Electric blind

Abstract

To provide an electric blind which is easy in wiring of an electronic component mounted in a head box via a fixing member.SOLUTION: An electric blind includes a fixing member 3 fixed in a head box, and an electronic component 4 attached to the fixing member 3 for easy pulling out of wiring 62 from the fixing member 3, in which the fixing member 3 has at least one or more wiring holding parts 63, 64 capable of holding the wiring 62 of the electronic component 4 on a side surface of the fixing member 3 in a state where the electronic component 4 is attached.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to motorized blinds. [Background technology]

[0002] Conventionally, there is known an electric blind in which a tilter cover fitted to the top of the tilter case is provided with pins and grooves for looping around and holding excess slack in the wiring, as disclosed in the following Patent Document 1. Such an electric blind can suppress slack in the wiring passing near the tilter cover inside the head box, preventing the slack wiring from coming into contact with the tilter shaft and generating abnormal noise or interfering with the tilting of the slats. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 7-19590 Summary of the Invention [Problem to be solved by the invention]

[0004] However, unlike the configuration of the motorized blind disclosed in Patent Document 1, in the case of a configuration in which electronic components are attached inside a head box via a fixing member, the wiring of the electronic components is pulled out from the fixing member, so that the wiring may become tangled when packaging the components, or may be pinched between the head box and the fixing member when the fixing member is attached inside the head box. Therefore, a technology is desired that allows the wiring of the electronic components attached inside the head box via the fixing member to be conveniently handled.

[0005] The present invention has been made in consideration of such problems, and aims to provide an electric blind that allows for convenient handling of wiring of electronic components attached inside the head box via fixing members. [Means for solving the problem]

[0006] The inventor believed that the above-mentioned problems could be solved by configuring the fixing member so that the wiring of the electronic components could be held on the side of the fixing member, and based on this, he invented a new electric blind as described below.

[0007] (1) The electric blind according to the present invention is an electric blind comprising a fixing member fixed within a head box and an electronic component attached to the fixing member so that wiring is pulled out from the fixing member, the fixing member having at least one wiring holding portion capable of holding the wiring of the electronic component on a side of the fixing member when the electronic component is attached.

[0008] (2) In the above (1), it is preferable that the fixing member has a first wall portion that stands along the longitudinal direction of the head box, and the wiring holding portion has at least one first wiring holding portion formed on the first wall portion and holds the wiring so that it can be routed along the longitudinal direction of the first wall portion within the gap between the fixing member and the head box.

[0009] (3) In the above (2), it is preferable that the fixing member has a second wall portion that stands up along the short side direction of the head box, and the wiring holding portion has at least one second wiring holding portion formed on the second wall portion, and bends the wiring routed from the first wall portion along the second wall portion in the vertical direction of the second wall portion to hold it so that it can be routed to the second wall portion.

[0010] (4) In the above (2) or (3), it is preferable that the wiring holding portion has at least one third wiring holding portion formed on the first wall portion and holding, within the gap, other wiring different from the wiring of the electronic component so that it can be routed along the longitudinal direction of the first wall portion.

[0011] (5) In any of (1) to (4) above, the shielding material may further include a winding drum to which a lifting member for raising and lowering the shielding material is connected so as to be capable of being wound and unwound, and an obstacle detection mechanism capable of detecting contact between an obstacle and the bottom rail based on slack in the lifting member when the shielding material is lowered, wherein the fixed member is a drum receiver for rotatably supporting the winding drum, and the electronic component is preferably a switch for stopping rotation of a motor for rotating the winding drum when the obstacle detection mechanism is activated. Effect of the Invention

[0012] The motorized blind according to the present invention is configured so that the wiring of the electronic components can be held on the side surface of the fixing member, thereby making it possible to provide a motorized blind that allows convenient handling of the wiring of the electronic components that are attached to the inside of the head box via the fixing member. [Brief description of the drawings]

[0013] [Figure 1] 1 is a schematic front view showing an electric blind according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic perspective view showing a fixing member of the motorized blind according to the first embodiment of the present invention. [Diagram 3] FIG. 2 is a schematic top view showing a fixing member of the motorized blind according to the first embodiment of the present invention. [Figure 4] FIG. 1 is a schematic perspective view showing a fixing member of an electric blind according to a first embodiment of the present invention, viewed from one side in the left-right direction. [Diagram 5] FIG. 2 is a schematic perspective view showing a fixing member of the motorized blind according to the first embodiment of the present invention, viewed from the other side in the left-right direction. [Figure 6] 5A and 5B are explanatory diagrams showing a process of attaching a fixing member to a head box, in which (a) shows the state before attachment and (b) shows the state after attachment. [Figure 7] FIG. 11 is a schematic perspective view showing a fixing member of an electric blind according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0015] As shown in Fig. 1, the motorized blind 1 of the first embodiment is a horizontal blind that is installed inside an opening such as a window frame of a building. The motorized blind 1 is installed inside a room that is separated from the outside of the building by window glass or the like. As shown in Figs. 1 to 6, the motorized blind 1 includes a fixed member 3 that is fixed inside a head box 2, an electronic component 4 that is provided on the fixed member 3, a winding drum 6 that raises and lowers a shielding material 5, and an obstacle detection mechanism 8 that can detect contact between an obstacle and a bottom rail 7. Here, the fixed member 3 is a drum receiver that rotatably supports the winding drum 6, and the electronic component 4 is a switch that stops the rotation of a motor 9 that rotates the winding drum 6. In this specification, when the electric blind 1 is installed, the longitudinal direction of the head box 2 is the left-right direction, and the direction perpendicular to the up-down and left-right directions is the front-rear direction. In addition, in the front-rear direction, the indoor side is the front, and the outdoor side is the rear.

[0016] As shown in FIG. 6, the head box 2 has a C-shaped channel shape and includes a bottom wall 10, a front wall 11, and a rear wall 12. The bottom wall 10 is a generally rectangular plate that is elongated in the left-right direction and is disposed with its plate surface facing up and down. The bottom wall 10 has a plurality of through holes (not shown) that penetrate in the up-down direction in a portion where a fixing member 3 (described later) is disposed. The through holes are generally rectangular in plan view. In the first embodiment, the bottom wall 10 has three through holes. The front wall 11 is a generally rectangular plate that is elongated in the left-right direction. The front wall 11 is provided at the front end of the bottom wall 10 with its plate surface facing forward and backward. The rear wall 12 is a generally rectangular plate that is elongated in the left-right direction. The rear wall 12 is provided at the rear end of the bottom wall 10 with its plate surface facing forward and backward. The bottom wall 10, the front wall 11, and the rear wall 12 are integrally formed, but may be formed by connecting each wall portion.

[0017] The head box 2 has a pair of front and rear locked portions 13, 13 to which the fixing member 3 is locked. In the first embodiment, the locked portion 13 located at the front of the pair of locked portions 13, 13 is a plate-like shape extending from a vertical midpoint of the inner surface of the front wall portion 11 to the inside of the head box 2, and is arranged with the plate surface facing up and down. The locked portion 13 on the front side is a substantially rectangular plate-like shape elongated in the left-right direction, and extends continuously from one end to the other end of the head box 2 in the left-right direction. The locked portion 13 located at the rear of the pair of locked portions 13, 13 is a plate-like shape extending from a vertical midpoint of the inner surface of the rear wall portion 12 to the inside of the head box 2, and is arranged with the plate surface facing up and down. The locked portion 13 on the rear side is a substantially rectangular plate-like shape elongated in the left-right direction, and extends continuously from one end to the other end of the head box 2 in the left-right direction. Therefore, the locked portions 13 are a pair of ribs protruding toward the inside of the head box 2 from one wall surface and the other wall surface in the short side direction of the support member.

[0018] The head box 2 thus configured is fixed to the upper surface of the window frame or to the ceiling via a number of brackets 14. This positions the electric blind 1 inside the window. A shielding material 5 is suspended from the head box 2 via a number of ladder cords 15.

[0019] A plurality of tilt drums 16 and a plurality of winding drums 6 are rotatably provided in the head box 2. Each tilt drum 16 and each winding drum 6 is provided in the head box 2 via a fixed member 3 that serves as a drum receiver. The tilt drum 16 and the winding drum 6 are rotatably supported by the fixed member 3. While being held by the fixed member 3, the tilt drum 16 and the winding drum 6 are arranged coaxially.

[0020] The fixing member 3 has a lower wall portion 18, a first wall portion 19, a second wall portion 20, a third wall portion 21, a fourth wall portion 22, and a fifth wall portion 23. The lower wall portion 18 is a substantially rectangular plate-like portion, and is disposed with the plate surface facing up and down. The lower wall portion 18 has a plurality of insertion holes 24 penetrating in the vertical direction. The insertion holes 24 are substantially rectangular in plan view. In the first embodiment, the lower wall portion 18 has three insertion holes 24. A substantially rectangular frame-shaped protrusion 25 is provided around the insertion hole 24. The protrusion 25 protrudes downward from the lower wall portion 18. The protrusion 25 has a fitting portion 26 located on the base end side and an introduction portion 27 located on the tip end side. The fitting portion 26 is substantially rectangular frame-shaped and provided on the lower wall portion 18. The introduction portion 27 is substantially rectangular frame-shaped and provided at the tip of the fitting portion 26. The outer circumferential surface of the introduction portion 27 is tapered. Specifically, the outer circumferential surface of the introduction portion 27 is inclined inwardly of the introduction portion 27 as it extends downward.

[0021] The first wall portion 19 stands up from the lower wall portion 18 along the longitudinal direction of the head box 2. Specifically, the first wall portion 19 is a substantially rectangular plate-like member, and is provided at the front end of the lower wall portion 18 with its plate surface facing forward and backward. The left-right length of the first wall portion 19 is smaller than the left-right length of the lower wall portion 18. The first wall portion 19 is located on the left side of the lower wall portion 18. The second wall portion 20 stands up from the lower wall portion 18 along the lateral direction of the head box 2. Specifically, the second wall portion 20 is a substantially rectangular plate-like member, and is provided at the left end of the lower wall portion 18 with its plate surface facing forward and backward. The third wall portion 21 stands up from the lower wall portion 18 along the longitudinal direction of the head box 2. Specifically, the third wall portion 21 is a substantially rectangular plate-like member, and is provided at the rear end of the lower wall portion 18 with its plate surface facing forward and backward. The length of the third wall portion 21 in the left-right direction is smaller than the length of the lower wall portion 18 in the left-right direction. The third wall portion 21 is located on the left side of the lower wall portion 18. The fourth wall portion 22 stands up from the lower wall portion 18 along the short side direction of the head box 2. Specifically, the fourth wall portion 22 is a substantially rectangular plate-like member, and is provided in the substantially central portion of the lower wall portion 18 with its plate surface facing left and right. The fourth wall portion 22 is disposed so as to face the second wall portion 20. The fifth wall portion 23 stands up from the lower wall portion 18 along the short side direction of the head box 2. Specifically, the fifth wall portion 23 is a substantially rectangular plate-like member, and is provided at the right end portion of the lower wall portion 18 with its plate surface facing left and right. The fifth wall portion 23 is disposed so as to face the fourth wall portion 22. Although the lower wall portion 18, the protruding portion 25, the first wall portion 19, the second wall portion 20, the third wall portion 21, the fourth wall portion 22 and the fifth wall portion 23 are integrally formed, they may also be formed by connecting each portion together.

[0022] The winding drum 6 rotatably supported by the fixed member 3 has a conventionally known configuration. Typically, the winding drum 6 has a winding drum body 28 and a winding drum piece 29. The winding drum body 28 has a cylindrical shaft portion 30, a plate-shaped flange portion 31 provided on one axial end side of the shaft portion 30, and a boss portion 32 provided on one axial end side of the shaft portion 30. The shaft portion 30 is cylindrical and extends in the left-right direction. The flange portion 31 is disc-shaped and provided on the right end of the shaft portion 30 so as to protrude radially outward. The boss portion 32 is columnar and provided on the right end of the shaft portion 30 so as to protrude rightward from the flange portion 31. The boss portion 32 has a through hole penetrating in the axial direction in the center. The through hole of the boss portion 32 communicates with an inner hole 33 of the shaft portion 30. The shaft portion 30, the flange portion 31, and the boss portion 32 are integrally formed, but may be formed by connecting them together. The take-up drum piece 29 has a cylindrical shaft portion 34 and a flange portion 35 provided on one end side of the shaft portion 34 in the axial direction. The shaft portion 34 is in the shape of a short cylinder extending in the left-right direction. The flange portion 35 is in the shape of a disk, and is provided on the left end portion of the shaft portion 34 so as to protrude radially outward. The shaft portion 34 and the flange portion 35 are integrally formed, but may be formed by connecting them together.

[0023] The winding drum piece 29 is detachably attached to the winding drum body 28. Specifically, the left surface of the flange 35 of the winding drum piece 29 is attached to the right surface of the boss 32 of the winding drum body 28, whereby the winding drum piece 29 is provided on the winding drum body 28. As a result, the boss 32 of the winding drum body 28 is disposed between the flange 31 of the winding drum body 28 and the flange 35 of the winding drum piece 29. The winding drum 6 configured in this manner is rotatably supported by the fixed member 3, with the left end of the shaft 30 of the winding drum body 28 being rotatably provided on the second wall 20 and the right end of the shaft 34 of the winding drum piece 29 being rotatably provided on the fourth wall 22.

[0024] The tilt drum 16 rotatably supported by the fixed member 3 has a conventionally known configuration. Typically, the tilt drum 16 has a drum body 36, a rotating body 37, and a clutch spring 38. The drum body 36 is a circular box-like shape that opens to the right. The rotating body 37 is a cylindrical shape that extends in the left-right direction. The clutch spring 38 is wound around the outer circumferential surface of the rotating body 37. The tilt drum 16 having such a configuration is rotatably supported by the fixed member 3 in a state in which the rotating body 37 provided with the clutch spring 38 is housed in the drum body 36. In a state in which the tilt drum 16 is supported by the fixed member 3, the shaft portion 30 of the winding drum body 28 penetrates the drum body 36 and the rotating body 37, and the rotating body 37 of the tilt drum 16 can rotate integrally with the winding drum 6. When the rotating body 37 rotates in this manner, the drum body 36 can be rotated by the clutch spring 38. Therefore, the tilt drum 16 can rotate integrally with the winding drum 6.

[0025] One end of the ladder cord 15 is anchored to the tilt drum 16 in the front-rear direction. When the tilt drum 16 has the above-mentioned configuration, one end of the ladder cord 15 is anchored to the drum body 36. A plurality of shielding materials (slats) 5 are supported on the ladder cord 15. Specifically, the shielding materials 5 are supported on each middle cord of the ladder cord 15 such that the longitudinal direction of the shielding materials 5 is aligned with the left-right direction. In a state in which the plurality of shielding materials 5 are supported on the ladder cord 15, the plurality of shielding materials 5 are arranged at intervals in the up-down direction. In this manner, the plurality of shielding materials 5 are suspended from the head box 2.

[0026] A lifting tape 39, which is a lifting member for lifting and lowering the shielding material 5, is connected to the winding drum 6 so as to be capable of being wound and unwound. When the winding drum 6 has the above-mentioned configuration, the lifting tape 39 can be wound around the outer circumferential surface of the boss portion 32. One end of the lifting tape 39 is anchored to the winding drum 6. The lifting tape 39 is a member separate from the ladder cord 15, and supports the bottom rail 7 in a suspending manner so as to be liftable and lowerable on the head box 2. The bottom rail 7 is provided at the other end of the lifting tape 39. The other end of the ladder cord 15 is anchored to the bottom rail 7 from the front-rear direction. In this way, the bottom rail 7 is suspended from the head box 2. The bottom rail 7 suspended from the head box 2 is located below the shielding material 5 arranged at the lowest position.

[0027] As shown in FIG. 1, a rotating shaft 40 is rotatably provided in the head box 2. When the rotating shaft 40 is provided in the head box 2, the axial direction of the rotating shaft 40 is along the longitudinal direction of the head box 2. When the rotating shaft 40 is provided in the head box 2, it can rotate around its own axis. When the rotating shaft 40 is provided in the head box 2, it passes through the tilt drum 16 and the winding drum 6. When the rotating shaft 40 passes through the tilt drum 16 and the winding drum 6, the tilt drum 16 and the winding drum 6 can rotate together with the rotating shaft 40. When the tilt drum 16 and the winding drum 6 are configured as described above, the rotating shaft 40 passes through the inner hole 33 of the shaft portion 30 of the winding drum main body 28, the through hole of the boss portion 32 of the winding drum main body 28, and the inner hole of the shaft portion 34 of the winding drum piece 29. At this time, the winding drum 6 is connected to the rotating shaft 40 so as to rotate together with the rotating shaft 40. As described above, the tilt drum 16 can rotate integrally with the winding drum 6. Therefore, the tilt drum 16 can rotate integrally with the rotating shaft 40.

[0028] In the illustrated example, a plurality of fixed members 3, on which tilt drums 16 and take-up drums 6 are provided, are provided inside the head box 2. Therefore, the rotating shaft 40 penetrates the tilt drums 16 and take-up drums 6 provided on each fixed member 3, and the tilt drums 16 and take-up drums 6 through which the rotating shaft 40 penetrates can rotate integrally with the rotating shaft 40. This allows the rotating shaft 40 to simultaneously transmit its rotation to the tilt drums 16 and take-up drums 6 provided on each fixed member 3.

[0029] With the rotating shaft 40 provided in the head box 2, the rotating shaft 40 is connected to the motor 9 provided in the head box 2. The rotating shaft 40 is connected to the motor 9 via a speed reducing mechanism (not shown). With this configuration, when the motor 9 is driven, the rotation of the motor 9 is reduced in speed by the speed reducing mechanism and transmitted to the rotating shaft 40. When the rotation of the motor 9 is transmitted to the rotating shaft 40, the rotation of the rotating shaft 40 is transmitted to the winding drum 6 and the tilt drum 16 which can rotate integrally with the rotating shaft 40. Therefore, the winding drum 6 and the tilt drum 16 can be rotated by driving the motor 9.

[0030] The motor 9 that rotates the rotating shaft 40 is controlled by a control unit 41 provided in the head box 2. Power is supplied to the motor 9 and the control unit 41 from a switching power supply 42 provided in the head box 2. A power cord (not shown) is connected to the switching power supply 42. When AC power is input to the switching power supply 42 from the power cord, the switching power supply 42 converts the AC power into DC power and supplies the DC power to the motor 9 and the control unit 41.

[0031] When the rotating shaft 40 is rotated in one direction, the rotating body 37 of the tilt drum 16 rotates integrally with the winding drum 6. When the rotating body 37 rotates, one end of the clutch spring 38 presses a pressing portion (not shown) provided in the drum body 36, thereby rotating the drum body 36. When the drum body 36 rotates, the multiple shielding materials 5 supported by the ladder cord 15 simultaneously tilt from a state in which they are arranged substantially horizontally. This allows the multiple shielding materials 5 to be in an inclined state. When the rotating shaft 40 is further rotated in one direction, the multiple shielding materials 5 enter a closed state along the vertical direction, and the other end of the clutch spring 38 is pressed, so that the winding of the clutch spring 38 around the rotating body 37 is loosened. When the winding of the clutch spring 38 around the rotating body 37 is loosened, the rotating body 37 rotates relative to the clutch spring 38. As a result, the pressing portion of the drum body 36 is not pressed by one end of the clutch spring 38, so that the drum body 36 rotates relative to the rotating body 37. In other words, the tilt drum 16 stops rotating, and the take-up drum 6 and the rotating shaft 40 rotate relative to the tilt drum 16.

[0032] When the rotating shaft 40 is rotated in the other direction, the rotating body 37 of the tilt drum 16 rotates integrally with the winding drum 6. When the rotating body 37 rotates, the other end of the clutch spring 38 presses a pressing portion (not shown) provided in the drum body 36, thereby rotating the drum body 36. When the drum body 36 rotates, the multiple shielding materials 5 supported by the ladder cord 15 simultaneously tilt from a substantially horizontally arranged state to the opposite side from the previous state. This allows the multiple shielding materials 5 to be in an inclined state. When the rotating shaft 40 is further rotated in the other direction, the multiple shielding materials 5 enter a closed state along the vertical direction, and one end of the clutch spring 38 is pressed, so that the winding of the clutch spring 38 around the rotating body 37 is loosened. When the winding of the clutch spring 38 around the rotating body 37 is loosened, the rotating body 37 rotates relative to the clutch spring 38. As a result, the pressing portion of the drum body 36 is not pressed by the other end of the clutch spring 38, so that the drum body 36 rotates relative to the rotating body 37. That is, the tilt drum 16 stops rotating, and the take-up drum 6 and the rotating shaft 40 rotate relative to the tilt drum 16. By rotating the tilt drum 16 in one direction or the other in this manner, the tilt angles of the multiple shielding materials 5 can be adjusted simultaneously.

[0033] When the rotating shaft 40 is rotated, the winding drum 6, which is provided on the rotating shaft 40 so as to be rotatable integrally therewith, rotates. When the winding drum 6 is rotated in a direction in which the lifting tape 39 is wound up, the bottom rail 7 is lifted by the lifting tape 39. When the bottom rail 7 is lifted, the shielding materials 5 are sequentially superimposed on the bottom rail 7. As a result, the multiple shielding materials 5 are lifted, and the electric blind 1 can be opened. When the electric blind 1 is in an open state, when the winding drum 6 is rotated in a direction in which the lifting tape 39 is unwound, the bottom rail 7 is lowered by the lifting tape 39. As the bottom rail 7 is lowered, the number of shielding materials 5 superimposed on the bottom rail 7 decreases. As a result, the multiple shielding materials 5 are lowered, and the electric blind 1 can be closed.

[0034] As described above, the tilt drum 16 and the winding drum 6 are provided on the head box 2 via the fixed member 3. In this case, the fixed member 3 is detachably attached to the head box 2. The fixed member 3 has a plurality of locking portions 43 that can be locked to the locked portions 13 of the head box 2. Each locking portion 43 is provided with a release operation portion 44 that can release the locked state in which the locking portion 43 is locked to the locked portion 13. In the first embodiment, at least one locking portion 43 is formed on one side and the other side in the front-rear direction (short direction of the head box 2) of the fixed member 3 so as to be able to be locked to a pair of front and rear locked portions 13, 13, respectively. In the illustrated example, one locking portion 43 is formed on the first wall portion 19 located on the front side of the fixed member 3, and one locking portion 43 is formed on the third wall portion 21 located on the rear side of the fixed member 3.

[0035] The locking portion 43 provided on the first wall portion 19 of the fixing member 3 is formed by cutting and raising the upper end of the first wall portion 19 toward the front in a substantially rectangular shape. The locking portion 43 of the first wall portion 19 has an inclined portion 45 that inclines upward from the base end toward the front, and an extending portion 46 that extends upward from the tip end of the inclined portion 45. With this configuration, the locking portion 43 of the first wall portion 19 can be tilted in the front-rear direction. The release operation portion 44 provided on the locking portion 43 of the first wall portion 19 is a recessed groove that opens forward. The release operation portion 44 has a groove shape that opens forward, and is formed along the up-down direction on the front surface of the extending portion 46 of the locking portion 43 of the first wall portion 19. The release operation portion 44 has a first groove portion 47 located on the upper side and a second groove portion 48 located on the lower side. The first groove portion 47 has a groove shape that opens forward and opens in the up-down direction. The second groove 48 is a groove-shaped groove that opens forward and opens in the vertical direction. The second groove 48 is continuous with the first groove 47 and communicates with the first groove 47. Since the thickness of the left and right side walls of the second groove 48 is greater than the thickness of the left and right side walls of the first groove 47, the distance between the inner surfaces of the left and right side walls of the second groove 48 is smaller than the distance between the inner surfaces of the left and right side walls of the first groove 47. In addition, the left and right side walls of the second groove 48 protrude forward more than the left and right side walls of the first groove 47. Therefore, at both left and right ends of the locking portion 43 of the first wall 19, step portions 49 whose upper surfaces face the vertical direction are formed. Note that the locking portion 43 formed by cutting and raising the upper end of the third wall 21 toward the rear in a substantially rectangular shape and the locking portion 43 of the first wall 19 are configured symmetrically in the front-rear direction, so a description thereof will be omitted here.

[0036] Next, a process of attaching the fixing member 3 to the head box 2 will be described. When attaching the fixing member 3 to the head box 2, first, the fixing member 3 is accommodated in the head box 2 so that the lower wall portion 18 of the fixing member 3 is positioned downward. After the fixing member 3 is accommodated in the head box 2, one side in the front-rear direction of the fixing member 3 is pushed downward. As a result, the locking portion 43 arranged on one side in the front-rear direction of the fixing member 3 comes into contact with the locked portion 13 arranged on one side in the front-rear direction of the head box 2 and is pushed backward, and then the contact with the locked portion 13 is released and the original position is restored. In this way, the locking portion 43 arranged on one side in the front-rear direction of the fixing member 3 rides over the locked portion 13 arranged on one side in the front-rear direction of the head box 2. After the locking portion 43 rides over the locked portion 13, the locked portion 13 arranged on one side in the front-rear direction of the head box 2 abuts on the upper surface of the step portion 49 of the locking portion 43 arranged on one side in the front-rear direction of the fixing member 3. Thereafter, the other side of the fixed member 3 in the front-rear direction is pushed downward. As a result, the locking portion 43 arranged on the other side of the fixed member 3 in the front-rear direction comes into contact with the locked portion 13 arranged on the other side of the head box 2 in the front-rear direction and is pushed forward, and then the contact with the locked portion 13 is released and the locking portion 43 returns to its original position. In this manner, the locking portion 43 arranged on the other side of the fixed member 3 in the front-rear direction climbs over the locked portion 13 arranged on the other side of the head box 2 in the front-rear direction. After the locking portion 43 climbs over the locked portion 13, the locked portion 13 arranged on the other side of the head box 2 in the front-rear direction abuts against the upper surface of the step portion 49 of the locking portion 43 arranged on the other side of the fixed member 3 in the front-rear direction.

[0037] As described above, the locking portion 43 is in a locked state in which it is locked to the locked portion 13 on one side of the head box 2 in the front-rear direction, and the locking portion 43 on the other side of the head box 2 in the front-rear direction is in a locked state in which it is locked to the locked portion 13. The locking portion 43 is in a locked state in which it is locked to the locked portion 13, and the fixed member 3 is attached to the head box 2. As described above, the locking portion 43 has the first groove portion 47, the second groove portion 48, and the step portion 49. Therefore, the release operation portion 44, which is a recessed groove, can form a gap in a part between the locked portion 13 and the locking portion 43 in the locked state. That is, in the locked state, the release operation portion 44 penetrates in the vertical direction. When the fixing member 3 is attached to the head box 2, the locked portion 13 is located above the step portion 49 of the locking portion 43 of the fixing member 3, so that the fixing member 3 is restricted from moving upward relative to the head box 2.

[0038] As described above, when the fixing member 3 is attached to the head box 2, the multiple protrusions 25 of the fixing member 3 are inserted into the multiple through holes provided in the bottom wall 10 of the head box 2. When one side of the fixing member 3 in the front-rear direction is pushed downward, the outer surface of the introduction portion 27 located on the other side of the protrusion 25 in the front-rear direction contacts the edge of the through hole. After that, when the other side of the fixing member 3 in the front-rear direction is pushed downward, the protrusion 25 is pushed downward while the outer surface of the introduction portion 27 located on the other side in the front-rear direction contacts the edge of the through hole. As a result, the protrusion 25 is inserted into the through hole, and the fitting portion 26 fits into the edge of the through hole, thereby restricting the movement of the protrusion 25 in the front-rear and left-right directions. In the case of the first embodiment, since the outer peripheral surface of the introduction portion 27 of the protrusion 25 is formed in a tapered shape, when the fixing member 3 is attached to the head box 2, the protrusion 25 of the fixing member 3 can be smoothly inserted into the through hole of the head box 2.

[0039] When the protrusion 25 is inserted into the through hole, the ladder cord 15 is passed through two of the three insertion holes 24, 24 and two of the three through holes, and the lifting tape 39 is passed through the remaining insertion hole 24 and the remaining through hole.

[0040] Next, a process of removing the fixing member 3 from the head box 2 will be described. A dedicated release tool is used to remove the fixing member 3 from the head box 2. The release tool is inserted into the gap between the locking portion 43 and the locked portion 13. At this time, the release tool is simultaneously inserted into the gap between the front locking portion 43 and the front locked portion 13 and the gap between the rear locking portion 43 and the rear locked portion 13. When the release tool is inserted into the gap in this manner, the release tool presses the release operation portion 44 inward. As a result, the locking portion 43 is tiltable as described above, so that it is tilted inward. That is, the front locking portion 43 tilts backward, and the rear locking portion 43 tilts forward. When the locking portion 43 tilts inward, the step portion 49 moves from a state in which it is located below the locked portion 13, and is positioned at a position away from the locked portion 13. When the step portion 49 is disposed in a position disengaged from the locked portion 13, the locking portion 43 is released from the locked state of the locked portion 13. By releasing the locking state of the locking portion 43 and the locked portion 13, the fixing member 3 can be moved upward with respect to the head box 2, and therefore can be removed from the head box 2.

[0041] In this way, by pressing the release operation portion 44, the locking portion 43 can be tilted in a direction to release the locked state between the locking portion 43 and the locked portion 13. The release tool can press the release operation portions 44 of the multiple locking portions 43 simultaneously. The release operation portions 44 can be pressed with the release tool such that, by inserting the release tool into the groove, the locking portion 43 tilts in a direction to release the locked state. Therefore, the release tool can release the locked state of the multiple locking portions 43 simultaneously, making it possible to remove the fixing member 3 from the head box 2.

[0042] As shown in FIG. 2 and FIG. 3, the fixed member 3 is provided with an obstacle detection mechanism 8 and an electronic component 4. The obstacle detection mechanism 8 can detect contact between an obstacle and the bottom rail 7 based on the slack of the lifting tape 39 when the shielding material 5 is lowered. The obstacle detection mechanism 8 has a rotating part 50, a detection lever part 51, a roller support part 52, and a guide roller 53. The rotating part 50 is cylindrical. The rotating part 50 is held by a columnar shaft part 54 provided on the lower wall part 18 of the fixed member 3 so as to be rotatable around its own axis. At this time, the rotating part 50 is rotatably held by the shaft part 54 with the shaft part 54 of the fixed member 3 inserted into the inner hole of the rotating part 50. The detection lever part 51 is rod-shaped and provided on the rotating part 50. The detection lever part 51 protrudes outward from the outer circumferential surface of the rotating part 50. At this time, the detection lever portion 51 is disposed between the fourth wall portion 22 and the fifth wall portion 23. The roller support portion 52 has a roller support piece 55 and a connecting piece 56. The roller support piece 55 has a pair of rod-shaped first pieces 57, 57 facing each other, and a rod-shaped connecting piece 58 connecting one end of the pair of first pieces 57, 57 in the axial direction. The connecting piece 56 is rod-shaped and provided on the rotating portion 50. The connecting piece 56 protrudes outward from the outer circumferential surface of the rotating portion 50. The roller support piece 55 is connected to the rotating portion 50 via the connecting piece 56. At this time, the other end of one of the pair of first pieces 57, 57 in the axial direction is fixed to the tip of the connecting piece 56. The rotating portion 50, the detection lever portion 51, and the roller support portion 52 are integrally formed, but may be formed by connecting each of them. The guide roller 53 is provided so as to bridge the pair of first pieces 57, 57. The guide roller 53 is rotatable about its own axis. When the guide roller 53 is provided between the pair of first pieces 57, 57, the guide roller 53 is disposed above the insertion hole 24 through which the lifting tape 39 is passed.

[0043] The electronic component 4 is a switch that stops the rotation of the motor 9 that rotates the winding drum 6 when an obstacle comes into contact with the bottom rail 7 and the obstacle detection mechanism 8 is activated. Typically, the electronic component 4 is a microswitch. As shown in FIG. 2 , the electronic component 4 is placed on the lower wall portion 18 between the fourth wall portion 22 and the fifth wall portion 23. The electronic component 4 placed on the fixed member 3 and the detection lever portion 51 of the obstacle detection mechanism 8 are covered by a cover 59 provided on the fixed member 3.

[0044] As described above, the guide roller 53 of the obstacle detection mechanism 8 is disposed at a position corresponding to the insertion hole 24 through which the lifting tape 39 passes. Therefore, in a normal state in which the bottom rail 7 is not in contact with an obstacle, tension is applied to the lifting tape 39, and the guide roller 53 is pressed backward by the lifting tape 39. When the guide roller 53 is pressed backward, the obstacle detection mechanism 8 is rotated clockwise in FIG. 3. As a result, the detection lever portion 51 of the obstacle detection mechanism 8 is in a state in which it presses the lever portion 60 of the microswitch, which is the electronic component 4. When the lever portion 60 of the electronic component 4 is pressed, the switch portion 61 of the electronic component 4 is pressed, and the switch of the electronic component 4 is in an on state.

[0045] If the bottom rail 7 comes into contact with an obstacle when the shielding material 5 is lowered, slack is generated in the lifting tape 39. When slack is generated in the lifting tape 39, the lifting tape 39 is not pushing the guide roller 53 rearward. In this state, the detection lever portion 51 of the obstacle detection mechanism 8 is pushed rearward by the lever portion 60 of the electronic component 4. When the detection lever portion 51 is pushed rearward, the obstacle detection mechanism 8 is rotated counterclockwise in FIG. 2. In this state, the switch portion 61 of the electronic component 4 is not pushed by the lever portion 60 of the electronic component 4, so the switch of the electronic component 4 is turned off. When the switch of the electronic component 4 is turned off, the motor 9 is stopped.

[0046] 4 and 5 , the electronic component 4 is attached to the fixing member 3 so that one or more wires 62 are drawn out from the fixing member 3. The fixing member 3 has at least one wire holding portion capable of holding the wires 62 of the electronic component 4 on the side surface of the fixing member 3 when the electronic component 4 is attached. In the first embodiment, the wire holding portion has a first wire holding portion 63 provided on the first wall portion 19 and the third wall portion 21, and a second wire holding portion 64 provided on the second wall portion 20.

[0047] At least one first wiring holding portion 63 is formed on the first wall portion 19 and the third wall portion 21. In the first embodiment, one first wiring holding portion 63 is formed on the first wall portion 19 and the third wall portion 21. The first wiring holding portion 63 of the first wall portion 19 has a first protruding piece 65 protruding forward from the first wall portion 19 and a second protruding piece 66 protruding upward from the tip of the first protruding piece 65. The first wiring holding portion 63 of the third wall portion 21 has a first protruding piece 65 protruding rearward from the third wall portion 21 and a second protruding piece 66 protruding upward from the tip of the first protruding piece 65. With this configuration, the wiring 62 drawn out from the fixing member 3 is held between the second protruding piece 66 and the first wall portion 19. Therefore, the first wiring holding portion 63 can hold the wiring 62 so that it can be routed along the left-right direction of the first wall portion 19 (the longitudinal direction of the head box 2) in the gap between the first wall portion 19 of the fixing member 3 and the front wall portion 11 of the head box 2. As shown in Fig. 6, by being held by the first wiring holding portion 63, the wiring 62 is in a state of being routed in the gap between the first wall portion 19 of the fixing member 3 and the front wall portion 11 of the head box 2, so that it is possible to prevent the wiring 62 from being pinched between the head box 2 and the fixing member 3 when the fixing member 3 is attached inside the head box 2.

[0048] At least one second wiring holding portion 64 is formed on the second wall portion 20. In the first embodiment, two second wiring holding portions 64 are formed on the second wall portion 20. The front second wiring holding portion 64 has a first protruding piece 67 protruding leftward from the second wall portion 20 and a second protruding piece 68 protruding rearward from the tip of the first protruding piece 67. The rear second wiring holding portion 64 has a first protruding piece 67 protruding leftward from the second wall portion 20 and a second protruding piece 68 protruding forward from the tip of the first protruding piece 67. With this configuration, the wiring 62 drawn out from the fixing member 3 is held between the second protruding piece 68 and the second wall portion 20 in a state where it is held by the first wiring holding portion 63. At this time, the wiring 62 drawn out from the fixing member 3 is held between the second protruding piece 68 and the second wall portion 20 in a state along the vertical direction, so that it is bent at the middle portion so as to be along the vertical direction. Therefore, the second wiring holding portion 64 can bend the wiring 62 routed from the first wall portion 19 along the second wall portion 20 in the vertical direction of the second wall portion 20, and hold the wiring 62 so that it can be routed around the second wall portion 20.

[0049] In this manner, the wiring 62 drawn out from the electronic component 4 is held by the first wiring holding portion 63 and the second wiring holding portion 64, so that the wiring 62 can be routed outside the fixed member 3. In the illustrated example, three fixed members 3, each having the drums 6, 16, are attached inside the head box 2, and the fixed member 3 located in the center is not provided with the fault detection mechanism 8 and the electronic component 4.

[0050] Next, a second embodiment of the present invention will be described with reference to Fig. 7. Note that components having the same reference numerals as those in the above embodiment have the same functions, and therefore, the description thereof may be omitted below.

[0051] In the second embodiment, the wiring holder has a third wiring holder 69 provided on the first wall 19 in addition to the first wiring holder 63 and the second wiring holder 64. At least one third wiring holder 69 is formed on the first wall 19. In the second embodiment, one third wiring holder 69 is formed on the first wall 19. The third wiring holder 69 has a first protruding piece 70 protruding forward from the first wall 19 at a location located above the first wiring holder 63, and a second protruding piece 71 protruding upward from the tip of the first protruding piece 70. With this configuration, a wiring 72 is held between the second protruding piece 71 and the first wall 19 along the left-right direction. This wiring 72 is not the wiring 62 from the electronic component 4, but the wiring 72 from a component other than the electronic component 4 among the components of the electric blind 1. Therefore, the third wiring holding portion 69 can hold other wiring 72 different from the wiring 62 of the electronic component 4 in the gap between the first wall portion 19 of the fixing member 3 and the front wall portion 11 of the head box 2, at a position spaced apart in the vertical direction, so that it can be routed along the left-right direction of the first wall portion 19 (the longitudinal direction of the head box 2).

[0052] In the case of the motorized blind 1 of the above embodiment, the wiring 62 of the electronic component 4 can be held by the fixing member 3 so as to be routed along the side surface of the fixing member 3, so that the wiring can be prevented from becoming entangled. In particular, when the electronic component 4 is attached to the fixing member 3 and packaged for transportation, the wiring can become entangled, but the motorized blind 1 of the above embodiment can solve this problem with a simple configuration. Furthermore, the motorized blind 1 of the above embodiment can prevent the wiring from coming loose from a connector or the like and being broken when the wiring is unintentionally pulled. Therefore, the motorized blind 1 of the above embodiment can conveniently handle the wiring 62 of the electronic component 4 attached inside the head box 2 via the fixing member 3.

[0053] In the case of the motorized blind 1 of the above embodiment, the first wiring holding portion 63 is formed on the first wall portion 19 and the third wall portion 21. Therefore, according to the motorized blind 1 of the above embodiment, when the electronic component 4 is attached inside the head box 2 via the fixing member 3, it is possible to prevent the wiring 62 from being pinched between the head box 2 and the fixing member 3.

[0054] In the case of the motorized blind 1 of the above embodiment, the second wire holding portion 64 is formed on the second wall portion 20. Therefore, according to the motorized blind 1 of the above embodiment, the wires 62 of the electronic component 4 can be flexibly routed along the side surface of the fixing member 3.

[0055] In the case of the motorized blind 1 of the above embodiment, the third wire holding portion 69 is formed on the first wall portion 19. Therefore, according to the motorized blind 1 of the above embodiment, in addition to the wires 62 of the electronic components 4 fixed to the fixing member 3, other wires 72, such as power supply wires, can also be held on the side surface of the fixing member 3.

[0056] In the case of the electric blind 1 of the above embodiment, the above-mentioned effects can be obtained in a specification in which the fault detection mechanism 8 including the electronic component 4 as a switch is configured on the fixed member 3 serving as the drum receiver.

[0057] The present invention is not limited to the above-described embodiments, and modifications and improvements within the scope of the present invention that can achieve the object of the present invention are included in the present invention.

[0058] For example, in the above embodiment, the fixed member 3 is a drum receiver that rotatably holds the drums 6 and 16, but is not limited to this. The electronic component 4 is a switch that stops the rotation of the motor 9, but is not limited to this and may be any component having wiring.

[0059] The number of first wiring holding portions 63, second wiring holding portions 64, and third wiring holding portions 69 can each be changed appropriately.

[0060] In the above embodiment, the first wiring holding portion 63 or the second wiring holding portion 64 may be provided without the third wiring holding portion 69, the first wiring holding portion 63 and the third wiring holding portion 69 may be provided without the second wiring holding portion 64, or the second wiring holding portion 64 and the third wiring holding portion 69 may be provided without the first wiring holding portion 63. [Explanation of symbols]

[0061] 1. Electric blinds 2 Head Box 3 Fixing material 4. Electronic Components 5 Shielding material 6 Winding drum 7 Bottom Rail 8. Fault Detection Mechanism 9 Motor 39 Lifting Tape 62 Wiring 63 1st wiring holding part 64 2nd wiring holding part 69 3rd wiring holding part 72 Wiring

Claims

1. An electric blind comprising a fixing member fixed in a head box and an electronic component attached to the fixing member such that wiring is drawn out from the fixing member, An electric blind, wherein the fixing member has at least one wiring holding portion capable of holding the wiring of the electronic component on a side surface of the fixing member when the electronic component is attached.

2. The fixing member has a first wall portion standing along a longitudinal direction of the head box, The electric blind as described in claim 1, wherein the wiring holding portion has at least one first wiring holding portion formed on the first wall portion and holds the wiring in a manner that allows it to be routed along the longitudinal direction of the first wall portion within the gap between the fixing member and the head box.

3. The fixing member has a second wall portion standing along a short side direction of the head box, The electric blind as described in claim 2, wherein the wiring holding portion has at least one second wiring holding portion formed on the second wall portion and holds the wiring routed from the first wall portion along the second wall portion in the vertical direction of the second wall portion so that the wiring can be routed to the second wall portion.

4. The electric blind as described in claim 2 or 3, wherein the wiring holding portion includes at least one third wiring holding portion formed in the first wall portion and holds wiring other than the wiring of the electronic component within the gap so that it can be routed along the longitudinal direction of the first wall portion.

5. The shielding material may be raised and lowered by a winding drum connected to the winding and unwinding member, and the shielding material may be lowered by a slackening member. The shielding material may be lowered by a slackening member. the fixed member is a drum receiver that rotatably supports the winding drum, The motorized blind according to claim 1 , wherein the electronic component is a switch that stops rotation of a motor that rotates the winding drum when the fault detection mechanism is activated.

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