Wiring structure for electric shutter

Abstract

To provide wiring structure for an electric shutter which enables a power cable to be easily routed during maintenance work and improves work efficiency.SOLUTION: Wiring structure of an electric shutter includes a frame and a shutter body. The shutter body 4 includes a shutter case 45, a shutter winding shaft 42, slats, and an electric motor that rotatably drives the shutter winding shaft 42. A power cable 30 that supplies power from a power source of a building to the electric motor includes a power source side cable 31 that is connected to the power source side of the building, a motor side cable 32 that is connected to the electric motor, and a relay cable 33 that connects the power source side cable 31 and the motor side cable 32. The power source side cable 31 and the relay cable 33 are detachably connected via a first connector 34. The motor side cable 32 and the relay cable 33 are detachably connected via a second connector 35.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a wiring structure for an electric shutter. [Background technology]

[0002] In an electric shutter that uses the drive of an electric motor to wind and unwind a shutter curtain around a winding shaft, a slat guide is arranged on the inner surface of the side plate of the shutter case that supports the winding shaft, and a cable that supplies power to the electric motor built into the winding shaft is arranged in a storage space formed between the side plate and the slat guide, thereby preventing contact between the cable and the shutter curtain (see, for example, Patent Document 1).

[0003] In the electric shutter of Patent Document 1, the end of the power cable that supplies power from a power source inside the building is inserted into the inside of the shutter through an insertion hole in the back plate of the shutter case. The connector provided at the end of the power cable is housed in the upper end of the inner storage space formed between the semicircular inner slat guide and the side plate among the multiple slat guides. On the other hand, a connection cable for the electric motor is pulled out from the winding shaft and connected to the connector through the inner storage space. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2023-88178 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the case of replacing the shutter body including the shutter case, winding shaft, shutter curtain, etc., in the electric shutter, the end of the power cable is removed from the connector, the existing shutter body is removed from the building, and the end of the power cable is pulled out toward the building through the insertion hole in the back plate. Then, when attaching a new shutter body to the building, it is necessary to insert the end of the power cable into the inside of the shutter case through the insertion hole in the back plate of the new shutter case, pull out the end of this power cable to the upper end of the inner storage space of the new inner slat guide, and connect it to the connection cable arranged in the inner storage space via the connector. In addition, when replacing the electric motor in the electric shutter, the end of the connection cable is removed from the connector, the winding shaft is removed from the side plate, and the connection cable is also pulled out from the inner storage space. Then, when attaching a winding shaft incorporating a new electric motor to the shutter case, the connection cable pulled out from the new winding shaft needs to be placed in the inner storage space of the inner slat guide and connected to the connector.

[0006] As described above, the power cable pulled out from the building's power supply and the connection cable pulled out from the electric motor are directly connected by a connector, so when replacing the shutter body, the power cable needs to be pulled out a relatively long distance or stored, and when replacing the electric motor, the connection cable needs to be pulled out a relatively long distance or stored.This means that the work of handling the power cable during maintenance work such as replacing the shutter body or electric motor becomes complicated, resulting in reduced work efficiency.

[0007] An object of the present invention is to provide a wiring structure for an electric shutter that allows for easy routing of a power cable during maintenance work and improves work efficiency. [Means for solving the problem]

[0008] The present invention is a wiring structure for an electric shutter comprising a frame body and a shutter body attached to the frame body, wherein the shutter body comprises a shutter case attached to the frame body, a shutter winding shaft arranged within the shutter case, a slat attached to the shutter winding shaft so as to be able to be wound and unwound, and an electric motor which drives and rotates the shutter winding shaft, wherein a power cable which supplies power from a building's power source to the electric motor comprises a power supply side cable connected to the power supply side of the building, a motor side cable connected to the electric motor, and a relay cable which connects the power supply side cable and the motor side cable, wherein the power supply side cable and the relay cable are detachably connected via a first connector, and the motor side cable and the relay cable are detachably connected via a second connector. Effect of the Invention

[0009] According to the present invention, it is possible to provide a wiring structure for an electric shutter that allows the power cable to be easily routed during maintenance work and improves work efficiency. [Brief description of the drawings]

[0010] [Figure 1] 1 is a perspective view showing an electric shutter according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a front view showing a main part of the electric shutter according to the first embodiment. [Diagram 3] FIG. 2 is a side view showing a main part of the electric shutter according to the first embodiment. [Figure 4] FIG. 2 is a perspective view showing a wiring structure of the electric shutter according to the first embodiment. [Diagram 5] FIG. 4 is an exploded perspective view showing a replacement operation of the shutter body according to the first embodiment. [Figure 6] FIG. 4 is an exploded perspective view showing a replacement operation of the shutter body according to the first embodiment. [Figure 7]FIG. 11 is a perspective view showing a main part of a wiring structure of the electric shutter according to the second embodiment. [Figure 8] FIG. 11 is an explanatory diagram showing a wiring structure of the electric shutter according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] [Configuration of the first embodiment] A first embodiment of the present invention will now be described with reference to the drawings. 1 to 3, an electric shutter 1 according to the first 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.

[0012] 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.

[0013] 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.

[0014] 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. The case back plate 46 is a plate material aligned along the X-axis and Y-axis directions, and wiring ports 461 through which the power cable 30 and the like are inserted are formed near both left and right ends. As shown in FIG. 2, each wiring port 461 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 main body 4 seen from the outside of the room. 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.

[0015] 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 461.

[0016] 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 panel main body 471 by screws.

[0017] [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 461 formed in the case back plate 46 of the shutter case 45. An 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 in a first space 48 defined by the case back plate 46 and the case side plates 47 in the shutter main body 4. The first space 48 is defined by the case back plate 46 and the left and right case side plates 47, and is a space in which the shutter winding shaft 42 is disposed. The first connector 34 is disposed at approximately the same height as the wiring port 461, that is, above the shutter winding shaft 42 in a front view of the shutter main body 4 seen from the outside of the room, that is, at a position that does not overlap with the shutter winding shaft 42.

[0018] 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.

[0019] The relay cable 33 is positioned through the second opening 471B, with one end connected to the first connector 34 positioned in the first space 48 and the other end connected to the second connector 35 positioned 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 461 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 461 along the case back plate 46, as shown in Figures 2 and 3, 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.

[0020] [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 461 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.

[0021] [How to assemble the electric shutter] The above-mentioned electric shutter 1 is assembled as follows. First, the frame body 2 is framed by the left and right vertical frames 21, the top plate 22, the upper frame 25 (lintel) and the lower frame 26, to form the storage section 20. On the other hand, the case side plates 47 are attached to both the left and right ends of the case back plate 46 to form the shutter case 45, and the left and right ends of the shutter winding shaft 42 are connected to the bearing members 475 fixed to the case side plates 47 to make the shutter curtain 41 capable of being wound up and unwound. Also, the communication unit 50 is fixed to the outer surface side of the side plate body 471 of the case side plate 47 shown on the right side in FIG. 2. Furthermore, the motor side cable 32 and the communication cable 51 extending from one end of the shutter winding shaft 42 are drawn out to the outer surface side of the case side plate 47 through the first opening 471A, the relay cable 33 is connected to the second connector 35, and the communication cable 51 is connected to the communication unit 50. Also, the relay cable 33 is inserted into the second opening 471B, and the end on the first space 48 side is connected to the first connector 34, and the end on the second space 49 side is connected to the second connector 35. In this manner, the shutter body 4 is formed.

[0022] Next, the shutter body 4 is placed in the storage section 20 of the frame body 2 and attached to the frame body 2. At this time, the power supply side cable 31 extending from the building side is inserted into the wiring port 461 and connected to the first connector 34. In addition, the communication cable 52 extending from the building side is inserted into the wiring port 461 and the second opening 471B and connected to the communication unit 50. When the shutter body 4 is fixed to the frame body 2, a second space 49 is formed between the side plate body 471 and the vertical frame 21, and the above-mentioned communication unit 50, motor side cable 32, relay cable 33, second connector 35, and communication cables 51 and 52 are arranged in the second space 49. Next, the side cap 7 is screwed to the cap attachment piece 474 of the case side plate 47. Finally, the inspection plate 23 shown in FIG. 1 is hung on the top plate 22, and the left and right ends of the lower edge of the inspection plate 23 are removably screwed to the mounting pieces 473 of the case side plates 47 to assemble the electric shutter 1 shown in FIG.

[0023] [How to replace the shutter body] Next, we will explain a method for replacing the shutter body 4 in the electric shutter 1. The shutter body 4 is replaced not only when the shutter body 4 breaks down or deteriorates, but also when changing the type of shutter body 4 to a wind-resistant shutter or the like. When replacing the shutter body 4, the inspection plate 23 is removed as shown in Fig. 5, and then the side cap 7 is removed as shown in Fig. 6. Furthermore, the left and right guide rails 211 are removed. Next, the power supply side cable 31 is removed from the first connector 34 arranged in the first space 48. Then, the screws that have fixed the shutter body 4 to the vertical frame 21 are removed, and the shutter body 4 is pulled forward and removed. At this time, if a communication cable 52 is provided, it is sufficient to first remove the communication cable 52 from the communication unit 50 and then remove the shutter body 4 from the frame 2. When pulling out and removing the shutter main body 4, the power supply cable 31 and the communication cable 52 can be pulled out from the wiring port 461 of the case back plate 46 and removed from the shutter main body 4.

[0024] Next, the new shutter body 4 is installed in the storage section 20 of the frame body 2. At this time, the power supply side cable 31 connected to the power supply side of the building is pulled out from the wiring port 461 of the new shutter body 4 to the first space 48 of the new shutter body 4. Then, the relay cable 33 of the new shutter body 4 and the power supply side cable 31 are connected using the first connector 34. Furthermore, if the communication cable 52 is arranged, the communication cable 52 is arranged through the wiring port 461 and the second opening 471B to the second space 49 and connected to the communication unit 50 of the newly installed shutter body 4. Thereafter, the newly installed shutter body 4 is fixed to the vertical frame 21. In addition, the side cap 7 and the guide rail 211 are attached, and finally the inspection plate 23 is attached. This completes the replacement work of the shutter body 4.

[0025] [How to replace the electric motor (shutter winding shaft)] Next, we will explain how to replace the electric motor 43 in the electric shutter 1. The electric motor 43 is replaced, for example, when the electric motor 43 breaks down. In addition, since the electric motor 43 is built into the shutter winding shaft 42, it can be replaced by removing the shutter winding shaft 42 from the shutter case 45. When replacing the electric motor 43, the shutter winding shaft 42 is removed, and therefore, similarly to when replacing the shutter main body 4, the inspection plate 23 is removed and then the side cap 7 is removed. Next, the motor-side cable 32 is removed from the second connector 35 arranged in the second space 49 exposed by removing the side cap 7, and the communication cable 51 is removed from the communication unit 50. Next, the shutter winding shaft 42 is removed from the bearing member 475. At this time, since the motor-side cable 32 and the communication cable 51 have been removed from the second connector 35 and the communication unit 50, they can be pulled out from the first opening 471A of the side plate main body 471, and can be removed together with the shutter winding shaft 42.

[0026] Next, the motor side cable 32 and the communication cable 51 pulled out from the newly installed shutter winding shaft 42 are inserted into the first opening 471A while the shutter winding shaft 42 is attached to the bearing member 475. Next, the motor side cable 32 is connected to the second connector 35, and the communication cable 51 is connected to the communication unit 50. Thereafter, the side cap 7 is attached, and finally the inspection plate 23 is attached. With the above, the replacement work of the shutter winding shaft 42 is completed.

[0027] [Effects of the first embodiment] According to the electric shutter 1 of this embodiment, the power supply side cable 31 and the relay cable 33 are detachably connected by the first connector 34, and the motor side cable 32 and the relay cable 33 are detachably connected by the second connector 35, so that the power supply cable 30 can be attached and detached at two points, the first connector 34 and the second connector 35. Therefore, by removing the motor side cable 32 from the second connector 35, the shutter winding shaft 42 incorporating the electric motor 43 can be easily removed from the shutter case 45, and the electric motor 43 can be easily replaced. In addition, by removing the power supply side cable 31 from the first connector 34, the shutter main body 4 can be easily removed from the frame body 2, and the shutter main body 4 can be easily replaced. Therefore, the power supply cable 30 can be easily handled during maintenance work to replace the shutter main body 4 or the electric motor 43, and work efficiency can be improved.

[0028] The length of the relay cable 33 is longer than the length of the power supply side cable 31 from the wiring port 461 of the case back plate 46 to the end connected to the first connector 34, and is also longer than the length of the motor side cable 32, so that the length of the power supply side cable 31 arranged from the case back plate 46 to the inside of the shutter case 45 and the length of the motor side cable 32 can be shortened. Therefore, when the power supply side cable 31 is removed from the first connector 34, the power supply side cable 31 can be easily pulled out from the wiring port 461 to the outside of the shutter case 45 or easily inserted into the first space 48. In addition, by removing the motor side cable 32 from the second connector 35, the shutter winding shaft 42, which has the electric motor 43 built in and from which the motor side cable 32 is pulled out, can be easily removed from or attached to the shutter case 45. Therefore, when replacing the shutter main body 4 or the shutter winding shaft 42, the power supply cable 30 can be easily handled, improving work efficiency.

[0029] The height position of the wiring port 461 is formed at a position higher than the shutter winding shaft 42, and the power supply side cable 31, first connector 34 and relay cable 33, which are inserted through this wiring port 461 and placed in the first space 48, are positioned along the case back plate 46, so that they are positioned so as not to interfere with the slats taken up by the shutter winding shaft 42. Furthermore, the motor side cable 32, relay cable 33 and second connector 35 are positioned on the outer side of the case side plate 47, in the second space 49 where they do not interfere with the slats, so there is no need to provide a slat guide on the inner side of the case side plate 47, which reduces the number of parts and reduces costs. Furthermore, since the first connector 34 does not overlap the shutter winding shaft 42 when viewed from the front and is positioned higher than the shutter winding shaft 42, the power supply side cable 31 can be attached and detached to the first connector 34 without removing the shutter winding shaft 42 from the case side panel 47, which also improves work efficiency.

[0030] [Second embodiment] The main parts of a shutter body 4B of an electric shutter 1B of the second embodiment will be described with reference to Figures 7 and 8. The frame body 2 of the electric shutter 1B of the second embodiment is the same as that of the first embodiment, so illustrations and description are omitted. Furthermore, in the shutter body 4B, components that are the same or similar to those of the first embodiment are given the same reference numerals and description is omitted. The shutter body 4B differs in that three slat guides, a first slat guide 61, a second slat guide 62 and a third slat guide 63, are provided on the inner surface of one of the case side panels 47B of the shutter case 45B, and the power cable 30 is arranged therein. The first slat guide 61 is a substantially semicircular guide located in a range from approximately the center of the case side plate 47B in the Z-axis direction toward the case back plate 46B. The second slat guide 62 is a guide located forward from approximately the center of the case side plate 47B in the Z-axis direction. The third slat guide 63 is a guide located below the second slat guide 62.

[0031] A power cable 30 including a power supply side cable 31, a motor side cable 32, and a relay cable 33 are wired to the shutter main body 4B. The power supply side cable 31 is inserted into the shutter case 45B from the wiring port 461 of the case back plate 46B, arranged along the case back plate 46B and the case side plate 47B, and connected to the first connector 34 arranged in a storage space partitioned between the first slat guide 61 and the case side plate 47B. The motor side cable 32 is pulled out from the electric motor 43 and inserted into the storage space of the first slat guide 61, and then inserted into the third slat guide 63 and connected to the second connector 35 arranged in the third slat guide 63. The relay cable 33 is disposed within the first slat guide 61 and the third slat guide 63, and is connected to the first connector 34 and the second connector 35.

[0032] In the electric shutter 1B of the second embodiment, when replacing the shutter body 4B, the first connector 34 is pulled out from the first slat guide 61, the power supply side cable 31 is removed from the first connector 34, and then the shutter body 4B is replaced. Furthermore, when replacing the electric motor 43, the third slat guide 63 is removed, the motor side cable 32 is disconnected from the second connector 35, and the electric motor 43 built into the shutter winding shaft 42 is replaced.

[0033] [Effects of the second embodiment] In the electric shutter 1B of the second embodiment, the power cable 30 is composed of a power supply side cable 31, a motor side cable 32, and a relay cable 33, which are detachably connected by a first connector 34 and a second connector 35. Therefore, when replacing the shutter main body 4B or the electric motor 43, the power supply cable 30 can be easily handled, improving work efficiency, and other effects similar to those of the first embodiment can be achieved. In addition, in the electric shutter 1B, the first slat guide 61 and the third slat guide 63, in addition to serving to guide the slats, also cover the first connector 34, the second connector 35, the relay cable 33 and the motor side cable 32 to prevent these parts from interfering with the slats.This reduces the number of parts and reduces costs compared to the case where covering members are provided separately from the slat guides.

[0034] [Variations] In each of the above embodiments, the communication cable 52 was directly connected to the communication unit 50, but a connector may be provided in a position similar to the first connector 34 so that the communication cable can be separated into a communication cable connected to the building side and a communication cable connected to the communication unit 50 side. The relationship between the lengths of the power supply side cable 31, the motor side cable 32, and the relay cable 33 is not limited to that in the above embodiment. For example, the length of the motor side cable 32 may be slightly longer than the length of the relay cable 33. Furthermore, the power supply cable 30 is not limited to being separable at two locations, the first connector 34 and the second connector 35, but may be separable at three or more locations. In other words, the power supply cable 30 may be configured by connecting three or more cables in series so that it can be separated at least at two locations, the first connector 34 and the second connector 35. The electric motor 43 is not limited to being built into the shutter winding shaft 42 , but may be provided outside the shutter winding shaft 42 to rotate the shutter winding shaft 42 . The position where the wiring port 461 of the case back plate 46 is formed is not limited to a position higher than the shutter winding shaft 42 as in the above-described embodiments, but may be a position lower than the shutter winding shaft 42. Furthermore, the height position at which the first connector 34 is disposed may be any position that does not overlap with the shutter winding shaft 42 in a front view, and may be, for example, a position lower than the shutter winding shaft 42.

[0035] [Summary of the invention] The wiring structure of an electric shutter of the present invention is a wiring structure of an electric shutter comprising a frame body and a shutter body attached to the frame body, wherein the shutter body has a shutter case attached to the frame body, a shutter winding shaft arranged within the shutter case, a slat attached to the shutter winding shaft so as to be able to be wound and unwound, and an electric motor that rotates and drives the shutter winding shaft, and a power cable that supplies power from a building's power source to the electric motor has a power supply side cable connected to the power supply side of the building, a motor side cable connected to the electric motor, and a relay cable that connects the power supply side cable and the motor side cable, wherein the power supply side cable and the relay cable are detachably connected via a first connector, and the motor side cable and the relay cable are detachably connected via a second connector. According to the present invention, the power supply side cable and the relay cable are detachably connected to the first connector, and the motor side cable and the relay cable are detachably connected to the second connector, so that the power supply cable can be attached and detached at two points, the first connector and the second connector. Therefore, by removing the motor side cable from the second connector, the electric motor can be easily replaced. Also, by removing the power supply side cable from the first connector, the shutter body can be easily removed. This allows the power cable to be easily routed during maintenance work, improving work efficiency.

[0036] In the wiring structure of the electric shutter of the present invention, the shutter case comprises a 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, and the case back plate is formed with a wiring port through which the power supply side cable is inserted, and it is preferable that the length dimension of the relay cable is longer than the length dimension of the power supply side cable from the wiring port to the end connected to the relay cable and longer than the length dimension of the motor side cable. According to the present invention, the length of the relay cable is longer than the length from the wiring port of the case back plate of the power supply side cable to the end connected to the relay cable, and also longer than the length of the motor side cable, so that the length of the power supply side cable arranged from the case back plate inside the shutter case and the length of the motor side cable can be shortened. Therefore, by removing the power supply side cable from the first connector and removing the motor side cable from the second connector, the power cable can be easily handled during maintenance work, improving work efficiency.

[0037] In the wiring structure of the electric shutter of the present invention, the shutter case comprises a 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 vertical frame of the frame body is arranged on the outer surface side of the case side plates, the electric motor is arranged inside the shutter winding shaft, the case side plates are formed with a first opening through which the motor side cable can be inserted and a second opening through which the relay cable can be inserted, the first connector is arranged in a first space partitioned by the case back plate and the case side plates of the shutter case, and the second connector is arranged in a second space partitioned between the vertical frame and the case side plates. According to the present invention, the motor side cable can be pulled out from the end of the shutter winding shaft through the first opening of the case side plate into the second space defined between the case side plate and the vertical frame, so that the motor side cable does not interfere with the shutter slats, and there is no need to provide a slat guide or the like covering the motor side cable on the inner surface of the case side plate. Furthermore, the relay cable can also be arranged in the second space through the second opening of the case side plate, so that only the first connector and the power supply side cable connected to the first connector and a part of the relay cable need to be arranged in the first space, so that these can be easily arranged in a position that does not interfere with the slats, and a slat guide that covers them is also unnecessary. Therefore, since the slat guide is not necessary, the number of parts can be reduced and costs can be reduced.

[0038] In the wiring structure of the electric shutter of the present invention, it is preferable that a side cap that is removably attached to the outside of the vertical frame is arranged on the outer surface of the case side panel, and the second connector is arranged in a position in the second space that can be exposed to the outside by removing the side cap. According to the present invention, the second connector disposed in the second space can be exposed by removing the side cap, so the motor side cable can be easily attached and detached to and from the second connector. Therefore, the shutter winding shaft with the built-in electric motor can be easily removed from and attached to the shutter case, improving the work efficiency when replacing the electric motor.

[0039] In the wiring structure of the electric shutter of the present invention, it is preferable that the first connector is arranged in a position that does not overlap the shutter winding shaft when viewed from the front of the shutter body from the outside of the room. According to the present invention, the first connector is positioned so as not to overlap with the shutter winding shaft when viewed from the front, so that when the first space is exposed to the outside by removing the inspection plate, the first connector can be checked without removing the shutter winding shaft, and the power cable can be attached and detached from the first connector. Therefore, when replacing the shutter body, there is no need to remove the shutter winding shaft from the shutter case, improving work efficiency.

[0040] In the wiring structure of the electric shutter of the present invention, the shutter case comprises a 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, and a plurality of slat guides arranged around the shutter winding shaft are arranged on the inner surface of the case side plates, and at least the first connector, the second connector, the relay cable and the motor side cable may be covered by the slat guides. According to the present invention, the first connector, the second connector, the relay cable, and the motor side cable are covered with the slat guide, so that the slat guide can also be used as a covering part for each connector and cable, thereby reducing the number of parts and costs. [Explanation of symbols]

[0041] 1...electric shutter, 1B...electric shutter, 2...frame, 4...shutter body, 4B...shutter body, 7...side cap, 20...part, 21...vertical frame, 23...inspection plate, 30...power cable, 31...power side cable, 32...motor side cable, 33...relay cable, 34...first connector, 35...second connector, 41...shutter curtain, 42...shutter winding shaft, 43...electric motor, 45...shutter case, 45B...shutter case, 46...case back plate, 46B...case back plate, 47...case side plate, 47B...case side plate, 48...first space, 49...second space, 50...communication part, 51...communication cable, 52...communication cable, 61...first slat guide, 62...second slat guide, 63...third slat guide, 211...guide rail, 461...wiring port, 471A...first opening, 471B...second opening.

Claims

1. A wiring structure for an electric shutter comprising a frame body and a shutter main body attached to the frame body, The shutter body includes a shutter case attached to the frame, a shutter winding shaft disposed within the shutter case, a slat attached to the shutter winding shaft so as to be capable of being wound up and unwound, and an electric motor that rotates and drives the shutter winding shaft; A power cable for supplying power from a building power source to the electric motor includes: A power supply side cable connected to a power supply side of the building; A motor side cable connected to the electric motor; a relay cable that connects the power supply side cable and the motor side cable, the power supply cable and the relay cable are detachably connected via a first connector, The motor side cable and the relay cable are detachably connected via a second connector. A wiring structure for an electric shutter.

2. The wiring structure of the electric shutter according to claim 1, The shutter case includes a 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 supply cable is inserted is formed on the rear plate of the case; The length of the relay cable is longer than the length of the power supply side cable from the wiring port to the end connected to the relay cable, and is longer than the length of the motor side cable. A wiring structure for an electric shutter.

3. The wiring structure of the electric shutter according to claim 1, The shutter case includes a 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 vertical frame of the frame body is disposed on the outer surface side of the case side plate, The electric motor is disposed inside the shutter winding shaft, The case side plate is formed with a first opening through which the motor side cable can be inserted and a second opening through which the relay cable can be inserted, the first connector is disposed in a first space defined by the case back plate and the case side plate of the shutter case, The second connector is disposed in a second space defined between the vertical frame and the case side plate. A wiring structure for an electric shutter.

4. The wiring structure of the electric shutter according to claim 3, A side cap is detachably provided on the exterior side of the vertical frame on the outer surface side of the case side plate, The second connector is provided in the second space at a position that can be exposed to the outside by removing the side cap. A wiring structure for an electric shutter.

5. The wiring structure of the electric shutter according to claim 1, The first connector is disposed at a position not overlapping the shutter winding shaft in a front view of the shutter body seen from the outside of the room. A wiring structure for an electric shutter.

6. The wiring structure of the electric shutter according to claim 1, The shutter case includes a 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 plurality of slat guides are arranged around the shutter winding shaft on the inner surface side of the case side plate, At least the first connector, the second connector, the relay cable, and the motor-side cable are covered with the slat guide. A wiring structure for an electric shutter.

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