Roll screen

Abstract

To provide a roll screen which can stably support a shaft part of a winding pipe with respect to a bearing part of a side bracket while the shaft part being able to be inserted from below.SOLUTION: In a roll screen 100, a bearing part 140 for holding a shaft part 122 of a winding pipe 120 is provided at least at one side bracket 130 out of a pair of side brackets 130. The bearing part 140 includes: a storage reception part 150 which opens in a downward recess shape, and can store the shaft part 122 via an opening 150a; and a rotary member 160 which can switch the opening 150a between an open state and a closed state. In the open state, the rotary member 160 is separated from the opening 150a of the storage reception part 150, and the shaft part 122 can be inserted into / extracted from the opening 150a, and in the closed state, the opening 150a of the storage reception part 150 is covered, and the movement of the shaft part 122 in a direction of being separated from the opening 150a can be restricted.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a roller blind. [Background technology]

[0002] A conventional roller blind is disclosed in Japanese Patent Laid-Open No. 2002-174084 (Patent Document 1). The roller blind disclosed in this document has a core shaft of a screen winding shaft inserted through an opening into a support hole provided in a support bracket, and the opening is closed by a first holding means to which an elastic force is applied by a biasing member, thereby supporting the core shaft so that it cannot move in the axial direction. The first holding means is provided so as to be rotatable in a direction perpendicular to the support bracket, and this first holding means is provided with a protrusion that allows it to be held by the support bracket in the opening closing position.

[0003] With this, when the core shaft of the winding shaft is inserted into the support hole through the opening that opens downward, the first holding means (shaft block) automatically rotates due to the biasing force of the biasing member, closing the opening of the support hole. This makes it possible to easily attach the winding shaft to the support bracket and to reliably hold the winding shaft in the support bracket. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-174084 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the roller blind disclosed in Patent Document 1 has a structure in which the shaft block serving as the first holding means bears the load of the winding pipe, and the load is received by a pair of rotating shafts that are rotatably supported by the support bracket. This poses a durability issue when installing a heavy product.

[0006] The present invention was made in consideration of these problems, and its purpose is to provide a roller blind that can be stably supported while allowing the shaft portion of the winding pipe to be inserted into the bearing portion of the side bracket from below. [Means for solving the problem]

[0007] In order to solve the above problems, according to the present invention, there is provided a roll screen comprising: a winding pipe capable of raising and lowering the screen; and a pair of side brackets that non-rotatably hold shafts protruding from both ends of the winding pipe, wherein at least one of the pair of side brackets is provided with a bearing portion that holds the shaft, and the bearing portion comprises a receiving portion that opens concavely downward and can receive the shaft through the opening, and an opening / closing portion that can switch the opening between an open state and a closed state, wherein in the open state, the opening / closing portion is separated from the opening of the receiving portion so that the shaft can be inserted and removed from the opening, and in the closed state, the opening of the receiving portion is covered so that the movement of the shaft in the direction of removal from the opening is restricted.

[0008] According to this configuration, it is possible to provide a roller blind that can stably support the shaft portion of the winding pipe while allowing it to be inserted into the bearing portion of the side bracket from below.

[0009] The present invention has various applications. For example, the opening / closing section may be a rotating member that can rotate around the axis of the take-up pipe, the rotating member may be formed with a support piece that supports the shaft, and the rotating member may be capable of switching the opening of the receiving section between the open state and the closed state depending on the rotation position. With this configuration, the shaft of the take-up pipe can be inserted into the bearing portion of the side bracket from below, while the rotating member is rotatable around the axis of the take-up pipe, thereby providing a wide rotation range. As a result, the rotating member can be made of a durable material with a thickness corresponding to the length of the shaft, and the shaft of the take-up pipe can be stably supported by the bearing portion of the side bracket.

[0010] The rotating member may be provided with a restricting piece extending in a direction perpendicular to the axial direction of the shaft portion, and a fixing member fixable to the side bracket may restrict movement of the restricting piece. With this configuration, the fixing member restricts movement of the restricting piece, thereby restricting rotation of the rotating member. Furthermore, when the rotating member supports the shaft portion of the take-up pipe, the restricting piece distributes and bears the load, thereby improving the durability of the bearing portion.

[0011] The fixed member may be capable of restricting the rotation of the rotating member in either the open state or the closed state. With this configuration, the fixed member restricts the rotation of the rotating member and maintains the opening of the receiving portion in either the open state or the closed state. In particular, since the rotating member can be maintained in the open state when inserting the shaft portion of the winding pipe into the receiving portion, installation is facilitated. Furthermore, when the movement of the restricting piece by the fixed member is released, the rotating member can transition to the closed state under its own weight.

[0012] Furthermore, the rotating member may be rotatable around a rotation axis relative to the side bracket, the rotation axis being located above the bearing portion, and a mounting piece may be provided below the rotation axis to be placed on the upper surface of the accommodation receiver in the closed state. With this configuration, the mounting piece is supported on the upper surface of the accommodation receiver (bearing portion), so that the rotating member can be supported together with the fixed member, and the weight of the winding shaft placed on the rotating member can be distributed to the bearing, thereby improving the durability of the bearing portion.

[0013] Furthermore, a restricting member whose position is adjustable may be provided on the side bracket, and the restricting member may come into contact with the lower surface of the support piece to restrict the rotation of the rotating member. With this configuration, the restricting member restricts the downward movement of the support piece, thereby restricting the rotation of the rotating member, and the restricting member distributes the weight of the winding shaft applied to the rotating member, thereby improving the durability of the bearing portion.

[0014] The opening / closing section may be a sliding member that is slidable below the opening of the storage-receiving section, and the sliding member may be configured to switch the opening of the storage-receiving section between the open state and the closed state depending on the sliding position. With this configuration, the opening of the storage-receiving section can be easily switched between the open state and the closed state by simply sliding the sliding member.

[0015] Furthermore, a locking pin may be fixed in the receiving portion so as to be perpendicular to the shaft portion, and the locking pin may be insertable into a hole formed in the shaft portion. With this configuration, simply inserting the shaft portion into the receiving portion inserts the locking pin into the hole in the shaft portion, thereby restricting axial movement of the take-up pipe relative to the side bracket. [Effects of the Invention]

[0016] According to the present invention, a roller blind is provided that can stably support the shaft portion of the winding pipe while allowing it to be inserted into the bearing portion of the side bracket from below. Other effects of the present invention will be described in the detailed description of the invention below. [Brief explanation of the drawings]

[0017] [Figure 1] 1A and 1B are diagrams showing the overall configuration of a roller blind 100 of a first embodiment, in which (a) is a perspective view showing the overall configuration, and (b) is a rear view of the periphery of a side bracket 130. FIG. [Figure 2] 10A and 10B are diagrams for explaining the bearing portion 140, in which (a) is a perspective view in which the rotating member 160 is omitted, and (b) is a perspective view in which the rotating member 160 is attached. [Figure 3] This is a cross-sectional view equivalent to AA showing the procedure for fixing the shaft portion 122 to the bearing portion 140, where (a) shows the state in which the shaft portion 122 is inserted into the receiving portion 150, (b) shows the state in which the rotating member 160 is being rotated, and (c) shows the state in which the rotation of the rotating member 160 is restricted. [Figure 4] 10A and 10B are longitudinal cross-sectional views showing the procedure for fixing the shaft portion 122 to the bearing portion 140, where (a) shows the state in which the shaft portion 122 of the winding pipe is inserted into the bearing portion 140 from below, and (b) shows the state in which the shaft portion 122 is supported by the support piece 162 of the rotating member 160. [Figure 5] 10A and 10B show the procedure for fixing the shaft portion 122 to the bearing portion 240 of the roller blind 200 of the second embodiment, and are cross-sectional views of the pivoting member 260, where (a) shows the state in which the shaft portion 122 is inserted into the receiving portion 250, (b) shows the state in which the pivoting member 260 is being pivoted, (c) shows the state in which the pivoting of the support piece 262 is restricted, and (d) shows the state in which the pivoting of the restricting piece 267 is restricted. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this specification and drawings, components having substantially the same functional configurations are designated by the same reference numerals, and redundant explanations will be omitted.

[0019] (First embodiment) A roller blind 100 according to a first embodiment will be described. In this embodiment, the surface facing the room when the roller blind 100 is installed will be referred to as the front, the surface facing the outside of the room as the back, and the direction consisting of the front and back as the front-to-rear direction. First, the configuration of the roller blind 100 will be described with reference to FIG. 1. FIG. 1 shows the overall configuration of the roller blind 100, with (a) being a perspective view showing the overall configuration and (b) being a rear view of the area around a side bracket 130. As shown in FIG. 1, the roller blind 100 includes a take-up pipe 120 capable of raising and lowering the screen 110, and a pair of side brackets 130 that non-rotatably hold shafts 122 protruding from both ends of the take-up pipe 120. At least one of the pair of side brackets 130 is provided with a bearing 140 that holds the shaft 122. Each component of the roller blind 100 will be described below.

[0020] (Screen 110) 1(a), the upper end of the screen 110 is connected to a winding pipe 120, and the screen 110 is wound on or unwound from the winding pipe 120 depending on the rotation direction of the winding pipe 120. A weight bar 112 is connected to the lower end of the screen 110.

[0021] (winding pipe 120) The winding pipe 120 opens and closes the screen 110 by winding and unwinding it. As shown in FIG. 1, the winding pipe 120 has shafts 122 protruding from both ends thereof, which are non-rotatably held by a pair of side brackets 130 via bearings 140. More specifically, the shafts 122 have a square cross section and are held by the bearings 140 attached to the side brackets 130. The bearings 140 will be described later. The shaft 122 protruding from one end of the winding pipe 120 is provided at the end of a motor 124 inside the winding pipe 120. A hole 122a is formed in the shaft 122 and penetrates it in the vertical direction (see FIG. 3). The winding pipe 120 is rotated by the motor 124 to raise and lower the screen 110.

[0022] (Side bracket 130) The side brackets 130 non-rotatably hold the shafts 122 protruding from both ends of the winding pipe 120. As shown in Fig. 1, the side brackets 130 are configured in a roughly L-shape, and the roller blind 100 is attached to a window frame or the like (not shown) by fixing the mounting portion 130a of the upper piece to the window frame or the like. The bearing portion 140 mentioned above is attached to the base portion 130b of the vertical piece of the side bracket 130.

[0023] (Bearing part 140) The bearing portion 140 is a characteristic feature of this embodiment, and holds the shaft portion 122 of the winding pipe 120. The configuration of the bearing portion 140 will be described with reference to FIG. 2 in addition to FIG. 1. FIG. 2 is a diagram for explaining the bearing portion 140, where (a) is a perspective view without the rotating member 160, and (b) is a perspective view with the rotating member 160 attached. As shown in FIGS. 1 and 2, the bearing portion 140 is made up of a receiving portion 150 that opens downward in a concave shape and can receive the shaft portion 122 through an opening 150a, and a rotating member 160 (opening / closing portion) that can switch the opening 150a between an open state and a closed state. In the open state, the rotating member 160 is separated from the opening 150a of the receiving portion 150, allowing the shaft portion 122 to be inserted into and removed from the opening 150a, and in the closed state, the rotating member 160 covers the opening 150a of the receiving portion 150, allowing the shaft portion 122 to restrict movement in the direction of removal from the opening 150a. The bearing portion 140 may be provided on both or one of the pair of side brackets 130.

[0024] (Receiving portion 150) The receiving portion 150 is a portion in which the shaft portion 122 of the winding pipe 120 is received. As shown in FIG. 2, the receiving portion 150 is fixed to the base portion 130b. The receiving portion 150 is formed in a downwardly concave shape and can receive the shaft portion 122 through a lower opening 150a. The receiving portion 150 is open at the lower opening 150a and in the axial direction of the winding pipe 120. In this embodiment, the opening 150a refers to the lower opening. Fixing portions 152, 154 are formed to protrude in the front-rear direction from the receiving portion 150. The front and rear fixing portions 152, 154 are screwed to the base portion 130b, thereby fixing the receiving portion 150 to the side bracket 130. A screw connection portion 156 is formed extending from the lower end of the rear fixing portion 154 to the tip of the receiving portion 150. The screw connection portion 156 is formed with a screw hole (not shown) into which a screw 169 (fixing member) to be described later is screwed.

[0025] A locking pin 158 is fixed inside the receiving portion 150, extending downward from the ceiling surface of the receiving portion 150 in a direction perpendicular to the shaft portion 122. The locking pin 158 can be inserted into the hole 122a of the shaft portion 122.

[0026] (Rotating member 160) The rotating member 160 is capable of switching the opening 150a between an open state and a closed state. In the open state, the rotating member 160 is separated from the opening 150a of the accommodating-receiving portion 150, allowing the shaft portion 122 to be inserted into and removed from the opening 150a. In the closed state, the rotating member 160 covers the opening 150a of the accommodating-receiving portion 150, preventing the shaft portion 122 from moving in a direction away from the opening 150a. As shown in FIG. 2, the rotating member 160 is configured to be rotatable about the axis of the take-up pipe 120. The rotating member 160 is configured in a generally U-shape, with one piece being a support piece 162 that supports the shaft portion 122 and the other piece facing the support piece 162 being a mounting piece 164 that can be placed on the top of the accommodating-receiving portion 150. The support piece 162 and the mounting piece 164 are connected by a connecting piece 166.

[0027] A large rotation range can be secured by making the rotating member 160 rotatable about an axis in the axial direction of the take up pipe 120. As a result, the rotating member 160 can be made of a durable member having a thickness corresponding to the length of the shaft portion 122, and the shaft portion 122 of the take up pipe 120 can be stably supported by the bearing portion 140.

[0028] The support piece 162 supports the shaft portion 122. As shown in Fig. 2, the support piece 162 is disposed below the receiving portion 150 depending on the rotational position of the rotating member 160, and opens or closes the opening 150a. The lower surface of the tip of the support piece 162 is tapered.

[0029] As shown in FIG. 2, the mounting piece 164 is rotatably supported on a rotation shaft 168 that protrudes from the base 130b above the receiving portion 150. A restricting piece 167 is provided from the mounting piece 164 and extends in a direction perpendicular to the axial direction of the shaft portion 122. The restricting piece 167 is in the shape of a quadrangular prism, and a tapered surface 167a is formed at the top of the tip. The movement of the restricting piece 167 is restricted when the tapered surface 167a or the bottom surface 167b abuts against the tip of the screw 169. When the tapered surface 167a abuts against the tip of the screw 169, the counterclockwise rotation of the rotating member 160 is restricted, and when the bottom surface 167b abuts against the tip of the screw 169, the clockwise rotation of the rotating member 160 is restricted.

[0030] As shown in FIG. 2, the screw 169 is threaded into the screw hole of the screw connection portion 156, and when raised, it abuts against the regulating piece 167 to regulate the rotation of the rotating member 160, and when lowered, it moves away from the regulating piece 167 to allow the rotating member 160 to rotate freely.

[0031] As shown in FIG. 2, the connecting piece 166 is configured to come into contact with the side surface of the receiving portion 150 when the shaft portion 122 is held by the rotating member 160.

[0032] The configuration of the roller blind 100 of this embodiment has been described above. Next, the procedure for fixing the shaft portion 122 to the bearing portion 140 of this embodiment will be described with reference to Figs. 3 and 4. Fig. 3 is a cross-sectional view equivalent to AA showing the procedure for fixing the shaft portion 122 to the bearing portion 140. Fig. 4 is a vertical cross-sectional view showing the procedure for fixing the shaft portion 122 to the bearing portion 140.

[0033] First, as shown in FIGS. 3A and 4A, the screw 169 is retracted (the tip is lowered) to make the rotating member 160 rotatable about the rotation shaft 168. Then, the rotating member 160 is rotated clockwise until the opening 150a of the receiving portion 150 is opened, retracting the support piece 162. Thereafter, the screw 169 is advanced (the tip is raised) so that the tip of the screw 169 abuts against the tapered surface 167a of the restricting piece 167, restricting the counterclockwise rotation of the rotating member 160 and maintaining the opening 150a of the receiving portion 150 in an open state. Since the restricting piece 167 has the tapered surface 167a, the screw 169 can be advanced to a position where it abuts against the tapered surface 167a. As a result, the area where the screw 169 abuts against the restricting piece 167 can be increased, ensuring that the open state can be maintained reliably. Then, the shaft portion 122 is arranged so that the hole portion 122a is arranged in the vertical direction, and the position of the hole portion 122a is aligned with the position of the locking pin 158. Then, the shaft portion 122 is inserted into the receiving portion 150 from below.

[0034] Next, as shown in FIG. 3(b), the shaft portion 122 is accommodated in the receiving portion 150 so that the locking pin 158 is inserted into the hole portion 122a. Because the locking pin 158 is locked in the hole portion 122a, the axial movement of the shaft portion 122 is restricted. After this, when the screw 169 is retracted, the tip of the screw 169 moves away from the tapered surface 167a of the restricting piece 167, and the rotating member 160 becomes rotatable. Then, the rotating member 160 is rotated counterclockwise so that the support piece 162 closes the opening 150a. The rotating member 160 may be rotated by its own weight or may be rotated manually.

[0035] Next, as shown in FIGS. 3(c) and 4(b), the rotating member 160 is rotated counterclockwise to a position where the support piece 162 closes the opening 150a of the receiving portion 150. Thus, the support piece 162 supports the shaft portion 122 of the winding pipe 120. Furthermore, since the locking pin 158 is inserted into the hole 122a of the shaft portion 122, axial movement of the shaft portion 122 is restricted. The mounting piece 164 is disposed in contact with and along the upper surface of the receiving portion 150. Thus, the mounting piece 164 is supported by the upper surface of the receiving portion 150. In this state, the rotation of the rotating member 160 is not restricted, but because the load position on the support piece 162 and the axial position of the rotation shaft 168 are substantially the same in the front-to-rear direction, the rotating member 160 can be temporarily stopped and does not rotate freely, improving workability. Thereafter, the screw 169 is tightened and moved forward, and the tip of the screw 169 abuts against the bottom surface 167b of the restricting piece 167, restricting the downward rotation of the restricting piece 167. Thus, the rotation of the rotating member 160 is restricted so that the opening 150a is not opened while the shaft portion 122 is supported.

[0036] (Effects of the first embodiment) As described above, according to this embodiment, the shaft 122 of the take up pipe 120 can be inserted into the bearing 140 of the side bracket 130 from below, while the rotating member 160 is rotatable about the axis of the take up pipe 120, thereby providing a large rotation range. As a result, the rotating member 160 can be made of a durable member having a thickness corresponding to the length of the shaft 122, and the shaft 122 of the take up pipe 120 can be stably supported by the bearing 140.

[0037] Furthermore, the screw 169 restricts the movement of the restricting piece 167, thereby restricting the rotation of the rotating member 160. Furthermore, when the rotating member 160 supports the shaft portion 122 of the take-up pipe 120, the restricting piece 167 receives the load in a distributed manner, thereby improving the durability of the bearing portion 140.

[0038] Furthermore, whether opening 150a of accommodating receptacle 150 is in the open state or the closed state, screw 169 restricts the rotation of rotating member 160, making it possible to maintain either state. In particular, when inserting shaft 122 of winding pipe 120 into accommodating receptacle 150, installation is facilitated because rotating member 160 can be maintained in the open state. Furthermore, when movement of restricting piece 167 by screw 169 is released, rotating member 160 can be shifted to the closed state by its own weight.

[0039] Furthermore, by supporting the mounting piece 164 on the upper surface of the receiving portion 150, the rotating member 160 can be supported together with the screw 169. In this way, by distributing the weight of the shaft portion 122 that is applied to the rotating member 160 to the bearing portion 140, the durability of the bearing portion 140 can be improved.

[0040] Furthermore, simply by inserting the shaft portion 122 into the receiving portion 150, the locking pin 158 is inserted into the hole 122a of the shaft portion 122, and the axial movement of the take-up pipe 120 relative to the side bracket 130 can be restricted.

[0041] (Second embodiment) A roller blind 200 according to a second embodiment will be described with reference to Fig. 5. Fig. 5 is a cross-sectional view of a rotating member 260, showing the procedure for fixing the shaft portion 122 to the bearing portion 240 of the roller blind 200 of this embodiment. This embodiment differs from the first embodiment in the configuration of the bearing portion 240. This embodiment will be described mainly focusing on the differences from the first embodiment. Components having substantially the same functional configuration will be assigned the same reference numerals, and redundant description may be omitted.

[0042] As shown in Fig. 5, the roller shade 200 of this embodiment differs from the first embodiment mainly in the configuration of the rotating member 260 of the bearing unit 240. The rotating member 260 has a support piece 262 whose tip is configured as a bifurcated tip portion 262a, and the bifurcated tip portion 262a extends to a position where a screw 269 is disposed. A nut 270 (restricting member) is provided on the screw 269 below the screw connecting portion 256, and the bifurcated tip portion 262a is disposed between the screw connecting portion 256 and the nut 270. The restricting piece 267 is configured in a square prism shape without the tapered surface 167a formed thereon as in the first embodiment. Note that the restricting piece 267 may also be configured in a square prism shape with the tapered surface 167a formed thereon as in the first embodiment.

[0043] The configuration of the roller blind 200 of this embodiment has been described above. The procedure for fixing the shaft portion 122 to the bearing portion 240 will now be described with reference to FIG.

[0044] First, as shown in FIG. 5(a), the screw 269 is retracted to make the rotating member 260 rotatable about the rotation shaft 268. Then, the rotating member 260 is rotated clockwise until the opening 250a of the accommodating-receiving portion 250 is opened, thereby retracting the support piece 262. Thereafter, the screw 269 is advanced so that the tip of the screw 269 abuts against the tip of the restricting piece 267, thereby restricting the counterclockwise rotation of the rotating member 260 and keeping the opening 250a of the accommodating-receiving portion 250 in an open state. Then, the hole 122a of the shaft portion 122 is positioned in the vertical direction, and the positions of the hole 122a and the locking pin 258 are aligned. Then, the shaft portion 122 is inserted into the accommodating-receiving portion 250 from below the accommodating-receiving portion 250.

[0045] Next, as shown in FIG. 5(b), the shaft portion 122 is accommodated in the accommodation receiving portion 250 so that the locking pin 258 is inserted into the hole portion 122a. Because the locking pin 258 is locked in the hole portion 122a, the axial movement of the shaft portion 122 is restricted. After this, when the screw 269 is retracted, the tip of the screw 269 moves away from the tip of the restricting piece 267, and the rotating member 260 becomes rotatable. The rotating member 260 is rotated counterclockwise so that the support piece 262 closes the opening 250a. The rotating member 260 may be rotated by its own weight or may be rotated manually.

[0046] Next, as shown in FIG. 5( c), the rotating member 260 is rotated counterclockwise to a position where the support piece 262 closes the opening 250a of the receiving portion 250. Thus, the support piece 262 supports the shaft portion 122 of the take-up pipe 120. At this time, the forked tip 262a clamps the screw 269. In this state, the rotation of the rotating member 260 is not restricted, but as described above in the first embodiment, the rotating member 260 can be temporarily stopped so that it does not rotate freely. In this state, the nut 270 is tightened to fasten the forked tip 262a between the screw connection portion 256 and the nut 270. Thus, the rotation of the rotating member 260 is restricted. Furthermore, the mounting piece 264 is disposed in contact with and along the upper surface of the receiving portion 250. Thus, the mounting piece 264 is supported by the upper surface of the receiving portion 250.

[0047] 5(d), the screw 269 is tightened and advanced so that the tip of the screw 269 abuts against the bottom surface 267b of the restricting piece 267, restricting the downward rotation of the restricting piece 267. Thus, the rotation of the rotating member 260 is restricted so that the opening 250a is not opened while the shaft portion 122 is supported.

[0048] (Effects of the second embodiment) As described above, according to this embodiment, the nut 270 restricts the downward movement of the support piece 262, thereby restricting the rotation of the rotating member 260, and the weight of the shaft portion 122 applied to the rotating member 260 is distributed by the nut 270, thereby improving the durability of the bearing portion 240.

[0049] (Variation) A modified example of the bearing portion will be described. The rotating member 160 of the first embodiment may be replaced with a sliding member (opening / closing member) that is slidable below the opening 150a of the accommodating-receiving portion 150. The sliding member is provided on the base 130b of the side bracket 130 so as to be slidable in the front-rear direction. The sliding member is a long plate and is disposed below the accommodating-receiving portion 150. By sliding forward, the sliding member moves away from the opening 150a of the accommodating-receiving portion 150, thereby opening the opening 150a. Furthermore, by sliding rearward, the sliding member covers the opening 150a of the accommodating-receiving portion 150, thereby closing the opening 150a. In this way, the sliding member can switch the opening of the accommodating-receiving portion between an open state and a closed state depending on the sliding position. The same applies to the second embodiment.

[0050] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is clear that those skilled in the art can conceive of various modifications and alterations within the scope of the claims, and it is understood that these modifications and alterations also fall within the technical scope of the present invention.

[0051] For example, in the first embodiment, the opening / closing unit that can switch the opening 150a of the receiving portion 150 between an open state and a closed state is configured by the rotating member 160 or the sliding member, but the present invention is not limited to this example. Any design can be used as long as the shaft portion of the take-up pipe can be inserted into the bearing portion of the side bracket from below and can be stably supported.

[0052] Furthermore, in the first embodiment described above, the rotating member 160 is provided with a restricting piece 167 extending in a direction perpendicular to the axial direction of the shaft portion 122, and a screw 169 that can be fixed to the side bracket 130 restricts movement of the restricting piece 167, but the present invention is not limited to this example. Any design can be used as long as it is possible to restrict the rotation of the rotating member. For example, the side bracket may be provided with a structure that locks or fits the restricting piece. The same applies to the second embodiment.

[0053] Furthermore, in the first embodiment, the rotating member 160 is rotatable about the rotating shaft 168 relative to the side bracket 130, the rotating shaft 168 is located above the receiving portion 150, and a mounting piece 164 is provided below the rotating shaft 168 to be placed on the upper surface of the receiving portion 150 in the closed state. However, the present invention is not limited to this example. Any design can be used as long as the durability of the bearing portion can be improved by distributing the weight of the shaft portion on the rotating member to the bearing portion. For example, a structure for placing the mounting piece may be provided on the side bracket. The same applies to the second embodiment.

[0054] Furthermore, in the first embodiment, the locking pin 158, which is perpendicular to the shaft 122, is fixed inside the receiving portion 150, and the locking pin 158 can be inserted into the hole 122a formed in the shaft 122. However, the present invention is not limited to this example. Any design is possible as long as it can restrict the axial movement of the take-up pipe relative to the side bracket. For example, a groove may be formed on the side surface of the shaft 122, and a protrusion may be formed on the receiving portion 150 that fits into the groove to restrict the axial movement of the take-up pipe.

[0055] The contents of the above-described embodiment, modified examples, and application examples can be implemented in appropriate combinations. [Explanation of symbols]

[0056] 100, 200 Roller Blind 110 screens 112 Weight Bar 120 Winding pipe 122 Shaft 122a Hole 124 Motor 130 Side bracket 130a Mounting part 130b base 140, 240 bearing part 150, 250 receiving section 150a, 250a opening 152, 154 Fixed part 156, 256 screw connection 158, 258 Locking pin 160, 260 Rotating member (opening and closing part) 162, 262 Support piece 164, 264 Mounting piece 166, 266 connection piece 167, 267 regulation piece 167a Tapered surface 167b, 267b bottom 168, 268 Rotating shaft 169, 269 Screws (fixing members) 262a Forked tip 270 Nut (regulating member)

Claims

1. A winding pipe that can raise and lower the screen; a pair of side brackets that non-rotatably hold shaft portions protruding from both ends of the winding pipe; Equipped with At least one of the pair of side brackets is provided with a bearing portion that holds the shaft portion, The bearing portion is a receiving portion that has a downward concave opening and is capable of receiving the shaft portion through the opening; an opening / closing unit that can switch the opening between an open state and a closed state; Equipped with The opening and closing section is In the open state, the shaft portion is separated from the opening of the receiving portion, and the shaft portion can be inserted into and removed from the opening. The roller blind is characterized in that, in the closed state, the opening of the receiving portion is covered, and movement of the shaft portion in a direction in which it is removed from the opening is restricted.

2. the opening / closing part is a rotating member that is rotatable around the axis of the winding pipe, The rotating member is formed with a support piece that supports the shaft portion, The roller blind according to claim 1, wherein the rotating member is capable of switching the opening of the receiving portion between the open state and the closed state depending on a rotation position of the rotating member.

3. The roller blind as described in claim 2, characterized in that the rotating member is provided with a regulating piece extending in a direction perpendicular to the axial direction of the shaft portion, and a fixing member that can be fixed to the side bracket regulates the movement of the regulating piece.

4. 4. The roller blind according to claim 3, wherein the fixed member is capable of restricting the rotation of the rotating member in both the open state and the closed state.

5. The roller blind as described in claim 3, characterized in that the rotating member is rotatable around a rotation axis relative to the side bracket, the rotation axis is located above the storage receiving portion, and a mounting piece is provided below the rotation axis to be placed on the upper surface of the storage receiving portion in the closed state.

6. 3. The roller blind according to claim 2, further comprising a regulating member whose position can be adjusted relative to the side bracket, and wherein the regulating member abuts against the lower surface of the support piece, thereby regulating the rotation of the rotating member.

7. the opening / closing portion is a sliding member that is slidable below the opening of the receiving portion, The roller blind according to claim 1, wherein the sliding member is capable of switching the opening of the receiving portion between the open state and the closed state depending on a sliding position.

8. A roller blind as described in any one of claims 1 to 7, characterized in that a locking pin perpendicular to the shaft portion is fixed within the receiving portion, and the locking pin can be inserted into a hole formed in the shaft portion.

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