JP2008169009A - Elevator device and elevator system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an elevator device capable of securely preventing traveling of a car with a string-shaped object such as a dog leash and a cord of an electric vacuum cleaner jammed in an elevator door. <P>SOLUTION: The elevator device is provided with doors 2, 3 for horizontally opening/closing an elevator entrance; a light projecting means 11 provided in one of upper and lower parts in the vicinity of a doorstop part at the time of full closing of the doors 2, 3 and outputting vertical light in the vicinity of the full closing position of the doors 2, 3; a light receiving means 10 provided in the other of the upper and lower parts in the vicinity of the doorstop part at the time of full closing of the doors 2, 3 and receiving the vertical light from the light projecting means 11; a jamming detection device operated in the vicinity of the full closing position of the doors 2, 3 and detecting that a string-shaped object is jammed in a clearance of the doorstop part when light from the light projecting means 11 is shielded. When the jamming detection device detects jamming of the string-shaped object, an elevator is stopped. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator apparatus that prevents a car from running while a string-like object such as a dog's string or rope, or a cord of an electric vacuum cleaner is sandwiched between elevator doors.

If a dog's string or rope is caught in the elevator door and one side is separated into the car and the other side is divided into the landing, there is a risk that an accident will occur if the car runs as it is. For example, if the elevator car begins to move when a dog suddenly jumps out of the car, the passenger may be injured by the straps and ropes he had. There is also the possibility that the dog's neck will be squeezed by pulling the string or rope by the movement of the cage. Moreover, if the elevator car starts to move with the cord of the vacuum cleaner sandwiched between the elevator doors, the cord of the vacuum cleaner may suddenly be pulled, causing an unexpected accident.
Normally, a safety door edge (safety shoe) is attached between the doors, so that it is possible to detect that an object is caught between the doors. In some cases, it could not be detected. In addition, there is a gap between the threshold and the lower end of the door, and a string-like object may enter the gap, but it cannot be detected by the safety door edge.

  As a conventional technique, when the door provided in the elevator car is in the fully closed position, there is a string-like object held in the gap between the doors or the gap between the doors and the door-to-door pillars. An elevator apparatus comprising a detector that detects relative movement as the car is raised and lowered, and an emergency stop control circuit that issues a command to stop raising and lowering the car when movement of the string-like object is detected It is known (see, for example, Patent Document 1).

  Further, as another conventional technique, a micro switch, a detection piece that is connected to the micro switch and extended to the car sill, and a roller are provided at the lower end portion of the car door, and a roller provided at the front end of the detection piece, An elevator door safety device that detects only a string on a car sill is known (see, for example, Patent Document 2).

  Furthermore, as another conventional technique, an elevator door safety device is known in which a roller running in a sill groove is rotatably fixed to a lower end of a safety shoe (see, for example, Patent Document 3).

JP 2005-200144 A JP 2005-104654 A JP-A-5-132276

  In the prior art described in Patent Document 1, since the configuration cannot be detected unless the elevator moves and the string-like object moves, there is a problem that the elevator moves once, which leads to danger. Moreover, in the prior art described in Patent Document 2, there is a problem that detection is impossible when a string is caught in the middle of a car door. Furthermore, in the prior art described in Patent Document 3, the intermediate safety shoe remains the same as that of the prior art, and the addition of a large mechanical detection device is structurally difficult, causing a new failure, and the mechanical detection device. However, there is a problem that a soft string may not be detected.

  The present invention has been made to solve the above-described problems. For example, a car is used while a string-like object such as a dog string or rope or a cord of an electric vacuum cleaner is sandwiched between elevator doors. An elevator apparatus that can reliably prevent traveling is provided.

  In the elevator apparatus according to the present invention, the elevator apparatus is provided on one of the door that opens and closes the elevator door in the horizontal direction and the upper and lower portions near the door contact portion when the door is fully closed. The light projecting means for outputting, the light receiving means for receiving the light in the vertical direction from the light projecting means, and the light receiving means for receiving light in the vertical direction from the light projecting means when the door is fully closed. And a pinch detection device that detects that the string-like object is pinched in the gap of the door stop when the light from the light projecting means is blocked, and the pinch detection device detects pinching of the string-like object When the elevator stops.

  A door that opens and closes the elevator doorway in the horizontal direction, and a light projecting means that is provided on one of the upper and lower portions near the door contact portion when the door is fully closed, and outputs vertical light near the door fully closed; A light receiving means for receiving light in the vertical direction from the light projecting means, and a light receiving means provided at the door contact portion of the door when the door is fully closed. A door cushioning member having a concave groove for allowing light from the light means to pass in the vertical direction, and when the light from the light projecting means is blocked by operating near the door fully closed, And a pinch detection device that detects that the string-like object has been pinched. When the pinch detection device detects pinching of the string-like object, the elevator is stopped.

  Further, the door is of the center opening type, and the light receiving means is attached to the central portion of the door rail in the horizontal direction.

  The light projecting means is attached in a groove in the center of the door sill.

  Further, the door is of a single opening type, and the light receiving means is attached to the door rail in the horizontal direction near the door end.

  Further, the light projecting means is attached in a groove near the door end side of the door sill.

  Further, the light projecting part of the light projecting means or the light receiving part of the light receiving means provided in the lower part of the door is normally shielded, and the window of the light projecting part or the light receiving part is opened when the door is fully closed. It is.

  Further, the door cushioning member is made of a transparent material, and the light from the light projecting means is caused to emit light through the transparent door cushioning member to display the pinch detection status.

  Moreover, in the elevator system according to the present invention, the pinch detection device automatically performs self-diagnosis in a quiet time zone such as at night, and if there is an abnormality in the pinch detection device, notifies the maintenance center.

  The elevator device repair method according to the present invention is a method for repairing an existing elevator device including a door that opens and closes the elevator doorway in the horizontal direction. Provided on one side, the light projecting means for outputting light in the vertical direction near the door fully closed, and the other on the upper and lower portions near the door contact portion when the door is fully closed, and in the vertical direction from the light projecting means A light receiving means for receiving light, and a pinch detection device for detecting that a string-like object has been pinched in the gap between the door contact portions when the light from the light projecting means is blocked by operating near the fully closed door. And a function for stopping the elevator when the pinch detection device detects pinching of the string-like object is added.

  Further, it is a method of repairing an existing elevator apparatus having a door that opens and closes the elevator doorway in the horizontal direction, and is provided at one of the upper and lower portions near the door contact portion when the door is fully closed, and vertically A light projecting means for outputting light in the direction, a light receiving means for receiving light in the vertical direction from the light projecting means provided on the other upper and lower portions near the door contact portion when the door is fully closed, and the door door And a door stop buffer member having a recessed groove for allowing light from the light projecting means to pass in the vertical direction when the door is fully closed, and operating near the door fully closed to block light from the light projecting means. And a pinch detection device that detects that the string-like object has been pinched in the gap between the door stop portions, and when the pinch detection device detects pinching of the string-like object, the elevator is stopped. A function is added.

  According to this invention, for example, a dog-like string connecting a dog or a cord of a vacuum cleaner is sandwiched between doors, and the dog and its owner, the vacuum cleaner and its owner are in the car and the landing. Even when the doors are separated, a string-like object can be reliably detected in the vicinity of the fully closed door, so that it is possible to prevent a suspended suspension accident and a property damage accident.

Embodiment 1 FIG.
FIG. 1 is a schematic configuration diagram showing an example of an accident in an elevator apparatus as a premise of the present invention, FIG. 2 is a schematic configuration diagram showing another example of an accident in an elevator apparatus as a premise of the present invention, and FIG. FIG. 4 is a central longitudinal sectional view showing a dog string detection sensor of a car door of the elevator apparatus according to Embodiment 1 of the present invention, and FIG. FIG. 6 is a partial front view showing a state of a light projecting portion when the door of the elevator apparatus according to Embodiment 1 of the present invention is opened. 7 is a partial front view showing a state of the light projecting portion when the door is fully closed in the elevator apparatus according to Embodiment 1 of the present invention, and FIG. 8 is a diagram illustrating a state where the string-like object of the elevator apparatus according to Embodiment 1 of the present invention is sandwiched. FIG. 9 is a circuit configuration diagram showing the circuit configuration of the dog string detection sensor of the elevator apparatus according to Embodiment 1 of the present invention, and FIG. 10 shows this circuit configuration diagram. It is a flowchart for demonstrating the diagnostic operation | movement of the dog string detection sensor of the elevator apparatus in Embodiment 1 of invention.

1 and 2, 1 is a landing door, 2 is a left car door, 3 is a right car door, 4 is an elevator car, and 5 is a main rope. FIG. 1 shows a state in which a dog strap is wrapped around the hand, the owner is in the car, the dog jumps out to the landing, and the elevator car 4 starts moving. 3 shows an example of an accident in which the owner who was holding the dog's string is injured when the elevator 3 is closed and the elevator travels as it is. FIG. 2 shows a state in which only the dog has entered the car 4 and the car 4 has started moving with the dog string attached, and the left and right doors 2 and 3 are closed while only the dog is in the car 4. It shows examples of accidents where dogs are suspended in the air and the owner who was holding the dog's string is injured by the elevator running.
Previously, it was not common to keep pets such as dogs in condominiums, but recently, the number of condominiums where pets are allowed is increasing, so the number of such accidents increases year by year. There is a tendency.

  3-7, the door hanger case 9 is provided in the upper part of the elevator car 4, and the car door rail 6 is installed in the horizontal direction. The left and right car doors 2 and 3 are opened and closed by moving horizontally on the car door rail 6 by a door hanger 7 and a hanger roller 8 provided at the upper end. A door shoe 13 is provided at the lower ends of the car doors 2 and 3 so as not to slide forward and backward by sliding in a groove of the car sill 12 provided at the lower part of the entrance of the car 4. . The groove of the sill 12 has a depth of 14 mm and a width of 12 mm, and a dog strap sensor light projecting device 11 as a pinch detection device comprising a small sensor is installed in the groove. Reference numeral 10 denotes a light receiving device of a dog string detection sensor as a pinch detection device attached to the horizontal center portion of the car door rail 6, and a light receiving sensor portion 15 is attached vertically downward to the lower end portion of the light receiving device. The car door rail 6 is attached by aligning the optical axis with the light projecting device 11 using screws or the like. The light receiving sensor unit 15 incorporates an infrared light receiving unit 14. Reference numeral 11 denotes a light projecting device for a dog string detection sensor attached to a groove portion in the center of the sill 12 in the horizontal direction. In the light projecting device 11, a micro infrared chip LED 24 is provided so as to emit light upward in the vertical direction. In addition, an ultra-small micro switch 26 is provided in the light projecting device 11. Reference numeral 25 denotes electrical wiring of the light projecting device 11. The ultra-small micro switch 26 closes the contact point before the door is closed, the light receiving device 10 and the light projecting device 11 are turned on, and the dog string detection sensor can detect the string-like object 83 sandwiched between the doors. Become. Normally, after the switch is turned on, infrared rays are emitted and the dog string 83 is detected. If there is no dog string 83, the infrared light receiving unit 14 of the light receiving sensor 15 is turned on to recognize the completion of the door closing. To do. When the dog string 83 is sandwiched, even if it is projected, it cannot be received due to an obstacle such as a string, so that the door can not be completed and the elevator performs the door inversion. In addition, the shape of the door stop portion of the car doors 2 and 3 is required to pass infrared rays in the vertical direction when fully closed, and a concave shape is required, but by changing the shape of the rubber per door as appropriate Since it becomes feasible, even an existing one can be easily repaired by repair work. At the lower ends of the left and right car doors 2 and 3, the handrails 16 and 17 provided so as to enter the grooves of the sill 12 are attached. These handrails 16 and 17 are for preventing the dog string 83 from entering the lower end of the door. If the dog string 83 enters the lower end of the car door, the dog string 83 is moved to the center simultaneously with the door closing by the hand-feeding brackets 16, 17, and the dog composed of the light projecting device 11 and the light receiving device 10. The string detection sensor can detect pinching. Since the light projecting device 11 and the light receiving device 10 are operated in the vicinity of the fully closed door, it is possible to prevent malfunction on the light receiving side due to external influences. The light projecting device 11 is provided with a light projection window 20 for projecting infrared rays from the micro-infrared chip LED 24 vertically upward, and a dustproof shutter 21 having an opening 21a. Normally, as shown in FIG. 6, the projection window 20 is closed by a dust-proof shutter 21 by the urging force of the shutter pressing spring 22, and plays a role of dust-proof. When the door is about to close, the dust-proof shutter 21 is pushed against the urging force of the shutter pushing spring 22 by the lower end vertical portion of the left hand-feeding bracket 16, so that the opening 21a of the dust-proof shutter 21 is shown in FIG. And the projection window 20 overlap, and the projection window 20 is opened. At the same time, the contact of the micro switch 26 is turned on, and power is supplied to the micro infrared chip LED 24 and the infrared light receiving unit 14. The detection of the string-like object such as the dog string 83 can be performed both when it is sandwiched between the doors (see FIG. 5) and when it is sandwiched between the gaps at the lower part of the door (see FIG. 7). FIG. 6 shows a state of the light projecting device 11 when the door is opened. The contact of the microminiature switch 26 is turned off until the bottom vertical portion of the handrail 16 contacts the dustproof shutter 21, and the microminiature infrared chip is turned off. The LED 24 is off, and the dustproof shutter 21 is in a state where the light projection window 20 is closed. FIG. 7 shows the state of the light projecting device 11 when the door is fully closed. The vertical portion of the lower end of the handrail 16 pushes the dust-proof shutter 21, and the contact of the micro switch 26 is turned on. The LED 24 is on, and the dust-proof shutter 21 is in a state where the projection window 20 is open. If there is a dog string 83 between the door stop portions, the way to the light receiving device 10 is blocked, the dog string detection sensor is activated, and the door closing cannot be completed. The light receiving unit 10 and the light projecting unit 11 have a concave groove that allows infrared light to pass between the door contact portions when the left and right car doors 2 and 3 are fully closed when viewed in plan view in FIG. Thus, the dog string detection sensor operates when the door is closed. For example, when the dog string is not sandwiched, the infrared light receiving unit 14 of the light receiving sensor 15 of the light receiving unit 10 is turned on. When the dog string is caught, the light projecting unit 11 is hidden by the left and right doors 2 and 3, and the infrared light receiving unit 14 of the light receiving sensor 15 of the light receiving unit 10 cannot be turned on. For this reason, the door closing signal is not completed, and the car doors 2 and 3 are reversed.

Next, a circuit configuration of a dog string detection sensor as a pinch detection device will be described with reference to FIG.
30 is infrared light at the time of detection of a dog string detection sensor, 31 is a dog string detection sensor circuit part as a pinch detection device, 32 is a dog string detection relay (SW1), 33 is a dog string detection relay contact, and 34 is a gate switch. , 35 is a door opening detection device, and 37 is a door control circuit.
The power supply to the light projecting device 11 of the dog string detection sensor is such that the contact of the micro micro switch 26 is turned on (normally off) when the dustproof shutter 21 operates in the fully closed direction of the door closing, and the micro red The outer chip LED 24 is turned on. When the infrared light 30 from the ultra-small infrared chip LED 24 of the light projecting device 11 is irradiated and the infrared light receiving unit 14 of the light receiving sensor unit 15 of the light receiving device 10 is turned on, the dog string detection relay (SW1) 32 picks up. As a result, the dog string detection relay contact 33 connected in series with the gate switch 34 for detecting the fully closed state of the car doors 2 and 3 is picked up, and an input to the door open detection device 35 is made. If the dog string detection sensor does not operate normally, the gate switch 34 cannot be turned on, and the elevator cannot travel in the same manner.

Next, the operation flow of the diagnostic operation by the dog string detection sensor of the elevator apparatus will be described with reference to FIG.
Diagnosis operation is a mechanism in which the elevator tests the reliability of various elevator equipment during the night time schedule and notifies the reception center of the maintenance company if there is an abnormality. Here, the pinch detection diagnosis operation by the dog string detection sensor will be described. In step S1, the pinch detection diagnosis operation is started. In step S2, it is determined whether or not it is a scheduled time zone in which diagnostic operation is set. If it is the schedule time zone of the diagnostic operation, it is determined whether or not the elevator is stopped and closed (step S3). If it is stopped, the elevator is moved to the lowest floor (step S4). If the user presses the push button during the diagnosis operation, the floor currently being diagnosed is recorded as a diagnosis intermediate floor and temporarily suspended (steps S5 and S6). When there is no user call, the door is opened and closed (steps S5 and S7). In the next step S8, when the door is opened, it is confirmed that the light receiving device 10 of the dog string detection sensor is turned off. When the door is closed, the light receiving device 10 of the dog string detection sensor is turned on. Make sure. If the signal is abnormal in step S8, an abnormality in pinching detection is detected (step S9), and the diagnostic abnormality information is reported to the reception center of the maintenance company (step S10). When the diagnosis by the dog string detection sensor by opening and closing the door on the lowest floor is completed, the vehicle travels to the floor on the first floor (steps S11 and S12), and similarly, the diagnosis when the door is opened and closed by the dog string detection sensor. To diagnose all the floors up to the top floor (steps S11 and S12). Even when a passenger call occurs during the diagnosis, the elevator is moved to the floor where the diagnosis is interrupted (step S4), and the diagnosis of steps S5 to S12 is started again.

Embodiment 2. FIG.
FIG. 11 is a system configuration diagram illustrating an elevator system that abnormally issues diagnostic abnormality information by the dog string detection sensor according to Embodiment 2 of the present invention.
In the second embodiment, the pinch detection diagnostic circuit 70 constituted by a dog string detection sensor is connected to an elevator control circuit 71. If a diagnosis abnormality occurs due to the dog string detection sensor, the communication device 72 causes a telephone call. An abnormality is reported to the communication system 74 of the elevator maintenance company through the line 73. In the communication system 74 of the elevator maintenance company, it is connected to the receiving terminal 76 through the communication device 75. When the abnormality information is received, the nearest maintenance engineer 77 is called to instruct the failure handling. In other words, the self-diagnosis of the pinch detection circuit 70 can be automatically performed by the dog strap detection sensor, and if there is an abnormality in the pinch detection diagnosis circuit 70, the maintenance center can be notified and the maintenance engineer 77 can be dispatched. .

Embodiment 3 FIG.
FIG. 12 is a plan view of a door stop portion showing a state where the string-like object of the elevator apparatus according to Embodiment 3 of the present invention is not pinched and a state where it is pinched.
In order to realize a dog string sensor, a structure that allows infrared rays to pass vertically when the door is closed is necessary. In the third embodiment, the door-to-door buffering is performed so that a concave groove through which infrared rays from the ultra-small infrared chip LED 24 of the light projecting device 11 pass is formed in the door-to-door portions of the left and right car doors 2 and 3. The members 80 and 81 are attached asymmetrically. Thereby, since the door stop buffer members 80 and 81 are provided near the door fully closed of the car door, the infrared passage used for detection can be easily configured by changing the door structure or the door stop member. Even an existing elevator device can be easily modified by a short-term renovation work.

Embodiment 4 FIG.
FIG. 13: is a top view of the door stop part which shows the state in which the string-like object of the elevator apparatus in Embodiment 4 of this invention is not pinched, and the state pinched.
In the third embodiment, the door cushioning members 80 and 81 are mounted asymmetrically in the left-right direction. However, in this fourth embodiment, the door cushioning members 84 and 85 are bilaterally symmetrical and have a concave shape that allows infrared light to pass through the center. A semicircular groove is formed. As a result, even in an existing elevator apparatus, it is possible to install the dog string sensor very easily.

Embodiment 5. FIG.
FIG. 14 is a partial front view showing a light projecting portion and a door contact state when the door is fully closed in the elevator apparatus according to Embodiment 5 of the present invention.
In the fifth embodiment, the door cushioning members 84 and 85 are made of a transparent material, and the micro infrared chip LED 24 of the light projecting device 11 is also provided with a light emitting LED that emits visible light together with infrared light. By turning on infrared light and visible light simultaneously, visible light from the light emitting LED is emitted from the bottom to the top when the door is closed, and the door cushioning members 84 and 85 emit light. Is possible. That is, in the case of detection, the light emitting LED is turned on at the same time, and the detection status is shown to the passenger through the transparent door cushioning members 84 and 85, so that a warning function can be provided. Moreover, the light-projecting part cleaning brush 216 is attached to the dust-proof shutter 21, and the function of cleaning the light-projecting part every time the door is opened and closed is provided.

Embodiment 6 FIG.
FIG. 15 is a front view showing an overall configuration of a car door of an elevator apparatus according to Embodiment 6 of the present invention, and FIG. 16 is a front view showing a dog string detection sensor of the car door of the elevator apparatus according to Embodiment 6 of the present invention. It is.
In the first to fifth embodiments described above, a so-called center opening type door that opens and closes in the center has been described. However, in this sixth embodiment, the case where the two doors are of a single opening type is applied. An example is shown. In this case, in the first embodiment, the light receiving device 10 of the dog string detection sensor attached to the horizontal center portion of the door rail 6 has the light receiving sensor portion 15 vertically downward toward the door end side of the door rail 6. It is attached. In the first embodiment, the light projection device 11 of the dog string detection sensor attached to the horizontal central groove portion of the sill 12 is attached to the groove portion of the sill 12 near the door end side. . Thereby, even if it is a single door type door, a dog string sensor can be installed, and the same pinch detection can be performed.

It is a schematic block diagram which shows the example of an accident in the elevator apparatus used as the premise of this invention. It is a schematic block diagram which shows the other example of an accident in the elevator apparatus used as the premise of this invention. It is a front view which shows the whole structure of the car door of the elevator apparatus in Embodiment 1 of this invention. It is a center longitudinal cross-sectional view which shows the dog string detection sensor of the door of the cage | basket | car of the elevator apparatus in Embodiment 1 of this invention. It is a front view which shows the dog string detection sensor of the cage door of the elevator apparatus in Embodiment 1 of this invention. It is a partial front view which shows the state of the light projection part at the time of the door opening of the elevator apparatus in Embodiment 1 of this invention. It is a partial front view which shows the state of the light projection part at the time of the door fully closed of the elevator apparatus in Embodiment 1 of this invention. It is a top view of the center door stop part which shows the state in which the string-like object of the elevator apparatus in Embodiment 1 of this invention is not pinched, and the pinched state. It is a circuit block diagram which shows the circuit structure of the dog string detection sensor of the elevator apparatus in Embodiment 1 of this invention. It is a flowchart for demonstrating the diagnostic operation | movement of the dog string detection sensor of the elevator apparatus in Embodiment 1 of this invention. It is a system configuration | structure figure which shows the elevator system which issues abnormally the diagnostic abnormality information by the dog string detection sensor in Embodiment 2 of this invention. It is a top view of the door stop part which shows the state in which the string-like object of the elevator apparatus in Embodiment 3 of this invention is not pinched, and the pinched state. It is a top view of the door stop part which shows the state in which the string-like object of the elevator apparatus in Embodiment 4 of this invention is not pinched, and the pinched state. It is a partial front view which shows the light projection part at the time of the door fully closed of the elevator apparatus in Embodiment 5 of this invention, and the state of a door stop. It is a front view which shows the whole structure of the car door of the elevator apparatus in Embodiment 6 of this invention. It is a front view which shows the dog string detection sensor of the cage door of the elevator apparatus in Embodiment 6 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door 2 Left car door 3 Right car door 4 Elevator car 5 Main rope 6 Car door rail 7 Door hanger 8 Hanger roller 9 Door hanger case 10 Light receiving device 11 Flood light device 12 Car sill 13 Door shoe 14 Infrared Light-receiving unit 15 Light-receiving sensor part 16, 17 Hand feeding bracket 20 Light projection window 21 Dust-proof shutter 21a Opening 216 Light-emitting part cleaning brush 22 Shutter spring
24 Ultra-small infrared chip LED
DESCRIPTION OF SYMBOLS 25 Electrical wiring 26 Ultra-small micro switch 30 Infrared light 31 Dog string sensor circuit part as a pinch detection device 32 Dog string detection relay 33 Dog string detection relay contact 34 Gate switch 35 Door open detection device 70 Pin detection detection circuit 71 Elevator control Circuit 72, 75 Communication device 73 Telephone line 74 Communication system of elevator maintenance company 76 Receiving terminal 77 Maintenance engineer 80, 81, 84, 85 Shock absorber per door

Claims (11)

A door that opens and closes the elevator door horizontally,
A light projecting means that is provided on one of the upper and lower portions near the door contact portion when the door is fully closed, and that outputs light in a vertical direction near the door;
A light receiving means for receiving light in a vertical direction from the light projecting means, provided on the other of the upper and lower portions near the door contact portion when the door is fully closed;
A pinch detection device that detects that a string-like object has been pinched in the gap of the door stop when the light from the light projecting means is blocked by operating near the fully closed door;
An elevator apparatus that stops an elevator when the pinching detection apparatus detects that a string-like object is pinched. A door that opens and closes the elevator door horizontally,
A light projecting means that is provided on one of the upper and lower portions near the door contact portion when the door is fully closed, and that outputs light in a vertical direction near the door;
A light receiving means for receiving light in a vertical direction from the light projecting means, provided on the other of the upper and lower portions near the door contact portion when the door is fully closed;
A door stopper member having a concave groove for allowing light from the light projecting means to pass in a vertical direction when the door is fully closed;
A pinch detection device that detects that a string-like object has been pinched in the gap of the door stop when the light from the light projecting means is blocked by operating near the fully closed door;
An elevator apparatus that stops an elevator when the pinching detection apparatus detects that a string-like object is pinched.   The elevator apparatus according to claim 1 or 2, wherein the door is of a center opening type, and the light receiving means is attached to a central portion of the door rail in the horizontal direction.   4. The elevator apparatus according to claim 3, wherein the light projecting means is installed in a groove in a central portion of the door sill.   The elevator apparatus according to claim 1 or 2, wherein the door is of a single-opening type, and the light receiving means is attached to a door contact side end in the horizontal direction of the door rail.   6. The elevator apparatus according to claim 5, wherein the light projecting means is mounted in a groove near the door end side of the door sill.   The light projecting part of the light projecting means or the light receiving part of the light receiving means provided in the lower part of the door is normally shielded and has a structure in which the window of the light projecting part or the light receiving part is opened when the door is fully closed. The elevator apparatus in any one of Claims 1-6 characterized by the above-mentioned.   3. The elevator apparatus according to claim 2, wherein the door cushioning member is made of a transparent material, and light from the light projecting means is caused to emit light through the transparent door cushioning member to display a pinch detection state. .   9. The pinch detection device automatically performs self-diagnosis in a quiet time such as at night, and if there is an abnormality in the pinch detection device, reports to a maintenance center. The described elevator system. A method for repairing an existing elevator apparatus having a door that opens and closes an elevator doorway in a horizontal direction,
A light projecting means that is provided on one of the upper and lower portions near the door contact portion when the door is fully closed, and that outputs light in a vertical direction near the door;
A light receiving means for receiving light in a vertical direction from the light projecting means, provided on the other of the upper and lower portions near the door contact portion when the door is fully closed;
In addition to providing a pinch detection device that detects that a string-like object has been pinched in the gap of the door stop when the light from the light projecting means is blocked by operating near the fully closed door,
A method for repairing an elevator apparatus, wherein a function for stopping the elevator is added when the pinch detection apparatus detects that a string-like object is pinched. A method for repairing an existing elevator apparatus having a door that opens and closes an elevator doorway in a horizontal direction,
A light projecting means that is provided on one of the upper and lower portions near the door contact portion when the door is fully closed, and that outputs light in a vertical direction near the door;
A light receiving means for receiving light in a vertical direction from the light projecting means, provided at the other of the upper and lower portions in the vicinity of the door contact portion when the door is fully closed;
A door stopper member having a concave groove for allowing light from the light projecting means to pass in a vertical direction when the door is fully closed;
In addition to providing a pinch detection device that detects that a string-like object has been pinched in the gap of the door stop when the light from the light projecting means is blocked by operating near the fully closed door,
A method for repairing an elevator apparatus, wherein a function for stopping the elevator is added when the pinch detection apparatus detects that a string-like object is pinched.

Images