JP2001303872A - Winding shaft supporting method for building shutter apparatus and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding shaft supporting apparatus for a shutter and its supporting method for a building, with which a middle portion of the winding shaft in an axial direction can be supported as scheduled. SOLUTION: A rope 46 presumed to be a winding shaft is erected between right and left brackets 5 for holding both the end portions in the axial direction of the winding shaft operating for supplying and winding the shutter curtain, and this rope 46 is able to judge the winding shaft supporting position at the middle portion in the shaft direction of the winding shaft, a mark is shown to the position on each attaching body 20 corresponding to the shaft support position and, in correspondence with this mark position, a roller to be supported upward in the middle of the winding shaft in the axial direction is installed to each attaching body 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of supporting a winding shaft for feeding and winding a shutter curtain of a shutter device for a building at an intermediate portion in the axial direction, and a supporting device therefor. And an entrance / exit shutter device for opening / closing an entrance / exit.

[0002]

2. Description of the Related Art A take-up shaft in a take-up type building shutter device is rotatably held at both axial ends by holding members attached to a building frame. It is fed out and wound up. Among such winding type building shutter devices, there is a disaster prevention shutter device for fire prevention and smoke prevention.

If this disaster prevention shutter device is a large opening shutter device for forming a disaster prevention section by closing a large opening in a building with a shutter curtain when a fire occurs, the winding shaft becomes long. In such a shutter device, the amount of deflection of the take-up shaft due to its own weight of the take-up shaft and the shutter curtain wound therearound becomes large, and there is a possibility that the shutter curtain can be smoothly fed out and taken up. In order to eliminate such a problem, there has been proposed a supporting device in which an intermediate portion of the winding shaft in the axial direction is supported upward by a supporting member such as a roller.

[0004]

In order to support an intermediate portion of the take-up shaft in the axial direction with a support member such as a roller,
The position of the support member with respect to the winding shaft must be set accurately. However, since the winding shaft is cylindrical, this setting operation is troublesome and time-consuming. The support member is attached to a mounting body, and the mounting body is connected to a building body to which the holding member for rotatably holding both ends of the winding shaft in the axial direction is attached. The surface is often not flat. In such a case, even if an attachment is connected to the building frame and a support member is attached to this attachment to support the intermediate portion of the take-up shaft in the axial direction, the position of the support member with respect to the take-up shaft is reduced. It is difficult to set accurately.

When the support member has an outer surface extending in the axial direction of the take-up shaft, such as a roller, the support member is taken up by the support member in order to support the take-up shaft upward in a predetermined manner. The shaft must be in exact line contact,
In order to support the winding shaft by the line contact of the supporting member as described above, an operation of accurately setting the position of the supporting member with respect to the winding shaft must be performed. Furthermore, in order for the support member to make linear contact with the winding shaft, the attitude of the support member itself with respect to the winding shaft must be set accurately, which is a difficult task. When a plurality of support members are spaced apart in the diameter direction of the winding shaft and arranged, and these support members are brought into line contact with the winding shaft to support the winding shaft, the respective supporting members are Must be performed to accurately set the posture of the roller with respect to the winding shaft, and this accurate setting is troublesome and difficult.

For this reason, it has been conventionally difficult to support the winding shaft in the axial direction of the winding shaft as planned.

SUMMARY OF THE INVENTION An object of the present invention is to provide a winding shaft supporting method and a device for a building shutter device, in which a support member can support an intermediate portion of the winding shaft in the axial direction as intended.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a method for supporting a winding shaft of a shutter device for buildings according to the present invention, in which both ends in the axial direction are rotatably held by holding members for feeding and winding a shutter curtain. A method of supporting an intermediate portion in the axial direction of a shaft with a support member, wherein a winding shaft assumption member assuming the winding shaft is installed between the holding members before holding the winding shaft, and thereafter, The support member is disposed at a position where the support member supports the take-up shaft at a position in the axial direction that is determined by the take-up shaft assumed member.

According to this take-up shaft support method, the take-up shaft is supposed to be provided between the holding members before holding both ends in the axial direction of the take-up shaft. Since the support member is arranged at the position where the winding shaft is supported by the supporting member in the middle of the winding shaft axis direction that is known from the assumed member, the support member is arranged at a position exactly corresponding to the winding shaft. When the member holds both ends of the take-up shaft in the axial direction, the support member can support an intermediate portion of the take-up shaft in the upward direction as expected.

In this winding shaft support method, the support member may be directly attached to the building body when the holding member is attached to the building body, or may be attached to an attachment body connected to the building body. Alternatively, a mounting member may be provided between two holding members provided in the axial direction of the winding shaft, and a support member may be disposed on the mounting member.

In the case where the holding member is attached to the building frame and the supporting member is mounted on the mounting member coupled to the building frame, at least a part of the mounting member is mounted on the building frame, and then the winding shaft is assumed. By mounting the member between the holding members, a mark is provided at a position of the mounting body corresponding to the winding shaft support position found by the winding shaft assumed member, and a support member is provided at a position corresponding to the mark on the mounting body. May be attached.

According to this, the position where the support member is to be disposed can be clarified by the mark, and the support member may be attached to the position of the mounting body indicated by the mark, so that the support member can be moved to the predetermined position. Placement work can be performed easily and accurately.

In the above-described winding shaft supporting method, the winding shaft supposed member can be installed between two holding members arranged in the axial direction of the winding shaft to determine the winding shaft supporting position. Any shape and structure may be used as long as they can be made.
For example, a string-like member including a string such as a water thread or a wire, or a rod-like member may be used.

However, if the winding shaft assumed member is a string-shaped member, it is lightweight and foldable, so that it is easy to transport the building shutter device to the construction site and to handle the building shutter device at the construction site. Can be

A winding shaft supporting device for a building shutter device according to the present invention is a winding shaft in which both ends in the axial direction are rotatably held by holding members attached to a building frame in order to feed out and wind a shutter curtain. An apparatus for supporting an axial middle portion of a shaft with a support member, wherein the support member is displaceably attached to an attachment body coupled to the building frame so as to have a posture corresponding to the winding shaft. It is characterized by having.

According to this winding shaft support device, since the supporting member is displaceably mounted on the mounting body connected to the building frame so as to be in a posture corresponding to the winding shaft, both ends in the axial direction are provided. Even if the position of the take-up shaft rotatably held by the holding member has an error with respect to the original position, the support member is used to support the intermediate portion of the take-up shaft in the axial direction. The posture follows the take-up shaft naturally, and the take-up shaft is supported upward as expected.

The direction in which the support member can be displaced relative to the mounting body is determined in accordance with the direction of a posture error that may occur on the winding shaft, and when the axis direction of the winding shaft is lateral, the vertical axis is centered. The rotation direction may be either the rotation direction described above, the rotation direction about a horizontal axis perpendicular to the horizontal direction, or both.

The above-described method for supporting a take-up shaft of a shutter device for a building according to the present invention and the take-up shaft support device for a shutter device for a building can be implemented as independent independent inventions. The present invention can also be implemented as a combination invention applied to the device at the same time.

In both the method for supporting a take-up shaft of a shutter device for a building and the take-up shaft support device for a shutter device for a building according to the present invention, the support member may be a roller or the like.
It may extend in the axial direction of the winding shaft and have a curved outer surface in the diameter direction of the winding shaft, and may be in line contact with the winding shaft,
Like a plate-like member, a plate-shaped member extending in the axial direction of the winding shaft and having an outer surface flattened in the axial direction and the diametric direction of the winding shaft may be in line contact with the winding shaft, and may be spherical. It may be a member that is in point contact with the winding shaft, a member having a curved concave portion corresponding to the peripheral surface of the winding shaft and may be in surface contact with the winding shaft, and the outer shape of the supporting member is optional. is there. In addition, when the support member is to be in line contact with the winding shaft and in surface contact,
The length of the winding shaft in the axial direction is arbitrary. Further, when the supporting member has a curved concave portion corresponding to the peripheral surface of the winding shaft and is brought into surface contact with the winding shaft, the supporting member is prevented from swinging when the rotating shaft is rotated. The anti-shake member may also be used.

The supporting member may be a rotating body such as a roller that rotates with the winding shaft, or may be a stationary body that does not rotate.

Further, the number of the support members may be one, but may be plural at a distance in the diameter direction of the winding shaft, or plural at a distance in the axial direction of the winding shaft. A plurality of support members may be provided.

When the number of the supporting members is a plurality of members spaced apart in the diameter direction of the winding shaft, the winding shaft can be dispersedly supported at a plurality of positions, and the fluctuation of the winding shaft in the diameter direction can be reduced. This can be effectively prevented.

In the winding shaft support device for a building shutter device according to the present invention, when a plurality of support members are provided, each support member is individually displaceably mounted on the mounting body. Alternatively, these support members may be attached to the attachment body so as to be freely displaceable. However, according to the former, it is preferable to employ the former, since the posture of each support member can be accurately made to correspond to the winding shaft.

In the method and apparatus for supporting a take-up shaft of a shutter device for a building according to the present invention, a plurality of support members are spaced apart in a diameter direction of the take-up shaft, and these support members are used as the take-up shaft. In the case of having an outer surface extending in the axial direction, a flexible sheet-like member made of cloth, rubber, synthetic resin, or the like that comes into surface contact with the winding shaft may be provided between these support members. .

According to this, since the winding shaft is supported by the surface of the flexible sheet-like member, the supporting load per unit area can be reduced. In addition. The flexible sheet-like member may rotate with the winding shaft or may not rotate. In the case of rotating, the flexible sheet member is endless like a rotating belt.

In the case where the winding member is supported by bringing the supporting member into direct contact with the winding shaft, and when at least the surface of the supporting member is made of a hard material such as metal, this hard material is wound. It may be brought into contact with the take-up shaft, but by coating the surface of the support member with a soft synthetic resin, wrapping the fabric, winding the tape, or the like, at least the portion of the support member that contacts the take-up shaft has a soft or elastic property. Preferably, According to this, the winding shaft and the shutter curtain wound around the winding shaft can be prevented from being damaged.

In the method and the apparatus for supporting a take-up shaft of a shutter device for a building according to the present invention, the supporting member supporting the take-up shaft at an intermediate portion in the axial direction prevents a large bending of the take-up shaft. This is because the shutter curtain can be smoothly fed out from the shaft, and the winding can be performed. If this can be realized, the supporting member at the axial middle portion of the winding shaft is supported by the winding shaft extending in the lateral direction. The height position of the middle part in the axial direction may be lower than the height position of both ends of the winding shaft, and the height positions may be the same. It may be performed such that the height position in the middle part in the axial direction is higher than the height position of the part.

Further, the winding shaft support device of the building shutter device according to the present invention may be provided at only one position in the axial direction of the winding shaft, or may be provided at a plurality of positions.

The building shutter device to which the present invention is applied may have only one take-up shaft, and a plurality of take-up shafts are arranged in series in the axial direction with their axes aligned. Adjacent winding shafts may be of a continuous type in which the winding ends are arranged in series with a shift having an overlap margin between the ends, and
A plurality of winding shafts may be bent.

In the case where the building shutter device to which the present invention is applied has a plurality of winding shafts, the winding shaft supported in the middle of the axial direction by the support member is a member of these winding shafts. Only one of them, a plurality of them, or all of them may be used.

Further, in the building shutter device according to the present invention, an auxiliary shaft is disposed adjacent to the winding shaft in parallel with the winding shaft. In the case of a shutter device in which the direction change of the shutter curtain that is fed and wound is performed by an auxiliary shaft, the upward support of the middle part in the axial direction by the support member may be performed only on the winding shaft. Often, it may be performed for both the winding shaft and the auxiliary shaft. When performing both the winding shaft and the auxiliary shaft, the respective support members provided for the upward support of the winding shaft and the auxiliary shaft may be arranged on the same mounting body, or may be respectively arranged on different mounting bodies. You may.

Furthermore, in the building shutter device according to the present invention, not only the above-mentioned supporting member but also, for example, the same as or higher than the height position of the axis of the winding shaft, or these are disposed. A portion having a length in the circumferential direction of the winding shaft extending over the position and having a surface contact with the winding shaft to suppress run-out of the winding shaft at the time of rotation or the like and to wind the shutter curtain wound around the winding shaft. A holding member for preventing collapse may be provided. In addition, such a holding member may be also used as an attachment body to which the support member is attached.

The shutter device for buildings to which the present invention is applied may be a shutter device for disaster prevention, or a shutter device for opening and closing windows, doorways, etc. in buildings such as houses, buildings, factories, and warehouses. The present invention can be applied to any type of shutter device.

Further, the shutter curtain which is unwound from the winding shaft and wound up may be formed of a sheet made of cloth or a synthetic resin such as vinyl chloride, may be formed of slats, or may be formed of a panel. May be formed by pipes connected by links, may be formed by nets, or may be a composite of at least two of these.

Further, the direction of movement of the shutter curtain by feeding and winding from the winding shaft may be vertical or horizontal, or may have a tilt angle with respect to these directions.

[0036]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing the entirety of a building shutter device according to the present embodiment. The shutter device is a disaster prevention shutter device for a large opening for forming a disaster prevention section in a building when a fire occurs. .

The winding shaft 1 of this disaster prevention shutter device is
The take-up shaft 1 is axially disposed in a space above the ceiling space 4 separated from the indoor space 3 by the ceiling member 2 and both ends in the axial direction of the winding shaft 1 are rotatably held by brackets 5 serving as holding members. . These brackets 5 are connected to a building frame 6 existing in the space 4 above the ceiling. An upper end portion of a shutter curtain 8 having a lower end serving as a seat plate 7 is connected to the winding shaft 1. The shutter curtain 8 formed of a glass cloth or a silica cloth or by applying a refractory paint to the shutter curtain 8 is In normal times, it is wound around the winding shaft 1.
The shutter curtain 8 is fed and wound from the winding shaft 1 by forward and reverse rotation of the winding shaft 1, and both ends in the width direction of the shutter curtain 8 are columns and walls formed on both left and right sides of the indoor space 3. And the like are slidably inserted into the guide rails 10 attached to the building frame 9 such as the retaining member by the retaining member. The movement of the shutter curtain 8, which moves up and down to close and open after passing through, is guided and guided by these guide rails 10.

A switch 11 composed of a combination of a motor and a brake is attached to one of the pair of left and right brackets 5.
And transmission means 12. The brake of the switchgear 11 is released by operating a manual lever (not shown) due to a fire or by detecting a smoke or heat by a sensor (not shown), whereby the shutter curtain 8 moves the winding shaft 1 by its own weight. Descend while rotating.

The winding shaft 1 whose both ends in the axial direction are rotatably held by the bracket 5 is composed of S2-S2 in FIG.
As shown in FIG. 2, which is a cross-sectional view taken along a line, a side edge 1A where the shutter curtain 8 is extended and wound.
Faces the building frame 6 side.

In the present embodiment shown in FIG. 1, the winding shaft 1 is supported at an intermediate portion in the axial direction of the winding shaft 1 at two places in the axial direction which divide the length of the winding shaft 1 into three equal parts. Are mounted, and the structure of these mounting members 20 is the same. The overall side view of the mounting member 20 is shown in FIG.
The exploded view is shown in FIG.

As shown in FIG. 2 and FIG.
Is a first attachment member 21 attached to the building frame 6,
A second mounting member 22 is connected to the first mounting member 21 and a third mounting member 23 is connected to the second mounting member 22. The first mounting member 21 is attached to the building frame 6 by using a bolt 2 having a base buried in the building frame 6 as shown in FIG.
4 is a vertical extension 21 of the first mounting member 21 shown in FIG.
This is performed by inserting the nut 26 into the hole 25 of FIG. The connection of the second mounting member 22 to the first mounting member 21 is performed by the hole 27 of the horizontal extension 21B of the first mounting member 21 and the horizontal extension 22A of the second mounting member 22 shown in FIG. This is carried out by inserting a bolt 29 shown in FIG. The connection of the third mounting member 23 to the second mounting member 22 is performed by connecting the hole 31 of the vertically extending portion 22B of the second mounting member 22 shown in FIG.
This is performed by inserting a bolt 33 shown in FIG. 2 into the hole 32 of the vertically extending portion 23 </ b> A of the third mounting member 23 and screwing a nut 34.

As shown in FIG. 3, the horizontal extending portion 23B of the third mounting member 23 is
1, 22 vertical extension parts 21A, 22B, horizontal extension part 21
As shown in FIGS. 4A and 4B, there are a pair of horizontally extending portions 23B extending in parallel with the winding shaft 1 from the lower end of the vertically extending portion 23A. As shown, the bracket 40 is erected and fixed. The bracket 40 rotatably holds two rollers 41 serving as support members for supporting an intermediate portion of the take-up shaft 1 in the axial direction upward.
These rollers 41, which are parallel to the axial direction of the winding shaft 1, extend in this diametrical direction at intervals smaller than the diameter of the winding shaft 1 as shown in FIG. They are spaced apart.

The triangle formed by connecting the respective axes of the winding shaft 1 and the two rollers 41 is an isosceles triangle, in particular, an isosceles triangle having a vertex angle of 60 degrees. It is preferable to do so. Roller 4
The diameter of 1 may be arbitrarily set according to the diameter of the winding shaft 1, the maximum winding diameter of the shutter curtain 8 on the winding shaft 1, and the like.

The fixing of the bracket 40 to the horizontally extending portion 23B of the third mounting member 23 is performed by using a hole 42 formed in the bracket 40 and a hole formed in the horizontally extending portion 23B shown in FIG. This is performed by inserting a bolt 43 shown in FIG.

In the above, as shown in FIG. 3, since the hole 31 of the vertically extending portion 22B of the second mounting member 22 is a vertically long hole, the position of the roller 41 in the mounting body 20 is Can be adjusted. Further, as shown in FIG. 4, the hole 42 of the bracket 40 is an arc-shaped long hole centered on the longitudinal center of the roller 41 at the center position between the two rollers 41, Bracket 40
The position of the roller 41 is freely adjustable in a rotation direction in a horizontal plane about the center.

As shown in FIGS. 2 and 3, marks 45 are provided on side surfaces 40 A formed at both ends of the bracket 40 in the axial direction of the winding shaft. Is displayed at the center position between the two rollers 41 held in the first position.

Next, a description will be given of the operation of supporting the winding shaft 1 in the axial middle part by the roller 41 mounted on the mounting body 20. First, before the ceiling member 2 shown in FIG. 1 is constructed, two left and right brackets 5 for holding both ends of the take-up shaft 1 are attached to predetermined positions of the building frame 6 as shown in FIG. , And first, second, and third attachment members 21, 21.
Each of the two attachment bodies 20 before the bracket 40 holding the roller 41 is fixed to the third attachment member 23 is connected to a predetermined position of the building frame 6. Thereafter, the string 46, which is a winding shaft assumed member, is tensioned between the left and right brackets 5 and installed. This erection work is performed by matching the position of the string 46 on the bracket 5 with the position of the axis of the winding shaft 1 on the bracket 5. Next, a mark 47 shown in FIG. 2 is provided by marking or the like at a position of the third mounting member 23 of each mounting body 20 at a position corresponding to the string 46 at the pair of left and right horizontal extensions 23B.

Thereafter, the string 46 is removed, and at least the third mounting member 23 is removed from the members constituting each mounting body 20, and the third mounting member 23 is removed.
A bracket 40 holding the roller 41 is mounted on the pair of left and right horizontal extension portions 23B, and the bracket 40 is fixed to the horizontal extension portion 23B with bolts 43 and nuts 44. In this fixing operation, before the nut 44 is tightened, the bracket 40 is rotated in a horizontal plane by the arc-shaped long hole 42 in FIG.
Thus, the mark 45 provided on both side portions 40A of the bracket 40 and the mark 47 provided on the pair of left and right horizontal extending portions 23B of the third mounting member 23 are aligned. Further, the winding shaft 1 is lifted to the space 4 above the ceiling by a lifting means such as a chain block, and both ends of the winding shaft 1 in the axial direction are rotatably held at predetermined positions of the left and right brackets 5.

After that, of the members constituting the mounting body 20, the removed member is mounted, and the mounting body 2 is removed.
Reassemble 0.

When the above operation is completed, the bracket 40 holding the two rollers 41 is
The marks 45 provided on both side portions 40A of the mounting member 20 match the marks 47 provided on the pair of horizontal extending portions 23B of the third mounting member 23 in accordance with the position indicated by the string 46. Since the two rollers 41 are fixed to the mounting member 23, the two rollers 41 are arranged at predetermined winding shaft support positions in the mounting body 20. For this reason, an intermediate portion in the axial direction of the winding shaft 1 is supported upward as predetermined by two rollers 41 spaced apart in the diameter direction of the winding shaft 1, and each roller 41 is in line contact with the winding shaft 1. .

For this reason, after all the work such as the construction work of the ceiling member 2 is completed, when the take-up shaft 1 is rotated and the shutter curtain 8 is fed out and taken up, the take-up shaft 1
Since the weight of the shutter curtain 8 is supported by the rollers 41 of the mounting body 20, the winding shaft 1 does not bend significantly, so that the shutter curtain 8 can be smoothly fed and wound.

The second mounting member 22 of the mounting body 20 includes:
As shown in FIG. 2, since the shutter curtain 8 is disposed on the side opposite to the side end 1 </ b> A of the take-up shaft 1 where the take-out and take-up of the shutter curtain 8 are performed, the take-up shaft 1 is rotated forward and backward. The feeding and winding of the shutter curtain 8 can be performed as predetermined.

If the height of the roller 41 is displaced from the winding shaft 1 when the mounting body 20 is reassembled as described above, the second position shown in FIG. This shift is eliminated by the long hole 31 of the mounting member 22.

As described above, the operation of supporting the intermediate portion of the winding shaft 1 in the axial direction upward with the roller 41 is performed by the winding shaft 1.
May be performed after the shutter curtain 8 is wound up (including the state in which the shutter curtain is being wound up), or may be performed before winding up.

According to the embodiment described above, the winding shaft 1
The position of the roller 41 for supporting the middle part in the axial direction is determined by a string 46 provided between the left and right brackets 5, and the string 46 is wound on the left and right brackets 5. Since the winding shaft is a member that assumes the shaft 1, the position determined by the string 46 is a position exactly corresponding to the winding shaft support position where the roller 41 is to be disposed.
For this reason, even if the surface of the building skeleton 6 to which the bracket 5 and the mounting body 20 are mounted is not flat, and thus the bracket 5 and the mounting body 20 after being mounted to the building skeleton 6 are not correctly mounted, the roller 41 can be used. The winding shaft 1 can be arranged at a position where it can be supported upward as expected.

The roller 41 has an outer surface extending in the axial direction of the winding shaft 1 and having a curved outer surface in the diametric direction of the winding shaft 1. The line contact can be realized for two rollers 41 spaced apart from the diameter of the winding shaft 1. For this reason, the weight of the winding shaft 1 and the shutter curtain 8 wound on the winding shaft 1 can be reliably supported by the rollers 41.

In this embodiment, a mark 47 is provided at a position on the third mounting member 23 corresponding to the take-up shaft support position determined by the string 46, and the mark 47 and the mark of the bracket 40 holding the roller 41. 45, the bracket 40 is connected to the third mounting member 23 so that the mark 47 clarifies the position of the bracket 40, in other words, the winding shaft support position for arranging the roller 41. The operation of disposing the roller 41 on the member 23 can be performed easily and accurately.

Further, since the winding shaft assumed member erected between the left and right brackets 5 is a lightweight and foldable string 46, the building shutter device is transported to the construction site, handled at the construction site, and the like. Becomes easier.

Next, a winding shaft support device according to each embodiment of the present invention will be described. In the winding shaft support device of each embodiment to be described below, both ends in the axial direction of the winding shaft 1 for feeding and winding the shutter curtain 8 by forward and reverse rotation are the holding members attached to the building frame 6. Is rotatably held by a bracket.

FIG. 6 is a view showing a winding shaft support device according to the first embodiment, and is similar to FIG. The attachment body 50 coupled to the building skeleton 6 has a first member 21 and a second attachment member 22 of the attachment body 20 described above, and a third attachment member 23 of the attachment body 20 that has a longer vertical direction than the third attachment member 23. 3 mounting member 53
Consists of Two rollers 6 are provided on a pair of left and right horizontal extending portions 53B of the third mounting member 53 extending toward the building frame 6 side.
1 are arranged apart from each other in the diameter direction of the winding shaft 1. The arrangement of these rollers 61 on the horizontal extending portion 53B is performed by the first swing member 7 prepared for each roller 61.
This is performed via the first and second swing members 72 and the bracket 73.

The first swinging member 71, the second swinging member 72, and the bracket 73, which are stacked in order from the bottom to the top, have the third mounting member as shown in FIG. 7, which is a sectional view taken along the line S7-S7 in FIG. It has a length that extends over a pair of left and right horizontal extension portions 53B of the body 53. In contrast to the first swinging member 71 erected and fixed to the pair of left and right horizontal extending portions 53B, the second swinging member 72 is a horizontal shaft provided at the longitudinal center of these swinging members 71, 72. The horizontal shaft 74 is mounted so as to be swingable up and down around a center 74, and has a horizontal direction orthogonal to the axial direction of the winding shaft 1 as an axial direction. In addition, the bracket 73 is attached to the second swinging member 72 by a vertical shaft 75 provided at the longitudinal center of the bracket 73 and the bracket 73.
It is attached so that it can swing around. The roller 61 is rotatably held by the bracket 73.

For this reason, the attitude of the roller 61 is
4 and a rotating direction about a vertical axis 75.

The take-up shaft 1 is lifted to the space 4 above the ceiling by a lifting means such as a chain block, and the left and right brackets 5 shown in FIG. 1 rotatably hold both ends of the take-up shaft 1 in the axial direction. When performing, at least the third mounting member 53 of the members constituting the mounting body 50 is not yet connected to the second mounting member 22. After holding both ends in the axial direction of the winding shaft 1 on the bracket 5, the third mounting member 53 is connected to the second mounting member 22 with bolts 33 and nuts 34. Figure 3 being formed
The adjustment is performed after the height position of the two rollers 61 is adjusted to be the height position corresponding to the winding shaft 1 by the long hole 31.

At this time, if there is a possibility that the center position between the two rollers 61 does not coincide with the axis position of the winding shaft 1, the hole of the first mounting member 21 shown in FIG. 2
By making at least one of the hole 7 and the hole 28 of the second attachment member 22 a long hole in the horizontal direction, the center position between the two rollers 61 coincides with the axis position of the winding shaft 1. What should I do?

When the above operation is performed, the shutter curtain 8 may be wound on the winding shaft 1, may not be wound, or may be in the middle of winding.

By performing the above operation, each roller 61
Is applied to the winding shaft 1, when there is an error in the rotation direction about the horizontal axis in the posture of the winding shaft 1, the respective rollers 61 naturally rotate about the horizontal shaft 74. Winding shaft 1
If the attitude of the take-up shaft 1 has an error in the direction of rotation about the vertical axis, each roller 61 will naturally rotate about the vertical axis 75. Thus, the posture of the winding shaft 1 is imitated.

In other words, the attitude of the rollers 61 naturally follows the attitude of the winding shaft 1 having an error, and each roller 61 comes into line contact with the winding shaft 1 as predetermined.

FIG. 8 shows a winding shaft support device according to a second embodiment. In this device, a lower plate member 81 is erected and fixed on a pair of left and right horizontal extension portions 53B of the third attachment member 53, and the positions of the pair of left and right horizontal extension portions 53B are matched on the lower plate member 81. A block-shaped rubber 82 is attached, and a bracket 73 is placed on an upper plate member 83 that is erected and fixed thereon, and the roller 61 is rotatably held on the bracket 73. The bracket 73 is rotatably attached to the upper plate member 83 about a vertical axis 84 at the center in the length direction.

The two rollers 61 spaced apart in the diametrical direction of the winding shaft 1 are independent of each other and have the lower plate member 81, rubber 82, upper plate member 83, and bracket 7.
3, the horizontal extension 5 of the third mounting member 53 by the vertical shaft 84;
3B.

Also in this embodiment, each roller 61
Is freely displaceable in a rotation direction about a horizontal axis due to the vertical elastic deformation of the rubber 82 and a rotation direction about the vertical axis 84, and the winding shaft 1 has a posture error in these directions. Even if there is, each roller 61 comes into line contact with the winding shaft 1 as predetermined.

According to this embodiment, the roller 61
Even if there is a slight difference between the height position of the winding shaft 1 and the height position of the winding shaft 1, this difference can be absorbed by the elastic deformation of both rubbers 82.

FIG. 9 shows a winding shaft support device according to a third embodiment. This device uses a spring 92 instead of the rubber 82 of FIG. This also achieves the same operation and effect as the device of the embodiment in FIG.

FIG. 10 shows a shaft of the winding shaft 1 which can be applied when two rollers 101 are spaced apart from each other in the diameter direction of the winding shaft 1 as in the embodiments of FIGS. 3 shows support means in the middle of the direction. In this embodiment, an endless flexible sheet member 102 is rotatably provided between two rollers 101. The upper surface portion 102A of the sheet-like member 102 has a curved shape following the lower surface of the winding shaft 1, supports the winding shaft 1 upward, and rotates together with the winding shaft 1.

According to this embodiment, the winding shaft 1 is supported by the surface of the sheet-like member 102. For this reason, the winding shaft 1 and the shutter curtain 8 wound on the winding shaft 1 can be effectively prevented from being damaged, and can be supported at an intermediate portion of the winding shaft 1 in the axial direction.

Such a support means in the middle of the take-up shaft 1 in the axial direction can be applied to all the take-up shaft support devices shown in FIGS.

FIG. 11 shows a support member for supporting an intermediate portion in the axial direction of the winding shaft 1 upward, as in the embodiment shown in FIGS. 1 to 9. This is an embodiment in the case where the roller 111 is in line contact with the shutter curtain 8 that is in use. The roller 111 has a rotation center shaft 112.
The cylindrical member 1 which is formed by extending a metal cylindrical member 114 between the two bearing members 113 disposed thereon and is a surface member of the roller 111
14 is covered with a protection member 115. The protection member 115 is made of, for example, a coating material made of a soft synthetic resin, a cloth wound around the cylindrical member 115, a tape, or the like, and has soft or elastic characteristics.

According to this embodiment, the protection member 115 effectively prevents the winding shaft 1 and the shutter curtain 8 wound around the winding shaft 1 from being damaged, while preventing the winding shaft 1 from being halfway in the axial direction. The part can be supported.

[0078]

According to the present invention, it is possible to obtain the effect that the supporting member can support the winding shaft in the middle in the axial direction as expected.

[Brief description of the drawings]

FIG. 1 is a front view showing a disaster prevention shutter device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line S2-S2 of FIG.

FIG. 3 is an exploded perspective view of the mounting body shown in FIG. 2;

FIG. 4 is a plan view of a third mounting member constituting the mounting body.

FIG. 5 is a perspective view showing an operation of laying a cord as a winding shaft assumed member on left and right brackets as holding members for holding both ends in the axial direction of the winding shaft and marking an attachment body.

FIG. 6 is a view similar to FIG. 2, illustrating a winding shaft support device according to the first embodiment of the present invention.

FIG. 7 is a sectional view taken along line S7-S7 of FIG. 6;

FIG. 8 is a view similar to FIG. 2, showing a winding shaft support device according to a second embodiment of the present invention.

FIG. 9 is a view similar to FIG. 2, illustrating a winding shaft support device according to a third embodiment of the present invention.

FIG. 10 is a cross-sectional view showing an embodiment in which an intermediate portion in the axial direction of the winding shaft is supported by a flexible sheet-like member.

FIG. 11 is a cross-sectional view illustrating an embodiment in which a protection member is provided on a surface of a roller that is a support member that supports an intermediate portion in the axial direction of a winding shaft.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Take-up shaft 5 Bracket which is a holding member 6 Building frame 8 Shutter curtain 20, 50 Attachment body 41, 61, 111 Roller 46 which is a support member String 47 which is a take-up shaft assumed member 47 Mark provided at attachment body 102 Flexible Sheet material

Claims (8)

[Claims] 1. A method for supporting, by a support member, a middle portion in the axial direction of a take-up shaft whose both ends in the axial direction are rotatably held by a holding member in order to pay out and wind up a shutter curtain, wherein Between the holding member before holding the shaft, a winding shaft assumed member assuming this winding shaft is erected, and thereafter, by the supporting member at the axial middle part which is revealed by the winding shaft assumed member. A method of supporting a take-up shaft for a building shutter device, comprising arranging the support member at a take-up shaft support position. 2. The method according to claim 1, wherein the holding member is attached to a building frame, and the supporting member is attached to a mounting member coupled to the building frame. After the at least a part of the mounting body is attached to the building frame, the winding shaft support which is determined by the winding shaft assumed member by laying the winding shaft assumed member between the holding members. A mark is provided at a position of the mounting body corresponding to a position, and the support member is mounted at a position corresponding to the mark on the mounting body, a winding shaft supporting method for a shutter device for a building. 3. A winding shaft for a building shutter device according to claim 1, wherein said winding shaft assumed member is a string-shaped member. Support method. 4. The winding shaft supporting method for a shutter device for a building according to claim 1, wherein the supporting member has an outer surface extending in an axial direction of the winding shaft. A method for supporting a take-up shaft of a shutter device for buildings. 5. The building shutter device according to claim 4, wherein a plurality of the support members are spaced apart in a diameter direction of the winding shaft. Winding shaft support method. 6. A device for supporting, by a support member, a middle portion in the axial direction of a winding shaft, in which both ends in the axial direction are rotatably held by holding members attached to a building frame for feeding and winding the shutter curtain. A winding shaft of the shutter device for a building, wherein the support member is displaceably attached to a mounting body coupled to the building frame so as to have a posture corresponding to the winding shaft. Support device. 7. The shutter device according to claim 6, wherein the support member includes a plurality of support members spaced apart in a diameter direction of the take-up shaft. Winding shaft support device. 8. The winding shaft support device for a building shutter device according to claim 7, wherein the plurality of support members have outer surfaces extending in the axial direction of the winding shaft, and are disposed between the support members. And a flexible sheet-like member that is in surface contact with the winding shaft is provided on the winding shaft supporting device for a building shutter device.