JP2003221984A - Movable type guide rail in shutter for building and its moving method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To constitute the opening width of a frontage so as to be able to be freely set regardless of an opening height in a shutter device configured so that a guide rail is rocked and its postures are changed to a horizontal posture housed in a ceiling housing section and a suspended posture suspended from a ceiling with the open-close operation of a shutter curtain. <P>SOLUTION: The guide rail 4 is composed of a guide piece 5 and an extended rail 6 installed through a sliding rail 8 so as to be projected and retracted and moved in the rail longitudinal direction from the front end section of the guide piece 5. The guide rail 4 is constituted so that its posture is changed in an extended posture after the extended rail 6 in a contracted posture is rocked downwards in the closing operation of the shutter curtain 1 and so that its posture is rocked upwards after the extended rail 6 in the extended posture its changed in the contracted posture in the opening operation of the shutter curtain 1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of a movable guide rail structure in a building shutter provided in an opening of a building such as a building or factory.

[0002]

2. Description of the Related Art In general, at entrances and exits of buildings and factories, large rooms, underground passages, etc., fire and smoke prevention sections are set to prevent burning and prevent the spread of damage in order to deal with abnormalities such as fire. It can be measured. As such, it is proposed to build a fireproof shutter for buildings, but when the frontage is wide, it is necessary to install a plurality of shutter curtains in parallel instead of a series. In this case, the center pillar (guide rail) is required, but if this middle pillar is fixed, there is a problem that the middle pillar becomes an obstacle in normal times. Therefore, the upper ends of the guide rails are pivotally supported on the body ceiling so that the shutter curtain can be closed by swinging between a horizontal position that is stored in the ceiling and a hanging position that hangs down the opening. A guide rail that transforms into a combined hanging posture is configured to guide the closing operation of the shutter curtain, so that the center pillar does not get in the way when the shutter curtain is opened, and the shutter curtain can be closed quickly. It has been proposed that it can be done.

[0003]

However, in the case where the guide rail is constructed in the swing deformation type as described above, the opening width of the opening is set by the rail length of the guide rail, that is, the opening height of the opening. Therefore, if the pair of guide rails that guide the left and right of the shutter curtain are both swinging and deformable, the frontage width of the opening will be twice the rail length of the guide rail. The higher the frontage height, the longer the rail length of the guide rail and the wider the frontage width. By the way, if the frontage width is wide, the shutter curtain width must be widened accordingly, but when the shutter curtain width is widened, there is a limit because the shutter curtain bends, and even if it does not exceed the limit. However, the strength of the shutter curtain itself must be increased, and the load of the shutter curtain thus strengthened is heavy, and the winding drum for winding this must also be strengthened to prevent bending. There is a problem that it must be. On the other hand, as disclosed in Japanese Patent Laid-Open No. 3-297478, a guide rail having a retractable structure has been proposed, whereby the rail length of the guide rail can be reduced in the horizontal posture. The width of the frontage can be reduced while increasing the width of the frontage. However, this one has a structure in which the guide rail is made to hang down in advance before the closing operation of the shutter curtain, and then the guide rail is extended. Since each mechanism for expanding and contracting the rail is required, there is a problem that the structure becomes complicated, and the shutter curtain closes after the guide rail is set in the hanging posture. Therefore, there is also a problem that the closing of the shutter curtain is delayed and speediness is impaired, and there are problems to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances in order to solve these problems, and a shutter curtain housed in a ceiling housing unit and a ceiling. In a building shutter having a movable guide rail whose base end is pivotally supported so as to swing from a horizontal posture to a drooping posture in which the guide rail is stored in a shutter curtain. The shutter curtain is closed at the tip of the guide rail when it is configured to swing and change with the opening and closing operation.
An extension rail is provided that is linked to the opening operation and appears and disappears. By this, the width of the opening
It can be freely set without restricting the frontage height, and
The guide rail can be transformed according to the operation of the shutter curtain. In this configuration, the extension rail of the present invention is movably connected to the guide rail in the rail length direction, and is configured to appear and disappear following the closing and opening operations of the shutter curtain in the hanging posture of the guide rail. Can be Further, in this one, the extension rail of the present invention is connected to the guide rail through a slide rail, and the extension rail projects after the guide rail is transformed into a drooping posture in connection with the closing operation of the shutter curtain, and the shutter curtain The guide rail may be configured to be transformed into a horizontal posture after the extension rail is immersed in connection with the opening operation of. Further, in this, the extension rail of the present invention is
The engagement member provided on the extension rail can be configured to follow the shutter curtain by contacting the seat plate. Furthermore, in the guide rail of the present invention, a seat plate contact member for contacting the seat plate at the lowermost end of the shutter curtain from above and following the operation of the seat plate, and a base end portion swing. Supported freely,
When the guide rail is provided with an actuating body for guiding the swing of the guide rail by abutting the tip of the shutter rail against the seat plate of the shutter curtain that opens before the seat plate abutting member, The rail may be provided with a swing restricting member that restricts the swinging direction of the actuating body, whereby the shutter curtain can be smoothly opened and closed. Further, in this, the actuating body of the present invention may have a base end portion provided in the vicinity of the seat plate contact member, and the swing restricting member of the actuating member may be constituted by the seat plate contact member. Therefore, the members can be commonly used. Further, in this, in the seat plate of the present invention, a traveling surface on which the tip of the actuating body movably contacts and a stopper piece are formed at the end of the traveling surface, and the traveling surface is formed. Is provided with a guide member for guiding the tip of the actuating body toward the stopper piece side when the guide rail makes a shocking upward swing due to the contact between the actuating body and the seat plate in the process of opening the shutter curtain. Even if the guide rail swings upward, the swinging direction of the actuating body can be forced to face the stopper piece side. Furthermore, in this structure, the guide member of the present invention is formed along the movement locus of the tip of the actuation body due to the shocking upward swing of the guide rail, and is configured to suppress the movement of the actuation body. Can be. Further, in this, the guide member of the present invention may be formed on an inclined surface that is lower toward the stopper piece side. Further, the present invention provides a shutter curtain housed in a ceiling housing unit, and a movable guide whose base end is pivotally supported so as to swing from a horizontal posture housed in the ceiling to a hanging posture hanging from the ceiling. In the architectural shutter provided with a rail, the guide rail,
When the shutter curtain is configured to swing and change as the shutter curtain opens and closes, an extension rail is provided at the tip of the guide rail that moves in and out in association with the closing and opening of the shutter curtain. In the operation, the guide rail swings from the horizontal posture to the drooping posture, and then the extension rail protrudes.In the opening operation of the shutter curtain, the extension rail immerses into the drooping guide rail, and then the horizontal posture. It is configured to swing and transform into. As a result, the guide rail can be transformed in connection with the opening / closing operation of the shutter curtain, and the opening width of the opening can be set without being restricted by the opening height.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a first embodiment of the present invention will be described with reference to the drawings shown in FIGS. In the drawings, reference numeral 1 denotes a shutter curtain of a fire protection shutter for buildings arranged in parallel in a large opening, and each shutter curtain 1 is wound around a winding shaft 2 supported on the ceiling side. The shutter curtain 1 has a fully closed posture in which the opening and closing are performed by winding and unwinding the winding shaft 2 as the winding shaft 2 rotates in the forward and reverse directions based on forward and reverse driving of a switch 3 with a brake. It is set so that it can be transformed into a fully open position that is stored in the section. Incidentally, these shutter curtains 1 are configured to open and close based on the operation of an operation switch (not shown). However, when a fire or the like occurs in the open state of the shutter curtain 1, the abnormality detection means detects an abnormality. Accordingly, the brake is released so that the shutter curtain 1 is closed by its own weight.

Reference numeral 4 denotes a guide rail for guiding each shutter curtain 1. These guide rails 4 are arranged at a plurality of positions corresponding to both side portions of each shutter curtain 1, and the guide rails 4 are provided in accordance with the present invention. Is being implemented. Each of the guide rails 4 is configured to include a pair of guide pieces 5 facing each other in the front-rear direction, and an extension rail 6 for extending and retracting the entire length of the guide rail 4 by protruding and retracting from the tip end portion of the guide piece 5. The shutter curtain 1 is set to guide the movement of the shutter curtain 1 by penetrating between the facing portions of the guide pieces 5. On the other hand, the shutter curtain 1 is formed by connecting a plurality of slats 1a in the vertical direction and a seat plate 7 is connected to the lowermost end of the shutter curtain 1. The front-rear thickness is formed thicker than the front-back thickness of the slat 1a portion.

In order to form the movable guide rail, the guide rail 4 is oscillatably supported by the support shaft 4a penetrating the base end portions (upper end portions) of the pair of guide pieces 5 toward the ceiling body. There is. The guide piece 5 of the guide rail 4 swings around the support shaft 4a as a fulcrum, and the tip end (lower end portion) is vertically aligned with the base end portion and is housed in the ceiling portion in a substantially horizontal direction. It is configured to swing and transform into a horizontal posture and a drooping posture in which the tip (lower end) naturally hangs.

The pair of front and rear guide pieces 5 are formed in a line-symmetrical relationship with each other, but each guide piece 5 will be described with reference to the guide rail 4 in the drooping posture.
Is a tubular main body 5a that is long in the left-right direction, and the main body 5a
And a left-right inner piece 5b that is integrally provided on the left-right inner piece and is formed long toward the opposing guide piece 5 side (front-rear direction inner side). In the guide rail 4, there is a large gap S through which the seat plate 7 portion of the shutter curtain 1 can penetrate between the pair of guide piece main body portions 5a, and between the tip end portions of the left and right inner side portion 5b. The dimensions are set so that there is a small gap S'through which the slat 1a portion of the shutter curtain 1 can penetrate.

The extension rail 6 extends and retracts downward from the tip of the guide piece 5 to extend and contract the entire length of the guide rail 4. The extension rail 6 extends in the front-rear direction of the guide piece body 5a. An extended outer piece 6a located at a predetermined distance from the outer side piece 5c and an inner piece 5 in the left-right direction.
Extension inner piece 6b located outside b at a predetermined interval
Are integrally formed by bending, and are set so that a gap S ′ is formed between the two facing each other in the front-rear direction.
Then, between the guide piece 5 and the extension rail 6, there is a slide which is located between the front and rear direction outer side pieces 5c and 6a and the left and right direction inner side pieces 5b and 6b and slides in the rail length direction. The rail 8 is interposed, and the extension rail 6 moves (extends) so as to project from the tip end portion of the guide piece 5 and extends in a long direction from the lower end edge of the guide piece 5, and the extension rail 6 with respect to the guide piece 5. It is set so as to be moved (reduced) so as to be immersed, and to be transformed into a reduced posture in which it slightly projects from the lower end edge of the guide piece 5. Then, as will be described later, the extension rail 6 is moved to the extended position by projecting against the guide piece 5 by its own weight after the guide rail 4 is in the hanging posture in the process of closing and opening the shutter curtain 1. On the other hand, since the guide rail 4 is configured to swing and transform into a horizontal posture after the guide rail 5 has been retracted to a retracted posture in advance, the entire length of the guide rail 4 is in a drooping posture. It becomes long and becomes short in a horizontal posture, and as a result, the width W of the frontage is smaller than the height H of the frontage of the large opening, that is, the width W of the frontage is smaller than twice the height H of the frontage (W <2H). It is configured so that it can be set.

Further, the left-right inner piece 5b at the lower end of each of the guide pieces 5 is formed as a notch 5d in which a portion projecting inward in the front-rear direction from the main body 5a is cut out.
The distance between the facing guide pieces 5 facing each other in the front-rear direction is set to be substantially a space S, and the seat plate 7 is guided to penetrate below the notch portion 5d. When the extension rail 6 is in the extended posture, the cutout portion 5d is covered by the left and right inner side pieces 6b of the extension rail 6, and a small gap S ′ is set between them. . Further, at the lower end of the inner side surface 6b in the left-right direction which constitutes the extension rail 6, a cutout portion similar to the cutout portion 5d at the lower end portion of the guide piece 5 is formed so that a large space S is provided between the extension rails 6 facing each other. The notch 6c is formed, and when the extension rail 6 is in the contracted posture, the guide piece notch 5d and the extension rail notch 6c have a positional relationship in which the vertical direction is aligned.

On the other hand, the inner end portion 5e in the front-rear direction, which is the lower end portion of the guide piece 5 and faces the cutout portion 5d forming portion.
Is provided with an operating arm 9 corresponding to the operating body of the present invention. The operating arm 9 is formed into a long plate-like body, and the upper and lower ends thereof are bent inward in the left-right direction so that the upper bent portion 9a (base end portion) of the operating arm 9 is connected to the guide piece. By pivotally supporting the inner surface 5e in the front-rear direction via a support shaft 9b, the lower end (tip end) of the support shaft 9b is set to swing in the left-right direction.

Further, the first traveling roller 10 is rotatably supported by the support shaft 9b of the operating arm 9, and the lower end portion of the operating arm 9 serving as the lower bent portion 9c is
The second traveling roller 11 is rotatably provided via the support shaft 11a, and the rollers 10 and 11 are arranged such that the rotation directions thereof are the left and right directions. A support roller 12 for traveling the seat plate 7 as a seat plate contact member of the present invention is rotatably supported on the guide piece front-rear direction inner side portion 5e. The upper end of the operating arm 9 is disposed near the upper bending portion 9a of the operating arm 9 and inward of the operating arm 9 in the left-right direction. Is set so as to regulate the swinging inward in the left-right direction when the swinging displacement is made inwardly or outwardly in the left-right direction, whereby the swing-limiting member of the operating arm 9 is also used. Is configured to. The operating arm 9
In the state in which the second traveling roller support shaft 11a on the lower end side with respect to the upper end support shaft 9b in the left-right direction, the second traveling roller support shaft 11a is positioned outward in the left-right direction. It is set so that the rocking of the actuating arm 9 outward in the left-right direction is controlled more reliably.

Further, the extension rail 6 has a notch 6
A guide roller 13 corresponding to the engaging member of the present invention is provided on the upper side of c, and the guide roller 13 is disposed above the seat plate 7 so as to face each other. Then, as will be described later, along with the opening / closing operation of the seat plate 7 (the opening / closing operation of the shutter curtain 1 and the up / down operation), the seat plate 7 is moved.
The extension rail 6 is set to move in and out based on the contact between the extension rail 6 and the guide roller 13. Further, the closing body 14 is hinged to the extension rail notch portion 6c so as to be openable and closable, so that when the closing body 14 is in the closed posture, a gap H'having a small opposing distance is formed. The shutter curtain 1 is configured to automatically assume an open posture as the seat plate 7 penetrates in the process of opening and closing the shutter curtain 1. In the fully closed posture of the shutter curtain 1, the extension rail notch portion 6c is closed. The posture is taken into consideration to enhance the smokeproof performance.

Incidentally, the guide rails 4 provided adjacent to the opening of each of the guide rails 4 have concavo-convex portions bent and formed on the opposite lateral outer surfaces thereof, as shown in FIG. When the guide rail 4 is in the hanging posture, these uneven portions are configured to be in a state of being summed with each other, and it is considered that the smoke prevention performance between adjacent guide rails 4 is improved by this. ing. Reference numeral 15 is a locking tool provided at the lower end of each extension rail 6 for engaging the skeleton to fix the guide rail 4, and is automatically locked after the guide rail 4 is transformed into the drooping posture. The shutter curtain 1 is set to be opened after being unlocked from the locked state.

On the other hand, the seat plate 7 is located at the lowermost end of the shutter curtain 1 and is connected to the bottom plate portion 7a.
A connecting piece 7b standing upright from the center of the bottom piece 7a in the front-rear direction and connected to the shutter curtain slat 1a located on the upper side, and front and rear pieces 7c and 7d standing upright from the front and rear edges of the bottom piece 7a. A pair of running rails 7e formed of the upper surface of the bottom piece 7a are formed in front of and behind the connecting piece 7b. The front and rear traveling rails 7e are respectively moved up and down by the first and second traveling rollers 10 and 11 disposed on the pair of front and rear guide pieces 5, the support roller 12, and the guide roller 13 of the extension rail 6, respectively. These rollers 10, 11, 12, 13 are opposed to each other in the direction of the traveling rail 7 in the process of opening and closing the shutter curtain 1, as will be described later.
It is set so that it can run left and right in a state where it can move in and out freely. Further, on both left and right ends of the seat plate 7, the traveling rail 7
A first stopper piece 7f is formed in a state orthogonal to e, and at the inner position of the first stopper piece 7f, the lower ends of a pair of front and rear operating arms 9 that hang naturally with respect to the guide rail 4 in the hanging posture. It is set so that the second traveling rollers 11 of the part face each other. Incidentally, 7g is a fixed piece provided on the lower surface of the seat plate bottom piece 7a, and functions as a spacer.

Next, the operation of the guide rails 4 associated with the opening / closing operation of the shutter curtain 1 will be described. The guide rails 4 are provided at the left and right sides of the shutter curtain, and four guide pieces 5 and extension rails are provided for convenience. 6 operates in the same manner, and therefore, for the sake of simplification of description, the description will be given in relation to the operation of one guide piece 5 accompanying the opening / closing operation of the shutter curtain 1 (seat plate 7). When the shutter curtain 1 is in the open posture (fully opened state), the guide rail 4 is in a state in which the extension rail 6 is in the retracted posture and is retracted into the guide piece 5, and the entire length of the guide rail 4 is a large opening. The length is set to approximately half the width W of the frontage. Then, in the closed posture of the shutter curtain 1, as shown in FIG. 8 (A), the support rail 12 of the guide rail 4 and the first and second traveling are provided on the traveling rail 7e of the seat plate 7 located in the lintel portion. Rollers 10, 11
Are abutted and supported in parallel with each other, whereby the guide rail 4 is supported by the seat plate 7 so as to be restricted by downward movement, and is kept in a horizontal posture while being housed in the ceiling. . At this time, the actuating arm 9 is in a lying posture in which the front end side on which the second traveling roller 11 is supported is laterally outward and the base end side on which the first traveling roller 10 is supported is laterally inward. . On the other hand, the guide roller 13 of the extension rail 6 is restricted to move toward the extension side by contacting not with the traveling rail 7e but with the second stopper piece 7h provided orthogonally so as to cross the traveling rail 7e.

When the shutter curtain 1 is in the fully open state, it is operated by an operation switch (not shown), or
When an abnormality is detected from the fire alarm or the like, the brake device of the opening / closing device 3 is released, the closing operation of the shutter curtain 1 is started, and the seat plate 7 at the lowermost end of the shutter curtain 1 is started.
Is moved downward, the guide rail 4 (the guide piece 5 and the extension rail 6) starts to swing downward by its own weight in a state in which the seat plate 7 regulates the downward swing due to the downward movement. In this way, when the guide rail 4 is swung downward, the first traveling roller 10 of the operating arm 9 separates from the seat plate traveling rail 7e, as shown in FIG. Guide rail 4
Are set to receive the support of the seat plate 7 (downward swing restriction) only through the support roller 12. At this time, the seat plate 7 penetrates through the tip end portion of the guide piece 5, that is, the cutout portions 5d and 6c where the guide piece 5 and the extension rail 6 are stacked, but the seat plate 7 is in the contracted posture. It is set so as to penetrate through the six closed bodies 14 while automatically opening. Then, as the guide rail 4 swings downward, the first and second traveling rollers 10, 11 of the operating arm 9,
The support roller 12 travels outward on the traveling rail 7e in the left-right direction, while the guide roller 1 of the extension rail 6 travels.
3, the contact with the second stopper piece 7h is released, and the extension rail 6 is in the free state in which the movement restriction is released. In this free state, the extension rail 6 swinging downward together with the guide piece 5 slightly moves to the front end side due to its own weight, but as shown in FIG. 13 is set so as to contact the traveling rail 7e, and thereafter, the extension rail 6 swings downward while being restricted by the movement of the seat plate 7, and thus the extension rail 6 is substantially maintained in the contracted posture. It is set to oscillate downward in the state of being turned on.

When the guide rail 4 is further swung downward from the above state, as shown in FIG. 9 (A), the second traveling roller 11 at the tip of the operating arm 9 is gradually moved to the left and right ends of the seat plate 7. Although approaching, the extension rail 6 is maintained in the substantially reduced posture in this state as described above. And in FIG.
As shown in (B), when the second traveling roller 11 reaches the corner portion between the seat plate first stopper piece 7f and the traveling rail 7e, the support roller 12 is moved from the traveling rail 7e in time with this. The guide rails 4 are set so as to be separated from each other in this state.
The seat plate 7 is supported via the.

When the seat plate 7 is further moved downward in the state where the support of the guide rail 4 by the seat plate 7 is changed from the support arm 12 through the actuating arm 9 as described above, FIG. As shown in FIG.
The second traveling roller 11 side located at the corner is gradually displaced downward so as to swing to a standing posture. Further, in this state, the seat plate 7 moves downward at a position lower than the guide piece notch portion 5d, and the extension rail 6 starts to move downward by its own weight in accordance with the downward movement of the seat plate 7. The guide piece 5 is set to gradually project from the lower end portion thereof to extend the entire length of the guide rail 4. Then, as shown in FIG. 10 (B), when the guide rail 4 is transformed into the hanging posture and the seat plate 7 is further moved downward from the state in which the operating arm 9 is in the standing posture, the first arm of the operating arm 9 is moved downward. The two traveling rollers 11 and the traveling rail 7e are separated from each other, and the guide piece 5 is no longer supported by the seat plate 7 via the operating arm 9, so that both the operating arm 9 and the guide piece 5 are naturally suspended. Is set to. On the other hand, the extension rail 6 is still supported by the seat plate 7 via the guide roller 13, and thereafter, the seat plate 7 is set to move downward while supporting only the extension rail 6.

As described above, when the seat plate 7 supports only the extension rails 6 and there is further downward movement of the seat plate 7, as shown in FIG.
As shown in FIG. 1 (A), only the extension rail 6 is moved (downward, projecting operation) to the extended posture side following (joining) the seat plate 7, and the shutter curtain 1 is almost fully closed. In this state, the guide roller 13 and the traveling rail 7e are separated from each other.
Is set to transform into the extended posture. By the way, the extension rail 6 engages with the guide piece 5 (not shown) as the extension movement (downward movement) is performed with respect to the guide piece 5, and further extension movement is restricted. Is set to. Then, from this state, only the shutter curtain 1 is moved downward, and as shown in FIGS. 11B and 11C, the shutter curtain 1 is set to the fully closed posture. Shutter curtain 1
The guide rail 4 is set so as to be set over the entire length H of the frontage of the large opening substantially at the same time as the closing. As a result, the guide rail 4 has the extension rail 6 in the contracted posture in the horizontal posture, and the entire length of the guide rail 4 is short, which is approximately half the width W of the large opening. In the drooping posture, the extension rail 6 is in an extended posture, and the entire length of the guide rail 4 is long substantially corresponding to the frontage height H of the large opening. The width of the frontage can be set small. When the shutter curtain 1 is in the fully closed posture, the seat plate 7 is positioned below the closing body 14 in a state of closely facing the floor surface, and by moving to the lower position, the closing body is closed. 14 are set to be automatically closed.

Thus, when the shutter curtain 1 is in the fully closed state, the operating arm 9 of the guide rail 4 is in a standing posture in a natural hanging state. The traveling roller 11 and the inside portion of the seat plate first stopper piece 6f are in a positional relationship of facing each other in the vertical direction.

On the other hand, in the fully closed state, when the opening operation of the shutter curtain 1 is started based on the operation of an operation switch or the like (not shown), the seat plate 7 automatically closes the closing body 14 of the extension rail 6. When the guide roller 13 comes into contact with the traveling rail 7e, the seat plate 7 lifts the extension rail 6 (while supporting it) and moves the extension rail 6 to the base end side (reduction posture side). It is a movement to, and the upward movement is performed while moving up and immersing). When the shutter curtain 1 is further opened from this state, the second traveling roller 11 of the operating arm 9 is attached to the seat plate first stopper piece 7f and the traveling rail 7e.
The corner portion (inside portion of the stopper piece 7f) comes into contact with the guide piece 5 and the extension rail 6 so that the guide plate 5 and the extension rail 6 are supported by the seat plate 7 via the operating arm 9. In this case, the shutter is released. It is set so that the upward swing of the guide rail 4 starts with the upward movement of the curtain 1.

In the above-mentioned state, the operating arm 9 has the seat plate 7
It tries to swing in either the left or right direction by receiving the upper power from, but at this time, as described above, the support roller 12 is provided inside the upper part of the operation arm 9 in the left and right direction, and Inward swinging is restricted. For this reason, the operating arm 9 is set in a swinging posture in which the second traveling roller 11 is displaced outward in the left-right direction, and in this state, the operating arm 9 is gradually transformed into the lying posture. In addition, the guide rail 4 via the operating arm 9
In the upward swinging of the extension rail 6, the extension rail 6 is also moved to the base end side at the same time. Then, when the operating arm 9 is in the lying posture, the traveling rail 7e comes into contact with the supporting roller 12, and when this happens, the guide rail 4 moves the supporting roller 12 from the support by the seat plate 7 via the operating arm 9. The extension rail 6 is transformed into a contracted posture when it is supported by the seat plate 7 via the guide piece. It is set so as to swing upward together with 5.

From this state, the shutter curtain 1 is further
When the upward movement is performed, the guide roller 13 of the extension rail 6 and the seat plate traveling rail 7e are gradually separated from each other, and the movement restriction by the seat plate 7 to the extension rail 6 is released to be in a free state.
Although the shutter curtain 1 tries to move to the extended posture side, the movement is restricted by the guide roller 13 coming into contact with the seat plate second stopper piece 7h, and when the seat plate 7 reaches the lintel position, the shutter curtain 1 Is set to a fully open position. In this state, the guide rail 4 is in a horizontal posture and does not penetrate the seat plate 7, so that the closing body 14 at the tip of the extension rail 6 is set to be automatically closed. It is set so that the guide rail 4 is transformed into the storage posture in accordance with the opening operation of the curtain 1.

Reference numeral 16 is a lid provided on the lintel portion and is set so as to cover the entire fireproof shutter provided above the ceiling surface. This lid 16 is
The guide rail 4 that swings downward with the downward movement of the shutter curtain 1 is configured to automatically open by displacing the lever 16a downward.

In the embodiment of the present invention configured as described above, the guide rail 4 is composed of the guide piece 5 and the extension rail 6, and in the closing operation of the shutter curtain 1, the guide piece 5 in the horizontal posture. The extension rail 6 which is in a retracted posture immersing with respect to the guide piece 5 swings downward and transforms into a drooping posture, and then the extension rail 6 moves downward and transforms into a predetermined extension posture. In the opening operation of the shutter curtain 1, after the extension rail 6 that is in the extended posture with respect to the guide piece 5 in the hanging posture is transformed into the contracted posture, the extension rail 6 and the guide piece 5 swing upward and move horizontally. It transforms into a posture. Thus, when the guide rail 4 is in the hanging posture, the extension rail 6 is in an extended posture in which the extension rail 6 projects long from the lower end portion of the guide piece 5, but in the horizontal posture,
Since the extension rail 6 is in a contracted posture in which it slightly projects from the lower end portion of the guide piece 5, even if the frontage height H of the large opening is high, the frontage width W is set to twice the frontage height H. You don't have to. Therefore, even though the guide rail is a swing-transformation type, the frontage width of the opening can be freely set without being restricted by the frontage height, and the frontage width is too wide. It is not necessary to increase the strength in consideration of the resulting bending of the shutter curtain and the winding drum, which can contribute to the weight reduction and cost reduction of the fireproof shutter.

Further, in this structure, the guide rail 4 is synchronized with the opening / closing operation of the shutter curtain 1 (in a linked manner).
The guide rail 4 is configured to swing up and down, and the guide rail 4 moves (in association with) the displacement of the seat plate 7 in the vertical direction, and the guide piece 5 and the extension rail 6 swing vertically. Therefore, unlike the conventional one, a mechanism for swinging the guide rail, a mechanism for extending and contracting the extension rail, and the like are not required, so that the structure can be simplified and the cost can be reduced.

Further, in this structure, an operating arm 9 is provided at the lower end of the guide piece 5 in addition to the support roller 12, and when the swing operation of the guide piece 5 is linked to the opening / closing operation of the shutter curtain 1, the support roller 12 is provided. Since the operation arm 9 and the operating arm 9 are sequentially brought into contact with the seat plate 7, the swinging of the guide rail 4, particularly the swinging from the state in which the guide rail 4 is in a substantially drooping position, may be a sudden operation. It is prevented so that the swinging deformation of the guide rails 4 is synchronized with the closing operation of the shutter curtain 1 to be smooth.
Moreover, in this case, the operation arm 9 is provided with the support roller 12 located on the inner side in the left-right direction of the upper end portion,
With the opening operation of the shutter curtain 1, the operation arm 9
Since the swinging deformation of the shutter to the lying posture is allowed only in the predetermined direction, the deformation to the lying posture is surely performed, and the opening and closing operation of the shutter curtain 1 can be surely performed, which is highly reliable. Can be a product. Moreover, in this device, the member for restricting the swing of the operating arm 9 is also used by the support roller 12 required for following the guide rail 4 to the seat plate 7, so that the member can also be used in common. , Simplification of the structure is realized.

Of course, the present invention is not limited to the above-mentioned embodiment, and the rocking restriction of the operating member by the operating member is such that the seat plate abutting member interferes with the operating member in the natural hanging state. Alternatively, the axial center of the actuation body may be inclined so that the distal end portion of the actuation body faces outward in the left-right direction with respect to the base end portion in the natural hanging state.

By the way, in this embodiment, as described in the first embodiment, the guide rail 4 is provided with the extension rail 6 at the lower end portion of the guide piece 5 so as to be retractable and retractable. This is a configuration in which the swinging operation of the guide rail 4 is started in the process of being in the contracted posture with respect to the guide piece 5.
When starting this swinging operation, the guide rail 4
As described above, the extension guide rails 6 which are being immersed are stacked below the guide pieces 5, and when the extension guide rails 6 are made of a heavy material, the amount of , The bottom is heavy. In the guide rail 4 having such a heavy lower portion, the seat plate traveling rail 7e comes into contact with the second traveling roller 11 at the lower end portion of the operation arm 9 arranged on the guide rail 4 (see FIG. 10).
(B) or the state shown in FIG. 12 (A)), the operating arm 9
When upward force is applied to the guide rail 4 via the guide rail 4, depending on the weight of the lower portion of the extension rail 6, the operating arm 9
A large moment acts on the spindle 9b of
The guide rail 4 may jump and start shocking upward swing. Incidentally, this jumping action also changes depending on the length of the operating arm 9. The longer the operating arm 9, the larger the moment becomes, the easier it is to jump, and the larger the jumping amount.

In this way, when the guide rail 4 starts shocking upward swing and jumps up, the second traveling roller 11 is momentarily not supported by the seat plate. In this state, the posture of the actuating arm 9 becomes unstable, and there is a fear that the tip of the actuating arm 9 will be positioned inward in the left-right direction. Moreover, in the case where the opening operation is stopped in time with the start of the shocking upward swing of the guide rail 4, the shutter curtain 1 stops at the stop position as shown in FIG. 12 (B). On the other hand, the operating arm 9 supported by the guide rail 4 that has swung upward has a hanging posture about the support shaft 9a, and the second traveling roller 11 at the tip of the operating arm 9 keeps the hanging posture while the seat plate traveling rail 7e. May come into contact with. When the shutter curtain 1 is further opened from this state, the distal end of the operating arm 9 can be swung in any of the left and right directions.
As shown in (C), it is assumed that the tip swings in a posture positioned inward in the left-right direction, and if the opening operation is continued after this state, the seat plate 7 It is possible that the arm 9 is damaged.

Therefore, a fireproof shutter configured to solve such a problem will be described as a second embodiment with reference to FIGS. 13 to 19. The guide rail 17 according to the second embodiment is configured to include a pair of front and rear guide pieces 18, and the extension rail 19 is provided at the tip of each guide piece 18 so as to transform into an extended posture and a contracted posture. It is provided so that it can be moved in and out (sliding movement), and these configurations are the same as those in the first embodiment. Furthermore, in this structure, one end is supported by the lower end of the guide piece 18, and the other end is extended rail 19
The coil ammunition 20 is mounted while being supported by the lower end of the coil ammunition 20. The coil ammunition 20 is set so as to be substantially balanced with the weight of the extension rail 19 as the extension rail 19 is in the extended posture, and thus, the extension rail 19 moves along with the upward movement of the seat plate 21. Care is taken to make the reduction operation smoother. The guide piece 18 includes an operating arm 9, a first traveling roller 10 provided on a support shaft of the operating arm 9, a second traveling roller 11 provided at a tip of the operating arm 9, and a swing restricting member for the operating arm 9. The support roller 12 is provided, and each of them has the same configuration as that of the first embodiment.

On the other hand, similar to the first embodiment, the seat plate 21 is erected from the bottom piece portion 21a and the central portion of the bottom piece portion 21a in the front-rear direction, and is connected to the shutter curtain slat 1a located on the upper side. Connecting piece portion 21b, and front and rear piece portions 21c standing upward from the front and rear edge portions of the bottom piece portion 21a,
21d, and a pair of traveling rails (corresponding to the traveling surface of the present invention) 21e are formed in front of and behind the connecting piece portion 21b. The front and rear traveling rails 21e are connected to the first and second traveling rollers 10 and 11 arranged on the pair of front and rear guide pieces 18, and the supporting roller 1
2. Further, the guide roller 13 of the extension rail 19 is set to run left and right in a state where it can freely move in and out. Further, a first stopper piece (corresponding to a stopper piece of the present invention) 21f is formed at both left and right ends of the seat plate 21 in a state orthogonal to the traveling rail 21e.
The inside position of 1f and the second traveling roller 11 at the lower end of the pair of front and rear actuating arms 9 that hang down naturally with respect to the guide rail 4 in the hanging posture are set to face each other in the vertical direction. Incidentally, 21g is a fixed piece provided on the lower surface of the seat plate bottom piece 21a, and has the same configuration as that of the first embodiment.

In the seat plate 21 of the second embodiment, guide guide pieces 22 corresponding to the guide members of the present invention, which are located at both ends of the front and rear traveling rails 21e, are integrally arranged. ing. The guide guide piece 22 is formed with a first inclined surface portion 22a gradually lowering toward the stopper piece 21f side at an end portion on the stopper piece 21f side, and a high portion 22b is formed following the first inclined surface portion 22a. Further, it is formed in a mountain shape with a flat top portion in which a second inclined surface portion 22c is formed to be lower toward the inner side in the left-right direction following the higher portion 22b. The guide piece 22 is the stopper piece 2
The movement trajectory of the second traveling roller 11 at the tip of the operation arm 9 that moves together with the guide rail 17 in the state where the first inclined surface portion 22a on the 1f side shocks the upper swing of the guide rail 17 as described above. Is formed on an inclined surface having a portion corresponding to. The second inclined surface portion 22c on the side opposite to the stopper piece 21f has the second traveling roller 11, the support roller 12, and the second supporting roller 12 during the closing operation of the shutter curtain 1.
The guide roller 13 is for riding on the high position portion 22b, and the length of the high position portion 22b in the left-right direction is set to be shorter than the length of the operating arm 9. Thereby, the first traveling roller 10 is configured so as not to travel on the guide guide piece 22. By the way, in the present embodiment, the guiding guide piece 22 is arranged in front of and behind the seat plate 21,
Further, although the left and right ends are separately arranged as separate members, the left and right guiding guide pieces 22 may be formed as an integral member. In this case, the second inclined surface portion can be eliminated by assuming that the first inclined surface portion is formed on the left and right and the high-order portion is formed in the middle portion thereof.

Next, the operation of the guide rail 17 associated with the opening / closing operation of the shutter curtain 1 in the second embodiment will be described. When the opening operation of the shutter curtain is started from the fully closed state (FIG. 15 (A)) of the shutter curtain 1, the seat plate 21 automatically opens and closes the closing body 23 provided at the lower end portion of the extension rail 19. When the guide roller 13 comes in contact with the traveling rail 21e while moving, the seat plate 21 lifts the extension rail 19 (while supporting it) and moves the extension rail 19 toward the base end while moving upward. Is performed (FIG. 15 (B)). Here, the guide roller 13 is set so as to be positioned at and in contact with the inclined end portion of the first guide surface piece 22a of the guiding guide piece. When the shutter curtain 1 is further opened from this state, the corner portion between the seat plate first stopper piece 21f and the traveling rail 21e (the inside portion of the stopper piece 21f) is formed on the second traveling roller 11 of the operation arm 9. Abut (Fig. 15
(C)), the guide piece 18 and the extension rail 19 receive the support from the seat plate 21 via the operating arm 9 and the guide rail 4
Starts to swing upward, but at this time, as described above,
When the load of the extension rail 19 is large, the guide rail 17 may be shocked to swing upward. And
In this case, even if the operating arm 9 moves due to the jumping of the guide rail 17, the operating arm 9 is guided to the stopper piece 21f side by the second traveling roller 11 coming into contact with the guiding guide piece 22. , The tip is positioned inward in the left-right direction to prevent the user from lying down.

That is, as shown in FIG. 16 (A), when the guide rail 17 bounces greatly, the operating arm 9 moves together with the bounced guide rail 17, but the seat plate running rail 21e does not. A guide guide piece 22 is provided along the movement locus, and the second traveling roller 11 is set so as to ride on the guide guide piece first inclined surface portion 22a following the guide roller 13. Therefore, when the shutter curtain 1 is further moved upward from this state, the second traveling roller 11
Is forcedly guided to the stopper piece 21f side so as to slide down the first inclined surface portion 22a, and swinging is regulated so that the tip of the operating arm 9 does not move inward in the left-right direction from the support shaft 9b. Is set to. In addition, in the case where the guide rail 17 has a small bounce (see FIG. 16).
(B)) It is assumed that the second traveling roller 11 does not reach the guide guide piece 22 side, but in this case, the second traveling roller 11 tries to swing toward the first inclined surface portion 22a side. Is set to be guided to the stopper piece 21f side in a state where the first inclined surface portion 22a is pushed back. Further, when the guide rail 17 jumps, the second traveling roller 11 travels on the guide guide piece first inclined surface portion 22a together with the guide roller 13, so that the two traveling rollers 11 and 13 travel. Due to the resistance force, the guide rail 17 is flipped up and the operating arm 9
Is set so that movement of the is suppressed. At this time,
The heavier the load on the extension rail 19 is, the higher the suppression effect can be.

When the shutter curtain 1 is further opened from this state, the operating arm 9 gradually changes to the lying posture with the second traveling roller 11 positioned outside in the left-right direction (see FIG. 17 ( A), (B),
(C)), while swinging the guide rail 17 upward,
The extension rail 19 is further reduced. Then, in time for the working arm 9 to fall to the lying position,
The seat plate traveling rail 21e and the support roller 12 come into contact with each other. At this time, as shown in FIG. Also comes into contact with the inner traveling rail 21e. In this state, the guide rail 17
Oscillates upward from the support by the seat plate 21 via the operation arm 9 to the support by the seat plate 21 via the support roller 12. Then, from this state, the second traveling roller 11 of the operating arm 7 moves from the first inclined surface portion 22a of the guide guide piece 22 to the high position portion 22b and then to the second inclined surface portion 22c with the opening operation of the shutter curtain 1. It is set so as to roll along (FIGS. 18B and 18C).
The subsequent opening operation is similar to that of the first embodiment, and as shown in FIGS. 19 (A) and 19 (B), the first and second traveling rollers 10 and 11 and the support roller 1 are provided.
When the shutter curtain 1 is fully opened and the shutter curtain 1 is opened and the guide rail 17 is swung upward while the two travel on the traveling rails 21e, respectively, the guide rail 17 is moved to the retracted posture. It is set to be transformed.

On the other hand, in the closing operation of the shutter curtain 1, the second traveling roller 11 moves the traveling rail 21.
In the state in which the stopper piece is run outward in the left-right direction, rides on the second inclined surface portion 22c inside the guide guide piece 22, and descends the first inclined surface portion 22a on the stopper piece 21f side via the high-order portion 22b. 21f, except that the operation is performed so as to reach 21f, it is set to be performed by the first embodiment and procedure.

In this case, when the extension rail 19 is contracted and the lower end of the guide rail 17 becomes heavier, when the guide rail 17 starts to oscillate upward, the guide rail 17 is operated to be flipped up. Also guide rail 17
The second traveling roller 11 of the actuating arm 9 supported by the abutment member abuts on the first inclined surface portion 22a and the stopper piece 21f.
Since the operation arm 9 is guided to the side, the deforming operation of the working arm 9 in which the second traveling roller 11 is in the lying posture in which the second traveling roller 11 is positioned outward in the left-right direction is surely performed, and the lying posture in the opposite direction is obtained. It is possible to avoid a problem that the member is damaged. Moreover, in this case, the stopper piece 21f of the guiding guide piece 22
Since the first inclined surface portion 22a on the side is an inclined surface in the ascending direction formed along the movement trajectory of the operation arm 9 when the guide rail 17 jumps up, as described above,
Along with the flip-up operation, the second traveling roller 11 rides on the first inclined surface portion 22a. Furthermore, at this time,
Since the guide roller 13 arranged on the extension rail 19 rides on the first inclined surface portion 22a, a resistance force is given to the movement of the operation arm 9 to suppress the movement of the operation arm 9, and the movement of the extension rail 19 is suppressed. Also, resistance is applied and movement is suppressed, and therefore, the guide rail 17 can be suppressed from jumping up.

In the guide rail embodying the present invention, the downward swinging operation of the guide rail is performed before the extending operation of the extension rail, and the upward swinging operation of the guide rail is performed. It will be done at a later stage of the contraction operation of the extension rail. Moreover, the extension rail of the guide rail is configured to be in the extended posture before the seat plate is in contact with the floor surface, and thus the lower end is configured to be in contact with the floor surface. In this way, when the lower end of the extension rail touches the floor, the guide rail may swing back and forth if there is a pressure difference across the curtain surface of the shutter curtain. It is assumed that the floor surface is rubbed and the floor surface is damaged.

Therefore, the guide rail 24 in the third embodiment shown in FIG. 20 can be constructed. That is, the lower ends of the pair of front and rear extension rails 25 forming the guide rail 24 are formed in a U-shape in a front view so as to integrally connect laterally outer portions in the hanging posture of the guide rail 24. The plate 26 is fixed. A roller bearing 27 having a roller 27a that is movable in multiple directions is located at an intermediate portion in the left-right direction at a branch piece portion 26a that is a portion facing the extension rails 25 of the lower end plate 26. Plate 26
The roller 27a is attached so as to protrude from the plate surface. As a result, the floor and the guide rail 24
The contact with the roller 27a that is movable in the other direction and the floor surface prevents the guide rail 24 from damaging the floor surface even if the guide rail 24 swings back and forth and right and left.

[Brief description of drawings]

FIG. 1 is a schematic front view of a building fire protection shutter.

FIGS. 2A and 2B are a side view and a front view of a guide rail, respectively.

3 (A), (B), and (C) are respectively FIG.
It is the XX sectional view, YY sectional view, and ZZ sectional view of (A).

4 (A) and 4 (B) are an exploded plan view of a guide rail and a front view of an operating arm, respectively.

5 (A), (B), (C), and (D) are respectively a plan view and a front view of a seat plate, and an XX sectional view of FIG. 5 (B).
It is a side view.

FIG. 6 is a side view of the guide rail in a horizontal posture.

7 is a sectional view taken along line XX of FIG.

8 (A), (B), and (C) are front views for explaining the transition of the guide rail from the horizontal posture to the drooping posture.

9 (A) and 9 (B) are front views for explaining the transformation of the guide rail from the horizontal posture to the hanging posture.

10 (A) and 10 (B) are front views for explaining the transformation of the guide rail from the horizontal posture to the hanging posture.

11 (A), (B), and (C) are front views for explaining the transformation of the guide rail from the horizontal posture to the hanging posture.

12 (A), (B), and (C) are front views illustrating a state in which the guide rail swings upward due to an impact.

FIG. 13 is a front view of a guide rail according to a second embodiment.

14 (A), (B), (C) and (D) are respectively a plan view, a front view and a sectional view taken along line XX of FIG. 14 (B) of the seat plate in the second embodiment. FIG.

15 (A), (B), and (C) are front views for explaining the transition of the guide rail from the drooping posture to the horizontal posture in the second embodiment.

16 (A) and 16 (B) are front views for explaining a state in which the guide rail according to the second embodiment is shockingly swung upward.

17 (A), (B), and (C) are front views for explaining the transition of the guide rail from the drooping posture to the horizontal posture in the second embodiment.

18 (A), (B), and (C) are front views for explaining the transition of the guide rail from the drooping posture to the horizontal posture in the second embodiment.

19 (A) and 19 (B) are front views for explaining the transition of the guide rail from the drooping posture to the horizontal posture in the second embodiment.

20 (A), (B), and (C) are side views of the lower end portion of the guide rail in an extended posture, a bottom view of FIG. 20 (A), and an outline of a roller bearing, respectively, in the third embodiment. It is a perspective view.

[Explanation of symbols]

1 shutter curtain 3 switch 4 guide rails 5 guide pieces 5b Left and right inner part 5d notch 6 extension rails 6b Extension inside piece 7 seat plate 7e Running rail 8 slide rails 9 Working arm 10 First running roller 12 Support roller 13 Guide roller 14 Blocked body

Claims (10)

[Claims] 1. A shutter curtain housed in a ceiling housing unit, and a movable guide rail whose base end is pivotally supported so as to swing from a horizontal position housed in the ceiling to a hanging position hanging from the ceiling. In the architectural shutter provided with, in configuring the guide rail to swing and change with the opening and closing operation of the shutter curtain, the tip of the guide rail is connected to the closing and opening operations of the shutter curtain. Movable guide rails for architectural shutters that have extension rails that appear and disappear. 2. The extension rail according to claim 1, wherein the extension rail is movably connected to the guide rail in the rail length direction, and extends and retracts following the closing and opening operations of the shutter curtain in the hanging posture of the guide rail. Movable guide rails for existing architectural shutters. 3. The shutter according to claim 2, wherein the extension rail is connected to the guide rail via a slide rail, and the extension rail protrudes after the guide rail is transformed into a drooping posture in association with the closing operation of the shutter curtain. A movable guide rail in a building shutter that is configured so that the guide rail is transformed into a horizontal posture after the extension rail is immersed in connection with the opening operation of the curtain. 4. The architectural shutter according to claim 1, 2 or 3, wherein the extension rail is configured to follow the shutter curtain when an engaging member provided on the extension rail contacts a seat plate. Movable guide rail in. 5. The seat rail contact member for contacting the seat rail at the lowermost end of the shutter curtain from above to follow the operation of the seat rail, according to claim 1, 2, 3 or 4. The base end is swingably supported, and when the guide rail hangs down, the tip abuts the seat plate of the shutter curtain that opens before the seat plate abutment member to guide the swing of the guide rail. The movable guide rail in the architectural shutter, wherein the guide rail is provided with a swing restricting member for restricting the swing direction of the actuating body. 6. The architectural shutter according to claim 5, wherein the actuating member has a base end portion provided in the vicinity of the seat plate contact member, and the swinging restricting member of the actuating member is constituted by the seat plate contact member. Movable guide rail. 7. The seat plate according to claim 5 or 6,
A traveling surface on which the tip of the operating body abuts movably and a stopper piece are formed at the end of the traveling surface, and the traveling body and the seat are seated on the traveling surface during the opening operation of the shutter curtain. A movable guide rail in a building shutter, which is provided with a guide member that guides the tip of the actuating body toward the stopper piece side when the guide rail makes a shocking upward swing due to contact with the plate. 8. The guide member according to claim 7, wherein the guide member is formed along a movement locus of the tip of the actuation body due to the shocking upward swing of the guide rail, and is configured to suppress the movement of the actuation body. Movable guide rail for existing architectural shutter. 9. The movable guide rail in a building shutter according to claim 8, wherein the guide member is formed on an inclined surface that is lower toward the stopper piece. 10. A shutter curtain housed in a ceiling housing unit, and a movable guide rail whose base end is pivotally supported so as to swing and transform from a horizontal position housed in the ceiling to a hanging position hanging from the ceiling. In the architectural shutter provided with, in configuring the guide rail to swing and change with the opening and closing operation of the shutter curtain, the tip of the guide rail is connected to the closing and opening operations of the shutter curtain. When the shutter curtain is closed and the shutter rail is closed, the guide rail swings from the horizontal position to the drooping position. Movable type of architectural shutter configured to swing and transform into a horizontal posture after the extension rail is immersed in the guide rail How to move the guide rail.