JP7614079B2 - Electric shutter device - Google Patents

Description

The present invention relates to an electric shutter device.

In an electric shutter device that uses an electric motor to wind and unwind a shutter curtain around a winding shaft, 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 around 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 a storage space between the side plate and the slat guide, and a cable is provided in this storage space to prevent the cable from coming into contact with the shutter curtain (see, for example, Patent Document 1).

JP 2010-196358 A

With the electric shutter device described above, the slat guide makes it possible to prevent contact between the cable and the shutter curtain. However, when laying the cable, the slat guide must be removed from the side panel, which can complicate the installation and removal of the electric shutter device.

In view of the above, the present invention aims to provide an electric shutter device that allows cables to be routed without complicating installation and removal operations.

In order to achieve the above object, the electric shutter device of the present invention is an electric shutter device in which a winding shaft is disposed 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 in parallel in the circumferential direction on the inner surfaces of the side plates 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 while the other 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 the present invention, the slat guide that houses the cable has one end connected to the side plate and the other end that can move away from the side plate. This makes it possible to install the cable without releasing the connection between the one end of the slat guide and the side plate, preventing the installation and removal operations from becoming complicated.

1 is a vertical cross-sectional view of an electric shutter device according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the electric shutter device shown in FIG. 1 as viewed from the outside of the room. 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 showing one of the side plates that make up the shutter case, and (c) is an oblique view showing the other side plate that makes up the shutter case. 2A shows the components of the electric shutter device shown in FIG. 1, where FIG. 2A is an oblique view of the winding shaft with a winding roll disposed around it, and FIG. 2B is an enlarged oblique view of the main part of the motor case which is one end of the winding shaft. 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 . 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 state in which the lower slat guide has been removed. 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. 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. FIG. 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. FIG. 2 is a perspective view of a side panel and a plurality of slat guides of the electric shutter device shown in FIG. 1, with a portion cut away along a vertical plane, as viewed from the outside of the room. FIG. 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.

The following describes in detail a preferred embodiment of the electric shutter device according to the present invention with reference to the attached drawings. For convenience, the terms "prospect direction" and "finding direction" may be used below. 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 referred to as a "prospect surface." The "finding direction" is the 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 direction along 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."

Figures 1 and 2 show an electric shutter device according to an embodiment of the present invention. The electric shutter device illustrated 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 above the upper frame 11 of the fitting frame 10 to which the electric shutter device is attached. The shutter box 20 is configured to house and support the electric shutter device, and is configured in a horizontally elongated rectangular 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.

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 with side plates 34 provided on both sides of the back plate 33 so as to face each other. The upper side and the outdoor side between the left and right side plates 34 of the shutter case 30 are detachably covered by a front cover 35a. A bracket (shaft support part) 36 for supporting the winding shaft 31 is attached to the opposing parts 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.

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 the brackets 36. More specifically, as shown in FIG. 3(b) and FIG. 3(c), the brackets 36 each have a support wall portion 36a and two side wall portions 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 the support opening 36c between the side wall portions 36b opening obliquely upward toward the outside of the room. The mutual distance between the two side wall portions 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 a width substantially the same as that of the two side walls 36b so as to open on the circumferential surface and end surface, as shown in FIG. 4B. 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 penetrates between the bracket 36 and the shaft 31a and the connecting pin (not shown) that penetrates 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 walls 36b.

As shown in FIG. 1, the shutter curtain 32 is formed by connecting multiple slats 32a to each other, and one end is connected to the winding roll 39. When the winding roll 39 rotates around the winding shaft 31 by the drive 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 each provided with a guide rail 13 on the outside of the room. The shutter curtain 32 unwound from the winding roll 39 has both edges inserted into the guide rail 13, and can close the opening of the frame body 10. As shown in FIG. 1, a winding space 32A is secured 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 gap is secured between the side plates 34 of the shutter case 30 than between the shutter curtains 32, and the shutter curtains 32 wound around the winding roll 39 do not come into contact with the inner surfaces 34a of the side plates 34. The reference numeral 35b in FIG. 2 denotes a side cover that covers the outer surface of the portion of the side plate 34 that protrudes outside the room beyond the vertical frame 12.

As shown in FIG. 5, one side plate 34 (the right side plate when viewed from the outside 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, and 40C is molded from resin.

As shown in Figures 5 to 11, the inner slat guide 40A is a semicircular arc that covers the portion of the inner surface 34a of the side plate 34 between the back plate 33 and an imaginary vertical plane that passes 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 portion that is arranged so as to be approximately 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 side plate 34 and the inner slat guide 40A. The inner slat guide 40A has a screw insertion hole (connecting portion) 40A4 only at the corner 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 that is more radially outward than 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.

As is clear from the figure, this 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 storage 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 storage 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 housed in the inner storage space 40A3 by extending almost horizontally from the portion located on the back plate 33 side of the motor case 31b toward the back plate 33, then extends upward and further almost horizontally toward the outside, with the extended end being fitted into the connector 51a of the power cable 51.

As shown in Figures 5 to 11, the outer slat guide 40B is an arc-shaped guide that covers the upper part of the exterior side that is 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. In other words, the outer slat guide 40B is provided at a position that covers the portion that is an extension of the support opening 36c between the side wall portions 36b in the bracket 36 provided on the side plate 34. In this embodiment, the outer slat guide 40B is applied, which has an attachment plate portion 40B1 that contacts the side plate 34 and a guide portion 40B2 that faces the other side plate 34, and forms an outer storage space (storage 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 a screw insertion hole (connecting portion) 40B4 only at the corner on the upper 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 insertion hole 40B4. The screw insertion hole 40B4 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 the shutter curtains 32 are wound on the winding roll 39.

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 portion 40AB engage with each other to limit 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. In addition, 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 that passes through the axis of the winding shaft 31, and the inner storage space 40A3 and the outer storage space 40B3 are mutually connected.

As shown in Figures 5 to 11, a communication device 53 is arranged in the outer storage space 40B3 of the outer slat guide 40B to connect 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 storage space 40B3 by fitting the connector 54a of the communication cable 54 extending from the motor case 31b to the communication device 53. In addition, 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 arranged in the outer storage space 40B3 through the upper end of the inner storage space 40A3 and is connected to the communication device 53 inside the outer storage space 40B3.

The lower slat guide 40C is rectangular and covers the lower 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 underside 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 gaps, 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 gaps. 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 portion arranged so as to be approximately parallel to the inner surface 34a of the side plate 34. The lower peripheral wall portion 40C2 protrudes from the 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 approximately the same plane as the inner surface portion 40A1, and forms a lower storage space 40C3 between the side plate 34 and the lower surface portion 40C1. A maintenance cable 56 extending from the motor case 31b is housed in the lower storage space 40C3. The maintenance cable 56 is for connecting a terminal device for maintenance (not shown), and the extended portion including the connector 56a is disposed in the inner storage space 40A3.

The lower slat guide 40C has a screw hole (connecting part) 40C4 only in the part 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 that is more outer than 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.

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 portion 40AC engage with each other to limit 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 FIG. 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 storage space 40A3 of the inner slat guide 40A and engage 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 the lower slat guide 40B to limit the movement of the lower end 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 storage space 40C3 of the lower slat guide 40C and engage with the lower surface portion 40C1.

In the electric shutter device configured as described above, when the operation is performed from inside the building through a remote control or an indoor terminal device (not shown), the electric motor 37 rotates through the control unit 38 in a direction and at a rotation speed according to the operation. 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, there is no risk of the shutter curtain 32 coming into contact with these cables 51, 52, 54, 55, and 56, and there is no risk of problems such as disconnection. Moreover, the three slat guides 40A, 40B, and 40C can be attached and detached from the side plate 34 by simply screwing in the screw S. Therefore, although the three slat guides 40A, 40B, and 40C are provided on the side plate 34, there is no risk of the manufacturing and maintenance work becoming complicated.

In addition, the connector 51a connecting the power cable 51 and the electric motor 37 is disposed at the upper end of the inner storage space 40A3 provided between the inner slat guide 40A and the side plate 34. Therefore, in the state shown in FIG. 11(b), it is possible to install the power cable 51 and the connection cable 52 and to attach and detach the connector 51a between them by separating the upper end of the inner slat guide 40A from the side plate 34 while keeping the screw S connecting the inner slat guide 40A and the side plate 34 screwed in. 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 separating 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 to a state in which 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.

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

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

In addition, in the above-described embodiment, an electric motor is incorporated in the winding shaft, but this is not necessarily limited to this.

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 side by side 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.
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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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 part, 40AC Lower inner engagement part, 40B3 Outer storage space, 40B4 Screw insertion hole, 40B5 Outer engagement piece, 40B6 Lower outer engagement piece, 40BC Lower outer engagement part, 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 (10)

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. The electric shutter device according to claim 1, characterized in that a connector for detachably connecting the cable is housed between the other end of the slat guide and the side plate. The electric shutter device according to claim 1, characterized in that the electric motor is built into the winding shaft. 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. 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. The electric shutter device according to claim 5, characterized in that the outer slat guide has a connection with the side plate only at its base end portion adjacent 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 in which the movement of the other end portion of the inner slat guide in a direction away from the side plate is restricted. The electric shutter device according to claim 6, characterized in that the inner surfaces of the side plates are provided with shaft support parts that allow the winding shaft to be attached and detached when the winding shaft is moved in a direction covered by the outer slat guide. 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. 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. The electric shutter device according to claim 8, characterized in that the lower slat guide has a connection with the side plate only in a portion adjacent to the tip of the outer slat guide, and the portion adjacent to the inner slat guide is engaged with one end of the inner slat guide in a state in which movement in a direction away from the side plate is restricted.

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