JP7198057B2 - Shielding device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a shielding device capable of opening and closing a shielding material.

2. Description of the Related Art Conventionally, a shielding device is known that has an operation device for opening and closing a shielding member in the horizontal direction or the vertical direction. For example, a shielding device having an operating device for opening and closing the shielding material in the horizontal direction includes a partition device, a vertical blind, or a curtain rail. Examples of devices include roll screens, horizontal blinds, roll-up curtains or pleated screens.

Among these various shielding devices, those having an operation device that allows the shielding material to be opened and closed by directly pulling the open/close cords such as lifting cords and traction cords for opening and closing the shielding material to the outside as operation codes. be.

As an example, there is known a partitioning device that opens and closes a shielding material by directly pulling an opening/closing cord for opening/closing the shielding material as an operation code (see, for example, Patent Document 1).

The partition device disclosed in Patent Document 1 has an operation device for leading out the shielding material to the indoor side and the outdoor side using an opening/closing cord for opening and closing the shielding material as an operation code. On the other hand, it is designed so that it can be operated from indoors and outdoors.

On the other hand, among the various shielding devices, there is a winding shaft for directly winding up or rewinding the shielding material, or an opening/closing cord such as a lifting cord or a traction cord for opening and closing the shielding material is wound up or rewound. Some have a take-up shaft for An operation device provided in such a shielding device has an operation cord that is hung on an operation pulley. By operating the operation cord, a winding shaft related to opening and closing of the shielding material is rotated to open and close the shielding material. can be made

Japanese Patent Application Laid-Open No. 2015-211701

As described above, the partitioning device disclosed in Patent Document 1 has an operation device that uses an opening/closing code for opening and closing the shielding material as an operation code and leads the shielding material to the indoor side and the outdoor side. The shielding material can be operated from indoors and outdoors.

However, the operating device disclosed in Patent Document 1 has a winding shaft for directly winding up or rewinding the shielding material, or has an opening/closing cord such as a lifting cord or a traction cord for opening/closing the shielding material. It cannot be applied to a shielding device having a winding shaft for winding up or unwinding.

In particular, in the operation device disclosed in Patent Document 1, it is necessary to continuously pull the operation cord for direct pulling in order to fully open (or fully close) the shielding material.

Therefore, it has a winding shaft for directly winding up or rewinding the shielding material, or has a winding shaft for winding up or rewinding an opening/closing cord such as a lifting cord or a traction cord for opening and closing the shielding material. In the shielding device, there is a demand for a technique for improving the operability of opening and closing the shielding material by enabling the shielding material to be operated from inside and outside the room and by enabling the operation cord to be repeatedly pulled. .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shielding device which improves operability and enables the opening and closing operation of the shielding material.

A shielding device according to a first aspect of the present invention is a shielding device that allows a shielding material to be opened and closed, and includes an opening/closing cord for directly winding up or rewinding the shielding material, or for opening and closing the shielding material. and an operating device for operating the rotation of the winding shaft, wherein the operating device includes an operating pulley and one end connected to the operating pulley and the other end a pair of operation cords that are operably suspended from both the front side and the rear side of the shielding device, a biasing member that always biases the operation pulley in a direction in which the pair of operation cords is wound, and the operation pulley and a clutch portion that transmits only one-way rotation of the to the winding shaft.

Further, in the shielding device of the first aspect according to the present invention, the operation device is such that when one operation cord of the pair of operation cords is pulled, the other operation cord is unwound from the operation pulley, and the pair of operation cords is pulled back. It is characterized in that the cords operate to descend simultaneously.

Further, in the shielding device of the first aspect according to the present invention, an urging mechanism for urging the winding shaft to open or close the shielding material, and an urging mechanism for stopping the operation of the urging mechanism. and a stopper portion, wherein the operating device is configured to switch between starting and releasing the operation of the stopper portion by pulling one of the pair of operation cords.

Further, the shielding device of the second aspect according to the present invention is a shielding device that enables opening and closing operation of the shielding material, and is for directly winding up or rewinding the shielding material, or for opening and closing the shielding material. A winding shaft for winding up or rewinding an opening/closing cord, a first operating device for suspending a first operation cord for operating the rotation in one direction of the winding shaft, and the other direction of the winding shaft. and a second operating device for suspending a second operating cord for operating the rotation of the shielding material, wherein the pair of first operating cords in the first operating device is configured for closing the shielding material. and the pair of second operation cords in the second operation device are configured for opening operation of the shielding material, and the first operation device is connected to a first operation pulley and the first operation pulley. a pair of first operating cords each having one end connected and the other end operably hanging from both front and rear sides of the shielding device; The second operating device has a first urging member that always urges in a winding direction, and a first clutch section that transmits only one-directional rotation of the first operating pulley to the winding shaft. is a second operating pulley, a pair of second operating cords each having one end connected to the second operating pulley and having the other end operably suspended from both front and rear sides of the shielding device; a second biasing member that always biases the pair of second operation cords in the direction of winding the pair of operation cords against the operation pulley, and the second operation pulley that rotates in a direction opposite to the one-way rotation of the first operation pulley; and a second clutch portion for transmitting only one-way rotation of the operating pulley to the winding shaft .

According to the present invention, the shielding material can be operated from inside and outside the room, and the operability of opening and closing the shielding material can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows schematic structure of the roll screen which is an example as a shielding apparatus of 1st Embodiment by this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows schematic structure of the roll screen which is an example as a shielding apparatus of 1st Embodiment by this invention. It is a sectional view showing a schematic structure of an operating device in a roll screen which is an example as a shielding device of a 1st embodiment by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows schematic structure of the operating device in the roll screen which is an example as a shielding device of 1st Embodiment by this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is an exploded perspective view which shows schematic structure of the operating device in the roll screen which is an example as a shielding device of 1st Embodiment by this invention. 1 is a perspective view showing assembly of an operation device to a supporting member in a roll screen that is an example of a shielding device according to a first embodiment of the present invention; FIG. (a) to (c) are side cross-sectional views showing the operation of the operating device in the roll screen, which is an example of the shielding device according to the first embodiment of the present invention. It is a front view which shows schematic structure of the roll screen which is an example as a shielding apparatus of 2nd Embodiment by this invention. It is a sectional view showing a schematic structure of the 1st operating device in the roll screen which is an example as a shielding device of a 2nd embodiment by the present invention. (a), (b) is side sectional drawing which shows operation|movement of the 2nd and 1st operation device in the roll screen which is an example as a shielding apparatus of 2nd Embodiment by this invention, respectively.

Hereinafter, a roll screen, which is an example of a shielding device according to each embodiment of the present invention, will be described with reference to the drawings. In the specification of the present application, with respect to the front view of the roll screen shown in FIG. The left side of the screen and the right direction in the figure are defined as the right side of the roll screen. In addition, in the examples described below, with respect to the front view of the roll screen shown in FIG. 1, the viewing side is the front side (or indoor side), and the opposite side is the rear side (or outdoor side).

[First embodiment]
(overall structure)
FIG. 1 is a front view showing a schematic configuration of a roll screen, which is an example of a shielding device according to a first embodiment of the present invention. Moreover, FIG. 2 is a side view showing a schematic configuration of a roll screen, which is an example of the shielding device of the first embodiment according to the present invention. The roll screen of the first embodiment shown in FIGS. A single winding shaft 6 is rotatably supported in. A side cover 4 is attached to the support member 3 from the viewpoint of design.

An upper end portion of the screen 5 is attached to the winding shaft 6, and the screen 5 is wound up or unwound by the winding shaft 6 so that the screen 5 can be raised and lowered. A weight bar 12 functioning as a weight member is provided at the lower end of the screen 5 .

An operation device 9 is attached to the right support member 3 shown in FIG. A first grip 8A and a second grip 8B are attached to the lower ends of the pair of operation cords 7A and 7B, respectively. Although the details will be described later, by operating the pair of operation cords 7A and 7B, the rotation of the winding shaft 6 is operated and the screen 5 can be raised and lowered.

In the example of this embodiment, a spring motor 10 is housed in the winding shaft 6 as an urging mechanism that always urges the screen 5 in the direction to wind it up. It's becoming A stopper portion 11 that operates to stop the operation of the spring motor 10 is accommodated within the winding shaft 6 . The operating device 9 is configured to switch between starting and releasing the operation of the stopper portion 11 by pulling one of the pair of operation cords 7A and 7B. Therefore, when the operation of the stopper portion 11 is released, the screen 5 is automatically wound up on the winding shaft 6, and when the operation of the stopper portion 11 is started, the operation of the spring motor 10 is locked, the position of the weight bar 12 is stopped, and the screen 5 is pulled up. is prevented from rising.

Since the shielding device of this embodiment is configured to open and close the shielding material in the vertical direction, the spring motor 10 is used as an urging mechanism for urging the winding shaft 6 to open the shielding material. However, when the shielding device is configured to open and close the shielding material in the horizontal direction as disclosed in Patent Document 1, for example, the shielding material is in either the open state or the closed state. It is possible to adopt a configuration in which an urging mechanism for urging the winding shaft is provided.

An operation device 9 is attached to the right support member 3 shown in FIG. By operating the pair of operation cords 7A and 7B, the rotation of the winding shaft 6 is operated to move the screen 5 up and down.

(Operating device)
FIG. 3 is a cross-sectional view showing a schematic configuration of an operating device 9 in a roll screen, which is an example of a shielding device according to the first embodiment of the present invention. 4 is a perspective view showing a schematic configuration of the operating device 9, and FIG. 5 is an exploded perspective view showing a schematic configuration of the operating device 9. As shown in FIG. 6 is a perspective view showing how the operating device 9 is attached to the support member 3. As shown in FIG.

First, as shown in FIGS. 3 to 5, the operation device 9 is assembled to the support member 3, and includes a fixed shaft member 91, a spiral spring 92 (biasing member), an operation pulley 93, and a clutch portion 94 (one-way clutch). , a pulley case 95 , a transmission member 96 and a shaft holder 97 .

In particular, as shown in FIG. 5, the fixed shaft member 91 has its main body fixed to the support member 3 . For example, a pair of screw holes 91a are provided in the fixed shaft member 91 at positions corresponding to the pair of screw holes 3a provided in the support member 3, and mounting screws (not shown) are provided in the respective screw holes 3a, 91a. is screwed in, the fixed shaft member 91 is fixed to the support member 3 .

The fixed shaft member 91 is provided with a substantially cylindrical fixed shaft 91b protruding leftward in the figure. A substantially cylindrical central shaft 93c of the operating pulley 93 is inserted into the fixed shaft 91b, and the operating pulley 93 is rotatably supported with respect to the fixed shaft member 91. As shown in FIG.

The operating pulley 93 is provided with a hollow portion that accommodates the spiral spring 92 , and one end 92 a of the spiral spring 92 is engaged with a notch 93 e formed in a portion of the peripheral wall of the operating pulley 93 that accommodates the spiral spring 92 . (see Figure 6). On the other hand, one end 92b of the spiral spring 92 is engaged with a notch 91c provided on the fixed shaft 91b of the fixed shaft member 91 .

Further, the operation pulley 93 is provided with reel portions 93a and 93b integrally arranged in parallel in the axial direction. The reel parts 93a and 93b rotate together and are not separated. One ends of a pair of operation cords 7A and 7B are connected to respective reel portions 93a and 93b of the operation pulley 93, and the other ends of the operation cords 7A and 7B are operably suspended from the front and rear of the screen 5 to provide a first grip 8A and a second grip, respectively. 8B is attached. The spiral spring 92 always biases the operation pulley 93 in the direction in which the pair of operation cords 7A and 7B are wound.

The clutch portion 94 (one-way clutch) is a member for transmitting only one-way rotation of the operation pulley 93 (rewinding direction of the pair of operation cords 7A and 7B) to the winding shaft 6, as shown in FIG. 2, as main components, a fixed shaft 941 fixed to the fixed shaft member 91 so as not to rotate; It is configured to have an output shaft 943 that rotates by transmitting only one-way rotation, and a clutch spring 944 that operates a clutch function that transmits only one-way rotation of the input shaft 942 to the output shaft 943 .

A convex portion 941 a is provided at one end of the fixed shaft 941 in the clutch portion 94 , and the convex portion 941 a is formed in a part of a bearing portion 91 d bored in the fixed shaft 91 b of the fixed shaft member 91 . One end of the fixed shaft 941 is engaged and inserted into the bearing portion 91d of the fixed shaft member 91 so as to fit with the concave portion 941d (see FIG. 6), so that the fixed shaft 941 of the clutch portion 94 is connected to the fixed shaft member. It is non-rotatably fixed with respect to 91 .

The input shaft 942 of the clutch portion 94 is provided with a pair of protruding pieces 942a which engage with a pair of recessed portions 93d formed on the central shaft 93c of the operating pulley 93, thereby allowing the input shaft 942 of the clutch portion 94 to move toward the operating pulley. It is fitted to the central shaft 93c of 93 so as not to rotate relative to it.

The output shaft 943 in the clutch portion 94 is configured to rotate by transmitting only one-way rotation of the input shaft 942 and has a cam portion (not shown) that functions as a so-called one-way clutch by the action of the clutch spring 944 .

A compression spring 961 acting as a torque limiter is provided on the output shaft 943 of the clutch portion 94 (see FIG. 3). However, the compression spring 961 may not necessarily be provided.

An operating pulley 93 containing a spiral spring 92 is rotatably supported within a case portion 95 a of a pulley case 95 . A clutch portion 94 that transmits only one-way rotation of the operating pulley 93 (rewinding direction of the pair of operating cords 7A and 7B) to the winding shaft 6 is supported in a cylindrical case portion 95b of the pulley case 95. be. The end of the output shaft 943 in the clutch portion 94 is positioned at the end of the case portion 95b, and the end of the output shaft 943 is fitted to the transmission member 96 so as not to rotate relative to each other.

The shaft holder 97 is fixed to one end of the winding shaft 6 and rotatably supported on the case portion 95 b of the pulley case 95 . Then, the transmission member 96 is fitted to the inner peripheral wall 97a of the shaft holder 97 so as not to rotate relative to each other. That is, the unidirectional rotation of the output shaft 943 in the clutch portion 94 is transmitted to the winding shaft 6 via the transmission member 96 and the shaft holder 97 .

As shown in FIG. 6, a case portion 95a of the pulley case 95 is provided with cord guide portions 95c and 95d for guiding the pair of operation cords 7A and 7B so as to be operably suspended from the front and rear of the screen 5, respectively. . In this embodiment, pulleys are not used to guide the drooping of the pair of operation cords 7A and 7B. The fixed shaft member 91 is also formed with shaft holes 91e and 91f at positions corresponding to these shaft holes 95e and 95f. ), and pulleys (not shown) supported by the shaft holes 95f and 91f may be provided to smoothen the movement of the pair of operation cords 7A and 7B. As a modified example of the cord guide portion 95c, the cord guide portion 95c may have a slope for smooth movement of the operation cord 7A, as shown in the dashed circle in FIG.

As shown in FIG. 6, when the operating pulley 93 containing the spiral spring 92 is rotatably supported in the case portion 95a of the pulley case 95, the spiral spring 92 is attached to the operating pulley 93 in a pair. The operation cords 7A and 7B are always urged in the winding direction (direction A in the figure). The operation pulley 93 rotates in the unwinding direction (direction B in the drawing) regardless of which one of the pair of operation cords 7A and 7B is pulled. As a result, the rotation of the operating pulley 93 is transmitted to the winding shaft 6 .

(Overall operation)
7A to 7C are cross-sectional side views showing the operation of the operation device 9 in the roll screen, which is an example of the shielding device of the first embodiment according to the present invention.

First, as shown in FIG. 7A, when the operation cord 7A is pulled out from the operation device 9 by pulling the first grip 8A, the operation pulley 93 moves in the illustrated direction against the biasing force of the spiral spring 92. While rotating, the operation cord 7B is also unwound from the operation pulley 93 and the second grip 8B is also lowered, the rotation of the operation pulley 93 is transmitted to the winding shaft 6 by the action of the clutch portion 94, and the screen 5 is closed. , and the weight bar 12 descends.

Subsequently, when the first grip 8A is released from the state of FIG. 7(a) as shown in FIG. 7(b), the biasing force of the spiral spring 92 causes the operation cord 7A to be wound up by the operation pulley 93 and operated. The cord 7B is also wound up by the operating pulley 93, but the rotation of the operating pulley 93 is not transmitted to the winding shaft 6 due to the action of the clutch portion 94, and the locking operation of the stopper portion 11 stops the operation of the spring motor 10, thereby stopping the weight bar. Position 12 remains stationary.

Therefore, the operator can lower the weight bar 12 to a desired position by repeating the operations shown in FIGS. 7A and 7B within the reach of the first grip 8A without changing the posture. , the screen 5 can be easily closed.

7(b), as shown in FIG. 7(c), when the first grip 8A is slightly pulled and released (the second grip 8B also moves in the same manner), the locking operation by the stopper portion 11 is performed. When released, the spring motor 10 starts operating, the screen 5 is wound up on the winding shaft 6, the screen 5 shifts to the open state, and the weight bar 12 rises.

Therefore, the operator can raise the weight bar 12 to a desired position within the reach of the first grip 8A without changing the operator's posture, thereby facilitating the opening operation of the screen 5.例文帳に追加

As described above, since the operation of the first grip 8A causes the second grip 8B to move in the same manner, the operation of the second grip 8B also causes the first grip 8A to move in the same manner, and thus the operation of the second grip 8B. is the same as that shown in FIG.

Therefore, according to this embodiment, in the shielding device (roll screen in this example) having the winding shaft 6 for directly winding up or rewinding the shielding material (screen in this example), the shielding material is In addition, the operability of opening and closing the shielding material can be improved.

In addition, instead of the shielding device having the winding shaft 6 for directly winding up or rewinding the shielding material (screen in this example), an opening/closing cord such as a lifting cord or a traction cord for opening and closing the shielding material is provided. By applying the operation device 9 according to the present invention to a shielding device having a winding shaft for winding up or rewinding, it becomes possible to operate the shielding material from indoors and outdoors, and to operate the shielding material for opening and closing operations. can improve sexuality. A drive shaft is inserted through a winding shaft for winding up or rewinding such an opening/closing cord, which is usually provided in a horizontal blind or the like, so as not to be relatively rotatable. The transmission member 96 described above may be modified so as to connect the output shaft 943 of the clutch 94 so as not to rotate relative to each other.

[Second embodiment]
(overall structure)
FIG. 8 is a front view showing a schematic configuration of a roll screen, which is an example of a shielding device according to a second embodiment of the present invention. In addition, in FIG. 8, the same reference numerals are given to the same components as in the first embodiment.

The roll screen of the second embodiment shown in FIG. 8 has support members 3 attached to both ends of a frame 2 which is attached to a mounting surface such as a window frame via mounting brackets 1 in the same manner as in the first embodiment. , one winding shaft 6 is rotatably supported by the supporting member 3 . A side cover 4 is attached to the support member 3 from the viewpoint of design.

Further, as in the first embodiment, the upper end of the screen 5 is attached to the winding shaft 6, and the screen 5 is wound up or unwound by the winding shaft 6 so that the screen 5 can be raised and lowered. A weight bar 12 functioning as a weight member is provided at the lower end of the screen 5 .

A first operation device 9R configured in the same manner as the operation device 9 in the first embodiment is attached to the right support member 3 shown in FIG. 8 (see FIG. 10(b)). A pair of operation cords 7A and 7B are suspended from the front and rear of the screen 5 from the device 9R so as to be operable. A first grip 8A and a second grip 8B are attached to the lower ends of the pair of operation cords 7A and 7B of the first operating device 9R, respectively. However, in this embodiment, by operating the pair of operation cords 7A and 7B on the first operating device 9R, the rotation of the winding shaft 6 is operated to allow the screen 5 to be "lowered".

On the other hand, on the left support member 3 shown in FIG. 8, although having the same structure as the operation device 9 in the first embodiment, a spiral spring 92 (biasing member) and an operation device are provided so as to allow the screen 5 to be "raised". A second operating device 9L configured to operate the pulleys 93 symmetrically is attached (see FIG. 10(a)), and a pair of operating cords are operably suspended from the front and rear of the screen 5 from the operating device 9L. 7A and 7B are suspended. A first grip 8A and a second grip 8B are attached to the lower ends of the pair of operation cords 7A and 7B of the second operating device 9L, respectively. That is, in this embodiment, by operating the pair of operation cords 7A and 7B on the second operating device 9L, the rotation of the winding shaft 6 is operated to enable the screen 5 to be "raised".

Thus, the pair of operation cords 7A and 7B in the first operating device 9R are configured for closing the screen 5, and the pair of operation cords 7A and 7B in the second operating device 9L are for opening the screen 5. is configured as

Therefore, in the example of this embodiment, the spring motor 10 and the stopper portion 11 of the first embodiment are not provided inside the winding shaft 6 .

More specifically, as shown in FIGS. 3 to 6, the first operating device 9R has an operating pulley (first operating pulley) 93 and one end connected to the first operating pulley. A pair of operation cords (first operation cords) 7A and 7B, the other end of which is operably suspended from the front and rear of the screen 5, and a direction in which the pair of first operation cords are wound around the first operation pulley. A spiral spring (first biasing member) 92 that biases and a clutch portion 94 (first biasing member) that transmits only one-way rotation of the first operating pulley (the direction in which the screen 5 is lowered) to the winding shaft 6. clutch).

On the other hand, the second operating device 9L has the same structure as the first operating device 9R and will be described with the same reference numerals. ) and the operating pulley 93 are configured to operate symmetrically, and the operating pulley (second operating pulley) 93 and the second operating pulley are connected at one end and can be operated from the front and rear of the screen 5 at the other end. A pair of operation cords (second operation cords) 7A and 7B that hang down to the second operation pulley, and a spiral spring (second attachment force member) 92 and only the one-way rotation of the second operation pulley (the direction in which the screen 5 is lifted), which is opposite to the one-way rotation of the first operation pulley, is transmitted to the winding shaft 6. It has a clutch portion 94 (second clutch portion) that

In addition, unlike the first embodiment, the compression spring 961 is not provided, and the transmission member 96 serving as the output shaft of each clutch portion 94 in the first operating device 9R and the second operating device 9L has a screen A brake spring 962 is provided for applying a braking force to the rotation of the winding shaft 6 to prevent the weight bar 12 from dropping due to the winding shaft 5 and the weight bar 12 . FIG. 9 is a cross-sectional view showing a schematic configuration of a first operating device 9R (similar to the second operating device 9L) in a roll screen, which is an example of a shielding device according to the second embodiment of the present invention. The brake spring 962 is wound around the left end of the fixed shaft 941 so as to apply a braking force to the transmission member 96 . In this embodiment, as shown in FIG. 9, since the output shaft 943 shown in FIG. are fitted so that they can rotate freely. Therefore, the braking force is applied to the winding shaft 6 by the brake spring 962 . Incidentally, the braking means for applying a braking force for preventing the weight bar 12 from dropping due to the screen 5 and the weight bar 12 is not limited to this example, and there are various methods. For example, instead of providing braking means in the first operating device 9R and the second operating device 9L, another fixing device connecting each fixed shaft 941 between the first operating device 9R and the second operating device 9L may be provided. A braking force may be directly applied to the winding shaft 6 by providing a shaft and winding a brake spring around the fixed shaft.

(equipment operation)
10(a) and 10(b) are cross-sectional side views showing operations of the second and first operating devices 9L and 9R in a roll screen, which is an example of the shielding device of the second embodiment according to the present invention, respectively. . In the second embodiment, the operation of the first operating device 9R is such that, as shown in FIG. 10(b) described above, the operator can reach the first grip 8A without changing his or her posture. By repeating the operation shown in (b), the weight bar 12 can be lowered to a desired position, so that the screen 5 can be easily closed.

On the other hand, as shown in FIG. 10(a), the operation of the second operating device 9L is such that the operator can perform the operation shown in FIG. 10(a) within the reach of the first grip 8A without changing the posture. By repeating the above, the weight bar 12 can be raised to a desired position, so that the screen 5 can be easily opened.

Therefore, according to this embodiment, in the shielding device (roll screen in this example) having the winding shaft 6 for directly winding up or rewinding the shielding material (screen in this example), the shielding material is In addition, the operability of opening and closing the shielding material can be improved.

In addition, instead of the shielding device having the winding shaft 6 for directly winding up or rewinding the shielding material (screen in this example), an opening/closing cord such as a lifting cord or a traction cord for opening and closing the shielding material is provided. By applying the operation devices 9L and 9R according to the present invention to a shielding device having a winding shaft for winding up or rewinding, it becomes possible to operate the shielding material from indoors and outdoors, and to open and close the shielding material. Such operability can be improved. A drive shaft is inserted through a take-up shaft for winding up or rewinding such an opening/closing cord, which is usually provided in a horizontal blind or the like, so as not to rotate relative to the drive shaft. The transmission member 96 described above may be modified so as to connect the transmission member 96 fitted or integrated with the output shaft of each clutch 94 in 9L and 9R so as not to rotate relative to each other.

Although the present invention has been described with reference to specific embodiments, the present invention is not limited to the above-described embodiments, and can be modified in various ways without departing from the technical idea thereof. For example, in the above-described embodiments, examples of the operating devices 9, 9L, and 9R having shapes suitable for roll screens have been described, but operating devices having shapes suitable for various shielding devices can be configured. Examples of shielding devices for opening and closing the shielding material in the horizontal direction include partition devices, vertical blinds, curtain rails, etc. Examples of shielding devices for opening and closing the shielding material in the vertical direction include roll screens and horizontal There are blinds, roll-up curtains, pleated screens, etc., but operating devices 9, 9L, 9R having similar components under the same idea as the above-described embodiments can be configured and applied to any of them. can be done. Accordingly, the present invention is not limited to the example embodiments described, but only by the scope of the claims.

According to the present invention, since the operability is improved as compared with the conventional technique, it is useful for the application of the shielding device that opens and closes the shielding material using the operation code.

Reference Signs List 1 mounting bracket 2 frame 3 support member 5 screen 6 winding shaft 7A, 7B operation cord 8A first grip 8B second grip 9 operating device 9R first operating device 9L second operating device 10 spring motor (biasing mechanism)
11 stopper portion 12 weight bar (weight member)
91 fixed shaft member 92 spiral spring (biasing member)
93 Operation pulley 94 Clutch part (one-way clutch)
95 pulley case 96 transmission member 97 shaft holder

Claims (4)

A shielding device capable of opening and closing a shielding material,
a winding shaft for directly winding up or rewinding the shielding material, or for winding up or rewinding an opening/closing cord for opening and closing the shielding material;
an operating device for operating the rotation of the winding shaft,
The operating device is
an operating pulley;
a pair of operating cords each having one end connected to the operating pulley and having the other end operably suspended from both front and rear sides of the shielding device;
an urging member that always urges the operation pulley in a direction in which the pair of operation cords is wound;
a clutch unit that transmits only one-way rotation of the operating pulley to the winding shaft;
A shielding device comprising: The operation device is characterized in that when one of the pair of operation cords is pulled, the other operation cord is unwound from the operation pulley, and the pair of operation cords are simultaneously lowered. The shielding device of claim 1, wherein a biasing mechanism that biases the winding shaft to open or close the shielding material;
a stopper portion that operates to stop the operation of the biasing mechanism;
3. The operation device according to claim 1, wherein the operating device is configured to switch between starting and releasing the operation of the stopper portion by pulling one of the pair of operation cords. Shielding device. A shielding device capable of opening and closing a shielding material,
a winding shaft for directly winding up or rewinding the shielding material, or for winding up or rewinding an opening/closing cord for opening and closing the shielding material;
a first operating device for suspending a first operating cord for operating rotation of the winding shaft in one direction;
a second operating device for suspending a second operating cord for operating rotation of the winding shaft in the other direction;
The pair of first operation cords in the first operating device are configured for closing the shielding material, and the pair of second operation cords in the second operating device are configured for opening the shielding material. configured as
The first operating device includes a first operating pulley, a pair of first operating pulleys each having one end connected to the first operating pulley and having the other end operably suspended from both front and rear sides of the shielding device. an operation cord, a first biasing member that always biases the pair of first operation cords against the first operation pulley in a winding direction, and only one-way rotation of the first operation pulley. Having a first clutch part that transmits to the winding shaft,
The second operating device includes a second operating pulley, and a pair of second operating pulleys each having one end connected to the second operating pulley and having the other end operably suspended from both front and rear sides of the shielding device. an operating cord, a second urging member that always urges the second operating pulley in a direction to wind the pair of second operating cords, and a unidirectional rotation of the first operating pulley that is opposite to the rotation of the first operating pulley. A shielding device comprising a second clutch portion for transmitting only one-directional rotation of said second operating pulley to said winding shaft .

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