JP3150564U - Elevator door opening prevention device - Google Patents

Abstract

The present invention provides a door-opening travel prevention device that can reliably prevent a car from traveling even when the door opening amount is small. A door-opening travel prevention device according to the present invention is used in an elevator in which a car travels up and down along a guide rail 5 to prevent the car from traveling while the door is open. It is a prevention device, provided on the upper frame 3 and lower frame of the cage, provided on the back surface 5a side of the guide rail 5 and the protruding member 7 that protrudes toward the guide rail 5 side when the door is opened, A limiting member 8 is provided that engages with the protruding member 7 in a protruding state and restricts the vertical movement thereof. [Selection] Figure 2

Description

  The present invention relates to a door-opening travel prevention device that prevents a car from traveling while a door is open in an elevator in which the car travels up and down along a guide rail.

  In recent years, on the landing floor, there have been many accidents caused by the elevator car traveling up and down with the doors open (hereinafter referred to as “door opening”). Is a big problem.

  As an elevator provided with a device for preventing door-opening traveling, for example, the one described in Patent Document 1 is known. As shown in FIG. 4, the elevator 20 includes a first engagement member 23 provided on the door 22 of the cage 21 and a second engagement member 25 provided on the landing sill 24. When the door 22 is opened, the first engagement member 23 and the second engagement member 25 are engaged, and the vertical movement of the cage 21 is restricted (see FIG. 4B). .

JP 2008-201533 A

  However, in the conventional elevator 20 described above, the movement of the door 22 and the movement of the first engagement member 23 are completely interlocked, so the moment the door 22 starts to open, that is, when the opening amount of the door 22 is small. The traveling of the basket 21 could not be prevented.

  Accordingly, an object of the present invention is to provide a door-opening travel prevention device that can reliably prevent the car from traveling even when the door opening amount is small.

  In order to solve the above-described problems, a door open travel prevention device according to the present invention is used in an elevator in which a car travels up and down along a guide rail, and the car travels when the car door is open. A door-opening travel prevention device for preventing the above-mentioned, provided on the basket side, and provided on the guide rail side, and a protruding member that protrudes toward the guide rail side when the door is opened. And a restricting member that engages with the projecting member in a protruding state and restricts the vertical movement of the projecting member.

  Preferably, the protruding member is configured to protrude when the door starts to open, and to return to the original state when the door is closed.

The restricting member is formed, for example, by forming a through hole for receiving the protruding member in a metal flat plate member provided on the back surface of the guide rail.
Moreover, it is preferable that the said protrusion member is provided in both the basket lower frame which supports the floor part of the said basket, and the basket upper frame which supports the ceiling part of the said basket, for example.

  ADVANTAGE OF THE INVENTION According to this invention, even when there is little opening amount of a door, the door opening travel prevention apparatus which can prevent a cage | basket | car traveling reliably can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is an elevator provided with the door-opening travel prevention apparatus based on this invention, Comprising: (A) is the front view seen from the landing side, (B) is the top view seen from the ceiling side. BRIEF DESCRIPTION OF THE DRAWINGS It is an enlarged view of the guide shoe vicinity of the elevator provided with the door-opening travel prevention apparatus based on this invention, Comprising: (A) is a front view, (B) is a top view, (C) is seen from the back surface side of the guide rail. It is a side view. It is a block diagram for demonstrating operation | movement of the elevator provided with the door open travel prevention apparatus which concerns on this invention. It is the cross-sectional view which looked at the conventional elevator from the ceiling side, Comprising: (A) is the state which closed the door, (B) is a figure which shows the state which the door opened fully.

  Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a door-opening travel prevention device according to the present invention will be described.

  FIG. 1 is an example of an elevator provided with a door-opening travel prevention device according to the present invention, in which (A) is a front view seen from the landing side, and (B) is a top view seen from the ceiling side. As shown in these drawings, the elevator 1 travels up and down in a hoistway along a pair of guide rails 5 having a T-shaped cross section arranged in parallel and facing each other at a predetermined interval. And a hoisting machine (not shown) for moving the car 2 up and down.

  The cage 2 includes a cage upper frame 3 that supports the ceiling portion and a cage lower frame 4 that supports the floor portion, and guide rails 5 are sandwiched between the left and right tip portions of the cage upper frame 3 and the cage lower frame 4. A guide shoe 6 is provided. That is, the basket 2 is provided with a total of four guide shoes 6, and each guide shoe 6 sandwiches the guide rail 5. Thereby, the cage | basket 2 can raise / lower smoothly along the guide rail 6. FIG.

  In addition, the basket 2 includes a pair of doors 9 that are double left and right. Opening and closing of the door 9 is controlled by a control unit (not shown), which opens when the basket 2 arrives at each floor and stops, and closes when the passenger gets on and off and the “close button” on the operation panel is pressed.

  2A and 2B are enlarged views of the vicinity of the guide shoe 6, wherein FIG. 2A is a front view, FIG. 2B is a top view, and FIG. 2C is a right side view of the guide rail 5 as viewed from the back surface 5a side. As shown in these drawings, the tip of the upper frame 3 is provided with a metal protruding member 7 that protrudes toward the guide rail 5 in response to a command from the control unit. As the projecting member 7, various types such as an electromagnetic type, a hydraulic type, and an air type can be used. In addition, the protrusion member 7 should just be a rod shape, and is not limited to a column shape.

  On the back surface 5a side of the guide rail 5, a limiting member 8 is attached by a fixing tool such as a bolt. The limiting member 8 is a metal flat plate member in which a through hole 8 a is formed at a position corresponding to the protruding member 7. The thickness of the limiting member 8 is determined based on the maximum load of the elevator 1. The restricting member 8 is attached so that the positions of the protruding member 7 and the through hole 8a are aligned when the cage 2 stops at a predetermined position on each floor.

  In particular, as shown in FIG. 2B, the long side edge portion of the limiting member 8 is bent. However, when the necessary mechanical rigidity can be sufficiently ensured, the bending member can be omitted. .

  When the protruding member 7 protrudes, the limiting member 8 and the protruding member 7 are engaged through the through hole 8a. Accordingly, the vertical movement of the protruding member 7, that is, the vertical movement (running) of the basket 2 is limited by the limiting member 8. On the other hand, the limiting member 8 does not engage with the protruding member 7 that is not protruding. Therefore, in this case, the vertical movement of the cage 2 is not restricted by the restriction member 8.

  Note that FIG. 2 is a diagram showing a configuration in the vicinity of the guide shoe 6 provided in the cage upper frame 3, but the cage lower frame 4 side has almost the same configuration.

  Next, with reference to the block diagram of FIG. 3, operation | movement of the elevator 1 provided with the door open travel prevention apparatus which concerns on this invention is demonstrated. As shown in this figure, the control unit 10 controls the hoisting machine 13, the door 9 and the protruding member 7 based on an operation command input from the operation panel 11 and a signal output from the door opening sensor 12.

  The door open sensor 12 is provided in the vicinity of the door 9 and outputs a signal related to the open / closed state of the door 9. For example, the door open sensor 12 outputs a low level signal when the door 9 is closed (opening amount <threshold (for example, 10 cm)), and a high level signal when the door 9 opens (opening amount ≧ 10 cm). Is output. Of course, the threshold value can be arbitrarily changed.

  The control part 10 protrudes the protrusion member 7 when the signal from the door opening sensor 12 is a High level, and does not protrude when it is a Low level. That is, the control unit 10 projects the protruding member 7 as soon as the door 9 is opened. Thereby, it can prevent reliably that the cage | basket | car 2 drive | works with the door 9 opened.

  Subsequently, as an example of a specific operation of the elevator 1, an operation when a person moves from the second floor to the fifth floor will be described. When a person presses the “△ (up) button” on the operation panel 11 at the landing, the control unit 10 operates the hoisting machine 13 and the basket 2 moves to a predetermined position on the second floor. Then, the door 9 begins to open and the protruding member 7 and the limiting member 8 are engaged. Thereby, the cage | basket | car 2 will be in the state by which driving | running | working was restrict | limited.

  When a person gets into the car 2 and presses the “close button” on the operation panel 11 in the car, the door 9 starts to close according to a command from the control unit 10. And if the opening amount of the door 9 becomes below a threshold value, the protrusion member 7 will return to the original state, and the cage | basket | car 2 will be in the state by which driving | running | working is not restrict | limited. Thereafter, the control unit 10 operates the hoisting machine 13 to move the basket 2 to the fifth floor.

  When the basket 2 arrives at a predetermined position on the fifth floor, the door 9 starts to open and the projecting member 7 and the restricting member 8 are engaged, so that the car 2 is in a state where travel is restricted. Then, after the door 9 is opened to some extent, the person gets off the basket 2.

  As described above, according to the door opening travel prevention device according to the present invention, the protruding member 7 and the limiting member 8 are engaged as soon as the door 9 is slightly opened. Thereby, it can prevent reliably that the cage | basket | car 2 drive | works with the door 9 opened.

As mentioned above, although preferable embodiment of the door open travel prevention apparatus based on this invention was described, this invention is not limited to the said structure.
For example, the set of the projecting member 7 and the limiting member 8 is not limited to four sets, and can be increased or decreased as appropriate. However, from the viewpoint of surely preventing the door-opening traveling, it is desirable that the number of sets of the projecting member 7 and the limiting member 8 is larger.
Further, the material of the protruding member 7 and the limiting member 8 is not limited to metal, and any material having necessary mechanical rigidity can be used.
Moreover, the attachment position of the limiting member 8 is not limited to the back surface 5a of the guide rail 5, and may be attached to the inner wall of the hoistway.

  In addition, a door opening sensor 12 (see FIG. 3) that outputs two types of signals, that is, a door opening signal indicating that the door 9 is fully opened and a door closing signal indicating that the door 9 is completely closed is used. In the case where the door closing signal is not output, the protruding member 7 may be controlled to protrude. Thereby, the driving | running | working of the basket 2 can be restrict | limited as soon as the door 9 begins to open.

DESCRIPTION OF SYMBOLS 1 Elevator 2 Basket 3 Basket upper frame 4 Basket lower frame 5 Guide rail 6 Guide shoe 7 Projection member 8 Restriction member 9 Door 10 Control part 11 Operation panel 12 Door open sensor 13 Hoisting machine

Claims (4)

It is used in an elevator in which a car travels up and down along a guide rail, and is a door-open travel prevention device for preventing the car from traveling when the car door is open,
Protruding members provided on the basket side and projecting toward the guide rail side when the door is opened,
A limiting member that is provided on the guide rail side and engages with the protruding member that protrudes to limit the vertical movement of the protruding member;
A door-opening travel prevention device characterized by comprising:   2. The door-opening travel prevention device according to claim 1, wherein the protruding member protrudes when the door starts to open and returns to an original state when the door is closed.   The said restriction | limiting member is a metal flat plate-like member provided in the back surface of the said guide rail, and has a through-hole for receiving the said protrusion member, The Claim 1 or 2 characterized by the above-mentioned. Door open travel prevention device.   The door according to any one of claims 1 to 3, wherein the projecting member is provided on both a cage lower frame that supports a floor portion of the cage and a cage upper frame that supports a ceiling portion of the cage. Open travel prevention device.

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