JP5388507B2 - Shutter device and raising / lowering method of shutter curtain - Google Patents

Description

  The present invention relates to a shutter device that opens and closes an opening, such as a doorway of a building, a window, and a boundary between rooms in the building, and a method for raising and lowering a shutter curtain.

  2. Description of the Related Art As a shutter device used to open and close an opening of a building, a shutter curtain is formed by connecting a plurality of panels with a chain in the vertical direction, and the shutter curtain is used to open and close the opening. . The shutter curtain is guided by rails provided on the left and right sides of the opening. A sprocket that is rotationally driven by a motor is provided above the opening. By rotating the sprocket that meshes with the chain, the shutter curtain is lifted from the opening or suspended from the opening. When the shutter curtain is lifted, the shutter curtain is accommodated in the storage space above the rail.

  When the shutter curtain is moved from the opening to the storage space or from the storage space to the opening, it is necessary to prevent the shutter curtain panels from interfering with each other. For this reason, there is a gap between the panels. That is, the plurality of panels are connected by a chain in the vertical direction at a mounting pitch longer than the height of each panel. In a shutter device having a gap between panels, when the shutter curtain is lowered, the shutter curtain is lowered with a gap between the panels. When the lowermost panel reaches the lower end of the opening, the shutter curtain continues to descend, and the remaining panels are sequentially stacked on the lower panel so as to close the gap.

However, when the shutter curtain is lowered as described above, there is a risk that a finger may be caught in the gap between the panels. Since even one panel is quite heavy, this situation must be avoided. In Patent Document 1, when a photoelectric switch that forms a detection optical path is arranged so as to cross a gap between panels and the detection optical path is blocked by an obstacle such as a finger, an obstacle is sandwiched in the gap. A shutter device that determines and stops driving of the switch is disclosed.
Japanese Patent Laid-Open No. 10-148077

  However, the shutter device described in Patent Document 1 requires a large number of photoelectric switches corresponding to the number of gaps between panels. In addition, it is difficult to cover the entire range of the clearance in the detection optical path of the photoelectric switch, and even if there is a finger in the clearance, it may not be detected as an obstacle. The photoelectric switch may malfunction due to the influence of the obstacle.

  Accordingly, an object of the present invention is to provide a shutter device that can reliably prevent a finger or the like from being caught in a gap between panels of a shutter curtain without providing a large number of photoelectric switches.

In order to solve the above-described problem, the invention according to claim 1 includes a shutter curtain in which a plurality of panels are connected by a chain in the vertical direction at a mounting pitch longer than the height of each panel;
A switch that moves the shutter curtain up and down with a gap in the vertical direction between the panels, a controller that controls the switch, and the lowermost panel of the shutter curtain moves to the lower end of the opening A detector that detects the state of the shutter curtain, and a push button that can be operated by an operator, and when the control unit lowers the shutter curtain in the raised state, the lowermost panel of the shutter curtain opens the opening. moving to the lower end parts, on the basis of a signal from the detector, the descent of the shutter curtain is stopped in a state where a gap in the vertical direction between the panel, then push the push button operator manually If, to resume the lowering of the shutter curtain to pack the gap between the panel and the operator continues pressing the push button That while only a shutter device to continue the descent of the shutter curtain by the opener.

According to a second aspect of the invention, the shutter device according to claim 1, wherein the control unit, the lowering speed of the shutter curtain when resuming the descent of the shutter curtain, to stop lowering of the shutter curtain It is characterized by being slower than before.

According to a third aspect of the present invention, a shutter curtain in which a plurality of panels are connected by a chain in the vertical direction at a mounting pitch longer than the height of each panel is moved up and down with a gap in the vertical direction between the panels. a shutter curtain of the lifting method for, when said lowering the shutter curtain, the when the shutter curtain lowermost panel is moved to the lower end of the opening, the state in which a gap in the vertical direction between the front Symbol panel When the operator stops pressing the shutter curtain and then manually pushes the push button , the shutter curtain descends again to close the gap between the panels , and the operator continues to push the push button. Only the method of raising and lowering the shutter curtain that continues to descend .

  According to a seventh aspect of the present invention, in the method for raising and lowering the shutter curtain according to the sixth aspect, when the lowermost panel of the shutter curtain moves to the lower end of the opening, the lowering of the shutter curtain is stopped. The descent of the shutter curtain is resumed so as to close the gap between the panels.

  When the lowermost panel moves to the lower end of the opening, since the descent of the shutter curtain stops with a gap between the shutter curtain panels, it is possible to prevent a finger or the like from being caught in the gap between the panels. In addition, after stopping the descent of the shutter curtain, restarting the descent of the shutter curtain so as to close the gap between the panels can improve the appearance when the shutter curtain is closed, and garbage from the gap between the panels Etc. can be prevented from being introduced into the interior.

Embodiments of the shutter device of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is an overall view of a shutter device according to an embodiment of the present invention. The shutter device is used to open and close openings such as entrances and exits of buildings, windows, and boundaries between rooms in the building. The shutter device includes a pair of left and right rails 1 extending in parallel to each other and a plurality of panels 2 disposed between the pair of left and right rails 1. The plurality of panels 2 arranged in multiple stages in the vertical direction are assembled to the rail 1 so as to be slidable in the vertical direction. Each panel 2 is composed of a rectangular panel body 6 and receptacles 7 provided at both ends of the panel body 6 in the left-right direction. Slits 1a1 that are elongated in the vertical direction are formed on the opposing surfaces of the pair of left and right rails 1 that extend in the vertical direction. The receptacle 7 protrudes from the rail 1 through the slit 1a1. A panel main body 6 is detachably attached to the receptacle 7 protruding from the rail 1. The outer shape of the panel body 6 is formed in a rectangular shape elongated in the left-right direction. The material of the panel body 6 is glass, ceramics, ceramics, metal, wood, resin, or the like. In order to improve the design, the surface of the panel body 6 may be decorated, or the panel body 6 may be an iron frame with decoration.

  The rail 1 is divided into a vertical portion 1a extending in the vertical direction and a storage portion 1b provided above the vertical portion 1a. The storage part 1b of the rail 1 is bent in a substantially horizontal direction on the back side with respect to the vertical part 1a. The storage part 1b of the rail 1 includes an upper rail 1b1 disposed on the upper side and a lower rail 1b2 disposed on the lower side. The upper rail 1b1 extends linearly upward from the upper end of the vertical portion 1a, then bends about 90 degrees around the sprocket 4, and then extends linearly slightly downward from the horizontal direction. The lower rail 1b2 is bent into an arc shape at the upper end of the vertical portion 1a.

  As shown in FIG. 2, an opening 9 is formed between the pair of left and right rails 1. The opening 9 is opened and closed by a shutter curtain 8 composed of a plurality of panels 2. As shown in FIG. 3, a connecting shaft 25 is attached to the receiver 7. The connecting shaft 25 is connected to a chain 3 for connecting a plurality of panels 2 in series in the vertical direction. The mounting pitch P of the panel 2 to the chain 3 (the pitch between the connecting shafts 25) is larger than the height of the panel 2 in the vertical direction. For this reason, the clearance gap g of about 10 mm-30 mm is vacant between the panels 2, for example. By providing a gap g between the panels 2, even if the panel 2 moving from the vertical portion 1a to the storage portion 1b rotates, interference between the panels 2 can be avoided.

  As shown in FIG. 1, the chain 3 meshes with a sprocket 4 of an opening / closing machine. The sprocket 4 is disposed above the vertical portion 1 a of the rail 1. The rotation of the motor 5 is transmitted to the sprocket 4 via the intermediate sprocket 46. The sprocket 4 and the intermediate sprocket 46 are provided on both sides of the panel 2 in the width direction. The intermediate sprocket 46 is connected by a coupling shaft (not shown). A first belt 47 is put between the motor 5 and the intermediate sprocket 46, and the rotation of the motor 5 is decelerated and transmitted to the intermediate sprocket 46. A second belt 48 is hung between the intermediate sprocket 46 and the sprocket 4, and the rotation of the intermediate sprocket 46 is further decelerated and transmitted to the sprocket 4. The sprocket 4 is driven to rotate forward and backward by a motor 5. When the motor 5 rotates the sprocket 4 in one direction, the shutter curtain 8 is pulled up and stored in the storage portion 1 b of the rail 1. On the other hand, when the motor 5 rotates the sprocket 4 in the opposite direction, the shutter curtain 8 housed in the housing portion 1b is unwound from the housing portion 1b, and the shutter curtain 8 is lowered while being guided by the rail 1, and the opening 9 is opened. Closed state.

  As shown in FIG. 1, the lowermost panel 2a is provided with a seat plate switch 11 as a detector. A lower part of the lowermost panel 2a is provided with a seat plate main body 12a and a contact plate 12b movable in the vertical direction with respect to the seat plate main body 12a. When the lowermost panel 2a moves to the lower end of the opening 9, the contact plate 12b rises against the seat plate body 12a. The seat plate switch 11 detects the rise of the contact plate 12b with respect to the seat plate main body 12a and transmits an infrared signal. The light receiver 13 provided in the lower part of the lintel converts a digital infrared signal from the seat plate switch 11 into an electric signal and sends a detection signal to a control unit described later.

  As shown in FIG. 4, the receiver 7 includes an attachment portion 14 that protrudes from the slit 1 a 1 of the rail 1 and a main body portion 10 that is accommodated in the rail. The attachment portion 14 and the main body portion 10 are coupled by a bolt 15. As shown in FIG. 3, the vertical height of the main body 10 of the receiving member 7 is substantially equal to the height of the panel main body 6. A roller support plate 21 is attached to the upper portion of the main body 10. The first roller 18 is rotatably attached to one side surface of the roller support plate 21. A support roller 19 is rotatably attached to the other side surface of the roller support plate 21. A second roller 20 is rotatably attached to the lower portion of the main body 10 via a connecting shaft 25.

  As shown in FIG. 4, the first roller 18 has ridges at both ends in the axial direction, and the overall shape is formed in an H shape. The first roller 18 travels on the protruding track 23 of the rail 1. The support roller 19 whose outer peripheral surface is formed in a cylindrical shape runs on the inner wall surface 24 of the rail 1 facing the protruding track 23. The second roller 20 is rotatably supported by a connecting shaft 25 protruding from the main body 10 of the receiving member 7. The second roller 20 whose outer peripheral surface is formed in a cylindrical shape is sandwiched between a pair of opposed surfaces 26 extending in the vertical direction. When the panel 2 slides along the vertical portion 1 a of the rail 1, the first roller 18 runs on the protruding track 23 of the rail 1 and the support roller 19 protrudes above the height direction of the panel 2. The vehicle travels on the inner wall surface 24 of the rail 1 facing the track 23. Then, on the lower side in the height direction of the panel 2, the second roller 20 travels on a track between the pair of opposed surfaces 26 of the rail 1. The vertical posture of the panel 2 in the vertical portion 1 a of the rail 1 is maintained by the upper support roller 19 and the lower second roller 20 in the height direction of the panel 2.

  FIG. 5 shows the storage portion 1 b of the rail 1. An upper rail 1b1 and a lower rail 1b2 of the storage portion 1b are attached to the bracket 40 provided above the vertical portion 1a of the rail 1. The upper rail 1b1 is continuous with the track (see FIG. 4) between the opposing surfaces 26 of the vertical portion 1a of the rail. The upper rail 1b1 extends linearly upward from the upper end of the vertical portion 1a toward the sprocket 4, then bends about 90 degrees around the sprocket 4, and then linearly extends slightly downward from the horizontal direction. The second roller 20 of the panel 2 travels on the upper rail 1b1. While traveling on the upper rail 1b1, the second roller 20 is sandwiched between the pair of opposed surfaces 38 of the upper rail 1b1 in the vertical direction.

  The lower rail 1b2 continues to the protruding track 23 (see FIG. 4) of the vertical portion 1a of the rail 1. The lower rail 1b2 is bent in a circular arc shape at the upper end of the vertical portion 1a, and then extends linearly downward from the horizontal direction. The inclination angle is gentle at the tip of the lower rail 1b2. The plate-like lower rail 1 b 2 is attached to the bracket 40 via a support bar 39. The lower rail 1b2 is formed with a slit 37 extending elongated along the lower rail 1b2. The first roller 18 of the panel 2 travels through the slit 37. As shown in FIG. 4, the first roller 18 is formed with a ridge that sandwiches the lower rail 1b2, so that the first roller 18 does not escape from the lower rail 1b2.

  6 to 9 show operation diagrams of the panel 2 of the shutter curtain 8 moving on the rail 1. As shown in FIG. 6, in the vertical portion 1 a of the rail 1, the plurality of panels 2 are arranged in the vertical plane. The first roller 18 is disposed above the vertical portion 1 a of the rail 1, and the second roller 20 is disposed below the vertical portion 1 a of the rail 1.

  As shown in FIG. 7, when the sprocket 4 is rotated and the shutter curtain 8 is raised, the panel 2 is lifted from the vertical portion 1a of the rail 1 and moved to the storage portion 1b. At this time, the first roller 18 moves from the vertical portion 1a to the lower rail 1b2 of the storage portion 1b, and the upper portion of the panel 2 is inclined to the back side (right side in the drawing) of the shutter device. When the sprocket 4 further pulls up the panel 2, the inclination angle of the panel 2 gradually increases, and the second roller 20 moves to the upper rail 1b1 of the storage portion 1b. As the panel 2 moves to the back of the storage portion 1b, the vertical positions of the first roller 18 and the second roller 20 are reversed, and the second roller 20 is disposed above the first roller 18. Become so. The inverted posture of the panel 2 is maintained by the second roller 20 that travels on the upper rail 1b1 of the storage portion 1b and the first roller 18 that travels on the lower rail 1b2 of the storage portion 1b.

  As shown in FIG. 8, since the upper rail 1b1 and the lower rail 1b2 are inclined downward toward the back of the storage portion 1b, after the sprocket 4 lifts the panel 2 to the uppermost position, the panel 2 It moves to the back of the storage unit 1b by its own weight. When the panel 2 moves toward the back of the storage portion 1b, the rotation angle of the panel 2 is further increased. As shown in FIG. 9, in the back of the storage portion 1b, the adjacent panels 2 approach each other and become parallel. At this time, the chain 3 connecting the panels 2 is bent in a U shape. The parallel posture of the panel 2 is maintained by the second roller 20 that travels on the upper rail 1b1 of the storage portion 1b and the first roller 18 that travels on the lower rail 1b2 of the storage portion 1b. In a state where the sprocket 4 has finished pulling up all the panels 2, the lowermost panel 2 a is positioned at the upper end of the vertical portion 1 a of the rail 1. In FIG. 9, the vertical height of the lowermost panel 2 a is shown smaller than the vertical height of the remaining panels 2, but they may be equal as shown in FIG. 1.

  When lowering the shutter curtain in the raised state, the sprocket 4 is rotated in the opposite direction, and the plurality of panels 2 accommodated in the accommodating portion 1 b of the rail 1 are sequentially moved to the vertical portion 1 a of the rail 1.

  FIG. 10 is a configuration diagram of a control system of the shutter device. The shutter device is controlled by a portable wireless transmitter 41 that is a switch operated by an operator. The portable wireless transmitter 41 is stored in a vehicle, for example, and transmits a digital signal using radio waves or infrared rays as transmission waves. A plurality of portable wireless transmitters 41 are provided as required by the user. In combination with the portable wireless transmitter 41, an indoor wireless transmitter attached to an indoor wall or the like, or an outdoor wireless transmitter attached to an outer wall may be used. The portable wireless transmitter 41 has push buttons 41a for instructing respective operations of “up”, “down”, and “stop”. A digital signal transmitted from the portable wireless transmitter 41 is transmitted to the control unit via the antenna 42. The opening / closing device 44 that raises and lowers the shutter curtain 8 is controlled by the control unit 43. A control signal from the control unit 43 is transmitted to a driver 45 that drives the switch 44.

  FIG. 11 shows a block diagram of the control unit 43. In the figure, reference numeral 43a is a central processing unit (CPU), 43b is a ROM storing a program, 43c is a RAM, 43d is an input unit, and 43e is an output unit. The input unit 43d has a demodulator that demodulates the radio signal received from the antenna. The demodulated digital signal is stored in the RAM 43c. The input unit 43f receives an output signal from the seat plate switch 11. The digital signal output from the seat plate switch 11 is stored in the RAM 43c. The input unit 43g receives signals from the upper limit switch and the lower limit switch of the switch 44. The upper limit switch and the lower limit switch of the opening / closing machine 44 detect the rotation speed of the opening / closing machine 44, and when the rotation speed of the opening / closing machine 44 reaches a predetermined rotation speed, the upper limit position signal and the lower limit position signal of the shutter curtain 8 are detected. Is output. The output unit 43 e is an interface that transmits a control signal created by the control unit 43 to the driver 45.

  FIG. 12 shows a flowchart of a program executed by the control unit 43. In a standby state in which the control unit 43 is operating, S1 and S2 are looped, and the shutter curtain 8 is in a stopped state. When the control unit 43 receives a rising signal from the portable wireless transmitter 41, the control unit 43 proceeds from S1 to S3 and performs a rising operation. When the rising signal is received (S1, YES), the control unit 43 stores that the rising signal is present, and performs the rising operation continuously even if the rising signal from the portable wireless transmitter 41 is interrupted (S3). Therefore, if the operator temporarily presses the lift push button 41a, the lift operation is continued even if the operator lifts the hand from the lift push button 41a. When the control unit 43 receives a signal from the upper limit switch of the switch 44 (S5, YES), the process proceeds to S6, performs a stop operation, and returns to the standby loop. If a stop signal is received during the ascending operation (S4, YES), the process proceeds to S7, where the stop operation is performed, and the process returns to the standby loop.

  When the control unit 43 receives a descending signal from the portable wireless transmitter 41 in the standby loop (S2, YES), the process proceeds from S2 to S8 to perform the descending operation. When the descending signal is received, the control unit 43 stores that the descending signal has been received, and continues the descending operation even if the descending signal from the portable wireless transmitter 41 is interrupted. Therefore, if the operator temporarily presses the descending push button 41a, the descending operation is continued even if the operator releases the descending push button 41a.

  As shown in FIG. 13, when the shutter curtain 8 is lowered, a gap g is provided between the panels 2 of the shutter curtain 8. This is because the plurality of panels 2 are connected to the chain 3 at a mounting pitch longer than the height of the panel 2 in the vertical direction. The chain 3 suspended from the sprocket 4 is extended by the weight of the panel 2.

  When the lowermost panel 2a of the shutter curtain 8 moves to the lower end (floor surface) of the opening 9, the seat plate switch 11 outputs a signal. When the control unit 43 receives a signal from the seat plate switch (S10, YES), as shown in FIG. 12, the control unit 43 proceeds to step S11 and stops the lowering of the shutter curtain 8.

  As shown in FIG. 14, when the lowermost panel 2 a of the shutter curtain 8 moves to the lower end of the opening 9, a gap g is left between the panels 2. By stopping the descent of the shutter curtain 8 with a gap g between the panels 2, it is possible to prevent a finger or the like from being caught in the gap between the panels 2.

  As shown in FIG. 12, the control unit 43 temporarily stops the lowering of the panel 2, and then performs a push-down lowering operation in step S12. The lowering of the shutter curtain 8 is resumed by the lowering operation of the press cut. The downward movement of the push-off means that the shutter curtain 8 continues to be lowered only while the operator continues to push down the push button 41a of the portable wireless transmitter 41. When the operator releases the lowering push button 41a, the lowering operation of the shutter curtain 8 is stopped. In the push-down lowering operation, the control unit 43 outputs a command for a lowering speed that is lower than the lowering speed before the shutter curtain 8 is lowered, for example, a lowering speed of 1/3 to the driver 45. The driver 45 reduces the descending speed by the switch 44 to, for example, 1/3 by inverter control or the like. If the shutter curtain 8 is lowered to the position of the lower limit switch of the switch 44 even if the lower push button 41a is kept pressed, the signal from the lower limit switch is lowered in preference to the signal from the lower push button 41a. However, the flow at that time is omitted.

  As shown in FIG. 15, the clearance between the panels 2 of the shutter curtain 8 is reduced by restarting the lowering of the shutter curtain 8. First, the gap between the lowermost panel 2a and the second panel 2 from the bottom is filled, and then the gap between the second panel 2 from the bottom and the third panel 2 from the bottom Is packed. After that, it is packed in order from the lower gap.

  As shown in FIG. 16, when the clearance between the panels 2 is reduced, the receiving members 7 of the upper and lower panels 2 come into contact with each other. On the other hand, a small gap g1 of, for example, about several mm is provided between the panel bodies 6 in order to prevent the foreheads of the panel bodies 6 from coming into contact with each other. When the clearance between the panels 2 is closed, the chain 3 bends slightly.

  After stopping the descent of the shutter curtain 8 and restarting the descent of the shutter curtain 8 so as to close the gap between the panels 2, the appearance when the shutter curtain 8 is closed can be improved and the space between the panels 2 can be improved. It is possible to prevent dust from entering the gap. The pressing operation for closing the gap between the panels 2 is performed only while the operator is pressing the push button 41a of the portable wireless transmitter 41. While the operator near the shutter device confirms that no fingers or the like are caught between the gaps, the gap g between the panels 2 can be reduced by the operator's intention, so that the fingers or the like are caught in the gap g. Can be reliably prevented.

  In addition, this invention is not restricted to the said embodiment, In the range which does not change the summary of this invention, it can change variously. For example, the detector that stops the lowermost panel of the shutter curtain at the lower end of the opening is a seat plate switch, but may be a limit switch that detects the number of rotations of the switch as long as it is a position signal. . In addition, the operation to resume the descent after stopping the lower end of the shutter curtain is not limited to the push-off operation, and once the operator presses the push button of the switch, the clearance between the panels is automatically closed and The descending operation may be stopped. Furthermore, in the above-described embodiment, the operation command from the operator is performed using the wireless transmitter, but a switch connected by wire may be used.

1 is an overall view of a shutter device according to an embodiment of the present invention ((A) shows a front view and (B) shows a cross-sectional view). Front view of the opening The figure which shows the panel attached to a chain ((A) shows a front view in the figure, (B) shows a side view) Horizontal cross-sectional view showing receptacles housed in rails Assembly drawing of rail storage part ((A) in the figure shows a front view, (B) shows a cross-sectional view along line BB in (A)) Panel operation (1/4) Panel operation (2/4) Panel operation (3/4) Panel operation (4/4) Configuration diagram of shutter system control system Block diagram of control unit Flow chart of program executed by control unit Front view of shutter curtain in the middle of closing the opening Front view of shutter curtain when opening is closed Front view of the shutter curtain when the opening is completely closed Detailed view of the panel of the shutter curtain when the opening is completely closed ((A) shows a front view and (B) shows a side view)

Explanation of symbols

2 ... Panel 2a ... Bottom panel 3 ... Chain 4 ... Sprocket
5. Motor (opening / closing machine)
6 ... Panel body 7 ... Receiver 8 ... Shutter curtain 9 ... Opening 11 ... Seat plate switch (detector)
41 ... Portable wireless transmitter (switch)
41a ... push button 43 ... control unit 44 ... opening / closing machine g ... clearance

Claims (3)

A shutter curtain in which a plurality of panels are connected by a chain in the vertical direction at a mounting pitch longer than the height of each panel;
An opening and closing device that raises and lowers the shutter curtain with a gap in the vertical direction between the panels;
A control unit for controlling the switch;
A detector that detects a state in which the lowermost panel of the shutter curtain has moved to the lower end of the opening;
A push button operable by an operator,
When the lowermost panel of the shutter curtain moves to the lower end of the opening when lowering the shutter curtain in the raised state, the control unit moves between the panels based on a signal from the detector. vertically stops the descent of the shutter curtain in a state in which a gap, then the operator presses the push button manually, to resume the lowering of the shutter curtain to pack the gap between the panels, the operator A shutter device that continues to lower the shutter curtain by the opening / closing device only while the push button is continuously pressed .   2. The shutter device according to claim 1, wherein the control unit makes a lowering speed of the shutter curtain when restarting the lowering of the shutter curtain slower than before stopping the lowering of the shutter curtain. A method of raising and lowering a shutter curtain in which a plurality of panels are moved up and down by a chain with a mounting pitch longer than the height of each panel, with a gap in the vertical direction between the panels. ,
Wherein when lowering the shutter curtain, the bottom of the panel of the shutter curtain is moved to the lower end of the opening to stop the descent of the shutter curtain in a state where a gap in the vertical direction between the front Symbol panel, then When the operator manually pushes the push button , the shutter curtain descends again to close the gap between the panels, and the shutter curtain continues to descend only while the operator continues to push the push button. Lifting method.

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