CN103402402B - Sun screening device - Google Patents

Abstract

The present invention provides a solar shading device capable of stably fixing a fixed component in a frame, which includes: a frame (1) formed of a section bar having an opening, within the frame, the fixed part can only be moved along the longitudinal direction of the frame; A supported fixed part, and a fixing unit; the fixing unit is installed on the fixed part, and the fixed part is fixed on the frame; in the sunlight shading device, the fixing unit includes: an elastic crimping part (24), forming A support portion which is formed on the fixed member and rotatably supports the crimping member between a fixed position and a fixing release position of the fixed member, and which is formed on the fixed member and crimps the crimping member (24) at the fixed position A crimping force generating unit (31) at the upper part of the inside surface of the frame (1).

Description

Sunshade

technical field

The present invention relates to a sun protection device including a fixing unit for fixing the fixed member to a frame, among fixed members such as an elevating cord winding device of a pull-up curtain.

Background technique

(About Sunshine Shading Device)

The curtain blank of the pull-up curtain is suspended from the frame and is supported, and the lower end portion of the curtain blank is lifted by a lift cord to roll up or down the shade blank so that the amount of daylight can be adjusted.

The frame is equipped with a lifting pull rope winding device, and an operating device with an operating chain hanging down is installed at one end of the frame. And, by operating the operation chain, the drive shaft is rotated via the operation device, and the curtain material can be raised and lowered by the rotation of the drive shaft.

As in the above-mentioned pull-up curtain, the lifting cord winding device is fixed on the frame with set screws, or as disclosed in Patent Document 1, by making the fixing member of the bearing part of the lifting cord winding device Swivel to secure to frame.

In addition, it also discloses a fixing device that utilizes the elasticity of synthetic resin to fix the winding device for lifting and lowering pull cords to the frame. In particular, for the pull-up curtains where the curtain blanks are installed on the frame at the installation site, in order to pass the lifting cords through the guide rings installed on the back of the curtain blanks, it is necessary to adjust the fixing of the lifting cord winding device along the long side of the frame. Location. Therefore, in order to fix the lifting cord winding device to a desired position of the frame, the above-mentioned fixing screws and fixing members are used.

(Regarding the operating device of the sunshade device)

The curtain blank of the pull-up curtain is suspended from the frame and is supported, while the lower ends of a plurality of lifting cords hanging from the lifting cord winding device in the frame are installed on the lower end of the curtain blank. Then, by operating the lifting cord winding device to raise and lower the lifting cord, the curtain material can be raised and lowered.

As one of the operating devices for such a pull-up curtain, there is such a device: an operating device is installed at one end of the frame, and an operating chain hanging from the operating device is operated to rotate the drive shaft that drives the lifting cord winding device. .

In the pull-up curtain provided with such an operating device, when the operating chain is operated to rotate the drive shaft in the winding direction of the lifting cord, the curtain material can be lifted. In addition, after the operation chain is slightly rotated in the winding direction of the lifting pull cord, if the operation chain is released, the work of the stopper in the frame can be released, and the curtain blank will drop by its own weight.

In addition, the operating device can be installed on the right end of the frame or on the left end of the frame.

[Prior Art Literature]

【Patent Literature】

[Patent Document 1] Japanese Laid-Open Patent No. 2010-5314

[Patent Document 2] Japanese Laid-Open Patent No. 2010-255386

[Patent Document 3] Japanese Patent No. 2994552

[Patent Document 4] Japanese Patent No. 3273007

Contents of the invention

(problem to be solved by the invention)

(About Sunshine Shading Device)

The pull-up curtain that fixes the bearing part of the lifting cord take-up device with fixing screws requires tools such as a screwdriver, and it is troublesome to tighten the fixing screws from the bottom of the frame.

The fixing device generally uses the elasticity of synthetic resin to fix the lifting cord winding device to the frame, in which the holding force deteriorates over time due to the plastic deformation of the synthetic resin, so that the lifting cord winding device cannot be stably fixed .

In the fixing device disclosed in Patent Document 1, the fixing member is brought into contact with the vicinity of the opening of the frame, and the bearing member is pressed against the ceiling surface in the frame. Therefore, the dimensional accuracy of the opening of the frame formed by the profile is inherently unstable, and the opening is easily bent due to the pressing force of the fixing member, so the bearing member cannot be fixed to the frame reliably, or, The rotating operation of the fixed member requires a large operating force.

A first aspect of the present invention aims to provide a sun protection device capable of stably fixing a member to be fixed in a frame.

(Regarding the operating device of the sunshade device)

In the pull-up type curtain as described above, the pulley on which the operation chain is wound is directly connected to the drive shaft. Therefore, when the curtain material is lowered by its own weight, the operation chain rotates along with the rotation of the pulley.

Patent Document 2 discloses an operation device having a clutch function to prevent rotation of an operation chain during a self-weight lowering operation. However, since the operating device is asymmetrical in the front-rear direction, for example, the operating device for right operation cannot be used as the operation device for left operation.

Patent Document 3 discloses an operating device that is symmetrical in the front-rear direction. However, when the mounting position of the operating device is switched from the right end of the frame to the left end, for example, the pull-out direction of the operating cord is reversed in the front-rear direction. Therefore, when this operating device is used as an operating device for a pull-up curtain, its operation is inconvenient.

Patent Document 4 discloses an operating device that is symmetrical in the front-rear direction and can be attached to either of the left and right ends of the frame. However, the operation chain rotates during the self-weight lowering operation.

A second aspect of the present invention aims to provide an operating device for a sunshade device that does not operate an operating cord during a self-weight lowering operation and unifies right and left operations.

(technical means to solve the problem)

At least one of the first to second viewpoints of the present invention described below can solve the above-mentioned problems. The contents described in the following first to second viewpoints can be combined with each other, and further excellent effects can be obtained through the combination. The purpose and effect of the first viewpoint can be achieved by the content of the first viewpoint of the present invention, and the purpose and effect of the second viewpoint can be achieved by the content of the second viewpoint of the present invention.

According to a first aspect of the present invention, there is provided a solar shading device including: a frame formed of a profile having an opening, and a fixed member supported within the frame to move only along the longitudinal direction of the frame. , and a fixing unit mounted to the fixed member for fixing the fixed member to the frame. In the sunlight shading device, the fixing unit includes: an elastic crimping member formed on the fixed member to rotatably support the fixed member between a fixed position and a fixed release position; a support portion of the crimping member, and a crimping force generating unit formed on the fixed member and crimping the crimping member on an upper inner side surface of the frame at the fixing position.

Preferably, an operation piece for guiding the crimping member to the fixed position is provided on the fixed member, and the operation piece is exposed through an opening of the frame.

Preferably, a holding portion for holding the crimping member at the fixed position is provided on the fixed member.

Preferably, a release device for releasing the operation of the holding portion is provided on the fixed member, and the release device is exposed at the opening.

Preferably, the crimping member bends a metal wire to form a parallel portion extending in parallel, and bends the front end of the parallel portion toward the inner surface of the frame, The protrusion which expands the space of the parallel part and press-contacts the front-end|tip of this parallel part to the inner side surface of the said frame serves as the said pressure-contact force generation means.

Preferably, the crimping member is formed of an elastic metal wire.

According to a second aspect of the present invention, there is provided an operating device for a sunshade device, the operating device is provided with: one drive shaft in the frame is mounted on an end portion of the frame and is driven to rotate in accordance with the operation of the operating pull cord, so as to operate from the The lifting operation and self-weight lowering operation of the sunshade member suspended and supported by the frame, in the sunshade device, the operating device includes: a housing that can be installed at both ends of the frame; rotatably supported on the and a clutch device that transmits the rotation of the pulley to the drive shaft and does not transmit the rotation of the drive shaft when the self-weight is lowered to the pulley.

Preferably, a cylindrical portion is provided on the housing, and the cylindrical portion is fitted and inserted into the end portion of the frame, and a housing space capable of fitting and inserting the cylindrical portion is provided on the frame, and the drive shaft Both the cylindrical portion and the storage space are formed in line symmetry in the front-rear direction of the frame centered on the center.

Preferably, the housing is formed in a line-symmetrical shape with respect to the front-rear direction of the frame centered on the drive shaft.

Preferably, in the case, the pulley, and a gear that transmits the rotation of the pulley to the clutch device, and the clutch device are provided before and after the frame centered on the drive shaft Directionally, these components are arranged in a line-symmetrical shape.

(invention effect)

According to the first viewpoint of the present invention, it is possible to provide a solar shading device capable of stably fixing a member to be fixed in a frame.

According to the second aspect of the present invention, it is possible to provide an operating device for a sunshade device, so that the operating pull cord is not actuated during the self-weight lowering operation, and the operating device for right operation and the operation for left operation can be made Commonization of devices.

Description of drawings

Fig. 1 is a front view showing a pull-up curtain according to one embodiment of the first viewpoint of the present invention.

Fig. 2 is a side view showing a pull-up curtain according to one embodiment of the first viewpoint of the present invention.

Fig. 3 is a front view showing an elevating cord winding device according to one embodiment of the first viewpoint of the present invention.

Fig. 4 is a side view showing an elevating cord winding device according to one embodiment of the first viewpoint of the present invention.

Fig. 5 is an exploded perspective view showing an elevating cord winding device according to one embodiment of the first viewpoint of the present invention.

Fig. 6 is a front view showing the operation of the crimping member according to the embodiment of the first viewpoint of the present invention.

Fig. 7 is a side view showing the movement of the crimping member according to the embodiment of the first viewpoint of the present invention.

Fig. 8 is a front view showing a pull-up curtain for right operation according to an embodiment of a second viewpoint of the present invention.

9 is a cross-sectional view showing an operation device for right operation according to an embodiment of a second viewpoint of the present invention.

10 is a cross-sectional view showing an operation device for left operation according to an embodiment of a second aspect of the present invention.

Fig. 11 is an exploded perspective view showing an operation device for right operation according to an embodiment of a second viewpoint of the present invention.

Fig. 12 is a side view showing an operating device attached to a frame according to an embodiment of a second aspect of the present invention.

Fig. 13 is a front view showing a pull-up curtain for left operation according to an embodiment of a second viewpoint of the present invention.

(Symbol Description)

(symbols in the embodiment of the first aspect of the present invention)

1...frame 5...fixed parts (lifting rope winding device)

8...fixed part (supporting part) 24...fixing unit (crimping part)

26a, 26b...parallel part 28a, 28b...fixing unit (support part, support groove)

31...fixing unit (crimping force generating unit, protrusion) 32...operating piece

34...Release device (elastic piece) 35...Holding part

(symbols in the embodiment of the second aspect of the present invention)

1...frame 2...solar shade (curtain blank)

10... drive shaft 11a, 11b... operating device

12...Pulley 13...Operating pull cord (ball chain)

15a, 15b...clutch device 18, 20...housing

22, 23...Gear (output gear, transmission gear) 24...Cylinder

detailed description

Next, various embodiments of the present invention will be described. For convenience of description, the embodiment based on the first to second viewpoints of the present invention will be described, but an embodiment including two or more features of the first to second viewpoints is also possible. Therefore, the embodiments based on the first to second viewpoints of the present invention shown below can be combined with each other. In addition, regarding the code|symbol attached to each element, the code|symbol of the same number may be attached|subjected to a different element in a different embodiment.

(An embodiment of the first aspect of the present invention)

Hereinafter, an embodiment embodying the first aspect of the present invention will be described with reference to the drawings. In the pull-up curtain shown in FIGS. 1 and 2 , a curtain blank 2 is suspended from a frame 1 and supported, and a bottom rail (bottom rail) is inserted and supported in a pocket 3 formed at the lower end of the curtain blank 2 . )4.

At least two elevating cord winding devices 5 are arranged in the frame 1 , and the elevating cord 6 is suspended and supported from the elevating cord winding devices 5 . A hook 7 is installed at the lower end of the lift rope 6 , and the hook 7 is installed at the lower end of the curtain blank 2 .

In the lifting cord winding device 5 , a winding shaft 9 is rotatably supported by the supporting member 8 , and the upper end of the lifting cord 6 is attached to the winding shaft 9 . Then, by the rotation of the winding shaft 9, the elevating cord 6 is wound to the winding shaft 9, or rewound.

A hexagonal rod-shaped driving shaft 10 passes through the central portion of the winding shaft 9 in a non-rotatable manner, and one end of the driving shaft 10 is fitted to an output shaft of an operating device 11 installed at one end of the frame 1 .

Next, the specific structure of the lift cord winding device 5 will be described with reference to FIGS. 3 to 5 . As shown in FIG. 4 , the frame 1 has an opening that opens downward, and is formed of a substantially rectangular cylindrical shape. The support member 8 is made of elastic synthetic resin, and is formed in a shape that can be inserted into the frame 1 from the side of the frame 1, and its longitudinal ends are held so that they can only be moved along the frame 1 relative to the frame 1. The frame 1 moves in the longitudinal direction. In addition, bearing portions 20 a and 20 b are formed at both ends in the longitudinal direction of the support member 8 .

The winding shaft 9 is formed such that its diameter gradually decreases from one end to the other end, and shaft portions 21 are formed at both ends thereof. Further, the shaft portion 21 is rotatably supported in the bearing hole 18 formed in the bearing portion 20 a and the bearing groove 19 formed in the bearing portion 20 b.

In addition, a pair of protrusions 19 a for holding the shaft portion 21 in the bearing groove 19 are provided facing each other on the inner surface of the bearing groove 19 . On the other end side of the winding shaft 9 is formed a buckling portion 22 for buckling the upper end of the lift cord 6 . The upper end of the lift cord 6 is attached to the buckle portion 22 , passes through the outer peripheral surface of the winding shaft 9 , and hangs downward from a guide portion 23 provided at one end of the support member 8 .

Then, when the winding shaft 9 rotates in the lifting cord winding direction, the lifting cord 6 is wound up to the large-diameter side of the winding shaft 9 and spirally wound so as to be sequentially sent to the small-diameter side. At the other end of the support member 8, a crimping member 24 for immovably fixing the support member 8 within the frame 1 is mounted. The crimping member 24 is formed by bending a metal wire elastically deformed in a deformable region.

That is, the middle portion of one wire is bent to form a rectangular engaging portion 25, and the wires extending along both sides of the engaging portion 25 are bent at right angles in the same direction near the engaging portion 25 to form parallel portions 26a, 26b. .

The distance between the parallel parts 26a, 26b gradually expands from the bent position to the middle position of the parallel parts 26a, 26b, and the front ends of the parallel parts 26a, 26b are bent at right angles in the direction away from each other, thereby forming the rotation fulcrum parts 27a, 27b.

Support grooves 28 a , 28 b capable of elastically fitting the rotation fulcrum portions 27 a , 27 b are formed at the upper end portion of the bearing portion 20 b on the other end side of the support member 8 . In addition, a reinforcing rib 30 is formed on the outer surface of the bearing portion 20b along the opening edge of the bearing groove 19, and a pair of protrusions 31 protruding along the front and rear width direction of the frame 1 are formed on the front and rear sides of the reinforcing rib 30. .

As shown in FIGS. 4 and 5 , a slope 29 facing the outside of the support member 8 is formed at the front end of the protrusion 31 . An operating piece 32 protruding downward is formed on the bearing portion 20b. If the concave-convex portion 33 provided at the lower end of the operating piece 32 is pressed in the direction of arrow A shown in FIG. direction deflection. In addition, the operating piece 32 is located between the parallel portions 26a, 26b in a state where the crimping member 24 is mounted to the support grooves 28a, 28b.

An elastic piece 34 extending from the longitudinal center of the bottom surface of the support member 8 toward the operation piece 32 is formed, and a holding portion 35 capable of holding the engaging portion 25 is formed at a front end of the elastic piece 34 . .

And, if the operating piece 32 is bent along the arrow A direction from the state shown in FIG. As shown, the engaging portion 25 is held by the holding portion 35 .

When pressed upward (ie, in the direction of arrow B shown in FIG. 3 ), the tip of the elastic piece 34 is bent upward due to the elasticity of the synthetic resin, and the engaging portion 25 is detached from the holding portion 35 .

According to the operation of the operation piece 32, if the crimping member 24 is rotated in the direction of arrow A from the state shown in FIGS. 6 and 7 and becomes the state shown in FIG. The ramps 29 ride over the projections 31, the spacing of which increases.

Thus, as shown in FIG. 4 , the pivot points 27a, 27b move away from each other, that is, in the direction of the arrows C1, C2, and the front ends of the pivot points 27a, 27b are pressed against the inner surface of the frame 1. As a result, the supporting member 8 is fixed so that it cannot move relative to the frame 1 .

Next, the action of the lifting cord winding device 5 having the above-mentioned configuration will be described. In order to be accommodated in the frame 1 and the lifting and pulling cord winding device 5 with the drive shaft 10 passing through the winding shaft 9 is fixed at a desired position in the frame 1, as shown in FIG. The state of the holding part 35 is maintained.

In this state, as shown in FIG. 7, the front ends of the rotation fulcrum portions 27a, 27b of the crimping member 24 are not crimped to the inner surface of the frame 1, so the supporting member 8 can be moved along the frame 1 inside the frame 1. Move in the long direction.

After moving the supporting member 8 to a desired position, press the operation piece 32 in the direction of arrow A, and as shown in FIG. In this way, as shown in FIG. 4, the parallel portions 26a, 26b of the crimping member 24 ride on the projection 31 from the slope 29, the pivot points 27a, 27b move in the directions of arrows C1, C2, and the front ends of the pivot points 27a, 27b are moved. It is crimped to the upper part of the inner surface of the frame 1, and the lifting and pulling rope winding device 5 is fixed on the frame 1 in an immovable manner.

In addition, when the elastic piece 34 is pressed upward (ie, in the direction of arrow B) while the lifting cord winding device 5 is fixed to the frame 1 , the engaging portion 25 is detached from the holding portion 35 . The crimping member 24 rotates to the state shown in FIG. 6 , and the crimping of the pivot points 27 a and 27 b to the inner surface of the frame 1 is released, so that the lifting cord winding device 5 can move relative to the frame 1 .

The elevating cord winding device 5 having the above configuration can obtain the following effects.

(1) In the state where the engaging portion 25 of the crimping member 24 is not engaged with the holding portion 35 of the elastic sheet 34, the lifting cord winding device 5 can be moved along the longitudinal direction of the frame 1 in the frame 1. Make position adjustments.

(2) If the engaging portion 25 of the crimping member 24 is engaged with the retaining portion 35 of the elastic piece 34, the front ends of the pivot points 27a, 27b are crimped to the inner surface of the frame 1, so that the lifting cord can be wound. The device 5 is fixed into the frame 1 .

(3) The front ends of the rotation fulcrum portions 27a, 27b can be press-contacted to the upper end portion of the inner surface of the frame 1 . Since the frame 1 is opened downward, it is easy to ensure the dimensional accuracy of the space in the upper part of the inner surface, and it is difficult to generate plastic deformation due to the crimping force. Therefore, it is possible to stably fix the lifting cord winding device 5 to the frame 1 .

(4) Utilize the elastic action of crimping member 24 to crimp the front end of rotation fulcrum portion 27a, 27b on the upper end portion of frame 1 inner surface, therefore, as long as fully ensure the height of protrusion 31, the dimension between frame 1 inner surface Even a slight deviation can stably fix the lifting stay cord winding device 5 .

(5) Since the crimping member 24 is made of elastic metal, it is less likely to deteriorate the crimping force over time.

(6) By pressing and operating the operation piece 32 exposed from the opening of the frame 1 , the engaging portion 25 of the pressing member 24 can be hooked to the holding portion 35 of the elastic piece 34 . Therefore, the fixing operation of the lifting cord winding device 5 accommodated in the frame 1 can be easily performed without using tools.

(7) By pressing upward the elastic piece 34 exposed from the opening of the frame 1 , the engaging portion 25 can be detached from the holding portion 35 . Therefore, the unfixing operation of the elevating cord winding device 5 housed in the frame 1 can be easily performed without using a tool.

The above-described embodiment may also adopt the following embodiments.

*It is not limited to the lifting cord winding device of the pull-up curtain, and it can be implemented when the lifting cord winding device of the pleated curtain is fixed to the frame, and an arbitrary part is fixed to the curtain rail.

*In the above embodiment, no guide roller is provided between the guide part 23 and the winding shaft 9, however, in order to make the lift cord 6 move smoothly from the guide part 23 to the winding shaft 9, a guide roller may also be provided. In addition, in the type of sunlight shielding device that does not have a winding shaft, the guide roller can be fixed at an arbitrary position in the longitudinal direction of the frame 1 by employing the supporting member and the fixing unit having structures similar to those of the above-mentioned embodiment. In such a case, the support member 8 has a structure capable of supporting the guide roller.

(embodiment of the second viewpoint of the present invention)

Hereinafter, the embodiment which actualized the 2nd viewpoint of this invention is demonstrated based on drawing. Regarding the pull-up curtain shown in FIG. 8 , a curtain blank 2 is suspended from a frame 1 and supported, and a bottom rail 4 is passed through and supported in a pocket 3 formed at the lower end of the curtain blank 2 .

At least two elevating cord winding devices 5 are arranged in the frame 1 , and the elevating cord 6 is suspended and supported from the elevating cord winding devices 5 . A hook 7 is installed at the lower end of the lift cord 6 , and the hook 7 is installed at the lower end of the curtain blank 2 .

In the lift cord winding device 5 , the winding shaft 9 is rotatably supported by the support member 8 , and the upper end of the lift cord 6 is mounted on the winding shaft 9 . And, by the rotation of the winding shaft 9, the lifting cord 6 is wound up on the winding shaft 9, or rewound.

In the central portion of the winding shaft 9, a hexagonal rod-shaped drive shaft 10 passes through in a non-rotatable manner, and one end of the drive shaft 10 is inserted into the output shaft installed on the operating device 11a, and the output shaft of the operating device 11a is installed on one end of the frame 1 .

A pulley 12 is rotatably supported inside the operating device 11a, and an endless ball chain 13 is suspended from the pulley 12. As shown in FIG. Also, the pulley 12 is rotated by operating the ball chain 13 .

A torque limiter 14 and a clutch device 15 a are arranged in the actuating device 11 a. And the rotation of the pulley 12 is transmitted to the said drive shaft 10 via the torque limiter 14 and the clutch device 15a.

The torque limiter 14 limits the rotational torque transmitted from the pulley 12 to the clutch device 15a below a specified value, so as to prevent damage to the ball chain 13, the pulley 12, and the clutch device 15a caused by excessive rotational torque in advance. Or the damage of the lift cord winding device 5 .

The clutch device 15a operates in such a manner that the rotation of the pulley 12 caused by the operation of the ball chain 13 is transmitted to the drive shaft 10, and the rotation of the drive shaft 10 when the curtain material 2 is lowered by its own weight is not communicated to the pulley 12.

A stopper 16 is disposed inside the frame 1 , and the drive shaft 10 is inserted through the stopper 16 . And, when the ball chain 13 is lowered after the drive shaft 10 rotates to pull the curtain material 2, the drive shaft 10 is prevented from rotating in the curtain material descending direction, thereby preventing the curtain material 2 from falling due to its own weight.

In addition, when the curtain material 2 is prevented from falling under its own weight, if the drive shaft 10 is slightly rotated in the direction of pulling the curtain material 2 and then the ball chain 13 is lowered, the action of the stopper 16 is released, and the curtain material 2 falls due to its own weight.

Next, a specific structure of the operation device 11a will be described with reference to FIGS. 9 , 11 and 12 . As shown in FIGS. 9 and 11 , an intermediate plate 19 and a case cover 20 are attached to the front end side of a case 18 in the operation device 11 a. In addition, the housing 18, the intermediate plate 19, and the housing cover 20 are formed in a line-symmetrical shape in the front-rear direction of the pull-up curtain.

The pulley 12 is rotatably supported on a spindle 21 formed on the inner surface of the case cover 20 , and the torque limiter 14 is disposed inside the pulley 12 . Also, when the pulley 12 is rotated by operating the ball chain 13, the output gear 22 of the torque limiter 14 is normally rotated.

In addition, the torque limiter 14 is set so as not to transmit a rotational torque exceeding a predetermined value to the output gear 22 , and when this torque acts on the pulley 12 , the pulley 12 idles relative to the output gear 22 .

The output gear 22 meshes with the transmission gear 23 , and the transmission gear 23 is rotatably supported on the intermediate plate 19 . Accordingly, the transmission gear 23 rotates with the rotation of the output gear 22 . In the housing 18, a cylindrical portion 24 protruding toward the frame 1 side is formed on a base end surface, and the clutch device 15a is accommodated in the cylindrical portion 24. As shown in FIG. The input shaft 25 of the clutch device 15a is non-rotatably fitted to the center of the transmission gear 23, and the end of the drive shaft 10 is non-rotatably fitted to the output shaft 26 of the clutch device 15a.

Furthermore, the clutch device 15 a operates as follows: while transmitting the rotation of the transmission gear 23 to the drive shaft 10 , the rotational torque applied to the drive shaft 10 by the lifting cord winding device 5 is not transmitted to the transmission gear 23 .

As shown in FIGS. 11 and 12 , the cylindrical portion 24 of the housing 18 can be inserted into the frame 1 , and when the cylindrical portion 24 is inserted into the frame 1 , a The casing 18 is fixed to the frame 1 by screwing a tapping screw 30 into the rib 29 on the top of the frame 1 through the insertion holes 27 and 28 at the top.

In addition, when assembling the operation device 11 a , the clutch device 15 a , the intermediate plate 19 , and the transmission gear 23 are housed in the case 18 , and the case 18 is fixed to the frame 1 . Then, the pulley 12 on which the ball chain 13 is hung and the torque limiter 14 are attached to the case cover 20 , and the case cover 20 is fixed to the case 18 with screws 35 .

Flat surfaces 31 are formed on both sides of the outer peripheral surface of the cylindrical portion 24 , and reinforcing ribs 32 and 33 extending downward are respectively formed on both sides of the lower portion. Furthermore, when the cylindrical portion 24 is inserted into the frame 1 , one of the flat surfaces 31 abuts against the rear inner surface of the frame 1 , and the other abuts against a rib 34 protruding horizontally from the front inner surface of the frame 1 .

Furthermore, the ribs 32 and 33 sandwich a rib 35 protruding upward on both sides of the opening of the frame 1 . According to such a configuration, the cylindrical portion 24 is inserted into the frame 1 while being positioned in the circumferential direction.

Although the operation device 11a constituted as above is an operation device for right operation mounted on the right end of the frame 1, if the clutch device 15a of the operation device 11a is replaced with a clutch device for left operation, it can also be used for left operation. operating device used.

Fig. 10 shows the operating device 11b for left operation. Except for the clutch device 15b, this operation device 11b has a common structure with the above-mentioned operation device 11a for right operation. The direction of the rotational torque which the clutch device 15b transmits to the drive shaft 10 is opposite to the direction of the said clutch device 15a.

In addition, the cylindrical portion 24 of the housing 18 is formed in a line-symmetrical shape, so it can also be inserted into the left end of the frame 1, and the housing 18 and the housing cover 20 are also formed in a line-symmetrical shape, so the operating device 15b and the operating device 15a are identical in design.

Next, the action of the pull-up curtain having the above-mentioned structure will be described. In the pull-up curtain for right operation shown in FIG. 8 , for example, when the ball chain 13 hanging down from the pulley 12 to the indoor side is pulled downward, the rotation of the pulley is transmitted to the drive shaft 10 via the clutch device 15a, and the up and down pull is performed. The rope 6 is wound on the lifting stay cord winding device 5, and the curtain blank 2 is put on.

After the curtain blank 2 is lifted to the desired height, when the ball chain 13 is released, the work of the stopper 16 prevents the curtain blank 2 from falling due to its own weight, and the curtain blank 2 remains at the desired height.

From this state, if the ball chain 13 is slightly pulled in the lifting direction of the curtain blank 2 and then released, the operation of the stopper 16 is released, and the curtain blank 2 falls due to its own weight. At this time, the drive shaft 10 rotates in the lifting cord rewinding direction, but the rotation of the drive shaft 10 is not transmitted to the transmission gear 23 due to the action of the clutch device 15a. Thus, the ball chain 13 does not rotate.

If the clutch device 15a of the said operation device 11a is replaced with the clutch device 15b, the operation device 11b for left operation is comprised. If this operating device 11b is attached to the left end of the frame 1 as shown in FIG. The lifting cord 6 is wound on the lifting cord winding device 5, and the curtain blank 2 is lifted.

After the curtain blank 2 is lifted to the desired height, the ball chain 13 is released, and the curtain blank 2 is prevented from falling due to its own weight due to the work of the stopper 16, and the curtain blank 2 remains at the desired height.

From this state, if the ball chain 13 is slightly pulled in the pulling direction of the curtain material 2 and released, the operation of the stopper 16 will be released, and the curtain material 2 will drop due to its own weight. At this time, the drive shaft 10 rotates in the lifting and lowering cord rewinding direction, but the rotation of the drive shaft 10 is not transmitted to the transmission gear 23 due to the action of the clutch device 15b. Thus, the ball chain 13 does not rotate.

The operating devices 11a and 11b for the pull-up curtains configured as described above can obtain the following effects.

(1) When the curtain material 2 is lowered by its own weight, the ball chain 13 can be prevented from rotating.

(2) The clutch device 15a may be used to configure the operating device 11a for right operation, and the clutch device 15b may be used to configure the operation device 11b for left operation.

(3) Among the operating devices 11a, 11b, other components may be used in common except for the clutch devices 15a, 15b.

(4) The operating direction of the ball chain 13 when the operating devices 11a, 11b are used for the lifting operation can be made in the same direction.

(5) Since the cylindrical portion 24 of the housing 18 is line-symmetrical in the front-rear direction, and the housing space of the cylindrical portion 24 of the frame 1 is line-symmetrical in the front-rear direction, the housings of the operating devices 11a and 11b can be shared. parts.

(6) The casing 18 and the casing cover 20 of the operating devices 11a, 11b are formed in a line-symmetrical shape in the front-rear direction of the pull-up curtain, so the operating devices 11a, 11b mounted on the frame 1 can be designed to be the same. shape.

The above-described embodiments can also be implemented in the following forms.

*In addition to the pull-up type curtain, the operating device of the above embodiment can also be applied to a pleated type curtain, a horizontal blind, and the like.

Claims (6)

1. a sun screening device, it comprises:

One framework, it is formed by the section bar possessing opening portion;

One fixed part, it is being supported in this framework along the mode of the long side direction movement of framework; And

One fixed cell, it is installed on described fixed part, and this fixed part is fixed on described framework,

Described fixed cell comprises:

One welded part, it has elasticity;

One support portion, it is formed at described fixed part, and so that described welded part can be supported rotationally in the fixed position of described fixed part and fixing releasing between position; And

One crimp force generation unit, it is formed at described fixed part, and described welded part is crimped on the inner surface top of described framework in described fixed position.

2. sun screening device according to claim 1, wherein,

Described fixed part is provided with the operating sheet described welded part being directed to described fixed position, and described operating sheet is exposed to the opening portion of described framework.

3. sun screening device according to claim 1 and 2, wherein,

Described fixed part is provided with the maintaining part described welded part being remained on described fixed position.

4. sun screening device according to claim 3, wherein,

Described fixed part is provided with the decontrol of the work removing described maintaining part, and described decontrol is exposed to described opening portion.

5. sun screening device according to claim 1, wherein,

Described welded part is formed, bending metals wire rod and form the parallel parallel portion that extends and the inner surface of the front end in this parallel portion towards described framework is bent, described fixed part is provided with the projection as described crimp force generation unit, and this projection expands the interval in described parallel portion and the front end in described parallel portion is crimped on the inner surface of described framework on described fixed position.

6. sun screening device according to claim 1, wherein, described welded part formed by having flexible metal wire rod.