JP2015151224A - Door device of elevator and elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the displacement of a safety shoe in a direction orthogonal to a door opening/closing direction of an elevator.SOLUTION: A door device of an elevator comprises: a safety shoe which is disposed at an opening of an elevator device, provided so as to protrude to a front edge of a door moving horizontally, displaced upward and in a direction orthogonal to a door opening/closing direction while retreating when the safety shoe comes into contact with an obstacle; a detection part for detecting the displacement of the safety shoe, which is disposed at the upper outer side of the safety shoe and formed of a light projector for projecting a light beam horizontally along the door opening/closing direction and a light receptor for receiving the light beam projected from the light projector; and a control part for controlling the opening and closing of the door in response to a detection result of the detection part. The safety shoe is provided with an extension part and a penetration hole through which the light beam projected horizontally from the light projector penetrates. The detection part detects that the safety shoe is in contact with the obstacle when the light beam projected from the light projector is not received by the light receptor.

Description

  The present invention relates to an elevator door device and an elevator device, and is suitably applied to an elevator door device and an elevator device that safely close the door.

  The elevator is provided with a door safety device for preventing an obstacle from being caught in the door when the door provided at the opening, that is, the doorway is closed. The door safety device is provided with a safety shoe that protrudes from the front edge of the door that moves in the horizontal direction and moves backward upon contact with an obstacle.

  For example, Patent Document 1 discloses a technique for detecting the backward movement of a safety shoe. The elevator door device disclosed in Patent Document 1 includes a first detection device that mechanically detects that the safety shoe has been retracted by a predetermined amount in the door opening direction, and a safety shoe has been retracted by a predetermined amount in the door opening direction. When a detection signal is issued during the closing operation of the door from at least one of the plurality of second detection devices to be detected in a non-contact manner and the first detection device and the plurality of second detection devices, And a control device that converts a door closing operation by the door opening and closing device into an opening operation.

  In general, a lead wire is connected between the detection unit and the control device in the elevator door device. However, when the door is opened, the lead wire may be loosened and tangled with other devices. It was. As a method for solving this, for example, Patent Document 2 is cited. In Patent Document 2, a detecting means is disposed on the door device of the elevator, outside the upper part of the safety shoe, and projects a light beam in a horizontal direction along the door opening and closing direction. It is composed of a light receiving body that receives the emitted light beam, and the safety shoe has a structure that moves upward while moving backward by contact with an obstacle. Then, when the safety shoe comes into contact with an obstacle, the safety shoe moves upward along with the backward movement, and the control means detects the backward movement of the safety shoe by blocking the light flux by its upper end.

JP 2001-48452 A JP 2010-159116 A

  By the way, as for the use situation of the elevator, for example, a passenger trying to get into the car with the door not fully open, or a passenger trying to get off from the car to the landing hits the safety shoe, and the safety shoe is orthogonal to the door opening and closing direction May be displaced in the direction of In the method described in Patent Document 2 described above, when the safety shoe comes into contact with an obstacle and moves backward, it is detected that the obstacle is at the entrance. However, the safety shoe is generally protruded and installed on the front edge of the door via a link mechanism, and has a structure that allows displacement in a direction orthogonal to the door opening / closing direction. There is a problem that the displacement of the safety shoe in the direction orthogonal to the door opening / closing direction cannot be detected, and the obstacle at the entrance / exit of the elevator cannot be detected accurately.

  The present invention has been made in consideration of the above points, and intends to propose an elevator door device and an elevator device capable of detecting the displacement of the safety shoe in a direction orthogonal to the door opening / closing direction of the elevator. It is.

  In order to solve such a problem, in the present invention, the upper and doors are retracted while being retracted when they come into contact with an obstacle, and are projected from the front edge of the door that is disposed in the opening of the elevator apparatus and moves in the horizontal direction. A safety shoe that is displaced in a direction orthogonal to the opening and closing direction, a light projecting body that is disposed outside the upper portion of the safety shoe, and projects a light beam in a horizontal direction along the door opening and closing direction; and A detector that receives the projected luminous flux and includes a detector that detects the displacement of the safety shoe; and a controller that controls the opening and closing of the door according to the detection result of the detector; The safety shoe is provided with an extending portion that extends to the upper end of the safety shoe, and a through hole that is provided in the extending portion and through which a light beam projected in the horizontal direction from the light projecting body passes. And said Provided is an elevator door device characterized in that the exit portion detects that the safety shoe has come into contact with an obstacle when the light beam projected from the light projecting body is not received by the light receiving body. .

  According to such a configuration, the detection unit is disposed outside the upper portion of the safety shoe, and projects the light beam projected in the horizontal direction along the door opening and closing direction and the light beam projected from the light projecting body. It is formed from a photoreceptor that receives light. The safety shoe is structured to be able to be displaced upward while retreating by contact with an obstacle, and to be displaced in a direction perpendicular to the door opening / closing direction, and the upper end of the safety shoe is extended and extended. The installation part is normally provided with a through-hole through which the light beam passes. Then, when the light flux is displaced from the through hole and blocked, the detection unit detects that the safety shoe has come into contact with the obstacle, and the upward displacement of the safety shoe due to the contact with the obstacle and the door opening / closing direction Each of the displacements in the orthogonal direction can be detected. As a result, it is possible to detect obstacles with high accuracy at the entrance and exit of the elevator and improve the safety of the elevator. Further, only the detection unit can detect the upward displacement of the safety shoe and the displacement in the direction orthogonal to the door opening / closing direction. Accordingly, it is possible to detect an obstacle with high accuracy without causing an increase in cost.

  According to the present invention, it is possible to detect the displacement of the safety shoe in a direction orthogonal to the door opening / closing direction of the elevator, detect an obstacle with high accuracy, and more safely close the door.

It is sectional drawing which shows the outline of the elevator apparatus which concerns on one Embodiment of this invention. It is a front view of the door apparatus concerning the embodiment. It is a perspective view of the extension part of the safety shoe concerning the embodiment.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  First, with reference to FIG. 1, the outline of the elevator apparatus concerning this Embodiment is demonstrated. As shown in FIG. 1, the elevator apparatus 100 includes a hoistway 110, a car 101 and a counterweight 102 that move up and down the hoistway 110, a rope 103 that holds the car 101 and the counterweight 102, and a rope 103. Is provided with a hoisting machine 104 that drives the car 101 and the counterweight 102 in the vertical direction of the hoistway 110.

  Further, a sheave 105 is attached to the hoisting machine 104, and the rotational torque of the sheave 105 is transmitted to the rope 103 by the frictional force generated between the rope 103 and the sheave 105, and is balanced with the car 101 via the rope 103. The weights 102 are raised and lowered opposite to each other.

  Next, with reference to FIG. 2, the structure of the door apparatus 50 of the elevator apparatus 100 is demonstrated. Door device 50 is provided at an opening (not shown) of car 101 of elevator device 100. The door device 50 includes a rail frame 1 disposed at an upper portion of the opening, a door rail 2 extending on the rail frame 1, a door hanger 4 having a guide roller 3 that rolls on the door rail 2, and the door hanger 4. A door 5 that is supported by the door rail 2 and moves in the horizontal direction at the opening, and a threshold 7 that guides the opening and closing of the door 5 through a door shoe 6 that extends below the opening and is provided at the lower end of the door 5. And a control unit (not shown) for controlling the opening and closing of the door 5.

  In addition, as a safety device of the door device 50, a safety shoe 9 and a detection unit 10 that detects the displacement of the safety shoe 9 are provided. The safety shoe 9 is protruded from the front edge of the door 5 via a link mechanism 8. The safety shoe 9 can be displaced upward while retreating by contacting with an obstacle, and can also be displaced in a direction perpendicular to the door opening / closing direction. Note that a stopper 11 is provided in the vicinity of the link mechanism 8, and the protruding amount of the safety shoe 9 at the front edge of the door 5 is limited.

  The detection unit 10 is disposed outside the upper portion of the safety shoe 9, for example, on the rail frame 1. The detection unit 10 includes a light projecting body 10a that projects a light beam in the horizontal direction along the opening / closing direction of the door 5, and a light receiving body 10b that receives the light beam projected from the light projecting body 10a.

  As shown in FIG. 3, the safety shoe 9 is provided with an extending portion 9a having an upper end extending and a through hole 9b provided in the extending portion 9a. The light beam projected from the light projecting body 10a normally passes through the through hole 9b. Then, when the light beam projected from the light projecting body 10a is displaced from the through hole 9b and blocked, the detection unit 10 detects that the safety shoe 9 has come into contact with the obstacle.

  In the present embodiment, when the door is normally opened and closed, the light beam projected from the light projecting body 10 a in the horizontal direction along the opening and closing direction of the door 5 is applied to the extending portion 9 a of the safety shoe 9 at the upper part of the door 5. The light passes through the formed through-hole 9b and is received by the photoreceptor 10b. At this time, the safety shoe 9 is in a state in which the link mechanism 8 contacts the stopper 11 and the safety shoe 9 protrudes from the front edge of the door 5 by a predetermined amount.

  For example, when the door 5 is closed, a passenger may hit the safety shoe 9 by trying to get into the car without the door 5 being fully open, or from the car to the landing. is there. In this case, the safety shoe 9 that hits the passenger is displaced in a direction orthogonal to the door opening / closing direction. When the safety shoe 9 is displaced in a direction perpendicular to the door opening / closing direction, the light beam projected from the light projecting body 10 a is displaced from the through hole 9 b and is blocked by the extending portion 9 a of the safety shoe 9. Thereby, the detection unit 10 detects that the safety shoe 9 has come into contact with the obstacle, and transmits a detection signal to the control unit. The control unit that has received the detection signal indicating that the safety shoe 9 has come into contact controls the door 5 that is being closed to open.

  In addition, for example, when the door 5 is closed, the passenger's luggage may come into contact with the safety shoe 9 and the safety shoe 9 may move backward and move upward. Also in this case, the light beam projected from the light projecting body 10 a is displaced from the through hole 9 b and is blocked by the extending portion 9 a of the safety shoe 9. Thereby, the detection unit 10 detects that the safety shoe 9 has come into contact with the obstacle, and transmits a detection signal to the control unit. The control unit that has received the detection signal indicating that the safety shoe 9 has come into contact controls the door 5 that is being closed to open.

  According to the present embodiment, the detection unit 10 is disposed outside the upper portion of the safety shoe 9 and projects a light beam in the horizontal direction along the opening / closing direction of the door 5, and the light projecting body 10a. It is formed from a photoreceptor 10b that receives the light beam projected from 10a. The safety shoe 9 has a structure that can be displaced upward while retreating by contact with an obstacle, and can be displaced in a direction perpendicular to the door opening / closing direction. The upper end of the safety shoe 9 is extended, and the extension The installation portion 9a is provided with a through-hole 9b through which the light beam normally passes.

  When the light beam is displaced from the through-hole 9b and blocked, the detection unit 10 detects that the safety shoe 9 has come into contact with the obstacle, and the upward displacement of the safety shoe 9 due to the contact with the obstacle, and Each displacement in a direction perpendicular to the door opening / closing direction can be detected. As a result, it is possible to detect obstacles with high accuracy at the entrance and exit of the elevator and improve the safety of the elevator.

  Further, only the detection unit 10 can detect the upward displacement of the safety shoe 9 and the displacement in the direction orthogonal to the door opening / closing direction. Accordingly, it is possible to detect an obstacle with high accuracy without causing an increase in cost.

  In the above-described embodiment, the detection unit 10 is disposed outside the upper portion of the safety shoe 9 and projects a light beam in the horizontal direction along the opening / closing direction of the door 5, and the light projection Although the light receiver 10b receives the light beam projected from the body 10a, the present invention is not limited to this example. For example, the detection unit 10 may be further provided with a sensor provided in the link mechanism 8 or another sensor to further improve the accuracy of obstacle detection.

DESCRIPTION OF SYMBOLS 1 Rail frame 2 Door rail 3 Guide roller 4 Door hanger 5 Door 6 Door shoe 7 Sill 8 Link mechanism 9 Safety shoe 9a Extension part 9b Through-hole 10 Detection part 10a Emitter 10b Photoreceptor 11 Stopper 100 Elevator unit 110 Carriage 101 102 Balance weight 103 Rope 104 Hoisting machine 105 Sheave

Claims (4)

A safety shoe disposed at the front edge of a door that is disposed in the opening of the elevator apparatus and moves in the horizontal direction, and moves in a direction perpendicular to the door opening / closing direction while retreating when contacting an obstacle; and ,
Formed from a light emitter that is disposed outside the upper portion of the safety shoe and projects a light beam in a horizontal direction along the door opening and closing direction, and a light receiver that receives the light beam projected from the light projector A detecting unit for detecting the displacement of the safety shoe;
A control unit that controls opening and closing of the door according to a detection result of the detection unit;
With
The safety shoe is provided with an extending portion that extends to the upper end of the safety shoe, and a through hole that is provided in the extending portion and through which a light beam projected in the horizontal direction from the light projecting body passes. And
The said detection part detects that the safety shoe contacted the obstruction when the light beam projected from the said light projecting body is not received by the said light receiving body. The elevator door apparatus characterized by the above-mentioned. The detector is
When the light flux projected in the horizontal direction from the light projecting member is normally blocked from the through hole without shifting through the through hole, the safety shoe The elevator door device according to claim 1, wherein the door device is detected to be in contact with an obstacle. The controller is
2. The elevator door according to claim 1, wherein when the door is closed, the door is opened when the detection unit detects that the safety shoe has come into contact with an obstacle. 3. apparatus. In an elevator apparatus provided with a car that moves up and down in the hoistway, and provided with a door device at the opening of the car,
The door device is
A safety shoe disposed at the opening of the elevator apparatus and projecting at the front edge of the door that moves in the horizontal direction, and when it comes in contact with an obstacle, moves backward and moves in a direction perpendicular to the door opening / closing direction. When,
Formed from a light emitter that is disposed outside the upper portion of the safety shoe and projects a light beam in a horizontal direction along the door opening and closing direction, and a light receiver that receives the light beam projected from the light projector A detecting unit for detecting the displacement of the safety shoe;
A control unit that controls opening and closing of the door according to a detection result of the detection unit;
With
The safety shoe is provided with an extending portion that extends to the upper end of the safety shoe, and a through hole that is provided in the extending portion and through which a light beam projected in the horizontal direction from the light projecting body passes. And
The said detection part detects that a safety shoe has contacted the obstruction when the light beam projected from the said light projecting body is not received by the said light receiving body. The elevator apparatus characterized by the above-mentioned.

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