JP7611083B2 - Operating device for solar shading device and solar shading device - Google Patents

Description

The present invention relates to an operating device for a solar shading device and a solar shading device.

Conventionally, there is known a solar shading device that raises and lowers a shading material suspended from a head box (head rail) using a looped lifting and lowering cord. For example, there is a twin-type solar shading device that raises and lowers two shading materials suspended from a head box. In this solar shading device, a single looped lifting and lowering cord can be used to switch between raising and lowering either of the two shading materials, allowing each to be raised and lowered independently (see, for example, Patent Document 1).

The solar shading device described in Patent Document 1 is configured so that the double shading materials can be lifted independently with a single operating cord, and a clutch unit and a stopper unit are provided that allow the operation of lifting each shading material, lowering it under its own weight, or preventing it from lowering under its own weight to be selected by operating one side of the operating cord.

The clutch unit has a cam drum with a cam groove formed on its circumferential surface. The raising and lowering of the shielding material is controlled by the clutch ball moving in the cam groove in response to the rotation of the cam drum. The cam drum can be rotated in the forward and reverse directions (winding and unwinding directions) by pulling the operating cord.

Patent No. 6523029

However, it has been found that when the shielding material is folded up, it may not be possible to disengage the clutch unit from its engaged state, making it difficult to lower the shielding material.

The present invention was made in consideration of the above problems, and aims to provide a technology that can reliably lower the shielding material even when the shielding material is folded up.

In order to solve the above problems, the operating device for a solar shading device according to the present invention is used for operating the raising and lowering of a shading material supported so as to be freely raised and lowered on a lifting shaft rotatably supported within the head rail of the solar shading device, and comprises a cord pulley to which one end of an operating cord used for operating the raising and lowering of the shading material is fixed and which allows the operating cord to be wound up and pulled out, a clutch unit that restricts the rotation of the lifting shaft in the direction in which the shading material descends under its own weight, and a rotatable one-way clutch device that is provided between the cord pulley and the clutch unit and transmits the rotation of the cord pulley to the clutch unit, and the clutch unit is connected to the cord pulley. The cord pulley and the one-way clutch device can engage with each other in the rotational direction of the cord pulley, and a space is provided between the cord pulley and the one-way clutch device in the pull-out direction in which the operating cord is pulled out, which allows the cord pulley to rotate freely relative to the one-way clutch device when the operating cord is operated, and a suppression mechanism is provided that acts on the one-way clutch device to suppress rotation of the one-way clutch device in the winding direction when the winding rotation of the cord pulley that winds up the operating cord is completed.

According to the present invention, the shielding material can be lowered reliably even if it is folded up.

1 is a front view of a solar shading device according to a first embodiment. FIG. FIG. 2 is a side view of the solar shading device shown in FIG. 1 . 2 is a perspective view of an operating device in the solar shading device according to the first embodiment. FIG. 2 is an exploded perspective view of an operating device in the solar shading device according to the first embodiment. FIG. FIG. FIG. 4 is a perspective view of the cord pulley as viewed from the right side. FIG. 2 is a perspective view of the cord pulley as viewed from the left side. FIG. 4 is a side view of the cord pulley as viewed from the right side. FIG. 2 is a diagram showing the operating device with the cover removed. FIG. 2 is a perspective view of the one-way clutch device as viewed from the right side. FIG. 2 is a perspective view of a housing of the one-way clutch device as viewed from the left side. FIG. 2 is a perspective view of the one-way clutch device as viewed from the left side. 3A to 3C are multiple cross-sectional views of the operating device according to the first embodiment, taken along an axis intersecting at different positions. 2A to 2C are multiple cross-sectional views of the operating device according to the first embodiment taken along an axis line. FIG. 2 is an exploded perspective view of a clutch unit of the operating device. FIG. 4 is a development view for explaining the configuration of the cam drum of the clutch unit, showing the clutch unit in a released state (non-transmitting state). This shows the engaged state of the clutch unit. This shows the clutch unit stopped rotating (clutch spring slipping state). This shows a held state in which the position of the front curtain is maintained. 11A and 11B are diagrams for explaining the lowering operation of the front curtain in the solar radiation shading device according to the comparative example. 1A and 1B are diagrams showing the relationship between the cord pulley and the housing of the one-way clutch device when the operating cord is operated, where (a) is a diagram showing the state before the operating cord is operated, (b) is a diagram showing the state when the operating cord is operated, and (c) is a diagram showing the state when the operating cord is wound around the cord pulley. 13A is a diagram showing the state of the operating cord and the state of the clutch ball in the cam drum during the clutch release operation, and FIG. 13B is a diagram showing the state of the operating cord and the state of the clutch ball in the cam groove in FIG. 13B, and FIG. 13B is a schematic diagram showing the state of the operating cord and the state of the clutch ball in the cam groove in FIG. 13C. FIG. 11 is a perspective view of a cord pulley according to a second embodiment, as viewed from the left side L. 13 is a plan view of the cord pulley in the second embodiment as viewed from the left side L. FIG. 11 is a perspective view of a housing of a one-way clutch device according to a second embodiment, as viewed from the right side. FIG. 11A and 11B are diagrams for explaining the operation of the restraint mechanism in embodiment 2, in which (a) is a diagram showing the state before the operation cord is pulled out, (b) is a diagram showing the state during the operation cord is being pulled out, (c) is a diagram showing the state during rewinding of the operation cord, and (d) is a diagram showing the state after rewinding of the operation cord has been completed. 13A and 13B are diagrams for explaining the configuration of a suppression mechanism in an operating device according to a third embodiment. FIG. 13 is a perspective view of a cord pulley according to a fourth embodiment, as viewed from the left side. FIG. 13 is a plan view of the cord pulley according to the fourth embodiment, as viewed from the left side. FIG. 11 is a perspective view of a housing of a one-way clutch device according to a fourth embodiment, as viewed from the right side 13 is a plan view of a housing of a one-way clutch device according to a fourth embodiment, as viewed from the right side. FIG. 11A and 11B are diagrams for explaining the operation of the restraint mechanism in embodiment 4, in which (a) is a diagram showing the state before the operation cord is pulled out, (b) is a diagram showing the state during the operation cord is being pulled out, (c) is a diagram showing the state during rewinding of the operation cord, and (d) is a diagram showing the state after rewinding of the operation cord has been completed.

1. Overview of the embodiment First, an overview of a representative embodiment of the present invention will be described. Note that in the following description, as an example, reference numerals in the drawings corresponding to components of the invention are given in parentheses.

[1] The operating device (1) for the solar shading device (100) is used to operate the shading material (102, 103) supported so as to be freely raised and lowered on the lifting shaft (112b, 113b) rotatably supported in the head rail (101) of the solar shading device (100), and one end of the operating cord (21, 31) used for the operation of raising and lowering the shading material (102, 103) is fixed to the operating cord (21, 31) so that the operating cord (21, 31) can be wound up and pulled out. a cord pulley (20, 30); a clutch unit (6, 7) that regulates the rotation of the lifting shaft (112b, 113b) in a direction in which the shielding material (102, 103) descends due to its own weight; and a rotatable one-way clutch device (40, 50) that is provided between the cord pulley (20, 30) and the clutch unit (6, 7) and transmits the rotation of the cord pulley (20, 30) to the clutch unit (6, 7). The cord pulley (20, 30) and the one-way clutch device (40, 50) can engage with each other in the rotational direction of the cord pulley (20, 30), and a space (SP) is provided between the cord pulley (20, 30) and the one-way clutch device (40, 50) in the pull-out direction (+R1, +R2) in which the operating cord (21, 31) is pulled out, which allows the cord pulley (20, 30) to rotate freely relative to the one-way clutch device (40, 50) when the operating cord (21, 31) is operated, and a suppression mechanism is provided that acts on the one-way clutch device (40, 50) to suppress rotation of the one-way clutch device (40, 50) in the winding direction (-R1, -R2) when the winding rotation of the cord pulley (20, 30) that winds the operating cord (21, 31) is completed.

[2] In the above-mentioned operating device (1), the suppression mechanism includes a first magnet (226, 326) provided on the cord pulley (20, 30) and a second magnet (418, 518) provided on the one-way clutch device (40, 50), and the first magnet (226, 326) and the second magnet (418, 518) are arranged to attract each other when the cord pulley (20, 30) and the one-way clutch device (40, 50) are engaged during winding rotation.

[3] In the above-mentioned operating device (1), the suppression mechanism includes an elastic member (230, 330) provided on the cord pulley (20, 30) around the rotation axis (x1, x2) of the cord pulley (20, 30), and an abutment portion (420) provided on the one-way clutch device (40, 50) that abuts against the elastic member (230, 330), and the elastic member (230, 330) is configured to bias the abutment portion (420) in the pull-out direction (+R1, +R2) at the end of the winding rotation of the cord pulley (20, 30) that winds up the operating cord (21, 31).

[4] In the above-mentioned operating device (1), the suppression mechanism includes a band-shaped member (125, 126) that tangentially contacts the peripheral surface of the one-way clutch device (40, 50).

[5] In the above-mentioned operating device (1), the suppression mechanism includes a first recess (233, 333) formed as a recess on the inner peripheral surface of the cord pulley (20, 30), a second recess (421, 521) formed as a recess on the outer peripheral surface of the one-way clutch device (40, 50), and a rolling body (423) that is free to roll in the circumferential direction when partially accommodated in the second recess (421, 521), and when the winding rotation is completed, the first recess (233, 333) and the second recess (421, 521) face each other, and the rolling body (423) is held in the first recess (233, 333) and the second recess (421, 521).

[6] In the above-mentioned operating device (1), the cord pulley (20, 30) has a through hole (224) that penetrates the periphery in a direction along the rotation axis (x1, x2) and a groove portion (227) that extends along the inner periphery, and one end of the operating cord (21, 31) is guided to the inside of the cord pulley (20, 30) through the through hole (224) and is held in the groove portion (227).

[7] The solar shading device (100) comprises a head rail (101), shading materials (102, 103) supported so as to be freely raised and lowered on lifting shafts (112b, 113b) rotatably supported within the head rail (101) along the longitudinal direction (LR) of the head rail (101), and an operating device (1) attached to the head rail (101) and used for operating the raising and lowering of the shading materials (102, 103). The operating device (1) is a cord pulley (20, 30) to which one end of an operation cord (21, 31) used for lifting and lowering the shielding material (102, 103) is fixed and capable of winding and pulling out the operation cord (21, 31); a clutch unit (6, 7) for restricting the rotation of the lifting shaft (112b, 113b) in the direction in which the shielding material (102, 103) descends due to its own weight; and a clutch unit (6, 7) provided between the cord pulley (20, 30) and the clutch unit (6, 7) for restricting the rotation of the cord pulley (20, 30) by the clutch unit (6, 7). The cord pulley (20, 30) and the one-way clutch device (40, 50) can be engaged in the rotational direction of the cord pulley (20, 30), and a space (SP) is provided between the cord pulley (20, 30) and the one-way clutch device (40, 50) in the pull-out direction (+R1, +R2) in which the operating cord (21, 31) is pulled out, allowing the cord pulley (20, 30) to rotate freely relative to the one-way clutch device (40, 50) when the operating cord (21, 31) is operated, and a suppression mechanism is provided that acts on the one-way clutch device (40, 50) to suppress rotation of the one-way clutch device (40, 50) in the winding direction (-R1, -R2) at the end of the winding rotation of the cord pulley (20, 30) that winds the operating cord (21, 31).

Below, an embodiment of the present invention will be described with reference to the drawings.

The solar shading device according to the present invention is a known solar shading device and is not limited to a specific solar shading device, and can be applied to shading materials such as roman shades, vertical blinds, aluminum blinds, pleated screens, shutters, etc. For example, the operating device 1 according to the present invention is applied to the solar shading device 100 shown in Figures 1 and 2.

<First embodiment>
Fig. 1 is a front view of a solar shading device 100 according to embodiment 1. Fig. 2 is a side view of the solar shading device 100 shown in Fig. 1. The solar shading device 100 is a cover that is fixed to, for example, a window frame or a wall around a window, and that allows the outside to be seen from inside the room, prevents the inside of the room from being seen from outside, allows light and wind to enter the room, and prevents light and wind from entering the room.

For ease of explanation, the direction in which the head rail 101 of the solar shading device 100 extends is referred to as the longitudinal direction (left-right direction) LR. In addition, in the longitudinal direction LR, for example, the left side in FIG. 1 as viewed from the indoor side is referred to as the "left side L" and the right side is referred to as the "right side R". Furthermore, the direction in which the shielding materials (hereinafter also referred to as the "front curtain" and "rear curtain") 102, 103 hang down or rise up and down with respect to the head rail 101 is referred to as the up-down direction (hanging direction, rising and falling direction) UD. In the up-down direction UD, the side of the head rail 101 is referred to as the "upper side U" and the side away from the head rail 101 downward is referred to as the "lower side D". Furthermore, the direction intersecting the longitudinal direction LR and the up-down direction UD is referred to as the short side direction (front-to-back direction) FB. In addition, in the short side direction FB, for example, the indoor side is referred to as the "front side F" and the outdoor side is referred to as the "rear side B".

The solar shading device 100 according to the first embodiment includes a box-shaped head rail 101, two shading materials 102 and 103, lifting and lowering cords 104 and 105, and an operating device 1. The configuration of the solar shading device 100 will be described in detail below.

The head rail 101 is formed in a long box shape with an internal storage space. The head rail 101 has a bracket 106. The head rail 101 is attached to an attachment target, such as a window frame or a wall around a window, via the bracket 106. An operating device 1, which will be described later, is attached to one end of the head rail 101 in the longitudinal direction LR (the right side R in FIG. 1). Note that the head rail 101 is not limited to a box shape, and the cross section along the short side direction FB may be an I-shape. The operating device 1 can also be attached inside the head rail 101.

Three winding drums 112a, 113a are provided inside the head rail 101, arranged above and below each other in the vertical direction UD. The winding drum 112a is located below the winding drum 113a on the lower side D.

The winding drums 112a are arranged side by side along the longitudinal direction LR of the head rail 101. The winding drums 112a are connected to each other by lifting shafts 112b. The lifting shafts 112b are rotatably supported on the head rail 101.

The winding drums 113a are arranged side by side along the longitudinal direction LR of the head rail 101. The winding drums 113a are connected to each other by lifting shafts 113b. The lifting shafts 113b are rotatably supported on the head rail 101.

In addition, the number of winding drums 112a, 113a in the solar shading device 100 is not particularly limited.

The front curtain 102 and rear curtain 103 are supported so that they can be raised and lowered relative to the head rail 101 along the longitudinal direction LR of the head rail 101. The front curtain 102 is located on the indoor side F in the short direction FB relative to the rear curtain 103. The rear curtain 103 is located on the outdoor side B in the short direction FB relative to the front curtain 102.

The front curtain 102 is wound up relative to the head rail 101 via three lifting cords 104. One end of each lifting cord 104 is fixed to the respective winding drum 112a. The other end of each lifting cord 104 is attached to the lower end of the front curtain 102 in the up-down direction UD via a cord adjuster 141 on the side of the front curtain 102 facing the rear curtain 103.

The front curtain 102 rises when each lifting cord 104 is wound around each winding drum 112a by the rotational force transmitted from the operating device 1 via the lifting shaft 112b, and falls when each cord is unwound.

The rear curtain 103 is wound up relative to the head rail 101 via three lifting cords 105. One end of each lifting cord 105 is fixed to the respective winding drum 113a. The other end of each lifting cord 105 is attached to the lower end of the rear curtain 103 in the up-down direction UD via a cord adjuster 151 on the side of the rear curtain 103 opposite the front curtain 102 (rear side B).

The rear curtain 103 rises when each lifting cord 105 is wound around each winding drum 113a by the rotational force transmitted from the operating device 1 via the lifting shaft 113b, and falls when the cord is unwound. Note that in FIG. 1, each lifting cord 105 cannot be seen because it overlaps with the lifting cord 104 of the front curtain 102 in the front-to-rear direction FB.

In the first embodiment, the lifting and lowering cords 104 and 105 hang down from three points, but they may hang down from one, two, or four or more points depending on the length of the solar shading device 100, the number of winding drums 112a and 113a installed, etc.

Figure 3A is a perspective view of the operating device 1 in the solar shading device 100 according to embodiment 1. Figure 3B is an exploded perspective view of the operating device 1 in the solar shading device 100 according to embodiment 1. Note that operation cords 21 and 31 are not shown in Figure 3B.

In the solar shading device 100, the operating device 1 is attached, for example, to the end of the right side R of the head rail 101. The operating device 1 raises and lowers the front curtain 102 and the rear curtain 103 individually in response to the operation of the operating cords 21, 31 hanging down from the operating device 1. The operating device 1 has a container 10, two pulley operating drive units 2, 3, and two clutch units 6, 7.

In the first embodiment, the rotation direction +R1 when pulling out the operating cord 21 in the pulley operation drive unit 2 and the clutch unit 6 (hereinafter also referred to as the "pulling out direction") is counterclockwise, and the rotation direction -R1 when winding up the operating cord 21 in the pulley operation drive unit 2 and the clutch unit 6 (hereinafter also referred to as the "winding direction") is clockwise. Also, in the first embodiment, the rotation direction +R2 when pulling out the operating cord 31 in the pulley operation drive unit 3 and the clutch unit 7 (hereinafter also referred to as the "pulling out direction") is clockwise, and the rotation direction -R2 when winding up the operating cord 31 in the pulley operation drive unit 3 and the clutch unit 7 (hereinafter also referred to as the "winding direction") is counterclockwise.

The container 10 is exposed, for example, from the end of the right side R of the head rail 101. The container 10 has a case 11 and a cover 12. The case 11 and the cover 12 are formed, for example, in a box shape from resin or the like, and house the pulley operation drive units 2 and 3 inside. Figure 4 is an exploded perspective view of the container 10.

The case 11 is surrounded by a peripheral wall 111 in the front-to-rear direction FB and the up-down direction UD. The case 11 is closed on the head rail 101 side in the longitudinal direction LR by a side wall 112, and the side opposite the head rail 101 (left side L) is open and closed by a cover 12.

The storage space S that houses the pulley operation drive units 2, 3 is defined by a peripheral wall portion 111 and a side wall portion 112. The lower side D portion of the peripheral wall portion 111 in the up-down UD direction has two storage portions 113, 114. The storage portions 113, 114 are spaced apart at a predetermined distance in the front-to-rear direction FB and are recessed toward the side wall portion 112 along the longitudinal direction LR.

Cord guide members 115, 116 are removably accommodated in the storage sections 113, 114, respectively. When attached to the storage sections 113, 114, the cord guide members 115, 116 have holes penetrating in the up-down and down-right directions, and guide the operating cords 21, 31, one end of which is fixed to the cord pulleys 20, 30, respectively, into and out of the case 11.

The side wall portion 112 has two storage holes 117, 118. The storage holes 117, 118 are formed side by side in the up-down UD direction. In the storage space S, a pulley operation drive unit 2 is provided at a position corresponding to the storage hole 117 of the side wall portion 112, and a pulley operation drive unit 3 is provided at a position corresponding to the storage hole 118 of the side wall portion 112.

On the surface of the side wall portion 112 opposite the storage space S, the clutch unit 6 is attached at a position corresponding to the storage hole 117, and the clutch unit 7 is attached at a position corresponding to the storage hole 118.

Through the accommodation hole 117, the pulley operation drive unit 2 and the clutch unit 6 are connected to each other on the same rotation axis (axis x1), and the rotational force from the pulley operation drive unit 2 is transmitted to the clutch unit 6. Also, through the accommodation hole 118, the pulley operation drive unit 3 and the clutch unit 7 are connected to each other on the same rotation axis (axis x2), and the rotational force from the pulley operation drive unit 3 is transmitted to the clutch unit 7.

Pulley operation drive unit 2 is located below pulley operation drive unit 3 in the vertical direction UD. Pulley operation drive unit 3 is located above pulley operation drive unit 2 in the vertical direction UD. Pulley operation drive units 2 and 3 rotate in different directions when the front curtain 102 and rear curtain 103 are raised and lowered by pulling operation cords 21 and 31.

The pulley operation drive unit 2 is provided for raising and lowering the front curtain 102. The pulley operation drive unit 3 is provided for raising and lowering the rear curtain 103. The pulley operation drive units 2 and 3 each have a cord pulley 20, 30 and a one-way clutch device 40, 50.

The cord pulley 20 and one-way clutch device 40 of the pulley operation drive unit 2 are engaged with each other and aligned along the longitudinal direction LR. The cord pulley 20 and one-way clutch device 40 are arranged so that they can rotate together around the same axis x1. The cord pulley 30 and one-way clutch device 50 of the pulley operation drive unit 3 are engaged with each other and aligned along the longitudinal direction LR. The cord pulley 30 and one-way clutch device 50 are arranged so that they can rotate together around the same axis x2.

The cord pulleys 20, 30 are supported rotatably between the inner plates 120, 130. The inner plates 120, 130 face each other on the axes x1, x2 when housed in the container 10. The inner plate 120 is located on the side of the one-way clutch devices 40, 50 relative to the inner plate 130.

The inner plate 120 has two accommodation openings 121, 122 that are arranged in the up-down direction UD and have a circular shape in a plan view (see FIG. 3B). The accommodation openings 121, 122 are arranged next to each other in the up-down direction UD. The accommodation openings 121, 122 support the cord pulleys 20, 30 so that they can rotate. The accommodation opening 121 is located on the lower side D of the accommodation opening 122 in the up-down direction UD.

The inner diameter of the accommodation openings 121, 122 is slightly larger than the outer diameter of the cord pulleys 20, 30 described below. The edge of the accommodation openings 121, 122 on the side of the one-way clutch device 40, 50 is convex toward the axis x1. The inner diameter of the accommodation openings 121, 122 at this edge is smaller than the outer diameter of the cord pulleys 20, 30, so that the cord pulleys 20, 30 are prevented from slipping out of the accommodation openings 121, 122 to the side of the one-way clutch device 40, 50 along the axis x1.

One end of the operating cord 21 is fixed to the cord pulley 20, and one end of the operating cord 31 is fixed to the cord pulley 30. The operating cords 21 and 31 are wound around the outer circumferential surfaces of the cord pulleys 20 and 30, respectively.

The operating cords 21, 31 are fitted with restricting members 211, 311 that restrict the operating cords 21, 31 from being wound into the case 11. The restricting members 211, 311 are attached to the ends of the operating cords 21, 31 opposite the ends fixed to the cord pulleys 20, 30. The winding rotation of the operating cords 21, 31 around the cord pulleys 20, 30 caused by the biasing force of the spiral springs 24, 34 is stopped when the restricting members 211, 311 come into contact with the lower D portion (cord guide members 115, 116) of the peripheral wall portion 111 of the case 11.

The operating cord 21, 31 includes two parts: a winding part and an operating part. One end of the winding part is fixed to the cord pulley 20, 30, and the other end is fixed to the regulating member 211, 311. One end of the operating part is fixed to the regulating member 211, 311, and the other end is fixed to the operating grip 163, 173.

Since the cord pulleys 20, 30 have the same configuration, the configurations of the cord pulleys 20, 30 will be described below using the same figure. Figure 5A is a perspective view of the cord pulleys 20; 30 as seen from the right side R. Figure 5B is a perspective view of the cord pulleys 20; 30 as seen from the left side L. Figure 5C is a plan view of the cord pulleys 20; 30 as seen from the left side L.

The cord pulley 20; 30 is a cylindrical member that is open on the one-way clutch device 40; 50 side and closed on the inner plate 130 side when housed in the inner plate 120. The cord pulley 20; 30 has a cylindrical tube portion 22; 32 and a closed portion 23; 33.

The cylindrical portion 22; 32 has an enlarged diameter portion 221; 321 and a reduced diameter portion 222; 322. The outer diameter of the enlarged diameter portion 221; 321 is formed to be larger than the reduced diameter portion 222; 322. The cylindrical portion 22; 32 is rotatably accommodated in the accommodation opening 121; 122 of the inner plate 120 at the enlarged diameter portion 221; 321.

The reduced diameter portion 222; 322 extends from the expanded diameter portion 221; 321 over a predetermined range along the axis x1; x2. A closed portion 23; 33 is provided on the opposite side of the expanded diameter portion 221; 321 across the reduced diameter portion 222; 322, and the operating cord 21; 31 is wound around the outer circumferential surface of the reduced diameter portion 222; 322 between the expanded diameter portion 221; 321 and the closed portion 23; 33.

The cylindrical portion 22; 32 has a hole (through hole) 224; 324 that extends from the outside to the inside of the cylindrical portion 22; 32 along the axis x1; x2 on the surface of the enlarged diameter portion 221; 321 facing the closed portion 23; 33. One end of the operating cord 21; 31 is guided to the inner peripheral surface of the cylindrical portion 22; 32 through the hole 224; 324.

The cylindrical portion 22; 32 has two recesses 225; 325 extending along the axis x1; x2 on the inner surface facing the opposite side to the closing portion 23; 33 in the direction along the axis x1; x2. The recesses 225; 325 are formed on the side radially opposite the hole 224; 324. One of the recesses 225; 325 houses a magnet 226; 326. This magnet 226; 326 attracts magnets 418; 518 of the one-way clutch device 40; 50 described later by magnetic force. In the cord pulley 30, a magnet is housed in the recess 325 on the side of the cord pulley 20 that does not house a magnet.

The cylindrical portion 22;32 has a groove portion 227;327 extending circumferentially from the hole 224;324 on the inner peripheral surface side of the enlarged diameter portion 221;321. A knot is formed at one end of the operating cord 21;31 guided from the outer peripheral surface side to the inner peripheral surface side of the cord pulley 20;30 through the hole 224;324. The portion of the operating cord 21;31 remaining from the knot to the tip side is accommodated in the groove portion 227;327. This makes it possible to prevent the excess portion of the operating cord 21;31 from interfering with other components when, for example, the cord pulley 20;30 rotates (see FIG. 5C).

The cylindrical portion 22; 32 has two protrusions 228; 328 as engagement portions on the inner peripheral surface side of the reduced diameter portion 222; 322. The two protrusions 228; 328 are provided at positions facing each other in the radial direction. The protrusions 228; 328 extend from the inner peripheral surface along the axis x1; x2 and protrude toward the axis x1; x2. The cord pulley 20; 30 engages with the protrusions 416; 516 of the one-way clutch device 40; 50 described later in the rotational direction at the protrusions 228; 328. The one-way clutch device 40; 50 is inserted into the cylindrical portion 22; 32.

The closing portion 23; 33 has a cylindrical rod-shaped portion 231; 331. The rod-shaped portion 231; 331 extends along the axis x1; x2 on the opposite side to the tube portion 22; 32. The rod-shaped portion 231; 331 engages with a spiral spring 24; 34 housed in an inner plate 130, which will be described later. A slit 232; 332 is formed at the tip of the rod-shaped portion 231; 331. The slit 232; 332 extends in the radial direction of the rod-shaped portion 231; 331 and in the direction of the axis x1; x2.

The inner plate 130 has two storage recesses 131, 132 arranged vertically in the up-down direction UD. The storage recesses 131, 132 are formed as recesses on the surface opposite the cord pulleys 20, 30 when the cord pulleys 20, 30 are stored in the inner plates 120, 130.

Figure 6 is a diagram showing the operating device 1 with the cover 12 removed. The storage recess 131 is located on the lower side D of the storage recess 132 in the up-down UD direction, and the storage recess 132 is located on the upper side U of the storage recess 131 in the up-down UD direction. The storage recess 131 stores the spiral spring 24, and the storage recess 132 stores the spiral spring 34.

The power spring 24 is engaged with a cord pulley 20 that can rotate to wind and pull out the operating cord 21. The power spring 24 urges the cord pulley 20 in a winding direction -R1 so as to wind the operating cord 21 around the cord pulley 20. The power spring 34 is engaged with a cord pulley 30 that can rotate to wind and pull out the operating cord 31. The power spring 34 urges the cord pulley 30 in a winding direction -R2 so as to wind the operating cord 31 around the cord pulley 30.

The spiral spring 24 has two engagement portions 241, 242. The engagement portions 241, 242 are provided at each end of the spiral spring 24 in the circumferential direction. The engagement portion 241 is formed at the outer end of the spiral spring 24 in the radial direction. The engagement portion 241 is folded back outward along the pull-out direction +R1. The engagement portion 242 is formed at the inner end of the spiral spring 24 in the radial direction. The engagement portion 242 is folded back inward in the pull-out direction +R1.

The spiral spring 34 has two engagement portions 341, 342. The engagement portions 341, 342 are provided at each end of the spiral spring 34 in the circumferential direction. The engagement portion 341 is formed at the outer end of the spiral spring 34 in the radial direction. The engagement portion 341 is folded back outward along the pull-out direction +R2. The engagement portion 342 is formed at the inner end of the spiral spring 34 in the radial direction. The engagement portion 342 is folded back inward in the pull-out direction +R2.

The storage recesses 131, 132 are defined by walls 135, 136 that protrude from the inner plate 130 toward the cover 12. Slits 137, 138 are formed in the walls 135, 136, respectively. The slit 137 of the wall 135 is formed in the wall 135 on the lower side D of the storage recess 131 in the vertical direction UD. The slit 138 of the wall 136 is formed in the wall 136 on the upper side U of the storage recess 132 in the vertical direction UD.

The engaging portions 241, 341 of the spiral springs 24, 34 are engaged with the walls 135, 136 at the slits 137, 138 of the storage recesses 131, 132, respectively. The engaging portion 242 of the spiral spring 24 is engaged with the cord pulley 20 at the slit 232 in the rod-shaped portion 231 of the cord pulley 20. The engaging portion 342 of the spiral spring 34 is engaged with the cord pulley 30 at the slit 332 in the rod-shaped portion 331 of the cord pulley 30.

The one-way clutch devices 40, 50 are provided between the cord pulleys 20, 30 and the clutch units 6, 7 along the axes x1, x2, respectively, and transmit rotational force to the clutch units 6, 7. The one-way clutch devices 40, 50 are provided on the clutch unit 6, 7 side of the cord pulleys 20, 30 in the longitudinal direction LR (see FIG. 3B). The one-way clutch devices 40, 50 are inserted into the cord pulleys 20, 30, respectively, and can rotate integrally with the cord pulleys 20, 30.

The one-way clutch device 40 transmits the rotational force only in the specified rotational direction +R1 to the downstream clutch unit 6 using the output transmitted from the cord pulley 20. The one-way clutch device 50 transmits the rotational force only in the specified rotational direction +R2 to the downstream clutch unit 7 using the output transmitted from the cord pulley 30.

The one-way clutch device 40, 50 has a housing 41, 51 and a one-way clutch 46, 56 (see FIG. 3B). Note that the housings 41, 51 have the same configuration, so the following description will be given of the configuration of the housings 41, 51 in the same figure.

Figure 7A is a perspective view of the one-way clutch device 40;50 as viewed from the right side R. Figure 7B is a perspective view of the housing 41;51 of the one-way clutch device 40;50 as viewed from the left side L. Figure 7C is a perspective view of the one-way clutch device 40;50 as viewed from the left side L. The housing 41;51 is formed in a cylindrical shape with one end that is inserted into the cord pulley 20;30 closed. The housing 41;51 engages with the inner peripheral surface of the cord pulley 20;30 at its outer circumferential surface. The housing 41;51 is formed as an insert member that is inserted into the cord pulley 20;30. The housing 41;51 has three stepped portions 411-414; 511-514 with different outer diameters.

In the direction of insertion into the cord pulley 20;30, the steps 411;511, 412;512, 413;513, and 414;514 are provided in this order. The outer diameter of the housing 41;51 increases in the order of the steps 411;511, 412;512, 413;513, and 414;514.

The step portion 412; 512 has two protrusions 416; 516 on its outer circumferential surface as engagement portions. The two protrusions 416; 516 are provided at positions facing each other in the radial direction. The protrusions 416; 516 extend along the axis x1; x2 on the outer circumferential surface of the step portion 412; 512 and protrude in a direction away from the axis x1; x2. The outer diameter of the protrusions 416; 516 is approximately the same as the outer diameter of the step portion 413; 513. The one-way clutch device 40; 50 engages with the circumferential surface of the protrusions 228; 328 of the code pulley 20; 30 in the rotational directions ±R1; ±R2 on the surface of the protrusions 416; 516 facing in the circumferential direction.

The step portion 414; 514 has a recess 417; 517 extending along the axis x1; x2. The recess 417; 517 opens toward the other step portions 411, 412, 413; 511, 512, 513 along the axis x1; x2 and in the radial direction. The recess 417; 517 is formed between the protrusions 416; 516 in the circumferential direction. The recess 417; 517 houses a magnet 418; 518.

When the cord pulley 20; 30 and the one-way clutch device 40; 50 are engaged in the winding direction -R1; -R2, the end face exposed toward the axis x1; x2 of the magnet 226; 326 of the cord pulley 20; 30 can come into contact with the end face exposed toward the axis x1; x2 of the magnet 418; 518 of the one-way clutch device 40; 50. In other words, the magnetic poles of the magnets 226, 418; 326, 518 on the surfaces facing each other are different. When the cord pulley 20;30 rotates in the winding direction -R1;-R2 in which the operating cord 21;31 is wound, the magnets 226;326 and 418;518 face each other and attract each other by magnetic force when the protrusions 228;328 of the cord pulley 20;30 and the protrusions 416;516 of the one-way clutch device 40;50 are engaged in the circumferential direction.

The housing 41; 51 has three protrusions 419; 519 on its inner circumferential surface. The protrusions 419; 519 are provided at equal intervals on the inner circumferential surfaces of the step portions 413; 513, 414; 514. The protrusions 419; 519 extend along the axis x1; x2 on the inner circumferential surface and protrude in a semicircular shape from the inner circumferential surface toward the axis x1; x2. The protrusions 419; 519 engage with the one-way clutches 46; 56 described below.

The one-way clutch 46; 56 engages with the inner peripheral surface of the housing 41; 51 at its outer peripheral surface. The one-way clutch 46; 56 is formed in a disk shape. The one-way clutch 46; 56 is housed in the housing 41; 51. The one-way clutch 46; 56 has a hole 461; 561 and three recesses 462; 562 on its outer peripheral surface. A drive shaft 611; 711 of the clutch unit 6; 7, which will be described later, is inserted into the hole 461; 561 of the one-way clutch 46; 56 so as not to rotate relative to the housing.

The recesses 462 extend along the axis x1 on the outer circumferential surface and are provided at equal intervals in the circumferential direction. The recesses 462 are semicircular recesses from the outer circumferential surface toward the axis x1. The one-way clutch 46 engages with the protrusion 419 of the housing 41 at the recesses 462 so as not to rotate relative to the housing 41.

When the one-way clutch 46; 56 is inserted into the housing 41; 51, the recessed portion 462; 562 of the one-way clutch 46; 56 engages with the protruding portion 419; 519 of the housing 41; 51 in the circumferential direction. This prevents the one-way clutch 46; 56 from rotating relative to the housing 41; 51. The one-way clutch 46; 56 transmits only the rotation in the pull-out direction +R1; +R2 of the operating cord 21; 31 to the lifting shaft 112b; 113b via the clutch unit 6; 7. The one-way clutch 46; 56 is press-fitted into the housing 41; 51, so that it can rotate integrally with the housing 41; 51.

Figure 8 shows multiple cross-sectional views of the operating device 1 according to embodiment 1, taken at different positions along the axes x1 and x2. Figure 9 shows multiple cross-sectional views of the operating device 1 according to embodiment 1, taken along the axes x1 and x2. When the one-way clutch devices 40 and 50 are inserted into the cord pulleys 20 and 30, respectively, and in a state in which rotation is not being transmitted, the convex portions 228 and 328 of the cord pulleys 20 and 30 are spaced apart from the convex portions 416 and 516 of the one-way clutch devices 40 and 50 in the pull-out directions +R1 and +R2, but are engaged in the winding directions -R1 and -R2. Specifically, when the restricting members 211, 311 are in contact with the case 11, a space SP is provided between the cord pulleys 20, 30 and the one-way clutch devices 40, 50 in the pull-out directions +R1, +R2, allowing the cord pulley 20 to rotate freely relative to the one-way clutch devices 40, 50 when switching between the transmission state and the non-transmission state.

When the operating cord 21, 311 is pulled out with the restricting member 211, 311 in contact with the case 11, in the winding directions -R1, -R2, the convex portions 228, 328 of the cord pulleys 20, 30 and the convex portions 416, 516 of the one-way clutch devices 40, 50 remain engaged with each other through the magnets 226, 418, 326, 518.

By rotating in the pull-out directions +R1 and +R2, the magnets 226, 418, 326, and 518 are separated from each other, and the protrusions 228 and 328 move through the space SP and come into contact with the other protrusions 416 and 516 of the one-way clutch devices 40 and 50. This causes the one-way clutch devices 40 and 50 to rotate in the pull-out directions +R1 and +R2.

Figure 10 is an exploded perspective view of the clutch units 6 and 7 of the operating device 1. The clutch units 6 and 7 are connected to the case 11 of the pulley operation drive units 2 and 3 at the side wall portion 112 on the side opposite the cover 12.

The clutch units 6, 7 can be switched between a transmission state (when performing a lifting operation) in which the rotational force of the cord pulleys 20, 30 is transmitted to the downstream lifting shafts 112b, 113b, and a non-transmission state (when not performing a lifting operation) in which the rotational force is not transmitted to the downstream lifting shafts 112b, 113b. In the non-transmission state of the clutch units 6, 7, the regulating members 211, 311 are in contact with the case 11 of the operating device 1.

The clutch units 6, 7 are connected to the one-way clutch devices 40, 50 of the pulley operation drive units 2, 3, respectively. The clutch units 6, 7 have a transmission side rotating part 61, 71, a transmission side rotating part 62, 72, a cam drum 63, 73, a clutch case 64, 74, and a clutch ball 65, 75.

The transmission side rotating parts 61, 71 are connected to the pulley operation drive units 2, 3, respectively. The transmission side rotating parts 61, 71 have a drive shaft 611, 711, a clutch spring cylinder 612, 712, a clutch spring 613, 713, and a transmission side meshing disk 614, 714.

The drive shafts 611, 711 are connected to the one-way clutch devices 40, 50 of the pulley operation drive units 2, 3. The drive shaft 611 rotates in a first rotation direction (e.g., counterclockwise as seen from the pulley operation drive unit 2 side) +R1 by pulling the operation cord 21 in one direction. The drive shaft 711 rotates in a second rotation direction (e.g., clockwise as seen from the pulley operation drive unit 3 side) +R2 by pulling the operation cord 31 in one direction.

The clutch spring cylinders 612, 712 are splined to the drive shafts 611, 711. The clutch spring cylinders 612, 712 rotate together with the drive shafts 611, 611 and can move relative to the drive shafts 611, 711 along the axes x1, x2.

A cylindrical clutch spring 613, 713 is wound around the outer circumferential surface of the clutch spring cylinder 612, 712. The clutch spring 613, 713 tightens the outer circumferential surface of the clutch spring cylinder 612, 712 by its elasticity in an unloaded state. Therefore, when the clutch spring cylinder 612, 712 rotates, the clutch spring 613, 713 rotates together with it. The transmission side meshing disk 614, 714 is provided at the end of the clutch spring cylinder 612, 712 on the opposite side of the axis x1, x2 from the pulley operation drive units 2, 3.

The drive shaft 611, 711 is inserted into the cam drum 63, 73 together with the clutch spring cylinder 612, 712 from the pulley operation drive unit 2, 3 side. The drive shaft 611, 711 is rotatably accommodated in the cam drum 63, 73. The cam drum 63, 73 has an engagement portion 63a, 73a. The engagement portion 63a, 73a is formed as a notch at the end of the cam drum 63, 73 of the pulley operation drive unit 2, 3. The clutch spring 613, 713 engages with the engagement portion 63a, 73a at the end opposite the transmission side rotating portion 61, 71.

The transmitted side rotating part 62, 72 has a driven shaft 621, 721 and a transmitted side meshing plate 622, 722. The transmitted side meshing plate 622, 722 is fixed to the end of the driven shaft 621, 721 of the drive shaft 611, 711. The drive shaft 611, 711 is rotatably accommodated in the clutch case 64, 74 and the cam drum 63, 73 at the end opposite the transmitted side meshing plate 622, 722. The driven shaft 621, 721 has an end opposite the pulley operation drive unit 2, 3 connected to the lift shaft 112b, 113b via a connector 623, 723, and rotates together with the lift shaft 112b, 113b.

The cam drums 63, 73 can rotate together with the clutch spring cylinders 612, 712 via the clutch springs 613, 713. In addition, the cam drums 63, 73 can rotate relative to the clutch spring cylinders 612, 712 when the clutch springs 613, 713 are loosened. Furthermore, the cam drums 63, 73 can move along the axes x1, x2 relative to the drive shafts 611, 711.

The clutch cases 64, 74 are fixed to the head rail 101. The cam drums 63, 73 are open toward the pulley operation drive units 2, 3 and are closed by cam covers 63b, 73b. The cam drums 63, 73 are rotatably supported within the clutch cases 64, 74 together with the drive shafts 611, 711 and the clutch spring cylinders 612, 712.

A cam groove 630, 730 is formed endlessly around the outer periphery of the cam drum 63, 73. A retaining groove (641 (see Figures 11A to 11D)) is formed on the inner surface of the clutch case 64, 74. The clutch balls 65, 75 are accommodated in the cam grooves 630, 730 and the retaining groove so that they can roll.

Figure 11A is an exploded view for explaining the configuration of the cam drum 63 of the clutch unit 6, showing the clutch unit 6 in the released state (non-transmitting state). Note that since the cam drums 63 and 73 have the same configuration, the configuration will be explained below using the cam drum 63 as an example. The cam groove 630 has, as its main groove, a winding groove 631 (see the path indicated by the dashed dotted line) that is formed endlessly and continuously in the circumferential direction. The winding groove 631 has an engagement portion 632, a stop portion 633, and a retaining portion 634.

The meshing portion 632 is curved toward the base end (the right side in the figure). When the clutch ball 65 moves relative to the cam drum 63 and is positioned here, the meshing portion 632 transmits the clutch unit 6.

The stop portion 633 is curved convexly in the opposite direction to the first rotation direction (pulling direction) +R1 of the cam drum 63. When the clutch ball 65 moves relative to this stop portion 633 and is positioned here, the rotation of the cam drum 63 in the first rotation direction +R1 is restricted.

The holding portion 634 is curved convexly in the first rotation direction +R1 of the cam drum 63. When the pulling of the operating cord 21 in one direction is stopped midway and released, the clutch ball 65 enters the holding portion 634, and the rotation of the cam drum 63 in the second rotation direction -R1 based on the descent of the front curtain 102 due to its own weight is restricted, and the front curtain 102 does not descend due to its own weight.

The cam groove 630 has a main release groove 635 and a sub-release groove 636. The main release groove 635 branches off from the winding groove 631 near the holding portion 634. The main release groove 635 has an inclined portion 637 toward the tip (0°) side, and a main release portion 638 at the end of the inclined portion. When the clutch ball 65 moves relative to this portion and reaches this position, the clutch unit 6 performs a transmission release operation, which will be described later.

The secondary release groove 636 branches off from the winding groove 631 near the meshing portion 632. The secondary release groove 636 has an inclined portion toward the base end (360°) and a secondary release portion 639 at the end of the inclined portion. When the clutch ball 65 moves relative to this portion and reaches this position, the clutch unit 6 releases the transmission.

When the cam drum 63 rotates in conjunction with the rotation of the drive shaft 611, the clutch ball 65 moves along the axis x1 within the retaining groove 641 within a range of length l along the axis x1 of the retaining groove 641, and also moves within the cam groove 630 relative to the cam drum 63.

The length l of the retaining groove 641 along the axis x1 is smaller than the distance d in the direction of the axis x1 between the retaining groove 641 and the release portion (main release portion 638, secondary release portion 639) located at the tip (0°) side of the meshing portion 632 located at the base end (360°) side of the cam groove 630 (d>l).

When the clutch ball 65 moves to one end and the other end of the retaining groove 641, it is constrained there and cannot move any further. This allows the cam drum 63 to move along the axis x1 relative to the constrained clutch ball 65. This allows the clutch ball 65 to move to the main release portion 638 and the meshing portion 632 and position itself there.

Next, the operation of the clutch unit 6 in the solar shading device 100 will be described using Figures 11A to 11D. Note that the operations of the clutch units 6 and 7 are the same, so the operation will be described below using the clutch unit 6 as an example. Figure 11B shows the engaged state of the clutch unit 6. Figure 11C shows the clutch unit 6 in a rotation-stopped state (clutch spring slipping state). Figure 11D shows a retained state in which the position of the front curtain 102 is retained.

First, we will explain the operation of the clutch unit 6 when raising the front curtain 102 in the solar shading device 100.

For example, before the start of operation, the clutch unit 6 is in a disengaged state. That is, before the start of operation, as shown in FIG. 11A, the transmission side meshing disk 614 of the transmission side rotating part 61 and the transmission side meshing disk 622 of the transmission side rotating part 62 are separated from each other and are in a disengaged state. From this state, the operation of pulling the operating cord 21 in one direction to lift the front curtain 102 (the winding up operation of winding up the lifting cord 104) will be described.

When the operating cord 21 is pulled in one direction, the cord pulley 20 rotates in the first rotation direction +R1. This rotation is transmitted to the drive shaft 611 of the transmission side rotation part 61 in the clutch unit 6 via the one-way clutch device 40. The drive shaft 611 rotates in the first rotation direction +R1. When the drive shaft 611 rotates in the first rotation direction +R1, the cam drum 63 rotates in the first rotation direction +R1 via one end of the clutch spring 613 wound around the clutch spring cylinder 612.

As shown in FIG. 11A, the clutch ball 65, which had stopped at the main release portion 638 of the main release groove 635, passes through the inclined portion 637 from the main release portion 638 of the main release groove 635 relative to the cam drum 63, moves from the branch portion B to the winding groove 631, and moves inside the holding groove 641 toward the base end (to the right in FIG. 11A).

When the clutch ball 65 reaches the base end of the retaining groove 641 (the right end in FIG. 11A), further movement along the axis x1 is restricted, and the cam drum 63 moves toward the tip side along the axis x1.

When the cam drum 63 moves toward the tip, the transmission side meshing plate 614 of the clutch spring cylinder 612, which moves along the axis x1 together with the cam drum 63, also moves toward the tip along the axis x1 and meshes with the transmitted side meshing plate 622 as shown in FIG. 11B. In this state, the clutch unit 6 is in a transmission state (meshed state).

The rotation of the drive shaft 611 in the first rotation direction +R1 is transmitted to the driven shaft 621 via the transmission side meshing plate 614 and the transmission side meshing plate 622, and the lifting shaft 112b starts to raise (wind up) the front curtain 102.

If the operating cord 21 is further operated, the cam drum 63 continues to rotate in the first rotation direction +R1, and the clutch ball 65 reaches the stop portion 633 as shown in FIG. 11C. Then, the clutch ball 65 is restrained at the stop portion 633, so the rotation of the cam drum 63 is restrained and stops.

In this state, if the operating cord 21 is continued to be operated and the drive shaft 611 and the clutch spring cylinder 612 are rotated in the first rotation direction +R1, one end of the clutch spring 613 is engaged with the cam drum 63, so that the rotation of the clutch spring 613 together with the cam drum 63 stops, and the clutch spring 613 loosens its grip on the clutch spring cylinder 612.

Therefore, when the operating cord 21 is operated to continue rotating the drive shaft 611, the cam drum 63 stops rotating, but the clutch spring cylinder 612 continues to rotate while slipping against the clutch spring 613, and the driven shaft 621 also continues to rotate.

When the front curtain 102 is raised (wound up) to the desired height and the operation is stopped by stopping pulling the operating cord 21 in one direction, the weight of the front curtain 102 causes the lifting shaft 112b to rotate in the opposite direction to the first rotation direction +R1, i.e., in the second rotation direction -R1. The cam drum 63 further rotates in the second rotation direction -R1 via the driven shaft 621, the driven side meshing plate 622, the transmitting side meshing plate 614, the clutch spring cylinder 612, and the clutch spring 613.

This rotation causes the clutch ball 65 to enter the holding portion 634 as shown in FIG. 11D, and the rotation of the cam drum 63 in the second rotation direction -R1 caused by the front curtain 102 descending under its own weight is stopped. This allows the front curtain 102 to be held at the desired height position.

Next, when lowering the front curtain 102 in the wound up state, the operating cord 21 is pulled slightly in the same direction as when it was raised, and in the clutch unit 6, the clutch ball 65 moves from the holding portion 634 shown in FIG. 11C along the winding groove 631 and moves relative to the cam drum 63 to a position where it branches off from the main release groove 635 at or beyond branching portion B.

When the operation cord 21 is no longer pulled in one direction and the operation is stopped, the weight of the front curtain 102 causes the lifting shaft 112b to rotate in the second rotation direction -R1, and the cam drum 63 rotates in the second rotation direction -R1 via the driven shaft 621, the transmitted side meshing plate 622, the transmitted side meshing plate 614, the clutch spring cylinder 612, and the clutch spring 613.

The clutch ball 65 enters the main release groove 635 from the branch B and attempts to move relative to the cam drum 63 from the inclined portion 637 to the main release portion 638, but the movement along the axis x1 is restricted at the tip of the retaining groove 641, so the cam drum 63 moves toward the base end.

As shown in FIG. 11A, the transmission side meshing plate 614 and the transmission side meshing plate 622 separate from each other and are no longer meshed. The transmission side meshing plate 622, the driven shaft 621, and the lift shaft 112b then become freely rotatable, and the front curtain 102 descends under its own weight and enters a closed state.

Since the transmission side meshing plate 614 and the transmission side meshing plate 622 are disengaged, the rotation of the driven shaft 621 in the second rotation direction -R1 caused by the descent of the front curtain 102 due to its own weight is not transmitted to the drive shaft 611, clutch spring cylinder 612, and cam drum 63.

As described above, in the ascent (winding up operation), the transmission side meshing disk 614 of the transmission side rotating part 61 and the transmitted side meshing disk 622 of the transmitted side rotating part 62 are disengaged (see FIG. 11A), and the operating cord 21 is pulled in one direction to bring them into the meshed state as shown in FIG. 11B, and the front curtain 102 is wound up.

When the operation of the operating cord 21 is immediately stopped after the meshed state is achieved in this way, the cam drum 63 rotates in the first rotation direction +R1 and, although not shown, passes the clutch ball 65 and meshing portion 632 before entering the secondary release groove 636 and stopping at the secondary release portion 639.

As a result, the engagement between the transmission side meshing disk 614 of the transmission side rotating part 61 and the transmitted side meshing disk 622 of the transmitted side rotating part 62 is released, just as when the clutch ball 65 enters the main release groove 635 (see Figure 11A).

According to the solar shading device 100 described above, for example, in a non-raising/lowering state where the operating cords 21, 31 are not being operated, the regulating members 211, 311 of the operating cords 21, 31 abut against the case 11. In this state, the convex portions 228, 328 of the cord pulleys 20, 30 are engaged with one of the convex portions 416, 516 of the one-way clutch device 40, 50 in the winding direction -R1, and are separated from the other convex portion 416, 516 of the one-way clutch device 40, 50 by a space SP in the unwinding direction +R1. Therefore, when the operating cords 21, 31 are operated, an idling angle is provided that allows the cord pulleys 20, 30 to idling by the space SP.

This allows the operating cords 21, 31 to be pulled out to a greater extent, allowing the clutch balls 65, 65 to reliably reach the separation position, and the clutch units 6, 7 to be reliably separated.

In addition, according to the operating device 1 of embodiment 1, the convex portions 228, 328 of the cord pulleys 20, 30 and the convex portions 416, 516 on the one-way clutch device 40, 50 side maintain an engaged state in the winding direction -R1 by the magnetic forces of the magnets 226, 418. As a result, the space SP in the pull-out direction +R1 is not unintentionally lost, and the space SP is maintained, allowing the cord pulleys 20, 30 to rotate freely when the operating cords 21, 31 are pulled out.

For example, in a solar shading device 1000 according to a comparative example that is equipped with an operating device that does not have the cord pulleys 20, 30 and the one-way clutch devices 40, 50, when it is desired to lower the front curtain 102 that has been folded up to the top, it is assumed that the front curtain 102 cannot be lowered. FIG. 12 is a diagram for explaining the operation of lowering the front curtain in the solar shading device according to the comparative example. Note that the position of the bottom end of the front curtain 102 when the front curtain 102 is folded up to the top is referred to as the "bottom end position K."

When the operating cord 21 is operated and continued to be pulled, the front curtain 102 hits the head rail 101. When the front curtain 102 hits the head rail 101, the front curtain 102 cannot be folded up any further. When the operating cord 21 is pulled, the bottom end of the front curtain 102 is slightly above the bottom end position K at U. In this state, the clutch ball 65 has reached the stop portion 633 of the cam drum 63, and the rotation of the cam drum 63 is restricted (see FIG. 12(a)).

When the operating cord 21 is released, the operating cord 21 is wound around the cord pulley 20 by the spiral spring 24, and the regulating member 211 comes into contact with the case 11. The operating grip 163 rises together with the operating cord 21 until the regulating member 211 comes into contact with the case 11. In this state, the clutch ball 65 has reached the holding portion 634 of the cam drum 63, and the rotation of the cam drum 63 caused by the descent of the front curtain 102 due to its own weight is stopped. As a result, the lower end of the front curtain 102 is held at the lower end position K (see FIG. 12(b)).

Next, to release the clutch unit 6 from its meshed state and lower the front curtain 102, pull the operating cord 21 slightly again. The restricting member 211 moves slightly away from the case 11, and the bottom end of the front curtain 102 moves to a position U slightly above the bottom end position K. In this state, the clutch ball 65 moves from the retaining portion 634 of the winding groove 631 toward the main release groove 635 (see FIG. 12(c)).

When the operating cord 21 is released, the weight of the front curtain 102 rotates the lifting shaft 112b. At the same time, the operating cord 21 is wound around the cord pulley 20 by the spiral spring 24.

The lift shaft 112b continues to rotate in the downward direction, and the clutch ball 65 attempts to move toward the main release part 638. However, because the operating cord 21 is once again wound around the cord pulley 20, the restricting member 211 comes into contact with the case 11 before the clutch ball 65 reaches the main release part 638. After the restricting member 211 comes into contact with the case 11, the cord pulley 20 cannot rotate, and the clutch ball 65 cannot reach the main release part 638 (see FIG. 12(d)).

In a solar shading device 1000 that does not have the cord pulleys 20, 30 and one-way clutch devices 40, 50 of the operating device 1, it is possible that the clutch ball 65 will remain on the inclined portion 637, making it impossible to lower the front curtain 102.

In contrast, in the operating device 1, the space SP allows the cord pulleys 20, 30 to rotate freely in the circumferential direction within a predetermined angular range relative to the housings 41, 51 of the one-way clutch devices 40, 50.

Figure 13 shows the relationship between the cord pulley 20 and the housing 41 of the one-way clutch device 40 when the operating cord 21 is operated, (a) shows the state of the operating cord 21 before operation, (b) shows the state of the operating cord 21 when it is operated, and (c) shows the state of the operating cord 21 when it is wound around the cord pulley 20. Figure 14 shows the state of the operating cord 21 and the state of the clutch ball 65 in the cam drum 63 when the clutch is released, (a) shows the state of the operating cord 21 in Figure 13(b) and the state of the clutch ball 65 in the cam groove 630, and (b) is a schematic diagram showing the state of the operating cord 21 in Figure 13(c) and the state of the clutch ball 65 in the cam groove 630.

In the state shown in FIG. 13(a), for example, the front curtain 102 is folded up to the top, and the restricting member 211 is in contact with the case 11. In this state, the magnet 226 of the cord pulley 20 and the magnet 418 of the housing 41 of the one-way clutch device 40 face each other and are attracted to each other, and a space SP is provided between the convex portion 228 of the cord pulley 20 and the convex portion 416 of the housing 41 of the one-way clutch device 40, which are adjacent in the pull-out direction +R1.

When the operating cord 21 is pulled from this state, only the cord pulley 20 rotates by the space SP in the pull-out direction +R1, and the operating cord 21 is in a state in which the regulating member 211 is slightly separated from the case 11. The cord pulley 20 rotates freely relative to the housing 41 of the one-way clutch device 40, and no rotational force is transmitted to the one-way clutch device 40. Therefore, the cam drum 63 and the lifting shaft 112b do not rotate, so the clutch ball 65 remains in the holding portion 634 and the front curtain 102 does not rise. Note that in this state, the cam drum 63 of the solar shading device 1000 according to the comparative example rotates, and the clutch ball 65 is separated from the holding portion 634 (see FIG. 12(c)).

When the operating cord 21 is pulled, as shown in FIG. 13(b), the convex portion 228 of the cord pulley 20 comes into contact with the convex portion 416 of the one-way clutch device 40, which is different from that shown in FIG. 13(a). In this state, the magnet 226 of the cord pulley 20 and the magnet 418 of the housing 41 of the one-way clutch device 40 are spaced apart in the circumferential direction.

When the space SP in the pull-out direction +R1 is eliminated, that is, when the convex portion 228 of the cord pulley 20 abuts against the convex portion 416 of the housing 41 of the one-way clutch device 40 in the pull-out direction +R1, the operating cord 21 can be pulled further. The cord pulley 20 rotates together with the one-way clutch device 40 in the pull-out direction +R1 (see FIG. 13(b)). As a result, the cam drum 63 and the lift shaft 112b rotate, and the clutch ball 65 moves away from the holding portion 634 and along the axis x1 toward the main release groove 635 and toward the tip (0°). The front curtain 102 rises slightly (see FIG. 14(a)).

By providing the space SP, the travel distance of the restricting member 211 of the operating cord 21 relative to the case 11 can be increased. In other words, the amount of pull-out of the operating cord 21 can be increased. Next, when the operating cord 21 is released, the power spring 24 rotates the cord pulley 20 in the winding direction -R1, winding up the operating cord 21 (see FIG. 13(c)), and then returning to the initial state (see FIG. 13(a)).

By the time the operating cord 21 is wound and the regulating member 211 abuts against the case 11, the clutch ball 65 can move to the main release part 638 (see FIG. 14(b)). Note that in this state, the clutch ball 65 in the solar shading device 1000 according to the comparative example is in a state in which the regulating member 211 abuts against the case 11 before reaching the main release part 638, so the meshed state of the clutch unit 6 is not released (see FIG. 12(d)).

In this way, the space SP in which the cord pulleys 20, 30 can rotate freely within a predetermined angular range is provided between the cord pulleys 20, 30 and the housings 41, 51 of the one-way clutch devices 40, 50 in the circumferential direction, particularly in the pull-out directions +R1, +R2, so that the pull-out amount of the operating cords 21, 31 can be increased. As a result, even if the front curtain 102 and the rear curtain 103 are folded up until they come into contact with the head rail 101, the clutch units 6, 7 can be reliably transferred from the engaged state to the released state in which they are separated.

In addition, when the operating cord 21 is wound by the cord pulley 20 in the winding directions -R1, -R2 and the restricting member 211 abuts against the case 11, the rotation of the cord pulleys 20, 30 stops, but inertia acts on the housings 41, 51 of the one-way clutch devices 40, 50 in the winding directions -R1, -R2.

In the operating device 1 according to the first embodiment, the magnets 226, 326 are provided on the side of the cord pulleys 20, 30, and the magnets 418, 518 are provided on the side of the one-way clutch devices 40, 50, so that even after the rotation of the cord pulley 20 in the winding directions -R1, -R2 has stopped, the housings 41, 51 of the one-way clutch devices 40, 50 can be prevented from rotating in the winding directions -R1, -R2 due to inertia. In other words, the suppression mechanism formed by the magnets 226, 326 of the cord pulleys 20, 30 and the magnets 418, 518 of the one-way clutch devices 40, 50 suppresses the idling of the housings 41, 51 of the one-way clutch devices 40, 50 due to inertia. This makes it possible to maintain the space SP between the convex parts 228, 328 of the cord pulleys 20, 30 and the convex parts 416, 516 of the housings 41, 51 of the one-way clutch devices 40, 50, and to prevent clutch release failure.

The manner in which the suppression mechanism is provided is not limited to this embodiment. In this embodiment, the magnets 226, 326 are held by the cord pulleys 20, 30 on the inner peripheral surface side of the enlarged diameter portions 221, 321 of the cylindrical portions 22, 32, and the magnets 418, 518 are held by the one-way clutch devices 40, 50 at the stepped portions 414, 514 of the housings 41, 51. In contrast, a magnetic body such as a magnet may be provided on the surfaces of the protrusions 228, 328 of the cord pulleys 20, 30 and the protrusions 416, 516 of the one-way clutch devices 40, 50 that engage with each other in the winding directions -R1, -R2.

In addition, in the first embodiment, the cord pulleys 20, 30 and the one-way clutch devices 40, 50 are provided with two protrusions 228, 328, 416, 516, but it is sufficient that at least one protrusion is provided, and one or three protrusions may be provided.

<Embodiment 2>
The following describes an operating device according to embodiment 2. The following mainly describes the parts that are different from the operating device 1 according to embodiment 1. Note that the same reference numerals are used to designate members that have the same configuration as the operating device 1 according to embodiment 1.

In the second embodiment, the suppression mechanism is formed by an elastic member 230 provided on the cord pulley 20A, 30A along the rotation axis x1, x2 of the cord pulley 20A, 30A, and an abutment portion 420 provided on the one-way clutch device 40, 50 and abutting against the elastic member 230. A detailed explanation is given below.

The suppression mechanisms in the pulley operation drive units 2 and 3 have the same configuration, so below, the suppression mechanisms in the pulley operation drive units 2 and 3 are described using the same diagram. Figure 15A is a perspective view of the cord pulley 20A; 30A in embodiment 2 as seen from the left side L. Figure 15B is a plan view of the cord pulley 20A; 30A in embodiment 2 as seen from the left side L.

The cord pulley 20A; 30A is a cylindrical member that, when housed in the inner plate 120, opens on the one-way clutch device 40; 50 side and closes on the inner plate 130 side.

The cylindrical portion 22; 32 has a groove portion 229; 329 that extends in the circumferential direction along the inner peripheral surface of the expanded diameter portion 221; 321. The groove portion 229; 329 is formed such that a wall portion 229a; 329a at one end in the extension direction and a wall portion 229b; 329b at the other end sandwich the hole 224; 324.

Groove 229; 329 accommodates, for example, a compression coil spring 230; 330 as an elastic member. Compression coil spring 230 has a predetermined length along groove 229, and one end abuts against wall 229a on one end side of groove 229. Compression coil spring 330 has a predetermined length along groove 329, and one end abuts against wall 329b on the other end side of groove 329.

The other end of the compression coil spring 230; 330 abuts against an abutment portion 420; 520 of the housing 41A; 51A of the one-way clutch device 40; 50 described later. The compression coil spring 230; 330 is held between the wall of the groove portion 229; 329 and the abutment portion 420; 520 of the housing 41A; 51A of the one-way clutch device 40; 50.

Figure 16 is a perspective view of the housing 41A; 51A of the one-way clutch device 40; 50 in the second embodiment, as viewed from the right side R. The housing 41A; 51A has an abutment portion 420; 520. The abutment portion 420; 520 protrudes toward the other step portions 411-413; 511-513 on the surface of the step portion 414; 514 that faces the direction in which the axis x1; x2 extends. The abutment portion 420; 520 is provided at the same position in the circumferential direction as the protrusion portion 416; 516.

When the housing 41A; 51A of the one-way clutch device 40; 50 is inserted into the cord pulley 20A; 30A, the abutment portion 420; 520 protrudes into the groove portion 229; 329 of the cord pulley 20A. The abutment portion 420; 520 abuts against the compression coil spring 230; 330 on the surface facing the winding directions -R1, -R2. This causes the protrusion 416; 516 of the housing 41A; 51A to be pressed against the protrusion 228; 328 of the cord pulley 20A; 30A in the pull-out directions +R1, +R1. In addition, the groove portion 229; 329 of the cord pulley 20A; 30A is closed in the circumferential direction by the surface on which the abutment portion 420; 520 is provided on the step portion 414; 514 of the housing 41A; 51A.

Figure 17 is a diagram for explaining the operation of the suppression mechanism in embodiment 2. Note that Figure 17 is a view from the cover 12 side. The following explanation will be given using the pulley operation drive unit 2 as an example. In Figure 17, (a) is a diagram showing the state before the operation cord 21 is pulled out, (b) is a diagram showing the state during the operation cord 21 being pulled out, (c) is a diagram showing the state during the rewinding of the operation cord 21, and (d) is a diagram showing the state after rewinding of the operation cord 21 has been completed.

Before the operating cord 21 is pulled out, that is, in the winding direction -R1, when the convex portion 228 of the cord pulley 20A and the convex portion 416 of the housing 41A of the one-way clutch device 40 are engaged or in close proximity, the abutment portion 420 is biased in the pulling direction +R1 by the compression coil spring 230 (Figure 17 (a)).

Next, when the operating cord 21 is pulled out, only the cord pulley 20A rotates freely by the space SP, and the protrusion 228 of the cord pulley 20A engages with the protrusion 416 on the housing 41A of the one-way clutch device 40 in the pull-out direction +R1. In this state, the wall portion 229a that abuts in the groove portion 229 of the cord pulley 20A, which supports one end of the compression coil spring 230, approaches the abutment portion 420 on the housing 41A of the one-way clutch device 40 by the space SP. This causes the compression coil spring 230 to be compressed (Figure 17 (b)).

Next, the operating cord 21; 31 is wound around the cord pulley 20A in the winding direction -R1. The protrusion 228 of the cord pulley 20A and the protrusion 416 on the housing 41A of the one-way clutch device 40 again engage in the winding direction -R1, and the cord pulley 20A and the housing 41A of the one-way clutch device 40 rotate together (Figure 17(c)).

When the restricting member 211 abuts against the case 11, the rotation of the cord pulley 20A stops. Immediately after the rotation of the cord pulley 20A stops, the housing 41A of the one-way clutch device 40 will continue to rotate in the winding direction -R1 due to inertia. However, the housing 41A is biased in the unwinding direction +R1 by the compression coil spring 230 at the abutment portion 420. This makes it possible to suppress the rotation of the housing 41A in such a way that the space SP in the unwinding direction +R1 between the convex portion 228 of the cord pulley 20A and the convex portion 416 of the housing 41A of the one-way clutch device 40 is significantly reduced (Figure 17(d)).

As a result, the operation device according to embodiment 2 can achieve the same effect as the operation device 1 according to embodiment 1.

<Third embodiment>
The following describes an operating device according to embodiment 3. The following mainly describes the parts that are different from the operating device 1 according to embodiment 1. Note that the same reference numerals are used to denote members that have the same configuration as the operating device 1 according to embodiment 1.

In the third embodiment, the suppression mechanism is formed by band-shaped members 125, 126 that contact the peripheral surfaces of the one-way clutch devices 40, 50 in the tangential direction. A detailed explanation is given below. Figure 18 is a diagram for explaining the configuration of the suppression mechanism in the operating device according to the third embodiment.

In the third embodiment, when the housing 41, 51 of the one-way clutch device 40, 50 is inserted into the cord pulley 20, 30, the end portion on the base end side in the insertion direction is exposed from the cord pulley 20, 30.

The housings 41, 51 have the same configuration as the one-way clutch devices 40, 50 in embodiment 1, except that they do not have the recesses 417, 517 and the magnets 226, 326.

The inner plate 120 has two pairs of retaining portions 123, 124. The retaining portions 123, 124 are provided on the surface facing the opposite side to the side facing the cord pulleys 20, 30. The pair of retaining portions 123 are each provided on the edge of the inner plate 120 along the up-down direction UD. One pair of retaining portions 123 is located on the lower side D of the housing opening 121 that houses the cord pulley 20 and the one-way clutch device 40. The other pair of retaining portions 124 is located on the upper side U of the housing opening 122 that houses the cord pulley 30 and the one-way clutch device 50.

The cross-sectional shape of each of the holding parts 123, 124 intersecting with the axis x1, x2 is C-shaped or approximately C-shaped. In other words, each of the holding parts 123, 124 opens toward the surfaces facing each other.

The belt-shaped members 125, 126 are formed of elastic plate material, for example, a leaf spring. The belt-shaped members 125, 126 are not limited to leaf springs and can be selected as appropriate. The belt-shaped member 125 is held by the inner plate 120 with each end held by a pair of holding portions 123 on the lower side D. The belt-shaped member 126 is held by the inner plate 120 with each end held by a pair of holding portions 124 on the upper side U.

The belt-shaped member 125 is attached to the retaining portion 123 so as to be in tangential contact with the outer peripheral surface of the portion (step portion 414) of the housing 41 of the one-way clutch device 40 exposed from the cord pulley 20. The belt-shaped member 125 is attached in a state in which a force is applied toward the housing 41.

The belt-shaped member 126 is attached to the retaining portion 124 so that it contacts in the tangential direction with the outer peripheral surface of the portion of the housing 51 of the one-way clutch device 50 exposed from the cord pulley 30 (the step having the largest outer diameter). The belt-shaped member 126 is attached in a state in which it is biased toward the housing 51.

The biasing force applied to the belt-shaped members 125, 126 in advance is applied so as not to impede the rotation of the housings 41, 51 by the cord pulleys 20, 30, but to suppress the rotation of the housings 41, 51 alone.

Before the operating cord 21, 31 is pulled out, that is, in the winding direction -R1, -R2, the convex portion 228, 328 of the cord pulley 20, 30 is engaged with or close to the convex portion 416, 516 on the housing 41, 51 of the one-way clutch device 40, 50. When the operating cord 21, 31 is pulled out, only the cord pulley 20, 30 rotates freely by the space SP, and in the pulling direction +R1, +R2, the convex portion 228, 328 of the cord pulley 20, 30 engages with the other convex portion 416, 516 on the housing 41, 51 of the one-way clutch device 40, 50.

When the operating cords 21, 31 are pulled out, the belt-shaped members 125, 126 are in contact with the housings 41, 51 of the one-way clutch devices 40, 50, respectively, but the rotation of the housings 41, 51 is not impeded.

When the operating cord 21, 31 is released, it rotates in the winding direction -R1, -R2 around the cord pulley 20, 30 and is wound around the cord pulley 20, 30. The convex portions 228, 328 of the cord pulley 20, 30 again engage with the convex portions 416, 516 on the housing 41, 51 of the one-way clutch device 40, 50 in the winding direction -R1, -R2, and both the cord pulley 20 and the housing 41 of the one-way clutch device 40 rotate together. In this state, although the belt-shaped members 125, 126 are in contact with the housings 41, 51 of the one-way clutch devices 40, 50, respectively, the rotation of the housings 41, 51 is not impeded.

When the restricting member 211, 311 abuts against the case 11, the rotation of the cord pulley 20, 30 stops. Immediately after the rotation of the cord pulley 20, 30 stops, the housing 41, 51 of the one-way clutch device 40, 50 tends to continue to rotate in the winding directions -R1, -R2 due to inertia. However, the belt-shaped members 125, 126 come into contact with the outer peripheral surface of the housing 41, 51, suppressing the rotation of the housing 41, 51 due to inertia in the winding directions -R1, -R2.

The suppression mechanism, such as the belt-shaped members 125, 126 in the third embodiment, can suppress rotation due to inertia of the housings 41, 51 of the one-way clutch devices 40, 50 at the end of rotation of the cord pulleys 20, 30 in the winding directions -R1, -R2.

As a result, the operation device according to embodiment 3 can achieve the same effect as the operation device 1 according to embodiment 1.

<Fourth embodiment>
The following describes an operating device according to embodiment 4. The following mainly describes the parts that are different from the operating device 1 according to embodiment 1. Note that the same reference numerals are used to designate members that have the same configuration as the operating device 1 according to embodiment 1.

In the fourth embodiment, the suppression mechanism is formed by a recess (first recess) 233 formed in the inner peripheral surface of the tubular portion 22 of the cord pulley 20B, a recess (second recess) 421 formed in the outer peripheral surface of the housing 41B of the one-way clutch device 40, and a rolling element 423 that is free to roll in the circumferential direction when partially housed in the recess 421. The details are described below.

The suppression mechanisms in the pulley operation drive units 2 and 3 have the same configuration, so below, the suppression mechanisms in the pulley operation drive units 2 and 3 are described using the same diagram. Figure 19A is a perspective view of the cord pulley 20B; 30B in embodiment 4 as seen from the left side L. Figure 19B is a plan view of the cord pulley 20B; 30B in embodiment 4 as seen from the left side L.

The cord pulley 20B; 30B is a cylindrical member that, when housed in the inner plate 120, opens on the one-way clutch device 40; 50 side and closes on the inner plate 130 side.

The cylindrical portion 22; 32 has two recesses (first recesses) 233; 333 formed on the inner peripheral surface of the enlarged diameter portion 221; 321, which are recessed radially outward. The recesses 233; 333 are formed on the side opposite the hole 224; 324 in the radial direction. The two recesses 233; 333 are formed at a predetermined interval from each other in the circumferential direction. For example, when the protrusion 228; 328 of the cord pulley 20B; 30B is engaged with the protrusion 416; 516 of the housing 41B; 51B of the one-way clutch device 40; 50 in the winding direction -R1; -R2, the rolling element 423 described later is partially housed in the recess 233 on the left side in the figure, and the rolling element 523 described later is partially housed in the recess 233 on the right side in the figure.

Figure 20A is a perspective view of the housing 41B of the one-way clutch device 40 in embodiment 4, as viewed from the right side R. Figure 20B is a plan view of the housing 41B of the one-way clutch device 40 in embodiment 4, as viewed from the right side R.

The housing 41B; 51B has two recesses 421; 521. The two recesses 421; 521 are provided at positions facing each other in the radial direction. The recesses 421; 521 are provided on the outer peripheral surface of the step portion 413; 513. Each recess 421; 521 is defined in the circumferential direction by two protrusions 422; 522 that protrude radially from the outer peripheral surface of the step portion 413; 513. The protrusions 422; 522 are provided at a predetermined interval in the circumferential direction.

A rolling element 423; 523 is housed in one of the recesses 421; 521. The rolling element 423; 523 is formed of a ball. When housed in the recess 421; 521, the rolling element 423; 523 can freely roll between the inner peripheral surface of the cylindrical portion 22; 32 of the cord pulley 20B; 30B and the outer peripheral surface of the housing 41B; 51B of the one-way clutch device 40; 50.

Figure 21 is a diagram for explaining the operation of the suppression mechanism in embodiment 4. Note that Figure 21 is a view from the cover 12 side. The following will be explained using the pulley operation drive unit 2 as an example. In Figure 21, (a) is a diagram showing the state before the operation cord 21 is pulled out, (b) is a diagram showing the state during the operation cord 21 being pulled out, (c) is a diagram showing the state during the rewinding of the operation cord 21, and (d) is a diagram showing the state after rewinding of the operation cord 21 has been completed.

Before the operating cord 21 is pulled out, that is, in the winding direction -R1, when the convex portion 228 of the cord pulley 20B is engaged with or in close proximity to the convex portion 416 of the housing 41B of the one-way clutch device 40, the rolling element 423 is housed in the recess 421, and the rolling element 423 is not housed in the recess 233 of the cord pulley 20B (see FIG. 21(a)).

When the operating cord 21 is pulled out, only the cord pulley 20B rotates freely by the space SP, and the convex portion 228 of the cord pulley 20B engages with another convex portion 416 on the housing 41B of the one-way clutch device 40 in the pull-out direction +R1. In this state, the concave portion 233 of the cord pulley 20B is in a position shifted in the circumferential direction relative to the concave portion 421 on the housing 41B of the one-way clutch device 40. When the operating cord 21 is pulled out further in the pull-out direction +R1 while the convex portion 416 on the housing 41B of the one-way clutch device 40 is engaged with the convex portion 228 of the cord pulley 20B, the rolling element 423 rolls between the inner peripheral surface of the cord pulley 20B while housed in the concave portion 421 (see FIG. 21(b)).

When the operating cord 21 is released, it rotates in the winding direction -R1 around the cord pulley 20B and is wound around the cord pulley 20B. The convex portion 228 of the cord pulley 20B moves away from the convex portion 416 on the housing 41B of the one-way clutch device 40 in the winding direction -R1 and rotates toward the other convex portion 416 (see Figure 21 (c)).

The protrusion 228 of the cord pulley 20B again engages with the protrusion 416 on the housing 41B of the one-way clutch device 40 in the winding direction -R1, and the cord pulley 20B and the housing 41B of the one-way clutch device 40 rotate together. In this state, the rolling element 423 in the recess 421 rolls as it is pressed against the recess 233 of the cord pulley 20B by centrifugal force as it rotates.

When the restricting member 211 comes into contact with the case 11, the rotation of the cord pulley 20B stops. Immediately after the rotation of the cord pulley 20B stops, the housing 41B of the one-way clutch device 40 will continue to rotate in the winding direction -R1 due to inertia. However, the housing 41B comes into contact with the protrusion 422 on the pull-out direction +R1 side of the rolling element 423, which is engaged with the recess 233 of the cord pulley 20B and the recess 421 of the housing 41B and is therefore unable to roll in the winding direction -R1, so the rotation of the housing 41B is restricted (see FIG. 21(d)).

In embodiment 4, the suppression mechanism including the recess 233 of the cord pulley 20B, the recess 421 of the housing 41B of the one-way clutch device 40, and the rolling element 423 can suppress rotation due to inertia of the housing 41B of the one-way clutch device 40 when rotation of the cord pulley 20B in the winding direction -R1 ends.

As a result, the operation device according to embodiment 4 can achieve the same effect as the operation device 1 according to embodiment 1.

＜Other＞
Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and includes all aspects included in the concept of the present invention and the scope of the claims. In addition, each configuration may be appropriately and selectively combined so as to achieve at least a part of the above-mentioned problems and effects. In addition, for example, the shape, material, arrangement, size, etc. of each component in the above embodiments may be appropriately changed depending on the specific use mode of the present invention. For example, the shading material of the solar shading device 100 in the above-mentioned embodiments 1 to 4 is arranged in the front-rear direction FB, but the operating device according to the embodiments 1 to 4 can also be applied when the shading material is an upper curtain and a lower curtain connected to each other vertically in the lifting direction UD.

The shielding material may be a single sheet, in which case the operating device may have a set of pulley operating drive unit and clutch unit.

Furthermore, in the second to fourth embodiments, a configuration equivalent to the grooves 227, 327 provided on the cord pulleys 20, 30 in the first embodiment, which accommodate the excess portion of the operating cord 21, 31 from the knot, may also be provided.

REFERENCE SIGNS LIST 1: Operation device 10: Container 11: Case 12: Cover 2, 3: Pulley operation drive unit 20, 20A, 20B, 30, 30A, 30B: Cord pulley 21, 31: Operation cord 224, 324: Hole (through hole)
226, 326...Magnet (first magnet)
227, 327 ... Groove portion 230, 330 ... Compression coil spring (elastic member)
233, 333...recess (first recess)
40, 50...One-way clutch device 418, 518...Magnet (second magnet)
420, 520: Contact portion 421, 521: Recess (second recess)
423, 523...Rolling body 41, 41A, 41B, 51, 51A, 51B...Housing SP...Space 100...Sunshading device 101...Head rail 102...Front curtain (shading material),
103... Rear curtain (shielding material)
125, 126 ... Belt-shaped member

Claims (7)

The solar shading device is used for lifting and lowering a shading material supported so as to be freely raised and lowered relative to a lifting shaft supported rotatably within a head rail of the solar shading device,
a cord pulley to which one end of an operating cord used for lifting and lowering the shielding material is fixed and which can wind and pull out the operating cord;
a clutch unit that restricts rotation of the lift shaft in a direction in which the shielding material descends due to its own weight;
a rotatable one-way clutch device provided between the cord pulley and the clutch unit for transmitting rotation of the cord pulley to the clutch unit;
Equipped with
the cord pulley and the one-way clutch device are engageable with each other in a rotational direction of the cord pulley, and a space is provided between the cord pulley and the one-way clutch device in a pull-out direction in which the operating cord is pulled out of the rotational direction, allowing the cord pulley to rotate freely relative to the one-way clutch device when the operating cord is operated,
an operating device for a solar shading device, comprising a suppression mechanism that acts on the one-way clutch device to suppress rotation of the one-way clutch device in the winding direction when the winding rotation of the cord pulley that winds up the operating cord is completed. the suppression mechanism includes a first magnet provided on the cord pulley and a second magnet provided on the one-way clutch device,
The operating device for a solar shading device according to claim 1, characterized in that the first magnet and the second magnet are arranged to attract each other when the cord pulley and the one-way clutch device are engaged during the winding rotation. the suppression mechanism includes an elastic member provided on the cord pulley along a rotation axis of the cord pulley, and a contact portion provided on the one-way clutch device and contacting the elastic member,
The operating device for a solar shading device according to claim 1, wherein the elastic member is provided so as to bias the contact portion in the pulling-out direction when the winding rotation of the cord pulley for winding up the operating cord is completed. The operating device for a solar shading device according to claim 1, characterized in that the suppression mechanism includes a band-shaped member that tangentially contacts the peripheral surface of the one-way clutch device. the suppression mechanism includes a first recess formed as a recess in an inner circumferential surface of the cord pulley, a second recess formed as a recess in an outer circumferential surface of the one-way clutch device, and a rolling element that is partially housed in the second recess and is free to roll in a circumferential direction,
The operating device for a solar shading device according to claim 1, characterized in that, when the winding rotation is completed, the first recess and the second recess face each other and hold the rolling element in the first recess and the second recess. The cord pulley has a through hole penetrating a circumferential edge portion in a direction along a rotation axis, and a groove portion extending along an inner circumferential surface,
The operating device for a solar shading device according to any one of claims 1 to 5, wherein one end of the operating cord is guided through the through hole to an inside of the cord pulley and held in the groove. Head rail and
A shielding material supported so as to be freely raised and lowered with respect to a lift shaft rotatably supported within the head rail along the longitudinal direction of the head rail;
An operating device attached to the head rail and used for raising and lowering the shielding material;
Equipped with
The operating device is
a cord pulley to which one end of an operating cord used for lifting and lowering the shielding material is fixed and which can wind and pull out the operating cord;
a clutch unit that restricts rotation of the lift shaft in a direction in which the shielding material descends due to its own weight;
a rotatable one-way clutch device provided between the cord pulley and the clutch unit for transmitting rotation of the cord pulley to the clutch unit;
having
the cord pulley and the one-way clutch device are engageable in a rotational direction of the cord pulley, and a space is provided between the cord pulley and the one-way clutch device in a pull-out direction of the rotational direction in which the operating cord is pulled out, to allow the cord pulley to rotate freely relative to the one-way clutch device when the operating cord is operated,
A solar shading device characterized in that a suppression mechanism is provided that acts on the one-way clutch device to suppress rotation of the one-way clutch device in the winding direction when the winding rotation of the cord pulley that winds up the operating cord is completed.

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