Structure of opening / closing body storage section and maintenance work method for opening / closing body storage section

Abstract

To provide a structure of an opening / closing body storage section and a maintenance work method for the opening / closing body storage section, which can accommodate fitting of eaves filling and enable replacement of a winding section. [Solution] The device has a storage section (19) attached to the corner where a wall section (17) having an opening (15) and the eaves ceiling (13) intersect, an upper cover (23) that covers the storage section (19) and is embedded in the eaves ceiling (13), and a lower cover (25) that is detachable from the storage section (19) and is exposed below the eaves ceiling (13), the storage section (19) stores a winding section (47) that winds up and pays out a shutter curtain (33) that opens and closes the opening (15), and both axial ends of the winding section (47) are supported by bearings (51) provided on opposing surfaces of a pair of brackets (49) fixed to the wall section (17), and a wiring cover (53) is arranged on the opposing surface with a wiring gap and is fastened and fixed around the bearing (51) surrounding the front half side, and the wiring cover (53) is provided with a guide block (55) that contacts the opening / closing body (33) and guides it when it moves open and closed.

Description

[Technical Field]

[0001] The present invention relates to a structure of an opening / closing body storage section and a maintenance work method for an opening / closing body storage section. [Background technology]

[0002] A wiring assembly structure for an electric shutter with a built-in opening / closing mechanism is known, which allows the power supply line for the opening / closing mechanism inserted into the shutter shaft to be easily extended to the inner surface of one side of the shutter case, thereby enabling wiring work to be carried out reliably (see Patent Document 1). This wiring assembly structure for an electric shutter with a built-in switch is an electric shutter in which an switch is built into a drum installed inside the shutter case, and the power supply line of the switch is inserted through the hollow axial center of the shutter shaft that supports the drum and extends from the end of the shaft to the inside of one side of the shutter case, and is characterized in that a reinforcing base plate is face-attached to the inside of one side of the shutter case, and a shutter bearing having a semi-cylindrical support surface with an open top is fixed horizontally to the outer surface of the reinforcing base plate, and a cover plate separated by the thickness of the power supply line is installed next to the reinforcing base plate parallel to the base plate on one side, so that when the drum is installed inside the shutter case, the power supply line extending from the end of the shutter shaft is guided from the top of the open shutter bearing into the inside of the shutter case along the inside of the cover plate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 2509158 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the wiring assembly structure of conventional electric shutters with built-in opening and closing mechanisms, when the upper part of the shutter case (storage section) is embedded in the eaves ceiling, when performing maintenance on the inside of the storage section, it is necessary to expose the entire inside of the storage section, such as by removing the reinforcing board mentioned above, which creates the problem that maintenance work, such as replacing the winding drum (winding section), cannot be performed without destroying the eaves ceiling.

[0005] The present invention has been made in consideration of the above situation, and its purpose is to provide a structure for an opening / closing body storage section that can accommodate a storage section embedded in an eaves ceiling, i.e., a storage section embedded in the eaves ceiling, while allowing for replacement of the winding section, and a maintenance work method for an opening / closing body storage section. [Means for solving the problem]

[0006] Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. The structure of the opening / closing body storage section according to claim 1 of the present invention is a structure of the opening / closing body storage section having a storage section 19 attached to a corner where a wall section 17 having an opening 15 and a soffit 13 intersect, an upper cover 23 covering the storage section 19 and embedded in the soffit 13, and a lower cover 25 detachably attached to the storage section 19 and exposed below the soffit 13, The storage section 19 stores a winding section 47 that winds and unwinds the opening / closing body 33 that opens and closes the opening 15. The winding portion 47 is supported at both axial ends by bearings 51 provided on opposing surfaces 63 of a pair of brackets 49 fixed to the wall portion 17 at positions on both lateral sides of the opening 15, A wiring cover 53 is fastened and fixed to the opposing surface 63, the wiring cover 53 being disposed with a wiring gap therebetween and surrounding the front half side of the storage section 19 around the bearing 51. The wiring cover 53 is characterized in that it is provided with a guide block 55 that contacts the opening / closing body 33 and guides it during opening and closing movement.

[0007] In this structure of the opening / closing body storage section, the opening 15 is opened and closed by the opening / closing body 33 that is wound and unwound relative to the storage section 19 as the winding section 47 is rotated. Both axial ends of the winding section 47 are supported by bearings 51 provided on the opposing surfaces 63 of the pair of brackets 49. The bracket 49 is fixed to the wall 17 at positions on both lateral sides of the opening 15. A wiring cover 53 that encloses the front half side of the bearing 51 is fastened and fixed to the opposing surface 63 of the bracket 49. The wiring cover 53 is attached to the bracket 49 across a wiring gap. Electrical wires and the like can be routed in the wiring gap formed between the bracket 49 and the wiring cover 53. A guide block 55 is provided on the surface of this wiring cover 53 opposite to the bracket 49. The opening / closing body 33 comes into contact with this guide block 55, whereby the opening / closing body 33 is guided during opening / closing movement, and the winding position within the storage section 19 is regulated. The upper part of the storage section 19 is covered by an upper cover 23, and the lower part is covered by a lower cover 25. The upper part of the storage section 19 covered by the upper cover 23 is embedded in the eaves ceiling 13. Meanwhile, a lower cover 25 that covers the lower part of the storage section 19 is disposed under the eaves ceiling 13. When the lower cover 25 is removed, a maintenance opening 65 that allows access to the inside of the storage section 19 is opened. A worker can use a tool to unclamp the wiring cover 53 from the maintenance opening 65. The unclamped wiring cover 53 is C-shaped and surrounds the front half of the bearing 51. The front half of the front half refers to the side where the lower cover 25 is provided relative to the bearing 51. The wiring cover 53 can be pulled out from the maintenance opening 65 together with the guide block 55 by tilting the upper end of the wiring cover 53 diagonally so that it approaches the winding portion 47 and rotating it along the outer periphery of the winding portion 47. This removes the various components around the bearing 51 within the storage section 19 of the winding section 47, and the winding section 47, now free from any obstructions, can be lifted off the bearing 51 and pulled out through the maintenance opening 65.

[0008] The structure of the opening / closing body storage section according to claim 2 of the present invention is the structure of the opening / closing body storage section according to claim 1, The guide block 55 is characterized in that it contacts both end surfaces of the opening / closing body 33 in the lateral direction.

[0009] In the structure of this opening / closing body storage section, the guide blocks 55 contact both lateral end faces of the opening / closing body 33. The opening / closing body 33 is formed by connecting multiple slats 39 that are long in the lateral direction with their long sides connected to form a blind shape. With both end faces of the slats 39 in the opening / closing body 33 contacting the guide blocks 55, misalignment in the lateral direction, i.e., in the left-right width direction of the building opening 15, is restricted. In other words, the guide blocks 55 act as stoppers for the slats 39. In this way, the wiring cover 53, which ensures a gap between the wiring, and the guide blocks 55, which act as stoppers, are fixed together to form a single guide unit 81. The shutter curtain 33, which is an opening / closing body, also includes a blind shutter. The blind shutter has slats 39 and link portions extending from both ends of the slats. In a blind shutter, the link portions are positioned outside the slat winding width. Therefore, in a blind shutter, both end faces of the link portions extending from both ends of the slats contact guide blocks 55. The structure of the opening / closing body storage section in this blind shutter also allows the guide blocks 55 to be removed together with the wiring cover 53, so the guide blocks 55 do not get in the way and the winding portion 47 can be removed from the storage section 19.

[0010] The structure of the opening / closing body storage section according to claim 3 of the present invention is the structure of the opening / closing body storage section according to claim 1 or 2, A rear wiring cover is fixed to the opposing surface 63 across a wiring gap, and surrounds the rear half side of the bearing 51.

[0011] In this structure of the opening / closing body storage section, in addition to the wiring cover 53 surrounding the front half of the bearing 51, the rear half of the bearing 51 is also surrounded by a rear wiring cover. In this case, the entire circumferential circumference of the bearing 51 is surrounded by the two-piece wiring cover 53 and the rear wiring cover. This rear wiring cover also forms a wiring gap between itself and bracket 49. However, unlike wiring cover 53, this rear wiring cover does not need to be provided so as to be freely removable. In this structure of the opening / closing body storage section, wiring cover 53 and the rear wiring cover are arranged to surround the entire periphery of bearing 51, thereby defining a wide area of ​​wiring gap on opposing surface 63 of bracket 49.

[0012] The structure of the opening / closing body storage section according to claim 4 of the present invention is the structure of the opening / closing body storage section according to claim 1 or 2, The guide block 55 is characterized by being made of a resin material.

[0013] In this structure of the opening / closing body storage section, the opening / closing body 33 contacts the guide block 55, which is made of a resin material. More specifically, both end faces of the opening / closing body 33 contact the guide block 55. As the winding section 47 rotates, the opening / closing body 33 moves with both end faces in contact with the guide block 55. In this case, because the guide block 55 is made of a resin material, sliding noise can be suppressed compared to when the guide block 55 is made of a metal material. In addition, wear on both end faces of the opening / closing body 33 can be suppressed compared to when the guide block 55 is made of a metal material. This also increases the durability of the opening / closing body 33.

[0014] The structure of the opening / closing body storage section according to claim 5 of the present invention is the structure of the opening / closing body storage section according to claim 3, The guide block 55 is characterized by being made of a resin material.

[0015] This structure of the opening / closing body storage section has the same function as the fourth aspect.

[0016] A maintenance work method for an opening / closing body storage unit according to claim 6 of the present invention is a maintenance work method for an opening / closing body storage unit having the structure of the opening / closing body storage unit according to claim 1, Remove the lower cover 25, The wiring cover 53 is released from the maintenance opening 65 of the storage section 19 that is opened under the eaves ceiling 13, The upper end of the wiring cover 53 is tilted together with the guide block 55 in a direction approaching the winding portion 47, The wiring cover 53 is rotated along the winding portion 47 and pulled out from the maintenance opening 65 with the lower end leading.

[0017] In this maintenance work method for the opening / closing body storage section, the wiring cover 53 to which the guide block 55 is fixed is formed in a shape that surrounds the front half side of the bearing 51, i.e., a C-shape. It is preferable that the C-shape be set so that the separation distance divided in the circumferential direction is larger than the diameter of the winding section 47 when the opening / closing body 33 is not wound around it. Even when the upper cover 23 of the storage section 19 is embedded in the eaves ceiling 13, the lower cover 25 is positioned below the eaves ceiling 13. When the lower cover 25 of the storage section 19 is removed, a maintenance opening 65 is opened. This maintenance opening 65 has an opening area that allows a worker to unclip the fastening of the wiring cover 53. As a result, when the wiring cover 53 is released from the fastening, it is separated from the bracket 49 together with the guide block 55. The separated wiring cover 53 is tilted inside the storage section 19, taking advantage of its C-shape, in a direction in which its upper end approaches the winding section 47. The tilted wiring cover 53 is rotated along the winding section 47 in the space between it and the winding section 47 inside the storage section 19, and thereby becomes possible to pull out from the maintenance opening 65 with its lower end leading. When the wiring cover 53 and the guide block 55 are removed from the storage section 19, the maintenance opening 65 is no longer obstructed from the front half of the bearing 51, and the take-up part 47 can be removed from the bearing 51. Then, the take-up part 47 that has been removed from the bearing 51 can be taken out through the maintenance opening 65. When replacing the winding section 47, a new winding section 47 is inserted through the maintenance opening 65 and supported by dropping it into the bearing 51. Next, the wiring cover 53 integrated with the guide block 55 is fastened and fixed to the bracket 49. [Effects of the Invention]

[0018] According to the structure of the opening / closing body storage section of claim 1 of the present invention, it is possible to accommodate a storage section embedded in the eaves ceiling, i.e., to allow replacement of the winding section.

[0019] According to the structure of the opening / closing body storage section of claim 2 of the present invention, the guide unit can be removed at once, improving the ease of maintenance work.

[0020] According to the structure of the opening / closing body storage section of claim 3 of the present invention, a large wiring gap for safely covering the electric wires and the like can be ensured.

[0021] According to the structure of the opening / closing body storage section of claim 4 of the present invention, it is possible to improve quietness during opening and closing operations.

[0022] According to the structure of the opening / closing body storage section of claim 5 of the present invention, the same effects as those of claim 4 can be obtained.

[0023] According to the maintenance work method for the opening / closing body storage section described in claim 6 of the present invention, the maintenance opening can be opened by removing only the lower cover under the eaves ceiling, making it possible to replace the winding section using the maintenance opening while accommodating the fit of the eaves filling. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is an external perspective view of a shutter device having a structure of an opening / closing body storage section according to an embodiment of the present invention, with a portion thereof omitted. [Figure 2] FIG. 2 is a vertical cross-sectional view of the shutter device. [Figure 3] 3 is an enlarged view of a main part of the opposing surface of the bracket shown in FIG. 2. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] 10A and 10B are explanatory diagrams of a wiring cover rotation process after the fastening is released. [Figure 7] 1A is an explanatory diagram of a wiring cover tilting step, and FIG. 1B is an explanatory diagram of a wiring cover turning back step. [Figure 8] FIG. 10 is a perspective view of the main part of the storage section from which the winding section has been removed. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the exterior of a shutter device 11 having a structure of an opening / closing body storage section according to this embodiment, with a portion thereof omitted. The structure of the opening / closing body storage section according to this embodiment is suitable for use in an opening 15 (see FIG. 2) of a building having a soffit 13. The opening 15 is formed in a rectangular shape in a wall 17 that constitutes the building skeleton. A sash frame S (see FIG. 2) is attached to the opening 15. The shutter device 11 has a storage section 19. The storage section 19 is attached to an inside corner where the wall 17 having the opening 15 and the soffit 13 intersect.

[0026] The upper part of the storage section 19 is embedded in the soffit 13 from the soffit surface 21. The soffit surface 21 may be installed after the storage section 19 is attached to the wall section 17. The storage section 19 has an upper cover 23 (see Figure 2). The upper cover 23 covers the upper part of the storage section 19, and most of it is embedded in the soffit 13 except for a fixing edge 27 (see Figure 6) to which the lower cover 25 is fixed.

[0027] The storage section 19 has a lower cover 25. The lower cover 25 covers the lower part of the storage section 19. The lower cover 25 is detachable from the storage section 19 and is exposed below the eaves ceiling 13. The upper end of the lower cover 25 is fastened to a fixing edge 27 that hangs down slightly from the eaves ceiling surface 21 with screws 29 (see Figure 2).

[0028] Vertical frames 31 extend vertically and are connected to both lateral ends of the storage section 19. The vertical frames 31 are attached in pairs parallel to each other on both lateral sides of the opening 15. Guide rails 35 (see Figure 2) that guide the raising and lowering of a shutter curtain 33, which serves as an opening and closing body, are housed inside the vertical frames 31. Both lateral sides of the storage section 19 are covered by decorative side panels 37.

[0029] FIG. 2 is a vertical cross-sectional view of the shutter device 11. In this embodiment, the shutter curtain 33 is a blind shutter. In the blind shutter, each slat 39 constituting the shutter curtain 33 rotates relative to a linear connecting member 41 at the side end.

[0030] The linear connecting member 41 is formed by connecting the ends of a plurality of links 43, and the connected links 43 are formed to be rotatable with respect to each other and to be able to move relatively a predetermined distance in the connecting direction. The end of the corresponding slat 39 is connected to each link 43 by a pivot pin 45. Each of the pair of linear connecting members 41 is engaged with the guide rail 35 of the vertical frame 31 described above.

[0031] In this embodiment, each slat 39 is formed to be rotatable around a pivot pin 45 relative to the connected link 43. As a result, when the shutter curtain 33 is lowered to the bottom end of the entrance, the slats 39 can select between a closed position that closes the entrance and an open position that opens part of the entrance, and the shutter curtain 33 forms a so-called blind shutter.

[0032] The storage section 19 stores a winding section 47 that winds and unwinds the shutter curtain 33 that opens and closes the opening 15. The pair of linear connecting members 41 have their uppermost hanging links connected to the winding section 47, allowing the shutter curtain 33 to be wound and unwind.

[0033] The axial ends of the winding section 47 are supported by a pair of brackets 49 fixed to the wall section 17 at positions on both lateral sides of the opening 15. Bearings 51 are provided on opposing surfaces of the brackets 49. The brackets 49 support the axial ends of the winding section 47 by means of these bearings 51.

[0034] A wiring cover 53 is fastened and fixed to the opposing surface of bracket 49 across a wiring gap, surrounding the front half of bearing 51. Wiring cover 53 is provided with a guide block 55 that contacts shutter curtain 33.

[0035] FIG. 3 is an enlarged view of the main part of the opposing surface of the bracket 49 shown in FIG. Bearing 51 is formed from a generally U-shaped sheet metal material with an opening facing diagonally upward, and has multiple fixing pieces 57 that are fixed to bracket 49. A support shaft 59 of winding section 47 is dropped into bearing 51 from diagonally above, supporting support shaft 59. A drive motor is housed in winding section 47. A wiring cable 61 (see Figure 3), in which power lines, signal lines, etc. are bundled, is connected to the drive motor.

[0036] The wiring cable 61 is pulled out from the end face of the support shaft 59. The pulled out wiring cable 61 is routed in the routing gap formed between the bracket 49 and the wiring cover 53. The wiring cable 61 branches into multiple cables, such as signal cables and power cables, passes through the routing gap, and is then led out of the routing gap at a desired position in the wiring cover 53. The wiring cover 53 covers the wiring cable 61 from the shutter curtain 33 wound around the winding section 47. This prevents the slats 39 and the pivot pin 45 from coming into contact with the wiring cable 61, thereby preventing breakage and deterioration of the wiring cable 61. As shown in FIG. 3 , for example, the upwardly extending wiring cable 61 of the led out signal cables, power cables, etc. is inserted into the building side, and the downwardly extending wiring cable 61 is inserted into the vertical frame 31. In addition to the wiring cable 61, a manual switching wire 62 is led out from the winding portion 47, led out through the wiring gap in the same manner as above, and inserted into the inside of the vertical frame 31.

[0037] The wiring cover 53 is fastened and fixed to the opposing surface 63 of the bracket 49 by screws 29, which are fastening members, at two locations, for example, at the top and bottom. The screws 29 that fasten the wiring cover 53 can be released through a maintenance opening 65 (see FIG. 6) that is opened when the lower cover 25 is removed.

[0038] A guide block 55 is attached to the surface of the wiring cover 53 opposite the bracket 49. The guide block 55 contacts both lateral end surfaces of the shutter curtain 33. In other words, the shutter curtain 33 is guided in the width direction between the opposing guide blocks 55 on the left and right to open and close. If the shutter curtain 33 is a blind shutter, the end face of the pivot pin 45 contacts the guide block 55. The guide block 55 is made of a resin material. For example, Duracon, a polyplastic, is preferably used as the resin material.

[0039] Although not shown in the drawings, the structure of the opening / closing body storage section may be such that a rear wiring cover is fixed to the opposing surface 63 of the bracket 49, surrounding the rear half side of the bearing 51 across a wiring gap. In this case, the rear wiring cover is made approximately C-shaped like the wiring cover 53, and forms a ring together with the wiring cover 53, and is disposed around the bearing 51, forming a wiring gap.

[0040] FIG. 4 is an exploded perspective view of the storage section 19. As shown in FIG. The storage section 19 is fixed to the wall 17 above the opening 15. The storage section 19 has a pair of support plates 67 fixed to the wall 17. The support plates 67 are formed in the shape of vertically long strips and are arranged parallel to both sides of the wall 17 above the opening 15. A plurality of bracket locking claws 69, for example, two at the top and bottom, are formed on the surface of each support plate 67, protruding upward. An upper frame 71 that is elongated in the horizontal direction of the opening 15 abuts on the upper ends of the pair of left and right support plates 67 and is fixed to the wall 17.

[0041] A pair of left and right brackets 49 are fixed to each support plate 67. The brackets 49 are formed from rectangular sheet metal with flanges bent from each side toward the opposite surface. The brackets 49 have locking portions 73 cut out from the rear flange, and these locking portions 73 lock onto bracket locking claws 69 of the support plate 67 to support the brackets on the wall 17. The pair of left and right brackets 49 are connected at their lower, rear sides by a bottom frame 75, which is a long lintel extending laterally from the opening 15. The bottom frame 75 is fixed to the wall 17. Decorative side panels 37 (see also Figure 1) that cover the brackets 49 are attached to the outside of the pair of left and right brackets 49. The storage section 19 has a frame body consisting of the support plate 67, upper frame 71, brackets 49, and bottom frame 75 as its outer shell.

[0042] The frame portion of the storage section 19 is covered by an upper cover 23 and a lower cover 25. The upper cover 23 and the lower cover 25 are supported by a pair of left and right brackets 49. The upper cover 23 covers the top surface of the storage section 19 and the upper front surface of the storage section 19. The upper cover 23 is removably fixed to the upper frame 71 and the brackets 49 by fastening members (not shown). The fastening members may be, for example, screws 29, bolts, or the like. To ensure waterproofing of the storage section 19, the gaps between the edge (vertical edge portion) of the decorative side panel 37 that contacts the wall section 17 and the upper edge of the upper cover 23 and the wall section 17 are filled with waterproof caulking.

[0043] The lower cover 25 covers the underside of the storage section 19 from the entrance / exit slit through which the shutter curtain 33 enters and exits to the lower front edge of the storage section 19, as well as the lower front portion of the storage section 19. The lower cover 25 is removably fixed to the bracket 49 with fastening members. The fixed edge 27 of the upper cover 23 and the upper edge of the lower cover 25 are removably fixed to a fastening member 77 (see FIG. 3) provided on the back by fastening members (screws 29) that are screwed into the fastening member 77 from the front side of the storage section 19. The screws 29 that are screwed into the fastening member 77 fasten the upper cover 23 and the lower cover 25 together, so that by removing the screws 29, it is possible to remove only the lower cover 25, leaving the upper cover 23. The lower cover 25 has a plurality of screw holes 79 drilled at predetermined intervals in the horizontal direction for inserting the screws 29.

[0044] The storage section 19 accommodates the winding section 47 therein. The winding section 47 has support shafts 59 at both ends supported by bearings 51 provided on the opposing surfaces 63 of a pair of left and right brackets 49. The bearings 51 have an opening that allows the support shaft 59 to be attached and detached from diagonally above. During maintenance after the storage section 19 has been installed, the shutter curtain 33 is removed, and the support shaft 59 is lifted upward through this opening, allowing it to be removed.

[0045] The leading end (upper end) of the shutter curtain 33 in the winding direction is connected to the winding unit 47. The winding unit 47 is rotated by an opening / closing device (drive motor) provided inside the support shaft 59, thereby enabling the shutter curtain 33 to be unwound and wound through the entrance / exit slit of the storage unit 19. The shutter curtain 33 is positioned below the entrance / exit slit, and its both side edges are guided by a pair of parallel guide rails 35 provided in the up / down direction on the left and right of the opening 15, allowing it to move up and down through the opening 15. In this way, the shutter device 11 is able to open and close the opening 15.

[0046] FIG. 5 is an exploded perspective view of the guide unit 81. As shown in FIG. The wiring cover 53 and the guide block 55 constitute a guide unit 81. The wiring cover 53 is formed in a C-shape by cutting out a semicircular (half-moon) shape on one side of a substantially rectangular plate, and has a rectangular fixing plate portion 83 that is long vertically at its vertical portion, which is the central base. Through holes 85 are drilled at the top and bottom ends of the fixing plate portion 83 for fixing the wiring cover 53 to the bracket 49. Two boss holes 87 are drilled, one above the other, between these two through holes 85. A guide block fixing groove 89 is formed between the two boss holes 87. Furthermore, two rectangular holes 91 are drilled, one above the other, on the inner circumferential side of the central base opposite the fixing plate portion 83.

[0047] Meanwhile, two engaging claws 93 that engage with the square holes 91 protrude from the block contact surface of the guide block 55. Also, two positioning bosses 95 that fit into the boss holes 87 and screw insertion holes 97 through which screws that screw into the guide block fixing grooves 89 pass are drilled on the block contact surface.

[0048] The guide block 55 is fixed integrally with the wiring cover 53 by inserting the bosses 95 into the boss holes 87, engaging the engaging claws 93 with the square holes 91, and threading screws (not shown) passed through the screw insertion holes 97 into the guide block fixing grooves 89, thereby bringing the block contact surfaces into close contact with each other. The guide unit 81, in which the wiring cover 53 and the guide block 55 are integrated, can be attached to and detached from the bracket 49 as a unit without being separated, and without the multiple bosses 95 and multiple engaging claws 93 wobbling against each other.

[0049] The wiring cover 53 has bent pieces 99 at each end of the C-shape that abut against the opposing surface 63 of the bracket 49. Meanwhile, the bracket 49 has two upper and lower cover fixing pieces 101 (see FIG. 6 ) formed at positions spaced apart from the opposing surface 63 by the wiring gap. That is, the cover fixing pieces 101 are folded back in a U-shape at the edge of the bracket 49 so as to be parallel to the opposing surface 63, and are provided at a predetermined distance from the opposing surface 63. The distance between the cover fixing pieces 101 and the opposing surface 63 is set equal to the length of the bent pieces 99 of the wiring cover 53. The cover fixing pieces 101 are each provided with a screw fixing hole 103 (see FIG. 6 ) into which a screw 29 passing through the through hole 85 of the fixing plate portion 83 is threaded. Two boss holes 87 are also formed in the cover fixing piece 101.

[0050] In the guide unit 81 in which the guide block 55 is fixed to the wiring cover 53, the screws 29 passing through the through holes 85 of the wiring cover 53 are fastened to the screw fixing holes 103 of the cover fixing pieces 101 of the bracket 49, so that the central base is fixed to the cover fixing pieces 101 and the tips of the bent pieces 99 abut against the opposing surfaces 63 of the bracket 49. This makes it possible to form a wiring gap between the wiring cover 53 and the bracket 49.

[0051] Next, a procedure for removing the winding portion 47 in the maintenance work method for the opening / closing body housing portion will be described.

[0052] FIG. 6 is an explanatory diagram of the process of rotating the wiring cover after the fastening is released. In the maintenance work method for the opening / closing body storage section according to this embodiment, first, the lower cover 25 is removed. After the lower cover 25 is removed from the storage section 19, a horizontally long maintenance opening 65 opens along the upper cover 23.

[0053] Using a tool, the worker uses the maintenance opening 65 to untighten the screws 29 (see FIG. 3) fixed to the cover fixing pieces 101 of the bracket 49 located on the rear front side of the upper cover 23. The worker then rotates the released wiring cover 53 clockwise in FIG. 6 around the winding portion 47 in the storage section 19, for example, by approximately 45°.

[0054] FIG. 7(a) is an explanatory diagram of the wire cover tilting step, and FIG. 7(b) is an explanatory diagram of the wire cover turning back step. As shown in FIG. 7( a), the rotated wiring cover 53 tilts the guide block 55, i.e., the guide unit 81, in a direction such that the fixing plate 83 located at the upper end approaches the winding section 47. As a result, the C-shaped wiring cover 53, which is not formed to completely surround the winding section 47, moves from a position where its two separated ends straddle the winding section 47 to a position in the space between the winding section 47 and the upper cover 23 within the storage section 19. Next, as shown in FIG. 7( b), the wiring cover 53 is rotated in an upside-down direction so that the bracket-facing surface of the wiring cover 53 faces forward, and the wiring cover 53 is pulled out of the maintenance opening 65 along the winding section 47, starting with the lower end. The thickness of the guide unit 81, in which the wiring cover 53 and the guide block 55 are integrated, is smaller than the gap between the winding section 47 and the inner surface of the upper cover 23. Furthermore, the guide unit 81 can pass through the maintenance opening 65 when the lower cover 25 is removed, allowing it to be pulled out without interference.

[0055] FIG. 8 is a perspective view of the main part of the storage section 19 from which the winding section 47 has been removed. With the guide unit 81 (wiring cover 53 and guide block 55) removed from the storage section 19, the take-up section 47 can be removed through the maintenance opening 65. That is, the guide units 81 that were arranged around both ends of the take-up section 47 are removed, and the support shafts 59 at both ends of the take-up section 47 can be easily attached and detached to and from the bearings 51. When replacing the take-up section 47, a new take-up section 47 is inserted through the maintenance opening 65, and the support shafts 59 are supported by the bearings 51, completing the replacement work.

[0056] Next, the operation of the above-described configuration will be described.

[0057] In the structure of the opening / closing body storage section according to this embodiment, the opening 15 is opened and closed by the shutter curtain 33 that is wound and unwound relative to the storage section 19 as the winding section 47 is rotated. Both axial ends of the winding section 47 are supported by bearings 51 provided on the opposing surfaces 63 of the pair of brackets 49.

[0058] The bracket 49 is fixed to the wall 17 at positions on both lateral sides of the opening 15. A wiring cover 53 that surrounds the front half of the bearing 51 inside the storage section 19 is fastened and fixed to an opposing surface 63 of the bracket 49. The wiring cover 53 is attached to the bracket 49 across a wiring gap. Electrical wires and the like can be routed in the wiring gap formed between the bracket 49 and the wiring cover 53.

[0059] A guide block 55 is provided on the surface of the wiring cover 53 opposite to the bracket 49. The shutter curtain 33 comes into contact with this guide block 55, whereby the shutter curtain 33 is guided in its up and down movement and its winding position is restricted.

[0060] The upper part of the storage section 19 is covered by an upper cover 23, and the lower part is covered by a lower cover 25. The upper part of the storage section 19 covered by the upper cover 23 is embedded in the eaves ceiling 13.

[0061] Meanwhile, a lower cover 25 that covers the lower part of the storage section 19 is disposed under the eaves ceiling 13. When the lower cover 25 is removed, a maintenance opening 65 that allows access to the inside of the storage section 19 is opened.

[0062] A worker can use a tool to release the fastening of the wiring cover 53 through the maintenance opening 65. The released wiring cover 53 is C-shaped and surrounds the front half of the bearing 51. The front of the front half refers to the side where the lower cover 25 is provided. By rotating the wiring cover 53 along the outer periphery of the winding section 47 and tilting it diagonally so that the upper end approaches the winding section 47, the wiring cover 53 can be turned in the space between it and the winding section 47 in the storage section 19 and pulled out from the maintenance opening 65 together with the guide block 55.

[0063] As a result, the winding portion 47 is free from the obstacle and can be lifted up from the bearing 51 and pulled out through the maintenance opening 65.

[0064] Furthermore, in the structure of this opening / closing body storage section, the guide blocks 55 contact both lateral end faces of the shutter curtain 33. The shutter curtain 33 is formed by connecting multiple slats 39 that are long in the lateral direction with their long sides connected to form a bamboo blind shape. The shutter curtain 33 is restricted from shifting in the lateral direction by having both end faces of the slats 39 contact the guide blocks 55. In other words, the guide blocks 55 act as stoppers for the slats 39. In this way, the wiring cover 53, which ensures a gap between the wiring, and the guide blocks 55, which prevent the slats from shifting (moving), are fixed together to form a single guide unit 81.

[0065] The shutter curtain 33, which is an opening / closing body, also includes a blind shutter. The blind shutter has slats 39 and link portions extending from both ends of the slats. In a blind shutter, the link portions are positioned outside the slat winding width. Therefore, in a blind shutter, both end faces of the link portions extending from both ends of the slats contact the guide block 55. The structure of the opening / closing body storage section in this blind shutter also allows the guide block 55 to be removed together with the wiring cover 53, so the guide block 55 does not get in the way and the winding portion 47 can be removed from the storage section 19. As a result, the guide unit 81 can be removed all at once, improving maintenance workability.

[0066] Furthermore, in this structure of the opening / closing body storage section, in addition to wiring cover 53 surrounding the front half of bearing 51, a rear wiring cover may surround the rear half of bearing 51. In this case, like wiring cover 53, the rear wiring cover is roughly C-shaped and forms a ring with wiring cover 53, i.e., a two-part cover surrounding the entire circumference of bearing 51, and these are arranged around bearing 51 to form a wiring gap.

[0067] This rear wiring cover also forms a wiring gap between itself and the bracket 49. However, unlike the wiring cover 53, this rear wiring cover does not need to be provided so as to be freely removable. In this structure of the opening / closing body storage section, the wiring cover 53 and the rear wiring cover are arranged to surround the entire periphery of the bearing 51, thereby defining a wiring gap of a wide area on the opposing surface 63 of the bracket 49. As a result, a large wiring gap can be secured to safely cover the electric wires.

[0068] In this structure of the opening / closing body storage section, the shutter curtain 33 contacts the guide block 55, which is made of a resin material. More specifically, both end faces of the shutter curtain 33 contact the guide block 55. As the winding section 47 rotates, the shutter curtain 33 moves with both end faces in contact with the guide block 55. At this time, because the guide block 55 is made of a resin material, sliding noise can be suppressed compared to when it is made of a metal material. Furthermore, wear on both end faces of the shutter curtain 33 can be suppressed compared to when the guide block 55 is made of a metal material. This also increases the durability of the shutter curtain 33. As a result, quietness during opening and closing operations can be improved.

[0069] In the maintenance work method for the opening / closing body storage section according to this embodiment, the wiring cover 53 to which the guide block 55 is fixed is formed in a shape that surrounds the front half side around the bearing 51, i.e., in a C-shape. The C-shape has a circumferentially separated distance that is greater than the diameter of the winding section 47 when the shutter curtain 33 is not wound around it.

[0070] Even when the upper cover 23 of the storage section 19 is embedded in the eaves ceiling 13, the lower cover 25 is positioned below the eaves ceiling 13. When the lower cover 25 of the storage section 19 is removed, a maintenance opening 65 is opened. This maintenance opening 65 has an opening area that allows a worker to unclip the fastening of the wiring cover 53.

[0071] As a result, when the wiring cover 53 is released from the fastening, it is separated from the bracket 49 together with the guide block 55. The separated wiring cover 53 utilizes its C-shape to tilt the upper end side toward the winding part 47 within the storage part 19. The tilted wiring cover 53 is rotated and moved along the winding part 47, so that it can be pulled out from the maintenance opening 65 with the lower end side leading.

[0072] By removing the wiring cover 53 and the guide block 55 from the storage section 19, the winding section 47 can be detached from the bearing 51. Then, the winding section 47 detached from the bearing 51 can be taken out to the outside through the maintenance opening 65.

[0073] When replacing the winding section 47, a new winding section 47 is inserted through the maintenance opening 65 and supported by dropping it into the bearing 51. Next, the wiring cover 53 integrated with the guide block 55 is fastened and fixed to the bracket 49.

[0074] Therefore, the structure of the opening / closing body storage section according to this embodiment makes it possible to replace the winding section 47 while accommodating the storage section 19 embedded in the eaves ceiling, i.e., the eaves embedding.

[0075] Furthermore, according to the maintenance work method for the opening / closing body storage section of this embodiment, the maintenance opening 65 can be opened by removing only the lower cover 25 under the eaves ceiling 13, and the maintenance opening 65 can be used to replace the winding section 47 while accommodating the fit of the eaves filling.

[0076] In the opening / closing body storage section according to this embodiment, the wiring cover 53 may be a chain cover that covers a chain that transmits the rotational force of the drive motor to a sprocket. Furthermore, the opening / closing body storage section according to this embodiment can also be applied to a normal shutter device in which the slats 39 do not rotate relative to the linear connecting members 41. [Explanation of symbols]

[0077] 13...Eaves 15...Opening 17...Wall part 19...Storage area 23...Top cover 25...Lower cover 33...Opening and closing body (shutter curtain) 47...winding section 49…Bracket 51...Bearing 53...Wiring cover 55...Guide block 63...Opposite surface 65...Maintenance opening

Claims

1. A structure of an opening / closing body storage unit having a storage unit attached to a corner where a wall portion having an opening and a soffit intersect, an upper cover that covers the storage unit and is embedded in the soffit, and a lower cover that is detachable from the storage unit and is exposed below the soffit, The storage section stores a winding section that winds and unwinds an opening / closing body that opens and closes the opening, the winding section has both axial ends supported by bearings provided on opposing surfaces of a pair of brackets fixed to the wall section at positions on both lateral sides of the opening, A wiring cover is fastened and fixed to the opposing surface, the wiring cover being disposed with a wiring gap therebetween and surrounding the front half of the housing portion around the bearing, The structure of the opening / closing body storage section is characterized in that the wiring cover is provided with a guide block that contacts the opening / closing body and guides it during opening and closing movement.

2. 2. The structure of the opening / closing body storage section according to claim 1, wherein the guide blocks are in contact with both end surfaces of the opening / closing body in the lateral direction.

3. 3. The structure of the opening / closing body storage section according to claim 1, wherein a rear wiring cover is fixed to the opposing surface across a wiring gap, the rear wiring cover surrounding the rear half side of the bearing.

4. 3. The structure of the opening / closing body storage section according to claim 1, wherein the guide block is made of a resin material.

5. 4. The structure of the opening / closing body storage section according to claim 3, wherein the guide block is made of a resin material.

6. A maintenance work method for an opening / closing body storage unit having the structure of the opening / closing body storage unit according to claim 1, comprising: Remove the lower cover; The wiring cover is released from the maintenance opening of the storage section that is opened under the eaves ceiling, The upper end of the wiring cover is tilted together with the guide block in a direction approaching the winding portion, A maintenance method for an opening / closing body storage section, characterized in that the wiring cover is pulled out from the maintenance opening with the lower end leading while rotating along the winding section.

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