Motor fixing structure and motor fixing method

Abstract

To provide a motor fixing structure and a motor fixing method that can improve assemblability when fixing a motor to a support member while being capable of preventing generation of noise of the motor.SOLUTION: A motor fixing structure of an electric shielding device that operates a shielding material by rotationally driving a drive shaft by a motor 26, includes: a hollow support member 4 that suspends and supports the shielding material; an end unit 3 that is fixed to a longitudinal end portion of the support member 4; a motor mount 79 that is fitted into an inside of the support member 4 in a state of accommodating at least a part of the motor 26 and has a vibration-absorbing property; and connecting means 80 that connects the end unit 3 and the motor mount 79.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a motor fixing structure and a motor fixing method for an electric shading device that can operate a shading material by a motor. [Background technology]

[0002] A conventional motor fixing structure is disclosed in Patent Document 1. This motor fixing structure surrounds at least a portion of the outer shape of a motor device for opening and closing a shielding material supported by a support member with a motor mount having vibration absorption properties, and fixes the motor mount to the support member so that it cannot move.

[0003] The motor mount is fixed to the support member so that it cannot rotate because a portion of its outer wall surface is in close contact with at least a portion of the inner wall surface of the support member. Furthermore, the motor mount is fixed to the support member so that it cannot move in the thrust direction because an engaging portion formed on a portion of the motor mount engages with an engaged portion formed on the support member. This configuration allows the motor device to be fixed to the support member without using screws, preventing noise caused by loose screws. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-76277 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above motor fixing structure, due to the structure for restricting the movement of the motor mount in the thrust direction, it was necessary to align the engaging portion of the motor mount with the engaged portion of the support member during assembly. Furthermore, when the motor device and motor mount were inserted together through the top opening of the support member, the upper flange of the head box interfered with the motor mount, so the motor mount had to be pushed in to assemble it while elastically deforming both. Therefore, a motor fixing structure was desired that could prevent motor noise while improving assembly when fixing the motor to the support member.

[0006] The present invention has been made in consideration of these problems, and aims to provide a motor fixing structure and a motor fixing method that can prevent the generation of motor noise while improving assembly when fixing the motor to a support member. [Means for solving the problem]

[0007] The inventors believed that the above-mentioned problems could be solved by connecting an end unit provided at the longitudinal end of the support member with a motor mount that houses the motor, and based on this, they invented the following new motor fixing structure and motor fixing method.

[0008] (1) The motor fixing structure according to the present invention is a motor fixing structure for an electric shielding device that operates a shielding material by rotating a drive shaft with a motor, and comprises a hollow support member that supports the shielding material in a suspended manner, an end unit fixed to the longitudinal end of the support member, a motor mount having vibration-absorbing properties that is fitted inside the support member while accommodating at least a portion of the motor, and a connecting means that connects the end unit and the motor mount.

[0009] (2) In (1) above, the support member preferably has a storage section that opens along the longitudinal direction to accommodate electrical equipment including the motor, and a rail section that opens along the longitudinal direction to accommodate a drive system including the drive shaft, and the end unit is preferably a gear unit for transmitting rotation of the motor to the drive shaft, fixed to the longitudinal end of the support member across the storage section and the rail section so as to be interposed between the motor and the drive shaft.

[0010] (3) In (2) above, it is preferable that the gear unit comprises at least one gear and a case that rotatably supports and houses the gear and is fixed to the longitudinal end of the support member, and that the connecting means detachably connects the case and the motor mount.

[0011] (4) In the above (3), it is preferable that the connecting means is configured by fitting a fitting portion formed on either the case or the motor mount with a fitted portion formed on the other of the case or the motor mount.

[0012] (5) The method for fixing a motor according to the present invention is a method for fixing a motor of an electric shielding device that operates a shielding material by rotating a drive shaft with a motor, in which a motor mount having vibration absorption properties and accommodating at least a part of the motor is connected by a connecting means to an end unit fixed to the longitudinal end of a hollow support member that supports the shielding material in a suspended state, and the motor mount is inserted from the longitudinal end of the support member to fit inside the support member, and the end unit is fixed to the longitudinal end of the support member. [Effects of the Invention]

[0013] The present invention provides a structure for connecting an end unit provided at the longitudinal end of a support member to a motor mount that houses a motor, thereby providing a motor fixing structure and a motor fixing method that can improve assembly when fixing a motor to a support member while preventing motor noise. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a front view showing the overall configuration of an electric shading device to which a motor fixing structure according to an embodiment of the present invention is applied. [Figure 2] FIG. 4 is a rear view showing a state in which the support member of the motor fixing structure according to the embodiment of the present invention is used. [Figure 3] 1 is a rear view showing a state in which the support member of the motor fixing structure according to one embodiment of the present invention is used, with the rear cover omitted. FIG. [Figure 4] 1A and 1B are perspective views showing the use state of a support member of a motor fixing structure according to one embodiment of the present invention, in which FIG. 1A shows the state in which the rear cover is open, and FIG. 1B shows the state in which the rear cover is closed. [Figure 5] 1A and 1B are diagrams showing the use state of a support member of a motor fixing structure according to one embodiment of the present invention, in which (a) is a schematic longitudinal cross-sectional view showing the state in which the rear cover is open, and (b) is a partially enlarged view of the rear cover in the open state. [Figure 6] 1A and 1B are diagrams showing the use state of a support member of a motor fixing structure according to one embodiment of the present invention, in which (a) is a schematic longitudinal cross-sectional view showing the state in which the rear cover is closed, and (b) is a partially enlarged view of the rear cover in the closed state. [Figure 7] 1 is a perspective view showing a state in which the motor fixing structure according to one embodiment of the present invention is used, in which the rear cover is omitted from the support member. FIG. [Figure 8] 1 is a perspective view showing a state in which a motor fixing structure according to an embodiment of the present invention is used, with an end cover removed from a support member. FIG. [Figure 9] FIG. [Figure 10] 1 is a perspective view showing a motor fixing structure according to an embodiment of the present invention, showing the opening / closing gear unit side. FIG. [Figure 11] 1 is an exploded perspective view showing a motor fixing structure according to an embodiment of the present invention, showing the opening / closing gear unit side. FIG. [Figure 12] 1A and 1B are diagrams showing the structure of an opening / closing gear unit, in which (a) is a longitudinal cross-sectional view, and (b) is a longitudinal cross-sectional view taken along a different cutting plane from that of (a). [Figure 13] 1 is an exploded perspective view showing a motor fixing structure according to an embodiment of the present invention, showing the rotation gear unit side. FIG. [Figure 14] 1 is an exploded perspective view showing a state in which a motor used in a motor fixing structure according to an embodiment of the present invention is mounted to a motor mount. [Figure 15] FIG. 10 is a perspective view showing a plate material used when mounting a motor to a motor mount. [Figure 16] FIG. 2 is a perspective view showing a state in which the motor is attached to a support member. [Figure 17] FIG. 4 is a side view showing a state in which the motor is attached to the support member. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0016] The power shading device 1 of this embodiment is typically a vertical blind. The power shading device 1 is installed, for example, in an opening such as a window frame of a building. The power shading device 1 is installed in a room that is separated from the outside of the building by window glass or the like. As shown in FIGS. 1 to 3 , the power shading device 1 includes an electrical component 2, an end unit 3, a support member 4, an end cover 5, and a back cover 6. In this specification, when the motorized shading device 1 is installed, the direction in which the support member 4 extends is referred to as the left-right direction, and the direction perpendicular to the up-down direction and the left-right direction is referred to as the front-rear direction. In addition, in the front-rear direction, the indoor side is referred to as the front side or front side, and the outdoor side is referred to as the rear side or rear side.

[0017] The support member 4 is a head rail of a vertical blind, and is fixed to the upper surface of the window frame or the ceiling via a bracket (not shown). When fixed to the upper surface of the window frame or the ceiling, the support member 4 is arranged along the width direction of the opening in the window frame or the like. By fixing the support member 4 to the upper surface of the window frame or the ceiling, the motorized shading device 1 is arranged on the indoor side of the window. As shown in Figures 5 and 6, the support member 4 is tubular and extends along the left-right direction of a substantially rectangular shape, and is divided into front and rear sections by a plate-like wall section 7. The support member 4 has a hollow rail section 8 located in front of the wall section 7 and a hollow storage section 9 located behind the wall section 7.

[0018] The rail portion 8 is typically a C-channel shape that opens downward, and has an opening 10 that runs along the longitudinal direction of the support member 4. Carrier rails 12 for carriers 11, which will be described later, are provided on the inner surface of the rail portion 8. A pair of carrier rails 12 are provided on the inner surface of the rail portion 8 so as to face each other in the front and rear. The carrier rails 12 are composed of a pair of upper and lower plate-like protrusions that protrude from the inner surface of the rail portion 8. A cylindrical mounting portion 13 for mounting an end unit 3, which will be described later, is provided on the inner surface of the rail portion 8. The peripheral side wall of the mounting portion 13 is notched in the axial direction so as to open up part of the circumferential direction.

[0019] A plurality of carriers 11 are provided within the rail section 8. The plurality of carriers 11 are movable within the rail section 8 along the longitudinal direction of the support member 4. The plurality of carriers 11 include a master carrier 14 arranged at the front. The master carrier 14 and the plurality of carriers 11 other than the master carrier 14 have conventionally known configurations.

[0020] The master carrier 14 has a main body 15 and a suspension shaft 16. The main body 15 has a hollow case 17 and a rotational force transmission mechanism (not shown) provided within the case 17. A pair of rollers 18, 18 are rotatably supported at the front and rear ends of the case 17. The rotational force transmission mechanism has a conventionally known configuration, for example, a worm 19, a worm wheel, and a friction spring. The axis of the worm 19 runs along the left-right direction. The axis of the worm wheel runs along the up-down direction. The worm wheel meshes with external teeth formed on the worm 19. With this configuration, the worm wheel can convert rotation around a horizontal axis into rotation around a vertical axis. In other words, the worm 19 and the worm wheel form a "worm gear" in which the extension directions of a pair of gear shafts are opposite to each other. The friction spring is provided between the worm wheel and the suspension shaft 16 provided at the lower end of the worm wheel. The friction spring applies friction force to the worm wheel and the suspension shaft 16. When the suspension shaft 16 is attached to the worm wheel, it protrudes downward from the case 17. The lower end of the suspension shaft 16 is formed in a hook shape. A cylindrical lead nut 20 is provided inside the case 17. An internal thread is formed on the inner peripheral surface of the lead nut 20. The multiple carriers 11 other than the master carrier 14 have substantially the same configuration as the master carrier 14, except that they do not have the lead nut 20.

[0021] When the carrier 11 is installed within the rail portion 8, a pair of rollers 18, 18 provided on the case 17 are placed on a carrier rail 12 provided on the inner surface of the rail portion 8. In this way, multiple carriers 11 are installed within the rail portion 8 so as to be movable along the longitudinal direction of the support member 4. In this case, the suspension shaft 16 of the carrier 11 protrudes downward from the rail portion 8 through the opening 10 of the rail portion 8. A shielding material 21, which is a louver, is detachably suspended from the suspension shaft 16 of the carrier 11. The shielding material 21 is strip-shaped with its longitudinal direction extending vertically. A bag-shaped storage compartment (not shown) is formed at the upper end of the shielding material 21. The storage compartment is formed by folding back the upper end of the shielding material 21. A louver hook (not shown) is stored within the storage compartment. The louver hook has a hook portion that is exposed from the storage compartment when stored within the storage compartment. To attach the shielding material 21 to the suspension shaft 16, the hook portion of the louver hook stored in the storage section is hooked onto the hook-shaped lower end portion of the suspension shaft 16. In this way, the shielding material 21 is provided so as to be supported by the support member 4 in a suspended manner.

[0022] 5 and 6, when a plurality of carriers 11 are arranged within the rail section 8, drive shafts 22 for operating the shielding materials 21 penetrate the plurality of carriers 11. The drive shafts 22 include a rotation operation shaft 23 and an opening / closing operation shaft 24. The rotation operation shaft 23 and the opening / closing operation shaft 24 are provided within the rail section 8. When the rotation operation shaft 23 and the opening / closing operation shaft 24 are provided within the rail section 8, the axial direction of the rotation operation shaft 23 and the axial direction of the opening / closing operation shaft 24 are aligned with the longitudinal direction of the support member 4.

[0023] One axial end of the rotation operating shaft 23 is rotatably supported by the end unit 3 provided at one longitudinal end of the support member 4. The other axial end of the rotation operating shaft 23 is rotatably supported by the end unit 3 provided at the other longitudinal end of the support member 4. In this way, the rotation operating shaft 23 is disposed within the rail portion 8 so as to be rotatable about its axis.

[0024] The rotation operation shaft 23 passes through multiple carriers 11. Specifically, the rotation operation shaft 23 passes through the case 17 of the carrier 11 and the inner hole of the cylindrical worm 19 of the rotational force transmission mechanism. When the rotation operation shaft 23 passes through the case 17, the case 17 can move in the longitudinal direction of the support member 4 relative to the rotation operation shaft 23. When the rotation operation shaft 23 passes through the worm 19, spline grooves formed on the outer peripheral surface of the rotation operation shaft 23 mesh with internal teeth formed on the inner peripheral surface of the worm 19. Therefore, when the rotation operation shaft 23 passes through the carrier 11, the carrier 11 can move in the longitudinal direction of the support member 4. At this time, the worm 19 can rotate integrally with the rotation operation shaft 23.

[0025] One axial end of the opening / closing operating shaft 24 is rotatably supported by the end unit 3 provided at one longitudinal end of the support member 4. The other axial end of the opening / closing operating shaft 24 is rotatably supported by the end unit 3 provided at the other longitudinal end of the support member 4. In this way, the opening / closing operating shaft 24 is disposed within the rail portion 8 so as to be rotatable about its axis.

[0026] The opening / closing operation shaft 24 is screw-shaped with threads formed on its outer circumferential surface, and penetrates the multiple carriers 11. Specifically, the opening / closing operation shaft 24 penetrates the case 17 and lead nut 20 of the master carrier 14 and the cases 17 of the multiple carriers 11 other than the master carrier 14. When the opening / closing operation shaft 24 penetrates the case 17 of the master carrier 14 and the cases 17 of the carriers 11 other than the master carrier 14, the cases 17 can move in the longitudinal direction of the support member 4 relative to the opening / closing operation shaft 24. When the opening / closing operation shaft 24 penetrates the lead nut 20, the bolt-shaped opening / closing operation shaft 24 is threaded into the nut-shaped lead nut 20. Therefore, the opening / closing operation shaft 24 is connected only to the master carrier 14, and is not connected to the multiple carriers 11 other than the master carrier 14. With this configuration, when the opening / closing operation shaft 24 penetrates the carrier 11, the carrier 11 can move in the longitudinal direction of the support member 4.

[0027] When multiple carriers 11 are provided within the rail section 8, the master carrier 14 and the carriers 11 adjacent to it, and adjacent carriers 11, 11, are connected by strip-shaped spacer links (not shown). When adjacent carriers 11, 11, including the master carrier 14, are connected by spacer links, adjacent carriers 11, 11 can move close to or farther apart. In this case, the maximum distance between adjacent carriers 11, 11 is a predetermined distance determined by the length of the spacer links.

[0028] The accommodation section 9 is a generally rectangular groove-shaped section with the wall section 7 as its bottom wall, and is open to the rear. Because the accommodation section 9 is groove-shaped and open to the rear, it has an opening 25 along the longitudinal direction of the support member 4. A support section 27 for a motor 26 (described later) is provided on the inner surface of the accommodation section 9. A pair of support sections 27 are provided on the inner surface of the accommodation section 9, facing each other vertically. The support sections 27 are plate-shaped and protrude from the inner surface of the accommodation section 9. An attachment section 28, to which a rear cover 6 (described later) is attached, is provided at the tip of the upper side wall of the groove-shaped accommodation section 9. An engagement section 29, to which the rear cover 6 (described later) is engaged in the closed state, is provided at the tip of the lower side wall of the groove-shaped accommodation section 9. The attachment section 28 and the engagement section 29 are cylindrical. The peripheral side walls of the attachment section 28 and the engagement section 29 are notched in the axial direction to open portions in the circumferential direction.

[0029] The housing 9 accommodates the electrical equipment 2 connected to wiring 30. The electrical equipment 2 includes a motor 26 that rotates the drive shaft 22 and a control unit 31 that controls the motor 26. In this case, the wiring 30 of the electrical equipment 2 is, for example, a power cord that can supply external power to the motor 26 and the control unit 31. An end unit 3 is connected to the output shaft of the motor 26. The end unit 3 is rotated by the motor 26 to operate the shielding material 21. The end unit 3 is provided near the longitudinal end of the support member 4. The motorized shading device 1 of this embodiment can be operated, for example, by a remote controller (not shown). In this case, the control unit 31 controls the motor 26 based on a signal from the remote controller.

[0030] In this embodiment, the motor 26 includes an opening / closing motor 32 that rotates the opening / closing operating shaft 24, and a rotation motor 33 that rotates the rotation operating shaft 23. The opening / closing motor 32 is disposed within the rail portion 8 at one longitudinal end of the support member 4. The rotation motor 33 is disposed within the rail portion 8 at the other longitudinal end of the support member 4. In this embodiment, the end unit 3 is a gear unit for transmitting the rotation of the motor 26 to the drive shaft 22, and is fixed to the longitudinal end of the support member 4, straddling the storage portion 9 and the rail portion 8 so as to be interposed between the motor 26 and the drive shaft 22. When the end unit 3 is a gear unit, the end unit 3 includes at least one gear and a case that rotatably supports and stores the gear and is fixed to the longitudinal end of the support member 4. In the illustrated example, the end unit 3 includes an opening / closing gear unit 34 fixed to one longitudinal end of the support member 4, and a rotating gear unit 35 fixed to the other longitudinal end of the support member 4.

[0031] As shown in Figures 8 and 10 to 12, the opening / closing gear unit 34 includes four gears 36, 37, 38, and 39, and a case 40 that rotatably supports and houses the four gears 36, 37, 38, and 39 and is fixed to one longitudinal end of the support member 4. The case 40 has a hollow box-shaped main body 41 and a plate-shaped lid 42 that closes an opening of the main body 41. The lid 42 is fixed to the main body 41 with screws 43. The four gears 36, 37, 38, and 39 are arranged side by side in the front-to-rear direction within the case 40. Counting from the rear, the first of the four gears 36, 37, 38, and 39 is designated the first gear 36, the second gear 37, the third gear 38, and the fourth gear 39. The first gear 36, the second gear 37, and the third gear 38 are rotatable around pins 44, 45, and 46, respectively, which are provided to bridge between the bottom wall of the main body 41 and the lid 42. When the first gear 36, the second gear 37, and the third gear 38 are housed in the case 40, the second gear 37, which is disposed between the first gear 36 and the third gear 38, is in mesh with the first gear 36 and is also in mesh with the third gear 38. An output shaft 47 of the opening / closing motor 32 is connected to the first gear 36. The first gear 36 is rotatable integrally with the output shaft 47 of the opening / closing motor 32.

[0032] The case 40 is provided with a shaft 48 to which the opening / closing operation shaft 24 is connected. The shaft 48 is provided on the case 40 so as to be rotatable about its axis. A fourth gear 39 is provided on the shaft 48. The fourth gear 39 is rotatable integrally with the shaft 48 about its axis. When the fourth gear 39 is provided on the shaft 48, the fourth gear 39 is disposed inside the case 40. When the fourth gear 39 is disposed inside the case 40, the fourth gear 39 meshes with the third gear 38. The case 40 is provided with a bearing 49 that supports one axial end of the rotation operation shaft 23. The bearing 49 is disposed rearward of the shaft 48 to which the opening / closing operation shaft 24 is connected.

[0033] The opening / closing gear unit 34 is provided near one longitudinal end of the support member 4. For example, as shown in FIG. 8 , the opening / closing gear unit 34 is provided at one longitudinal end of the support member 4. In this case, the opening / closing gear unit 34 is attached to the support member 4 by screwing a screw 50 into the support member 4 through the case 40 with the case 40 in contact with one longitudinal end face of the support member 4. When the opening / closing gear unit 34 is attached to the support member 4, the first gear 36 to which the opening / closing motor 32 is connected is located at a position corresponding to the housing portion 9 of the support member 4, and the shaft portion 48 and bearing portion 49 to which the opening / closing operation shaft 24 is connected are located at positions corresponding to the rail portion 8 of the support member 4. Therefore, the opening / closing gear unit 34 is fixed to one longitudinal end of the support member 4, straddling the housing portion 9 and the rail portion 8 so as to be interposed between the opening / closing motor 32 and the opening / closing operation shaft 24. When the opening / closing gear unit 34 is attached to the support member 4, the output shaft 47 of the opening / closing motor 32 is connected to the first gear 36 so as to rotate integrally therewith, and one axial end of the opening / closing operating shaft 24 is connected to the shaft portion 48 provided on the case 40 so as to rotate integrally therewith.

[0034] As shown in FIG. 13 , the rotary gear unit 35 includes a first gear 51, a second gear (not shown), and a case 52 that rotatably supports and houses the first gear 51 and the second gear and is fixed to the other longitudinal end of the support member 4. The case 52 has a hollow box-shaped main body 53 and a plate-shaped lid 54 that closes the opening of the main body 53. The lid 54 is fixed to the main body 53 with screws. The first gear 51 and the second gear are arranged side by side in the front-to-rear direction within the case 52. The first gear 51 is arranged on the rear side, and the second gear is arranged on the front side. The first gear 51 is rotatable around a pin 55 that is provided to bridge between the bottom wall of the main body 53 and the lid 54.

[0035] The case 52 is provided with a shaft 56 to which the rotation operation shaft 23 is connected. The shaft 56 is provided on the case 52 so as to be rotatable about its axis. A second gear is provided on the shaft 56. The second gear is rotatable integrally with the shaft 56 about its axis. When the second gear is provided on the shaft 56, the second gear is disposed within the case 52. When the second gear is disposed within the case 52, the second gear meshes with the first gear 51. The case 52 is provided with a bearing 57 that supports the other axial end of the opening / closing operation shaft 24. The bearing 57 is disposed forward of the shaft 56 to which the rotation operation shaft 23 is connected. The case 52 has an accommodation hole 59 for accommodating a third gear 58, which is disposed rearward of the first gear 51, within the case 52. The third gear 58 is connected to an output shaft 60 of the rotary motor 33. The third gear 58 is rotatable integrally with the output shaft 60 of the rotary motor 33 around its axis.

[0036] The rotation gear unit 35 is provided near the other longitudinal end of the support member 4. The rotation gear unit 35 is provided, for example, at the other longitudinal end of the support member 4. In this case, with the case 52 in contact with the other longitudinal end face of the support member 4, a screw is threaded into the support member 4 via the case 52, thereby attaching the rotation gear unit 35 to the support member 4. With the rotation gear unit 35 attached to the support member 4, the accommodation hole 59 formed in the case 52 is located at a position corresponding to the accommodation portion 9 of the support member 4, and the shaft portion 56 and bearing portion 57 to which the rotation operating shaft 23 is connected are located at positions corresponding to the rail portion 8 of the support member 4. Therefore, the rotation gear unit 35 is fixed to the other longitudinal end of the support member 4, straddling the accommodation portion 9 and the rail portion 8, so as to be interposed between the rotation motor 33 and the rotation operating shaft 23. When the rotation gear unit 35 is attached to the support member 4, the first gear 51 is engaged with a third gear 58 provided on the output shaft 60 of the rotation motor 33, and the other axial end of the rotation operating shaft 23 is connected to a shaft portion 56 provided on the case 52 so as to be rotatable together.

[0037] 3, the control unit 31 is provided in the housing portion 9 of the support member 4. When the control unit 31 is provided in the housing portion 9, the power cord, which is the wiring 30 of the electrical component 2, is led out of the support member 4 through the opening 25 of the housing portion 9.

[0038] With this configuration, the support member 4 has an accommodation section 9 that is open along the longitudinal direction so that the electrical equipment 2 can be accommodated and the wiring 30 of the electrical equipment 2 can be led out, and a rail section 8 that is open along the longitudinal direction of the support member 4 so that a drive system including a drive shaft 22 that operates the shielding material 21 can be disposed. Here, the drive system includes a plurality of carriers 11 in addition to the drive shaft 22. The shielding material 21 can be opened and closed by moving the plurality of carriers 11 in the longitudinal direction of the support member 4. That is, the shielding material 21 can be folded into the longitudinal end of the support member 4 and can be expanded from the folded state. The shielding material 21 can be rotated by rotating the suspension shafts 16 of the plurality of carriers 11. The opening, closing, and rotation of the shielding material 21 are performed by driving a motor 26.

[0039] To open or close the shielding material 21, it is sufficient to drive the opening / closing motor 32. By driving the opening / closing motor 32, the opening / closing operation shaft 24, which is connected to the opening / closing motor 32 via the opening / closing gear unit 34, can be rotated around its axis. By rotating the opening / closing operation shaft 24, the master carrier 14, which has the lead nut 20 into which the opening / closing operation shaft 24 is screwed, can be moved in the longitudinal direction of the support member 4.

[0040] 1 in which the master carrier 14 is located at the other end in the longitudinal direction of the support member 4, when a signal to put the shielding material 21 into the folded state is input from the remote controller to the control unit 31, the control unit 31 drives the opening / closing motor 32 to rotate the opening / closing operation shaft 24 so that the master carrier 14 moves toward one end in the longitudinal direction of the support member 4. When the master carrier 14 moves toward one end in the longitudinal direction of the support member 4, the multiple carriers 11 other than the master carrier 14 are pushed one by one by the master carrier 14, and can move toward one end in the longitudinal direction of the support member 4. When the master carrier 14 is in the folded state in which the master carrier 14 is located at one end in the longitudinal direction of the support member 4, when a signal to put the shielding material 21 into the deployed state is input from the remote controller to the control unit 31, the control unit 31 drives the opening / closing motor 32 to rotate the opening / closing operation shaft 24 in the opposite direction to the previous rotation so that the master carrier 14 moves toward the other end in the longitudinal direction of the support member 4. When the master carrier 14 moves to the other end in the longitudinal direction of the support member 4, and the distance between the master carrier 14 and the adjacent carrier 11 reaches a maximum, the master carrier 14 can pull the carrier 11 adjacent to it by means of the spacer link. Other adjacent carriers 11, 11 can also be moved to the other end in the longitudinal direction of the support member 4 in the same manner as described above.

[0041] To rotate the shielding materials 21, the rotation motor 33 is driven. By driving the rotation motor 33, the rotation operation shaft 23, which is connected to the rotation motor 33 via the rotation gear unit 35, can be rotated about its axis. By rotating the rotation operation shaft 23, all of the shielding materials 21 can be rotated at once. Rotating the rotation operation shaft 23 rotates the worm 19. Rotating the worm 19 rotates the worm wheel that meshes with the worm 19. The rotation of the worm wheel is transmitted to the suspension shaft 16 of the carrier 11 via a friction spring. This allows all of the shielding materials 21 to rotate. Note that when a load or the like is applied to the shielding materials 21 and the suspension shaft 16 cannot rotate, the worm wheel can be made to rotate freely relative to the suspension shaft 16 by the friction spring. This makes it possible to limit the rotation range of the suspension shaft 16.

[0042] 2 and 3, an end cover 5 is attached to the longitudinal end of the support member 4. Specifically, when the opening / closing gear unit 34 is attached to the support member 4, an end cover 61 is attached to one longitudinal end of the support member 4, and when the rotation gear unit 35 is attached to the support member 4, an end cover 62 is attached to the other longitudinal end of the support member 4. In the illustrated example, the end covers 61, 62 are bilaterally symmetrical. Therefore, here, only the end cover 61 attached to one longitudinal end of the support member 4 will be described.

[0043] As shown in FIG. 9 , the end cover 61 has a base 63 and a protective piece 64. The base 63 is a hollow box-like, generally rectangular shape in side view, and is open to the other longitudinal end of the support member 4. The box-like base 63 has a plate-like bottom wall 65, an upper wall 66 provided at the upper end of the bottom wall 65, a lower wall 67 provided at the lower end of the bottom wall 65, and a front wall 68 provided at the front end of the bottom wall 65, but does not have a rear wall provided at the rear end of the bottom wall 65. The protective piece 64 is a generally rectangular plate-like shape in rear view. The protective piece 64 is provided in the shape of a wall at the rear end of the bottom wall 65 and protrudes from the bottom wall 65 of the base 63 to the other longitudinal end of the support member 4.

[0044] As shown in FIGS. 7 and 8 , the end cover 61 is attached to one longitudinal end of the support member 4 so as to close the opening at one longitudinal end of the support member 4. Specifically, the end cover 61 is attached to the support member 4 in a state where the opening at one longitudinal end of the support member 4 faces the bottom wall 65 of the base 63 and the opening / closing gear unit 34 is housed in the base 63. When the end cover 61 is attached to the support member 4, the protective piece 64 of the end cover 61 covers part of the opening 25 of the housing 9 and also covers the rear side of the opening / closing gear unit 34 and the rear side of the output shaft 47 of the opening / closing motor 32. Note that it is sufficient for the protective piece 64 of the end cover 61 to cover the rear side of the opening / closing gear unit 34. In other words, the protruding length of the protective piece 64 from the base 63 is sufficient to cover at least the opening / closing gear unit 34.

[0045] As described above, the end covers 61, 62 are bilaterally symmetrical. Therefore, the end cover 62 is attached to the other longitudinal end of the support member 4 with the opening at the other longitudinal end of the support member 4 facing the bottom wall 65 of the base 63 and the rotation gear unit 35 housed in the base 63. At this time, the protective piece 64 of the end cover 62 covers part of the opening 25 of the housing 9, and also covers the rear side of the rotation gear unit 35 and the rear side of the output shaft 60 of the rotation motor 33.

[0046] With this configuration, the end cover 5 has a base 63 that faces the opening formed at the longitudinal end of the support member 4, and a protective piece 64 that protrudes from the base 63 in the longitudinal direction of the support member 4 and closes the opening 25 of the accommodating section 9 in at least a first region from the base 63 to a position where it overlaps with the end unit 3. It is preferable that the protective piece 64 closes the opening 25 of the accommodating section 9 in a region from the base 63 to a position where it overlaps with the output shaft of the motor 26.

[0047] As shown in FIGS. 2 and 4 to 6 , a plate-shaped rear cover 6 is attached to the rear side of the support member 4. The rear cover 6 closes a second region of the opening 25 of the storage section 9, which opens on the rear side of the support member 4, excluding the first region. In the illustrated example, the rear cover 6 closes the region of the opening 25 of the storage section 9 between the protective pieces 64, 64 of the end covers 61, 62. The rear cover 6 has a plate-shaped cover section 69 that is generally rectangular in rear view, a hinge section 70 provided at the upper end of the cover section 69, an insertion section 71 provided at the front end of the hinge section 70, and an engagement section 72 provided on the cover section 69. The hinge section 70 is plate-shaped and extends forward from the upper end of the cover section 69. The insertion section 71 is plate-shaped and extends upward from the front end of the hinge section 70. A pair of upper and lower protrusions 73, 73 are provided on the front and rear surfaces of the insertion portion 71. The pair of upper and lower protrusions 73, 73 provided on the front surface of the insertion portion 71 protrude forward from the front surface of the insertion portion 71. The pair of upper and lower protrusions 73, 73 provided on the rear surface of the insertion portion 71 protrude rearward from the rear surface of the insertion portion 71. The engagement portion 72 is plate-shaped and is provided on the front surface of the cover portion 69. The engagement portion 72 extends forward from the cover portion 69. A protrusion 74 that protrudes downward is provided at a midpoint in the front-to-rear direction of the engagement portion 72. The rear cover 6 is integrally formed from an elastic material.

[0048] To attach the rear cover 6 to the support member 4, the insertion portion 71 is inserted into the mounting portion 28 of the storage portion 9. The insertion portion 71 of the rear cover 6 is inserted into the mounting portion 28 through an open portion of the mounting portion 28, which is partially open in the circumferential direction. When the insertion portion 71 is inserted into the mounting portion 28, both open ends of the mounting portion 28 are inserted between a pair of upper and lower protrusions 73, 73. When the rear cover 6 is attached in this manner, the cover portion 69 of the rear cover 6 can close the second region of the opening 25 of the storage portion 9. As described above, the rear cover 6 is made of an elastic material and can be opened and closed by elastically deforming the hinge portion 70. Therefore, work inside the support member 4 can be performed by opening the rear cover 6 without removing it from the support member 4. When the opening 25 of the storage portion 9 is closed by the rear cover 6, the engagement portion 72 of the rear cover 6 engages with the engagement portion 29 of the storage portion 9. Specifically, the protrusion 74 provided on the engaging portion 72 engages between both open ends of the engaged portion 29, which has a partially open circumferential portion. This allows the rear cover 6 to keep the opening 25 of the storage portion 9 closed.

[0049] As shown in Figures 5 and 6, the hinge portion 70 of the rear cover 6 is plate-shaped, with the plate surface facing up and down. The hinge portion 70 is a portion that is repeatedly bent by repeatedly opening and closing the rear cover 6. If the hinge portion 70 is repeatedly bent, for example, if the rear cover 6 is made of resin, the upper plate surface of the hinge portion 70 may turn white. In the present embodiment, the portion that turns white faces upward, and therefore is not noticeable when looking up at the support member 4 from the rear side with the electric shading device 1 installed.

[0050] 7 to 9, the protective piece 64 of the end cover 5 has a concave wiring lead-out portion 75 that leads the wiring 30 of the electrical component 2 from inside the accommodating portion 9 to the outside. The wiring lead-out portion 75 communicates with the accommodating portion 9 in the second area when the accommodating portion 9 in the second area is closed by the rear cover 6. In the illustrated example, the protective piece 64 of the end cover 5 has a pair of upper and lower wiring lead-out portions 75, 75.

[0051] As described above, the wiring lead-out portion 75 has a recessed shape recessed forward. The wiring lead-out portion 75 has a first piece 76 extending forward from a portion of the protective piece 64 and a second piece 77 extending obliquely rearward from the first piece 76, and is generally V-shaped in side view. With this configuration, the wiring lead-out portion 75 communicates with a portion of the internal space of the housing portion 9 corresponding to the second region when the rear cover 6 closes the second region of the opening 25 of the housing portion 9. That is, the portion of the internal space of the housing portion 9 corresponding to the second region communicates with the outside of the housing portion 9 via the wiring lead-out portion 75. Therefore, when the rear cover 6 is closed, the wiring 30 of the electrical component 2 can be led from the inside of the support member 4 to the outside via the wiring lead-out portion 75.

[0052] The protective piece 64 has slits 78 formed along the longitudinal direction of the support member 4, which allow elastic deformation of the portion that constitutes the wiring lead-out portion 75. In the illustrated example, the slits 78 are formed in the front end of the first piece 76 and the rear end of the second piece 77. The slits 78 formed in the rear end of the second piece 77 separate the rear end of the second piece 77 from a part of the protective piece 64. With this configuration, the second piece 77 of the wiring lead-out portion 75 can elastically deform forward.

[0053] As described above, the motorized shading device 1 can operate the shielding material 21 by rotating the drive shaft 22 using the motor 26. As shown in Figures 10, 11, and 13 to 17, the motor fixing structure applied to the motorized shading device 1 includes a support member 4, an end unit 3, a motor mount 79, a connecting means 80, and a plate material 81. The support member 4 and the end unit 3 have the configurations described above. The support member 4 is hollow and can support the shielding material 21 in a suspended state. The end unit 3 is fixed to the longitudinal end of the support member 4.

[0054] The motor mount 79 is fitted inside the support member 4 while accommodating at least a portion of the motor 26. In the illustrated example, the motor mount 79 includes an opening / closing motor mount 82 that accommodates the opening / closing motor 32, and a rotation motor mount 83 that accommodates the rotation motor 33. The opening / closing motor mount 82 and the rotation motor mount 83 are bilaterally symmetrical. Therefore, only the opening / closing motor mount 82 will be described here.

[0055] The opening / closing motor mount 82 is a cylindrical shape with a bottom and one axial end closed. The opening / closing motor mount 82 has an attachment portion 84 that is fixed to the housing portion 9 while abutting against the wall portion 7 of the support member 4, and a bulge portion 85 provided on the attachment portion 84. The attachment portion 84 is a groove-like portion that is generally rectangular in side view and opens to the rear. Locking portions 86 for fixing the opening / closing motor mount 82 to the support member 4 are provided at the tips of both side walls of the groove-shaped attachment portion 84. The locking portions 86 are stepped and recessed forward, and are formed on the outside of the tips of the side walls. A recess 87 recessed rearward is formed on the outer surface of the bottom wall of the attachment portion 84. As a result, the attachment portion 84 has a planar upper side surface portion 88 located above the recess 87 and a planar lower side surface portion 89 located below the recess 87. The bulging portion 85 is a plate-like member curved to bulge rearward and is provided to bridge between the side walls of the mounting portion 84. In this manner, the opening / closing motor mount 82 is formed in a cylindrical shape. One axial end of the cylindrical opening / closing motor mount 82 is closed by a plate-like wall piece 90. The wall piece 90 has a through-hole 91 through which a portion of the opening / closing motor 32 passes and an insertion hole 92 used to secure the plate member 81 to the opening / closing motor 32. The through-hole 91 penetrates the thickness of the wall piece 90. The insertion holes 92 penetrate the thickness of the wall piece 90 and are arranged in multiple numbers around the through-hole 91. The through-hole 91 and each of the multiple insertion holes 92 are continuous with each other and integrally formed. The opening / closing motor mount 82 has vibration-absorbing properties. The opening / closing motor mount 82 is made of, for example, silicon.

[0056] The connecting means 80 is a means for connecting the end unit 3 and the motor mount 79. As described above, the opening / closing motor mount 82 and the rotation motor mount 83 are symmetrical. Therefore, the connecting means 80 has a connecting means 93 that connects the end unit 3 located at one longitudinal end of the support member 4 to the opening / closing motor mount 82, and a connecting means 94 that connects the end unit 3 located at the other longitudinal end of the support member 4 to the rotation motor mount 83. These two connecting means 93, 94 have the same configuration, so here we will explain the connecting means 93 that connects the end unit 3 located at one longitudinal end of the support member 4 to the opening / closing motor mount 82.

[0057] The connecting means 93 is configured, for example, by fitting a fitting portion 95 formed on the case 40 of the end unit 3 with a fitted portion 96 formed on the opening / closing motor mount 82. The fitting portion 95 has an extending portion 97 extending from the case 40 along the longitudinal direction of the support member 4 and a claw portion 98 provided at the tip of the extending portion 97. The extending portion 97 is plate-shaped and provided on the bottom of the box-shaped case 40. The claw portion 98 is plate-shaped and extends in a direction intersecting the plate surface of the extending portion 97 and extends outward from the extending portion 97. The fitted portion 96 is a through-hole into which the fitting portion 95 is inserted, and is open at both axial ends. The fitted portion 96 is a hole-shaped portion formed through a protrusion 99 formed to protrude outward from the bulge portion 85 and extending along the longitudinal direction of the support member 4. With this configuration, the opening / closing motor mount 82 and the case 40 of the end unit 3 can be connected by inserting the fitting portion 95 into the through-hole-shaped fitting portion 96. Therefore, the connecting means 93 can detachably connect the case 40 and the opening / closing motor mount 82. During connection, the claw portion 98 prevents the fitting portion 95 from coming off the fitting portion 96. Note that in this embodiment, the opening / closing motor mount 82 may be provided with the fitting portion 95, and the end unit 3 may be provided with the fitting portion 96. That is, the connecting means 93 is configured by fitting the fitting portion 95 formed on either the case 40 or the opening / closing motor mount 82 with the fitting portion 96 formed on the other of the case 40 or the opening / closing motor mount 82. Note that the rotation motor mount 83 is connected to the end unit 3 by the connecting means 94, as in the case of the opening / closing motor mount 82.

[0058] The plate member 81 restricts the relative rotation of the motor 26 with respect to the motor mount 79 when the motor 26 is housed in the motor mount 79. In the illustrated example, the plate member 100 restricting the relative rotation of the opening / closing motor 32 with respect to the opening / closing motor mount 82 and the plate member 101 restricting the relative rotation of the rotation motor 33 with respect to the rotation motor mount 83 have the same configuration. Therefore, here, only the plate member 100 restricting the relative rotation of the opening / closing motor 32 with respect to the opening / closing motor mount 82 will be described.

[0059] The plate material 100 is plate-shaped and has, for example, an abutting portion 102 that abuts against the opening / closing motor mount 82 and an engaging portion 103 that engages with a portion of the opening / closing motor mount 82. The abutting portion 102 is plate-shaped, with the plate surface facing left and right. The abutting portion 102 has a through-hole 104 through which a portion of the opening / closing motor 32 passes, and a fixing hole 105 for fixing the plate material 100 to the opening / closing motor 32. The through-hole 104 penetrates the abutting portion 102 in the thickness direction. The fixing hole 105 penetrates the abutting portion 102 in the thickness direction, and multiple fixing holes 105 are arranged around the through-hole 104. The through-hole 104 and the multiple fixing holes 105 are continuous with each other and formed integrally. The fixing portion 103 is convex and protrudes from the abutting portion 102. In the illustrated example, the locking portions 103 are plate-shaped and are provided at the front end of the abutting portion 102, spaced apart from each other in the vertical direction. The locking portions 103 extend from the abutting portion 102 along the longitudinal direction of the support member 4. The open / close motor mount 82, to which the locking portions 103 are locked, has recessed locked portions 106 to which the locking portions 103 are locked. In the illustrated example, the locked portions 106 are provided at the bottom wall of the groove-shaped mounting portion 84, spaced apart from each other in the vertical direction. The recessed locked portions 106 are formed in the mounting portion 84 so as to open outward. The upper locked portion 106 corresponds to the upper side surface portion 88 in the front-rear direction. In other words, the upper locked portion 106 is located behind the upper side surface portion 88. The lower locked portion 106 corresponds to the lower side surface portion 89 in the front-rear direction. That is, the lower locked portion 106 is located behind the lower side surface portion 89 .

[0060] The plate material 100 is provided on the wall piece 90 of the open / close motor mount 82. The plate material 100 is provided on the open / close motor mount 82 with the locking portion 103 inserted into the locked portion 106 and the abutting portion 102 abutting against the outer surface of the wall piece 90. The open / close motor 32 is housed inside the open / close motor mount 82. In this case, the output shaft 47 of the open / close motor 32 passes through the through hole 91 of the wall piece 90 and the through hole 104 of the plate material 100. In the illustrated example, when the open / close motor 32 is housed in the open / close motor mount 82, a part of the open / close motor 32 protrudes and is exposed outward from the opening on the other axial side of the open / close motor mount 82. With the plate material 100 and the opening / closing motor 32 mounted on the opening / closing motor mount 82 in this manner, a screw 107 is screwed into the opening / closing motor 32 through the fixing hole 105 of the plate material 100 and the insertion hole 92 of the wall piece 90. A rolled bushing 1071 is provided between the screw 107 and the opening / closing motor 32 as a spacer through which the screw 107 passes. When the screw 107 is fastened, the rolled bushing 1071 protects the opening / closing motor mount 82 so that the insertion hole 92 of the wall piece 90 does not interfere with the screw 107 and cause damage or crush the wall piece 90. Therefore, the plate material 100 is fixed from the outside of the opening / closing motor mount 82 to the opening / closing motor 32, at least a portion of which is housed in the opening / closing motor mount 82. The opening / closing motor 32 is prevented from coming off the opening / closing motor mount 82. As with the opening / closing motor mount 82, the rotation motor mount 83 has a plate member 101 fixed thereto and houses the rotation motor 33 therein.

[0061] Next, a method for fixing the motor 26 to the support member 4 will be described. To fix the opening / closing motor 32 to the support member 4, first, the opening / closing motor 32 is coupled to the opening / closing gear unit 34. As described above, the opening / closing motor 32 is held in a state housed in the opening / closing motor mount 82 using the plate member 100. As shown in FIGS. 11 and 14, a first coupling member 108 is provided on the output shaft 47 of the opening / closing motor 32 so as to rotate integrally therewith. The first coupling member 108 has a cylindrical first main body portion 109 and a pair of first claws 110, 110 provided on the first main body portion 109. The first main body portion 109 has a disk-shaped flange portion 111 extending radially outward. The pair of first claws 110, 110 are provided on the flange portion 111 of the first main body portion 109 along the axial direction of the first main body portion 109. The pair of first claws 110, 110 are provided at corresponding positions in the radial direction of the first body portion 109 so as to sandwich the first body portion 109. The pair of first claws 110, 110 are arc-shaped with their center at the axis of the first body portion 109. The first coupling member 108 configured as described above is provided so as to be rotatable integrally with the output shaft 47 of the open / close motor 32 when the output shaft 47 of the open / close motor 32 is inserted into the cylindrical first body portion 109. A retaining ring 112 prevents the first coupling member 108 from slipping off the output shaft 47 of the open / close motor 32. The retaining ring 112 is a substantially C-shaped plate and is engaged with a groove 113 provided in the circumferential direction of the output shaft 47 of the open / close motor 32.

[0062] The opening / closing motor 32, which is housed in the opening / closing motor mount 82 and provided with the first coupling member 108, is connected to a boss portion 115 of the first gear 36 via a second coupling member 114. The second coupling member 114 is made of an elastic material and has a disk-shaped second main body portion 116 and a pair of second claws 117, 117 provided on the second main body portion 116. The pair of second claws 117, 117 are provided on one plate surface of the second main body portion 116 along the axial direction of the second main body portion 116. The pair of second claws 117, 117 are provided at positions corresponding to the radial direction of the second main body portion 116. The pair of second claws 117, 117 are arc-shaped with the axis of the second main body portion 116 as their center. Grooves 118 that open outward are provided on the outer peripheral surface of the second claws 117 along the axial direction of the second main body 116. The boss 115 of the first gear 36 is cylindrical, and has a pair of insertion portions 119, 119 on its inner peripheral surface that are inserted into the grooves 118 of the second coupling member 114. The pair of insertion portions 119, 119 protrude radially inward from the inner peripheral surface of the boss 115. The pair of insertion portions 119, 119 are provided at positions that correspond to the radial direction of the boss 115.

[0063] 11 , the first coupling member 108 and the second coupling member 114 provided on the output shaft 47 of the opening / closing motor 32 are engaged with each other, and the second coupling member 114 is provided on the boss portion 115 of the first gear 36, so that the opening / closing motor 32 housed in the opening / closing motor mount 82 is connected to the first gear 36. The engagement between the first coupling member 108 and the second coupling member 114 is achieved by the first claw portion 110 of the first coupling member 108 being engaged with the second claw portions 117 of the second coupling member 114, and the second claw portion 117 of the second coupling member 114 being engaged with the first claw portions 110 of the first coupling member 108. With the second coupling member 114 housed in the boss portion 115 of the first gear 36, an insertion portion 119 formed on the boss portion 115 is inserted into a groove portion 118 of the second coupling member 114, thereby attaching the second coupling member 114 to the boss portion 115 of the first gear 36. As shown in FIG. 10 , the opening / closing motor mount 82 housing the opening / closing motor 32 and the opening / closing gear unit 34 are connected by the connecting means 93 as described above. In this way, the opening / closing motor 32 and the opening / closing gear unit 34 are detachably connected.

[0064] As described above, the opening / closing motor 32 is connected to the first gear 36 via the second coupling member 114 made of an elastic material. Therefore, it is possible to suppress the vibration from the output shaft 47 of the opening / closing motor 32 from propagating to the tip of the output shaft 47, thereby reducing operating noise.

[0065] As described above, the support member 4 has the wall portion 7 that defines the accommodation portion 9 that accommodates the motor mount 79. With the opening / closing motor 32 and the opening / closing gear unit 34 coupled together, the opening / closing motor mount 82 accommodating the opening / closing motor 32 is inserted into the support member 4 from the opening at one longitudinal end of the support member 4. At this time, the attachment portion 84 of the opening / closing motor mount 82 is inserted into the space between the wall portion 7 and the pair of support portions 27, 27 formed in the accommodation portion 9. After the opening / closing motor mount 82 is accommodated in the support member 4, the opening / closing gear unit 34 is fixed to one longitudinal end of the support member 4. In the illustrated example, with the opening / closing gear unit 34 in contact with one longitudinal end of the support member 4, screws 50 are threaded through the case 40 of the opening / closing gear unit 34 into the mounting portion 13 formed on the rail portion 8, the mounting portion 28 formed on the accommodation portion 9, and the engaged portion 29, thereby fixing the opening / closing gear unit 34 to one longitudinal end of the support member 4. As shown in FIGS. 16 and 17 , with the opening / closing gear unit 34 fixed to the support member 4, the opening / closing motor mount 82 is fitted inside the support member 4. Specifically, the upper side surface portion 88 and the lower side surface portion 89 come into contact with the wall portion 7, and the pair of supports 27, 27 formed on the accommodation portion 9 are engaged with the stepped engaging portion 86 of the mounting portion 84, thereby fixing the opening / closing motor mount 82 inside the support member 4.

[0066] Thereafter, an end cover 61 is fixed to one longitudinal end of the support member 4. The end cover 61 is fixed to the support member 4 with the opening / closing gear unit 34 disposed inside the base 63. At this time, the protective piece 64 of the end cover 61 covers the rear side of the opening / closing gear unit 34 and the rear side of the output shaft 47 of the opening / closing motor 32, thereby closing off part of the opening 25 of the storage section 9.

[0067] To fix the rotary motor 33 to the support member 4, first, the rotary motor 33 is coupled to the rotary gear unit 35. As described above, the rotary motor 33 is held in a state housed in the rotary motor mount 83 using the plate member 101. As described above, the third gear 58 is provided on the output shaft 60 of the rotary motor 33 so as to rotate integrally therewith. To couple the rotary motor 33 to the rotary gear unit 35, the output shaft 60 of the rotary motor 33 is inserted into the case 52 through the accommodation hole 59, and the third gear 58 provided on the output shaft 60 of the rotary motor 33 is meshed with the first gear 51. At this time, the rotary motor mount 83 is positioned relative to the case 52. For this purpose, the rotary motor mount 83 is formed so as to be engageable with a positioning portion 120 formed on the case 52. The positioning portion 120 is a U-shaped plate that opens forward. The mounting portion 84 of the rotation motor mount 83, excluding the inner edge, protrudes in the shape of a groove that opens rearward. Therefore, by fitting the protruding portion 121 of the mounting portion 84 of the rotation motor mount 83 into the positioning portion 120, the rotation motor mount 83 is positioned relative to the case 52. As a result, the third gear 58 is positioned appropriately to mesh with the first gear 51. With the third gear 58 meshing with the first gear 51, the rotation motor mount 83 and the rotation gear unit 35 are coupled by the coupling means 94 as described above. In this way, the rotation motor 33 and the rotation gear unit 35 are detachably coupled. Note that the second coupling member 114 described above is not provided between the rotation motor 33 and the rotation gear unit 35, but the rotation motor mount 83 is accurately positioned relative to the case 52 by the protruding portion 121 and the positioning portion 120 as described above. Therefore, it is possible to design the gear that rotates integrally with the output shaft 60 of the rotation motor 33 without increasing the gear diameter. Also, the rotation motor 33 is driven for a shorter period of time than the opening / closing motor 32. Therefore, the operating noise caused by vibrations associated with the driving of the rotation motor 33 is not so great that it needs to be reduced.

[0068] With the rotation motor 33 and the rotation gear unit 35 coupled together, the rotation motor mount 83 housing the rotation motor 33 is inserted into the support member 4 from the opening on the other longitudinal end side of the support member 4 and fitted to the support member 4. This is done in the same manner as the opening / closing motor mount 82. Thereafter, the rotation gear unit 35 is fixed to the other longitudinal end of the support member 4 in the same manner as the opening / closing gear unit 34. After the rotation gear unit 35 is fixed to the support member 4, the end cover 62 is fixed to the other longitudinal end of the support member 4 in the same manner as described above.

[0069] In this manner, the motor mount 79, which houses at least a portion of the motor 26, is connected by the connecting means 80 to the end unit 3 fixed to the longitudinal end of the support member 4. Thereafter, as described above, the motor mount 79 is inserted from the longitudinal end of the support member 4, thereby fitting the motor mount 79 into the inside of the support member 4. Then, as described above, the end unit 3 is fixed to the longitudinal end of the support member 4.

[0070] In this embodiment, the end unit 3 fixed to the support member 4 and the motor mount 79 are connected by a connecting means 80. Therefore, simply connecting the motor mount 79 to the end unit 3 can restrict movement of the motor mount 79 in the thrust direction, which makes it easier to fix the motor 26 and motor mount 79 to the support member 4 so that they cannot move, while preventing noise from the motor 26.

[0071] In this embodiment, the electric shading device 1 is an electric vertical blind in which the end unit 3 is a gear unit. Therefore, the present invention can be suitably applied to an electric shading device 1 configured such that a gear unit is provided at the end of the support member 4, such as an electric vertical blind.

[0072] In this embodiment, the connecting means 80 is configured by fitting a fitting portion 95 and a fitted portion 96. Therefore, the end unit 3, which is a gear unit, and the motor mount 79 can be connected with an easier and simpler structure.

[0073] In this embodiment, the motor 26 can be fixed inside the support member 4 simply by inserting the motor 26 and motor mount 79 connected to the end unit 3 from the longitudinal end of the support member 4, making it easier to fix the motor 26 to the support member 4.

[0074] The present invention is not limited to the above-described embodiment, and includes modifications and improvements within the scope of achieving the object of the present invention.

[0075] In the above embodiment, the electric shading device 1 is an electric vertical blind, but is not limited to this. For example, the electric shading device 1 may be an electric horizontal blind, a pleated screen, or a honeycomb screen. [Explanation of symbols]

[0076] 1 Electric shielding device 2 Electrical equipment 3 End Unit 4 Support member 8 Rail section 9 Storage section 21 Shielding material 22 Drive shaft 26 Motor 36 1st Gear 37 2nd Gear 38 3rd Gear 39 4th Gear 40 cases 51 1st Gear 52 cases 58 3rd Gear 79 Motor mount 80 Connection means 95 Fitting part 96 Engaged part

Claims

1. A motor fixing structure of an electric shading device that operates a shading material by rotating a drive shaft with a motor, a hollow support member that suspends and supports the shielding material; an end unit fixed to a longitudinal end of the support member; a motor mount having vibration absorption properties that is fitted inside the support member while accommodating at least a portion of the motor; a connecting means for connecting the end unit and the motor mount.

2. the support member has an accommodation portion that opens along the longitudinal direction so as to be able to accommodate electrical equipment including the motor, and a rail portion that opens along the longitudinal direction so as to be able to arrange a drive system including the drive shaft, 2. The motor fixing structure of claim 1, wherein the end unit is a gear unit for transmitting rotation of the motor to the drive shaft, the end unit being fixed to the longitudinal end of the support member across the accommodating portion and the rail portion so as to be interposed between the motor and the drive shaft.

3. the gear unit includes at least one gear and a case that rotatably supports and houses the gear and is fixed to an end portion of the support member in a longitudinal direction; 3. The motor fixing structure according to claim 2, wherein the connecting means detachably connects the case and the motor mount.

4. 4. The motor fixing structure according to claim 3, wherein the connecting means is configured by fitting a fitting portion formed on one of the case and the motor mount with a fitted portion formed on the other of the case and the motor mount.

5. A method for fixing a motor of an electric shading device that operates a shading material by rotating a drive shaft with a motor, a motor mount having vibration absorption properties and accommodating at least a portion of the motor is connected by a connecting means to an end unit fixed to a longitudinal end of a hollow support member that supports the shielding material in a suspended state; The motor mount is inserted into the support member from a longitudinal end of the support member, and fitted into the support member; A motor fixing method, comprising fixing the end unit to the longitudinal end of the support member.

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