JPWO2012081090A1 - Elevator door equipment - Google Patents

Abstract

Provided is an elevator door device that can determine whether a door is fully open or fully closed with a single position switch. For this reason, the light from the lower projector to the lower receiver when the position switch in which two sets of the projector and receiver are arranged in the vertical direction and the door is in one of the fully closed state and the fully opened state Light from the lower projector to the lower receiver and light from the upper projector to the upper receiver when the door is in the other state of fully closed and fully open And a second shield that simultaneously shields the light from the lower projector to the lower receiver when the door is in the other state of fully closed and fully open. A first shielding part that shields the light and a light from the upper light projector to the upper light receiver when the first shielding part shields light from the lower light projector to the lower light receiver. Thus, it was set as the structure which has the 2nd shielding part formed wider in the opening / closing direction of the door than the 1st shielding part.

Description

  The present invention relates to an elevator door device.

  In recent years, machine room-less elevators have become widespread. In the machine room-less elevator, the hoisting machine is disposed in the hoistway. For this reason, space saving of the elevator apparatus in a hoistway is requested | required. Along with this, elevator door devices are also required to be compact and highly functional.

  In an elevator door device, torque of a door motor or the like is transmitted to a door panel via a transmission mechanism. As a result, the door panel automatically opens and closes in the horizontal direction. The door panel needs to be stationary at the fully open position and the fully closed position. For this reason, it is necessary to recognize whether the door panel is fully open or fully closed.

  For such recognition, position switches that use light shielding and reflection are widely used. This position switch is more accurate than other types of switches and is resistant to dust and water.

  As a door device provided with a position switch using light, one in which two shielding plates are provided on a door panel for one position switch has been proposed. According to this door device, it can be recognized that the door panel is disposed at the fully open position or the fully closed position.

  However, the light receiving state of the position switch is the same regardless of whether the door panel is disposed at the fully open position or the fully closed position. For this reason, it cannot be determined whether the door panel is fully open or fully closed.

  On the other hand, a door device has been proposed in which a plurality of position switches are arranged side by side in the opening / closing direction of the door panel. According to this door switch, it is possible to determine whether the door panel is fully open or fully closed by causing one or more shielding plates installed on the door panel to cross the respective light emitters / receivers of the position switch (for example, Patent Documents). 1).

Japanese Patent 60-218282

  However, the one described in Patent Document 1 must use a plurality of expensive position switches.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator door device that can determine whether an elevator door is fully open or fully closed with a single position switch. It is to be.

  An elevator door device according to the present invention is provided near a door of an elevator, a position switch in which two sets of projectors and receivers each having a projector and a receiver are arranged in a vertical direction, and the door is fully closed and The first shield provided on the door and the door are fully closed and fully opened so as to shield or reflect light from the lower light projector to the lower light receiver when one of the states is fully opened. The door is provided to shield or reflect light from the lower projector to the lower receiver and light from the upper projector to the upper receiver at the same time. A second shielding body, wherein the second shielding body shields light from the lower light projector to the lower light receiver when the door is in a fully closed state or a fully opened state. A first shielding part formed to reflect, and the first shielding part The light from the upper projector to the upper light receiver is shielded or reflected when the light from the light projector to the lower light receiver is shielded or reflected. And a second shielding part formed wide in the door opening / closing direction.

  According to the present invention, it is possible to determine whether the elevator door is fully open or fully closed with one position switch.

It is a front view for demonstrating the state which the door panel of the door apparatus of the elevator in Embodiment 1 of this invention has opened fully. It is a front view for demonstrating the state in which the door panel of the door apparatus of the elevator in Embodiment 1 of this invention is fully closed. It is a principal part block diagram of the elevator door apparatus in Embodiment 1 of this invention. It is a front view for demonstrating the positional relationship of a position switch and a shielding board when the door apparatus of the elevator in Embodiment 1 of this invention is fully opened. It is a front view for demonstrating the positional relationship of a position switch and a shielding board when the door apparatus of the elevator in Embodiment 1 of this invention is fully closed. It is a perspective view of the position switch utilized for the door apparatus of the elevator in Embodiment 2 of this invention. It is a cross-sectional view of the position switch utilized for the door apparatus of the elevator in Embodiment 2 of this invention. It is a perspective view of the position switch utilized for the door apparatus of the elevator in Embodiment 3 of this invention.

  A mode for carrying out the invention will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a front view for illustrating a state in which a door panel of an elevator door device according to Embodiment 1 of the present invention is fully opened. FIG. 2 is a front view for illustrating a state in which the door panel of the elevator door device according to Embodiment 1 of the present invention is fully closed.

  FIG.1 and FIG.2 is the front view which looked at the upper part of the entrance / exit (not shown) of a cage | basket (not shown) from the cage | basket outer side. 1 and 2, 1 is a digit. The digit 1 is provided above the doorway of the basket. A rail 2 is provided at the lower part of the digit 1 so as to extend in the horizontal direction along the upper edge of the cage entrance. A stopper 3 is provided at the center and one end of the rail 2. A pair of door hangers 4 are provided on the rail 2 so as to be movable in the horizontal direction. Stoppers 5 are provided on one side of the door hanger 4. A door panel 6 is suspended from each door hanger 4.

  A motor 7 is provided on the upper side of the digit 1. A pulley 8 is provided on the other side of the digit 1. An endless toothed belt 9 is wound around the motor 7 and the pulley 8. Appropriate tension is applied to the toothed belt 9.

  One upper part of the belt grip 10 is connected to the upper toothed belt 9. One lower portion of the belt grip 10 is connected to one of the door hangers 4. The other side of the belt grip 10 is connected to the lower toothed belt 9. The other lower portion of the belt grip 10 is connected to the other side of the door hanger 4.

  A position switch 11 is provided on one side of the digit 1 and above one of the door hangers 4. A door control device (not shown) is connected to the output of the position switch 11. A first shielding plate (first shielding body) 12 is provided on the upper part of one door contact side of the door hanger 4. A second shielding plate (second shielding body) 13 is provided on one door pocket side upper portion of the door hanger 4. The first shielding plate 12 and the second shielding plate 13 are arranged on the same plane so as to be parallel to the door panel 6.

  In this door device, the toothed belt 9 is moved by the rotation of the motor 7. By this movement, the pair of belt grips 10 move in the horizontal direction and in the opposite directions. This movement causes the pair of door hangers 4 to move in the horizontal direction and in opposite directions. This movement causes the pair of door panels 6 to open and close in the horizontal direction and in opposite directions.

  When the door panel 6 is fully opened, the stopper 3 on the door pocket side contacts the stopper 5. At this time, the first shielding plate 12 is detected by the position switch 11. On the other hand, when the door panel 6 is fully closed, the door stopper 3 and the stopper 5 come into contact with each other. At this time, the second shielding plate 13 is detected by the position switch 11. Based on the detection results of these position switches 11, the door control device determines whether the door panel 6 is fully open or fully closed.

Next, the position switch 11, the first shielding plate 12, and the second shielding plate 13 will be described with reference to FIG.
FIG. 3 is a configuration diagram of a main part of the door device for an elevator according to Embodiment 1 of the present invention.

  The position switch 11 opens downward. Specifically, the position switch 11 includes a first holding part 11a, a second holding part 11b, and a connecting part 11c. The first holding part 11 a is attached to the digit 1. The 2nd holding | maintenance part 11b is arrange | positioned rather than the 1st holding | maintenance part 11a outside the cage. The connecting part 11c connects the upper end of the first holding part 11a and the upper end of the second holding part 11b.

  A pair of projectors 14a and 14b are held side by side in the vertical direction on the inner surface of the first holding part 11a. The light projectors 14a and 14b are arranged with the light emitting surface facing the outside of the basket. A pair of light receivers 15a and 15b are held side by side in the vertical direction on the inner side surface of the second holding portion 11b. The light receivers 15a and 15b are arranged with the light receiving surface facing the basket side.

  The light emitted from the lower projector 14a is received by the lower light receiver 15a. Thus, a first optical axis 16a extending in the horizontal direction is formed between the lower light projector 14a and the lower light receiver 15a. The light emitted from the upper projector 14b is received by the upper receiver 15b. A second optical axis 16b extending in the horizontal direction is formed between the upper projector 14b and the upper receiver 15b.

  Thus, the lower light projector 14a and the lower light receiver 15a function as one light projector / receiver. Similarly, the upper projector 14b and the upper receiver 15b function as one projector / receiver.

  The first shielding plate 12 is integrally formed in an L shape. Specifically, the first shielding plate 12 includes a horizontal portion 12a and a vertical portion 12b. The horizontal portion 12a is disposed so as to be in contact with the door contact side of the upper portion of the door panel 6. An elongated hole 12c is formed in the horizontal portion 12a. The long hole 12c is formed with the longitudinal direction as the horizontal direction. The vertical portion 12b is formed so as to extend upward from the door contact side of the horizontal portion 12a. The upper end of the vertical portion 12b is disposed above the first optical axis 16a and below the second optical axis 16b.

  The second shielding plate 13 is integrally formed in a bowl shape. Specifically, the second shielding plate 13 includes a horizontal portion 13a and a vertical portion (first shielding portion) 13b. The horizontal part 13a is arrange | positioned so that the door pocket side of the door panel 6 upper part may be contact | connected. An elongated hole 13c is formed in the horizontal portion 13a. The long hole 13c is formed with the longitudinal direction set in the horizontal direction. The vertical portion 13b is formed to extend upward from the door pocket side of the horizontal portion 13a. The upper end of the vertical portion 13b is disposed above the first optical axis 16a and below the second optical axis 16b.

  In the present embodiment, a protruding portion (second shielding portion) 13d is formed so as to protrude in the vertical direction from the upper end of the vertical portion 13b to the center side of the door panel 6. That is, the protruding portion 13d is formed wider in the opening / closing direction of the door panel 6 than the vertical portion 13b. The lower edge portion of the protruding portion 13d is disposed above the first optical axis 16a and below the second optical axis 16b. The upper edge portion of the protruding portion 13d is disposed above the second optical axis 16b and below the lower surface of the connecting portion 11c of the position switch 11.

  A pair of bolts 17 penetrates the elongated hole 12c of the first shielding plate 12 and the elongated hole 13c of the second shielding plate 13 from the outside of the cage. These bolts 17 are screwed into the upper part of the door panel 6. With these bolts 17, the first shielding plate 12 and the second shielding plate 13 are fixed to the upper part of the door panel 6. By loosening these bolts 17, the positions of the first shielding plate 12 and the second shielding plate 13 can be adjusted in the opening / closing direction of the door panel 6.

Next, a method for determining whether the door panel 6 is fully opened will be described with reference to FIG.
FIG. 4 is a front view for explaining the positional relationship between the position switch and the shielding plate when the elevator door device according to Embodiment 1 of the present invention is fully opened.

  As shown in FIG. 4, the first shielding plate 12 is disposed inside the position switch 11 when the door panel 6 is fully opened. The upper end of the vertical portion 12b of the first shielding plate 12 is disposed above the first optical axis 16a and below the second optical axis 16b. For this reason, the first shielding plate 12 shields only the first optical axis 16a. In this case, only the lower light receiver 15a does not receive light. In this state, the door control device determines that the door panel 6 is fully open.

Next, a method for determining whether the door panel 6 is fully closed will be described with reference to FIG.
FIG. 5 is a front view for explaining the positional relationship between the position switch and the shielding plate when the door device of the elevator according to Embodiment 1 of the present invention is fully closed.

  As shown in FIG. 5, when the door panel 6 is fully closed, the second shielding plate 13 is disposed inside the position switch 11. At this time, the upper end of the vertical portion 13b of the second shielding plate 13 is disposed above the first optical axis 16a and below the second optical axis 16b. For this reason, the vertical portion 13b of the second shielding plate 13 blocks the first optical axis 16a.

  On the other hand, the lower edge portion of the protruding portion 13d of the second shielding plate 13 is disposed above the first optical axis 16a and below the second optical axis 16b. The upper edge portion of the protruding portion 13d of the second shielding plate 13 is disposed above the second optical axis 16b and below the lower surface of the connecting portion 11c of the position switch 11. For this reason, the protruding portion 13d of the second shielding plate 13 blocks the second optical axis 16b.

  Therefore, immediately before the door panel 6 is fully closed, the protruding portion 13d of the second shielding plate 13 blocks the second optical axis 16b. On the other hand, the vertical portion 13b of the second shielding plate 13 does not block the first optical axis 16a. Thereafter, when the door panel 6 is fully closed, the protruding portion 13d of the second shielding plate 13 maintains a state where the second optical axis 16b is blocked. On the other hand, the vertical portion 13b of the second shielding plate 13 blocks the first optical axis 16a. In this case, both the lower light receiver 15a and the upper light receiver 15b do not receive light. In this state, the door control device determines that the door panel 6 is fully closed.

  According to the first embodiment described above, the light receiving state of the position switch 11 differs between when the door panel 6 is fully opened and when it is fully closed. For this reason, with one position switch 11, it is possible to determine whether the elevator door is fully open or fully closed. That is, it is possible to determine whether the elevator door is fully open or fully closed with an inexpensive system.

  Moreover, the protruding portion 13d of the second shielding plate 13 is formed wider in the opening / closing direction of the door panel 6 than the vertical portion 13b. For this reason, even if the second shielding plate 13 is attached somewhat obliquely, the protruding portion 13d always blocks the second optical axis 16b when the vertical portion 13b blocks the first optical axis 16a. For this reason, a highly reliable system that prevents erroneous determination of the position of the door panel 6 can be obtained.

  Further, the protruding portion 13 d of the second shielding plate 13 protrudes toward the center side of the door panel 6. For this reason, the distance between the outer sides of the first shielding plate 12 and the second shielding plate 13 can be minimized. Thereby, even if it is the structure which the 2nd shielding board 13 protrudes from the door pocket side of a door apparatus at the time of fully opening the door panel 6, the protrusion amount can be minimized. That is, the influence of the second shielding plate 13 on the required frontage dimension of the hoistway can be reduced.

  Further, the light receivers 15a and 15b direct the light receiving surface toward the cage side. That is, the light receiving surfaces of the light receivers 15a and 15b face the opposite side of the hole. For this reason, disturbance light, such as sunlight, can be prevented from entering the light receivers 15a and 15b directly. Thereby, the erroneous determination of the position of the door panel 6 can be prevented.

  The position of the first shielding plate 12 and the position of the second shielding plate 13 may be reversed. In this case, when the door panel 6 is fully opened, the second shielding plate 13 blocks the first optical axis 16a and the second optical axis 16b. On the other hand, when the door panel 6 is fully closed, the first shielding plate 12 blocks only the first optical axis 16a. Even with such an arrangement of the first shielding plate 12 and the second shielding plate 13, the same effect as in the first embodiment can be obtained.

  Further, the position switch 11 may be a light projector / receiver using light reflection. In this case, the projector and the light receiver are disposed on the same side with respect to the shielding plate. The light emitted from the projector is reflected by the shielding plate and accepted by the light receiver. If the door control device determines the position of the panel door 6 based on the light receiving state of the light receiver, the same effect as in the first embodiment can be obtained.

Embodiment 2. FIG.
6 is a perspective view of a position switch used in an elevator door device according to Embodiment 2 of the present invention. FIG. 7 is a cross-sectional view of a position switch used in an elevator door device according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to Embodiment 1 and an equivalent part, and description is abbreviate | omitted.

  As shown in FIGS. 6 and 7, in the position switch 11 of the second embodiment, the first holding part 11a is formed wider in the opening / closing direction of the door panel 6 than the second holding part 11b. At least the first holding part 11 a is formed with a property that suppresses the reflection of the disturbance light 18. For example, the surface of the first holding unit 11a is colored black. A concave portion is formed on the inner surface of the second holding portion 11b. The light receivers 15a and 15b are attached to the bottom surface of the recess. Thereby, the light receivers 15a and 15b are disposed so as to be retracted from the inner surface of the second holding portion 11b.

  According to the second embodiment described above, the light receivers 15a and 15b are disposed so as to be retracted from the inner surface of the second holding portion 11b. For this reason, disturbance light 18 such as sunlight can be prevented from directly entering the light receivers 15a and 15b. For this reason, erroneous determination of the arrangement of the door panel 6 due to the disturbance light 18 can be prevented.

  Further, the first holding portion 11a of the position switch 11 is formed wider in the opening / closing direction of the door panel 6 than the second holding portion 11b. For this reason, the disturbance light 18 reflected by the digit 1 or the like can be blocked by the side edge portion of the first holding portion 11a from entering the light receivers 15a and 15b. Furthermore, at least the first holding portion 11 a is formed with a property that suppresses the reflection of the disturbance light 18. That is, the reflection of the disturbance light 18 at the first holding unit 11a is suppressed. For this reason, erroneous determination of the position of the door panel 6 can be prevented.

Embodiment 3 FIG.
FIG. 8 is a perspective view of a position switch used in an elevator door device according to Embodiment 3 of the present invention. In addition, the same code | symbol is attached | subjected to Embodiment 1 and an equivalent part, and description is abbreviate | omitted.

  In the third embodiment, the display device 19 is provided on the outer surface of the cage of the second holding portion 11 b of the position switch 11. The display device 19 displays the light receiving state of the lower light receiver 15a. For example, the display device 19 lights up or blinks when the first optical axis 16a is blocked.

  According to the third embodiment described above, the display device 19 displays the light receiving state of the lower light receiver 15a. For this reason, when the door panel 6 is fully opened, the position adjustment between the position switch 11 and the first shielding plate 12 can be easily performed. Further, when the door panel 6 is fully closed, the position adjustment between the position switch 11 and the second shielding plate 13 can be easily performed.

  When adjusting the positions of the position switch 11, the first shielding plate 12, and the second shielding plate 13, the operator can easily determine whether the door panel 6 is fully opened or fully closed. For this reason, it is not necessary to distinguish and display whether the door panel 6 is fully open or fully closed. That is, the number of display states and the number of display devices 19 themselves can be reduced as compared with the case where the light receiving states of the lower light receiver 15a and the upper light receiver 15b are determined and displayed. For this reason, the position of the position switch 11, the first shielding plate 12, and the second shielding plate 13 can be adjusted using an inexpensive display device 19.

  As described above, the elevator door device according to the present invention can be used for an elevator that determines whether the door is fully open or fully closed.

1 digit 2 rail 3 pad 4 door hanger 5 stopper 6 door panel 7 motor 8 pulley 9 toothed belt 10 belt grip 11 position switch 11a first holding portion 11b second holding portion 11c connecting portion 12 first shielding plate 12a horizontal portion 12b Vertical portion 12c Long hole 13 Second shielding plate 13a Horizontal portion 13b Vertical portion 13c Long hole 13d Projection portions 14a and 14b Projectors 15a and 15b Light receiver 16a First optical axis 16b Second optical axis 17 Bolt 18 Ambient light 19 Display device

Claims (6)

A position switch provided in the vicinity of an elevator door, in which two sets of projectors and receivers having a projector and a receiver are arranged in a vertical direction;
A first shield provided on the door so as to shield or reflect light from the lower light projector to the lower light receiver when the door is in a fully closed or fully opened state;
When the door is in the fully closed or fully open state, the light from the lower projector to the lower receiver and the light from the upper projector to the upper receiver are simultaneously shielded or reflected. A second shield provided on the door,
With
The second shield is
A first shielding portion formed to shield or reflect light from the lower light projector to the lower light receiver when the door is in the other state of full closing and full opening;
When the first shielding unit shields or reflects light from the lower light projector to the lower light receiver, light from the upper light projector to the upper light receiver is shielded or reflected. A second shielding part formed wider in the opening / closing direction of the door than the first shielding part;
An elevator door device characterized by comprising: The position switch is disposed above the door;
The first shield is provided at one upper part of the door contact side and the door pocket side of the door,
The second shield is provided on the other upper part of the door contact side and the door pocket side of the door,
The elevator door device according to claim 1, wherein the second shielding part is formed so as to protrude from an upper part of the first shielding part toward a center side of the door.   3. The elevator door device according to claim 1, wherein the light receiver has a light receiving surface directed toward a car side of the elevator. 4.   4. The elevator door device according to claim 1, wherein the light receiver is disposed in a recess of the position switch and is retracted from a surface of the position switch. 5. The position switch is
A first holding unit for holding a projector that emits light toward the outside of the elevator car;
A second holding unit for holding a light receiver with a light receiving surface facing the cage side;
With
The said 1st holding | maintenance part is the property which suppresses reflection of disturbance light, and was formed more widely in the opening-and-closing direction of the said door than the said 2nd holding | maintenance part. The elevator door device described in 1. A display device that is provided on the surface of the position switch and displays a light receiving state of the lower light receiver;
The elevator door device according to any one of claims 1 to 5, wherein the elevator door device is provided.

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