Operating device for solar shading device

Abstract

To provide a technique for preventing, when one of a plurality of shielding members is operated, an operation cord of the other shielding member from riding on the one shielding member.SOLUTION: A solar radiation shielding device 100 of the present invention includes: a head rail; at least one shielding member supported for movement vertically in a longitudinal direction LR of the head rail with respect to an elevating shaft rotatably supported by the head rail; and an operating device 1 which is attached to the head rail, has at least one cord pulley 21, 31 that is capable of winding and unwinding at least one operating cord 16, 17 used for the elevating operation of the shielding member, and transmits the rotational force of the cord pulley 21, 31 to the elevating shaft. The operating cords 16, 17 are at least partially suspended on the side opposite to the elevating shaft in the longitudinal direction LR relative to winding ranges 211, 311 of the operating cords 16,17 in the cord pulleys 21, 31 at a portion led out from the operating device 1.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention provides Operating device for solar shading device Regarding. [Background technology]

[0002] Conventionally, a double-layered tucked-up curtain (sun shading device) has been known that includes a head box and front and rear fabrics connected to the head box via ball chains so that they can be raised and lowered (see, for example, Patent Document 1). The front and rear fabrics (shading materials) are arranged side by side, front to back, with the interior and exterior of the room being the front-to-rear direction. One ball chain is provided for each of the front and rear fabric materials.

[0003] Also known is a shading device (sun shading device) such as a blind, curtain, or partition, which includes a head box (head rail) and two shading materials connected to the head box via a winding cord so that they can be raised and lowered (see, for example, Patent Document 1). The two shading materials are arranged side by side, one above the other, in the direction of elevation. An operating cord is provided for each of the two shading materials. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-16422 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when lifting cords are provided for the front and rear fabrics and one lifting cord is operated to fold up the front fabric, the other lifting cord may ride up on the folded up front fabric.When folding up the rear fabric, the other lifting cord rides up on the front fabric and is therefore above it, so it is necessary to lower the front fabric and then lower the other lifting cord.

[0006] Therefore, the present invention has been made in consideration of the above-mentioned problems, and aims to provide a technology that prevents the operating cord of one of multiple shielding materials from riding up onto another shielding material when the other shielding material is operated. [Means for solving the problem]

[0007] In order to solve the above problem, the solar shading device of the present invention comprises a head rail, at least one shading material supported along the longitudinal direction of the head rail so as to be freely raised and lowered relative to a lifting shaft rotatably supported on the head rail, and an operating device attached to the head rail and having at least one pulley capable of winding and unwinding at least one operating cord used to operate the raising and lowering of the shading material, and transmitting the rotational force of the cord pulley to the lifting shaft, wherein the operating cord, in the portion leading out from the operating device to the outside, hangs down at least partially on the side opposite the lifting shaft in the longitudinal direction beyond the winding range of the operating cord on the cord pulley.

[0008] Furthermore, in order to solve the above problem, the operating device of the present invention is used to operate the raising and lowering of at least one shading material supported so as to be freely raised and lowered on a lifting shaft rotatably supported on the head rail of a solar shading device, and comprises at least one operating cord attached to the head rail and used to operate the raising and lowering of the shading material, at least one cord pulley capable of winding and unwinding the operating cord, and a case that houses the cord pulley and guides the operating cord to the outside, and is characterized in that the operating cord, in the portion that is led out to the outside from the case, hangs down at least partially on the side opposite the lifting shaft in the longitudinal direction of the head rail beyond the winding range of the operating cord on the cord pulley.

[0009] The solar shading device is used to raise and lower at least one shading material supported so as to be freely raised and lowered relative to the head rail of the solar shading device, and comprises at least one operating cord attached to the head rail and used to raise and lower the shading material, at least one cord pulley capable of winding and unwinding the operating cord, and a case that houses the cord pulley and guides the operating cord to the outside, wherein the operating cord hangs down from the case to the outside on the opposite side to the case in a direction that intersects the direction in which the shading material is raised and lowered and a short direction that intersects the longitudinal direction of the head rail. [Effects of the Invention]

[0010] According to the present invention, it is possible to prevent the operating cord from riding up on the shielding material. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a front view of a solar shading device according to a first embodiment. [Figure 2] FIG. 2 is a side view of the solar shading device shown in FIG. [Figure 3] FIG. 2 is a perspective view of an operating device in the solar shading device. [Figure 4] FIG. [Figure 5] FIG. 2 is a side view of the operating device as seen from the right side. [Figure 6] 6 is a cross-sectional view of the operating device taken along line VI-VI in FIG. 3. [Figure 7] FIG. 2 is an exploded perspective view of a pulley operation drive unit of the operating device. [Figure 8] FIG. 2 is a perspective view for explaining the configuration of the case, as viewed obliquely from the upper right. [Figure 9] 1A and 1B are diagrams for explaining the configuration of a cord guide member, in which (a) is a perspective view, (b) is a front view seen from the front side, and (c) is a plan view seen from above. [Figure 10] FIG. 9(c) is a cross-sectional view taken along line XX in FIG. [Figure 11]FIG. 7 is a cross-sectional view taken along line XI-XI in FIG. [Figure 12] FIG. 6 is a cross-sectional view taken along line XII-XII in FIG. 5. [Figure 13] 10A and 10B are diagrams for explaining the configuration of a regulating member, in which (a) is a vertical cross-sectional view of the regulating member along the hanging direction of the operation cord, and (b) is an enlarged view of part XIII in (a). [Figure 14] 1A and 1B are diagrams for explaining the configuration of a cord pulley, in which FIG. 1A is a perspective view of the cord pulley as seen from the right side, and FIG. 1B is a perspective view of the cord pulley as seen from the left side. [Figure 15] FIG. 2 is a view showing the operating device with the cover removed. [Figure 16] 1A and 1B are perspective views for explaining the configuration of a housing of a one-way clutch device, in which FIG. 1A is a perspective view of the housing as seen from the right side, and FIG. 1B is a perspective view of the housing as seen from the left side. [Figure 17] FIG. 2 is a perspective view of a clutch unit of the operating device. [Figure 18] FIG. [Figure 19] FIG. 4 is a development view for explaining the configuration of the cam drum of the clutch unit, showing the clutch unit in a disengaged state. [Figure 20] FIG. 4 is a development view of the cam drum showing the engaged state of the clutch unit. [Figure 21] FIG. 10 is a development view of the cam drum showing the clutch unit in a rotation-stopped state (clutch spring slippage state). [Figure 22] FIG. 10 is a development view of the cam drum showing a holding state in which the position of the front curtain is held. [Figure 23] FIG. 10 is a schematic diagram showing a solar shading device according to a comparative example. [Figure 24] 10A and 10B are diagrams showing a state in which the operating grip for the rear curtain of the solar shading device according to the comparative example is lifted up when the front curtain is folded up, where (a) is a front view and (b) is a side view. [Figure 25] FIG. 10 is a front view of a solar shading device according to a second embodiment. [Figure 26]FIG. 26 is a side view of the solar shading device shown in FIG. 25. [Figure 27] FIG. 10 is a front view of a solar shading device according to a third embodiment. [Figure 28] FIG. 28 is a side view of the solar shading device shown in FIG. 27. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0013] 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 tatami curtains (roman shades), vertical blinds, aluminum blinds, pleated screens, shutters, etc. For example, the operating device 1 according to the present invention is applied to a solar shading device 100 shown in FIGS.

[0014] First Embodiment Fig. 1 is a front view of a solar shading device according to a first embodiment. Fig. 2 is a side view of the solar shading device 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.

[0015] 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 the longitudinal direction LR, for example, in FIG. 1 as viewed from the indoor side, the left 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 shading materials 12, 13 hang down or rise and fall relative 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 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 the short side direction, 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."

[0016] The solar shading device 100 according to the first embodiment includes a box-shaped head rail 101, two shading materials 12 and 13, lifting cords 14 and 15, and an operating device 1 having operating cords 16 and 17.

[0017] A solar shading device 100 according to a first embodiment includes a head rail 101, shading materials (hereinafter also referred to as "front curtains" and "rear curtains") 12, 13 supported so as to be freely raised and lowered on elevating shafts 112b, 113b rotatably supported on the head rail 101 along a longitudinal direction LR of the head rail 101, and an operating device 1 attached to the head rail 101 and having at least one cord pulley 21, 31 capable of winding and unwinding operation cords 16, 17 used to operate the elevating and lowering of the shading materials 12, 13, and transmitting the rotational force of the cord pulleys 21, 31 to the elevating shafts 112b, 113b. At least a portion of the operation cords 16, 17 extending from the operating device 1 to the outside hangs down on the opposite side of the elevating shafts 112b, 113b in the longitudinal direction LR from winding ranges 211, 311 of the operation cords 16, 17 on the cord pulleys 21, 31. The configuration of the solar shading device 100 will be specifically described below.

[0018] The head rail 101 is formed in the shape of a long box with an internal storage space. The head rail 101 has a bracket 102. The head rail 101 is attached to an attachment target, such as a window frame or a wall around a window, via the bracket 102. 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). The head rail 101 is not limited to being box-shaped, and the cross section along the short side direction FB may be I-shaped. The operating device 1 can also be attached inside the head rail 101.

[0019] Three winding drums 112a, 113a arranged one above the other in the up-down direction UD are provided inside the head rail 101. The winding drum 112a is located on the lower side D of the winding drum 113a.

[0020] 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 one another by lifting shafts 112b. The lifting shafts 112b are rotatably supported on the head rail 101.

[0021] 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 one another by lifting shafts 113b. The lifting shafts 113b are rotatably supported on the head rail 101.

[0022] In the solar radiation shading device 100, the number of winding drums 112a, 113a is not particularly limited.

[0023] The front curtain 12 and the rear curtain 13 are supported so as to be able to move up and down relative to the head rail LR along the longitudinal direction LR of the head rail 101. The front curtain 12 is located on the indoor side F in the short side direction FB relative to the shielding material 13. The rear curtain 13 is located on the outdoor side B relative to the front curtain 12 in the short side direction FB.

[0024] The front curtain 12 is wound up relative to the head rail 101 via three lifting cords 14. One end of each lifting cord 14 is fixed to the corresponding take-up drum 112a. The other end of each lifting cord 14 is attached to the lower end of the front curtain 12 in the up-down direction UD via a cord adjuster 141 on the side of the front curtain 12 facing the rear curtain 13.

[0025] The front curtain 12 is raised by winding the lifting cords 14 onto the winding drums 112a due to a rotational force transmitted from the operating device 1 via the lifting shaft 112b, and is lowered by unwinding the lifting cords 14.

[0026] The rear curtain 13 is wound up relative to the head rail 101 via three lifting cords 15. One end of each lifting cord 15 is fixed to the respective winding drum 113a. The other end of each lifting cord 15 is attached to the lower end of the rear curtain 13 in the up-down direction UD via a cord adjuster 151 on the side of the rear curtain 13 opposite the front curtain 12 (rear side B).

[0027] The rear curtain 13 ascends when each lifting / lowering cord 15 is wound onto each winding drum 113a by the rotational force transmitted from the operating device 1 via the lifting / lowering shaft 113b, and descends when each lifting / lowering cord 15 is unwound. Note that the lifting / lowering cords 15 cannot be seen in Figure 1 because they overlap with the lifting / lowering cords 14 of the front curtain 12 in the front-to-rear direction FB.

[0028] In this embodiment, the lifting cords 14, 15 hang down from three points, but they may also 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, 113a installed, etc.

[0029] Fig. 3 is a perspective view of an operating device in the solar shading device, Fig. 4 is a front view of the operating device as seen from the front side, and Fig. 5 is a side view of the operating device as seen from the right side.

[0030] The operating device 1 according to the present invention is used for operating the front curtain 12 and the rear curtain 13 which are supported so as to be freely raised and lowered on the lifting shafts 112b and 113b which are rotatably supported on the head rail 101 of the solar shading device 100, and is attached to the head rail LR. The operating cords 16 and 17 used for operation and the operating cords 16 and 17 for winding and unwinding The cord pulleys 21 and 31 accommodate the operating cord 16, The operation cords 16 and 17 are guided from the case 11 to the outside. The portion of the cord pulley 21, 31 that is led out from the cord pulley 21, 31 is at least partially The lifting shaft is located in the longitudinal direction LR beyond the winding range 211, 311 of the operating cords 16, 17. It hangs down on the opposite side from 112b and 113b.

[0031] Operating device 1 also includes restriction members 18, 19 that are attached to operation cords 16, 17 and restrict operation cords 16, 17 from being wound up into case 11. When one end (hereinafter also referred to as the "tip") 183, 193 of restriction members 18, 19 is in contact with case 11 when front curtain 12 and rear curtain 13 are not being operated to move up or down, the other end (hereinafter also referred to as the "bottom") 187, 197 of restriction members 18, 19 is located on the opposite side of one end 183, 193 from lifting shafts 112b, 113b in the longitudinal direction LR.

[0032] In addition, the case 11 has an inclined surface 44 facing the side opposite the lifting shafts 112b, 113b in the longitudinal direction LR and the lifting direction UD, and a concave accommodating portion (hereinafter also referred to as a "recess") 45 is formed in the inclined surface 44 to accommodate one end 183 of the regulating members 18, 19.

[0033] Case 11 also has at least one guide portion (hereinafter also referred to as a "cord guide member") 40, 50 that is detachable from case 11 and guides operation cords 16, 17 diagonally downward with respect to the lifting direction UD of front curtain 12 and rear curtain 13 and toward the side opposite lifting shafts 112b, 113b.

[0034] The operating device 1 further includes at least one spring member (hereinafter also referred to as a "power spring") 23, 33 that engages with the cord pulleys 21, 31 and biases the cord pulleys 21, 31 to wind up the operating cords 16, 17. The spring members 23, 33 are provided at the end of the operating device 1 on the side opposite the lifting shafts 112b, 113b in the longitudinal direction LR. The configuration of the operating device 1 will be described below.

[0035] 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 12 and the rear curtain 13 individually in response to the operation of operation cords 16, 17 hanging down from the operating device 1. The operating device 1 has two pulley operation drive units 20, 30, two clutch units 60, 70, the operation cords 16, 17, and restriction members 18, 19.

[0036] Operation cords 16, 17 are used to drive cord pulleys 21, 31 of operation device 1, which will be described later, to operate the raising and lowering of front curtain 12 and rear curtain 13. One ends of operation cords 16, 17 are fixed to cord pulleys 21, 31 of operation device 1, which will be described later. Operation cords 16, 17 hang down from operation device 1 at a predetermined interval in the front-to-rear direction FB.

[0037] Pulley operation drive units 20 and 30 generate a drive force for raising and lowering front curtain 12 and rear curtain 13 by pulling operation cords 16 and 17. Figure 6 is a cross-sectional view of the operation device taken along line VI-VI in Figure 3. Figure 7 is an exploded perspective view of the pulley operation drive unit.

[0038] Pulley operation drive units 20, 30 are arranged side by side in the up-down direction UD. Pulley operation drive unit 20 is located below pulley operation drive unit 30 in the up-down direction UD. Pulley operation drive unit 30 is located above pulley operation drive unit 20 in the up-down direction UD. Pulley operation drive units 20, 30 rotate in different directions R1, R2 when operating front curtain 12 and rear curtain 13 to raise or lower by pulling operation cords 16, 17.

[0039] Pulley operation drive unit 20 is provided for raising and lowering front curtain 12. Pulley operation drive unit 30 is provided for raising and lowering rear curtain 13. Pulley operation drive units 20 and 30 are housed in a common case 11. Pulley operation drive units 20 and 30 have cord pulleys 21 and 31 and one-way clutch devices 22 and 32, respectively.

[0040] FIG. 8 is a perspective view illustrating the configuration of the case, as seen diagonally from the upper right. The case 11 houses the cord pulleys 21, 31 and the one-way clutch devices 22, 32. The cord pulley 21 and the one-way clutch device 22 of the pulley operation drive unit 20 are engaged with each other and aligned along the longitudinal direction LR. The cord pulley 21 and the one-way clutch device 22 are arranged so as to be rotatable together about the same rotation axis x1. The cord pulley 31 and the one-way clutch device 32 of the pulley operation drive unit 30 are engaged with each other and aligned along the longitudinal direction LR. The cord pulley 31 and the one-way clutch device 32 are arranged so as to be rotatable together about the same rotation axis x2.

[0041] The storage space S in the case 11 is defined by a side wall 111, a front wall 112, a rear wall 113, an upper wall 114, and a lower wall 115. The case 11 is open in the direction opposite the head rail 101 in the longitudinal direction LR and facing the right side R, and is closed by a cover 116.

[0042] The side wall 111 is located on the side of the clutch units 60, 70 (left side L) in the longitudinal direction LR. The front wall 112 is located on the opposite side (front side F) from the bracket 102 in the front-to-rear direction FB. The rear wall 113 is located on the side where the bracket 102 is attached, facing the front wall 112 in the front-to-rear direction FB (rear side B). The upper wall 114 is located on the upper side U of the case 11 in the vertical direction UD. The lower wall 115 is located on the side facing the upper wall 114 in the vertical direction UD (lower side D).

[0043] A recess 117 is formed in the bottom wall 115 on the side opposite to the side wall 111, extending partially toward the side wall 111 along the longitudinal direction LR. The bottom wall 115 has a protrusion 115a in the central portion in the front-to-rear direction FB that protrudes toward the cover 116. Two storage sections 117F, 117B are formed on either side of the protrusion 115a in the front-to-rear direction FB.

[0044] The storage sections 117F, 117B are spaced a predetermined distance apart in the front-to-rear direction FB. The storage section 117F is located on the front wall 112 side in the front-to-rear direction FB. The storage section 117B is located on the rear wall 113 side in the front-to-rear direction FB. In the storage section 117F, the front wall 112 and the protruding portion 115a have guide strips 115b on their opposing surfaces. In the storage section 117B, the rear wall 113 and the protruding portion 115a have guide strips 115c on their opposing surfaces. The guide strips 115b, 115c extend in the longitudinal direction LR.

[0045] The case 11 further has two cord guide members (guide portions) 40, 50. The cord guide members 40, 50 are attached to the case 11 at the positions of recesses 117 in the bottom wall 115. The cord guide members 40, 50 guide the operating cords 16, 17, one end of which is fixed to the cord pulleys 21, 31, respectively, into and out of the case 11. The cord guide members 40, 50 are provided in the recesses 117 at a predetermined distance from each other in the front-to-rear direction FB. Note that the cord guide members 40, 50 have the same configuration, and therefore the configuration will be described below using the cord guide member 40 as an example.

[0046] 9A and 9B are diagrams illustrating the configuration of the cord guide member, with (a) being a perspective view, (b) being a front view seen from the front, and (c) being a plan view seen from above. FIG. 10 is a cross-sectional view taken along line XX in FIG. 9C. The cord guide member 40 is a rectangular tubular member having a substantially rectangular shape in plan view. The cord guide member 40 has a guide hole 41, an engagement recess 42, and an inclined portion 43.

[0047] The guide hole 41 extends along an axis x3 extending in the up-down direction UD when the cord guide member 40 is attached to the case 11. A winding portion 161 of the operation cord 16, which will be described later, is led out of the case 11 through the guide hole 41.

[0048] The engagement recess 42 engages with the guide strip 115c in the accommodation portion 117F of the recess 117 in the bottom wall 115. The engagement recess 42 is recessed from the outer surface of the cord guide member 40 toward the axis x3. The engagement recess 42 extends in an annular shape centered on the axis x3.

[0049] The inclined portion 43 has a slope 44 that extends obliquely with respect to the axis x3. The slope 44 of the inclined portion 43 faces the cover 116 (the right side R) when the cord guide member 40 is attached to the case 11. The inclined portion 43 further has a recess 45 where the guide hole 41 on the slope 44 is recessed. When the operating cord 16 is in a non-operating state, a joint cover portion 181 of the restricting member 18, which will be described later, abuts against the recess 45. The recess 45 is shaped to accommodate a tip portion 183 of the joint cover portion 181.

[0050] The positions of the two cord guide members 40, 50 in the operating device 1 are the same as the relative positions of the front curtain 12 and the rear curtain 13. Figure 11 is a cross-sectional view taken along line XI-XI in Figure 6. The cord guide member 40 for the operation cord 16 connected to the front curtain 12 is located closer to the front curtain 12 in the front-to-rear direction (short side direction) FB than the cord guide member 50 for the operation cord 17 connected to the rear curtain 13. In other words, the cord guide member 40 is located on the front side F of the cord guide member 50 in the front-to-rear direction FB. This allows the operator, when raising or lowering the front curtain 12, to correctly raise or lower the front curtain 12 by selecting and pulling the operation cord 16 located relatively closer to the front side F.

[0051] Similarly, cord guide member 50, which guides operation cord 17 for operating rear curtain 13, which is located on rear side B in the front-to-rear direction FB, inward and outward from operating device 1, is located on rear side B relative to cord guide member 40, which guides operation cord 16 for operating front curtain 12, which is located on front side F in the front-to-rear direction FB, inward and outward from operating device 1. This allows the operator, when wishing to raise or lower rear curtain 13, to raise or lower rear curtain 13 without making a mistake by selecting and pulling operation cord 17, which is relatively located on rear side B.

[0052] In the present embodiment, the cord guide members 40, 50 are formed separately from the case 11, but they may be formed integrally with the bottom wall 115 of the case 11. In this case, holes or the like are formed in the bottom wall 115 at positions spaced apart by a predetermined distance in the front-to-rear direction FB.

[0053] Operation cord 16 is located indoors (front side F) relative to operation cord 17. Operation cord 17 is located outdoors (rear side) B relative to operation cord 16. Operation cord 16 is used to operate the raising and lowering of front curtain 12. Operation cord 17 is used to operate the raising and lowering of rear curtain 13.

[0054] Restriction members 18, 19 that restrict the operation cords 16, 17 from being wound into the case 11 are attached to the operation cords 16, 17. The operation cords 16, 17 have cylindrical operation grips 163, 173. The operation grips 163, 173 are attached to the ends of the operation sections 162, 172 of the operation cords 16, 17 on the sides that are not fixed to the restriction members 18, 19 (see FIG. 2). Note that the operation cords 16, 17 have the same configuration, and therefore the configuration will be described below using the operation cord 16 as an example.

[0055] Fig. 12 is a cross-sectional view taken along line XII-XII in Fig. 5. Fig. 13 is a diagram for explaining the configuration of the restricting member, where (a) is a vertical cross-sectional view of the restricting member taken along the hanging direction of the operating cord, and (b) is an enlarged view of part XIII in (a). The operating cord 16 has a retracting portion 161 and an operating portion 162. The retracting portion 161 and the operating portion 162 are connected to each other by a restricting member 18.

[0056] Restriction members 18, 19 are attached to operation cords 16, 17 and come into contact with case 11 when front curtain 12 and rear curtain 13 are not being operated to move up or down, thereby restricting operation cords 16, 17 from being wound into case 11. Tip ends 183, 193 of restriction members 18, 19 come into contact with case 11 when front curtain 12 and rear curtain 13 are not being operated to move up or down. Bottoms 187, 197 of restriction members 18, 19 are located on the opposite side (right side R) from head rail 101 and lifting shafts 112b, 113b in the longitudinal direction LR relative to tip ends 183, 193. Note that restriction members 18, 19 have the same configuration, and therefore the configuration will be described below using restriction member 18 as an example.

[0057] The restricting member 18 has a joint cover portion 181 and a joint portion 182. The joint cover portion 181 and the joint portion 182 are engaged with each other.

[0058] When restricting member 18 is attached to operating cord 16, tip 183 of joint cover part 181 located on the case 11 side is in contact with cord guide member 40 when front curtain 12 is not being raised or lowered. In this contact state, the base end (bottom 187) of joint part 182 on the opposite side from case 11 is located on the right side R of tip 183 of joint cover part 181 in the longitudinal direction LR.

[0059] Joint cover portion 181 is a substantially conical cylindrical member formed of an elastic material such as rubber. Joint cover portion 181 may be formed of any material that is elastically deformable. Joint cover portion 181 is closed by tip portion 183 on the side that contacts case 11, and is open on the base end side.

[0060] The joint cover part 181 is formed so as to taper towards the tip part 183 along an axis x4 that is along the insertion direction In of the joint part 182. The tip part 183 is curved in a dome shape. A hole 184 is formed in approximately the center of the tip part 183. The joint cover part 181 has an annular groove 185. The groove 185 is formed in a concave shape on the inner surface at the end on the base end side.

[0061] The joint part 182 is a conical columnar member formed of, for example, rubber, synthetic resin, or the like. The joint part 182 has a columnar part 186 and a bottom part 187. The joint part 182 is inserted into the joint cover part 181 from the base end side of the columnar part 186. In the insertion direction In, the tip of the columnar part 186 is curved in a dome shape.

[0062] The columnar portion 186 has a through hole 188 and a protrusion 189. The through hole 188 extends from the tip of the columnar portion 186 to the bottom portion 187 along the axis x4. The columnar portion 186 also penetrates in a direction intersecting the axis x4. The protrusion 189 is formed to protrude outward. The protrusion 189 extends along the circumferential direction on the bottom portion 187 side. The protrusion 189 engages with the groove 185 of the joint cover portion 181.

[0063] The bottom portion 187 is formed integrally with the columnar portion 186 on the side opposite to the tip of the columnar portion 186. The bottom portion 187 is formed in a circular shape in a plan view, and has a larger diameter than the columnar portion 186. The outer diameter of the bottom portion 187 is approximately the same as the outer diameter of the base end side of the joint cover portion 181.

[0064] The hole 184 of the joint cover part and the through-hole 188 of the joint part 182 are concentric and aligned with each other when the joint part 182 is inserted into the joint cover part 181. The take-up part 161 of the operating cord 16 is inserted through the hole 184 and the upper through-hole 188. The take-up part 161 has a knot at its end inside the restricting member 18, and this knot prevents the take-up part 161 from slipping out of the hole 184 and the upper through-hole 188 (see Figure 12).

[0065] With the joint cover part 181 and the joint part 182 engaged with each other, the operating part 162 of the operating cord 16 is inserted through a through-hole 188 in the bottom part 187 of the joint part 182. The operating part 162 has a knot at its end inside the restricting member 18, and this knot prevents the operating part 162 from slipping out of the through-hole 188.

[0066] A clearance C is provided between the tip end 183 of the joint cover part 181 and the columnar part 186 of the joint part 182 on an axis x4 that passes through the centers of the joint cover part 181 and the joint part 182 when the joint cover part 181 and the joint part 182 are engaged with each other. The clearance C is reduced by deformation of the joint cover part 181.

[0067] The restricting member 18 is configured so that the axis x4 is inclined downward D in the longitudinal direction LR when the tip 183 of the joint cover portion 181 is in contact with the cord guide member 40. The bottom 187 of the joint portion 182 is located on the cover 116 side (right side R) with respect to the tip 183 of the joint cover portion 181. In other words, the position where the operating portion 162 of the operation cord 16 hangs down from the restricting member 18 is on the opposite side to the head rail 101 (right side R) with respect to the position where the winding portion 161 of the operation cord 16 advances from the cord guide member 40 of the case 11. Note that while the restricting member 18 has been formed in a cylindrical shape, the shape is not limited to this and may be formed in a rectangular tube shape.

[0068] 14A and 14B are diagrams for explaining the configuration of the cord pulley, with (a) being a perspective view of the cord pulley as seen from the right side and (b) being a perspective view of the cord pulley as seen from the left side. The cord pulleys 21 and 31 are rotatably supported between inner plates 80 and 90, which will be described later. One end of the operation cord 16 is fixed to the cord pulley 21. One end of the operation cord 17 is fixed to the cord pulley 31. The operation cords 16 and 17 are wound around the outer circumferential surfaces of the cord pulleys 21 and 31. The operation cords 16 and 17 are wound around the outer circumferential surfaces of the cord pulleys 21 and 31 within predetermined ranges (winding ranges) 211 and 311 along the rotation axes x1 and x2. and is wound up.

[0069] The guide holes 41, 51 through which the cord guide members 40, 50 guide the operating cords 16, 17 inward and outward are positioned so as to overlap the winding ranges 211, 311 of the cord pulleys 21, 31 in the longitudinal direction LR (see FIG. 6). The cord pulley 21 is positioned on a lower side D relative to the cord pulley 31 in the up-down direction UD. The cord pulley 31 is positioned on an upper side U relative to the cord pulley 21 in the up-down direction UD. The cord pulleys 21, 31 have cylindrical winding portions 212, 312 and columnar locking portions 213, 313. Since the cord pulleys 21, 31 have the same configuration, the configuration of the cord pulleys 21, 31 will be described below using the cord pulley 21 as an example.

[0070] The retraction portion 212 has a diameter larger than the diameter of the locking portion 213. The cord pulley 21 is partially rotatably supported at the retraction portion 212 by an inner plate 80 (described later) along a rotation axis x1.

[0071] One end of the winding portion 212, to which a spiral spring 23 (described later) is attached, is closed by a locking portion 213, and the other end is open. The winding portion 212 has two flanges 214. The flanges 214 are provided along the axis x1, spaced apart by a winding range 211. The flanges 214 protrude in an annular shape radially outward from the outer circumferential surface of the winding portion 212.

[0072] The winding portion 212 has two protrusions 215 on its inner circumferential surface as engagement portions (first engagement portions). The two protrusions 215 are provided at positions facing each other in the radial direction. The protrusions 215 extend from the inner circumferential surface along the axis x1 and protrude toward the axis x1. The cord pulley 21 engages with the one-way clutch device 22, which will be described later, at the protrusions 215.

[0073] The locking portion 213 engages with the spiral spring 23. The locking portion 213 is formed in a cylindrical shape. A slit 216 is formed at the tip of the locking portion 213. The slit 216 extends in the radial direction and the extension direction of the locking portion 213.

[0074] The inner plate 80 has two accommodating holes 81, 82 aligned in the up-down direction UD. The accommodating hole 81 is located on a lower side D of the accommodating hole 82 in the up-down direction UD. The accommodating hole 81 rotatably supports the cord pulley 21 in the winding portion 212. The accommodating hole 82 is located on an upper side U of the accommodating hole 81 in the up-down direction UD. The accommodating hole 82 rotatably supports the cord pulley 31 in the winding portion.

[0075] The operating device 1 further includes a roller 85 between the inner plates 80 and 90. The roller 85 guides the operating cord 17, which is wound around the cord pulley 31 for raising and lowering the trailing curtain 13, from the inside to the outside of the case 11. In other words, the operating cord 17 passes between the roller 85 and the rear wall 113 of the case 11.

[0076] The roller 85 is provided between the cord pulleys 21, 31 arranged above and below in the up-down direction UD. The roller 85 is supported by the inner plates 80, 90 so as to be rotatable about an axis extending in the longitudinal direction LR. The roller 85 is provided on the rear side B in the front-to-rear direction FB. The position at which the roller 85 is provided in the front-to-rear direction FB is such that the direction in which the operating cord 17 hanging down from the cord pulley 31 extends is toward the rear wall 113. As a result, below the roller 85 on the side D, the operating cord 17 passes outside the operating cord 16 wound around the cord pulley 21 (see FIG. 11).

[0077] The spiral springs 23, 33 are formed, for example, from a band-shaped elastic member made of metal. The spiral springs 23, 33 are formed in a spiral shape. Figure 15 is a diagram showing the operating device with the cover removed. The spiral springs 23, 33 are provided on the cover 116 side of the case 11. The spiral springs 23, 33 are housed in the inner plate 90.

[0078] The power springs 23, 33 are engaged with the cord pulleys 21, 31 which are rotatable so as to be able to wind and unwind the operation cords 16, 17. The power springs 23, 33 bias the cord pulleys 21, 31 so as to wind the operation cords 16, 17 onto the cord pulleys 21, 31.

[0079] The spiral springs 23, 33 each have two engaging portions 231, 232, 331, 332. The engaging portions 231, 232, 331, 332 are provided at each end of the spiral springs 23, 33 in the circumferential direction. The engaging portions 231, 331 are formed at the outer end of the spiral springs 23, 33 in the radial direction. The engaging portions 231, 331 are portions that are folded back outward in the winding direction. The engaging portions 232, 332 are formed at the inner end of the spiral springs 23, 33 in the radial direction. The engaging portions 232, 332 are portions that are folded back inward in the winding direction.

[0080] The inner plate 90 has two housing portions 91, 92 arranged one above the other in the up-down direction UD. The housing portion 91 is located on a lower side D relative to the housing portion 92 in the up-down direction UD. The housing portion 91 houses the spiral spring 23. The housing portion 92 is located on an upper side U relative to the housing portion 91 in the up-down direction UD. The housing portion 92 houses the spiral spring 33.

[0081] The storage sections 91, 92 are defined by wall sections 911, 921 that protrude from the flat plate section of the inner plate 90 toward the cover 116. Slits 912, 922 are formed in the wall sections 911, 921, respectively. The slit 912 in the wall section 911 is formed on a lower side D of the wall section 911 of the storage section 91 in the up-down direction UD. The slit 922 in the wall section 921 is formed on an upper side U of the wall section 921 of the storage section 92 in the up-down direction UD.

[0082] The engaging portions 231 and 331 of the spiral springs 23 and 33 are respectively engaged with the wall portions 911 and 921 at the slits 912 and 922 of the housing portions 91 and 92. The engaging portion 232 of the spiral spring 23 is engaged with the cord pulley 21 at the slit 216 of the cord pulley 21. The engaging portion 332 of the spiral spring 33 is engaged with the cord pulley 31 at the slit of the cord pulley 31.

[0083] The one-way clutch devices 22, 32 are provided along the axes x1, x2 between the cord pulleys 21, 31 and the clutch units 60, 70, respectively, and transmit rotational force to the clutch units 60, 70. The one-way clutch devices 22, 32 are provided on the clutch unit 60, 70 side of the cord pulleys 21, 31 in the longitudinal direction LR (FIG. 6). The one-way clutch devices 22, 32 are inserted into the cord pulleys 21, 31, respectively, and can rotate integrally with the cord pulleys 21, 31.

[0084] The one-way clutch device 22 transmits the rotational force only in a predetermined rotational direction to the downstream clutch unit 60 using the output transmitted from the cord pulley 21. The one-way clutch device 32 transmits the rotational force only in a predetermined rotational direction to the downstream clutch unit 70 using the output transmitted from the cord pulley 31.

[0085] The one-way clutch devices 22, 32 have housings 221, 321 and one-way clutches 227, 327 (see FIG. 7). Since the housings 221, 321 have the same configuration, the configuration of the housing 221 will be described below as an example.

[0086] 16A and 16B are perspective views illustrating the configuration of the housing of the one-way clutch device, with (a) being a perspective view of the housing as seen from the right side and (b) being a perspective view of the housing as seen from the left side. The housing 221 is formed in a cylindrical shape with one end on the cord pulley 21 side closed. The outer peripheral surface of the housing 221 engages with the inner peripheral surface of the cord pulley 21. The housing 221 is formed as an insertion member that is inserted into the cord pulley 21. The housing 221 has three stepped portions 222 to 224 with different outer diameters.

[0087] The step portion 222, the step portion 223, and the step portion 224 are provided in this order in the direction of insertion into the cord pulley 21. The outer diameter of the housing 221 increases in the order of the step portion 222, the step portion 223, and the step portion 224.

[0088] The step portion 223 has two protrusions 225 on its outer circumferential surface as engagement portions (second engagement portions). The two protrusions 225 are provided at positions facing each other in the radial direction. The protrusions 225 extend along the axis x1 on the outer circumferential surface and protrude from the outer circumferential surface in a direction away from the axis x1. The outer diameter of the protrusions 225 is approximately the same as the outer diameter of the step portion 224. The one-way clutch device 22 engages with the protrusion 215 of the cord pulley 21 at the protrusions 225 in the circumferential direction.

[0089] The housing 221 has three protrusions 226 on its inner circumferential surface. The protrusions 226 are provided at equal intervals on the inner circumferential surface of the step portion 284. The protrusions 226 extend along the axis x1 on the inner circumferential surface and protrude in a semicircular shape from the inner circumferential surface toward the axis x1. The protrusions 226 engage with a one-way clutch 227, which will be described later.

[0090] The one-way clutches 227, 327 have their outer peripheral surfaces engaged with the inner peripheral surfaces of the housings 221, 321. The one-way clutches 227, 327 are unable to rotate relative to the housings 221, 321. The one-way clutches 227, 327 transmit only the rotation of the operating cords 16, 17 in the unwinding direction to the lifting shafts 112b, 113b via the clutch units 60, 70. The one-way clutches 227, 327 are press-fitted into the housings 221, 321, and are therefore rotatable integrally with the housings 221, 321.

[0091] The one-way clutches 227, 327 are formed in a disk shape. The one-way clutches 227, 327 are housed in the housings 221, 321. The one-way clutches 227, 327 have a hole in the center and three recesses on the outer circumferential surface. Drive shafts 611, 711 of clutch units 60, 70 (described later) are inserted into the holes of the one-way clutches 227, 327 so as to be unable to rotate relative to each other.

[0092] The recesses extend along the axes x1 and x2 on the outer peripheral surface and are provided at equal intervals in the circumferential direction. The recesses are semicircular recesses that extend from the outer peripheral surface toward the axes x1 and x2. One-way clutch 227 engages with protrusion 226 of housing 221 at the recesses so as to be non-rotatable relative to each other. One-way clutch 327 engages with protrusion 321 at the recesses so as to be non-rotatable relative to each other.

[0093] With one-way clutch devices 22, 32 inserted into cord pulleys 21, 31, a space SP is provided between cord pulleys 21, 31 and one-way clutch devices 22, 32 in rotational directions R1, R2, which allows cord pulleys 21, 31 to rotate freely relative to one-way clutch devices 22, 32 when front curtains 12 and rear curtains 13 are switched between a lifting / lowering operation state and a non-lifting / lowering operation state. When cord pulleys 21, 31 rotate, convex portions 215, 315 come into contact with convex portions 225, 325 of one-way clutch devices 22, 32, causing one-way clutch devices 22, 32 to rotate.

[0094] Fig. 17 is a perspective view of the clutch unit of the operating device. Fig. 18 is an exploded perspective view of the clutch unit. The clutch units 60, 70 are connected to the case 11 of the pulley operation drive units 20, 30 at the side wall 111 opposite the cover 116.

[0095] The clutch units 60 and 70 are each switchable between a transmission state in which the rotational force of the cord pulleys 21 and 31 is transmitted to the downstream lift shafts 112b and 113b when the operating cords 16 and 17 are operated, and a non-transmission state in which the rotational force of the cord pulleys 21 and 31 is not transmitted to the downstream lift shafts 112b and 113b when the operating cords 16 and 17 are not operated. When the operating cords 16 and 17 are not operated, the restricting members 18 and 19 are in contact with the case 11 of the operating device 1.

[0096] The clutch units 60, 70 are respectively connected to the one-way clutch devices 22, 32 of the pulley operation drive units 20, 30. The clutch units 60, 70 have a transmitting side rotating portion 61, 71, a transmitted side rotating portion 62, 72, a cam drum 63, 73, a clutch case 64, 74, and a clutch ball 65, 75.

[0097] The transmission side rotating portions 61, 71 are respectively connected to the pulley operation drive units 20, 30. The transmission side rotating portions 61, 71 have drive shafts 611, 711, clutch spring cylinders 612, 712, clutch springs 613, 713, and transmission side meshing disks 614, 714.

[0098] The drive shafts 611, 711 are connected to the one-way clutch devices 22, 32 of the pulley operation drive units 20, 30. When the operation cord 16 is pulled in one direction, the drive shaft 611 rotates in a first rotation direction R1 (for example, counterclockwise when viewed from the pulley operation drive units 20, 30). When the operation cord 17 is pulled in one direction, the drive shaft 711 rotates in a second rotation direction R2 (for example, clockwise when viewed from the pulley operation drive units 20, 30).

[0099] The clutch spring barrels 612, 712 are splined to the drive shafts 611, 711. The clutch spring barrels 612, 712 rotate together with the drive shafts 611, 611 and are movable relative to the drive shafts 611, 711 along the axes x1, x2.

[0100] Cylindrical clutch springs 613, 713 are wound around the outer circumferential surfaces of the clutch spring cylinders 612, 712. In an unloaded state, the clutch springs 613, 713 use their elasticity to tighten the outer circumferential surfaces of the clutch spring cylinders 612, 712. Therefore, when the clutch spring cylinders 612, 712 rotate, the clutch springs 613, 713 rotate integrally. The transmission side meshing disks 614, 714 are provided at the ends of the clutch spring cylinders 612, 712 on the opposite side of the axes x1, x2 from the pulley operation drive units 20, 30.

[0101] 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 20, 30 side. The drive shaft 611, 711 is rotatably housed in the cam drum 63, 73. The cam drum 63, 73 has an engaging portion 63a, 73a. This engaging portion 63a, 73a is formed as a notch at the end of the cam drum 63, 73 on the pulley operation drive unit 20, 30 side. The clutch spring 613, 713 engages with the engaging portion 63a, 73a at the end opposite to the transmission side rotating portion 61, 71.

[0102] The transmitted-side rotating portion 62, 72 has a driven shaft 621, 721 and a transmitted-side meshing disk 622, 722. The transmitted-side meshing disk 622, 722 is fixed to the end of the driven shaft 621, 721 on the drive shaft 611, 711 side. The drive shaft 611, 711 is rotatably housed in the clutch case 64, 74 and the cam drum 63, 73 at the end opposite the transmitted-side meshing disk 622, 722. The driven shaft 621, 721 has an end opposite the pulley operation drive unit 20, 30 connected to the lift shaft 112b, 113b via a connector 623, 723, and rotates together with the lift shaft 112b, 113b.

[0103] The cam drums 63, 73 are rotatable together with the clutch spring barrels 612, 712 via the clutch springs 613, 713. Furthermore, when the clutch springs 613, 713 are relaxed, the cam drums 63, 73 are rotatable relative to the clutch spring barrels 612, 712. Furthermore, the cam drums 63, 73 are movable along the axes x1, x2 relative to the drive shafts 611, 711.

[0104] 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 20, 30 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 clutch spring cylinders 612, 712.

[0105] An endless cam groove 630, 730 is formed around the outer circumferential surface of the cam drum 63, 73. A holding groove 641, 741 is formed on the inner surface of the clutch case 64, 74 (see FIG. 6). The clutch balls 65, 75 are accommodated in the cam grooves 630, 730 and the holding grooves 641, 741 so as to be able to roll.

[0106] Figure 19 is an exploded view for explaining the configuration of the clutch unit cam drum, showing the clutch unit in a disengaged state. Note that since cam drums 63 and 73 have the same configuration, the configuration of cam drum 63 will be explained below as an example. Cam groove 630 has, as its main groove, winding groove 631 (see the path indicated by the dashed dotted line) that is formed endlessly and continuously in the circumferential direction. Winding groove 631 has a meshing portion 632, a stop portion 633, and a retaining portion 634.

[0107] The meshing portion 632 is curved toward the base end side (right side in the drawing). When the clutch balls 65, 75 move relative to the cam drum 63 and are positioned at the meshing portion 632, the clutch units 60, 70 perform a transmission operation.

[0108] The stop portion 633 is curved convexly in the opposite direction to the first rotation direction (winding direction) R1 of the cam drum 63. When the clutch ball 65 moves relatively to the stop portion 633 and is positioned thereon, the rotation of the cam drum 63 in the first rotation direction R1 is restricted.

[0109] The holding portion 634 is curved in a convex shape in the first rotation direction R1 of the cam drum 63. When the pulling of the operating cord 16 in one direction is stopped midway and the holding portion 634 is released, the clutch ball 65 enters the holding portion 634, and the rotation of the cam drum 63 in the second rotation direction R2 due to the descent of the front curtain 12 under its own weight is restricted, and the front curtain 12 does not descend under its own weight.

[0110] 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 that faces the tip (0°) side, and a main release portion 638 that is the end of the inclined portion 637. When the clutch ball 65 moves relatively to the main release portion 638 and is positioned there, the clutch unit 60 performs a transmission release operation, which will be described later.

[0111] The auxiliary release groove 636 branches off from the winding groove 631 near the meshing portion 632. The auxiliary release groove 636 has an inclined portion that slopes toward the base end (360°) and an end portion at the end of the inclined portion, which is an auxiliary release portion 639. When the clutch ball 65 moves relatively to this auxiliary release portion 639 and is positioned there, the clutch unit 60 performs a release operation of the transmission.

[0112] 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.

[0113] The length l of the retaining groove 641 along the axis x1 is formed to be 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, auxiliary release portion 639) located on the tip (0°) side of the meshing portion 632 located on the base end (360°) side of the cam groove 630 (d>l).

[0114] When the clutch ball 65 moves to one end or 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 be positioned there.

[0115] Next, the operation of the clutch units 60, 70 in the solar shading device 100 will be described with reference to Figures 19 to 22. The operation of the clutch units 60, 70 is different in the direction of rotation. Since the rest of the mechanisms are the same, the operation will be explained below using clutch unit 60 as an example. Figure 20 shows the clutch unit in an engaged state. Figure 21 shows the clutch unit in a stopped state (clutch spring slip state). Figure 22 shows the held state in which the position of the front curtain is held.

[0116] First, the operation of the clutch unit 60 when raising the front curtain 12 in the solar shading device 100 will be described.

[0117] For example, before the start of operation, the clutch unit 60 is in a disengaged state. That is, before the start of operation, the transmission side meshing disk 614 of the transmission side rotating portion 61 and the transmitted side meshing disk 622 of the transmitted side rotating portion 62 are separated from each other and are in a disengaged state, as shown in Fig. 19. The operation of lifting the front curtain 12 by pulling the operating cord 16 in one direction from this state (the winding-up operation of winding up the lifting cord 14) will be described below.

[0118] When the operating cord 16 is pulled in one direction, the cord pulley 21 rotates in a first rotational direction R1. This rotation is transmitted to the drive shaft 611 of the transmission-side rotating portion 61 in the clutch unit 60 via the one-way clutch device 22. The drive shaft 611 rotates in the first rotational direction R1. When the drive shaft 611 rotates in the first rotational direction R1, the cam drum 63 rotates in the first rotational direction R1 via one end of the clutch spring 613 wound around the clutch spring cylinder 612.

[0119] As shown in Figure 19, the clutch ball 65, which had been 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 also moves within the retaining groove 641 toward the base end (to the right in Figure 19).

[0120] When the clutch ball 65 reaches the base end of the retaining groove 641 (the right end in FIG. 19), further movement along the axis x1 is restricted, and the cam drum 63 moves toward the tip end along the axis x1.

[0121] When the cam drum 63 moves toward the tip end, the transmission side meshing disk 614 of the clutch spring cylinder 612, which moves along the axis x1 together with the cam drum 63, also moves toward the tip end along the axis x1 and meshes with the transmitted side meshing disk 622, as shown in Figure 20. In this state, the clutch unit 60 is in an engaged state.

[0122] 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 disk 614 and the transmitted side meshing disk 622, and the lifting shaft 112b starts to raise (wind up) the front curtain 12.

[0123] Further, when the operating cord 16 is continued to be 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 Figure 21. Then, the clutch ball 65 is restrained by the stop portion 633, and the rotation of the cam drum 63 is restrained and stopped.

[0124] In this state, if the operating cord 16 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 the rotation of the clutch spring 613 stops along with the cam drum 63, and the clamping force of the clutch spring 613 on the clutch spring cylinder 612 is loosened.

[0125] Therefore, when the operating cord 16 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.

[0126] When the operation of the front curtain 12 is stopped by stopping pulling the operating cord 16 in one direction after raising (winding up) the front curtain 12 to the desired height, the lifting shaft 112b rotates in the direction opposite to the winding direction, i.e., in the second rotation direction R2, due to the weight of the front curtain 12. The cam drum 63 further rotates in the second rotation direction R2 via the driven shaft 621, the transmitted side meshing disk 622, the transmitted side meshing disk 614, the clutch spring cylinder 612, and the clutch spring 613.

[0127] 22, this rotation causes clutch ball 65 to enter holding portion 634, and rotation of cam drum 63 in second rotation direction R2 caused by the descent of front curtain 12 due to its own weight is stopped. This makes it possible to hold front curtain 12 at a desired height.

[0128] Next, when lowering the front curtain 12 in the wound-up state, the operating cord 16 is pulled slightly in the same direction as when raising the curtain, and in the clutch unit 60, the clutch ball 65 moves from the holding portion 634 shown in FIG. 21 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 or beyond branch point B.

[0129] Then, when the operation cord 16 is stopped from being pulled in one direction and the operation is stopped, the weight of the front curtain 12 causes the lifting shaft 112b to rotate in the second rotation direction R2, and rotates the cam drum 63 in the second rotation direction R2 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.

[0130] The clutch ball 65 enters the main release groove 635 from the branch portion B and attempts to move relative to the cam drum 63 from the inclined portion 637 to the main release portion 638, but since movement along the axis x2 is restricted at the tip of the retaining groove 641, the cam drum 63 moves toward the base end.

[0131] 19, the transmission side meshing disk 614 and the transmitted side meshing disk 622 move away from each other and are no longer meshed. The transmitted side meshing disk 622, the driven shaft 621, and the lift shaft 112b then become freely rotatable, and the front curtain 12 descends under its own weight and enters the closed state.

[0132] Since the meshing between the transmission side meshing disk 614 and the transmission side meshing disk 622 is released, the rotation of the driven shaft 621 in the second rotation direction R2 caused by the descent of the front curtain 12 due to its own weight is not transmitted to the drive shaft 611, the clutch spring cylinder 612, and the cam drum 63.

[0133] As described above, in the raising operation (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 from each other (see FIG. 19), and the operating cord 16 is pulled in one direction to bring them into an engaged state as shown in FIG. 20, and the front curtain 12 is wound up.

[0134] When the operation of the operating cord 16 is stopped immediately 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.

[0135] 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 19).

[0136] According to the above-described solar shading device 100, the hanging positions of the operating cords 16, 17 are on the opposite side of the lifting shafts 112b, 113b in the head rail 101 in the longitudinal direction LR from the winding ranges 211, 311 of the operating cords 16, 17 around the cord pulleys 21, 31 in the operating device 1. In other words, the operating cords 16, 17 hang down from the case 11 at positions away from the head rail 101 and the lifting shafts 112b, 113b.

[0137] 23 is a schematic diagram showing a solar shading device according to a comparative example. For example, in solar shading device 400 according to the comparative example, the hanging position of operating cord 416 was directly below winding range 411 of cord pulley in operating device 401.

[0138] 24A and 24B are diagrams showing a state in which the operating grip for the rear curtain rides up when the front curtain of a solar shading device according to a comparative example is folded up, with (a) being a front view and (b) being a side view. When the hanging position of operating cord 416 is directly below winding range 411, for example, when operating cord 416 is pulled to fold up front curtain 412, operating grip 473 of operating cord 417 for rear curtain 413 may ride up on the folded up front curtain 412. As a result, operating grip 473 is lifted up along with front curtain 412, and when operating rear curtain 413, front curtain 412 must be lowered again, hindering rapid operation.

[0139] In contrast, with the solar shading device 100 described above, the hanging positions of the operating cords 16, 17 are on the opposite side of the head rail 101 and the lifting shafts 112b, 113b in the longitudinal direction LR from the winding ranges 211, 311 of the operating cords 16, 17 on the cord pulleys 21, 31 within the operating device 1. Therefore, the hanging positions of the operating cords 16, 17 are closer to the ends of the front and rear curtains 12, 13 in the longitudinal direction LR. As a result, the operating cords 16, 17 are guided and hanging in a direction away from the front and rear curtains 12, 13, so that the operating grips 163, 173 remain hanging down without climbing up on the front and rear curtains 12, 13. Even if the operating grips 163, 173 climb up on the front and rear curtains 12, 13, they will fall off the ends of the front and rear curtains 12, 13.

[0140] Furthermore, by the restricting members 18 and 19 of the operating device 1, the operating cords 16 and 17 that are led out from the operating device 1 are guided in a direction away from the front curtain 12 and the rear curtain 13. This makes it possible to further prevent the operating grips 163 and 173 from riding up onto the front curtain 12 and the rear curtain 13.

[0141] Furthermore, since the spiral springs 21, 31 are provided on the cord pulleys 21, 31 on the side opposite to the one-way clutch devices 22, 32, maintenance of the spiral springs 23, 33 can be easily performed by simply removing the cover 116.

[0142] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the first embodiment described above and includes all aspects encompassed within the concept and scope of the claims. Furthermore, each configuration may be appropriately and selectively combined to achieve at least some of the above-described problems and effects. Furthermore, for example, the shape, material, arrangement, size, etc. of each component in the above-described embodiment may be appropriately modified depending on the specific mode of use of the present invention.

[0143] <Second embodiment> A solar shading device 100A according to the second embodiment will be described below. The following mainly describes the parts that are different from the operating device 1 and solar shading device 100A according to the first embodiment. Fig. 25 is a front view of the solar shading device according to the second embodiment. Fig. 26 is a side view of the solar shading device shown in Fig. 25.

[0144] The solar shading device 100A of the second embodiment comprises a box-shaped head rail 101A, two shading materials 12A, 13A, lifting cords 14A, 15A, an intermediate rail 120A, a bottom rail 130A, and an operating device 1A having operating cords 16A, 17A.

[0145] The shading materials in the solar shading device 100A according to the second embodiment are an upper curtain (first shading material) 12A and a lower curtain (second shading material) 13A that are connected to each other vertically in the lifting / lowering direction UD of 12A, 13A. A cord guide member 40A for an operation cord 16A used to lift / lower the upper curtain 12A and a cord guide member 50A for an operation cord 17A used to lift / lower the lower curtain 13A are provided at different height positions in the lifting / lowering direction UD.

[0146] The head rail 101A is formed in the shape of a long box with an internal storage space. The head rail 101A has a bracket 102A. The head rail 101A is attached to an attachment target, such as a window frame or a wall around a window, via the bracket 102A. An operating device 1A, which will be described later, is attached to one end (the right side R in FIG. 26) in the longitudinal direction L of the head rail 101A. Note that the head rail 101A is not limited to a box shape, and the cross section along the short side direction FB may be I-shaped. The operating device 1A can also be attached inside the head rail 101A.

[0147] A first drive device (not shown) for raising and lowering the intermediate rail 120A and a second drive device (not shown) for raising and lowering the bottom rail 130A are provided within the head rail 101A. One end of a lifting / lowering cord 14A for raising and lowering the intermediate rail 120A is fixed to the first drive device so that it can be wound and unwound. The other end of the lifting / lowering cord 14A is fixed to the intermediate rail 120A. One end of a lifting / lowering cord 15A for raising and lowering the bottom rail 130A is fixed to the second drive device so that it can be wound and unwound. The other end of the lifting / lowering cord 15A is fixed to the bottom rail 130A. The two lifting / lowering cords 14A and the two lifting / lowering cords 15A are provided at a predetermined interval along the longitudinal direction LR.

[0148] In this embodiment, the lifting cords 14A, 15A hang down from two points, but they may also hang down from one, two, or four or more points depending on the length of the solar shading device 100A, the number of winding drums installed, etc.

[0149] The intermediate rail 120A is formed long in the longitudinal direction LR. The other ends of the two lifting / lowering cords 14A are fixed to the intermediate rail 120A, and the intermediate rail 120A hangs down from the head rail 101A. The bottom rail 130A is formed long in the longitudinal direction LR. The other ends of the two lifting / lowering cords 15A are fixed to the bottom rail 130A, and the bottom rail 130A hangs down from the head rail 101A.

[0150] The upper end of the upper curtain 12A is connected to the lower surface of the head rail 101A, and the lower end is connected to the upper surface of the intermediate rail 120A. The upper curtain 12A is formed in a pleated shape that can be folded in the up-down direction UD, and two lifting cords 14A are inserted in the up-down direction UD.

[0151] The upper end of the lower curtain 13A is connected to the lower surface of the intermediate rail 120A, and the lower end is connected to the upper surface of the bottom rail 130A. The lower curtain 13A is formed in a pleated shape that can be folded in the up-down direction UD, and two lifting cords 15A are inserted in the up-down direction UD.

[0152] In the solar shading device 100A according to the second embodiment, the operating device 1A is attached, for example, to the end of the right side R of the head rail 101A. The operating device 1A raises and lowers the upper curtain 12A and the lower curtain 13A individually in response to the operation of operation cords 16A and 17A hanging down from the operating device 1A. The operating device 1A has operation cords 16A and 17A, regulating members 18A and 19A, two pulley operation drive units (not shown), and two clutch units (not shown).

[0153] The operating device 1A is attached to one end of the head rail 101A in the longitudinal direction LR of the head rail 101A. The operating device 1A includes operating cords 16A, 17A used to raise and lower the upper curtain 12A and the lower curtain 13A, two cord pulleys that can wind and unwind the operating cords 16A, 17A, and a case 11A that houses the two cord pulleys and guides the operating cords 16A, 17A to the outside. The operating cords 16A, 17A hang down from the case 11A to the outside on the side opposite the case 11A in the short direction FB, which intersects the raising and lowering direction UD of the upper curtain 12A and the lower curtain 13A and intersects the longitudinal direction LR.

[0154] One end of operation cord 16A acts on a first drive device that raises and lowers upper curtain 12A, and one end of operation cord 17A acts on a second drive device that raises and lowers lower curtain 13A. In other words, by pulling operation cord 16A, intermediate rail 120A rises and lowers and upper curtain 12A folds, and by pulling operation cord 17A, bottom rail 130A rises and lowers and lower curtain 13A folds.

[0155] The cord guide members 40A, 50A are each provided on the front wall side of the indoor side (front side F) of the case 11A. The cord guide members 40A, 50A are provided at a distance from each other vertically in the lifting / lowering direction UD of the upper curtain 12A and the lower curtain 13A. The cord guide member 40A guides the operation cord 16A used to lift and lower the upper curtain 12A. The cord guide member 50A guides the operation cord 17A used to lift and lower the lower curtain 13A. The cord guide members 40A, 50A are provided at different height positions in the lifting / lowering direction UD.

[0156] The cord guide member 40A is located on the upper side U of the cord guide member 50A in the up-down direction UD, and on the front side F of the cord guide member 50A in the front-to-back direction FB. The front wall of the case 11A has a protruding portion 103A that protrudes toward the front side F at the end of the upper side U. The cord guide member 40A is located on the surface of the protruding portion 103A facing the lower side D. The cord guide member 50A is located on the surface facing the lower side D at the transition between the front wall and the lower wall of the case 11A.

[0157] The restricting members 18A and 19A are configured so that the bottoms thereof are directed obliquely downward D when the tip portions thereof are in contact with the cord guide members 40A and 50A. cormorant The bottoms of the restricting members 18A and 19A are located farther from the case 11A in the short-side direction FB than the tips of the restricting members 18A and 19A. In other words, the operating portions of the operating cords 16A and 17A hang down from the restricting members 18A and 19A at positions farther from the case 11A of the operating device 1A in the short-side direction FB. The operating cords are provided.

[0158] According to the operating device 1A of the second embodiment, the operating cords 16A and 17A are led out so as to be away from the case 11A. That is, the operating cords 16A and 17A hang down at positions away from the upper curtain 12A and the lower curtain 13A. Therefore, the operating grips 163A and 173A are prevented from interfering with the upper curtain 12A and the lower curtain 13A, and are prevented from being lifted when the upper curtain 12A and the lower curtain 13A are folded up.

[0159] <Third embodiment> A solar shading device 100B according to the third embodiment will be described below. Differences from the operating device 1 and solar shading device 100 according to the first embodiment will be mainly described below. Fig. 27 is a front view of the solar shading device according to the third embodiment. Fig. 28 is a side view of the solar shading device shown in Fig. 27.

[0160] The solar shading device 100B comprises a box-shaped head rail 101B, a curtain 12B supported along the longitudinal direction LR of the head rail 101B so as to be able to move up and down relative to an elevation shaft 112Bb rotatably supported on the head rail 101B, and an operating device 1B attached to the head rail 101B and having at least one cord pulley capable of winding and unwinding an operating cord 16B used to operate the raising and lowering of the curtain 12B. At least a portion of the operating cord 16B extending to the outside from the operating device 1B hangs down on the opposite side of the elevation shaft 112Bb in the longitudinal direction LR from the winding range of the operating cord 16B around the cord pulley.

[0161] The solar shading device 100B includes a box-shaped head rail 101B, one screen 12B, a lifting cord 14B, and an operating device 1B having an operating cord 16B.

[0162] Three winding drums (not shown) are provided inside the head rail 101B. The winding drums are arranged side by side along the longitudinal direction LR of the head rail 101B. The winding drums are connected to one another by lifting shafts (not shown). The lifting shafts are rotatably supported on the head rail 101B.

[0163] In the solar radiation shading device 100B, the number of winding drums in each winding drum is not particularly limited.

[0164] The head rail 101B is formed in the shape of a long box with an internal storage space. The head rail 101B has a bracket 102B. The head rail 101B is attached to an attachment target, such as a window frame or a wall around a window, via the bracket 102B. An operating device 1B, which will be described later, is attached to one end (the right side R in FIG. 28) in the longitudinal direction L of the head rail 101B. Note that the head rail 101B is not limited to being box-shaped, and the cross section along the short side direction FB may be I-shaped. The operating device 1B can also be attached inside the head rail 101B.

[0165] The curtain 12B hangs down from the head rail 101B on the front side F, which is the opposite side from the bracket 102B in the front-to-rear direction FB. The curtain 12B is wound up relative to the head rail 101A via three lifting cords 14B. One end of each lifting cord 14B is fixed to a respective winding drum 112Ba. The other end of each lifting cord 14B is attached to the lower end of the curtain 12B in the up-down direction UD via a cord adjuster 141B on the side of the curtain 12B facing the bracket 102B.

[0166] In the solar shading device 100B, the operating device 1B is attached, for example, to the end of the right side R of the head rail 101B. The operating device 1B raises and lowers the curtain 12B in response to operation of an operating cord 16B hanging down from the operating device 1B. The operating device 1B has an operating cord 16B, a regulating member 18B, one pulley operation drive unit (not shown), and one clutch unit (not shown). The configurations of the pulley operation drive unit and clutch unit of the operating device 1B are the same as those of the pulley operation drive unit and clutch unit in the first embodiment.

[0167] The operating device 1B is used to operate the raising and lowering of the front curtain 12B, which is supported so as to be freely raised and lowered on an elevating shaft 112Bb rotatably supported on a head rail 101B of the solar shading device 100B, and includes an operating cord 16B attached to the head rail 101B and used to operate the raising and lowering of the front curtain 12B, a cord pulley capable of winding and unwinding the operating cord 16B, and a case 11B that houses the cord pulley and guides the operating cord 16B to the outside. At least a portion of the operating cord 16B that extends to the outside from the case 11B hangs down on the side opposite the elevating shaft 112Bb in the longitudinal direction LR beyond the winding range of the cord pulley.

[0168] The operating cord 16B is used to drive the pulley operation drive unit of the operating device 1B to operate the raising and lowering of the curtain 12B. One end of the operating cord 16B is fixed to a cord pulley of the pulley operation drive unit. The operating cord 16B hangs down from the operating device 1B on the side opposite the curtain 12B in the front-to-rear direction FB, i.e., on the rear side B. The pulley drive operating unit is provided to operate the raising and lowering of the curtain 12B.

[0169] When the tip of restricting member 18B abuts against case 11B, axis x4 is inclined downward D in longitudinal direction LR. The bottom of restricting member 18B is located on the right side R of the tip. In other words, the position where operating cord 16B hangs down from restricting member 18B is on the opposite side of head rail 101 (right side R) from the position where operating cord 16B advances from case 11B.

[0170] According to the solar radiation shading device 100B as described above, the operator can easily hold the operation grip 163B of the operation cord 16B. [Explanation of symbols]

[0171] 1, 1A, 1B operating device, 11, 11A, 11B case, 12 front curtain (shielding material), 12A upper curtain (shielding material), 12B curtain (shielding material), 13 shielding material (rear curtain), 13A lower curtain (shielding material), 16, 17 operation cord (cord), 18, 18A, 18B, 19, 19A, 19B regulating member, 20, 30 pulley operation drive unit, 21, 31 cord pulley, 22, 32 one-way clutch device, 40, 50, 40A, 50A cord guide member, 60, 70 clutch unit, 100, 100A, 100B solar radiation shading device, 112b, 113b lifting shaft, 211, 311 winding range,

Claims

1. The solar shading device is used for lifting and lowering at least one shading material supported so as to be freely raised and lowered relative to a head rail of the solar shading device, attached to the head rail, At least one operating cord for operating the shielding material up and down; At least one cord pulley capable of winding and unwinding the operating cord; a case that houses the cord pulley and guides the operating cord to the outside; Equipped with the case has at least one guide portion that guides the operating cord diagonally downward with respect to the lifting direction of the shielding material and toward the side opposite to the head rail, the operating cord is led out from the case to the outside so as to leave the case on the opposite side of the case in a short direction that intersects with the direction of raising and lowering of the shielding material and with the longitudinal direction of the head rail, The guide portion is provided on the front wall side of the case, and is on a surface of the case that protrudes forward and faces downward. a restricting member attached to the operation cord to restrict the operation cord from being wound into the case; The regulating member has one end facing obliquely downward when the regulating member is in contact with the guide portion during the non-lifting operation of the shielding material. An operating device for a solar shading device.

2. two of the shielding members, two of the operating cords, two of the cord pulleys, and two of the guide portions are provided; The two guide portions are provided at an interval above and below in the lifting direction.

2. An operating device for a solar shading device according to claim 1.

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