Sheet type shutter device

Abstract

To urge the rotation of a guide body to the movement of a shutter curtain well when a guide body 17 is provided so as not to change the take-in angle to a guide rail 3 of the sheet type shutter curtain 2 for opening / closing an opening part such as a doorway of a building.SOLUTION: A mounting groove 17eb for mounting a winding trunk section 17e to a wheel section 17c is formed in an outer peripheral surface section 17ea of the winding trunk section 17e, which is the surface of a guide body 17, a scratch-proof sheet material 18 is provided on the outer periphery of the mounting groove to form unevenness serving as a resistance imparting means, and thus the guide body rotates well following the movement of a shutter curtain 2 to prevent the shutter curtain from being scratched.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to the technical field of a sheet-type shutter device that can be installed in an opening such as an entrance or exit of a building so as to be able to be opened and closed freely. [Background technology]

[0002] Generally, among the shutter devices installed to open and close openings such as entrances to buildings, there is known a type in which the shutter curtain is made of a sheet and wound around a winding body (winding drum, winding wheel) provided in the ceiling (above the opening) in order to speed up the opening and closing operation of the shutter curtain. In such sheet-type shutter devices, the shutter curtain is made of a single sheet material, which impairs the insulation (heat retention) properties and reduces the air conditioning effect. It has been proposed to form a shutter curtain by connecting a pair of front and back sheet materials together by gluing, sewing, fusing (heat fusing, high-frequency fusing, etc.) with a gap between the top and bottom, so that multiple cylindrical bag-shaped insulating spaces are arranged side by side with connecting parts between them, and by filling these insulating spaces with insulating material, a structure has been proposed that gives the sheet-type shutter curtain insulating properties (see, for example, Patent Documents 1 and 2). However, if the shutter curtain is filled with a heat insulating material, the shutter curtain will be thick, and when such a thick shutter curtain is wound on the winding body in a fully open state, there will be a large difference in the winding diameter of the shutter curtain on the winding body between when it is fully opened and when it is unwound in a fully closed state. As a result, at the swallowing section where the shutter curtain unwound from the winding body is swallowed into the upper edge of the guide rail, the swallowing angle of the part where the shutter curtain is swallowed into the guide rail, that is, the angle between the guide rail and the shutter curtain from the guide rail to the winding body, becomes smaller as the winding diameter of the shutter curtain relative to the winding body becomes smaller. In other words, the folding state of the shutter curtain at the swallowing section changes from a state close to a straight line to a direction in which the folding becomes larger, and there is a risk that the shutter curtain will not be smoothly swallowed into the guide rail. Therefore, it has been proposed to provide a guide roller at the intake section so that the intake angle of the shutter curtain into the guide rail remains constant regardless of changes in the angle at which the shutter curtain is unwound from the winding body (see, for example, Patent Document 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 58-141090 [Patent Document 2] Utility Model Registration No. 2601831 [Patent Document 3] Japanese Patent Application Publication No. 11-280357 Summary of the Invention [Problem to be solved by the invention]

[0004] In the case where the above-mentioned guide roller is provided, the guide roller is rotatably supported via a bearing in order to promote the rotation of the guide roller following the contact movement of the shutter curtain. However, even if the guide roller is configured in this manner so that it can rotate freely via bearings, the rotation of the guide roller is caused by the sliding resistance of the shutter curtain against the guide roller as it opens and closes.As a result, for example, when the shutter curtain begins to move at high speed, the rotation of the guide roller cannot keep up with the high speed movement of the shutter curtain, and the shutter curtain moves in a sliding manner over the surface of the guide roller, making the surface of the shutter curtain more susceptible to scratches, and these are the problems that the present invention aims to solve. [Means for solving the problem]

[0005] The present invention was created in consideration of the above-mentioned actual situation and with the aim of solving these problems. The invention of claim 1 is a sheet-type shutter device comprising a sheet-type shutter curtain installed to open and close openings such as entrances and exits of buildings, a winding body journaled on left and right bracket portions to roll up the shutter curtain, and a guide rail to guide the opening and closing of the shutter curtain, wherein a guide body is provided at a swallowing portion where the shutter curtain unwound from the winding body is swallowed into the upper edge of the guide rail, and which rotates in response to the abutting movement of the shutter curtain unwound from the winding body to guide the shutter curtain to the guide rail, and the outer peripheral surface of the guide body is provided with a resistance imparting means for imparting a sliding resistance to encourage the rotation of the guide body in response to the abutting movement of the shutter curtain. The invention of claim 2 is the sheet-type shutter device according to claim 1, characterized in that the resistance applying means is configured by making the outer circumferential surface of the guide body uneven. The invention of claim 3 is a sheet-type shutter device as described in claim 2, characterized in that the guide body is configured with a rotating shaft that is supported freely rotatably on the left and right bracket portions via bearings, and a cylindrical winding body that is arranged to rotate integrally with the rotating shaft, and the resistance applying means is configured by forming the outer surface portion of the winding body into an uneven shape. The invention of claim 4 is a sheet-type shutter device as described in claim 3, characterized in that the winding body is attached via a fastener to the outer edge of a wheel material which is fixed to the rotating shaft with a left-right gap, and a concave-groove-shaped attachment groove is formed on the outer peripheral surface of the winding body for attaching the winding body using the fastener without the head of the fastener protruding from the outer peripheral surface, and the unevenness for constituting the resistance applying means is configured by providing an attachment groove on the outer peripheral surface. The invention of claim 5 is a sheet-type shutter device as described in claim 4, characterized in that a flexible anti-scratch sheet material is attached to the outer surface of the winding body, and the resistance-providing means is constituted by the unevenness of the anti-scratch sheet material that is attached in a state that follows the unevenness of the outer surface and the mounting groove portion. The invention of claim 6 is a sheet-type shutter device as described in claim 5, characterized in that the winding body is provided with a second recessed mounting groove portion for mounting an edge portion of the anti-scratch sheet material to the winding body, separate from the mounting groove portion described in claim 4, and the resistance providing means further includes unevenness of the anti-scratch sheet material that is exteriorly fitted in a state that fits along the second mounting groove portion. Effect of the Invention

[0006] By adopting the invention of claim 1, a guide body is provided that abuts against the sheet-type shutter curtain unwound from the winding body and guides it into the upper edge of the guide rail when it is swallowed into the guide rail, allowing the shutter curtain to be smoothly swallowed into the guide rail.As a result, the guide body is provided with a resistance-applying means on its outer surface, and as a result, even if the shutter curtain moves in contact with it at high speed, the guide body is encouraged to rotate in a manner that closely follows this, preventing the shutter curtain from sliding against the guide body and causing abrasions. According to the invention as defined in claim 2, the resistance applying means is constituted by the unevenness formed on the outer circumferential surface of the guide body, thereby simplifying the structure. By adopting the invention of claim 3, the guide body is provided with a cylindrical winding trunk, and the resistance applying means is formed by forming the outer circumferential surface of the winding trunk into an uneven shape. As a result, the resistance applying means can be configured by effectively utilizing the winding trunk required as the guide body. By making use of the invention as claimed in claim 4, an attachment groove is formed in the winding trunk so that when the winding trunk is attached to the outer peripheral edge of the wheel material fixed to the rotating shaft via a fastener, the head of the fastener does not protrude from the outer peripheral surface of the winding trunk.By forming the attachment groove, protrusions and recesses for constituting the resistance applying means are formed, thereby enabling dual use and simplifying the structure without the need to form dedicated protrusions and recesses. By adopting the invention of claim 5, a scratch-resistant sheet material is provided on the winding body, which is wrapped around the outer circumferential surface and the mounting groove, and the unevenness of the scratch-resistant sheet material functions as a resistance-imparting means, thereby enabling the use of multiple components and further simplifying the structure. By adopting the invention of claim 6, a second mounting groove portion is further provided on the winding body portion for mounting the edge portion of the anti-scratch sheet material, and the resistance providing means further includes the unevenness of the anti-scratch sheet material that is attached to the second mounting groove portion, thereby enabling the exertion of a higher resistance providing function. [Brief description of the drawings]

[0007] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] 13(A) and 13(B) are a front view and a front view of a main part of a shutter curtain. [Figure 6] 1A and 1B are enlarged cross-sectional side views showing the shutter curtain in a relaxed and tensioned state. [Figure 7] FIG. 2 is a cross-sectional side view of the swallowing site. [Figure 8] 13A and 13B are a front view and a side view of the guide body. [Figure 9] 1A and 1B are a cross-sectional side view and a cross-sectional side view of a main part of a hoisting body, respectively, showing the main part in an exploded state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a sheet-type shutter device that is installed to separate an opening E, such as an entrance or exit of a building, such as a building or a factory, into front and rear (indoor and outdoor), and the shutter device 1 is configured using various members and devices, such as a sheet-type shutter curtain 2, guide rails 3 that are provided on the left and right sides of the opening E to guide the opening and closing movement of the shutter curtain 2 up and down, a shutter case 4 that is provided on the ceiling above the opening E, a winding body (winding drum, winding wheel) 5 that is rotatably provided on bracket parts 4a at both left and right ends that constitute the shutter case 4 and on which the shutter curtain 2 is wound in a spiral shape, and an electric opening and closing machine 6 that is linked via an endless transmission chain 6a to rotate the winding body 5 forward and backward, all of which are conventional.

[0009] The shutter curtain 2 is formed by connecting first, second and third sheet materials 7, 8 and 9, which have a core made of a heat-resistant and flame-retardant resin material, such as a sheet material (woven fabric or nonwoven fabric) formed by braiding polyester resin fibers, and are made of a flexible cloth material (drawing cloth) with a heat-fusible resin material, such as polyvinyl chloride, bonded to the surface of the core material.

[0010] Specifically, the shutter curtain 2 is formed by connecting the first and second sheet materials 7, 8 arranged at the front and back with an appropriate distance between them, so that a cylindrical first insulation space X is formed in a vertically continuous state with the first connecting portion 10 sandwiched between them, and further by connecting a third sheet material 9 to the second sheet material 8 at the upper and lower first insulation space X portions sandwiching the first connecting portion 10, so that the third sheet material 9 straddles the first connecting portion 10, so that a cylindrical second insulation space Y is formed in a vertically continuous state with the second connecting portion 11 sandwiched between the upper and lower portions sandwiching the first connecting portion 10 between them. Incidentally, in this embodiment, the second connecting portions 11 are provided in two locations on the second sheet material 8 constituting one first insulation space X, with gaps above and below. This is because the upper and lower end edges of each third sheet material 9 are connected to the second sheet material 8. If the third sheet material 9 is a long, continuous sheet material like the first sheet material 7, the second connecting portion 11 for connecting the third sheet material 9 to the second sheet material 8 is applied to the second sheet material 8 in a state in which the third sheet material 9 is continuous, so that only one connecting portion 11 is required in each second insulation space Y, rather than two as in the above embodiment.

[0011] The first and second insulating spaces X and Y thus configured are fitted with thick plate-like first and second insulating materials 12 and 13, the upper and lower ends of which are inserted and fitted so as to overlap each other front to back, thereby ensuring high insulating properties. At the lower edge of the shutter curtain 2 configured in this manner, a cylindrical bottom portion 14 is formed also from sheet material, and a weight 14a is inserted into the bottom portion 14, so that the shutter curtain 2 hangs down flush. Meanwhile, end sheet materials 15 that are fitted into the guide rails 3 so as to be freely movable up and down and guide the opening and closing of the shutter curtain 2 are connected to both left and right end edges of the shutter curtain 2 via third connecting parts 16. The first and second heat insulating spaces X, Y are sealed on the left and right by the left and right third connecting parts 16, and by configuring them in this manner, each of the first and second heat insulating spaces X, Y is a space that is sealed on the top, bottom, left and right sides.

[0012] The shutter curtain 2 configured in this manner has both left and right end edges sealed, and the first and second insulating spaces X, Y in which the first and second insulating materials 12, 13 are enclosed overlap each other alternately front to back in the vertical direction. The upper end edge of the shutter curtain 2 is connected to the winding body 5 and is wound around the winding body 5. In this case, the upper end edge is connected to the winding body 5 so that the shutter curtain 2 is wound with the first insulating space X located on the inner periphery and the second insulating space Y located on the outer periphery.

[0013] The shutter curtain 2 as constructed above has both left and right edge portions thereof unwound from the winding body 5 and swallowed into the upper edge portion of the guide rail 3, and a roller-shaped guide body 17 is freely rotatably provided at the swallowing portion Z to guide the shutter curtain 2 into the guide rail 3. The guide body 17 is composed of a rotating shaft 17b that is rotatably supported via bearings 17a on the left and right bracket portions 4a of the shutter case 4, a wheel portion 17c that is fixed to the rotating shaft 17b with a left-right gap remaining, and a cylindrical winding body portion 17e that is fastened to the outer peripheral surface of the wheel portion 17c via fasteners (screws, bolts, etc.) 17d, and the winding body portion 17e is wide and has a left-right width that is approximately the same as that of the winding body 5. The shutter curtain 2 unwound from the winding body 5 is configured so that the part that abuts against the outer peripheral surface of the winding body 17e from above over almost its entire width is swallowed without any change in the swallowing angle relative to the upper edge of the guide rail 2.

[0014] The winding trunk portion 17e is configured to include an outer peripheral surface portion 17ea having an arcuate surface shape, and a mounting groove portion 17eb having a long concave groove shape that is long in the left-right direction so that the fastener 17d can be fastened to the wheel portion 17c of the winding trunk portion 17e without the head 17da of the fastener 17d protruding from the outer peripheral surface portion 17ea. Multiple mounting groove portions 17eb are formed in the circumferential direction of the outer peripheral surface portion 17ea, and by being configured in this manner, unevenness is formed on the surface of the winding trunk portion 17e with the boundary portion between the mounting groove portion 17eb and the outer peripheral surface portion 17ea as a corner, thereby constituting the resistance applying means of the present invention.

[0015] Moreover, in this case, a one-piece anti-scratch sheet material 18 made of the same material as the sheet materials 7, 8, and 9 is fitted over the surface of the winding drum 17e. Specifically, the winding drum 17e is formed with a second mounting groove 17ec different from the mounting groove (first mounting groove) 17eb provided for mounting the winding drum 17e to the wheel portion 17c as described above, and both end edges in the circumferential direction of the anti-scratch sheet material 18 are attached to the second mounting groove 17ec. The formation of the first and second mounting grooves 17eb, 17ec forms a resistance applying means on the winding drum 17e by the unevenness of these grooves.

[0016] In this case, the scratch-resistant sheet material 18 is wrapped around the outer circumferential surface 17ea of ​​the winding trunk 17e, with one end 18a attached to the groove bottom 17ed of the second mounting groove 17ec via double-sided adhesive tape 19, and the other end 18b is attached to the upper surface of the one end 18a via double-sided adhesive tape 19.In this embodiment, however, the scratch-resistant sheet material 18 is fastened using a fastener 20 to ensure that both ends 18a, 18b are attached securely.Since the scratch-resistant sheet material 18 thus wrapped around the winding trunk 17e is flexible, it is wrapped in a tensile state along the unevenness that forms the corners of the boundaries between the outer circumferential surface 17ea of ​​the winding trunk 17e and the first and second mounting grooves 17eb, 17ec, leaving the unevenness therein, thereby constituting the resistance-providing means of this embodiment.

[0017] In the embodiment of the present invention configured as described above, when the sheet-type shutter curtain 2 unwound from the winding body 5 is swallowed into the upper edge of the guide rail 3, the shutter curtain 2 is guided to the guide rail 3 in a state of contacting the surface of the guide body 17 arranged at the swallowing portion Z. As a result, the shutter curtain 2 is thick-walled with the first and second insulating space portions X and Y into which the first and second insulating materials 12 and 13 are inserted, and even if the angle at which the shutter curtain 2 is unwound from the winding body 5 changes significantly as it moves from the fully open state to the fully closed state, it is unwound via the guide body 17 and does not change, so that the shutter curtain can be smoothly swallowed into the guide rail 3, and the guide body 17 is provided with a resistance applying means on its outer circumferential surface. Therefore, even if the shutter curtain 2 moves in contact with the guide body 17 at a high speed, the guide body 17 is encouraged to rotate in a manner that closely follows the movement of the shutter curtain 2, and it is possible to prevent the shutter curtain 2 from sliding against the guide body 17 and being scratched.

[0018] Moreover, in this case, the resistance applying means is constituted by the unevenness formed on the surface of guide body 17, which simplifies the structure. In this case, guide body 17 is provided with a cylindrical winding trunk 17e, and the resistance applying means is constituted by forming the outer peripheral surface 17ea of ​​winding trunk 17e into an uneven shape. As a result, the resistance applying means can be constituted by effectively utilizing winding trunk 17e, which is necessary for guide body 17. In this device, when the winding trunk 17e is attached to the outer peripheral edge of the wheel material 17c fixed to the rotating shaft 17b via a fastener 17d, an attachment groove 17eb is formed in the winding trunk 17e so that the head 17da of the fastener 17d does not protrude from the outer peripheral surface 17ea of ​​the winding trunk 17e, and the attachment groove 17eb becomes a recess and forms unevenness for constituting the resistance applying means, so that the attachment groove 17eb can be used for both purposes and the structure can be simplified without having to form dedicated unevenness.

[0019] Moreover, in this device, a flexible anti-scratch sheet material 18 is attached to the outer peripheral surface portion 17ea of ​​the winding trunk portion 17e, and the anti-scratch sheet material 18 is attached in a taut state so as to follow the unevenness between the outer peripheral surface portion 17ea of ​​the winding trunk portion 17e and the mounting groove portion 17eb.As a result, the unevenness formed on the anti-scratch sheet material 18 functions as a resistance-imparting means, thereby enabling the use of multiple components and further simplifying the structure. Furthermore, a second mounting groove portion 17ec is provided on the winding body portion 17e for mounting both end edge portions 18a, 18b of the anti-scratch sheet material 18, and the resistance providing means further includes the unevenness of the anti-scratch sheet material 18 which is fitted over the second mounting groove portion 17ec, thereby providing a higher resistance providing function.

[0020] Of course, the present invention is not limited to the above-described embodiment, and various other shapes are possible, such as a long uneven groove formed in the left-right direction on the surface of the winding body 17e, or uneven protrusions arranged in a zigzag pattern vertically and horizontally.Furthermore, when an anti-scratch sheet material is used as an exterior covering, the present invention can also be implemented using various sheet materials, such as one in which the surface of the anti-scratch sheet material 18 is coated with a resin material with high friction resistance or one in which a resin material that gives the surface a rough texture is coated. [Industrial Applicability]

[0021] INDUSTRIAL APPLICABILITY The present invention can be used as a sheet-type shutter device that can be installed in an opening such as an entrance or exit of a building so as to be freely opened and closed. [Explanation of symbols]

[0022] 1 Shutter device 2. Shutter Curtain 3 Guide rail 4. Shutter Case 4a Bracket part 5 Winding body 7 First sheet material 8 Second sheet material 9. Third sheet material 10 First connection part 11 Second connection part 12 Primary insulation material 13 Secondary insulation 17 Guide body 17a Bearing 17b Rotation axis 17c Wheel section 17d Fasteners 17da head 17e Rolled body 17ea outer peripheral surface 17eb First mounting groove 17ec Second mounting groove 18 Anti-scratch sheet material 18a One end 18b Other end 20 Fasteners E Opening X First insulation space Y Second insulation space Z swallowing part

Claims

1. A sheet-type shutter device is provided which is provided for opening and closing an opening such as an entrance or exit of a building, a winding body which is supported by left and right brackets for winding up the shutter curtain, and a guide rail which guides the opening and closing of the shutter curtain. A guide body is provided at a take-up section where the shutter curtain unwound from the take-up body is taken up into the upper end edge of the guide rail, and the guide body rotates in response to the contact movement of the shutter curtain unwound from the take-up body to guide the shutter curtain to the guide rail; A sheet-type shutter device characterized in that a resistance applying means is provided on the outer surface portion of the guide body for applying a sliding resistance to promote rotation of the guide body in response to the abutting movement of the shutter curtain.

2. 2. The sheet-type shutter device according to claim 1, wherein the resistance applying means is configured by making the outer peripheral surface of the guide body uneven.

3. The guide body is configured to include a rotating shaft that is rotatably supported by the left and right bracket portions via bearings, and a cylindrical winding body that is provided to rotate integrally with the rotating shaft, 3. The sheet-type shutter device according to claim 2, wherein the resistance applying means is configured by forming an outer peripheral surface of the winding body into an uneven shape.

4. The winding body is attached to the outer periphery of a wheel material, which is fixed to the rotating shaft with a left-right gap, via a fastener. A groove-shaped mounting section is formed on the outer peripheral surface of the winding body so that the head of the fastener does not protrude from the outer peripheral surface of the winding body and the fastener can be used to mount the winding body with the fastener.

4. The sheet-type shutter device according to claim 3, wherein the unevenness constituting the resistance applying means is configured by providing an attachment groove portion on the outer peripheral surface portion.

5. The outer peripheral surface of the roll is covered with a flexible anti-scratch sheet material.

5. The sheet-type shutter device according to claim 4, wherein the resistance applying means is constituted by the unevenness of an anti-scratch sheet material that is applied on the exterior in a state that it fits the unevenness of the outer peripheral surface portion and the mounting groove portion.

6. In addition to the mounting groove of claim 4, the winding body is provided with a second mounting groove for mounting the edge of the scratch-proof sheet material to the winding body, 6. The sheet-type shutter device according to claim 5, wherein the resistance applying means further includes unevenness of an anti-scratch sheet material that is fitted over the second mounting groove portion.

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