JP2005206283A - Door device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein functions for preventing a passenger from being caught when closing a door by a safety shoe and for preventing a passenger from being caught between the door and a wing wall when opening the door and being pulled by a high-speed door and a low-speed door have to be separately provided, thereby increasing the number of parts items to increase costs and to disturb freedom in design. <P>SOLUTION: This door device for an elevator is provided with an inside member 2 connected to a door driving device and to be opened and closed, the elevator door formed of a surface plate 1 supported freely to swing in the opening/closing direction in relation to the inside member and arranged to face to passengers, a detecting means 4 to be operated when the surface plate of the elevator door swings in relation to the inside member, and a control means for controlling the door driving device in response to a result of detection by the detecting means. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an elevator door device used for an elevator entrance and exit, and more particularly to simplification of a configuration against a pinch accident or a pull-in accident during opening and closing.

  Conventional safety equipment for elevator doors is equipped with a swingable safety shoe at the door contact part of the door. When the door is closed, the safety shoe moves to the door pocket side when it comes into contact with people or objects. The switch is operated to switch from the door closing operation to the door opening operation (see, for example, Patent Document 1). In addition, the door and sleeve walls and the high-speed door and the low-speed door are prevented from being pulled in at the time of opening the door. .

Japanese Utility Model Publication No. 56-135985 (pages 3 to 5, FIGS. 3 to 5) Japanese Utility Model Laid-Open No. 05-14073 (page 4, FIG. 1)

  In the elevator door safety device according to the prior art as described above, a safety shoe is attached to the door contact side of the door. For this reason, it functioned as a pinch prevention when the door was closed, but the door and sleeve walls, and the high speed door and low speed door were prevented from being pulled in when the door was opened. There was a problem of causing an increase, and there was also a problem in that design restrictions were added.

  This invention was made to solve the problems of the prior art as described above, simplifies the structure, can detect the pinching when the door is closed, can be detected with one detection means when the door is opened, An object of the present invention is to provide an elevator door device that can be easily improved in design.

  An elevator door device according to the present invention includes an inner member that is connected to a door driving device and that opens and closes and a front plate that is supported so as to be swingable in the opening and closing direction with respect to the inner member and that faces the passenger side. A configured elevator door, detection means that operates when a front plate of the elevator door swings with respect to the inner member, and control means that controls the door driving device according to the detection result of the detection means; Is provided.

  According to this invention, the inner member that hides the door on the inner side and the front plate that is supported so as to be swingable in the opening and closing direction with respect to the inner member are configured to detect the swing of the front plate with respect to the inner member. By doing so, it is possible to easily detect “squeezed” when the door is closed and “drawn” when the door is opened with a single detection means, the structure is simple, and the design can be improved. The effect that there is.

Embodiment 1 FIG.
1 to 6 illustrate an elevator door device according to Embodiment 1 for carrying out the present invention. FIG. 1 is a front view showing the interior of the door in a normal state as seen from the front side (a ), Side view (b), and FIG. 2 are an enlarged front view (a) and side view (b) showing details of the link mechanism and the detection means, and FIG. FIG. 4 is a front view (a) and a side view (b) showing a state in which the detection means is operated by moving, and FIG. 4 is an enlarged front view (a) showing details of the link mechanism and the detection means in the state of FIG. Side view (b) and FIG. 5 are flowcharts schematically showing the operation when pinching occurs when the door is closed, and FIG. 6 is a flowchart schematically showing the operation when pulling occurs when the door is opened. is there. As shown in the figure, the elevator door of the present invention is a front plate 1 disposed on the indoor side (the front side of FIG. 1 (a), the left side of FIG. 1 (b)) of a car not shown. And, it has a double structure of an inner plate 2 as an inner member made slightly smaller than the front plate 1. In addition, the surface board 1 has shown the outline part with the dashed-two dotted line for easy understanding.

  The inner plate 2 constitutes a door body, a door hanger 21 is fixed to the upper end portion, and a leg 22 is fixed to the lower end portion, and is connected to a door driving device (not shown). The front plate 1 and the inner plate 2 are connected by a parallel link 3 that is movable relative to the inner plate 2 in the horizontal direction. The parallel link 3 includes a pedestal 31a fixed to the surface of the inner plate 2 facing the front plate 1, a support shaft 32a protruding from the center of the pedestal 31a, and a surface of the inner surface 2 facing the inner plate 2. Pedestal 31b fixed at an appropriate interval below the pedestal 31a, a support shaft 32b projecting substantially downward from the support shaft 32a on the pedestal 31b, and the support shafts 32a. And a connecting arm 33 pivotally attached to 32b. Thus, the front plate 1 can smoothly swing with respect to the inner plate 2 in the door opening / closing direction (left-right direction in FIG. 1A).

  The detecting means 4 includes an arm 41 projecting downward from the lower end portion of the connecting arm 33 in the figure, a door side safety switch 42 as a first switch fixed to a predetermined portion of the inner plate 2, and a first switch. It is comprised using a pair of switch which consists of the door stop side safety switch 43 which is 2 switches. In the first embodiment, the arm 41 is projected in the direction of the perpendicular line connecting the support shaft 32a and the support shaft 32b, and the pair of door side safety switches 42 and the door stop side safety switch 43 are connected to the vertical lines (not shown). Are provided symmetrically.

  Reference numeral 5 denotes a guide fixed to the inner plate 2 and has a function of returning the front plate 1 to its original position. The guide 5 has an arcuate curved surface 51 centered on the support shaft 32a at the upper end of the figure, and a roller 6 that rolls along the curved surface 51 at the center in the left-right direction (lowermost end). A recess 52 is formed to receive the. The roller 6 is held by a hollow roller holding member 7 fixed to the connecting arm 33 and is always pressed in the direction of the curved surface portion 51 by a compression spring 8 accommodated in the hollow portion of the roller holding member 7. . Reference numeral 9 denotes a stopper that limits the movement range of the front plate 1 in the door opening / closing direction (left-right direction in the figure) within a predetermined value, and is fixed to the side surface portion of the inner plate 2. Note that the same reference numerals denote the same or corresponding parts throughout the drawings.

  Next, the operation of the first embodiment configured as described above will be described. In the elevator door according to the first embodiment, the front plate 1 is suspended from the inner plate 2 by the connecting arms 33 constituting the parallel links 3. It can move relatively to either side. When the door closing operation is started (step S1 in FIG. 5), when the inner plate 2 is moved to the door contact side (right side in FIG. 1) by the door driving device not shown, the front plate 1 is also interlocked. Similarly, it moves to the door stop side. At that time, a person or an object is sandwiched between the doors, and exceeds a certain load determined by parameters such as the compression spring 8, the shape of the recess 52 and the diameter of the roller 6 on the front plate 1. When a force is applied, as shown in FIG. 3, the front plate 1 moves to the door pocket side (left side in FIG. 1) with respect to the inner plate 2 (S2), and the door bag safety switch 42 operates (S3). Thus, the door is switched from closed to open by a control device (not shown) (S4), and the door opening operation is started (S5). This can eliminate pinching. In FIG. 3, 1 </ b> A indicated by a one-dot chain line indicates a normal position of the front plate 1 relative to the inner plate 2.

  On the other hand, when the door opening operation is started (step S11 in FIG. 6), when the inner plate 2 starts to move to the door side (left side in FIG. 1) by the door driving device (not shown), the front plate 1 is also moved. In the same manner, the movement starts toward the door pocket side. At that time, when the hand is sandwiched between the front plate 1 and the sleeve wall (not shown), the front plate 1 is attached to the inner plate 2. When the door stop side safety switch 43 is actuated (S13), the door opening operation is temporarily stopped by the control device (not shown). Is switched from door opening to door closing (S14), and the door closing operation is started (S15). As a result, it is possible to eliminate the drawing.

  In addition, after the front board 1 moves to the door pocket side or the door stop side and the door bag side safety switch 42 or the door stop side safety switch 43 is operated to eliminate the pinching or pull-in, the gravity of the front board 1 And the compression spring 8 presses the roller 6 against the curved surface portion 51 of the guide 5, so that the front plate 1 moves toward the left and right center portion of the guide 5, and the roller 6 is stored in the recess 52 in the left and right center portion. While returning to the original position, the original door closing or opening operation is automatically controlled. The curved surface portion 51 of the guide 5 can be increased in restoring force to the center portion of the front plate 1 by making it an arc centered on the support shaft 32a or an arc having a smaller radius than that. Needless to say, the method is not limited only to the method.

  As described above, according to the first embodiment of the present invention, the elevator door has a double structure of the inner plate 2 and the front plate 1, and when a force is applied to the front plate 1, the front plate 1 is in the frontage direction (left-right direction). Since it is installed so that it can be moved in either direction, and the opening and closing operation of the door is controlled by detecting the horizontal movement of the front plate by the detection means 4 such as a switch, so that when the door is closed, people When it is pinched, the door 1 switches from the door closing operation to the door opening operation by moving the front plate 1 toward the door pocket side. Also, in situations where the door and sleeve walls are pinched when the door is opened, the front plate 1 moves to the door stop side, and the door is stopped once and the door is closed once to prevent injury due to being pulled in. can do. Eventually, the safety device can be operated both when the door is closed and when the door is opened with the front plate 1 alone, and a safety shoe that had to be provided separately from the conventional door is provided separately from the safety shoe on the end face of the door panel. It is possible to improve the design by eliminating the switch for detecting the detection.

  By the way, in the description of the above embodiment, the inner member is constituted by the inner plate 2, but the inner member does not necessarily have a plate shape, and may be a frame structure, for example. Further, the front plate 1 is supported on the inner plate 2 by the single parallel link 3 so as to be swingable. However, a plurality of parallel links may be provided. Furthermore, the method of supporting the front plate 1 on the inner plate 2 so as to be swingable is not necessarily limited to the parallel link. In addition, although an example using a mechanical switch as the detection unit 4 has been described, it is needless to say that the detection unit 4 is not limited thereto. For example, a switch or a sensor using light, magnetism, pressure or the like is the same. Can be configured. Furthermore, although it used as a door of a cage | basket | car, it is not limited to this. Of course, various modifications can be made within the spirit of the present invention.

It is the front view (a) and side view (b) which show the door in the normal state of the door apparatus for elevators by Embodiment 1 of this invention from the front side so that the inside can be seen. It is the front view (a) and side view (b) which expand and show the detail of the link mechanism and detection means shown in FIG. It is the front view (a) and side view (b) which show the state which rock | fluctuates with respect to an inner side board and the detection means operate | moves when the front board shown in FIG. It is the front view (a) and side view (b) which expand and show the detail of the link mechanism in the state of FIG. 3, and a detection means. In the door apparatus of FIG. 1, it is a flowchart which shows schematically the operation | movement when pinching has generate | occur | produced when the door is closed. In the door apparatus of FIG. 1, it is a flowchart which shows schematically an operation | movement when drawing-in generate | occur | produces at the time of door opening.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Front plate, 2 Inner plate (Inner member), 3 Parallel link, 4 Detection means, 5 Guide, 6 Roller, 7 Roller holding member, 8 Compression spring, 9 Stopper, 21 Door hanger, 22 Leg, 31a, 31b Base, 32a, 32b support shaft, 33 connecting arm, 41 arm, 42 door-seat side safety switch (first switch), 43 door-stop side safety switch (second switch), 51 curved surface part, 52 concave part.

Claims (3)

  An inner member that is connected to a door driving device and that opens and closes, and an elevator door that is supported by the inner member so as to be swingable in the opening and closing direction and is arranged to face the passenger side; and The elevator door has a detecting means that operates when the front plate swings with respect to the inner member, and a control means that controls the door driving device according to the detection result of the detecting means. A door device for an elevator.   2. The elevator door device according to claim 1, wherein the front plate and the inner member are connected to each other by a parallel link that is movable relative to the inner member in the horizontal direction.   The detection means includes a first switch that operates when the front plate moves in one direction relative to the inner member, and a second switch that operates when the front plate moves in the other direction. The elevator door device according to claim 1 or 2.

Images