JP5832326B2 - Freezing prevention device for elevator doors - Google Patents

Description

  The present invention relates to an elevator device, and more particularly to a landing door freeze prevention device for an elevator device that operates the landing door smoothly by avoiding a situation where the threshold of the landing door of the elevator device is clogged or frozen. It is.

  In an elevator device installed in a building such as a condominium, an event hall, or a platform of a station, the elevator device platform often faces the outdoors. In such elevator device platforms, snow blows during snowfall in winter, and the snow enters the sill of the elevator device doors and becomes clogged, or the water freezes at night, hindering the opening and closing operation of the landing doors. May occur.

  Moreover, even if it is a building where snow is not blown, when a user of an elevator apparatus enters from outside and uses the elevator apparatus, snow may adhere to the threshold via the user's shoes or umbrella. .

  Therefore, when the landing door of the elevator apparatus is clogged with snow, as described in Japanese Patent Application Laid-Open No. 2009-23750 (Patent Document 1), the clogging due to snow is prevented and the landing door is always opened and closed smoothly. Elevator devices that can do this have been proposed.

JP 2009-23750 A

  In the conventional technology as in Patent Document 1, the snow accumulated on the sill can be melted by the heater provided in the sill, but the sill becomes larger because it is necessary to install a heater as a heating element on the sill. There is a limit to the storage capacity of the snow melting device.

  In addition, when adding a snow melting device for a landing door to an elevator device that has already been installed, if the size of the existing sill differs from the sill with a heater, the size of the building will be excessively large. Since construction is required, there is a problem that the snow melting device cannot be easily installed.

  An object of the present invention is to provide a landing door for an elevator apparatus that can smoothly open and close the landing door by preventing clogging and freezing of snow without performing corresponding construction on the building side with respect to the existing elevator apparatus. It is to provide an anti-freezing device.

A feature of the present invention is an elevator apparatus that includes at least a landing door installed at a landing and a landing-side sill that is disposed below the landing door and is attached to a building, and the landing door includes at least a heating member. freeze prevention device provided together warm the landing side sill in contact with the landing side sill heating member in the state in which the landing door is closed, freezing prevention device is incorporated in the landing doors, further antifreezing device, At least a slide member built in the landing door, a link connected to the slide member, and a heating member connected to the link, and the link is made by pressing and displacing the slide member by another landing door facing the landing door. The heating member is in contact with the landing side sill via

  According to the present invention, since the freeze prevention device is configured to be built in the landing door, the landing door is manufactured at the factory and the landing door is installed while leaving the landing threshold of the existing elevator device. It will be able to.

  Therefore, since it can respond by exchanging landing doors, construction on the building side is not necessary, and the construction period can be shortened.

It is a block diagram which shows schematic structure of an elevator apparatus. It is a cross-sectional view showing a cross-section near the landing door of the elevator apparatus. FIG. 3 is a cross-sectional view showing the AA cross section in the vicinity of the landing door of the elevator apparatus according to the embodiment of the present invention shown in FIG. 2 in a state where the landing door is closed. FIG. 3 is a cross-sectional view showing the AA cross section in the vicinity of the landing door of the elevator apparatus according to the embodiment of the present invention shown in FIG. 2 in a state where the landing door is opened. It is sectional drawing which shows the relationship between the landing door which becomes one Example of this invention, and a threshold. It is sectional drawing of the freezing prevention apparatus attached to the landing door which becomes one Example of this invention.

  A landing door anti-freezing device according to an embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 shows the overall configuration of an elevator apparatus. A machine room 2 is provided above a hoistway 1 of a building, and a hoisting machine 3 is installed in the machine room 2. The hoisting machine 3 includes a traction sheave 4, and a main rope 5 is wound around the traction sheave 4. A car 6 provided in the hoistway 1 is connected to both ends of the main rope 5, and a counterweight 7 is connected to the other end, and the car 6 and the counterweight 7 are suspended in the hoistway 1. Has been lowered.

  Then, the traction sheave 4 is rotated by the rotation of the hoisting machine 3 and the main rope 5 is moved so that the car 6 and the counterweight 7 are moved up and down in the hoistway 1 in opposite directions. These devices are already well known.

  A car door 9 is provided in front of the car 6, and the car door 9 opens and closes the entrance of the front of the car 6. The machine room 2 is provided with a control panel 10 as control means for controlling the elevator apparatus, and the hoisting machine 3 is controlled by the control panel 10 to move the car 6 up and down.

  On each floor of the building, there is an elevator hall 18 facing the outdoors. An entrance 19 leading to the hoistway 1 is formed on the wall surface of each landing 18, and a landing door device 20 is provided at the entrance 19. The landing door device 20 includes a landing door 21 that moves left and right to open and close the entrance 19.

  The entrance / exit 19 is provided with a landing side threshold 22 for guiding the movement of the landing door 21. The landing side sill 22 is made of, for example, a metal such as aluminum or stainless steel, and has a landing side sill groove 22a on the upper surface. A guide shoe provided below the landing door 21 is slidable in the landing side sill groove 22a. The landing door 21 moves to the left and right along the landing side sill groove 22a.

  The doorway 19 of the elevator hall 18 is normally closed by a landing door 21, and when the car 6 reaches and stops at the elevator hall 18, and the car door 9 opens, the car door 9 In conjunction with this, the landing door 21 of the landing door device 20 is opened, thereby enabling passengers to get on and off between the car 6 and the elevator device hall 18. After the passengers get on and off, the car door 9 and the landing door 21 are closed, and the car 6 moves to the destination floor.

  The above is the structure and operation of a well-known elevator apparatus. Next, an anti-freezing apparatus for an elevator apparatus according to an embodiment of the present invention will be described.

  FIG. 2 is a cross-sectional view of the elevator apparatus in the vicinity of the landing 18, and the car 6 is provided with a car-side sill 23 having a car-side sill groove 23 a that guides the opening and closing of the car door 9. .

  3 to 6 show details of the anti-freezing device according to the present invention, and the landing door 21 has a built-in anti-freezing device. This makes it possible to assemble an anti-freezing device on the landing door side without requiring construction on the building side.

  As shown in FIG. 6, the landing door 21 is made of a plate material having an L-shaped cross section. One surface is a landing side surface 21a and the other surface is a hoistway side surface 21b. A rectangular through hole 21d is provided in the bottom surface 21c of the landing door 21, and the landing side surface 21a and the hoistway side surface 21b other than the through hole 21d are formed of a continuous plate material. Links 24a and 24b described below are inserted into the through hole 21d.

  As is well known, the landing door 21 is installed in a manner to be suspended from above at the entrance 19 of the landing. Therefore, it is possible to replace only with this landing door 21, and using this replaceable configuration, the landing door provided with the anti-freezing device is installed at the landing of the existing elevator apparatus.

  As shown in FIG. 6, two links 24a and 24b are disposed between the landing side surface 21a and the hoistway side surface 21b of the landing door 21, and the slide member 25 and the heating member are formed by the two links 24a and 24b. 26 are connected so as to be sandwiched. The slide member 25 and the heating member 26 are supported by the link 24, and the link 24 is supported by the pin 27 on the landing side surface 21 a and the hoistway side surface 21 b of the landing door 21.

  The links 24a and 24b and the slide member 25 are rotatably connected by pins 28, and the links 24a and 24b and the heating member 26 are rotatably connected by pins 29. The links 24a and 24b extend downward through the through-hole 21d and hold the heating member 26 on the tip side. Therefore, the movement of the slide member 25 is transmitted to the heating member 26 via the links 24a and 24b.

  Here, when the heating member 26 and the link 24 are connected via an elastic body, an excessive displacement of the link 24 is absorbed and the heating member 26 is brought into close contact with the landing side sill 22 via the link 24. Can do.

  Accordingly, as will be described later, when the landing door 21 is closed as shown in FIG. 5, the heating member 26 is brought into close contact with the landing side sill 22, and when the landing door 21 is opened, the heating member 26 is detached from the landing side sill 22. I try not to touch it.

  On both side surfaces of the slide member 25, guide protrusions 30 extend along the moving direction of the slide member 25, and have a function of guiding the movement of the slide member 25. The guide protrusion 30 may be formed by molding at the same time as the landing door 21 is formed, or may be formed as a separate member and integrated with the landing door 21 by welding or the like.

  It is also effective to attach a lubricating synthetic resin (fluorine) plate to both sides of the slide member 25 that slides with the guide protrusion 30 to reduce sliding resistance.

  Furthermore, a guide groove for guiding the slide member 25 may be formed on the inner surface of the landing door 21 for guidance. In this case, in order to escape the movement of the link 24 in the vertical direction, it is preferable to provide a vertically long through groove in the slide member 25. By engaging the pin 28 with the through hole, the vertical movement of the pin 28 accompanying the rotation of the link 24 can be released, and the horizontal movement of the slide member 25 can be made smooth.

  As shown in FIGS. 3 and 4, a return spring 31 made of a compression spring is provided on one end side of the guide protrusion 30, and the slide member 25 is moved to the other landing door 21 by the return spring 31. It is elastically biased to the side.

  The link 24 and the slide member 25 are made of a material having good thermal conductivity, such as aluminum and stainless steel, or are used as a composite material, and have a function of efficiently transferring heat of the heating member 26 described later to the landing door 21. is there.

  The heating member 26 is a metal casing formed in the shape of a rectangular parallelepiped as a shape, and a heater which is a heat source is incorporated therein. The heating member 26 incorporating the heater is also made of a material having good heat transfer properties such as aluminum and copper in consideration of heat transfer.

  As the heater, a nichrome wire heater, a positive temperature coefficient ceramic heater, a sheathed heater, or the like can be used, and an appropriate type of heater is used depending on the specification. The heat of the heating member 26 supplies heat to at least two heating locations. One is the landing door 21 described above, and the other is the landing door side sill 22 of the landing door 21.

  Door shoes 32 are attached to the bottom surfaces 21 c of the landing doors 21 at both ends of the heating member 26, and the door shoes 32 prevent dust entering the landing side sill 22. Furthermore, a temperature sensor 33 made of a thermocouple is provided on the landing door side sill 22. The temperature sensor 33 measures the temperature of the landing door side sill 22 and controls the energization state of the heating member 26, and controls the heat generation state of the heating member 26 by energization from a control panel (not shown).

  Next, the operation of the above configuration will be described. FIG. 3 shows a state where the landing door 21 is closed.

  When the landing door 21 is closed, one end surface of the slide member 25 is pushed by the side surface portion of the one landing door 21, and the slide member 25 moves to the left on the paper surface while compressing the return spring 31. By this movement, the slide member 25 is displaced so as to rotate around the pins 27 of the links 24a and 24b. For this reason, the guide protrusion 30 of the landing door 21 is open at the top, allowing the slide member 25 to move upward and to the left.

  On the other hand, the heating member 26 attached to the other ends of the links 24a and 24b is also displaced so as to rotate around the pins 27 of the links 24a and 24b. For this reason, the heating member 26 is displaced downward on the paper surface and comes into close contact with the landing side sill 22 as shown in FIG.

  Therefore, if the heating member 26 generates heat in this state, the heat is transmitted to the slide member 25 through the links 24a and 24b, and is transmitted to the landing door 21 through the guide protrusions 30 and the like to warm the landing door 21. be able to.

  Further, since the heating member 26 is in close contact with the landing side sill 22, the heat of the heating member 26 is directly transmitted to the landing side sill 22 and can warm the landing side sill 22 itself.

  In this way, the landing door 21 and the landing side sill 22 can be simultaneously heated by heat transfer from the heating member 26.

  Next, FIG. 4 shows a state in which the landing doors 21 are open. When both landing doors 21 are opened, the slide member 25 moves to the right on the paper surface by the elastic force of the return spring 31. By this movement, the slide member 25 is displaced so as to rotate around the pins 27 of the links 24a and 24b. As described above, the guide protrusion 30 of the landing door 21 is open at the top, allowing the slide member 25 to move upward and to the left.

  On the other hand, the heating member 26 attached to the other ends of the links 24a and 24b is also displaced so as to rotate around the pins 27 of the links 24a and 24b. For this reason, the heating member 26 is displaced upward on the paper surface, and is separated from the landing side sill 22 as shown in FIG. For this reason, since the contact state of the heating member 26 and the landing side sill 22 is lost, the landing door 21 can perform a smooth opening operation.

  In the anti-freezing device as described above, when snow blows and adheres from the gap between the landing door 21 and the landing side sill 22, the snow is melted by the landing door 21 and the landing side sill 22 heated by the heating member 26. Therefore, freezing can be suppressed. As a result, snow or the like is not clogged in the landing side sill, and the landing door 21 can be smoothly opened and closed.

  Moreover, the temperature information of the hall side threshold 22 of the elevator apparatus is detected by a temperature sensor 33, and the energization state of the heater built in the heating member 26 is controlled by the temperature information.

  For example, when the temperature is below the temperature at which freezing is expected due to snowfall, the heater is energized and the landing door 21 and the landing side sill 22 are warmed. When the heater is heated to a temperature capable of melting snow, the heater is turned off and heat generation is stopped. As described above, since the heater is driven only when heating is necessary, waste of electric energy can be saved. Furthermore, when it is necessary to maintain a higher temperature, such as when a strong cold wave comes, it is possible to increase the amount of electricity to increase the amount of heat generated.

  Thus, since the anti-freezing device according to the present invention is configured to be built in the landing door, the landing door is manufactured at the factory and installed while leaving the landing side threshold of the existing elevator device. Will be able to.

  Therefore, since it can respond by exchanging landing doors, construction on the building side is not necessary, and the construction period can be shortened.

  6 ... car, 9 ... car door, 21 ... landing door, 22 ... landing side sill, 22a ... landing side sill, 23 ... car side sill, 23a ... car side sill, 24 ... link, 25 ... sliding member, 26 ... heating member, 27 ... pin, 28 ... pin, 29 ... pin, 30 ... guide projection, 32 ... door shoe.

Claims (8)

In an elevator apparatus comprising at least a landing door installed at the landing, and a landing side sill that is arranged below the landing door and attached to the building,
The provided antifreeze device comprising at least a heating element in the landing doors, the heating member in a state in which the landing door has been closed by contact with the landing side sill warm the platform side sill together,
The anti-freezing device is built in the landing door, and the anti-freezing device further includes at least a slide member built in the landing door, a link connected to the slide member, and the link connected to the link. An elevator apparatus comprising a heating member, wherein the heating member is brought into contact with the landing side sill via the link by pressing and displacing the slide member with another landing door facing the landing door. Platform door freezing prevention device . In the elevator door landing prevention device according to claim 1 ,
The landing door freezing prevention device for an elevator apparatus, wherein the slide member is biased toward the other landing door by a return spring . In the elevator door landing prevention device according to claim 1 ,
The landing door freezing prevention device for an elevator apparatus, wherein the heating member heats both the landing side sill and the landing door . In the landing door freezing prevention device of the elevator apparatus according to claim 3 ,
The slide member is guided by a guide protrusion formed on the inner peripheral surface of the landing door, and heat of the heating member is transmitted to the landing door via the link, the slide member, and the guide protrusion. A landing door freezing prevention device for an elevator device characterized by the above . In the elevator door landing prevention device according to claim 1 ,
The landing door freezing prevention device for an elevator apparatus, wherein the sliding member is in contact with the landing door with a synthetic resin having lubricity . In the elevator door landing prevention device according to claim 1 ,
The elevator door anti-freezing device for an elevator apparatus, wherein the heating member is made of a casing made of a metal having a heat conductivity and having a heater inside . In the landing door freezing prevention device of the elevator apparatus according to claim 6 ,
The landing door freezing prevention device for an elevator apparatus, wherein the metal having good thermal conductivity is aluminum or copper . In the elevator door landing prevention device according to claim 1 ,
The landing door freezing prevention apparatus for an elevator apparatus, wherein a temperature sensor is provided on the landing side sill, and the energization state of the heating member is controlled by the temperature sensor .

Images