JP2016016923A - Door-opened travel preventing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door-opened travel preventing device which eliminates the need of a control circuit and components provided on a guide rail, and which can prevent an elevator car from travelling with the door opened.SOLUTION: A door-opened travel preventing device 20 which is provided in an elevator including a guide rail 2 installed upright in a hoistway 1, a car frame 3 slidably supported by the guide rail 2 and traveling in the vertical direction, and an elevator car 5 supported by the car frame 3, and which prevents the elevator car 5 from travelling in the state in which a door 6 of the elevator car 5 is opened, is provided on the elevator car 5 side near the moving end of the door 6 of the elevator car 5 during the door opening operation, and moves rotationally with the movement of the door 6 of the elevator car 5 in the moving end direction during the door opening operation. The door-opened travel preventing device is equipped with a rotating body 21 which is pressed to be engaged to a predetermined part, for example, each end part of a door 8 of an elevator hall 7 or each pocket 11 in which the door 8 of the elevator hall 7 is held.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a door-opening travel prevention device for preventing an elevator car from traveling with a door open.

  In general, an elevator has a car frame supported by guide rails installed in a hoistway through guide rollers, guide shoes, and the like, and a car is supported by the car frame. The car frame moves up and down in the vertical direction of the guide rail via a guide roller, a guide shoe and the like. In such an elevator, when the car is landed on a predetermined floor and the door of the car is open, the braking force of the brake of the driving device is reduced, or the control device that controls the traveling of the car When an erroneous command is output, the car may move up and down with the door open.

  A technique for dealing with such a situation is disclosed in Patent Document 1. The prior art disclosed in this Patent Document 1 is a door-opening travel prevention device that prevents a car from traveling while the door of the car is open. This prior art is provided on the passenger car side and can project toward the guide rail side, and is provided on the guide rail side and engages the above-described projecting projecting member to limit the vertical movement of the projecting member. And when the car stops at a predetermined floor and opens the car door, the car-side protruding member protrudes toward the guide rail-side limiting member and engages. .

Utility Model Registration No. 3150564

  The above-described prior art requires a control circuit for operating the protruding member of the door-opening travel prevention device, which tends to increase the manufacturing cost. In addition, it is necessary to provide a protruding member on the car and to provide a restricting member on the guide rail portion corresponding to each floor, which increases the number of parts, which also increases the production cost. In addition, as the number of parts increases, the number of manufacturing steps for incorporation increases, which also tends to increase the manufacturing cost.

  The present invention has been made from the actual situation in the prior art described above, and its purpose is to prevent the car from opening and closing without requiring a control circuit and without requiring parts provided on the guide rail. The object is to provide a door-opening travel prevention device.

  In order to achieve the above object, a door-open travel prevention device according to the present invention includes a guide rail erected in a hoistway, a car frame that is slidably supported by the guide rail and travels in the vertical direction, A door opening travel prevention device provided in an elevator having a car supported by the car frame and preventing the car from running in a state where the car door is open. It is provided on the side of the car near the moving end during the opening operation, rotates with the movement of the door of the car in the direction of the moving end during the opening operation, and is pressed against a predetermined part on the landing side. It features a moving body.

  The door-opening travel prevention device according to the present invention has a control circuit as in the prior art by a rotating body that rotates in accordance with the movement toward the moving end during the opening operation of the car door, that is, by a mechanical component. It is not necessary, and traveling in a state where the door of the car is opened can be prevented. As a result, the present invention can reduce the production cost. Further, the present invention can prevent the car from traveling with the door open without requiring parts provided on the guide rail side. Therefore, according to the present invention, the number of parts can be reduced as compared with the prior art, and the manufacturing cost can be reduced also in this respect. Moreover, the present invention can reduce the number of manufacturing steps at the time of assembly by reducing the number of parts, which contributes to a reduction in manufacturing cost.

It is a side view which shows the principal part structure of the elevator provided with one Embodiment of the door open travel prevention apparatus which concerns on this invention. It is a figure which shows the cross section of the elevator shown in FIG. 1, (A) A figure which shows the state in which the door of a passenger car and a landing door were closed, (B) A figure is a door of a passenger car, and a door of a landing It is a figure which shows the state by which was opened. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the door opening travel prevention apparatus which concerns on this embodiment, (A) A figure shows the state in which the door of a cage and the door of a landing were closed, (B) A figure is a door of a cage. It is a figure which shows the state by which the door of the landing was opened.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a door-opening travel prevention device according to the present invention will be described based on the drawings.

  As shown in FIG. 1, an elevator provided with an embodiment of the door-opening travel prevention device according to the present invention includes a guide rail 2 erected in a hoistway 1, and a guide shoe 3 a provided on the guide rail 2. A car frame 3 that is slidably supported and travels in the vertical direction, and a car 5 that is supported by the floor 4 of the car frame 3. The car 5 includes a door 6 guided by a threshold 9. The landing 7 is provided with a door 8 guided by a threshold 10 and held by a pocket 11 of the landing 7. Each of the door 6 of the car 5 and the door 8 of the landing 7 is composed of a double door, for example.

  As shown in FIG. 3, the door-opening travel prevention device 20 according to the present embodiment that prevents the car 5 from traveling while the door 6 of the car 5 is open, opens the door 6 of the car 5. It is provided on the side of the car 5 near the end of the sill 9 that forms the moving end of the hour, and rotates with the movement of the door 6 of the car 5 in the direction near the end of the sill 9 described above. The rotating body 21 is provided in pressure contact with the predetermined portion.

  The predetermined part mentioned above consists of at least one of the door 8 of the hall 7 and the pocket 11 in which the door 8 of the hall 7 is held, for example, both.

  As shown in FIG. 3, the door-open travel prevention device 20 according to the present embodiment includes a rotation shaft 22 that rotatably holds a rotating body 21. The rotating body 21 includes an engaging portion 21a that engages with the predetermined portion described above, and a main body portion 21c that is connected to the engaging portion 21a and is attached to the rotating shaft 22 and has a long hole 21b. doing.

  Moreover, this embodiment has a connecting shaft 23 inserted into the door 6 of the car 5 at one end and inserted into the elongated hole 21b of the main body 21c of the rotating body 22 at the other end. A moving body 24 that is movable in the left-right direction in accordance with the opening operation is provided.

  As shown in FIG. 3B, one end of the moving body 24 is locked inside the door 6 of the car 5 while the door 6 of the car 5 moves to the moving end during the opening operation. A locking portion 6a is provided.

  Further, in the present embodiment, as shown in FIG. 3A and the like, the movable body 24 holds the one end so that one end can be engaged with the end of the door 6 of the car 5, and the other end is the rotating body 21. The elastic body 25 provided so that engagement with the main-body part 21c is provided.

  The rotating body 21 described above includes, for example, the upper and lower positions of the moving end in the opening direction of one door 6 of the double doors 6 of the car 5 and the opening of the other door 6 of the double doors 6. It is provided at four positions, an upper position and a lower position of the moving end in the direction. Accordingly, four moving bodies 24 and four elastic bodies 25 corresponding to the rotating body 21 are provided.

  For example, while the car 2 is traveling, the door 6 of the car 5 is kept closed as shown in FIG. 2A and FIG. 3A. At this time, for example, the moving body 24 is maintained in a state of moving leftward in FIG. 3A due to the urging force of the elastic body 25. Along with this, the connecting shaft 23 provided at the other end of the moving body 24 engages with the end of the elongated hole 21b of the rotating body 21, and the rotating body 21 is opposite to the rotating body 21 as shown in FIG. It tends to turn slightly clockwise. At this time, as shown in FIG. 3A, the engaging portion 21 a of the rotating body 21 is kept away from the end portion of the door 8 of the landing 7. Although not shown, the engaging portion 21 a of the rotating body 21 is kept away from the pocket 11 of the landing 7.

  When the car 5 reaches the predetermined floor and the door 6 begins to open, the elastic body 25 is bent by the end of the door 6, and the rotating body 21 is centered around the rotating shaft 22 by the elastic body 5. As shown in (B) of FIG. 3, the mobile body 24 rotates clockwise, and moves to the right in FIG. 3 (A), and relatively moves toward the inside of the door 6 and eventually moves. The end of the body 24 is locked to the locking portion 6 a inside the door 6. During this time, the connecting shaft 23 moves in the long hole 21 b of the rotating body 21.

  When the door 6 of the car 5 reaches the moving end during the opening operation, the end of the moving body 24 is pressed against the locking portion 6a of the door 6 of the car 5 by the elastic force of the elastic body 25. Thus, the engaging portion 21a of the rotating body 21 is pressed against the end portion of the door 8 of the landing 7 or the pocket 11 (not shown). By this pressure contact, it is possible to secure a braking force when the car 5 is about to travel with the door 6 of the car 5 open. That is, in this embodiment, traveling with the door 6 of the car 5 opened is a pressure contact when the engaging portion 21a of the rotating body 21 is engaged with the end portion of the door 8 of the landing 7, or not shown. However, it can be prevented by securing the braking force by the press contact with the engaging portion 21 a of the rotating body 21 engaged with the pocket 11.

  According to the present embodiment configured as described above, the control circuit is provided by the rotating body 21 that rotates in accordance with the movement to the moving end when the door 6 of the car 5 is opened, that is, by the mechanical component. It is not necessary, and traveling in a state where the door 6 of the car 5 is open can be prevented. Thereby, this embodiment can reduce a production cost.

  Moreover, this embodiment can prevent the driving | running | working in the state in which the door 6 of the cage | basket | car 5 opened, without requiring the components provided in the guide rail 2 side. Therefore, the present embodiment can reduce the number of parts, and the manufacturing cost can be reduced also in this respect. Moreover, this embodiment can also reduce the number of manufacturing steps at the time of incorporation by suppressing the number of parts. This also contributes to lower production costs.

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Guide rail 3 Car frame 3a Guide shoe 5 Car 6 Door 6a Locking part 7 Platform 8 Door 11 Pocket 20 Opening prevention device 21 Rotating body 21a Engaging part 21b Elongated hole 21c Main part 22 Rotating shaft 23 connecting shaft 24 moving body 25 elastic body

Claims (5)

Provided in an elevator having a guide rail standing in a hoistway, a car frame that is slidably supported by the guide rail and travels in a vertical direction, and a car that is supported by the car frame. In the door-open travel prevention device for preventing the car from traveling with the car door open,
Provided on the side of the car near the moving end during the opening operation of the car door, and rotates in accordance with the movement of the car door toward the moving end during the opening operation. A door-opening travel prevention device comprising a rotating body pressed against a part. In the door opening travel prevention device according to claim 1,
The door opening travel prevention device, wherein the predetermined portion is composed of at least one of the landing door and a pocket in which the landing door is held. In the door opening travel prevention device according to claim 2,
A rotating shaft for rotatably holding the rotating body;
The rotating body includes an engaging portion that engages with the predetermined portion, and a main body portion that is connected to the engaging portion and is attached to the rotating shaft, and has a long hole.
One end is inserted into the door of the car, and the other end has a connecting shaft that is inserted into the elongated hole of the main body of the rotating body, and the movement is movable along with the opening operation of the car door. Equipped with a body,
A door-opening travel prevention device, characterized in that a locking portion is provided inside the car for locking the one end of the moving body while the door of the car moves during an opening operation. In the door opening travel prevention device according to claim 3,
An elastic body is provided which is held by the movable body, and has one end engageable with an end portion of the car door and the other end engageable with the main body portion of the rotating body. Door open travel prevention device. In the door opening travel prevention device according to claim 1,
The car door comprises a double door,
The upper and lower positions of the moving end in the opening direction of one of the double doors, and the upper and lower positions of the moving end in the opening direction of the other of the double doors. A door-opening travel prevention device characterized by being provided at four positions.