JP3122707B2 - Roll screen - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll screen.

[0002]

2. Description of the Related Art A conventional screen winding upper limit position setting device is disclosed in Japanese Utility Model Publication No. 58-21919 and Japanese Utility Model Publication No. 3-16400. That is, the screen winding upper limit position setting device disclosed in Japanese Utility Model Publication No. 58-21919 is a stationary bolt disposed and fixed on a rotating shaft of a screen winding cylinder, and is screwed to the stationary bolt. A moving piece connected to the winding cylinder and movable and rotatable in the axial direction of the stationary bolt, a brake plate mounted on the stationary bolt and pressed against the moving piece, and a braking plate on the stationary bolt axis. Arranged to polymerize on
And a pressure contact body which resiliently biases and presses the brake plate in the direction of the moving frame. To set the winding upper limit of the screen, first, remove the rotating cylinder from the bracket, rotate and screw the moving piece with fingers or the like, press it fully against the brake plate, and roll it up to the desired position. This is carried out by mounting in a rotating cylinder. Thereby, when the screen that has been pulled down is wound up to a desired position, the moving piece, the brake plate,
The braking by the press contact body or the like is performed. Further, a screen winding upper limit position setting device disclosed in Japanese Utility Model Publication No. 3-16400 discloses a fixed shaft for rotatably supporting a roll pipe, a bolt provided on an extension shaft portion of the fixed shaft,
A moving frame that is mounted on the bolt as a nut and rotates on the roll pipe to move on the bolt, and a brake that brakes the moving frame, wherein the brake is provided with a brake drum provided on an extension of the fixed shaft. A coil spring, which is wrapped around the brake drum so that it can be loosened and loosened, and has one end locked to the extension shaft of the fixed shaft and the other end free, and an engagement portion provided on the coil spring side of the movable frame. The rotation of the roll pipe is stopped by engaging the engaging portion of the movable frame with the other end of the coil spring and fastening the coil spring to the brake drum. To set the screen take-up upper limit position, first remove the roll pipe from the bracket and move the moving frame to a position where the engaging portion engages the other end of the coil spring to fix the coil spring to the brake drum. In this state, the screen is attached to a roll pipe wound up to a desired position. Thus, even if the roll pipe rotates rapidly, when the screen is wound up to the above desired position and stopped, the shock is absorbed by the coil spring via the moving frame, so that the roll pipe can be stopped quietly. Can be.

[0003]

However, the above-mentioned conventional screen winding upper limit position setting device disclosed in Japanese Utility Model Publication No. 58-21919 is disclosed in Japanese Utility Model Publication No. Sho 58-21919.
In both cases disclosed in Japanese Patent Application Publication No. 16400, when setting the upper limit position of the screen, the rotating cylinder or the roll pipe must be removed from the bracket, so that the setting operation of the upper limit position of the screen is very troublesome. There is a problem. To solve the above problem, there is one disclosed in Japanese Patent Publication No. 5-38839. The screen winding upper limit position setting device shown therein includes a fixed shaft rotatably supporting a roll pipe of a roll blind, a bolt provided on an extension portion extending inward in the axial direction of the fixed shaft, and a nut attached to the bolt. It consists of a moving top that rotates on the bolt by rotating with the roll pipe, and a coil spring that regulates the movement of the moving top. The brake drum is fixed to the bracket, and the brake coil spring is relaxed around the brake drum. Wrapped tightly, loosely fit the notched sector with a part of the circumference around the coil spring as a notch, loosely fit the dial on the outer circumference of the sector, and cut the projecting portions at both ends of the braking coil spring. Insert into the notch, insert the inner peripheral protrusion provided on the inner periphery of the dial into the coil spring both ends protrusion in the sector notch, and use the retaining ring And interior color to the brake drum so as not to be able to get out of the part, to secure the sector to color,
An outer end portion of a fixed shaft extending axially outward from the roll pipe is fixed to an axial hole passing through the axis of the sector and the collar to support the roll pipe. When the sector is to be rotated from the stationary bolt side, the sector pushes the protruding end of the brake coil spring in a direction in which the brake coil spring is tightened, so that the brake coil spring is fastened to the brake drum and stops the rotation of the sector. On the other hand, when you turn the dial,
As the inner circumferential projection of the dial pushes the projecting end of the brake coil spring in the direction in which the brake coil spring expands, the brake coil spring is expanded and rotates the sector or bolt with the dial. Therefore, the setting of the upper limit position of the screen can be performed by turning the dial and adjusting the position of the moving frame on the bolt. Thereby, it is possible to set the winding upper limit position of the screen with the roll pipe attached to the bracket. However, the one disclosed in Japanese Patent Publication No. 5-38839 also incorporates a braking coil spring built into the dial in order to prevent the rotation force of the roll pipe from being transmitted to the bolt via the moving top and to prevent the bolt from rotating. Therefore, in order to turn the dial, a force for pushing and expanding the brake coil spring is required. Also, in order to set the upper winding position of the screen, the dial must be rotated many times. However, the roll screen generally has a problem in that it is difficult to keep rotating the dial by applying force since the width and the radial dimension of the dial are reduced because the appearance is emphasized.

[0004]

According to the present invention, a bolt shaft is fixed to a side plate, and a guide member which rotates together with the nut member guides the nut member in the axial direction to move the bolt shaft. By operating the operation dial between a state in which the pipe receiver and the guide member fixed to the unit can be integrally rotated and a state in which the guide member can be relatively rotated, and fixing the main shaft of the stopper device to the bolt shaft, To solve the above problem. That is, the roll screen of the present invention includes a side plate (14) provided at both ends of the set frame (12) and a side plate (1).
4) The winding pipe (1) whose both ends are rotatably supported
6), a screen (18) having one end connected to the winding pipe (16) so as to be wound and unwound, and a force for constantly rotating the screen (18) in the winding direction of the winding pipe (16). It has a take-up spring and a stopper spindle (49), and switches between a state in which the take-up pipe (16) and the stopper spindle (49) are fastened and a state in which the fastening is released. A stopper device (48) having a possible clutch mechanism, and a winding upper position setting device (70) capable of setting a winding upper position of the screen (18) on the winding pipe (16), The winding upper limit position setting device (70) is fixed to the side plate (14) and the stopper device (4).
8) The bolt shaft (36) to which the stopper main shaft (49) is integrally connected, a nut member (40) screwed into the bolt shaft (36) so as to be movable in the axial direction, and a nut member (40). A guide member (34) rotatable together with the nut member (40) and capable of guiding the axial movement of the nut member (40); The restricting device (42), the pipe receiver (32) fixed to the winding pipe (16), the pipe receiver (32) and the guide member (34) can be integrally rotated and relatively rotatable. A control pawl (30) for switching between the two states, an operation dial (26) capable of switching the control pawl (30) to the above two positions, and a relative rotation of the operation dial (26) by a predetermined angle. After that, it will rotate together It is connected to the control pawl (3
And a guide member receiver (28) to which the guide member (34) is fixed while guiding the switching of (0). In addition, the code | symbol in a parenthesis shows the corresponding member of the Example mentioned later.

[0005]

The method of setting the upper limit position for winding the screen according to the present invention will be described. The control pawl is located at a position where the pipe receiver and the guide member can be integrally rotated.
In the roll screen in which the nut member is not in contact with the regulating device, first, the operation dial is rotated in a predetermined direction. As a result, the position of the control pawl is switched, and the pipe receiver and the guide member can be relatively rotated. Next, when the operation dial is further rotated in the predetermined direction, the guide member receiving member, the guide member and the nut member rotate together with the operation dial, so that the nut member is guided by the guide member and moves on the bolt shaft in the direction of the regulating device. Move to. When the nut member comes into contact with the regulating device, the operation dial cannot be further moved in the axial direction, so that further rotation of the operation dial is regulated. Then the screen is pulled down. Thereby, the fastening of the take-up pipe and the stopper main shaft is released by the stopper device, the take-up pipe and the pipe receiver rotate in the screen unwinding direction, and the screen is unwound. When the screen is lowered to a desired position and the hand is released, a rotational force in the screen winding direction is applied to the winding pipe by the elastic force of the winding spring. For this reason, the winding pipe and the stopper main shaft are fastened by the stopper device, and the rotation of the winding pipe is restricted. Therefore, the screen will stop at the desired position. Next, the operation dial is rotated in a direction opposite to the predetermined direction. As a result, the position of the control pawl is switched, and the pipe receiver and the guide member are brought into a state in which they can rotate integrally. Thereby, the winding upper limit position of the screen is set. As described above, first, the operation dial is operated to switch the position of the control pawl, so that the pipe receiver and the guide member can be relatively rotated, and then the operation dial is further operated to move the nut member to the regulating device. After moving the screen to a contact position, and then lowering the screen to a desired position and then releasing the hand, the rotation of the winding pipe is restrained by the stopper device, the screen is stopped, and then the operation dial is turned. By operating and switching the position of the control pawl to make the pipe receiver and the guide member integrally rotatable, the upper winding position of the screen can be set. Work can be performed easily with one hand.

[0006]

FIG. 1 shows a roll screen 1 embodying the present invention.
FIG. 2 is a partial cross-sectional view of FIG.
0 is an exploded perspective view. Roll screen 1
Side plates 14 are provided at both ends of the set frame 12 for attaching the “0” to the window frame (the side plate at the right end in FIG. 1 is not shown). A plate cover 66 is fitted to the vertical portion 14a of the side plate 14 from below in FIG. Winding pipe 16
Is rotatably supported by the side plate 14. One end of the screen 18 is connected to the winding pipe 16 by a first screen stopper plate 64 shown in FIG. A force in the direction of winding the screen 18 is constantly applied to the winding pipe 16 by a winding spring (not shown).
The other end of the screen 18 is connected to the weight bar 20 by a second screen stop plate 62 shown in FIG. As shown in FIG. 3, a pull cord 80 hangs down from the center of the weight bar 20 in the longitudinal direction, and a knob 82 is attached to a lower end of the pull cord 80. A winding upper limit position setting device 70 capable of setting a winding upper limit position of the screen 18 is provided at a left end portion in FIG. The winding upper limit position setting device 70 includes a side plate 14, a bearing 22, a rivet 23, a collar 24, an operation dial 26, and a guide member receiver 2.
8, a control pawl 30, a pipe receiver 32, a guide member 34, a bolt shaft 36, a C ring 38, a nut member 40, a regulating device 42, a stopper device 48, and a rivet 68. As shown in FIG.
As shown in FIG.
b is formed. The bearing 22 has a disc-shaped large diameter portion 22.
a, a middle diameter portion 22b having a smaller diameter than the large diameter portion 22a and projecting in the axial direction concentrically therewith; a small diameter portion 22c having a smaller diameter than the middle diameter portion 22b and projecting in the axial direction concentrically with this And The bearing 22 is formed with a support hole 22d having a rectangular cross section that penetrates the axis of the bearing. In the bearing 22, two through holes 22e are formed at positions corresponding to the through holes 14b of the side plate 14. The bearing 22 is fixed to the side plate 14 by inserting a rivet 23 into the through hole 14b of the side plate 14 and the through hole 22e of the bearing 22 from the left side of the side plate 14 in FIG. The operation dial 26 has a ring shape, and has three guide grooves 26a formed at predetermined intervals in the circumferential direction at predetermined intervals in the circumferential direction. Also, between the adjacent guide grooves 26a of the operation dial 26, a gentle "S" -shaped cam groove 26b is formed in which the left side in FIG. 2 is inclined toward the outer diameter part and the right side is inclined toward the inner diameter part. ing. Operation dial 2
6 is fitted to the middle diameter portion 22b of the bearing 22 so as to be relatively rotatable. The guide member receiver 28 has a cylindrical shape with a flange. In the flange 28a of the guide member receiver 28, three notches 28b are formed at predetermined intervals in the circumferential direction, and the cylindrical portion 28b of the flange 28a is formed.
An adjacent notch 28 is formed on the outer peripheral edge of the surface on the side opposite to the d side.
"L" -shaped protrusions 28c are respectively formed between b. In addition, at the symmetric position of the inner diameter portion of the collar portion 28a,
Each of the engagement grooves 28f is formed. As shown in FIG. 1, the end of the cylindrical portion 28d of the guide member receiver 28 projects in the inner diameter direction to form a small-diameter portion 28e. The guide member receiver 28 has a protruding portion 28c inserted into the guide groove 26a of the operation dial 26 so as to be guided by the guide groove 26a so as to be movable by a predetermined angle in the circumferential direction. 24 through bearing 22
The small-diameter portion 22c and the small-diameter portion 28e are rotatably fitted to a bolt shaft 36 described later. Three control pawls 30 are provided.
The sliding portion 30a includes a continuous mountain-shaped engaging portion 30b provided on one surface of the sliding portion 30a, and a cam follower 30c orthogonal to the other surface of the sliding portion 30a. As described above, the three control pawls 30 are provided so that these sliding portions 30a are provided in the respective notches 28 of the guide member receiver 28.
b are respectively fitted so as to be movable in the radial direction while being guided by them, and the respective cam followers 30c are connected to the respective cam grooves 26b of the operation dial 26.
Are movably inserted while being guided by these. The pipe receiver 32 has a cylindrical large-diameter portion 32a, and a cylindrical small-diameter portion 32b having a smaller diameter than the large-diameter portion 32a and projecting concentrically and axially. Small diameter part 32
A gear portion 32c is formed at the end of the large-diameter portion 32a on the side of the large-diameter portion 32b so as to protrude in the axial direction into the internal space of the large-diameter portion 32a and to protrude continuously in the radial direction over the entire outer periphery thereof. Have been. The pipe receiver 32 has a large diameter portion 32a.
Is rotatably fitted to the outer diameter of the flange 28a of the guide member receiver 28. The pipe receiver 32 is fixed to the winding pipe 16 so as to rotate integrally therewith. The pair of guide members 34 have a partially cylindrical shape, and projecting ridges 34 a projecting in the circumferential direction (the nut members 4, which will be described later)
0) are formed over substantially the entire length in the axial direction. Further, engagement portions 34b protruding in the outer diameter direction are formed at the left end portions in FIG. 2 of the pair of guide members 34, respectively. The pair of guide members 34 have their left ends in FIG. 2 inserted into the internal spaces of the pipe receiver 32 and the guide member receiver 28, respectively.
The engaging portions 34b are respectively engaged with the engaging grooves 28f of the guide member receiver 28, and the collar 24 is fixed to the guide member receiver 28 by fitting the collar 24 into the inner diameter portion of the cylindrical portion 28d of the guide member receiver 28. . The bolt shaft 36 has a rectangular portion 36a formed at one end thereof and a columnar portion 36b formed at the other end thereof. The cylindrical portion 36b is formed with a through hole 36c penetrating in a radial direction thereof. The bolt shaft 36 has a square portion 36a that
Is fixed to the bearing 22 by being non-rotatably fitted into the support hole 22d. The C-ring 38 is fitted to the bolt shaft 36 adjacent to the small diameter portion 28e of the guide member receiver 28. Thus, the movement of the guide member receiver 28 in the axial direction is restricted. The nut member 40 is
Four grooves 40a having a shape corresponding to the protrusions 34a of the guide member 34 are formed in the outer diameter portion thereof. Nut member 4
Numeral 0 is screwed into the bolt shaft 36 so as to be movable in the axial direction, and the groove 40a is fitted to the ridge 34a of the guide member 34 so as to be movable in the axial direction, as shown in FIG. The regulating device 42 includes three flat washers 44 and 2
It has two spring washers 46, and the spring washers 46 are respectively arranged between two adjacent flat washers 44. The restricting device 42 is fitted to the bolt shaft 36 so as to be slightly movable in the axial direction and relatively rotatable, adjacent to the right end in FIG. 1 of the guide member 34. The stopper device 48 includes a stopper main shaft 49, a grooved drum 50, and a stopper case 5.
2, a stopper case cap 54, a clutch spring 56 and a ball 58. The stopper main shaft 49 includes a large-diameter cylindrical portion 49a protruding from the outside of the stopper case 52, a small-diameter cylindrical portion 49b arranged in the stopper case 52, and a flange 49e formed at the tip of the large-diameter cylindrical portion 49a. have. In the large-diameter cylindrical portion 49a,
A through hole 49c penetrating in the radial direction is formed, and a hole 49d to which the cylindrical portion 36b of the bolt shaft 36 can be fitted is formed in the axial center of the through hole 49c. The stopper main shaft 49 has a cylindrical portion 36b of the bolt shaft 36 fitted in a hole 49d of the large-diameter cylindrical portion 49a, and a rivet 68 is formed between the through-hole 49c of the large-diameter cylindrical portion 49a and the through-hole 36c of the cylindrical portion 36b. By penetrating, it is integrally connected to the bolt shaft 36. The grooved drum 50 is rotatably fitted to the outer diameter portion of the small-diameter cylindrical portion 49b of the stopper main shaft 49, and has a groove 50 for guiding the movement of the ball 58 on the outer peripheral surface.
a is formed. The stopper case 52 includes the ball 5
8 is rotatably fitted to an outer diameter portion of the grooved drum 50 with the outer diameter portion fixed to the winding pipe 16 so as to rotate integrally therewith. The grooved drum 50 and the stopper case 52 are moved by a ball 58 guided and guided by the groove 50a by their relative rotation.
Depending on the position, the connection may be integrally rotatable or the connection may be released. The stopper case cap 54 is provided at one end of the stopper case 52, and connects the stopper case 52 to the stopper main shaft 49 so as to be relatively rotatable. The clutch spring 56 has a grooved drum 50 at one end.
The grooved drum 50 is provided on the outer diameter portion of the small-diameter cylindrical portion 49b of the stopper main shaft 49, and is connected to the screen 18.
When rotating in the unwinding direction, the diameter of the grooved drum 5 is increased.
However, when the grooved drum 50 rotates in the winding direction of the screen 18,
The diameter is reduced and the grooved drum 50 and the stopper main shaft 49 are fastened.

Next, a method of setting the winding upper limit position of the screen 18 will be described. As shown in FIG. 4, the cam followers 30c of the control pawls 30 are located on the inner diameter side of the cam grooves 26b of the operation dial 26, respectively.
As shown in FIG. 6, the roll screen 10b is engaged with the gear portion 32c of the pipe receiver 32, and the nut member 40 is in the position shown in FIG.
First, the operation dial 26 is rotated clockwise in FIG. Thereby, each control pawl 30
These cam followers 30c are guided by the respective cam grooves 26b of the operation dial 26 and move to the outer diameter side thereof as shown in FIG. 5, and accordingly, the respective sliding portions 30a are guided. As shown in FIG. 7, each of the notches 28 b of the member holder 28 guides the corresponding notch 28 b and moves in the direction of the outer diameter thereof. Are canceled respectively. Therefore, the pipe receiver 32 and the guide member 34 are in a state where they can rotate relative to each other. This allows
Operation dial 26 without rotating take-up pipe 16
Can be rotated. Next, the operation dial 26
4 is further rotated clockwise in FIG. 4, the guide member receiver 28, the guide member 34 and the nut member 4
Since 0 rotates, the nut member 40 is guided by the guide member 34 and moves on the bolt shaft 36 rightward in FIG. When the nut member 40 comes into contact with the regulating device 42, the operation dial 26 cannot be further moved in the axial direction, so that further rotation of the operation dial 26 is restricted. Next, the screen 18 is pulled down. As a result, a rotational force is applied to the winding pipe 16 in the direction in which the screen 18 is unwound. Therefore, the stopper device 48 applies a rotational force to the stopper case 52 in the direction of unwinding the screen 18,
The diameter of the clutch spring 56 expands, and the fastening between the grooved drum 50 and the stopper main shaft 49 is released. This allows
Pipe receiver 32, winding pipe 16, and stopper case 5
2 rotates in the unwinding direction of the screen 18 and the screen 18 is unwound. When the screen 18 is lowered to a desired position shown in FIG. 8 and then released, a rotating force in the winding direction of the screen 18 is applied to the winding pipe 16 by the elastic force of the winding spring. For this reason, the stopper device 48 applies a rotational force in the winding direction of the screen 18 to the grooved drum 50 via the stopper case 52, so that the clutch spring 56 is reduced in diameter and the grooved drum 50 and the stopper main shaft 49 Is concluded. Thereby, via the grooved drum 50 and the stopper case 52,
The rotation of the winding pipe 16 is restricted. Therefore, the screen 18 stops at the desired position. Next, the operation dial 26 is rotated counterclockwise in FIG. As a result, the control pawls 30 move the cam followers 30c to the inner diameter sides thereof by being guided by the respective cam grooves 26b of the operation dial 26, and accordingly, the respective sliding portions 30a are guided. Each of the engaging portions 3 is guided by the respective notch portions 28b of the member receiver 28 and moved in the direction of their inner diameters.
0b is engaged with the gear portion 32c of the pipe receiver 32, respectively. For this reason, the pipe receiver 32 and the guide member 34 can be rotated integrally. Thereby, the winding upper limit position of the screen 18 is set. In this way, by rotating the operation dial 26 in a predetermined direction, the engagement between the respective control pawls 30 and the pipe receiver 32 is released, and the pipe receiver 32 and the guide member 34 are brought into a state in which they can be relatively rotated. Without rotating the winding pipe 16,
By further rotating the operation dial 26 in the predetermined direction, the nut member 40 is moved to a position where it comes into contact with the regulating device 42, the screen 18 is lowered to a desired position, and the hand is released therefrom. The rotation of the take-off pipe 16 is restrained, the screen 18 is stopped at the desired position, and the operation dial 26 is rotated in the direction opposite to the predetermined direction, so that the control pawls 30 and the pipe receivers 32 are respectively engaged. By setting the pipe receiver 32 and the guide member 34 so as to be integrally rotatable, the winding upper limit position of the screen 18 can be set. Can be done.

To raise the winding upper limit position of the screen 18 higher than the once set position, the screen 1
8 is stopped at the set position, and the operation dial 26 is stopped.
Is rotated clockwise in FIG. 4 to disengage the control pawls 30 and the pipe receivers 32, respectively, in the same manner as described above, so that the pipe receivers 32 and the guide members 34 can be relatively rotated. Thereby, the pipe receiver 32 can be rotated without rotating the nut member 40.
Next, the knob 82 is slightly pulled down, and the winding pipe 16 is slightly rotated in the unwinding direction of the screen 18. As a result, the stopper device 48 is slightly rotated in the unwinding direction of the screen 18 together with the winding pipe 16, so that the ball 58 is guided by the groove 50, and the stopper case 52 and the grooved drum 50 Is released. Thereby, the nut member 40 is connected to the regulating device 4.
However, since the pipe receiver 32 and the stopper case 52 are rotatable as described above, the pipe receiver 32, the take-up pipe 16 and the stopper case 52 are moved by the elastic force of the take-up spring. Screen 18
It rotates integrally in the winding direction. As a result, the screen 18 is wound around the winding pipe 16 and rises.
When the screen 18 has risen to the position to be set, the operation dial 26 is rotated counterclockwise in FIG. 5 to engage the respective control pawls 30 and the pipe receivers 32 in the same manner as described above, and guide the pipe receivers 32 and the guides. The member 34 is made to be able to rotate integrally. At this time, the nut member 40
Since it is in contact with the regulating device 42 and further movement to the right in FIG. 1 is regulated, the rotation of the nut member 40 and the guide member 34 in the winding direction of the screen 18 is restricted. Therefore, the rotation of the pipe receiver 32 and the winding pipe 16 is also restricted. Thereby, the screen 18
Is set again.

When the screen 18 is to be lowered after the winding upper limit position of the screen 18 has been set, the knob 82 is pulled down with the knob 82. As a result, a rotational force is applied to the winding pipe 16 in the direction in which the screen 18 is unwound. Therefore, the stopper device 48 applies a rotational force in the unwinding direction of the screen 18 to the grooved drum 50 via the stopper case 52, so that the clutch spring 56 expands in diameter and the grooved drum 50 and the stopper main shaft 49 Is released, and the grooved drum 50 and the stopper case 52 are rotatable. Thereby, the winding pipe 16 becomes rotatable, and the winding pipe 16 rotates counterclockwise in FIG. Since the pipe receiver 32 rotates integrally with the winding pipe 16, the guide member receiver 28, the operation dial 26, the guide member 34, and the nut member 40, which are engaged with the pipe receiver 32 by the control pawl 30, are connected to the pipe receiver 32. Rotate together. Therefore, the screen 18 is unwound from the winding pipe 16 while the nut member 40 is guided by the guide member 34 and moves on the bolt shaft 36 to the left in FIG. After the screen 18 is lowered to the position shown in FIG. 9, when the weight bar 20 is stopped from being lowered, a rotating force in the winding direction of the screen 18 is applied to the winding pipe 16 by the elastic force of the winding spring. For this reason, the stopper device 48 is
2, a rotational force in the winding direction of the screen 18 is applied to the grooved drum 50, so that the clutch spring 5
6, the grooved drum 50 and the stopper main shaft 49 are fastened. Thus, the rotation of the winding pipe 16 is restricted via the grooved drum 50 and the stopper case 52. Therefore, the screen 18 stops at a desired position.

Next, when raising the screen 18, the knob 18 is slightly lowered with the knob 82, and the winding pipe 16 is lifted.
Is slightly rotated in the unwinding direction of the screen 18. Accordingly, in the stopper device 48, since the stopper case 52 slightly rotates in the screen unwinding direction, the ball 58 is guided by the groove 50 and the ball 58 moves, and the fastening between the stopper case 52 and the grooved drum 50 is released. . Therefore, the winding pipe 16, the stopper case 52, and the pipe receiver 32 rotate in the winding direction of the screen 18 by the elastic force of the winding spring. Since the operation dial 26 is engaged with the pipe receiver 32, the operation dial 26, the guide member receiver 28,
The guide member 34 and the nut member 40 also rotate together with the winding pipe 16. Therefore, the winding pipe 16 winds the screen 18 while the nut member 40 moves on the bolt shaft 36 rightward in FIG. When the nut member 40 moves to the position of the regulating device 42, the nut member 40 comes into contact with the regulating device 42 and cannot be further rotated, so that the rotation of the winding pipe 16 is restricted. Thus, the lifting of the screen 18 stops. The position where the screen 18 stops is the winding upper limit position of the screen 18 set previously. The bearing 22 can be used also as a bearing of a normal roll screen. Thereby, by replacing the winding pipe of the existing normal roll screen with the winding pipe having the winding upper limit position setting device 70, the normal roll screen is changed to the roll screen having the winding upper limit position setting device 70, Can be easily changed. Also,
Most parts can be shared between the normal roll screen and the roll screen of the present invention, so that the price can be reduced.

[0011]

According to the present invention, the operation dial is operated to make the pipe receiver and the guide member relatively rotatable, and the operation dial is further operated to bring the nut member into contact with the regulating device. Move it, lower the screen to the desired position, then release it,
By stopping the rotation of the winding pipe by the stopper device, stopping the screen, operating the operation dial, and making the pipe receiver and the guide member integrally rotatable,
The upper limit position of the screen winding can be set.
Therefore, a series of operations for setting the winding upper limit position can be easily performed with one hand.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a roll screen embodying the present invention.

FIG. 2 is an exploded perspective view of a winding upper limit position setting device.

FIG. 3 is a sectional view taken along line 3-3 in FIG.

FIG. 4 is a sectional view taken along line 4-4 in FIG. 1;

FIG. 5 is a diagram in which the operation dial is rotated in a direction for releasing the engagement between the control pawl and the pipe receiver.

FIG. 6 is a sectional view taken along the line 6-6 in FIG. 1;

FIG. 7 is a view showing a state in which the engagement between the control pawl and the pipe receiver is released.

FIG. 8 is a diagram showing a state of the roll screen when the screen stops at the winding upper limit position.

FIG. 9 is a diagram illustrating a state of the roll screen when the screen is lowered to a lowermost position.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Roll screen 12 Set frame 14 Side plate 16 Winding pipe 18 Screen 26 Operation dial 28 Guide member receiving 30 Control pawl 32 Pipe receiving 34 Guide member 36 Bolt shaft 40 Nut member 42 Restriction device 48 Stopper device 49 Stopper spindle 70 Rolling upper limit Position setting device

Claims (1)

(57) [Claims] 1. A side plate (14) provided at both ends of a set frame (12), a winding pipe (16) rotatably supported at both ends by the side plate (14), and a winding pipe (16). A screen (18), one end of which is connected to the winding pipe (16) so that the screen (18) can be constantly rotated in the winding direction; It has a main shaft (49) and has a winding pipe (1).
6) a state in which the stopper main shaft (49) is fastened;
A stopper device (48) having a clutch mechanism capable of switching between a state in which the engagement is released and a winding upper limit position setting device capable of setting an upper winding position of the screen (18) on the winding pipe (16). (70)
The roll upper limit position setting device (70) is fixed to the side plate (14), and the stopper main shaft (49) of the stopper device (48) is integrally connected. A bolt shaft (36), a nut member (40) screwed into the bolt shaft (36) so as to be movable in the axial direction, and a nut member (40) rotatable together with the nut member (40). ), A guide member (34) capable of guiding the axial movement of the nut member (40), a restricting device (42) capable of restricting the axial movement of the nut member (40) by a predetermined amount or more; ) Pipe holder (3)
2), a control pawl (30) for switching the pipe receiver (32) and the guide member (34) between a state in which they can be integrally rotated and a state in which they can be rotated relative to each other; An operation dial (26) that can be switched to one of two positions; and an operation dial (26) that is connected to rotate relative to a predetermined angle but to rotate integrally therewith. Guide and guide member (3
4) a guide member receiver (28) to which is fixed, and a roll screen.