JP2016141967A - Electric window blind device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric window blind device that facilitates slat length adjustment compared to conventional products.SOLUTION: A horizontal window blind B includes a head box 10 fixed on a window frame, a plurality of lifting/lowering devices 6 housed in the head box 10, and a control panel 20, a power source panel 30 and an encoder panel 40 housed in the head box 10. The lifting/lowering device 6 includes an edge part lifting/lowering device 6a located on an edge part side in a lengthwise direction of the head box 10. At least two out of the control panel 20, the power source panel 30 and the encoder panel 40 are located more outside in the lengthwise direction of the head box 10 than the edge part lifting/lowering device 6a.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electric blind device.

  2. Description of the Related Art Conventionally, there is known an electric blind device that can automatically operate raising and lowering a slat and adjusting an angle (see, for example, Patent Document 1).

  As this type of electric blind device, there is a conventional example shown in FIG. FIG. 8A is an enlarged front view of a main part showing a conventional horizontal blind.

  A conventional horizontal blind 100 is supported by a head box 101 fixed to a window frame, a lifting / lowering cord 102 suspended from the head box 101, a ladder cord 103 suspended from the head box 101, and a ladder cord 103. And a plurality of slats 104.

  In the head box 101, a lifting device 105 that raises or lowers the lifting / lowering cord 102, a control board 106 that controls various operations such as a motor (not shown), a control board 106 and a motor that convert external power into DC power. A power supply board 107 to be supplied to the motor and an encoder board 108 for detecting the rotation amount of the motor are accommodated.

  The control board 106 and the encoder board 108 are integrated and arranged outside the lifting device 105 (hereinafter referred to as the end lifting device 105a) located at the end of the head box 101. The power supply board 107 is disposed inside the end lifting device 105a.

  By the way, when the horizontal blind is installed on site, the slat is cut in accordance with the opening width of the window to adjust the slat length. At this time, the cutting of the slats can be performed up to a position corresponding to the end of the head box in the length direction.

JP 2009-7840 A

  However, in the conventional horizontal blind 100, the two boards, the integrated control board 106 and encoder board 108, are arranged on the outside in the length direction of the head box 101 with respect to the end lifting device 105a. The outer space of the device 105a is necessarily long. As a result, the head box 101 is lengthened, and the adjustment width of the slat length when the horizontal blind 100 is installed is narrowed. That is, in the horizontal blind 100, the slat 104 has a short cuttable dimension (L2 in FIG. 8A), so that there is a problem that it is difficult to adjust the slat length.

  The present invention has been developed from such a viewpoint, and an object thereof is to provide an electric blind device in which the slat length can be adjusted more easily than in the past.

  In order to solve such problems, the present invention provides a head box fixed to a window frame, a plurality of winding devices housed in the head box, a control board housed in the head box, An electric blind device comprising a power supply board and an encoder board, wherein the winding device has an end winding device located on an end side in a length direction of the head box, and the control At least two of the substrate, the power supply substrate, and the encoder substrate are arranged on the inner side in the longitudinal direction of the head box than the end winding device.

  According to the present invention, at least two of the control board, the power supply board, and the encoder board are disposed on the inner side in the length direction of the head box with respect to the end winding device. As a result, the outer space of the end winder can be made shorter than in the prior art. Thereby, since the dimension which can cut | disconnect a slat becomes long, it becomes easy to adjust slat length.

The control board, the power supply board, and the encoder board are preferably snap-engaged with an inner surface of the head box. In this case, an engagement member that snap-engages with the inner surface of the head box is provided, and the control board, the power supply board, and the encoder board snap-engage with the inner surface of the head box via the engagement member. Good.
If it does in this way, the assembling property of each board | substrate with respect to a head box can be improved.

It is preferable that the engaging member has a pair of arm portions that engage with both side portions in the width direction of the head box and a connecting portion that connects the lower ends of the pair of arm portions.
If it does in this way, the position shift of the horizontal direction of each board | substrate with respect to a head box can be suppressed by a pair of arm part.

It is preferable that a part of the outer surface of the arm portion is formed with a notch portion that is separated from a side portion in the width direction of the head box. In this case, wiring is passed between the notch and the side of the head box in the width direction.
If it does in this way, even if it is a case where an engaging member is used, wiring can be installed in a head box without trouble.

It is preferable that the head box has a protruding portion that protrudes inward in the width direction at a side portion in the width direction. In this case, the upper end portion of the arm portion may be engaged with the lower end portion of the ridge portion, and the lower end portion of the connecting portion may be engaged with the bottom portion of the head box.
If it does in this way, position shift of the up-and-down direction of each substrate to a head box can be controlled.

The engaging member preferably has a rib.
In this way, the strength and rigidity of the engaging member can be increased.

It is preferable that a corner portion where the arm portion and the connecting portion intersect is formed in a tapered shape.
If it does in this way, the intensity | strength and rigidity of the corner | angular part where an arm part and a connection part cross can be raised.

The power supply board preferably has an electric shock prevention member fixed to a side portion of the head box in the width direction.
In this way, since the power supply board can be fixed to the side portion in the width direction of the head box using the electric shock prevention member, there is no need to use another fixing member, and the number of parts is reduced and the cost is reduced. be able to.

The control board has a connector, and the connector is preferably exposed to the outside from the bottom of the head box.
In this way, software can be rewritten through the connector from the lower side of the head box without removing the head box from the window frame, so that maintainability can be improved. Incidentally, since the slat is supported by a plurality of left and right ladder codes on the center side of the head box, it is difficult to move the slat, and if a connector is arranged on the center side of the head box, software rewriting work becomes complicated. On the other hand, according to the present invention, since the connector is arranged on the end side of the head box that is less restricted by the ladder code than the center side of the head box, it is easy to move the slats and software rewriting work is facilitated. .

The control board is disposed on the outside in the length direction of the head box with respect to the end winding device, and the encoder board is disposed on the length direction inside of the head box with respect to the end winding device. In addition, it is preferably arranged in the middle of the drive shaft driven by the motor.
In this way, the control board and the encoder board can be separated, and the encoder board can be arranged using the empty space in the middle of the drive shaft, so that the head box can be made shorter than before.

  According to the present invention, it becomes easier to adjust the slat length than in the past.

It is a front view of the horizontal blind concerning this embodiment. It is a principal part enlarged front view of FIG. It is a sectional side view which shows the state which installed the engaging member and encoder board | substrate of this embodiment in the head box. It is front sectional drawing which shows the state which installed the engaging member and encoder board | substrate of this embodiment in the head box. It is a figure which shows the structure of the connector of this embodiment, (a) is an arrow directional view from the arrow Y shown in FIG. 2, (b) is VV sectional drawing of (a). It is a sectional side view which shows the structure of the earth | ground of this embodiment. It is a figure which shows the engaging member of this embodiment, (a) is the perspective view seen from the front side, (b) is the perspective view seen from the back side. (A) is a principal part enlarged front view which shows the conventional horizontal blind, (b) is a principal part enlarged front view which shows the horizontal blind of this embodiment.

  Embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In the present embodiment, a case where the present invention is applied to a horizontal blind will be described as an example. FIG. 1 is a front view of a horizontal blind according to the present embodiment.

  As shown in FIG. 1, the horizontal blind B includes a head box 10 fixed to a window frame, a lifting tape 1 suspended from the head box 10, a ladder cord 2 suspended from the head box 10, and a lifting / lowering tape 1. A bottom rail 3 attached to the lower end of the tape 1 and a plurality of slats 4 supported by a ladder cord 2 are provided. The ladder cord 2 is disposed in a pair of front and rear sides on the indoor side and the outdoor side. A plurality of slats 4 are supported at equal intervals in the vertical direction between the front and rear ladder cords 2 and 2.

<Head box>
The head box 10 has an upper end portion and a box body 11 that opens at both ends in the length direction, a box cover 12 that closes the upper end opening of the box body 11, and an end opening in the length direction of the box body 11. And a box cap 13.

As shown in FIG. 3, the box body 11 is formed of an aluminum extruded profile that has a substantially U-shape in a side sectional view. The box body 11 is extended with the same cross-sectional shape in the length direction.
The box body 11 has a bottom portion 11a, side portions 11b and 11b erected on both ends in the width direction of the bottom portion 11a, and an extension extending inward in the width direction from the upper end portions of the side portions 11b and 11b. It is comprised by wall part 11c, 11c.

  The bottom portion 11a extends horizontally and is a portion on which an engagement member 50 described later is placed. The bottom portion 11a has a portion that is continuous with the side portion 11b, and has a substantially hat shape.

  The side portion 11b extends vertically and is a portion to which the engaging member 50 is engaged. On the upper end portion side of the side portion 11b, a ridge portion 11d is formed to protrude inward in the width direction. The protruding portion 11d is a screw hole for fixing the box cap 13 to the box body 11 and is formed of a pair of wall portions that are positioned below the extending wall portion 11c and are spaced apart from each other in the vertical direction. . The tips of the upper and lower wall portions are curved so as to approach each other toward the inner side in the width direction. A screw (not shown) for connecting the box body 11 and the box cap 13 is inserted into the space between the upper and lower wall portions and the side portion 11b.

  The extending wall portion 11c is a portion where the box cover 12 is locked. The tip of the extending wall portion 11c is bent at a right angle and extends downward.

  The box cover 12 is formed of an aluminum extruded profile, and extends in the length direction with the same cross-sectional shape. The box cover 12 has two substantially semicircular grooves 12a and 12a that are recessed downward. A locking protrusion 12b that protrudes outward is formed on the outer peripheral surface of the wall portion that forms the groove 12a. In the present embodiment, the box cover 12 is fixed to the box body 11 by locking the locking protrusion 12b to the tip of the extending wall portion 11c from below.

  As shown in FIG. 1, the head box 10 includes a motor 5, a plurality of lifting devices 6, a plurality of slat drive devices 7, a control board 20, a power supply board 30, an encoder board 40, and a plurality of parts. The engaging member 50 is accommodated. Each board | substrate 20-40 of this embodiment is isolate | separated from each other.

<Motor>
The motor 5 applies a driving force to the lifting device 6 and the slat driving device 7. The motor 5 is installed in the vicinity of the left end of the head box 10 in FIG. The output shaft of the motor 5 is connected to one end of the drive shaft 8 (the left end in FIG. 1). Thereby, the drive shaft 8 rotates in conjunction with the rotation of the motor 5.

<Elevating device>
The lifting device 6 is a device for lifting and lowering the bottom rail 3 and each slat 4. The elevating device 6 is installed at an interval in the length direction of the head box 10. In the following description, among the plurality of lifting devices 6, the lifting device 6 positioned at the end of the head box 10 (near the right end in FIG. 1) is referred to as an end lifting device 6a. The lifting device 6 corresponds to the winding device in the claims, and the end lifting device 6a corresponds to the end winding device in the claims.

<Slat drive device>
The slat drive device 7 is a device for tilting each slat 4. The slat drive device 7 is adjacent to the lifting device 6 and is installed at an interval in the length direction of the head box 10.

  As shown in FIG. 2, the lifting device 6 has a winding pulley 6 b that is rotatably supported. The upper end of the lifting tape 1 is fixed to the take-up pulley 6b. The slat drive device 7 has a suspension pulley 7a that is supported to be tiltable. A chilled spring 7b is mounted on the outer peripheral surface of the suspension pulley 7a. The upper end portion of the ladder cord 2 is fixed to the chilled spring 7b. A drive shaft 8 is inserted through the take-up pulley 6b and the suspension pulley 7a.

<Control board>
The control board 20 is disposed at the end opposite to the motor 5. The control board 20 shown in FIG. 2 is arranged on the outer side in the length direction of the head box 10 with respect to the end lifting device 6a (lifting tape 1). The control board 20 includes a communication board, a switch input board, a setting board, a motor control board, an encoder signal processing board, and the like, and performs various controls. The control board 20 is snap-engaged with the inner surface of the head box 10 via the engaging member 50.

  As shown in FIGS. 5A and 5B, the control board 20 has a connector 21 for rewriting software, a lamp 22 for displaying an operating state, and a setting for switching the setting of the control board 20. And a switch 23. The connector 21, the lamp 22, and the switch 23 are arranged in this order in the length direction of the head box 10 on the lower surface of the control board 20.

  The connector 21, the lamp 22 and the switch 23 are biased to one side in the width direction. An opening 11e that exposes all of the connector 21, the lamp 22, and the switch 23 to the outside is formed in the bottom 11a of the box body 11. The opening 11e has a rectangular shape extending in the length direction.

<Power supply board>
The power supply substrate 30 shown in FIG. 2 is arranged on the inner side in the length direction of the head box 10 than the end lifting device 6a. The power supply board 30 includes an AC / DC conversion board and the like, converts external power supplied from an external power source into DC power, and supplies the DC power to the control board 20 and the motor 5. The power supply board 30 is snap-engaged with the inner surface of the head box 10 via the engaging member 50.

  As shown in FIG. 6, the power supply substrate 30 has a ground 31 that functions as an electric shock prevention member. The ground 31 of the present embodiment is made of an L-shaped metal fitting. The ground 31 includes a box-side fixing portion 31a that extends vertically and a substrate-side fixing portion 31b that extends inward in the width direction from the lower end of the box-side fixing portion 31a.

  The box-side fixing portion 31a is formed with a through-hole 31c penetrating horizontally. Screws N for connecting the box side fixing portion 31a and the side portion 11b are inserted into the through holes 31c and the through holes 11f formed in the side portion 11b of the box side fixing portion 31a.

  The board-side fixing part 31b is in contact with the lower surface of the main body of the power supply board and is disposed in a state of being spaced upward from the bottom part 11a. A through-hole 31d penetrating vertically is formed in the substrate side fixing portion 31b. Screws N for coupling the box-side fixing part 31a and the power supply board main body are inserted into the through-hole 31d of the box-side fixing part 31a and the through-hole 30a formed at the end of the power supply board main body.

<Encoder board>
The encoder substrate 40 shown in FIG. 2 is disposed on the inner side in the length direction of the head box 10 than the end lifting device 6a. The encoder board 40 is a sensor that detects the amount of rotation of the motor 5 and outputs it to the control board 20. The encoder board 40 is disposed adjacent to the inside of the power board 30 in the length direction. The drive shaft 8 passes through the encoder board 40. The encoder board 40 is disposed in the middle of the drive shaft 8. That is, the encoder board 40 is disposed using a free space in the middle of the drive shaft 8 (between the two lifting devices 6 and 6). The encoder board 40 is snap-engaged with the inner surface of the head box 10 via the engaging member 50.

  Next, the engaging member 50 will be described with reference to FIGS. 3, 4, 7 (a) and 7 (b). In addition, since the engaging member 50 fixed to each board | substrate 20-40 is the same, in the following description, the engaging member 50 fixed to the encoder board | substrate 40 is demonstrated.

<Engagement member>
As shown in FIG. 3, the engaging member 50 is a resin member that snap-engages with the inner surface of the box body 11. The engaging member 50 has a pair of arm portions 51, 51 that engage with the side portions 11 b, 11 b in the width direction of the box body 11, and a connecting portion 52 that connects the lower ends of the pair of arm portions 51, 51. In addition, it has a U-shaped side sectional view.

  The engaging member 50 presses the side portion 11 b by the elasticity of the boundary portion between the arm portion 51 and the connecting portion 52. Thereby, the position shift of the engaging member 50 and the encoder board 40 with respect to the head box 10 in the lateral direction can be suppressed. Further, the engaging member 50 is sandwiched and sandwiched between the protruding portion 11d and the bottom portion 11a. Thereby, the position shift of the engaging member 50 and the encoder board 40 with respect to the head box 10 in the vertical direction can be suppressed.

  When the engaging member 50 fixed to the encoder board 40 is installed in the box body 11, the upper end opening of the box body 11 is widened outward using a dedicated jig, and the arm portions 51, 51. The encoder board 40 and the engaging member 50 are inserted into the box main body 11 from the upper end opening and installed in a state where they are elastically deformed so as to shrink inward in the width direction.

  In the arm portion 51 and the connecting portion 52, a cutout portion 53 that is separated from the side portion 11b is formed on the outer surface facing the side portion 11b. A space for passing the wiring 9 is formed between the cutout portion 53 and the side portion 11b. The notch 53 is formed from the lower end of the outer surface of the connecting portion 52 to the vicinity of the upper end of the outer surface of the arm 51. A corner portion 54 where the inner side surface of the arm portion 51 and the upper surface of the connecting portion 52 intersect is formed in a tapered shape.

  At the upper end of the outer surface of the arm portion 51, an engaging portion 55 is formed to project outward. The engaging portion 55 is formed above the notch portion 53 and is in contact with and engaged with the ridge portion 11d and the side portion 11b. Specifically, the upper surface of the engaging portion 55 is in contact with and engaged with the lower surface of the lower side wall portion of the protrusion 11d, and the outer surface of the engaging portion 55 is in contact with the inner surface of the side portion 11b. Match.

  As shown in FIG. 7A, a first rib 56 is formed on one side surface 50a of the engaging member 50 (one side surface 50a located in the length direction of the head box 10) to increase strength and rigidity. ing. The first rib 56 protrudes from the one side surface 50a. The first rib 56 is formed across the upper edge of the arm portion 51 and the edge of the engaging portion 55.

  As shown in FIG. 7B, a second rib 57 for enhancing strength and rigidity is formed on the other side surface 50b opposite to the one side surface 50a of the engaging member 50. The second rib 57 protrudes in the opposite direction from the first rib 56 from the other side surface 50b. The second rib 57 is formed along the edge of the inner surface of the arm portion 51. The lower end portion of the second rib 57 extends below the lower end portion of the arm portion 51 and reaches the connecting portion 52.

  Cylindrical boss portions 58 and 58 extending in the vertical direction are formed on the other side surface 50b on the connecting portion 52 side. The boss portion 58 bulges from the other side surface 50b. The boss portion 58 is provided on the lower and outer corners of the connecting portion 52. As shown in FIG. 4, the lower surfaces of the connecting portion 52 and the boss portion 58 are in contact with and engaged with the inner surface of the bottom portion 11a. The flange portion 41 of the encoder substrate 40 is placed on the boss portion 58. A screw N for coupling the engaging member 50 and the encoder board 40 is inserted into the boss part 58 of the engaging member 50 and the flange part 41 of the encoder board 40.

  The horizontal blind B according to the embodiment of the present invention is basically configured as described above. Next, the function and effect will be described with reference to FIGS. FIG. 8A is an enlarged front view of the main part showing a conventional horizontal blind, and FIG. 8B is an enlarged front view of the main part showing the horizontal blind of the present embodiment.

  First, a conventional horizontal blind 100 will be described with reference to FIG. In the conventional horizontal blind 100 shown in FIG. 8A, the two integrated substrates, the control substrate 106 and the encoder substrate 108, are arranged on the outside in the length direction from the end lifting device 105a. For this reason, the outer space of the end lifting device 105a becomes longer, and the slatable dimension of the slat 104 becomes L2.

  On the other hand, in the horizontal blind B of the present embodiment, the two substrates of the power supply substrate 30 and the encoder substrate 40 are arranged on the inner side in the length direction than the end lifting device 6a. That is, only the control board 20 is disposed on the outer side in the length direction of the end lifting device 6a. Further, the encoder board 40 separated from the control board 20 is arranged in the middle of the drive shaft 8.

  Thereby, since the empty space in the middle of the drive shaft 8 can be utilized, the head box 10 can be made shorter than the conventional example. As a result, the outer space of the end lifting device 6a can be made shorter than in the conventional example, and the slatable dimension of the slat 104 is L1.

  The cuttable dimension L1 is longer than the cuttable dimension L2. That is, in this embodiment, the slat length is increased by the difference L3 (L1−L2 = L3) between the severable dimensions L1 and L2, and the adjustment width of the slat length is widened, compared to the conventional example. It will be easier to make adjustments.

  In addition, when the control board 20 and the encoder board 40 are separated, the wiring 9 that connects both the boards 20 and 40 is required. However, in the present embodiment, the engagement member 50 is provided with a notch 53 and the wiring 9 passes therethrough. Therefore, the wiring 9 can be installed without hindrance even if the separation structure is adopted. In other words, since the cutout portion 53 through which the wiring 9 is passed is provided, the separated encoder substrate 40 can be disposed on the inner side in the length direction of the end lifting device 6a (in the middle of the drive shaft 8).

  Moreover, according to this embodiment, since each board | substrate 20-40 snap-engages with the inner surface of the head box 10 via the engaging member 50, the assembly | attachment property of each board | substrate 20-40 with respect to the head box 10 is improved. Can be improved.

  Further, according to the present embodiment, the pair of arm parts 51 and 51 press the side parts 11 b and 11 b by the elasticity of the boundary part with the connecting part 52. Thereby, the position shift of the engaging member 50 with respect to the head box 10 and each board | substrate 20-40 can be suppressed.

  Moreover, according to this embodiment, the engaging member 50 is inserted | pinched between the protrusion part 11d and the bottom part 11a, and is clamped. Thereby, the position shift of the engaging member 50 with respect to the head box 10 and the vertical direction of each board | substrate 20-40 can be suppressed.

  Further, according to the present embodiment, the notch 53 is formed on the outer surface of the arm 51, and the wiring 9 is passed between the notch 53 and the side 11b. Even in this case, the wiring 9 can be installed in the head box 10 without any trouble.

  According to the present embodiment, the first rib 56 is formed on the arm portion 51 and the engaging portion 55, and the second rib 57 is formed on the arm portion 51 and the connecting portion 52. Moreover, the corner | angular part 54 where the inner surface of the arm part 51 and the upper surface of the connection part 52 cross is formed in a taper shape. Thereby, the strength and rigidity of each part of the engaging member 50 can be increased.

  Moreover, according to this embodiment, since the power supply board 30 can be fixed to the side portion 11b using the ground 31, it is not necessary to use another fixing member, and the number of parts can be reduced and the cost can be reduced. Can do.

  Further, according to the present embodiment, the connector 21 of the control board 20 is exposed to the outside through the opening 11e of the bottom portion 11a, so that the head box 10 can be removed from the lower side without removing the head box 10 from the window frame. Software can be rewritten through the connector 21 and the maintainability can be improved.

In general, the substrate is often fixed to the bottom of the head box with a screw. In this case, a cover is separately provided below the bottom to conceal the exposure of the screw. In such a double bottom structure, even if a hole is made in the bottom, it is covered with a cover, so that the connector cannot be exposed from the lower side of the head box. If a hole is made in the cover, the purpose of the cover is lost.
On the other hand, in this embodiment, since each board | substrate 20-40 is snap-engaged to the head box 10, there is no fixing screw in the bottom part 11a, and the cover for screw exposure prevention becomes unnecessary. Thereby, the opening part 11e is provided in the bottom part 11a, and it becomes possible to expose the connector 21 from the lower side of the head box 10 through the opening part 11e.

  Since the slat 4 is supported by the left and right ladder cords 2 on the center side of the head box 10, it is difficult to move the slat 4, and if the connector 21 is arranged on the center side of the head box 10, software rewriting work is complicated. Become. On the other hand, according to the present embodiment, the connector 21 is arranged on the end side of the head box 10 that is less restricted by the ladder code 2 than the center side of the head box 10, so that the slat 4 can be moved easily, Rewriting work becomes easy.

The embodiment of the present invention has been described above, but the present invention is not limited to this, and can be appropriately changed without departing from the gist of the present invention.
In the present embodiment, the case where the two substrates of the power supply substrate 30 and the encoder substrate 40 are arranged on the inner side in the length direction than the end lifting device 6a is exemplified. However, all the substrates 20 to 40 are disposed from the end lifting device 6a. May also be arranged on the inside in the length direction. Moreover, you may select suitably the two board | substrates arrange | positioned in the length direction inner side rather than the edge part raising / lowering apparatus 6a from the board | substrates 20-40. Furthermore, the two substrates disposed on the inner side in the length direction than the end lifting device 6a may be appropriately selected from the substrates constituting each of the substrates 20 to 40. For example, the switch input board and the motor control board of the control board 20 may be arranged on the inner side in the length direction than the end lifting device 6a.

  In this embodiment, although the case where each board | substrate 20-40 was arrange | positioned separately was illustrated, you may arrange | position two board | substrates integrally. For example, the power supply board 30 and the encoder board 40 may be integrated and arranged on the inner side in the length direction than the end lifting device 6a.

  In the present embodiment, the present invention is applied to the horizontal blind B provided with the tape type lifting device 6, but the present invention may be applied to the horizontal blind B provided with the cord type lifting device 6.

B Horizontal blind (electric blind device)
DESCRIPTION OF SYMBOLS 10 Head box 11 Box main body 11a Bottom part 11b Side part 11d Projection part 11e Opening part 20 Control board 21 Connector 30 Power supply board 31 Ground (electric shock prevention member)
40 Encoder board 50 Engagement member 51 Arm part 52 Connection part 53 Notch part 54 Corner part 55 Engagement part 56 1st rib 57 2nd rib 5 Motor 6 Lifting apparatus (winding apparatus)
6a End lifting device (end winding device)
8 Drive shaft 9 Wiring

Claims (10)

A headbox fixed to the window frame;
A plurality of winding devices housed in the head box;
An electric blind device comprising a control board, a power supply board and an encoder board housed in the head box,
The winding device has an end winding device located on the end side in the length direction of the head box,
At least two of the control board, the power supply board, and the encoder board are arranged on the inner side in the length direction of the head box with respect to the end winding device.   The electric blind device according to claim 1, wherein the control board, the power supply board, and the encoder board are snap-engaged with an inner surface of the head box. An engagement member that snap-engages with the inner surface of the head box;
3. The electric blind device according to claim 1, wherein the control board, the power supply board, and the encoder board are snap-engaged with an inner surface of the head box via the engagement member.   The engagement member includes a pair of arm portions that engage with both side portions in the width direction of the head box, and a connecting portion that connects lower ends of the pair of arm portions. Item 4. The electric blind device according to Item 3. A part of the outer surface of the arm part is formed with a notch that is separated from a side part in the width direction of the head box,
5. The electric blind device according to claim 4, wherein a wiring is passed between the cutout portion and a side portion in the width direction of the head box. The head box has a protrusion that protrudes inward in the width direction at the side in the width direction,
The upper end portion of the arm portion is engaged with the lower end portion of the ridge portion,
The lower end of the joint is engaged with the bottom of the head box,
The electric blind device according to claim 4 or 5, wherein the engagement member has a rib.   The electric blind device according to any one of claims 4 to 6, wherein a corner portion where the arm portion and the connecting portion intersect is formed in a tapered shape.   8. The electric blind device according to claim 1, wherein the power supply board includes an electric shock prevention member fixed to a side portion in a width direction of the head box. 9. The control board has a connector,
The electric blind device according to any one of claims 1 to 8, wherein the connector is exposed to the outside from a bottom portion of the head box. The control board is disposed on the outer side in the length direction of the head box than the end winding device,
2. The encoder board according to claim 1, wherein the encoder board is arranged on the inner side in the longitudinal direction of the head box with respect to the end winding device, and is arranged in the middle of a drive shaft driven by a motor. The electric blind device according to any one of claims 1 to 9.

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