Electric shutter

Abstract

To provide a compact electric shutter with a smaller depth dimension of a shutter case.SOLUTION: An electric shutter 1 comprises: a shutter case; a shutter winding shaft 42; a slat 41A; an electric motor that rotates and drives the shutter winding shaft 42; a power cable that supplies power to the electric motor; and a wiring cover 80. The shutter case comprises: a case back plate 46 with a back surface 461 and an extending surface 462. The wiring cover 80 comprises: an engagement portion that engages with the extending surface 462; and a cover body 81. The cover body 81 is arranged between the slat 41A wound on the shutter winding shaft 42 and a corner 468 consisting of the back surface 461 and the extending surface 462 to divide a storage space 481 between the corner 468 and it. In the storage space 481, a connector 34 for separably connecting the power cable is arranged.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to an electric shutter. [Background technology]

[0002] In an electric shutter that uses an electric motor to wind and feed slats, a partition plate is provided on the rear side of the shutter body, i.e., the building side, in the shutter case to separate the space that houses the electric wires that supply power to the electric motor from the space that houses the shutter body, so that the electric wires do not interfere with the slats (see, for example, Patent Document 1). The partition plate in Patent Document 1 is fixed to the inside surface of the shutter case with bolts or the like, and is disposed between the slats wound on the drum and the rear edge of the shutter case. A storage space for storing electric wires is provided between the partition plate and the rear edge of the shutter case. The electric wires are divided into electric wires on the shutter body side and electric wires on the building unit side, and each electric wire is connected using a connector. This connector is also disposed in the storage space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2000-192757 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in Patent Document 1, a partition plate is placed between the building-side edge of the slats wound around the drum and the back edge of the shutter case, so the space for arranging the slats wound around the drum and the space for storing the electric wires are arranged in the projected direction (indoor / outdoor direction), which means that the projected dimensions of the shutter case also become larger, posing the problem of the electric shutter becoming larger.

[0005] An object of the present invention is to provide a compact electric shutter capable of reducing the projected dimensions of the shutter case. [Means for solving the problem]

[0006] The electric shutter of the present invention comprises a shutter case, a shutter winding shaft arranged within the shutter case, a slat attached to the shutter winding shaft so that it can be wound and unwound, an electric motor that rotates and drives the shutter winding shaft, a power cable that supplies power to the electric motor, and a wiring cover, wherein the shutter case comprises a case back plate having a rear portion and an extended surface portion extending from the upper or lower end of the rear portion to the outside of the room, the wiring cover comprises an engagement portion that engages with the extended surface portion and a cover body, and the cover body is arranged between the slat wound around the shutter winding shaft and a corner portion formed by the rear portion and the extended surface portion to partition a storage space between the corner portion, and a connector that detachably connects the power cable is arranged in the storage space. Effect of the Invention

[0007] According to the present invention, the projected dimensions of the shutter case can be reduced, making it possible to provide a compact electric shutter. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing an electric shutter according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a front view showing a main part of the electric shutter according to the embodiment. [Diagram 3] FIG. 2 is a side view showing a main part of the electric shutter according to the embodiment. [Figure 4] FIG. 2 is a perspective view showing a wiring structure of the electric shutter according to the embodiment. [Diagram 5] FIG. 4 is a side view showing a wiring cover and a storage space according to the embodiment. [Figure 6] FIG. 2 is an exploded perspective view showing the mounting structure of the wiring cover according to the embodiment. [Figure 7] FIG. 2 is a front view showing the mounting structure of the wiring cover according to the embodiment. [Figure 8] FIG. 4 is a top view showing the mounting structure of the wiring cover according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 3, an electric shutter 1 according to the embodiment is attached to the framework of a building so as to be capable of opening and closing an opening of the building. The electric shutter 1 includes a frame 2 and a shutter main body 4 attached to the frame 2. In the following description, the left-right direction of the electric shutter 1 is defined as the X-axis direction, the up-down direction of the electric shutter 1 is defined as the Y-axis direction, and the front-rear direction (projection direction) of the electric shutter 1 is defined as the Z-axis direction. The X, Y, and Z axis directions are perpendicular to each other.

[0010] The frame body 2 comprises left and right vertical frames 21, a top plate 22 screwed to the upper ends of the left and right vertical frames 21, an inspection plate 23 hung on the outer edge of the top plate 22, an upper frame 25 (lintel) attached to the upper part of the left and right vertical frames 21 and below the top plate 22, and a lower frame 26 attached to the lower ends of the left and right vertical frames 21. Guide rails 211 that vertically guide the left and right ends of a shutter curtain 41 (described later) are attached along the Y-axis direction to the left and right vertical frames 21. An engagement groove (not shown) is formed in the outer edge of the top plate 22 along the X-axis direction, and the inspection plate 23 is attached by having its upper edge hooked into the engagement groove along the X-axis direction of the top plate 22 and the left and right ends of its lower edge screwed to mounting pieces 473 of the case side plates 47 (described later), and can be removed from the frame 2 by unscrewing the inspection plate 23 from the mounting pieces 473. In this frame body 2, the upper parts of the left and right vertical frames 21, the top plate 22, and the upper frame 25 form the storage section 20 in which the shutter main body 4 is disposed, and the storage section 20 can be opened and closed from the front side (outside the room) by attaching and detaching the inspection plate 23. In addition, a back plate (not shown) is attached to the upper parts of the left and right vertical frames 21 that define the storage section 20, and the case side plate 47 is detachably fixed to the back plate, i.e., the vertical frames 21, from the front with screws.

[0011] The shutter main body 4 includes a shutter curtain 41 made up of multiple connected slats, a shutter winding shaft 42 along the X-axis direction that can wind up and unwind the shutter curtain 41, an electric motor 43 that drives the shutter winding shaft 42, and a shutter case 45 that axially supports the shutter winding shaft 42. The electric motor 43 is made up of a tubular motor built into the shutter winding shaft 42, and its operation is controlled by a control unit (not shown) built into the shutter winding shaft 42. The shutter curtain 41 is configured by connecting the above-mentioned multiple slats to each other so that they can rotate freely, with the uppermost slat attached to the shutter winding shaft 42 and the lowermost slat attached to a seat plate that sits on the lower frame 26. Therefore, the shutter curtain 41 moves up and down in the Y-axis direction while being guided by the guide rail 211 by the rotation of the shutter winding shaft 42.

[0012] As shown in FIGS. 2 to 5, the shutter case 45 includes a case back plate 46 and a pair of left and right case side plates 47 fixed to the left and right edges of the case back plate 46 so as to protrude forward. As shown in Figures 5 and 6, the case back plate 46 is a plate member having a back portion 461, an upper extending surface portion 462, and a lower extending surface portion 463, and is formed in a U-shape in cross section and extends in the X-axis direction. The rear portion 461 is disposed on the rear side of the shutter winding shaft 42, and has a height dimension approximately the same as the winding diameter of the outermost slat 41A when the shutter curtain 41 is wound around the shutter winding shaft 42, as shown in FIG. The upper extending surface portion 462 extends forward from the upper end of the rear surface portion 461, and the front end is folded back to the rear to provide an upper surface folded portion 464. The upper surface folded portion 464 is folded back and disposed on the upper surface side of the extending surface portion 462, and its length in the Z-axis direction is short, approximately 1 / 8 of that of the extending surface portion 462. The lower extending surface portion 463 extends forward from the lower end of the rear surface portion 461, and the front end is folded back to the rear side to provide a lower surface folded portion 465. The lower surface folded portion 465 is folded back and disposed on the lower surface side of the extending surface portion 463, and its length in the Z-axis direction is short, approximately 1 / 8 of that of the extending surface portion 463. Wiring ports 466 through which the power cable 30 and the like are inserted are formed near both left and right ends of the rear surface portion 461. As shown in FIG. 2, each wiring port 466 is formed above the shutter winding shaft 42, that is, at a position that does not overlap with the shutter winding shaft 42, in a front view of the shutter body 4 seen from the outside of the room. 4 and 6, circular engagement holes 467 are formed near both left and right ends of the upper extending surface portion 462. The positions of the left and right engagement holes 467 in the X-axis direction are substantially the same as the positions of the left and right wiring ports 466. Also, as shown in Figures 5 and 6, the corner formed by the rear surface portion 461 and the extending surface portion 462 forms an upper corner portion 468, and the corner formed by the rear surface portion 461 and the extending surface portion 463 forms a lower corner portion 469.

[0013] A wiring cover 80 is detachably attached to the extending surface portion 462 of the case back plate 46. The wiring cover 80 will be described in detail later. 1, a resin side cap 7 is attached to the case side plate 47, which is disposed in front of the upper portion of the vertical frame 21 in the Z-axis direction and covers the side surface of the shutter body 4.

[0014] 2 to 4, the case side plate 47 has a side plate main body 471 that rotatably supports one end of the shutter winding shaft 42, a pair of upper and lower mounting pieces 472 that are detachably screwed from the front to the back plate of the vertical frame 21, mounting pieces 473 to which the left and right ends of the lower edge of the inspection plate 23 are detachably screwed, and a pair of upper and lower cap mounting pieces 474 to which the side caps 7 are screwed. The cap mounting pieces 474 are located forward of the mounting pieces 472. The side plate body 471 is flat and has a rectangular first opening 471A formed in its approximate center. A bearing member 475 supporting the shutter winding shaft 42 is inserted into the first opening 471A from the vertical frame 21 side and attached to the side plate body 471. A second opening 471B through which the power cable 30 and the like are passed is formed in the upper rear portion in the Z-axis direction of the side plate main body 471. The height position of the second opening 471B is substantially the same as that of the wiring port 466.

[0015] The bearing member 475 has an approximately C-shaped shaft connecting portion 476 inserted into the shutter winding shaft 42 side from the first opening 471A, and three-sided fixing portions 477 bent outward from the shaft connecting portion 476 and fixed to the side plate main body 471 with rivets or screws.

[0016] [Power cable wiring structure] Next, the wiring structure of the power cable 30 that supplies power from the building's power source to the electric motor 43 will be described with reference to Fig. 2 to Fig. 4. The power cable 30 includes a power supply side cable 31, a motor side cable 32, and a relay cable 33. The power supply side cable 31 is a cable connected to the power supply side of the building, and is inserted into the shutter case 45 from the building side through a wiring port 466 formed in the case back plate 46 of the shutter case 45. The end of the power supply side cable 31 inserted into the shutter case 45 is connected to the first connector 34. The first connector 34 is disposed at a height position approximately equal to that of the wiring port 466, that is, in a front view of the shutter body 4 seen from the outside of the room, above the shutter winding shaft 42, that is, at a position not overlapping the shutter winding shaft 42. As shown in FIG. 5, the first connector 34 is disposed in a storage space 481 defined between the case back plate 46 and the wiring cover 80 in the shutter body 4. That is, the shutter body 4 is provided with a first space 48 defined by the case back plate 46 and the left and right case side plates 47, in which the shutter winding shaft 42 is disposed, and in the first space 48, a storage space 481 is formed by a space defined between the wiring cover 80 and the case back plate 46, which is approximately triangular in side view.

[0017] The motor-side cable 32 is a cable that supplies power to the electric motor 43 and the control unit, and is drawn out from one end of the shutter winding shaft 42. The motor-side cable 32 is drawn out to the outer surface side of the case side plate 47 through the first opening 471A of the side plate main body 471, and its end is connected to the second connector 35. The second connector 35 is disposed in a second space 49 defined between the case side plate 47 and the vertical frame 21.

[0018] The relay cable 33 is inserted through the second opening 471B, with one end connected to a first connector 34 arranged in the storage space 481 and the other end connected to a second connector 35 arranged in the second space 49. The power supply side cable 31, the motor side cable 32, and the relay cable 33 that make up the power cable 30 are each three-core cables, and the first connector 34 and the second connector 35 are capable of detachably connecting the three-core cables to each other. The length dimension of the relay cable 33 is set to be longer than the length dimension of the power supply side cable 31 from the wiring port 466 of the case back plate 46 to the end connected to the relay cable 33, i.e., the end connected to the first connector 34, and also to be longer than the length dimension of the motor side cable 32. The power supply side cable 31, the first connector 34, and the relay cable 33 arranged in the first space 48 are arranged horizontally from the wiring port 466 along the case back plate 46, as shown in Figures 2 and 5, in a position that does not overlap the shutter winding shaft 42 when viewed from the front, and is arranged in a position that does not interfere with the slats being wound around the shutter winding shaft 42.

[0019] [Wiring structure of communication cables] The electric shutter 1 of this embodiment is a remote control shutter that can be remotely operated by a remote control, and a communication section 50 (communication unit) that receives an operation signal to remotely operate the electric motor 43 of the shutter winding shaft 42 is attached to the outer surface side of the side panel main body 471. The communication unit 50 is connected to a control unit provided in the shutter winding shaft 42 via a communication cable 51. The communication cable 51 is a cable that transmits a signal for controlling the control unit from the communication unit 50, and is arranged to pass through the first opening 471A of the side plate main body 471, similar to the motor-side cable 32. Furthermore, the electric shutter 1 of this embodiment is provided with a communication cable 52 for communicating with a control device in the building for an IoT home service that can manage and control home appliances and home equipment. This communication cable 52 is extended from the communication unit 50 through the second opening 471B and the wiring port 466 to the control device in the building. However, if the electric shutter 1 is not subject to the IoT home service, the communication cable 52 is not necessary.

[0020] [Wiring cover] Next, the wiring cover 80 will be described with reference to Fig. 4 to Fig. 8. As also shown in Fig. 6, the wiring cover 80 includes a rectangular plate-shaped cover body 81, a protruding piece 82 protruding from the upper edge of the cover body 81 toward the rear side, a pair of locking pieces 83 extending toward the rear side from the left and right vicinities of the upper edge of the cover body 81, and a pair of extending pieces 85 extending toward the rear side from both side surfaces of the cover body 81, respectively. The locking piece 83 includes an extension 831 extending from the upper surface of the cover body 81 toward the rear surface side, and a locking portion 832 formed continuously from the extension 831 and bent into a V-shaped cross section.

[0021] The wiring cover 80 is a cover that covers the first connector 34 that connects the power supply side cable 31 and the relay cable 33, and is detachably attached by engaging with the extending surface portion 462 on the upper side of the case back plate 46. That is, the upper surface of the protruding piece 82 of the wiring cover 80 and the upper end surface of the extending piece 85 are substantially flush with each other, and they are disposed on the lower surface side of the extending surface portion 462 (the inner surface side of the shutter case 45). On the other hand, the locking piece 83 is disposed above the protruding piece 82 and the extending piece 85, and is disposed on the upper surface side of the extending surface portion 462 (the outer surface side of the shutter case 45). Therefore, the wiring cover 80 is attached to the extending surface portion 462 by inserting the extending surface portion 462 between the locking piece 83 and the protruding piece 82 and the extending piece 85. Therefore, the engaging portion that engages the wiring cover 80 with the extending surface portion 462 is constituted by the protruding piece 82, the locking piece 83, and the extending piece 85. Moreover, the locking portion 832 of one locking piece 83 engages with the locking hole 467 formed in the extending surface portion 462, thereby preventing the wiring cover 80 from falling off from the extending surface portion 462. The locking portion 832 of the other locking piece 83, which is formed with a V-shaped cross section, is pressed against the extending surface portion 462, thereby preventing the wiring cover 80 from falling off from the extending surface portion 462 in this respect as well.

[0022] The cover body 81 is provided at an incline with respect to the extension 831 of the locking piece 83, the protruding piece 82, and the upper end edge of the extending piece 85. That is, as shown in Fig. 5, the intersecting angle between the locking piece 83 and the cover body 81 is about 50°, and the cover body 81 is disposed at an incline in the direction approaching the rear surface part 461 as it goes downward. In addition, the height position of the lower end of the cover body 81 is made higher than the height position of the rotation center of the shutter winding shaft 42, and the cover body 81 is positioned so as not to interfere with the outermost slats 41A of the shutter curtain 41 wound around the shutter winding shaft 42. For this reason, the cover body 81 of the wiring cover 80 is positioned between the outermost slat 41A wound around the shutter winding shaft 42 and a corner portion 468 formed by the back portion 461 and the extended surface portion 462, and defines a storage space 481 between the corner portion 468 and the cover body 81.

[0023] The dimension of the cover body 81 in the left-right direction (X-axis direction) may be a dimension capable of covering the first connector 34, that is, equal to or greater than the dimension of the first connector 34 in the X-axis direction. In this embodiment, the left-right dimension of the cover body 81 is such that one edge in the X-axis direction of the cover body 81 is positioned so as to substantially abut against the case side plate 47, and the other edge is positioned so as to substantially hide the wiring port 466, as shown in FIG. 5, when the wiring cover 80 is attached to the extending surface portion 462 of the case back plate 46, a substantially triangular storage space 481 is defined in the Z-axis direction and the Y-axis direction by the back surface portion 461, the extending surface portion 462, and the cover main body 81. In the X-axis direction, this storage space 481 is formed within the arrangement range of the cover main body 81, that is, within the range from the wiring port 466 to the case side plate 47. In the storage space 481, the first connector 34, and the end of the power supply cable 31 and the end of the relay cable 33 connected to the first connector 34 are arranged.

[0024] [Effects of the embodiment] According to the electric shutter 1 of this embodiment, the wiring cover 80 is attached to the upper extension surface portion 462 of the case back plate 46, and a storage space 481 surrounded by the cover body 81, the back surface portion 461 and the extension surface portion 462 is formed between the upper corner portion 468 of the case back plate 46 and the outermost slat 41A, that is, in the dead space at the upper corner portion of the case back plate 46. For this reason, since the cover body 81 and the storage space 481 are not disposed on the back side of the slat 41A wound around the shutter winding shaft 42, it is possible to prevent the expected dimensions of the shutter case 45 from increasing, and it is possible to make the electric shutter 1 smaller in size. The wiring cover 80 is attached by clamping the extending surface portion 462 between the projection piece 82, the extending piece 85, and the locking piece 83, which are the engagement portions, so that the workability on site can be improved compared to fixing with screws.

[0025] Since the first connector 34 connecting the power supply side cable 31 and the relay cable 33 is disposed in the storage space 481 surrounded by the cover body 81 of the wiring cover 80 and the case back plate 46, even if the water droplets splash when the shutter curtain 41 with water droplets on its surface is wound around the shutter winding shaft 42, the cover body 81 disposed between the first connector 34 and the slat 41A can prevent the water droplets from adhering to the first connector 34 and getting wet. For this reason, for example, when waterproofing the first connector 34 by wrapping waterproof tape around it, the quality depends on the workability of the worker who applies the waterproof tape, but in this embodiment, the wiring cover 80 is provided instead of the waterproof tape, so that the waterproof quality can be stabilized and the workability can be improved. Furthermore, since the cover body 81 is positioned between the first connector 34 and the slat 41A, the power supply side cable 31, the relay cable 33 and the first connector 34 can be reliably prevented from coming into contact with the slat 41A while the shutter curtain 41 is opening or closing, thereby preventing the power supply side cable 31 and the relay cable 33 from coming loose from the first connector 34 due to contact with the slat 41A and preventing the power supply side cable 31, the relay cable 33 and the first connector 34 from being damaged. Furthermore, since the power supply side cable 31 and the relay cable 33 are covered by the cover body 81, there is no need to secure them with cable ties or the like, which reduces the number of parts and improves installation workability.

[0026] Since the locking pieces 83 include locking portions 832 having a V-shaped cross section, the locking portions 832 of one of the locking pieces 83 can be engaged with the engagement holes 467, thereby preventing the wiring cover 80 from falling off from the extending surface portion 462. Furthermore, since the locking portions 832 of the other locking portion 832 can be pressed against the extending surface portion 462, the wiring cover 80 can be prevented from falling off from the extending surface portion 462. The wiring cover 80 is attached by engaging the projection piece 82, the locking piece 83, and the extension piece 85, which are the engagement parts, with the extension surface part 462, so that the workability of installation can be improved compared to the case of attachment with screws, bolts, etc. Furthermore, when removing the power supply side cable 31 and the relay cable 33 from the first connector 34 for maintenance of the shutter main body 4, the first connector 34 can be exposed by removing the inspection plate 23 and pulling out the wiring cover 80, and the work of removing and connecting the power supply side cable 31 and the relay cable 33 can be easily performed.

[0027] [Variations] The cover body 81 of the wiring cover 80 is formed in a rectangular plate shape, but may also be formed in an arc-shaped or stepped cross section, etc., as long as it can define a storage space 481 between the corner portion 468 and the cover body 81 can be positioned so as not to interfere with the slat 41A. In the above embodiment, the wiring cover 80 is attached to the upper extending surface portion 462 of the case back plate 46, but it may be attached to the lower extending surface portion 463. That is, the power supply side cable 31, the relay cable 33, and the first connector 34 may be arranged along the lower corner portion 469 of the case back plate 46, the wiring cover 80 may have the locking piece 83 arranged below the extending surface portion 463 (the outer surface side of the shutter case 45), the protruding piece 82 and the extending piece 85 arranged above the extending surface portion 463 (the inner surface side of the shutter case 45), and the cover main body 81 may be arranged so as to be inclined obliquely upward from the front end of the extending surface portion 463 toward the rear portion 461.

[0028] The configuration of the engagement portion of the wiring cover 80 is not limited to the one including the protruding piece 82, the locking piece 83, and the extending piece 85. For example, the engagement portion may include only one of the protruding piece 82 and the extending piece 85. The engagement portion may be locked to the upper surface folded portion 464 of the extending surface portion 462 or the lower surface folded portion 465 of the extending surface portion 463. In other words, the engagement portion of the wiring cover 80 may be capable of detachably attaching the wiring cover 80 to the extending surface portion 462 or the extending surface portion 463 without using screws or the like.

[0029] [Summary of the invention] The electric shutter of the present invention comprises a shutter case, a shutter winding shaft arranged within the shutter case, a slat attached to the shutter winding shaft so that it can be wound and unwound, an electric motor that rotates and drives the shutter winding shaft, a power cable that supplies power to the electric motor, and a wiring cover, wherein the shutter case comprises a case back plate having a rear portion and an extended surface portion extending from the upper or lower end of the rear portion to the outside of the room, the wiring cover comprises an engagement portion that engages with the extended surface portion and a cover body, and the cover body is arranged between the slat wound around the shutter winding shaft and a corner portion formed by the rear portion and the extended surface portion to partition a storage space between the corner portion, and a connector that detachably connects the power cable is arranged in the storage space. According to the present invention, the wiring cover is attached to the upper or lower extended surface of the case back plate, and the storage space surrounded by the cover body, the back surface, and the extended surface is formed between the slat wound on the shutter winding shaft and the corner portion formed by the back surface and the extended surface, that is, in the dead space of the corner portion where the slat is not arranged on the case back plate. Therefore, since the cover body and storage space are not arranged on the back side of the slat wound on the shutter winding shaft 42, it is possible to prevent the expected dimensions of the shutter case from increasing, and the electric shutter can be made smaller. In addition, since the wiring cover is attached to the extended surface by the engagement portion, it is possible to improve the workability on site compared to screw fixing.

[0030] In the electric shutter of the present invention, it is preferable that the engagement portion of the wiring cover comprises a protruding piece arranged on the inner surface side of the extending surface portion, and a locking piece arranged on the outer surface side of the extending surface portion. According to the present invention, the wiring cover can be attached to the extended surface portion by clamping the extended surface portion between the engaging portion, which is the protruding piece, and the locking piece, which improves workability on site compared to screw fixation, and also allows the wiring cover to be easily attached and detached from the extended surface portion.

[0031] In the electric shutter of the present invention, it is preferable that an engagement hole is formed in the extended surface portion, and the engagement portion of the wiring cover includes a locking piece that engages with the engagement hole. According to the present invention, the locking pieces of the wiring cover can be engaged with the engagement holes of the extending surface portion, so that the wiring cover can be prevented from falling off from the extending surface portion.

[0032] In the electric shutter of the present invention, it is preferable that the shutter case comprises the case back plate and case side plates provided at both left and right ends of the case back plate and supporting the shutter winding shaft, the case back plate has a wiring port through which the power cable is inserted, the case side plates have an opening through which the power cable is inserted, and the wiring cover is arranged in the range from the wiring port to the case side plates. According to the present invention, since the wiring cover is disposed in the range from the wiring port to the side panel of the case, in addition to the connector, the power cable disposed from the wiring port in the rear panel of the case to the opening in the side panel of the case can also be concealed by the wiring cover, thereby reliably preventing the slats from coming into contact with the power cable or the connector. [Explanation of symbols]

[0033] 1...electric shutter, 4...shutter body, 23...inspection plate, 30...power cable, 31...power cable, 32...motor cable, 33...relay cable, 34...first connector, 41...shutter curtain, 41A...slat, 42...shutter winding shaft, 43...electric motor, 45...shutter case, 46...case back plate, 47...case side plate, 48...first space, 80...wiring cover, 81...cover body, 82...protruding piece, 83...locking piece, 85...extending piece, 461...back portion, 462...extending surface portion, 463...extending surface portion, 464...upper surface folded portion, 465...lower surface folded portion, 466...wiring port, 467...engagement hole, 468...corner portion, 469...corner portion, 471B...second opening, 481...storage space, 831...extension portion, 832...locking portion.

Claims

1. Shutter case and A shutter winding shaft disposed in the shutter case; A slat attached to the shutter winding shaft so as to be capable of being wound up and unwound; an electric motor that rotates the shutter winding shaft; a power cable for supplying power to the electric motor; A wiring cover, The shutter case includes a case back plate having a back surface portion and an extension surface portion extending from an upper end or a lower end of the back surface portion to the outside of the room, The wiring cover includes an engagement portion that is engaged with the extension surface portion and a cover body, the cover body is disposed between the slat wound around the shutter winding shaft and a corner portion formed by the rear portion and the extending surface portion, and defines a storage space between the cover body and the corner portion; A connector for detachably connecting the power cable is disposed in the storage space. The electric shutter is characterized by

2. The electric shutter according to claim 1, The engaging portion of the wiring cover includes a protruding piece disposed on the inner surface side of the extending surface portion and a locking piece disposed on the outer surface side of the extending surface portion. The electric shutter is characterized by

3. The electric shutter according to claim 1, An engagement hole is formed in the extending surface portion, The engaging portion of the wiring cover includes a locking piece that is engaged with the engaging hole. The electric shutter is characterized by

4. The electric shutter according to claim 1, The shutter case includes the case back plate and case side plates provided at both left and right ends of the case back plate and supporting the shutter winding shaft, a wiring port through which the power cable is inserted is formed on the rear plate of the case; An opening through which the power cable is inserted is formed in the case side plate, The wiring cover is disposed in a range from the wiring port to the case side plate. The electric shutter is characterized by

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