Method for changing specifications of shutter devices for buildings

Abstract

When installing a window-type shutter device in the opening F between the kitchen X and counter room Y of the dining hall, the locking mechanism, which would normally be located on the counter room Y side when the window-type device is installed in the dining hall, is positioned on the kitchen X side. [Solution] By attaching a first-type shutter curtain 12, which is rolled up from the rear, and a second-type shutter curtain 22, which is rolled up from the front, to the second and first-type shutter devices 2 and 1 in a state where they can be reversed, it becomes possible to change the specifications to third and fourth-type shutter devices 30 and 40, where the locking devices 12f and 22f are located on the kitchen X side.

Description

Technical Field

[0001] The present invention relates to the technical field of a method for changing specifications in a shutter device for a building that opens and closes an opening of a building such as a building, a house, a garage, etc.

Background Art

[0002] Generally, a shutter device for a building may be installed to open and close an opening such as an entrance or a window of a building such as a building, a house, a garage, etc. Such a shutter device includes guide rails provided on the left and right of the opening, a shutter curtain that is guided to open and close along the guide rails to open and close the opening, a winding body (winding drum, winding wheel) arranged in the upper space (ceiling part) of the opening where the shutter curtain is wound, and a shutter case that covers the winding body, and is composed of various member devices. And when such a shutter device is, for example, a lightweight one for a window with an opening, it is common to attach the rear edge part of the shutter case to the front part (outdoor side surface part) of the housing side member (for example, wall part) above the window part (see, for example, Patent Documents 1 and 2). In such a shutter device, the axis of the winding body is arranged on the front side of the guide rail, and the shutter curtain is wound around the winding body from the rear side in a first specification configuration, and the axis of the winding body is arranged on the rear side of the guide rail, and the shutter curtain is wound around the winding body from the front side in a second specification configuration. Two specifications are set, and a shutter device selected from these two specifications is installed. However, in such a shutter device, in any specification, the locking device attached to the shutter curtain is attached to the rear curtain surface (indoor curtain surface) from a security perspective. On the other hand, there are attempts to install such shutter devices in openings that separate the kitchen area where food is prepared and served from the counter area where chairs and tables are set up for customers to receive and eat their meals, such as in employee or student cafeterias. In these cases, the shutter case is generally installed on the kitchen side, from the perspective of visibility from the counter area where customers (users) enter and exit. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2013-227854 [Patent Document 2] Japanese Patent Publication No. 2021-173028 [Overview of the project] [Problems that the invention aims to solve]

[0004] Thus, in shutter devices for dining rooms, the rear edge of the shutter case is attached to the kitchen side of the structural member, while the locking mechanism for the shutter curtain is required to be attached to the front curtain surface facing the kitchen. Therefore, unlike the window shutters mentioned above, which have locking mechanisms attached to the rear curtain surface, it is not possible to install them in a way that allows them to be used for both the window and the dining room. This necessitates the creation of a dedicated shutter system for the dining room, but because there is little demand for such systems, productivity is poor, inevitably leading to increased costs. Consequently, there has been a demand for ways to incorporate shutter systems with different specifications using existing shutter systems, and these are the issues that the present invention aims to solve. [Means for solving the problem]

[0005] The present invention was created in view of the above circumstances and with the aim of solving these problems, and the invention of claim 1 is a shutter device for a building comprising: guide rails provided on the left and right sides of an opening; a shutter curtain that opens and closes the opening guided by the guide rails; a winding body disposed above the opening and on which the shutter curtain is wound; a shutter case that covers the winding body and whose rear edge is attached to the front of a building structure member; and a locking device attached to the rear curtain surface of the shutter curtain to lock the shutter curtain when it is closed, wherein the shutter device comprises a first specification configuration in which the axis of the winding body is positioned on the front side of the guide rail and the shutter curtain is wound onto the winding body from the rear side, and a second specification configuration in which the axis of the winding body is positioned on the rear side of the guide rail and the shutter curtain is wound onto the winding body from the front side In a shutter device for a building having two specifications, the method for changing the specifications of a shutter device for a building to a third specification by replacing the shutter curtain of the first specification with a shutter curtain of the second specification, and the method for changing the specifications of a shutter device for a second specification with a shutter curtain of the first specification, is characterized in that when replacing the shutter curtain of the first specification with a shutter curtain of the fourth specification, the curtain surface is inverted so that the back side curtain surface to which the locking device is attached in the first and second specifications becomes the front side curtain surface, and the shutter curtain is installed in this manner. The invention of claim 2 is a method for changing the specifications of a shutter device for a building according to claim 1, characterized in that the first and second specification shutter devices are provided with a lintel portion that constitutes the opening for the shutter curtain, in the first specification, when the shutter curtain is wound up in the fully open state, a stopper attached to the front side of the lintel portion abuts against the front side of the lintel portion to prevent it from being abnormally swallowed into the shutter case, in the second specification, when the shutter curtain is wound up in the fully open state, a stopper attached to the rear side of the curtain surface abuts against the rear side of the lintel portion to prevent it from being abnormally swallowed into the shutter case, in the second specification, the stopper attached to the rear side of the shutter curtain in the second specification becomes attached to the front side of the curtain surface when the curtain surface reversal process is performed to become the third specification, and abuts against the front side of the lintel portion of the first specification shutter device which has become the third specification, and the stopper attached to the front side of the shutter curtain in the first specification becomes attached to the rear side of the curtain surface when the curtain surface reversal process is performed to become the fourth specification, and abuts against the rear side of the lintel portion of the second specification shutter device which has become the fourth specification. The invention of claim 3 is a method for changing the specifications of a shutter device for a building according to claim 1 or 2, characterized in that the first and second specification shutter devices are for windows installed in window sections with openings, the third and fourth specification shutter devices are for dining rooms installed in openings separating the kitchen and counter areas of a dining room, and when changing the specifications of a window shutter device to a dining room shutter device, the curtain surface reversal step is performed so that the rear curtain surface to which the locking mechanism of the third and fourth specification shutter device is attached is positioned on the kitchen side. [Effects of the Invention]

[0006] In a shutter device where the invention of claim 1 is adopted, a first specification is set in which the axis of the winding body is positioned on the front side of the guide rail and the shutter curtain is wound onto the winding body from the rear side, and a second specification is set in which the axis of the winding body is positioned on the rear side of the guide rail and the shutter curtain is wound onto the winding body from the front side, when the specifications are changed to create shutter devices with third and fourth specifications by incorporating the shutter curtain for the first specification into the shutter device for the second specification and the shutter curtain for the second specification into the shutter device for the first specification, the shutter curtain for the first specification becomes the shutter curtain for the fourth specification and the shutter curtain for the second specification becomes the shutter curtain for the third specification, the rear side curtain surface to which the locking device is attached in the first and second specifications is attached to the front side curtain surface in a state where the curtain surface is reversed as much as possible, and as a result the third and fourth specification shutter devices can be easily set up by effectively utilizing the first and second specification materials without wasting them. By adopting the invention of claim 2, when the curtain surface reversal process is performed, the stopper attached to the second specification shutter curtain, which has become the third specification, will abut against the front side of the lintel portion of the first specification shutter device, which has become the third specification, and when the curtain surface reversal process is performed, the stopper attached to the first specification shutter curtain, which has become the fourth specification, will abut against the rear side of the lintel portion of the second specification shutter device, which has become the fourth specification, thereby ensuring that abnormal winding of the third and fourth specification shutter curtains can be reliably avoided by using the lintel portions of the first and second specifications without changing them. By adopting the invention of claim 3, the first and second specifications of the shutter device are for windows installed in window sections with openings, and when the specifications of the window shutter device are changed to the third and fourth specifications of the shutter device for dining rooms, the rear curtain surface to which the locking device is attached in the third and fourth specifications of the shutter device is positioned on the kitchen side. As a result, a highly secure shutter device for dining rooms can be reliably constructed without changing any of the individual components. [Brief explanation of the drawing]

[0007] [Figure 1] This is a side cross-sectional view of the shutter curtain of the first specification shutter device in the fully closed position. [Figure 2] This is a side cross-sectional view of the shutter curtain of the first specification shutter device in its fully open state. [Figure 3] This is a side cross-sectional view of the shutter curtain of the second specification shutter device in the fully closed position. [Figure 4] This is a side cross-sectional view of the shutter curtain of the second specification shutter device in its fully open state. [Figure 5] (A) and (B) are side cross-sectional views of the main parts and interlock joints of the first and second specifications of the shutter curtain. [Figure 6] This is a side cross-sectional view of the shutter curtain of the third specification shutter device in the fully closed position. [Figure 7] This is a side cross-sectional view of the shutter curtain of the third specification shutter device in its fully open state. [Figure 8] (A) and (B) are plan and cross-sectional views and front views of the lower end portion of the shutter curtain of the third specification. [Figure 9] This is a side cross-sectional view of the shutter curtain of the fourth specification shutter device in the fully closed position. [Figure 10] This is a side cross-sectional view of the shutter curtain of the fourth specification shutter device in its fully open state. [Figure 11] (A) and (B) are plan and cross-sectional views and front views of the lower end portion of the shutter curtain of the fourth specification. [Figure 12] (A)(A-1)(A-2) are explanatory diagrams showing the installation of the first specification shutter device, the first specification shutter device installed directly in the cafeteria, and the third specification shutter device. (B)(B-1)(B-2) are explanatory diagrams showing the installation of the second specification shutter device, the second specification shutter device installed directly in the cafeteria, and the fourth specification shutter device. [Modes for carrying out the invention]

[0008] Embodiments of the present invention will be described below with reference to the drawings. In the drawings, 1 and 2 are first and second specification shutter devices for windows, and both the first and second specification shutter devices 1 and 2 are for windows that have an opening W, and are constructed using various components and devices such as guide rails 11 and 21 provided on the left and right sides of the opening W, shutter curtains 12 and 22 that are guided by the guide rails 11 and 21 to open and close the opening 3, winding bodies 13 and 23 that are positioned above the opening and around which the shutter curtains 12 and 22 are wound, and shutter cases 14 and 24 that cover the winding bodies 13 and 23 and have their rear (rear) edge portions 14a and 24a attached to the front of the wall portion 4 which is a structural member, as is conventional, and the shutter devices 1 and 2 constructed in this way are provided with lintel portions 15 and 25 above the opening W to form a swallowing opening for swallowing the shutter curtains 12 and 22. In this specification, the terms "front" and "rear" are used, but this orientation is explained by using the shutter case 14 as a reference point, with the rear edge portion 14a, which is the side of the shutter case 14 that is attached to the body 4, as the "rear," and conversely, the front panel (front plate) 14b of the shutter case as the "front" (see Figures 1 and 2). However, this definition is for convenience only and does not limit the interpretation of the present invention.

[0009] In the first specification of the shutter device 1, the axis 13a of the winding body 13 is positioned on the front side (front side) of the guide rail 11, so that the shutter curtain 12 is wound onto the winding body 13 from the rear side. In contrast, in the second specification shutter device 2, the axis 23a of the winding body 23 is positioned on the rear side (rear side) of the guide rail 21, so that the shutter curtain 22 is wound onto the winding body 23 from the front side. One of the reasons for setting the shutter devices 1 and 2 for windows in the first and second specifications as described above is that the guide rail 11 of the first specification is arranged on the indoor side with respect to the guide rail 21 of the second specification.

[0010] Furthermore, the shutter curtain 12 provided in the shutter device 1 of the first specification is configured by being connected in series through the interlock coupling portions 12b of the slats 12a arranged in the vertical direction. The interlock coupling portion 12b is formed by connecting the upper coupling portion 12ba and the lower coupling portion 12bb formed on the slat 12a with the lower coupling portion 12bb facing the front side, and is wound around the winding body 13 in the normal winding state. Incidentally, there are two methods of winding the shutter curtain 12 around the winding body 13, namely normal winding and reverse winding. Based on the shutter curtain 12 of the first specification illustrated in FIG. 5(A), the slat 12a constituting the shutter curtain 12 includes upper and lower connecting portions 12ba and 12bb constituting the upper and lower interlock coupling portions 12b, and a slat main body portion 12aa between the upper and lower connecting portions 12ba and 12bb. Since the slat 12a is assumed to be wound around the winding body 13 in a spiral shape, the slat main body portion 12aa is approximately arc-shaped (curved shape, bow shape) in a side view bulging in either the front or rear direction with respect to the upper and lower connecting portions 12ba and 12bb, and when the inner arc surface portion of the slat 12a faces the winding body 13 side, it is defined as normal winding, and conversely, when the outer arc surface portion faces the winding body 13 side, it is defined as reverse winding. When winding the shutter curtain 12 around the winding body 13, when winding in the normal winding method, the winding follows the shape of the slat 12a, so the winding posture is regular and the winding diameter can be made thinner. On the other hand, when winding in the reverse winding method, there is a problem that the winding posture becomes uneven and the winding diameter becomes thicker, and except for special cases, reverse winding is not implemented.

[0011] In the shutter curtain 12 of the first specification configured as described above, a stopper 12e is attached to the seat plate 12g at the lowermost end of the curtain on the front curtain surface 12c, and a locking device (locking apparatus) 12f is attached to the back curtain surface 12d. Incidentally, the locking device 12f uses an existing general-purpose one, and the same configuration applies to the locking device 22f of the second specification to be described later. By tilting the operation lever 12fa, the locking rod 12fb moves in and out in the left-right direction. In the locked state where the locking rod 12fb protrudes, the latch 12fc provided at the leading edge of the locking rod 12fb engages with the latch receiver 12fd provided on the guide rail 11, restricting the upward movement of the shutter curtain 12. In the unlocked state where the locking rod 12fb is retracted, the engagement of the latch 12fc with the latch receiver 12fd is released, allowing the upward movement of the shutter curtain 12. The stopper 12e on the shutter device 1 side of the first specification comes into contact with the front side portion (outer scabbard portion) 15a of the scabbard portion 15 when the shutter curtain 12 is wound around the winding body 13 in the fully open state, thereby restricting abnormal swallowing of the shutter curtain 12 into the shutter case 14 (abnormal winding around the winding body 13). Incidentally, in the present embodiment, the front side portion (outer scabbard portion) 15a of the scabbard portion 15 with which the stopper 12e comes into contact is constituted by the lower face plate of the shutter case 14.

[0012] On the other hand, the shutter curtain 22 provided in the shutter device 2 of the second specification is configured by being connected in series through the interlock coupling portion 22b of the slats 22a arranged in the vertical direction. The interlock coupling portion 22b is formed by connecting the upper coupling portion 22ba and the lower coupling portion 22bb formed on the slat 22a with the lower coupling portion 22bb facing the back side, and is wound around the winding body 23 in the normal winding direction.

[0013] In this second specification of the shutter curtain 22, a stopper 22e and a locking device 22f are attached to the base plate 22g of the rear curtain surface 22d. Incidentally, as mentioned above, the locking device 22f is also equipped with an operating lever 22fa, a locking rod 22fb, a latch 22fc, and a latch receiver 22fd, similar to the locking device 12f of the first specification. Furthermore, the stopper 22e on the shutter device 2 side of the second specification is configured to come into contact with the rear side portion (inner lining portion) 25a of the lining portion 25 when the shutter curtain 22 is fully wound onto the winding body 23, thereby preventing the shutter curtain 22 from being abnormally swallowed into the shutter case 24 (abnormal winding onto the winding body 23).

[0014] When modifying the shutter devices 1 and 2 of the first and second specifications for windows, configured in this manner, to a specification for a cafeteria such as an employee cafeteria or student cafeteria, to partition the opening F at the serving counter Z between the kitchen room (management room) X where cooking and serving work is performed, and the counter room Y, which is the user room where customers such as employees and students receive their served meals and eat at tables, if the shutter devices 1 and 2 of the first and second specifications are installed with the shutter cases 14 and 24 on the kitchen room X side instead of the counter room Y side, and without changing the shutter curtains 12 and 22 as described later, in order to improve visibility from the counter room Y side, as shown in Figures 12(A-1) and (B-1), the locking devices 12f and 22f are located on the counter room Y side, allowing customers on the counter room Y side to freely operate the locks, resulting in a lack of security.

[0015] Therefore, if the shutter curtains 12 and 22 of the first and second specifications are simply reversed and attached to the shutter devices 1 and 2 of the first and second specifications, not only will each shutter curtain 12 and 22 be wound in the opposite direction to the winding bodies 13 and 23, but the stoppers 12e and 22e will be positioned in opposite directions, and when the shutter curtains 12 and 22 are fully open, there will be no lintel portions 15 and 25 for the stoppers 12e and 22e to contact, which is undesirable. Taking these factors into consideration, the shutter curtain 22 used in the second specification will be attached to the shutter device 1 of the first specification to create the shutter device 30 of the third specification, and the shutter curtain 12 used in the first specification will be attached to the shutter device 2 of the second specification to create the shutter device 40 of the fourth specification. In other words, when changing the specifications of the first specification shutter device 1 to the third specification shutter device 30, the rear edge portion 34a(14a) of the shutter case 34(14) of the third specification will be attached to the kitchen X side, and when changing the specifications of the second specification shutter device 2 to the fourth specification shutter device 40, the rear edge portion 44a(24a) of the shutter case 44(24) of the fourth specification will be attached to the kitchen X side. Incidentally, in the third specification and fourth specification shutter devices 30 and 40, the components and devices such as the winding body (including the shafts 33a and 43a) 33 and 43 and the lintel portions 35 and 45 will not be changed from those of the first and second specification shutter devices 1 and 2. When such specification changes are made, the first specification shutter device 1 is modified to become the third specification shutter device 30, with the first specification shutter curtain 12 being replaced with the second specification shutter curtain 22, and the second specification shutter device 2 is modified to become the fourth specification shutter device 40, with the second specification shutter curtain 22 being replaced with the first specification shutter curtain 12.

[0016] When making this specification change, in both the third and fourth specifications, it is required to improve security by placing the locking devices 12f and 22f on the kitchen room X side. Therefore, as a method for changing the shutter devices 1 and 2 of the first and second specifications to the shutter devices 30 and 40 of the third and fourth specifications, the process includes a curtain surface reversal step in which the front curtain surfaces 12c and 22c of the second and first specifications, which will be changed to shutter curtains 32 and 42 of the third and fourth specifications, are reversed so that they become the front curtain surfaces 32c and 42c when they are made into the third and fourth specifications. As a result of this curtain surface reversal process, the first specification shutter curtain 12 is changed to the fourth specification shutter curtain 42. The fourth specification shutter curtain 42(12), including the slats 42a(12a) connected by the interlock coupling part 42b(12b) and the bottom plate 42g(12g) at the lowest end of the shutter curtain 42(12), is in a forward-winding state relative to the winding body 43(23) and is guided up and down on the guide rail 41(21). On the other hand, when the curtain surface reversal process is performed, the second specification shutter curtain 22 is changed to the third specification shutter curtain 32. The third specification shutter curtain 32(22), including the slats 32a(22a) connected by the interlock coupling part 32b(22b) and the bottom plate 32g(22g) at the lowest end of the shutter curtain 32(22), is in a forward-winding state relative to the winding body 33(13) and is guided up and down on the guide rail 31(11).

[0017] Furthermore, when the curtain surface reversal process is performed, the stopper 12e attached to the front curtain surface 12c side and the locking device 12f attached to the rear curtain surface 12d side of the first specification shutter curtain 12 become, due to the specification change from the first specification to the fourth specification attached to the second specification shutter device 2, the locking device 42f (12f) attached to the front curtain surface 42c and the stopper 42e (12e) attached to the rear curtain surface 42d. As a result, in the fourth specification shutter device 40, the stopper 42e (12e) comes into contact with the rear side portion 25a (45a) of the lintel portion 25 (45) that the stopper 22e contacts in the second specification shutter device 2, and the side that the stopper 42e contacts remains the same as in the second specification shutter device 2. Furthermore, the locking device 12f, which was attached to the rear curtain surface 12d of the first specification shutter curtain 12, was moved to the front curtain surface 42c when the specification was changed to the fourth specification shutter curtain 42. As a result, the operating lever 42fa, locking rod 42fb, and latch 42fc that constitute the locking device 42f are attached to the front curtain surface 42c, and the latch 42fc engages with the latch receiver 42fd provided on the guide rail 41, allowing locking and unlocking operations from the front side, which is the kitchen X side.

[0018] In contrast, the locking device 22f and stopper 22e attached to the rear curtain surface 22d side in the second specification shutter curtain 22 become the locking device 32f(22f) and stopper 32e(22e) attached to the front curtain surface 32c due to the specification change from the second specification to the third specification. As a result, in the third specification shutter device 30, the stopper 32e(22e) comes into contact with the front side portion 15a(35a) of the lintel portion 15(35) that the stopper 12e contacts in the first specification shutter device 1, and the side that the stopper 32e(22e) contacts remains the same as in the first specification shutter device 1. Furthermore, in the second specification shutter curtain 22, the locking device 22f and stopper 22e, which are attached to the rear curtain surface 22d, are changed to the third specification shutter curtain 32 by being attached to the front curtain surface 32c instead of the rear curtain surface 32d. As a result, the operating lever 32fa, locking rod 32fb, and latch 32fc that constitute the locking device 32f are attached to the front curtain surface 32c, and the latch 32fc engages with the latch receiver 32fd provided on the guide rail 31, allowing locking and unlocking operations from the front side, which is the kitchen X side. Incidentally, when deciding whether to adopt the third or fourth specification shutter device 30 or 40 in the dining hall, the general choice is to either widen the kitchen X side or widen the counter room Y side for the serving table Z.

[0019] In this embodiment configured as described, the window shutter devices 1 and 2 are set as follows: a first specification in which the axis 13a of the winding body 13 is positioned on the front side of the guide rail 11 and the shutter curtain 12 is wound around the winding body 13 from the rear side; and a second specification in which the axis 23a of the winding body 23 is positioned on the rear side of the guide rail 21 and the shutter curtain 22 is wound around the winding body 23 from the front side. The shutter curtain 12 for the first specification is incorporated into the second specification shutter device 2, and the shutter curtain 22 for the second specification is incorporated into the first specification shutter device 1. When changing the specifications to configure the shutter devices 30 and 40 according to the third and fourth specifications, the shutter curtain 12 of the first specification is used as the shutter curtain 42 of the fourth specification, and the shutter curtain 22 for the second specification is used as the shutter curtain 32 of the third specification. In this configuration, the rear curtain surfaces 12d and 22d, to which the locking devices 12f and 22f are attached in the first and second specifications, are installed as the front curtain surfaces 42c and 32c with the curtain surfaces reversed as much as possible. As a result, the shutter devices 30 and 40 according to the third and fourth specifications can be easily configured by effectively utilizing the first and second specifications without wasting any of them.

[0020] In this case, the stopper 32e (22e) attached to the second specification shutter curtain 32 (22), which has become the third specification after the curtain surface reversal process is performed, will come into contact with the front side portion 35a (15a) of the lintel portion 35 (15) of the first specification shutter device 1 (30), which has become the third specification. The stopper 42e (12e) attached to the first specification shutter curtain 42 (12), which has become the fourth specification after the curtain surface reversal process is performed, will come into contact with the rear side portion 45a (25a) of the lintel portion 45 (25) of the second specification shutter device 40 (2), which has become the fourth specification. Thus, abnormal winding of the third and fourth specification shutter curtains 32 and 42 can be reliably avoided by using the first and second specification lintel portions 15 and 25 without making any changes.

[0021] Furthermore, in a system where specifications can be changed in this way, the first and second specification shutter devices 1 and 2 before the specification change are for windows installed in a window section with an opening W. When the window shutter devices 1 and 2 are changed to the third and fourth specification shutter devices 30 and 40 for dining rooms, the front curtain surfaces 32c and 42c to which the locking devices 32f and 42f are attached are positioned on the kitchen X side. As a result, a highly secure shutter device for dining rooms can be reliably created without changing any of the individual components.

[0022] It should be noted that the present invention is not limited to the above-described embodiment. In this embodiment, we have described a case in which a shutter device installed on an opening such as a window is modified for use in a dining room. However, this modification is not limited to use in a dining room partitioned into a kitchen X and a counter Y. It can also be used in cases such as modifying a shutter device to partition a restricted-access administrator room (administrative room) from a user room (general room) that is open to the public without entry restrictions. [Industrial applicability]

[0023] This invention can be used as a method for modifying the specifications of shutter devices for buildings, such as office buildings, houses, and garages, which open and close openings in such buildings. [Explanation of Symbols]

[0024] 1. First specification shutter device 11 Guide rails 12 Shutter Curtains 12c Front side curtain surface 12d Rear side curtain surface 12e stopper 12f Locking device 13 Winding body 13a Axis center 14 Shutter Case 14a Rear edge 15 Magusa section 15a Front side 2. Second specification shutter device 21 Guide rails 22 Shutter Curtain 22c Front side curtain surface 22d Rear side curtain surface 22e Stopper 22f Locking device 23 Winding body 23a Axial center 24 Shutter Case 24a Back edge 25 Magusa Department 25a Rear side 30. Third-spec shutter device 32 Shutter Curtains 32c Front side curtain surface 32d Rear side curtain surface 32e stopper 32f Locking device 33 Winding body 33a Axial center 34 Shutter Case 34a Rear edge 35 Magusa Department 35a Front side 40. Shutter device of the fourth specification 42 Shutter Curtain 42c Front side curtain surface 42d Rear side curtain surface 42e stopper 42f Locking device 43 Winding body 43a Axial center 44 Shutter Case 44a Back side edge 45 Magusa section 45a Rear side W window opening F Opening for dining room X Kitchen room Y Counter Room Z serving table

Claims

1. A shutter device for a building comprising: guide rails provided on the left and right sides of an opening; a shutter curtain that opens and closes the opening guided by the guide rails; a winding body positioned above the opening on which the shutter curtain is wound; a shutter case that covers the winding body and whose rear edge is attached to the front of a structural member; and a locking device attached to the rear curtain surface of the shutter curtain to lock the shutter curtain when it is closed, The shutter device has a first specification configuration in which the axis of the winding body is positioned on the front side of the guide rail, and the shutter curtain is wound onto the winding body from the rear side. In the second configuration, the axis of the winding body is positioned behind the guide rail, and the shutter curtain is wound onto the winding body from the front. In a shutter device for a building having the following two specifications, The shutter device of specification 1 is modified by replacing the shutter curtain of specification 1 with a shutter curtain of specification 2 to create a shutter device of specification 3. When modifying the specifications of the second-spec shutter device to a fourth-spec shutter device by replacing the shutter curtain in the second-spec device with a shutter curtain from the first-spec device, A method for changing the specifications of a shutter device for a building, characterized in that when changing a shutter curtain of the first specification to a shutter curtain of the fourth specification, and a shutter curtain for the second specification to a shutter curtain of the third specification, the method includes a curtain surface reversal step in which the curtain surface is reversed so that the rear curtain surface to which a locking device is attached in the first and second specifications becomes the front curtain surface, and the shutter curtain is installed.

2. The first and second specification shutter devices are provided with a lintel section that forms the opening for the shutter curtain to be fed in. In the first specification, when the shutter curtain is fully rolled up, a stopper attached to the front curtain surface abuts against the front side of the lintel, preventing it from being abnormally swallowed into the shutter case. The second specification shutter curtain, when fully rolled up, has a stopper attached to the rear curtain surface that contacts the rear side of the lintel, preventing it from being abnormally swallowed into the shutter case. In the second specification, the stopper attached to the rear curtain surface of the shutter curtain becomes attached to the front curtain surface when the curtain surface reversal process is performed and it becomes the third specification, and contacts the front side of the lintel portion of the shutter device of the first specification which has become the third specification. A method for changing the specifications of a shutter device for a building according to claim 1, characterized in that a stopper attached to the front curtain surface of the shutter curtain in the first specification becomes attached to the rear curtain surface when the curtain surface reversal process is performed to become the fourth specification, and contacts the rear side of the lintel portion of the shutter device of the second specification which has become the fourth specification.

3. The first and second type shutter devices are for windows that have an opening, while the third and fourth type shutter devices are for dining rooms that are installed in openings separating the kitchen and counter areas of a dining room. When changing the specifications of the window shutter system to a shutter system for the dining room, A method for changing the specifications of a shutter device for a building according to claim 1 or 2, characterized in that the curtain surface reversal step is performed so that the rear curtain surface to which the locking device of the third and fourth specifications of the shutter device is attached is positioned on the kitchen side.

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