Roller blinds

Abstract

To provide a roller screen that can improve light-blocking properties. [Solution] A screen 30 that blocks external light, The system includes a shielding mechanism 40 for extending and retracting the screen 30, a weight bar section 70 attached to the lower end of the screen 30 to apply downward tension to the screen 30, and a guide rail section 60 which has a guide passage 61a into which the outer edge of the screen 30 is inserted, and which guides the raising and lowering of the screen 30 while maintaining the inserted state of the outer edge of the screen 30, with both longitudinal ends of the weight bar section 70 inserted into the guide passage 61a.

Description

Technical Field

[0001] The present invention relates to a roll screen.

Background Art

[0002] Among roll screens, there are types with excellent shielding properties. As such a roll screen, for example, there is one disclosed in Patent Document 1. In Patent Document 1, a weight bar (11) is attached to the lower end of a screen (10), and a movable light-shielding material (5) is provided at the lower end of the weight bar (11). The upper end portion (50) of the movable light-shielding material (5) is housed in the hollow portion (11A) of the weight bar (11), and the light-shielding material main body (51) of the movable light-shielding material (5) is exposed below the weight bar (11) through an opening (11B).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the configuration disclosed in Patent Document 1, when the movable light-shielding material (5) abuts on the lower frame (102), the movable light-shielding material (5) is deformed to perform light shielding. In this configuration, when the lower frame (102) is slightly inclined, the light shielding property is sufficient above the inclination. However, below the inclination, there may be a situation where the movable light-shielding material (5) does not abut on the lower frame (102), resulting in unevenness, and the light shielding property may be insufficient.

[0005] The present invention has been made based on the above circumstances, and an object thereof is to provide a roll screen capable of improving the light shielding property.

Means for Solving the Problems

[0006] To solve the above problems, according to a first aspect of the present invention, a roll screen is provided comprising: a screen that blocks external light; a shielding mechanism for extending and retracting the screen; a weight bar portion attached to the lower end of the screen and applying downward tension to the screen; a guide rail portion having an opening on the side into which the outer edge of the screen is inserted and a guide passage communicating with the opening, and guiding the raising and lowering of the screen while maintaining the inserted state of the outer edge of the screen; wherein both longitudinal ends of the weight bar portion are inserted into the guide passage, both longitudinal ends of the weight bar portion can be inserted into the guide passage through the opening, and both longitudinal ends of the weight bar portion have hook portions that function as retainers when inserted into the guide passage. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a roller screen that can improve light-blocking properties. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view showing the overall configuration of a roll screen according to one embodiment of the present invention, with the front cover removed. [Figure 2] Figure 1 is an exploded perspective view of the roller screen. [Figure 3] Figure 1 is a perspective view showing the configuration of the shielding mechanism of the roller screen. [Figure 4] Figure 1 shows the shape of the guide rail section of the roller screen, where (a) is a cross-sectional end view showing the guide rail section cut at an intermediate position in the height direction, and (b) is a view of the guide rail section from below with the bottom cap removed. [Figure 5] Figure 1 is a partial perspective view showing the weight bar section of the roller screen. [Figure 6] Figure 1 shows the configuration of the weight bar section of the roll screen, as well as a cross-sectional view showing the weight bar section cut along its width. [Figure 7] Figure 1 is a perspective view showing the configuration of the weight bar caps included in the roll screen. [Figure 8] Figure 6 shows the weight bar section, where the elastic tip of the outer cushion deforms upon contact with the installation site, and the inner cushion moves upward. [Figure 9] Figure 1 shows a roll screen where the longitudinal direction of the weight bar is inclined with respect to the installation site. [Modes for carrying out the invention]

[0009] Hereinafter, a roll screen 10 according to one embodiment of the present invention will be described with reference to the drawings. In the following description, the direction connecting the indoor and outdoor sides of the roll screen 10 will be defined as the front-to-back direction, with the front side in the front-to-back direction being the indoor side and the rear side in the front-to-back direction being the outdoor side.

[0010] (1. Regarding the configuration of the roller screen 10) Figure 1 is a perspective view showing the overall configuration of the roll screen 10 according to this embodiment, with the front cover 23 removed. Figure 2 is an exploded perspective view of the roll screen 10 shown in Figure 1. As shown in Figures 1 and 2, the roll screen 10 mainly consists of an upper frame portion 20, a screen 30, a shielding mechanism 40, a guide rail portion 60, and a weight bar portion 70.

[0011] (1-1. Regarding the upper frame section 20) The upper frame section 20 includes a base frame 21, an upper side cover 22, and a front cover 23. The base frame 21 is provided in a roughly L-shape when viewed from the side, and is a long frame member made of, for example, an aluminum-based metal.

[0012] The base frame 21 has a top plate portion 21a and a light-blocking side plate portion 21b that bends from the top plate portion 21a. The top plate portion 21a is a part that is attached to the upper frame of a window frame, for example, by screws at predetermined intervals. The light-blocking side plate portion 21b is located behind (towards the window) the screen 30 and extends sufficiently below the winding cylinder 44 of the shielding mechanism 40, which will be described later. This makes it possible to block external light (sunlight, streetlights, etc.) that enters through gaps above the screen 30.

[0013] The base frame 21 is usually shorter than the upper frame of the window frame, which creates a gap between the vertical frame of the window frame and the base frame 21 (light-shielding side plate portion 21b). Therefore, an upper side cover 22 is provided between the base frame 21 and the vertical frame of the window frame. The upper side cover 22 has a gap light-shielding portion 22a and a side fixing portion 22b that bends from the gap light-shielding portion 22a, and when viewed from above, the upper side cover 22 is provided in a roughly L-shape.

[0014] The gap-blocking portion 22a is the part that closes the gap formed between the vertical frame of the window frame and the light-blocking side plate portion 21b, and its vertical length is approximately the same as that of the light-blocking side plate portion 21b, forming a unified design with the light-blocking side plate portion 21b. The rear end of the side fixing portion 22b is continuous with the gap-blocking portion 22a. This side fixing portion 22b is the part that is fixed to the vertical frame of the window frame, for example, via screws.

[0015] As shown in Figure 1, the upper frame portion 20 is provided with a front cover 23 that extends over a pair of upper side covers 22. The front cover 23 is a component that covers parts such as the winding tube 44 so that they are not exposed to the outside. This front cover 23 enhances the design of the roll screen 10 and also protects the winding tube 44 and other components.

[0016] (1-2. Regarding Screen 30) As shown in FIGS. 1 and 2, the screen 30 is a rectangular fabric for blocking outside light that enters the room from outside, such as through a window. Note that the screen 30 corresponds to a shielding material. This screen 30 is wound around the winding shaft of the shielding mechanism 40. Both side portions of this screen 30 are sandwiched between the guide rails of the guide rail portion 60, preventing outside light from entering through both side portions of the screen 30. Further, a weight bar portion 70 is attached to the lower end of the screen 30, preventing outside light from entering through the lower end portion of the screen 30.

[0017] (1-3. Regarding the shielding mechanism 40) Next, the shielding mechanism 40 will be described. FIG. 3 is a perspective view showing the configuration of the shielding mechanism 40. In FIG. 3, the upper side of the screen 30 is shown together with the shielding mechanism 40. The shielding mechanism 40 is a mechanism for operating the opening and closing of the screen 30. This shielding mechanism 40 includes a mounting frame 41, a bracket 42, a side frame 43, a winding cylinder 44, and an operation unit 50.

[0018] The mounting frame 41 is a long frame disposed above the winding cylinder 44 in the present embodiment and is a member that supports the entire shielding mechanism 40. The bracket 42 is a member that is fixed to the top plate portion 21a of the base frame 21 while holding the mounting frame 41. More specifically, the bracket 42 is fixed to the top plate portion 21a via, for example, screws or the like. The bracket 42 has hook portions on both end sides in the front-rear direction, and the hook portions enter recesses located on the side portions of the mounting frame 41. Thereby, the bracket 42 holds the mounting frame 41. For this reason, the mounting frame 41 is fixed to the base frame 21 via the bracket 42.

[0019] The side frame 43 is fixed to both end sides of the mounting frame 41 and is a frame member that protrudes downward from the mounting frame 41. This side frame 43 pivotally supports both end sides of the winding cylinder 44 rotatably below the mounting frame 41.

[0020] The winding tube 44 is a long, cylindrical member used to wind up or unwind the screen 30 described above. To enable the winding of the screen 30, one end (upper end) of the screen 30 is fixed to the winding tube 44.

[0021] Furthermore, the operating section 50 is the part that controls the winding and unwinding of the screen 30 by rotating the winding cylinder 44. This operating section 50 includes an operating cord 51 and an operating pulley 52. ​​The operating cord 51 is, for example, a loop-shaped cord formed by connecting the ends of a ball chain with a joint. However, the operating cord 51 is not limited to being made of a ball chain.

[0022] Furthermore, the operating pulley 52 has a meshing portion (not shown), and when the operating cord 51 is wrapped around this meshing portion, the ball portion of the operating cord 51 engages with the meshing portion. The operating pulley 52 is attached to one end of the winding cylinder 44 and is a component that rotates in sync with the winding cylinder 44. Therefore, when the user pulls the operating cord 51, the winding cylinder 44 rotates together with the operating pulley 52, allowing the screen 30 to be wound up and unwound. Note that a reduction mechanism such as a gear may be provided between the operating pulley 52 and the winding cylinder 44.

[0023] (1-4. Regarding the guide rail section 60) Next, the guide rail section 60 will be described. Figure 4 shows the shape of the guide rail section 60, where (a) is a cross-sectional end view showing the guide rail section 60 cut at an intermediate position in the height direction, and (b) is a view of the guide rail section 60 from below with the lower cap removed. As shown in Figures 1, 2 and 4, the guide rail section 60 comprises a guide rail 61, an upper cap 62, a lower cap 63, mohair 65, and a cushion 66.

[0024] Of these, the guide rail 61 is a member that holds both outer edges of the screen 30 and guides the screen 30 in the vertical direction when it is raised or lowered, and is made of a material such as aluminum-based metal or resin. This guide rail 61 is erected so as to span the upper side cover 22 and the lower frame of the window frame, and is attached to the right vertical frame VF1 and the left vertical frame VF1, respectively, by means of screws.

[0025] The guide rail 61 is provided with a guide passage 61a enclosed by a wall. An opening 64 is also provided on the side of the guide rail 61 facing the screen 30. Therefore, by inserting the outer edge of the screen 30 into the guide passage 61a through the opening 64, the outer edge of the screen 30 is guided along the guide rail 61.

[0026] Furthermore, a mohair mounting portion 61b is provided on the inner wall surface of the guide rail 61. The mohair mounting portion 61b is the part to which the base of the mohair 65 is attached. The shape of the mohair mounting portion 61b is not particularly limited, but in this embodiment, a pair of U-shaped recesses face each other to form an opposing space, and the base of the mohair 65 is attached to this opposing space. As shown in Figure 4, this mohair mounting portion 61b is provided so as to protrude from one of the opposing inner walls of the guide rail 61 and from the opposing inner wall.

[0027] Furthermore, when mohair 65 is attached to each of the pair of mohair attachment points 61b, the mohair 65 is attached not perpendicular to the screen 30, but at an angle to the screen 30, so as to face both the screen 30 and the vertical frame VF1. This makes it easier for the force of contact between the mohair 65 and the screen 30 to be released in the direction of the vertical frame VF1. In addition, this configuration makes it easy to use mohair 65 of a longer length.

[0028] Furthermore, a cushion mounting portion 61c is provided on the inner wall surface of the guide rail 61, on the side of the opening 64 that is closer to the mohair mounting portion 61b. Similar to the mohair mounting portion 61b, this cushion mounting portion 61c is provided so as to protrude from one of the opposing inner walls of the guide rail 61 and from the opposing inner wall.

[0029] The cushion mounting portion 61c is the part to which the cushion 66 is attached. The shape of this cushion mounting portion 61c is not particularly limited, but in this embodiment, it is provided in a form in which the entrance to the recess is narrowed, such as having a roughly C-shaped cross-section.

[0030] Furthermore, the base end of the mohair 65 is attached to the mohair attachment portion 61b described above in a bundled state. The mohair 65 is a long-haired member whose tip spreads out radially, and is capable of blocking external light that wraps around the outer edge of the screen 30. In addition, the mohair 65 is provided so as to exert a certain biasing force when its tip comes into contact with the screen 30. As a result, the outer edge of the screen 30 is constantly subjected to a repulsive force against any force acting in the direction of movement, making it difficult for the screen 30 to come off the guide passage 61a.

[0031] (1-5. Regarding the weight bar section 70) Next, the weight bar section 70 will be described. Figure 5 is a partial perspective view showing the weight bar section 70. Figure 6 shows the configuration of the weight bar section 70 and is a cross-sectional view showing the weight bar section 70 cut along its width.

[0032] As shown in Figures 1, 2, and 5, a weight bar portion 70 is provided at the lower end of the screen 30. That is, by attaching the weight bar portion 70 to the lower end of the screen 30, tension is applied so that the screen 30 does not sag even when it is pulled out (rewound).

[0033] This weight bar section 70 comprises a weight bar 71, an outer cushion 72, an inner cushion 73, and a weight bar cap 80.

[0034] The weight bar 71 is a long, elongated member with openings at both ends into which the weight bar caps 80 are fitted (see Figure 2). This weight bar 71 is made of, for example, an aluminum-based metal or resin, and as shown in Figure 6, it is provided in a vertically elongated rectangular cylindrical shape, which is long in the vertical direction (up and down direction) but short in the width direction (front and back direction). In other words, the weight bar 71 is provided in a vertically elongated shape with a short width direction (front and back direction) in order to make it thin so that both ends in the longitudinal direction can be inserted into the guide passage 61a.

[0035] However, if both longitudinal ends of the weight bar 71 can be inserted into the guide passage 61a, the shape of the weight bar 71 is not limited to that shown in Figure 6, and various shapes such as oval or polygonal cross-sections can be adopted. Furthermore, if both longitudinal ends of the weight bar 71 are not inserted into the guide passage 61a, an even wider variety of shapes can be adopted.

[0036] The weight bar 71 is provided with a lower end holding space 71a, a cushion storage space 71b, a flange portion 71c, and a positioning space 71d. The lower end holding space 71a is a space in which the lower end of the screen 30 is stored and is provided on the upper side of the cylindrical weight bar 71. The lower end of the screen 30 is appropriately held in this lower end holding space 71a. An upper opening 71a1 is provided on the upper end surface side of the weight bar 71 (the upper surface side of the lower end holding space 71a), and the lower end of the screen 30 is inserted through this upper opening 71a1.

[0037] Furthermore, the cushion storage space 71b is a space into which the upper parts (upper cylindrical portion 72a and lower position restricting portion 73a) of the outer cushion 72 and inner cushion 73, respectively, which will be described later, fit, and is provided on the lower side of the cylindrical weight bar 71.

[0038] A lower opening 71c1 is provided on the lower end surface side of the weight bar 71 (the lower surface side of the cushion storage space 71b). The lower opening 71c1 is an opening for allowing the outer cushion 72 and inner cushion 73 to protrude, but if the width of the lower opening 71c1 is too wide, the upper sides of the outer cushion 72 and inner cushion 73 (the upper cylindrical portion 72a and the lower position restricting portion 73a) will come out of the cushion storage space 71b.

[0039] Therefore, a pair of flange portions 71c are provided on the lower end surface of the weight bar 71 so as to sandwich the lower opening 71c1. This narrows the opening width of the lower opening 71c1, preventing the upper parts of the outer cushion 72 and inner cushion 73 (upper cylindrical portion 72a and lower position restricting portion 73a) from coming out of the cushion storage space 71b.

[0040] Furthermore, a positioning space 71d is provided between the lower end holding space 71a and the cushion storage space 71b. The positioning space 71d is the space into which the locking portion 82 of the weight bar cap 80, which will be described later, is inserted. The lateral inner wall 71d1 that forms this positioning space 71d corresponds to the vertical dimension of the locking portion 82. Therefore, by inserting and fixing the locking portion 82, the weight bar cap 80 is also positioned relative to the weight bar 71.

[0041] Furthermore, a cap fixing portion 71e is provided inside the cushion storage space 71b described above. The cap fixing portion 71e is a part for fixing the weight bar cap 80, which will be described later, via a fastener such as a screw. The cap fixing portion 71e may be configured such that a screw thread is formed when the screw is turned in, or it may have a hook portion for attaching a fastener with a barb, and various other configurations can be adopted.

[0042] As shown in Figure 6, the upper part of the outer cushion 72 is housed in the cushion storage space 71b. The outer cushion 72 has an upper cylindrical portion 72a, a constricted portion 72b, and a pair of tip elastic portions 72c.

[0043] This outer cushion 72 is formed by two-color molding using resins of different hardnesses. More specifically, the upper cylindrical portion 72a is made of a resin that is harder than the pair of tip elastic portions 72c. On the other hand, the pair of tip elastic portions 72c are made of a resin that is less hard and more easily deformable.

[0044] Here, both ends of the weight bar 71 in the longitudinal direction are not closed but open. Therefore, the upper cylindrical portion 72a is inserted into the cushion storage space 71b through the openings at both ends of the weight bar 71 in the longitudinal direction. At this time, the long upper cylindrical portion 72a is gradually inserted along the longitudinal direction into the long cushion storage space 71b. If the hardness of the upper cylindrical portion 72a were low during this insertion process, the upper cylindrical portion 72a would deform inside the cushion storage space 71b, hindering insertion. However, as described above, since the hardness of the upper cylindrical portion 72a is higher than that of the pair of tip elastic portions 72c, it is possible to suppress such deformation that would hinder insertion.

[0045] The hardness of the aperture portion 72b may be the same as that of the upper cylindrical portion 72a, or the same as that of the pair of tip elastic portions 72c, or the hardness of the aperture portion 72b may change midway in the vertical direction.

[0046] Furthermore, the upper cylindrical portion 72a is a cylindrical part with a roughly rectangular cross-section, and its width dimension (dimension in the front-to-back direction) is set to be larger than the opening width of the lower opening 71c1 described above. Therefore, even if the upper cylindrical portion 72a tries to come out of the cushion storage space 71b through the lower opening 71c1, the upper cylindrical portion 72a interferes with the pair of flange portions 71c, preventing it from coming out of the lower opening 71c1. Note that the lower position restricting portion 73a of the inner cushion 73, which will be described later, is located inside the internal space 72a1 of the upper cylindrical portion 72a.

[0047] Furthermore, the constricted portion 72b is located between the upper cylindrical portion 72a and the pair of tip elastic portions 72c, and its width (front-to-back direction) is smaller than that of the upper cylindrical portion 72a and the pair of tip elastic portions 72c. This constricted portion 72b is located in the lower opening 71c1 described above. Therefore, the pair of flange portions 71c fit into the recess 72b1 located outside the constricted portion 72b, between the upper cylindrical portion 72a and the pair of tip elastic portions 72c. This prevents the outer cushion 72 from coming out of the cushion storage space 71b.

[0048] Furthermore, with this configuration, the pair of tip elastic parts 72c, described later, are in a state where they can easily undergo elastic deformation, with the constricted portion 72b (recess 72b1) and the pair of flange portions 71c acting as fulcrums.

[0049] Furthermore, an aperture communication passage 72b2 is provided on the inside of the aperture section 72b, through which the movable projection 73b, described later, is inserted. The aperture communication passage 72b2 corresponds to the opening.

[0050] Furthermore, the pair of elastic tip portions 72c are parts that deform easily when they come into contact with the lower frame of the window frame. This deformation prevents the formation of a gap between the pair of elastic tip portions 72c and the lower frame, thereby effectively preventing outside light from entering.

[0051] Here, the pair of tip elastic portions 72c are provided with a tip elastic portion 72c (front elastic portion) located in front of the inner cushion 73 in the front-rear direction, and a tip elastic portion 72c (rear elastic portion) located in rear of the inner cushion 73 in the front-rear direction. Therefore, the light-shielding performance is improved compared to a configuration in which the tip elastic portion 72c exists only in either the front or rear position.

[0052] Furthermore, each of the pair of tip elastic portions 72c is provided with a curved shape that extends downward from the constricted portion 72b toward the inner cushion 73. Therefore, an absorption space P1 is formed between each of the tip elastic portions 72c, the constricted portion 72b, and the inner cushion 73, which are surrounded by these components. As a result, each of the pair of tip elastic portions 72c elastically deforms in such a way that the volume of the absorption space P1 decreases.

[0053] Furthermore, during this elastic deformation, each tip elastic portion 72c can contact the lower frame in a planar manner with a predetermined width rather than linearly, thereby improving light shielding.

[0054] Furthermore, the inner cushion 73 is positioned between a pair of opposing tip elastic portions 72c. This inner cushion 73 has a lower position restricting portion 73a and a movable projection portion 73b, and is provided so that its cross-sectional shape is approximately T-shaped (see Figure 6). The lower position restricting portion 73a is the part positioned in the internal space 72a1 of the upper cylindrical portion 72a described above, and is the part that extends in the width direction (front-rear direction) more than the movable projection portion 73b. The width (front-rear direction) dimension of this lower position restricting portion 73a is set to be larger than the width of the throttling passage 72b2. Therefore, the lower position restricting portion 73a interferes with the bottom of the upper cylindrical portion 72a and is prevented from coming out of the upper cylindrical portion 72a.

[0055] Furthermore, the movable projection 73b is the portion that protrudes downward from the lower position restricting portion 73a. As shown in Figure 6, the movable projection 73b is thicker than the tip elastic portion 72c. Therefore, it is less prone to elastic deformation than the tip elastic portion 72c. Also, when the movable projection 73b is not in contact with the lower frame of the window frame or the floor surface (hereinafter referred to as the installation area), the movable projection 73b is positioned to protrude downward from the tip elastic portion 72c.

[0056] Here, the lower position restricting portion 73a is movable vertically by a predetermined stroke within the internal space 72a1. This vertical stroke can be set to such an extent that the protrusion of the movable projection portion 73b becomes sufficiently small, or to a position equivalent to that of the deformed tip elastic portion 72c. Therefore, even if the installation site is inclined along the longitudinal direction of the weight bar portion 70, the inner cushion 73 can contact the installation site while inclined.

[0057] The hardness of the inner cushion 73 may be higher than or the same as that of the aforementioned tip elastic portion 72c. Furthermore, the hardness of the lower position restricting portion 73a and the movable protrusion portion 73b may be the same or different. If the hardness of the lower position restricting portion 73a and the movable protrusion portion 73b are different, the inner cushion 73 may be formed by two-color molding.

[0058] Next, the weight bar cap 80 will be described. The weight bar cap 80 is attached to both ends of the weight bar 71 and is inserted into the guide passage 61a of the guide rail 61 described above. This insertion prevents both ends of the weight bar portion 70 in the longitudinal direction from coming out of the guide passage 61a, thereby preventing the outer edge of the screen 30 from coming out of the guide passage 61a. In addition, the insertion of the weight bar cap 80 into the guide passage 61a prevents a gap from forming on the lower end side of the outer edge of the screen 30, thereby improving light shielding performance.

[0059] Figure 7 is a perspective view showing the shape of the weight bar cap 80. As shown in Figure 7, the weight bar cap 80 has a mounting base 81, a locking portion 82, a screen storage portion 83, and a hook portion 84.

[0060] The mounting base 81 is located at both ends of the weight bar 71 in the longitudinal direction and is a base that abuts against the end face (referred to as the open end face 71f) when attached to the open end. The mounting base 81 is provided in the shape of a rectangular plate with a predetermined thickness, and an opening for inserting the screen 30 is provided in the area where the screen storage section 83 is provided.

[0061] The mounting base 81 is provided with a through hole (not shown). A fastener, such as a screw, is inserted into this through hole, and the fastener is locked into the cap fixing portion 71e of the weight bar 71, thereby enabling the weight bar cap 80 to be fixed to the end of the weight bar 71.

[0062] In Figure 7, a locking portion 82 protrudes from the mounting base 81 on the side that is inserted into the weight bar 71 (i.e., the side facing the center of the roll screen 10). This locking portion 82 is the part that is inserted into the positioning space 71d described above, and is provided on the front and rear sides in the front-to-back direction (width direction), respectively. However, instead of providing such a pair of locking portions 82, a configuration with only one wide locking portion may also be adopted.

[0063] The vertical dimension of the locking portion 82 corresponds to the vertical dimension of the aforementioned lateral inner wall 71d1. Furthermore, the front-to-back (width) dimension of the pair of locking portions 82 corresponds to the front-to-back (width) dimension of the positioning space 71d. Therefore, when the locking portion 82 is inserted into the positioning space 71d, positioning is achieved in both the vertical and front-to-back (width) directions.

[0064] Furthermore, a screen storage section 83 protrudes from the side of the mounting base 81 opposite to the side from which the locking section 82 protrudes (the outside). The screen storage section 83 is a part that positions the weight bar cap 80 relative to the screen 30 by inserting and storing the lower end and outer edge of the screen 30. For this reason, the screen storage section 83 is provided in a box shape with openings on the mounting base 81 side and the upper side, while the other sides are closed.

[0065] Furthermore, a hook portion 84 is provided on the lower side of the screen storage portion 83. In the configurations shown in Figures 5 and 7, a pair of hook portions 84 are provided, but if there is no functional impediment, only one hook portion may be provided instead of a pair.

[0066] This hook portion 84 functions as a retainer when inserted into the guide passage 61a of the guide rail 61. For this reason, a return portion 84a is provided at the tip of the protruding part of the hook portion 84, and this return portion 84a catches on the mohair attachment portion 61b and the cushion attachment portion 61c, thereby preventing the weight bar cap 80 and the screen 30 from coming out of the guide passage 61a.

[0067] Furthermore, the portion of the hook portion 84 that connects the return portion 84a to the mounting base portion 81 is a flexible deformation portion 84b. The flexible deformation portion 84b is a part that deforms by bending so that the pair of return portions 84a move toward each other, and is provided in the shape of a thin plate along the vertical direction and the longitudinal direction of the weight bar 71. The bending of this flexible deformation portion 84b makes it easier to insert the pair of return portions 84a into the guide passage 61a.

[0068] (2. Regarding the assembly of the roller screen 10) When assembling the roller screen 10, the top plate portion 21a of the base frame 21 is attached to the upper frame of the window frame, for example, via screws. The upper side cover 22 is also attached to the vertical frame of the window frame, for example, via screws. This ensures that light is blocked between the light-blocking side plate portion 21b and the vertical frame of the window frame.

[0069] In addition to the installation of the base frame 21 and upper side cover 22 described above, the guide rail 61 is fixed to the vertical frame of the window frame, for example, via screws, and the guide rail section 60 is fixed to the vertical frame.

[0070] Next, the bracket 42 of the shielding mechanism 40 to which the screen 30 is attached is fixed to the top plate portion 21a, for example, by screws. Then, while pulling out the screen 30 as needed, the hook portion 84 of the weight bar cap 80, which is pre-attached to the weight bar portion 70 on the lower end of the screen 30, is inserted into the guide passage 61a of the guide rail 61. During this insertion, the bending deformation portion 84b bends and deforms, allowing the pair of return portions 84a to move into the interior of the guide passage 61a.

[0071] Furthermore, before and after inserting the hook portion 84, the outer edge of the screen 30 is inserted into the guide passage 61a. As a result, the weight bar cap 80 is inserted into the inside of the guide passage 61a, and the outer edge of the screen 30 is also inserted into the inside of the guide passage 61a. In addition, as shown in Figure 4(b), both longitudinal ends of the weight bar portion 70 are also inserted into the guide passage 61a. Therefore, the screen 30 is less likely to come out of the guide passage 61a, and the light-shielding performance of the lower end of the screen 30 is also improved.

[0072] When assembling the weight bar section 70, the lower position restricting section 73a of the inner cushion 73 is first inserted into the internal space 72a1 of the upper cylindrical section 72a. With the weight bar 71 in this state, it is inserted into the cushion storage space 71b from the openings at both ends in the longitudinal direction of the weight bar 71. At this time, the equally long upper cylindrical section 72a is gradually inserted along the longitudinal direction into the equally long cushion storage space 71b.

[0073] Here, the outer cushion 72 is formed by two-color molding such that the hardness of the upper cylindrical portion 72a is higher than that of the pair of tip elastic portions 72c. Therefore, during the insertion of the upper cylindrical portion 72a, deformation of the upper cylindrical portion 72a within the lower end holding space 71a is prevented, which would hinder insertion.

[0074] (3. Regarding the function of roller screen 10) Next, the operation of the roller screen 10 described above will be explained below. When using the roller screen 10, the user operates the operation cord 51 of the operation unit 50 to roll up and unroll the screen 30. When the operation cord 51 is moved to one side in the vertical direction, the screen 30 is rolled up, and when the operation cord 51 is moved to the other side in the vertical direction, the screen 30 is unrolled.

[0075] During the raising and lowering of the screen 30, the outer edge of the screen 30 is contained within the guide passage 61a and follows the guide passage 61a. At this time, the outer edge of the screen 30 (both the front and back surfaces) is in contact with the mohair 65 within the guide passage 61a. Therefore, even if sunlight from outside tries to enter the room by circling around the outer edge of the screen 30 and the guide passage 61a, it is blocked by the mohair 65 in contact with the outer edge of the screen 30.

[0076] Furthermore, as the screen 30 is rewound, the elastic tip 72c of the outer cushion 72 of the weight bar section 70 and the movable projection 73b of the inner cushion 73 come into contact with the installation site. At this time, as shown in Figure 8, the elastic tip 72c of the outer cushion 72 deforms (collapses) due to the lateral pressure from the weight bar 71 side when it comes into contact with the installation site. In this case, the tip of the movable projection 73b of the inner cushion 73 also comes into contact with the installation surface, so the weight bar section 70 is equipped with a heavy light-shielding structure, improving the reliability of light shielding.

[0077] Furthermore, as described above, when the tip elastic portion 72c contacts the installation site in a deformed state, the contact area between the tip elastic portion 72c and the installation surface increases, making it possible to prevent external light from entering the room.

[0078] Furthermore, even if there are irregularities on the installation surface, the elastic tip portion 72c can flexibly deform to conform to such irregularities, thereby suppressing the entry of outside light into the room.

[0079] Figure 9 shows a state in which the longitudinal direction of the weight bar portion 70 is inclined with respect to the installation site. As shown in Figure 9, depending on the mounting method of the roll screen 10 and the shape of the installation site, there may be cases in which the longitudinal direction of the weight bar portion 70 is inclined with respect to the installation site. In such cases, as shown in Figure 9, a gap S1 may be formed between the tip elastic portion 72c of the outer cushion 72 and the installation site.

[0080] However, in this embodiment, the weight bar portion 70 is provided with an inner cushion 73 in addition to the outer cushion 72. The lower position restricting portion 73a of the inner cushion 73 is movable in the vertical direction by a predetermined stroke within the internal space 72a1. Moreover, as shown in Figure 6, when not in contact with the installation site, the movable protrusion 73b of the inner cushion 73 protrudes downward from the tip elastic portion 72c.

[0081] Therefore, as shown in Figure 9, the inner cushion 73 (movable protrusion 73b) can tilt itself to follow the inclined installation site and make contact with the installation site. This prevents external light from entering through the gap S1 between the outer cushion 72 (tip elastic part 72c) and the installation site.

[0082] (4. Variant) Although one embodiment of the present invention has been described above, the present invention can be modified in various ways without changing its essence.

[0083] In the above embodiment, the hook portion 84 is provided on the weight bar caps 80 at both ends in the longitudinal direction of the weight bar portion 70. However, the weight bar cap 80 provided at either end in the longitudinal direction may be configured without the hook portion 84.

[0084] Furthermore, in the above embodiment, the operating unit 50 is a manual type that is operated by pulling the operating cord 51 by hand. However, the roll screen 10 may also be equipped with a motor, and the screen 30 may be raised and lowered by driving this motor.

[0085] Furthermore, in the above embodiment, a retractable screen 30 is described as the shielding material. However, the shielding material is not limited to a retractable screen 30; it may also be a screen that can be folded in a zigzag shape, or any other shielding material.

[0086] Furthermore, in the above-described embodiment, the outer cushion is formed by two-color molding. However, either the upper cylindrical portion 72a or the tip elastic portion 72c may be a separate part, and they may be integrated by bonding or other means.

[0087] Furthermore, in the above-described embodiment, weight bar caps 80 are attached to both ends of the weight bar portion 70 in the longitudinal direction, and the weight bar caps 80 have hook portions 84 that function as a retainer when inserted into the guide passage 61a. However, a configuration in which the weight bar caps 80 are omitted may also be adopted. In this case, hook portions may be provided on both ends of the weight bar portion 70 in the longitudinal direction, and these hook portions may function as a retainer.

[0088] Furthermore, the weight bar cap 80 is provided with a hook portion 84, and the hook portion 84 is provided with a pair of flexible deformation portions 84b. When the hook portion 84 is inserted into the guide passage 61a, the pair of flexible deformation portions 84b elastically deform to move closer to each other. However, a configuration with only one flexible deformation portion is also acceptable. Alternatively, the hook portion 84 may be configured without a pair of flexible deformation portions 84b, for example, by having a portion corresponding to a pair of return portions 84a that rotates around a pivot axis. In this case, when inserting the hook portion 84 into the guide passage 61a, the pair of return portions 84a move closer to each other, and once the insertion of the hook portion 84 into the guide passage 61a is complete, the pair of return portions 84a move apart to function as a retainer.

[0089] In this configuration, for example, the pair of return portions 84a may be separated from each other by using magnetic force, or by inserting a separate member, or by using a spring member different from the bending deformation portion 84b to separate the pair of return portions 84a.

[0090] (5. Addendum) The contents described in the above-mentioned embodiment can be understood as follows, for example, and can produce the following effects. [1] That is, A screen 30 that blocks out external light, A shielding mechanism 40 for extending and retracting the screen 30, A weight bar portion 70 is attached to the lower end of the screen 30 and applies downward tension to the screen 30, The screen 30 has an opening 64 on its side into which the outer edge of the screen 30 is inserted, and a guide passage 61a that communicates with the opening 64, and a guide rail section 60 that guides the raising and lowering of the screen 30 while maintaining the inserted state of the outer edge of the screen 30, Equipped with, Both ends of the weight bar section 70 in the longitudinal direction are inserted into the guide passage 61a. Both longitudinal ends of the weight bar portion 70 can be inserted into the guide passage 61a through the opening 64. The weight bar portion 70 has hook portions 84 at both longitudinal ends that function as retainers when inserted into the guide passage 61a.

[0091] In this way, since both longitudinal ends of the weight bar portion 70 are inserted into the guide passage 61a, it is possible to prevent a gap from forming between the lower end and outer edge of the screen 30 and the installation site. As a result, external light is prevented from entering the room through the gap, and the light-blocking performance of the roll screen 10 can be improved.

[0092] Furthermore, since both ends of the weight bar section 70 in the longitudinal direction can be inserted into the guide passage 61a through openings 64 located on the sides of the guide rail section 60, it is not necessary to insert the hook section 84 from the top of the guide rail section 60, for example. This makes the insertion of the hook section 84 easier.

[0093] Furthermore, the presence of a hook portion 84 on the weight bar portion 70 effectively prevents the weight bar portion 70 from slipping out of the guide passage 61a. As a result, the weight bar portion 70 and the outer edge of the screen 30 are less likely to slip out of the guide passage 61a, thus maintaining good light-blocking performance of the roll screen 10.

[0094] [2] In addition, in the above embodiment, in the contents of [1] above, Preferably, the guide rail portion 60 is provided with mohair 65 that contacts the outer edge of the screen 30 and both longitudinal ends of the weight bar portion 70.

[0095] In this configuration, the mohair 65 contacts the outer edge of the screen 30 and both longitudinal ends of the weight bar portion 70 inside the guide passage 61a. As a result, it is possible to block external light that wraps around the outer edge of the screen 30 and the tip of the weight bar portion 70, further improving the light-blocking performance of the roll screen 10.

[0096] [3] In addition, the above embodiments include, in addition to the contents described in either [1] or [2] above, or a combination thereof, Weight bar caps 80 are attached to both ends of the weight bar section 70 in the longitudinal direction. The hook portion 84 is preferably provided on the weight bar cap 80.

[0097] In this way, the hook portion 84 is provided on the weight bar cap 80, which effectively prevents the weight bar cap 80 from coming out of the guide passage 61a. As a result, the outer edges of the weight bar cap 80 and the screen 30 are less likely to come out of the guide passage 61a, thus maintaining good light-blocking performance of the roll screen 10.

[0098] [4] In addition, in the above embodiment, in the contents of [3] above, A pair of hook portions 84 are provided. Preferably, each pair of hook portions 84 is provided with a return portion 84a that catches on a predetermined part inside the guide passage 61a, and a flexible deformation portion 84b that moves in a direction toward each other.

[0099] In this way, the hook portion 84 is provided with a return portion 84a, which further prevents the weight bar cap 80 from coming out of the guide passage 61a. As a result, the outer edges of the weight bar cap 80 and the screen 30 are less likely to come out of the guide passage 61a, thus maintaining good light-blocking performance of the roll screen 10.

[0100] Furthermore, the presence of the flexible deformation portion 84b makes it easier to insert the return portions 84a on the pair of hook portions 84 into the guide passage 61a by bending this flexible deformation portion 84b. Also, by bending the flexible deformation portion 84b in a direction that brings the pair of hook portions 84 closer together, the pair of hook portions 84 inserted into the guide passage 61a can be removed from the guide passage 61a, making maintenance and repair work easier.

[0101] [5] In addition, the above embodiments include, in addition to the contents described in either [3] or [4] above, or a combination thereof, Preferably, the weight bar cap 80 is provided with a screen storage section 83 into which the lower end and outer edge of the screen 30 is inserted and stored.

[0102] With this configuration, the lower end and outer edge of the screen 30 are held by the screen storage section 83, which further improves the light-blocking performance of the roll screen 10. [Explanation of Symbols]

[0103] 10...Roller screen, 20...Upper frame section, 21...Base frame, 21a...Top plate section, 21b...Shading side plate section, 22...Upper side cover, 22a...Gap shading section, 22b...Side fixing section, 23...Front cover, 30...Screen, 40...Shading mechanism, 41...Mounting frame, 42...Bracket, 43...Side frame, 44...Winding tube, 50...Operating section, 51...Operating cord, 52...Operating pulley, 60...Guide rail section, 61...Guide rail, 61a...Guide passage, 61b...Mohair mounting section, 61c...Cushion mounting section, 62...Upper cap, 63...Lower cap, 64...Opening, 65...Mohair, 66...Cushion, 70...Weight bar section, 71...Weight bar -, 71a...Lower end holding space, 71a1...Upper opening, 71b...Cushion storage space, 71c...Flange part, 71c1...Lower opening, 71d...Positioning space, 71d1...Side inner wall, 71e...Cap fixing part, 71f...Opening end face, 72...Outer cushion, 72a...Upper cylindrical part, 72a1...Internal space, 72b...Constriction part, 72b1...Recess, 72b2...Constriction connecting passage, 72c...Tip elastic part, 73...Inner cushion, 73a...Lower position regulating part, 73b...Movable protrusion, 80...Weight bar cap, 81...Mounting base, 82...Locking part, 83...Screen storage part, 84...Hook part, 84a...Return part, 84b...Flexible deformation part, P1...Absorption space, S1...Gap, VF1...Vertical frame

Claims

1. A screen that blocks out external light, A shielding mechanism for extending and retracting the aforementioned screen, A weight bar portion is attached to the lower end of the screen and applies downward tension to the screen, The screen has an opening on its side for inserting the outer edge and a guide passage communicating with the opening, and the guide rail section guides the raising and lowering of the screen while maintaining the inserted state of the outer edge of the screen during the raising and lowering of the screen. Equipped with, Both ends of the weight bar portion in the longitudinal direction are inserted into the guide passage, Both longitudinal ends of the weight bar portion can be inserted into the guide passage through the opening. The longitudinal ends of the weight bar portion have hook portions that function as retainers when inserted into the guide passage. A roller screen characterized by the following features.

2. A roller screen according to claim 1, The guide rail portion is provided with mohair that contacts the outer edge of the screen and both longitudinal ends of the weight bar portion. A roller screen characterized by the following features.

3. A roller screen according to claim 1, Weight bar caps are attached to both ends of the weight bar section in the longitudinal direction. The aforementioned hook portion is provided on the weight bar cap. A roller screen characterized by the following features.

4. A roller screen according to claim 3, The aforementioned hook portion is provided in a pair, Each pair of hook portions is provided with a return portion that catches on a predetermined part inside the guide passage, and a flexible deformation portion that deforms so as to move in a direction that brings the pair of hook portions closer to each other. A roller screen characterized by the following features.

5. A roller screen according to claim 3 or 4, The weight bar cap is provided with a screen storage section into which the lower end and outer edge of the screen are inserted and stored. A roller screen characterized by the following features.

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