JP5079337B2 - Sheet shutter - Google Patents

Description

  The present invention relates to a sheet shutter that is applied to opening / closing or partitioning of an opening of a construction or structure such as a building.

  A conventional seat shutter has a curtain guide groove, a pair of left and right side rails having portions that can be elastically deformed in the direction of expanding the groove width of the curtain guide groove, and the curtain guide groove between these side rails. A sheet-like curtain that opens and closes along the curtain, a group of engaging elements that are provided in series on both side edges of the curtain and that slidably engage with the inner surface of the side rail, and the curtain It is the structure provided with the drive means which raises / lowers. In such a conventional seat shutter, the curtain in a state in which the side rails are closed generates a strong external force, for example, an excessive external force from any three-dimensional direction due to a collision of a work vehicle, a strong wind pressure, an obstacle, or the like. When it receives and bends more than a predetermined amount, the engagement group following the curtain comes off, and when the removed curtain is wound up, the engagement group automatically returns to the side rail (for example, , See Patent Document 1).

Japanese Examined Patent Publication No. 6-86788 (page 2, FIGS. 4 and 8)

  Since the conventional sheet shutter is configured as described above, the actual situation is that it is difficult to escape when an emergency such as a power failure occurs with the curtain fully closed. That is, in the fully closed state of the curtain, a series of engagement elements on both sides of the curtain are uniformly engaged with the inner wall surface of the side rail. The engaging group could not be easily removed from the side rail. Therefore, as an escape method in an emergency, it is possible to escape if the curtain lifting and lowering drive system switch is turned with a manual handle and the curtain is raised, but the switch is located at a high place, so a tripod, etc. Without the scaffold, the switch cannot be turned manually, and the manual operation takes time, so that it is difficult to escape in a short time. In addition, it is possible to escape in a short time if the fully closed curtain is cut with a cutter or the like, but in this case, a cutting tool such as a cutter is necessary and the cut curtain cannot be reused. was there.

  The present invention has been made to solve the above-described problems. When an emergency occurs due to a power failure or the like when the curtain is fully closed, the curtain itself is not artificially required without using a tripod or other scaffolding or a cutting tool. To provide a sheet shutter that can be partially opened by operation and escaped in a short time, and can automatically correct the operation origin position of the curtain only by raising the curtain after the emergency is released With the goal.

A seat shutter according to the present invention includes a pair of left and right side rails, a sheet-like curtain that moves up and down between the side rails, and a driving unit that drives the curtain up and down. An opening / closing part for emergency escape, which is normally held in a closed state, and an opening operation member for opening the opening / closing part for emergency escape having a projection for correcting the operation origin position of the curtain; And an upper limit stopper disposed at the upper limit position of opening of the curtain to abut the projection of the opening operation member when correcting the operation origin position of the curtain. The emergency escape opening / closing part is composed of a vertical fastener provided on the curtain, and a slider for opening / closing the fastener serves as an opening operation member that also serves as a projection for correcting the operation origin position of the curtain. The fastener is opened by pulling up the slider, and the slider at the lifted position comes into contact with the upper limit stopper by the raising operation of the curtain and is relatively lowered by continuing the raising operation of the curtain to return the fastener to the closed position. The operation origin position of the curtain is corrected at the return position.

  According to the present invention, when an emergency occurs due to a power failure or the like in the fully closed state of the sheet curtain that moves up and down between the left and right side rails, the opening and closing part that is normally provided in the closed state is provided on the curtain. Since it can be opened artificially by the opening operation member, human beings trapped by a fully closed curtain that cannot be operated due to a power failure etc., specially perform work at a high place by using a tripod or other scaffolding or cutting work by a cutting tool etc. Without performing this, there is an effect that the curtain itself can be partially opened to quickly escape. In addition to this, it is possible to automatically correct the operation origin position of the curtain by causing the projection of the opening operation member to abut on the upper limit stopper only by raising the curtain after the emergency is released. is there.

Embodiment 1 FIG.
1 is a partially cutaway perspective view showing a seat shutter according to Embodiment 1 of the present invention, FIG. 2 is an enlarged sectional view showing a side rail mounting portion in FIG. 1, and FIG. 3 is a side rail in FIGS. FIG. 4 is an enlarged front view partially showing a side edge portion of the curtain in FIG. 1.
The seat shutter shown in FIG. 1 includes a pair of left and right side rails (only one side rail is shown in FIG. 1) 1 disposed on both sides of a shutter opening / closing space of the structure, and the upper ends of these side rails 1. A curtain storage box 2 disposed across the curtain storage box 2, a curtain winding drum (hereinafter simply referred to as a winding drum) 3 disposed in the curtain storage box 2, and the winding drum 3 wound around the winding drum 3. The drum 3 is configured to include a sheet-like curtain 4 that moves up and down between the side rails 1 when the drum 3 is rotationally driven, and an opening / closing device (motor) 5 that rotationally drives the winding drum 3.

  More specifically, the left and right side rails 1 are horizontally necked through a rail holder 7 on a rail body 6 (see FIG. 2) having a U-shaped cross section standing on both sides of the shutter opening / closing space. It is attached so that it can swing. Reference numeral 8 in FIG. 2 is a buffering spring that urges the side rails 1 in the curtain tension direction via the rail holder 7, and reference numeral 9 in FIG. 1 is a rail that covers the rail body 6. It is a cover.

  The left and right side rails 1 attached in this way are formed of a hollow member having a vertically long curtain guide groove 10 on both opposing surface portions. In the side rail 1, an access passage 11 (see FIG. 3) located in the vicinity of the curtain entrance / exit of the curtain storage box 2 is notched. The side rails 1 are divided into an upper rail portion 12 and a lower rail portion 13 by the access passage 11. The upper rail portion 12 is formed of a rigid member that cannot be elastically deformed, and the lower rail portion 13 is a semi-elastic member that can be elastically deformed in a direction in which the width of the curtain guide groove 10 of the lower rail portion 13 is expanded. It is formed with.

  On the other hand, on both side edges of the curtain 4, there are a group of engaging elements 14 for preventing the curtain from being removed, which are in the form of a tooth arrangement that slidably engages with the inner surfaces of the side rails 1 (see FIG. 4). Is provided. Here, when the curtain 4 between the side rails 1 is greatly bent due to excessive external force from all directions in three dimensions due to collision of a work vehicle, strong wind pressure, obstacles, etc. The group of engaging members 14 following the curtain 4 presses and elastically deforms the lower rail portion 13 of the semi-elastic member from the inside to come out from the curtain guide groove 10. A weight (for example, a ballast) 15 is provided at the lower end of the curtain 4 to cause the curtain 4 to drop by gravity when the curtain is rewound by the winding drum 3. Reference numeral 16 denotes a cover sheet that is detachably attached to the lower end of the curtain 4.

  In the sheet shutter configured as described above, the curtain 4 includes the emergency escape opening / closing part 17 shown in FIGS. 1 and 4 and the opening / closing part 17 closed during a normal shutter opening / closing operation. An opening operation member 18 for opening the opening / closing part 17 at the time of emergency escape in the closed state is provided. The opening operation member 18 has a projection 18 a for correcting the operation origin position of the curtain 4. On the other hand, an upper limit stopper 19 for bringing the projection 18a of the opening operation member 18 into contact with the raising operation of the curtain 4 is disposed at the upper opening limit position of the curtain 4 near the curtain entrance / exit of the curtain storage box 2. Yes.

  More specifically, in the first embodiment, the opening / closing part 17 is composed of a fastener in the vertical direction (vertical direction) partially provided in the vicinity of the lower region of the curtain 4, and opens and closes the fastener 17. The slider 18a that is in contact with the upper limit stopper 19 during the raising operation of the curtain 4 also serves as the protrusion for correcting the operation origin position of the curtain 4 (resetting the upper limit position of opening of the curtain 4). The opening operation member 18 includes an operation lever attached to the slider 18a. Here, the slider 18a has a protruding portion for attaching the base portion of the operating lever 18 so as to be rotatable in the vertical direction, and this protruding portion is a protruding portion for correcting the operation origin position of the curtain 4. Is. The lower end of the fastener 17 is in a fully closed position by the slider 18a.

  Accordingly, by pulling up the slider 18a from the lower end portion of the fastener 17, the fastener 17 is opened, and the slider 18a at the lifted position comes into contact with the upper limit stopper 19 by the raising operation of the curtain 4, and the curtain after the contact is made. 4 is relatively lowered by continuing the ascending operation 4 and returns to the fully closed position of the fastener 17. The raising operation of the curtain 4 automatically stops at the fully-closed return position of the fastener 17, and the operation origin position of the curtain 4 (the upper limit setting position during the raising operation of the curtain 4) based on the stop position. Is automatically corrected.

  More specifically, the sheet shutter configured as described above includes shutter control means (not shown) having an operation origin position correction function for correcting the operation origin position of the curtain 4. In this shutter control means, an opening upper limit position for automatically stopping the curtain 4 at a predetermined fully opened position is set in advance, and this opening upper limit position is corrected every predetermined opening and closing times of the curtain 4. It is like that. The correction is to reset the upper limit position of the curtain 4 based on the position where the slider 18a comes into contact with the upper limit stopper 19 and stops at the fully closed position of the fastener 17 during the raising operation of the curtain 4. Here, the stop position of the slider 18a during the raising operation of the curtain 4 is detected by the torque of the switch (motor) 5 when the slider 18a comes into contact with the upper limit stopper 19 and stops at the fully closed position of the fastener 17. The opening upper limit position of the curtain 4 can be automatically reset (corrected) based on the torque detection signal.

Next, the operation will be described.
The curtain 4 between the left and right side rails 1 performs a normal raising / lowering operation with the fastener 17 closed. The curtain 4 receives an excessive external force (a strong wind pressure, a collision force of the work vehicle, a curtain pushing force due to an obstacle when the curtain 4 is lowered, etc.) when the curtain 4 is moved up and down, or in a fully closed position and a half open position. Thus, if an excessive traction force in the direction of pulling out a part of the engagement elements 14 from the curtain guide groove 10 of the side rail 1 acts on the series of engagement elements 14 on the side edge of the curtain 4 in a locally concentrated manner, the excessive increase By the traction force, the group of the engaging elements 14 pushes out the curtain guide groove 10 of the lower rail portion 13 that is elastically deformable in the side rail 1 from the inner side and comes out. In this way, the curtain 4 is detached from the side rail 1 so that the side rail 1 and the curtain 4 can be prevented from being damaged by the excessive traction force.

  Then, the curtain 4 detached from the side rail 1 is wound up by the winding drum 3 by starting the opening / closing machine 5 in the curtain winding direction, and the engaging members 14 detached from the side rail 1 in the winding process are accessed. It is drawn into the upper rail portion 12 from the passage 11. Thereby, the curtain 4 detached from the side rail 1 automatically returns to the side rail 1.

  Next, an escape method when an emergency such as a power failure occurs when the curtain 4 is fully closed will be described. Even if the curtain 4 is pushed and opened in the surface pressure direction by human force at the time of the escape, in this case, the longitudinal direction of the group of the engaging members 14 along the both side edges of the curtain 4 is uniformly related to the inner wall portion of the side rail 1. Therefore, even if the fully-closed curtain 4 is strongly pressed by human power, it is very difficult to remove it from the side rails 1.

  Therefore, by simply closing the fastener 17 provided on the fully closed curtain 4 that cannot be operated due to a power failure or the like and pulling up the slider 18a held at the lower end of the fastener 17 by the operation lever 18 connected thereto, The fastener 17 can be easily opened. For this reason, a person trapped by the inoperable fully closed curtain 4 can open the fastener 17 himself and escape quickly.

  When the curtain 4 is lifted after an emergency such as a power failure is released, the slider 18a that is lifted and held at the upper end of the fastener 17 to open the fastener 17 is moved upward in the process of lifting the curtain 4. It contacts the stopper 19. Even after this contact, the curtain 4 continues to move upward, so that the slider 18a is pulled down relative to the curtain 4 that is moving upward and returns the fastener 17 to the closed position. At the return position, the curtain 4 automatically stops and, at the same time, the opening upper limit position (operation origin position) of the curtain 4 is reset based on the stop position.

  The resetting of the opening upper limit position, that is, correction control of the operation origin position of the curtain 4 will be described in more detail. The shutter control means is configured to raise (open) the curtain 4 at a low speed when the curtain 4 during the raising operation approaches a preset opening upper limit position of the curtain 4.

  By such an upward movement control of the curtain 4, the slider 18a pulled up and held at the open position of the fastener 17 comes into contact with the upper limit stopper 19, and after the contact, the curtain 4 continues the upward movement at a low speed, When the slider 18a is relatively pulled down to reach the fully closed position of the fastener 17, the torque of the opening / closing machine 5 becomes larger than the original torque value that sets the open upper limit position. The torque of the opening / closing device 6 at this time is detected by a sensor, and the shutter control means inputs the detection signal, and the shutter control means stores the curtain position information value at the time of input from the sensor, thereby The open upper limit position of 4 is automatically reset. Further, preferably, by adding or subtracting the information on the stroke amount of the curtain 4 stored in advance to the position information value of the new opening upper limit position, or the curtain position information value at the time of input from the sensor and the original opening. By comparing the position information value of the upper limit position with the position information value of the original closing lower limit position, the closing lower limit position of the curtain 4 is automatically reset.

  According to the first embodiment described above, the fastener 17 is provided in the vertical direction as an emergency escape opening / closing portion on the curtain 4 that moves up and down between the left and right side rails 1 and the slider 18a that opens and closes the fastener 17 is pulled up. Since the fastener 17 is thus opened, normally, the curtain 4 can be moved up and down with the slider 18a lowered and the fastener 17 fully closed, so that the airtightness when the curtain is fully closed is achieved. In addition to ensuring the safety, it is possible to quickly escape by opening the fastener 17 simply by pulling up the slider 18a by an artificial operation in the event of an emergency due to a power failure or the like when the curtain is fully closed.

  In particular, in the first embodiment, since the upper limit stopper 19 for bringing the slider 18a into contact with the raising operation of the curtain 4 is disposed at the upper limit opening position of the curtain 4 in the vicinity of the curtain entrance / exit of the curtain storage box 2, an emergency situation occurs. Only by raising the curtain 4 after the release, there is an effect that the slide 18a at the lifting position that opens the fastener 17 of the curtain 4 can be automatically returned to the fully closed position of the fastener 17. That is, when the curtain 4 is lifted, the slider 18a at the lifting position comes into contact with the upper limit stopper 19, and the curtain 4 after the contact continues to move up, so that the slider 18a is relatively lowered and the fastener 17 is moved. Automatically returns to the fully closed lower limit position.

  In addition, as described above, when the slider 18a that remains in contact with the upper limit stopper 19 by the raising operation of the curtain 4 returns to the fully closed lower limit position of the fastener 17, the torque of the switch 5 at this time is detected by the sensor. Thus, there is an effect that it is possible to automatically correct the open upper limit position (operation origin position) of the curtain 4 by the shutter control means for inputting the detection signal.

  Therefore, according to the first embodiment, the vertical fastener 17 provided on the curtain 4, the slider 18 a for opening and closing the fastener 17, and the curtain 4 ascending operation are arranged at the upper limit position for opening the curtain 4. The upper limit stopper 19 that abuts the slider 18a at the time, the emergency escape function when an emergency occurs due to a power failure, the automatic closing function of the fastener 17 after the emergency is canceled, and the automatic correction function of the opening upper limit position of the curtain 4 It is possible to realize the above.

  In the first embodiment, the fastener 17 is provided closer to the lower portion of the curtain 4 in the drawing, but the upper end of the fastener 17 may be closer to the upper portion, and may extend to the upper end of the curtain or the vicinity thereof. The lower end of the fastener 17 does not extend to the lower end of the curtain 4 in the drawing, but may extend to the lower end of the curtain 4. Furthermore, the slider 18a may be always exposed, and may be covered with a peelable cover sheet 16 like an emergency belt 20 described in the second embodiment to be described later. In addition, when the slider 18a is normally covered with the peelable cover sheet 16, the cover sheet 16 peeled off when the fastener 17 is used for emergency escape or the like is corrected for the operation origin position while being peeled off. Then, after performing the operation origin position correction, it may be restored if necessary.

Embodiment 2. FIG.
5 is a partially cutaway perspective view showing a sheet shutter according to Embodiment 2 of the present invention, and FIG. 6 is an enlarged front view partially showing the lower side edge of the curtain in FIG. The same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.
In the first embodiment, the vertical fastener 17 provided on the curtain 4 is used as an emergency escape opening / closing portion. However, in this second embodiment, the engagement element 14 group and the side rail at the lower side edge of the curtain 4 are used. 1 is an opening / closing part for emergency escape.

  That is, in the second embodiment, an engagement releasing operation member (opening operation member) 22 for pulling out the engaging group 14 from the side rail 1 is provided in the vicinity of the side edge at the lower end of the curtain 4. The curtain connecting member 21 that connects and fixes the disengagement operation member 22 to the curtain 4 is configured to abut on the upper limit stopper 19 at the opening upper limit position of the curtain 4.

  More specifically, the disengagement operation member 22 is an emergency release belt member (hereinafter referred to as an emergency belt) near the lower end portion of the curtain 4 and on the lower end side of the engagement element 14 group on the curtain 4 side edge portion. The base end side of 20 is connected and fixed by a curtain connecting member 21. As the curtain connecting member 21 for connecting and fixing the base end side of the emergency belt 20 to the curtain 4 in this way, for example, bolts, nuts, rivets and the like are applied. This is a protrusion in the disengagement operation member 22 for correcting the operation origin position. Therefore, the curtain connecting member 21 is firmly fixed to the curtain 4 at the base end side of the emergency belt 20 and protrudes on the surface of the curtain 4, and abuts on the upper limit stopper 19 at the opening upper limit position of the curtain 4. As long as it has a projection part, what kind of thing may be sufficient. The emergency belt 20 is covered with a cover sheet 16 that can be peeled off in a normal state. In addition, the structure for installing the cover sheet 16 on the curtain 4 so as to be peeled is arbitrary, but for example, the cover sheet 16 may be installed using a hook-and-loop fastener, a snap button, a magnet, an adhesive having a weak adhesive force, or the like. .

  Next, the operation at the time of emergency escape of the sheet shutter according to the second embodiment will be described. When exiting when an emergency occurs due to a power failure or the like when the curtain 4 is fully closed, first, the cover belt 16 is peeled to expose the emergency belt 20. Next, when the emergency belt 20 is pulled obliquely upward as shown in FIG. 7, a local traction force acts on the lowermost part of the engaging member 14 group in the side rail 1 and the engaging members 14 in the vicinity thereof. The curtain guide groove 10 of the side rail 1 (the elastically deformable lower rail portion 13 in FIG. 3) is expanded from the inner side while the group of the engagement elements 14 is sequentially bent from the engagement element 14 on the lower end side. Pulled out from. In this way, when the side edge of the curtain 4 is detached from the side rail 1, the curtain 4 can be opened to a space where it can be escaped and emergency escape can be performed.

  When the opening / closing machine 5 is started in the winding direction of the curtain 4 after the emergency such as a power failure is released, the winding drum 3 is driven to rotate to wind up the curtain 4, and in the winding process, the curtain 5 comes off from the side rail 1. The engagement element 14 group at the side edge of the curtain 4 is drawn into the upper rail portion 12 from the access passage 11 of the side rail 1 and automatically returns to the side rail 1.

  In this way, when the engagement element 14 group is returned into the side rail 1, the curtain connecting member (protrusion part) 21 such as a bolt, a nut or a rivet for fixing the emergency belt 20 to the curtain 4 is provided. It returns to the regular lifting position following the curtain 4. When the curtain 4 continues to move upward in this return state, the curtain connecting member 21 comes into contact with the upper limit stopper 19 at the open upper limit position of the curtain 4. At the time of the contact, as in the case of the first embodiment, the opening upper limit position and the closing lower limit position of the curtain 4 are automatically reset (corrected) by the shutter control means, and at the same time, the switch 5 is stopped.

  Therefore, even in the case of the second embodiment, the curtain 4 can be easily opened by the emergency belt 20 provided in the fully closed curtain 4 that cannot be operated due to a power failure or the like, and the emergency There is an effect that the upper limit position of the curtain 4 can be automatically reset by the curtain connecting member 21 of the belt 20 and the upper limit stopper 19.

It is a partially cutaway perspective view showing a sheet shutter according to Embodiment 1 of the present invention. It is an expanded sectional view which shows the side rail attachment part in FIG. It is a perspective view which expands and shows the side rail in FIG. 1 and FIG. FIG. 2 is an enlarged front view partially showing a lower side edge of the curtain in FIG. 1. It is a partially notched perspective view which shows the sheet shutter by Embodiment 2 of this invention. FIG. 6 is an enlarged front view partially showing a lower side edge of the curtain in FIG. 5. FIG. 6 is an operation explanatory diagram at the time of emergency escape with the seat shutter fully closed in FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side rail 2 Curtain storage box 3 Winding drum 4 Curtain 5 Opening / closing machine 6 Rail main body 7 Rail holder 8 Spring 9 Rail cover 10 Curtain guide groove 11 Access path 12 Upper rail part 13 Lower rail part 14 Engagement element 15 Weight 16 Cover sheet 17 Opening / closing part 18 Opening operation member 18a Protrusion 19 Upper limit stopper 20 Emergency belt 21 Curtain connecting member 22 Disengagement operation member

Claims (2)

In a seat shutter comprising a pair of left and right side rails, a sheet-like curtain that moves up and down between the side rails, and a driving means that drives the curtain to move up and down,
An opening / closing part for emergency escape which is provided on the curtain and is normally kept in a closed state, and a projection for correcting the operation origin position of the curtain for opening the opening / closing part for emergency escape An opening operation member, and an upper limit stopper that is disposed at the opening upper limit position of the curtain and abuts the protrusion of the opening operation member when correcting the operation origin position of the curtain ,
The emergency escape opening / closing part consists of a vertical fastener provided on the curtain, and the slider that opens and closes this fastener is an opening operation member that also serves as a projection for correcting the operation origin position of the curtain. The fastener is opened by pulling up, and the slider at the pull-up position comes into contact with the upper limit stopper by the raising operation of the curtain and is relatively lowered by continuing the raising operation of the curtain to return the fastener to the closed position. The sheet shutter is characterized in that the operation origin position of the curtain is corrected at the return position . The return of the fastener to the closed position is based on the fact that the torque of the switch when the fastener reaches the fully closed position is larger than the original torque value that sets the open upper limit position. The sheet shutter according to claim 1, wherein the sheet shutter is detected.

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