TWI717324B - Roller blind - Google Patents

Abstract

The roller blind provided by the present invention can make the double-layer curtain relatively move in the up and down direction; The roller blind (1) is equipped with an operating panel (6). When operating, the operating panel (6) performs a pendulum movement in such a way that the interval between the double-layer curtains (4) that is configured to be relatively movable is increased; Preferably, the operating panel (6) performs pendulum movement in such a way that the interval during the operation of the double-layer curtain (4) is greater than the interval at rest; more preferably, when the operation is stopped, the operating panel (6) is in the The pendulum movement is performed by the weight of the double-layer curtain (4) in such a way that the double-layer curtain is tightly attached. The double-layer curtain (4) is alternately formed with light-transmitting parts (4b) that allow partial light to pass through and shielding light The shading part (4a).

Description

Roller blind

The present invention relates to a roll screen capable of relatively moving a double-layer curtain in the vertical direction.

In the prior art, there is a roller blind that makes the double-layer overlapped curtains relatively move in the up and down direction, thereby adjusting the amount of indoor lighting.

The curtain fabric of the roller blind is alternately formed with light-transmitting parts that allow part of the light to pass through and light-shielding parts that block the light in stripes, and the curtain is suspended in a double-layered state. In addition, the front and rear curtains can be relatively moved in the vertical direction through the operation of the operating mechanism, thereby adjusting the degree of overlap between the light-transmitting portion and the light-shielding portion, thereby adjusting the amount of lighting.

For example, the following structure is disclosed, namely: in order to easily adjust the length of the curtain, one end of the curtain is fixed to the winding rod, and the other end of the curtain hanging from the winding rod and folded back by the weight member is fixed to the fixed When the member is on, the other end of the curtain is housed in the fixing member so that the length of the curtain can be adjusted (for example, refer to Patent Document 1). In this configuration, there are gaps between the double-layer curtains, and they are not in close contact with each other.

On the other hand, there is disclosed a structure that can smoothly raise or lower the curtain while maintaining the double-layer curtain in a tightly attached state (for example, refer to Patent Document 2).

[Prior Technical Literature]

[Patent Literature]

Patent Document 1: Japanese Patent, JP 2009-79430 A

Patent Document 2: Japanese Patent, Patent No. 3311994 Specification

In the technique disclosed in Patent Document 1, since there is a gap between the double-layer curtains, the double-layer curtains move relative to each other without friction during the lifting operation. Therefore, it is effective in preventing damage to the curtains. However, this technique has a problem in that even if the light-transmitting part and the light-shielding part of the screen are completely overlapped to form a light-shielding state, light will leak from the gap between the screens and the light cannot be completely blocked.

On the other hand, in the technique disclosed in Patent Document 2, since the double-layer curtain is maintained in a close contact state, it prevents light leakage from the gap of the curtain when the light-transmitting part and the light-shielding part of the curtain are completely overlapped to form a light-shielding state. Effective at one point. However, this technology has the following problem, that is, during the lifting operation, since the double-layer curtains move relatively in a tight state, the curtains may be damaged.

The present invention has been completed in view of the above-mentioned problems, and its object is to provide a roller blind in which a relatively movable double-layer curtain can be relatively moved in the vertical direction.

The roller blind of the present invention is capable of relatively moving the double-layer curtain in the up-and-down direction, and is characterized by having an operating mechanism for operating the double-layer curtain to relatively move in the up-and-down direction, and the operating mechanism is provided with When the double-layer curtain is relatively movable in the vertical direction, an operating unit that always performs a pendulum movement, and with the pendulum movement of the operating unit, the interval between the double-layer curtains configured to be relatively movable is increased. When the operation of the pendulum movement of the operating unit is not performed, the double-layer curtain is always closer to or close to each other than the double-layer curtain increased during the operation. .

In addition, the roller blind of the present invention is characterized in that the operating mechanism performs a pendulum movement in such a manner that the interval during operation of the double-layer curtain is greater than the interval during stationary.

In addition, the roller blind of the present invention is characterized in that when the operation is stopped, the operating mechanism performs a pendulum movement in a manner that the double-layer curtain is tightly attached under the action of the dead weight of the double-layer curtain.

In addition, the roller blind of the present invention is characterized in that the double-layer curtain is alternately formed with light-transmitting parts that allow partial light to pass through and light-shielding parts that block light.

In addition, the roller blind of the present invention is characterized in that: the double-layer curtain is formed by folding a piece of curtain back; the roller blind is provided with a winding tube and a supporting shaft, and one side of the curtain is installed on the winding tube, And the curtain cloth is suspended and supported on the winding tube in a manner capable of winding, and the other side of the curtain cloth hanging down from the winding tube and folded back through the counterweight is installed and supported on the support shaft The operating mechanism performs a pendulum movement in a manner 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.

In addition, the roller blind of the present invention is characterized in that the operating mechanism is configured to have a force point, which is engaged with an operating cord that operates the opening and closing action of the double-layer curtain, and is operated through the operation during operation. The pulling force of the rope applies a force to the force point, so that the operating mechanism and the supporting shaft rotate together in the direction in which the double-layer curtain is separated.

In addition, the roller blind of the present invention is characterized in that the support shaft is arranged below the winding tube and close to the indoor side.

In addition, the roller blind of the present invention is characterized in that the double-layer curtain is formed by folding back a single curtain; the roller blind is provided with a winding tube and a fixing member (in the example of the embodiment described later, it is a mounting frame). One side of the cord is installed on the winding tube, and the cord is suspended and supported on the winding tube in a manner capable of winding, and the cord is suspended from the winding tube and folded back via a counterweight member The other side is installed and supported at a position above the winding tube through the fixing member; the operating mechanism is provided with the operating unit and the fabric interval adjustment member (in the example of the embodiment described later, it may be Moving flap or fixed rod), the operating unit is configured to always make a pendulum movement when the operation is performed through an operating rope, and the fabric interval adjusting member follows the movement of the pendulum to make the interval between the double curtains Increase, and always make the interval between the double-layer curtains closer to or close to each other than the interval between the double-layer curtains increased during the operation when the operation is not performed, relative to the Act on the other side of the curtain.

In addition, the roller blind of the present invention is characterized in that the fabric interval adjusting member is provided with movable fins, and the movable fins increase the interval between the double-layer curtains in accordance with the pendulum movement of the operating unit The curtain fabric is pressed, and the movable fin is rotatably suspended on the fixed member through its base shaft.

In addition, the roller blind of the present invention is characterized in that the movable fin 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 fabric interval adjusting member is provided with a fixing rod that pushes the double-layer curtain in a manner that increases the interval between the double-layer curtains as the pendulum of the operating unit moves The curtain, and the fixing rod is fixed to a part of the operation unit.

In addition, the roller blind of the present invention is characterized in that the operating 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 rope guide portion that guides the hanging of the operation rope and supports the operation rope in a pendulum motion.

In addition, the roller blind of the present invention is characterized in that the operating mechanism has an operating rope constituted by a bead chain formed by connecting a plurality of ball parts; and the rope guide part is constituted as: at least two connected at a predetermined distance The ball part always abuts and is guided by the rope guide part.

In addition, the roller blind of the present invention is characterized in that: the fixing member has a fabric pressing plate and a fixing portion, the fabric pressing plate can wind the end of the curtain to adjust the length of the curtain, and the fabric pressing plate can be removed The installation method is locked in the fixing part.

According to the present invention, during the lifting operation, the double-layer curtains move relatively without friction, or friction occurs only during a part of the lifting process, or the friction is weakened, so there is no possibility of damaging the curtains.

In addition, when in a stationary state, the interval between the double-layer curtains can be reduced, or the double-layer curtains can be tightly attached to each other. Especially in a curtain with a light-transmitting part and a light-shielding part, the light-transmitting part and the light-shielding part can be completely overlapped The light-shielding property when formed into a light-shielding state.

1: Roller blind

2: Mounting frame

2a: Supporting parts

2b: Supporting parts

2c: fixed part

3: Operation rope

3a: Ball

3b: Chain

4: curtain

4a: Shading part of curtain

4b: Light transmitting part of the curtain

5: Lower beam

6: Operation panel

6a: Operating panel parts

6b: Operating panel parts

7: Support shaft

8: Support plate

9: Winding tube

10: Operation pulley

11: fixed shaft

12: Rope guide

12a: Clip

12b: Fitting receiving part

12c: side piece

13: Rope guide

13a: Surface of the elongated protrusion

13b: Snap slot

13c: threaded hole

14: Rope guide

15: roller

16: pivot

20: Rope cover

20a: recess

20b: Step

20c: snap slot

20d: Through hole

21: Keep parts

22: Hole

23: Rotation receiving part

23a: Rotation receiving part

23b: Rotation receiving part

24: Rotating support

25: Fitting part

26: Edge

27: Rotating shaft hole

31: drive gear

32: Transmission gear

33: driven gear

40: movable flap

50: fixed rod

60: operating unit

61: protruding piece

62: Rotation limit groove

63: Rotation limit shaft

70: mounting screws

80: Fabric press plate

d1~d3: interval

d1’: interval

D: interval

R: Roll diameter

R1~R2: Roll diameter

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

Fig. 2 is a side view showing the schematic structure of the roller blind of the first embodiment of the present invention.

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

(A), (b), (c) in FIG. 4 are diagrams illustrating the operation of the operation panel in the roller blind of the first embodiment of the present invention.

Fig. 5 is a front view showing the schematic structure of the roller blind of the second embodiment of the present invention.

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

(A), (b), (c) in FIG. 7 are diagrams illustrating the operation of the operation panel in the roller blind of the second embodiment of the present invention.

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

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

(A), (b), (c) in FIG. 10 are diagrams explaining the motion of the operating panel in the roller blind of the third embodiment of the present invention when it is stationary.

(A) and (b) in FIG. 11 are diagrams explaining the operation of the operation panel in the roller blind of the third embodiment of the present invention.

(A) and (b) in FIG. 12 are diagrams for explaining the operation panel in the roller blind of the third embodiment of the present invention in comparison with a comparative example.

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

(A), (b), (c) in FIG. 14 are diagrams illustrating the operation of the operation panel in the roller blind of the fourth embodiment of the present invention.

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

Fig. 16 is a side view showing the schematic configuration of the roll blind of the fifth embodiment of the present invention.

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

(A), (b), (c) in FIG. 18 are diagrams for explaining the operation of the operating unit in the roller blind of the fifth embodiment of the present invention.

(A), (b), (c) in FIG. 19 are diagrams explaining the operation of the operation unit of the modification of the roller blind of the fifth embodiment of the present invention.

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

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

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

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

(A), (b), (c) in FIG. 24 are diagrams illustrating the operation of the operating unit in the roller blind of the seventh embodiment of the present invention.

Hereinafter, a roll screen 1 of each embodiment of the present invention will be described with reference to the drawings. In addition, in the specification of this application, based on the hanging direction of the curtain cloth 4, the upper side of the figure and the lower side of the figure in the front view of the roller blind 1 shown in FIG. 1 and the like are respectively defined as "upper" (or "upper side"). ) And "below" (or "lower side"), the left side of the figure is defined as the "left side" of the roller blind 1, and the right side of the figure is defined as the "right side" of the roller blind 1. In addition, in the example described below, the side that can be seen in the front view of the roller blind 1 shown in FIG. 1 is referred to as the "front side" (or "indoor side"), and the opposite side is referred to as the "rear side". "Side" (or "outdoor side"), when referred to as the front and back direction of the roller blind 1, refers to the direction perpendicular to the surface shown in the front view of FIG. 1.

[First Embodiment]

First, the structure of the roller blind 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. Figure 1 is a front view showing the schematic structure of the roller blind 1 of the first embodiment of the present invention, and Figure 2 is a front view showing the first embodiment of the present invention A side view of the schematic configuration of the roller blind 1 of an embodiment. Fig. 3 is an exploded perspective view showing a schematic configuration around the operation panel 6 in the roller blind 1 of the first embodiment of the present invention. In addition, (a), (b), and (c) in FIG. 4 are diagrams illustrating the operation of the operation panel 6 in the roller blind 1 of the first embodiment of the present invention.

In the roller blind 1 shown in FIGS. 1 and 2, supporting members 2a, 2b are fixed at both ends of the mounting frame 2, and the fixed shaft 11 extending from the supporting members 2a, 2b is wound cylindrically The tube 9 is rotatably supported between the supporting members 2a and 2b.

An operating pulley 10 is provided at the right end of the winding tube 9, and the loop-shaped operating rope 3 is hung on the operating pulley 10 and hangs down therefrom. In addition, the roller blind 1 is configured such that the winding tube 9 can be rotated through the operation of the operating cord 3, and the surface of the operating pulley 10 on which the operating cord 3 is wound has a highly frictional surface shape. In addition, the operating cord 3 is composed of a ball chain, and the surface of the operating pulley 10 that is hung around the bead chain may be formed to have concavities and convexities corresponding to the ball portion of the bead chain.

Between the supporting member 2 a and the operating pulley 10, an operating plate 6 is provided so as to be rotatable with respect to the winding tube 9. One end of a cylindrical support shaft 7 extending between the support members 2a and 2b is attached to the lower part of the operation panel 6. In addition, the specific structure and operation of the operation panel 6 will be described in detail later.

In addition, between the supporting member 2b and the left end of the winding tube 9, a supporting plate 8 is provided so as to be rotatable relative to the winding tube 9, and the other end of the supporting shaft 7 is mounted on the lower part of the supporting plate 8. . The shape of the support plate 8 of this embodiment is substantially the same as the shape of the operation plate 6 except that the rope guides 12 and 13 described later are not provided. However, as long as it can be rotated relative to the winding tube 9 and the other end of the support shaft 7 can be attached, the outer shape of the support plate 8 may be formed in a shape different from the outer shape of the operation plate 6.

One side of the cord 4 is mounted on the winding tube 9, and the cord 4 is suspended and supported on the winding tube 9 in a windable manner. The cord 4 hangs down from the winding tube 9 and passes through a lower beam that functions as a counterweight member (bottom rail) 5 and the other side folded back is installed on the support shaft 7. Moreover, after the winding tube 9 and the support shaft A roller 15 is inserted into the lower end of the curtain 4 hanging down between 7 and the roller 15 is rotatably supported at both ends of the lower beam 5. Therefore, the cord 4 is set to be tensioned through the weight of the lower beam 5.

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

In addition, at the left end of the winding tube 9 is housed a spring motor that reduces the operating force when the cord 4 is rolled up, and at the right end is housed a braking device that prevents the cord 4 from falling due to its own weight. Etc. (not shown).

The curtain 4 is alternately formed with light-transmitting parts 4b for transmitting part of light and light-shielding parts 4a for shielding light in stripes, and the curtain 4 is suspended and supported in a double-layered state. Therefore, the operation of the operation rope 3 The front and rear curtains 4 are relatively moved in the vertical direction to adjust the degree of overlap between the light-transmitting portion 4b and the light-shielding portion 4a, and thereby 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 operating pulley 10 is provided with a through hole to use a fixed shaft 11 extending from the supporting member 2a as a rotating shaft, and through the fixed shaft 11, the winding tube 9 can be rotated together with the rotation of the operating pulley 10 Way to support it. For this purpose, a fitting portion 25 fitted to the inner peripheral surface of the right end of the winding tube 9 is provided on the left end side of the operating pulley 10. In addition, the left end of the operating pulley 10 meshes with a gear mechanism (not shown) connected to a braking device housed in the winding tube 9. If speed increase or reduction is not required, the gear mechanism may be omitted, and the winding tube 9 and the operating pulley 10 may be directly connected.

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

A hole 22 capable of supporting the support shaft 7 is provided in the lower part of the operation plate 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 can be installed so as to be able to perform relative to the operation panel 6. The rotation may also be installed so as not to rotate relative to the operation panel 6. When a ratchet mechanism or the like that can rotate and can be held at a rotating position is provided, the height of the lower beam 5 when the curtain 4 is in the lower limit state can be finely adjusted.

In addition, in FIG. 2, it may be configured to prevent the relative rotation of the operation panel 6 in the clockwise direction from exceeding a certain angle.

In addition, a fixing member (not shown) fixed to the fixed shaft 11 (or the supporting member 2a) is provided with a rope cover 20 that prevents the operation rope 3 hooked on the operation pulley 10 from slipping off the operation pulley 10.

In the example shown in the figure, two rope guides 12 and 13 extending in a cylindrical shape are provided on the left end surface of the operation panel 6. The rope guide portion 12 guides one side (front side) of the loop-like operation rope 3 hanging down from the operation pulley 10 so that it hangs from above the rope guide portion 12, and the rope guide portion 13 guides the loop-like operation rope 3 hanging down from the operation pulley 10 The other side (rear side) of the cable is suspended from above the rope guide 13 and below the rope guide 12 (refer to FIG. 2).

The operation panel 6 configured in this way is configured such that when the operation cord 3 is operated, the operation panel 6 performs a pendular motion (pendular motion) such that the distance between the relatively movable double curtains 4 is increased. In particular, the operating panel 6 performs a pendulum movement such that the positional relationship between the winding tube 9 and the support shaft 7 is changed between the positional relationship at rest and the positional relationship at the time of operation. In addition, the operation panel 6 is configured such that the interval during the operation of the double-layer curtain 4 is greater than the interval during the static state.

Hereinafter, the operation of the operation panel 6 will be described in more detail with reference to FIG. 4. First, referring to Figure 4(a), the operating panel 6 is supported to be able to rotate relative to the operating pulley 10 and the winding tube 9. When the lower beam 5 is in a static state at the lower limit position, the middle position and the upper limit position, respectively, through 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) and the operation panel 6 is applied to the direction in which the front and rear curtains 4 are closely attached, that is, the front side (as shown in Figure 4(a)) (Clockwise) torque (torque). The operation rope 3 hangs down on the basis of the rope guides 12 and 13.

In the static state where the lower beam 5 is at the lower limit position, or the lower beam 5 is at the middle position or the upper limit position and the curtain 4 is wound around the winding tube 9 at a roll diameter R, the double-layer curtain 4 is close to or attached to each other In a tight position (the interval between the double-layer curtain 4 is d1), the interval between the double-layer curtain 4 is constant. Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layer curtain 4 can be shifted to form a semi-transmissive state, or the light-transmitting portion 4b of the curtain 4 and the light-shielding portion 4a can be completely overlapped to form a light-shielding state, which can particularly improve The light-shielding property in the light-shielding state. In addition, from the perspective of improving the light-shielding property of the double-layer curtain 4, it is preferable to arrange the upper end of the curtain 4 in a manner such that the position where the curtain 4 hangs from the winding tube 9 and the support shaft 7 is overlapped in the front-rear direction in the lower limit state. Installed on the winding tube 9 and the support shaft 7.

Next, referring to Figure 4(b), when the operating rope 3 is operated from the state where the lower beam 5 is located at the lower limit position or the intermediate position to raise the lower beam 5, the cord 4 is wound on the winding tube 9 . At this time, the operating rope 3 is in contact with the indoor side rope guide 12 and a counterclockwise torque is applied to the operating panel 6, thereby driving the operating panel 6 to make a pendulum movement, thereby making the interval d2 during the operation of the double curtain 4 Greater than the interval d1 at rest. Therefore, during the lifting operation, the double-layer curtain 4 moves relatively without friction, or friction occurs only during a part of the lifting process, or the friction is weakened, so there is no possibility of damaging the curtain 4.

Similarly, referring to Figure 4(c), when the operating rope 3 is operated from the state where the lower beam 5 is located at the intermediate position or the upper limit position to lower the lower beam 5, the curtain 4 wound on the winding tube 9 descends . At this time, because the operating rope 3 is in contact with the indoor side rope guide 13, a counterclockwise torque is applied to the operating panel 6, thereby driving the operating panel 6 to make a pendulum movement, thereby making the operation interval of the double curtain 4 d3 is greater than the interval d1 at rest. Therefore, during the lowering operation, the double-layer curtain 4 moves relatively without friction, or friction occurs only during a part of the lifting process, or the friction is weakened, so there is no possibility of damaging the curtain 4. In addition, even if friction occurs locally when the fabric winding thickness of the cord 4 approaches its upper limit, the friction force tends to weaken.

Therefore, in the roller blind 1 of the first embodiment, during the lifting operation, the operating panel 6 is rotated by the pulling force of the operating rope 3, so that the double-layer curtain 4 is relatively moved in a separated state. There is no friction (or, even if friction occurs, the friction is weakened), so there is no possibility of damage to the cord 4 (or the possibility is reduced). In addition, when in a stationary state, the operating cord 3 loses tension, and the operating panel 6 rotates in the direction in which the double-layer curtain 4 is approached by the weight of the curtain 4 or the like. Therefore, the interval between the double-layer curtain 4 can be reduced, or By adhering the double-layer curtain 4 closely, the light-shielding property when the light-transmitting portion 4b and the light-shielding portion 4a of the curtain 4 are completely overlapped and formed into a light-shielding state can be improved.

[Second Embodiment]

Next, the structure of the roller blind 1 of the second embodiment of the present invention will be described with reference to FIGS. 5 to 7. FIG. 5 is a front view showing the schematic structure of the roller blind 1 of the second embodiment of the present invention, and FIG. 6 is an exploded perspective view showing the schematic structure around the operation panel 6 in the roller blind 1 of the second embodiment of the present invention. In addition, (a), (b), and (c) in FIG. 7 are diagrams for explaining the operation of the operation panel 6 in the roller blind 1 of the second embodiment of the present invention. In addition, the same reference numerals are given to components that perform the same functions as in 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), the other structure of the roller blind 1 of the second embodiment shown in FIG. 5 is roughly the same as that of the first embodiment. the same. Therefore, in the following description, the support member 2a and the operation panel 6 of the second embodiment will be mainly described.

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 of the winding tube 9, the winding tube 9 is supported so as to be rotatable with respect to the fixed shaft 11 extending from the supporting member 2a, as in the first embodiment. The operating pulley 10 is provided with a through hole to use the fixed shaft 11 as a rotating shaft. The winding tube 9 can rotate with the rotation of the operating pulley 10.

As in the first embodiment, the right end of the operating pulley 10 is provided with a substantially cylindrical rotation support portion 24. However, the operation panel 6 of the second embodiment is provided with an elongated hole-shaped rotation receiving portion 23 having a larger diameter than the rotation supporting portion 24. The long hole-shaped rotation receiving portion 23 is formed to straddle the fixed shaft 11 and be able to rotate relative to the supporting shaft 16 described later, and the relative rotation angle is restricted to a certain angle the following. The shape of the support plate 8 of this embodiment is substantially the same as the shape of the operation plate 6 of this embodiment, and is provided with an elongated hole-shaped rotation receiving portion 23 (not shown) similar to the operation plate 6 of this embodiment.

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 Rotate the shaft to move the pendulum. Similarly, at a position above the outdoor side of the support plate 8, there is also a rotation shaft hole 27 (not shown) through which the support shaft 16 extending from the support member 2b is inserted, so that the support plate 8 can support the shaft 16 acts as a rotation axis for pendulum movement. In addition, it may be configured such that the operation plate 6 and the support plate 8 are respectively provided with a support shaft 16 and the support members 2a and 2b are respectively provided with a rotation shaft hole portion 27.

Therefore, the operation panel 6 and the support plate 8 of the second embodiment can use the support shaft 16 as a rotation axis, and the rotation range is restricted by the long hole-shaped rotation receiving portion 23, relative to the operation pulley 10 and the winding tube 9 Perform rotation.

As in the first embodiment, above the operation panel 6, other members not shown including the cord cover 20 are provided on the fixed shaft 11. In addition, the cord cover 20 may be formed in a form attached to the support member 2a. In the lower part of the operation panel 6, a hole 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 installed so as to be rotatable with respect to the operation panel 6 or may be installed so as to be unable to rotate with respect to the operation panel 6. In the case where a ratchet mechanism or the like that can rotate and can be held at the rotating position is provided, the height of the lower beam 5 when the curtain 4 is at the lower limit position can be finely adjusted.

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 this embodiment, the support shaft 7 is configured to have a function equivalent to the rope guides 12 and 13 of the first embodiment. In addition, a cord guide 14 is provided at the lower end of the support member 2a, and the operation cord 3 hangs down from the front side of the cord guide 14. That is, the loop operation that hangs down from the operation pulley 10 After the rope 3 goes around the outdoor side of the support shaft 7, it hangs down from the rope guide 14 under the guidance of the rope guide 14 (refer to FIG. 5). In addition, the shape of the support member 2b is substantially the same as the shape of the support member 2a except for the point that the rope guide 14 is not provided.

Therefore, the operation panel 6 of the second embodiment is also configured to perform a pendulum movement when the operation cord 3 is operated to increase the interval between the relatively movable double-layer curtains 4. In particular, the operating panel 6 performs a pendulum movement such that the positional relationship between the winding tube 9 and the support shaft 7 is changed between the positional relationship at rest and the positional relationship at the time of operation. In addition, the operation panel 6 is configured such that the interval during the operation of the double-layer curtain 4 is greater than the interval during the static state. In addition, for the pendulum movement, the rope guide 14 is not an essential part. In addition, it may be formed such that the two rope guides 12 and 13 as in the first embodiment are provided on the front side of the curtain cloth 4 under the winding tube, and the operation ropes 3 are arranged from the back side of the rope guides 12 and 13 respectively. by. It is also possible to form the part of the support shaft 7 that is in contact with the operation cord 3 as another rotatable member, 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 Figure 7(a), the operating panel 6 is supported so that it can rotate relative to the operating pulley 10 and the winding tube 9 with the support shaft 16 as a rotation axis, and the lower beam 5 is at the lower limit position and the intermediate position, respectively And when the upper limit position is in a static state, through 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), the operation panel 6 is applied to the direction in which the front and rear curtains 4 are pressed tightly. Torque on the front side (clockwise in Figure 7(a)). Furthermore, the operation cord 3 hangs down on the basis of the cord guide 14 provided in the support member 2a.

In the static state where the lower beam 5 is at the lower limit position, or the lower beam 5 is at the middle position or the upper limit position and the curtain 4 is wound around the winding tube 9 at a roll diameter R, the double-layer curtain 4 is close to or attached to each other In a tight position (the interval between the double-layer curtain 4 is d1), the interval between the double-layer curtain 4 is constant. Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layer curtain 4 can be shifted to form a semi-transmissive state, or the light-transmitting portion 4b of the curtain 4 and the light-shielding portion 4a can be completely overlapped to form a light-shielding state, which can particularly improve When shading Shading. In addition, from the perspective of improving the light-shielding properties of the double-layer curtain 4, it is preferable to arrange the curtain 4 in a manner overlapping in the front-rear direction at the position where the curtain 4 hangs from the winding tube 9 and the support shaft 7 in the lower limit state. The upper end is installed on the winding tube 9 and the support shaft 7.

Next, referring to Figure 7(b), when the operating rope 3 is operated from the state where the lower beam 5 is located at the lower limit position or the intermediate position to raise the lower beam 5, the cord 4 is wound on the winding tube 9 . At this time, torque is applied to the support shaft 7 through the operating rope 3 with the rope guide 14 as the fulcrum, thereby driving the operating panel 6 to make a pendulum movement, thereby making the operation interval d2 of the double-layer curtain 4 greater than that at rest. The interval d1. Therefore, during the lifting operation, the double-layer curtain 4 moves relatively without friction, or friction occurs only during a part of the lifting process, or the friction is weakened, so there is no possibility of damaging the curtain 4.

Similarly, referring to FIG. 7(c), when the operating rope 3 is operated from the state where the lower beam 5 is at the intermediate position or the upper limit position to lower the lower beam 5, the curtain 4 wound on the winding tube 9 descends . At this time, torque is applied to the support shaft 7 through the operating rope 3 with the rope guide 14 as a fulcrum, thereby driving the operating panel 6 to make a pendulum movement, thereby making the operation interval d3 of the double-layer curtain 4 greater than that at rest. The interval d1. Therefore, during the lowering operation, the double-layer curtain 4 moves relatively without friction, or friction occurs only during a part of the lifting process, or the friction is weakened, so there is no possibility of damaging the curtain 4.

Therefore, in the roller blind 1 of the second embodiment, during the lifting operation, the operating panel 6 is rotated by the pulling force of the operating cord 3, so that the double-layer curtain 4 moves relatively in a separated state without friction. (Or, even if friction occurs, the friction is weakened), so there is no possibility of damaging the cord 4. In addition, when in a stationary state, the operating cord 3 loses tension, and the operating panel 6 rotates in the direction in which the double-layer curtain 4 is approached by the weight of the curtain 4 or the like. Therefore, the interval between the double-layer curtain 4 can be reduced, or By adhering the double-layer curtain 4 closely, the light-shielding property when the light-transmitting portion 4b of the curtain 4 and the light-shielding portion 4a are completely overlapped to form a light-shielding state can be improved.

In particular, in the roller blind 1 of the second embodiment, compared to the first embodiment, the installation space of the front and rear width of the roller blind 1 based on the pendulum movement of the operating panel 6 can be reduced. In addition, by setting The rope guide 14 can rotate the operation panel 6 and the support plate 8 in a direction in which the double curtain 4 is separated when the operation rope 3 is pulled downward.

[Third Embodiment]

Next, the structure of the roller blind 1 of the third embodiment of the present invention will be described with reference to FIGS. 8 to 12. FIG. 8 is a front view showing the schematic structure of the roller blind 1 of the third embodiment of the present invention, and FIG. 9 is an exploded perspective view showing the schematic structure around the operation panel 6 in the roller blind 1 of the third embodiment of the present invention. In addition, (a), (b), and (c) in FIG. 10 are diagrams for explaining the operation of the operation panel 6 in the roller blind 1 of the third embodiment of the present invention. (A) and (b) in FIG. 11 are diagrams explaining the operation of the operation panel 6 in the roller blind 1 according to the third embodiment of the present invention. (A) and (b) in FIG. 12 are diagrams for explaining the operation panel 6 in the roller blind 1 of the third embodiment of the present invention in comparison with a comparative example. In addition, the same reference numerals are given to components that perform the same functions as in the first embodiment.

Except for the difference in the shapes of the operating pulley 10, the supporting member 2a (and the supporting member 2b), and the operating plate 6 (and the supporting plate 8), the configuration of the roller blind 1 of the third embodiment shown in FIG. The configuration of the embodiment is roughly the same. Therefore, in the following description, the support member 2a and the operation panel 6 of the third embodiment will be mainly described.

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

The operation panel 6 of the third embodiment has a slender shape and is arranged between the operation pulley 10 and the supporting member 2a near the outdoor side to avoid the fixed shaft 11, and the operation panel 6 is provided The rotation shaft hole 27 through which the support shaft 16 extending from the support member 2a is inserted is inserted, so that the operation plate 6 performs a pendulum movement with the support shaft 16 as a rotation shaft. As in the first embodiment, in the lower part of the operation panel 6 A hole 22 is provided in the hole 22 to mount one end of the support shaft 7 extending between the support members 2a and 2b on the operation panel 6 using a holding member 21 such as a rivet.

The shape of the support plate 8 of this embodiment is also substantially the same as that of the operation plate 6 of this embodiment. The support shaft 7 may be installed so as to be able to rotate relative to the operation plate 6 and the supporting plate 8, or it may be installed so as not to be able to rotate relative to the operation plate 6 and the supporting plate 8. In addition, it may be configured such that the operation plate 6 and the support plate 8 are provided with a support shaft 16 and the support members 2a and 2b are respectively provided with a rotation shaft hole portion 27.

The operation plate 6 and the support plate 8 of the third embodiment can be rotated with respect to the operation pulley 10 and the winding pipe 9 with the support shaft 16 as a rotation axis. The position of the pendulum movement is determined by the dead weight of the lower beam 5 at the lower end of the curtain 4 suspended and supported by the support shaft 7 and the winding tube 9.

The operation panel 6 and the support plate 8 of the third embodiment thus constituted can rotate relative to the operation pulley 10 and the winding tube 9, and can perform a pendulum with the support shaft 16 as a rotating shaft under the action of the weight of the screen 4 etc. movement.

A rope cover 20 (not shown) is arranged above the supporting member 2a to prevent the operation rope 3 hooked on the operation pulley 10 from falling off. In addition, the cord cover 20 may be composed of 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 curtain fabric 4, and the operation cord 3 is passed through the back side of the support shaft 7. Therefore, in this embodiment, the support shaft 7 is configured to have a function equivalent to the rope guides 12 and 13 of the first embodiment. In addition, a cord guide 14 is provided at the lower end of the support member 2a, and the operation cord 3 hangs down from the front side of the cord guide 14. That is, the loop-like operation rope 3 hanging down from the operation pulley 10 passes around the outdoor side of the support shaft 7, and then hangs down from the rope guide part 14 under the guidance of the rope guide part 14 (refer to FIG. 8). In addition, the shape of the support member 2b is substantially the same as the shape of the support member 2a except for the point that the rope guide 14 is not provided.

Therefore, the operation panel 6 of the third embodiment is also configured to perform a pendulum movement when the operation cord 3 is operated to increase the distance between the relatively movable double-layer curtains 4. Especially, the operation panel 6 Perform a pendulum movement in such a way that the positional relationship between the winding tube 9 and the support shaft 7 is changed between the positional relationship at rest and the positional relationship at the time of operation. In addition, the operation panel 6 is configured such that the interval during the operation of the double-layer curtain 4 is greater than the interval during the static state.

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 Figure 10(a), the operating panel 6 is supported to be able to rotate relative to the operating pulley 10 and the winding tube 9 with the support shaft 16 as a rotating shaft, and when the lower beam 5 is in a static state at the lower limit position At this time, through 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), the operation panel 6 is applied to the direction in which the front and rear curtains 4 are in close contact, that is, the front side (Figure 10(a) ) Is the torque in the clockwise direction. Furthermore, the operation cord 3 hangs down on the basis of the cord guide 14 provided in the support member 2a.

When the lower beam 5 is in a static state at the lower limit position and the double-layer curtain 4 is in a position close to or close to each other (the interval between the double-layer curtain 4 is d1), the interval between the double-layer curtain 4 is constant. Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layer curtain 4 can be shifted to form a semi-transmissive state, or the light-transmitting portion 4b of the curtain 4 and the light-shielding portion 4a can be completely overlapped to form a light-shielding state, which can particularly improve The light-shielding property in the light-shielding state. In addition, from the perspective of improving the light-shielding properties of the double-layer curtain 4, it is preferable to arrange the curtain 4 in a manner overlapping in the front-rear direction at the position where the curtain 4 hangs from the winding tube 9 and the support shaft 7 in the lower limit state. The upper end is installed on the winding tube 9 and the support shaft 7.

d1)。因此，在簾布4位於中間位置以下的位置處時，能夠使雙層簾布4之透光部4b與遮光部4a錯開而形成為半透光狀態、或者使簾布4之透光部4b與遮光部4a完全重疊而形成為遮光狀態，尤其能夠提高遮光狀態時的遮光性。 In addition, referring to Figure 10(b), when the lower beam 5 is in a static state at the intermediate position, as the lower beam 5 moves from the lower limit position to the upper limit position, the winding diameter R of the cord 4 wound on the winding tube 9 As the curtain 4 hangs down by the weight of the curtain 4, the position of the curtain 4 moves toward the outdoor side. However, the interval between the double curtains 4 is reduced or the position where the double curtains 4 adhere to each other does not change before reaching a predetermined height ( Interval d1' of double curtain 4

d1). Therefore, when the curtain 4 is located below the intermediate position, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layer curtain 4 can be shifted to form a semi-translucent state, or the light-transmitting portion 4b and the light-shielding portion of the curtain 4 4a is completely overlapped and formed into a light-shielding state, and in particular, the light-shielding property in the light-shielding state can be improved.

In addition, referring to Figure 10(c), when the lower beam 5 is in a static state at the upper limit position, the winding diameter R of the cord 4 wound on the winding tube 9 increases to the maximum, and hangs down by the weight of the cord 4 etc. The position of the curtain 4 is further moved to the outdoor side, but in this state, the position where the distance between the double curtain 4 is reduced is also fixed.

However, in this state, since the curtain 4 itself is in an open state, it is necessary to pay attention to the close state of the double-layer curtain 4 at rest to prevent practical problems.

Next, referring to FIG. 11( a ), when the operating rope 3 is operated from the state where the lower beam 5 is at the lower limit position to raise the lower beam 5, the cord 4 is wound on the winding tube 9. At this time, torque is applied to the support shaft 7 through the operating rope 3 with the rope guide 14 as the fulcrum, thereby driving the operating panel 6 to make a pendulum movement, thereby making the operation interval d2 of the double-layer curtain 4 greater than that at rest. The interval d1. Therefore, during the lifting operation, the double-layer curtain 4 moves relatively without friction, or only in a part of the lifting process, or the friction is weakened, so there is no possibility of damaging the curtain 4.

Similarly, referring to Fig. 11(b), when the operating rope 3 is operated from the state where the lower beam 5 is located at the intermediate position or the upper limit position to lower the lower beam 5, the cord 4 wound on the winding tube 9 descends . At this time, torque is applied to the support shaft 7 through the operating rope 3 with the rope guide 14 as a fulcrum, thereby driving the operating panel 6 to make a pendulum movement, thereby making the operation interval d3 of the double-layer curtain 4 greater than that at rest. The interval d1. Therefore, during the lowering operation, the double-layer curtain 4 moves relatively without friction, or friction occurs only during a part of the lifting process, or the friction is weakened, so there is no possibility of damaging the curtain 4.

Here, in order to explain the precautions in the pendulum movement of the operating panel 6 of the third embodiment, FIG. 12(b) shows a difference from the present embodiment shown in FIG. 12(a), but the operating panel A comparative example in which the supporting shaft 16 of 6 is arranged at a position close to the fixed shaft 11. In the present embodiment shown in Figure 12(a), when the lower beam 5 is in a static state at the lower limit position, under the weight of the curtain 4 suspended and supported on the support shaft 7 and the winding tube 9, the double When the layer curtains 4 are close to or close to each other (the interval between the double layer curtains 4 is d1), the interval between the double layer curtains 4 is constant.

On the other hand, in the comparative example shown in FIG. 12(b), since the support shaft 16 is arranged closer to the fixed shaft 11, the interval D between the double-layer curtains 4 becomes larger (D>d1), thereby 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 at the lower limit position It is determined based on the static state, so that the interval between the double-layer curtains 4 is reduced or the double-layer curtains 4 are in close contact with each other.

Therefore, in the roller blind 1 of the third embodiment, during the lifting operation, the operating panel 6 is rotated by the pulling force of the operating cord 3, so that the double-layer curtain 4 moves relatively in a separated state without friction. (Or, even if friction occurs, the friction is weakened), so there is no possibility of damaging the cord 4. In addition, when in a stationary state, the operating rope 3 loses its tension, and the operating panel 6 is rotated in the direction of bringing the double curtain 4 closer under the weight of the curtain 4 and the like. Therefore, the interval between the double curtain 4 can be reduced, or By making the double-layer curtain fabrics 4 close to each other, the light-shielding property when the light-transmitting portion 4b of the curtain fabric 4 and the light-shielding portion 4a are completely overlapped to form a light-shielding state can be improved.

In particular, in the roller blind 1 of the third embodiment, since the support shaft 7 is arranged on the indoor side and swings below the indoor side, it is formed into a plate structure. Therefore, compared with the first embodiment, it is possible to reduce operation-based The setting space of the front and back width of the roller blind 1 is determined by the pendulum movement of the plate 6.

[Fourth Embodiment]

Next, referring to FIGS. 13 to 14, the configuration of the roller blind 1 of the fourth embodiment of the present invention as a modification of the first embodiment will be described. Fig. 13 is an exploded perspective view showing a schematic configuration around the operation panel 6 in the roller blind 1 of the fourth embodiment of the present invention.

In addition, (a), (b), and (c) in FIG. 14 are diagrams for explaining the operation of the operation panel 6 in the roller blind 1 of the fourth embodiment of the present invention. In addition, the same reference numerals are given to components that perform the same functions as in the first embodiment.

In addition to the winding gear mechanism (drive gear 31, transmission gear 32, driven gear 33) provided between the operating panel 6 and the operating pulley 10, the structure of the roller blind 1 shown in FIGS. 13 and 14 is the same as the first real The construction methods are the same. Therefore, in the following description, the operation panel 6, the operation pulley 10, and the winding gear mechanism (the driving gear 31, the transmission gear 32, and the driven gear 33) of the fourth embodiment will be mainly described.

The specific configuration of the operation panel 6 and its surroundings in the fourth embodiment will be described with reference to FIG. 13. At the right end of the winding tube 9, the winding tube 9 is supported so as to be rotatable with respect to the fixed shaft 11 extending from the supporting member 2a, as in the first embodiment. The operating pulley 10 is provided with a through hole to use the fixed shaft 11 as a rotating shaft. The winding tube 9 can rotate with the rotation of the operating pulley 10.

A drive gear 31 that rotates with the rotation of the operating pulley 10 is fixed to the right end of the operating pulley 10. At the right end of the drive gear 31, similar to the first embodiment, a substantially cylindrical rotation support portion 24 is provided. Moreover, the operation board 6 is provided with a round hole-shaped rotation receiving portion 23 having a diameter slightly larger than the rotation supporting portion 24. Therefore, the operation board 6 is supported so as to be rotatable with respect to the fixed shaft 11, the operation pulley 10 and the winding pipe 9.

In addition, the right end 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 for passing through holding members such as rivets 21 supports the driven gear 33 so as to be rotatable with respect to the operation panel 6.

In addition, a transmission gear 32 is attached to the operation board 6 so as to be rotatable relative to the operation board 6, and the transmission gear 32 is used to transmit the rotation of the driving gear 31 to the driven gear 33. The transmission gear 32 is configured to transmit the rotation of the driving gear 31 to the driven gear 33.

Therefore, if the winding tube 9 is set as the first winding axis for the cord fabric 4, the support shaft 7 functions as the second winding axis for the cord fabric 4. In addition, the diameter of the first winding shaft is greater than the diameter of the second winding shaft. The driving gear 31 and the driven gear 33 have the same number of teeth, so the number of rotations of the second winding shaft is the same as that of the first winding shaft. Therefore, the winding length of the cord fabric 4 per unit revolution of the first winding shaft is different from the winding length of the cord fabric 4 per unit revolution of the second winding shaft. When the operating rope 3 is pulled to rotate the operating pulley 10 in the winding direction, the first winding shaft rotates to wind the cord 4, and the second winding shaft also winds the cord 4, thereby raising the lower beam 5. During the ascent, it is wound on the front surface of the first winding shaft The rising speed of the side curtain 4 is different from the rising speed of the curtain 4 wound on the rear side of the second winding shaft (rotation speed of the first winding shaft>rotation speed of the second winding shaft), therefore, the shading part 4a The state where the light-transmitting portion 4b overlaps and the state where the light-shielding portion 4a overlaps the light-shielding portion 4a alternately appear. This situation is the same when unwinding. In the state where the curtain 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 changed.

The operation panel 6 of the fourth embodiment configured in this way also performs a pendulum movement when the operation cord 3 is operated to increase the distance between the relatively movable double-layer curtains 4. In particular, the operating panel 6 performs a pendulum movement such that the positional relationship between the winding tube 9 and the support shaft 7 is changed between the positional relationship at rest and the positional relationship at the time of operation. In addition, the operation panel 6 is configured such that the interval during the operation of the double-layer curtain 4 is greater than the interval during the static state.

Hereinafter, the operation of the operation panel 6 will be described in more detail with reference to FIG. 14. First, referring to Figure 14(a), the operating panel 6 is supported to be able to rotate relative to the operating pulley 10 and the winding tube 9. When the lower beam 5 is in a static state at the lower limit position, the middle position and the upper limit position, respectively, through its own weight (The weights of the curtain 4, the lower beam 5, the operation panel 6, the support plate 8, and the support shaft 7) and the operation panel 6 is applied to the direction in which the front and rear curtains 4 are attached to each other, that is, the front side (as shown in Figure 14(a)) (Clockwise) torque. The operation rope 3 hangs down on the basis of the rope guides 12 and 13.

In this example, when the lower beam 5 is in a static state at the lower limit position, the cord 4 is set to be not wound around the winding tube 9 and the support shaft 7, so that the double cord 4 is close to or close to each other When the position (the interval between the double-layer curtain 4 is d1), the interval between the double-layer curtain 4 is fixed. In addition, from the perspective of improving the light-shielding properties of the double-layer curtain 4, it is preferable to arrange the curtain 4 in a manner overlapping in the front-rear direction at the position where the curtain 4 hangs from the winding tube 9 and the support shaft 7 in the lower limit state. The upper end is installed on the winding tube 9 and the support shaft 7.

Moreover, in the state where the lower beam 5 is at the middle position or the upper limit position, and the curtain 4 is wound around the winding tube 9 and the support shaft 7 with the winding diameters R1 and R2, respectively, the double-layer curtain 4 is in a position close to or close to each other The interval between the double-layer curtain 4 is also fixed. In addition, in the fourth embodiment, since the winding gear mechanism (the driving gear 31, the transmission gear 32, and the driven gear 33) is provided, the 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-layer curtain 4 is improved.

Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layer curtain 4 can be shifted to form a semi-transmissive state, or the light-transmitting portion 4b of the curtain 4 and the light-shielding portion 4a can be completely overlapped to form a light-shielding state, which can particularly improve The light-shielding property in the light-shielding state.

Next, referring to Figure 14(b), when the operating rope 3 is operated from the state where the lower beam 5 is located at the lower limit position or the intermediate position to raise the lower beam 5, the cord 4 is wound around the winding tube 9 and Support shaft 7 on. At this time, torque is applied to the rope guide 12 through the operation rope 3, thereby driving the operation panel 6 to make a pendulum movement, thereby making the interval d2 during operation of the double-layer curtain 4 greater than the interval d1 at rest. Therefore, during the ascent operation, even if the front and rear curtains 4 move relative to each other due to different ascent speeds, there will be no friction when the double-layer curtain 4 moves relative to each other, or friction occurs only during a part of the lifting process, or the friction is weakened. There is a possibility of damage to the cord 4.

Similarly, referring to FIG. 14(c), when the operating rope 3 is operated from the state where the lower beam 5 is at the intermediate position or the upper limit position to lower the lower beam 5, it is wound around the winding tube 9 and the support shaft 7 The curtain 4 drops. At this time, a torque is applied to the rope guide 13 through the operation rope 3, thereby driving the operation panel 6 to make a pendulum movement, thereby making the interval d3 during operation of the double-layer curtain 4 greater than the interval d1 at rest. Therefore, during the lowering operation, even if the front and rear curtains 4 move relative to each other due to different descending speeds, there will be no friction when the double-layer curtain 4 moves relatively, or friction occurs only during a part of the lifting process, or the friction is weakened. There is a possibility of damage to the cord 4.

Therefore, during the lifting operation, the operating panel 6 is rotated by the pulling force of the operating cord 3, so that the double-layer curtain 4 moves relative to each other in a separated state without friction (or, even if friction occurs, the friction is weakened) ), so there is no possibility of damaging the curtain 4. In addition, in a static state In the state, the operating rope 3 loses its tension, and the operating panel 6 rotates in the direction of bringing the double-layer curtain 4 closer under the weight of the curtain 4 and the like. Therefore, the interval between the double-layer curtain 4 can be reduced or the double-layer curtain 4 can be reduced. By being in close contact with each other, the light-shielding property when the light-transmitting portion 4b and the light-shielding portion 4a of the screen fabric 4 are completely overlapped to form a light-shielding state can be improved.

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

In addition, it is also possible to switch between the overlapping state of the light-shielding portion 4a and the light-transmitting portion 4b of the front and rear curtain 4 and the overlapping state of the light-shielding portion 4a (or the light-transmitting portion 4b) of each of the front and rear curtains 4 by only transmitting the above configuration. The structure can reduce the amount of up and down movement of the lower beam 5 during switching. Regarding the winding gear mechanism (driving gear 31, transmission gear 32, driven gear 33), it is sufficient to further provide an idling device on either or both of the driving gear 31 and the driven gear 33, wherein the idling device The amount of idling is equivalent to the light-shielding state where the light-transmitting part 4b and the light-shielding part 4a of the double-layer curtain 4 are overlapped to the translucent state where the light-transmitting part 4b and the light-shielding part 4a of the double-layer curtain 4 are staggered. Moving distance. For details of the idling device, please refer to, for example, Japanese Patent: Unexamined Publication No. 2012-77501.

As mentioned above, the present invention has been described with examples of specific embodiments. However, the present invention is not limited to the above-mentioned embodiment examples, and various modifications can be made without departing from the scope of the technical idea.

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

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

In addition, in the examples of the above-mentioned embodiments, the double-layer curtain 4 formed by folding back a single curtain is alternately formed with light-transmitting portions 4b for transmitting part of light and light-shielding portions 4a for shielding light in stripes. The example is described, but as long as it is a double-layer curtain, even if it is not a single curtain or is not in a form in which the light-transmitting parts 4b and the light-shielding parts 4a are alternately formed, the operation panel 6 according to the present invention has the following effects. That is: during the lifting operation, the operating panel 6 is rotated by the pulling force of the operating rope 3, so that the double-layer curtain 4 moves relative to each other in a separated state without friction, or friction occurs only in part of the lifting process , Or the friction is weakened.

In addition, the external shape of the support members 2a, 2b, the operation panel 6 and the support panel 8, the shape of the rope guides 12, 13, 14, etc. can be formed in various shapes as long as they can produce the functions and effects of the present invention.

In addition, in each embodiment, the support plate 8 has been described in the form of pendulum movement following the pendulum movement of the operating panel 6. However, the technical solutions of the various embodiments may be combined and applied to form only the operating plate 6 makes a pendulum movement, so that the gap between the double-layer curtains that are close to or close to each other when they are at rest increases during operation. For example, the first embodiment and the second embodiment (or the fourth embodiment or a modified example thereof) can be combined to form a form in which the support plate 8 is not provided, and the support shaft is provided on the support member 2b. The rotation guide hole at the end of 7 and the rotation guide hole is appropriately equipped with a rotation restriction function, so that the end of the support shaft 7 that rotates with the pendulum movement of the operating plate 6 is guided through the rotation guide hole Therefore, the distance between the double-layer curtains that are close to or close to each other when stationary is increased only through the pendulum movement of the operating panel 6 during operation.

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

[Fifth Embodiment]

Next, the structure of the roller blind 1 of the fifth embodiment of the present invention will be described with reference to FIGS. 15 to 18. In each of the above embodiments, the example in which one side of the curtain 4 is mounted on the winding tube 9 and the other side is mounted on the support shaft 7 has been described. In the example of this embodiment, one side of the curtain 4 is mounted on the winding tube 9 The pipe 9 and the other side are installed on the fixing part 2c, and the fixing part 2c is arranged on the outdoor end surface of the mounting frame 2. FIG. 15 is a front view showing the schematic structure of the roller blind 1 of the fifth embodiment of the present invention, and FIG. 16 is a side view showing the schematic structure of the roller blind 1 of the fifth embodiment of the present invention. Fig. 17 is an exploded perspective view showing a schematic configuration around the operating unit 60 in the roller blind 1 of the fifth embodiment of the present invention. In addition, (a), (b), and (c) in FIG. 18 are diagrams illustrating the operation of the operation unit 60 in the roller blind 1 of the fifth embodiment of the present invention. In addition, the same reference numerals are assigned to the same constituent members as in the above-mentioned respective embodiments.

The roller blind 1 shown in FIGS. 15 and 16 has support members 2a and 2b fixed at both ends of the mounting frame 2. The cylindrical winding tube 9 is wound through the fixed shaft 11 extending from the support members 2a and 2b. It is supported between the supporting members 2a and 2b in a rotatable manner.

The right end of the winding tube 9 is provided with an operating unit 60 that can rotate relative to the winding tube 9 and the supporting members 2a and 2b. In addition, an operation pulley 10 is housed in the operation unit 60, and the loop-like operation rope 3 is hung on the operation pulley 10 and hangs down therefrom. In addition, the roller blind 1 is configured such that the winding tube 9 can be rotated through the operation of the operating cord 3, and the surface of the operating pulley 10 on which the operating cord 3 is wound has a highly frictional surface shape. In addition, the operation cord 3 is composed of a bead chain, and the surface of the operation pulley 10 that is hung around the bead chain may be formed to have irregularities in a shape corresponding to the ball portion of the bead chain. In addition, the specific configuration and operation of the operation unit 60 will be described in detail later.

One side of the cord 4 is mounted on the winding tube 9, and the cord 4 is suspended and supported on the winding tube 9 in a windable manner. The cord 4 hangs down from the winding tube 9 and passes through a lower beam that functions as a counterweight member 5 and the other side folded back is mounted on the fixing part 2c, which is arranged on the outdoor side end surface of the mounting frame 2 located on the upper part of the winding tube 9. For example, the fixing portion 2c may be configured such that a fabric pressing plate fixed to the end of the screen cloth 4 by welding or the like is detachably locked in the fixing portion 2c. And, from the winding tube 9 A roller 15 is inserted into the lower end of the curtain cloth 4 hanging down from the fixed portion 2c, and the roller 15 is rotatably supported at both ends of the lower beam 5. As a result, the cord 4 is set to be tensioned through the weight of the lower beam 5.

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

In addition, a clockwork transmission device for reducing the operating force when winding up the curtain 4 is housed at the left end of the winding tube 9, and a brake device for preventing the curtain 4 from falling due to its own weight is housed at the right end (not shown) Icon).

The curtain 4 is alternately formed with light-transmitting parts 4b for transmitting part of light and light-shielding parts 4a for shielding light in stripes, and the curtain 4 is suspended and supported in a double-layered state. Therefore, the operation of the operation rope 3 The front and rear curtains 4 are relatively moved in the vertical direction to adjust the degree of overlap between the light-transmitting portion 4b and the light-shielding portion 4a, and thereby 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, and the two operation panel members 6a and 6b are integrally formed so that the operation pulley 10 and the cord cover 20 can be sandwiched and housed inside. The operation panel member 6b is provided with protruding cord guides 12 and 13 linearly extending toward the operation panel member 6a. The looped operation rope 3 hung on the operation pulley 10 hangs downward under the guidance of the rope guides 12 and 13. The cord cover 20 is fixed to the supporting member 2a. In addition, the rope cover 20 may take any form as long as it is set to prevent the operation rope 3 hung on the pulley 10 from slipping off the pulley 10, for example, in addition to the form being housed inside the operation unit 60 as shown in the figure It can also be formed into a form fixed to the fixed shaft 11 or the supporting member 2a.

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

The operating pulley 10 is provided with a through hole to use a fixed shaft 11 extending from the supporting member 2a as a rotating shaft, and through the fixed shaft 11, the winding tube 9 can be rotated together with the rotation of the operating pulley 10 Way to support it. For this purpose, a fitting portion 25 fitted to the inner peripheral surface of the right end of the winding tube 9 is provided on the left end side of the operating pulley 10. In addition, the left end of the operating pulley 10 meshes with a gear mechanism (not shown) connected to a braking device housed in the winding tube 9. If speed increase or reduction is not required, the gear mechanism may be omitted, and the winding tube 9 and the operating pulley 10 may be directly connected.

The operating plate member 6a is provided with a circular hole-shaped rotation receiving portion 23a having a diameter larger than the outer diameter of the frame of the operating pulley 10, and the operating plate member 6b is provided with a semicircular hole-shaped rotating receiving portion 23b having a diameter larger than the outer diameter of the winding tube 9. Therefore, the operation unit 60 is supported to be able to rotate relative to the operation pulley 10 and the winding tube 9. In addition, a recess 20a is provided above the cord cover 20 fixed to the support member 2a, and a protruding piece 61 having a substantially inverted trapezoid shape is provided above the operation panel member 6a. In a state where the two operation panel members 6a and 6b are integrated so that the operation pulley 10 and the cord cover 20 can be sandwiched and housed inside, the protruding piece 61 is engaged with the recess 20a so as to be rotatable within a predetermined range in.

In addition, on the inner wall of the upper protruding piece of the cord cover 20 that can accommodate the operation panel member 6b inside, a stepped portion 20b that restricts the relative rotation of the operation unit 60 within a certain angle is provided. That is, when the operation unit 60 is relatively rotated, the stepped portion 20b can abut 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 operating unit 60 is restricted within a certain angle through the abutment between the edge portion 26 and the step portion 20b.

On the other hand, on the outdoor side end of the bottom surface of the mounting frame 2 fixed to the supporting members 2a and 2b at both ends, a substantially fin-shaped movable fin 40 is hung, and the movable fin 40 can rotate around its base axis.

Furthermore, since the curtain 4 hangs down from the fixed portion 2c provided on the outdoor side end surface of the mounting frame 2, when the relative rotation of the operation unit 60 causes the side end of the protruding piece 61 of the operation panel member 6a to press the movable wing At 40 o'clock, the movable fin 40 rotates, so that the outdoor side curtain 4 moves further toward the outdoor side.

The operation unit 60 configured in this way is configured to perform a pendulum movement so that the distance between the double-layer curtains 4 that can move relatively is increased when the operation cord 3 is operated. Furthermore, the operation unit 60 is configured to make the interval during the operation of the double-layer curtain 4 larger than the interval during the static state.

Hereinafter, the operation of the operation unit 60 will be described in more detail with reference to FIG. 18. First, referring to Figure 18(a), the operating unit 60 is supported to be able to rotate relative to the operating pulley 10 (and the winding tube 9). When the lower beam 5 is in a stationary state at the lower limit position, the middle position, and the upper limit position, respectively, The torque in the direction in which the front and rear curtains 4 are brought into close contact is applied to the operation unit 60 through its own weight (the weight of the curtain 4, the lower beam 5, etc.). Thereby, the operation cord 3 hangs down based on the cord guides 12 and 13.

In the static state where the lower beam 5 is at the lower limit position, or the lower beam 5 is at the intermediate position or the upper limit position and the curtain 4 is wound on the winding tube 9 with a prescribed roll diameter, the double-layer curtain 4 is close to each other Or at the close position (the interval between the double curtain 4 is d1), the interval between the double curtain 4 is constant. Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layer curtain 4 can be shifted to form a semi-transmissive state, or the light-transmitting portion 4b of the curtain 4 and the light-shielding portion 4a can be completely overlapped to form a light-shielding state, which can particularly improve The light-shielding property in the light-shielding state.

Next, referring to FIG. 18(b), when the operating rope 3 is operated from the state where the lower beam 5 is at the lower limit position or the intermediate position to raise the lower beam 5, the cord 4 is wound on the winding tube 9 . At this time, the operating rope 3 abuts against the indoor side rope guide 12 to apply a clockwise torque to the operating unit 60, thereby driving the operating unit 60 to make a pendulum movement, thereby, the side of the protruding piece 61 of the operating panel member 6a The end rotates the movable fin 40 to press the outdoor side curtain 4. Therefore, the interval d2 during operation of the double-layer curtain 4 is greater than the interval d1 at rest. Therefore, during the lifting operation, the double-layer curtain 4 moves relatively without friction, or friction occurs only during a part of the lifting process, or the friction is weakened, so there is no possibility of damaging the curtain 4.

Similarly, referring to FIG. 18(c), when the operating rope 3 is operated from the state where the lower beam 5 is located at the middle position or the upper limit position to lower the lower beam 5, the curtain 4 wound on the winding tube 9 descends . At this time, the operating cord 3 abuts against the indoor side cord guide 13 to apply a clockwise torque to the operating unit 60, thereby driving the operating unit 60 to make a pendulum movement, thereby, the side of the protruding piece 61 of the operating panel member 6a The end rotates the movable fin 40 to press the outdoor side curtain 4. Therefore, the interval d3 during operation of the double-layer curtain 4 is greater than the interval d1 at rest. Therefore, during the lowering operation, the double-layer curtain 4 moves relatively without friction, or friction occurs only during a part of the lifting process, or the friction is weakened, so there is no possibility of damaging the curtain 4. In addition, even if friction occurs when the fabric winding thickness of the cord fabric 4 is close to the upper limit, the friction force tends to weaken.

Therefore, in the roller blind 1 of the fifth embodiment, during the lifting operation, the operating unit 60 is rotated by the pulling force of the operating cord 3, so that the double-layer curtains 4 move relatively in a separated state without friction. (Or, even if friction occurs, the friction is weakened), so there is no possibility of damage to the cord 4 (or the possibility is reduced). In addition, when in a stationary state, the operating rope 3 loses tension, and the operating unit 60 rotates in the direction of the double-layer curtain 4 approaching by the weight of the curtain 4 and the like. Therefore, the interval between the double-layer curtain 4 can be reduced or The double-layer curtain fabrics 4 are in close contact with each other, so that the light-shielding property when the light-transmitting portion 4b of the curtain fabric 4 and the light-shielding portion 4a are completely overlapped to form a light-shielding state can be improved.

Here, the forms of the operation panel members 6a, 6b and the cord cover 20 constituting the operation unit 60 may be other forms as shown in FIG. 19, as long as they have a function to exert the above-mentioned functions. (A), (b), (c) in FIG. 19 are diagrams explaining the operation of the operation unit 60 in the modification of the roller blind 1 of the fifth embodiment of the present invention. In the example shown in FIG. 19, the cord guides 12 and 13 are provided in the operating unit 60 respectively. In addition, a rotation restricting shaft 63 is provided on the protruding piece 61 of the operating panel member 6a, and the relative rotation of the operating unit 60 is restricted to a certain angle through the rotation restricting groove 62 provided on the upwardly extending protruding piece of the cord cover 20 . In addition, it can also be formed in a form in which a rotation restricting groove 62 is provided on the protruding piece 61 of the operation panel member 6a, and a rotation restricting shaft 63 is provided on the protruding piece extending upward of the cord cover 20, so that it is not necessary to oppose the operation unit 60. When the rotation is restricted within a certain angle, there is no need to provide a mechanism for restricting the relative rotation of the operating unit 60.

The operation of the modified example shown in FIG. 19 will be described. First, referring to Figure 19(a), the operating unit 60 is supported to be able to rotate relative to the operating pulley 10 (and the winding tube 9). When the lower beam 5 is in a stationary state at the lower limit position, the middle position, and the upper limit position, respectively, The torque in the direction in which the front and rear curtains 4 are brought into close contact is applied to the operation unit 60 through its own weight (the weight of the curtain 4, the lower beam 5, etc.). Thereby, the operation cord 3 hangs down based on the cord guides 12 and 13.

In the static state where the lower beam 5 is at the lower limit position, or the lower beam 5 is at the intermediate position or the upper limit position and the curtain 4 is wound on the winding tube 9 with a prescribed roll diameter, the double-layer curtain 4 is close to each other Or at the close position (the interval between the double curtain 4 is d1), the interval between the double curtain 4 is constant.

Next, referring to FIG. 19(b), when the operating rope 3 is operated from the state where the lower beam 5 is at the lower limit position or the intermediate position to raise the lower beam 5, the cord 4 is wound on the winding tube 9 . At this time, the operating rope 3 abuts against the indoor side rope guide 12 to apply a clockwise torque to the operating unit 60, thereby driving the operating unit 60 to make a pendulum movement, thereby, the side of the protruding piece 61 of the operating panel member 6a The end rotates the movable fin 40 to press the outdoor side curtain 4. Therefore, the interval d2 during operation of the double-layer curtain 4 is greater than the interval d1 at rest.

Similarly, referring to FIG. 19(c), when the operating rope 3 is operated from the state where the lower beam 5 is located at the intermediate position or the upper limit position to lower the lower beam 5, the cord 4 wound on the winding tube 9 descends . At this time, the operating cord 3 abuts against the indoor side cord guide 13 to apply a clockwise torque to the operating unit 60, thereby driving the operating unit 60 to make a pendulum movement, thereby, the side of the protruding piece 61 of the operating panel member 6a The end rotates the movable fin 40 to press the outdoor side curtain 4. Therefore, the interval d3 during operation of the double-layer curtain 4 is greater than the interval d1 at rest.

Therefore, in the example shown in FIG. 19, during the lifting operation, the operating unit 60 is rotated by the pulling force of the operating rope 3, so that the double-layer curtain 4 moves relative to each other in a separated state without friction (or , Even if friction occurs, the friction is weakened), so there is no possibility of damage to the curtain 4 (or the possibility is reduced). In addition, when in a static state, the operating rope 3 loses tension, and the operating The unit 60 rotates in the direction in which the double-layer curtain 4 approaches by the weight of the curtain 4 and the like. Therefore, the interval between the double-layer curtains 4 can be reduced, or the double-layer curtains 4 can be closely adhered to each other, thereby increasing the distance between the double-layer curtains 4 and the like. The light-transmitting portion 4b and the light-shielding portion 4a are completely overlapped to form light-shielding properties when they are in a light-shielding state.

[Sixth Embodiment]

Next, the structure of the roller blind 1 of 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 fabric 4 is attached to the winding tube 9 and the other side is attached to the fixing portion 2c, which is provided on the outdoor end surface of the mounting frame 2. FIG. 20 is a front view showing the schematic structure of the roller blind 1 of the sixth embodiment of the present invention, and FIG. 21 is an exploded perspective view showing the schematic structure around the operating unit 60 in the roller blind 1 of the sixth embodiment of the present invention. In addition, the same reference numerals are assigned to the same constituent members as in the above-mentioned 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 fin is provided on the mounting frame 2, and the operating unit 60 A fixed rod 50 is fixed between it and the support plate 8.

As shown in Fig. 20, supporting members 2a, 2b are fixed at both ends of the mounting frame 2, and the cylindrical winding tube 9 is rotatably supported through a fixed shaft 11 extending from the supporting members 2a, 2b Between the supporting members 2a, 2b.

As in the fifth embodiment, the right end of the winding tube 9 is provided with an operating unit 60 that can be rotated relative to the winding tube 9 and the supporting members 2a and 2b. In addition, an operation pulley 10 is housed in the operation unit 60, and the loop-like operation rope 3 is hung on the operation pulley 10 and hangs down therefrom. Furthermore, the roller blind 1 is configured such that the winding tube 9 can be rotated by the operation of the operation cord 3.

As in the fifth embodiment, one side of the cord 4 is mounted on the winding tube 9, and the cord 4 is suspended and supported on the winding tube 9 in a manner that can be wound. The cord 4 hangs down from the winding tube 9 and passes as The other side of the lower beam 5, which is the function of the counterweight, is mounted on a fixed portion, which is provided on the outdoor end surface of the mounting frame 2. Moreover, in the lower end of the curtain 4 hanging down between the winding tube 9 and the fixed part A roller 15 is inserted through, and the roller 15 is rotatably supported at both ends of the lower beam 5. As a result, the cord 4 is set to be tensioned through the weight of the lower beam 5.

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

In addition, a clockwork transmission device for reducing the operating force when winding up the curtain 4 is housed at the left end of the winding tube 9, and a brake device for preventing the curtain 4 from falling due to its own weight is housed at the right end (not shown) Icon).

The curtain 4 is alternately formed with light-transmitting parts 4b for transmitting part of light and light-shielding parts 4a for shielding light in stripes, and the curtain 4 is suspended and supported in a double-layered state. Therefore, the operation of the operation rope 3 The front and rear curtains 4 are relatively moved in the vertical direction to adjust the degree of overlap between the light-transmitting portion 4b and the light-shielding portion 4a, and thereby 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. Except for the shape of the protruding piece 61 of the operating panel member 6a, the operating unit 60 of the sixth embodiment is the same as that of the fifth embodiment.

”状地朝向室外侧延伸之形状，固定杆50之一端安裝於操作板部件6a之突出片61之前端部。設置於捲繞管9與支撐部件2b之間的支撐板8被構成為：具有與操作板部件6a大致相同形狀的突出片，固定杆50之另一端安裝於該支撐板8之突出片上(參照圖20)。 The protruding piece 61 of the operation panel member 6a is formed to be approximately "

"" shape extending toward the outdoor side, 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 is configured to have A protruding piece of 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 (refer to FIG. 20).

Since the curtain 4 hangs down from the fixed part provided on the outdoor side end surface of the mounting frame 2, the relative rotation of the operating unit 60 causes the rear of the projecting piece 61 of the operating panel member 6a to extend substantially parallel to the winding tube 9 When the fixed rod 50 is displaced, the outdoor side curtain 4 is pushed by the fixed rod 50 to move it further toward the outdoor side.

Therefore, in the sixth embodiment, the same action and effect as the fifth embodiment can be produced, and the operation unit 60 is configured to enable the operation of the operation cord 3 The pendulum movement is performed in a way that the distance between the moving double curtain 4 is increased. Furthermore, the operation unit 60 is configured to make the interval during the operation of the double-layer curtain 4 larger than the interval during the static state.

In particular, in the examples of the fifth and sixth embodiments, compared with the examples of the first to fourth embodiments, there is no need to provide the support shaft 7 under the winding tube 9, so that the front and rear width of the roller blind 1 can be avoided. Get bigger. In addition, in the examples of the first to fourth embodiments, the support shaft 7 is provided on the operating plate 6 that moves the pendulum, and the operating plate 6 is relatively rotated. Therefore, the rotation angle of the operating plate 6 follows the pendulum movement. However, in the examples of the fifth and sixth embodiments, the operation unit 60 is configured to perform a pendulum movement, so that the operation interval of the double-layer curtain 4 is greater than the interval at rest, and, The rotation angle of the operating unit 60 will not increase.

More specifically, in the examples of the fifth and sixth embodiments, the movable flap 40, the fixed rod 50 and other fabric spacing adjustment members are provided, and the pendulum movement of the auxiliary operation unit 60 enables the operation of the double curtain 4 The time interval is greater than the interval at rest, so that the front and rear width of the roller blind 1 provided with the operating unit 60 for pendulum movement 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 roller blind 1 of the seventh embodiment is composed of substantially the same components as the roller blind 1 of the fifth embodiment. However, the mounting frame 2, the supporting member 2a, the rope cover 20, the movable flap 40, the operating unit 60, and the The respective shapes of the operating rope 3 and the operating pulley 10 constituted by the bead chain are different from those of the fifth embodiment.

Fig. 22 is a front view showing a schematic configuration of a roller blind of the seventh embodiment of the present invention. FIG. 23 is an exploded perspective view showing a schematic configuration around the operating unit 60 in the roller blind 1 of the seventh embodiment of the present invention. In addition, (a), (b), and (c) in FIG. 24 are diagrams for explaining the operation of the operation unit 60 in the roller blind 1 of the seventh embodiment of the present invention. In addition, the same reference numerals are assigned to the same constituent members as in the fifth embodiment.

As shown in FIG. 22, similar to the fifth embodiment, the roller blind 1 of the seventh embodiment has support members 2a, 2b fixed at both ends of the mounting frame 2, and passes through a fixed shaft 11 extending from the support members 2a, 2b. , The cylindrical winding tube 9 is rotatably supported between the supporting members 2a and 2b.

The right end of the winding tube 9 is provided with an operating unit 60 that can rotate relative to the winding tube 9 and the supporting members 2a, 2b. In addition, an operation pulley 10 is housed in the operation unit 60, and the loop-like operation rope 3 is hung on the operation pulley 10 and hangs down therefrom. Furthermore, the roller blind 1 is configured such that the winding tube 9 can be rotated by the operation of the operation cord 3. The operation cord 3 is composed of a ring-shaped bead chain composed 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 cord 4 is mounted on the winding tube 9, and the cord 4 is suspended and supported on the winding tube 9 in a windable manner. The cord 4 hangs down from the winding tube 9 and passes through a lower beam that functions as a counterweight member 5 and the other side folded back is mounted on the fixing part 2c, which is arranged on the outdoor side end surface of the mounting frame 2 located on the upper part of the winding tube 9. As shown in FIG. 24, the fixing portion 2c of this embodiment is configured to lock the fabric pressing plate 80 in the fixing portion 2c in a detachable manner, wherein the fabric pressing plate 80 can wind around the end of the curtain 4, Thus, the length of the curtain 4 can be adjusted. In addition, a roller 15 is inserted into the lower end of the curtain fabric 4 hanging down from between the winding tube 9 and the fixed portion 2c, and the roller 15 is rotatably supported at both ends of the lower beam 5. As a result, the cord 4 is set to be tensioned through the weight of the lower beam 5.

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

In addition, a clockwork transmission device for reducing the operating force when winding up the curtain 4 is housed at the left end of the winding tube 9, and a brake device for preventing the curtain 4 from falling due to its own weight is housed at the right end (not shown) Icon).

The curtain 4 is alternately formed with light-transmitting parts 4b for transmitting part of light and light-shielding parts 4a for shielding light in stripes, and the curtain 4 is suspended and supported in a double-layered state, so that the operation cord 3 is passed through This operation causes the front and rear curtains 4 to relatively move in the up and down direction, thereby adjusting the degree of overlap between the light-transmitting portion 4b and the light-shielding portion 4a, thereby adjusting the amount of light.

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, and the two operation panel members 6a and 6b are integrally formed so that the operation pulley 10 and the cord cover 20 can be sandwiched and housed inside. The operation unit 60 is provided with rope guides 12 and 13.

The rope guide 12 of the present embodiment will be described in detail as follows: the operation panel member 6b having a substantially V-shaped overall shape is provided with side pieces respectively in the front and rear direction, and the side pieces are respectively provided from the front and rear ends of the operation plate member 6b. It protrudes toward the side opposite to the operation panel member 6a along 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 respectively provided at the front and rear ends of the operation plate member 6a, and the side pieces 12c respectively protrude from the front and back ends of the operation plate member 6a in the axial direction of the fixed shaft 11 toward the side opposite to the operation plate member 6b. And, the side piece 12c can be engaged with the engaging piece 12a of the operation panel member 6b. Furthermore, 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 with the fitting convex portion 12d. Therefore, when the operation panel members 6a and 6b are integrated so that the operation pulley 10 and the cord cover 20 can be sandwiched and housed inside, the side pieces 12c of the operation panel member 6a and the engagement pieces 12a of the operation panel member 6b By engaging, the fitting convex portion 12d is fitted into 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 this embodiment导部12。 Guide 12.

In addition, the rope guide 13 of the present embodiment will be described in detail as follows: In order to constitute the rope guide 13, the operation panel member 6b is vertically formed on a surface near the lower side of the central portion in the front and rear direction of the fixed shaft 11 Longitudinal protrusions protruding from the opposite side of the plate member 6a. The surface 13a (the surface facing the operation panel member 6a) of the elongated protrusion can abut and engage with the engaging groove 13b provided on the lower surface of the operation panel member 6a in the front and rear direction central portion. Therefore, when the operation panel members 6a, 6b are integrated in such a way that the operation pulley 10 and the cord cover 20 can be sandwiched and housed inside, the operation panel member 6b The surface 13a of the upper longitudinal protrusion is engaged with the engaging groove 13b on the operation panel member 6a, thereby constituting the cord guide 13 of this embodiment. In addition, a threaded hole 13c is formed in the engagement groove 13b of the operating panel member 6a, and the same threaded hole (not shown) as the threaded hole 13c is also provided on the surface 13a of the elongated protrusion of the operating panel member 6b. Furthermore, the operation panel members 6 a and 6 b can be integrally fixed with the mounting screw 70 via the above-mentioned screw hole, thereby constituting the operation unit 60. In addition, instead of fixing the lower ends of the operation panel members 6a and 6b with the mounting screws 70, it may be formed into a form in which the lower ends of the operation panel members 6a and 6b are fitted. Alternatively, it is also possible to stabilize the integration of the operation panel members 6a and 6b by optimizing the shapes of the fitting convex portion 12d and the fitting receiving portion 12b or increasing the number thereof.

The looped operation rope 3 hung on the operation pulley 10 hangs downward under the guidance of the rope guides 12 and 13. In particular, two rope guides 12 of the seventh embodiment are provided on the front and rear sides of the rope guide 13 so as to substantially sandwich the rope guide 13. Between the front rope guide 12 and the rope guide 13, And between the rear rope guide portion 12 and the rope guide portion 13, a guide path slightly larger than the outer shape of the ball portion 3a of the operation rope 3 is formed, and one side (front side) of the looped operation rope 3 hanging down from the operation pulley 10 The other side (rear side) of the looped operating rope 3 hanging down from the operating pulley 10 passes through between the rope guide portion 12 (front side) and the rope guide portion 13 and hangs down after being guided, and is guided from the rope guide portion 12 (Rear side) pass between the cord guide 13 and hang down (refer to FIG. 24).

In addition, a guide path between the front rope guide 12 and the rope guide 13 and between the rear rope guide 12 and the rope guide 13 is slightly larger than the outer shape of the ball portion 3a of the operating rope 3 is formed as follows: At least two ball portions 3a connected at a predetermined interval always abut any one of the rope guide portions 12 and 13. With such a configuration, it is possible to suppress shaking in the operation unit 60 when the operation cord 3 is operated, and it is possible to reduce the operation sound generated by interference between the ball portion 3a and the cord guides 12 and 13.

As shown in FIG. 23, the cord cover 20 mainly includes a flange-shaped main body with 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 is It is configured to prevent the operation rope 3 hung on the operation pulley 10 from falling off, and the rope cover 20 is fixed so as not to be able to support The part 2a rotates. In this example, the fixed shaft 11 is configured in a square rod shape. By inserting and engaging the fixed shaft 11 in the insertion hole 20d, the cord cover 20 can be fixed so as not to rotate relative to the support member 2a. However, as long as it is configured to prevent the operation rope 3 hung on the operation pulley 10 from slipping off the operation pulley 10, the rope cover 20 may take any form.

The operating pulley 10 is provided with a through hole, and the fixed shaft 11 extending from the supporting member 2a serves as a rotating shaft. In addition, a protrusion (not shown) protruding in a cylindrical shape is formed on the right end side of the operating pulley 10, and by engaging the protrusion with the engaging groove 20c provided around the insertion hole 20d of the cord cover 20, Therefore, the operating pulley 10 is supported so as not to rotate with respect to the rope cover 20 and the supporting member 2a. On the left end side of the operating pulley 10, a fitting portion 25 that is fitted to the inner peripheral surface of the right end of the winding pipe 9 is provided via a flange having a diameter larger than the outer peripheral portion of the hanging operating rope 3. Therefore, the winding tube 9 is supported so as to be able to rotate with the rotation of the operating pulley 10. In addition, the left end of the operating pulley 10 meshes with a gear mechanism (not shown) connected to a braking device housed in the winding tube 9. If speed increase or reduction is not required, the gear mechanism may be omitted, and the winding tube 9 and the operating pulley 10 may be directly connected.

On the other hand, a cylindrical protrusion (not shown) is formed on the right end side of the cord cover 20, and a circular hole-shaped rotation receiving portion 23a having a diameter larger than the outer diameter of the protrusion is provided on the operation plate member 6a , To engage with the protrusion. Furthermore, the operation plate member 6b is provided with a semicircular hole-shaped rotation receiving portion 23b having a diameter larger than the outer diameter of the winding tube 9. In addition, the upper protruding piece on the right end side of the cord cover 20 fixed to the support member 2a is provided with a recess 20a, and a substantially inverted trapezoidal protruding piece 61 is provided above the operating 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 operating unit 60, and the bottom surface of the protruding piece 61 is supported along the top surface of the rope cover 20, whereby the operating unit 60 is relative to the operating pulley 10 and the winding The relative rotation of the tube 9 becomes stable. Therefore, the operation unit 60 is supported to be able to rotate relative to the operation pulley 10 and the winding tube 9.

Furthermore, in a state where the two operation panel members 6a, 6b are integrated so that the operation pulley 10 and the cord cover 20 can be sandwiched and housed inside, the projecting piece 61 is engaged with the recessed portion so as to rotate within a predetermined range. In 20a. In addition, on the left end side of the cord cover 20 that can house the operation panel member 6b inside The inner wall of the upper protruding piece is provided with a stepped portion 20b that restricts the relative rotation of the operating unit 60 within a certain angle. That is, when the operation unit 60 is relatively rotated, the stepped portion 20b can abut 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 operating unit 60 is restricted within a certain angle through the abutment between the edge portion 26 and the step portion 20b.

On the other hand, a substantially fin-shaped movable fin 40 is hung on the outdoor side end of the bottom surface of the mounting frame 2 whose both ends are fixed to the supporting members 2a and 2b, and the movable fin 40 can rotate about its base axis.

The movable fin 40 of the seventh embodiment is configured to have a length longer than that of the fifth embodiment to block the gap between the mounting frame 2 and the winding tube 9, and a part of the inner side thereof is cut off, thereby Reduce weight while maintaining strength. The movable fin 40 configured with the above-mentioned length can further shield the external light from the gap between the mounting frame 2 and the winding tube 9, and because of its reduced weight, the movable fin 40 during the pendulum movement can be reduced. The load generated by the displacement. Furthermore, since the curtain 4 hangs down from the fixed portion 2c provided on the outdoor side end surface of the mounting frame 2, when the relative rotation of the operation unit 60 causes the side end portion of the protruding piece 61 of the operation panel member 6a to press the movable wing In the case of the sheet 40, the movable fin 40 rotates, so that the outdoor side curtain 4 is further moved toward the outdoor side.

The operation unit 60 configured in this way is configured to perform a pendulum movement so that the distance between the double-layer curtains 4 that can move relatively is increased when the operation cord 3 is operated. Furthermore, the operation unit 60 is configured to make the interval during the operation of the double-layer curtain 4 larger than the interval during the static state.

Hereinafter, the operation of the operation unit 60 will be described in more detail with reference to FIG. 24. First, referring to Figure 24(a), the operating unit 60 is supported to be able to rotate relative to the operating pulley 10 (and the winding tube 9). When the lower beam 5 is in a stationary state at the lower limit position, the middle position, and the upper limit position, respectively, The torque in the direction in which the front and rear curtains 4 are brought into close contact is applied to the operation unit 60 through its own weight (the weight of the curtain 4, the lower beam 5, etc.). Thereby, the operation cord 3 hangs down based on the cord guides 12 and 13.

In the static state where the lower beam 5 is at the lower limit position, or the lower beam 5 is at the intermediate position or the upper limit position and the curtain 4 is wound on the winding tube 9 with a prescribed roll diameter, the double-layer curtain 4 is close to each other Or at the close position (the interval between the double curtain 4 is d1), the interval between the double curtain 4 is constant. Therefore, the light-transmitting portion 4b and the light-shielding portion 4a of the double-layer curtain 4 can be shifted to form a semi-transmissive state, or the light-transmitting portion 4b of the curtain 4 and the light-shielding portion 4a can be completely overlapped to form a light-shielding state, which can particularly improve The light-shielding property in the light-shielding state. In particular, the fixing portion 2c of the mounting frame 2 of the present embodiment is configured to lock the fabric pressing plate 80 in the fixing portion 2c in a removable and detachable manner, and the fabric pressing plate 80 can wind the end of the cord 4, As a result, the length of the curtain 4 can be adjusted. Therefore, it is easy to adjust the length of the curtain 4 so that, for example, the lower beam 5 is located at the lower limit position to become a shielding state. In addition, the movable fin 40 having a longer length can further shield the external light entering from the gap between the mounting frame 2 and the winding tube 9.

Next, referring to FIG. 24(b), when the operating rope 3 is operated from the state where the lower beam 5 is located at the lower limit position or the intermediate position to raise the lower beam 5, the cord 4 is wound on the winding tube 9 . At this time, the operating rope 3 abuts against the indoor side rope guide 12 to apply a clockwise torque to the operating unit 60, thereby driving the operating unit 60 to make a pendulum movement, thereby, the side of the protruding piece 61 of the operating panel member 6a The end rotates the movable fin 40 to press the outdoor side curtain 4. Therefore, the interval d2 during operation of the double-layer curtain 4 is greater than the interval d1 at rest. Therefore, during the lifting operation, the double-layer curtain 4 moves relatively without friction, or friction occurs only during a part of the lifting process, or the friction is weakened, so there is no possibility of damaging the curtain 4. In addition, a guide path between the front rope guide 12 and the rope guide 13 and between the rear rope guide 12 and the rope guide 13 is slightly larger than the outer shape of the ball portion 3a of the operating rope 3 is formed as follows: At least two ball portions 3a connected at a predetermined distance are always in contact with any one of the rope guide portions 12, 13. Therefore, it is possible to prevent the operation rope 3 from shaking in the operation unit 60 when the operation rope 3 is operated, and it is possible to reduce Operation sound generated by interference between the rope guides 12 and 13.

Similarly, referring to FIG. 24(c), when the operating rope 3 is operated from the state where the lower beam 5 is located at the intermediate position or the upper limit position and the lower beam 5 is lowered, the curtain 4 wound on the winding tube 9 lowers . At this time, the operating cord 3 abuts against the indoor side cord guide 13 to apply a clockwise torque to the operating unit 60, thereby driving the operating unit 60 to make a pendulum movement, thereby, the side of the protruding piece 61 of the operating panel member 6a The end rotates the movable fin 40 to press the outdoor side curtain 4. Therefore, the interval d3 during operation of the double-layer curtain 4 is greater than the interval d1 at rest. Therefore, during the lowering operation, the double-layer curtain 4 moves relatively without friction, or friction occurs only during a part of the lifting process, or the friction is weakened, so there is no possibility of damaging the curtain 4. In addition, even if friction occurs locally when the fabric winding thickness of the cord fabric 4 is close to the upper limit, the friction force tends to weaken.

Therefore, in the roller blind 1 of the seventh embodiment, during the lifting operation, the operating unit 60 is rotated by the pulling force of the operating cord 3, so that the double-layer curtains 4 are separated from each other and move relatively without friction. (Or, even if friction occurs, the friction is weakened), so there is no possibility of damage to the cord 4 (or the possibility is reduced). In addition, when in a stationary state, the operating rope 3 loses tension, and the operating unit 60 rotates in the direction of the double-layer curtain 4 approaching by the weight of the curtain 4 and the like. Therefore, the interval between the double-layer curtain 4 can be reduced or The double-layer curtain fabrics 4 are in close contact with each other, so that the light-shielding property when the light-transmitting portion 4b of the curtain fabric 4 and the light-shielding portion 4a are completely overlapped to form a light-shielding state can be improved.

In addition, in the roller blind 1 of the seventh embodiment, the fixing portion 2c of the mounting frame 2 is configured to detachably lock the fabric pressing plate 80 capable of adjusting the length of the curtain 4 by winding to the fixing In the portion 2c, therefore, it is easy to adjust the length of the curtain 4 so as to be in a shielding state when, for example, the lower beam 5 is located at the lower limit position.

In addition, in the roller blind 1 of the seventh embodiment, the movable fin 40 is configured to have a length sufficient to block the gap between the mounting frame 2 and the winding tube 9. Therefore, it is possible to further shield from the mounting frame 2 and the winding tube 9. External light from the gap between the tubes 9.

In addition, in the roller blind 1 of the seventh embodiment, between the front cord guide 12 and the cord guide 13, and between the rear cord guide 12 and the cord guide 13, at least two The ball part 3a always abuts against any one of the rope guide parts 12 and 13 to be guided, and therefore, it is possible to suppress the operation of the rope 3 It shakes in the operation unit 60 during operation, and the operation sound generated by the interference between the ball portion 3a and the rope guide portions 12, 13 can be reduced.

In the above, the present invention has been described with examples of specific embodiments, but the present invention is not limited to the examples of the above-mentioned embodiments, and various modifications can be made without departing from the scope of the technical idea. For example, in each embodiment, the state of the indoor side and the outdoor side is determined and described, but the indoor side and the outdoor side may be reversed.

In addition, in order to reliably separate the screen 4 during operation, a biasing member such as a spring that assists the movement of the pendulum moving in the separation direction of the screen 4 may be further provided.

(Industrial availability)

According to the roller blind 1 involved in the present invention, during the lifting operation, the double-layer curtain 4 moves relatively without friction, or friction occurs only in a part of the lifting process, or the friction is weakened. Therefore, there is no damaged curtain 4 When in a static state, the interval between the double-layer curtains 4 can be reduced, or the double-layer curtains 4 can be closely attached to each other, especially when the curtain 4 has a light-transmitting part 4b and a light-shielding part 4a, it can improve the use of Since the light-transmitting portion 4b and the light-shielding portion 4a are completely overlapped to form a light-shielding state, they can be effectively used in applications such as blinds using double-layer curtains.

1: Roller blind

2: Mounting frame

2a: Supporting parts

2b: Supporting parts

3: Operation rope

4: curtain

4a: Shading part of curtain

4b: Light transmitting part of the curtain

5: Lower beam

6: Operation panel

7: Support shaft

8: Support plate

9: Winding tube

10: Operation pulley

11: fixed shaft

12: Rope guide

13: Rope guide

20: Rope cover

Claims (15)

A roller blind capable of relatively moving a double-layer curtain in an up-and-down direction, the roller blind is characterized in that the roller blind is provided with an operating mechanism for performing an operation that allows the double-layer curtain to relatively move in the up-and-down direction, the The operating mechanism is provided with an operating unit that always makes a pendulum movement when the double-layer curtain is relatively movable in the vertical direction, and the double-layered fabric is configured to be relatively movable with the pendulum movement of the operating unit. The interval between the layers of curtains is increased. When the operation of the pendulum movement of the operating unit is not performed, the double-layer curtains are always made closer or closer to each other than the interval between the double-layer curtains increased during the operation The operating part of the pendulum movement in this way. According to the first item of the scope of patent application, the operating mechanism performs pendulum movement in such a way that the interval during operation of the double-layer curtain is greater than the interval during rest. The roller blind as described in item 1 or 2 of the scope of the patent application, wherein, when the operation is stopped, the operating mechanism operates in a manner that the double-layer curtain is pressed tightly under the action of the weight of the double-layer curtain Pendulum movement. According to the roller blind described in item 1 or 2 of the scope of patent application, the double-layer curtain is alternately formed with light-transmitting parts that allow partial light to pass through and light-shielding parts that block light. The roller blind described in item 1 or 2 of the scope of the patent application, wherein the double-layer curtain is formed by folding a piece of curtain back, the roller blind is provided with a winding tube and a support shaft, and one side of the curtain is mounted on the On the winding tube, and the cord is suspended and supported on the winding tube in a manner capable of winding, and the other side of the cord that hangs down from the winding tube and is folded back through the counterweight is installed and supported On the support shaft, the operating mechanism performs a pendulum movement in such a way 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. As described in item 5 of the scope of patent application, the operating mechanism is configured to have a force point, which is engaged with an operating cord that operates the opening and closing action of the double-layer curtain, and is transparent During the operation, the pulling force of the operating rope exerts a force on the force point, so that the operating mechanism and the supporting shaft rotate together in the direction of separating the double-layer curtain. According to the roller blind described in item 6 of the scope of patent application, the support shaft is arranged below the winding tube and close to the indoor side. The roller blind described in item 1 or 2 of the scope of patent application, wherein the double-layer curtain is formed by folding a piece of curtain back, the roller blind is provided with a winding tube and a fixing member, and one side of the curtain is installed on the On the winding tube, and the cord is suspended and supported on the winding tube in a manner capable of winding, and the other side of the cord that hangs down from the winding tube and is folded back through the counterweight passes through the The fixing member is installed and supported at a position above the winding tube, the operating mechanism includes the operating unit and a fabric interval adjusting member, and the operating unit is configured to always act as a pendulum when the operation is performed through an operating cord Movement, the fabric interval adjusting member increases the interval between the double-layer curtains with the movement of the pendulum, and always makes the interval between the double-layer curtains compared to the The increased distance between the double-layer curtains during operation moves closer to or close to each other relative to the other side of the curtain. The roller blind described in item 8 of the scope of patent application, wherein the fabric interval adjusting member is provided with movable fins, and the movable fins follow the pendulum movement of the operation unit to make the interval between the double-layer curtains The curtain is pushed in an enlarged manner, and the movable fin is rotatably suspended on the fixed member through its base shaft. According to the roller blind described in item 9 of the scope of patent application, the movable fin has a length sufficient to close the gap between the fixed member and the winding tube. The roller blind described in item 8 of the scope of patent application, wherein the fabric interval adjusting member is provided with a fixed rod, and the fixed rod increases the interval of the double-layer curtain with the pendulum movement of the operating unit In this way, the curtain is pressed, and the fixing rod is fixed to a part of the operation unit. As described in item 8 of the scope of patent application, the operating unit is provided with a rotation restricting member that restricts the rotation range of the pendulum movement. According to the rolling blind described in claim 8, wherein the operation unit has a rope guide part that guides the hanging of the operation rope and supports the operation rope in a pendulum motion. The roller blind described in item 13 of the scope of patent application, wherein the operating mechanism has an operating rope composed of a bead chain formed by connecting a plurality of ball parts, and the rope guide part is configured to be connected at a predetermined interval At least two of the ball portions always abut the rope guide portion to be guided. As described in item 8 of the scope of patent application, the fixing member has a fabric pressing plate and a fixing portion, and the fabric pressing plate can wind the end of the curtain so as to adjust the length of the curtain. The pressing plate is locked in the fixing part in a removable manner.

Images