CN106460453B - Rolling screen - Google Patents

Abstract

The rolling curtain provided by the invention can enable the double-layer curtain cloth to relatively move along the vertical direction; the rolling screen (1) of the invention is provided with an operation plate (6), and when in operation, the operation plate (6) performs pendulum motion in a mode of increasing the interval of the double-layer curtain cloth (4) which can move relatively; preferably, the operation plate (6) performs pendulum motion in a manner that the interval of the double-layer curtain cloth (4) during operation is larger than the interval during rest; more preferably, when the operation is stopped, the operation panel (6) performs a pendulum motion by the weight of the double-layer fabric so as to closely adhere the double-layer fabric, and a light transmitting portion (4b) for transmitting a part of the light and a light shielding portion (4a) for shielding the light are alternately formed on the double-layer fabric (4).

Description

roller shutter

technical field

The present invention relates to a roll screen capable of relatively moving a two-layer screen in an up-down direction.

Background technique

In the prior art, there is a roller blind that can relatively move the double-layered curtain fabrics in the up-down direction, thereby adjusting the amount of indoor lighting.

The curtain fabric of the roller blind is alternately formed with a light-transmitting portion that transmits part of the light and a light-shielding portion that shields the light in stripes, and the curtain is hung down in a state of being double-layered. Furthermore, the front and rear curtains can be relatively moved in the up-down direction by the operation of the operating mechanism, so that the overlapping degree of the light-transmitting part and the light-shielding part can be adjusted, thereby adjusting the amount of lighting.

For example, a configuration is disclosed in which, in order to easily adjust the length of the screen, one end of the screen is fixed to a winding rod, and the other end of the screen, which hangs down from the winding rod and is folded back via a weight member, is fixed to When attaching to the fixing member, the other end of the screen cloth is accommodated in the fixing member so that the length of the screen cloth can be adjusted (for example, refer to Patent Document 1). In this configuration, there is a gap between the double cord fabrics, and they are not in close contact with each other.

On the other hand, there is disclosed a configuration capable of smoothly ascending or descending the curtain fabric while maintaining the close contact state of the double curtain fabric (for example, refer to Patent Document 2).

【Existing technical documents】

【Patent Literature】

Patent Document 1: Japanese Patent Laid-Open No. 2009-79430

Patent Document 2: Specification of Japanese Patent and Patent No. 3311994

SUMMARY OF THE INVENTION

In the technique disclosed in the above-mentioned Patent Document 1, since there is a gap between the double cords, the double cords move relative to each other without friction during the lifting operation, and therefore, it is effective in preventing damage to the cords. However, this technique has a problem that even if the light-transmitting portion and the light-shielding portion of the curtain are completely overlapped to form a light-shielding state, light leaks from the gap between the curtains and cannot be completely shielded.

On the other hand, in the technique disclosed in Patent Document 2, since the double-layered curtains are kept in close contact with each other, light leakage from the gaps of the curtains is prevented when the light-transmitting parts and the light-shielding parts of the curtains are completely overlapped to form a light-shielding state. efficient. However, in this technique, there is a problem in that the double-layered curtains move relatively in a close-fitting state during the lifting and lowering operation, so that the curtains may be damaged.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a roller blind that relatively moves a double-layered fabric that can move relatively in the up-down direction.

The roller blind of the present invention is characterized by being capable of relatively moving the double-layered fabrics in the up-down direction, and is characterized by having an operation mechanism that increases the interval between the double-layered fabrics configured to be relatively movable when the operation is performed. way of pendulum movement.

In addition, the roller blind of the present invention is characterized in that the operating mechanism performs pendulum motion so that the interval at the time of operation of the double-layered screen is larger than the interval at the time of rest.

In addition, the roller blind of the present invention is characterized in that, when the operation is stopped, the operating mechanism performs a pendulum motion so as to make the double-layered curtain close to each other under the action of the self-weight of the double-layered curtain.

In addition, the roller blind of the present invention is characterized in that: a light-transmitting part for allowing part of the light to pass through and a light-shielding part for shielding the light are alternately formed on the double-layered curtain fabric.

In addition, the roller blind of the present invention is characterized in that: the double-layered fabric is formed by folding back one fabric; the roller blind is provided with a winding tube and a support shaft, and one side of the fabric is attached to the winding tube, The curtain is suspended and supported on the winding tube in a rollable manner, and the other side of the curtain that hangs down from the winding tube and is folded back via the counterweight member is mounted and supported on the support shaft. on; the operating mechanism performs a pendulum motion in such a manner that the positional relationship between the winding tube and the support shaft changes between the positional relationship at rest and the positional relationship during operation.

In addition, the roller blind of the present invention is characterized in that the operating mechanism is configured to have a force receiving point, and the force receiving point is engaged with an operation cord for operating the opening and closing operation of the double screen, and is configured to pass through any The pulling force of the operating rope exerts a force on the force-receiving point, so that the operating mechanism and the support shaft are rotated together toward the direction of separating the double-layer cord fabrics.

In addition, the roller blind of the present invention is characterized in that the support shaft is provided below the winding pipe and at a position close to the indoor side.

In addition, the roller blind of the present invention is characterized in that: the double-layered fabric is formed by folding back one fabric; the roller blind includes a winding tube and a fixing member (a mounting bracket in an example of an embodiment to be described later), and the roller blind is characterized in that: One side of the cord fabric is mounted on the winding tube, and the cord fabric is suspended and supported on the winding tube in a rollable manner, and the cord fabric hangs down from the winding tube through a counterweight member. The other side that is folded back is attached and supported at a position above the winding tube by the fixing member; the operating mechanism includes an operating unit and a material interval adjusting member (in the example of the embodiment described later, a movable flap or fixed lever), the operation unit performs a pendulum motion when operated by an operation cord, and the fabric interval adjusting member operates so as to increase the interval of the double-layer fabrics in accordance with the pendulum motion of the operation unit .

In addition, the roller blind of the present invention is characterized in that the fabric interval adjusting member includes a movable blade that increases the interval between the double-layered fabrics in accordance with the pendulum movement of the operation unit. The curtain fabric is pressed in a manner, and the base shaft of the movable flap is fixed on the fixing member.

In addition, the roller blind of the present invention is characterized in that the movable vane has a length sufficient to close the gap between the fixed member and the winding tube.

In addition, the roller blind of the present invention is characterized in that the material interval adjusting member includes a fixing lever which is pressed so as to increase the interval between the double-layered fabrics in accordance with the pendulum movement of the operating unit. The curtain, and the fixing rod are fixed on a part of the operation unit.

In addition, the roller blind of the present invention is characterized in that the operation unit is provided with a rotation restricting member that restricts the rotation range of the pendulum movement.

In addition, the roller blind of the present invention is characterized in that the operation unit has a cord guide that guides the hanging down of the operation cord and supports the operation cord so as to cause the operation unit to perform a pendulum motion. .

In addition, the roller blind of the present invention is characterized in that: the operating mechanism has an operating rope composed of a bead chain formed by connecting a plurality of ball parts; The ball portion is always in contact with the rope guide portion and is guided.

In addition, the roller blind of the present invention is characterized in that: the fixing member has a material pressing plate and a fixing portion, the material pressing plate can be wound around the end of the screen cloth to adjust the length of the screen cloth, and the material pressing plate is detachable. It is locked in the fixing part in a way of being installed.

(invention effect)

According to the present invention, during the lifting operation, the double-layer cords move relatively without friction, or only generate friction in part of the lifting process, or the friction force is weakened, so there is no possibility of damaging the cords. In addition, in the static state, the interval between the double curtains can be reduced, or the double curtains can be made close to each other. Especially in the curtains having a light-transmitting part and a light-shielding part, the completeness of the light-transmitting part and the light-shielding part can be improved. Light-shielding properties when stacked to form a light-shielding state.

Description of drawings

FIG. 1 is a front view showing a schematic configuration of a roller blind according to a first embodiment of the present invention.

2 is a side view showing a schematic configuration of the roller blind according to the first embodiment of the present invention.

3 is an exploded perspective view showing a schematic configuration around an operation panel in the roller blind according to the first embodiment of the present invention.

(a), (b), (c) in FIG. 4 is a figure explaining the operation|movement of the operation panel in the roller blind which concerns on 1st Embodiment of this invention.

5 is a front view showing a schematic configuration of a roller blind according to a second embodiment of the present invention.

6 is an exploded perspective view showing a schematic configuration around an operation panel in a roller blind according to a second embodiment of the present invention.

(a), (b), (c) in FIG. 7 is a figure explaining the operation|movement of the operation panel in the roller blind which concerns on 2nd Embodiment of this invention.

8 is a front view showing a schematic configuration of a roller blind according to a third embodiment of the present invention.

9 is an exploded perspective view showing a schematic configuration around an operation panel in a roller blind according to a third embodiment of the present invention.

(a), (b), (c) in FIG. 10 is a figure explaining the operation|movement when the operation panel in the roller blind which concerns on 3rd Embodiment of this invention is stationary.

(a), (b) in FIG. 11 is a figure explaining the operation|movement at the time of operation of the operation panel in the roller blind which concerns on 3rd Embodiment of this invention.

(a), (b) in FIG. 12 is a figure which demonstrates the operation panel in the roller blind which concerns on 3rd Embodiment of this invention in comparison with a comparative example.

13 is an exploded perspective view showing a schematic configuration around an operation panel in a roller blind according to a fourth embodiment of the present invention.

(a), (b), (c) in FIG. 14 is a figure explaining the operation|movement of the operation panel in the roller blind which concerns on 4th Embodiment of this invention.

15 is a front view showing a schematic configuration of a roller blind according to a fifth embodiment of the present invention.

16 is a side view showing a schematic configuration of a roller blind according to a fifth embodiment of the present invention.

17 is an exploded perspective view showing a schematic configuration around an operation unit in a roller blind according to a fifth embodiment of the present invention.

(a), (b), (c) in FIG. 18 is a figure explaining the operation|movement of the operation means in the roller blind which concerns on 5th Embodiment of this invention.

(a), (b), (c) in FIG. 19 is a figure explaining the operation|movement of the operation means of the modification of the roller blind which concerns on 5th Embodiment of this invention.

20 is a front view showing a schematic configuration of a roller blind according to a sixth embodiment of the present invention.

Fig. 21 is an exploded perspective view showing a schematic configuration around an operation unit in a roller blind according to a sixth embodiment of the present invention.

22 is a front view showing a schematic configuration of a roller blind according to a seventh embodiment of the present invention.

23 is an exploded perspective view showing a schematic configuration around an operation unit in a roller blind according to a seventh embodiment of the present invention.

(a), (b), (c) in FIG. 24 is a figure explaining the operation|movement of the operation means in the roller blind which concerns on 7th Embodiment of this invention.

(Symbol Description)

1 roller blind

2 Mounting bracket

2a, 2b Support parts

2c Fixed part

3 operating rope

4 cords

4a Shade of curtain

4b The light-transmitting part of the cord fabric

5 Lower beam

6 Operation panel

6a, 6b Operation panel parts

7 Support shaft

8 Support plate

9 Coiled Tube

10 Operating the pulley

11 Fixed axis

12, 13, 14 Rope guide

15 Rollers

16 Pivot

23 Rotation receiving part

27 Rotating shaft hole

31 Drive gear

32 Transmission gear

33 driven gear

40 Movable Wings

50 Fixed rod

60 Operating unit

61 Protruding pieces

80 Fabric Press

Detailed ways

Hereinafter, a roll screen 1 according to each embodiment of the present invention will be described with reference to the drawings. In addition, in the specification of the present application, the upper side and the lower side of the drawing in the front view of the roller blind 1 shown in FIG. ”) and “below” (or “lower side”), the left side of the drawing is defined as the “left side” of the roller blind 1, and the right side of the drawing is defined as the “right side” of the roller blind 1. In addition, in the example described below, the side which can be observed in the front view of the roller blind 1 shown in FIG. 1 is called "front side" (or "indoor side"), and the opposite side is called "front side". When the "rear side" (or "outdoor side") is called the front-rear direction of the roller blind 1, it means the direction perpendicular|vertical to the illustration surface in the front view of FIG.

[First Embodiment]

First, the configuration of the roller blind 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4 . FIG. 1 is a front view showing the schematic configuration of the roller blind 1 according to the first embodiment of the present invention, and FIG. 2 is a side view showing the schematic configuration of the roller blind 1 according to the first embodiment of the present invention. 3 is an exploded perspective view showing a schematic configuration around the operation panel 6 in the roller blind 1 according to the first embodiment of the present invention. In addition, (a), (b), (c) in FIG. 4 is a figure explaining the operation|movement of the operation panel 6 in the roller blind 1 which concerns on 1st Embodiment of this invention.

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

An operation pulley 10 is provided at the right end of the winding tube 9, and the annular operation rope 3 is hung on the operation pulley 10 and hangs down therefrom. Furthermore, the roller blind 1 is configured so that the winding tube 9 can be rotated by the operation of the operation cord 3, and the surface of the operation pulley 10 on which the operation cord 3 is hung has a high friction surface shape. In addition, this operation rope 3 consists of a ball chain (ball chain), and the surface of the operation pulley 10 which hangs this ball chain may be formed so that it may have unevenness|corrugations which correspond to the ball part of this ball chain.

Between the support member 2 a and the operation pulley 10 , the operation plate 6 is provided so as to be rotatable with respect to the winding pipe 9 . One end of a cylindrical support shaft 7 extending between the support members 2 a and 2 b is attached to the lower portion of the operation panel 6 . Note that the specific configuration and operation of the operation panel 6 will be described in detail later.

Further, a support plate 8 is provided between the support member 2 b and the left end portion of the winding tube 9 so as to be rotatable relative to the winding tube 9 , and the other end of the support shaft 7 is attached to the lower portion of the support plate 8 . . 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 the cord guides 12 and 13 described later are not provided. However, the external shape of the support plate 8 may be different from the external shape of the operation panel 6 as long as it is rotatable relative to the winding tube 9 and the other end of the support shaft 7 can be attached.

One side of the curtain fabric 4 is mounted on the winding tube 9, and the curtain fabric 4 is suspended and supported on the winding tube 9 in a rollable manner. The other side of the bottom rail 5 that is folded back is attached to the support shaft 7 . Further, rollers 15 are inserted through the lower end portions of the screen cloth 4 hanging down from between the winding tube 9 and the support shaft 7 , and the rollers 15 are rotatably supported at both end portions of the lower beam 5 . Therefore, the cord fabric 4 is arranged to be tensioned by the weight of the lower beam 5 .

Then, when the operation cord 3 is operated to rotate the winding tube 9 in the carcass winding direction, the lower beam 5 is raised, and when the winding tube 9 is rotated in the carcass unwinding direction, the lower beam 5 is lowered.

In addition, a spring motor for reducing the operating force when winding up the curtain fabric 4 is accommodated at the left end side of the winding tube 9, and a braking device for preventing the curtain fabric 4 from falling due to its own weight is accommodated at the right end side. etc. (not shown).

The curtain 4 is alternately formed with light-transmitting parts 4b that allow part of the light to pass through and light-shielding parts 4a that block the light in stripes, and the curtain 4 is suspended and supported in a double-layered state. Therefore, by the operation of the operating rope 3 By relatively moving the front and rear curtain fabrics 4 in the up-down direction, the overlapping degree of the light-transmitting portion 4b and the light-shielding portion 4a can be adjusted, so that the amount of lighting can be adjusted.

Next, the specific configuration of the operation panel 6 and its surroundings will be described with reference to FIGS. 1 , 2 and 3 . The operation pulley 10 is provided with a through hole, and a fixed shaft 11 extending from the support member 2 a is used as a rotating shaft, and the winding tube 9 is rotatable along with the rotation of the operation pulley 10 through the fixed shaft 11 . way to support. For this purpose, a fitting portion 25 to which the inner peripheral surface of the right end of the winding tube 9 is fitted is provided on the left end side of the operation pulley 10 . In addition, the left end portion of the operation pulley 10 meshes with a gear mechanism (not shown) connected to the braking device accommodated in the winding tube 9 . When the acceleration or deceleration is not required, the gear mechanism may be omitted, and the winding tube 9 may be directly connected to the operation pulley 10 .

The right end portion of the operation pulley 10 is provided with a substantially cylindrical rotation support portion 24 , and the operation plate 6 is provided with a circular hole-shaped rotation receiving portion 23 with a diameter slightly larger than the rotation support portion 24 . Therefore, the operation plate 6 is supported so as to be rotatable with respect to the operation pulley 10 and the winding pipe 9 .

A hole portion 22 capable of supporting the support shaft 7 is provided in the lower portion of the operation panel 6 . One end of the support shaft 7 can be attached to the operation panel 6 by a holding member 21 such as a rivet, and the support shaft 7 is held so as to extend between the support members 2a and 2b. The support shaft 7 may be attached so as to be rotatable with respect to the operation panel 6 or may be attached so as not to be able to rotate with respect to the operation panel 6 . When a ratchet mechanism or the like that can be rotated and can be held at the rotational position is provided, it is possible to finely adjust the height of the lower beam 5 when the screen cloth 4 is in the lower limit state.

In addition, in FIG. 2, you may comprise so that the angle which can prevent the relative rotation of the operation panel 6 in the clockwise direction exceeds a certain angle.

In addition, on the fixing member (not shown) fixed to the fixed shaft 11 (or the support member 2a), a rope cover 20 is provided to prevent the operation rope 3 hanging around the operation pulley 10 from slipping off the operation pulley 10 .

In the example shown in the figure, two cord guides 12 and 13 extending cylindrically are provided on the left end surface of the operation panel 6 . The rope guide 12 guides one side (front side) of the looped operation rope 3 hanging down from the operation pulley 10 to hang down from above the rope guide 12 , and the rope guide 13 guides the looped operation hanging down from the operation pulley 10 . The other side (rear side) of the rope 3 is suspended from above the rope guide 13 and below the rope guide 12 (see FIG. 2 ).

The operation panel 6 configured in this way is configured to perform a pendulum motion so as to increase the interval between the two-layer curtains 4 which are relatively movable when the operation cord 3 is operated. In particular, the operation plate 6 performs pendulum motion so as to change the positional relationship between the winding tube 9 and the support shaft 7 between the positional relationship at rest and the positional relationship at the time of operation. And the operation panel 6 is comprised so that the space|interval at the time of operation of the double screen 4 may be made larger than the space|interval at the time of rest.

Hereinafter, the operation of the operation panel 6 will be described in more detail with reference to FIG. 4 . First, referring to FIG. 4( a ), the operation plate 6 is supported so as to be rotatable relative to the operation pulley 10 and the winding tube 9 , and when the lower beam 5 is in a stationary state at the lower limit position, the middle position and the upper limit position, respectively, through the The self-weight (weight of the curtain fabric 4, the lower beam 5, the operation plate 6, the support plate 8, and the support shaft 7) is applied to the operation plate 6 in the direction in which the front and rear curtain fabrics 4 are brought into close contact, that is, the front side (in FIG. 4(a) ). is the torque in the clockwise direction). The operation cord 3 hangs down with the cord guides 12 and 13 as a reference.

In the stationary state in which the lower beam 5 is located at the lower limit position, or in the stationary state in which the lower beam 5 is located at the intermediate position or the upper limit position and the curtain fabric 4 is wound on the winding tube 9 with the winding diameter R, the double curtain fabrics 4 are in close proximity to each other Or the distance between the double-layered curtains 4 at the close position (the distance d1 of the double-layered curtains 4 ) is fixed. Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layered curtain 4 can be shifted to form a semi-light-transmitting state, or the light-transmitting portion 4b and the light-shielding portion 4a of the curtain 4 can be completely overlapped to form a light-shielding state. Light-shielding properties in a light-shielded state. In addition, from the viewpoint of improving the light-shielding properties of the double-layered curtain 4, it is preferable to attach the upper end of the curtain 4 to the front and rear of the curtain so that the position where the curtain 4 hangs from the winding pipe 9 and the support shaft 7 is overlapped in the front-rear direction in the lower limit state. Winding tube 9 and support shaft 7.

Next, referring to FIG. 4( b ), for example, when the lower beam 5 is lifted by operating the operation rope 3 from the state where the lower beam 5 is located at the lower limit position or the intermediate position, the screen cloth 4 is wound around the winding tube. 9 on. At this time, the operation rope 3 is in contact with the rope guide portion 12 on the indoor side, and a counterclockwise torque is applied to the operation panel 6, thereby driving the operation panel 6 to perform a pendulum motion, thereby reducing the interval between the operation of the double-layer curtain 4. d2 is greater than the interval d1 at rest. Therefore, during the lifting operation, the double-layer cord fabrics 4 move relatively without friction, or only generate friction in part of the lifting process, or the friction force is weakened, so there is no possibility of damaging the cord fabrics 4 .

Similarly, referring to FIG. 4( c ), when the lower beam 5 is lowered by operating the operation rope 3 from the state where the lower beam 5 is located at the intermediate position or the upper limit position, for example, the wire wound around the winding tube 9 The cord 4 is lowered. At this time, since the operation rope 3 is in contact with the rope guide portion 13 on the indoor side, a counterclockwise torque is applied to the operation panel 6, thereby driving the operation panel 6 to perform a pendulum motion, thereby making the operation of the double-layer curtain 4 easier. The interval d3 is greater than the interval d1 at rest. Therefore, during the lowering operation, the double-layer cord fabrics 4 move relatively without friction, or only generate friction in part of the lifting process, or the friction force is weakened, so there is no possibility of damaging the cord fabrics 4 . In addition, even if friction occurs locally when the material winding thickness of the cord fabric 4 is close to the upper limit, the friction force tends to be weakened.

Therefore, in the roller blind 1 of the first embodiment, during the raising and lowering operation, the operation plate 6 is rotated by the pulling force of the operation cord 3, so that the double-layered screen cloths 4 are relatively moved in a state of being separated from each other without friction. (Or, even if friction occurs, the friction is reduced), so there is no possibility (or a reduced possibility) of damaging the cord 4 . In addition, in the stationary state, the tension of the operation cord 3 is lost, and the operation panel 6 is rotated in the direction of approaching the double curtains 4 under the action of the own weight of the curtains 4 and the like, so that the distance between the double curtains 4 can be narrowed, or By closely adhering the double curtain fabric 4, the light-shielding property when the light-transmitting portion 4b and the light-shielding portion 4a of the curtain fabric 4 are completely overlapped to be in a light-shielding state can be improved.

[Second Embodiment]

Next, the configuration of the roller blind 1 according to the second embodiment of the present invention will be described with reference to FIGS. 5 to 7 . 5 is a front view showing a schematic configuration of the roller blind 1 according to the second embodiment of the present invention, and FIG. 6 is an exploded perspective view showing a schematic configuration around the operation panel 6 in the roller blind 1 according to the second embodiment of the present invention. In addition, (a), (b), (c) in FIG. 7 is a figure explaining the operation|movement of the operation panel 6 in the roller blind 1 which concerns on 2nd Embodiment of this invention. In addition, the same reference numerals are assigned to the constituent members that have the same functions as those of the first embodiment.

The other configuration of the roller blind 1 of the second embodiment shown in FIG. 5 is substantially the same as that of the first embodiment, except for the difference in the form of the support member 2a (and the support member 2b) and the operation panel 6 (and the support plate 8). same. Therefore, in the following description, the support member 2a and the operation panel 6 of 2nd Embodiment are mainly demonstrated.

The specific configuration of the operation panel 6 and its surroundings of the second embodiment will be described with reference to FIG. 6 . At the right end portion of the winding tube 9, the winding tube 9 is supported so as to be rotatable relative to the fixed shaft 11 extending from the support member 2a, as in the first embodiment. The operating pulley 10 is provided with a through hole, so that the fixed shaft 11 is used as a rotating shaft. The winding tube 9 can be rotated in accordance with the rotation of the operation pulley 10 .

Similar to the first embodiment, the right end portion of the operation pulley 10 is provided with a substantially cylindrical rotation support portion 24 . However, the operation panel 6 of the second embodiment is provided with a rotation receiving portion 23 having a diameter larger than that of the rotation support portion 24 and in the shape of an elongated hole. The elongated hole-shaped rotation receiving portion 23 is formed so as to straddle the fixed shaft 11 and to be rotatable with respect to a support shaft 16 to be described later, and the relative rotation angle is limited to a certain angle or less. The shape of the support plate 8 of this embodiment is substantially the same as that of the operation panel 6 of this embodiment, and the same elongated hole-shaped rotation receiving portion 23 (not shown) as the operation panel 6 of this embodiment is provided.

In addition, at a position above the outdoor side of the operation panel 6 of the second embodiment, there is provided a rotation shaft hole 27 through which the support shaft 16 extending from the support member 2a is inserted, so that the operation panel 6 uses the support shaft 16 as a Rotate the shaft to perform a pendulum motion. Similarly, at a position above the outdoor side of the support plate 8, a rotation shaft hole portion 27 (not shown) through which the support shaft 16 extending from the support member 2b is inserted is provided so that the support plate 8 can be supported by the support shaft. 16 performs a pendulum motion as an axis of rotation. In addition, it is good also as a structure in which the support shaft 16 is provided in each of the operation board 6 and the support board 8, and the rotation shaft hole part 27 is provided in each of the support members 2a and 2b.

Therefore, the operation plate 6 and the support plate 8 of the second embodiment can be relative to the operation pulley 10 and the winding tube in a state in which the pivot shaft 16 is used as the rotation axis and the rotation range is restricted by the long hole-shaped rotation receiving portion 23 . 9 to make a turn.

Similar to the first embodiment, other members, not shown, including a cord cover 20 are provided on the fixed shaft 11 above the operation panel 6 . Moreover, the rope cover 20 may be formed in the form attached to the support member 2a. In the lower portion of the operation panel 6, a hole portion 22 capable of supporting the support shaft 7 is provided. One end of the support shaft 7 can be attached to the operation panel 6 by a holding member 21 such as a rivet, and the support shaft 7 is held so as to extend between the support members 2a and 2b. The support shaft 7 may be attached so as to be rotatable with respect to the operation panel 6 or may be attached so as not to be able to rotate with respect to the operation panel 6 . When a ratchet mechanism or the like that can be rotated and can be held at the rotational position is provided, it is possible to finely adjust the height of the lower beam 5 when the screen cloth 4 is at the lower limit position.

However, the operation panel 6 of the second 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 is passed through the back side of the support shaft 7 . Therefore, in the present embodiment, the support shaft 7 is configured to have functions corresponding to the rope guide portions 12 and 13 of the first embodiment. Moreover, the cord guide part 14 is provided in the lower end part of the support member 2a, and the operation cord 3 hangs down from the front side of this cord guide part 14. As shown in FIG. That is, the endless operation rope 3 suspended from the operation pulley 10 is suspended from above the rope guide part 14 under the guidance of the rope guide part 14 after passing around the outside of the support shaft 7 (see FIG. 5 ). In addition, the shape of the support member 2b is substantially the same as the shape of the support member 2a except that the string guide portion 14 is not provided.

Therefore, the operation panel 6 of the second embodiment is also configured to perform pendulum motion so as to increase the interval between the relatively movable double-layer curtains 4 when the operation cord 3 is operated. In particular, the operation plate 6 performs pendulum motion so as to change the positional relationship between the winding tube 9 and the support shaft 7 between the positional relationship at rest and the positional relationship at the time of operation. And the operation panel 6 is comprised so that the space|interval at the time of operation of the double screen 4 may be made larger than the space|interval at the time of rest. In addition, the rope guide 14 is not necessary for the pendulum movement. Alternatively, two cord guides 12 and 13 as in the first embodiment may be provided on the front side of the screen 4 below the winding tube, and the operation cords 3 may be guided from the back of the cord guides 12 and 13, respectively. side pass. The portion of the support shaft 7 that is in contact with the operation cord 3 may be formed as another member that can rotate, thereby reducing resistance.

Hereinafter, the operation of the operation panel 6 of the second embodiment will be described in more detail with reference to FIG. 7 . First, referring to FIG. 7( a ), the operation plate 6 is supported so as to be rotatable relative to the operation pulley 10 and the winding tube 9 using the support shaft 16 as a rotation axis, and the lower beam 5 is at the lower limit position, When the intermediate position and the upper limit position are in a stationary state, the direction of making the front and rear curtains 4 close to each other is applied to the operation board 6 by its own weight (the weight of the curtain 4, the lower beam 5, the operation board 6, the support board 8, and the support shaft 7). That is, the torque on the front side (clockwise in FIG. 7( a )). And the operation cord 3 hangs down with reference to the cord guide part 14 provided in the support member 2a.

In the stationary state in which the lower beam 5 is located at the lower limit position, or in the stationary state in which the lower beam 5 is located at the intermediate position or the upper limit position and the curtain fabric 4 is wound on the winding tube 9 with the winding diameter R, the double curtain fabrics 4 are in close proximity to each other Or the distance between the double-layered curtains 4 at the close position (the distance d1 of the double-layered curtains 4 ) is fixed. Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layered curtain 4 can be shifted to form a semi-light-transmitting state, or the light-transmitting portion 4b and the light-shielding portion 4a of the curtain 4 can be completely overlapped to form a light-shielding state. Light-shielding properties in a light-shielding state. In addition, from the viewpoint of improving the light-shielding properties of the double-layered curtain 4, it is preferable to attach the upper end of the curtain 4 to the front and rear of the curtain so that the position where the curtain 4 hangs from the winding pipe 9 and the support shaft 7 is overlapped in the front-rear direction in the lower limit state. Winding tube 9 and support shaft 7.

Next, referring to FIG. 7( b ), when the lower beam 5 is lifted by operating the operation rope 3 from the state where the lower beam 5 is located at the lower limit position or the intermediate position, for example, the screen cloth 4 is wound around the winding tube. 9 on. At this time, the operating rope 3 uses the rope guide 14 as a fulcrum to apply torque to the support shaft 7, thereby driving the operating plate 6 to perform a pendulum motion, so that the interval d2 when the double-layer curtain 4 is operating is greater than that when it is stationary. interval d1. Therefore, during the lifting operation, the double-layer cord fabrics 4 move relatively without friction, or only generate friction in part of the lifting process, or the friction force is weakened, so there is no possibility of damaging the cord fabrics 4 .

Similarly, referring to FIG. 7( c ), when the lower beam 5 is lowered by operating the operation rope 3 from the state where the lower beam 5 is located at the intermediate position or the upper limit position, for example, the wire wound around the winding tube 9 The cord 4 is lowered. At this time, the operating rope 3 uses the rope guide 14 as a fulcrum to apply torque to the support shaft 7, thereby driving the operating plate 6 to make a pendulum motion, so that the interval d3 when the double-layer curtain 4 is operated is larger than that when it is stationary. interval d1. Therefore, during the lowering operation, the double-layer cord fabrics 4 move relatively without friction, or only generate friction in part of the lifting process, or the friction force is weakened, so there is no possibility of damaging the cord fabrics 4 .

Therefore, in the roller blind 1 of the second embodiment, during the raising and lowering operation, the operation plate 6 is rotated by the pulling force of the operation cord 3, so that the double-layered screen cloths 4 are moved relative to each other in a state of being separated from each other without friction. (Or, even if friction occurs, the friction is reduced), so there is no possibility of damaging the cord 4 . In addition, in the stationary state, the tension of the operation cord 3 is lost, and the operation panel 6 is rotated in the direction of approaching the double curtains 4 under the action of the own weight of the curtains 4 and the like, so that the distance between the double curtains 4 can be narrowed, or By closely adhering the double curtain fabric 4, the light-shielding property when the light-transmitting portion 4b and the light-shielding portion 4a of the curtain fabric 4 are completely overlapped to be in a light-shielding state can be improved.

Especially in the roller blind 1 of 2nd Embodiment, the installation space of the front-back width of the roller blind 1 based on the pendulum motion of the operation panel 6 can be reduced compared with 1st Embodiment. Moreover, by providing the cord guide portion 14, when the operation cord 3 is pulled downward, the operation plate 6 and the support plate 8 can be rotated in a direction in which the double-layered screen 4 is separated.

[Third Embodiment]

Next, the configuration of the roller blind 1 according to the third embodiment of the present invention will be described with reference to FIGS. 8 to 12 . 8 is a front view showing the schematic configuration of the roller blind 1 according to the third embodiment of the present invention, and FIG. 9 is an exploded perspective view showing the schematic configuration around the operation panel 6 in the roller blind 1 according to the third embodiment of the present invention. In addition, (a), (b), (c) in FIG. 10 is a figure explaining the operation|movement of the operation panel 6 in the roller blind 1 which concerns on 3rd Embodiment of this invention. (a), (b) in FIG. 11 is a figure explaining the operation|movement at the time of the operation of the operation panel 6 in the roller blind 1 which concerns on 3rd Embodiment of this invention. (a), (b) in FIG. 12 is a figure which demonstrates the operation panel 6 in the roller blind 1 which concerns on the 3rd Embodiment of this invention in comparison with a comparative example. In addition, the same reference numerals are assigned to the constituent members that have the same functions as those of the first embodiment.

The structure of the roller blind 1 according to the third embodiment shown in FIG. 8 is different from the first one, except that the operation pulley 10 , the support member 2 a (and the support member 2 b ), and the operation plate 6 (and the support plate 8 ) are different in form. The configuration of the embodiment is substantially the same. Therefore, in the following description, the support member 2a and the operation panel 6 of 3rd Embodiment are mainly demonstrated.

The specific configuration of the operation panel 6 and its surroundings of the third embodiment will be described with reference to FIG. 9 . At the right end portion of the winding tube 9, the winding tube 9 is supported so as to be rotatable relative to the fixed shaft 11 extending from the support member 2a, as in the first embodiment. The operating pulley 10 is provided with a through hole, so that the fixed shaft 11 is used as a rotating shaft. The winding tube 9 can be rotated in accordance with the rotation of the operation pulley 10 .

The operation panel 6 of the third embodiment has an elongated shape, and is provided between the operation pulley 10 and the support member 2 a near the outside of the room so as to avoid the fixed shaft 11 , and the operation panel 6 is provided with There is a rotation shaft hole portion 27 through which the support shaft 16 extending from the support member 2a is inserted, so that the operation panel 6 performs a pendulum motion with the support shaft 16 as a rotation shaft. As in the first embodiment, a hole 22 is provided in the lower portion of the operation panel 6 for attaching one end of the support shaft 7 extending between the support members 2a and 2b to the operation panel by a holding member 21 such as a rivet. 6 on.

The shape of the support plate 8 of this embodiment is also substantially the same as that of the operation panel 6 of this embodiment. The support shaft 7 may be attached so as to be rotatable relative to the operation plate 6 and the support plate 8 , or may be attached so as not to be able to rotate relative to the operation plate 6 and the support plate 8 . Alternatively, the operation plate 6 and the support plate 8 may be provided with the support shaft 16, and the support members 2a and 2b may be provided with the rotation shaft hole portions 27, respectively.

The operation plate 6 and the support plate 8 of the third embodiment are rotatable with respect to the operation pulley 10 and the winding tube 9 using the support shaft 16 as a rotation axis. The position of the pendulum movement is determined according to the own weight of the lower beam 5 and the like at the lower end portion of the curtain 4 which is suspended and supported on the support shaft 7 and the winding tube 9 .

The operation plate 6 and the support plate 8 of the third embodiment thus constituted are rotatable relative to the operation pulley 10 and the winding tube 9, and can swing with the support shaft 16 as a rotation axis by the self-weight of the screen cloth 4 and the like. sports.

A rope cover 20 (not shown) is disposed above the support member 2a so as to prevent the operation rope 3 hanging around the operation pulley 10 from falling off. In addition, the rope cover 20 may be constituted by another member fixed to the fixed shaft 11 .

Furthermore, the operation panel 6 of 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 is passed through the back side of the support shaft 7 . Therefore, in the present embodiment, the support shaft 7 is configured to have functions corresponding to the rope guide portions 12 and 13 of the first embodiment. Moreover, the cord guide part 14 is provided in the lower end part of the support member 2a, and the operation cord 3 hangs down from the front side of this cord guide part 14. As shown in FIG. That is, the looped operation rope 3 suspended from the operation pulley 10 is suspended from above the rope guide part 14 under the guidance of the rope guide part 14 after passing around the outdoor side of the support shaft 7 (see FIG. 8 ). In addition, the shape of the support member 2b is substantially the same as the shape of the support member 2a except that the string guide portion 14 is not provided.

Therefore, the operation panel 6 of the third embodiment is also configured to perform pendulum motion so as to increase the interval between the two-layer curtains 4 that are relatively movable when the operation cord 3 is operated. In particular, the operation plate 6 performs pendulum motion so as to change the positional relationship between the winding tube 9 and the support shaft 7 between the positional relationship at rest and the positional relationship at the time of operation. And the operation panel 6 is comprised so that the space|interval at the time of operation of the double screen 4 may be made larger than the space|interval at the time of rest.

Hereinafter, the operation of the operation panel 6 of the third embodiment will be described in more detail with reference to FIGS. 10 to 12 . First, referring to FIG. 10( a ), the operation plate 6 is supported so as to be rotatable relative to the operation pulley 10 and the winding tube 9 using the support shaft 16 as a rotation axis, and the lower beam 5 is stationary at the lower limit position. In the state, the operation panel 6 is applied to the direction in which the front and rear curtains 4 are brought into close contact, that is, the front side by its own weight (the weight of the curtain 4, the lower beam 5, the operation panel 6, the support plate 8, and the support shaft 7) (Fig. 10). (a) is the torque in the clockwise direction). And the operation cord 3 hangs down with reference to the cord guide part 14 provided in the support member 2a.

When the lower beam 5 is in a static state at the lower limit position, the interval between the double-layer curtains 4 is fixed when the double-layered curtains 4 are in the position close to or close to each other (the distance between the double-layered curtains 4 is d1 ). Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layered curtain 4 can be shifted to form a semi-light-transmitting state, or the light-transmitting portion 4b and the light-shielding portion 4a of the curtain 4 can be completely overlapped to form a light-shielding state. Light-shielding properties in a light-shielded state. In addition, from the viewpoint of improving the light-shielding properties of the double-layered curtain 4, it is preferable to attach the upper end of the curtain 4 to the front and rear of the curtain so that the position where the curtain 4 hangs from the winding pipe 9 and the support shaft 7 is overlapped in the front-rear direction in the lower limit state. Winding tube 9 and support shaft 7.

10 (b), when the lower beam 5 is in a stationary state at the intermediate position, as the lower beam 5 moves from the lower limit position to the upper limit position, the roll of the curtain fabric 4 wound around the winding tube 9 is The diameter R continues to increase, and the position of the curtain 4 hanging down by the own weight of the curtain 4 moves toward the outside of the room. However, before reaching a predetermined height, the distance between the double curtains 4 is reduced or the position of the double curtains 4 is not close to each other. (the interval d1'≈d1 of the double cord fabric 4). Therefore, when the curtain fabric 4 is located at a position below the intermediate position, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layered curtain fabric 4 can be shifted to form a semi-transparent state, or the light-transmitting portion 4b and the light-shielding portion of the curtain fabric 4 can be made into a semi-transparent state. 4a is completely overlapped and formed in a light-shielding state, and especially the light-shielding property in the light-shielding state can be improved.

10 (c), when the lower beam 5 is in a stationary state at the upper limit position, the winding diameter R of the screen cloth 4 wound around the winding tube 9 is increased to the maximum, and the self-weight of the screen cloth 4 and the like is increased. While the position of the hanging screen cloth 4 is further moved to the outdoor side, in this state, the position at which the distance between the double screen cloths 4 is reduced is also fixed.

However, in this state, since the curtain fabric 4 itself is in an open state, it is necessary to pay attention to the approaching state of the double curtain fabric 4 when stationary, so as to prevent practical problems.

Next, referring to FIG. 11( a ), when the lower beam 5 is lifted by operating the operation rope 3 from the state where the lower beam 5 is located at the lower limit position, for example, the screen cloth 4 is wound around the winding tube 9 . At this time, the operating rope 3 uses the rope guide 14 as a fulcrum to apply torque to the support shaft 7, thereby driving the operating plate 6 to perform a pendulum motion, so that the interval d2 when the double-layer curtain 4 is operating is greater than that when it is stationary. interval d1. Therefore, during the ascending operation, the double-layer cord fabric 4 moves relatively without friction, or only rubs in part of the lifting process, or the friction force is weakened, so there is no possibility of damaging the cord fabric 4 .

Similarly, referring to FIG. 11( b ), when the lower beam 5 is lowered by operating the operation rope 3 from, for example, the state where the lower beam 5 is located at the intermediate position or the upper limit position, the lower beam 5 is wound around the winding tube 9 The cord 4 is dropped. At this time, the operating rope 3 uses the rope guide 14 as a fulcrum to apply torque to the support shaft 7, thereby driving the operating plate 6 to make a pendulum motion, so that the interval d3 when the double-layer curtain 4 is operated is larger than that when it is stationary. interval d1. Therefore, during the lowering operation, the double-layer cord fabrics 4 move relatively without friction, or only generate friction in part of the lifting process, or the friction force is weakened, so there is no possibility of damaging the cord fabrics 4 .

Here, in order to explain the precautions in the pendulum motion of the operation panel 6 according to the third embodiment, FIG. 12( b ) shows that it is different from the present embodiment shown in FIG. 12( a ), but A comparative example in which the support shaft 16 of the operation panel 6 is arranged at a position close to the fixed shaft 11 . In the present embodiment shown in FIG. 12( a ), when the lower beam 5 is in a stationary state at the lower limit position, under the action of the self-weight of the curtain cloth 4 and the like suspended and supported by the support shaft 7 and the winding tube 9 , when the double-layer curtain fabrics 4 are in a position close to or close to each other (interval d1 of the double-layer curtain fabrics 4 ), the interval between the double-layer curtain fabrics 4 is fixed.

On the other hand, in the comparative example shown in FIG. 12( b ), since the support shaft 16 is arranged at a position closer to the fixed shaft 11 , the interval D of the double-layer cord 4 becomes larger (D>d1 ) , which is not ideal. Therefore, although the preferred position of the support shaft 16 is related to the diameter of the support shaft 7 or the winding tube 9 and the distance between the support shaft 7 and the winding tube 9, it is preferable that the lower beam 5 is in a stationary state at the lower limit position It is determined as a reference so that the interval between the double-layered curtains 4 may be narrowed or the double-layered curtains 4 may be brought into close contact with each other.

Therefore, in the roller blind 1 of the third embodiment, during the raising and lowering operation, the operation plate 6 is rotated by the pulling force of the operation cord 3, so that the double screen cloth 4 is relatively moved in a state of being separated from each other without friction. (Or, even if friction occurs, the friction is reduced), so there is no possibility of damaging the cord 4 . In addition, in the stationary state, the tension of the operation cord 3 is lost, and the operation panel 6 is rotated in the direction of approaching the double curtains 4 under the action of the own weight of the curtains 4 and the like, so that the distance between the double curtains 4 can be narrowed, or By closely adhering the double curtain fabrics 4 to each other, it is possible to improve the light-shielding property when the light-transmitting portion 4b and the light-shielding portion 4a of the curtain fabric 4 are completely overlapped to form a light-shielding state.

In particular, in the roller blind 1 of the third embodiment, since the support shaft 7 is arranged in the indoor side and is formed into a plate structure in which the support shaft 7 is arranged to swing downwardly in the indoor side, it is possible to reduce the size of the base material compared with the first embodiment. The installation space of the front and rear width of the roller blind 1 is determined by the pendulum movement of the operation panel 6 .

[Fourth Embodiment]

Next, with reference to FIGS. 13-14, the structure of the roller blind 1 concerning 4th Embodiment of this invention which is a modification of 1st Embodiment is demonstrated. FIG. 13 is an exploded perspective view showing a schematic configuration around the operation panel 6 in the roller blind 1 according to the fourth embodiment of the present invention.

In addition, (a), (b), (c) in FIG. 14 is a figure explaining the operation|movement of the operation panel 6 in the roller blind 1 which concerns on 4th Embodiment of this invention. In addition, the same reference numerals are assigned to the constituent members that have the same functions as those of the first embodiment.

The structure of the roller blind 1 shown in FIGS. 13 and 14 is the same as that of the first one, except that a winding gear mechanism (driving gear 31 , transmission gear 32 , and driven gear 33 ) is provided between the operation plate 6 and the operation pulley 10 . The configuration of the embodiment is the same. Therefore, in the following description, the operation panel 6 , the operation pulley 10 , and the winding gear mechanism (driving gear 31 , transmission gear 32 , and driven gear 33 ) of the fourth embodiment will be mainly described.

The specific structure of the operation panel 6 and its surroundings of 4th Embodiment is demonstrated with reference to FIG. 13. FIG. At the right end portion of the winding tube 9, the winding tube 9 is supported so as to be rotatable relative to the fixed shaft 11 extending from the support member 2a, as in the first embodiment. The operating pulley 10 is provided with a through hole, so that the fixed shaft 11 is used as a rotating shaft. The winding tube 9 can be rotated in accordance 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 portion of the operation pulley 10 , and a substantially cylindrical rotation support portion 24 is provided at the right end of the drive gear 31 as in the first embodiment. In addition, the operation panel 6 is provided with a rotation receiving portion 23 having a diameter slightly larger than the rotation supporting portion 24 and in the shape of a circular hole. Therefore, the operation plate 6 is supported so as to be rotatable with respect to the fixed shaft 11 , the operation pulley 10 , and the winding tube 9 .

Further, the right end portion of the support shaft 7 extending between the support members 2a and 2b is provided with a driven gear 33 for rotating the support shaft 7, and the operation plate 6 is provided with a hole 22 through which a holding member such as a rivet passes. 21 supports the driven gear 33 so as to be rotatable with respect to the operation plate 6 .

Further, a transmission gear 32 for transmitting the rotation of the drive gear 31 to the driven gear 33 is attached to the operation plate 6 so as to be rotatable with respect 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 .

Therefore, when the winding tube 9 is used as the first winding shaft for the screen cloth 4 , the support shaft 7 functions as the second winding shaft for the screen cloth 4 . In addition, the diameter of the first winding shaft is larger than the diameter of the second winding shaft. The number of teeth of the driving gear 31 and the driven gear 33 are the same, so that the number of rotations of the second winding shaft is the same as the number of rotations of the first winding shaft. Therefore, the winding length of the screen cloth 4 per unit number of rotations of the first winding shaft is different from the winding length of the screen cloth 4 per unit number of rotations of the second winding shaft. When the operation rope 3 is pulled to rotate the operation pulley 10 in the winding direction, the first winding shaft rotates to wind the screen cloth 4, and the second winding shaft also winds the screen cloth 4, thereby raising the lower beam 5. During the ascending period, the ascending speed of the curtain fabric 4 on the front side wound on the first winding shaft is different from the ascending speed of the curtain fabric 4 on the rear side wound on the second winding shaft (the rotation of the first winding shaft speed>rotational speed of the second winding shaft), therefore, the state where the light shielding portion 4a overlaps the light transmitting portion 4b and the state where the light shielding portion 4a and the light shielding portion 4a overlap alternately occur. This situation is also the same at the time of unwinding. In the state where the screen cloth 4 is located at the lower limit position, the light-shielding portion 4a and the light-transmitting portion 4b are overlapped, and the light-shielding state is obtained.

The operation panel 6 of the fourth embodiment thus constituted also performs pendulum motion so as to increase the interval between the two-layer curtains 4 that are relatively movable even when the operation cord 3 is operated. In particular, the operation plate 6 performs pendulum motion so as to change the positional relationship between the winding tube 9 and the support shaft 7 between the positional relationship at rest and the positional relationship at the time of operation. And the operation panel 6 is comprised so that the space|interval at the time of operation of the double screen 4 may be made larger than the space|interval at the time of rest.

Hereinafter, the operation of the operation panel 6 will be described in more detail with reference to FIG. 14 . First, referring to FIG. 14( a ), the operation plate 6 is supported so as to be rotatable relative to the operation pulley 10 and the winding tube 9 , and when the lower beam 5 is in a stationary state at the lower limit position, the intermediate position and the upper limit position, respectively, the The self-weight (weight of the curtain 4, the lower beam 5, the operation plate 6, the support plate 8, and the support shaft 7) is applied to the operation plate 6 in the direction in which the front and rear curtains 4 are brought into close contact, that is, the front side (in FIG. 14(a) ). is the torque in the clockwise direction). The operation cord 3 hangs down with the cord guides 12 and 13 as a reference.

In this example, when the lower beam 5 is in a stationary state at the lower limit position, the curtain fabric 4 is set in a state in which it is not wound around the winding tube 9 and the support shaft 7, so that the double curtain fabric 4 is in a state close to or in close contact with each other. The interval of the double-ply cord 4 in the position (the space d1 of the double-ply ply 4) is constant. In addition, from the viewpoint of improving the light-shielding properties of the double-layered curtain 4, it is preferable to attach the upper end of the curtain 4 to the front and rear of the curtain so that the position where the curtain 4 hangs from the winding pipe 9 and the support shaft 7 is overlapped in the front-rear direction in the lower limit state. Winding tube 9 and support shaft 7.

Moreover, when the lower beam 5 is located at the middle position or the upper limit position, and the curtain fabrics 4 are wound on the winding tube 9 and the support shaft 7 with the winding diameters R1 and R2, respectively, the double-layered curtain fabrics 4 are close to each other or in close contact with each other. The interval of the double-layer curtain 4 in the position is also fixed. In addition, in the fourth embodiment, since the winding gear mechanism (the driving gear 31, the transmission gear 32, the driven gear 33) is provided, the cord fabric 4 is wound around the winding tube with the winding diameters R1 and R2, respectively. 9 and the support shaft 7, in the range from the lower limit position of the lower beam 5 to the upper limit position, the adhesion of the double cord fabric 4 is improved.

Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layered curtain 4 can be shifted to form a semi-light-transmitting state, or the light-transmitting portion 4b and the light-shielding portion 4a of the curtain 4 can be completely overlapped to form a light-shielding state. Light-shielding properties in a light-shielded state.

Next, referring to FIG. 14( b ), when the lower beam 5 is lifted by operating the operation rope 3 from the state where the lower beam 5 is located at the lower limit position or the intermediate position, for example, the screen cloth 4 is wound around the winding tube 9 and support shaft 7. At this time, torque is applied to the rope guide portion 12 through the operating rope 3, thereby driving the operating plate 6 to make a pendulum motion, so that the interval d2 during operation of the double-layer curtain 4 is larger than the interval d1 when it is stationary. Therefore, during the lifting operation, even if the front and rear curtains 4 move relative to each other due to different lifting speeds, the double curtains 4 will not cause friction during the relative movement, or only generate friction in part of the lifting process, or the frictional force will be weakened. There is no possibility of damaging the cord 4 .

Similarly, referring to FIG. 14( c ), when the lower beam 5 is lowered by operating the operation rope 3 from the state where the lower beam 5 is located at the intermediate position or the upper limit position, for example, the lower beam 5 is wound around the winding tube 9 and the support. The curtain 4 on the shaft 7 is lowered. At this time, torque is applied to the rope guide portion 13 by operating the rope 3, thereby driving the operating plate 6 to perform a pendulum motion, so that the interval d3 during operation of the double cord fabric 4 is larger than the interval d1 when it is stationary. Therefore, during the lowering operation, even if the front and rear curtains 4 move relative to each other due to different descending speeds, the relative movement of the double curtains 4 will not generate friction, or only generate friction in part of the lifting process, or the frictional force will be weakened. There is no possibility of damaging the cord 4 .

Therefore, during the raising and lowering operation, the operation plate 6 is rotated by the pulling force of the operation cord 3, so that the double-layer curtains 4 are moved relative to each other in a state of being separated from each other without generating friction (or, even if friction is generated, the friction is weakened). ), so there is no possibility of damaging the cord 4. In addition, in the stationary state, the tension of the operation cord 3 is lost, and the operation panel 6 is rotated in the direction of approaching the double curtains 4 under the action of the own weight of the curtains 4 and the like, so that the distance between the double curtains 4 can be narrowed, or By closely adhering the double curtain fabrics 4 to each other, it is possible to improve the light-shielding property when the light-transmitting portion 4b and the light-shielding portion 4a of the curtain fabric 4 are completely overlapped to form a light-shielding state.

In particular, in the roller blind 1 of the fourth embodiment, since the winding gear mechanism (the driving gear 31, the transmission gear 32, the driven gear 33) is provided, the shade 4 is wound with the winding diameters R1 and R2, respectively. In the winding tube 9 and the support shaft 7, in the range from the lower limit position of the lower beam 5 to the upper limit position, the adhesiveness of the double cord fabric 4 is improved.

In addition, it is also possible to switch between the state in which the light-shielding portion 4a and the light-transmitting portion 4b of the front and rear curtains 4 overlap and the state in which the light-shielding portion 4a (or the light-transmitting portion 4b) of each of the front and rear curtains 4 overlaps with the above-described configuration. However, by adding the following With this configuration, the amount of vertical movement of the lower beam 5 during switching can be reduced. Regarding the winding gear mechanism (driving gear 31 , transmission gear 32 , driven gear 33 ), any one or both of the driving gear 31 and the driven gear 33 may be further provided with an idling device, wherein the idling device The idling amount corresponds to the time from the light-shielding state in which the light-transmitting portion 4b and the light-shielding portion 4a of the double-layer curtain 4 are overlapped to the semi-light-transmitting state in which the light-transmitting portion 4b and the light-shielding portion 4a of the double-ply curtain 4 are staggered. Moving distance. For details of the idling device, refer to, for example, Japanese Patent Laid-Open No. 2012-77501.

As mentioned above, although an example of a specific embodiment was given and this invention was demonstrated, this invention is not limited to the said embodiment example, Various deformation|transformation is possible in the range which does not deviate from the technical idea.

For example, as a modification of the first embodiment, the example of the fourth embodiment in which the winding gear mechanism (the drive gear 31 , the transmission gear 32 , and the driven gear 33 ) is provided has been described. However, as the second embodiment Alternatively, as a modification of the third embodiment, the technical solutions of the respective embodiments may be combined and applied, and the winding gear mechanism may be provided.

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

In addition, in the examples of each of the above-described embodiments, on the double-layered fabric 4 formed by folding back a single fabric, the light-transmitting portions 4b for transmitting part of the light and the light-shielding portions 4a for shielding the light are alternately formed in stripes. The example of the present invention has been described. However, the operation panel 6 according to the present invention has the following effects even if it is a double-layered fabric, even if it is not a single fabric or a form in which the light-transmitting portion 4b and the light-shielding portion 4a are alternately formed. That is, during the lifting operation, the operating plate 6 is rotated by the pulling force of the operating rope 3, so that the double-layer curtains 4 are moved relative to each other in a state of being separated from each other without friction, or only in part of the lifting process. Friction is generated, or the friction force is weakened.

The external shapes of the support members 2a and 2b, the operation plate 6 and the support plate 8, the shapes of the cord guides 12, 13, and 14, etc. can be formed in various shapes as long as the functions and effects of the present invention can be produced.

In addition, in each embodiment, the state in which the support plate 8 also performs the pendulum motion in accordance with the pendulum motion of the operation panel 6 has been described. The plate 6 is in a pendulum motion, thereby in operation a configuration in which the spacing of the double cords which are close to or abut against each other at rest is increased. For example, the first embodiment and the second embodiment (or the fourth embodiment or its modification) may be combined to form a configuration in which the support plate 8 is not provided, and the support shaft is provided on the support member 2b A guide hole for rotation at the end of the operation panel 7, and the guide hole for rotation is appropriately provided with a rotation restricting function, so that the guide hole for rotation guides the end of the support shaft 7 that rotates with the pendulum movement of the operation panel 6. Therefore, only by the pendulum movement of the operating panel 6, the distance between the double-layer curtains which are close to or close to each other at rest during operation is increased.

In addition, a wall portion (cover) erected upward from the support shaft 7 may be provided to prevent light leakage between the winding tube 9 and the mounting surface on the ceiling side of the mounting frame 2 .

[Fifth Embodiment]

Next, the configuration of the roller blind 1 according to the fifth embodiment of the present invention will be described with reference to FIGS. 15 to 18 . In each of the above-described embodiments, an example in which one side of the screen cloth 4 is attached to the winding tube 9 and the other side is attached to the support shaft 7 has been described, but in the example of this embodiment, one side of the screen cloth 4 is attached to The other side of the winding tube 9 is attached to a fixing portion 2 c provided on the outdoor side end surface of the mounting frame 2 . 15 is a front view showing the schematic configuration of the roller blind 1 according to the fifth embodiment of the present invention, and FIG. 16 is a side view showing the schematic configuration of the roller blind 1 according to the fifth embodiment of the present invention. FIG. 17 is an exploded perspective view showing a schematic configuration around the operation unit 60 in the roller blind 1 according to the fifth embodiment of the present invention. In addition, (a), (b), (c) in FIG. 18 is a figure explaining the operation|movement of the operation unit 60 in the roller blind 1 which concerns on 5th Embodiment of this invention. In addition, the same reference numerals are assigned to the same components as those of the above-described respective embodiments.

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

The right end portion of the winding tube 9 is provided with an operation unit 60 that is rotatable relative to the winding tube 9 and the support members 2a and 2b. In addition, the operation unit 60 accommodates the operation pulley 10, and the loop-shaped operation rope 3 is hung around the operation pulley 10 and hangs down therefrom. Furthermore, the roller blind 1 is configured so that the winding tube 9 can be rotated by the operation of the operation cord 3, and the surface of the operation pulley 10 on which the operation cord 3 is hung has a high friction surface shape. In addition, this operation rope 3 is comprised by the ball chain, and the surface of the operation pulley 10 which hangs this ball chain may be formed so that it may have unevenness|corrugations which correspond to the ball part of this ball chain. Note that the specific configuration and operation of the operation unit 60 will be described in detail later.

One side of the curtain fabric 4 is mounted on the winding tube 9, and the curtain fabric 4 is suspended and supported on the winding tube 9 in a rollable manner. The other side where the beam 5 is folded back is attached to a fixing portion 2 c provided on the outdoor side end surface of the mounting frame 2 located at the upper portion of the winding tube 9 . For example, the fixing|fixed part 2c can be comprised so that the material|dough holding board fixed to the edge part of the screen cloth 4 by welding etc. can be latched in this fixing|fixed part 2c so that attachment or detachment is possible. Further, rollers 15 are inserted through the lower end portions of the screen cloth 4 hanging down from between the winding tube 9 and the fixing portion 2 c , and the rollers 15 are rotatably supported at both end portions of the lower beam 5 . Thereby, the screen cloth 4 is arranged to be tensioned by the weight of the lower beam 5 .

Therefore, when the operation cord 3 is operated to rotate the winding tube 9 in the carcass winding direction, the lower beam 5 rises, and when the winding tube 9 is rotated in the carcass unwinding direction, the lower beam 5 descends.

In addition, a barrel for reducing the operating force when winding up the screen cloth 4 is housed at the left end position inside the winding tube 9, and a braking device or the like for preventing the screen cloth 4 from falling due to its own weight is housed at the right end position (not shown). icon).

The curtain 4 is alternately formed with light-transmitting parts 4b that allow part of the light to pass through and light-shielding parts 4a that block the light in stripes, and the curtain 4 is suspended and supported in a double-layered state. Therefore, by the operation of the operating rope 3 By relatively moving the front and rear curtain fabrics 4 in the up-down direction, the overlapping degree of the light-transmitting portion 4b and the light-shielding portion 4a can be adjusted, so that the amount of lighting can be adjusted.

Next, the specific configuration of the operation unit 60 and its surroundings will be described with reference to FIGS. 15 , 16 , and 17 . The operation unit 60 is composed of two operation panel members 6a and 6b which are integrally formed so as to be able to sandwich and accommodate the operation pulley 10 and the rope cover 20 inside. The operation panel member 6b is provided with protrusion-shaped cord guides 12 and 13 extending linearly toward the operation panel member 6a. The loop-shaped operation rope 3 hung around the operation pulley 10 hangs downward under the guidance of the rope guides 12 and 13 . The rope cover 20 is fixed to the support member 2a. In addition, the rope cover 20 may be in any form as long as it is provided so as to prevent the operation rope 3 hooked on the pulley 10 from slipping off the pulley 10 , for example, other than the form housed inside the operation unit 60 as shown in the figure. , and may be fixed to the fixed shaft 11 or the support member 2a.

In this example, two rope guides 12 are provided above the rope guides 13 , and one side (front side) of the looped operation rope 3 hanging down from the operation pulley 10 is guided from the rope guide 12 (front side) The other side (rear side) of the loop-shaped operation rope 3 hanging down from the operation pulley 10 is guided to pass between the rope guide part 13 and hang down from the rope guide part 12 (rear side) and the rope guide part 13 Pass through and hang down (see Figure 16).

The operation pulley 10 is provided with a through hole, and a fixed shaft 11 extending from the support member 2 a is used as a rotating shaft, and the winding tube 9 is rotatable together with the rotation of the operation pulley 10 through the fixed shaft 11 . be supported. For this purpose, a fitting portion 25 to which the inner peripheral surface of the right end of the winding tube 9 is fitted is provided on the left end side of the operation pulley 10 . In addition, the left end portion of the operation pulley 10 meshes with a gear mechanism (not shown) connected to the braking device accommodated in the winding tube 9 . When the acceleration or deceleration is not required, the gear mechanism may be omitted, and the winding tube 9 may be directly connected to the operation pulley 10 .

The operation panel member 6a is provided with a rotation receiving portion 23a having a diameter larger than the outer diameter of the frame of the operation pulley 10 and in the shape of a circular hole, and the operation panel member 6b is provided with a rotation receiving portion 23a having a diameter larger than the outer diameter of the winding tube 9 and in the shape of a semi-circular hole. receiving portion 23b. Therefore, the operation unit 60 is supported so as to be rotatable with respect to the operation pulley 10 and the winding tube 9 . Moreover, the recessed part 20a is provided above the cord cover 20 fixed to the support member 2a, and the protruding piece 61 of the substantially inverted trapezoid shape is provided above the operation panel member 6a. In a state in which the two operation panel members 6a and 6b are integrally formed so as to be able to sandwich and accommodate the operation pulley 10 and the cord cover 20 inside, the protruding piece 61 is engaged with the concave portion so as to be rotatable within a predetermined range. 20a.

In addition, on the inner wall of the upper protruding piece of the cord cover 20 capable of accommodating the operation panel member 6b inside, there is provided a stepped portion 20b that restricts the relative rotation of the operation unit 60 within a certain angle. That is, when the operation unit 60 is relatively rotated, the stepped portion 20b can abut against the edge portions 26 on both sides of the upper end of the cord guide portion 12 of the operation panel member 6b. Therefore, the relative rotation of the operation unit 60 is restricted within a certain angle by the abutment between the edge portion 26 and the stepped portion 20b.

On the other hand, at the outdoor side end portion of the bottom surface of the mounting frame 2 whose both ends are fixed to the support members 2a, 2b, a substantially fin-shaped movable fin 40 is suspended so as to surround the base of the movable fin 40. The shaft rotates. Furthermore, since the screen cloth 4 hangs down from the fixing portion 2c provided on the outdoor side end surface of the mounting frame 2, when the operation unit 60 is relatively rotated, the side end portion of the protruding piece 61 of the operation panel member 6a is pressed against the adjustable portion 2c. When the vane 40 is moved, the movable vane 40 is rotated, and the screen cloth 4 on the outdoor side is further moved toward the outdoor side.

The operation unit 60 thus configured is configured to perform a pendulum motion so as to increase the interval between the two-layer curtains 4 that are relatively movable when the operation cord 3 is operated. And the operation means 60 is comprised so that the space|interval at the time of operation of the double screen 4 becomes larger than the space|interval at the time of stationary.

Hereinafter, the operation of the operation unit 60 will be described in more detail with reference to FIG. 18 . First, referring to FIG. 18( a ), the operation unit 60 is supported so as to be rotatable relative to the operation pulley 10 (and the winding tube 9 ) when the lower beam 5 is in a stationary state at the lower limit position, the intermediate position and the upper limit position, respectively , a torque in a direction in which the front and rear curtains 4 are brought into contact with each other is applied to the operation unit 60 by its own weight (weight of the curtain 4, the lower beam 5, etc.). Thereby, the operation cord 3 hangs down with the cord guides 12 and 13 as a reference.

In the stationary state in which the lower beam 5 is located at the lower limit position, or in the stationary state in which the lower beam 5 is located at the intermediate position or the upper limit position and the curtain fabric 4 is wound on the winding tube 9 with a prescribed winding diameter, the double curtain fabrics 4 are in each other. The distance between the double curtain fabrics 4 at the position close to or close to each other (the distance d1 between the double curtain fabrics 4 ) is constant. Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layered curtain 4 can be shifted to form a semi-light-transmitting state, or the light-transmitting portion 4b and the light-shielding portion 4a of the curtain 4 can be completely overlapped to form a light-shielding state. Light-shielding properties in a light-shielded state.

Next, referring to FIG. 18( b ), when the lower beam 5 is lifted by operating the operation rope 3 from the state where the lower beam 5 is located at the lower limit position or the intermediate position, for example, the screen cloth 4 is wound around the winding tube 9 on. At this time, the operation cord 3 abuts against the cord guide portion 12 on the indoor side to apply a clockwise torque to the operation unit 60, thereby driving the operation unit 60 to perform a pendulum motion. The side end portion rotates the movable vane 40 to push the screen 4 on the outside of the chamber. Therefore, the interval d2 at the time of operation of the double-ply fabric 4 is larger than the interval d1 at the time of rest. Therefore, during the lifting operation, the double-layer cord fabrics 4 move relatively without friction, or only generate friction in part of the lifting process, or the friction force is weakened, so there is no possibility of damaging the cord fabrics 4 .

Similarly, referring to FIG. 18( c ), when the lower beam 5 is lowered by operating the operation rope 3 from the state where the lower beam 5 is located at the intermediate position or the upper limit position, for example, the wire wound around the winding tube 9 The cord 4 is lowered. At this time, the operation cord 3 abuts against the cord guide portion 13 on the indoor side and applies a clockwise torque to the operation unit 60, thereby driving the operation unit 60 to perform a pendulum motion. The side end portion rotates the movable vane 40 to push the screen 4 on the outside of the chamber. Therefore, the interval d3 at the time of operation of the double-layer screen 4 is larger than the interval d1 at the time of rest. Therefore, during the lowering operation, the double-layer cord fabrics 4 move relatively without friction, or only generate friction in part of the lifting process, or the friction force is weakened, so there is no possibility of damaging the cord fabrics 4 . In addition, even if friction occurs when the material winding thickness of the cord fabric 4 is close to the upper limit, the friction force tends to decrease.

Therefore, in the roller blind 1 of the fifth embodiment, during the raising and lowering operation, the operation unit 60 is rotated by the pulling force of the operation cord 3, so that the double-layered screen cloths 4 are moved relative to each other in a state of being separated from each other without friction. (Or, even if friction occurs, the friction is reduced), so there is no possibility (or a reduced possibility) of damaging the cord 4 . In addition, in the stationary state, the operation cord 3 loses tension, and the operation unit 60 rotates in the direction of approaching the double curtain 4 under the action of the own weight of the curtain 4 and the like. Therefore, the distance between the double curtain 4 can be narrowed, or the double curtain 4 can be reduced. The double curtain fabrics 4 are in close contact with each other, so that the light-shielding property can be improved when the light-transmitting portion 4b and the light-shielding portion 4a of the curtain fabric 4 are completely overlapped to form a light-shielding state.

Here, the form of the operation panel members 6a and 6b, the cord cover 20 and the like constituting the operation unit 60 may be other forms such as those shown in FIG. 19 as long as they have the functions described above. (a), (b), (c) in FIG. 19 is a figure explaining the operation|movement of the operation unit 60 in the modification of the roller blind 1 which concerns on 5th Embodiment of this invention. In the example shown in FIG. 19, the operation unit 60 is provided with one rope guide part 12, 13, respectively. In addition, the protruding piece 61 of the operation panel member 6a is provided with a rotation restricting shaft 63, and the relative rotation of the operation unit 60 is restricted within a certain angle by the rotation restricting groove 62 provided in the protruding piece extending upward of the cord cover 20. . Alternatively, the rotation restricting groove 62 may be provided in the protruding piece 61 of the operation panel member 6a, and the rotation restricting shaft 63 may be provided in the protruding piece extending upward of the cord cover 20, so that the operation unit 60 does not need to be opposed to each other. When the rotation is restricted 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. 19( a ), the operation unit 60 is supported so as to be rotatable relative to the operation pulley 10 (and the winding tube 9 ) when the lower beam 5 is in a stationary state at the lower limit position, the intermediate position and the upper limit position, respectively , a torque in a direction in which the front and rear curtains 4 are brought into contact with each other is applied to the operation unit 60 by its own weight (weight of the curtain 4, the lower beam 5, etc.). Thereby, the operation cord 3 hangs down with the cord guides 12 and 13 as a reference.

In the stationary state in which the lower beam 5 is located at the lower limit position, or in the stationary state in which the lower beam 5 is located at the intermediate position or the upper limit position and the curtain fabric 4 is wound on the winding tube 9 with a prescribed winding diameter, the double curtain fabrics 4 are in each other. The distance between the double curtain fabrics 4 at the position close to or close to each other (the distance d1 between the double curtain fabrics 4 ) is constant.

Next, referring to FIG. 19( b ), when the lower beam 5 is lifted by operating the operation rope 3 from the state where the lower beam 5 is located at the lower limit position or the intermediate position, for example, the screen cloth 4 is wound around the winding tube 9 on. At this time, the operation cord 3 abuts against the cord guide portion 12 on the indoor side to apply a clockwise torque to the operation unit 60, thereby driving the operation unit 60 to perform a pendulum motion. The side end portion rotates the movable vane 40 to push the screen 4 on the outside of the chamber. Therefore, the interval d2 at the time of operation of the double-ply fabric 4 is larger than the interval d1 at the time of rest.

Similarly, referring to FIG. 19( c ), when the lower beam 5 is lowered by operating the operation rope 3 from the state where the lower beam 5 is located at the intermediate position or the upper limit position, for example, the wire wound around the winding tube 9 The cord 4 is lowered. At this time, the operation cord 3 abuts against the cord guide portion 13 on the indoor side and applies a clockwise torque to the operation unit 60, thereby driving the operation unit 60 to perform a pendulum motion. The side end portion rotates the movable vane 40 to push the screen 4 on the outside of the chamber. Therefore, the interval d3 at the time of operation of the double-layer screen 4 is larger than the interval d1 at the time of rest.

Therefore, in the example shown in FIG. 19 , during the lifting operation, the operation unit 60 is rotated by the pulling force of the operation cord 3, so that the double-layer curtains 4 are moved relative to each other in a state of being separated from each other without friction (or , even if friction occurs, the friction is reduced), so there is no possibility (or reduced possibility) of damaging the cord 4 . In addition, in the stationary state, the operation cord 3 loses tension, and the operation unit 60 rotates in the direction of approaching the double curtain 4 under the action of the own weight of the curtain 4 and the like. Therefore, the distance between the double curtain 4 can be narrowed, or the double curtain 4 can be reduced. The double curtain fabrics 4 are in close contact with each other, so that the light-shielding property can be improved when the light-transmitting portion 4b and the light-shielding portion 4a of the curtain fabric 4 are completely overlapped to form a light-shielding state.

[Sixth Embodiment]

Next, the configuration of the roller blind 1 according to the sixth embodiment of the present invention will be described with reference to FIGS. 20 and 21 . In the sixth embodiment, as in the fifth embodiment, one side of the screen cloth 4 is attached to the winding tube 9 and the other side is attached to the fixing portion 2c provided on the outdoor side end surface of the mounting frame 2 superior. 20 is a front view showing a schematic configuration of the roller blind 1 according to the sixth embodiment of the present invention, and FIG. 21 is an exploded perspective view showing a schematic configuration around the operation unit 60 in the roller blind 1 according to the sixth embodiment of the present invention. In addition, the same reference numerals are assigned to the same components as those of the above-described respective embodiments.

Compared with the fifth embodiment, the sixth embodiment is different in that a support plate 8 is provided at the left end of the winding tube 9 , and no movable flap is provided on the mounting frame 2 , and the operation unit 60 is provided with a support plate 8 . A fixed rod 50 is fixed between the support plate 8 and the support plate 8 .

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

As in the fifth embodiment, the right end portion of the winding tube 9 is provided with an operation unit 60 that is rotatable with respect to the winding tube 9 and the support members 2a and 2b. In addition, the operation unit 60 accommodates the operation pulley 10, and the loop-shaped operation rope 3 is hung around the operation pulley 10 and hangs down therefrom. And the roller blind 1 is comprised so that the rotation operation of the winding tube 9 can be performed by the operation of the operation cord 3. As shown in FIG.

As in the fifth embodiment, one side of the curtain fabric 4 is attached to the winding tube 9, and the curtain fabric 4 is suspended and supported on the winding tube 9 in a windable manner, and the curtain fabric 4 hangs down from the winding tube 9 and passes through The other side folded back of the lower beam 5 functioning as a counterweight member is attached to a fixing portion provided on the outdoor side end surface of the mounting frame 2 . In addition, rollers 15 are inserted through the lower end portions of the screen cloth 4 hanging from the winding tube 9 and the fixing portion, and the rollers 15 are rotatably supported at both end portions of the lower beam 5 . Thereby, the screen cloth 4 is arranged to be tensioned by the weight of the lower beam 5 .

Therefore, when the operation cord 3 is operated to rotate the winding tube 9 in the carcass winding direction, the lower beam 5 rises, and when the winding tube 9 is rotated in the carcass unwinding direction, the lower beam 5 descends.

In addition, a barrel for reducing the operating force when winding up the screen cloth 4 is housed at the left end position inside the winding tube 9, and a braking device or the like for preventing the screen cloth 4 from falling due to its own weight is housed at the right end position (not shown). icon).

The curtain 4 is alternately formed with light-transmitting parts 4b that allow part of the light to pass through and light-shielding parts 4a that block the light in stripes, and the curtain 4 is suspended and supported in a double-layered state. Therefore, by the operation of the operating rope 3 By relatively moving the front and rear curtain fabrics 4 in the up-down direction, the overlapping degree of the light-transmitting portion 4b and the light-shielding portion 4a can be adjusted, so that the amount of lighting can be adjusted.

Next, the specific configuration of the operation unit 60 and its surroundings will be described with reference to FIG. 21 . 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 panel member 6a.

The protruding piece 61 of the operation panel member 6a is formed to extend toward the outside of the room in a substantially "フ" shape, and one end of the fixing rod 50 is attached to the front end of the protruding piece 61 of the operation panel member 6a. The support plate 8 provided between the winding tube 9 and the support member 2b has a protruding piece having substantially the same shape as the operation panel member 6a, and the other end of the fixing rod 50 is attached to the protruding piece of the support plate 8 (see Figure 20).

Since the screen cloth 4 hangs down from the fixing portion provided on the outdoor side end surface of the mounting frame 2 , the relative rotation of the operation unit 60 is placed behind the protruding piece 61 of the operation panel member 6 a and substantially parallel to the winding tube 9 . The extended fixing rod 50 is displaced, so that the curtain 4 on the outdoor side is pushed by the fixing rod 50 to move further toward the outdoor side.

Therefore, also in the sixth embodiment, the same functions and effects as those in the fifth embodiment can be produced, and the operation unit 60 is configured as a double-layered fabric capable of relatively moving when the operation cord 3 is operated. 4. The pendulum motion is performed in a way that the interval increases. And the operation means 60 is comprised so that the space|interval at the time of operation of the double screen 4 becomes larger than the space|interval at the time of stationary.

In particular, in the examples of the fifth and sixth embodiments, as compared with the examples of the first to fourth embodiments, it is not necessary to provide the support shaft 7 under the winding tube 9, so that the front-rear direction of the roller blind 1 can be avoided. width increases. In addition, in the examples of the first to fourth embodiments, the support shaft 7 is provided on the operation panel 6 which performs the pendulum motion, and the operation panel 6 is relatively rotated, so that the rotation angle of the operation panel 6 follows the pendulum motion. However, in the examples of the fifth and sixth embodiments, the pendulum motion of the operation unit 60 is made so that the interval during operation of the double screen 4 is larger than the interval at rest, and, The rotation angle of the operation unit 60 does not increase.

More specifically, in the examples of the fifth and sixth embodiments, the pendulum movement of the auxiliary operation unit 60 causes the double-layered fabric 4 to be adjusted by providing the fabric interval adjusting members such as the movable flap 40, the fixed lever 50, and the like. The interval at the time of operation is larger than the interval at the time of rest, so that the width in the front-rear direction of the roller blind 1 provided with the pendulum-moving operation unit 60 can be further reduced.

[Seventh Embodiment]

Next, the configuration of the roller blind 1 according to the seventh embodiment of the present invention will be described with reference to FIGS. 22 to 24 . The components of the roller blind 1 of the seventh embodiment are substantially the same as those of the roller blind 1 of the fifth embodiment. Also, the shapes of the operation rope 3 composed of the ball chain and the operation pulley 10 are different from those of the fifth embodiment.

22 is a front view showing a schematic configuration of a roller blind according to a seventh embodiment of the present invention. FIG. 23 is an exploded perspective view showing a schematic configuration around the operation unit 60 in the roller blind 1 according to the seventh embodiment of the present invention. In addition, (a), (b), (c) in FIG. 24 is a figure explaining the operation|movement of the operation unit 60 in the roller blind 1 concerning 7th Embodiment of this invention. In addition, the same reference numerals are assigned to the same components as those of the fifth embodiment.

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

An operation unit 60 rotatable relative to the winding tube 9 and the support members 2a, 2b is provided at the right end of the winding tube 9. In addition, the operation unit 60 accommodates the operation pulley 10, and the loop-shaped operation rope 3 is hung around the operation pulley 10 and hangs down therefrom. And the roller blind 1 is comprised so that the rotation operation of the winding tube 9 can be performed by the operation of the operation cord 3. As shown in FIG. The operation rope 3 is composed of an endless bead chain consisting of a ball portion 3a and a chain portion 3b connected at a predetermined pitch, and the surface of the operation pulley 10 is configured to have irregularities corresponding to the shape of the ball portion 3a.

One side of the curtain fabric 4 is mounted on the winding tube 9, and the curtain fabric 4 is suspended and supported on the winding tube 9 in a rollable manner. The other side where the beam 5 is folded back is attached to a fixing portion 2 c provided on the outdoor side end surface of the mounting frame 2 located at the upper portion of the winding tube 9 . As shown in FIG. 24 , the fixing portion 2c according to the present embodiment is configured such that the material holding plate 80 can be detachably engaged with the fixing portion 2c, and the material holding plate 80 can be wound around the end portion of the screen cloth 4. As shown in FIG. , so that the length of the curtain fabric 4 can be adjusted. Further, rollers 15 are inserted through the lower end portions of the screen cloth 4 hanging down from between the winding tube 9 and the fixing portion 2 c , and the rollers 15 are rotatably supported at both end portions of the lower beam 5 . Thereby, the screen cloth 4 is arranged to be tensioned by the weight of the lower beam 5 .

Therefore, when the operation cord 3 is operated to rotate the winding tube 9 in the carcass winding direction, the lower beam 5 rises, and when the winding tube 9 is rotated in the carcass unwinding direction, the lower beam 5 descends.

In addition, a barrel for reducing the operating force when winding up the screen cloth 4 is housed at the left end position inside the winding tube 9, and a braking device or the like for preventing the screen cloth 4 from falling due to its own weight is housed at the right end position (not shown). icon).

The curtain 4 is alternately formed with light-transmitting parts 4b that allow part of the light to pass through and light-shielding parts 4a that block the light in stripes, and the curtain 4 is suspended and supported in a double-layered state. Therefore, by the operation of the operating rope 3 By relatively moving the front and rear curtain fabrics 4 in the up-down direction, the overlapping degree of the light-transmitting portion 4b and the light-shielding portion 4a can be adjusted, so that the amount of lighting can be adjusted.

Next, the specific configuration of the operation unit 60 and its surroundings will be described with reference to FIGS. 22 and 23 . The operation unit 60 is composed of two operation panel members 6a and 6b which are integrally formed so as to be able to sandwich and accommodate the operation pulley 10 and the rope cover 20 inside. The operation unit 60 is provided with the cord guides 12 and 13 .

The cord guide 12 of the present embodiment will be described in detail as follows. The operation panel member 6b, which has a substantially V-shaped overall shape, is provided with side pieces at the front-rear direction ends, respectively. The side pieces extend from the front-rear direction of the operation panel member 6b. The end portion protrudes toward the side opposite to the operation panel member 6a in the axial direction of the fixed shaft 11, and an engaging piece 12a is formed on a part of the side piece. Side pieces 12c are also provided at the front-rear direction ends of the operation panel member 6a, respectively, and the side pieces 12c extend from the front-rear direction ends of the operation panel member 6a toward the opposite side to the operation panel member 6b in the axial direction of the fixed shaft 11, respectively. The side piece 12c protrudes and can be engaged with the engaging piece 12a of the operation panel member 6b. The side piece 12c of the operation panel member 6a is provided with a fitting convex portion 12d, and the engaging piece 12a of the operation panel member 6b is provided with a fitting receiving portion 12b that can be fitted into the fitting convex portion 12d. Therefore, when the operation panel members 6a and 6b are integrally formed so that the operation pulley 10 and the rope cover 20 can be sandwiched and accommodated inside, the side piece 12c of the operation panel member 6a and the engagement piece 12a of the operation panel member 6b are formed integrally. By engaging, the fitting convex portion 12d is fitted with the fitting receiving portion 12b, and the side piece protruding from the operation panel member 6b and the side piece 12c protruding from the operation panel member 6a are integrated, thereby constituting the cord of the present embodiment. Guide part 12 .

In addition, the wire guide portion 13 of the present embodiment will be described in detail as follows. In order to constitute the wire guide portion 13, a shaft along the fixed shaft 11 is formed upright on the lower surface of the central portion in the front-rear direction of the operation panel member 6b. Longitudinal protrusions protruding toward the side opposite to the operation panel member 6a. The surface 13a (the surface facing the operation panel member 6a) of the elongated protruding portion can abut and engage with the engaging groove 13b provided on the lower surface of the center portion in the front-rear direction of the operation panel member 6a. . Therefore, when the operation panel members 6a and 6b are integrally formed so that the operation pulley 10 and the rope cover 20 can be sandwiched and accommodated inside, the surface 13a of the elongated protrusion on the operation panel member 6b and the operation panel member The engagement groove 13b on 6a is engaged, and the rope guide part 13 of this embodiment is comprised. In addition, a screw hole 13c is formed in the engaging groove 13b of the operation panel member 6a, and the same screw hole (not shown) as the screw hole 13c is also formed on the surface 13a of the elongated protrusion of the operation panel member 6b. . Furthermore, the operation unit 60 can be configured by integrally fixing the operation panel members 6a and 6b through the screw holes with the attachment screws 70 . In addition, instead of fixing the lower end portions of the operation panel members 6a and 6b with the attachment screws 70, the lower end portions of the operation panel members 6a and 6b may be fitted together. Alternatively, by optimizing the shape of the fitting convex portion 12d and the fitting receiving portion 12b or increasing the number thereof, the integration of the operation panel members 6a and 6b may be stabilized.

The loop-shaped operation rope 3 hung around the operation pulley 10 hangs downward under the guidance of the rope guides 12 and 13 . In particular, two rope guide parts 12 in the seventh embodiment are provided on the front and rear sides of the rope guide part 13 so as to substantially sandwich the rope guide part 13, and the rope guide part 12 and the rope guide part 13 on the front side are provided. A guide path slightly larger than the outer shape of the ball portion 3 a of the operation rope 3 is formed between the two and between the rope guide portion 12 and the rope guide portion 13 on the rear side, and a loop of the operation rope 3 that hangs down from the operation pulley 10 is formed. The side (front side) is guided to pass between the rope guide portion 12 (front side) and the rope guide portion 13 and hangs down, and the other side (rear side) of the looped operation rope 3 hanging down from the operation pulley 10 is guided And it passes between the cord guide part 12 (rear side) and the cord guide part 13, and hangs down (refer FIG. 24).

In addition, guide paths slightly larger than the outer shape of the ball portion 3 a of the operation cord 3 between the cord guide portion 12 on the front side and the cord guide portion 13 and between the cord guide portion 12 and the cord guide portion 13 on the rear side are It is formed so that at least two spherical parts 3a connected at a predetermined pitch are always in contact with either one of the rope guide parts 12 and 13. With such a configuration, it is possible to suppress rattling in the operation unit 60 when the operation cord 3 is operated, and to reduce the operation sound due to the interference between the ball portion 3 a and the cord guide portions 12 and 13 .

As shown in FIG. 23 , the rope cover 20 mainly includes a flange-shaped main body having a cylindrical portion having an insertion hole 20d as a base shaft, and an upper protruding piece protruding from the upper edge of the main body in the axial direction of the fixed shaft 11, And it is comprised so that the operation rope 3 which hangs around the operation pulley 10 may be prevented from falling off, and the rope cover 20 is fixed so that it cannot rotate with respect to the support member 2a. In this example, the fixed shaft 11 is formed in the shape of a square bar, and the rope cover 20 can be fixed so as not to rotate relative to the support member 2a by inserting the fixed shaft 11 into the insertion hole 20d and engaging with the insertion hole 20d. However, the rope cover 20 may be in any form as long as it is provided so as to prevent the operation rope 3 hanging around the operation pulley 10 from slipping off the operation pulley 10 .

The operation pulley 10 is provided with a through hole, and a fixed shaft 11 extending from the support member 2a is used as a rotation shaft. In addition, a protruding portion (not shown) protruding in a cylindrical shape is formed on the right end side of the operation pulley 10, and the protruding portion is engaged with the engaging groove 20c provided around the insertion hole 20d of the rope cover 20. Thereby, the operation pulley 10 is supported so as not to rotate relative to the rope cover 20 and the support member 2a. On the left end side of the operation pulley 10 , a fitting portion 25 to be fitted to the inner peripheral surface of the right end of the winding tube 9 is provided via a flange having a larger diameter than the outer peripheral portion of the hooking operation rope 3 . Therefore, the winding tube 9 is supported so as to be rotatable with the rotation of the operation pulley 10 . In addition, the left end portion of the operation pulley 10 meshes with a gear mechanism (not shown) connected to the braking device accommodated in the winding tube 9 . When the acceleration or deceleration is not required, the gear mechanism may be omitted, and the winding tube 9 may be directly connected to the operation pulley 10 .

On the other hand, a protruding portion (not shown) protruding in a cylindrical shape is formed on the right end side of the cord cover 20, and the operation panel member 6a is provided with a circular hole-shaped rotation receiving portion having a diameter larger than the outer diameter of the protruding portion. part 23a to engage with the protruding part. Further, the operation panel member 6b is provided with a rotation receiving portion 23b having a diameter larger than the outer diameter of the winding tube 9 and having a semicircular hole shape. In addition, a concave portion 20a is provided on the 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 panel member 6a. The protruding piece 61 of this example has a thickness approximately equal to the width in the left-right direction of the operation unit 60 , and the bottom surface of the protruding piece 61 is supported along the top surface of the rope cover 20 , whereby the operation unit 60 is wound with respect to the operation pulley 10 and the operation unit 60 . The relative rotation of the tube 9 is stable. Therefore, the operation unit 60 is supported so as to be rotatable with respect to the operation pulley 10 and the winding tube 9 .

Then, in a state in which the two operation panel members 6a and 6b are integrally formed so that the operation pulley 10 and the rope cover 20 can be sandwiched and accommodated inside, the protruding piece 61 is engaged with the projecting piece 61 so as to rotate within a predetermined range. in the recess 20a. In addition, on the inner wall of the upper protruding piece on the left end side of the cord cover 20 capable of accommodating the operation panel member 6b inside, there is provided a stepped portion 20b for restricting the relative rotation of the operation unit 60 within a certain angle. That is, when the operation unit 60 is relatively rotated, the stepped portion 20b can abut against the edge portions 26 on both sides of the upper end of the cord guide portion 12 of the operation panel member 6b. Therefore, the relative rotation of the operation unit 60 is restricted within a certain angle by the abutment between the edge portion 26 and the stepped portion 20b.

On the other hand, a substantially fin-shaped movable fin 40 is suspended from the outdoor side end portion of the bottom surface of the mounting frame 2 whose both ends are fixed to the support members 2 a and 2 b, and the movable fin 40 can surround the base of the mounting frame 2 . The shaft rotates.

The movable vane 40 of the seventh embodiment has a length longer than that of the fifth embodiment so as to close the gap between the mounting frame 2 and the winding tube 9, and a part of the inner side thereof is cut away , thereby reducing weight while maintaining strength. The movable vane 40 having the above-mentioned length can further shield the external light incident from the gap between the mounting frame 2 and the winding tube 9, and, due to its weight reduction, the movable vane can be reduced in size during the pendulum motion. The load generated by the displacement of the sheet 40 . Furthermore, since the screen cloth 4 hangs down from the fixing portion 2c provided on the outdoor side end surface of the mounting frame 2, when the operation unit 60 is relatively rotated, the side end portion of the protruding piece 61 of the operation panel member 6a is pressed against the adjustable portion 2c. When the vane 40 is moved, the movable vane 40 is rotated, and the screen cloth 4 on the outdoor side is further moved toward the outdoor side.

The operation unit 60 thus configured is configured to perform a pendulum motion so as to increase the interval between the two-layer curtains 4 that are relatively movable when the operation cord 3 is operated. And the operation means 60 is comprised so that the space|interval at the time of operation of the double screen 4 becomes larger than the space|interval at the time of stationary.

Hereinafter, the operation of the operation unit 60 will be described in more detail with reference to FIG. 24 . First, referring to FIG. 24( a ), the operation unit 60 is supported so as to be rotatable relative to the operation pulley 10 (and the winding tube 9 ) when the lower beam 5 is in a stationary state at the lower limit position, the intermediate position and the upper limit position, respectively , a torque in a direction in which the front and rear curtains 4 are brought into contact with each other is applied to the operation unit 60 by its own weight (weight of the curtain 4, the lower beam 5, etc.). Thereby, the operation cord 3 hangs down with the cord guides 12 and 13 as a reference.

In the stationary state in which the lower beam 5 is located at the lower limit position, or in the stationary state in which the lower beam 5 is located at the intermediate position or the upper limit position and the curtain fabric 4 is wound on the winding tube 9 with a prescribed winding diameter, the double curtain fabrics 4 are in each other. The distance between the double curtain fabrics 4 at the position close to or close to each other (the distance d1 between the double curtain fabrics 4 ) is constant. Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layered curtain 4 can be shifted to form a semi-light-transmitting state, or the light-transmitting portion 4b and the light-shielding portion 4a of the curtain 4 can be completely overlapped to form a light-shielding state. Light-shielding properties in a light-shielded state. In particular, the fixing portion 2c of the mounting frame 2 of the present embodiment is configured such that the material holding plate 80 is detachably locked in the fixing portion 2c, and the material holding plate 80 can be wound around the end of the screen cloth 4, Thereby, the length of the screen cloth 4 can be adjusted, and therefore, the length of the screen cloth 4 can be easily adjusted so that, for example, when the lower beam 5 is located at the lower limit position, the screened state is obtained. In addition, the movable fin 40 having a long length can further shield external light incident from the gap between the mounting frame 2 and the winding tube 9 .

Next, referring to FIG. 24( b ), when the lower beam 5 is lifted by operating the operation rope 3 from a state where, for example, the lower beam 5 is located at the lower limit position or the intermediate position, the screen cloth 4 is wound around the winding tube. 9 on. At this time, the operation cord 3 abuts against the cord guide portion 12 on the indoor side to apply a clockwise torque to the operation unit 60, thereby driving the operation unit 60 to perform a pendulum motion. The side end portion rotates the movable vane 40 to push the screen 4 on the outside of the chamber. Therefore, the interval d2 at the time of operation of the double-ply fabric 4 is larger than the interval d1 at the time of rest. Therefore, during the lifting operation, the double-layer cord fabrics 4 move relatively without friction, or only generate friction in part of the lifting process, or the friction force is weakened, so there is no possibility of damaging the cord fabrics 4 . In addition, guide paths slightly larger than the outer shape of the ball portion 3 a of the operation cord 3 between the cord guide portion 12 on the front side and the cord guide portion 13 and between the cord guide portion 12 and the cord guide portion 13 on the rear side are Since at least two ball portions 3a connected at a predetermined pitch are formed so as to always abut on either of the cord guide portions 12 and 13, it is possible to suppress the rattling of the manipulation cord 3 in the operation unit 60 when the manipulation cord 3 is operated, and to reduce the Operation sound due to interference between the ball portion 3a and the rope guide portions 12, 13.

Similarly, referring to FIG. 24( c ), when the lower beam 5 is lowered by operating the operation rope 3 from the state where the lower beam 5 is located at the intermediate position or the upper limit position, for example, the wire wound around the winding tube 9 The cord 4 is lowered. At this time, the operation cord 3 abuts against the cord guide portion 13 on the indoor side and applies a clockwise torque to the operation unit 60, thereby driving the operation unit 60 to perform a pendulum motion. The side end portion rotates the movable vane 40 to push the screen 4 on the outside of the chamber. Therefore, the interval d3 at the time of operation of the double-layer screen 4 is larger than the interval d1 at the time of rest. Therefore, during the lowering operation, the double-layer cord fabrics 4 move relatively without friction, or only generate friction in part of the lifting process, or the friction force is weakened, so there is no possibility of damaging the cord fabrics 4 . In addition, even when friction occurs locally when the material winding thickness of the cord fabric 4 is close to the upper limit, the friction force tends to be weakened.

Therefore, in the roller blind 1 of the seventh embodiment, during the raising and lowering operation, the operation unit 60 is rotated by the pulling force of the operation cord 3, so that the double-layered screen cloths 4 are relatively moved in a state of being separated from each other without friction. (Or, even if friction occurs, the friction is reduced), so there is no possibility (or a reduced possibility) of damaging the cord 4 . In addition, in the stationary state, the operation cord 3 loses tension, and the operation unit 60 rotates in the direction of approaching the double curtain 4 under the action of the own weight of the curtain 4 and the like. Therefore, the distance between the double curtain 4 can be narrowed, or the double curtain 4 can be reduced. The double curtain fabrics 4 are in close contact with each other, so that the light-shielding property can be improved when the light-transmitting portion 4b and the light-shielding portion 4a of the curtain fabric 4 are completely overlapped to form a light-shielding state.

In addition, in the roller blind 1 of the seventh embodiment, the fixing portion 2c of the mounting frame 2 is configured such that the material holding plate 80 capable of adjusting the length of the screen cloth 4 by winding is detachably locked to the fixing portion. In the part 2c, therefore, it is easy to adjust the length of the screen cloth 4 so that, for example, when the lower beam 5 is located at the lower limit position, it becomes a shielded state.

In addition, in the roller blind 1 of the seventh embodiment, the movable vanes 40 are configured to have a length sufficient to close the gap between the mounting frame 2 and the winding tube 9, so that the distance between the mounting frame 2 and the roll can be further shielded. External light entering around the gap between the tubes 9 .

In addition, in the roller blind 1 of the seventh embodiment, between the cord guide portion 12 and the cord guide portion 13 on the front side, and between the cord guide portion 12 and the cord guide portion 13 on the rear side, the cord guides 12 and 13 are connected at predetermined intervals. At least two ball portions 3a are always abutted against and guided by any one of the rope guide portions 12 and 13. Therefore, it is possible to suppress rattling of the operation rope 3 in the operation unit 60 when the operation rope 3 is operated. Operation sound due to interference between the rope guides 12 and 13 .

As mentioned above, although an example of a specific embodiment was given and this invention was demonstrated, this invention is not limited to the example of the said embodiment, Various deformation|transformation is possible in the range which does not deviate from the technical idea. For example, in each embodiment, the state where the indoor side and the outdoor side are determined is described, but the indoor side and the outdoor side may be provided in reverse.

In addition, in order to reliably separate the screen cloth 4 during operation, an urging member such as a spring that assists the pendulum motion moving in the direction in which the screen cloth 4 is separated may be further provided.

(industrial availability)

According to the roller blind 1 according to the present invention, during the lifting operation, the double curtain fabrics 4 move relatively without friction, or only generate friction in part of the lifting process, or the friction force is weakened, so there is no damage to the curtain fabrics 4. In the static state, the interval between the double curtains 4 can be reduced, or the double curtains 4 can be made close to each other. Since the light part 4b and the light shielding part 4a are completely overlapped to form a light shielding property in a light shielding state, they can be effectively used in applications such as blinds using a double curtain.

Claims (14)

1. A roller blind capable of relatively moving a double curtain fabric in an up-down direction, wherein the roller blind is characterized in that: The roller blind is provided with an operation mechanism that always increases the interval between the double-layered fabrics configured to be relatively movable when the lifting operation and the lowering operation of the double-layered fabric are performed, and when the double-layered fabric is stopped. During the ascending operation and the descending operation, the pendulum motion is always performed in such a manner that the double-layered curtains are closer to or close to each other than when the interval is increased. 2. The roller blind of claim 1, wherein The operating mechanism performs pendulum motion so that the interval at the time of operation of the double-layered fabric is larger than the interval at the time of rest. 3. roller blind as claimed in claim 1 or 2, is characterized in that, The double-layer curtain fabric is alternately formed with a light-transmitting part for allowing part of the light to pass through and a light-shielding part for shielding the light. 4. roller blind as claimed in claim 1 or 2, is characterized in that, The double-layer cord fabric is formed by folding back a piece of cord fabric, The roller blind is provided with a winding tube and a support shaft, one side of the curtain fabric is mounted on the winding tube, and the curtain fabric is suspended and supported on the winding tube in a rollable manner. , the other side that hangs down from the winding tube and is folded back through the counterweight member is installed and supported on the support shaft, The operation mechanism performs a pendulum motion so that the positional relationship between the winding tube and the support shaft is changed between the positional relationship at rest and the positional relationship at the time of operation. 5. The roller blind of claim 4, wherein The operating mechanism is configured to have a force point, The force-receiving point is engaged with the operation cord that operates the opening and closing of the double-layered curtain, and the force-receiving point is energized by the pulling force of the operation cord during operation, so that the operating mechanism and the The support shafts rotate together toward the direction in which the double-layer cords are separated. 6 . The roller blind of claim 5 , wherein the support shaft is provided below the winding tube and at a position close to the indoor side. 7 . 7. The roller blind of claim 1 or 2, characterized in that, The double-layer cord fabric is formed by folding back a piece of cord fabric, The roller blind is provided with a winding tube and a fixing member, one side of the curtain fabric is attached to the winding tube, and the curtain fabric is suspended and supported on the winding tube in a rollable manner, and the curtain fabric is suspended and supported on the winding tube. , the other side that hangs down from the winding tube and is folded back through the counterweight member is mounted and supported at a position above the winding tube by the fixing member, The operating mechanism includes an operating unit that is always in a pendulum motion when operated by an operating cord, and a material interval adjusting member that moves the two fabrics in accordance with the pendulum movement of the operating unit. The interval between the ply cords is increased, and when no operation is performed, the two-ply cords are always moved closer to or in close contact with each other than when the interval is increased relative to the other side of the cords. 8. The roller blind of claim 7, wherein The fabric interval adjusting member includes a movable flap that presses the screen fabric so as to increase the gap between the double screen fabrics in accordance with the pendulum movement of the operation unit, and the The movable wing is rotatably suspended on the fixed part through its base shaft. 9. The roller blind of claim 8, wherein The movable flap has a length sufficient to close the gap between the fixed member and the winding tube. 10. The roller blind of claim 7, wherein The fabric interval adjusting member includes a fixing lever that pushes the screen cloth so as to increase the space between the double screen cloths in accordance with the pendulum movement of the operation unit, and the fixing lever is fixed to a part of the operating unit. 11. The roller blind of claim 7, wherein The operation unit is provided with a rotation restricting member that restricts the rotational range of the pendulum movement. 12. The roller blind of claim 11, wherein The operation unit has a rope guide that guides the hanging of the operation rope and supports the operation rope so as to cause the operation unit to perform a pendulum motion. 13. The roller blind of claim 12, wherein The operating mechanism has an operating rope composed of a bead chain connected by a plurality of ball parts, The rope guide portion is configured such that at least two of the ball portions connected at a predetermined pitch are always in contact with the rope guide portion to be guided. 14. The roller blind of claim 7, wherein The fixing member has a fabric pressing plate and a fixing portion, the fabric pressing plate can be wound around the end of the cord to adjust the length of the cord, and the fabric pressing plate is detachably locked in the fixing portion .

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