JP2020117977A - Roll screen - Google Patents

Abstract

To provide a roll screen in which accurate mounting of a winding pipe and a bracket can be mechanically confirmed.SOLUTION: A roll screen 100 includes: a bracket 110; a winding pipe 120 rotatably supported by the bracket 110; a screen 130 whose one end is coupled to the winding pipe 120 in a winding and unwinding manner; a rotary shaft 140 rotatably supported by the bracket 110; a winding shaft 121 rotating together with the winding pipe 120 and rotating together with the rotary shaft 140 by being mounted on the rotary shaft 140; and switching means 150 capable of switching to restrict the rotation of the rotary shaft 140 when the winding shaft 121 is not mounted on the rotary shaft 140 and to allow the rotary shaft 140 to rotate when the winding shaft 121 is mounted on the rotary shaft 140. Accurate mounting of the winding pipe 120 and the bracket 110 can be mechanically confirmed.SELECTED DRAWING: Figure 2

Description

The present invention relates to roll screens.

As a conventional roll screen, there is one shown in JP-A-2002-220982 (Patent Document 1). In the roll screen disclosed in the document, a case is fixed to a bracket on one end side of the winding pipe, and a shaft receiver is pivotally supported in the case. The rotation of the shaft receiver is transmitted from a pulley that is rotationally driven by an operation code. A shaft cap attached to one end of the winding pipe is integrally rotatably inserted into the shaft receiver.

According to this, the rotation of the pulley is transmitted to the shaft receiver by operating the operation code, and the winding pipe can be rotationally driven via the shaft cap.

JP, 2002-220982, A

In the conventional roll screen as disclosed in Patent Document 1, when the shaft cap of the take-up pipe is inserted into the shaft receiver, the shaft cap is inserted all the way into the shaft receiver, but the shaft cap is correctly attached to the shaft receiver. The problem is that confirmation depends only on the human sense.

Therefore, the present invention has been made in view of such a problem, and an object of the present invention is to provide a roll screen capable of mechanically confirming accurate attachment of a winding pipe and a bracket. It is in.

To solve the above problems, according to a first aspect of the present invention, a bracket, a winding pipe rotatably supported by the bracket, and one end of the winding pipe can be wound and unwound. A screen to be connected, a rotating shaft rotatably supported by the bracket, a winding shaft that rotates integrally with the winding pipe and is attached to the rotating shaft to rotate integrally with the rotating shaft, Switchable switching that restricts rotation of the rotary shaft when the take-up shaft is not mounted on the rotary shaft, and permits rotation of the rotary shaft when the take-up shaft is mounted on the rotary shaft A roll screen is provided, which comprises:

According to such a configuration, by providing the switching means capable of switching the regulation or allowance of the rotation of the rotation shaft, the rotation of the rotation shaft when the winding shaft is not accurately attached to the rotation shaft (erroneous attachment is performed). Is regulated. Therefore, the correct attachment of the winding pipe and the bracket can be mechanically confirmed. Such confirmation of accurate attachment also prevents the winding pipe from falling.

The present invention can be applied in various ways. For example, the switching means includes a locking portion provided on a case fixed to the bracket, a locked portion provided on the rotating shaft and capable of locking the locking portion, and the locking portion. An engaging member that is engageable with the locked portion and is capable of locking or unlocking the locking portion and the locked portion, wherein the engaging member is the locking The rotation of the rotating shaft may be restricted by locking the locking portion and the locked portion, and the rotation of the rotating shaft may be allowed by unlocking the locking portion and the locked portion. .. By engaging or disengaging the engaging member with the locking part and the locked part, the locking part and the locked part are locked or unlocked to rotate the rotary shaft. It is possible to switch between regulation and allowance.

The engagement member is rotatably connected to the rotation shaft, and when the winding shaft is attached to the rotation shaft, the engagement member comes into contact with the winding shaft to be locked with the locking portion. You may make it rotate in the releasing direction. The rotation shaft cannot be rotated unless it is attached to the rotation shaft until the winding shaft comes into contact with the engaging member.

Further, a plurality of the locking portions may be provided in the rotation direction of the rotation shaft. By providing the locking portions at a plurality of positions, the engaging member can be engaged with the locking portions regardless of the rotation angle of the rotating shaft, and rotation of the rotating shaft can be restricted.

Further, the engagement member is provided in the case so as to be movable in the radial direction of the rotation shaft, and the engagement member is inserted through the engagement portion such that the engagement member can be inserted into and removed from the engaged portion. When it is inserted into the locked portion, the locking portion and the locked portion are locked, and when the locked portion is disengaged, the locking portion and the locked portion are engaged. You may make it stop release. By moving the engaging member in the radial direction of the rotating shaft, it is possible to switch between locking and unlocking of the locking portion and the locked portion.

Further, the winding shaft may be provided with a pressing piece that presses the engaging member so as to slide. Therefore, it is not necessary to separately provide a mechanism for sliding the engaging member other than the winding shaft.

Further, the switching means includes a sliding member which is arranged on the rotating shaft and slides in the axial direction. When the winding shaft is mounted on the rotating shaft, the sliding member slides in the axial direction. The engaging member may be moved to move so as to be separated from the locked portion. The sliding member can surely slide the engaging member.

Further, a support member fixed to a roll screen attachment target (a window frame or a wall) may be further provided, and the bracket may be supported by the support member so as to be movable relative to each other. Since the position of the bracket can be adjusted by relatively moving the bracket and the support member, it is possible to easily adjust the position of the bracket without the need to remove the screw like fixing with screws.

According to a second aspect of the present invention, a bracket, a winding pipe rotatably supported by the bracket, and a screen having one end connected to the winding pipe so that the winding pipe can be wound and unwound. A roll screen comprising: a winding shaft that rotates integrally with the winding pipe and is rotatably mounted on the bracket; and a winding shaft of the winding shaft when the winding shaft is not mounted on the bracket. A roll screen is provided, which is provided with a switching unit that regulates rotation and is switchable to allow rotation of the winding shaft when the winding shaft is mounted.

According to such a configuration, by providing the switching means capable of switching the rotation or the restriction of the rotation of the winding shaft, the rotation of the winding shaft can be prevented if the winding shaft is not correctly attached (wrong attachment is performed). Regulated. Therefore, the correct attachment of the winding pipe and the bracket can be mechanically confirmed. Such confirmation of accurate attachment also prevents the winding pipe from falling. The same application as the first aspect of the present invention is possible.

According to the present invention, there is provided a roll screen capable of mechanically confirming accurate attachment of the winding pipe and the bracket. Other effects of the present invention will be described in the modes for carrying out the invention described later.

It is the front view which showed the whole roll screen 100 composition roughly. It is a figure of operation side bracket 110-1 vicinity, (a) is a partial sectional view seen from the front, (b) is an AA sectional view of (a). It is a figure for demonstrating operation|movement of the roll screen 100, (a) is a fragmentary sectional view seen from the front, (b) is a BB sectional view of (a). It is a figure which shows the structure of the roll screen 200 of 2nd Embodiment. It is a figure which shows the structure of the roll screen 300 of 3rd Embodiment, (a) shows the state which the engaging member 353 has locked by the top locking part 351, (b) shows the engaging member 353. FIG. Shows the state of being locked by the horizontal locking portion 351. It is a figure which shows the structure of the roll screen 400 of 4th Embodiment, (a) shows the state before attaching the winding shaft 421 to the rotating shaft 440, (b) shows the winding shaft 421 rotating shaft 440. The state where it is attached to. It is a figure which shows the structure of the roll screen 500 of 5th Embodiment, (a) shows the state before attaching the winding shaft 521 to the rotating shaft 540, (b) shows the winding shaft 521 to the rotating shaft 540. The state where it is attached to.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this specification and the drawings, constituent elements having substantially the same functional configuration are designated by the same reference numerals, and a duplicate description will be omitted.

The overall configuration of the roll screen 100 of the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a diagram schematically showing the overall configuration of the roll screen 100. 2A and 2B are views in the vicinity of the operation side bracket 110-1, in which FIG. 2A is a partial cross-sectional view seen from the front, and FIG. 2B is a cross-sectional view taken along the line AA of FIG.

As shown in FIGS. 1 and 2, the roll screen 100 includes a bracket 110, a winding pipe 120 rotatably supported by the bracket 110, and one end of the winding pipe 120 that can be wound and unwound. A screen 130, a rotating shaft 140 rotatably supported by the bracket 110, and a winding shaft 121 that rotates integrally with the winding pipe 120 and rotates integrally with the rotating shaft 140 by being attached to the rotating shaft 140. The rotation of the rotary shaft 140 is restricted when the take-up shaft 121 is not attached to the rotary shaft 140, and the rotation of the rotary shaft 140 can be switched when the take-up shaft 121 is attached to the rotary shaft 140. And a switching unit 150. Hereinafter, each component of the roll screen 100 of this embodiment will be described.

(Bracket 110)
The bracket 110 is attached to a mounting object such as a wall or a window frame, and rotatably supports the winding pipe 120. As shown in FIG. 1, the bracket 110 is formed in an L-shape, and includes an operation side bracket 110-1 provided with an operation part for operating the rotation of the winding pipe 120 and an opposite side not provided with the operation part. The operation side bracket 110-2. One end of the take-up pipe 120 is rotatably supported on the operation side bracket 110-1 via an operation section. Further, the winding pipe 120 is directly rotatably supported by the counter operation side bracket 110-2.

As shown in FIG. 2, the operation side bracket 110-1 is provided with a first case 160 and a second case 161 for accommodating an operation mechanism for operating the winding pipe 120. The operation mechanism includes a pulley 162 rotatably arranged in the first case 160 and the second case 161, an operation chain 163 wound around the pulley 162 and driving the pulley 162 to rotate, and a first case 160. And a rotation shaft 140 rotatably supported by.

In the pulley 162, the first connecting member 164 or the second connecting member 165 that rotates integrally with the pulley 162 rotates the rotating shaft 140 while loosening the clutch spring 166. The clutch drum 167 is non-rotatably supported by the first case 160, and when rotating from the winding shaft 121 side, the first connecting member 164 or the second connecting member 165 fastens the clutch spring 166 to the clutch drum 167. To disable rotation. Therefore, the rotation of the pulley 162 is transmitted to the winding shaft 121, but the rotation from the winding shaft 121 is not transmitted to the pulley 162.

As shown in FIG. 2A, the operation chain 163 is wound around the pulley 162 and can drive the pulley 162 to rotate. In the operation chain 163, when the front side is pulled down, the pulley 162 rotates in a direction to raise the screen 130, and when the back side is pulled down, the pulley 162 rotates in a direction to lower the screen 130.

(Winding pipe 120)
The take-up pipe 120 moves up and down the screen 130. As shown in FIG. 1, the take-up pipe 120 is connected to the upper end of the screen 130 so that the screen 130 can be taken up and unwound. As shown in FIG. 2A, a winding shaft 121 that rotates integrally with the winding pipe 120 is provided at one end of the winding pipe 120. The centers of rotation of the winding shaft 121 and the winding pipe 120 are the same. The winding shaft 121 may be formed integrally with the winding pipe 120, or may be configured as a separate body and attached to the end of the winding pipe 120.

The winding shaft 121 can be attached to the rotary shaft 140 by being inserted into an insertion hole 140a of the rotary shaft 140 described later, as shown by an arrow C in FIG. The winding shaft 121 has a rectangular cross section, as shown in FIG. As shown in FIG. 1, many ends of the winding pipe 120 are rotatably supported by the non-operation side bracket 110-2.

(Screen 130)
The screen 130 closes or opens windows and room openings. As shown in FIG. 1, the screen 130 has an upper end connected to the winding pipe 120 so that the screen 130 can be wound and unwound. A weight bar 131 is attached to the lower end of the screen 130.

(Rotating shaft 140)
The rotary shaft 140 transmits the rotation of the pulley 162 to the winding pipe 120. As shown in FIG. 2A, the rotating shaft 140 is rotatably supported by the first case 160 fixed to the operation side bracket 110-1. Further, as shown in FIG. 2B, an insertion hole 140a having a rectangular cross section is formed in the axial center of the rotary shaft 140 so as to extend in the axial direction. The take-up shaft 121 is attached to the insertion hole 140a and can rotate integrally.

(Switching means 150)
The switching means 150 restricts the rotation of the rotary shaft 140 when the take-up shaft 121 is not attached to the rotary shaft 140, and allows the rotation of the rotary shaft 140 when the take-up shaft 121 is attached to the rotary shaft 140. To do. As shown in FIG. 2, the switching means 150 includes a locking portion 151 provided on the first case 160 fixed to the operation side bracket 110-1 and a locking portion 151 provided on the rotating shaft 140. Engageable part 152 that can be engaged, engaging part 151 and engaged part 152, and engaging part 151 and engaged part 152 that can be engaged or disengaged. The engaging member 153 restricts the rotation of the rotary shaft 140 when the locking portion 151 and the locked portion 152 are locked, and the locking portion 151 and the locked portion 152 are connected to each other. When the lock is released, the rotation shaft 140 is allowed to rotate.

As shown in FIG. 2A, the locking portion 151 is provided on the side of the first case 160 facing the rotating shaft 140. As shown in FIG. 2B, the locking portion 151 is a groove having a rectangular cross section that extends in the axial direction from the vicinity of the end portion of the rotary shaft 140, and is formed at one position in the circumferential direction.

As shown in FIG. 2A, the locked portion 152 is formed to extend in the axial direction from the vicinity of the end of the rotary shaft 140 on the side where the winding shaft 121 is inserted. As shown in FIG. 2B, the locked portion 152 penetrates from the insertion hole 140a to the outer diameter portion at one location in the circumferential direction of the rotary shaft 140.

The engaging member 153 is rotatably connected to the locked portion 152, as shown in FIG. When the winding shaft 121 is not attached to the rotary shaft 140, one end 153a of the engagement member 153 is locked to the locking portion 151, and the other end 153b is inserted into the insertion hole 140a. When the winding shaft 121 is attached to the rotating shaft 140, the engaging member 153 rotates in a direction in which the other end 153b contacts the winding shaft 121 and the locking with the locking portion 151 is released. , Are accommodated in the locked portion 152.

The configuration of the roll screen 100 according to the present embodiment has been described above. Next, the operation of the roll screen 100 of this embodiment will be described with reference to FIG. 3 in addition to FIG. 2. 3A and 3B are views for explaining the operation of the roll screen 100, FIG. 3A is a partial cross-sectional view seen from the front, and FIG. 3B is a cross-sectional view taken along the line BB of FIG.

Before the winding shaft 121 is attached to the rotary shaft 140, as shown in FIG. 2, in the switching means 150, one end 153a of the engaging member 153 is locked to the locking portion 151 and the other end 153b is the insertion hole. It is in a state of being inserted into 140a. The rotation of the rotating shaft 140 is restricted because the engaging member 153 is connected to the locked portion 152.

When mounting the take-up shaft 121, the take-up shaft 121 is inserted into the insertion hole 140a of the rotary shaft 140 as shown by an arrow C in FIG. Then, the other end 153b of the engaging member 153 comes into contact with the winding shaft 121, and engages in the direction in which the engagement with the engagement portion 151 is released, as shown by the arrow D in FIG. The member 153 rotates. When the winding shaft 121 is completely inserted into the insertion hole 140 a and attached to the rotating shaft 140, the engaging member 153 is housed in the locked portion 152. Therefore, the rotating shaft 140 is rotatable and the operation chain 163 is operable, as shown by the arrow E in FIG. 3B.

(Effects of the first embodiment)
As described above, according to the present embodiment, the winding shaft 121 is not accurately attached to the rotary shaft 140 by providing the switching unit 150 capable of switching the regulation or the allowance of the rotation of the rotary shaft 140 ( If it is erroneously attached), the rotation of the rotary shaft 140 is restricted. Therefore, the accurate attachment of the take-up pipe 120 and the bracket 110 can be mechanically confirmed, so that the take-up pipe 120 can be prevented from falling.

Further, by engaging or releasing the engagement member 153 with the locking portion 151 and the locked portion 152, the locking portion 151 and the locked portion 152 are locked or unlocked. Then, the rotation of the rotating shaft 140 can be restricted or permitted.

The engaging member 153 does not rotate unless it is attached to the rotating shaft 140 until the winding shaft 121 comes into contact with the engaging member 153. Therefore, it is possible to prevent the rotation shaft 140 from rotating when the winding shaft 121 is not attached to the rotation shaft 140.

(Second embodiment)
The configuration of the roll screen 200 according to this embodiment will be described with reference to FIG. FIG. 4 is a diagram showing the configuration of the roll screen 200 of this embodiment. This embodiment is different from the first embodiment in the configuration of the operation side bracket 210-1. In the present embodiment, points different from the first embodiment will be mainly described. Constituent elements having substantially the same functional configuration are designated by the same reference numerals, and duplicate description will be omitted.

The roll screen 200 of this embodiment will be described with reference to FIG. The roll screen 200 further includes a support member 211 fixed to a roll screen attachment target such as a wall or a window frame, and the operation side bracket 210-1 is supported by the support member 211 so as to be relatively movable.

The support member 211 includes a recess 211a into which the tip of the operation side bracket 210-1 is inserted. Saw-tooth-shaped position adjusting means 211b and 210-1a are formed on the facing surfaces of the recess 211a and the tip of the operation side bracket 210-1 so as to mesh with each other. The position where the position adjusting means 211b of the recess 211a and the position adjusting means 210-1a of the operation side bracket 210-1 are meshed can be changed. By moving the operation side bracket 210-1 and changing the position where the position adjusting means 211b of the recess 211a and the position adjusting means 210-1a of the operation side bracket 210-1 mesh with each other, the position of the operation side bracket 210-1 is changed. Can be adjusted.

(Effect of the second embodiment)
As described above, according to the present embodiment, the operation side bracket 210-1 is moved to the left and right with respect to the support member 211 and the position adjustment means 210-1a and the position adjustment means 211b are engaged with each other. The position of the bracket 210-1 can be adjusted and fixed. Therefore, it is possible to easily adjust the position of the operation side bracket 210-1 without requiring the action of removing the screw unlike the fixing by the screw. By allowing the position of the operation side bracket 210-1 to be adjusted in this manner, the winding shaft 221 can be adjusted so as not to be incompletely inserted into the rotation shaft 240, and the winding shaft 221 is rotated. It can be accurately attached to the shaft 240.

(Third Embodiment)
The configuration of the roll screen 300 according to this embodiment will be described with reference to FIG. 5A and 5B are views showing the configuration of the roll screen 300 of the present embodiment, where FIG. 5A shows a state in which the engagement member 353 is locked to the locking portion 351 at the top, and FIG. The state where the member 353 is locked to the horizontal locking portion 351 is shown. The present embodiment is different from the first embodiment in that a plurality of locking portions 351 are provided at a plurality of places, and the present embodiment will be described focusing on the points different from the first embodiment. Constituent elements having substantially the same functional configuration are designated by the same reference numerals, and duplicate description will be omitted.

The operation side bracket 310-1 of this embodiment is substantially the same as the operation side bracket 110-1 of the first embodiment.

The roll screen 300 of this embodiment will be described with reference to FIG. As shown in FIG. 5, eight locking portions 351 are provided in the first case 360 at equal intervals in the rotation direction of the rotating shaft 340. For example, as shown in FIG. 5A, when the attachment of the winding shaft 321 to the rotary shaft 340 is released when the engaging member 353 is positioned above, the upper locking portion 351 is The engagement member 353 is locked.

In addition, as shown in FIG. 5B, when the winding shaft 321 is released from the rotation shaft 340 when the engaging member 353 is laterally positioned, the horizontal locking portion 351 is engaged. The coupling member 353 is locked. In this way, the engaging member 353 can be easily locked to the locking portion 351 without limiting the position where the winding shaft 321 is dismounted from the rotary shaft 340 to a specific position. The number of locking portions 351 may be designed to be any number.

(Effect of the third embodiment)
As described above, according to the present embodiment, by providing the locking portions 351 at a plurality of positions, the engaging member 353 can be engaged with the locking portions 351 regardless of the rotation angle of the rotating shaft 340. Therefore, the rotation of the rotating shaft 340 can be restricted.

(Fourth Embodiment)
The configuration of the roll screen 400 according to this embodiment will be described with reference to FIG. FIG. 6 is a diagram showing a configuration of the roll screen 400 of the present embodiment, (a) shows a state before the winding shaft 421 is attached to the rotation shaft 440, and (b) shows the rotation of the winding shaft 421. The state of being attached to the shaft 440 is shown. The present embodiment mainly differs from the first embodiment in the configuration of the switching means 450. In the present embodiment, points different from the first embodiment will be mainly described. Constituent elements having substantially the same functional configuration are designated by the same reference numerals, and duplicate description will be omitted.

The roll screen 400 of this embodiment will be described with reference to FIG. In the switching means 450, as shown in FIG. 6, the engaging member 453 is provided on the first case 460 so as to be slidable in the radial direction. One end 453a of the engaging member 453 projects outward from the upper portion of the first case 460 and contacts the outer periphery of the first case 460 to restrict further downward movement. The state of the engaging member 453 is visible from the outside.

As shown in FIG. 6A, the other end 453b of the engaging member 453 is inserted into the locking portion 451 and is locked to the locked portion 452 when the winding shaft 421 is not mounted on the rotation shaft 440. Inserting. Further, as shown in FIG. 6B, the other end 453b of the engaging member 453 is disengaged from the locked portion 452 when the winding shaft 421 is mounted on the rotation shaft 440 and is locked by the locking portion 451. Housed in.

In the first embodiment, the locked portion 452 is formed up to the vicinity of the end of the rotary shaft 140 on the side where the winding shaft 121 is inserted, but in the present embodiment, as shown in FIG. The end of the rotary shaft 440 on the side where the winding shaft 421 is inserted is formed.

The winding shaft 421 is provided with a pressing piece 421a that presses the engaging member 453 so as to slide. As shown in FIG. 6A, the pressing piece 421 a projects above the winding shaft 421 and has a size that can be inserted into the locked portion 452 of the rotation shaft 440. As shown in FIG. 6B, the pressing piece 421 a has the upper end located at the same position as the outer circumference of the rotating shaft 440 when inserted into the locked portion 452.

The configuration of the roll screen 400 according to the present embodiment has been described above. The operation of the roll screen 400 will be described below with reference to FIG. Before the winding shaft 421 is attached to the rotary shaft 440, the switching means 450 is in a state in which the other end 453b of the engaging member 453 is inserted into the locked portion 452, as shown in FIG. 6A. ing. Therefore, the rotation shaft 440 comes into contact with the other end 453b of the engagement member 453, and the rotation is restricted.

When mounting the winding shaft 421, as shown by an arrow C in FIG. 6A, the winding shaft 421 is inserted into the insertion hole 440a of the rotating shaft 440 so that the pressing piece 421a is inserted into the locked portion 452. Insert. Then, the pressing piece 421a presses the other end 453b of the engaging member 453, and as shown in FIG. 6B, the engaging member 453 slides so as to be disengaged from the locked portion 452. When the winding shaft 421 is completely inserted into the insertion hole 440a and attached to the rotating shaft 440, the pressing piece 421a completely pushes the other end 453b of the engaging member 453 up to the outside of the rotating shaft 440. Therefore, the other end 453b of the engaging member 453 is detached from the locked portion 452 and is housed in the locking portion 451, and the rotation shaft 440 becomes rotatable.

(Effect of the fourth embodiment)
As described above, according to the present embodiment, the engagement member 453 moves in the radial direction of the rotating shaft 440, so that the engagement and disengagement of the locking portion 451 and the locked portion 452 can be performed. You can switch.

Further, since the winding shaft 421 is provided with the pressing piece 421a that presses the engaging member 453 so as to slide, a mechanism for sliding the engaging member 453 is separately provided in addition to the winding shaft 421. No need to provide. Further, when the winding shaft 421 is attached to the rotating shaft 440, one end 453a of the engaging member 453 projects upward, and the state of the engaging member 453 becomes visible from the outside, so that the winding shaft 421 rotates. It can be grasped that it is completely attached to 440.

(Fifth Embodiment)
The configuration of the roll screen 500 according to this embodiment will be described with reference to FIG. 7. FIG. 7 is a diagram showing a configuration of the roll screen 500 of the present embodiment, (a) shows a state before the winding shaft 521 is attached to the rotation shaft 540, and (b) shows the rotation of the winding shaft 521. The state of being attached to the shaft 540 is shown. The present embodiment mainly differs from the fourth embodiment in the configuration of the switching means 550. In the present embodiment, points different from the fourth embodiment will be mainly described. Constituent elements having substantially the same functional configuration are designated by the same reference numerals, and duplicate description will be omitted.

The roll screen 500 of this embodiment will be described with reference to FIG. 7. In the switching means 550, as shown in FIG. 7, the locked portion 552 has an end on the side where the winding shaft 521 of the rotary shaft 540 is inserted, like the locked portion 152 of the first embodiment. It is formed up to the vicinity of the part. Further, the winding shaft 521 is not provided with the pressing piece 421a of the fourth embodiment, and has the same configuration as the winding shaft 121 of the first embodiment.

As shown in FIG. 7, a sliding member 554 is provided in the insertion hole 540a and the locked portion 552 of the rotating shaft 540. The upper end 554a of the sliding member 554 constitutes the outer peripheral surface of the rotating shaft 540 together with the rotating shaft 540. The sliding member 554 is slidable in the axial direction of the rotating shaft 540 from the entrance end 552a of the locked portion 552 to the engaging member 553. The sliding member 554 is separated from the engaging member 553 when located at the entrance-side end 552 a of the locked portion 552. A spring 555 that urges the sliding member 554 in a direction in which the winding shaft 521 is inserted is provided between the bottom portion 540b of the rotating shaft 540 and the sliding member 554. The sliding member 554 can be pressed by the winding shaft 521. When the upper end 554a of the sliding member 554 comes into contact with the other end 553b of the engaging member 553, the upper end 554a is pressed to slide the engaging member 553 upward.

When the winding shaft 521 is inserted into the insertion hole 540a, the sliding member 554 is pressed by the winding shaft 521 and slides toward the bottom portion 540b of the rotating shaft 540, and the winding shaft 521 moves from the insertion hole 540a. When pulled out, the spring 555 slides in the direction of the opening 540c at the entrance of the rotary shaft 540. The upper end 554a of the sliding member 554 presses the other end 553b of the engaging member 553 to slide the engaging member 553 upward.

The configuration of the roll screen 500 according to the present embodiment has been described above. The operation of the roll screen 500 will be described below with reference to FIG. Before the winding shaft 521 is attached to the rotary shaft 540, the sliding member 554 is located at the entrance side end 552a of the locked portion 552 as shown in FIG. 554 is separated from the engaging member 553. Therefore, the other end 553b of the engaging member 553 is in a state of being inserted into the locked portion 552. Therefore, the rotation shaft 540 comes into contact with the other end 553b of the engagement member 553 to restrain the rotation.

When mounting the winding shaft 521, the winding shaft 521 is inserted into the insertion hole 540a of the rotating shaft 540 as shown by an arrow C in FIG. Then, the winding shaft 521 presses the sliding member 554, and the sliding member 554 moves toward the engaging member 553 as shown in FIG. 7B. When the upper end 554a of the sliding member 554 comes into contact with the other end 553b of the engaging member 553, the engaging member 553 slides so as to separate from the locked portion 552.

When the winding shaft 521 is completely inserted into the insertion hole 540a and attached to the rotating shaft 540, the upper end 554a of the sliding member 554 pushes the other end 553b of the engaging member 553 completely to the outside of the rotating shaft 540. Therefore, the other end 553b of the engaging member 553 is detached from the locked portion 552 and accommodated in the locking portion 551, and the rotation shaft 540 becomes rotatable.

(Effects of the fifth embodiment)
As described above, according to the present embodiment, since the sliding member 554 that moves the engaging member 553 is arranged on the rotating shaft 540 so as to be slidable in the axial direction, the sliding member 554 ensures the engaging member 553. Can be slid on. Further, when the winding shaft 521 is attached to the rotating shaft 540, one end 553a of the engaging member 553 protrudes upward so that the state of the engaging member 553 can be visually checked from the outside, and the winding shaft 521 rotates the rotating shaft 521. It can be grasped that it is completely attached to 540.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. It is obvious to those skilled in the art that various changes or modifications can be conceived within the scope described in the claims, and naturally, these also belong to the technical scope of the present invention. Understood.

For example, in the above embodiment, the switching means is an engagement member capable of locking or unlocking the locking portion provided on the case fixed to the bracket and the locked portion provided on the rotating shaft. However, the present invention is not limited to this example. The switching means restricts rotation of the rotating shaft when the winding shaft is not mounted on the rotating shaft, and allows switching of the rotating shaft when the winding shaft is mounted on the rotating shaft. , Can be designed arbitrarily.

Further, in the first embodiment, the engaging member 153 is rotatably connected to the rotating shaft 140, and when the winding shaft 121 is mounted on the rotating shaft 140, the engaging member 153 contacts the winding shaft 121 and engages. Although it is configured to rotate in the direction in which the engagement with the stopper 151 is released, the present invention is not limited to this example. The switching means restricts rotation of the rotating shaft when the winding shaft is not mounted on the rotating shaft, and allows switching of the rotating shaft when the winding shaft is mounted on the rotating shaft. Good. For example, the engagement member may slide in the axial direction of the rotating shaft so as to switch between regulation and allowance of rotation. The same applies to the second and third embodiments.

Further, in the second embodiment, the operation side bracket 210-1 is supported by the support member 211 attached to the attachment target, and the operation side bracket 210-1 and the support member 211 are configured to be relatively movable. However, the present invention is not limited to this example. Any design can be used as long as the position of the operating side bracket with respect to the winding shaft can be changed.

Further, in the third embodiment described above, eight locking portions 351 of the first case 360 are provided in the rotation direction of the rotating shaft 340, but the present invention is not limited to this example, and the locking portions 351 are It can be designed in any number.

Further, in the fourth embodiment described above, the winding shaft 421 is provided with the pressing piece 421a that presses the engaging member 453 so as to slide, but the present invention is not limited to this example. Any design can be used as long as it is a structure that pushes the engagement member so as to slide.

In addition, in the fifth embodiment, the switching unit 550 includes the sliding member 554 that is disposed in the locked portion 552 of the rotating shaft 540 and slides in the axial direction, and the winding shaft 521 is the rotating shaft. Although the sliding member 554 is configured to slide in the axial direction when mounted on the 540 to slide the engaging member 553 so as to disengage from the locked portion 552, the present invention is not limited to this example. ..

The contents of the embodiment, the modified example, and the applied example described above can be appropriately combined and implemented.

100, 200, 300, 400, 500 Roll screen 110 Bracket 110-1, 210-1, 310-1 Operation side bracket 110-2 Non-operation side bracket 120 Winding pipe 121, 221, 321, 421, 521 Winding shaft 130 screen 131 weight bar 140, 240, 340, 440, 540 rotating shaft 140a, 440a, 540a insertion hole 150, 450, 550 switching means 151, 351, 451, 551 locking part 152, 452, 552 locked part 153 353, 453, 553 Engaging members 153a, 453a, 553a One end 153b, 453b, 553b Other end 160, 360, 460 1st case 161 2nd case 162 Pulley 163 Operation chain 164 1st connecting member 165 2nd connection Member 166 Clutch spring 167 Clutch drum 211 Support member 210-1a, 211b Position adjusting means 211a Recess 421a Pressing piece 540b Bottom 540c Opening 552a Entrance side end 554 Sliding member 554a Upper end

Claims (9)

Bracket and
A winding pipe rotatably supported by the bracket,
A screen, one end of which is connected to the winding pipe so that the winding pipe can be wound and unwound,
A rotation shaft rotatably supported by the bracket,
A winding shaft that rotates integrally with the winding pipe and rotates integrally with the rotating shaft by being attached to the rotating shaft.
The rotation of the rotating shaft is regulated when the winding shaft is not mounted on the rotating shaft, and the rotation of the rotating shaft is switchable when the winding shaft is mounted on the rotating shaft. Switching means,
A roll screen characterized by having. The switching means is
A locking portion provided on the case fixed to the bracket,
A locked portion which is provided on the rotating shaft and can be locked to the locking portion,
An engaging member that is engageable with the locking portion and the locked portion, and that can lock or unlock the locking portion and the locked portion,
Consists of
The engagement member restricts rotation of the rotary shaft when the locking portion and the locked portion are locked, and when the locking portion and the locked portion are unlocked, The roll screen according to claim 1, wherein the roll screen is allowed to rotate. The engagement member is rotatably connected to the rotation shaft, and when the winding shaft is attached to the rotation shaft, the engagement member comes into contact with the winding shaft to release the engagement with the engagement portion. The roll screen according to claim 2, wherein the roll screen is rotated in a predetermined direction. The roll screen according to claim 2 or 3, wherein a plurality of the locking portions are provided in a rotation direction of the rotation shaft. The engagement member is provided in the case so as to be movable in the radial direction of the rotating shaft,
The engaging member is inserted into and disengaged from the locked part so that the locking part engages the locking part and the locked part when inserted into the locked part. The roll screen according to claim 2, wherein the locking portion and the locked portion are unlocked when stopped and released from the locked portion. The roll screen according to claim 5, wherein the winding shaft is provided with a pressing piece that presses the engaging member so as to separate from the locked portion. The switching means includes a sliding member that is arranged on the rotating shaft and slides in the axial direction. When the winding shaft is attached to the rotating shaft, the sliding member slides in the axial direction. The roll screen according to claim 5, wherein the engaging member is moved so as to be separated from the locked portion. Further comprising a support member fixed to the roll screen attachment target,
The said bracket is supported by the said support member so that relative movement is possible, The roll screen in any one of Claims 1-7 characterized by the above-mentioned. Bracket and
A winding pipe rotatably supported by the bracket,
A screen, one end of which is connected to the winding pipe so that the winding pipe can be wound and unwound,
A roll screen having
A winding shaft that is integrally rotated with the winding pipe and is rotatably attached to the bracket,
Switching means for switching rotation of the winding shaft when the winding shaft is not mounted on the bracket, and for permitting rotation of the winding shaft when the winding shaft is mounted; ,
A roll screen characterized by having.