JPH08245144A - Elevator door opening and closing device - Google Patents

Abstract

PURPOSE: To certainly carry out opening and closing motions of an elevator door even when a foreign matter gets in a sill groove by providing a foreign matter detection means to detect existence of the foreign matter getting in the sill groove and increasing driving force of the opening and closing motion to a degree to get over the foreign matter at the time of detecting the foreign matter. CONSTITUTION: In the case when closing motion of an elevator door 2 is carried out by a door opening and closing drive device in a state where a foreign matter unexpectedly intrudes into a sill groove 7, when a door leg 8 of the elevator door 2 and the foreign matter collide against each other, the elevator door 2 is inclined in the closing direction, one hanger roller 51 floats up from on a movable hanger rail 30, and an up thrust roller 52 pushes up the hanger rail 30. When a detection switch element 14 is started by this motion, a driving force increase signal to increase driving force within a range not to cause a problem in safety is output to the door opening and closing drive device 1 from a driving control device 15, audio information is broadcast to a user from an audio output device 13 and an attention is called.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door opening / closing device for opening / closing an elevator door installed in an elevator cage or an elevator landing place. In particular, the present invention relates to an elevator door opening / closing device that can ensure the safety of the user and can improve the life of the device itself when foreign matter is inadvertently mixed into the threshold groove that guides the elevator door.

[0002]

2. Description of the Related Art FIGS. 10 to 12 are schematic views showing a main portion of an elevator door opening / closing device according to a prior art. First, as shown in FIG. 10, normally, in an elevator door opening / closing device, a door opening / closing drive device 1 opens / closes an elevator door 2 installed in an elevator cage or an elevator boarding / alighting place. The elevator door 2 is supported by a hanger rail 3 arranged on the upper side through a plurality of hanger assemblies 5, and the elevator door 2 can be opened and closed along the hanger rail 3. Clothes rail 3
Rail guides 4 are attached to both ends of the rail guides 4, and the rail guides 4 fix the hanger rails 3. The hanger assembly 5 is fixed to the upper part of the elevator door 2 with bolts or the like. One hanger assembly 5 is fixed to the door opening / closing drive device 1 side, and the other hanger assembly 5 is on the opposite side (elevator doorway 6
Side) is fixed. The hanger assembly 5 is arranged on a hanger roller 51 which rolls on the hanger rail 3 to open and close the elevator door 2, and an upthrust roller which is arranged at a position facing the hanger roller 51 with the hanger rail 3 interposed therebetween to prevent the hanger roller 51 from coming off. 52 is provided. When the hanger roller 51 is in contact with the hanger rail 3, the hanger rail 3 and the up thrust roller 52 are in contact with each other.
There is a proper gap between and. A sill groove 7 is arranged at a lower portion of the elevator door 2 including a region from a region where the elevator door 2 is stored when the elevator door 2 is opened to a doorway 6 of the elevator. The sill groove 7 is slidably engaged with a door leg 8 which is attached and fixed to the lower portion of the elevator door 2, and prevents the elevator door 2 from swinging in the front-rear direction during the opening / closing operation.

Next, the operation of the elevator door opening / closing device will be described. When closing the elevator door 2, the door opening / closing drive device 1 moves the elevator door 2 from the left side to the right side in FIG. 10. When the elevator door 2 is moved by the door opening / closing drive device 1, the hanger roller 5 of the hanger assembly 5 is moved.
1 rolls on the hanger rail 3, and the elevator door 2 moves along the hanger rail 3. On the other hand, in the lower part of the elevator door 2, the door leg 8 is guided by the threshold groove 7, and the elevator door 2 moves along the threshold groove 7. That is, the elevator door 2 can move in parallel with the hanger rail 3 and the threshold groove 7 without swinging back and forth, and the elevator door 2 can be closed.

FIG. 11 shows a state in which a foreign substance 10 is mixed inside the threshold groove 7. As shown in the figure, when the foreign material 10 is accidentally mixed inside the threshold groove 7 when the elevator door 2 is closed, the foreign material 10 is larger than the driving force of the door opening / closing drive device 1 in the elevator door 2. When the force to stop is greater, the elevator door 2 will move to the elevator doorway 6
Start to lean to the side. As the inclination of the elevator door 2 advances, the upthrust roller 52 comes into contact with the lower surface of the elevator rail 3, and the movement of the elevator door 2 is temporarily stopped. In such a state, the hanger roller 51 makes the hanger rail 3
Emerge from. When the elevator door 2 does not reach the end of the hanger rail 3 after a few seconds have passed since the elevator door 2 started moving, the door opening / closing drive device 1 moves the elevator door 2 in the opposite direction (opening direction) as shown in FIG. The door opening / closing drive device 1 moves the elevator door 2 again in the closing direction. This operation is repeated.

[0005]

However, the following points are not taken into consideration in the conventional elevator door opening / closing device. First, in the case where there is no particular safety problem with the mixing of the foreign matter 10, since the driving force of the door opening / closing drive device 1 is set to a constant value, the elevator door 2 will not be closed forever, resulting in an elevator Do not work. In such a case, the user will be greatly inconvenienced. The same applies to the opening operation of the elevator door 2. Second,
There is a case where the user can easily remove the foreign matter 10 without any safety problem. However, usually, the reason why the elevator door 2 is not closed is unknown to the user. In such a case, not only the elevator does not operate, but it also causes a failure of the elevator.

The present invention has been made to solve the above problems, and the objects of the present invention are as follows.

(1) An object of the present invention is, firstly, when there is no particular problem in safety, the opening / closing operation of the elevator door can be surely executed even if foreign matter is mixed in the threshold groove, and the operation of the elevator is abruptly performed. An object of the present invention is to provide an elevator door opening / closing device that can prevent the vehicle from stopping.

(2) The second object of the present invention is, secondly, that the user can be informed safely and easily when the user can remove the foreign matter mixed in the threshold ditch, and the elevator operation will be abruptly performed. An object of the present invention is to provide an elevator door opening / closing device capable of preventing stoppages and reducing elevator failures.

[0009]

In order to solve the above-mentioned problems, the present invention firstly proposes a hanger roller in which an upper part of an elevator door installed in an elevator cage or an elevator landing hall rolls on a hanger rail. The elevator door is supported by a hanger assembly including an up-thrust roller for preventing disengagement of the hanger roller, the lower portion of the elevator door is guided in the opening and closing direction by a sill groove, and the elevator door is driven by a door opening and closing drive device along the hanger rail and the sill groove. In an elevator door opening / closing device that performs an opening / closing operation, a foreign matter detecting unit that detects the presence of a foreign matter mixed in the threshold groove, and a driving operation of the opening / closing operation to the extent that the foreign matter can be overcome based on the result detected by the foreign matter detecting unit. A door opening / closing driving force increasing means for outputting an increase signal for increasing the force to the door opening / closing driving device. To. In the elevator door opening / closing device configured as described above, the presence of the foreign matter mixed in the threshold groove is detected by the foreign matter detecting means, and the foreign matter is overcome by the door opening / closing drive force enhancing means based on the detected result. The driving force for the opening / closing operation of the door opening / closing drive device can be increased. Therefore, it is possible to realize an elevator door opening / closing device that can prevent an unexpected operation stop of the elevator.

Secondly, according to the present invention, in the above elevator door opening / closing device, foreign matter detecting means for detecting the presence of foreign matter mixed in the threshold groove, and the user based on the result detected by the foreign matter detecting means. And a voice generation and output means for notifying the presence of a foreign matter by voice. In the elevator door opening / closing device configured as described above, the presence of the foreign matter mixed in the threshold groove is detected by the foreign matter detecting means, and the presence of the foreign matter is voiced to the user by the sound generating and outputting means based on the detected result. I can inform you. Therefore,
It is possible to realize an elevator door opening / closing device that can prevent the operation of the elevator from being stopped unexpectedly and reduce the breakdown of the device itself.

Further, the present invention is characterized in that the foreign matter detecting means comprises any one of the following (1)-(4).

(1) The foreign matter detecting means has a movable hanger rail which is pushed up through an up-thrust roller of a hanger assembly when one end is a center of rotation and the other end of the elevator door rides a foreign matter. A detection switch element for detecting the presence of the foreign matter when the movable hanger rail pushed up is brought into contact with the other end of the movable hanger rail.

(2) When the foreign matter detecting means contacts the hanger rail at the same time as or before the upthrust roller of the hanger assembly when the elevator door rides up the foreign matter, the foreign matter is detected. A detection switch element for detecting the presence is provided.

(3) The foreign matter detecting means is installed at one end of the hanger rail at a position where the hanger roller blocks the beam when the elevator door rides up a foreign matter at a position slightly higher than the hanger roller of the hanger assembly. A photoelectric beam generator and a photoelectric beam receiver installed at the other end of the hanger rail for receiving the beam output from the photoelectric beam generator are provided. The presence of the foreign matter is detected when the beam output from the photoelectric beam generator is blocked by the hanger roller.

(4) The foreign matter detecting means includes a detection switch element for detecting the presence of the foreign matter when the hanger roller of the hanger assembly is separated from the hanger rail when the elevator door rides up the foreign matter.

[0016]

EXAMPLES The structure of the present invention will be described below with reference to examples. In addition, in the first embodiment and the second to fourth embodiments to be described below, the elements denoted by the same reference numerals as the elements illustrated in the above-described FIG. 10 to FIG. Since they overlap, the description is omitted.

Embodiment 1. 1 is a configuration diagram showing a main part of an elevator door opening / closing device according to a first embodiment of the present invention. FIG.
As shown in FIG. 5, the elevator door opening / closing device of this embodiment newly includes foreign matter detecting means, door opening / closing driving force enhancing means, and voice generation / output means.

The foreign matter detecting means includes a movable hanger rail 30 and a detection switch element 14. One end (left side in FIG. 1) of the movable hanger rail 30 has a rotating shaft 31.
It is rotatably attached to the rail guide 4 via. As shown in FIGS. 2 and 3, a movable fixed shaft 32 is attached to the other end (right side in FIG. 1) of the movable hanger rail 30, and the movable fixed shaft 32 is arranged on the rail guide 40. Is coupled to the movable long hole 41. 2 and 3 are enlarged cross-sectional views of a main part of the elevator door opening / closing device. The movable long hole 41 is formed to be long in the vertical direction, guides the vertical movement of the movable hanger rail 30, and regulates the vertical movement. A stopper member 42 that abuts the lower surface of the movable hanger rail 30 is disposed below the rail guide 40, and the stopper member 42 holds the movable hanger rail 30 in a fixed position. Further, an elastic member 43 that contacts the lower surface of the movable hanger rail 30 is disposed below the rail guide 40, and the elastic member 43 presses the lower surface of the movable hanger rail 30 with a certain force. In this embodiment, a coil spring is used as the elastic member 43.

The detection switch element 14 is disposed above the rail guide 40 with an appropriate distance from the upper surface of the movable hanger rail 30. The detection switch element 14 comes into contact with the upper surface of the movable hanger rail 30 when the movable hanger rail 30 moves upward, and when it comes into contact with the upper surface of the movable hanger rail 30, a detection signal is output from the detection switch element 14. The detection signal is output to the machine room control panel 11. The machine room control panel 11 is installed in the machine room located at the top of the elevator hoistway. In this embodiment, the detection switch element 1
A contact sensor is used for 4.

The door opening / closing driving force increasing means includes a drive control device 15. In the drive control device 15, the detection signal output from the detection switch element 14 is input (or directly input) through the machine room control panel 11, and when the detection signal is input, the driving force of the door opening / closing drive device 1 Is output as a driving force increasing signal. For example, the drive control device 15 increases the electric power supplied to the door opening / closing drive device 1. However, the driving force is increased to the extent that the foreign matter 10 can be overcome in a range where the safety of the user can be secured.

The voice generation / output means is a voice generator 12.
And a voice output device 13. In the voice generating device 12, the detection signal output from the detection switch element 14 is input (or directly input) through the machine room control panel 11, and when the detection signal is input, voice information prepared in advance is output. Output to the output device 13. For example, the voice information says, "There is a foreign object caught in the elevator door now. Excuse me, but if you are aware of it, please confirm the safety and remove the foreign object. , Please contact your local staff. "Will be prepared in advance. A speaker, for example, is used as the audio output device 13, and the speaker is provided in each of the elevator cage and the elevator boarding / alighting area. The audio output device 13 outputs (broadcasts) the above audio information to, for example, a user.

Next, the opening / closing operation of the elevator door opening / closing device according to this embodiment will be described. First, in normal use in which the foreign matter 10 is not mixed in the sill groove 7, as shown in FIGS. 1 and 2, since the elevator door 2, the movable hanger rail 30, and the like have their own weight, the elastic member 43 is present. The lower surface of the movable hanger rail 30 and the stopper member 42 abut against the elastic force of the. In this state, the detection switch element 14 is not activated.

However, as shown in FIGS. 3 and 4, when the elevator door 2 is closed while the foreign matter 10 is inadvertently mixed into the threshold groove 7, the door opening / closing drive device 1 is used to drive the elevator. The door 2 moves and the door leg 8 of the elevator door 2 collides with the foreign matter 10. FIG. 4 shows a state in which the foreign matter 10 is mixed inside the threshold groove 7. At this time, when the force for pressing the elevator door 2 with the foreign matter 10 is larger than the driving force of the door opening / closing drive device 1, the elevator door 2 gradually tilts in the closing direction, and the one from the movable hanger rail 30 ( The hanger roller 51 on the left side in FIG. 4 rises.
Furthermore, the up-thrust roller 52 incorporated in the hanger assembly 5 together with the hanger roller 51 that has lifted up.
Pushes up the movable hanger rail 30. By pushing up the movable hanger rail 30, the other end of the movable hanger rail 30 comes into contact with the detection switch element 14 to activate the detection switch element 14. In the detection switch element 14, a detection signal indicating the presence of the foreign matter 10 is output to the drive control device 15 and the sound generation device 12, respectively. In the drive control device 15, when the detection signal is input, a drive force increasing signal for increasing the drive force within a range where safety problems do not occur is output to the door opening / closing drive device 1. In the door opening / closing drive device 1, the elevator door 2 can be moved by the driving force that is increased so that the foreign matter 10 can be overcome.

On the other hand, when the detection signal is input to the voice generation device 12, the voice information prepared in advance is output to the voice output device 13. In the audio output device 13, the output audio information is broadcast to the user, and cooperation of the user is required.

Since the opening operation of the elevator door 2 is the same as the closing operation, its explanation is omitted.

Example 2. FIG. 5 is a configuration diagram showing a main part of an elevator door opening / closing device according to a second embodiment of the present invention. Figure 5
As shown in FIG. 3, in the elevator door opening / closing device of this embodiment, the foreign matter detecting means is provided with the detection switch element 1 provided below the fixed hanger rail 3 and the hanger assembly 5.
4 is provided. Similar to the elevator door opening / closing device shown in FIGS. 10 to 12, both ends of the fixed hanger rail 3 are fixed via rail guides 4, respectively. The detection switch elements 14 are arranged on the respective hanger assemblies 5 on the right side and the left side in the drawing, and each detection switch element 14 has a slight gap from the lower surface of the fixed hanger rail 3 and a side portion of the up thrust roller 52. Is installed in.

FIG. 6 shows a state in which the foreign matter 10 is mixed inside the threshold groove 7. Elevator door 2 caused by foreign material 10
When the up thrust roller 52 comes into contact with the lower surface of the fixed hanger rail 3 when tilted, the detection switch element 14
Contacts the lower surface of the fixed hanger rail 3.

In the elevator door opening / closing device configured as described above, when the detection switch element 14 outputs a detection signal due to the mixing of the foreign matter 10, as in the elevator door opening / closing device according to the first embodiment. The driving force for the opening / closing operation of the elevator door 2 is increased by the door opening / closing driving force increasing means based on the detection signal. On the other hand, the voice information is broadcast to the user by the voice generation and output means.

Example 3. FIG. 7 is a configuration diagram showing a main part of an elevator door opening / closing device according to a third embodiment of the present invention. Figure 7
As shown in FIG. 3, the elevator door opening / closing apparatus of this embodiment includes a fixed type hanger rail 3, a photoelectric beam generator 19, and a photoelectric beam receiver 20.
The photoelectric beam generator 19 is arranged above one rail guide 4 for fixing the fixed hanger rail 3. The photoelectric beam generator 19 outputs a photoelectric beam 19B at a position slightly higher than the hanger roller 51 and in parallel to the fixed hanger rail 3 in a state where the fixed hanger rail 3 and the hanger roller 51 are in contact with each other. it can.
The photoelectric beam receiver 20 is arranged above the other rail guide 4 for fixing the fixed hanger rail 3. The photoelectric beam receiver 20 receives the photoelectric beam 19B output from the photoelectric beam generator 19. As shown in FIG.
The photoelectric beam receiver 20 outputs a detection signal when the input of the photoelectric beam 19B is blocked by the hanger roller 51 lifted from the fixed hanger rail 3 due to the foreign matter 10.

In the elevator door opening / closing device configured as described above, as in the elevator door opening / closing devices according to the first and second embodiments, the photoelectric beam receiver 20 causes the foreign matter 10 to enter the photoelectric beam receiver 20. When the detection signal is output,
Based on the detection signal, the door opening / closing driving force increasing means increases the driving force of the opening / closing operation of the elevator door 2. On the other hand, the voice information is broadcast to the user by the voice generation and output means.

Example 4. FIG. 8 is a configuration diagram showing a main part of an elevator door opening / closing device according to a fourth embodiment of the present invention. FIG.
As shown in FIG. 3, in the elevator door opening / closing device of the present embodiment, the foreign matter detecting means has the detection switch element 2 arranged above the fixed hanger rail 3 and the hanger assembly 5.
1 is provided. The detection switch elements 21 are arranged on the right and left hanger assemblies 5, respectively, and the respective detection switch elements 21 are arranged on the side of the hanger roller 51.
Usually, the detection switch element 21 is in contact with the upper surface of the fixed hanger rail 3.

FIG. 9 shows a state in which the foreign matter 10 is mixed inside the threshold groove 7. Elevator door 2 caused by foreign material 10
When the hanger roller 51 is separated from the upper surface of the fixed type hanger rail 3 when is tilted, the detection switch element 21 outputs a detection signal.

In the elevator door opening / closing device configured as described above, similarly to the elevator door opening / closing device according to the first embodiment, when the detection switch element 21 outputs a detection signal due to the inclusion of the foreign matter 10. The driving force for the opening / closing operation of the elevator door 2 is increased by the door opening / closing driving force increasing means based on the detection signal. On the other hand, the voice information is broadcast to the user by the voice generation and output means.

The present invention is not limited to the above embodiment.

[0035]

EFFECTS OF THE INVENTION First of all, according to the present invention, the opening and closing operation of the elevator door can be surely executed even if a foreign matter is mixed in the sill groove when there is no particular problem in safety, and the operation of the elevator is abruptly stopped. It is possible to provide an elevator door opening / closing device that can prevent the above. Secondly, when the user can safely and easily remove the foreign matter mixed in the threshold, the user can be notified of that fact, and the elevator operation can be prevented from being stopped unexpectedly and the failure of the elevator can be reduced. An elevator door opening / closing device that can be provided can be provided.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an elevator door opening / closing device according to a first embodiment of the present invention at a normal time.

FIG. 2 is an enlarged cross-sectional view of a main part of the elevator door opening / closing device in a normal state.

FIG. 3 is an enlarged cross-sectional view of a main part when the elevator door opening / closing device is abnormal.

FIG. 4 is a configuration diagram when the elevator door opening / closing device is in an abnormal state.

FIG. 5 is a configuration diagram of an elevator door opening / closing device according to a second embodiment of the present invention at a normal time.

FIG. 6 is a configuration diagram when the elevator door opening / closing device is in an abnormal state.

FIG. 7 is a configuration diagram of an elevator door opening / closing device according to a third embodiment of the present invention when an abnormality occurs.

FIG. 8 is a configuration diagram of an elevator door opening / closing device according to a fourth embodiment of the present invention at a normal time.

FIG. 9 is a configuration diagram when the elevator door opening / closing device is in an abnormal state.

FIG. 10 is a configuration diagram of an elevator door opening / closing device according to a conventional technique at a normal time.

FIG. 11 is a configuration diagram when the elevator door opening / closing device is in an abnormal state.

FIG. 12 is a configuration diagram when the elevator door opening / closing device is in an abnormal state.

[Explanation of symbols]

1 Door Opening / Closing Drive Device, 2 Elevator Door, 3,30 Hanger Rail, 4,40 Rail Guide, 5 Hanger Assembly, 7 Sill Groove, 8 Door Leg, 10 Foreign Object, 11 Machine Room Control Panel, 12 Sound Generator, 13 Audio output device, 14, 21 detection switch element, 15 drive control device, 19 photoelectric beam generator, 19B photoelectric beam, 2
0 photoelectric beam receiver, 31 rotating shaft, 32 movable fixed shaft, 41 movable elongated hole, 42 stopper member, 43 elastic member, 51 hanger roller, 52 up thrust roller.

Claims (6)

[Claims] 1. An elevator cage or an elevator door installed at an elevator landing is supported by a hanger assembly including a hanger roller rolling on a hanger rail and an up-thrust roller for preventing the hanger roller from coming off. An elevator door opening / closing device in which the lower portion is guided in the opening / closing direction in a sill groove and the elevator door opens / closes along a hanger rail and a sill groove by a door opening / closing drive, and detects the presence of foreign matter mixed in the sill groove. And a door opening / closing driving force enhancing means for outputting to the door opening / closing drive device an enhancement signal for increasing the driving force of the opening / closing operation to the extent that the foreign matter can be overcome based on the result detected by the foreign matter detecting means. An elevator door opening / closing device comprising: 2. An elevator cage or an elevator door installed at an elevator landing is supported by a hanger assembly including a hanger roller rolling on a hanger rail and an up-thrust roller for preventing disengagement of the hanger roller. An elevator door opening / closing device in which the lower portion is guided in the opening / closing direction in a sill groove and the elevator door opens / closes along a hanger rail and a sill groove by a door opening / closing drive, and detects the presence of foreign matter mixed in the sill groove. An elevator door opening / closing device, comprising: a foreign matter detecting means for controlling the presence of the foreign matter; and a voice generating and outputting means for notifying the presence of the foreign matter by voice based on the result detected by the foreign matter detecting means. 3. The elevator door opening / closing apparatus according to claim 1 or 2, wherein the foreign matter detecting means has a hanger assembly when one end is a rotation center and the other end is when the elevator door rides a foreign matter. A movable hanger rail that is pushed up via the up-thrust roller, and a detection switch element that detects the presence of the foreign matter when abutting against the other end of the pushed up movable hanger rail. Elevator door opening and closing device. 4. The elevator door opening / closing device according to claim 1 or 2, wherein the foreign matter detecting unit is configured to move at the same time as the up thrust roller of the hanger assembly or when the elevator door rides a foreign matter. An elevator door opening / closing device comprising a detection switch element for detecting the presence of the foreign matter when the hanger rail is brought into contact with the hanger rail before the thrust roller. 5. The elevator door opening / closing device according to claim 1 or 2, wherein the foreign matter detecting means is configured to mount a foreign matter on the elevator door at a position slightly higher than a hanger roller of the hanger assembly. A photoelectric beam generator installed at one end of the hanger rail at a position where the hanger roller blocks the beam, and a photoelectric beam receiver installed at the other end of the hanger rail for receiving the beam output from the photoelectric beam generator. An elevator door opening / closing apparatus comprising: and detecting the presence of the foreign matter when the beam output from the photoelectric beam generator is blocked by a hanger roller. 6. The elevator door opening / closing device according to claim 1 or 2, wherein the foreign matter detecting means separates a hanger roller of a hanger assembly from a hanger rail when the elevator door rides a foreign matter. An elevator door opening / closing device comprising a detection switch element for detecting the presence of the foreign matter when the elevator door opens.