on either side, this embodiment has two single door doors 4A, It is related with the structure of the door stop part and door stop member of 4B. Since the same reference numerals as those in FIGS. 1 to 8 indicate the same parts, detailed description thereof will not be repeated.

  In this embodiment, in FIG. 10, the left end of the landing door 4 </ b> A becomes a door stop, and the door stop hits the vertical frame 19 of the three-sided frame 7 which is a door stop member, so that the hoistway 1 and the building The doorway 3 communicating with the floor 2 is closed, and the two doors 4A and 4B move to the right end of the sill 12 to open the doorway 3.

  The configuration of the door stop portion of the landing door 4A is the same as the door stop portion of the landing door 4B of FIGS. 1 to 8, and the engagement body 14 and the engagement shaft 14a driven by the shape memory alloy bodies 18A to 18D. -14D is built in the door stop portion of the landing door 4A, and a groove 20 is formed at a position of the vertical frame 19 facing the door stop portion of the landing door 4A.

  In the above configuration, as shown in FIG. 9, the engagement body 14 (or the engagement shafts 14 </ b> A to 14 </ b> D) is normally in the door stop portion of the landing door 4 </ b> A, but fits into the groove 20 in the event of a fire. By projecting, the curved deformation of the door stop portion of the landing door 4A can be prevented, and the generation of a gap due to the curved deformation can be prevented.

  By the way, each said embodiment makes shape memory alloy body 18A-18D obtain drive force with the heat at the time of a fire, and makes the engagement body 14 (or engagement shaft 14A-14D) protrude from a door stop part. However, since the landing doors 4A and 4B are sequentially heated from the upper side to the lower side in the event of a fire, the shape memory alloy bodies 18A to 18D cannot obtain the driving force all at once, and the driving force is obtained sequentially from the upper side. Thus, the engagement body 14 (or the engagement shafts 14A to 14D) is driven. As a result, the engaging body 14 (or the engaging shafts 14A to 14D) is fitted in the concave groove 13 on the upper side, as shown by a two-dotted line in FIG. It will be in the state which fits to the middle or does not fit at all. However, when heat sufficient to drive the shape memory alloy bodies 18A to 18D is transmitted downward, the engagement body 14 (or the engagement shaft 14A) previously fitted to the concave groove 13 serves as a guide for the engagement body 14. Since the lower part (or the engaging shafts 14B to 14D) is sequentially fitted into the concave groove 13, the door stoppers are fixed to each other or the door stoppers and the door stopper members are fixed before the door stoppers start to deform. Can do.

  However, for customers who want to fix door-to-doors or door-to-door parts and door-stop members immediately after a fire occurs, after the fire control operation of the elevator system has been completed, it is possible to perform a manual operation by an administrator or fire control operation. Command means for forcibly driving the engagement body 14 (or engagement shafts 14A to 14D) with the end as a trigger is provided, and the drive means is driven by the command means to move the engagement bodies 14 (or engagement shafts 14A to 14D) all at once. It only has to be fitted into the groove 13.

  11 and 12 show an elevator apparatus according to the present invention configured to drive the driving means by command means so that the engaging bodies 14 (or the engaging shafts 14A to 14D) are fitted into the concave grooves 13 all at once. 4th Embodiment is shown. 1 to 10 indicate the same parts.

  In the present embodiment, the engagement body 14 is pressed by a pressing spring 21 that constantly presses, and the engagement body 14 at the time of pressing is dimensioned to fit into the groove 13 as shown in FIG. Keep in a relationship. The engaging body 14 is connected to a holding body 22 having a flange portion formed at the tip thereof, and the flange portion of the tip portion extends through the support member 16. On the other hand, a hook 23 that engages with the collar portion of the holding body 22 is pivotally supported in the landing door 4B, and the hook 23 holds the engagement with the collar portion of the holding body 22 to press the spring 24. Is always pressed to the holding body 22 side. An electromagnet 25 is provided at a position for attracting the hook 23 against the pressing spring 24. The switch 26 for operating the electromagnet 25 is provided, for example, in an administrator room.

  In the above configuration, during normal operation of the elevator apparatus, the engaging body 14 is held in the landing door 4B by the holding body 22 and the hook 23 against the pressing spring 21. When a fire occurs in this state, a manager (operator) in the manager's room pushes the switch 26 to activate the electromagnet 25. The operation of the electromagnet 25 causes the hook 23 to be magnetically attracted to the electromagnet 25 as shown in FIG. 12 against the pressing spring 24, and the engagement between the holding body 22 and the hook 23 is released. The engagement body 14 with the holding body 22 disengaged protrudes from the door stop portion by the pressing force of the pressing spring 21 and fits into the recessed groove 13 of the landing door 4A serving as a door contact member. Of course, the manager's operation of the switch 26 is of course carried out after it is confirmed that there are no passengers in the car and there is no car call by monitoring the presence or absence of passengers in the car and the car call. It is.

  From the above, in the present embodiment, the pressing spring 21, the holding body 22, the hook 23, and the electromagnet 25 serve as driving means for driving the fixing means (engaging body 14) of the present invention, and the power supply circuit including the switch 26 is the present invention. It becomes command means for activating the drive means (pressing spring 21), and also generates a drive signal by the operation of the operator of the present invention.

  Furthermore, as indicated by a two-dot chain line in FIG. 11, the electromagnet 25 may be operated by a control device 27 that controls the operation of the elevator apparatus. In other words, the elevator device is controlled by the control device 27 so as to perform a fire control operation in which a car is operated so as to avoid a fire occurrence floor or a forced landing is performed on the nearest floor in the event of a fire. . Therefore, when the fire control operation is ended by the control device 27, the electromagnet 25 is operated, so that the door-to-door portions can be fixed to each other or the door-to-door portions and the door-to-doors without depending on the switch operation of the manager. The member can be fixed.

  Furthermore, the control device 27 may operate the electromagnet 25 that is a part of the driving means based on the fire detection signal of the fire detector 28. That is, when the fire detection signal from the fire detector 28 is received, the control device 27 instructs the fire control operation, and after confirming that the fire control operation is completed, activates the electromagnet 25. In an elevator apparatus that does not have a fire control operation function, the electromagnet 25 may be operated after a predetermined time has elapsed after receiving a fire detection signal from the fire detector 28.

  By the way, the fire detectors 28 are provided in various places of the building. Even if a fire detector for detecting the heat of the flame is provided, a fire detector for detecting the smoke is provided, or the flame and smoke are further emitted. You may provide the fire detector to detect, respectively.

  In the above configuration, the control device 27 serves as drive command means for operating the drive means of the present invention based on the specific signal, and the fire detection signal from the fire detector 28 serves as the specific signal of the present invention.

  In the fourth embodiment, the pressing spring 21, the holding body 22, the hook 23, and the electromagnet 25 are used as the driving means for driving the engaging body 14. The gas fluid may be instantaneously expanded by the operation of the switch 26, the radio operation, or the command of the control device 27, and the engagement body 14 may be driven using the pressure at the time of expansion. A member that heats the heater in response to a command from the control unit 27 or wirelessly, and uses the generated heat to extend the shape memory alloy body to drive the engagement body 14 or use the heat to hold the pressing spring 21 The engagement body 14 may be driven by fusing.

The principal part crossing top view which shows 1st Embodiment of the elevator apparatus by this invention. The figure which shows the time of the action | operation of FIG. The longitudinal cross-sectional front view of FIG. FIG. 3 is a longitudinal front view of FIG. 2. The front view which shows the boarding doorway of an elevator apparatus. FIG. 6 is a cross-sectional plan view taken along line AA in FIG. 5. FIG. 3 is a view corresponding to FIG. 3 showing a second embodiment of the elevator apparatus according to the present invention. The figure which shows the time of the action | operation of FIG. The equivalent diagram of FIG. 1 which shows 3rd Embodiment of the elevator apparatus by this invention. FIG. 6 is a view corresponding to FIG. 6 of a third embodiment of the elevator apparatus according to the present invention. The equivalent figure of FIG. 1 of 4th Embodiment of the elevator apparatus by this invention. The figure which shows the time of the action | operation of FIG.

Explanation of symbols

  4A, 4B ... landing door, 13, 20 ... concave groove, 14 ... engagement body, 14A-14D ... engagement shaft, 18A-18D ... shape memory alloy body, 21, 24 ... pressure spring, 22 ... holding body, 23 ... Hook, 25 ... electromagnet, 26 ... switch, 27 ... control device, 28 ... fire detector.

Claims (10)

  A hoistway provided in a building, a car that elevates and lowers in the hoistway, an entrance that communicates the hoistway and the floor of the building, and a landing that moves the entrance horizontally to open and close In the elevator apparatus having a door, a concave groove extending over the entire height of the landing door is formed in one of the door contact portion of the landing door and the door contact member in contact with the door contact portion, and on the other side, a horizontal direction is provided by the guide member. An elevator comprising: an engaging body that is movably supported and fits over the entire height of the concave groove in the event of a fire; and a plurality of drive means for driving the engaging body into the concave groove by heat. apparatus.   The elevator apparatus according to claim 1, wherein the engagement body is a member that connects a door stop portion of the landing door to a door stop member.   The elevator apparatus according to claim 1, wherein the engagement body is a member that regulates the curvature of door contact portions of adjacent landing doors. The elevator apparatus according to claim 1, wherein the engagement body is a member that suppresses a shift between door stop portions of adjacent landing doors. A hoistway provided in a building, a car that elevates and lowers in the hoistway, an entrance that communicates the hoistway and the floor of the building, and a landing that moves the entrance horizontally to open and close In the elevator apparatus having a door, a concave groove extending over the entire height of the landing door is formed in one of the door contact portion of the landing door and the door contact member in contact with the door contact portion, and on the other side, a horizontal direction is provided by the guide member. Provided with an engagement body that is supported so as to be movable and fits over the entire height of the concave groove at the time of a fire, a plurality of drive means for driving the engagement body at the time of a fire, and a command means for operating these drive means. Elevator device characterized by . The elevator apparatus according to claim 5, wherein the command means generates a drive signal by an operation of an operator . A hoistway provided in a building, a car that elevates and lowers in the hoistway, an entrance that communicates the hoistway and the floor of the building, and a landing that moves the entrance horizontally to open and close In the elevator apparatus having a door, a concave groove extending over the entire height of the landing door is formed in one of the door contact portion of the landing door and the door contact member in contact with the door contact portion, and on the other side, a horizontal direction is provided by the guide member. An engagement body that is movably supported and fits over the entire height of the concave groove in the event of a fire, a plurality of drive means for driving the engagement body in the event of a fire, and a drive command for operating these drive means based on a specific signal Means for providing an elevator. 8. The elevator apparatus according to claim 7, wherein the drive command means generates a drive signal based on a fire detection signal . The elevator apparatus according to claim 8 , wherein the fire detection signal detects heat . The elevator apparatus according to claim 8 , wherein the fire detection signal detects smoke .

Images