JP3771126B2 - Sliding automatic door - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sliding automatic door, and more particularly to an automatic door provided with a start sensor for opening and closing the door on the door surface of the door.
[0002]
[Prior art]
In the open / close control of the sliding type automatic door, there is a type in which a touch sensor is provided as an activation sensor on the door and an opening is opened by the door when a passerby contacts the touch sensor. In this method, when a predetermined time has elapsed since the passer disappeared, the opening is closed by the door in principle. However, when a person is standing in the opening when the door is to be closed, the door to be closed may come into contact with the person who is standing. Therefore, a support sensor that detects that a person is standing within the width of the opening is provided, and if the support sensor detects a person after the opening, the door remains open. And
[0003]
In this system, if a passerby tries to pass through the opening while the door is about to close, the door that is closing is not opened unless the passerby touches the touch switch moving with the door. Since this is not sufficiently recognized by ordinary passers-by, there is a possibility that the closing door will come into contact with the passer-by.
[0004]
Therefore, recently, another invisible sensor above the opening was installed as a safety sensor, and when this safety sensor detects a passerby approaching the door, the door opens and closes the door. An automatic door that prevents contact with a person and improves safety has been proposed.
[0005]
[Problems to be solved by the invention]
However, in the above automatic door, in addition to the touch switch, another safety sensor must be installed. The touch switch installed on the door surface, the support sensor passed through the opening, and installed invisible. This requires a total of three safety sensors, which increases the cost.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide a sliding automatic door that can reduce the cost without lowering the safety of traffic.
[0007]
[Means for Solving the Problems]
  The sliding automatic door according to the present invention has a slidable door that opens and closes an opening through which a passerby passes. This door may be single-sided or double-sided. The display part is provided in the position which the said passerby contacts in the door surface of a door. The display unit can be, for example, a display board or a seal on which a display for prompting a passerby to contact is printed. Above the openingOne sensorIs installed. In this sensor, a plurality of detection ranges including a detection range in the vicinity of the front of the display unit are set to be substantially the same as the width of the opening. This sensorHas a plurality of light projectors that irradiate light rays and a plurality of light receivers that receive the reflected light of these light rays, and the plurality of detection ranges are formed by the light projectors and the light receivers.The plurality of detection ranges are formed from above the opening toward the floor surface. When the sensor detects an object when the door is in the closed position where the opening is closed, this detection signal is supplied to the control means, which controls the door drive means, and the drive means opens the door. Can be made. In addition, when the door is in a position other than the closed position, for example, in the open position where the door is completely open, if the sensor detects an object, this detection signal is supplied to the control means, and the control means The door can be kept open.
[0008]
In this sliding automatic door, when the passerby tries to contact the display unit when the door is in the closed position, the passer's hand enters the detection range near the front of the display unit, and the passerby is detected. . Therefore, the door can be opened based on this detection. Further, when the door is in the open position, the plurality of detection ranges of the sensor are set to the width of the opening, so that the sensor can detect a passerby standing in the vicinity of the opening. Therefore, even if it is a timing which closes a door, a door is open | released by this detection and it can prevent that a passerby contacts a door. Thus, in this slide type automatic door, one sensor can be used as both a start sensor for opening the door and a safety sensor for preventing a passerby from contacting the door. Therefore, the number of sensors can be reduced.
[0009]
For example, if the number of sensors is to be reduced, a display unit is provided on the door, the light beam of the support sensor is passed near the front of the display unit, and when the opening is closed, a passerby touches the display unit and supports it. A configuration is also conceivable in which the opening is opened when the light beam of the sensor is blocked, and the open state is maintained when the light beam is blocked while the door is open. However, in this configuration, the support sensor that passes the light beam into the opening is also used as a touch switch, so that a passerby approaching the door outside the opening may not be reliably detected. Contact with passers-by cannot be reliably prevented. However, according to the present invention, since the detection range is formed from above the opening toward the floor surface, a passerby outside the opening can be reliably detected when used as a safety sensor. The safety of passers-by passing through automatic doors is not reduced.
[0010]
  The sensor enables only a detection range in the vicinity of the front of the display unit among a plurality of detection ranges in the previous period in a state where the door is located in a closed position where the previous period opening is closed, and the door is located in a position other than the closed position. All multiple detection ranges in the stateValid.
[0011]
In general, a person who wants to pass through a door approaches the display unit to contact the display unit to open the door in a state where the door is in the closed position. A person who does not intend to pass through the door and is simply standing in front of the door does not attempt to approach the display unit. Therefore, when there is a door in the closed position by configuring as described above, even if there is a person who is within the detection range of the door opening width but does not intend to pass through the detection range other than the vicinity of the front of the display unit. By detecting this person, the door is not opened, and the useless opening and closing of the door can be prevented.
[0012]
  Further, in the state where the door is located at a position other than the closed position,Than the state where the door is in the closed positionThe plurality of detection ranges in a depth direction away from the door surface of the door, With the same width as the opening widthIt can also be enlarged.
[0013]
When configured in this way, the depth of the detection range becomes large except for the closed position, and a passerby can be detected in a wider range than when the door is positioned at the closed position, and the passerby is too close to the door. For example, a door that is being closed can be reopened before the safety of the passerby is increased.
[0014]
  In the sensor, adjacent detection areas can be overlapped in front of the display unit.
[0015]
In this way, a plurality of detection areas are formed so that adjacent detection areas overlap in the vicinity of the installation position of the display unit, so even if the adjustment of the installation position of the display unit is rough, an attempt is made to contact the display unit. The hand of the person who performs can be detected reliably.
[0016]
  In addition, it is possible to set a detection range near the front of the display unit by a projector near the center arranged substantially perpendicular to the floor, and to set the remaining plurality of detection ranges by other projectors. it can.
[0017]
In such a configuration, since the detection range for the display unit is arranged perpendicular to the floor surface, the display unit may be provided on the door surface in parallel to the detection range. The position can be easily adjusted.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
The sliding automatic door according to the first embodiment of the present invention shown in FIGS. 1 to 5 has a door opening 2 as shown in FIG. The door opening 2 is formed in a vertically long rectangle, and a vertically long rectangular door 4 that opens and closes the door opening 2 slides. When the door 4 closes the opening 2, i.e. when the door 4 is in the closed position, the door 4 overlaps the opening 2, and when the door 4 opens the opening 2, i.e. when the door 4 is in the open position, the door 4 Overlaps the fixed wall 6 provided on the side of the opening 2.
[0019]
As shown in FIG. 1, an invisible 8 is provided above the opening 2 and the fixed wall 6. Driving means for sliding the door 4 in the intangible 8, for example, a door engine 10 and a transmission mechanism (not shown) are provided. In order to control the door engine 10 and slide the door 4, a control means, for example, a door controller 12 is also provided in the eyeless 8.
[0020]
For opening / closing control of the door 4 by the door controller 12, sensors 14 a and 14 b are attached to both outer sides of the invisible eye 8 as shown in FIGS. 2 and 3. Since both the sensors 14a and 14b have the same configuration, only the sensor 14a will be described.
[0021]
As shown in FIG. 4, the sensor 14a has a plurality of, for example, seven projectors 16a to 16g. These projectors 16a to 16g are constituted by infrared light emitting diodes, for example, and are arranged to project light toward the floor surface side. This arrangement | positioning is arrange | positioned at the arch shape which is convex upwards where the projector 16d is located in the center. This arch is arranged so that the optical axes of the projectors 16a to 16g intersect at one point, for example, the center of the diffusing lens 18. That is, the center of the arch coincides with the center of the diffusing lens. Each of the projectors 16a to 16g projects light with a width that is spread to some extent on both sides of the optical axis.
[0022]
The sensor 14a also includes a plurality of, for example, seven light receivers 20a to 20g. The light receivers 20a to 20g are configured by, for example, infrared photodiodes, and are arranged in an arch shape like the light projectors 16a to 16g, and receive reflected light from the floor surface. That is, the sensor 14a is a reflective optical sensor.
[0023]
The light receiver 20 a is arranged so that the light beam projected from the projector 16 a and reflected by the floor surface is received through the condenser lens 22. The light receiver 20b is disposed so as to receive the light beam projected from the projector 16b and reflected by the floor surface through the condenser lens 22. Hereinafter, similarly, the remaining light receivers 20c to 20g are also arranged so as to receive light beams projected from the light projectors 16c to 16g and reflected by the floor surface via the condenser lens 22, respectively.
[0024]
Among the seven projectors 16a to 16g and the light receivers 20a to 20g, the light projector 16c and the light receiver 20c form the detection range shown in FIG. 1, for example, the detection region 24c, and the light projector 16d and the light receiver 20d form the detection region 24d. Then, the light projector 16e and the light receiver 20e form a detection region 24e, the light projector 16f and the light receiver 20f form a detection region 24f, and the light projector 16g and the light receiver 20g form a detection region 24g. These detection regions 24c to 24g are formed outside the opening so as to be positioned close to the opening 2 in the substantially same width range of the opening 2 in the vicinity of the floor surface as is apparent from FIGS. . The detection region 24d by the light projector 16d and the light receiver 20d whose optical axis is substantially perpendicular to the floor surface is formed on a vertical line from the sensor 14a toward the floor surface, as is apparent from FIG. The light projectors 16a and 16b and the light receivers 20a and 20b are not used because they form only five detection regions.
[0025]
Similarly, detection areas 26a to 26e corresponding to the detection areas 24c to 24g are also formed on the opposite surface of the door 4 by the sensor 14b. In this case, the light projectors 16a and 16b and the light receivers 20a and 20b are used, and the light projectors 16f and 16g and the light receivers 20f and 20g are not used.
[0026]
A display unit, for example, a display board 28a is attached to one surface of the door 4 approaching the detection region 24d. As the display board 28a, for example, a sticker-like one that prompts the user to approach can be used. The display board 28a is arranged so as to overlap the detection area 24d so that a hand that is going to contact the display board 28a passes through the detection area 24d. The height position of the display board 28a from the floor surface is a height position where a normal touch switch is attached. Similarly, on the opposite surface of the door 4, as shown in FIG. 2, the display board 28 b is arranged so as to overlap with the detection area 26 d so that a hand trying to contact the display board 28 b passes through the detection area 26 d. Yes. In particular, they are arranged so that the optical axes of the projector 16d and the light receiver 20d pass through the display board 28a. In this way, the display portions 28a and 28b are attached to the door 4 so as to overlap the detection areas 24d and 26d formed substantially perpendicular to the floor surface, particularly on the substantially vertical optical axis. Is relatively easy to adjust.
[0027]
Further, a light projecting device 29a and a light receiving device 29b that allow light to pass therethrough are provided on the fixed wall 6 and the edge (not shown) of the opening 2 facing the fixed wall 6 as shown by a dotted line in FIG. The projector 29a and the light receiver 29b are provided as a support sensor which is a kind of safety sensor. This is for detecting a person standing in the door opening 4.
[0028]
In the sliding type automatic door configured as described above, the door controller 12 performs processing as shown in the flowchart of FIG. When the door 4 is in the closed position, the door controller 12 determines whether the sensor 14a or 14b is on, that is, whether a person is detected (step S2). The door controller 12 repeats this step S2 until the result of this determination is yes. For example, when a passerby who wants to open the closed door 4 touches the display board 28a or 28b, his / her hand is detected by the detection region 24d or 26d. As a result, the result of determination in step S2 is yes.
[0029]
When the result of determination in step S2 is “yes”, the door engine 10 is driven in a direction to open the door 4 (step S4). As described above, the sensors 14a and 14b function as activation sensors for activating the door.
[0030]
Next, the door controller 12 determines whether the door 4 has reached the door open position (step S6). For example, although this is not shown, the door engine 10 is provided with an encoder. The door controller 12 measures the position of the door 4 based on the output of the encoder, and the door position corresponds to the door open position. This is done depending on whether the value has been reached. If this determination is NO, the door controller 12 determines whether the sensor 14a or 14b is off (step S10). That is, it is determined whether a passerby is detected. If detected, step S6 is executed again. The loop of steps S6 and S10 is repeated until the door 4 reaches the open position. If the determination in step S6 is yes, since the door 4 is in the door open position (step S8), the door engine 10 is stopped.
[0031]
Then, when step S10 is executed again and it is determined that the sensor 14a or 14b is not off, that is, when a passerby is detected, the loop of steps S6, S8, and S10 is executed. If the determination in step S10 is yes, that is, if the passerby is no longer detected, the door controller 12 activates the built-in open timer and a predetermined time (for example, the time required for the passer to pass through the door). It is determined whether or not elapses (step S12). If this determination is NO, step S12 is repeated until it becomes YES.
[0032]
If the determination in step S12 is yes, the door controller 12 starts door closing drive (step S14). Next, it is determined whether the sensor 28a or 28b is on (step S16). That is, it is determined whether a passerby is detected in any of the detection areas 24c to 24g or 26a to 26e. If this determination is yes, if the door 4 is closed, the door 4 and the passerby collide with each other. Therefore, in order to avoid this, step S4 is executed, and the door 4 is opened again. Accordingly, the sensors 14a and 14b function as safety sensors at this point. As described above, the sensors 14a and 14b function as both a start sensor and a safety sensor although they are a single sensor.
[0033]
If the determination in step S16 is no, that is, the door 4 is closing, and no person is detected in any of the detection areas 24c to 24g and 26a to 26e, the door controller 12 turns on the support sensors 29a and 29b. That is, it is determined whether a person is detected (step S18). If the support sensors 29a and 29b detect a person, there is a possibility that the door 4 and the passerby collide as described above. Therefore, in order to avoid this, step S4 is executed, and the door 4 is opened again.
[0034]
If the determination in step S18 is no, there is no possibility that the passer-by and the door 4 collide even when the door 4 is closed, so the door controller 12 determines whether the door 4 has moved to the door closed position (step S20) If not moving, the loop of steps S14, S16, S18, S20 is repeated until it moves to the closed position. Note that the determination in step S20 is performed by determining whether the door position calculated based on the output of the encoder described above is a value corresponding to the door closing position, for example. If the determination in step S20 is yes, the door 4 is stopped (step S22).
[0035]
In this sliding automatic door, the sensors 14a and 14b function as a start sensor and a safety sensor as described above. In addition, the sensors 14a and 14b are attached to the invisible 8 and form a detection region toward the floor surface, so that a passerby can be reliably detected when used as a safety sensor.
[0036]
6 and 7 show a second embodiment. In this embodiment, since the components are the same as those of the automatic door of the first embodiment, the same parts are denoted by the same reference numerals and the description thereof is omitted.
[0037]
In this automatic door, as shown in FIG. 6 (a), when the door 4 is in the closed position, the detection area used as the activation sensor among the detection areas 24c to 24g and 26a to 26e of the sensors 14a and 14b. Only 24d and 26d are valid. Here, “effective” means that the projector and the light receiver for configuring other detection areas are stopped, and only the projector 16d and the light receiver 20d of the sensors 14a and 14b configuring the detection areas 24d and 26d are operated. Although all the projectors and light receivers are operated, the door controller 12 reacts only to the detection signals from the light receivers 16d of the sensors 14a and 14b, and the detection signals from other light receivers are sent to the door controller 12. May be ignored.
[0038]
Further, as shown in FIG. 6B, when the door 4 is in a position other than the fully closed position, all the detection areas 24c to 24g and 26a to 26e are valid.
[0039]
As shown in the flowchart of FIG. 7, this sliding automatic door operates in substantially the same manner as the flowchart shown in FIG. 5. However, before executing step S2, only the detection areas 24d and 26d of the sensors 14a and 14b are detected. Is validated (step S22). In addition, after step S4, that is, when the door 4 starts moving from the closed position, all the detection areas of the sensors 14a and 14b are validated (step S24), and step S6 is executed.
[0040]
For example, as in the first embodiment, if all the detection areas are always valid, when the door 4 is in the closed position, a person who does not intend to pass and stands simply in the vicinity of the opening 2 may also be sensors 14a and 14b. May be detected, the door 4 is opened, and the door 4 may be opened and closed unnecessarily. However, in the second embodiment, when the door 4 is in the closed position, only the detection areas 24d and 26d are valid. Since the person who intends to pass through touches the display unit 28a or 28b, it can be detected by the sensors 14a and 14b. A person who does not intend to pass and stands in the vicinity of the opening 2 is hardly detected because only the detection areas 24d and 26d are effective. Therefore, unnecessary opening and closing of the door 4 does not occur. In addition, when the door 4 is in a position other than the closed position, all detection areas are valid. Therefore, when a person stands near the door 4, the door 4 is not closed, and the door 4 and the person Can be prevented from contacting.
[0041]
6B, when the door 4 is at a position other than the closed position, the detection area can be expanded in a direction perpendicular to the door surface of the door 4, for example, in the depth direction. By expanding the detection area in this way, the range in which a passer-by can be detected is expanded, and the door 4 can be opened while the passer-by is not too close to the door 4, thereby further ensuring the safety of the passer-by. can do.
[0042]
In order to enlarge the detection area, for example, the projectors 16a to 16g and the light receivers 20a to 20g are arranged in a plurality of rows, for example, two rows in a direction perpendicular to the door surface of the door 4, and the door 4 is in the closed position. When the detection area formed by the light projectors 16d and light receivers 20d in the row close to the door 4 is enabled, and formed by all the light projectors and light receivers in a plurality of rows when the door 4 is in a position other than the closed position All the detected areas may be validated.
[0043]
FIG. 8 shows a sliding automatic door according to the third embodiment. In this sliding automatic door, the detection area used as the activation sensor is changed to a detection area on the door end side of the door 4. With this change, the mounting positions of the sensors 14a and 14b are changed to the fixed wall 6 side. In order to form a detection region in the width of the opening in accordance with a change in the mounting position of the sensors 14a and 14b, six detection regions 24b to 24g are formed in order from the door end side. Since other configurations are the same as those of the first or second embodiment, the same parts are denoted by the same reference numerals, and the description thereof is omitted.
[0044]
As described above, the mounting positions of the sensors 14a and 14b are changed to the center side, which is advantageous in terms of design.
[0045]
FIG. 9 shows a sliding automatic door according to the fourth embodiment. In this sliding type automatic door, the detection areas formed in front of the display units 28a and 28b are a plurality of, for example, three detection areas 24h, 24i, and 24j. These detection regions 24h, 24i, and 24j are formed so as to partially overlap with adjacent ones. That is, the detection area 24h partially overlaps with the detection area 24i, the detection area 24i partially overlaps with the detection areas 24h and 24j, and the detection area 24j partially overlaps with the detection area 24i. Therefore, there is no gap between the detection areas 24h, 24i, and 24j.
[0046]
Since the display portions 28a and 28b are attached to the surface of the door 4 behind the overlapping detection areas 24h, 24i and 24j in this way, even if the attachment position is not strictly adjusted, If even the positions corresponding to these detection areas 24h, 24i, and 24j are attached, it is possible to detect the hand of a passerby who tries to contact the display portions 28a and 28b.
[0047]
For example, it is conceivable that the display unit 28a is enlarged in FIG. 1 and the display unit 28a is provided so as to extend over a plurality of detection regions, for example, the detection regions 24c, 24d, and 24e. However, in this case, a gap exists between the detection areas 24c, 24d, and 24e. Various methods are conceivable for a person to come into contact with the display unit 28a, such that the display unit 28a is in contact with the enlarged display unit 28a through the gap between the detection regions 24c and 24d or the gap between the detection regions 24d and 24e. There may be a person. In such a case, the door 4 is not opened although the passerby is in contact with the display unit.
[0048]
However, in the case of the automatic door shown in FIG. 9, the detection areas overlap each other, so there is no gap between the detection areas, and the passer's hand can be surely handled regardless of how the passer touches the display unit. Can be detected. Moreover, since it is not necessary to enlarge the display part 28a, the appearance is also good. In order to overlap the detection areas, in the sensors 14a and 14b, for example, if the detection areas 24h, 24i, and 24j are formed by the projectors 16c, 16d, and 16e, and the light receivers 20c, 20d, and 20e, the projectors 16c, 16d, and 16e The intervals and the intervals between the light receivers 20c, 20d, and 20e may be made smaller than those shown in FIG. As in the second embodiment, when the door 4 is in the closed position, only the detection areas 24h, 24i, and 24j are valid, and when the door 4 is in the open position, all the detection areas are valid. Good.
[0049]
FIG. 10 shows a sliding automatic door according to the fifth embodiment. This automatic door is configured in the same manner as the sliding automatic door of the fourth embodiment, except that the detection areas 24h, 24i, and 24j that partially overlap each other are changed to the door end side. Equivalent parts are denoted by the same reference numerals and description thereof is omitted. In this case, since the detection areas that partially overlap each other are used, the mounting adjustment of the display unit is easy, and the mounting positions of the sensors 14a and 14b are changed to the fixed wall 6 side. It is advantageous. Also in this embodiment, as in the second embodiment, when the door 4 is in the closed position, only the detection areas 24h, 24i, and 24j are valid, and when the door is in the open position, all the detection areas are set. It may be effective.
[0050]
In the slide type automatic door of each of the embodiments described above, the single door 4 is used as the door, but a double door can also be used. Further, although a reflective optical sensor is used as the sensor, a pyroelectric sensor can be used, and a distance detection type sensor can also be used. Moreover, in said embodiment, although sensor 14a, 14b was provided in both the door surfaces of the door 4, you may arrange | position the sensor 14a or 14b only in one door surface.
[0051]
【The invention's effect】
As described above, the slide type automatic door according to the present invention can be used as a start sensor and a safety sensor even though it is a single sensor, and the cost of the slide type automatic door can be reduced. Moreover, since this sensor forms a detection region from the top to the bottom of the door, when used as an activation sensor, it is possible to reliably detect the passerby's hand trying to contact the display unit. Even when used as a safety sensor, a wide detection area can be secured, a person standing in the vicinity of the opening can be reliably detected, and safety can be ensured.
[Brief description of the drawings]
FIG. 1 is a front view of a sliding automatic door according to a first embodiment of the present invention.
FIG. 2 is a side view of the automatic door of FIG.
FIG. 3 is a plan view of the automatic door of FIG. 1;
4 is a schematic configuration diagram of a sensor used in the automatic door of FIG. 1. FIG.
FIG. 5 is a flowchart of control performed by the door controller of the automatic door of FIG.
FIG. 6 is a plan view showing a change in the detection area of the sliding automatic door according to the second embodiment of the present invention.
7 is a flowchart of control performed by the door controller of the automatic door of FIG.
FIG. 8 is a front view of a sliding automatic door according to a third embodiment of the present invention.
FIG. 9 is a front view of a sliding automatic door according to a fourth embodiment of the present invention.
FIG. 10 is a front view of a sliding automatic door according to a fifth embodiment of the present invention.
[Explanation of symbols]
2 opening
4 Door
14a 14b sensor
24c to 24g detection area
26a to 26e detection area
28a 28b Display section (display section)

Claims (4)

A slidable door that opens and closes an opening for passers-by;
A display unit provided at a position where the passerby contacts the door surface of the door;
A sensor that is installed above the opening and sets a plurality of detection ranges including a detection range in the vicinity of the front of the display unit in the same range as the width of the opening along the vicinity of the opening;
The one sensor comprises:
A plurality of light projectors for irradiating light beams and a plurality of light receivers for receiving reflected light of the light beams, the light projectors and the light receivers form the plurality of detection ranges, and the door closes the opening. The door is opened when an object is detected in these detection ranges, and the door is open when the door is open and the object is not detected in the detection range. A sliding type in which only the detection range near the front of the display unit is valid when the door is closed and the door is located at the closed position, and all the detection ranges are valid when the door is located at a position other than the closed position. Automatic door.   2. The sliding automatic door according to claim 1, wherein in the state in which the door is located at a position other than the closed position, the one sensor is configured to set the plurality of detection ranges to be greater than the state in which the door is located at the closed position. A sliding automatic door that expands in the depth direction away from the surface with the same width as the opening.   The sliding automatic door according to claim 1 or 2, wherein adjacent ones of the detection ranges overlap in front of the display unit.   3. The sliding automatic door according to claim 1, wherein a detection range in the vicinity of the front of the display unit is determined by a light emitting / receiving device near the center disposed substantially perpendicular to the floor surface among the plurality of light emitting / receiving devices. Sliding automatic door set.

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