Electric shutter device

Abstract

To take a waterproof measure of a connector of a cable without complicating attaching work and detaching work.SOLUTION: In an electric shutter device, configured in such a manner that a take-up shaft 31 is disposed between inner surfaces 34a of two side plates 34 and a shutter curtain 32 is taken up and delivered around the take-up shaft 31 by driving an electric motor 37, a plurality of slat guides 40a, 40B, 40C are provided in parallel in a circumferential direction on the inner surfaces 34a of the side plates 34 so as to surround the take-up shaft 31, the inner slat guide 40A is connected to the side plate 34 via one end, the other end can be moved in a separation manner from the side plate 34 in a state that the one end is connected to the side plate 34, and cables 51, 52 for connecting the electric motor 37 is housed between the other end of the inner slat guide 40A and the side plate 34.SELECTED DRAWING: Figure 7

Description

[Technical field]

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

[0002] In an electric shutter device that winds and unwinds a shutter curtain around a winding shaft by driving an electric motor, a cable that supplies power to the electric motor is provided in the gap between the side plate of the shutter case that supports the winding shaft and the shutter curtain wound on the winding shaft. For this reason, in this type of electric shutter device, a slat guide is provided on the inner surface of the side plate to form an accommodation space between the side plate and the slat guide, and a cable is provided in this accommodation space to prevent the cable from coming into contact with the shutter curtain (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-196358 A Summary of the Invention [Problem to be solved by the invention]

[0004] According to the above-mentioned electric shutter device, the slat guide can prevent the cable from coming into contact with the shutter curtain. However, when installing the cable, the slat guide must be removed from the side plate, which can make the installation and removal of the electric shutter device complicated.

[0005] SUMMARY OF THE PRESENT EMBODIMENT In view of the above-mentioned circumstances, an object of the present invention is to provide an electric shutter device in which a cable can be arranged without complicating installation and removal operations. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the electric shutter device of the present invention is an electric shutter device in which a winding shaft is arranged between the inner surfaces of two side plates, and an electric motor is driven to wind and unwind a shutter curtain around the winding shaft, and a plurality of slat guides are arranged circumferentially on the inner surface of the side plate so as to surround the winding shaft, and at least one of the plurality of slat guides is connected to the side plate via one end, and while the one end is connected to the side plate, the other end can be moved away from the side plate, and a cable connecting the slat guide to the electric motor is housed between the other end of the slat guide and the side plate. Effect of the Invention

[0007] According to the present invention, the slat guide that houses the cable has one end connected to the side plate and the other end movable away from the side plate, which makes it possible to install the cable without releasing the connection between the one end of the slat guide and the side plate, thereby preventing the installation and removal operations from becoming complicated. [Brief description of the drawings]

[0008] [Figure 1] 1 is a vertical cross-sectional view of an electric shutter device according to an embodiment of the present invention. [Diagram 2] 2 is an exploded perspective view of the electric shutter device shown in FIG. 1, seen from the outside of the room. [Diagram 3] This shows the components of the electric shutter device shown in Figure 1, where (a) is an oblique view of the shutter case, (b) is an oblique view of one of the side panels that make up the shutter case, and (c) is an oblique view of the other side panel that makes up the shutter case. [Figure 4] 2A shows the components of the electric shutter device shown in FIG. 1, and FIG. 2B is an enlarged perspective view of the main part of the motor case which is one end of the winding shaft. [Diagram 5] 2 is a perspective view of a main portion showing a connecting portion between a side plate and a winding shaft in the electric shutter device shown in FIG. 1. [Figure 6] This shows the side panel and multiple slat guides of the electric shutter device shown in Figure 1, where (a) is an oblique view of the state in which all slat guides are installed, (b) is an oblique view of the state in which the outer slat guide has been removed, and (c) is an oblique view of the plate state in which the lower slat guide has been removed. [Figure 7] This shows the side panel and multiple slat guides of the electric shutter device shown in Figure 1, where (a) is a view from the inner surface side with all slat guides installed, (b) is a view of the state with the lower slat guide removed, (c) is a view of the state in (b) with the outer slat guide further removed, and (d) is a view of the state in (c) with the winding shaft further removed. [Figure 8] 2 is a perspective view of a side plate and a plurality of slat guides of the electric shutter device shown in FIG. 1, seen from above with a portion cut away along a horizontal plane. [Figure 9] 2 is a perspective view of a side plate and a plurality of slat guides of the electric shutter device shown in FIG. 1, seen from below with a portion cut away along a horizontal plane. [Figure 10] 2 is a perspective view of a side panel and a plurality of slat guides of the electric shutter device shown in FIG. 1, partially cut away along a vertical plane, as viewed from the outside of the room. FIG. [Figure 11] This shows the side panel and multiple slat guides of the electric shutter device shown in Figure 1, where (a) is a view from the inner surface side with all slat guides installed, (b) is a view with the outer slat guide and lower slat guide removed, and (c) is a view from the state shown in (b) with the winding shaft further removed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A preferred embodiment of the electric shutter device according to the present invention will be described in detail below with reference to the attached drawings. In the following, for convenience, the terms "prospect direction" and "finding direction" may be used. The prospect direction is the direction along the depth of the electric shutter device, as shown by arrow A in the figure. A surface along the prospect direction may be called a "prospect surface." The prospect direction is a direction along the top and bottom perpendicular to the prospect direction in the case of an object that extends along the horizontal direction, such as an upper frame. In the case of an object that extends along the vertical direction, such as a vertical frame, the horizontal direction perpendicular to the prospect direction is called the "finding direction." A surface along the prospect direction may be called a "finding surface."

[0010] 1 and 2 show an electric shutter device according to an embodiment of the present invention. The electric shutter device exemplified here is attached to the upper part of a frame 10 of a fitting such as a sliding window. A shutter box 20 is configured in a portion of the frame 10 of the fitting to which the electric shutter device is attached that is above the upper frame 11. The shutter box 20 is for housing and supporting the electric shutter device, and is configured in a horizontally elongated rectangular parallelepiped shape by extending the upper ends of the left and right vertical frames 12 above the upper frame 11 and installing a roof plate 21 between the upper ends of the extended vertical frames 12.

[0011] The electric shutter device arranged in the shutter box 20 described above winds and unwinds the shutter curtain 32 around the winding shaft 31 provided in the shutter case 30. As shown in Figs. 2 and 3, the shutter case 30 is configured by providing side plates 34 on both sides of the back plate 33 so as to face each other. The upper side and the outdoor side portion between the left and right side plates 34 in the shutter case 30 are detachably covered by a front cover 35a. A bracket (shaft support portion) 36 for supporting the winding shaft 31 is attached to the opposing portions of the side plates 34. The winding shaft 31 incorporates an electric motor 37 and its control unit 38, and rotatably supports a winding roll 39 on its outer periphery, and can rotate the winding roll 39 in both directions relative to each other by driving the electric motor 37. The control unit 38 controls the rotation direction and rotation speed of the electric motor 37 based on commands given from a remote control or indoor terminal device (not shown) described later.

[0012] In this embodiment, as shown in Fig. 4, a winding shaft 31 is applied in which a shaft 31a protrudes from one end of a winding roll 39 and a motor case 31b protrudes from the other end, and the winding shaft 31 is attached between the left and right side plates 34 by connecting the shaft 31a and the motor case 31b to brackets 36. More specifically, as shown in Figs. 3(b) and 3(c), the brackets 36 each have a support wall portion 36a and two side walls 36b provided on both sides of the support wall portion 36a, and are attached to a portion that is approximately the center of the inner surface 34a of the side plate 34 with a support opening 36c between the side walls 36b opening obliquely upward toward the outside of the room. The mutual distance between the two side walls 36b is formed to a dimension that can accommodate the shaft 31a of the winding shaft 31. The shaft 31a of the winding shaft 31 is detachably connected to the bracket 36 by passing a connecting pin (not shown) through the side walls 36b and the shaft 31a with the shaft 31a disposed between the support wall 36a and the two side walls 36b. Meanwhile, the motor case 31b of the winding shaft 31 is formed with a recess 31c having substantially the same width as the two side walls 36b so as to open on the circumferential surface and end surface, as shown in FIG. 4(b). The motor case 31b is detachably connected to the bracket 36 by passing a connecting pin (not shown) through the motor case 31b and the side walls 36b with the bracket 36 fitted into the recess 31c. By removing the connecting pin (not shown) that passes through between the bracket 36 and the shaft 31a and the connecting pin (not shown) that passes through between the bracket 36 and the motor case 31b, it is possible to remove the winding shaft 31 from between the side plates 34 by moving the winding shaft 31 radially toward the support opening 36c between the side wall portions 36b.

[0013] As shown in FIG. 1, the shutter curtain 32 is formed by connecting a plurality of slats 32a to each other, and one end of the shutter curtain 32 is connected to the winding roll 39. When the winding roll 39 rotates around the winding shaft 31 by the driving of the electric motor 37, the shutter curtain 32 can be wound and unwound around the winding roll 39. As shown in FIG. 1 and FIG. 2, the left and right vertical frames 12 are provided with guide rails 13 on the outside of the room. The shutter curtain 32 unwound from the winding roll 39 has both edges inserted into the guide rails 13, and can close the opening of the frame body 10. As shown in FIG. 1, a winding space 32A is provided between the outer circumferential surface of the winding roll 39 and the back plate 33 and the front cover 35a so that the shutter curtain 32 does not come into contact with the back plate 33 and the front cover 35a even when the shutter curtain 32 is completely wound around the winding roll 39. In addition, a larger mutual gap is secured between the side plates 34 of the shutter case 30 than between the shutter curtains 32, and the shutter curtain 32 wound up on the winding roll 39 does not come into contact with the inner surface 34a of the side plate 34. Note that reference numeral 35b in Fig. 2 denotes a side cover that covers the outer surface of the part of the side plate 34 that protrudes outside the room beyond the vertical frame 12.

[0014] As shown in Fig. 5, one side plate 34 (the right side plate when viewed from the outside of the room in this embodiment) has three slat guides 40A, 40B, 40C arranged side by side in the circumferential direction on the inner surface 34a facing the other side plate 34 so as to surround the winding shaft 31. More specifically, on the inner surface 34a of one side plate 34 supporting the motor case 31b of the winding shaft 31, an inner slat guide 40A, an outer slat guide 40B, and a lower slat guide 40C are provided so as to surround the motor case 31b. Each of the slat guides 40A, 40B, 40C is molded from resin.

[0015] As shown in Figs. 5 to 11, the inner slat guide 40A is semicircular and covers a portion of the inner surface 34a of the side plate 34 between the back plate 33 and an imaginary vertical plane passing through the axis of the winding shaft 31, and has an inner surface portion 40A1 and an inner peripheral wall portion 40A2. The inner surface portion 40A1 is a flat plate-like portion disposed so as to be substantially parallel to the inner surface 34a of the side plate 34. The inner peripheral wall portion 40A2 protrudes from the edge of the inner surface portion 40A1 toward the inner surface 34a of the side plate 34, and forms an inner storage space 40A3 between the inner surface portion 40A1 and the side plate 34. The inner slat guide 40A has a screw insertion hole (connecting portion) 40A4 only at a corner portion close to the back plate 33 on the lower side, and is attached to the side plate 34 by screwing a screw S into the side plate 34 through the screw insertion hole 40A4. The screw insertion hole 40A4 is located at a position on the outer periphery side of the winding space 32A described above, and is not covered by the shutter curtain 32 even when all of the shutter curtain 32 is wound around the winding roll 39.

[0016] As is clear from the figure, the inner slat guide 40A is configured so that the vertical dimension is larger than the horizontal dimension, and by appropriately bending it, the upper end can be separated from the side plate 34 even when the screw S is screwed. At the upper end of the inner accommodation space 40A3, as shown in FIG. 7, a power cable (cable) 51 and its connector 51a for supplying power from inside the building to the electric motor 37 of the winding shaft 31 and the control unit 38 are accommodated. The power cable 51 enters the inside of the shutter case 30 through the insertion hole 33a provided in the back plate 33, and the connector 51a provided at the entrance end is accommodated in the upper end of the inner accommodation space 40A3. The connector 51a of the power cable 51 is for connecting the connection cable (cable) 52 drawn out from the motor case 31b of the winding shaft 31 to the power cable 51. The connection cable 52 is accommodated in the inner storage space 40A3 by extending almost horizontally from the portion located on the back panel 33 side of the motor case 31b toward the back panel 33, and then extends upward and further almost horizontally toward the outside, with the extended end being engaged with the connector 51a of the power cable 51.

[0017] As shown in Fig. 5 to Fig. 11, the outer slat guide 40B is formed in an arc shape so as to cover the upper part of the exterior side surrounded by an imaginary vertical plane passing through the axis of the winding shaft 31 and an imaginary horizontal plane passing through the lower surface of the winding shaft 31 on the inner surface 34a of the side plate 34. That is, the outer slat guide 40B is provided at a position so as to cover a part which is an extension of the support opening 36c between the side wall parts 36b of the bracket 36 provided on the side plate 34. In this embodiment, the outer slat guide 40B is applied, which has an attachment plate part 40B1 in contact with the side plate 34 and a guide part 40B2 facing the other side plate 34, and which defines an outer accommodation space (accommodation space) 40B3 between them. The surface of the guide portion 40B2 is configured to be positioned on approximately the same plane as the inner surface portion 40A1 of the inner slat guide 40A when the mounting plate portion 40B1 is abutted against the inner surface 34a of the side plate 34. This outer slat guide 40B has screw insertion holes (connecting portions) 40B4 only in the upper corners facing the outside of the room, and is attached to the side plate 34 by screwing screws S into the side plate 34 through the screw insertion holes 40B4. The screw insertion holes 40B4 are located at a position that is more outer than the winding space 32A described above, and are not covered by the shutter curtain 32 even when all the shutter curtain 32 is wound around the winding roll 39.

[0018] As shown in Fig. 8, an inner / outer engagement portion 40AB is provided between the upper end of the outer slat guide 40B and the upper end of the inner slat guide 40A. When the outer slat guide 40B is attached to the side plate 34 with the inner slat guide 40A attached, the inner / outer engagement portions 40AB engage with each other to restrict the movement of the upper end of the inner slat guide 40A away from the side plate 34. In this embodiment, an engagement recess 40A5 is provided in a portion of the inner surface portion 40A1 of the inner slat guide 40A close to the outer slat guide 40B, and an outer engagement piece 40B5 is provided in a portion of the guide portion 40B2 of the outer slat guide 40B corresponding to the engagement recess 40A5, so that the outer engagement piece 40B5 is overlapped on the surface of the engagement recess 40A5. The inner slat guide 40A and the outer slat guide 40B are in contact with each other without any gaps above an imaginary vertical plane passing through the axis of the winding shaft 31, and the inner accommodation space 40A3 and the outer accommodation space 40B3 are in communication with each other.

[0019] As shown in Figs. 5 to 11, a communication device 53 is disposed in the outer accommodation space 40B3 of the outer slat guide 40B for connecting the control unit 38 to external devices (not shown), such as a remote control or an indoor terminal device. The communication device 53 has an input / output terminal 53a including an operation button, and a display unit 53b such as an LED. The input / output terminal 53a is exposed downward from the lower end of the outer slat guide 40B, and the display unit 53b is exposed to the outside from the surface of the outer slat guide 40B facing the outside. The communication device 53 and the control unit 38 are connected inside the outer accommodation space 40B3 by fitting a connector 54a of a communication cable 54 extending from the motor case 31b into the communication device 53. A terminal communication cable 55 extending from an indoor terminal device (not shown) inside the building is connected to the communication device 53. The terminal communication cable 55 is disposed in the outer accommodating space 40B3 through the upper end of the inner accommodating space 40A3, and is connected to the communication device 53 inside the outer accommodating space 40B3.

[0020] The lower slat guide 40C is rectangular and covers the lower part of the room exterior surrounded by an imaginary vertical plane passing through the axis of the winding shaft 31 and an imaginary horizontal plane passing through the lower surface of the winding shaft 31 on the inner surface 34a of the side plate 34. The part of the lower slat guide 40C located on the back plate 33 side is in contact with the lower end of the inner slat guide 40A without any gap, and the upper part of the lower slat guide 40C is in contact with the lower end of the outer slat guide 40B without any gap. This lower slat guide 40C has a lower surface portion 40C1 and a lower peripheral wall portion 40C2, similar to the inner slat guide 40A. The lower surface portion 40C1 is a flat plate-shaped portion arranged to be approximately parallel to the inner surface 34a of the side plate 34. The lower peripheral wall portion 40C2 protrudes from an edge of the lower surface portion 40C1 toward the inner surface 34a of the side plate 34, and the lower surface portion 40C1 is located on substantially the same plane as the inner surface portion 40A1, and defines a lower accommodation space 40C3 between the lower surface portion 40C1 and the side plate 34. A maintenance cable 56 extending from the motor case 31b is accommodated in the lower accommodation space 40C3. The maintenance cable 56 is for connecting a terminal device for maintenance (not shown), and an extended portion including a connector 56a is disposed in the inner accommodation space 40A3.

[0021] The lower slat guide 40C has a screw hole (connecting portion) 40C4 only in the portion facing the outside of the room, and is attached to the side plate 34 by screwing a screw S into the side plate 34 through the screw hole 40C4. The screw hole 40C4 is located at a position on the outer periphery side of the winding space 32A described above. Therefore, even when the shutter curtain 32 is wound up, the lower slat guide 40C can be removed, and a maintenance terminal device can be connected to the maintenance cable 56. When the lower slat guide 40C is attached to the side plate 34, the input / output terminal 53a provided at the lower end of the outer slat guide 40B is covered by the lower slat guide 40C. As a result, even if water such as rainwater enters the inside of the shutter case 30, there is no risk of the input / output terminal 53a being exposed to water.

[0022] As shown in Figures 9 and 10, a lower inner engagement portion 40AC is provided between the lower slat guide 40C and the inner slat guide 40A, and a lower outer engagement portion 40BC is provided between the lower slat guide 40C and the outer slat guide 40B. When the lower slat guide 40C is attached to the side plate 34 with the inner slat guide 40A attached, the lower inner engagement portions 40AC engage with each other to restrict the movement of the end portion of the lower slat guide 40C located on the back plate 33 side away from the side plate 34. In this embodiment, as shown in Figure 9, a lower inner engagement piece 40C5 is provided on the lower surface portion 40C1 of the lower slat guide 40C so as to be inserted into the inner accommodation space 40A3 of the inner slat guide 40A and engaged with the inner surface portion 40A1. When the lower slat guide 40C is attached to the side plate 34 with the outer slat guide 40B attached, the lower outer engagement portion 40BC engages with each other to limit the movement of the lower end portion of the outer slat guide 40B away from the side plate 34. In this embodiment, as shown in Fig. 10, a lower outer engagement piece 40B6 is provided on the guide portion 40B2 of the outer slat guide 40B so as to be inserted into the lower accommodation space 40C3 of the lower slat guide 40C and engage with the lower surface portion 40C1.

[0023] In the electric shutter device configured as described above, when an operation is performed from inside the building through a remote control or an indoor terminal device (not shown), the electric motor 37 rotates in a direction and at a rotation speed according to the operation through the control unit 38. This causes the shutter curtain 32 to be wound and unwound around the winding roll 39 of the winding shaft 31, and the opening of the frame body 10 is opened and closed appropriately. During these operations, the shutter curtain 32 moves inside the shutter case 30. However, the power cable 51, the connection cable 52, the communication cable 54, the terminal communication cable 55, and the maintenance cable 56 are all arranged in the inner storage space 40A3, the outer storage space 40B3, and the lower storage space 40C3 provided between the inner slat guide 40A, the outer slat guide 40B, and the lower slat guide 40C and the side plate 34. Therefore, the shutter curtain 32 will not come into contact with these cables 51, 52, 54, 55, and 56, and there is no concern of problems such as disconnection. Moreover, the three slat guides 40A, 40B, 40C can be attached to and detached from the side plate 34 by simply screwing in each of them with the unique screw S. Therefore, although the three slat guides 40A, 40B, 40C are provided on the side plate 34, there is no risk of the manufacturing and maintenance operations becoming complicated.

[0024] In addition, the connector 51a that connects the power cable 51 and the electric motor 37 is disposed at the upper end of the inner accommodation space 40A3 provided between the inner slat guide 40A and the side plate 34. Therefore, in the state shown in Fig. 11(b), by moving the upper end of the inner slat guide 40A away from the side plate 34 while keeping the screw S that connects the inner slat guide 40A and the side plate 34 screwed in, it is possible to perform the work of installing the power cable 51 and the connection cable 52 and the work of attaching and detaching the connector 51a between them. 11(a), when the outer slat guide 40B is attached to the side plate 34 to which the inner slat guide 40A is attached, the inner / outer engagement portion 40AB restricts the movement of the upper end of the inner slat guide 40A in the direction away from the side plate 34, so that there is no risk of the upper end of the inner slat guide 40A accidentally moving away from the side plate 34. The screw insertion hole 40B4, which is the connection portion between the outer slat guide 40B and the side plate 34, is provided in a portion that is on the outer periphery side of the winding space 32A. Therefore, the outer slat guide 40B can be attached to and detached from the side plate 34 even when the shutter curtain 32 is wound around the winding shaft 31. When the lower slat guide 40C is attached after the outer slat guide 40B is attached to the side plate 34, the lower outer engagement piece 40B6 restricts the movement of the lower end of the outer slat guide 40B in the direction away from the side plate 34, and the lower inner engagement piece 40C5 restricts the movement of the end of the lower slat guide 40C located on the back plate 33 side in the direction away from the side plate 34.

[0025] 11(b), the extension of the support opening 36c between the side wall portions 36b of the bracket 36 is open. Therefore, with the inner slat guide 40A (and the lower slat guide 40C) attached to the side plate 34, the winding shaft 31 can be attached to and detached from the bracket 36 as shown in FIG. 11(c), improving workability.

[0026] In the above embodiment, the cables 51, 52 and the connector 51a are housed in the inner slat guide 40A that is provided to include a portion of the inner surface of the side plate that is closer to the body than the winding shaft, but it is not necessary to house the connector 51a, and the slat guide that houses them does not necessarily have to be the inner slat guide 40A. Also, although three slat guides are provided, the number is not necessarily three as long as there are two or more.

[0027] In the above embodiment, the winding shaft is exemplified as having an electric motor built therein, but the present invention is not necessarily limited to this.

[0028] As described above, the electric shutter device of the present invention is an electric shutter device in which a winding shaft is arranged between the inner surfaces of two side plates, and an electric motor is driven to wind and unwind a shutter curtain around the winding shaft, and a plurality of slat guides are arranged circumferentially on the inner surface of the side plate so as to surround the winding shaft, and at least one of the plurality of slat guides is connected to the side plate via one end, and while one end is connected to the side plate, the other end can be moved away from the side plate, and a cable connecting the slat guide to the electric motor is housed between the other end of the slat guide and the side plate. According to this invention, the slat guide that houses the cable has one end connected to the side plate and the other end movable away from the side plate, which makes it possible to install the cable without releasing the connection between the one end of the slat guide and the side plate, thereby preventing the installation and removal operations from becoming complicated.

[0029] The present invention is also characterized in that, in the above-mentioned electric shutter device, a connector for detachably connecting the cable is housed between the other end of the slat guide and the side plate. According to the present invention, there is no need to remove the slat guide when attaching or detaching the connector, which is advantageous in terms of workability.

[0030] Furthermore, the present invention is characterized in that in the above-mentioned electric shutter device, the electric motor is built into the winding shaft. According to this invention, there is no need to secure a separate space for arranging an electric motor, and it is possible to achieve a reduction in the size of the device.

[0031] The present invention is also characterized in that, in the above-mentioned electric shutter device, the multiple slat guides have an inner slat guide arranged to include a portion on the inner surface of the side plate that is located closer to the body than the winding shaft, and the connector is accommodated between the other end of the inner slat guide and the side plate. According to this invention, the connector is accommodated in the inner slat guide between the winding shaft and the part facing the building frame, so that the overall length of the cable can be short.

[0032] The present invention is also characterized in that, in the above-mentioned electric shutter device, the multiple slat guides have an outer slat guide arranged on the inner surface of the side panel to include a portion that is located outside the room further than the winding shaft, and the outer slat guide has a connection portion with the side panel in a portion that is more outer than the winding space of the shutter curtain secured around the winding shaft. According to this invention, the outer slat guide can be removed even when the shutter curtain is wound around the winding shaft.

[0033] The present invention is also characterized in that, in the above-mentioned electric shutter device, the outer slat guide has a connection portion with the side plate only at its base end portion which is close to the other end portion of the inner slat guide, and the base end portion is engaged with the inner slat guide in a state which restricts movement of the other end portion of the inner slat guide in a direction away from the side plate. According to this invention, when the inner slat guide is attached to or detached from the side plate, it is only necessary to operate the connecting part at the base end, which is advantageous in terms of workability. Moreover, when the outer slat guide is attached to the side plate, the other end of the inner slat guide engages with the outer slat guide, so that the other end of the inner slat guide does not inadvertently separate from the side plate.

[0034] The present invention is also characterized in that, in the above-mentioned electric shutter device, the inner surface of each side plate is provided with a shaft support portion that enables the winding shaft to be attached and detached when the winding shaft is moved in a direction in which it is covered by the outer slat guide. According to this invention, by removing the outer slat guide, it is possible to remove the winding shaft from between the side plates.

[0035] The present invention is also characterized in that, in the above-mentioned electric shutter device, a control unit for controlling the rotation direction and rotation speed of the electric motor is built into the winding shaft, the outer slat guide is hollow with an internal storage space, the storage space of the outer slat guide stores communication equipment for connecting the control unit to an external device, and the downwardly facing portion is arranged so that the input / output terminals of the communication equipment are exposed to the outside, and the multiple slat guides have a lower slat guide arranged to include a portion covering the input / output terminals on the inner surface of the side plate. According to this invention, the input / output terminals are covered by the lower slat guide, so there is no risk of them being exposed to water such as rainwater.

[0036] The present invention is also characterized in that, in the above-mentioned electric shutter device, the outer slat guide has a connection portion with the side plate only at its base end close to the other end of the inner slat guide, and the tip end of the outer slat guide is engaged with the lower slat guide with its movement in the direction away from the side plate restricted. According to this invention, when the outer slat guide is attached to or detached from the side plate, it is only necessary to operate the connecting part at the base end, which is advantageous in terms of workability. Moreover, when the outer slat guide is attached to the side plate, the tip of the outer slat guide engages with the lower slat guide, so the tip of the outer slat guide will not inadvertently separate from the side plate.

[0037] The present invention is also characterized in that, in the above-mentioned electric shutter device, the lower slat guide has a connection portion with the side plate only in the portion close to the tip of the outer slat guide, and the portion close to the inner slat guide is engaged with one end of the inner slat guide with its movement in the direction away from the side plate restricted. According to this invention, when attaching or detaching the lower slat guide to or from the side plate, it is only necessary to operate the connecting portion provided in the portion adjacent to the outer slat guide, which is advantageous in terms of workability. Moreover, when the lower slat guide is attached to the side plate, the portion adjacent to the inner slat guide engages with the inner slat guide, so the lower slat guide will not inadvertently separate from the side plate. [Explanation of symbols]

[0038] 31 winding shaft, 32 shutter curtain, 32A winding space, 34 side plate, 34a inner surface, 36 bracket, 37 electric motor, 38 control unit, 40A, 40B, 40C slat guide, 40A3 inner storage space, 40A4 screw insertion hole, 40A5 engagement recess, 40AB inner and outer engagement portion, 40AC lower inner engagement portion, 40B3 outer storage space, 40B4 screw insertion hole, 40B5 outer engagement piece, 40B6 lower outer engagement piece, 40BC lower outer engagement portion, 40C3 lower storage space, 40C4 screw insertion hole, 40C5 lower inner engagement piece, 51 power cable, 51a connector, 52 connection cable, 53 communication device, 53a input / output terminal

Claims

1. An electric shutter device in which a winding shaft is disposed between the inner surfaces of two side plates, and a shutter curtain is wound and unwound around the winding shaft by driving an electric motor, A plurality of slat guides are arranged side by side in a circumferential direction on an inner surface of the side plate so as to surround the winding shaft, At least one of the plurality of slat guides is connected to the side plate via one end, and the other end is movable away from the side plate while the one end is connected to the side plate, An electric shutter device, characterized in that a cable connecting the electric motor is housed between the other end of the slat guide and the side plate.

2. 2. The electric shutter device according to claim 1, wherein a connector for detachably connecting the cable is housed between the other end of the slat guide and the side plate.

3. 2. The electric shutter device according to claim 1, wherein the electric motor is built into the winding shaft.

4. The plurality of slat guides include an inner slat guide provided to include a portion located on the inner surface of the side plate closer to the body than the winding shaft, 3. The electric shutter device according to claim 2, wherein the connector is accommodated between the other end of the inner slat guide and the side plate.

5. The plurality of slat guides include an outer slat guide provided to include a portion of the inner surface of the side plate that is located on the exterior side of the winding shaft, The electric shutter device as described in claim 4, characterized in that the outer slat guide has a connection portion with the side plate in a portion that is more outer than the winding space of the shutter curtain secured around the winding shaft.

6. The electric shutter device described in claim 5, characterized in that the outer slat guide has a connection portion with the side plate only at its base end portion close to the other end portion of the inner slat guide, and the base end portion is engaged with the inner slat guide in a state that limits the movement of the other end portion of the inner slat guide in a direction away from the side plate.

7. The electric shutter device described in claim 6, characterized in that the inner surfaces of the side plates are each provided with a shaft support portion that enables the winding shaft to be attached and detached when the winding shaft is moved in a direction in which it is covered by the outer slat guide.

8. A control unit for controlling a rotation direction and a rotation speed of the electric motor is built in the winding shaft, The outer slat guide is hollow and has an internal storage space. A communication device for connecting the control unit to an external device is accommodated in the accommodation space of the outer slat guide, and an input / output terminal of the communication device is exposed to the outside on a portion facing downward.

6. The electric shutter device according to claim 5, wherein the plurality of slat guides include a lower slat guide provided on the inner surface of the side plate so as to include a portion covering the input / output terminals.

9. The outer slat guide is provided with a connection portion with the side plate only at a base end portion adjacent to the other end portion of the inner slat guide, 9. The electric shutter device according to claim 8, wherein the tip of the outer slat guide is engaged with the lower slat guide in a state in which movement in a direction away from the side plate is restricted.

10. The electric shutter device described in claim 8, characterized in that the lower slat guide has a connection portion with the side plate only in a portion close to the tip of the outer slat guide, and the portion close to the inner slat guide is engaged with one end of the inner slat guide with its movement in a direction away from the side plate restricted.

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