JP2019214851A - Shutter device for construction - Google Patents

Abstract

To attach a steady rest member 14 and an extension member 17 inserted into a guide groove 2a of a guiderail to left and right end parts of both seat plate parts 8, 9, and to detect an obstacle in the guide groove 2a of the guiderail, in a shutter device 1 for a construction for constituting a seat plate 7 by an upper seat plate part 8 serially connected to the lowest end slat 3a, and a lower seat plate part 9 movably arranged at the upper seat plate part 8, and detecting the obstacle by receiving the upward movement of the lower seat plate part 9 with respect to the upper seat plate part 8.SOLUTION: A steady rest member 14 is elongated in a length toward the outside of a left-and-right direction rather than an extension member 17, and inserted into a guide groove 2a together with the extension member 17. The steady rest member 14 comprises a fitting part 14h to/from which the extension member 17 freely goes in and out to a vertical direction, and a connecting part 14i connected in a fore-and-aft direction at the outside of the fitting part 14h in the left-and-right right direction.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a technical field of an architectural shutter device provided with an obstacle detecting unit installed at an opening such as an entrance that can pass in the front-rear direction of a building.

Conventionally, as an obstacle detection device for a building shutter device, an upper seat plate portion is connected to the lowermost end of a shutter curtain, and a lower seat plate portion is attached to the upper seat plate portion so as to be vertically movable with respect to the upper seat plate portion. It is proposed that the upward movement of the lower seat plate portion is regarded as an obstacle detection operation, and this is detected by an obstacle detection sensor.
In such an obstacle detection device, since the front-rear width of the seat plate is wider than the groove width of the rail groove in the guide rail, the left-right width is narrower than the left-right width of the shutter curtain. It is difficult to detect obstacles near the rail or in the rail groove. Therefore, the extension member is inserted into the rail groove by integrally attaching the extension member to the lower seat plate portion while projecting outward in the left-right direction from the left and right ends of the lower seat plate portion. When an obstacle comes into contact with the extension member in the rail groove, the lower seat plate moves upward together with the extension member to activate a detection switch (for example, Patent Document 1). reference.).
In this case, the anti-sway member is integrally attached to the upper seat plate in a state protruding outward from the left and right ends in the left-right direction, and the anti-sway member is inserted into the rail groove. And In this case, the steadying member is configured as a zigzag shape with an open lower surface, and when the extending member of the lower seat plate contacts an obstacle and moves upward with respect to the steadying member, the extending member is moved. The lower seat plate, which is inserted into the steady member through the opening of the steady member and moves up together with the extension member, performs the detection operation of the obstacle detecting sensor.

JP-A-10-102949

  By the way, in such an obstacle detection device, when the steady rest member is fully closed, it may be in contact with the floor surface, so that it must be considered in terms of strength. It is constructed so that it has a shape like a Japanese character with an opening, so the strength will be weak, and when it comes into contact with the extension member or guide rail, the opening may be opened or deformed, Here, there is a problem to be solved by the present invention.

SUMMARY OF THE INVENTION The present invention has been made to solve these problems in view of the above situation, and the invention of claim 1 is directed to a guide groove of a left and right standing guide rail to open and close. An upper seat plate portion provided with an actuated shutter curtain, provided on the lowermost slat of the shutter curtain, and a lower seat plate provided on the upper seat plate portion so as to be vertically movable. In the architectural shutter device configured to detect the obstacle by receiving the upward movement of the lower seat plate portion with respect to the upper seat plate portion, the left and right ends of the both seat plate portions are guide grooves of the guide rail. At the left and right ends of the upper seat plate portion, anti-sway members to be inserted into the guide grooves of the guide rails are attached, and left and right ends of the lower seat plate portion are set. In the guide rail In the configuration in which the extension member to be inserted into the inner groove is attached, the anti-sway member is longer outward in the left-right direction than the extension member, and is inserted into the guide groove together with the extension member. Wherein the steady rest member is provided with a fitting portion into which the extension member is freely inserted in and out of the vertical direction, and a connecting portion connected in the front-rear direction on the outer side in the left-right direction of the fitting portion. The architectural shutter device.
The invention according to claim 2 is the architectural shutter device according to claim 1, wherein a gap is provided between a lower end edge of the steady rest member and an upper end edge of the extension member. .
The invention according to claim 3 is characterized in that, in a state in which the lower seat plate is moved upward with respect to the upper seat plate, the lower end edge of the steady rest member and the lower end edge of the extension member are flush. An architectural shutter device according to claim 1.
The invention according to claim 4, wherein the lower end edge of the fitting portion of the steady rest member is formed in a folded portion facing inward in the front-rear direction. Shutter device.
The invention according to claim 5 is characterized in that the extension member is integrally formed with a lower seat plate cover that covers an outer edge in the left-right direction of the lower seat plate. It is an architectural shutter device as described.
In the invention according to claim 6, an upper seat plate cover for closing the outer edge is provided at an outer edge in the left-right direction of the upper seat plate, and a lower seat plate is provided on the lower seat plate cover. The architectural shutter device according to claim 5, wherein a step-like portion is formed so as to enter inside the upper seat plate cover when moving.
The invention according to claim 7 is the architectural shutter device according to any one of claims 1 to 6, wherein the extension member is formed in a U-shaped cross section.

According to the first aspect of the present invention, the strength of the steadying member can be made sufficient, and the obstacle can be reliably detected at the guide rail or in the guide rail guide groove.
According to the second aspect of the present invention, even when the lower seat plate portion and the extension member are in contact with an obstacle and are inclined, it is possible to smoothly move upward.
According to the third aspect of the present invention, the lower end edges of the steady rest member and the extension member are flush with each other, so that the gap can be closed and the appearance can be improved.
According to the fourth aspect of the present invention, since the folded piece is formed, the lower end edge portion of the fitting portion can smoothly move up and down in the guide rail guide groove.
According to the fifth aspect of the present invention, it is possible to reduce the number of parts and increase the work efficiency.
According to the sixth aspect of the present invention, not only can the positional deviation of the upper and lower seat plates in the left and right direction be restricted, but also the upward movement of the lower seat plate relative to the upper seat plate can be smoothly guided.
According to the invention of claim 7, the strength of the extension member can be made sufficient.

It is a front view of an architectural shutter device. It is a front view of a seat plate. It is an enlarged side view of a seat plate. It is an enlarged front view of a steady rest member part of a seat plate. It is an enlarged plan view of a steady rest member part of a seat plate. (A), (B), (C), and (D) are a left side view, a front view, a right side view, and a bottom view of the steady rest member. (A) and (B) are a perspective view and a development view of the steady rest member. (A), (B), (C), and (D) are a plan view, a left side view, a front view, and a right side view of the lower seat plate cover and the extension member. (A) (B) is a perspective view which shows a mode that the lower seat plate cover and the extension member move up and down with respect to the steady member. (A) (B) is a perspective view which shows a mode that the lower seat plate cover and the extension member move up and down with respect to the steady member. (A), (B), and (C) are a front view and a side view showing how the lower seat plate cover and the extension member move upward with respect to the steady rest member. (A) and (B) are a perspective view and a development view of a steady member according to the second embodiment. (A) (B) is a perspective view showing a state in which the lower seat plate cover and the extension member in the second embodiment move up and down with respect to the steady member. (A), (B), and (C) are an enlarged plan view, a front view, and a side view of a steady rest member portion of a seat plate in a reference example.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes an architectural shutter device (architecture opening / closing device) provided for opening and closing an opening that can pass in the front-rear direction, and the architectural shutter device 1 is provided on both left and right sides of the opening. A guide rail 2, a shutter curtain (opening / closing body) 3 that opens and closes an opening by being guided up and down (up and down) by the guide rail 2, and is provided at an upper end of the opening, and the shutter curtain 3 is wound thereon. The winding drum 4, an electric switchgear 5 for driving the winding drum 4 in the normal and reverse directions, and a control unit 6 for controlling the operation of the switchgear 5 are all provided with various members. As before. In addition, the definition of the front-back direction is defined as the direction that normally passes through the opening, the front-rear direction, the front side is referred to as “front”, and the opposite side (the other side, the hand side) is referred to as “rear” with respect to the opening. Although the preceding and following definitions are provided for convenience, it is needless to say that the present invention is not limited to this.

  At the lowermost ends of the front and rear shutter curtains 3, there are provided seats 7 long in the left-right direction which are set to a length not to be inserted into the guide grooves 2 a of the guide rails 2. An upper seat plate portion 8 connected (provided) to the lowermost slat 3a, a lower seat plate portion 9 provided to be vertically movable with respect to the upper seat plate portion 8, and an intermediate portion between the upper and lower seat plate portions 8, 9. An intermediate detection member 10 is provided, and an obstacle detection sensor 11 provided on the upper seat plate 8 in a state of being disposed between the upper seat plate 8 and the intermediate detection member 10.

The upper seat plate portion 8 has an opening on the lower side (lower edge), and is formed in a zigzag shape having an upper piece portion 8a on the ceiling side and side pieces 8b on both front and rear sides. In the present embodiment, the upper piece portion 8a has a first upper piece portion 8d in which the center (intermediate) portion in the front-rear direction is higher with the front and rear step piece portions 8c facing up and down. It is formed in a convex shape having a second upper piece 8e disposed in front and rear lower than the one upper piece 8d, but the upper part in the front-rear center (intermediate) portion of the first upper piece 8d A connecting piece 8f is formed so as to protrude toward. In the upper seat plate 8, the connecting piece 8f is fixed to the lowermost slat 3a via a bolt 3b which is a fastener.
Further, the side piece portion 8b is provided in a hanging manner from an outer edge in the front-rear direction of the second upper piece portion 8e. One piece 8g is formed to protrude. A portion of the horizontal piece 8g extending toward the opposite side (opposite side) of the side piece 8b is provided with a locking support for receiving and locking the lower seat plate 9 as described later. 8h.

  On the other hand, the lower seat plate portion 9 has an upper opening, a lower lower portion 9a, and front and rear side pieces 9b provided upright from both longitudinal edges of the lower piece 9a. The side piece 9b has a lower first side piece 9c standing upright from both front and rear edges of the lower piece 9a, and the first side piece 9b. A step piece 9d formed to face inward in the front-rear direction from the upper end of the section 9c; a second side piece 9e formed upward from the front-rear inner end of the step piece 9d; An upper piece 9f formed horizontally from the upper end of the two-side piece 9e outward in the front-rear direction is provided. In the present embodiment, the upper piece 9f is provided between the front and rear first side pieces 9c. , And the second side piece 9e, a recessed space S is formed so as to continue in the vertical direction.

  The lower seat plate portion 9 has the second side piece 9e loosely fitted (with a gap (gap) in the front-rear direction) at the inner end in the front-rear direction of the upper seat plate lock receiving portion 8h. Thus, the upper piece 9f is configured to be movable up and down with the position where the upper piece 9f is locked on the upper surface of the locking receiving portion 8h as the lower limit and the position where the step piece 9d abuts on the lower surface of the locking receiving piece 8h as the upper limit. However, the lower seat plate portion 9 has a natural lowering posture when the front and rear upper pieces 9f are received and locked by the front and rear lock receiving portions 8h of the upper seat plate portion 8, respectively. Thus, the upper piece 9f forms a locking portion for locking the lower seat plate 9 to the upper seat plate 8.

  In the process of closing the opening where the shutter curtain 3 is lowered, an obstacle comes into contact with the lower seat plate 9 from below, so that the lower seat plate 9 moves upward with respect to the upper seat plate 8. In response to this, the intermediate detection member 10 swings and the obstacle detection sensor 11 is set to switch from the non-detection state to the detection state (switched). .

Next, the left and right outer edges of the seat plate 7 will be described.
The outer edge of the upper seat plate 8 in the left-right direction is closed by attaching an upper seat plate cover 12 having a surface portion 12 a having substantially the same shape (convex shape) as the outer edge of the upper seat plate 8. I have. The upper seat plate cover 12 has a first mounting piece 12b inserted from the surface 12a inside the side piece 8b of the upper seat plate 8, and a first mounting piece 12b from an upper end toward the inner surface side. A second mounting piece 12c bent into an L shape and inserted into the inner surface of the second upper piece 8e, and a third mounting piece inserted into the lower face of the upper seat plate first upper piece 8d. The portion 12d is formed to extend inward in the left-right direction. Then, the second mounting piece 12c and the second upper piece 8e of the upper seat plate are screwed and fixed by the screw 13 in a state where the respective mounting pieces 12b, 12c, 12d are inserted into the upper seat plate 8. The upper seat plate cover 12 is attached to the upper seat plate portion 8.

Further, the anti-sway member 14 is attached so as to protrude outward in the left-right direction (the depth side of the groove of the guide rail 2) from the outer edge in the left-right direction of the upper seat plate 8.
The steady rest member 14 is formed by bending a metal plate material, and forms a single plate material into a bottom portion 14a and a pair of upper portions extending upward from both front and rear ends of the bottom portion 14a. A rectangular tube-shaped tube portion 14d is formed by being bent so as to have a side surface portion 14b and a pair of front and rear upper surface portions 14c facing inward in the front-rear direction from the upper end edge of the side surface portion 14b. The mounting piece 14e is further bent upward from the inner edge of the upper surface section 14c, and an extension piece 14f is flush with the inside of the one mounting piece 14e in the left-right direction. A long hole 14g formed in the extension piece 14f is fastened to the lowermost slat 3a and the connecting piece 8f of the upper seat plate 8 together with the above-mentioned bolt 3b to prevent steadying. The member 14 is attached to the upper seat plate 8.
Moreover, the bottom portion 14a is open at an inner portion in the left-right direction, and is formed with a fitting portion 14h described later. The outer portion in the left-right direction of the fitting portion 14h is a connecting portion 14i in which front and rear side portions 14b are connected to each other. It has become.
In addition, the lower end edge of the portion corresponding to the fitting portion 14h of the side surface portion 14b is a bent portion 14k having a folded piece portion 14j that is folded inward in the front-rear direction.

  On the other hand, an outer edge in the left-right direction of the lower seat plate portion 9 is closed by attaching a lower seat plate cover 16 made of a surface material having a convex shape in a side view. The lower seat plate cover 16 includes an upper half 16a for closing the upper half of the lower seat plate 9, and a wide lower half 16b for closing the lower half. Has a stepped portion 16c in the middle part in the vertical direction, and is composed of an upper first upper half 16a1 and a lower second upper half 16a2, but is flush with the lower half 16b. From the second upper half 16a2, there is a first upper half 16a1 that is deflected inward in the left-right direction with respect to the lower half 16b, with the stepped portion 16c existing. A pair of front and rear notches 16d are formed in the lower half 16b at the center in the front and rear direction, and an extension member 17 is inserted into the notch 16d from below as described later. Has become.

Next, the extension member 17 will be described. The extension member 17 is formed such that the extension portion 17a protrudes outward in the left-right direction. The extension portion 17a has a pair of front and rear side portions 17b and a bottom portion 17c, and is formed in a U-shape having an open upper surface. Have been. From the left and right inner ends of the side surface portion 17b, an extending portion 17d extending in a state of being bent in an L shape outward in the front and rear direction, and further extending in the left and right direction from the extending portion 17d. And an engaging portion 17e that is bent toward the L-shape.
The extension member 17 is provided with the front and rear side surfaces 17b of the extension portion 17a inserted into the cutout portions 16d of the lower seat plate cover 16, and the left and right outer surfaces of the extension portion 17d of the extension member 17 and the lower seat plate. The unit cover 16 is integrated by joining the inner surface in the left-right direction via fixing means such as welding.

  The extension member 17 integrated with the lower seat plate cover 16 in this manner, the locking portion 17e is inserted into the lower seat plate first side piece 9c, and the locking portion 17e and the lower seat are inserted. The lower seat plate cover 16 and the extension member 17 are attached to the lower seat plate portion 9 by fixing and fixing the plate portion first side piece portion 9c with the rivet 18.

Next, an upper seat plate cover 12 and an anti-sway member 14 were attached to the seat plate 7, the upper seat plate 8, and a lower seat plate cover 16 and an extension member 17 were attached to the lower seat plate 9. With respect to the shutter curtain 3 in the state, movements of these members during opening and closing operations will be described.
First, when the shutter curtain 3 is fully opened, as shown in FIGS. 9 (A), 10 (A), and 11 (A), a bottom surface portion 14a which is a lower end edge portion of the steady rest member 14 and an extension member side surface portion. Since the lower seat plate portion 9 is suspended from the upper seat plate portion 8 between the upper seat edge portion 17b and the upper end edge portion 17b, there is a gap S1. In addition, the left and right lengths of the steady rest member fitting portions 14h are set to be longer than the left and right lengths of the extended member extension portions 17a, and the steady rest members 14 are together with the extension member extended portions 17a in the guide rail guide grooves 2a. Has been inserted.
When the shutter curtain 3 is lowered from this state in the closing direction and an obstacle comes into contact with the extension member bottom surface portion 17c, the extension member 17 is moved together with the lower seat plate portion 9 as shown in FIG. Begin to move up against part 8. At this time, the extension portion 17a of the extension member is fitted into the steady rest member fitting portion 14h, and the first upper half portion 16a1 of the lower seat plate cover 16 is moved in the left-right direction by the stepped portion 16c. The upper half 16a of the lower seat plate cover is inserted into the inner surface of the upper seat plate cover surface portion 12a while being guided by the upper seat plate cover 12.
Then, as shown in FIGS. 9 (B), 10 (B), and 11 (C), when the lower seat plate portion 9 has finished moving up with respect to the upper seat plate portion 8, the lower edge portion of the extension member 17 Is configured to be flush with the bottom surface 14a (connecting portion 14i), which is the lower edge of the steady member.
At this time, the steady rest member 14 comes into contact with the floor surface, but since the lower end edge of the side surface portion 14b is a bent portion 14k in which the folded piece portion 14j is bent, the shutter curtain 3 is moved up and down. When moved, the lower end edge portion can move up and down smoothly without being caught in the guide rail guide groove 2a, and the strength of the lower edge portion can be ensured. .

In the case where the lower seat plate portion 9 comes into contact with an obstacle, the extension portion 17a of the extension member similarly enters the inside of the steady rest member 14.
Also, when the shutter curtain 3 is fully closed and the lower seat plate portion 9 and the extension portion 17a come into contact with the floor surface, the extension portion 17a of the extension member similarly enters the fitting portion h of the anti-sway member 14, When fully closed, the bottom surface 17c, which is the lower edge of the extension member 17, is flush with the bottom 14a (connection portion 14i), which is the lower edge of the steady member. The same applies to points.

On the other hand, when the shutter curtain 3 in the fully closed state shown in FIGS. 9B, 10B, and 11C is raised to be in the open state, the upper seat plate portion 8 is raised with the rise of the shutter curtain 3. Rises (FIG. 11B), but the lower seat plate 9 moves downward relative to the upper seat plate 9 and hangs down from the upper seat plate 8 (FIG. 9 (A)). ), FIG. 10 (A), FIG. 11 (A)). At this time, in the extension member 17, the extension portion 17a comes out downward from the steady-state member fitting portion 14h, and the bottom portion 14a, which is the lower edge of the steady-state member 14, and the upper end edge of the extended member side surface portion 17b. A state in which the gap S1 exists during the period.
As described above, the extension member insertion portion 14h is configured such that the extension member extension portion 17a is freely inserted in and out of the up-down direction, and when the extension member 17 moves up with respect to the steady member 14, the extension portion 17a It is configured to move up to fit into the steadying member fitting portion 14h, and to move down to come out of the extension member fitting portion 14h.

  In the first embodiment in which the present invention is implemented as described above, the steady rest member 14 is longer outward than the extension member 17 in the left-right direction, and is provided together with the extension member 17 in the guide rail guide groove 2a. The anti-sway member 14 includes a fitting portion 14h into which the extension member 17 is freely inserted in and out of the up-down direction, and a connecting portion 14i connected in the front-rear direction outside the fitting portion 14h in the left-right direction. It has. Therefore, since the anti-sway member connecting portion 14i is provided on the outer side in the left-right direction of the extension member 17, while the insertion portion 14h having the bottom surface opened for the extension member 17 to be inserted is provided, The strength of the stop member 14 becomes sufficient. By inserting the steady rest member 14 and the extension member 17 into the guide rail guide groove 2a, it is possible to reliably detect an obstacle at the time of the guide rail or in the guide rail guide groove 2a.

Further, since a gap S1 is provided between the lower end edge (bottom portion 14a) of the steady rest member 14 and the upper end edge of the extension member extension portion 17a, the lower seat plate portion 9 and the extension member 17 are provided. Even in a case where the extension member 17 is moved upward in an inclined state in contact with an obstacle, the extension member 17 can smoothly enter the steady rest member fitting portion 14h without causing resistance.
Further, when the lower seat plate portion 9 is moved upward with respect to the upper seat plate portion 8, the bottom surface portion 14a of the steady rest member 14 and the extension member bottom surface portion 17c are flush with each other, so that the gap S1 is closed. State.
Furthermore, a folded piece portion 14j facing inward in the front-rear direction is formed at the lower end edge of the steady rest member fitting portion 14h, so that when the shutter curtain 3 is moved up and down, the lower end edge portion is formed. Can smoothly move up and down without being caught in the guide rail guide groove 2a, and the strength of the steady rest member 14 including the fitting portion 14h can be secured.

Further, since the lower member plate cover 16 that covers the outer edge of the lower member 9 in the left-right direction is formed integrally with the extension member 17, the number of components at the time of installation can be reduced.
Further, an upper seat plate cover 12 for closing the outer edge is provided at an outer edge in the left-right direction of the upper seat plate portion 8, and a lower seat plate portion 9 is provided on the lower seat plate cover 16. A step 16c is formed so as to enter inside the upper seat plate cover 12 when moving. Thereby, the positional displacement of the upper and lower seat plates 8, 9 in the left-right direction can be regulated, and the upward movement of the lower seat plate 9 is smoothly guided by the step-like portion 16c.
Furthermore, since the extension member 17 comes into contact with a floor surface or an obstacle at the time of closing, it needs strength, but the extension member extension portion 17a of the present embodiment has an upper surface. By forming an open U-shaped cross section, sufficient strength is ensured.

It should be noted that the present invention is not limited to the above-described embodiment, and the shape of the steadying member may be the same as that of the steadying member 20 of the second embodiment shown in FIGS. You can also.
The steady rest member 20 is formed by bending a metal plate material in the first embodiment, and is formed by bending a single plate material into left and right outer end surface portions 20a and left and right outer end surface portions 20a. A pair of side portions 20b extending inward in the left-right direction from both front and rear ends, a pair of front and rear upper portions 20c facing inward in the front-rear direction from the upper edge of the side portions 20b, and an inner edge of the upper portion 20c. The mounting piece 20d is directed upward, and the lower end edge of the side face 20b is formed with a folded piece 20e that is folded inward in the front-rear direction. An extension piece 20f in which a long hole 20g is formed is formed flush with the inside in the direction. In the present embodiment, the left and right outer end surfaces 20a serve as connecting portions.
In this case, as the lower seat plate cover, the same lower seat plate cover 16 as that of the first embodiment can be used, and the same extension member can be used. Can be extended to the left and right outer end surface portions 20a. By doing so, the extension member 21 is inserted to a deep portion of the guide rail guide groove 2a, and it is possible to detect an obstacle to a deeper portion.

  Further, as shown in FIG. 14 as a reference example, in the seat plate 30 of the pipe type shutter device, similarly, the upper seat plate portion 31 and the lower seat plate portion 32 are also used as the upper seat plate of the first embodiment. The unit cover 12, the lower seat plate unit cover 16 and the extension member 17 integrated with each other can be used. On the other hand, in this case, the steady rest member 33 does not have a fitting portion, and when the lower seat plate portion 32 moves upward with respect to the upper seat plate portion 31, the upper end edge portion of the extension portion 17 a and the steady rest member 33 are formed. It can be configured so that the bottom surface portion 33a faces the bottom portion 33a.

  INDUSTRIAL APPLICABILITY The present invention can be used for an architectural shutter device provided with an obstacle detecting means installed at an opening such as an entrance that can pass in the longitudinal direction of a building.

DESCRIPTION OF SYMBOLS 1 Building shutter device 2 Guide rail 2a Guide groove 3 Shutter curtain 3a Lowermost slat 7 Seat plate 8 Upper seat plate portion 9 Lower seat plate portion 12 Upper seat plate portion cover 14 Anti-sway member 14h Fitting portion 14i Connecting portion 14j Folding piece portion 16 Lower seat plate cover 16a Upper half 16b Lower half 16c Stepped portion 17 Extension member 17a Extension 17b Side 17c Bottom

Claims (7)

A shutter curtain that is guided by the guide grooves of the guide rails erected on the left and right and that opens and closes is provided, and a seat plate provided at the lowermost slat of the shutter curtain is connected to the lowermost slat with an upper seat plate portion connected in series. A lower shutter plate portion provided to be vertically movable on the upper seat plate portion, and configured to detect an obstacle by receiving an upward movement of the lower seat plate portion with respect to the upper seat plate portion,
The both seat plate portions are set to a left and right length such that both left and right end portions are not inserted into the guide groove of the guide rail,
At each of the left and right ends of the upper seat plate portion, a steadying member to be inserted into the guide groove of the guide rail is attached,
On each of the left and right ends of the lower seat plate portion, an extension member to be inserted into the guide groove of the guide rail is configured as attached.
The steady rest member is longer outward in the left-right direction than the extension member, and is inserted into the guide groove together with the extension member,
The architectural shutter, wherein the steady rest member includes a fitting portion into which the extension member is freely inserted in and out of the up-down direction, and a connecting portion connected in the front-rear direction on the outer side in the left-right direction of the fitting portion. apparatus.   The architectural shutter device according to claim 1, wherein a gap is provided between a lower end edge of the steady rest member and an upper end edge of the extension member.   The lower end edge portion of the steady rest member and the lower end edge portion of the extension member are flush with each other when the lower seat plate portion is moved upward with respect to the upper seat plate portion. Architectural shutter device.   4. The architectural shutter device according to claim 1, wherein a lower edge of the fitting portion of the steady rest member is formed in a folded portion facing inward in the front-rear direction. 5.   The architectural shutter device according to any one of claims 1 to 4, wherein the extension member is integrally formed with a lower seat plate cover that covers an outer edge in the left-right direction of the lower seat plate.   An upper seat plate cover for closing the outer edge is provided at an outer edge in the left-right direction of the upper seat plate, and the lower seat plate cover includes an upper seat plate cover when the lower seat plate moves upward. 6. The architectural shutter device according to claim 5, wherein a step portion is formed so as to enter the inside of the shutter.   The architectural shutter device according to claim 1, wherein the extension member has a U-shaped cross section.

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