JP7475235B2 - Sunshading device and operating device for a sunshading device - Google Patents

Description

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

Conventionally, a blind (sun shading device) is known that includes a rotating shaft for raising and lowering a shading material, a pulley that transmits rotation to the rotating shaft, an operating cord that is connected to the pulley so as to be capable of being wound and unwound and hangs down from a pulley housing section to operate the rotation of the pulley, a spring that biases the pulley in the winding direction of the operating (member) cord, and a clutch mechanism that can transmit the rotation of the pulley in only one direction to the rotating shaft (see, for example, Patent Document 1).

This blind is equipped with a brake that slows down the rotational speed of the pulley when biased by a spring. In addition, the operating cord is equipped with a stopper (restricting member) that restricts the operating cord from being wound around the pulley more than a specified amount.

JP 2017-198021 A

The invention described in Patent Document 1 is provided with a brake unit, which applies a brake to the winding of the operating cord to prevent the grip of the operating cord from jumping up. However, because the braking action of the brake unit always acts on the operating cord when winding the operating cord, the winding speed of the operating cord is slowed down.

In addition, it is not easy to adjust the spring force and the braking force of the brake unit so that the operating cord is completely wound up at the appropriate speed and by the specified amount. If the braking force is too strong, the operating cord may not retract by the specified amount.

The present invention was made in consideration of the above problems, and aims to provide a technology that prevents the operating grip from jumping up without impeding the rewinding of the operating cord.

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 the head rail, and an operating device attached to the head rail and having at least one cord pulley capable of winding and unwinding at least one operating cord used for raising and lowering the shading material, the operating device having a restricting member attached to the operating cord that restricts the operating cord from being wound into the operating device, and the restricting member is characterized in that a portion of the restricting member that comes into contact with the case of the operating device when the shading material is not being raised or lowered is elastically deformable.

Furthermore, in order to solve the above problems, the operating device according to the present invention is used for operating at least one shading material supported on the head rail of a solar shading device so that it can be raised and lowered freely, and includes at least one operating cord attached to the head rail and used for operating the shading material to raise and lower, 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, and a restricting member attached to the operating cord and restricts the operating cord from being wound into the case, and the restricting member is characterized in that a portion that comes into contact with the case when the shading material is not being operated to raise or lower is elastically deformable.

The present invention makes it possible to prevent the operating grip from jumping up without impeding the rewinding of the operating cord.

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 . FIG. 2 is a perspective view of an operating device in the solar shading device. FIG. FIG. 4 is a side view of the operating device as seen from the right side. 6 is a cross-sectional view of the operating device taken along line VI-VI in FIG. 3. FIG. 2 is an exploded perspective view of a pulley operation drive unit of the operating device. FIG. 2 is a perspective view for explaining the configuration of the case, as viewed obliquely from the upper right. 5A to 5C are diagrams for explaining the configuration of the 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. 9(c) is a cross-sectional view taken along line XX of FIG. 7 is a cross-sectional view taken along line XI-XI in FIG. 6. 6 is a cross-sectional view taken along line XII-XII in FIG. 5. 1A is a vertical cross-sectional view of the regulating member taken along the hanging direction of the operation cord, and FIG. 1B is an enlarged view of a portion XIII in FIG. 1A. 4A and 4B are diagrams for explaining the configuration of a cord pulley, in which FIG. 4A is a perspective view of the cord pulley as viewed from the right side, and FIG. 4B is a perspective view of the cord pulley as viewed from the left side. FIG. 2 is a diagram showing the operating device with the cover removed. 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 viewed from the right side, and FIG. 1B is a perspective view of the housing as viewed from the left side. FIG. 2 is a perspective view of a clutch unit of the operating device. FIG. 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. FIG. 4 is a development view of the cam drum showing the engaged state of the clutch unit. FIG. 4 is a development view of the cam drum showing a state in which the clutch unit is stopped from rotating (a clutch spring is in a slipping state). FIG. 13 is a development view of the cam drum showing a holding state in which the position of the front curtain is held. FIG. 11 is a front view of a solar shading device according to a second embodiment. FIG. 24 is a side view of the solar shading device shown in FIG. 23 . FIG. 11 is a front view of a solar shading device according to a third embodiment. FIG. 26 is a side view of the solar shading device shown in FIG. 25 .

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 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.

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, the left side in FIG. 1 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 shading materials 12, 13 hang down or rise up 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".

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

The solar shading device 100 according to the first embodiment includes a head rail 101, a shading material (hereinafter also referred to as "front curtain 12" and "rear curtain 13") supported along the longitudinal direction LR of the head rail 101 so as to be freely raised and lowered with respect to the head rail 101, and an operating device 1 having cord pulleys 21, 31 that are attached to the head rail 101 and can wind and unwind operation cords 16, 17 used for raising and lowering the front curtain 12 and the rear curtain 13. The operating device 1 has restricting members 18, 19 that are attached to the operation cords 16, 17 and restrict the operation cords 16, 17 from being wound up into the operating device 1, and the restricting members 18, 19 have elastically deformable tip portions (hereinafter also referred to as "tip portions") 183, 193 that come into contact with the case 11 of the operating device 1 when the front curtain 12 and the rear curtain 13 are not being raised or lowered. The configuration of the solar shading device 100 will be specifically described below.

The head rail 101 is formed in a long box shape 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). 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 on the lower side D of the winding drum 113a.

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 12 and rear curtain 13 are supported so that they can be raised and lowered 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 direction FB relative to the shielding material 13. The rear curtain 13 is located on the outdoor side B in the short direction FB relative to the front curtain 12.

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 respective winding 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.

The front curtain 12 rises when each lifting cord 14 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 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).

The rear curtain 13 rises when each lifting cord 15 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 each cord is unwound. Note that in FIG. 1, each lifting cord 15 cannot be seen because it overlaps with the lifting cord 14 of the front curtain 12 in the front-to-rear direction FB.

In this embodiment, the lifting cords 14, 15 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, 113a installed, etc.

Figure 3 is a perspective view of the operating device 1 in the solar shading device. Figure 4 is a front view of the operating device from the front side. Figure 5 is a side view of the operating device from the right side.

The operating device 1 according to the present invention is used for operating the front curtain 12 and the rear curtain 13 supported on the head rail 101 of the solar shading device 100 so that they can be raised and lowered, and includes operating cords 16, 17 attached to the head rail 101 and used for operating the front curtain 12 and the rear curtain 13, cord pulleys 21, 31 capable of winding and unwinding the operating cords 16, 17, a case 11 that houses the cord pulleys 21, 31 and guides the operating cords 16, 17, and restricting members 18, 19 attached to the operating cords 16, 17 and restricts the operating cords 16, 17 from being wound into the case 11. The restricting members 18, 19 have elastically deformable tips 183, 193 that come into contact with the case 11 of the operating device 1 when the front curtain 12 and the rear curtain 13 are not being raised or lowered.

The restricting members 18, 19 also have cylindrical elastically deformable cover parts (hereinafter also referred to as "joint cover parts") 181, 191 with one end closed, and columnar joint parts 182, 192 that are inserted into the joint cover parts 181, 191 and can engage with the joint cover parts 181, 191 on the inner surface of the joint cover parts 181, 191. In the insertion direction In of the joint parts 182, 192 into the joint cover parts 181, 191, a clearance C is provided between the joint cover parts 181, 191 that come into contact with the case 11 and the tips of the columnar joint parts 182, 192.

The joint cover parts 181, 191 are formed cylindrically and have a reduced diameter toward the tip in the insertion direction In.

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 the operating 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 operating cords 16, 17, and regulating members 18, 19.

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

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

The pulley operation drive units 20, 30 are arranged side by side in the vertical direction UD. The pulley operation drive unit 20 is located below the pulley operation drive unit 30 in the vertical direction UD. The pulley operation drive unit 30 is located above the pulley operation drive unit 20 in the vertical direction UD. The pulley operation drive units 20, 30 rotate in different directions R1, R2 when the front curtain 12 and rear curtain 13 are raised and lowered by pulling the operating cords 16, 17.

The pulley operation drive unit 20 is provided for raising and lowering the front curtain 12. The pulley operation drive unit 30 is provided for raising and lowering the rear curtain 13. The pulley operation drive units 20, 30 are housed in a common case 11. The pulley operation drive units 20, 30 each have a cord pulley 21, 31 and a one-way clutch device 22, 32.

Figure 8 is an oblique view for explaining the configuration of the case, and shows the case 11 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 that they can rotate together around the same rotation axis x1. In addition, 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 that they can rotate together around the same rotation axis x2.

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.

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 fore-aft direction FB. The rear wall 113 is located on the side where the bracket 102 is attached, facing the front wall 112 in the fore-aft 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).

A recess 117 is formed in the bottom wall 115 on the side opposite 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.

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 opposing surfaces of the front wall 112 and the protruding section 115a each have a guide strip 115b. In the storage section 117B, the opposing surfaces of the rear wall 113 and the protruding section 115a each have a guide strip 115c. The guide strips 115b, 115c extend in the longitudinal direction LR.

The case 11 further has two cord guide members (guide sections) 40, 50. The cord guide members 40, 50 are attached to the case 11 at the recess 117 of 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 recess 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, so the configuration will be described below using the cord guide member 40 as an example.

Figure 9 is a diagram for explaining the configuration of the cord guide member, where (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 is a cross-sectional view taken along line X-X in Figure 9(c). The cord guide member 40 is a rectangular tubular member that is roughly square in plan view. The cord guide member 40 has a guide hole 41, an engagement recess 42, and an inclined portion 43.

When the cord guide member 40 is attached to the case 11, the guide hole 41 extends along an axis x3 that extends in the up-down direction UD. The winding portion 161 of the operating cord 16, which will be described later, is led out to the outside of the case 11 through the guide hole 41.

The engagement recess 42 engages with the guide strip 115c in the accommodation portion 117F of the recess 117 in the lower 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.

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

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. FIG. 11 is a cross-sectional view taken along line XI-XI in FIG. 6. The cord guide member 40 for the operation cord 16 connected to the front curtain 12 is located on the front curtain 12 side in the front-to-rear direction (short side direction) FB relative to 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 relative to the cord guide member 50 in the front-to-rear direction FB. As a result, when the operator wishes to raise or lower the front curtain 12, he or she can raise or lower the front curtain 12 without making a mistake by selecting and pulling the operation cord 16 located relatively on the front side F.

Similarly, the cord guide member 50 that guides the operating cord 17 for operating the rear curtain 13, located on the rear side B in the front-to-rear direction FB, inward and outward from the operating device 1, is located on the rear side B relative to the cord guide member 40 that guides the operating cord 16 for operating the front curtain 12, located on the front side F in the front-to-rear direction FB, inward and outward from the operating device 1. As a result, when it is desired to raise or lower the rear curtain 13, the operator can raise or lower the rear curtain 13 without making a mistake by selecting and pulling the operating cord 17 that is relatively on the rear side B.

In this 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 at positions spaced apart from each other in the front-to-rear direction FB of the bottom wall 115.

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.

The operating cords 16, 17 are fitted with restricting members 18, 19 that restrict the operating cords 16, 17 from being wound up inside the case 11. The operating cords 16, 17 have cylindrical operating grips 163, 173. The operating grips 163, 173 are attached to the ends of the operating sections 162, 172 of the operating cords 16, 17 on the sides that are not fixed to the restricting members 18, 19 (see FIG. 2). Note that the operating cords 16, 17 have the same configuration, so the configuration will be described below using the operating cord 16 as an example.

Figure 12 is a cross-sectional view taken along line XII-XII in Figure 5. Figure 13 is a diagram for explaining the configuration of the regulating member, where (a) is a vertical cross-sectional view of the regulating 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 winding section 161 and an operating section 162. The winding section 161 and the operating section 162 are connected to each other by the regulating member 18.

The regulating members 18, 19 are attached to the operating cords 16, 17 and come into contact with the case 11 when the front curtain 12 and rear curtain 13 are not being raised or lowered, thereby regulating the operating cords 16, 17 from being wound into the case 11. The regulating members 18, 19 come into contact with the case 11 at the tips 183, 193 when the front curtain 12 and rear curtain 13 are not being raised or lowered. The bottoms 187, 197 of the regulating members 18, 19 are located on the opposite side (right side R) from the head rail 101 in the longitudinal direction LR relative to the tips 183, 193. Note that the regulating members 18, 19 have the same configuration, so the configuration will be described below using the regulating member 18 as an example.

The restricting member 18 has a joint cover part 181 and a joint part 182. The joint cover part 181 and the joint part 182 are engaged with each other.

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

The joint cover part 181 is a generally conical cylindrical member formed from an elastic material such as rubber. The joint cover part 181 may be formed from any material that is elastically deformable. The joint cover part 181 is closed by the tip part 183 on the side that contacts the case 11, and is open on the base end side.

The joint cover part 181 is formed so as to taper toward the tip part 183 along an axis x4 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.

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

The columnar portion 186 has a through hole 188 and a protrusion portion 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 portion 189 is formed to protrude outward. The protrusion portion 189 extends in the circumferential direction on the side of the bottom portion 187. The protrusion portion 189 engages with the groove 185 of the joint cover portion 181.

The bottom portion 187 is formed integrally with the columnar portion 186 on the side opposite 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.

The hole 184 in the joint cover part and the through hole 188 in 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 winding part 161 of the operating cord 16 is inserted through the hole 184 and the upper through hole 188. The winding part 161 has a knot at its end within the restricting member 18, and this knot prevents it from slipping out of the hole 184 and the upper through hole 188 (see FIG. 12).

When the joint cover part 181 and the joint part 182 are 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 within the restricting member 18, and this knot prevents it from slipping out of the through hole 188.

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

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

Figure 14 is a diagram for explaining the configuration of the cord pulley, where (a) is a perspective view of the cord pulley as viewed from the right side R, and (b) is a perspective view of the cord pulley as viewed from the left side L. The cord pulleys 21 and 31 are supported rotatably between inner plates 80 and 90, which will be described later. One end of the operating cord 16 is fixed to the cord pulley 21. One end of the operating cord 17 is fixed to the cord pulley 31. The operating cords 16 and 17 are wound around the outer circumferential surfaces of the cord pulleys 21 and 31. The operating cords 16 and 17 are wound around the outer circumferential surfaces of the cord pulleys 21 and 31 in a predetermined range (winding range) 211 and 311 along the rotation axes x1 and x2.

The guide holes 41, 51 through which the cord guide members 40, 50 guide the operating cords 16, 17 in and out 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 the lower side D relative to the cord pulley 31 in the vertical direction UD. The cord pulley 31 is positioned on the upper side U relative to the cord pulley 21 in the vertical direction UD. The cord pulleys 21, 31 have cylindrical winding portions 212, 312 and columnar locking portions 213, 313. Note that the cord pulleys 21, 31 have the same configuration, so the configuration will be described below using the cord pulley 21 as an example.

The winding portion 212 has a diameter larger than the diameter of the locking portion 213. The cord pulley 21 is partially supported by the inner plate 80 (described later) at the winding portion 212 so as to be rotatable along the rotation axis x1.

One end of the winding part 212, to which the mainspring 23 described later is attached, is closed by a locking part 213, and the other end is open. The winding part 212 has two flanges 214. The flanges 214 are provided along the axis x1 with a space therebetween of the winding range 211. The flanges 214 protrude in an annular shape radially outward from the outer circumferential surface of the winding part 212.

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.

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 along the radial direction and the extension direction of the locking portion 213.

The inner plate 80 has two accommodating holes 81, 82 aligned in the up-down direction UD. The accommodating hole 81 is located on the lower side D of the accommodating hole 82 in the up-down direction UD. The accommodating hole 81 supports the cord pulley 21 so that it can rotate in the winding section 212. The accommodating hole 82 is located on the upper side U of the accommodating hole 81 in the up-down direction UD. The accommodating hole 82 supports the cord pulley 31 so that it can rotate in the winding section.

The operating device 1 further includes a roller 85 between the inner plates 80 and 90. The roller 85 guides the operating cord 17 wound around the cord pulley 31 for raising and lowering the rear 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.

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 that it can rotate around an axis extending along 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 extension direction of the operating cord 17 hanging down from the cord pulley 31 faces the rear wall 113. As a result, below the roller 85, on the side D, the operating cord 17 passes outside of the operating cord 16 wound around the cord pulley 21 (see FIG. 11).

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.

The power springs 23, 33 are engaged with the cord pulleys 21, 31, which can rotate freely to wind and unwind the operating cords 16, 17. The power springs 23, 33 bias the cord pulleys 21, 31 so as to wind the operating cords 16, 17 onto the cord pulleys 21, 31.

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

The inner plate 90 has two storage sections 91, 92 arranged vertically in the vertical direction UD. Storage section 91 is located on the lower side D of storage section 92 in the vertical direction UD. Storage section 91 stores the spiral spring 23. Storage section 92 is located on the upper side U of storage section 91 in the vertical direction UD. Storage section 92 stores the spiral spring 33.

The storage sections 91, 92 are defined by walls 911, 921 that protrude from the flat portion of the inner plate 90 toward the cover 116. The walls 911, 921 are formed with slits 912, 922, respectively. The slit 912 of the wall 911 is formed on the lower side D of the wall 911 of the storage section 91 in the vertical direction UD. The slit 922 of the wall 921 is formed on the upper side U of the wall 921 of the storage section 92 in the vertical direction UD.

The engaging portions 231, 331 of the spiral springs 23, 33 are engaged with the walls 911, 921 at the slits 912, 922 of the housings 91, 92, respectively. 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.

The one-way clutch devices 22, 32 are provided between the cord pulleys 21, 31 and the clutch units 60, 70 along the axes x1, x2, 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 (Figure 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.

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

The one-way clutch device 22, 32 has a housing 221, 321 and a one-way clutch 227, 327 (see FIG. 7). Note that the housings 221, 321 have the same configuration, so the following description will use the housing 221 as an example to explain its configuration.

Figure 16 is a perspective view for explaining the configuration of the housing of the one-way clutch device, where (a) is a perspective view of the housing seen from the right side, and (b) is a perspective view of the housing 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.

In the direction of insertion into the cord pulley 21, the steps 222, 223, and 224 are provided in this order. The outer diameter of the housing 221 increases in the order of the steps 222, 223, and 224.

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 protrusions 215 of the cord pulley 21 in the circumferential direction at the protrusions 225.

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 the one-way clutch 227, which will be described later.

The one-way clutch 227, 327 engages with the inner peripheral surface of the housing 221, 321 at its outer peripheral surface. The one-way clutch 227, 327 cannot rotate relative to the housing 221, 321. The one-way clutch 227, 327 transmits only the rotation of the operating cord 16, 17 in the pull-out direction to the lift shaft 112b, 113b via the clutch units 60, 70. The one-way clutch 227, 327 is press-fitted into the housing 221, 321, so that it can rotate integrally with the housing 221, 321.

The one-way clutch 227, 327 is formed in a disk shape. The one-way clutch 227, 327 is housed in the housing 221, 321. The one-way clutch 227, 327 has a hole in the center and three recesses on the outer circumferential surface. The drive shaft 611, 711 of the clutch unit 60, 70 described later is inserted into the hole of the one-way clutch 227, 327 so as not to rotate relative to the clutch.

The recesses extend along the axes x1, x2 on the outer peripheral surface and are provided at equal intervals in the circumferential direction. The recesses are semicircular recesses from the outer peripheral surface toward the axes x1, x2. The one-way clutch 227 engages with the protrusion 226 of the housing 221 at the recesses so that it cannot rotate relative to the housing. The one-way clutch 327 engages with the protrusion 321 at the recesses so that it cannot rotate relative to the housing.

When the one-way clutch devices 22, 32 are inserted into the cord pulleys 21, 31, a space SP is provided between the cord pulleys 21, 31 and the one-way clutch devices 22, 32 in the rotational directions R1, R2 to allow the cord pulleys 21, 31 to rotate freely relative to the one-way clutch devices 22, 32 when the front curtain 12 and rear curtain 13 are switched between a lifting operation state and a non-lifting operation state. The cord pulleys 21, 31 rotate so that the convex portions 215, 315 come into contact with the convex portions 225, 325 of the one-way clutch devices 22, 32, causing the one-way clutch devices 22, 32 to rotate.

Figure 17 is a perspective view of the clutch unit of the operating device. Figure 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.

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

The clutch units 60, 70 are connected to the one-way clutch devices 22, 32 of the pulley operation drive units 20, 30, respectively. The clutch units 60, 70 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 20, 30, 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 22, 32 of the pulley operation drive units 20, 30. The drive shaft 611 rotates in a first rotation direction (e.g., counterclockwise as seen from the pulley operation drive units 20, 30) R1 by pulling the operation cord 16 in one direction. The drive shaft 711 rotates in a second rotation direction (e.g., clockwise as seen from the pulley operation drive units 20, 30) R2 by pulling the operation cord 17 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 unit 20, 30.

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 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 on the pulley operation drive unit 20, 30 side. 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 on the drive shaft 611, 711 side. 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 20, 30 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 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 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, 741 is formed on the inner surface of the clutch case 64, 74 (see Figure 6). The clutch balls 65, 75 are accommodated in the cam grooves 630, 730 and the retaining grooves 641, 741 so that they can roll.

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 will be explained below using cam drum 63 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 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 balls 65, 75 move relative to the cam drum 63 and reach this position, the meshing portion 632 transmits the clutch units 60, 70.

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 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 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 released, the clutch ball 65 enters the holding portion 634, and the rotation of the cam drum 63 in the second rotation direction R2 based on the descent of the front curtain 12 due to its own weight is restricted, and the front curtain 12 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 60 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 60 performs a release operation of 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 units 60, 70 in the solar shading device 100 will be described using Figures 19 to 22. The operation of the clutch units 60, 70 is the same except for the direction of rotation, so the operation will be described below using the clutch unit 60 as an example. Figure 20 shows the clutch unit in an engaged state. Figure 21 shows the clutch unit in a rotation-stopped state (clutch spring slip state). Figure 22 shows a retained state in which the position of the front curtain is retained.

First, we will explain the operation of the clutch unit 60 when raising the front curtain 12 in the solar shading device 100.

For example, before the start of operation, the clutch unit 60 is in a disengaged state. That is, before the start of operation, as shown in FIG. 19, 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. 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.

When the operating cord 16 is pulled in one direction, the cord pulley 21 rotates in the first rotation direction R1. This rotation is transmitted to the drive shaft 611 of the transmission side rotating part 61 in the clutch unit 60 via the one-way clutch device 22. 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 Figure 19, 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 Figure 19).

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.

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 x2 together with the cam drum 63, also moves toward the tip along the axis x2 and meshes with the transmission side meshing plate 622 as shown in FIG. 20. In this state, the clutch unit 60 is in an engaged 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 12.

If the operating cord 16 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. 21. Then, the clutch ball 65 is restrained at the stop portion 633, so the rotation of the cam drum 63 is restrained and stopped.

In this state, if the operating cord 16 is continued to be operated to rotate the drive shaft 611 and the clutch spring cylinder 612 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 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.

When the front curtain 12 is raised (wound up) to the desired height and the operation cord 16 is no longer pulled in one direction to stop the operation, the weight of the front curtain 12 causes the lifting shaft 112b to rotate in the opposite direction to the winding direction, i.e., in the second rotation direction R2. The cam drum 63 further rotates in the second rotation direction R2 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. 22, and the rotation of the cam drum 63 in the second rotation direction R2 caused by the front curtain 12 descending under its own weight is stopped. This allows the front curtain 12 to be held at the desired height position.

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 it, 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 the branch point B with the main release groove 635 or to a position beyond branch point B.

When the operation cord 16 is no longer 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 the cam drum 63 rotates 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.

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 x2 is restricted at the tip of the retaining groove 641, so the cam drum 63 moves toward the base end.

As shown in FIG. 19, 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 12 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 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.

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. 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.

When the operation of the operating cord 16 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 transmission side meshing disk 622 of the transmission side rotating part 62 is released, just as when the clutch ball 65 enters the main release groove 635 (see Figure 19).

According to the solar radiation shading device 100 described above, the joint cover parts 181, 191 of the regulating members 18, 19 are formed of an elastic material, so that when the operating cords 16, 17 are pulled and then released, the lifting shafts 112b, 113b rotate due to the weight of the front curtain 12 and the rear curtain 13. Meanwhile, the operating cords 16, 17 are wound around the cord pulleys 21, 31 by the spiral springs 21, 31. As the operating cords 16, 17 are wound, the regulating members 18, 19 also rise. However, even if the regulating members 18, 19 come into contact with the case 11, the joint cover parts 181, 191 deform when they come into contact with the case 11, so that the impact at the time of contact can be reduced. Therefore, the contact sound when coming into contact with the case 11 is suppressed and the operating grips 163, 173 are prevented from jumping up.

Furthermore, because clearance C is provided between the tip portions 183, 193 of the joint cover portions 181, 191 and the tip portions of the joint portions 182, 192, the deformation of the joint cover portions 181, 191 by the joint portions 182, 192 is not obstructed. In other words, clearance C allows deformation and displacement of the joint cover portions 181, 191 toward the joint portions 182, 192, which is even more advantageous in mitigating impacts during contact.

Furthermore, because the joint cover parts 181, 191 are formed in a cone shape, they are less likely to become pinched between the front curtain 12 and the rear curtain 13 and, for example, a window frame, etc.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the first embodiment described above, 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 embodiment may be appropriately changed depending on the specific use mode of the present invention. For example, in the above embodiment, the pulley operation drive unit 20 arranged on the lower side is for operating the front curtain 12, and the pulley operation drive unit 30 arranged on the upper side is for operating the rear curtain 13, but the pulley operation drive unit 20 arranged on the lower side may be for operating the rear curtain 13, and the pulley operation drive unit 30 arranged on the upper side may be for operating the front curtain 12.

In addition, in the above embodiment, the pulley operation drive units 20, 30 are arranged side by side in the up-down direction UD, but they may also be arranged side by side in the front-to-rear direction FB.

Second Embodiment
The following describes a solar shading device 100A according to the second embodiment. The following mainly describes the parts that are different from the operating device 1 and the solar shading device 100A according to the first embodiment. Fig. 23 is a front view of the solar shading device according to the second embodiment. Fig. 24 is a side view of the solar shading device shown in Fig. 23.

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

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

The solar shading device 100A according to the second embodiment includes a head rail 101A, an upper curtain 12A and a lower curtain 13A supported along the longitudinal direction LR of the head rail 101A so as to be freely raised and lowered with respect to the head rail 101A, and an operating device 1A attached to the head rail 101A and having a cord pulley capable of winding and unwinding operation cords 16A and 17A used for raising and lowering the upper curtain 12A and the lower curtain 13A. The operating device 1A has restricting members 18A and 19A attached to the operation cords 16A and 17A and restricting the operation cords 16A and 17A from being wound up into the operating device 1A, and the restricting members 18A and 19A have elastically deformable tips that come into contact with the case 11A of the operating device 1A when the upper curtain 12A and the lower curtain 13A are not being raised or lowered.

The head rail 101A is formed in a long box shape 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 of the head rail 101A in the longitudinal direction L (the right side R in FIG. 23). The head rail 101A 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 1A can also be attached to the inside of the head rail 101A.

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

In this embodiment, the lifting cords 14A, 15A hang down from two points, but they may 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.

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

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 middle rail 120A. The upper curtain 12A is formed in a pleated shape that can be folded in the vertical direction UD, and two lifting cords 14A are inserted in the vertical direction UD.

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 vertical direction UD, and two lifting cords 15A are inserted in the vertical direction UD.

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

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 the operating cords 16A and 17A hanging down from the operating device 1A. The operating device 1A has operating cords 16A and 17A, regulating members 18A and 19A, two pulley operation drive units (not shown), and two clutch units (not shown). Note that the configurations of the operating cords 16A and 17A, regulating members 18A and 19A, pulley operation drive units, and clutch units in the second embodiment are the same as the configurations of the operating cords 16 and 17, regulating members 18 and 19, pulley operation drive units 20 and 30, and clutch units 60 and 70 in the first embodiment, respectively.

The solar shading device 100A according to the second embodiment can achieve the same effects as the solar shading device 100 according to the first embodiment.

Third Embodiment
A solar shading device 100B according to the third embodiment will be described below. The following mainly describes the differences from the operating device 1 and the solar shading device 100 according to the first embodiment. Fig. 25 is a front view of the solar shading device according to the third embodiment. Fig. 26 is a side view of the solar shading device shown in Fig. 25.

The solar shading device 100B comprises a box-shaped head rail 101B, one curtain 12B, a lifting cord 14B, and an operating device 1B having an operating cord 16B.

The solar shading device 100B according to the third embodiment includes a head rail 101B, a curtain 12B supported along the longitudinal direction LR of the head rail 101B so as to be freely raised and lowered with respect to the head rail 101B, and an operating device 1B attached to the head rail 101B and having a cord pulley capable of winding and unwinding an operating cord 16B used for raising and lowering the curtain 12B. The operating device 1B has a restricting member 18B attached to the operating cord 16B and restricting the operating cord 16B from being wound into the operating device 1B, and the tip of the restricting member 18B that comes into contact with the case 11B of the operating device 1B when the curtain 12B is not being raised or lowered is elastically deformable.

Three winding drums 112Ba are provided inside the head rail 101B. The winding drums 112Ba are arranged side by side along the longitudinal direction LR of the head rail 101B. The winding drums 112Ba are connected to each other by lifting shafts 112Bb. The lifting shafts 112Bb are rotatably supported on the head rail 101B.

In addition, in the solar radiation shading device 100B, the number of winding drums 112Ba in each winding drum 112Ba is not particularly limited.

The head rail 101B is formed in a long box shape 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 of the head rail 101B in the longitudinal direction L (the right side R in FIG. 25). Note that the head rail 101B 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 1B can also be attached inside the head rail 101B.

The curtain 12B hangs down from the head rail 101B on the front side F, which is the side opposite 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 each 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.

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 the 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 operating drive unit (not shown), and one clutch unit (not shown).

The operation cord 16B is used to drive the pulley operation drive unit of the operation device 1B to operate the raising and lowering of the curtain 12B. One end of the operation cord 16B is fixed to the cord pulley of the pulley operation drive unit. The operation cord 16B hangs down from the operation device 1B on the side opposite the curtain 12B in the front-to-rear direction FB, that is, on the rear side B. The pulley drive operation unit is provided for raising and lowering the curtain 12B. The configurations of the operation cord 16B, regulating member 18B, pulley operation drive unit, and clutch unit of the operation device 1B are the same as the operation cords 16, 17, regulating members 18, 19, pulley operation drive units 20, 30, pulley operation drive units 20, 30, and clutch units 60, 70 in the first embodiment, respectively.

The solar shading device 100B described above can achieve the same effects as the solar shading device 100 according to the first embodiment.

1, 1A, 1B Operating device, 11 Case, 12 Front curtain (shielding material), 12A Upper curtain (shielding material), 12B Curtain (shielding material), 13 Rear curtain (shielding material), 13A Lower curtain (shielding material), 16, 16A, 16B, 17, 17A Operating cord, 18, 18A, 18B, 19, 19A, 19B Regulating member, 181, 191 Joint cover part (cover part), 182, 192 Joint part, 183, 193 Tip part (part in contact with case), 20, 30 Pulley operation drive unit, 21, 31 Cord pulley, 100, 100A, 100B Sunshade device, C Clearance

Claims (3)

A box-shaped head rail and
At least one shielding material supported along the longitudinal direction of the head rail so as to be movable up and down relative to the head rail;
An operating device attached to the head rail and having at least one cord pulley capable of winding and unwinding at least one operating cord used for raising and lowering the shielding material;
Equipped with
the operating device has a restricting member attached to the operating cord and restricting the operating cord from being wound up inside the operating device,
The restricting member has a portion that contacts a case of the operating device when the shielding material is not being raised or lowered, and the restricting member is elastically deformable at the portion,
The regulating member is
A cylindrical elastically deformable cover part having one end closed;
a columnar joint portion that can be inserted into the cover portion and engaged with the cover portion;
having
a clearance is provided between the cover portion that comes into contact with the case and a tip of the columnar joint portion in an insertion direction of the joint portion into the cover portion . 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 lifting and lowering the shielding material;
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;
a restricting member attached to the operation cord and restricting the operation cord from being wound up into the case;
Equipped with
the restricting member has a portion that comes into contact with the case when the shielding material is not being raised or lowered, the restricting member being elastically deformable;
The regulating member is
A cylindrical elastically deformable cover part having one end closed;
a columnar joint portion that can be inserted into the cover portion and engaged with the cover portion;
having
an operating device for a solar shading device , wherein a clearance is provided between the cover part that comes into contact with the case and a tip of the columnar joint part in an insertion direction of the joint part into the cover part . 3. The operating device for a solar shading device according to claim 2 , wherein the cover portion is formed in a cylindrical shape, and a diameter of the cover portion decreases toward a tip end in the insertion direction.

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