JPWO2015012266A1 - Solar shading device - Google Patents

Abstract

The guide rail includes a front-side passage forming member (23F) and a rear-side passage forming member (23B) that are two passage forming members facing each other with the outer edge portion (13E) of the shielding member (13) interposed therebetween. At least one of the two passage forming members is a space between the two passage forming members, a first position that allows the outer edge portion (13E) of the shielding material (13) to move up and down, and the outer edge portion of the shielding material (13). It is a movable part displaced to the 2nd position which raises the press to (13E) rather than the 1st position. The movable part is disposed at a position where it can come into contact with the shielding material (13) in the middle of the space between the two passage forming members, and follows the shielding material (13) in the middle of the space to deviate from the first position. To the second position.

Description

  The present disclosure relates to a solar radiation shielding device including a shielding material.

  In the roll screen which is an example of the solar radiation shielding device, the screen wound on the winding shaft is lowered by the drawing operation, and the screen drawn from the winding shaft is raised by the winding operation. The guide rail provided in the roll screen usually has a shape extending along the up-and-down direction of the screen, and the outer edge portion of the screen drawn out from the winding shaft enters the inside of the guide rail. When the screen is lowered and when the screen is raised, the outer edge portion of the screen moves along the guide rail, whereby the screen is guided along the ascending / descending direction (see, for example, Patent Document 1).

JP 2008-101368 A

By the way, when a pressure difference occurs between two spaces defined by the screen, an external force from the high pressure side space toward the low pressure side space acts on the entire screen.
For example, when a screen partitions a space with a high degree of cleanliness and a space with a low degree of cleanliness, the screen protrudes into a space with a low degree of cleanliness due to a pressure difference between a space with a high degree of cleanness and a space with a low degree of cleanliness. The entire screen receives such external force.

  As a result, the outer edge portion of the screen that has been in the guide rail is detached from the guide rail due to a high pressure difference, and the subsequent screens may not be guided by the guide rail. Then, it is not easy to return the screen once removed from the guide rail to the guide rail.

  The problem that the outer edge portion of the screen comes out of the passage is a problem that occurs not only in the pressure difference between two spaces defined by the screen but also when an external force acts on the drawn screen. Furthermore, such a problem occurs similarly in a vertical screen, a pleated screen, and a blind device in addition to a horizontal screen, and in a solar radiation shielding device including a shielding material to be held in a predetermined position. This is a common issue.

  The objective of this indication is providing the solar radiation shielding apparatus which suppresses that the outer edge part of a shielding material suppresses displacement.

  One aspect of the solar radiation shielding device of the present disclosure includes a shielding material and a clamping portion capable of sandwiching the outer edge portion of the shielding material, and the clamping portion is a space between the outer edge portion and the outer edge portion. A movable portion that is displaced to a first position that allows movement and a second position that increases a holding force with respect to the outer edge portion to be higher than the first position, and the movable portion is in the middle of deviating from the space. And is displaced from the first position to the second position following the shielding material in the middle of deviating from the space.

  In another aspect of the solar shading device of the present disclosure, the solar radiation shielding device further includes a guide rail that has a shape extending along one extending direction and guides the outer edge portion along the extending direction. The sandwiching portion is composed of two passage forming members, at least one of the two passage forming members is the movable portion, and the two passage forming members are in the extending direction at the first position. Guide the movement of the outer edge along.

In another aspect of the solar radiation shielding apparatus of the present disclosure, it is preferable that the movable portion increases the holding force by pressing the shielding material at the second position.
In another aspect of the solar shading device of the present disclosure, the movable portion is a cam having a cam surface that rotates about an axis, and a portion of the cam surface that faces the outer edge portion In the state where the cam surface rotates from the first position and is positioned at the second position, the counter portion and the shaft are opposed to each other than the state where the cam surface is positioned at the first position. It is preferable that the distance between is large.

  In another aspect of the solar shading device of the present disclosure, the movable portion includes an input end that is coupled to the cam surface and inputs a rotational force to the cam surface, and the input end is configured with respect to the cam surface. The shielding material that is located on the center side of the shielding material and forms a part that contacts the shielding material in the middle of the space, and moves in a direction intersecting the surface direction of the shielding material, the shielding material moving the input end It is preferable that the cam surface is displaced from the first position to the second position by pushing.

  In another aspect of the solar shading device of the present disclosure, the facing portion constitutes a portion that contacts the shielding material on the way out of the space, and the outer edge portion and the facing portion on the way out of the space And follow the outer edge by friction.

In another aspect of the solar shading device of the present disclosure, the cam surface is preferably an uneven surface that is a repetition of a protrusion protruding toward the outer edge.
In another aspect of the solar radiation shielding apparatus of the present disclosure, the movable portion is an elastic body that elastically deforms following the shielding material by friction with the outer edge portion in the middle of deviating from the space, and is due to elastic deformation. It is preferable that the outer edge is pressed by an elastic force.

  In another aspect of the solar shading device of the present disclosure, the two passage forming members may be one passage portion, and the guide rail may include a plurality of the passage portions arranged along the extending direction. preferable.

  In another aspect of the solar radiation shielding device of the present disclosure, when the movable part is located at the second position, the movable part is applied with a tension exceeding a frictional force caused by pressing against the outer edge part. Accordingly, it is preferable to allow the shielding material to deviate from the space.

  According to the solar radiation shielding apparatus of this indication, it is suppressed that the outer edge part of a shielding material remove | deviates from a guide rail.

It is a front view which shows the front structure of the roll screen in 1st Embodiment which actualized the solar radiation shielding apparatus of this indication in the roll screen. It is a side view which shows the side structure of the roll screen in 1st Embodiment. It is a partial side view which expands and shows a part of side structure of the guide rail in 1st Embodiment. It is a top view which shows the planar structure of the channel | path formation member in 1st Embodiment with a screen. It is a top view which shows the effect | action of the channel | path formation member in 1st Embodiment, Comprising: It is a figure which shows the state in the middle of the outer edge part of a screen coming out from the space between channel | path formation members. It is a top view which shows the planar structure of the channel | path formation member in 2nd Embodiment with a screen. It is a top view which shows the effect | action of the channel | path formation member in 2nd Embodiment, Comprising: It is a figure which shows the state in the middle of the outer edge part of a screen coming out from the space between channel | path formation members. It is a top view which shows the planar structure of the channel | path formation member in 3rd Embodiment with a screen. It is a fragmentary top view which expands and shows a part of planar structure of the channel | path formation member in 3rd Embodiment with a screen. It is a top view which shows the effect | action of the channel | path formation member in 3rd Embodiment, Comprising: It is a figure which shows the state which the outer edge part of a screen begins to slip out of the space between channel | path formation members. It is a top view which shows the effect | action of the channel | path formation member in 3rd Embodiment, Comprising: It is a figure which shows the state in the middle of the outer edge part of a screen coming out from the space between channel | path formation members. It is a partial front view which shows a part of front structure of the guide rail in the roll screen of a modification. It is a front view which shows the front structure of the roll screen in 4th Embodiment, Comprising: It is a figure which notches and shows a part of guide rail in order from the front side. It is a front view which shows the front structure of the solar radiation shielding apparatus in a modification, Comprising: It is a figure which notches and shows a part of guide rail in order from the front side. It is a front view which shows the front structure of the vertical screen in 5th Embodiment which actualized the solar radiation shielding apparatus of this indication in the vertical screen, Comprising: It is a figure which notches and shows a part of guide rail in order from the front side. It is a front view which shows the front structure of the solar radiation shielding apparatus in a modification, Comprising: It is a figure which notches and shows a part of guide rail in order from the front side. It is sectional drawing which shows the side cross-section of the channel | path formation member in the modification which materialized the solar radiation shielding apparatus of this indication in the double vertical screen.

[First Embodiment]
A roll screen according to a first embodiment in which the solar radiation shielding device of the present disclosure is embodied as a roll screen will be described with reference to FIGS. 1 to 5.

[Roll screen configuration]
As shown in FIG. 1, the frame 11 provided in the roll screen supports the winding shaft 12 extending in the left-right direction in a state where it can rotate. The winding shaft 12 is an example of a shielding material, and supports an upper end portion of a screen 13 having a rectangular shape along the axial direction of the winding shaft 12. The lower end of the screen 13 is separated from the outer peripheral surface of the winding shaft 12 and hangs down by its own weight toward the lower side in the vertical direction, which is an example of the opening / closing direction and an example of the lifting / lowering direction. The lower end of the screen 13 preferably has a weight bar 14 extending along the left-right direction, and the weight bar 14 stabilizes the position of the screen 13 along the up-and-down direction. In the configuration in which the lower end portion of the screen 13 includes the weight bar 14, the length LW along the left-right direction of the weight bar 14 is shorter than the length LS along the left-right direction of the screen 13.

  The winding shaft 12 is connected to an operation chain 15 that is an example of an operation unit through a rotation mechanism that rotates the winding shaft 12. The winding shaft 12 is rotated forward by a winding operation of the operation chain 15 and is reversed by a drawing operation of the operation chain 15. The winding shaft 12 that rotates forward winds the screen 13 around the winding shaft 12 along the circumferential direction of the winding shaft 12, and the winding shaft 12 that rotates backward rotates the screen 13 wound around the winding shaft 12. Pull out from the winding shaft 12. The mechanism that rotates the winding shaft 12 may include a motor that rotates the winding shaft 12 forward and backward. In the configuration in which the rotation mechanism is an electric type including a motor, the operation unit is embodied as an operation switch for switching the rotation direction of the motor.

  A pair of left and right guide rails 21 extending in the ascending / descending direction are erected below the left and right ends of the winding shaft 12. Each of the pair of left and right guide rails 21 includes a front guide wall 21 </ b> F located on the front side of the screen 13 and a rear guide wall 21 </ b> B located on the rear side of the screen 13. The front guide wall 21F and the rear guide wall 21B form a guide passage 21G between the front guide wall 21F and the rear guide wall 21B. In the right guide rail 21, the right outer edge portion 13 </ b> E of the screen 13 enters between the front guide wall 21 </ b> F and the rear guide wall 21 </ b> B, and the front guide wall 21 </ b> F and the rear side in the left guide rail 21. An outer edge portion 13E on the left side of the screen 13 enters between the guide wall 21B.

  Each of the pair of left and right guide rails 21 includes a guide portion 22 as an upper end portion in the up and down direction. Each of the pair of left and right guide portions 22 includes a front guide wall 22F positioned on the front side of the screen 13 and a rear guide wall 22B positioned on the rear side of the screen 13. In the right guide rail 21, an outer edge portion 13E on the right side of the screen 13 enters a gap that is a space between the front guide wall 22F and the rear guide wall 22B. In the left guide rail 21, a left outer edge portion 13E of the screen 13 enters a gap between the front guide wall 22F and the rear guide wall 22B.

  In each of the pair of left and right front guide walls 22F, the side facing the other front guide wall 22F is a guide inner side 22A. In the left front guide wall 22F, the guide inner side 22A extends toward the left side in the left-right direction of the screen 13 so that the width LG along the left-right direction of the screen 13 gradually decreases toward the upper side in the up-and-down direction. It is preferable that it bends gently. Also on the right front guide wall 22F, the guide inner side 22A toward the right side in the left-right direction of the screen 13 so that the width LG along the left-right direction of the screen 13 gradually decreases toward the upper side in the up-and-down direction. Is preferably gently bent. In each of the pair of left and right rear guide walls 22B, the side facing the other rear guide wall 22B is the guide inner side 22A, and, like the front guide wall 22F, is bent gently. preferable.

  As shown in FIG. 2, on the rear side surface of the front guide wall 22F and the front side surface of the rear guide wall 22B, the distance between the front guide wall 22F and the rear guide wall 22B is set in the up-and-down direction. A narrowed portion 22S that narrows from the upper side toward the lower side in the ascending / descending direction protrudes.

  The rear side surface of the front side guide wall 21F supports a front side passage forming member 23F that constitutes the clamping portion, and the front side passage forming member 23F has a band shape over the entire elevation direction of the front side guide wall 21F. The front side surface of the rear side guide wall 21B supports a rear side passage forming member 23B that constitutes the holding portion, and the rear side passage forming member 23B has a band shape over the entire raising and lowering direction of the rear side guide wall 21B. Yes.

  The front passage forming member 23F and the rear passage forming member 23B partition the guide passage 21G between the front passage forming member 23F and the rear passage forming member 23B. The screen 13 enters the guide passage 21G defined by the front passage formation member 23F and the rear passage formation member 23B.

  As shown in FIG. 3, when the winding shaft 12 rotates forward about the rotation center 12 </ b> A and all of the screen 13 moves away from the guide rail 21, the lower end side of the screen 13 is on the upper side of the guide rail 21. To position. From this state, when the winding shaft 12 reverses around the rotation center 12A and the lower end side of the screen 13 is lowered, the outer edge portion 13E of the screen 13 is formed between the front guide wall 22F and the rear guide wall 22B. Get in between.

  At this time, for example, when the outer edge portion 13E of the screen 13 enters from a position closer to the front guide wall 22F than the middle between the front guide wall 22F and the rear guide wall 22B, the outer edge portion 13E of the screen 13 It is guided by the wall 22F and is positioned between the front guide wall 22F and the rear guide wall 22B. For example, when the outer edge portion 13E of the screen 13 enters from a position closer to the rear guide wall 22B than the middle between the front guide wall 22F and the rear guide wall 22B, the outer edge portion 13E of the screen 13 Guided by the wall 22B, this is also located halfway between the front guide wall 22F and the rear guide wall 22B.

  As shown in FIG. 4, the front passage forming member 23F is fixed to the rear side surface of the front guide wall 21F, and the rear side passage forming member 23B is fixed to the front side surface of the rear guide wall 21B. The movable part is composed of one or a plurality of movable members. The front-side passage forming member 23F, which is an example of a movable member, and the rear-side passage forming member 23B, which is an example of a movable member, are perpendicular to a vertical plane that passes between the front-side passage forming member 23F and the rear-side passage forming member 23B. , And have a shape that is symmetrical with respect to each other. Therefore, in the following, the configuration of the front side passage forming member 23F will be described in detail, and the description of the configuration overlapping with the front side passage forming member 23F in the rear side passage forming member 23B will be omitted.

  The front passage forming member 23F includes a support portion 23M that is fixed to the front guide wall 21F, and the support portion 23M has a rectangular column shape over substantially the entire lifting direction of the front guide wall 21F. The movable portion and the guide rail 21 may be integrally formed. Further, the support portion 23M of the front passage forming member 23F may be formed integrally with the front guide wall 21F and may be configured by a part of the front guide wall 21F. In the support portion 23M, a retaining curved plate 23S having a semi-cylindrical shape extending in the ascending / descending direction protrudes from a central corner portion of the screen 13. The retaining curved plate 23S has a semi-cylindrical shape that protrudes from the support portion 23M toward the rear passage forming member 23B, and a semicircular arc shape that protrudes toward the rear passage forming member 23B when viewed from the ascending / descending direction. The wall 21 </ b> F has substantially the entire elevation direction.

  The retaining curved plate 23 </ b> S has ends on the center side of the screen 13 and on the outer edge side of the screen 13 when viewed from the elevation direction. Of the end portions of the retaining curved plate 23S, the end portion on the center side of the screen 13 is connected to the support portion 23M, and the end portion on the outer edge side of the screen 13 is a free end. The retaining curved plate 23S is an elastic body having flexibility, and is configured to bend with a connection portion C1 that is a portion connecting the retaining curved plate 23S and the support portion 23M as a fulcrum.

  In the retaining curved plate 23S of the front passage forming member 23F, the rearmost portion, that is, the portion closest to the rear passage forming member 23B is the contact portion K, and the retaining curved plate 23S of the rear passage forming member 23B. The frontmost part, that is, the part closest to the front-side passage forming member 23F is also the contact portion K. These two contact portions K are opposed to each other. The two contact portions K are located closer to the outer edge portion of the screen 13 than the connection portion C1 in the left-right direction of the roll screen.

  The guide passage 21G is configured by a gap that is a space between the retaining curved plate 23S of the front passage forming member 23F and the retaining curved plate 23S of the rear passage forming member 23B, and the clearance between the two contact portions K is as follows. The thickness is set to be equal to or less than the thickness of the screen 13. The gap between the two contact portions K is set to a size that allows movement of the outer edge portion 13E that has entered the guide passage 21G along the ascending / descending direction. The two contact portions K are in contact with the outer edge portion 13E that has entered the guide passage 21G, and the two contact portions K are in sliding contact with the outer edge portion 13E of the screen 13 when the screen 13 moves up and down along the lifting direction.

  As indicated by the two-dot chain line in FIG. 5, among the positions that the front side passage forming member 23F and the rear side passage forming member 23B can take, the positions where the two contact portions K allow the outer edge portion 13E to move up and down are The guide position is an example of one position. On the other hand, as shown by the solid line in FIG. 5, of the possible positions of the front passage forming member 23F and the rear passage forming member 23B, the two contact portions K are closer to the center of the screen 13 than the guide position. The position displaced to is a retaining position which is an example of the second position.

  When the outer edge portion 13E of the screen 13 begins to come off, the front passage forming member 23F is displaced from the guide position to the retaining position by a reaction force against the frictional force with the screen 13. At this time, the retaining bent plate 23S of the front passage forming member 23F is bent so as to protrude toward the center of the screen 13 with the connecting portion C1 as a fulcrum. The bent retaining curved plate 23S increases the elastic force in the direction in which the contact portion K protrudes toward the rear passage forming member 23B. The rear passage forming member 23B is also displaced from the guide position to the retaining position. At this time, the retaining bent plate 23S of the rear passage forming member 23B is bent so as to project toward the center of the screen 13 with the connecting portion C1 as a fulcrum. The bent retaining plate 23S increases the elastic force in the direction in which the contact portion K protrudes toward the front passage forming member 23F. The front-side passage forming member 23F and the rear-side passage forming member 23B are configured to move, that is, to be displaced, between the guide position and the retaining position through respective elastic deformations.

[Action of roll screen]
Next, the operation of the roll screen having the above configuration will be described.
As indicated by the two-dot chain line in FIG. 5, the front passage forming member 23F and the rear passage forming member 23B are positioned at the guide positions in a state where the outer edge portion 13E of the screen 13 enters the guide passage 21G. . In this state, when an external force Fa that pulls the outer edge portion 13E of the screen 13 toward the center acts on the screen 13, the outer edge portion 13E of the screen 13 begins to gradually come off from the guide passage 21G.

  At this time, when the outer edge portion 13E of the screen 13 moves from the outer edge portion side of the screen 13 to the center side, the contact portion K of the front passage forming member 23F moves from the outer edge portion side of the screen 13 to the center side. A reaction force resisting the frictional force acts on the retaining curved plate 23S of the front passage forming member 23F. In addition, the reaction force against the frictional force is also retained by the rear passage forming member 23B so that the contact portion K of the rear passage forming member 23B moves from the outer edge side of the screen 13 to the center side. It acts on the plate 23S.

  Then, the front passage forming member 23F located at the guide position uses the connecting portion C1 as a fulcrum to bend the retaining curved plate 23S so as to project to the center side of the screen 13, while moving the contact portion K to the center side of the screen 13. Displace to Accordingly, the retaining curved plate 23S of the front passage forming member 23F increases the elastic force so as to protrude the contact portion K toward the rear passage forming member 23B. Further, the rear passage forming member 23B located at the guide position has the contact portion K at the center of the screen 13 while bending the retaining curved plate 23S so as to project to the center side of the screen 13 with the connecting portion C1 as a fulcrum. Displace to the side. Accordingly, the retaining curved plate 23S of the front passage forming member 23F increases the elastic force so as to protrude the contact portion K toward the rear passage forming member 23B. As a result, the front-side passage forming member 23F and the rear-side passage forming member 23B are displaced from the guide position to the retaining position following the screen 13 in the middle of being removed from the guide passage 21G, and are pressed as holding forces for the outer edge portion 13E. Is raised above the guide position. Then, the two contact portions K facing each other press the outer edge portion 13E on the way out, with the increased pressing force, and sandwich the outer edge portion 13E. As a result, the screen 13 can be prevented from coming off the guide rail 21.

  The outer edge portion 13E receives a frictional force by the pressure applied to the outer edge portion 13E, and when the screen 13 further receives a tension exceeding the frictional force, the front side passage forming member 23F displaced to the retaining position and the rear side passage formation. The member 23B allows the screen 13 to come out from these gaps.

According to the roll screen of the first embodiment, the following effects can be obtained.
(1) When the outer edge portion 13E of the screen 13 begins to come out from the gap between the front side passage forming member 23F and the rear side passage forming member 23B, each of the front side passage forming member 23F and the rear side passage forming member 23B It deforms following the screen 13 while in contact with the screen 13. And each of the front side channel | path formation member 23F and the rear side channel | path formation member 23B is displaced from the guidance position to the retaining position which raises the pressing force with respect to the outer edge part 13E. Therefore, it is possible to prevent the entire outer edge portion 13E from coming out of the gap between the front side passage forming member 23F and the rear side passage forming member 23B, and hence the screen 13 from coming off from the guide rail 21.

  (2) The front-side passage forming member 23F and the rear-side passage forming member 23B are elastically deformed following the screen 13, and the pressing force on the outer edge portion 13E is increased by the elastic force due to the elastic deformation. Then, the greater the degree of elastic deformation of the front side passage forming member 23F and the degree of elastic deformation of the rear side passage forming member 23B, that is, the greater the degree of removal of the outer edge portion 13E, the greater the pressing force is applied to the outer edge portion 13E. Join in. At this time, the greater the external force Fa acting on the screen 13 is, the greater the degree that the outer edge portion 13E is removed. Therefore, with the above-described configuration, a pressing force corresponding to the external force Fa acting on the screen 13 is applied to the outer edge portion 13E, and the pressing force acting on the screen 13 becomes excessive with respect to the external force Fa, or the screen It is also possible to suppress the pressing force acting on 13 from being excessively small with respect to the external force Fa.

  (3) Both the front passage forming member 23F and the rear passage forming member 23B are displaced between the guide position and the retaining position. Therefore, whether the outer edge portion 13E that receives the external force Fa is pulled out toward the front side of the roll screen or the outer edge portion 13E that receives the external force Fa is pulled out toward the rear side of the roll screen, Omission of the screen 13 is suppressed by the pressure.

  (4) The retaining curved plate 23S of the front passage forming member 23F has a semi-cylindrical shape in which the contact portion K is positioned closer to the outer edge portion of the screen 13 than the connection portion C1. The retaining curved plate 23S of the rear passage forming member 23B also has a semi-cylindrical shape in which the contact portion K is positioned closer to the outer edge portion of the screen 13 than the connection portion C1. Therefore, even if the entire outer edge portion 13E is removed from the gap between the front side passage forming member 23F and the rear side passage forming member 23B, it is directed between the front side passage forming member 23F and the rear side passage forming member 23B. When the outer edge portion 13E is inserted, the outer edge portion 13E of the screen 13 reaches the boundary between the front side passage forming member 23F and the rear side passage forming member 23B along the semi-cylindrical surface. Therefore, it is easy to insert the outer edge portion 13E of the screen 13 between the front passage forming member 23F and the rear passage forming member 23B.

The roll screen of the first embodiment can be modified as follows.
The movable portion is not limited to both the front passage forming member 23F and the rear passage forming member 23B, and may be either the front passage forming member 23F or the rear passage forming member 23B.

  For example, the rear passage forming member 23B includes a fixed opposing surface corresponding to the surface shape of the retaining curved plate 23S, and the opposing surface of the rear passage forming member 23B and the retaining member of the front passage forming member 23F. The outer edge portion 13E of the screen 13 may be sandwiched between the curved plates 23S. Alternatively, the front-side passage forming member 23F includes a fixed opposing surface corresponding to the surface shape of the retaining curved plate 23S, and the opposing surface of the front-side passage forming member 23F and the retaining curve of the rear-side passage forming member 23B. The outer edge portion 13E of the screen 13 may be sandwiched between the plates 23S. Even if it is such a structure, the effect according to said (1) (2) (4) is acquired.

  In the retaining curved plate 23 </ b> S, the end on the outer edge side of the screen 13 is not limited to a free end, and may be a movable end whose movement is restricted by movement along the left-right direction of the screen 13. For example, the end portion on the outer edge portion side of the screen 13 may be coupled to the retaining curved plate 23S so as to be movable with respect to the support portion 23M. Even if it is such a structure, the effect according to said (1)-(4) will be acquired if it is the structure which elastically deforms so that the extraction bend plate 23S may protrude toward the center side of the screen 13. FIG.

  -The length along the raising / lowering direction of the front side channel | path formation member 23F may be shorter than the length along the raising / lowering direction of the front side guide wall 21F. At this time, a plurality of front passage forming members 23F may be supported by the front guide wall 21F, and the plurality of front passage forming members 23F may be arranged in the ascending / descending direction. Moreover, the length along the raising / lowering direction of the back side channel | path formation member 23B may be shorter than the length along the raising / lowering direction of the rear side guide wall 21B. At this time, the plurality of rear passage forming members 23B may be supported by the rear guide wall 21B, and the plurality of rear passage forming members 23B may be arranged along the ascending / descending direction. With such a configuration, when the specific portion of the outer edge portion 13E receives the external force Fa, only the front passage forming member 23F that contacts the specific portion or only the rear passage forming member 23B that contacts the specific portion is displaced. To do. As a result, among the plurality of movable members arranged in the ascending / descending direction, only the movable member necessary for stopping the removal of the screen 13 is movable, so that the movable load of the movable member necessary for stopping the removal of the screen 13 is increased. It is reduced.

  The shape of the front passage forming member 23F and the shape of the rear passage forming member 23B are symmetrical with each other with respect to the vertical plane that passes between the front passage forming member 23F and the rear passage forming member 23B. It does not have to be. For example, the retaining curved plate 23S of the front-side passage forming member 23F and the retaining curved plate 23S of the rear-side passage forming member 23B are arranged in the left-right direction of the roll screen within a range in which the two contact portions K can sandwich the outer edge portion 13E. May be arranged at different positions. Even if it is such a structure, the effect according to said (1)-(4) is acquired.

[Second Embodiment]
A roll screen according to a second embodiment in which the solar shading device of the present disclosure is embodied as a roll screen will be described with reference to FIGS. 6 and 7. The roll screen of 2nd Embodiment and the roll screen of 1st Embodiment are equipped with the channel | path formation member which consists of a mutually different structure. Below, the structure different from the roll screen of 1st Embodiment is mainly demonstrated, the same code | symbol is attached | subjected to the structure corresponding to the structure of the roll screen of 1st Embodiment, and the description is abbreviate | omitted.

[Roll screen configuration]
As shown in FIG. 6, the front passage forming member 33F that constitutes the clamping portion is supported on the inner side surface of the front guide wall 21F, and the rear passage formation member 33B that constitutes the clamping portion is the rear guide wall 21B. It is supported on the inner surface of the. The movable part is composed of one or a plurality of movable members. The front-side passage forming member 33F, which is an example of a movable member, and the rear-side passage forming member 33B, which is an example of a movable member, are perpendicular to a vertical plane that passes between the front-side passage forming member 33F and the rear-side passage forming member 33B. , And have a shape that is symmetrical with respect to each other. Therefore, in the following, the front side passage forming member 33F will be described in detail, and the description of the configuration overlapping with the front side passage forming member 33F in the rear side passage forming member 33B will be omitted.

  The front passage forming member 33F includes a support portion 33M that is fixed to the front guide wall 21F, and the support portion 33M has a column shape that extends substantially in the ascending / descending direction of the front guide wall 21F. The movable portion and the guide rail 21 may be integrally formed. Further, the support portion 33M of the front passage forming member 33F may be formed integrally with the front guide wall 21F and may be configured by a part of the front guide wall 21F. The support portion 33M supports the retaining cam 33S having a slanted ball shape when viewed from the ascending / descending direction in a rotatable state. The retaining cam 33S has a dip shape that protrudes from the support portion 33M toward the rear passage formation member 23B, and has a dip shape that protrudes toward the rear passage formation member 23B over substantially the entire lifting direction of the front guide wall 21F. Have.

  The cam surface of the retaining cam 33 </ b> S is a curved surface that protrudes toward the rear passage forming member 23 </ b> B when viewed from the ascending / descending direction. The retaining cam 33S is configured to swing the cam surface about the center axis C2 extending in the ascending / descending direction.

  As shown by the two-dot chain line in FIG. 7, among the positions that the front passage forming member 33F can take, that is, the positions that the retaining cam 33S can take, the position where the cam surface of the retaining cam 33S is the outermost side is The guide position is an example of one position. On the other hand, as shown by the solid line in FIG. 7, among the positions that the front passage forming member 33F can take, that is, the positions that the retaining cam 33S can take, the cam surface of the retaining cam 33S is closer to the screen 13 than the guiding position. The position displaced toward the center is a retaining position that is an example of the second position.

Note that the support portion 33M restricts the cam surface at the guide position from being displaced to the outer edge side by the contact between the restriction portion 33D of the support portion 33M and the retaining cam 33S.
When the front-side passage forming member 33F is located at the guide position, the rearmost side of the cam surface of the retaining cam 33S, that is, the portion closest to the rear-side passage forming member 33B is a facing portion facing the outer edge portion 13E. This is the contact portion K. Further, when the rear passage forming member 33B is located at the guide position, the portion of the cam surface of the retaining cam 33S that is closest to the front side, that is, the closest to the front passage forming member 33F, also faces the outer edge portion 13E. It is the contact part K as an opposing part. These two contact portions K are opposed to each other. The two contact portions K are located closer to the outer edge portion of the screen 13 than the central axis C2 in the left-right direction of the roll screen.

  The guide passage 21G is configured by a gap that is a space between the retaining cam 33S of the front passage forming member 33F and the retaining cam 33S of the rear passage forming member 33B, and the gap between the two contact portions K is a screen. The thickness is set to 13 or less. The gap between the two contact portions K is set to a size that allows movement of the outer edge portion 13E that has entered the guide passage 21G along the ascending / descending direction. The two contact portions K are in contact with the outer edge portion 13E that has entered the guide passage 21G, and the two contact portions K are in sliding contact with the outer edge portion 13E of the screen 13 when the screen 13 moves up and down along the lifting direction. In each of the front passage forming member 33F and the rear passage forming member 33B, in the state where the retaining cam 33S is located at the retaining position, the center shaft C2 of the retaining cam 33S is positioned more than the state where the retaining cam 33S is located at the guiding position. The distance to the contact portion K is large.

  When the front passage forming member 33F is displaced from the guide position to the retaining position, the retaining cam 33S of the front passage forming member 33F rotates the cam surface toward the center side of the screen 13 with the center axis C2 as the rotation center. The cam surface that turns toward the center side of the screen 13 is displaced in a direction in which the contact portion K protrudes toward the rear passage forming member 33B. When the rear passage forming member 33B is displaced from the guide position to the retaining position, the retaining cam 33S of the rear passage forming member 33B is cammed toward the center side of the screen 13 with the center axis C2 as the rotation center. Turn the face. The cam surface turning toward the center side of the screen 13 is displaced in a direction in which the contact portion K protrudes toward the front passage forming member 33F. The front-side passage forming member 33F and the rear-side passage forming member 33B are configured to move, that is, to be displaced, between the guide position and the retaining position through each swing.

[Action of roll screen]
Next, the operation of the roll screen having the above configuration will be described.
As indicated by a two-dot chain line in FIG. 7, in a state where the outer edge portion 13E of the screen 13 enters the guide passage 21G, the front side passage forming member 33F and the rear side passage forming member 33B are respectively positioned at the guide positions. To do. In this state, when an external force Fa that pulls the outer edge portion 13E of the screen 13 toward the center acts on the screen 13, the outer edge portion 13E of the screen 13 begins to gradually come off from the guide passage 21G.

  At this time, when the outer edge portion 13E of the screen 13 moves from the outer edge portion side of the screen 13 to the center side, the contact portion K of the front passage forming member 33F moves from the outer edge portion side of the screen 13 to the center side. A reaction force against the frictional force acts on the cam surface of the retaining cam 33S of the front passage forming member 33F. Further, the contact force K of the rear passage forming member 33B moves from the outer edge side of the screen 13 to the center side, so that the reaction force against the frictional force is also a retaining cam of the rear passage forming member 33B. It acts on the cam surface of 33S.

  The retaining cam 33S of the front passage forming member 33F located at the guide position rotates the cam surface toward the center of the screen 13 with the center axis C2 as the rotation center. The retaining cam 33S of the front passage forming member 33F displaces the contact portion K toward the center of the screen 13 while protruding toward the rear passage forming member 33B. Further, the retaining cam 33S of the rear passage forming member 33B located at the guide position rotates the cam surface toward the center side of the screen 13 with the center axis C2 as the rotation center. The retaining cam 33S of the rear passage forming member 33B is displaced toward the center of the screen 13 while projecting the contact portion K toward the front passage forming member 33F. As a result, the front-side passage forming member 33F and the rear-side passage forming member 33B are displaced from the guide position to the retaining position following the screen 13 in the middle of being removed from the guide passage 21G, and are pressed as holding forces for the outer edge portion 13E. Is raised above the guide position. Then, the two contact portions K facing each other press the outer edge portion 13E on the way out, with the increased pressing force, and sandwich the outer edge portion 13E. As a result, the screen 13 can be prevented from coming off the guide rail 21.

  The outer edge portion 13E receives a frictional force due to the pressure applied to the outer edge portion 13E, and when the screen 13 further receives a tension exceeding the frictional force, the front side passage forming member 33F displaced to the retaining position and the rear side passage formation. The member 33B allows the screen 13 to come out from these gaps.

According to the roll screen of the said 2nd Embodiment, in addition to the effect according to said (1)-(4), the effect enumerated below is acquired.
(5) The retaining cam 33S that follows the screen 13 rotates around the central axis C2 extending along the ascending / descending direction. At this time, since the raising / lowering along the raising / lowering direction of the outer edge portion 13E and the rotation of the retaining cam 33S are movements in directions perpendicular to each other, even if the screen 13 that moves up and down contacts the retaining cam 33S, The retaining cam 33S is difficult to turn. Therefore, the reliability of the guide at the guide position of the retaining cam 33S and the retaining at the retaining position of the retaining cam 33S is improved.

  (6) The retaining cam 33S of the front-side passage forming member 33F has a sled shape that positions its cam surface closer to the outer edge portion of the screen 13 than the central axis C2. The retaining cam 33S of the rear passage forming member 33B also has a sling shape that positions its cam surface on the outer edge side of the screen 13 with respect to the central axis C2. Therefore, even if the entire outer edge portion 13E is removed from the gap between the front side passage forming member 33F and the rear side passage forming member 33B, it is directed toward the space between the front side passage forming member 33F and the rear side passage forming member 33B. When the outer edge portion 13E is inserted, the outer edge portion 13E of the screen 13 reaches the boundary between the front side passage forming member 33F and the rear side passage forming member 33B along the cam surface. Therefore, it is easy to insert the outer edge portion 13E of the screen 13 between the front passage forming member 33F and the rear passage forming member 33B.

The roll screen of the second embodiment can be modified as follows.
The movable portion is not limited to both the front passage formation member 33F and the rear passage formation member 33B, and may be either the front passage formation member 33F or the rear passage formation member 33B.

  For example, the rear passage forming member 33B includes a fixed facing surface corresponding to the cam surface shape of the retaining cam 33S thereof, the facing surface of the rear passage forming member 33B, and the retaining surface of the front passage forming member 33F. The outer edge portion 13E of the screen 13 may be sandwiched between the cam 33S. Alternatively, the front-side passage forming member 33F includes a fixed facing surface corresponding to the cam surface shape of the retaining cam 33S, and the facing surface of the front-side passage forming member 33F and the retaining cam of the rear-side passage forming member 33B. The outer edge portion 13E of the screen 13 may be sandwiched by 33S. Even if it is such a structure, the effect according to said (5) (6) is acquired.

  The shape of the retaining cam 33S is not limited to the slanted shape when viewed from the ascending / descending direction, but may be an elliptical shape when viewed from the ascending / descending direction. It may be a cam. In short, the shape of the retaining cam 33S is such that the distance between the contact portion K and the central axis C2 is larger in the state where the retaining cam 33S is located at the retaining position than in the state where the retaining cam 33S is located at the guide position. Any shape can be used. If it is such a structure, the effect according to said (5) (6) will be acquired.

  -The length along the raising / lowering direction of the retaining cam 33S may be shorter than the length along the raising / lowering direction of the front side guide wall 21F, or may be shorter than the length along the raising / lowering direction of the rear side guide wall 21B. Good. At this time, a plurality of retaining cams 33S may be supported on the front guide wall 21F or the rear guide wall 21B, and the plurality of retaining cams 33S may be arranged along the ascending / descending direction. With such a configuration, when the specific part of the outer edge portion 13E receives the external force Fa, only the retaining cam 33S that contacts the specific part is displaced. As a result, among the plurality of movable members arranged in the up-and-down direction, only the movable member necessary for stopping the removal of the screen 13 is movable, so that the movable load of the movable member necessary for preventing the removal of the screen 13 is reduced. The

  The shape of the front passage forming member 33F and the shape of the rear passage forming member 33B are symmetrical with each other with respect to the vertical plane passing between the front passage forming member 33F and the rear passage forming member 33B. It does not have to be. For example, the retaining cam 33S of the front-side passage forming member 33F and the retaining cam 33S of the rear-side passage forming member 33B are mutually in the left-right direction of the roll screen within a range in which the two contact portions K sandwich the outer edge portion 13E. You may arrange | position in a different position. Even if it is such a structure, the effect according to said (5) (6) is acquired.

  At least one of the retaining cam 33S of the front passage forming member 33F and the retaining cam 33S of the rear passage forming member 33B may be a flexible elastic member or a member having no flexibility. There may be.

The cam surface of the retaining cam 33S may be a plurality of convex portions or a concave and convex surface in which a plurality of concave portions are arranged along the cam surface.
[Third Embodiment]
A roll screen according to a third embodiment in which the solar shading device of the present disclosure is embodied as a roll screen will be described with reference to FIGS. The roll screen of 3rd Embodiment and the roll screen of 1st Embodiment are equipped with the channel | path formation member which consists of a mutually different structure. Below, the structure different from the roll screen of 1st Embodiment is mainly demonstrated, the same code | symbol is attached | subjected to the structure corresponding to the structure of the roll screen of 1st Embodiment, and the description is abbreviate | omitted.

[Roll screen configuration]
As shown in FIG. 8, the front passage forming member 43F constituting the clamping part is supported on the inner side surface of the front guide wall 21F, and the rear passage forming member 43B constituting the clamping part is supported by the rear guide wall 21B. It is supported on the inner surface of the. The movable part is composed of one or a plurality of movable members. A front passage forming member 43F, which is an example of a movable member, and a rear passage forming member 43B, which is an example of a movable member, are in relation to a vertical plane that passes between the front passage forming member 43F and the rear passage forming member 43B. , And have a shape that is symmetrical with respect to each other. Therefore, in the following, the configuration of the front passage forming member 43F will be described in detail, and the description of the configuration overlapping with the front passage forming member 43F in the rear side passage forming member 43B will be omitted.

  The front passage forming member 43F includes a support portion 43M that is fixed to the front guide wall 21F, and the support portion 43M has a column shape that extends over substantially the entire lifting direction of the front guide wall 21F. The movable portion and the guide rail 21 may be integrally formed. Further, the support portion 43M of the front passage forming member 43F may be formed integrally with the front guide wall 21F and configured as a part of the front guide wall 21F. The support portion 33M supports the retaining lever cam 43S having an arc shape when viewed from the ascending / descending direction in a rotatable state. The retaining lever cam 43 </ b> S includes an output base end portion 44 having a fan shape when viewed from the elevation direction, and an input portion 46 having a lever shape extending from the output base end portion 44 toward the center side of the screen 13. .

  As shown in FIG. 9, the output base end portion 44 of the front passage forming member 43F has a fan shape that extends from the central axis C3 toward the rear passage forming member 43B with the central axis C3 as the center. The output base end portion 44 of the front-side passage forming member 43F has a continuous fan shape over substantially the entire front-side guide wall 21F in the ascending / descending direction. The support portion 43M supports the output base end portion 44 so that the output base end portion 44 can swing about the central axis C3.

  The outer peripheral surface of the output base end portion 44 is a cam surface 45, and the cam surface 45 has an uneven shape configured such that a plurality of protrusions are arranged along the circumferential direction centering on the central axis C3. ing. The cam surface 45 is a step surface configured such that a step along the radial direction of the circle C centered on the central axis C3 is repeated along the circumferential direction.

  The cam diameter, which is the distance between the cam surface 45 and the central axis C3, is larger at a portion of the cam surface 45 located on the outer edge side of the screen 13. The minimum value of the cam diameter is the guide diameter R, and the portion of the cam surface 45 located on the outer edge side of the screen 13 has a larger cam diameter. The shape of the output base end 44 is such that the cam surface 45 has a larger cam diameter at a portion located on the outer edge side of the screen 13 and the cam surface 45 can press the outer edge 13E. Good. And in the output base end part 44, the whole shape of the output base end part 44, a cam diameter, etc. are suitably changed in the range with which these conditions are satisfy | filled. Of the cam surface 45 of the front-side passage forming member 43F, the rearmost portion, that is, the portion closest to the rear-side passage forming member 43B is the facing portion T, and each time the cam surface 45 rotates about the central axis C3, At the cam surface 45, the facing portion T is displaced.

  The input portion 46 of the front passage forming member 43 </ b> F has an arc shape extending from the output base end portion 44 toward the center side of the screen 13 and toward the front side of the screen 13. The input portion 46 of the front passage forming member 43F has an arc shape that is continuous over substantially the entire front guide wall 21F in the ascending / descending direction. The shape of the input unit 46 is extended by the screen 13 when the screen 13 moves from the output base end 44 toward the center of the screen 13 and moves in a direction intersecting the surface direction of the screen 13. Any shape may be used as long as the input unit 46 is pushed. The size of the curvature radius of the input unit 46, the size of the bending angle, and the length of the screen 13 in the left-right direction are the amount by which the screen 13 is displaced to the front side or the rear side, and further to the screen 13 Is appropriately set in accordance with the bending angle of the outer edge portion 13E at the time of displacement. For example, the smaller the curvature radius of the input unit 46, the smaller the angle of bending at the input unit 46, and the longer the length of the input unit 46 in the left-right direction of the screen 13, the smaller the displacement of the screen 13. The retainer is activated by. Conversely, the smaller the radius of curvature of the input unit 46, the greater the angle at which the input unit 46 bends, and the shorter the length of the input unit 46 in the left-right direction of the screen 13, the longer the operation of retaining. At that time, a large displacement of the screen 13 is required. The input unit 46 is fixed to the output base end 44 so that the input unit 46 and the output base end 44 move together.

  Of the positions that the front passage forming member 43F can take, that is, the positions that the retaining lever cam 43S can take, the position where the cam surface 45 of the retaining lever cam 43S is closest to the outer edge is a guide position that is an example of a first position. . When the front passage forming member 43F is positioned at the guide position, the distance between the facing portion T and the central axis C3 is the guide diameter R that is the minimum value of the cam diameter. On the other hand, among the positions that the front passage forming member 43F can take, that is, the positions that the retaining lever cam 43S can take, the position where the cam surface 45 of the retaining lever cam 43S is displaced to the center side of the screen 13 from the guide position is: This is a retaining position that is an example of the second position. When the front passage forming member 43F is located at the retaining position, the distance between the facing portion T and the central axis C3 is larger than the guide diameter R.

Note that the support portion 43M restricts the cam surface 45 at the guide position from being displaced to the outer edge side by contact between the restriction portion 43D of the support portion 43M and the retaining lever cam 43S.
The guide passage 21G is configured by a gap that is a space between the retaining lever cam 43S of the front passage forming member 43F and the retaining lever cam 43S of the rear passage forming member 43B. When the two retaining lever cams 43S are positioned at the guide position, the gap between the two retaining lever cams 43S is set to a size that allows the outer edge portion 13E that has entered the guide passage 21G to move in the ascending / descending direction. . When the two retaining lever cams 43S are positioned at the retaining position, the gap between the two retaining lever cams 43S is set to a size that presses the outer edge portion 13E that has entered the guide passage 21G with the cam surface 45.

[Action of roll screen]
Next, the operation of the roll screen having the above configuration will be described.
As shown in FIG. 10, in a state where the outer edge portion 13E of the screen 13 enters the guide passage 21G, the front side passage forming member 43F and the rear side passage forming member 43B are positioned at the guide positions. In this state, when an external force directed in a direction crossing the surface direction of the screen 13, for example, an external force Fa that causes the center portion of the screen 13 to protrude toward the front side of the screen 13, acts on the screen 13. 13E begins to gradually escape from the guide passage 21G.

  At this time, when the outer edge portion 13E of the screen 13 moves to the front side of the screen 13, the contact portion K that is a part of the input portion 46 and the outer edge portion 13E of the screen 13 come into contact with each other. When the outer edge portion 13E of the screen 13 further moves to the front side of the screen 13 from this state, the contact portion K is pushed by the screen 13, and the tip of the input portion 46 of the front side passage forming member 43F is in the direction of the arrow in FIG. The input unit 46 rotates so as to move to the front side of the screen 13 along the screen. When the input unit 46 rotates about the central axis C3, the output base end 44 also rotates about the central axis C3.

  As shown in FIG. 11, when the output base end portion 44 rotates around the central axis C3, the cam surface 45 of the output base end portion 44 is indicated by the solid line in FIG. 11 from the position indicated by the two-dot chain line in FIG. Displace to position. As a result, the position of the facing portion T is displaced on the cam surface 45 of the output base end portion 44 so that the distance between the facing portion T and the central axis C3 is increased. As a result, the front-side passage forming member 43F and the rear-side passage forming member 43B are displaced from the guide position to the retaining position following the screen 13 in the middle of being removed from the guide passage 21G, and the pressure on the outer edge portion 13E is pushed from the guide position. Also raise. Then, the two opposing portions T facing each other press the outer edge portion 13E on the way out, with the increased pressing force, and sandwich the outer edge portion 13E. As a result, the screen 13 can be prevented from coming off the guide rail 21.

  The outer edge portion 13E receives a frictional force by the pressure applied to the outer edge portion 13E, and when the screen 13 further receives a tension exceeding the frictional force, the front side passage forming member 43F displaced to the retaining position and the rear side passage formation. The member 43B allows the screen 13 to come out from these gaps.

According to the roll screen of the said 3rd Embodiment, in addition to the effect according to said (1)-(6), the effect enumerated below is acquired.
(7) When the screen 13 is displaced in a direction crossing the surface direction of the screen 13, the displacement amount of the screen 13 is larger on the center side of the screen 13 than the outer edge portion 13 </ b> E entering the guide rail 21. . Therefore, the input unit 46 located closer to the center of the screen 13 than the cam surface 45 can detect such displacement of the screen 13 more easily than the cam surface 45. Then, the screen 13 that moves in a direction intersecting the surface direction of the screen 13 pushes the input unit 46, and thereby the cam surface 45 rotates. Therefore, the accuracy of the retaining of the screen 13 against the overhanging of the screen 13 is improved. Enhanced.

  (8) Since the cam surface 45 that presses the outer edge portion 13E is an uneven surface, when the cam surface 45 presses the outer edge portion 13E, the pressing force acting on the outer edge portion 13E is concentrated on each of the plurality of protrusions. . Therefore, on the premise that the pressing force acting on the outer edge portion 13E from the cam surface 45 is equal, the pressing force per unit area of the outer edge portion 13E is increased, so that the gap between the front side passage forming member 43F and the rear side passage forming member 43B is increased. It is further suppressed that the outer edge portion 13E comes off from the gap.

  (9) The retaining lever cam 43S of the front passage forming member 43F positions its cam surface 45 closer to the outer edge portion of the screen 13 than the input portion 46. The retaining lever cam 43 </ b> S of the rear passage forming member 43 </ b> B also has its cam surface 45 positioned closer to the outer edge side of the screen 13 than the input portion 46. The input portion 46 of the front passage forming member 43 </ b> F has an arc shape extending from the cam surface 45 toward the center side of the screen 13 and toward the front side of the screen 13. The input portion 46 of the rear passage forming member 43 </ b> B has an arc shape extending from the cam surface 45 toward the center side of the screen 13 and toward the rear side of the screen 13. Therefore, even if the entire outer edge portion 13E is removed from the gap between the front side passage forming member 43F and the rear side passage forming member 43B, it is directed toward the space between the front side passage forming member 43F and the rear side passage forming member 43B. When the outer edge portion 13E is inserted, the outer edge portion 13E of the screen 13 reaches the boundary between the front side passage forming member 43F and the rear side passage forming member 43B along the cam surface 45. Therefore, it is easy to insert the outer edge portion 13E of the screen 13 between the front passage forming member 43F and the rear passage forming member 43B.

The roll screen of the third embodiment can be modified as follows.
The movable portion is not limited to both the front passage formation member 43F and the rear passage formation member 43B, and may be either the front passage formation member 43F or the rear passage formation member 43B.

  For example, the rear-side passage forming member 43B includes a fixed opposing surface corresponding to the cam surface shape of the output base end 44 thereof, and the opposing surface of the rear-side passage forming member 43B and the front-side passage forming member 43F The outer edge portion 13E of the screen 13 may be sandwiched between the retaining lever cam 43S. Alternatively, the front-side passage forming member 23F includes a fixed facing surface corresponding to the cam surface shape of the output base end portion 44 thereof, and the facing surface of the front-side passage forming member 43F and the rear-side passage forming member 43B have. The outer edge portion 13E of the screen 13 may be sandwiched between the retaining lever cam 43S. Even if it is such a structure, the effect according to said (7)-(9) is acquired.

  The shape of the output base end 44 is not limited to a fan shape when viewed from the lifting direction, but may be an elliptical shape when viewed from the lifting direction, and the output base end 44 is a circle when viewed from the lifting direction. The shape may be an eccentric cam. In short, the shape of the output base end portion 44 is such that the output base end portion 44 and the central axis C3 are in a state where the output base end portion 44 is positioned at the retaining position, as compared with the state where the output base end portion 44 is positioned at the guide position. Any shape can be used as long as the distance between them increases. If it is such a structure, the effect according to said (7)-(9) will be acquired.

  The length of the retaining lever cam 43S along the lifting direction may be shorter than the length of the front guide wall 21F along the lifting direction, or may be shorter than the length of the rear guide wall 21B along the lifting direction. Good. At this time, the plurality of retaining lever cams 43S may be supported on the front guide wall 21F or the rear guide wall 21B, and the plurality of retaining lever cams 43S may be arranged in the ascending / descending direction. With this configuration, when the specific portion of the outer edge portion 13E receives the external force Fa, only the retaining lever cam 43S that comes into contact with the specific portion is displaced. As a result, among the plurality of movable members arranged in the up-and-down direction, only the movable member necessary for stopping the removal of the screen 13 is movable, so that the movable load of the movable member necessary for preventing the removal of the screen 13 is reduced. The

  The shape of the front passage forming member 43F and the shape of the rear passage forming member 43B are symmetrical with each other with respect to the vertical plane that passes between the front passage forming member 43F and the rear passage forming member 43B. It does not have to be. For example, the retaining lever cam 43S of the front-side passage forming member 43F and the retaining lever cam 43S of the rear-side passage forming member 43B are mutually in the left-right direction of the roll screen within the range where the two opposing portions T sandwich the outer edge portion 13E. You may arrange | position in a different position. Even if it is such a structure, the effect according to said (7)-(9) is acquired.

  The front passage forming member 43F and the rear passage forming member 43B are not limited to the configuration in which the convex portions of the cam surface 45 face each other, but the convex portion of one cam surface 45 and the concave portion of the other cam surface 45. May be configured to engage with each other with a gap. With such a configuration, in addition to the effects according to the above (7) to (9), the outer edge portion 13E can be further prevented from coming off between the cam surfaces 45.

  At least one of the retaining lever cam 43S of the front passage forming member 43F and the retaining lever cam 43S of the rear passage forming member 43B may be an elastic member having flexibility or a member having no flexibility. There may be.

The cam surface 45 of the retaining lever cam 43S is not limited to a plurality of convex portions or an uneven surface in which a plurality of concave portions are arranged along the cam surface, and may be a flat surface.
Each embodiment mentioned above and each modification can also be modified as follows.

  One guide rail 21 includes a passage forming member described in the first embodiment and its modification, a passage forming member described in the second embodiment and its modification, and a third embodiment and its modification. What is necessary is just a structure provided with at least 1 of the channel | path formation member described in (3). For example, one guide rail 21 may include a passage forming member described in the first embodiment and a passage forming member described in the second embodiment, or described in the first embodiment. You may provide the channel | path formation member and the channel | path formation member described in 3rd Embodiment. For example, one guide rail 21 may include a passage forming member described in the second embodiment and a passage forming member described in the third embodiment.

-A roll screen should just be the structure provided with the above-mentioned channel | path formation member in at least one of the two guide rails 21. FIG.
-In the left-right direction of a roll screen, it is preferable that the width W which the guide rail 21 has is set as follows.

  As shown in FIG. 12, a straight line connecting the upper end in the up-and-down direction and the end of the winding shaft 12 on the inner side 21 i of the guide rail 21 is a screen guide line L. Further, an angle formed by the outer side 21o of the guide rail 21 and the screen guide line L is defined as a guide angle θ. The width W of the guide rail 21 is preferably set so that the guide angle θ is less than 25 °. Further, it is more preferable that the width W of the guide rail 21 is set so that the guide angle θ is 17 ° or less. With such a configuration, even if the outer edge portion 13E removed from the guide rail 21 is wound around the winding shaft 12 while being in sliding contact with the inner side 21i, the outer edge portion 13E is reversed with respect to the normal winding type. It is suppressed that it is wound up.

[Fourth Embodiment]
A roll screen according to a fourth embodiment in which the solar shading device of the present disclosure is embodied as a roll screen will be described with reference to FIG. The roll screen according to the fourth embodiment and the roll screen according to the first embodiment include outer edges of screens having different configurations. Below, the structure different from the roll screen of 1st Embodiment is mainly demonstrated, the same code | symbol is attached | subjected to the structure corresponding to the structure of the roll screen of 1st Embodiment, and the description is abbreviate | omitted.

[Roll screen configuration]
As shown in FIG. 13, the screen 13 in the roll screen includes a screen body 13 </ b> B, a plurality of left outer edge portions 13 </ b> EL, and a plurality of right outer edge portions 13 </ b> ER. Each of the left outer edge portions 13EL extends from the left edge of the screen body 13B toward the left side of the screen body 13B. Each of the plurality of right outer edge portions 13ER extends from the right edge of the screen body 13B toward the right side of the screen body 13B. Each of the plurality of left outer edge portions 13EL and each of the plurality of right outer edge portions 13ER is embodied in, for example, a bar or plate made of a material such as a resin fixed to the screen body 13B. In FIG. 13, a part of the left outer edge part 13EL and a part of the right outer edge part 13ER are omitted for the sake of convenience in showing a relationship between positions of the members in the front-rear direction by cutting out a part of the roll screen. The screen body 13B is lined up in the up-and-down direction of the screen body 13B with a gap along the up-and-down direction.

  Each of the plurality of left outer edge portions 13EL is introduced into a guide passage 21G which is a space between the front side passage forming member 23F and the rear side passage forming member 23B in the left guide rail 21 located on the left side of the screen body 13B. ing. Each of the plurality of right outer edge portions 13ER is introduced into a guide passage 21G that is a space between the front side passage forming member 23F and the rear side passage forming member 23B in the right guide rail 21 located on the right side of the screen body 13B. ing.

  Even in such a configuration, when each outer edge portion 13EL, 13ER begins to come out from the gap between the front side passage forming member 23F and the rear side passage forming member 23B, the front side passage forming member 23F and the rear side passage forming member 23B It deforms following the screen body 13B while contacting the outer edge portions 13EL, 13ER. As a result, each of the front side passage forming member 23F and the rear side passage forming member 23B is displaced from the guide position to a retaining position where the pressing force is increased as a holding force for the outer edge portions 13EL and 13ER. Then, it is possible to prevent all of the outer edge portions 13EL and 13ER from deviating from the gap between the front side passage forming member 23F and the rear side passage forming member 23B, and consequently the screen 13 from deviating from the guide rail 21.

The roll screen of the fourth embodiment can be modified as follows.
As in the other embodiments, the movable portion is not limited to both the front passage forming member 23F and the rear passage forming member 23B, and may be either the front passage forming member 23F or the rear passage forming member 23B.

  The front side passage forming member 23F and the rear side passage forming member 23B may be configured by the front side passage forming member 33F and the rear side passage forming member 33B described in the second embodiment, or described in the third embodiment. The front side passage forming member 43F and the rear side passage forming member 43B may be configured. Further, the guide rail may be a combination of these.

  As shown in FIG. 14, the solar radiation shielding device is not limited to a roll screen but may be a horizontal pleated screen. At this time, the position where the outer edge portions 13EL and 13ER are connected in the screen main body 13B may be the fold line 13K of the pleat screen or may not be the fold line 13K. In addition, it is preferable that the positions where the outer edge portions 13EL and 13ER are connected in the screen main body 13B are portions that are not displaced in the front-rear direction when the pleat screen is lifted. With such a configuration, the pleat screen is prevented from deviating from the guide rail, and the pleat clean is caused by friction between the front side passage forming member 43F and the rear side passage forming member 43B and the outer edge portions 13EL and 13ER. It is also possible to prevent the folding of the sheet from proceeding smoothly.

[Fifth Embodiment]
A vertical screen according to a fifth embodiment in which the solar shading device of the present disclosure is embodied as a vertical screen will be described with reference to FIG. Between the vertical screen of the fifth embodiment and the roll screen of the fourth embodiment, the directions in which the screen is guided are mainly different from each other. Below, the structure different from the roll screen of 4th Embodiment is mainly demonstrated, the same code | symbol is attached | subjected to the structure corresponding to the structure of the roll screen of 4th Embodiment, and the description is abbreviate | omitted.

[Configuration of vertical screen]
As shown in FIG. 15, the support member 51 provided in the vertical screen is supported by a wall surface or a ceiling surface of a building, and is suspended by a guide rail 52 and a guide rail 52 that extend along the left-right direction as an example of the opening and closing direction. The runner 53 that can move along the extending direction of the guide rail 52 and the guide rail 21 are provided. The guide rail 21 in the fifth embodiment has a configuration in which the extending direction of the guide rail 21 in the fourth embodiment is converted into the left-right direction, and includes a front-side passage forming member 23F located on the front side of the screen 13 and the screen 13. And a rear passage forming member 23B located on the rear side. Such a support member is embodied in, for example, a curtain rail.

  The screen 13 is a screen suspended from the runner 53 and moves along with the runner 53 in the left-right direction. The screen 13 includes a screen body 13B and a plurality of upper outer edge portions 13EU. Each of the plurality of upper outer edge portions 13EU extends from the screen body 13B toward the upper side of the screen body 13B. Each of the plurality of upper outer edge portions 13EU is embodied in, for example, a bar or a plate made of a material such as a resin fixed to the upper edge of the screen body 13B, similarly to the outer edge portions 13EL and 13ER in the fourth embodiment. The In FIG. 15, a part of the plurality of upper outer edge portions 13EU is omitted for the sake of convenience in showing a positional relationship between the members in the longitudinal direction by cutting out a part of the vertical screen. The screen body 13B is arranged over the entire left and right direction with a gap along the left and right direction.

  Each of the plurality of upper outer edge portions 13EU is introduced into a guide passage 21G, which is a space between the front passage formation member 23F and the rear passage formation member 23B in the guide rail 21. The upper outer edge 13EU of the screen 13 is not limited to a line extending upward from the screen main body 13B, but may be a belt-shaped outer edge formed integrally with the screen main body 13B and continuous in the left-right direction. Alternatively, the outer edge portion described in the first to third embodiments may be used.

  Even in such a configuration, when the upper outer edge portion 13EU begins to come out of the space between the front passage forming member 23F and the rear passage forming member 23B, the front passage forming member 23F and the rear passage forming member 23B are separated from the upper outer edge portion. It deforms following the screen body 13B while contacting 13EU. As a result, each of the front-side passage forming member 23F and the rear-side passage forming member 23B is displaced from the guide position to a retaining position that increases the pressing force on the upper outer edge portion 13EU. Then, all of the upper outer edge portion 13EU deviates from the space between the front passage forming member 23F and the rear passage forming member 23B, and consequently the screen 13 is prevented from deviating from the guide rail.

The vertical screen of the fifth embodiment can be modified as follows.
As in the other embodiments, the movable portion is not limited to both the front passage forming member 23F and the rear passage forming member 23B, and may be either the front passage forming member 23F or the rear passage forming member 23B.

  The front side passage forming member 23F and the rear side passage forming member 23B may be configured by the front side passage forming member 33F and the rear side passage forming member 33B described in the second embodiment, or described in the third embodiment. The front side passage forming member 43F and the rear side passage forming member 43B may be configured. Further, the guide rail may be a combination of these.

  As shown in FIG. 16, the solar shading device may be a vertical pleated screen. At this time, the position where the upper outer edge portion 13EU is connected in the screen body 13B may be the fold line 13K of the pleat screen or may not be the fold line 13K. In addition, it is preferable that the position where the upper outer edge portion 13EU is connected in the screen body 13B is a portion that is not displaced in the front-rear direction when the pleat screen is opened and closed. With such a configuration, the pleat screen is prevented from deviating from the guide rail 21, and excessive friction between the front side passage forming member 23F or the rear side passage forming member 23B and the upper outer edge portion 13EU is suppressed. Therefore, the pleat clean folds smoothly.

Each of the above embodiments can be implemented with the following modifications.
The screen in each embodiment may be a light-shielding cloth, a light-transmitting cloth, or a mesh cloth for screen doors, and may be any shielding material that shields sunlight.

  -The space which a clamping part pinches is not restricted to the channel | path which guides a shielding material, What is necessary is just the space in which a shielding material is located. For example, two passage forming members may be arranged at positions where the shielding material is to be held, and the movable portion may simply function as a mechanism for holding the position of the shielding material.

  The configuration in which the holding force is increased by the displacement of the movable portion to the second position is not limited to the configuration in which the pressing force against the outer edge portion is increased, for example, the outer edge portion sandwiched between the holding portions has an uneven surface, and the movable portion is By displacing to the 2nd position, the uneven surface of an outer edge part and the surface of a movable part may be engaged, and the structure which a holding force increases by the engagement may be sufficient.

In each embodiment, two or more passage forming members may be arranged in the direction in which the screen spreads, or two or more passage forming members may be arranged in the front-rear direction of the screen.
As shown in FIG. 17, for example, in a vertical screen, if the two screens 13 are arranged along the front-rear direction, the two front-side passage forming members 43F are positioned on the front side of the two screens 13 and 2 The two rear side passage forming members 43 </ b> B may be located on the rear side of the two screens 13. With such a configuration, it is possible to suppress the screen 13 from slipping out of the guide passage 21G in each of the two screens 13.

  -In each embodiment, a movable part (front side passage formation member 23F, rear side passage formation member 23B, front side passage formation member 33F, rear side passage formation member 33B, front side passage formation member 43F, rear side passage formation member 43B) and guide A structure in which the rail 21 is integrally molded may be used.

  θ ... guide angle, C ... circle, K ... contact portion, L ... screen guide line, R ... guide diameter, T ... opposite portion, W, LG ... width, C1 ... connecting portion, C2 ... center axis, C3 ... center axis , Fa ... external force, LS, LW ... length, 11 ... frame, 12 ... winding shaft, 12A ... rotation center, 13 ... screen, 13E ... outer edge, 14 ... weight bar, 15 ... operation chain, 21 ... guide Rail, 21B ... rear guide wall, 21F ... front guide wall, 21G ... guide passage, 21i ... inner side, 21o ... outer side, 22 ... guide part, 22A ... guide inner side, 22B ... rear guide wall, 22F, 33F: front guide wall, 22S: constricted portion, 23B, 33B, 43B ... rear side passage forming member, 23F, 33F, 43F ... front side passage forming member, 23M, 33M ... support portion, 23S ... retaining plate, 33D ... regulation Part, 33S ... retaining cam, 43S ... retaining lever Cam, 44 ... output proximal end 45 ... cam surface, 46 ... input unit.

Claims (10)

A shielding material;
A clamping part capable of sandwiching an outer edge part of the shielding material,
The clamping part is
A movable portion that is displaced to a first position that allows movement of the outer edge portion in a space that sandwiches the outer edge portion, and a second position that increases a holding force for the outer edge portion than the first position;
The movable part is
A solar radiation shielding device that is disposed at a position where it can come into contact with the shielding material in the middle of deviating from the space, and is displaced from the first position to the second position following the shielding material in the middle of deviating from the space. A guide rail having a shape extending along one extending direction and guiding the outer edge portion along the extending direction;
The guide rail includes the clamping portion configured by two passage forming members,
At least one of the two passage forming members is the movable portion;
The solar radiation shielding device according to claim 1, wherein the two passage forming members guide the movement of the outer edge portion along the extending direction at the first position. The solar radiation shielding device according to claim 1, wherein the movable portion increases the holding force by pressing the shielding material at the second position. The movable portion is a cam having a cam surface that rotates about an axis, and a portion facing the outer edge portion on the cam surface is a facing portion that can press the outer edge portion,
In the state where the cam surface is rotated from the first position and located at the second position, the distance between the facing portion and the shaft is greater than in the state where the cam surface is located at the first position. The solar radiation shielding apparatus as described in any one of Claim 1 to 3. The movable portion is connected to the cam surface and includes an input end for inputting a rotational force to the cam surface.
The input end is located on the center side of the shielding material with respect to the cam surface, and constitutes a portion that contacts the shielding material in the middle of deviating from the space,
The solar radiation shielding device according to claim 4, wherein the cam surface is displaced from the first position to the second position when the shielding material moving in a direction intersecting a surface direction of the shielding material pushes the input end. . The said opposing part comprises the part which contacts the said shielding material in the middle of deviating from the said space, and follows the said outer edge part by friction with the said outer edge part in the middle of deviating from the said space, and the said opposing part. Or the solar radiation shielding apparatus of 5. The solar radiation shielding device according to any one of claims 4 to 6, wherein the cam surface is an uneven surface that is a repetition of a protrusion protruding toward the outer edge portion. The movable portion is an elastic body that elastically deforms following the shielding material by friction with the outer edge portion in the middle of deviating from the space, and presses the outer edge portion by an elastic force due to elastic deformation. The solar radiation shielding apparatus as described in any one of 3. The two passage forming members are one passage portion;
The solar radiation shielding device according to claim 2, wherein the guide rail includes a plurality of the passage portions arranged along the extending direction. The movable part is
When the movable portion is located at the second position, a tension exceeding a frictional force caused by pressing against the outer edge portion acts on the shielding material, thereby allowing the shielding material to deviate from the space. The solar radiation shielding apparatus as described in any one of 1 to 9.

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