EP2653425B1 - Elevator door device - Google Patents
Elevator door device Download PDFInfo
- Publication number
- EP2653425B1 EP2653425B1 EP10860697.1A EP10860697A EP2653425B1 EP 2653425 B1 EP2653425 B1 EP 2653425B1 EP 10860697 A EP10860697 A EP 10860697A EP 2653425 B1 EP2653425 B1 EP 2653425B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- door
- elevator
- intercepting
- photoreceiver
- phototransmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000003287 optical effect Effects 0.000 description 31
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/22—Operation of door or gate contacts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/06—Door or gate operation of sliding doors
- B66B13/08—Door or gate operation of sliding doors guided for horizontal movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/143—Control systems or devices electrical
Definitions
- the present invention relates to a door operator of an elevator.
- a position switch which uses the interception and reflection of light is widely used to recognize these conditions. Compared to switches of other types, this position switch has high accuracy and is resistant to dust, water and the like.
- the light receiving condition of the position switch is the same in whichever of a fully open position and a fully closed position the door panel may be arranged. For this reason, it is impossible to discriminate between a fully open condition and a fully closed condition of the door panel.
- Patent Literature 1 In the door operator provided in Patent Literature 1, it is necessary to use expensive position switches in a plurality of numbers.
- the present invention was made to solve the problem described above, and the object of the invention is to provide a door operator of an elevator capable of discriminating between a fully open condition and a fully closed condition of a door of the elevator by one position switch.
- a door operator of an elevator of the present invention includes a position switch which is provided in the vicinity of a door of the elevator and in which two sets of phototransmitter/photoreceiver devices, each having a phototransmitter and a photoreceiver, are arranged side by side in a vertical direction; a first intercepting body provided on the door in such a manner as to intercept or reflect light from a lower side phototransmitter to a lower side photoreceiver when the door has come to one of a fully closed condition and a fully open condition; and a second intercepting body provided on the door in such a manner as to simultaneously intercept or reflect light from the lower side phototransmitter to the lower side photoreceiver and light from an upper side phototransmitter to an upper side photoreceiver when the door has come to the other of the fully closed condition and the fully open condition; wherein the second intercepting body has: a first intercepting portion which is formed in such a manner as to intercept or reflect light from the lower side phototransmitter to the lower side
- Figure 1 is a front view to explain the condition in which a door panel of the door operator of an elevator in Embodiment 1 of the present invention is fully open.
- Figure 2 is a front view to explain the condition in which a door panel of the door operator of an elevator in Embodiment 1 of the present invention is fully closed.
- Figures 1 and 2 are front views obtained when an upper part of an entrance (not shown) of a car (not shown) is seen from outside the car.
- reference numeral 1 denotes a support beam.
- the support beam 1 is provided above the entrance of the car.
- a rail 2 is provided in the lower part of the support beam 1 in such a manner as to extend in a horizontal direction along an upper edge part of the entrance of car.
- a strap metal 3 is provided in the middle of the rail 2 and at one end thereof.
- a pair of door hangers 4 is provided in the rail 2 in such a manner as to be movable in a horizontal direction.
- a stopper 5 is provided on both sides of one door hanger 4.
- a door panel 6 is suspended from each of the door hangers 4.
- a motor 7 is provided in an upper part of one side of the support beam 1.
- a pulley 8 is provided in an upper part of the other side of the support beam 1.
- An endless toothed belt 9 is wound onto the motor 7 and the pulley 8. An appropriate tension is applied to the toothed belt 9.
- An upper side of the toothed belt 9 is connected to an upper part of one belt gripper 10.
- a lower part of one belt gripper 10 is connected to one door hanger 4.
- a lower side of the toothed belt 9 is connected to the other belt gripper 10.
- a lower part of the other belt gripper 10 is connected to the other door hanger 4.
- a position switch 11 is provided on one side of the support beam 1 above one door hanger 4.
- a door control device (not shown) is connected to the output of the position switch 11.
- a first intercepting plate (a first intercepting body) 12 is provided in a door stopper side upper part of one door hanger 4.
- a second intercepting plate (a second intercepting body) 13 is provided in a door pocket side upper part of one door hanger 4. The first intercepting plate 12 and the second intercepting plate 13 are arranged on the same plane in such a manner as to be parallel to the door panel 6.
- the door control device discriminates between a fully open condition and a fully closed condition of the door panel 6.
- Figure 3 is a principal-part structural diagram of the door operator of an elevator in Embodiment 1 of the present invention.
- the position switch 11 opens downward.
- the position switch 11 is provided with a first holding portion 11a, a second holding portion 11b, and a connecting portion 11c.
- the first holding portion 11a is attached to the support beam 1.
- the second holding portion 11b is arranged nearer to the external side of the car than the first holding portion 11a.
- the connecting portion 11c connects an upper end of the first holding portion 11a and an upper end of the second holding portion 11b.
- a pair of photo transmitters 14a and 14b is held side by side on an inner side surface of the first holding portion 11a in a vertical direction.
- the phototransmitters 14a and 14b are arranged, with the light emitting surfaces thereof facing the external side of the car.
- a pair of photoreceivers 15a and 15b is held side by side on an inner side surface of the second holding portion 11b in a vertical direction.
- the photoreceivers 15a and 15b are arranged, with the light receiving surfaces thereof facing the car side.
- a first optical axis 16a which extends in a horizontal direction is formed between the lower side phototransmitter 14a and the lower side photoreceiver 15a.
- Light emitted by the upper side phototransmitter 14b is received by the upper side photoreceiver 15b.
- a second optical axis 16b which extends in a horizontal direction is formed between the upper side phototransmitter 14b and the upper side photoreceiver 15b.
- the lower side phototransmitter 14a and the lower side photoreceiver 15a function as one phototransmitter/photoreceiver device.
- the upper side phototransmitter 14b and the upper side photoreceiver 15b function as one phototransmitter/photoreceiver device.
- the first intercepting plate 12 is integrally formed in the shape of the letter L. Specifically, the first intercepting plate 12 is provided with a horizontal portion 12a and a vertical portion 12b. The horizontal portion 12a is arranged in such a manner as to come into contact with the door stopper side of an upper part of the door panel 6. A long hole 12c is formed in the horizontal portion 12a. The long hole 12c is formed, with the longitudinal direction thereof being in a horizontal direction. The vertical portion 12b is formed in such a manner as to extend upward from the door stopper side of the horizontal portion 12a. An upper end of the vertical portion 12b is arranged in such a manner as to be above the first optical axis 16a and below the second optical axis 16b.
- the second intercepting plate 13 is integrally formed in the shape of a hook. Specifically, the second intercepting plate 13 is provided with a horizontal portion 13a and a vertical portion (a first intercepting portion) 13b.
- the horizontal portion 13a is arranged in such a manner as to come into contact with the door pocket side of an upper part of the door panel 6.
- a long hole 13c is formed in the horizontal portion 13a.
- the long hole 13c is formed, with the longitudinal direction thereof being in a horizontal direction.
- the vertical portion 13b is formed in such a manner as to extend upward from the door pocket side of the horizontal portion 13a.
- An upper end of the vertical portion 13b is arranged in such a manner as to be above the first optical axis 16a and below the second optical axis 16b.
- a protrusion portion (a second intercepting portion) 13d is formed in such a manner as to protrude in a vertical direction from the upper end of the vertical portion 13b to the middle side of the door panel 6. That is, the protrusion portion 13d is formed to be wider in the opening and closing direction of the door panel 6 than in the vertical portion 13b.
- a lower edge part of the protrusion portion 13d is arranged above the first optical axis 16a and below the second optical axis 16b.
- An upper edge part of the protrusion portion 13d is arranged above the second optical axis 16b and below a lower surface of the connecting portion 11c of the position switch 11.
- a pair of bolts 17 pierces through each of the long hole 12c of the first intercepting plate 12 and the long hole 13c of the second intercepting plate 13 from the external side of the car. These bolts 17 are screwed into an upper part of the door panel 6. The first intercepting plate 12 and the second intercepting plate 13 are fixed by these bolts 17 to the upper part of the door panel 6. By loosening these bolts 17, the positions of the first intercepting plate 12 and the second intercepting plate 13 can be adjusted in the opening and closing direction of the door panel 6.
- Figure 4 is a front view to explain the positional relationship between the position switch and the intercepting plates obtained when the door operator of an elevator in Embodiment 1 of the present invention is fully open.
- the first intercepting plate 12 when the door panel 6 is fully open, the first intercepting plate 12 is arranged on the internal side of the position switch 11. The upper end of the vertical portion 12b of the first intercepting plate 12 is arranged above the first optical axis 16a and below the second optical axis 16b. For this reason, the first intercepting plate 12 intercepts only the first optical axis 16a. In this case, only the lower side photoreceiver 15a ceases to receive light. In this condition, the door control device determines that the door panel 6 is fully open.
- Figure 5 is a front view to explain the positional relationship between the position switch and the intercepting plates obtained when the door operator of an elevator in Embodiment 1 of the present invention is fully closed.
- the second intercepting plate 13 is arranged on the internal side of the position switch 11. At this time, the upper end of the vertical portion 13b of the second intercepting plate 13 is arranged above the first optical axis 16a and below the second optical axis 16b. For this reason, the vertical portion 13b of the second intercepting plate 13 intercepts the first optical axis 16a.
- the lower edge part of the protrusion portion 13d of the second intercepting plate 13 is arranged above the first optical axis 16a and below the second optical axis 16b.
- the upper edge part of the protrusion portion 13d of the second intercepting plate 13 is 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 protrusion portion 13d of the second intercepting plate 13 intercepts the second optical axis 16b.
- the protrusion portion 13d of the second intercepting plate 13 intercepts the second optical axis 16b.
- the vertical portion 13b of the second intercepting plate 13 does not intercept the first optical axis 16a.
- the protrusion portion 13d of the second intercepting plate 13 maintains the condition of intercepting the second optical axis 16b.
- the vertical portion 13b of the second intercepting plate 13 intercepts the first optical axis 16a. In this case, both the lower side photoreceiver 15a and the upper side photoreceiver 15b cease to receive light. In this condition, the door control device determines that the door panel 6 is fully closed.
- the light receiving condition of the position switch 11 differs from the condition in which the door panel 6 is fully open to the condition in which the door panel 6 is fully closed. For this reason, with one position switch 11, it is possible to discriminate between a fully open condition and a fully closed condition of the door of an elevator. That is, with an inexpensive system, it is possible to discriminate between a fully open condition and a fully closed condition of the door of an elevator.
- the protrusion portion 13d of the second intercepting plate 13 is formed to be wider than the vertical portion 13b in the opening and closing direction of the door panel 6. For this reason, even when the second intercepting plate 13 is attached somewhat aslant, the protrusion portion 13d always intercepts the second optical axis 16b while the vertical portion 13b is intercepting the first optical axis 16a. Therefore, it is possible to obtain a high-reliability system which prevents a wrong determination on the position of the door panel 6.
- the protrusion portion 13d of the second intercepting plate 13 protrudes to the middle side of the door panel 6. For this reason, it is possible to minimize the distance between the outer sides of the first intercepting plate 12 and the second intercepting plate 13. As a result of this, even if the configuration is such that the second intercepting plate 13 protrudes from the door pocket side of the door operator when the door panel 6 is fully open, it is possible to minimize the protruding amount. That is, it is possible to minimize the effect of the second intercepting plate 13 on the necessary front size of the shaft.
- the photoreceivers 15a and 15b are arranged, with the light receiving surfaces thereof facing the car side. That is, the light receiving surfaces of the photoreceivers 15a and 15b face the side opposite to the hall. For this reason, disturbance light such as sunlight is prevented from directly entering the photoreceivers 15a and 15b. As a result of this, it is possible to prevent a wrong determination on the position of the door panel 6.
- the position of the first intercepting plate 12 and the position of the second intercepting plate 13 may be reversed.
- the second intercepting plate 13 intercepts the first optical axis 16a and the second optical axis 16b.
- the first intercepting plate 12 intercepts only the first optical axis 16a. Even in the case of this arrangement of the first intercepting plate 12 and the second intercepting plate 13, it is possible to obtain the same effect as in Embodiment 1.
- the position switch 11 may be a phototransmitter/photoreceiver device in which the reflection of light is used.
- the phototransmitter and the photoreceiver are arranged on the same side with respect to the intercepting plate. And light emitted by the phototransmitter is reflected on the intercepting plate and received by the photoreceiver. If the door control device determines the position of the panel door 6 according to the light receiving condition of this photoreceiver, the same effect as in Embodiment 1 can be obtained.
- Figure 6 is a perspective view of a position switch used in the door operator of an elevator in Embodiment 2 of the present invention.
- Figure 7 is a cross-sectional view of the position switch used in the door operator of an elevator in Embodiment 2 of the present invention.
- like numerals refer to like or corresponding parts as in Embodiment 1 and description of these parts are omitted.
- a first holding portion 11a is formed to be wider than a second holding portion 11b in the opening and closing direction of the door panel 6. At least the first holding portion 11a is formed with the property of suppressing the reflection of disturbance light 18.
- the surface of the first holding portion 11a is colored black.
- a concave portion is formed on an inner side surface of the second holding portion 11b. Photoreceivers 15a and 15b are attached to a bottom surface of the concave portion. As a result of this, the photoreceivers 15a and 15b are arranged in a manner recessed from the inner side surface of the second holding portion 11b.
- the photoreceivers 15a and 15b are arranged in a manner recessed from the inner side surface of the second holding portion 11b. For this reason, it is possible to suppress disturbance light 18 such as sunlight from directly entering the photoreceivers 15a and 15b. Consequently, it is possible to prevent a wrong determination on the arrangement of the door panel 6 due to the disturbance light 18.
- the first holding portion 11a of the position switch 11 is formed to be wider than the second holding portion 11b in the opening and closing direction of the door panel 6. For this reason, it is possible to intercept the disturbance light 18 reflected from the support beam 1 and the like entering the photoreceivers 15a and 15b by means of the side edge part of the first holding portion 11a. Furthermore, at least the first holding portion 11a is formed with the property of suppressing the reflection of disturbance light 18. That is, the reflection of disturbance light 18 in the first holding portion 11a is suppressed. Consequently, it is possible to prevent a wrong determination on the position of the door panel 6.
- Figure 8 is a perspective view of a position switch used in the door operator of an elevator in Embodiment 3 of the present invention.
- like numerals refer to like or corresponding parts as in Embodiment 1 and description of these parts are omitted.
- an indication device 19 is provided on a surface, facing to the outside of the car, of a second holding portion 11b of a position switch 11.
- the indication device 19 indicates the light receiving condition of a lower side photoreceiver 15a. For example, the indication device 19 lights up or blinks when the first optical axis 16a is intercepted.
- the indication device 19 indicates the light receiving condition of the lower side photoreceiver 15a. For this reason, when the door panel 6 is fully open, it is possible to easily carry out the position adjustment of the position switch 11 and the first intercepting plate 12. Furthermore, when the door panel 6 is fully closed, it is possible to easily carry out the position adjustment of the position switch 11 and the second intercepting plate 13.
- the operator can make a judgment easily as to whether the door panel 6 is fully open or fully closed. For this reason, it is unnecessary to indicate a fully open condition and a fully closed condition of the door panel 6 in a discriminated manner. That is, it is possible to reduce the number of the indication states and the number of the indication devices 19 compared to the case where the light receiving condition of the lower side photoreceiver 15a and the upper side photoreceiver 15b are indicated in a discriminated manner. Consequently, it is possible to adjust the positions of the position switch 11, the first intercepting plate 12, and the second intercepting plate 13 using an inexpensive indication device 19.
- the door operator of an elevator of the present invention can be used in an elevator which discriminates between a fully open condition and a fully closed condition of the door.
Description
- The present invention relates to a door operator of an elevator.
- In recent years, machine-room-less elevators have been in widespread use. In a machine-room-less elevator, a traction machine is arranged in a shaft. For this reason, space saving of elevator equipment in the shaft is required. As a result of this, also in a door operator of an elevator, a compact and multifunctional door operator is required.
- In a door operator of an elevator, the torque of a door motor and the like is transmitted to a door panel via a transmission mechanism. As a result of this, the door panel opens and closes automatically in a horizontal direction. It is necessary that the door panel come to a standstill in a fully open position and in a fully closed position. For this reason, it is necessary to recognize a fully open condition and a fully closed condition of the door panel.
- A position switch which uses the interception and reflection of light is widely used to recognize these conditions. Compared to switches of other types, this position switch has high accuracy and is resistant to dust, water and the like.
- As a door operator provided with a position switch using light, there has been proposed a door operator in which two intercepting plates are provided on a door panel for one position switch. In this door operator, it is possible to recognize that the door panel is arranged in a fully open position or in a fully closed position.
- However, the light receiving condition of the position switch is the same in whichever of a fully open position and a fully closed position the door panel may be arranged. For this reason, it is impossible to discriminate between a fully open condition and a fully closed condition of the door panel.
- In contrast to this, there has been proposed a door operator in which a plurality of position switches are arranged side by side in the opening and closing direction of the door panel. In this door switch, one or more intercepting plates provided on a door panel traverse each phototransmitter/photoreceiver device of the position switches, whereby it is possible to discriminate between a fully open condition and a fully closed condition of the door panel (refer to
Patent Literature 1, for example). - Similar door operators are known from
Patent Literatures -
- Patent Literature 1: Japanese Patent No.
60-218282 - Patent Literature 2:
JP 2002 053280 A - Patent Literature 3:
EP 0 841291 A1 - However, in the door operator provided in
Patent Literature 1, it is necessary to use expensive position switches in a plurality of numbers. - The present invention was made to solve the problem described above, and the object of the invention is to provide a door operator of an elevator capable of discriminating between a fully open condition and a fully closed condition of a door of the elevator by one position switch.
- A door operator of an elevator of the present invention includes a position switch which is provided in the vicinity of a door of the elevator and in which two sets of phototransmitter/photoreceiver devices, each having a phototransmitter and a photoreceiver, are arranged side by side in a vertical direction; a first intercepting body provided on the door in such a manner as to intercept or reflect light from a lower side phototransmitter to a lower side photoreceiver when the door has come to one of a fully closed condition and a fully open condition; and a second intercepting body provided on the door in such a manner as to simultaneously intercept or reflect light from the lower side phototransmitter to the lower side photoreceiver and light from an upper side phototransmitter to an upper side photoreceiver when the door has come to the other of the fully closed condition and the fully open condition; wherein the second intercepting body has: a first intercepting portion which is formed in such a manner as to intercept or reflect light from the lower side phototransmitter to the lower side photoreceiver when the door has come to the other of the fully closed condition and the fully open condition; and a second intercepting portion which is formed to be wider than the first intercepting portion in an opening and closing direction of the door in such a manner as to intercept or reflect light from the upper side phototransmitter to the upper side photoreceiver while the first intercepting portion is intercepting or reflecting light from the lower side phototransmitter to the lower side photoreceiver.
- According to the present invention, it is possible to discriminate between a fully open condition and a fully closed condition of the door of an elevator by one position switch.
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Figure 1 is a front view to explain the condition in which a door panel of the door operator of an elevator inEmbodiment 1 of the present invention is fully open. -
Figure 2 is a front view to explain the condition in which a door panel of the door operator of an elevator inEmbodiment 1 of the present invention is fully closed. -
Figure 3 is a principal-part structural diagram of the door operator of an elevator inEmbodiment 1 of the present invention. -
Figure 4 is a front view to explain the positional relationship between the position switch and the intercepting plates obtained when the door operator of an elevator inEmbodiment 1 of the present invention is fully open. -
Figure 5 is a front view to explain the positional relationship between the position switch and the intercepting plates obtained when the door operator of an elevator inEmbodiment 1 of the present invention is fully closed. -
Figure 6 is a perspective view of a position switch used in the door operator of an elevator inEmbodiment 2 of the present invention. -
Figure 7 is a cross-sectional view of the position switch used in the door operator of an elevator inEmbodiment 2 of the present invention. -
Figure 8 is a perspective view of a position switch used in the door operator of an elevator inEmbodiment 3 of the present invention. - Embodiments for carrying out the present invention will be described with reference to the accompanying drawings. In each of the drawings, like numerals refer to like or corresponding parts and overlaps of description of these parts are appropriately simplified or omitted.
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Figure 1 is a front view to explain the condition in which a door panel of the door operator of an elevator inEmbodiment 1 of the present invention is fully open.Figure 2 is a front view to explain the condition in which a door panel of the door operator of an elevator inEmbodiment 1 of the present invention is fully closed. -
Figures 1 and 2 are front views obtained when an upper part of an entrance (not shown) of a car (not shown) is seen from outside the car. InFigures 1 and 2 ,reference numeral 1 denotes a support beam. Thesupport beam 1 is provided above the entrance of the car. Arail 2 is provided in the lower part of thesupport beam 1 in such a manner as to extend in a horizontal direction along an upper edge part of the entrance of car. Astrap metal 3 is provided in the middle of therail 2 and at one end thereof. A pair ofdoor hangers 4 is provided in therail 2 in such a manner as to be movable in a horizontal direction. Astopper 5 is provided on both sides of onedoor hanger 4. Adoor panel 6 is suspended from each of thedoor hangers 4. - A
motor 7 is provided in an upper part of one side of thesupport beam 1. Apulley 8 is provided in an upper part of the other side of thesupport beam 1. An endless toothed belt 9 is wound onto themotor 7 and thepulley 8. An appropriate tension is applied to the toothed belt 9. - An upper side of the toothed belt 9 is connected to an upper part of one
belt gripper 10. A lower part of onebelt gripper 10 is connected to onedoor hanger 4. A lower side of the toothed belt 9 is connected to theother belt gripper 10. A lower part of theother belt gripper 10 is connected to theother door hanger 4. - A
position switch 11 is provided on one side of thesupport beam 1 above onedoor hanger 4. A door control device (not shown) is connected to the output of theposition switch 11. A first intercepting plate (a first intercepting body) 12 is provided in a door stopper side upper part of onedoor hanger 4. A second intercepting plate (a second intercepting body) 13 is provided in a door pocket side upper part of onedoor hanger 4. The first interceptingplate 12 and the second interceptingplate 13 are arranged on the same plane in such a manner as to be parallel to thedoor panel 6. - In this door operator, the toothed belt 9 moves due to the rotation of the
motor 7. As a result of this movement, a pair ofbelt grippers 10 in turn moves in a horizontal direction, in directions reverse to each other. As a result of this movement, a pair ofdoor hangers 4 in turn moves in a horizontal direction, in directions reverse to each other. As a result of this movement, a pair ofdoor panels 6 opens and closes in turn in a horizontal direction, in directions reverse to each other. - When the
door panel 6 is fully open, the door pocketside strap metal 3 and thestopper 5 come into contact with each other. At this time, the first interceptingplate 12 is detected by theposition switch 11. On the other hand, when thedoor panel 6 is fully closed, the door stopperside strap metal 3 and thestopper 5 come into contact with each other. At this time, the second interceptingplate 13 is detected by theposition switch 11. On the basis of these detection results of theposition switch 11, the door control device discriminates between a fully open condition and a fully closed condition of thedoor panel 6. - Next, with the aid of
Figure 3 a description will be given of theposition switch 11, the first interceptingplate 12, and the second interceptingplate 13. -
Figure 3 is a principal-part structural diagram of the door operator of an elevator inEmbodiment 1 of the present invention. - The position switch 11 opens downward. Specifically, the
position switch 11 is provided with afirst holding portion 11a, asecond holding portion 11b, and a connectingportion 11c. Thefirst holding portion 11a is attached to thesupport beam 1. Thesecond holding portion 11b is arranged nearer to the external side of the car than thefirst holding portion 11a. The connectingportion 11c connects an upper end of thefirst holding portion 11a and an upper end of thesecond holding portion 11b. - A pair of
photo transmitters first holding portion 11a in a vertical direction. Thephototransmitters photoreceivers second holding portion 11b in a vertical direction. Thephotoreceivers - Light emitted by the
lower side phototransmitter 14a is received by thelower side photoreceiver 15a. As a result of this, a firstoptical axis 16a which extends in a horizontal direction is formed between thelower side phototransmitter 14a and thelower side photoreceiver 15a. Light emitted by theupper side phototransmitter 14b is received by theupper side photoreceiver 15b. A secondoptical axis 16b which extends in a horizontal direction is formed between theupper side phototransmitter 14b and theupper side photoreceiver 15b. - In this manner, the
lower side phototransmitter 14a and thelower side photoreceiver 15a function as one phototransmitter/photoreceiver device. Similarly, also theupper side phototransmitter 14b and theupper side photoreceiver 15b function as one phototransmitter/photoreceiver device. - The first intercepting
plate 12 is integrally formed in the shape of the letter L. Specifically, the first interceptingplate 12 is provided with ahorizontal portion 12a and avertical portion 12b. Thehorizontal portion 12a is arranged in such a manner as to come into contact with the door stopper side of an upper part of thedoor panel 6. A long hole 12c is formed in thehorizontal portion 12a. The long hole 12c is formed, with the longitudinal direction thereof being in a horizontal direction. Thevertical portion 12b is formed in such a manner as to extend upward from the door stopper side of thehorizontal portion 12a. An upper end of thevertical portion 12b is arranged in such a manner as to be above the firstoptical axis 16a and below the secondoptical axis 16b. - The second intercepting
plate 13 is integrally formed in the shape of a hook. Specifically, the second interceptingplate 13 is provided with ahorizontal portion 13a and a vertical portion (a first intercepting portion) 13b. Thehorizontal portion 13a is arranged in such a manner as to come into contact with the door pocket side of an upper part of thedoor panel 6. A long hole 13c is formed in thehorizontal portion 13a. The long hole 13c is formed, with the longitudinal direction thereof being in a horizontal direction. Thevertical portion 13b is formed in such a manner as to extend upward from the door pocket side of thehorizontal portion 13a. An upper end of thevertical portion 13b is arranged in such a manner as to be above the firstoptical axis 16a and below the secondoptical axis 16b. - In this embodiment, a protrusion portion (a second intercepting portion) 13d is formed in such a manner as to protrude in a vertical direction from the upper end of the
vertical portion 13b to the middle side of thedoor panel 6. That is, theprotrusion portion 13d is formed to be wider in the opening and closing direction of thedoor panel 6 than in thevertical portion 13b. A lower edge part of theprotrusion portion 13d is arranged above the firstoptical axis 16a and below the secondoptical axis 16b. An upper edge part of theprotrusion portion 13d is arranged above the secondoptical axis 16b and below a lower surface of the connectingportion 11c of theposition switch 11. - A pair of
bolts 17 pierces through each of the long hole 12c of the first interceptingplate 12 and the long hole 13c of the second interceptingplate 13 from the external side of the car. Thesebolts 17 are screwed into an upper part of thedoor panel 6. The first interceptingplate 12 and the second interceptingplate 13 are fixed by thesebolts 17 to the upper part of thedoor panel 6. By loosening thesebolts 17, the positions of the first interceptingplate 12 and the second interceptingplate 13 can be adjusted in the opening and closing direction of thedoor panel 6. - Next, with the aid of
Figure 4 a description will be given of a method of discriminating a fully open condition of thedoor panel 6. -
Figure 4 is a front view to explain the positional relationship between the position switch and the intercepting plates obtained when the door operator of an elevator inEmbodiment 1 of the present invention is fully open. - As shown in
Figure 4 , when thedoor panel 6 is fully open, the first interceptingplate 12 is arranged on the internal side of theposition switch 11. The upper end of thevertical portion 12b of the first interceptingplate 12 is arranged above the firstoptical axis 16a and below the secondoptical axis 16b. For this reason, the first interceptingplate 12 intercepts only the firstoptical axis 16a. In this case, only thelower side photoreceiver 15a ceases to receive light. In this condition, the door control device determines that thedoor panel 6 is fully open. - Next, with the aid of
Figure 5 a description will be given of a method of discriminating a fully closed condition of thedoor panel 6. -
Figure 5 is a front view to explain the positional relationship between the position switch and the intercepting plates obtained when the door operator of an elevator inEmbodiment 1 of the present invention is fully closed. - As shown in
Figure 5 , when thedoor panel 6 is fully closed, the second interceptingplate 13 is arranged on the internal side of theposition switch 11. At this time, the upper end of thevertical portion 13b of the second interceptingplate 13 is arranged above the firstoptical axis 16a and below the secondoptical axis 16b. For this reason, thevertical portion 13b of the second interceptingplate 13 intercepts the firstoptical axis 16a. - In contrast to this, the lower edge part of the
protrusion portion 13d of the second interceptingplate 13 is arranged above the firstoptical axis 16a and below the secondoptical axis 16b. The upper edge part of theprotrusion portion 13d of the second interceptingplate 13 is above the secondoptical axis 16b and below the lower surface of the connectingportion 11c of theposition switch 11. For this reason, theprotrusion portion 13d of the second interceptingplate 13 intercepts the secondoptical axis 16b. - Therefore, immediately before the full closing of the
door panel 6, theprotrusion portion 13d of the second interceptingplate 13 intercepts the secondoptical axis 16b. On the other hand, thevertical portion 13b of the second interceptingplate 13 does not intercept the firstoptical axis 16a. After that, when thedoor panel 6 becomes fully closed, theprotrusion portion 13d of the second interceptingplate 13 maintains the condition of intercepting the secondoptical axis 16b. On the other hand, thevertical portion 13b of the second interceptingplate 13 intercepts the firstoptical axis 16a. In this case, both thelower side photoreceiver 15a and theupper side photoreceiver 15b cease to receive light. In this condition, the door control device determines that thedoor panel 6 is fully closed. - According to
Embodiment 1 described above, the light receiving condition of theposition switch 11 differs from the condition in which thedoor panel 6 is fully open to the condition in which thedoor panel 6 is fully closed. For this reason, with oneposition switch 11, it is possible to discriminate between a fully open condition and a fully closed condition of the door of an elevator. That is, with an inexpensive system, it is possible to discriminate between a fully open condition and a fully closed condition of the door of an elevator. - Besides, the
protrusion portion 13d of the second interceptingplate 13 is formed to be wider than thevertical portion 13b in the opening and closing direction of thedoor panel 6. For this reason, even when the second interceptingplate 13 is attached somewhat aslant, theprotrusion portion 13d always intercepts the secondoptical axis 16b while thevertical portion 13b is intercepting the firstoptical axis 16a. Therefore, it is possible to obtain a high-reliability system which prevents a wrong determination on the position of thedoor panel 6. - Furthermore, the
protrusion portion 13d of the second interceptingplate 13 protrudes to the middle side of thedoor panel 6. For this reason, it is possible to minimize the distance between the outer sides of the first interceptingplate 12 and the second interceptingplate 13. As a result of this, even if the configuration is such that the second interceptingplate 13 protrudes from the door pocket side of the door operator when thedoor panel 6 is fully open, it is possible to minimize the protruding amount. That is, it is possible to minimize the effect of the second interceptingplate 13 on the necessary front size of the shaft. - And the
photoreceivers photoreceivers photoreceivers door panel 6. - The position of the first intercepting
plate 12 and the position of the second interceptingplate 13 may be reversed. In this case, when thedoor panel 6 is fully open, the second interceptingplate 13 intercepts the firstoptical axis 16a and the secondoptical axis 16b. On the other hand, when thedoor panel 6 is fully closed, the first interceptingplate 12 intercepts only the firstoptical axis 16a. Even in the case of this arrangement of the first interceptingplate 12 and the second interceptingplate 13, it is possible to obtain the same effect as inEmbodiment 1. - The position switch 11 may be a phototransmitter/photoreceiver device in which the reflection of light is used. In this case, the phototransmitter and the photoreceiver are arranged on the same side with respect to the intercepting plate. And light emitted by the phototransmitter is reflected on the intercepting plate and received by the photoreceiver. If the door control device determines the position of the
panel door 6 according to the light receiving condition of this photoreceiver, the same effect as inEmbodiment 1 can be obtained. -
Figure 6 is a perspective view of a position switch used in the door operator of an elevator inEmbodiment 2 of the present invention.Figure 7 is a cross-sectional view of the position switch used in the door operator of an elevator inEmbodiment 2 of the present invention. Incidentally, like numerals refer to like or corresponding parts as inEmbodiment 1 and description of these parts are omitted. - As shown in
Figures 6 and 7 , in theposition switch 11 ofEmbodiment 2, afirst holding portion 11a is formed to be wider than asecond holding portion 11b in the opening and closing direction of thedoor panel 6. At least thefirst holding portion 11a is formed with the property of suppressing the reflection ofdisturbance light 18. For example, the surface of thefirst holding portion 11a is colored black. A concave portion is formed on an inner side surface of thesecond holding portion 11b.Photoreceivers photoreceivers second holding portion 11b. - According to
Embodiment 2 described above, thephotoreceivers second holding portion 11b. For this reason, it is possible to suppress disturbance light 18 such as sunlight from directly entering thephotoreceivers door panel 6 due to thedisturbance light 18. - The
first holding portion 11a of theposition switch 11 is formed to be wider than thesecond holding portion 11b in the opening and closing direction of thedoor panel 6. For this reason, it is possible to intercept thedisturbance light 18 reflected from thesupport beam 1 and the like entering thephotoreceivers first holding portion 11a. Furthermore, at least thefirst holding portion 11a is formed with the property of suppressing the reflection ofdisturbance light 18. That is, the reflection of disturbance light 18 in thefirst holding portion 11a is suppressed. Consequently, it is possible to prevent a wrong determination on the position of thedoor panel 6. -
Figure 8 is a perspective view of a position switch used in the door operator of an elevator inEmbodiment 3 of the present invention. Incidentally, like numerals refer to like or corresponding parts as inEmbodiment 1 and description of these parts are omitted. - In
Embodiment 3, anindication device 19 is provided on a surface, facing to the outside of the car, of asecond holding portion 11b of aposition switch 11. Theindication device 19 indicates the light receiving condition of alower side photoreceiver 15a. For example, theindication device 19 lights up or blinks when the firstoptical axis 16a is intercepted. - According to
Embodiment 3 described above, theindication device 19 indicates the light receiving condition of thelower side photoreceiver 15a. For this reason, when thedoor panel 6 is fully open, it is possible to easily carry out the position adjustment of theposition switch 11 and the first interceptingplate 12. Furthermore, when thedoor panel 6 is fully closed, it is possible to easily carry out the position adjustment of theposition switch 11 and the second interceptingplate 13. - During the position adjustment of the
position switch 11, the first interceptingplate 12, and the second interceptingplate 13, the operator can make a judgment easily as to whether thedoor panel 6 is fully open or fully closed. For this reason, it is unnecessary to indicate a fully open condition and a fully closed condition of thedoor panel 6 in a discriminated manner. That is, it is possible to reduce the number of the indication states and the number of theindication devices 19 compared to the case where the light receiving condition of thelower side photoreceiver 15a and theupper side photoreceiver 15b are indicated in a discriminated manner. Consequently, it is possible to adjust the positions of theposition switch 11, the first interceptingplate 12, and the second interceptingplate 13 using aninexpensive indication device 19. - As described above, the door operator of an elevator of the present invention can be used in an elevator which discriminates between a fully open condition and a fully closed condition of the door.
-
- 1
- support beam
- 2
- rail
- 3
- strap metal
- 4
- door hanger
- 5
- stopper
- 6
- door panel
- 7
- motor
- 8
- pulley
- 9
- toothed belt
- 10
- belt gripper
- 11
- position switch
- 11a
- first holding portion
- 11b
- second holding portion
- 11c
- connecting portion
- 12
- first intercepting plate
- 12a
- horizontal portion
- 12b
- vertical portion
- 12c
- long hole
- 13
- second intercepting plate
- 13a
- horizontal portion
- 13b
- vertical portion
- 13c
- long hole
- 13d
- protrusion portion
- 14a,
- 14b phototransmitter
- 15a,
- 15b photoreceiver
- 16a
- first optical axis
- 16b
- second optical axis
- 17
- bolt
- 18
- disturbance light
- 19
- indication device
Claims (6)
- A door operator of an elevator, comprising:a door of an elevator, a position switch (11) which is provided in the vicinity of a door of the elevator and in which two sets of phototransmitter / photoreceiver devices, each having a phototransmitter (14a, 14b) and a photoreceiver (15a, 15b), are arranged side by side in a vertical direction;a first intercepting body (12) provided on the door of an elevator in such a manner as to intercept or reflect light from a lower side phototransmitter (14a) to a lower side photoreceiver (15a) when the door of the elevator has come to one of a fully closed condition and a fully open condition; anda second intercepting body (13) provided on the door of the elevator in such a manner as to simultaneously intercept or reflect light from the lower side phototransmitter (14a) to the lower side photoreceiver (15a) and light from an upper side phototransmitter (14b) to an upper side photoreceiver (15b) when the door of the elevator has come to the other of the fully closed condition and the fully open condition;characterized in that the second intercepting body (13) has:a first intercepting portion (13b) which is formed in such a manner as to intercept or reflect light from the lower side phototransmitter (14a) to the lower side photoreceiver (15a) when the door of the elevator has come to the other of the fully closed condition and the fully open condition; anda second intercepting portion (13d) which is formed to be wider than the first intercepting portion (13b) in an opening and closing direction of the door of the elevator in such a manner as to intercept or reflect light from the upper side phototransmitter (14b) to the upper side photoreceiver (15b) while the first intercepting portion (13b) is intercepting or reflecting light from the lower side phototransmitter (14a) to the lower side photoreceiver (15a).
- The door operator of an elevator according to claim 1, wherein the position switch (11) is arranged above the door of the elevator
wherein the first intercepting body (12) is provided in an upper part of the door of the elevator on one of a door stopper side and a door pocket side,
wherein the second intercepting body (13) is provided in an upper part of the door of the elevator on the other of the door stopper side or the door pocket side, and
wherein the second intercepting portion (13d) is formed in such a manner as to protrude from an upper part of the first intercepting portion (13b) to the middle side of the door of the elevator. - The door operator of an elevator according to claim 1 or 2, wherein a light receiving surface of each photoreceiver (15a, 15b) faces to the car side of the elevator.
- The door operator of an elevator according to any of claims 1 to 3, wherein each photoreceiver (15a, 15b) is arranged in a concave portion of the position switch (11) and is arranged in such a manner as to be recessed from the surface of the position switch (11).
- The door operator of an elevator according to any of claims 1 to 4, wherein the position switch (11) comprises:a first holding portion (11a) which holds the phototransmitters (14a, 14b) which emits light toward an external side of the car of the elevator; anda second holding portion (11b) which holds the photoreceivers (15a, 15b) light receiving surfaces of which face to the car side,wherein the first holding portion (11a) has property of suppressing the reflection of disturbance light and is formed to be wider than the second holding portion (11b) in the opening and closing direction of the door of the elevator.
- The door operator of an elevator according to any of claims 1 to 5, further comprising:
an indication device (19) which is provided on the surface of the position switch (11) and indicates the light receiving condition of the lower side photoreceiver (15a).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2010/072538 WO2012081090A1 (en) | 2010-12-15 | 2010-12-15 | Elevator door device |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2653425A1 EP2653425A1 (en) | 2013-10-23 |
EP2653425A4 EP2653425A4 (en) | 2017-10-11 |
EP2653425B1 true EP2653425B1 (en) | 2018-09-05 |
Family
ID=46244217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10860697.1A Active EP2653425B1 (en) | 2010-12-15 | 2010-12-15 | Elevator door device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2653425B1 (en) |
JP (1) | JP5494823B2 (en) |
KR (1) | KR101449888B1 (en) |
CN (1) | CN103261081B (en) |
WO (1) | WO2012081090A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101809864B1 (en) * | 2014-06-11 | 2017-12-15 | 미쓰비시덴키 가부시키가이샤 | Elevator door control device |
BR102016030720B1 (en) * | 2016-12-28 | 2022-06-21 | Brascabos Componentes Elétricos E Eletrônicos Ltda | Optical safety switch for household appliances |
JP6491370B1 (en) * | 2018-01-29 | 2019-03-27 | 東芝エレベータ株式会社 | Door detection system |
CN110697528A (en) * | 2019-09-10 | 2020-01-17 | 宁夏电通物联网科技股份有限公司 | Detection device for detecting opening and closing states of car door based on diffuse reflection, elevator and detection method |
JP7296063B1 (en) | 2022-09-14 | 2023-06-22 | フジテック株式会社 | Elevator car door detector |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60218282A (en) | 1984-04-10 | 1985-10-31 | 三菱電機株式会社 | Controller for door of elevator |
JPH07106861B2 (en) * | 1989-12-15 | 1995-11-15 | 三菱電機株式会社 | Elevator door controls |
US5881844A (en) * | 1996-11-07 | 1999-03-16 | Otis Elevator Company | Secondary positioning system for elevator car doors |
JP3920528B2 (en) | 2000-04-07 | 2007-05-30 | 株式会社日立ビルシステム | Elevator position detection device |
JP2001354379A (en) * | 2000-06-14 | 2001-12-25 | Mitsubishi Electric Corp | Doorway opening and closing device for elevator car |
JP4640883B2 (en) * | 2000-08-09 | 2011-03-02 | 三菱電機株式会社 | Elevator door control device |
JP4392539B2 (en) * | 2006-07-19 | 2010-01-06 | 株式会社日立製作所 | Elevator control device |
JP2010137956A (en) * | 2008-12-11 | 2010-06-24 | Toshiba Elevator Co Ltd | Elevator door device |
EP2502870B1 (en) * | 2009-11-18 | 2016-03-30 | Mitsubishi Electric Corporation | Elevator door control device |
-
2010
- 2010-12-15 JP JP2012548569A patent/JP5494823B2/en active Active
- 2010-12-15 KR KR1020137017485A patent/KR101449888B1/en active IP Right Grant
- 2010-12-15 CN CN201080070698.4A patent/CN103261081B/en active Active
- 2010-12-15 EP EP10860697.1A patent/EP2653425B1/en active Active
- 2010-12-15 WO PCT/JP2010/072538 patent/WO2012081090A1/en active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
EP2653425A1 (en) | 2013-10-23 |
CN103261081A (en) | 2013-08-21 |
JP5494823B2 (en) | 2014-05-21 |
KR20130105691A (en) | 2013-09-25 |
JPWO2012081090A1 (en) | 2014-05-22 |
EP2653425A4 (en) | 2017-10-11 |
CN103261081B (en) | 2015-08-05 |
WO2012081090A1 (en) | 2012-06-21 |
KR101449888B1 (en) | 2014-10-10 |
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