JPH047486A - Safety device for shutter device - Google Patents

Abstract

PURPOSE:To secure safety for a shutter device by stopping urgently a driving means when a tape switch provided along guide rails operates with the rising of a risk sensing means projected downward from the lowest end of a shutter means. CONSTITUTION:A shutter device equipped with a shutter means 7 rising and falling along a pair of right and left guide rails 1 arranged on both ends of an opening for opening and shutting of a shutter and a driving means to raise, lower and drive the shutter means 7 is provided. After that, a risk sensing means 12 is placed along the lowest end of the shutter means 7, and it is capable of vertical motion within the constant height against the lowest end. When the risk sensing means 12 is brought into contact with a foreign mater X, etc., to make rising operation, a switch operation means 13 driven thereby is provided. A tape switch 21 is provided along at least one guide rail 1, when the switch operation means 13 is driven, the tape switch 21 is pushed, and a driving means of the shutter device 7 is thereby stopped urgently.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a safety device for a shutter device such as a panel shutter device that opens and closes a shutter opening such as an entrance/exit of a building or a window.

[Conventional technology]

FIG. 6 is a schematic front view showing a conventional panel shutter device, and FIG. 7 is a schematic cross-sectional view partially enlarging a panel storage box in the panel shutter device of FIG. First, in Fig. 6, reference numeral 1 denotes a pair of left and right guide rails that are arranged vertically on both sides of the opening for opening and closing shutters such as entrances and exits of buildings and windows. It consists of a U-shaped member with an opening for lifting guides. A panel storage box (hereinafter referred to as storage box) 2 is arranged above the guide rail 1. As shown in FIG. 5, inside this storage box 2, there is a sprocket 3 for driving the panel up and down located above the entrance and exit, and a front end located near the top of this sprocket 3 with a rear end that gradually slopes downward. A support rail 4 for hanging and storing the panel is arranged. A pair of left and right chains 5 are meshed with the sprocket 3 and can move up and down within the guide rails 1 and move to the support rail 4 side in the storage box 2. These chains 5 have a normal configuration, and both sides of the chains 5 are fitted into and engaged with the guide rails 1 so as to be able to move up and down, and are adjacent to each other in the vertical direction between the guide rails 1 to form a shutter means. The upper and lower sides of each panel 6 and 7 are connected in a plurality of upper and lower stages. As a linking means, a long pin P that also serves as a link pin is provided at the panel attachment part of the chain 5 and passes through the chain link connection part, and the long pin P rotates both sides of the upper part of each of the panels 6 and 7. It has a structure that allows it to be hung freely. Further, an upper guide roller R1 is rotatably attached to the long pin P for transferring the panel onto the support rail 4 when storing the panel, which will be described later. On the other hand, the panel 6.7 has a configuration shown in FIG. 7 as an example. That is, each panel 6.7 has a shape in which a fitting convex strip 8 is provided in the longitudinal direction of the upper end of each panel, and a fitting concave strip 9 is provided in the longitudinal direction of the lower end of each panel. When all the panels 6.7 are extended between the guide rails 1, so-called when the shutter is fully closed, the fitting protrusions 8 and the fitting grooves 9 are formed between the panels 6.7. As a result, when the shutter is fully opened, there is no gap between the panels 6 and 7. However, when storing the panel in the storage box 2,
The upper end fitting protrusion 8 of the lower panel 7 remains fitted into the lower end fitting groove 9 of the upper panel 6 which has risen along the guide rail l to the vicinity of the sprocket 3. If so, it becomes impossible to move the upper panel 6 laterally along the sprocket 3 toward the support rail 4 (panel storage direction). Therefore, in order to allow each of the panels 6.7 to be moved laterally in the storage direction, there are two sections between the panels 6.7 in the unfolded state between the guide rails 1, as shown in FIG. A gap (overlap margin) L is set to maintain the fitting protrusion 8 and the fitting groove 9 in a separated state, and each of the panels 6 and 7 is connected to each other at the panel spacing in this state as described above. They are connected by chain 5. Further, near the entrance/exit in the storage box 2, there is a guide plate (lower panel guide) for guiding the lower guide rollers R2 rotatably supported at the bottom of both sides of each panel 6.7 in the panel entrance/exit direction. 10 is the arrangement. A motor M with a speed reducer serving as a driving means is installed inside the storage box 2, and this motor M drives a sprocket 3 via a transmission chain (not shown) or the like.
The rotating shaft 3a is configured to be driven to rotate in forward and reverse directions. Next, the operation will be explained. First, with each panel 6.7 suspended and stored on the support rail 4 in the storage box 2, when the sprocket 3 is rotationally driven in the counterclockwise direction by the forward rotation of the motor M in FIG. Through the chain 5 meshed with the sprocket 3, the panels 6.7 on the support rail 4 are sequentially pulled in the unwinding direction. As a result, the upper end of each panel 6.7 is connected to the sprocket 3.
, and passes through the sprocket 3 along its circumference in the panel feeding direction. At this time, each panel 6.
The lower guide roller R2 of No. 7 is guided by the guide plate 10 in the panel feeding direction. In this way, the upper end of each panel 6.7 sequentially passes through the sprocket 3 in the panel payout direction, and at the same time, the lower guide roller R2 of each panel 6.7 passes through the guide plate 10 in the payout direction. Accordingly, each panel 6 above
．． 7 sequentially moves downward along the guide rail l. During this lowering operation, when the lowest panel 6 is not yet grounded, the fitting convex strips 8 and the fitting grooves 9 between the panels 6 and 7 are in a non-fitting state. . However, when the lowest panel 7 touches the ground, the upper panel 6 descends on top of it, causing the panels 6 to
．． The fitting protrusions 8 and the fitting grooves 9 of 7 fit together, and the panels 6 and 7 are sealed together. In this way, in the so-called shutter fully closed state in which all the panels 6.7 are completely extended between the guide rails 1, all the panels 6.7 are connected to the above-mentioned fitting convex strips 8. The fitting concave portion 9 is fitted to the fitting concave portion 9 to be sealed. When the sprocket 3 is driven in reverse rotation by the reverse rotation of the motor M from such a fully closed state of the shutter, the panels 6.7 are sequentially pulled up from the uppermost one via the chain 5 meshed with the sprocket 3. By this pulling up, the fitting between the fitting protrusions 8 and the fitting grooves 9 between all the panels 6.7 is sequentially released, and in this state, each panel 6.7 is removed from the storage box 2. They are gradually entering the interior. When the upper end of each panel 6.7 that has entered the storage box 2 approaches the sprocket 3, the lower guide roller R2 of each panel 6.7 is guided into contact with the guide plate 10. , the lower ends of each of the panels 6, 7 are forcibly swung in the panel storage direction by the guide plate IO via the respective lower guide rollers R2. At this time, contact between the lower end of the upper panel 6 and the upper end of the lower panel 7 is avoided by overlapping them. As a result, each panel 6° 7 that has entered the storage box 2 in sequence and passed the sprocket 3 and the lower guide roller R2 in the panel storage direction as described above has its upper guide roller R1 moved onto the support rail 4. It is stored suspended in a parallel folded state.

[Problem to be solved by the invention]

The conventional panel shutter device is constructed as described above, and the panels 6 and 7, which are connected in multiple stages above and below by the chain 5 and constitute the shutter means, are driven up and down by the motor M, so that when the panels are lowered, the There is a problem in that a person or an object may become accidentally caught between the lower panel 7 and the ground, causing a serious accident. This invention was made in order to solve the above-mentioned problem, and when a person or an object is unexpectedly caught between the lowest end of the shutter means and the ground etc. when the shutter means is lowered, the drive means An object of the present invention is to provide a safety device for a shutter device that can make an emergency stop.

[Means to solve the problem]

A safety device for a shutter device according to the present invention includes a pair of left and right guide rails arranged vertically on both sides of a shutter opening/closing opening, a shutter means that is raised and lowered along between these guide rails, and a shutter means that is raised and lowered between the guide rails. A shutter device comprising a driving means for driving, a danger sensing means disposed horizontally along the lowermost end of the shutter means,
A switch configured to be movable up and down within a certain height with respect to the lowest end, biased to protrude downward from the lowest end by its own weight, etc., and driven by the upward movement of the danger sensing means with respect to the lowest end. An actuating means is provided on the shutter means, and a tape switch that is pressed by the switch actuating means is provided along at least one of the guide rails, and when the tape switch is pressed by the switch actuating means, the driving means is actuated. It is configured to make an emergency stop.

[For use]

The safety device of the shutter device according to the present invention is such that when a person or an object is accidentally caught between the lowest end of the shutter means and the ground etc. when the shutter means is lowered, the danger sensing means is activated when the person or object hits the person or object. and is raised relative to the lowermost end of the shutter means. Then, the switch actuating means is mechanically driven by the rising movement of the danger sensing means. Then, the switch operating means mechanically presses the tape switch to emergency stop the drive means and emergency stop the lowering of the shutter means.

【Example】

Hereinafter, one embodiment of the present invention will be described based on the drawings. FIG. 1 is a partially cutaway front view showing a safety device of a panel shutter device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along arrows -■ in FIG. 1, and FIG. 3 (A) ', (B) is the first
4(A) and (B) are sectional views taken along the IV-IV arrow direction in FIG. 1, and FIG. 5 is a perspective view of the main parts. The same or equivalent parts as in FIGS. 6 and 7 are given the same reference numerals, and redundant explanation will be omitted. In the figure, reference numeral 11 denotes a horizontal bottom horizontal frame which is the lowest end of the lowest panel 7 of the plurality of upper and lower panels 6 and 7 constituting the shutter means. Horizontal hollow parts 11a and llb are formed. Reference numeral 12 denotes a hollow horizontal movable frame which serves as a danger sensing means, and this movable frame 12 is connected to the hollow part 11b of the bottom horizontal frame 11.
arranged horizontally inside. The movable frame 12 is moved in the vertical direction (arrow a,
b direction), and this movable frame 1
2 is forced to protrude downward (in the direction of arrow a) from the bottom horizontal frame 11 by its own weight, as shown in FIG. 3(A). The lower surface 12a of the movable frame 12 is the lower surface 11c of the bottom horizontal frame 11.
In a state where the upper horizontal flange 12b of the movable frame 12 is projected downward from the bottom horizontal frame 11,
It abuts on the horizontal partition lld between Ilb. Reference numeral 13 denotes a vertical switch lever which is a switch actuating means.The switch lever 13 is vertically mounted via a rotating shaft 14 horizontally fixed to the lower end of the switch lever 13, and is attached to a bracket 15 in the direction of arrows c and d. It is rotatably mounted. A roller 16 is rotatably attached to the upper end of the switch lever 13 via a horizontal support shaft 17. The switch lever 13 is attached to the fourth switch lever 13 by a spring 18 installed between the side plate 15a of the bracket 15.
As shown in Figure (A), the switch lever 13 is urged to rotate in the direction of the arrow C, and the upper end of the side plate 13a of the switch lever 13 is brought into contact with the side plate 15a of the mounting bracket 15 from the direction of the arrow C. Further, the rotating shaft 14 is mounted horizontally through a bracket 15, and an arm 19 is fixed to the end of the rotating shaft 14 on the opposite side from the switch lever 13. The pair of left and right switch levers 1 are mounted by vertically fixing the bracket 15 to the side surfaces 7a at both left and right ends of the lowest panel 7 with a plurality of screws 20.
3 are attached to the side surfaces 7a at both left and right ends of the lowest panel 7. An arm 19 fixed to the rotating shaft 14
is inserted into the soil hollow part 11a of the bottom horizontal frame 11 and placed above the movable frame 12. The pair of left and right guide rails 1 are constructed of U-shaped members as shown in FIG. Both left and right end portions of each panel 6.7 are inserted into the guide rail 1 of the panel. Therefore, the switch lever 13 and the roller 16 are configured to be raised and lowered within the pair of left and right guide rails 1. Reference numeral 21 denotes a pair of left and right tape switches, which are vertically mounted along the moving path of the roller 16 within the pair of left and right guide rails l. This tape switch 21 is directly connected to the power supply circuit of a motor M which is a driving means shown in FIG. Next, the operation of this safety device will be explained. As explained in FIG. 7, when each panel 6.7 is driven downward and upward along both guide rails 1 by forward and reverse rotation of the motor M, as shown in FIG. 3(A), The movable frame 12 attached to the lowest panel 7 is urged to protrude below the bottom horizontal frame 11 (in the direction of arrow a) by its own weight. In addition, as shown in FIG. 4(A), the switch lever 13
is urged to rotate in the direction of arrow C by a spring 18, and the roller 16 is spaced apart from the tape switch 21 in the direction of arrow C. Next, when the panel is lowered, as shown in FIG. 3(B), if a person or object X is accidentally caught between the bottom horizontal frame 11, which is the lowest end of the lowest panel 7, and the ground, etc. The movable frame 12 is brought into contact with a person or object X and is raised relative to the bottom horizontal frame 11 in the direction indicated by the arrow. Then, the arm 19 is pushed up by the movable frame 12 in the direction of the arrow a, and the rotating shaft 14 is rotationally driven in the direction of the arrow d. Then, as shown in the direction of FIG. 4(B), the switch lever 13 is rotated integrally with the rotating shaft 14 in the direction of arrow d against the spring 18.
The roller 16 presses a part of the tape switch 21 from the direction of arrow d. As a result, the motor M shown in FIG. 7 is brought to an emergency stop, and the lowering of each panel 6.7 by this motor M is brought to an emergency stop, thereby avoiding danger. At this time, the tape switch 21 is moved by the roller 16.
It is also possible to provide an arrangement in which, when pressed, after the motor M is brought to an emergency stop, the motor M is immediately reversed and each panel 6.7 immediately begins to rise. In the above embodiment, a pair of left and right switch levers 13 are attached to the side surfaces 7a at both left and right ends of the lower panel 7, and the switch levers 13 installed in the pair of left and right guide rails 1 are configured to be pressed by the rollers 16 of the switch levers 13. However, the switch lever 13 and the tape switch 21 may be provided only on either the left or right side. Further, in the above embodiment, the safety device of a panel shutter device was described, but the safety device of a winding type shutter device may also be used, and the same effects as in the above embodiment can be obtained.

【Effect of the invention】

As described above, according to the present invention, when the shutter means is lowered, a person or an object is accidentally caught between the lower end of the rod of the shutter means and the ground, etc., and is disposed horizontally along the lowermost end. When the danger sensing means in the shutter comes into contact with a person or object and is raised to the lowermost end, the danger sensing means mechanically drives the switch actuating means provided in the shutter means, and The tape switch provided along the guide rail is mechanically pressed by the switch actuating means to emergency stop the driving means and the lowering of the shutter means is urgently stopped.
This has the effect of preventing a serious accident from occurring due to a person or object being accidentally caught between the lowermost end of the shutter means and the ground or the like when the shutter means is lowered. Moreover, since the danger sensing means and the switch actuation means are provided on the shutter means side, and the tape switch that is pressed by the switch actuation means is provided along the guide rail, the tape switch can be directly connected to the power supply circuit of the drive means. . Therefore, it is possible to obtain a safety device with a simple structure and low cost, which does not require a wireless device that wirelessly transmits and receives tape switch signals to and from a power supply circuit of a driving means, or a battery for wireless transmission. It has the effect of

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing a safety device of a panel shutter device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along arrows -■ in FIG. 1, and FIG. 3 (A) , (B) is a sectional view taken along the mm-m arrow in Fig. 1, and Fig. 4 (A) and (B) are the 1st
5 is a perspective view of essential parts, FIG. 6 is a schematic front view showing a conventional panel shutter device, and FIG. 7 is a panel shutter device shown in FIG. 6. It is a schematic sectional view which expands and shows a part of the panel storage box in FIG. 1... Guide rail, 6, 7... Panel (shutter means), 11... Bottom horizontal frame (lowest end of shutter means)
, 12... Movable frame (danger sensing means), 13... Switch lever (switch actuation means), 21... Tape switch, M... Motor (driving means). Patent applicant Bunka Shutter Co., Ltd.
Top Lumitter Engineering Co., Ltd.

Claims (1)

[Claims] A shutter device comprising a pair of left and right guide rails arranged vertically on both sides of a shutter opening/closing opening, a shutter means that is raised and lowered along between these guide rails, and a drive means that drives the shutter means up and down. , a danger sensing means disposed horizontally along the lowermost end of the shutter means, configured to be movable up and down within a certain height with respect to the lowermost end, and biased to protrude downward from the lowermost end; a switch actuating means provided on the shutter means and driven by the upward movement of the danger sensing means relative to the lowermost end; and a switch actuating means provided along the at least one guide rail and pressed by the switch actuating means. A safety device for a shutter device, comprising: a tape switch for emergencyly stopping driving of the shutter means by the driving means.