JP7084802B2 - Shutter device - Google Patents

Description

The present invention relates to a shutter device.

Conventionally, a shutter device for detecting a lateral displacement of a shutter curtain has been known. Patent Documents 1 to 4 disclose this type of shutter device.

Patent Document 1 describes a shutter device in which a detection sensor such as a limit switch is arranged at an appropriate position on the inner surface of a bracket supporting a take-up drum, and an alarm is issued when the detection sensor detects a cross flow of a slat. There is. Patent Documents 2 and 3 include a switchgear that closes by partitioning a space, and when a part or all of the switchgear is displaced in one direction in the width direction of the opening / closing body, the displaced portion is on one side. In the switchgear that is detected by the shift detection unit, one of the switchgear has a configuration for detecting the shift in the width direction of the switchgear at the portion around the axis or a relatively close portion, and the shift in both directions. The configuration for detecting only on the side is described. Also in Patent Document 4, a lateral displacement detecting means provided at a position close to the left and right ends of a shutter curtain wound around a winding member and detecting lateral displacement of slats or lateral displacement of the entire shutter curtain. A shutter device equipped with the above is described.

Jitsukaihei 4-125399 Gazette Japanese Unexamined Patent Publication No. 2012-241342 Japanese Unexamined Patent Publication No. 2012-241343 Japanese Unexamined Patent Publication No. 2005-16508

By the way, even if an abnormality occurs in the shutter device, the response differs depending on the degree of the abnormality. For example, if the slat of the shutter curtain is largely misaligned and the degree of abnormality is high, it may be necessary to stop the shutter device and take an emergency response, and it is judged that the degree of abnormality in the slat is low. If so, it may be better to allow the shutter to open and close under certain conditions. In this respect, although the conventional technique can detect lateral displacement of slats, it is not possible to grasp the degree of abnormality.

An object of the present invention is to provide a shutter device capable of taking an appropriate response according to the degree of abnormality by detecting an abnormal state in which the slats deviate from an appropriate position step by step.

The present invention comprises a shutter curtain composed of a plurality of slats (for example, the slats 121 described later) (for example, the shutter curtain 12 described later) and a winding unit capable of winding the shutter curtain (for example, winding described later). The device 13), a drive unit that rotationally drives the take-up unit to wind up or unwind the shutter curtain (for example, a motor 141 described later), and an operation unit that can instruct winding or unwinding of the drive unit (for example, a motor 141 described later). For example, an operation device 16) described later, a control unit (for example, a control panel 15 described later) that controls the drive unit based on an instruction from the operation unit, and the slats to one side in the width direction of the shutter curtain. A first abnormality detecting unit (for example, a first abnormality detecting sensor 31 described later) that detects a relatively small displacement, and a second that detects a relatively large displacement of the slats to one side in the width direction of the shutter curtain. The present invention relates to a shutter device (for example, a shutter device 1 described later) including an abnormality detection unit (for example, a second abnormality detection sensor 32 described later).

It is preferable that the first abnormality detecting unit is a non-contact type sensor arranged on the side closer to the slats than the second abnormality detecting unit, and the second abnormality detecting unit is a contact type sensor.

The shutter device further includes a guide rail (for example, a guide rail 11 described later) that guides the movement of the shutter curtain unwound from the winding unit, and the first abnormality detecting unit and the second abnormality detecting unit include the first abnormality detecting unit and the second abnormality detecting unit. It is preferably arranged between the winding portion and the guide rail.

The shutter device is arranged on one side in the axial direction of the winding unit together with the first abnormality detecting unit and the second abnormality detecting unit, and detects the displacement of the slats to one side in the width direction of the shutter curtain. 3 It is preferable to further include an abnormality detection unit.

It is preferable that the shutter device further includes a notification device capable of stepwise distinguishing and notifying the degree of abnormality based on the detection results of the first abnormality detection unit and the second abnormality detection unit.

The control unit determines the degree of abnormality based on the detection results of the first abnormality detection unit and the second abnormality detection unit, and if the degree of abnormality is high, stops driving the drive unit and causes an abnormality. When the degree is low, it is preferable to drive the drive unit on condition that a predetermined operation preset in the operation unit is performed.

The shutter device has a third abnormality detecting unit that detects a relatively small displacement of the slats to the other side in the width direction of the shutter curtain, and a relatively large slats to the other side in the width direction of the shutter curtain. It is preferable that the fourth abnormality detecting unit for detecting the displacement is further provided, and the first abnormality detecting unit to the fourth abnormality detecting unit are arranged on one side in the axial direction of the winding unit.

It is preferable that at least one of the first abnormality detecting unit to the fourth abnormality detecting unit is held by a sensor holder whose position in the axial direction of the winding unit can be adjusted.

According to the shutter device of the present invention, by detecting an abnormal state in which the slats deviate from the proper position step by step, it is possible to take an appropriate response according to the degree of the abnormality.

It is a schematic diagram of the shutter device which concerns on one Embodiment of this invention. It is a figure which looked at the state of the winding device provided in the shutter device of this embodiment and the vicinity thereof in the axial direction of a winding shaft. It is a top view which shows the positional relationship of the sensor holder, the 1st abnormality detection sensor and the 2nd abnormality detection sensor of this embodiment. It is a side view which shows the positional relationship of the sensor holder, the 1st abnormality detection sensor and the 2nd abnormality detection sensor of this embodiment. It is a block diagram which shows the electric structure of the shutter device of this embodiment. It is a flowchart which shows the process based on the abnormality detection of the 1st abnormality detection sensor of this embodiment. It is a flowchart which shows the process based on the abnormality detection of the 2nd abnormality detection sensor of this embodiment. It is a figure which looked at the state of the winding device provided in the shutter device of 2nd Embodiment and the vicinity thereof in the axial direction of a winding shaft. It is a top view which showed schematic the positional relationship of the 1st abnormality detection sensor with respect to the guide rail in 2nd Embodiment. It is a top view which showed schematic the positional relationship of the 2nd abnormality detection sensor with respect to the guide rail in 2nd Embodiment. It is a top view which shows the positional relationship of the sensor holder, the 1st abnormality detection sensor and the 2nd abnormality detection sensor of 3rd Embodiment. It is a side view which shows the positional relationship of the sensor holder of 3rd Embodiment, the 1st abnormality detection sensor and the 2nd abnormality detection sensor. It is a figure which looked at the state of the 1st abnormality detection sensor to the 4th abnormality detection sensor and the vicinity thereof of 4th Embodiment in the axial direction of a winding shaft. It is a side view which shows the positional relationship of the sensor holder of 4th Embodiment, the 1st abnormality detection sensor to the 4th abnormality detection sensor. It is a side view which shows the positional relationship of the sensor holder of 4th Embodiment, the 1st abnormality detection sensor to the 4th abnormality detection sensor. It is a front view which showed the positional relationship of the reflector included in the 5th abnormality detection sensor of 4th Embodiment.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of a shutter device 1 according to an embodiment of the present invention.

First, the overall configuration of the shutter device 1 will be described. The shutter device 1 of the present embodiment includes a guide rail 11, a shutter curtain 12, a case 20, an interlocking repeater 21, a winding device 13, a drive device 14, a control panel 15, an operation device 16, and the like. It is configured to include a notification device 17.

The guide rails 11 are arranged on the left and right sides of the shutter curtain 12. The guide rail 11 has a substantially U-shaped cross section, and guides the left and right ends of the shutter curtain 12 that moves up and down at a portion corresponding to the inside of the U-shape.

The shutter curtain 12 is configured by connecting a plurality of slats 121 in the vertical direction. By ascending / descending the shutter curtain 12 while being guided by the guide rail 11, the opening / closing of the building opening is performed.

The case 20 accommodates a winding device 13 and the like for winding the shutter curtain 12. The interlocking repeater 21 supplies power to the automatic closing device 150 until the shutter curtain 12 is fully closed via an interlocking controller (not shown) such as a sensor.

The winding device 13 is a device for winding / feeding the shutter curtain 12. FIG. 2 is a side view showing the state of the winding device 13 and its vicinity, and the illustration of a part of the configuration of the case 20 and the like is omitted.

The take-up device 13 includes a take-up shaft 131 that is rotationally driven by the drive device 14, and a take-up drum 132 that can take up the shutter curtain 12.

Bearing brackets 135 are arranged on the left and right sides of the shutter device 1, and the take-up shaft 131 is rotatably supported on the bearing bracket 135 via a bearing having substantially the same diameter as the take-up drum 132 (not shown). The axis of the take-up drum 132 coincides with the axis of the take-up shaft 131, and the take-up drum 132 rotates integrally with the take-up shaft 131. The upper end of the shutter curtain 12 is fixed to the peripheral surface of the take-up drum 132. Reference numeral 136 in FIG. 2 is a line indicating a state (maximum winding diameter) in which the slats 121 (shutter curtain 12) are all wound around the winding shaft 131.

When the take-up shaft 131 rotates in a predetermined direction (wind-up direction), the shutter curtain 12 is taken up by the take-up drum 132, and the opening of the building is opened. When the take-up shaft 131 rotates in the direction opposite to the predetermined direction, the shutter curtain 12 is unwound from the take-up drum 132, and finally the opening is closed.

The drive device 14 includes a motor (drive unit) 141 as a switch and a transmission mechanism 143 that mechanically transmits the rotational force of the motor 141 to the take-up shaft 131.

The transmission mechanism 143 is wound around a motor-side sprocket 144 connected to the output shaft of the motor 141, a take-up side sprocket 145 connected to the take-up shaft 131, a motor-side sprocket 144, and a take-up side sprocket 145. A roller chain 146 and a roller chain 146 are provided. The rotational force of the motor 141 is transmitted to the take-up shaft 131 via the motor side sprocket 144, the roller chain 146, and the take-up side sprocket 145.

The control panel 15 has a control circuit that controls the drive of the motor 141 based on the signal input from the operating device 16. The operating device 16 is electrically connected to the control panel 15. The control panel 15 controls the operation of the shutter curtain 12 based on the operation signal of the operation device 16. Further, in addition to the control of the shutter device 1, it also has a circuit for outputting a detection signal or an alarm signal due to an abnormality in the shutter device 1.

The notification device 17 is a means for notifying the user or the operator of the abnormality of the shutter device 1. The notification device 17 of the present embodiment has a power light 171 indicating that the power is on, a warning light 172 indicating that the shutter device 1 is in an abnormal state, and a caution light 173 indicating a sign that the shutter device 1 is in an abnormal state. The cord disconnection lamp 174 indicating that the cord disconnection has occurred, and the operation enable / disable lamp 175 indicating that the shutter device 1 can be operated are provided.

Next, a means for detecting an abnormal state of the shutter device 1 will be described. As shown in FIG. 2, the shutter device 1 detects an abnormality in the shutter device 1 by the sensor holder 30, the first abnormality detection sensor 31 fixed to the sensor holder 30, and the second abnormality detection sensor 32. Prepare as a means to do.

A configuration for detecting an abnormality including the first abnormality detection sensor 31 and the second abnormality detection sensor 32 is arranged on each of the left and right bearing brackets 135. In the following description, the first abnormality detection sensor 31 and the second abnormality detection sensor 32 arranged on one side in the left-right direction will be described. The first abnormality detection sensor 31 and the second abnormality detection sensor 32 arranged on the other side in the left-right direction have the same configuration.

FIG. 3 is a plan view showing the positional relationship between the sensor holder 30, the first abnormality detection sensor 31, and the second abnormality detection sensor 32 of the present embodiment, and FIG. 4 shows the sensor holder 30, the first abnormality detection sensor. It is a side view which shows the positional relationship of 31 and the 2nd abnormality detection sensor 32.

The sensor holder 30 is fixed to the inner surface of the bearing bracket 135. The sensor holder 30 of the present embodiment has a substantially U-shaped shape in a plan view, and the U-shaped opening side faces the shutter curtain 12 side.

The first abnormality detection sensor 31 is for carefully detecting a small deviation in the lateral direction (width direction of the shutter curtain 12) from the normal position of the slat 121 (shutter curtain 12) toward the bearing bracket 135 side (FIG. FIG. See chain line 4). The first abnormality detection sensor 31 is fixed to the tip end side (center side of the shutter device 1) of the sensor holder 30.

The first abnormality detection sensor 31 of the present embodiment is a transmissive photoelectric sensor including a light projecting unit 31a and a light receiving unit 31b. The light emitting unit 31a and the light receiving unit 31b are held by the sensor holder 30 so as to face each other in the thickness direction (expected direction) of the shutter curtain 12. When the slats 121 are inserted inside the sensor holder 30 and the optical path 31c connecting the light emitting unit 31a and the light receiving unit 31b is blocked, the first abnormality detection sensor 31 transmits a detection signal to the control panel 15.

The second abnormality detection sensor 32 is for warning detection of a large deviation in the lateral direction (width direction of the shutter curtain 12) from the normal position of the slat 121 (shutter curtain 12) toward the bearing bracket 135 side (FIG. FIG. See chain line 4). The second abnormality detection sensor 32 is fixed to the base end side (bearing bracket 135 side) of the sensor holder 30.

The second abnormality detection sensor 32 of the present embodiment is a contact-type tactile sensor including a tactile sensor 32a and a switch portion 32b. The tactile element 32a is held by the sensor holder 30 so as to be located on the bearing bracket 135 side with respect to the optical path connecting the light emitting portion 31a and the light receiving portion 31b. The second abnormality detection sensor 32 transmits a detection signal to the control panel 15 when the slats 121 inside the sensor holder 30 come into contact with the tactile sensor 32a and receive pressure.

The detection position of the second abnormality detection sensor 32 (position of the tactile sensor 32a) is closer to the bearing bracket 135 than the guide rail 11 in a plan view, and the shutter curtain 12 continues to be in contact with the inner surface of the guide rail 11. It is possible to detect such an abnormal state. On the other hand, the detection position (optical path 31c) of the first abnormality detection sensor 31 is located at a position farther from the inner surface of the bearing bracket 135 than the second abnormality detection sensor 32 in the left-right direction, so that the second abnormality detection sensor 31 The deviation of the slats 121 toward the bearing bracket 135 side is detected before 32. A small displacement of the slat 121 (hereinafter referred to as a small displacement) is detected by the first abnormality detection sensor 31 before a large displacement (hereinafter referred to as a large displacement) of the slat 121 detected by the second abnormality detection sensor 32 is detected. Therefore, it is possible to detect signs of becoming abnormal.

FIG. 5 is a block diagram showing an electrical configuration of the shutter device 1 of the present embodiment. As shown in FIG. 5, the control panel 15 to which the operation signal from the operation device 16 is input outputs the operation signal to the motor 141 based on the operation signal. In the present embodiment, the drive control of the motor 141 by the control panel 15 is performed based on the detection signals of the first abnormality detection sensor 31 and the second abnormality detection sensor 32.

FIG. 6 is a flowchart showing a process based on the abnormality detection of the first abnormality detection sensor 31 of the present embodiment. When the control panel 15 detects that the push button of the operating device 16 is pressed while the shutter curtain 12 is in the upper limit position (fully open position) or the lower limit position (closed position), the process shifts to the drive control of the motor 141 (step S101). ). The control panel 15 outputs an operation signal to the motor 141 so that the shutter operation for winding or extending the shutter curtain 12 is started (step S102).

After the shutter operation is started, the control panel 15 detects a small displacement based on the detection signals of the first abnormality detection sensor 31 and the second abnormality detection sensor 32 (step S103).

In the present embodiment, it is determined that a small displacement occurs when the detection signal of the first abnormality detection sensor 31 is ON and the detection signal of the second abnormality detection sensor 32 is OFF. Therefore, when the detection signal of the first abnormality detection sensor 31 is OFF, the small displacement is not detected. Further, in the present embodiment, when the detection signal of the first abnormality detection sensor 31 is ON and the detection signal of the second abnormality detection sensor 32 is ON, the process proceeds to the process of step S111, where a large displacement is performed. It is a flow to detect.

When a small displacement is detected in the process of step S103, the control panel 15 stops driving the motor 141 to stop the shutter operation and turns on the caution light 173 (step S104, step S105). Then, the process shifts to push-off operation control (step S106). The push-off operation referred to here is a state in which the shutter operates only while the push button of the operating device 16 is continuously pressed. In this state, it is detected whether or not the signal has been restored based on the detection signal of the first abnormality detection sensor 31 (step S107). The processes of steps S104 to S107 are repeated until signal recovery is detected in step S107.

When signal recovery is detected in the process of step S107, the process shifts to the process of turning off the caution light 173 (step S108). Even after the caution light 173 is turned off, the push-off operation is continued (step S109).

Next, it is detected whether or not the abnormality has been removed, and if the abnormality has not been removed, the process returns to the process of step S104 and the processes after step S105 are repeated (step S110). When it is detected that the abnormality has been removed in step S110, the process returns to the process of step S101. It should be noted that the abnormality removal is performed by maintenance work, repair, or the like. As a method for detecting that the abnormality has been removed, an appropriate means can be used. For example, the configuration may be such that the operator performs a predetermined operation on the switch (not shown) inside the control panel 15 or the operation device 16.

FIG. 7 is a flowchart showing a process based on the abnormality detection of the second abnormality detection sensor 32 of the present embodiment. If the small displacement in step S103 is not detected, or if it is determined that the abnormality has been removed by the abnormality removal in step S110, the process proceeds to step S111. In step S111, a large displacement is detected based on the detection signals of the first abnormality detection sensor 31 and the second abnormality detection sensor 32. In the present embodiment, it is determined that the displacement is large when at least the detection signal of the second abnormality detection sensor 32 is ON. That is, it is determined that a large displacement occurs even when the detection signals of both the first abnormality detection sensor 31 and the second abnormality detection sensor 32 are ON, or when only the second abnormality detection sensor 32 is ON. Will be done.

When a large displacement is detected in the process of step S111, the shutter operation stop control for stopping the winding or feeding of the shutter curtain 12 is performed and the warning light 172 is turned on (step S112, step S113). Then, the process shifts to the non-operation state control (step S114). In this non-operating state, the operation for operating the shutter is not accepted.

In step S115, it is determined whether or not the signal is restored based on the detection signals of the first abnormality detection sensor 31 and the second abnormality detection sensor 32 in the non-operating state. Here, when the detection signals of both the first abnormality detection sensor 31 and the second abnormality detection sensor 32 are turned off, it is determined that the signal is restored. If it is not determined in step S115 that the signal is restored, the processes of steps S113 to S115 are repeated.

When it is determined in the process of step S115 that the signal is restored, the warning light 172 is turned off and the non-operation state is continued (step S116, step S117). Then, it is determined whether or not the abnormal recovery is performed in the state where the non-operation state of step S117 is continued (step S118). If it is determined in the process of step S118 that the abnormal recovery has not been performed, the processes of steps S113 to S118 are repeated.

When it is determined that the abnormal recovery has been performed in the process of step S118, the process returns to the process of step S101. Abnormal recovery is performed by maintenance work, repairs, and the like. As a method for detecting that an abnormal recovery has been performed, an appropriate means can be used. For example, the configuration may be such that the operator performs a predetermined operation on the switch (not shown) inside the control panel 15 or the operation device 16.

If it is determined in the process of step S118 that the abnormality has been recovered, the process returns to the process of step S101, and the operation from the operation device 16 is accepted. The flow ends when the shutter curtain 12 reaches the lower limit position (closed position) or the upper limit position (open position).

According to the above embodiment, the following effects are obtained.
The shutter device 1 rotates and drives the shutter curtain 12 composed of a plurality of slats 121, the take-up drum 132 capable of winding the shutter curtain 12, and the take-up drum 132 to wind or unwind the shutter curtain 12. A motor 141, an operating device 16 capable of instructing winding or feeding, a control panel 15 that controls the motor 141 based on the instructions of the operating device 16, and a slat in the width direction (horizontal direction) of the shutter curtain 12. A first abnormality detection sensor 31 that detects a relatively small displacement of the 121, and a second abnormality detection sensor 32 that detects a relatively large displacement of the slat 121 to one side in the width direction (lateral direction) of the shutter curtain 12. , Equipped with.

As a result, it becomes possible to detect the lateral displacement of the slats 121 step by step, and it is possible to take appropriate measures according to the degree of abnormality. In addition, although it is not necessary to make an emergency stop at this stage, signs of an abnormality that may cause a failure if left unattended can be detected. Therefore, the cause of the failure can be determined in advance by performing maintenance before the shutter curtain 12 is damaged due to lateral displacement of the slats 121. Can be removed.

Further, as in the present embodiment, the first abnormality detection sensor 31 is a non-contact type sensor arranged on the side closer to the slat 121 than the second abnormality detection sensor 32, and the second abnormality detection sensor 32 is a non-contact type sensor. Contact type sensors are preferred.

As a result, since the first abnormality detection sensor 31 is a non-contact type, the first abnormality detection sensor 31 and the shutter curtain 12 (slat 121) are not in contact with each other even when a small displacement is detected, so that the first abnormality detection is performed. The shutter curtain 12 does not move in a state where the sensor 31 is in contact with the sensor 31, and the first abnormality detection sensor 31 does not break down. Further, since the second abnormality detection sensor 32 is configured by a contact type having a relatively low cost, it is possible to realize a configuration in which the displacement of the slat 121 can be detected stepwise at a low cost.

Further, in the present embodiment, the shutter device 1 further includes a guide rail 11 for guiding the movement of the shutter curtain 12 unwound from the take-up drum 132, and the first abnormality detection sensor 31 and the second abnormality detection sensor 32 are wound. It is arranged between the shutter drum 132 and the guide rail 11.

As a result, the shutter curtain 12 is not guided from the guide rail 11 to the take-up drum 132, so that the first abnormality detection sensor 31 and the second abnormality detection sensor 32 are arranged in the area where the displacement of the slats 121 is likely to occur. Therefore, the displacement of the slats 121 can be detected with high accuracy, and the shutter curtain 12 can be reliably prevented from being damaged.

Further, in the present embodiment, the shutter device 1 further includes a notification device 17 capable of stepwise distinguishing and notifying the degree of abnormality based on the detection results of the first abnormality detection sensor 31 and the second abnormality detection sensor 32.

As a result, the user can quickly grasp the degree of abnormality of the shutter device 1, and an appropriate and prompt response can be taken. In addition, even if the operation method changes depending on the degree of abnormality, it can be grasped.

Further, in the present embodiment, the control panel 15 determines the degree of abnormality based on the detection results of the first abnormality detection sensor 31 and the second abnormality detection sensor 32, and drives the motor 141 when the degree of abnormality is high. If the degree of abnormality is low, the motor 141 is driven on condition that a predetermined operation (operation of continuously pressing down the push button) preset in the operating device 16 is performed.

As a result, the drive of the motor 141 is controlled according to the degree of abnormality, so that the operation of the shutter device 1 is controlled according to the actual situation without excessive control on the safety side.

Next, a second embodiment and a third embodiment in which abnormality detection of the shutter device 1 is performed with a configuration different from that of the above embodiment (first embodiment) will be described. In the description of any of the second and third embodiments, the same or similar configurations as those already described may be designated by the same reference numerals and the description thereof may be omitted.

A second embodiment will be described with reference to FIGS. 8 to 10. FIG. 8 is a view of the winding device 13 included in the shutter device 1 of the second embodiment and its vicinity in the axial direction of the winding shaft 131. FIG. 9 is a plan view schematically showing the positional relationship of the first abnormality detection sensor 231 with respect to the guide rail 11 in the second embodiment, and is a view taken along the line AA of FIG. FIG. 10 is a plan view schematically showing the positional relationship of the second abnormality detection sensor 232 with respect to the guide rail 11 in the second embodiment, and is a view taken along the line BB of FIG. Note that FIGS. 9 and 10 omit the illustration of the configuration of the shutter curtain 12 and the like other than the first abnormality detection sensor 231 and the second abnormality detection sensor 232 and the guide rail 11.

As shown in FIG. 8, in the second embodiment, the first abnormality detection sensor 231 and the second abnormality detection sensor 232 are arranged at positions separated from each other in the vertical direction.

The first abnormality detection sensor 231 is a photoelectric sensor including a light emitting unit 231a and a light receiving unit 231b. The light projecting unit 231a is fixed to the bearing bracket 135 via the sensor holder 241. The light receiving portion 231b is fixed to the bearing bracket 135 via the sensor holder 242 and the holding hardware 243. In the present embodiment, the optical path 231c connecting the light emitting unit 231a and the light receiving unit 231b is set to pass at or near the highest position of the take-up drum 132.

The second abnormality detection sensor 232 is a photoelectric sensor including a light emitting unit 232a and a light receiving unit 232b. The light projecting unit 232a is fixed to the bearing bracket 135 via the sensor holder 251. The light receiving portion 232b is fixed to the bearing bracket 135 via the sensor holder 252 and the holding hardware 243. In the present embodiment, the optical path 232c connecting the light emitting unit 232a and the light receiving unit 232b is set to pass at or near the lowest position of the take-up drum 132.

Further, as shown in FIGS. 9 and 10, the optical path 231c of the first abnormality detection sensor 231 is located closer to the guide rail 11 than the optical path 232c of the second abnormality detection sensor 232 (line segment α in FIG. 9). And α <β holds for the line segment β in FIG. 10). Therefore, the first abnormality detection sensor 231 detects a relatively small displacement (small displacement) of the slat 121 toward the bearing bracket 135 side, and the second abnormality detection sensor 232 detects the relative to the bearing bracket 135 side of the slat 121. A large deviation (large displacement) will be detected.

Further, in the second embodiment, the sensor holder 241 is formed with a notch portion 241a, and the notch portion 241a holds the light projecting portion 231a. Further, a notch portion 242a is formed in the sensor holder 242, and a light receiving portion 231b is held in the notch portion 242a. Similarly, the sensor holder 251 is formed with a notch 251a in which the light projecting portion 232a is held, and the sensor holder 252 is formed with a notch 252a in which the light receiving portion 232b is held. Each of the cutout portions 241a, 242a, 251a, and 252a is cut out from the center side in the left-right direction to the bearing bracket 135 side, and the optical path 231c of the first abnormality detection sensor 231 and the optical path 232c of the second abnormality detection sensor 232. The position can be changed by the mounting positions of the light emitting unit 231a (light emitting unit 232a) and the light receiving unit 231b (light receiving unit 232b).

The same effect as that of the first embodiment can be obtained by the configuration of the second embodiment described above. Further, in the second embodiment, it is possible to detect the deviation of the slats 121 that occurs above and below the take-up drum 132.

In the first embodiment and the second embodiment, the displacement of the slats 121 to the right side is stepwise by the first abnormality detection sensor and the second abnormality detection sensor arranged on the right side (one side) of the take-up drum 132. The configuration is such that the displacement of the slat 121 to the left side is gradually detected by the first abnormality detection sensor and the second abnormality detection sensor arranged on the other side (left side), but the configuration is not limited to this. Next, a third embodiment in which both left and right deviations can be detected by the configuration arranged on one side of the take-up drum 132 in the left-right direction will be described.

FIG. 11 is a plan view showing the positional relationship between the sensor holder 330, the first abnormality detection sensor 31, the second abnormality detection sensor 32, and the third abnormality detection sensor 331 according to the third embodiment. FIG. 12 is a side view showing the positional relationship between the sensor holder 330, the first abnormality detection sensor 31, the second abnormality detection sensor 32, and the third abnormality detection sensor 331 according to the third embodiment.

As shown in FIGS. 11 and 12, in the third embodiment, in addition to the first abnormality detection sensor 31 and the second abnormality detection sensor 32 of the first embodiment, the third abnormality detection sensor 331 is used as the abnormality detection means. Be placed.

In the third embodiment, the first abnormality detection sensor 31 is for cautionally detecting a relatively small right deviation, and the second abnormality detection sensor 32 is for warning detection of a relatively large right deviation. It is a thing.

The third abnormality detection sensor 331 is a photoelectric sensor including a light projecting unit 331a and a light receiving unit 331b, and carefully detects the left side deviation (see the chain line in FIG. 12). The light emitting unit 331a and the light receiving unit 331b are held by the sensor holder 330 so as to sandwich the slats 121 at appropriate positions in the thickness direction (expected direction) of the shutter curtain 12. The optical path 331c connecting the light projecting unit 331a and the light receiving unit 331b is set so as to pass through the center side of the end portion of the slat 121 at an appropriate position on the bearing bracket 135 side.

Therefore, no abnormality or failure has occurred, and the optical path 331c of the light projecting unit 331a and the light receiving unit 331b will continue to be blocked when the slat 121 is in an appropriate position. In the third abnormality detection sensor 331, the state in which the slat 121 blocks the optical path 331c is normal, and the state in which the optical path 331c is not blocked is detected as an abnormality. In this configuration, when the slat 121 moves to the center side in the left-right direction (the side away from the bearing bracket 135 in the vicinity), there is nothing blocking the optical path 331c of the third abnormality detection sensor 331 (slat 121), and the light projecting unit 331a and the slat 121 The light receiving unit 331b is in a facing state. This abnormal state is sent to the control panel 15, and the same processing as in the first embodiment is performed.

The shutter device 1 of the third embodiment described above is arranged on one side in the axial direction of the take-up drum 132 together with the first abnormality detection sensor 31 and the second abnormality detection sensor 32, and is arranged on the other side in the axial direction of the slats 121 (shutter). A third abnormality detection sensor 331 that detects the displacement of the curtain 12 in the width direction to the other side) is further provided.

As a result, the same effect as that of the first embodiment described above can be obtained, and the configuration for detecting the displacement of the slats 121 in the left-right direction can be integrated on one side (one side in the axial direction) of the take-up drum 132, so that the wiring can be routed. Can be simplified and the efficiency of maintenance work can be improved.

Next, a fourth embodiment for detecting an abnormality in the shutter device 1 with a configuration different from that of the first to third embodiments described above will be described. In the description of the fourth embodiment, the same or similar configurations as those already described may be designated by the same reference numerals and the description thereof may be omitted.

A fourth embodiment will be described with reference to FIGS. 13 to 16. FIG. 13 is a view of the first abnormality detection sensor to the fourth abnormality detection sensor included in the shutter device 1 of the fourth embodiment and their vicinity in the axial direction of the take-up shaft. FIG. 14 is a side view schematically showing the positional relationship of the light emitting / receiving unit included in the sensor holder of the fourth embodiment and the first abnormality detection sensor to the fifth abnormality detection sensor, and is a side view showing A- It is an A line arrow view. FIG. 15 is a side view schematically showing the positional relationship of the sensor holder of the fourth embodiment and the reflectors included in the first abnormality detection sensor to the fourth abnormality detection sensor, and FIG. 15B is a side view schematically showing the positional relationship of the reflectors. It is a line arrow view. FIG. 16 is a front view schematically showing the positional relationship of the reflector included in the fifth abnormality detection sensor of the fourth embodiment.

In the fourth embodiment, the first abnormality detection sensor (first abnormality detection unit) 431, the second abnormality detection sensor (second abnormality detection unit) 432, and the third abnormality detection sensor are located on one side of the take-up drum 132 in the axial direction. All of the (third abnormality detection unit) 433 and the fourth abnormality detection sensor (fourth abnormality detection unit) 434 are installed, and these first abnormality detection sensors 431 to the fourth abnormality detection sensor 434 are used in the width direction of the shutter curtain 12. Detects relatively small and large displacements of the slat 121 to both one side and the other side.

More specifically, at the lower end of any one of the bearing brackets 135 installed on the left and right sides of the shutter device 1, a holding metal fitting 410 having the thickness direction of the shutter curtain 12 as the longitudinal direction is installed, and the holding metal fitting 410 is installed in the longitudinal direction. At the end, the sensor holder 430a, the sensor holder 430b, and the sensor holder 430c face each other so as to sandwich the longitudinal direction and are fixed to the holding hardware 410 in a posture of hanging from the holding hardware 410.

The first abnormality detection sensor 431 includes a light emitting / receiving unit 431a and a reflecting plate 431b, and the light emitting / receiving unit 431a is fixed to the sensor holder 430a and the reflecting plate 431b is fixed to the sensor holder 430c. The second abnormality detection sensor 432 includes a light emitting / receiving unit 432a and a reflecting plate 432b, and the light receiving / receiving unit 432a is fixed to the sensor holder 430a and the reflecting plate 432b is fixed to the sensor holder 430c. The third abnormality detection sensor 433 includes a light emitting / receiving unit 433a and a reflecting plate 433b, and the light receiving / receiving unit 433a is fixed to the sensor holder 430b and the reflecting plate 433b is fixed to the sensor holder 430c. The fourth abnormality detection sensor 434 includes a light emitting / receiving unit 434a and a reflecting plate 434b, and the light receiving / receiving unit 434a is fixed to the sensor holder 430b and the reflecting plate 434b is fixed to the sensor holder 430c. The light emitting and receiving units 431a to 434a are light receiving and receiving devices having a function of irradiating the beam and a function of detecting the light receiving of the beam. Further, the reflectors 431b to 434b are plate-shaped members made of an appropriate material that reflects a beam.

Here, the sensor holder 430a has a substantially L-shaped cross section in the horizontal direction, and one of the two sides constituting the L-shape extends in the thickness direction of the shutter curtain 12, and the other. The sides extend parallel to the surface of the shutter curtain 12. The light receiving and receiving unit 431a is fixed to the inner side surface (one side) of the surface extending in the thickness direction of the shutter curtain 12 of the sensor holder 430a, and the light receiving and receiving unit 432a is the thickness of the shutter curtain 12 of the sensor holder 430a. It is fixed to the outer surface (other side) of the surface extending in the direction.

Further, the sensor holder 430b is installed on the side opposite to the bearing bracket 135 with the sensor holder 430a interposed therebetween. Like the sensor holder 430a, the sensor holder 430b also has a substantially L-shaped cross section in the horizontal direction, and one of the two sides constituting the L-shape is in the thickness direction of the shutter curtain 12. It is stretched and the other side is stretched parallel to the surface of the shutter curtain 12. The light receiving and receiving unit 433a is fixed to the outer surface (one side) of the surface extending in the thickness direction of the shutter curtain 12 of the sensor holder 430a, and the light receiving and receiving unit 434a is the thickness of the shutter curtain 12 of the sensor holder 430a. It is fixed to the inner surface (other side) of the surface extending in the direction.

Further, reflectors 431b to 434b are installed on the sensor holder 430c. More specifically, in the sensor holder 430c, the reflector plate 431b faces the light emitting / receiving unit 431a, the reflector 432b faces the light emitting / receiving unit 432a, and the reflector 433b faces the light emitting / receiving unit 433a. At the position, the reflector 434b is installed at a position facing the light emitting / receiving unit 434a.

As a result, the optical path 431c connecting the light emitting / receiving unit 431a and the reflecting plate 431b, the optical path 432c connecting the light emitting / receiving unit 432a and the reflecting plate 432b, the optical path 433c connecting the light emitting / receiving unit 433a and the reflecting plate 433b, and the light emitting / receiving unit 434a and the reflecting plate In the optical path 434c connecting the 434b, a beam is irradiated from the light emitting / receiving units 431a to 434a toward the reflecting plates 431b to 434b, and the beam reflected by the reflecting plates 431b to 434b is emitted from the light receiving / receiving units 431a to 434a. Received light. Further, these optical paths 431c to 434c are arranged in the order of optical path 432c, optical path 431c, optical path 433c, and optical path 434c from the bearing bracket 135 side toward the center of the shutter curtain 12.

The first abnormality detection sensor 431 transmits a detection signal to the control panel 15 when the slats 121 move in the direction of the bearing bracket 135 and the optical path 431c between the light emitting / receiving unit 431a and the reflector 431b is blocked. The second abnormality detection sensor 432 transmits a detection signal to the control panel 15 when the slats 121 move toward the bearing bracket 135 and the optical path 432c between the light emitting / receiving unit 432a and the reflector 432b is blocked.

The first abnormality detection sensor 431 is for warning detection of a relatively small deviation in the lateral direction (width direction of the shutter curtain 12) from the normal position of the slat 121 (shutter curtain 12) toward the bearing bracket 135 side. There is (see FIG. 14). More specifically, the first abnormality detection sensor 431 transmits a detection signal to the control panel 15 to warn and detect a relatively small lateral deviation from the normal position of the slat 121 to the bearing bracket 135 side. In FIGS. 14 and 15, the virtual line 12a indicating the end portion of the shutter curtain 12 is shown by a two-dot chain line.

The second abnormality detection sensor 432 is for warning detection of a relatively large deviation in the lateral direction (width direction of the shutter curtain 12) from the normal position of the slat 121 (shutter curtain 12) toward the bearing bracket 135 side. There is (see FIG. 14). More specifically, the second abnormality detection sensor 432 transmits a detection signal to the control panel 15 to warn and detect a relatively large lateral deviation from the normal position of the slat 121 to the bearing bracket 135 side.

The third abnormality detection sensor 433 is arranged so that the optical path 433c is blocked by the slat 121 when the slat 121 is in the normal position, but the slat 121 is disengaged from between the light emitting and receiving unit 433a and the reflector 433b, and the optical path 433c. When there is nothing to block, the detection signal is transmitted to the control panel 15. The fourth abnormality detection sensor 434 is arranged so that the optical path 434c is blocked by the slat 121 when the slat 121 is in the normal position. When there is nothing to block, the detection signal is transmitted to the control panel 15.

The third abnormality detection sensor 433 is for warning detection of a relatively small deviation in the lateral direction (width direction of the shutter curtain 12) from the normal position of the slat 121 (shutter curtain 12) to the side opposite to the bearing bracket 135. (See FIG. 14). More specifically, the third abnormality detection sensor 433 sends a detection signal to the control panel 15 to warn of a relatively small lateral deviation from the normal position of the slat 121 to the side opposite to the bearing bracket 135 side. Detect.

The fourth abnormality detection sensor 434 warns and detects a relatively large deviation in the lateral direction (width direction of the shutter curtain 12) from the normal position of the slat 121 (shutter curtain 12) to the side opposite to the bearing bracket 135. (See FIG. 14). More specifically, the fourth abnormality detection sensor 434 sends a detection signal to the control panel 15 to warn of a relatively large lateral deviation from the normal position of the slat 121 to the side opposite to the bearing bracket 135 side. Detect.

That is, when the first abnormality detection sensor 431 transmits a detection signal to the control panel 15, a relatively large lateral bias from the normal position of the slat 121 toward the bearing bracket 135 side is detected.

When the first abnormality detection sensor 431 does not transmit the detection signal to the control panel 15 and the second abnormality detection sensor 432 transmits the detection signal to the control panel 15, the normal position of the slats 121 to the bearing bracket 135 side. A relatively small deviation in the lateral direction is detected.

When the first abnormality detection sensor 431, the second abnormality detection sensor 432, the third abnormality detection sensor 433, and the fourth abnormality detection sensor 434 do not transmit the detection signal to the control panel 15, the slats 121 may be in the normal position. Detected.

The first abnormality detection sensor 431 and the second abnormality detection sensor 432 do not transmit the detection signal to the control panel 15, the third abnormality detection sensor 433 transmits the detection signal to the control panel 15, and the fourth abnormality detection sensor 434 detects. When the signal is not transmitted to the control panel 15, a relatively small lateral deviation from the normal position of the slats 121 to the side opposite to the bearing bracket 135 is detected.

When the first abnormality detection sensor 431 and the second abnormality detection sensor 432 do not transmit the detection signal to the control panel 15, and the third abnormality detection sensor 433 and the fourth abnormality detection sensor 434 transmit the detection signal to the control panel 15. Detects a relatively large lateral deviation from the normal position of the slat 121 to the side opposite to the bearing bracket 135.

The sensor holder 430a and the sensor holder 430b are fixed to the holding hardware 410 by screws. As shown in FIG. 14, the sensor holder 430a has a horizontally elongated oval screw hole 441a and a screw hole 441a. A screw hole 441b is provided. By changing the screwing positions inside the screw holes 441a and the screw holes 441b with respect to the holding hardware 410 of the sensor holder 430a, the axial direction of the take-up drum 132 of the first abnormality detection sensor 431 and the second abnormality detection sensor 432 It is possible to adjust the position in (the width direction of the shutter curtain 12).

Similarly, the sensor holder 430b is provided with a horizontally elongated oval screw hole 442a and a screw hole 442b. By changing the screwing positions inside the screw holes 442a and the screw holes 442b with respect to the holding hardware 410 of the sensor holder 430b, the width direction of the take-up drum 132 of the third abnormality detection sensor 433 and the fourth abnormality detection sensor 434 It is possible to adjust the position in (the width direction of the shutter curtain 12).

Further, the shutter device 1 has a fifth abnormality detection sensor 435 as a configuration for preventing overwinding of the shutter curtain 12.

Specifically, as shown in FIG. 14, in the holding hardware 410, the sensor holder 430d is located on the opposite side of the bearing bracket 135 (center side of the shutter curtain 12) with the sensor holder 430a and the sensor holder 430b sandwiched between them. A light emitting / receiving unit 435a, which is a part of the fifth abnormality detection sensor 435, is installed at the lower end of the sensor holder 430d.

Further, as shown in FIG. 16, a reflector 435b and a reflector 435c, which are a part of the fifth abnormality detection sensor 435, are fixed to the lower part of the back side of the shutter curtain 12. The reflector 435b is fixed to the seat plate 122. The reflector 435b is adhesively fixed to the horizontally facing surface of the seat plate 122 (the found surface on the indoor side). The reflector 435c is a thin film sealing member having an adhesive surface.

The installation location of the reflector 435b is set based on the position where the shutter curtain 12 is overwound and the height of the light emitting / receiving unit 435a. For example, when the reflector 435b is located at the height of the light emitting / receiving unit 435a during the winding operation of the shutter curtain 12, the installation location is a position where it can be determined that overwinding has started or just before overwinding occurs.

The reflector 435c is located inside the recess 121b of the slats 121. In the present embodiment, the seat plate 122 has an extension piece 122a extending upward along the back surface of the slat 121, and is on a surface of the extension piece 122a facing the horizontal direction (the found surface on the indoor side). The reflector 435c is adhesively fixed. The reflector 435c is a plate-shaped member made of an appropriate material. As the reflector 435c, a reflector having a thickness that fits inside the recess 121b of the slat 121 even when it is fixed to the extension piece 122a is used.

The installation location of the reflector 435c is a position detected by the light emitting / receiving unit 435a at a stage prior to the position where the shutter curtain 12 is overwound during the winding operation. For example, when the reflector 435c is located at the height of the light emitting / receiving portion 435a during the winding operation of the shutter curtain 12, the installation location is a position where it can be determined that the overwinding occurs, and the reflector 435c is the reflector. It is located above 435b. Therefore, when overwinding occurs during the winding operation, the reflector 435c comes to the height of the light emitting / receiving unit 435a before the reflector 435b.

The reflector 435b is installed at a position where it can detect a state in which the probability of an overwound state is relatively high with respect to the reflector 435c. Further, when viewed from the whole, the reflector plate 435b and the reflector plate 435c are located at the lower end portion of the shutter curtain 12.

When the winding operation progresses and the position of the reflector 435c fixed to the shutter curtain 12 rises to the height of the light emitting / receiving unit 435a, the beam irradiated by the light emitting / receiving unit 435a is reflected by the reflecting plate 435c, and the light emitting / receiving unit 435a It will be in the state of returning to. Then, the detection signal (first detection signal) of the light emitting / receiving unit 435a is transmitted to the control panel 15.

When the winding operation further progresses and the position of the reflector 435b fixed to the shutter curtain 12 rises to the height of the light emitting and receiving unit 435a, the beam irradiated by the light emitting and receiving unit 435a is reflected by the reflecting plate 435b, and the light emitting and receiving unit It will be in a state of returning to 435a. As a result, the detection signal (second detection signal) of the light emitting / receiving unit 435a is transmitted to the control panel 15.

The second detection signal has a higher probability of overwinding than the first detection signal.

Although not shown, it is possible to detect the excessive descent of the shutter curtain 12 by installing one or more reflectors on the upper part of the back side of the shutter curtain 12.

The shutter device 1 of the fourth embodiment described above includes a third abnormality detection sensor 433 that detects a relatively small displacement of the slat 121 with respect to the other side in the width direction (opposite side of the bearing bracket 135) of the shutter curtain 12. Further, a fourth abnormality detection sensor 434 that detects a relatively large displacement of the slat 121 with respect to the other side in the width direction (opposite side of the bearing bracket 135) of the shutter curtain 12 is further provided, and the first abnormality detection sensors 431 to No. 4 The abnormality detection sensor 434 is arranged on one side in the axial direction (bearing bracket 135 side) of the take-up drum 132.

As a result, the same effect as that of the third embodiment described above can be obtained, and the configuration for detecting the displacement of the slats 121 in the left-right direction in stages can be integrated on one side (one side in the axial direction) of the take-up drum 132. Wiring can be simplified and maintenance work efficiency can be improved.

Further, in the shutter device 1 of the fourth embodiment, at least one of the first abnormality detection sensor 431 to the fourth abnormality detection sensor 434 is a sensor holder capable of adjusting the position of the take-up drum 132 in the axial direction. It is held at 430.

As a result, the position of the take-up drum 132 can be adjusted in the axial direction, and the assembling property and maintainability of the shutter device 1 can be further improved.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment and can be appropriately modified. For example, in the above embodiment, the stepwise detection is a two-step detection of a first detection unit within a permissible range without hindering operation and a second detection unit exceeding the permissible range. By providing a plurality of detection units between the second detection unit, the detection signal can be made finer and the degree of displacement can be confirmed more finely. That is, it is also possible to make the configuration of the above embodiment more multistage so that the displacement amount of the slats can be measured.

In the above embodiment, the control panel 15, the operation device 16, and the notification device 17 may be arranged in the vicinity of the guide rail 11, the winding device 13, etc., or may be concentrated in the same facility away from the shutter curtain 12. It may be a control room, a remote monitoring room geographically separated from the facility, or the like.

Further, in the above embodiment, the notification device 17 is configured to notify the state of the shutter device 1 by a plurality of indicator lights (power light 171, warning light 172, caution light 173, cord disconnection light 174). Not limited to. For example, a sounding device such as a buzzer or a speaker, a display device for displaying an image, or a combination thereof may be used to configure the notification device.

1 Shutter device 11 Guide rail 12 Shutter curtain 15 Control panel (control unit)
16 Operation device (operation unit)
121 Slat 132 Winding drum (winding part)
141 Motor (drive unit)

Claims (8)

A shutter curtain composed of multiple slats and
A winding unit that can wind the shutter curtain and
A drive unit that rotationally drives the take-up unit to wind up or unwind the shutter curtain, and a drive unit.
An operation unit capable of instructing winding or feeding of the drive unit, and
A control unit that controls the drive unit based on the instructions of the operation unit,
A first abnormality detection unit that detects a relatively small displacement of the slats to one side in the width direction of the shutter curtain, and
A second abnormality detection unit that detects a relatively large displacement of the slats to one side in the width direction of the shutter curtain, and
A shutter device equipped with. The first abnormality detection unit is a non-contact sensor arranged on the side closer to the slats than the second abnormality detection unit.
The shutter device according to claim 1, wherein the second abnormality detecting unit is a contact type sensor. Further provided with a guide rail for guiding the movement of the shutter curtain unwound from the winding unit.
The shutter device according to claim 1 or 2, wherein the first abnormality detecting unit and the second abnormality detecting unit are arranged between the winding unit and the guide rail. A third abnormality detecting unit which is arranged on one side in the axial direction of the winding unit together with the first abnormality detecting unit and the second abnormality detecting unit and detects the displacement of the slats to the other side in the width direction of the shutter curtain. The shutter device according to any one of claims 1 to 3, further comprising. The shutter device according to any one of claims 1 to 4, further comprising a notification device capable of stepwise distinguishing and notifying the degree of abnormality based on the detection results of the first abnormality detection unit and the second abnormality detection unit. The control unit determines the degree of abnormality based on the detection results of the first abnormality detection unit and the second abnormality detection unit.
If the degree of abnormality is high, the drive of the drive unit is stopped, and the drive is stopped.
The shutter device according to any one of claims 1 to 5, wherein when the degree of abnormality is low, a predetermined operation preset in the operation unit is performed to drive the drive unit. A third abnormality detection unit that detects a relatively small displacement of the slats to the other side in the width direction of the shutter curtain, and
Further, a fourth abnormality detecting unit for detecting a relatively large displacement of the slats to the other side in the width direction of the shutter curtain is provided.
The shutter device according to claim 1, wherein the first abnormality detecting unit to the fourth abnormality detecting unit are arranged on one side in the axial direction of the winding unit. The shutter device according to claim 7, wherein at least one of the first abnormality detecting unit to the fourth abnormality detecting unit is held by a sensor holder whose position in the axial direction of the winding unit can be adjusted.

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