JP2020029768A - Rolling screen - Google Patents

Abstract

To provide a rolling screen allowing a double screen to be movable relatively in a vertical direction.SOLUTION: A rolling screen 1 according to the invention comprises an operation plate 6 in pendulum operation so that always in operation a gap between a double screen 4 configured to be movable relatively gets apart and always in non-operation it gets closer or it contacts closely than the gap between the double screen which got apart in the operation. Preferably the operation plate 6 is in pendulum operation so that the gap between the double screen 4 in operation gets larger than the gap in resting. More preferably it is in pendulum operation so that the double screen contacts closely by its weight when the operation is stopped and in this double screen 4 a transmission part 4b for transmitting light partially and a block part 4a for blocking light are formed alternately.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a roll screen that allows a double screen to relatively move vertically.

  2. Description of the Related Art Conventionally, there is a roll screen in which a double superimposed screen is relatively moved in a vertical direction so that the amount of light collected into a room can be adjusted.

  The screen in such a roll screen has a transmission part that partially transmits light and a light-shielding part that blocks light are alternately formed in stripes, and the screen is suspended and supported in a state of being overlapped double. I have. Then, by operating the operation means, the front and rear screens are relatively moved in the vertical direction, and the degree of overlap between the transmissive portion and the light shielding portion is adjusted, so that the amount of collected light can be adjusted.

  For example, in order to facilitate the adjustment of the length of the screen, one end is fixed to the winding rod, the screen is hung down, the weight is folded back by the weight member, and the other end is fixed to the fixing member. A configuration for accommodating the length of the screen in an adjustable manner is disclosed (for example, see Patent Document 1). In this configuration, the gap between the double screens is formed, and the screens do not adhere to each other.

  On the other hand, there has been disclosed a configuration in which the screen can be raised and lowered smoothly while maintaining the double screen in a close contact state (for example, see Patent Document 2).

JP 2009-79430 A Patent No. 3311994

  The technique disclosed in Patent Document 1 described above is configured so that a gap between the double screens is generated, and the double screens relatively move without friction during the elevating operation, so that there is no risk of damaging the screens. It is valid. However, this technique has a problem that even when the light-transmitting portion and the light-shielding portion of the screen are made to coincide with each other to be in a light-shielding state, light is leaked from a gap between the screens and light cannot be completely shielded.

  On the other hand, in the technique disclosed in Patent Literature 2, since the double screen is maintained in a close contact state, light leaks from a gap between the screens when the light-transmitting part and the light-shielding part of the screen are aligned with each other to be in the light-shielding state. This is effective in eliminating the risk. However, in this technique, there is a problem that the screen may be damaged because the double screen is closely moved relative to each other during the lifting operation.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a roll screen that relatively moves a relatively movable double screen in the vertical direction in view of the above-described problem.

  The roll screen of the present invention is a roll screen that enables the double screen to be relatively movable in the up and down direction, always at the time of operation, the distance between the double screens configured to be relatively movable is apart, and at the time of non-operation. It is characterized by comprising operating means for always performing a pendulum operation so as to be closer to or close to the distance between the double screens separated during the operation.

  Further, in the roll screen according to the present invention, the operation means performs a pendulum operation such that an interval at the time of operating the double screen is larger than an interval at the time of rest.

  Further, in the roll screen of the present invention, when the operation is stopped, the double screen performs a pendulum operation so that the double screen comes into close contact with its own weight.

  Further, in the roll screen of the present invention, the double screen is characterized in that transmission portions that partially transmit light and light-shielding portions that block light are alternately formed.

  Further, in the roll screen of the present invention, the double screen is formed by folding a single screen, and a winding pipe for attaching and suspending one side of the screen so as to be windable, and A support shaft that attaches and supports the other side of the screen that is suspended from the take-off pipe and folded back via a weight member, wherein the operating means includes the take-up pipe between a stationary state and an operation state. A pendulum operation is performed to change the positional relationship with the support shaft.

  Further, in the roll screen of the present invention, the operation means is engaged with an operation code for operating the opening and closing operation of the double screen, and the operation means is operated by the pulling force of the operation code during operation. It is characterized in that the double screen is configured to have a force point acting so as to rotate in a direction in which the double screen separates with the support shaft.

  Further, in the roll screen of the present invention, the support shaft is provided on an indoor side below the winding pipe.

  Further, in the roll screen of the present invention, the double screen is formed by folding a single screen, and a winding pipe for attaching and suspending one side of the screen so as to be windable, and Fixing means (an attachment frame in an example of an embodiment to be described later) which attaches the other side of the screen which is hung down from the take-up pipe via a weight member, and supports the other side of the screen above the take-up pipe, The operating means is an operating unit that always operates a pendulum when operated by an operation code, and the interval between the double screens is separated according to the pendulum operation, and when not operated, the double screen that is separated during the operation is always operated. Cloth spacing adjusting means (movable fins or fixed bars in an embodiment to be described later) that operates on the other side of the screen so as to be closer or closer than the spacing. Characterized in that it comprises.

  Further, in the roll screen of the present invention, the cloth interval adjusting means includes a movable fin that presses the screen so that the interval between the double screens is separated by a pendulum operation of the operation unit, and the movable fin is a base shaft thereof. It is characterized by being rotatably suspended by the fixing means.

  Further, in the roll screen according to the present invention, the movable fin has a length sufficient to close a gap between the fixing unit and the winding unit.

  Further, in the roll screen of the present invention, the cloth interval adjusting means includes a fixed bar that presses the screen so that the interval between the double screens is separated by the pendulum operation of the operation unit, and the fixed bar is provided for the operation unit. It is characterized in that it is fixed to a part.

  Further, in the roll screen according to the present invention, the operation unit is provided with a rotation restricting unit that restricts a rotation range of the pendulum operation.

  Further, in the roll screen according to the present invention, the operation unit may include a code guide portion that guides the operation code to hang down and supports the operation code so as to perform a pendulum operation.

  Further, in the roll screen of the present invention, the operation means has an operation code of a ball chain connecting a plurality of ball portions, and the code guide portion is configured such that at least two of the ball portions continuous at a predetermined pitch are always in contact with each other. It is configured to be guided in contact.

  Further, in the roll screen of the present invention, the fixing means may include a cloth presser that winds an end portion of the screen to adjust the length, and a fixing unit that detachably locks the cloth presser. Features.

  ADVANTAGE OF THE INVENTION According to this invention, since a double screen does not friction at the time of a raising / lowering operation, or it moves partly during raising / lowering even if friction, or it moves relatively with reduced frictional force, there is no danger of damaging the screen. . In addition, when the screen is stationary, the distance between the double screens can be close to or close to each other. Particularly, in a screen having a transmission part and a light shielding part, the light shielding when the transmission part and the light shielding part are matched to be in the light shielding state Performance can be improved.

It is a front view showing the schematic structure of the roll screen of a 1st embodiment by the present invention. It is a side view showing the schematic structure of the roll screen of a 1st embodiment by the present invention. FIG. 2 is an exploded perspective view illustrating a schematic configuration around an operation plate in the roll screen according to the first embodiment of the present invention. (A), (b), (c) is operation | movement explanatory drawing of the operation plate in the roll screen of 1st Embodiment by this invention. It is a front view showing the schematic structure of the roll screen of a 2nd embodiment by the present invention. It is an exploded perspective view showing a schematic structure around an operation plate in a roll screen of a second embodiment according to the present invention. (A), (b), (c) is operation | movement explanatory drawing of the operation plate in the roll screen of 2nd Embodiment by this invention. It is a front view showing the schematic structure of the roll screen of a 3rd embodiment by the present invention. It is an exploded perspective view showing a schematic structure around an operation plate in a roll screen of a third embodiment according to the present invention. (A), (b), (c) is an explanatory view of the operation when the operation plate in the roll screen of the third embodiment of the present invention is stationary. (A), (b) is operation | movement explanatory drawing at the time of operation of the operation plate in the roll screen of 3rd Embodiment by this invention. (A), (b) is explanatory drawing accompanying the comparative example of the operation plate in the roll screen of 3rd Embodiment by this invention. It is an exploded perspective view showing a schematic structure around an operation plate in a roll screen of a fourth embodiment according to the present invention. (A), (b), (c) is operation | movement explanatory drawing at the time of the stationary of the operation plate in the roll screen of 4th Embodiment by this invention. It is a front view showing the schematic structure of the roll screen of a 5th embodiment by the present invention. It is a side view showing the schematic structure of the roll screen of a 5th embodiment by the present invention. It is an exploded perspective view showing a schematic structure around an operation unit in a roll screen of a fifth embodiment according to the present invention. (A), (b), (c) is operation | movement explanatory drawing of the operation unit in the roll screen of 5th Embodiment by this invention. (A), (b), (c) is operation | movement explanatory drawing of the operation unit of the modification with respect to the roll screen of 5th Embodiment by this invention. It is a front view showing the schematic structure of the roll screen of a 6th embodiment by the present invention. It is an exploded perspective view showing a schematic structure around an operation unit in a roll screen of a sixth embodiment according to the present invention. It is a front view showing the schematic structure of the roll screen of a 7th embodiment by the present invention. It is an exploded perspective view showing a schematic structure around an operation unit in a roll screen of a seventh embodiment according to the present invention. (A), (b), (c) is operation | movement explanatory drawing of the operation unit in the roll screen of 7th Embodiment by this invention.

  Hereinafter, the roll screen 1 of each embodiment according to the present invention will be described with reference to the drawings. In the specification of the present application, with respect to the front view of the roll screen 1 shown in FIG. 1 and the like, the upper side and the lower side in the drawing are respectively upward (or upward) and downward (or downward) according to the direction in which the screen 4 is suspended. The left side of the roll screen 1 is defined as the left side in the figure, and the right side of the roll screen 1 is defined as the right direction in the figure. Further, in the example described below, with respect to the front view of the roll screen 1 shown in FIG. 1, the visible side is the front side (or the indoor side), and the opposite side is the rear side (or the outdoor side). The direction perpendicular to the illustrated plane in the front view of FIG.

[First Embodiment]
First, the configuration of the roll screen 1 according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view illustrating a schematic configuration of a roll screen 1 according to a first embodiment of the present invention, and FIG. 2 is a side view illustrating a schematic configuration of the roll screen 1 according to the first embodiment of the present invention. FIG. 3 is an exploded perspective view showing a schematic configuration around the operation plate 6 in the roll screen 1 according to the first embodiment of the present invention. FIGS. 4A, 4B, and 4C are explanatory views of the operation of the operation plate 6 in the roll screen 1 according to the first embodiment of the present invention.

  In the roll screen 1 shown in FIGS. 1 and 2, support members 2 a and 2 b are fixed to both ends of a mounting frame 2, and a cylindrical shaft is provided between the support members 2 a and 2 b by a fixed shaft 11 extending from the support members 2 a and 2 b. The winding pipe 9 is rotatably supported.

  An operation pulley 10 is provided at a right end portion of the winding pipe 9, and an endless operation cord 3 wound around the operation pulley 10 hangs down. The operation pipe 3 is configured to be rotatable by the operation of the operation cord 3, and the surface of the operation pulley 10 around which the operation cord 3 is wound has a high friction surface shape. The operation cord 3 may be formed of a ball chain, and the surface of the operation pulley 10 around which the ball chain is wound may be configured to have irregularities of a shape adapted to the ball portion of the ball chain.

  An operation plate 6 is provided between the support member 2 a and the operation pulley 10 so as to be relatively rotatable with respect to the winding pipe 9. Below the operation plate 6, one end of a cylindrical support shaft 7 extending between the support members 2a and 2b is attached. The specific configuration and operation of the operation plate 6 will be described later in detail.

  A support plate 8 is provided between the support member 2b and the left end of the take-up pipe 9 so as to be relatively rotatable with respect to the take-up pipe 9; The ends are attached. The shape of the support plate 8 of the present embodiment is substantially the same as the shape of the operation plate 6 except that code guide portions 12 and 13 described later are not provided. However, the outer shape of the support plate 8 may be different from the outer shape of the operation plate 6 as long as the outer shape of the support plate 8 is rotatable relative to the winding pipe 9 and the other end of the support shaft 7 is attached. Good.

  The take-up pipe 9 is attached to one side of the screen 4 so as to be suspended and supported so that the screen 4 can be taken up. The screen 4 hangs down from the take-up pipe 9 and is folded back via the bottom rail 5 functioning as a weight member. The other side is attached to the support shaft 7. A roller 15 rotatably supported by both ends of the bottom rail 5 is inserted through a lower end of the screen 4 that is hung between the winding pipe 9 and the support shaft 7. Therefore, the screen 4 is stretched based on the weight of the bottom rail 5.

  When the operation pipe 3 is operated to rotate the winding pipe 9 in the screen winding direction, the bottom rail 5 is raised, and when the winding pipe 9 is rotated in the screen rewinding direction, the bottom rail 5 is lowered.

  In the winding pipe 9, a spring motor for reducing the operation force at the time of winding the screen 4 is accommodated on the left end side, and a stopper device for preventing the weight of the screen 4 from falling is accommodated on the right end side ( Not shown).

  The screen 4 is formed such that transmissive portions 4b that partially transmit light and light-shielding portions 4a that block light are alternately formed in stripes, and the screen 4 is suspended and supported in a state where the screen 4 is overlapped doubly. By operating the operation code 3, the front and rear screens 4 are relatively moved in the vertical direction to adjust the degree of overlap between the transmission part 4b and the light-shielding part 4a, so that the amount of light can be adjusted.

  Next, a specific configuration of the operation plate 6 and its periphery will be described with reference to FIGS. The operation pulley 10 is provided with a through-hole for using a fixed shaft 11 extending from the support member 2a as a rotation axis. The winding shaft 9 is rotatably supported by the fixed shaft 11 as the operation pulley 10 rotates. . For this reason, a fitting portion 25 is provided on the left end side of the operation pulley 10 to be fitted on the inner peripheral surface of the right end of the winding pipe 9. Further, the left end of the operation pulley 10 meshes with a gear mechanism connected to a stopper device housed in the winding pipe 9 (not shown). This gear mechanism may be omitted if it is not necessary to increase or decrease the speed, and a structure in which the winding pipe 9 and the operation pulley 10 are simply connected directly may be used.

  At the right end of the operation pulley 10, a substantially columnar rotation support part 24 is provided, and a round hole-shaped rotation reception part 23 having a diameter slightly larger than the rotation support part 24 is provided on the operation plate 6. Have been. Therefore, the operation plate 6 is supported to be relatively rotatable with respect to the operation pulley 10 and the winding pipe 9.

  A hole 22 capable of supporting the support shaft 7 is provided below the operation plate 6. One end of the support shaft 7 can be attached to the support shaft 7 by a holding member 21 such as a rivet, and is held so as to extend between the support members 2a and 2b. The support shaft 7 may be rotatably attached to the operation plate 6 or may be non-rotatably attached to the operation plate 6. If a ratchet mechanism or the like that is rotatable and can be held at the rotating position is provided, the height of the bottom rail 5 in the lowermost state of the screen 4 can be finely adjusted.

  In FIG. 2, the clockwise rotation of the operation plate 6 may be configured to prevent the relative rotation of a certain angle or more.

  Further, the cord cover 20 is attached to a fixed member (not shown) fixed to the fixed shaft 11 (or the support member 2a) so that the operation cord 3 hung on the operation pulley 10 does not come off from the operation pulley 10 and does not slip. Is provided.

  On the left end surface of the operation plate 6, two cord guide portions 12, 13 extending in a columnar shape in the example shown are provided. The code guide section 12 guides one (front side) of the endless operation cord 3 hanging down from the operation pulley 10 so as to hang down from above the code guide section 12, and the code guide section 13 hangs down from the operation pulley 10. The other (rear side) of the endless operation cord 3 to be guided is guided so as to hang down from above the code guide 13 and below the code guide 12 (see FIG. 2).

  The operation plate 6 configured as described above is configured to perform a pendulum operation such that when the operation code 3 is operated, the distance between the relatively movable double screens 4 is increased. In particular, the operation plate 6 performs a pendulum operation such that the positional relationship between the take-up pipe 9 and the support shaft 7 changes between at rest and during operation. The interval at the time of operation of the double screen 4 is configured to be larger than the interval at the time of rest.

  More specifically, the operation of the operation plate 6 will be described with reference to FIG. First, referring to FIG. 4A, the operation plate 6 is supported so as to be relatively rotatable with respect to the operation pulley 10 and the winding pipe 9, and each of a lower limit position, an intermediate position, and an upper limit position of the bottom rail 5. In the stationary state, the operation plate 6 is attached to the front and rear screens 4 by its own weight (the weight of the screen 4, the bottom rail 5, the operation plate 6, the support plate 8, and the support shaft 7), that is, in the front side (FIG. 4). (Clockwise with the torque). The operation code 3 is hung on the basis of the code guides 12 and 13.

  In the stationary state, when the bottom rail 5 is at the lower limit position, or when the screen 4 is wound on the winding pipe 9 with the winding diameter R at the middle position and the upper limit position of the bottom rail 5, The distance between the heavy screens 4 is stabilized at a position where the distance between the screens 4 is close or close (the distance d1 between the double screens 4). Therefore, the transmissive portion 4b and the light-shielding portion 4a of the double screen 4 can be shifted to be in a semi-transmissive state, or the transmissive portion 4b and the light-shielding portion 4a of the screen 4 can be matched to be in a light-shielded state, In particular, it is possible to improve the light-shielding property in the light-shielded state. In the lower limit state, the upper end of the screen 4 is attached to the take-up pipe 9 and the support shaft 7 so that the hanging position of the screen 4 in the take-up pipe 9 and the support shaft 7 overlaps in the front-rear direction. This is suitable for enhancing the light shielding property of the double screen 4.

  Next, referring to FIG. 4B, when the operation cord 3 is operated to raise the bottom rail 5 from a state where the bottom rail 5 is at the lower limit position or the intermediate position, for example, the screen 4 is wound around the winding pipe 9. Taken. At this time, the operation code 3 abuts on the code guide portion 12 on the indoor side, and a clockwise torque is applied to the operation plate 6 so that the operation plate 6 performs a pendulum operation, and the interval d2 at the time of operating the double screen 4 is reduced. , The distance d1 at rest. Therefore, the double screen 4 does not rub during the ascent operation, or it moves partly during ascending or descending even if the friction occurs, or the frictional force is reduced, so that the screen 4 is not likely to be damaged.

  Similarly, referring to FIG. 4C, when the operation code 3 is operated to lower the bottom rail 5 from a state where the bottom rail 5 is at the intermediate position or the upper limit position, for example, the bottom rail 5 is wound around the winding pipe 9. Screen 4 descends. At this time, the operation code 3 abuts on the code guide portion 13 on the indoor side and a clockwise torque is applied to the operation plate 6 so that the operation plate 6 performs a pendulum operation, and the interval d3 at the time of operating the double screen 4 is reduced. , The distance d1 at rest. Therefore, the double screen 4 does not rub during the lowering operation, or it moves partly during ascending or descending even if the friction occurs, or the frictional force is reduced and the relative movement is performed, so that there is no risk of damaging the screen 4. In addition, even if friction occurs in a part near the upper limit where the cloth of the screen 4 is thickened, it acts in a direction in which the frictional force is reduced.

  Therefore, according to the roll screen 1 of the first embodiment, the operation plate 6 is rotated by the pulling force of the operation cord 3 at the time of the elevating operation, and the double screen 4 is separated, and without friction (or even if friction occurs) Is reduced), and the screen 4 is not likely to be damaged (or reduced). Also, when stationary, the operation cord 3 loses tension, and the operation plate 6 rotates in the direction in which the double screen 4 approaches by its own weight, such as the screen 4. Thus, the light-shielding property can be improved when the light-transmitting portion 4b and the light-shielding portion 4a of the screen 4 are made to coincide with each other to be in a light-shielding state.

[Second embodiment]
Next, a configuration of the roll screen 1 according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a front view showing a schematic configuration of the roll screen 1 according to the second embodiment of the present invention, and FIG. 6 shows a schematic configuration around the operation plate 6 of the roll screen 1 according to the second embodiment of the present invention. It is an exploded perspective view. FIGS. 7A, 7B, and 7C are explanatory views of the operation of the operation plate 6 in the roll screen 1 according to the second embodiment of the present invention. Note that components that function similarly to the first embodiment are given the same reference numerals.

  The roll screen 1 of the second embodiment shown in FIG. 5 has substantially the same configuration as that of the first embodiment except that the forms of the support member 2a (and the support member 2b) and the operation plate 6 (and the support plate 8) are different. It has become. Therefore, in the following description, the support member 2a and the operation plate 6 of the second embodiment will be mainly described.

  With reference to FIG. 6, a specific configuration of the operation plate 6 of the second embodiment and its surroundings will be described. At the right end of the take-up pipe 9, the take-up pipe 9 is rotatably supported by a fixed shaft 11 extending from the support member 2a, as in the first embodiment. The operation pulley 10 is provided with a through hole for use as a rotation shaft with respect to the fixed shaft 11. The winding pipe 9 can be rotated with the rotation of the operation pulley 10.

  At the right end of the operation pulley 10, a substantially columnar rotation support portion 24 is provided as in the first embodiment. However, the operation plate 6 of the second embodiment is provided with a long-hole-shaped rotation receiving portion 23 having a diameter larger than that of the rotation support portion 24. The long hole-shaped rotation receiving portion 23 is formed so as to be relatively rotatable with respect to a support shaft 16 to be described later across the fixed shaft 11 and to restrict the relative rotation beyond a certain angle. Have been. The shape of the support plate 8 of the present embodiment is substantially the same as the shape of the operation plate 6 of the present embodiment. Z) is provided.

  In addition, the operation plate 6 of the second embodiment has a pivot shaft inserted through the support shaft 16 to the upper outside of the room so as to perform a pendulum operation of the operation plate 6 with the support shaft 16 extending from the support member 2a as a rotation axis. A hole 27 is provided. Similarly, the support plate 8 is also provided with a pivot shaft hole 27 (through the support shaft 16) through which the support shaft 16 is inserted so as to perform a pendulum operation of the support plate 8 using the support shaft 16 extending from the support member 2 b as a rotation axis. (Not shown). The operation shaft 6 and the support plate 8 may be provided with the support shaft 16, respectively, and the support members 2a and 2b may be provided with the rotation shaft hole 27, respectively.

  Therefore, the operation plate 6 and the support plate 8 of the second embodiment are configured such that the operation pulley 10 and the winding It is rotatable relative to the taking pipe 9.

  Above the operation plate 6, another component (not shown) including the code cover 20 is provided on the fixed shaft 11 similarly to the first embodiment. Note that the cord cover 20 may be attached to the support member 2a. A hole 22 capable of supporting the support shaft 7 is provided below the operation plate 6. One end of the support shaft 7 can be attached to the support shaft 7 by a holding member 21 such as a rivet, and is held so as to extend between the support members 2a and 2b. The support shaft 7 may be rotatably attached to the operation plate 6 or may be non-rotatably attached to the operation plate 6. If a ratchet mechanism or the like that is rotatable and can be held at the rotating position is provided, the height of the bottom rail 5 in the lowermost state of the screen 4 can be finely adjusted.

  However, the operation plate 6 according to the second embodiment is not provided with the two cord guide portions 12 and 13 as in the first embodiment. Instead, the support shaft 7 is arranged on the front side of the screen 4, and the operation cord 3 passes through the back side of the support shaft 7. Therefore, in the present embodiment, the support shaft 7 is configured to have a function corresponding to the code guides 12 and 13 of the first embodiment. Further, a code guide portion 14 is provided at a lower end portion of the support member 2a, so that the hanging position of the operation code 3 is on the near side. That is, the code guide portion 14 guides the endless operation cord 3 hanging from the operation pulley 10 to be hung from the upper side of the code guide portion 14 after being wound around the outside of the support shaft 7 (FIG. 5). The shape of the support member 2b is substantially the same as the shape of the support member 2a except that the cord guide portion 14 is not provided.

  Therefore, also in the operation plate 6 of the second embodiment, when the operation code 3 is operated, the pendulum operation is performed so that the distance between the relatively movable double screens 4 is increased. In particular, the operation plate 6 performs a pendulum operation such that the positional relationship between the take-up pipe 9 and the support shaft 7 changes between at rest and during operation. The interval at the time of operation of the double screen 4 is configured to be larger than the interval at the time of rest. Note that the code guiding unit 14 is not essential for the pendulum operation. Further, two cord guides 12 and 13 as in the first embodiment are provided on the front side of the screen 4 below the winding shaft, and the operation code 3 is inserted through the back sides of the code guides 12 and 13 respectively. You may. The portion of the support shaft 7 with which the operation cord 3 contacts may be configured as a rotatable separate component to reduce the resistance.

  More specifically, the operation of the operation plate 6 according to the second embodiment will be described with reference to FIG. First, referring to FIG. 7A, the operation plate 6 is supported so as to be rotatable relative to the operation pulley 10 and the winding pipe 9 around the support shaft 16 as a rotation axis. When the position, the intermediate position, and the upper limit position are at rest, the front and rear screens 4 adhere to the operation plate 6 by its own weight (the weight of the screen 4, the bottom rail 5, the operation plate 6, the support plate 8, and the support shaft 7). The torque acts in the direction, that is, on the near side (clockwise in FIG. 7). Then, the operation cord 3 is hung on the basis of the code guide portion 14 provided on the support member 2a.

  In the stationary state, when the bottom rail 5 is at the lower limit position, or when the screen 4 is wound on the winding pipe 9 with the winding diameter R at the middle position and the upper limit position of the bottom rail 5, The distance between the heavy screens 4 is stabilized at a position where the distance between the screens 4 is close or close (the distance d1 between the double screens 4). Therefore, the transmissive portion 4b and the light-shielding portion 4a of the double screen 4 can be shifted to be in a semi-transmissive state, or the transmissive portion 4b and the light-shielding portion 4a of the screen 4 can be matched to be in a light-shielded state, In particular, it is possible to improve the light-shielding property in the light-shielded state. In the lower limit state, the upper end of the screen 4 is attached to the take-up pipe 9 and the support shaft 7 so that the hanging position of the screen 4 in the take-up pipe 9 and the support shaft 7 overlaps in the front-rear direction. This is suitable for enhancing the light shielding property of the double screen 4.

  Next, referring to FIG. 7B, when the operation cord 3 is operated to raise the bottom rail 5 from a state where the bottom rail 5 is at the lower limit position or the intermediate position, the screen 4 is wound around the winding pipe 9. Taken. At this time, the operation plate 6 operates as a pendulum by applying torque to the support shaft 7 with the code guide portion 14 as a support shaft by the operation code 3, and the interval d2 when the double screen 4 is operated becomes the interval d2 when the screen is stationary. It is configured to be larger than d1. Therefore, the double screen 4 does not rub during the ascent operation, or it moves partly during ascending or descending even if the friction occurs, or the frictional force is reduced, so that the screen 4 is not likely to be damaged.

  Similarly, referring to FIG. 7C, when the operation code 3 is operated to lower the bottom rail 5 from a state where the bottom rail 5 is at the intermediate position or the upper limit position, for example, the bottom pipe 5 is wound around the winding pipe 9. Screen 4 descends. At this time, the operation plate 6 is pendulum-operated by applying a torque to the support shaft 7 with the code guide portion 14 as a support shaft by the operation code 3, and the interval d3 at the time of operating the double screen 4 becomes the interval at the time of standstill. It is configured to be larger than d1. Therefore, the double screen 4 does not rub during the lowering operation, or it moves partly during ascending or descending even if the friction occurs, or the frictional force is reduced and the relative movement is performed, so that there is no risk of damaging the screen 4.

  Therefore, according to the roll screen 1 of the second embodiment, the operation plate 6 is rotated by the pulling force of the operation cord 3 at the time of the elevating operation, and the double screen 4 separates without friction (or even if friction occurs). Is reduced) and the screen 4 is not likely to be damaged. Also, when stationary, the operation cord 3 loses tension, and the operation plate 6 rotates in the direction in which the double screen 4 approaches by its own weight, such as the screen 4. Thus, the light-shielding property can be improved when the light-transmitting portion 4b and the light-shielding portion 4a of the screen 4 are made to coincide with each other to be in a light-shielding state.

  In particular, according to the roll screen 1 of the second embodiment, the installation space in the front-rear width of the roll screen 1 determined in consideration of the pendulum operation of the operation plate 6 can be smaller than that of the first embodiment. Further, the provision of the code guide portion 14 allows the operation plate 6 and the support plate 8 to be rotated in the separating direction by pulling the operation code 3 downward.

[Third embodiment]
Next, a configuration of the roll screen 1 according to the third embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a front view showing a schematic configuration of the roll screen 1 of the third embodiment according to the present invention, and FIG. 9 shows a schematic configuration around the operation plate 6 in the roll screen 1 of the third embodiment according to the present invention. It is an exploded perspective view. FIGS. 10A, 10B, and 10C are explanatory diagrams of the operation of the operation plate 6 in the roll screen 1 according to the third embodiment of the present invention. FIGS. 11A and 11B are explanatory views of the operation of the operation plate 6 in the roll screen 1 according to the third embodiment of the present invention when the operation plate 6 is operated. FIGS. 12A and 12B are explanatory views of a roll screen 1 according to a third embodiment of the present invention with a comparative example of the operation plate 6. Note that components that function similarly to the first embodiment are denoted by the same reference numerals.

  The roll screen 1 of the third embodiment shown in FIG. 8 differs from the first embodiment in that the forms of the operation pulley 10, the support member 2a (and the support member 2b), and the operation plate 6 (and the support plate 8) are different. It has almost the same configuration. Therefore, in the following description, the support member 2a and the operation plate 6 of the third embodiment will be mainly described.

  With reference to FIG. 9, a specific configuration of the operation plate 6 of the third embodiment and its surroundings will be described. At the right end of the take-up pipe 9, the take-up pipe 9 is rotatably supported by a fixed shaft 11 extending from the support member 2a, as in the first embodiment. The operation pulley 10 is provided with a through hole for use as a rotation shaft with respect to the fixed shaft 11. The winding pipe 9 can be rotated with the rotation of the operation pulley 10.

  The operation plate 6 according to the third embodiment has an elongated shape, is disposed between the operation pulley 10 and the support member 2a on the outdoor side so as to avoid the fixed shaft 11, and a support extending from the support member 2a. A rotation shaft hole 27 through which the support shaft 16 is inserted is provided so that the operation plate 6 performs a pendulum operation using the shaft 16 as a rotation axis. A hole 22 for attaching one end of the support shaft 7 extending between the support members 2a and 2b by a holding member 21 such as a rivet is provided below the operation plate 6 as in the first embodiment. .

  The support plate 8 of the present embodiment has substantially the same shape as the operation plate 6 of the present embodiment. The support shaft 7 may be rotatably attached to the operation plate 6 and the support plate 8 or may be non-rotatably attached. Alternatively, the support shaft 16 may be provided on the operation plate 6 and the support plate 8, and the rotation shaft hole 27 may be provided on each of the support members 2a and 2b.

  The operation plate 6 and the support plate 8 of the third embodiment are rotatable relative to the operation pulley 10 and the winding pipe 9 around the support shaft 16 as a rotation axis. The position of the pendulum operation is determined by the weight of the screen 4 and the like located at the lower end of the screen 4 suspended and supported by the support shaft 7 and the winding pipe 9.

  In the operation plate 6 and the support plate 8 of the third embodiment configured as described above, the operation pulley 10 and the take-up pipe 9 are rotated by the weight of the screen 4 and the like using the support shaft 16 as a rotation axis. It is relatively rotatable.

  A code cover 20 (not shown) is arranged above the support member 2a so that the operation cord 3 hung on the operation pulley 10 does not come off. Note that the code cover 20 may be configured by another component fixed to the fixed shaft 11.

  The operation plate 6 according to the third embodiment is not provided with the two cord guides 12 and 13 as in the first embodiment. Instead, the support shaft 7 is arranged on the front side of the screen 4, and the operation cord 3 passes through the back side of the support shaft 7. Therefore, in the present embodiment, the support shaft 7 is configured to have a function corresponding to the code guides 12 and 13 of the first embodiment. Further, a code guide portion 14 is provided at a lower end portion of the support member 2a, so that the hanging position of the operation code 3 is on the near side. That is, the code guide portion 14 guides the endless operation cord 3 hanging from the operation pulley 10 to be hung from the upper side of the code guide portion 14 after being wound around the outside of the support shaft 7 (FIG. 8). The shape of the support member 2b is substantially the same as the shape of the support member 2a except that the cord guide portion 14 is not provided.

  Therefore, the operation plate 6 of the third embodiment is also configured such that when the operation code 3 is operated, the pendulum operation is performed so that the distance between the relatively movable double screens 4 is increased. In particular, the operation plate 6 performs a pendulum operation such that the positional relationship between the take-up pipe 9 and the support shaft 7 changes between at rest and during operation. The interval at the time of operation of the double screen 4 is configured to be larger than the interval at the time of rest.

  More specifically, the operation of the operation plate 6 according to the third embodiment will be described with reference to FIGS. First, referring to FIG. 10A, the operation plate 6 is supported so as to be relatively rotatable with respect to the operation pulley 10 and the winding pipe 9 around the support shaft 16 as a rotation axis. When the position is stationary, the front and rear screens 4 are brought into close contact with the operation plate 6 by its own weight (the weight of the screen 4, the bottom rail 5, the operation plate 6, the support plate 8, and the support shaft 7), that is, toward the front (see FIG. The torque works clockwise at 11). Then, the operation cord 3 is hung on the basis of the code guide portion 14 provided on the support member 2a.

  When the bottom rail 5 is at rest at the lower limit position, the interval between the double screens 4 is stabilized at a position where the distance between the two screens is close to or close to each other (the distance d1 between the double screens 4). Therefore, the transmissive portion 4b and the light-shielding portion 4a of the double screen 4 can be shifted to be in a semi-transmissive state, or the transmissive portion 4b and the light-shielding portion 4a of the screen 4 can be matched to be in a light-shielded state, In particular, it is possible to improve the light-shielding property in the light-shielded state. In the lower limit state, the upper end of the screen 4 is attached to the take-up pipe 9 and the support shaft 7 so that the hanging position of the screen 4 in the take-up pipe 9 and the support shaft 7 overlaps in the front-rear direction. This is suitable for enhancing the light shielding property of the double screen 4.

  Also, as shown in FIG. 10B, when the bottom rail 5 is at rest when the bottom rail 5 is at the intermediate position, as the bottom rail 5 shifts from the lower limit position to the upper limit position, the bottom rail 5 is wound around the winding pipe 9. The winding diameter R of the screen 4 is increased, and the position of the screen 4 suspended by its own weight such as the screen 4 shifts to the outdoor side. The position is not changed (the distance d1 ′ ≒ d1 between the double screens 4). Therefore, at the position where the screen 4 is lowered below the intermediate position, the transmissive portion 4b and the light shielding portion 4a of the double screen 4 are shifted to be in a semi-transmissive state, or the transmission portion 4b and the light shielding portion 4a of the screen 4 are Can be made to be in the light shielding state, and in particular, the light shielding property in the light shielding state can be improved.

  As shown in FIG. 10C, when the bottom rail 5 is at the upper limit position and at rest, the winding diameter R of the screen 4 wound around the winding pipe 9 increases to the maximum. The position of the screen 4, which is suspended by its own weight, such as the screen 4, further shifts to the outdoor side. Even in this state, the distance between the double screens 4 is stabilized. However, in this state, since the screen 4 itself is in the open state, it should be noted that there is no practical problem regarding the closeness of the double screen 4 at rest.

  Next, referring to FIG. 11A, when the operation cord 3 is operated to raise the bottom rail 5 from a state where the bottom rail 5 is at the lower limit position, the screen 4 is wound around the winding pipe 9. At this time, the operation plate 6 operates as a pendulum by applying torque to the support shaft 7 with the code guide portion 14 as a support shaft by the operation code 3, and the interval d2 when the double screen 4 is operated becomes the interval d2 when the screen is stationary. It is configured to be larger than d1. Therefore, there is no danger of damaging the screen 4 because the double screen 4 does not rub during the ascending operation, or is partially moved during ascending or descending even if the friction occurs, or the frictional force is reduced and the relative movement occurs.

  Similarly, referring to FIG. 11B, when the operation code 3 is operated to lower the bottom rail 5 from a state where the bottom rail 5 is at the intermediate position or the upper limit position, for example, the bottom pipe 5 is wound around the winding pipe 9. Screen 4 descends. At this time, the operation plate 6 is pendulum-operated by applying a torque to the support shaft 7 with the code guide portion 14 as a support shaft by the operation code 3, and the interval d3 at the time of operating the double screen 4 becomes the interval at the time of standstill. It is configured to be larger than d1. Therefore, the double screen 4 does not rub during the lowering operation, or it moves partly during ascending or descending even if the friction occurs, or the frictional force is reduced so that the double screen 4 moves relative to each other.

  Here, regarding the pendulum operation of the operation plate 6 according to the third embodiment, points to be noted will be described. Unlike the present embodiment shown in FIG. 12A, the position of the support shaft 16 of the operation plate 6 is changed. FIG. 12B shows a comparative example in which the fixed shaft 11 is arranged closer to the fixed shaft 11. In the present embodiment shown in FIG. 12A, the double screen 4 is suspended by the weight of the screen 4 suspended by the support shaft 7 and the winding pipe 9 when the bottom rail 5 is stationary at the lower limit position. Is stabilized at a position where the distance between the two screens is close to or close to each other (the distance d1 between the double screens 4).

  On the other hand, in the comparative example shown in FIG. 12B, since the support shaft 16 is disposed closer to the fixed shaft 11, the distance D (D> d1) between the double screens 4 is not preferable. Therefore, the preferred position of the support shaft 16 depends on the diameter of the support shaft 7 and the winding pipe 9 and the distance between the support shaft 7 and the winding pipe 9, but the distance between the double screens 4 is not limited. It is preferable that the distance is determined based on the stationary state of the lower limit position of the bottom rail 5 so as to be close or close.

  Therefore, according to the roll screen 1 of the third embodiment, the operation plate 6 is rotated by the pulling force of the operation cord 3 during the elevating operation, and the double screen 4 is separated, so that the double screen 4 is not rubbed (or even if rubbed). Is reduced) and the screen 4 is not likely to be damaged. Further, when stationary, the operation cord 3 loses tension, and the operation plate 6 rotates in a direction in which the double screen 4 approaches by its own weight such as the screen 4. Thus, the light-shielding property can be improved when the light-transmitting portion 4b and the light-shielding portion 4a of the screen 4 are made to coincide with each other to be in a light-shielding state.

  In particular, according to the roll screen 1 of the third embodiment, since the support shaft 7 is arranged inside the room and the plate structure swings downward inside the room, the roll screen 1 is determined in consideration of the pendulum operation of the operation plate 6. The installation space of the front-rear width can be made smaller than in the first embodiment.

[Fourth embodiment]
Next, a configuration of a roll screen 1 according to a fourth embodiment of the present invention will be described as a modification of the first embodiment with reference to FIGS. FIG. 13 is an exploded perspective view showing a schematic configuration around the operation plate 6 in the roll screen 1 of the fourth embodiment according to the present invention. FIGS. 14A, 14B, and 14C are explanatory views of the operation of the operation plate 6 in the roll screen 1 according to the first embodiment of the present invention. Note that components that function similarly to the first embodiment are given the same reference numerals.

  The roll screen 1 shown in FIGS. 13 and 14 has the first embodiment except that a winding gear mechanism (a driving gear 31, a transmission gear 32, and a driven gear 33) is provided between the operation plate 6 and the operation pulley 10. It has the same configuration as the form. Accordingly, in the following description, the operation plate 6, the operation pulley 10, and the winding gear mechanism (the driving gear 31, the transmission gear 32, and the driven gear 33) of the third embodiment will be mainly described.

  With reference to FIG. 13, a specific configuration of the operation plate 6 of the fourth embodiment and its surroundings will be described. At the right end of the take-up pipe 9, the take-up pipe 9 is rotatably supported by a fixed shaft 11 extending from the support member 2a, as in the first embodiment. The operation pulley 10 is provided with a through hole for use as a rotation shaft with respect to the fixed shaft 11. The winding pipe 9 can be rotated with the rotation of the operation pulley 10.

  A drive gear 31 that rotates with the rotation of the operation pulley 10 is fixed to the right end of the operation pulley 10, and a substantially columnar rotation support portion 24 is provided at the right end thereof, as in the first embodiment. ing. The operation plate 6 is provided with a round-shaped rotation receiving portion 23 having a diameter slightly larger than the rotation supporting portion 24. Therefore, the operation plate 6 is rotatably supported by the fixed shaft 11, the operation pulley 10, and the winding pipe 9.

  At the right end of the support shaft 7 extending between the support members 2a and 2b, a driven gear 33 for rotating the support shaft 7 is provided, and the driven gear 33 is held by the holding member 21 such as a rivet. The operation plate 6 is provided with a hole 22 for rotatably supporting the operation plate 6.

  A transmission gear 32 for transmitting the rotation of the drive gear 31 to the driven gear 33 is rotatably attached to the operation plate 6. The transmission gear 32 is configured to transmit the rotation of the drive gear 31 to the driven gear 33.

  Accordingly, when the winding pipe 9 is a first winding shaft for the screen 4, the support shaft 7 functions as a second winding shaft for the screen 4. The diameter of the first winding shaft is larger than the diameter of the second winding shaft. The drive gear 31 and the driven gear 33 have the same number of teeth, and the second winding shaft rotates by the same amount as the rotation of the first winding shaft. Accordingly, the winding length of the screen 4 per unit rotation of the first winding shaft is different from the winding length of the screen 4 per unit rotation of the second winding shaft. When the operation cord 3 is pulled and the operation pulley 10 is rotated in the winding direction, the first winding shaft rotates to wind up the screen 4 and the second winding shaft also winds up the screen 4 and the bottom rail 5. Rises. During the ascent, the ascending speed of the screen 4 on the front side wound on the first winding shaft and the rear screen 4 wound on the second winding shaft are different (rotation of the first winding shaft> 2 rotation of the take-up shaft), a state in which the light shielding portion 4a and the light transmitting portion 4b overlap and a state in which the light shielding portion 4a and the light shielding portion 4b overlap alternately appear. The same applies to rewinding. In the lower limit state of the screen 4, the light-shielding portion 4a and the light-transmitting portion 4b are overlapped with each other, so that the light-shielding state is established.

  Also in the operation plate 6 of the fourth embodiment configured as described above, when the operation code 3 is operated, the pendulum operation is performed so that the distance between the relatively movable double screens 4 is increased. In particular, the operation plate 6 performs a pendulum operation such that the positional relationship between the take-up pipe 9 and the support shaft 7 changes between at rest and during operation. The interval at the time of operation of the double screen 4 is configured to be larger than the interval at the time of rest.

  More specifically, the operation of the operation plate 6 will be described with reference to FIG. First, referring to FIG. 14A, the operation plate 6 is supported so as to be relatively rotatable with respect to the operation pulley 10 and the winding pipe 9, and each of the lower limit position, the intermediate position, and the upper limit position of the bottom rail 5. In the stationary state, the operation plate 6 is attached to the front and rear screens 4 by its own weight (the weight of the screen 4, the bottom rail 5, the operation plate 6, the support plate 8, and the support shaft 7). (Clockwise with the torque). The operation code 3 is hung on the basis of the code guides 12 and 13.

  In this example, the screen 4 is set in a state where the bottom rail 5 is at the rest position when it is at the lower limit position, and the screen 4 is not wound around the winding pipe 9 and the support shaft 7. Alternatively, the stabilization is performed at the contact position (the interval d1 between the double screens 4). In the lower limit state, the upper end of the screen 4 is attached to the take-up pipe 9 and the support shaft 7 so that the hanging position of the screen 4 in the take-up pipe 9 and the support shaft 7 overlaps in the front-rear direction. This is suitable for enhancing the light shielding property of the double screen 4.

  When the screen 4 is wound on the winding pipe 9 and the support shaft 7 at the intermediate position and the upper limit position of the bottom rail 5 with the winding diameters R1 and R2, respectively, the interval between the double screens 4 is also possible. Are stabilized at a position where they come close to or close to each other. In the fourth embodiment, since the winding gear mechanism (the driving gear 31, the transmission gear 32, and the driven gear 33) is provided, the screen 4 is wound around the winding pipe 9 and the support shaft 7 with winding diameters R1 and R2, respectively. By being wound, the adhesion of the double screen 4 is increased from the lower limit position to the upper limit position of the bottom rail 5.

  Therefore, the transmissive portion 4b and the light-shielding portion 4a of the double screen 4 can be shifted to be in a semi-transmissive state, or the transmissive portion 4b and the light-shielding portion 4a of the screen 4 can be matched to be in a light-shielded state, In particular, it is possible to improve the light-shielding property in the light-shielded state.

  Next, referring to FIG. 14B, for example, when the operation cord 3 is operated to raise the bottom rail 5 from the state where the bottom rail 5 is at the lower limit position or the intermediate position, the winding pipe 9 and the support shaft 7 The screen 4 is wound up. At this time, when a torque is applied to the code guide portion 12 by the operation code 3, the operation plate 6 performs a pendulum operation, and the interval d2 when the double screen 4 is operated is larger than the interval d1 when the double screen 4 is stationary. I have. Therefore, even if there is a relative movement due to the difference in the ascending speed of the front and rear screens 4, the double screens 4 do not rub during the ascent operation, or are partially or during frictional ascending or descending. And the relative movement is reduced, so that there is no risk of damaging the screen 4.

  Similarly, referring to FIG. 14C, when the operation cord 3 is operated to lower the bottom rail 5 from a state where the bottom rail 5 is at the intermediate position or the upper limit position, for example, the winding pipe 9 and the support shaft 7 are moved. The screen 4 that has been wound down moves down. At this time, the operation plate 6 is configured to perform a pendulum operation by applying a torque to the code guide portion 13 by the operation code 3, and the interval d3 when the double screen 4 is operated is larger than the interval d1 when the double screen 4 is stationary. I have. Therefore, even if there is a relative movement due to a difference in the lowering speed of the front and rear screens 4, the double screens 4 do not rub during the lowering operation, or even if friction occurs, they are partly moving up and down, or frictional force. And the relative movement is reduced, so that there is no risk of damaging the screen 4.

  Therefore, the operation plate 6 is rotated by the pulling force of the operation cord 3 during the elevating operation, and the double screen 4 separates and relatively moves without friction (or friction is reduced even if friction occurs). There is no risk of harm. Also, when stationary, the operation cord 3 loses tension, and the operation plate 6 rotates in the direction in which the double screen 4 approaches by its own weight, such as the screen 4. Thus, the light-shielding property can be improved when the light-transmitting portion 4b and the light-shielding portion 4a of the screen 4 are made to coincide with each other to be in a light-shielding state.

  In particular, according to the roll screen 1 of the fourth embodiment, the winding gear mechanism (the driving gear 31, the transmission gear 32, and the driven gear 33) is provided, so that the winding pipe 9 and the support shaft 7 each have a winding diameter R1. , R2, the adhesion of the double screen 4 is increased from the lower limit position to the upper limit position of the bottom rail 5.

  Also, with only the above-described configuration, it is possible to switch between a state in which the light shielding portions 4a and the transmission portions 4b in the front and rear screens 4 overlap and a state in which the respective light shielding portions 4a (or the transmission portions 4b) in the front and rear screens 4 overlap. However, the amount of vertical movement of the bottom rail 5 during switching can be reduced by adding the following configuration. Regarding the take-up gear mechanism (the driving gear 31, the transmission gear 32, and the driven gear 33), the transmission part 4b and the light shielding part 4a of the screen 4 are changed from the light shielding state to the transmission part 4b and the light shielding part of the double screen 4. An idle rotation device that idles the rotation amount corresponding to the movement distance until the semi-transmissive state is achieved by shifting the driven gear 4a from either the drive gear 31 or the driven gear 33, or both may be further provided. For details of such a spinning device, refer to, for example, JP-A-2012-77501.

  In the above, the present invention has been described with reference to the specific embodiments. However, the present invention is not limited to the above-described embodiments, and can be variously modified without departing from the technical idea thereof.

  For example, as a modified example of the first embodiment, the example in which the winding gear mechanism (the driving gear 31, the transmission gear 32, and the driven gear 33) is provided as the fourth embodiment has been described, but the second embodiment or the third embodiment is described. As a modified example of the embodiment, a technique in which the winding gear mechanism is provided by applying the techniques of the embodiments in combination is also possible.

  Further, as a modification of the second embodiment or the third embodiment, when the winding gear mechanism is provided, the idling device may be provided.

  In each of the above-described embodiments, as a double screen 4 obtained by folding a single screen, transmissive portions 4b that partially transmit light and light-shielding portions 4a that block light are alternately formed in stripes. Although the operation plate 6 according to the present invention has been described, the operation plate 6 may be a double screen even if it is not a single screen or an embodiment in which the transmissive portions 4b and the light shielding portions 4a are alternately formed. If there is, the operation plate 6 is rotated by the pulling force of the operation cord 3 during the elevating operation, and the double screen 4 is separated, so that there is no friction, or even if friction occurs, a part of the operation during ascending or descending or the frictional force is reduced. This is effective in that it can be relatively moved by being reduced.

  Further, various shapes such as the outer shapes of the support members 2a and 2b, the operation plate 6 and the support plate 8, and the shapes of the cord guide portions 12, 13, and 14 can be used as long as the functions and effects of the present invention are produced. .

  Further, in each embodiment, the mode in which the support plate 8 also performs the pendulum operation along with the pendulum operation of the operation plate 6 has been described. It is also possible that the spacing between the double screens that are sometimes close or closely contacted is separated during operation. For example, the first embodiment and the second embodiment (or the fourth embodiment or a modification thereof) are combined, and the support member 2b is provided with the movement guide hole at the end of the support shaft 7 without providing the support plate 8. The movement guide hole preferably guides the end of the support shaft 7 that moves along with the pendulum operation of the operation plate 6 while preferably having a rotation restricting function. In the pendulum operation described above, the distance between the double screens that are close to or close to each other when stationary can be separated during operation.

  Further, a wall (cover) that rises upward from the support shaft 7 may be provided to prevent light leakage between the winding pipe 9 and the mounting frame 2 or the mounting surface on the ceiling side.

[Fifth Embodiment]
Next, a configuration of a roll screen 1 according to a fifth embodiment of the present invention will be described with reference to FIGS. In each of the above-described embodiments, an example has been described in which the other side of the screen 4 having one side attached to the winding pipe 9 is attached to the support shaft 7. The other side of the screen 4 is an example in which the screen 4 is attached to a fixing portion 2c provided on the outdoor end surface of the mounting frame 2. FIG. 15 is a front view showing a schematic configuration of the roll screen 1 of the fifth embodiment according to the present invention, and FIG. 16 is a side view showing a schematic configuration of the roll screen 1 of the fifth embodiment according to the present invention. FIG. 17 is an exploded perspective view showing a schematic configuration around the operation unit 60 in the roll screen 1 of the fifth embodiment according to the present invention. FIGS. 18A, 18B and 18C are explanatory diagrams of the operation of the operation unit 60 in the roll screen 1 according to the fifth embodiment of the present invention. Note that the same components as those of the above-described embodiments are denoted by the same reference numerals.

  In the roll screen 1 shown in FIGS. 15 and 16, support members 2 a and 2 b are fixed to both ends of a mounting frame 2, and a cylindrical shaft is formed between the support members 2 a and 2 b by a fixed shaft 11 extending from the support members 2 a and 2 b. The winding pipe 9 is rotatably supported.

  At the right end of the take-up pipe 9, an operation unit 60 that is rotatable relative to the take-up pipe 9 and the support members 2a and 2b is provided. An operation pulley 10 is accommodated in the operation unit 60, and an endless operation code 3 wound around the operation pulley 10 is hung down. The operation pipe 3 is configured to be rotatable by the operation of the operation cord 3, and the surface of the operation pulley 10 around which the operation cord 3 is wound has a high friction surface shape. The operation cord 3 may be formed of a ball chain, and the surface of the operation pulley 10 around which the ball chain is wound may be configured to have irregularities of a shape adapted to the ball portion of the ball chain. The specific configuration and operation of the operation unit 60 will be described later in detail.

  The take-up pipe 9 is attached to one side of the screen 4 so as to be suspended and supported so that the screen 4 can be taken up. The screen 4 hangs down from the take-up pipe 9 and is folded back via the bottom rail 5 functioning as a weight member. The other side is attached to a fixing portion 2c provided on the outdoor end surface of the mounting frame 2 located above the winding pipe 9. For example, the fixing portion 2c can be configured to detachably lock a cloth holder fixed to an end of the screen 4 by welding or the like. A roller 15 rotatably supported at both ends of the bottom rail 5 is inserted through a lower end of the screen 4 that is hung between the winding pipe 9 and the fixed portion 2c. Thereby, the screen 4 is stretched based on the weight of the bottom rail 5.

  Accordingly, when the operation pipe 3 is operated to rotate the winding pipe 9 in the screen winding direction, the bottom rail 5 is raised, and when the winding pipe 9 is rotated in the screen rewinding direction, the bottom rail 5 is lowered.

  In the winding pipe 9, a spring motor for reducing the operation force at the time of winding the screen 4 is accommodated on the left end side, and a stopper device for preventing the weight of the screen 4 from falling is accommodated on the right end side ( Not shown).

  The screen 4 is formed such that transmissive portions 4b that partially transmit light and light-shielding portions 4a that block light are alternately formed in stripes, and the screen 4 is suspended and supported in a state where the screen 4 is overlapped doubly. By operating the operation code 3, the front and rear screens 4 are relatively moved in the vertical direction to adjust the degree of overlap between the transmission part 4b and the light-shielding part 4a, so that the amount of light can be adjusted.

  Next, a specific configuration of the operation unit 60 and its surroundings will be described with reference to FIG. 17 together with FIGS. 15 and 16. The operation unit 60 is composed of two operation plate members 6a and 6b that sandwich the operation pulley 10 and the cord cover 20 so as to be housed inside and integrate them. The operation plate member 6b is provided with protruding cord guide portions 12 and 13 which stand upright toward the operation plate member 6a. The endless operation cord 3 wrapped around the operation pulley 10 is guided downward by the code guides 12 and 13. The code cover 20 is fixed to the support member 2a. Note that the code cover 20 may be in any form as long as the operation cord 3 that is wound around the operation pulley 10 is provided so as not to come off from the operation pulley 10 and cause slippage. In addition to the form of being housed inside, the form of fixing to the fixed shaft 11 or the support member 2a can be adopted.

  The code guides 12 in this example are provided at two places above the code guides 13, and one (front side) of the endless operation code 3 hanging from the operation pulley 10 is the code guide 12 (front side). One of the endless operation cords 3 guided from the operation pulley 10 (the rear side) is guided so as to hang down through the space between the cord guide section 13 and the code guide section 13. (See FIG. 16).

  The operation pulley 10 is provided with a through-hole for using a fixed shaft 11 extending from the support member 2a as a rotation axis. The winding shaft 9 is rotatably supported by the fixed shaft 11 as the operation pulley 10 rotates. . For this reason, a fitting portion 25 is provided on the left end side of the operation pulley 10 to be fitted on the inner peripheral surface of the right end of the winding pipe 9. Further, the left end of the operation pulley 10 meshes with a gear mechanism connected to a stopper device housed in the winding pipe 9 (not shown). This gear mechanism may be omitted if it is not necessary to increase or decrease the speed, and a structure in which the winding pipe 9 and the operation pulley 10 are simply connected directly may be used.

  The operation plate member 6a is provided with a round hole-shaped rotation receiving portion 23a whose diameter is larger than the outer diameter of the edge frame of the operation pulley 10, and the operation plate member 6b is larger than the outer diameter of the winding pipe 9. A semicircular hole-shaped rotation receiving portion 23b having a diameter is provided. Therefore, the operation unit 60 is supported to be relatively rotatable with respect to the operation pulley 10 and the winding pipe 9. A concave portion 20a is provided above the cord cover 20 fixed to the support member 2a, and a substantially inverted trapezoidal projecting piece 61 is provided above the operation plate member 6a. In a state in which the two operation plate members 6a and 6b are integrated with the operation pulley 10 and the cord cover 20 sandwiched so as to be able to be accommodated inside, the projecting piece 61 is engaged with the concave portion 20a within a predetermined rotation range. Be composed. In addition, a step portion 20b is provided on the inner wall of the upper projecting piece of the cord cover 20 that allows the operation plate member 6b to be accommodated inside, so as to restrict the relative rotation of the operation unit 60 within a certain angle. That is, when the operation unit 60 is relatively rotated, the step portion 20b can be brought into contact with the edges 26 on both sides of the upper end of the code guide portion 12 in the operation plate member 6b. For this reason, the relative rotation of the operation unit 60 is restricted within a certain angle by the contact between the edge portion 26 and the step portion 20b.

  On the other hand, on the mounting frame 2 whose both ends are fixed by the support members 2a and 2b, a substantially iris-shaped movable fin 40 is hung rotatably around its base axis at the outdoor end on the bottom surface. Since the screen 4 is hung down from the fixed portion 2 c provided on the outdoor end surface of the mounting frame 2, the movable fins 40 are turned by the relative rotation of the operation unit 60 so that the projecting pieces 61 of the operation plate member 6 a are rotated. When pressed at the side end, the movable fins 40 rotate, and the screen 4 on the outdoor side moves further to the outdoor side.

  The operation unit 60 configured as described above is configured to perform a pendulum operation so that the distance between the relatively movable double screens 4 is increased when the operation code 3 is operated. The interval at the time of operation of the double screen 4 is configured to be larger than the interval at the time of rest.

  More specifically, the operation of the operation unit 60 will be described with reference to FIG. First, referring to FIG. 18A, the operation unit 60 is supported so as to be relatively rotatable with respect to the operation pulley 10 (and the winding pipe 9), and the lower limit position, the intermediate position, and the upper limit position of the bottom rail 5. In the stationary state, a torque acts on the operation unit 60 by its own weight (the weight of the screen 4 and the bottom rail 5 and the like) in a direction in which the front and rear screens 4 are in close contact with each other. As a result, the operation code 3 is hung on the basis of the code guides 12 and 13.

  In the stationary state, when the bottom rail 5 is at the lower limit position, or when the screen 4 is wound on the winding pipe 9 at a predetermined winding diameter at the middle position and the upper limit position of the bottom rail 5, The distance between the double screens 4 is stabilized at a position where the distance between the two screens is close to or close to each other (the distance d1 between the double screens 4). Therefore, the transmissive portion 4b and the light-shielding portion 4a of the double screen 4 can be shifted to be in a semi-transmissive state, or the transmissive portion 4b and the light-shielding portion 4a of the screen 4 can be matched to be in a light-shielded state, In particular, it is possible to improve the light-shielding property in the light-shielded state.

  Next, referring to FIG. 18B, when the operation cord 3 is operated to raise the bottom rail 5 from a state where the bottom rail 5 is at the lower limit position or the intermediate position, for example, the screen 4 is wound around the winding pipe 9. Taken. At this time, when the operation cord 3 abuts on the code guide portion 12 on the indoor side and a clockwise torque is applied to the operation unit 60, the operation unit 60 performs a pendulum operation, and the side end of the projecting piece 61 of the operation plate member 6a. Rotates the movable fin 40 and presses the screen 4 on the outdoor side. For this reason, the interval d2 during operation of the double screen 4 is configured to be larger than the interval d1 at rest. Therefore, the double screen 4 does not rub during the ascent operation, or it moves partly during ascending or descending even if the friction occurs, or the frictional force is reduced, so that the screen 4 is not likely to be damaged.

  Similarly, referring to FIG. 18C, when the operation code 3 is operated to lower the bottom rail 5 from a state where the bottom rail 5 is at the intermediate position or the upper limit position, for example, the bottom pipe 5 is wound around the winding pipe 9. Screen 4 descends. At this time, the operation cord 3 comes into contact with the code guide portion 13 on the indoor side and a clockwise torque is applied to the operation unit 60, whereby the operation unit 60 performs a pendulum operation, and the side end of the protruding piece 61 of the operation plate member 6a. Rotates the movable fin 40 and presses the screen 4 on the outdoor side. For this reason, the interval d3 during operation of the double screen 4 is configured to be larger than the interval d1 at rest. Therefore, the double screen 4 does not rub during the lowering operation, or it moves partly during ascending or descending even if the friction occurs, or the frictional force is reduced and the relative movement is performed, so that there is no risk of damaging the screen 4. In addition, even if friction occurs in a part near the upper limit where the cloth of the screen 4 is thickened, it acts in a direction in which the frictional force is reduced.

  Therefore, according to the roll screen 1 of the fifth embodiment, the operation unit 60 is rotated by the pulling force of the operation cord 3 at the time of the elevating operation, and the double screen 4 separates without friction (or even if friction occurs). Is reduced), and the screen 4 is not likely to be damaged (or reduced). Also, when stationary, the operation cord 3 loses tension, and the operation unit 60 rotates in the direction in which the double screen 4 approaches by the weight of the screen 4 or the like. Thus, the light-shielding property can be improved when the light-transmitting portion 4b and the light-shielding portion 4a of the screen 4 are made to coincide with each other to be in a light-shielding state.

  Here, the form of the operation plate members 6a and 6b, the code cover 20, and the like constituting the operation unit 60 may be other forms as shown in FIG. FIGS. 19A, 19B, and 19C are explanatory views of the operation of the operation unit 60 of a modified example of the roll screen 1 according to the fifth embodiment of the present invention. In the example shown in FIG. 19, the operation unit 60 is provided with one code guide unit 12, 13. A rotation restricting shaft 63 is provided on the projecting piece 61 of the operation plate member 6a, and the relative rotation of the operation unit 60 is fixed by a rotation restricting groove 62 provided on the projecting piece extending above the code cover 20. It is configured to regulate within an angle. The rotation restricting groove 62 may be provided on the projecting piece 61 of the operation plate member 6a, and the rotation restricting shaft 63 may be provided on the projecting piece extending above the cord cover 20, or the relative rotation of the operation unit 60 may be performed. If there is no need to restrict the angle within a certain angle, there is no need to provide a mechanism for restricting the relative rotation of the operation unit 60.

  The operation of the modification shown in FIG. 19 will be described. First, referring to FIG. 19A, the operation unit 60 is supported so as to be relatively rotatable with respect to the operation pulley 10 (and the winding pipe 9), and the lower limit position, the middle position, and the upper limit position of the bottom rail 5. In the stationary state, a torque acts on the operation unit 60 by its own weight (the weight of the screen 4 and the bottom rail 5 and the like) in a direction in which the front and rear screens 4 are in close contact with each other. As a result, the operation code 3 is hung on the basis of the code guides 12 and 13.

  In the stationary state, when the bottom rail 5 is at the lower limit position, or when the screen 4 is wound on the winding pipe 9 at a predetermined winding diameter at the middle position and the upper limit position of the bottom rail 5, The distance between the double screens 4 is stabilized at a position where the distance between the two screens is close to or close to each other (the distance d1 between the double screens 4).

  Next, referring to FIG. 19B, for example, when the operation cord 3 is operated to raise the bottom rail 5 from a state where the bottom rail 5 is at the lower limit position or the intermediate position, the screen 4 is wound around the winding pipe 9. Taken. At this time, when the operation cord 3 abuts on the code guide portion 12 on the indoor side and a clockwise torque is applied to the operation unit 60, the operation unit 60 performs a pendulum operation, and the side end of the projecting piece 61 of the operation plate member 6a. Rotates the movable fin 40 and presses the screen 4 on the outdoor side. For this reason, the interval d2 at the time of operating the double screen 4 is larger than the interval d1 at the time of rest.

  Similarly, referring to FIG. 18C, when the operation code 3 is operated to lower the bottom rail 5 from a state where the bottom rail 5 is at the intermediate position or the upper limit position, for example, the bottom pipe 5 is wound around the winding pipe 9. Screen 4 descends. At this time, the operation cord 3 comes into contact with the code guide portion 13 on the indoor side and a clockwise torque is applied to the operation unit 60, whereby the operation unit 60 performs a pendulum operation, and the side end of the protruding piece 61 of the operation plate member 6a. Rotates the movable fin 40 and presses the screen 4 on the outdoor side. For this reason, the interval d3 at the time of operating the double screen 4 becomes larger than the interval d1 at the time of rest.

  Therefore, also in the example shown in FIG. 19, the operation unit 60 is rotated by the pulling force of the operation cord 3 at the time of the lifting operation, the double screen 4 is separated, and the friction is reduced without friction (or the friction is reduced even if friction occurs). ) The relative movement eliminates (or reduces) the possibility of damaging the screen 4. Also, when stationary, the operation cord 3 loses tension, and the operation unit 60 rotates in the direction in which the double screen 4 approaches by the weight of the screen 4 or the like. Thus, the light-shielding property can be improved when the light-transmitting portion 4b and the light-shielding portion 4a of the screen 4 are made to coincide with each other to be in a light-shielding state.

[Sixth embodiment]
Next, the configuration of the roll screen 1 according to the sixth embodiment of the present invention will be described with reference to FIGS. In the sixth embodiment, similarly to the fifth embodiment, the other side of the screen 4 having one side attached to the winding pipe 9 is attached to a fixing portion 2c provided on the outdoor end surface of the mounting frame 2. . FIG. 20 is a front view showing a schematic configuration of the roll screen 1 of the sixth embodiment according to the present invention, and FIG. 21 shows a schematic configuration around the operation unit 60 in the roll screen 1 of the sixth embodiment according to the present invention. It is an exploded perspective view. Note that the same components as those of the above-described embodiments are denoted by the same reference numerals.

  The sixth embodiment is different from the fifth embodiment in that a support plate 8 is provided at the left end of the winding pipe 9, the movable fins 60 are not provided on the mounting frame 2, and the solid bar 50 is connected to the operation unit. The difference is that it is fixed between 60 and the support plate 8.

  As shown in FIG. 20, support members 2a and 2b are fixed to both ends of the mounting frame 2, and a cylindrical winding pipe 9 is provided between the support members 2a and 2b by a fixed shaft 11 extending from the support members 2a and 2b. It is rotatably supported.

  At the right end of the take-up pipe 9, an operation unit 60 that can rotate relative to the take-up pipe 9 and the support members 2a, 2b is provided as in the fifth embodiment. An operation pulley 10 is accommodated in the operation unit 60, and an endless operation code 3 wound around the operation pulley 10 is hung down. The operation pipe 3 is configured to be able to rotate the winding pipe 9 by operating the operation code 3.

  The take-up pipe 9 is attached to one side of the screen 4 and suspended and supported so that the screen 4 can be taken up. The screen 4 is hung down from the take-up pipe 9 and folded back via the bottom rail 5 functioning as a weight member. The other side is attached to a fixing portion provided on the outdoor end surface of the mounting frame 2 as in the fifth embodiment. Rollers 15 rotatably supported at both ends of the bottom rail 5 are inserted through the lower end of the screen 4 hanging between the winding pipe 9 and the fixed portion. Thereby, the screen 4 is stretched based on the weight of the bottom rail 5.

  Accordingly, when the operation pipe 3 is operated to rotate the winding pipe 9 in the screen winding direction, the bottom rail 5 is raised, and when the winding pipe 9 is rotated in the screen rewinding direction, the bottom rail 5 is lowered.

  In the winding pipe 9, a spring motor for reducing the operation force at the time of winding the screen 4 is accommodated on the left end side, and a stopper device for preventing the weight of the screen 4 from falling is accommodated on the right end side ( Not shown).

  The screen 4 is formed such that transmissive portions 4b that partially transmit light and light-shielding portions 4a that block light are alternately formed in stripes, and the screen 4 is suspended and supported in a state where the screen 4 is overlapped doubly. By operating the operation code 3, the front and rear screens 4 are relatively moved in the vertical direction to adjust the degree of overlap between the transmission part 4b and the light-shielding part 4a, so that the amount of light can be adjusted.

  Next, a specific configuration of the operation unit 60 and its surroundings will be described with reference to FIG. The operation unit 60 of the sixth embodiment is the same as that of the fifth embodiment except for the shape of the protruding piece 61 of the operation plate member 6a.

  The protruding piece 61 of the operation plate member 6a is formed in a shape extending outward in a substantially U-shape, and one end of the solid bar 50 is attached to a tip end thereof. The support plate 8 provided between the winding pipe 9 and the support member 2b is configured to have a projecting piece having substantially the same shape as the operation plate member 6a. The ends are attached (see FIG. 20).

  Since the screen 4 is hung down from the fixed portion provided on the outdoor end surface of the mounting frame 2, the winding pipe is positioned rearward from the projecting piece 61 of the operation plate member 6 a by the relative rotation of the operation unit 60. The solid bar 50 extending substantially parallel to 9 is displaced, and the solid bar 50 presses the screen 4 on the outdoor side to move further to the outdoor side.

  Therefore, also in the sixth embodiment, the same operation and effect as those of the fifth embodiment can be produced. When the operation unit 60 operates the operation code 3, the distance between the relatively movable double screens 4 is increased. It is configured to perform a pendulum operation to move away. The interval at the time of operation of the double screen 4 is configured to be larger than the interval at the time of rest.

  In particular, in the examples of the fifth and sixth embodiments, there is no need to provide the support shaft 7 below the winding pipe 9 as compared with the examples of the first to fourth embodiments. Enlargement of the width in the direction can be avoided. Further, in the examples of the first to fourth embodiments, since the support shaft 7 is provided on the operation plate 6 that performs the pendulum operation and the operation plate 6 is relatively rotated, the rotation angle accompanying the pendulum operation is large. However, in the examples of the fifth and sixth embodiments, the operation unit 60 is pendulum-operated without increasing the rotation angle, and the interval when the double screen 4 is operated becomes the interval when the screen 4 is stationary. It can be configured to be larger.

  More specifically, in the examples of the fifth and sixth embodiments, the movable fins assisting the double screen 4 so that the interval at the time of operation thereof becomes larger than the interval at the time of rest according to the pendulum operation of the operation unit 60. By providing the cloth interval adjusting means such as 40 and the fixed bar 50, the width in the front-rear direction of the roll screen 1 including the operation unit 60 with the pendulum operation can be further reduced.

[Seventh embodiment]
Next, the configuration of the roll screen 1 according to the seventh embodiment of the present invention will be described with reference to FIGS. The roll screen 1 of the seventh embodiment includes substantially the same components as the roll screen 1 of the fifth embodiment, but includes a mounting frame 2, a support member 2a, a code cover 20, a movable fin 40, an operation unit 60, Each shape of the operation cord 3 composed of a ball chain and the operation pulley 10 thereof is different from that of the fifth embodiment.

  FIG. 22 is a front view showing a schematic configuration of the roll screen according to the seventh embodiment of the present invention. FIG. 23 is an exploded perspective view showing a schematic configuration around the operation unit 60 in the roll screen 1 of the seventh embodiment according to the present invention. FIGS. 24 (a), (b) and (c) are explanatory diagrams of the operation of the operation unit 60 in the roll screen 1 of the seventh embodiment according to the present invention. Note that the same components as those in the fifth embodiment are denoted by the same reference numerals.

  As shown in FIG. 22, in the roll screen 1 of the seventh embodiment, similarly to the fifth embodiment, support members 2a and 2b are fixed to both ends of a mounting frame 2, and fixed shafts extending from the support members 2a and 2b. 11, the cylindrical winding pipe 9 is rotatably supported between the support members 2a and 2b.

  At the right end of the take-up pipe 9, an operation unit 60 that is rotatable relative to the take-up pipe 9 and the support members 2a and 2b is provided. An operation pulley 10 is accommodated in the operation unit 60, and an endless operation code 3 wound around the operation pulley 10 is hung down. The operation pipe 3 is configured to be able to rotate the winding pipe 9 by operating the operation code 3. The operation cord 3 is constituted by an endless ball chain composed of a ball portion 3a and a chain portion 3b which are continuous at a predetermined pitch, and the surface of the operation pulley 10 has irregularities of a shape adapted to the ball portion 3a. Be composed.

  The take-up pipe 9 is attached to one side of the screen 4 so as to be suspended and supported so that the screen 4 can be taken up. The screen 4 hangs down from the take-up pipe 9 and is folded back via the bottom rail 5 functioning as a weight member. The other side is attached to a fixing portion 2c provided on the outdoor end surface of the mounting frame 2 located above the winding pipe 9. As shown in FIG. 24, the fixing portion 2c according to the present embodiment is configured to wind the end portion of the screen 4 and detachably lock the cloth holder 80 that can adjust the length thereof. . A roller 15 rotatably supported at both ends of the bottom rail 5 is inserted through a lower end of the screen 4 that is hung between the winding pipe 9 and the fixed portion 2c. Thereby, the screen 4 is stretched based on the weight of the bottom rail 5.

  Accordingly, when the operation pipe 3 is operated to rotate the winding pipe 9 in the screen winding direction, the bottom rail 5 is raised, and when the winding pipe 9 is rotated in the screen rewinding direction, the bottom rail 5 is lowered.

  In the winding pipe 9, a spring motor for reducing the operation force at the time of winding the screen 4 is accommodated on the left end side, and a stopper device for preventing the weight of the screen 4 from falling is accommodated on the right end side ( Not shown).

  The screen 4 is formed such that transmissive portions 4b that partially transmit light and light-shielding portions 4a that block light are alternately formed in stripes, and the screen 4 is suspended and supported in a state where the screen 4 is overlapped doubly. By operating the operation code 3, the front and rear screens 4 are relatively moved in the vertical direction to adjust the degree of overlap between the transmission part 4b and the light-shielding part 4a, so that the amount of light can be adjusted.

  Next, a specific configuration of the operation unit 60 and its surroundings will be described with reference to FIG. 23 together with FIG. The operation unit 60 is composed of two operation plate members 6a and 6b that sandwich the operation pulley 10 and the cord cover 20 so as to be housed inside and integrate them. The operation unit 60 is provided with code guides 12 and 13.

  The code guide portion 12 of the present embodiment will be described in detail. An operation plate member 6b having a substantially V-shaped overall shape includes a fixed shaft 11 opposed to the operation plate member 6a from an end in the front-rear direction. A side piece protruding in the axial direction is formed, and an engagement piece 12a is formed on a part of the side piece. The operation plate member 6a also has side pieces 12c protruding in the axial direction facing the operation plate member 6b from the front-back end thereof, and the side pieces 12c are engaged with the engagement pieces 12a of the operation plate member 6b. And can be engaged. The side piece 12c of the operation plate member 6a is provided with a fitting protrusion 12d, and the engagement piece 12a of the operation plate member 6b is formed with a fitting receiving portion 12b capable of fitting with the fitting protrusion 12d. Have been. Therefore, when the operation plate members 6a and 6b are integrated by sandwiching the operation pulley 10 and the code cover 20 so as to be accommodated inside, the side piece 12c of the operation plate member 6a engages with the engagement piece 12a of the operation plate member 6b. By fitting the fitting projection 12d and the fitting receiving portion 12b, the side piece protruding from the operation plate member 6b and the side piece 12c protruding from the operation plate member 6a are integrated with each other to form the present embodiment. Is configured.

  Further, to describe the code guide portion 13 of the present embodiment in detail, the axis of the fixed shaft 11 facing the operation plate member 6a to form the code guide portion 13 from the lower surface on the center side of the operation plate member 6b. The vertically long protrusion protruding in the direction is formed upright. The surface 13a of the vertically elongated projection (the surface facing the operation plate member 6b) is in contact with and engageable with the engagement groove 13b provided on the lower surface on the center side of the operation plate member 6a. Therefore, when the operation plate members 6a and 6b are integrated by sandwiching the operation pulley 10 and the cord cover 20 so as to be able to be accommodated inside, the surface 13a of the elongated projection portion of the operation plate member 6b is engaged with the engagement groove in the operation plate member 6a. The cord guide 13 of the present embodiment is configured by engaging with the cord guide 13b. Note that a screw hole 13c is formed in the engagement groove 13b of the operation plate member 6a, and a screw hole (not shown) similar to the screw hole 13c is formed on the surface 13a of the vertically long protrusion on the operation plate member 6b. Is provided. Then, the operation unit 60 can be configured by integrating and fixing the operation plate members 6a and 6b through these screw holes by the mounting screws 70. Instead of fixing the lower ends of the operation plate members 6a and 6b with the mounting screws 70, the lower ends of the operation plate members 6a and 6b may be fitted. Alternatively, in order to stabilize the integration of the operation plate members 6a and 6b, the shapes of the fitting protrusions 12d and the fitting receiving portions 12b may be optimized or the number thereof may be increased.

  The endless operation cord 3 wrapped around the operation pulley 10 is guided downward by the code guides 12 and 13. In particular, the code guides 12 in the seventh embodiment are provided at two locations on the front and rear sides of the code guides 13 so as to sandwich the code guides 13 therebetween, and between the code guides 12 and 13 on the front side. Further, a guide path slightly larger than the outer shape of the ball portion 3a of the operation code 3 is formed between the rear code guide portion 12 and the code guide portion 13, and an endless operation code hanging from the operation pulley 10. One (front side) 3 is guided so as to hang down between the code guide portion 12 (front side) and the code guide portion 13, and one (rear side) of the endless operation code 3 hangs down from the operation pulley 10. Is guided so as to hang down between the code guide section 12 (rear side) and the code guide section 13 (see FIG. 24).

  Further, a guide slightly larger than the outer shape of the ball portion 3a of the operation code 3 is provided between the front code guide portion 12 and the code guide portion 13 and between the rear code guide portion 12 and the code guide portion 13. The path is formed such that at least two continuous ball portions 3a at a predetermined pitch always contact one of the cord guide portions 12 and 13. With this configuration, rattling in the operation unit 60 during operation of the operation code 3 is suppressed, and operation noise that may be caused by interference between the ball portion 3a and the code guide portions 12 and 13 is reduced. Can be.

  As shown in FIG. 23, the cord cover 20 mainly includes a flange-shaped main body having a cylindrical portion having an insertion hole 20d as a base axis, and an upper protruding piece protruding from an upper edge of the main body in the axial direction of the fixed shaft 11. The operation cord 3 is prevented from coming off the operation pulley 10 and is fixed to the support member 2a so as not to rotate. In this example, the fixed shaft 11 is formed in the shape of a square bar, and the fixed shaft 11 is inserted into the insertion hole 20d and engaged therewith so that the cord cover 20 can be non-rotatably fixed to the support member 2a. I have. However, the code cover 20 may be in any form as long as the operation code 3 provided on the operation pulley 10 is provided so as not to come off from the operation pulley 10 and not to slip.

  The operation pulley 10 is provided with a through hole for using the fixed shaft 11 extending from the support member 2a as a rotation axis. A cylindrical protrusion (not shown) is formed on the right end side of the operation pulley 10, and the protrusion is formed with an engagement groove 20 c provided around the insertion hole 20 d of the cord cover 20. The engagement allows the cord cover 20 and the support member 2a to be non-rotatably supported. At the left end side of the operation pulley 10, a fitting portion 25 that fits on the inner peripheral surface at the right end of the winding pipe 9 is provided via a flange whose diameter is larger than the outer periphery on which the operation cord 3 is mounted. For this reason, the winding pipe 9 is rotatably supported as the operation pulley 10 rotates. Further, the left end of the operation pulley 10 meshes with a gear mechanism connected to a stopper device housed in the winding pipe 9 (not shown). This gear mechanism may be omitted if it is not necessary to increase or decrease the speed, and a structure in which the winding pipe 9 and the operation pulley 10 are simply connected directly may be used.

  On the other hand, on the right end side of the cord cover 20 is formed a projection projecting in a cylindrical shape (not shown). To engage with this projection, the operation plate member 6a has an outer diameter of the projection. A round hole-shaped rotation receiving portion 23a having a diameter larger than that of the rotation receiving portion 23a is provided. The operation plate member 6b is provided with a semicircular hole-shaped rotation receiving portion 23b whose diameter is larger than the outer diameter of the winding pipe 9. Further, a concave portion 20a is provided on an upper protruding piece on the right end side of the cord cover 20 fixed to the support member 2a, and a substantially inverted trapezoidal protruding piece 61 is provided above the operation plate member 6a. . The protruding piece 61 of the present example has a thickness substantially equal to the width in the left-right direction of the operation unit 60, and the lower surface of the protruding piece 61 is supported along the upper surface of the cord cover 20, whereby the operating pulley 10 and the winding pipe The relative rotation of the operation unit 60 with respect to the control unit 9 is stabilized. Therefore, the operation unit 60 is supported to be relatively rotatable with respect to the operation pulley 10 and the winding pipe 9.

  In a state where the two operation plate members 6a and 6b are integrated by sandwiching the operation pulley 10 and the code cover 20 so as to be able to be accommodated inside, the projecting piece 61 is engaged with the concave portion 20a within a predetermined rotation range. It is configured to Further, a step portion 20b is provided on the inner wall of the upper protruding piece on the left end side of the cord cover 20 that allows the operation plate member 6b to be accommodated inside, so as to restrict the relative rotation of the operation unit 60 within a certain angle. . That is, when the operation unit 60 is relatively rotated, the step portion 20b can be brought into contact with the edges 26 on both sides of the upper end of the code guide portion 12 in the operation plate member 6a. For this reason, the relative rotation of the operation unit 60 is restricted within a certain angle by the contact between the edge portion 26 and the step portion 20b.

  On the other hand, on the mounting frame 2 whose both ends are fixed by the support members 2a and 2b, a substantially iris-shaped movable fin 40 is hung rotatably around its base axis at the outdoor end on the bottom surface. The movable fin 40 of the seventh embodiment is configured to be long so that there is no gap between the mounting frame 2 and the winding pipe 9 as compared with the fifth embodiment, and the inside is lightened to maintain strength. And lighter weight. The movable fin 40 having such a long length can further shield external light that can enter from a gap between the mounting frame 2 and the winding pipe 9, and the movable fin relating to the pendulum operation due to the weight reduction. The load for the displacement of the forty can be reduced. Since the screen 4 is hung down from the fixed portion 2 c provided on the outdoor end surface of the mounting frame 2, the movable fins 40 are turned by the relative rotation of the operation unit 60 so that the projecting pieces 61 of the operation plate member 6 a are rotated. When pressed at the side end, the movable fins 40 rotate, and the screen 4 on the outdoor side moves further to the outdoor side.

  The operation unit 60 configured as described above is configured to perform a pendulum operation so that the distance between the relatively movable double screens 4 is increased when the operation code 3 is operated. The interval at the time of operation of the double screen 4 is configured to be larger than the interval at the time of rest.

  More specifically, the operation of the operation unit 60 will be described with reference to FIG. First, referring to FIG. 24A, the operation unit 60 is supported so as to be relatively rotatable with respect to the operation pulley 10 (and the winding pipe 9), and the lower limit position, the intermediate position, and the upper limit position of the bottom rail 5 are provided. In the stationary state, a torque acts on the operation unit 60 by its own weight (the weight of the screen 4 and the bottom rail 5 and the like) in a direction in which the front and rear screens 4 are in close contact with each other. As a result, the operation code 3 is hung on the basis of the code guides 12 and 13.

  In the stationary state, when the bottom rail 5 is at the lower limit position, or when the screen 4 is wound on the winding pipe 9 at a predetermined winding diameter at the middle position and the upper limit position of the bottom rail 5, The distance between the double screens 4 is stabilized at a position where the distance between the two screens is close to or close to each other (the distance d1 between the double screens 4). Therefore, the transmissive portion 4b and the light-shielding portion 4a of the double screen 4 can be shifted to be in a semi-transmissive state, or the transmissive portion 4b and the light-shielding portion 4a of the screen 4 can be matched to be in a light-shielded state, In particular, it is possible to improve the light-shielding property in the light-shielded state. In particular, since the fixing portion 2c of the mounting frame 2 of the present embodiment is configured to wind around the end of the screen 4 and detachably lock the cloth holder 80 that can adjust the length thereof, for example, The structure is such that it is easy to adjust the length of the screen 4 so that the bottom rail 5 is in the shielding state when it is at the lower limit position. The long movable fins 40 can further shield external light that can enter from a gap between the mounting frame 2 and the winding pipe 9.

  Next, referring to FIG. 24B, when the operation cord 3 is operated to raise the bottom rail 5 from a state where the bottom rail 5 is at the lower limit position or the intermediate position, for example, the screen 4 is wound around the winding pipe 9. Taken. At this time, when the operation cord 3 abuts on the code guide portion 12 on the indoor side and a clockwise torque is applied to the operation unit 60, the operation unit 60 performs a pendulum operation, and the side end of the projecting piece 61 of the operation plate member 6a. Rotates the movable fin 40 and presses the screen 4 on the outdoor side. For this reason, the interval d2 during operation of the double screen 4 is configured to be larger than the interval d1 at rest. Therefore, the double screen 4 does not rub during the ascent operation, or it moves partly during ascending or descending even if the friction occurs, or the frictional force is reduced, so that the screen 4 is not likely to be damaged. Further, a guide slightly larger than the outer shape of the ball portion 3a of the operation code 3 is provided between the front code guide portion 12 and the code guide portion 13 and between the rear code guide portion 12 and the code guide portion 13. The path is formed such that at least two continuous ball portions 3a at a predetermined pitch are always in contact with one of the code guide portions 12 and 13, so that rattling in the operation unit 60 when the operation code 3 is operated is suppressed. At the same time, it is possible to reduce the operation noise that may be caused by the interference between the ball portion 3a and the cord guide portions 12, 13.

  Similarly, referring to FIG. 24C, when the operation cord 3 is operated to lower the bottom rail 5 from a state where the bottom rail 5 is at the intermediate position or the upper limit position, for example, the bottom rail 5 is wound around the winding pipe 9. Screen 4 descends. At this time, the operation cord 3 comes into contact with the code guide portion 13 on the indoor side and a clockwise torque is applied to the operation unit 60, whereby the operation unit 60 performs a pendulum operation, and the side end of the protruding piece 61 of the operation plate member 6a. Rotates the movable fin 40 and presses the screen 4 on the outdoor side. For this reason, the interval d3 during operation of the double screen 4 is configured to be larger than the interval d1 at rest. Therefore, the double screen 4 does not rub during the lowering operation, or it moves partly during ascending or descending even if the friction occurs, or the frictional force is reduced and the relative movement is performed, so that there is no risk of damaging the screen 4. In addition, even if friction occurs in a part near the upper limit where the cloth of the screen 4 is thickened, it acts in a direction in which the frictional force is reduced.

  Therefore, according to the roll screen 1 of the seventh embodiment, the operation unit 60 is rotated by the pulling force of the operation cord 3 at the time of the elevating operation, and the double screen 4 separates without friction (or even if friction occurs, friction occurs). Is reduced), and the screen 4 is not likely to be damaged (or reduced). Also, when stationary, the operation cord 3 loses tension, and the operation unit 60 rotates in the direction in which the double screen 4 approaches by the weight of the screen 4 or the like. Thus, the light-shielding property can be improved when the light-transmitting portion 4b and the light-shielding portion 4a of the screen 4 are made to coincide with each other to be in a light-shielding state.

  In addition, according to the roll screen 1 of the seventh embodiment, the fabric holder 80 that allows the length of the screen 4 to be adjustable by winding is detachably locked by the fixing portion 2c of the mounting frame 2; For example, it is easy to adjust the length of the screen 4 so that the bottom rail 5 is in the shielding state when it is at the lower limit position.

  Further, according to the roll screen 1 of the seventh embodiment, since the movable fins 40 are formed with a length sufficient to close the gap between the mounting frame 2 and the winding pipe 9, the mounting frame 2 and the winding pipe 9 are formed. 9 can be further shielded from external light that can be incident from a gap between the external light source 9.

  Further, according to the roll screen 1 of the seventh embodiment, a predetermined pitch is provided between the front code guide 12 and the code guide 13 and between the rear code guide 12 and the code guide 13. Is configured so that at least two continuous ball portions 3a are always in contact with and guided by one of the code guide portions 12, 13, so that rattling in the operation unit 60 when the operation code 3 is operated is suppressed, and It is possible to reduce an operation sound that may be caused by interference between the section 3a and the code guide sections 12 and 13.

  As described above, the present invention has been described with reference to the example of the specific embodiment. However, the present invention is not limited to the example of the above-described embodiment, and can be variously modified without departing from the technical idea thereof. is there. For example, in each embodiment, the indoor side and the indoor side are specified and described, but the indoor side and the indoor side may be installed in opposite directions.

  Further, in order to surely separate the screen 4 during the operation, an urging means such as a spring for assisting a pendulum operation for moving the screen 4 in a separating direction may be further provided.

  According to the roll screen 1 according to the present invention, the double screen 4 does not rub at the time of the lifting operation, or is partially moved during the lifting even if the friction is performed, or the frictional force is reduced and the relative movement is performed. There is no risk of damaging the screen 4 and the gap between the double screens 4 can be made close to or close to the screen 4 when the screen 4 is stationary. Since the light-shielding property when the light-shielding state is achieved by matching 4a can be improved, it is useful for applications such as blinds using a double screen.

DESCRIPTION OF SYMBOLS 1 Roll screen 2 Mounting frame 2a, 2b Support member 2c Fixing part 3 Operation code 4 Screen 4a Screen light-shielding part 4b Screen transmission part 5 Bottom rail 6 Operation plate 6a, 6b Operation plate member 7 Support shaft 8 Support plate 9 Winding Pipe 10 Operation pulley 11 Fixed shaft 12, 13, 14 Cord guide portion 15 Roller 16 Support shaft 23 Rotation receiving portion 27 Rotation shaft hole 31 Drive gear 32 Transmission gear 33 Driven gear 40 Movable fin 50 Fixed bar 60 Operation unit 61 Protruding piece 80 Fabric holder

Claims (15)

A roll screen that allows the double screen to move relatively in the vertical direction,
The operating means which always penetrates so that the distance between the double screens which are configured to be relatively movable at the time of operation is larger than the distance between the double screens separated at the time of the operation, and which is always closer to the time of non-operation. A roll screen comprising:   2. The roll screen according to claim 1, wherein the operation unit performs a pendulum operation such that an interval during operation of the double screen is larger than an interval during rest.   The roll screen according to claim 1, wherein when the operation is stopped, the double screen performs a pendulum operation such that the double screen comes into close contact with its own weight.   The roll according to any one of claims 1 to 3, wherein the double screen is configured such that transmission portions that partially transmit light and light blocking portions that block light are alternately formed. screen. The double screen is formed by folding one screen,
A take-up pipe that is attached to one side of the screen and hung and supported so that it can be taken up,
A support shaft that attaches and supports the other side of the screen that is suspended from the winding pipe and folded back via a weight member,
The method according to any one of claims 1 to 4, wherein the operation unit performs a pendulum operation to change a positional relationship between the winding pipe and the support shaft between a stationary state and an operation state. Roll screen as described.   The operating means is engaged with an operation cord for operating the opening and closing operation of the double screen, and the operating means causes the double screen to move together with the support shaft by a tensile force of the operation code during operation. The roll screen according to claim 5, wherein the roll screen is configured to have a force point acting to rotate in a direction in which the roll screen moves away from the roll screen.   The roll screen according to claim 5, wherein the support shaft is provided on an indoor side below the winding pipe. The double screen is formed by folding one screen,
A take-up pipe that is attached to one side of the screen and hung and supported so that it can be taken up,
Fixing means for attaching the other side of the screen, which is suspended from the winding pipe via a weight member, and which is supported above the winding pipe,
The operating means is an operating unit that always operates a pendulum when operated by an operation code, and the interval between the double screens is separated according to the pendulum operation, and when not operated, the double screen that is separated during the operation is always operated. The roll screen according to any one of claims 1 to 4, further comprising cloth spacing adjusting means that operates on the other side of the screen so as to be closer or closer than the spacing.   The cloth interval adjusting means includes a movable fin that presses the screen so that the distance between the double screens is separated by a pendulum operation of the operation unit, and the movable fin is rotatably suspended on the fixing means by its base axis. 9. The roll screen according to claim 8, wherein the roll screen is lowered.   The roll screen according to claim 9, wherein the movable fin has a length sufficient to close a gap between the fixing unit and the winding unit.   The cloth interval adjusting means includes a fixed bar that presses the screen so that the interval between the double screens is separated by a pendulum operation of the operation unit, wherein the fixed bar is fixed to a part of the operation unit. A roll screen according to claim 8, characterized in that   The roll screen according to any one of claims 8 to 11, wherein the operation unit is provided with a rotation restricting unit that restricts a rotation range of the pendulum operation.   The roll according to any one of claims 8 to 12, wherein the operation unit has a code guide portion that guides the operation code to hang down and supports the operation code so as to perform a pendulum operation. screen. The operation means has an operation code of a ball chain connecting a plurality of ball portions,
14. The roll screen according to claim 13, wherein the chord guide section is configured such that at least two continuous ball sections at a predetermined pitch are always contacted and guided.   15. The fixing device according to claim 8, wherein the fixing unit includes a cloth holder that winds an end of the screen to adjust the length, and a fixing unit that detachably locks the cloth holder. 16. A roll screen according to any one of the above.