JP7128011B2 - Shielding device - Google Patents

Description

The present invention relates to shielding materials and shielding devices.

Pleated screens, honeycomb screens, and horizontal blinds are known as examples of shielding devices that raise and lower shielding materials. Pleated screens and honeycomb screens have a screen as a shielding material. The load of the screen located at the highest position is transmitted to the lifting cords that suspend the screen. When the screen is gradually lowered, the load of the lowered screen is transferred from the lifting cords to the head box or the like. Horizontal blinds are provided with multiple levels of slats as shielding material. When the slats of each stage are lowered, the load of the lowered slats is transferred from the lifting cords to the ladder cords and the like.

The rotational torque of the drive shaft for raising and lowering the shielding material decreases as the shielding material is lowered and the load on the shielding material decreases. Conversely, the rotational torque on the drive shaft increases with increasing shield load as the shield is raised. Such changes in the rotational torque of the drive shaft force the user who drives the drive shaft to adjust the operating force. Therefore, in the shielding device described above, we propose a shielding device that is equipped with a constant load unit that preliminarily applies a rotational torque to the drive shaft that approximately balances the load of the shielding material, and that can be manually operated to enable automatic lifting and lowering of the shielding material. (See Patent Document 1, for example).

JP 2015-218567 A

In the shielding device described above, the lever for performing the manual operation is positioned forward of the screen in the front-rear direction. Therefore, an operation force is applied from the front of the screen so as to pull the screen downward and forward or push the screen upward and rearward. In other words, since an operation force is applied in a direction different from the original direction of raising and lowering the screen, it is desired that such an operation be made smoother in the light shielding device described above.
An object of the present invention is to provide a shielding material and a shielding device that enable smooth operation.

A shielding material for solving the above problems is a shielding material that is laminated on the rail by operating the rail, wherein the rail is operated at a position spaced downward from the lower end of the shielding material, It was arranged so as to overlap with the operating position in the front-rear direction of the shielding material.
A shielding device for solving the above-mentioned problems is a shielding device for raising and lowering a shielding material by a manual operation on an operation part of a rail, wherein the operation part is positioned below the shielding material in the vertical direction of the shielding material. and overlaps the shielding material in the longitudinal direction of the shielding material.

The shielding material may be arranged such that the center of gravity of the shielding material is included in the operating position in the front-rear direction of the shielding material.
In the shielding material, the operating position in the front-rear direction of the shielding material may be within a range occupied by the shielding material.
In the shielding material, the direction in which the shielding material is laminated may be the width direction of the rail.
In the shielding material, the rail includes an operation piece extending in the front-rear direction of the shielding material at the operation position, and the center of the shielding material in the front-rear direction is closer to the center of the operation piece in the front-rear direction. May be positioned forward.

The shielding member may include an engaging portion that engages with the operation aid, and the center of the shielding member in the front-rear direction may be located forward of the engaging portion in the front-rear direction.
In the shielding device described above, the operation portion may be positioned below the center of the rail in the vertical direction of the shielding material.

The figure which shows the front structure of the pleated screen which is an example of a shielding device, and a side structure. The perspective view which shows the structure of a bottom handle. The perspective view which shows the structure of an intermediate handle. The side view which shows the process which attaches a bottom handle to a bottom rail. FIG. 4 is a side view showing the bottom handle attached to the bottom rail; The side view which shows the process which attaches an intermediate handle to an intermediate rail. FIG. 4 is a side view showing an intermediate handle attached to an intermediate rail; The side view which shows the positional relationship of a pleated screen and an operating handle. The side view which shows the bottom handle of a modification. The side view which shows the bottom handle of a modification. FIG. 4 is a diagram showing a front structure and a side structure of a honeycomb screen that is another example of the shielding device;

One embodiment of the shielding device is described with reference to FIGS.
As shown in FIG. 1, the pleated screen includes an upper screen 10A, which is an example of a shielding material, and a lower screen 20A, which is an example of a shielding material. The pleated screen also includes a headbox 100, an intermediate rail 11P, and a bottom rail 21P.

Each of the screens 10A and 20A is bent vertically in a zigzag shape. The upper end of the upper screen 10A is connected to the headbox 100, and the lower end of the upper screen 10A is connected to the intermediate rail 11P. The upper screen 10A is stacked on the intermediate rail 11P by manipulating the intermediate rail 11P. The upper end of the lower screen 20A is connected to the intermediate rail 11P, and the lower end of the lower screen 20A is connected to the bottom rail 21P. The lower screen 20A is stacked on the bottom rail 21P by manipulating the bottom rail 21P.

The intermediate handle 12A is attached to the center of the intermediate rail 11P in the extending direction (horizontal direction). The bottom handle 22A is an example of an operating portion, and is attached to the center of the bottom rail 21P in the extending direction (horizontal direction). The intermediate rail 11P has a rectangular shape whose width direction is the front-rear direction and which extends in the front-rear direction when viewed from the left-right direction. The bottom rail 21P has a rectangular shape whose width direction is the vertical direction and which extends in the front-rear direction when viewed from the left-right direction.

The headbox 100 includes two drive shafts 101 (one is shown in FIG. 1) arranged in the front-rear direction, two winding units 102, two gear units 103, and two constant load units 104. and Each drive shaft 101 has a polygonal columnar shape extending in the left-right direction.

Each winding unit 102 winds and unwinds the lifting cord 23 for each of the rails 11P and 21P. Each of the lifting cords 13 and 23 is an example of a drive transmission member, and passes through the rear end portion of each of the screens 10A and 20A in the front-rear direction (passage at the fold on the rear side). The lifting cord 23 is invisible from the front of each screen 10A, 20A. The bottom rail 21P is positioned directly below the lifting cords 13,23.

Each gear unit 103 changes the speed of rotation of the drive shaft 101 and transmits it to the constant load unit 104 . A constant load unit 104 outputs a constant load to the gear unit 103 .

The screens 10A and 20A and the rails 11P and 21P apply rotational torque to the drive shaft 101 through the lifting cords 13 and 23. As shown in FIG. Rotational torque due to this load acts on each drive shaft 101 in the unwinding direction. On the other hand, the rotational torque output by the constant load unit 104 acts on each drive shaft 101 in the winding direction. Then, the rotational torques of the drive shafts 101 are balanced, and each drive shaft 101 does not rotate due to the rotational torque due to the load and remains stationary.

On the other hand, when the rails 11P and 21P are lifted, the rotational torque due to the load temporarily decreases. As a result, the rotational torque generated by the constant load unit 104 is relatively strengthened, and the lifting cords 13 and 23 are wound up. When the operating force is removed from the rails 11P and 21P, the rotational torque of the drive shaft 101 is balanced again and the rails 11P and 21P stop rising.

Incidentally, when the rails 11P and 21P are pulled down, the lifting cords 13 and 23 are unwound. When the operating force is removed from the rails 11P and 21P, the rotational torques are balanced again and the rails 11P and 21P stop descending. That is, the rails 11P and 21P move according to the guidance operation, and the rails 11P and 21P stop when the guidance operation is completed.

As shown in FIG. 2, the bottom handle 22A includes a handle body 221 and a manual operation lever 222, which is an example of an operation piece. The bottom handle 22A also includes a pair of left and right pole supports 223, a pair of left and right first fixed claws 224, and a pair of left and right second fixed claws 225. As shown in FIG.

The handle body 221 has a shape that follows the front surface, lower surface, and rear surface of the bottom rail 21P. For example, the handle body 221 has a U shape when viewed from the left-right direction. A front upper end of the handle body 221 is integrated with a manual operation lever 222 and a first fixed claw 224 .

The rear surface of the handle body 221 is provided with a pair of left and right extending pieces 225A. Each extension piece 225A has a cantilever shape projecting upward. The upper end of each extension piece 225A is integrated with the second fixed claw 225. As shown in FIG. The front-rear width 2WB of the handle body 221 is less than half the front-rear width of each of the screens 10A and 20A, and is sufficiently smaller than the front-rear width of each of the screens 10A and 20A.

The pull operation lever 222 has a plate shape that protrudes forward from the handle body 221 over the entire width of the handle body 221 in the left-right direction. The position of the manual operation lever 222 is the position for operating the bottom rail 21P. The pull operation lever 222 has a hook insertion hole 22H penetrating vertically. The hook insertion hole 22H is an example of an engaging portion that engages with the operation aid. The hook insertion hole 22H is an elongated hole extending in the left-right direction, and is positioned in the center of the pulling operation lever 222 in the left-right direction.

The upper surface of the manual operation lever 222 is provided with a pair of left and right hook stops 22T. A pair of hook stops 22T are positioned forward of the hook insertion holes 22H. The pair of hook stops 22T are protrusions extending in the front-rear direction, and are arranged side by side in the left-right direction with a predetermined interval.

The pole supports 223 are positioned at both left and right ends of the handle body 221 and protrude forward from the handle body 221 . The pole support 223 is positioned below the manual operation lever 222 and has a support surface that is a flat upper end surface. The gap between the pair of pole supports 223 and the hook insertion hole 22H face each other in the vertical direction.

The support surface of the pole support 223 is provided with a pole stop 226 projecting towards the manual operating lever 222 . A pole stop 227 is provided at a position facing the pole stop 226 on the lower surface of the manual operation lever 222 . A space between the manual operation lever 222 and the pair of left and right pole supports 223 is a holding space in which the operation pole 30 is held.

The first fixed claw 224 has a cantilever shape projecting rearward from the manual operation lever 222 . The pair of first fixed claws 224 are positioned at both ends of the manual operation lever 222 in the left-right direction. The second fixed claw 225 protrudes forward from the upper end of the extension piece 225A. The pair of second fixed claws 225 are positioned at both ends of the handle body 221 in the left-right direction.

As shown in FIG. 3, the intermediate handle 12A has a handle body 121 and a hand-pull operating lever 122. As shown in FIG. The intermediate handle 12A also includes a pair of left and right pole supports 123, a pair of left and right fixed claws 124, and a pair of left and right fixed claws 125. As shown in FIG.

The handle body 121 has a shape that follows the front, upper and lower surfaces of the intermediate rail 11P. For example, the handle body 121 has an inverted U shape when viewed from the left-right direction. The width of the handle body 121 in the front-rear direction is sufficiently smaller than the width in the front-rear direction of the intermediate rail 11P. A front upper end of the handle body 121 is integrated with a manual operation lever 122 and a fixed claw 124 . A rear lower end of the handle body 121 is integrated with a fixed claw 125 .

The manual operation lever 122 has a plate shape that protrudes forward from the handle body 121 over the entire width of the handle body 121 in the left-right direction. The pull operation lever 122 has a hook insertion hole 12H penetrating vertically. The hook insertion hole 12H is an elongated hole extending in the left-right direction, and is positioned in the center of the pulling operation lever 122 in the left-right direction. The upper surface of the manual operation lever 122 is provided with a pair of left and right hook stops 12T. A pair of hook stoppers 12T are positioned forward of the hook insertion holes 12H. The pair of hook stops 12T are protrusions extending in the front-rear direction, and are arranged side by side in the left-right direction at a predetermined interval.

The pole supports 123 are positioned at both left and right ends of the handle body 121 and protrude forward from the handle body 121 . The pole support 123 is positioned below the manual operation lever 122 and has a support surface that is a flat upper end surface. The gap between the pair of pole supports 123 and the hook insertion hole 12H face each other in the vertical direction.

The support surface of the pole support 123 is provided with a pole stop 126 protruding towards the manual operating lever 122 . A pole stop 127 is provided at a position facing the pole stop 126 on the lower surface of the manual operation lever 122 . A space between the manual operation lever 122 and the pair of left and right pole supports 123 is a holding space in which the operation pole 30 is held.

The fixed claw 124 has a cantilever shape projecting rearward from the manual operation lever 122 . A pair of fixed claws 124 are positioned at both ends of the manual operation lever 222 in the left-right direction. The fixed claw 125 protrudes upward from the rear end of the handle body 121 . A pair of fixed claws 125 are positioned at both ends of the handle body 121 in the left-right direction.

As shown in FIG. 4, when the bottom handle 22A is attached to the bottom rail 21P, first, the pair of left and right first fixed claws 224 are hooked on the locking piece 21A of the front cover of the bottom rail 21P. Next, the front end of the manual operation lever 222 is pushed down so that the pair of left and right second fixed claws 225 cover the upper surface of the bottom rail 21P from behind. For example, the push-down of the manual operation lever 222 is allowed by pushing the cloth presser 21B of the lower screen 20A on the bottom rail 21P.

As shown in FIG. 5, as the manual operation lever 222 is further pushed down, the second fixed claw 225 is hooked to the bottom rail 21P while the first fixed claw 224 is hooked to the bottom rail 21P. Thereby, the bottom handle 22A is attached to the bottom rail 21P so that the bottom handle 22A wraps the bottom rail 21P from below and from the rear. In front of the bottom rail 21P, a holding space sandwiched between the manual operation lever 222 (pole stop 227) and the pole support 223 (pole stop 226) is separated by the bottom handle 22A.

As shown in FIG. 6, when the intermediate handle 12A is attached to the intermediate rail 11P, first, the intermediate rail 11P is inserted between the first fixed claw 124 and the second fixed claw 125 from the front. At this time, the bottom handle 22A is deformed so that the distance between the first fixed claw 124 and the second fixed claw 125 widens, and the insertion of the intermediate rail 11P proceeds.

As shown in FIG. 7, as the insertion of the intermediate rail 11P progresses, the first fixed claw 124 is hooked by the locking piece 11A of the intermediate rail 11P, and the second fixed claw 125 is engaged with the locking piece of the intermediate rail 11P. Hooked on 11C. Thereby, the intermediate handle 12A is attached to the intermediate rail 11P so that the intermediate handle 12A wraps the intermediate rail 11P from the front. As a result, a holding space sandwiched between the manual operation lever 122 (pole stop 127) and the pole support 123 (pole stop 126) is separated by the intermediate handle 12A on the front side of the intermediate rail 11P.

[Operation handle action]
As an example of the guiding operation for the bottom rail 21P, an operation for pulling down the bottom rail 21P from a state in which the screen 20A is stacked on the bottom rail 21P and the bottom rail 21P is pulled up to the uppermost position will be described.

As shown in FIG. 8 , first, the hook of the operation pole 30 is inserted through the hook insertion hole 22</b>H, and the operation pole 30 is suspended from the manual operation lever 222 . Next, an operation force for pulling down the lower screen 20A is transmitted from the operation pole 30 to the lifting cord 23 through the manual operation lever 222 and the bottom rail 21P. In addition, the manual operation lever 222 is positioned below the center of the bottom rail 21P in the vertical direction.

At this time, as indicated by the longitudinal coordinate axis in FIG. 8, the lower screen 20A occupies a shielding range 20W in the longitudinal direction. The front end C0 of the guide operating lever 222 is located below the lower screen 20A and is included in the shielding range 20W in the front-rear direction. Therefore, the operating force applied to the manual operation lever 222 acts in substantially the same direction as the load on the lower screen 20A. As a result, the operating force applied to the manual operation lever 222 does not act to pull the lower screen 20A downward and forward, but smoothly acts to pull the lower screen 20A downward.

The bottom rail 21</b>P has a vertically extending rectangular cross-section and is suspended directly below the lifting cord 23 . The center of gravity of the bottom rail 21P is substantially equal to the rear end portion of the lower screen 20A in the front-rear direction, and positioned behind the center C2 of the lower screen 20A. The center C2 of the lower screen 20A is the center in the front-rear direction and the center of gravity of the lower screen 20A. Further, since the bottom rail 21P has a shape extending in the vertical direction, the distance between the lifting cord 23 and the manual operation lever 222 can be further shortened in the front-rear direction compared to a shape in which the bottom rail 21P extends in the left-right direction. . Therefore, in the bottom rail 21P, the position where the operating force is transmitted and the position supported by the lifting cord 23 can be brought closer in the front-rear direction.

Note that the center C2 of the lower screen 20A in the front-rear direction is behind the center C1 of the head box 100 in the front-rear direction. Further, the position of the lifting cord 23 in the front-rear direction is rearward of the center C2 of the lower screen 20A, and at the rear end of the lower screen 20A (passage SB at the fold on the rear side of the lower screen 20A). be. That is, the lifting cord 23 is located behind the center C1 of the head box 100 and behind the center C2 of the lower screen 20A in the front-rear direction.

Here, the position of the manual operation lever 222 includes the center C2 of the lower screen 20A in the front-rear direction. Further, the area around the hook insertion hole 22H is a portion of the pulling operation lever 222 to which the operation force from the operation pole 30 is transmitted. The hook insertion hole 22H is located behind the center C2 of the lower screen 20A or, like the lifting cord 23, the center C2 of the lower screen 20A in the front-rear direction. That is, both the position of the hook insertion hole 22H and the position of the lifting cord 23 are located behind the center C2. Therefore, in the bottom rail 21P, the position where the operating force is transmitted and the position supported by the lifting cord 23 can be brought closer in the front-rear direction, and the operating force can be applied more smoothly. Become.

The operation pole 30 used for the manual operation is pushed from the front of the bottom rail 21P toward the holding space so that the extension direction of the operation pole 30 and the extension direction of the bottom rail 21P match. . The pushed operation pole 30 is held by the bottom handle 22A in a posture supported from below by a pair of left and right pole supports 223 .

A support surface of the pole support 223 is in surface contact with one side surface of the hexagonal prism-shaped operation pole 30 , thereby stabilizing the posture of the operation pole 30 . Also, the pole stops 226 and 227 facing each other in the vertical direction abut against the operation pole 30, thereby preventing the operation pole from falling out of the holding space. Then, the operation pole 30 is horizontally placed in front of the bottom rail 21P so as to be visually recognizable as a posture at the time of non-operation.

According to the above embodiment, the following effects are obtained.
(1) Since the manual operation lever 222 is positioned below the lower screen 20 and overlaps the shielding range 20W in the front-rear direction, the operating force for pulling down the manual operation lever 222 directs the lower screen 20A downward and forward. The lower screen 20A does not act to pull it out, but acts to pull down the lower screen 20A. Therefore, it is possible to smoothly apply the operating force along the direction in which the lifting cord 23 is suspended.

(2) Furthermore, since the manual operation lever 222 is included in the shielding range 20W in the front-rear direction, it is possible to further enhance the effect according to the above (1).
(3) Since the bottom rail 21P has a rectangular cross section extending in the vertical direction, it is possible to dispose the manual operation lever 222 within the shielding range 20W, that is, to embody the configuration according to the above (2). easier.

(4) Further, the distance between the lifting cord 23 and the manual operation lever 222 can be shortened in the front-rear direction. It is possible to pull down the lower screen 20A while substantially maintaining the posture of the bottom rail 21P.

(5) Further, the manual operation lever 222 is positioned below the center of the bottom rail 21P in the vertical direction. Therefore, on the premise that the distance between the manual operation lever 222 and the lifting cord 23 in the front-rear direction is the same, the manual operation lever 222 is pulled down while the manual operation lever 222 is positioned directly below the lifting cord 23. Rotation of the bottom rail 21P around the lower end of 23 can be suppressed. As a result, it is possible to further enhance the effect according to the above (4).

(6) Since the hook insertion hole 22H is located behind the center C2 of the lower screen 20A in the front-rear direction, the position where the operating force is transmitted and the position where the lifting cord 23 supports the bottom rail 21P are It is possible to bring them even closer in the front-rear direction. Therefore, it is possible to further enhance the effect according to the above (4).

(7) Since the operation pole 30 for guidance operation is held by each handle 12A, 22A in a posture different from that during non-operation, the operation pole 30 can be removed from each handle 12A, 22A when performing guidance operation. The operation pole 30 is held by each of the handles 12A and 22A when the manual operation is completed. As a result, each rail 11P, 21P to be operated can be set to the position of the operation pole 30 before, during, or after the guidance operation, so that the operation pole 30 can be easily handled. It can be improved.

(8) In addition, since the posture of the operation pole 30 during manual operation is different from the posture of the operation pole 30 during non-operation, the posture of the operation pole 30 during non-operation may be the above-described horizontal placement. , a posture specialized for shielding can be set.

It should be noted that the above embodiment can also be implemented with the following modifications.
[Operation part]
- The position of the manual operation lever 222 is a position including the center of gravity of the lower screen 20A, and the center of gravity of the lower screen 20A and the center C2 of the lower screen 20A may be different positions. The position of the lower screen 20A may be arranged so as to overlap the position of the manual operation lever 222 in the front-rear direction, and the position of the manual operation lever 222 does not include the center of gravity of the lower screen 20A in the front-rear direction. It's good. However, if the position of the manual operation lever 222 includes the center of gravity of the lower screen 20A in the front-rear direction, the effects according to the above (1) and (2) are enhanced.
- The shielding device can be changed to a configuration in which the bottom handle 22A is omitted and an operating portion integrated with the bottom rail 21P is provided. As shown in FIG. 9, the operating portion 21H may be a lever extending in the front-rear direction, a lever extending forward and downward, or a lever extending downward. Further, as shown in FIG. 10, the operation portion 21H may be a depression facing rearward on the front surface of the bottom rail 21P, may be a depression facing upward on the bottom surface, or may be a depression facing upward on the bottom rail 21P. It may be a depression facing forward.
- The intermediate rail 11P can be provided with a plurality of handles arranged in the horizontal direction. Each bottom rail 21P can also have a plurality of bottom handles aligned in the left-right direction. From the viewpoint of suppressing bias in the longitudinal direction of the rails, the plurality of intermediate handles and the plurality of bottom handles are preferably sandwiched between a pair of lifting cords on the left and right sides. Also, the plurality of intermediate handles and the plurality of bottom handles are preferably positioned symmetrically with respect to the center of each rail in the left-right direction.

- The bottom rail 21P can also be configured integrally with the manual operation lever 222 . That is, in the shielding device, the rail and the operating portion may be separate or integrated.

- The intermediate rail 11P can also divide the holding space for holding the operation pole in a part different from the intermediate handle 12A. In this case, the intermediate rail 11P is integrated with the manual operation lever and the pole support, and it is also possible to separate the holding space.

- The bottom rail 21P can also divide the holding space for holding the operation pole in a part different from the bottom handle 22A. At this time, the bottom rail 21P is integrated with the manual operation lever and the pole support, and it is also possible to divide the holding space.
- The manual operation lever 222 may have a portion that protrudes forward beyond the shielding range 20W in the front-rear direction.

- At least one of the hook insertion hole 22H and the hook stop 22T is located behind the center C2 of the lower screen 20A in the front-rear direction. That is, the hook stop 22T can be positioned rearward of the center C2 in the front-rear direction. Also, the hook stop 22T can be positioned rearward of the hook insertion hole 22H.

・The manual operation lever and the operation auxiliary tool are suspended by engaging the manual operation lever and the manual operation auxiliary tool, or by engaging the manual operation lever and the manual operation auxiliary tool. It can be changed to suspension by magnetic attraction with the operation aid. In short, the manual operation lever and the operation assisting tool may be configured so that the operation assisting tool is hung from the manual operating lever.

・The shielding device can be provided with a depression, a notch, a protrusion, or a magnetic body provided on the rail as the rail operating portion. At this time, the shielding device can omit the manual operation lever. In short, the shielding device may be provided with an operation portion positioned below the shielding material in the vertical direction and overlapping the shielding material in the front-rear direction.
- The operation part may be configured to be movable with respect to the bottom rail. For example, as shown in FIG. 11, an operation pole 30, which is an example of an operation unit, is pivotally supported on the lower surface of the bottom rail 21P so as to be rotatable along the vertical plane. The operation pole 30 is positioned below the honeycomb fabric 20Q and overlaps the shielding range of the honeycomb fabric 20Q in the front-rear direction. As indicated by the dashed line in FIG. 11, the operating pole 30 extends vertically in the operating posture, and as indicated by the solid line in FIG. exist. The bottom rail 21P includes a C-shaped holding portion 21W that opens downward. The operation pole 30 at the time of non-operation is clamped by the holding portion 21W. At this time, the bottom surface of the bottom rail 21P is provided with an upward recess, and the operation pole 30 during non-operation can be accommodated in the recess to be invisible.
This configuration also provides the same effects as those described above. Further, since the operation pole 30 is invisible when not operated, the shielding device equipped with the operation pole 30 can have the same designability as the shielding device without the operation pole 30 mounted.

[Operation aid]
- The operation assisting tool used for the guidance operation is not limited to a linear shape such as the operation pole 30, and various rod shapes such as a curved shape and a broken line shape can be adopted. Moreover, various shapes, such as a string shape and a ring shape, can be employ|adopted for the operation assistance tool.

[Shielding device]
・The shielding device is one of pleated screen, honeycomb screen or horizontal blind. The shielding material is one of pleated fabric, honeycomb fabric, and slats.

・The shielding device can be changed to a type that includes a single shielding material, a type in which multiple shielding materials are arranged vertically, or a type in which multiple shielding materials are arranged in front and back. In short, the shielding device may be any device that raises and lowers the shielding material by a manual operation on the operating portion of the rail.

C1, C2... Center, SB... Succession, 2WB... Width, 10A... Upper screen, 11A, 11C... Locking piece, 11B, 11D... Fabric holder, 11P... Intermediate rail, 12A... Intermediate handle, 12H... Hook insertion hole , 12T... Hook stopper, 13, 23... Elevating cord, 20A... Lower screen, 20W... Shielding range, 21P... Bottom rail, 21A... Locking piece, 21B... Fabric presser, 22A... Bottom handle, 22H... Hook insertion hole, 22T... Hook stop 30... Operation pole 100... Head box 101... Drive shaft 102... Winding unit 103... Gear unit 104... Constant load unit 121, 221... Handle body 122, 222... Guide operation Lever 123, 223... Pole support 124, 224... First fixing claw 125, 225... Second fixing claw 126, 127, 226, 227... Pole stopper, 225A... Extension piece.

Claims (8)

A shielding material that is laminated to the rail by guiding the rail,
The position where the guide operation of the rail is performed is a position spaced downward from the lower end of the shielding material,
The shielding material is arranged so as to overlap the position of the guide operation of the rail in the front-rear direction,
The rail has an operation piece extending in the front-rear direction at a position for the manual operation of the rail,
The shielding device, wherein the front-rear center of the shielding material is located rearward of the front-rear center of the operation piece . a rail;
a shielding material;
A shielding device that raises and lowers the shielding material by a manual operation of the rail,
An operation unit attached to the rail at a position for the guide operation of the rail,
The operation part is positioned below the shielding material in the vertical direction of the shielding material, and a part of the operation part overlaps the shielding material in the front-rear direction of the shielding material,
The shielding device, wherein the center of the shielding material in the longitudinal direction is located forward of the rail. a rail;
a shielding material;
A lifting cord connected to the rail,
A shielding device that raises and lowers the shielding material by a manual operation of the rail,
The rail has an operation piece at a position for the manual operation of the rail,
The operation piece is positioned below the shielding material in the vertical direction of the shielding material and overlaps the shielding material in the front-rear direction of the shielding material,
a position of the operating piece in the front-rear direction is forward of the lifting cord;
The shielding device, wherein the center of the shielding material in the front-rear direction is located forward of the lifting cord. 4. The shielding device according to any one of claims 1 to 3, wherein the center of gravity of the shielding material is included in the guide operation position in the front-rear direction of the shielding material. 5. The shielding device according to any one of claims 1 to 4, wherein the position of the guide operation in the front-rear direction of the shielding material is within the range occupied by the shielding material. 6. The length in the longitudinal direction of the rail is shorter than the length in the vertical direction of the rail and shorter than the length in the longitudinal direction of the shielding material. Shielding device. The rail has an engaging portion that engages with the operation aid,
The shielding device according to any one of claims 1 to 6, wherein the center of the shielding material in the front-rear direction is located forward of the engaging portion in the front-rear direction. 8. The shielding device according to any one of claims 1 to 7, wherein the guide operation position of the rail is located below the center of the rail in the vertical direction of the shielding material.

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