JP2006188867A - Roll blind - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roll blind equipped with a rotation regulating device capable of pulling out a screen and fixing the screen in an optional position and pulling out the pulled-out screen a little more to release fixation and to roll the screen into a winding roller. <P>SOLUTION: The roll blind 1 is equipped with the rotation regulating device for locking the screen P pulled out of the winding roller 2, in the optional position and pulling out the pulled-out screen P a little more from the winding roller 2 to release the lock and to wind the screen P onto the winding roller 2. The rotation regulating device is disposed on the lower end side, put in a free state, of the screen P with the upper end side suspended and fixed, and an abutting member abutting on the back face of a hanging tension face of the screen P wound by the rotation regulating device, with predetermined return torque of the rotation regulating device is provided near the rotation regulating device. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention includes a rotation restricting device that can pull out the screen and fix the screen at an arbitrary position, and can further pull out the screen that has been pulled out to release the fixing and wind the screen around the take-up roller. It relates to roll blinds.

  2. Description of the Related Art Conventionally, various types of roll blind rotation restricting devices have been proposed.

  For example, as disclosed in Patent Document 1, while the braked body and the winding shaft that are rotatably supported by the fixed shaft are rotated on the fixed shaft side while rotating the braked body based on the rotation of the winding shaft. A cam mechanism that reciprocates between a position that engages with the brake body and a position that does not engage with the brake body enables the take-up shaft to rotate at a position where the brake body and the braked body do not engage with each other, and the take-up shaft rotates at the position where the brake body engages In addition, the brake member can be rotated together with the take-up shaft within the range of the rotation angle of the take-up shaft required to move from the position engaged with the braked object to the position not engaged by the cam mechanism. There is a clutch device that is provided with a rotation permissible means, and such a rotation restricting device is provided on the upper end side of the screen so that the lower end side of the screen is in a free state.

  In addition, in the past, a screen with a coarse mesh and a plurality of independent screens with a screen with a dense mesh are provided side by side, and these screens are used properly according to the intensity of external light. .

Further, in the prior art, as shown in Patent Documents 2 and 3, along with the operation of drawing out and winding up the screen based on the rotation restricting device, the left and right edges of the screen are shifted and the entire surface is loosened or wrinkled. For example, a pair of left and right longitudinal guide rails are provided so as not to occur.
JP-A-9-119278 JP 2004-2111298 A JP 2004-211199 A

  However, in the conventional mechanism described above, since most of the rotation regulating devices are arranged only on the upper end side of the screen, the screen cannot be wound from the lower end side. For this reason, for example, in a single screen having a screen portion with a coarse mesh and a screen portion with a dense mesh, only winding from above is possible, and the screen can be wound from below. could not. That is, in the conventional mechanism, it has been impossible to selectively wind up or down the screen.

  In addition, when the rotation restricting device is arranged on the lower end side in a free state of the screen, the parallelism between the screen surface and the take-up roller hanging down with respect to the screen wound by the rotation restricting device is maintained. If there is no action, smooth winding of the screen is impossible.

  In addition, in the case where a plurality of independent screens of coarse mesh screens and dense mesh screens are provided as in the past, a plurality of rotation restricting devices corresponding to the number of screens are required. As a result, installation on the window frame becomes complicated and costly.

  Furthermore, even in the case of providing a pair of left and right vertically long guide rails as in the prior art, installation on the window frame becomes complicated and costly.

  Therefore, the present invention was created in view of the conventional circumstances as described above, and a plurality of different light shielding effects can be obtained with one screen, and a screen portion with a coarse mesh in one screen. And, even if it has a screen part with a dense mesh, either one of the screen parts can be selectively wound, and further, the tension of its own weight is applied to the screen wound by the rotation restricting device. In addition, by maintaining the parallelism between the take-up roller by the tension roller that contacts the back of the screen and the screen surface to be taken up, smooth take-up of the screen can be performed. Regardless of screen density, fix the top of the screen to the mounting frame and simply lift the screen from the bottom up Consists merchandise to wind, also easy to install relative to the window frame, and an object thereof is to provide a roller blind which can be produced at a low cost.

  In the present invention, the screen drawn out from the take-up roller is locked at an arbitrary position, and the screen being drawn out is slightly pulled out from the take-up roller so that the lock is released and the take-up roller takes up the screen. In the roll blind provided with the rotation restricting device, the rotation restricting device is arranged on the lower end side of the screen in a free state on the screen with the upper end side suspended and fixed, and in the vicinity of the rotation restricting device, the rotation restricting device By providing an abutting member that abuts with a predetermined return torque of the rotation restricting device from the back of the tension surface that hangs down the screen to be wound, the above-described problems have been solved.

  Further, since the contact member is a tension roller, the above-described problem has been solved.

  Furthermore, since the screen is formed of a first screen portion made of a coarse mesh and a second screen portion made of a fine mesh, the above-mentioned problem has been solved.

  There is also a rotation restricting device that locks the screen drawn out from the take-up roller at an arbitrary position, and releases the lock by slightly pulling the screen drawn out from the take-up roller and winds it up on the take-up roller. In the roll blind, the screen is formed of a first screen portion with a coarse mesh and a second screen portion with a dense mesh, and the rotation restricting device includes the first screen portion and the second screen. In order to wind up each part individually, the screen is placed on the upper end side of the screen and on the lower end side of the screen in a free state, and the lower end of the screen is wound by the rotation restricting device near the rotation restricting device on the lower end side. A contact member that contacts the back surface of the tension surface with a predetermined return torque of the rotation restricting device. By were example, it was to solve the problems which is also described above.

  In addition, since the contact member is a tension roller, the above-described problem has been solved.

  Further, the tension roller is provided with a handle for pulling the screen with fingers, thereby solving the same problem as described above.

  In addition, the rotation restricting device attaches a winding member capable of winding to a winding roller, rotatably supports the winding roller on a fixed shaft, and winds the winding roller by a biasing means. In the winding roller, a winding operation by a biasing force of the biasing means, a rewinding operation based on the rotation of the winding roller, and the biasing means after the rewinding operation The above-described problem has been solved by including a clutch device that can select a restricting operation that prevents rotation of the take-up roller.

  In addition, the fixed shaft of the rotation restricting device penetrates through the take-up roller in order to maintain the parallelism of the take-up roller and the tension roller, and the tension roller mounting part that contacts the back of the screen cannot rotate on the fixed shaft. The problem mentioned above was solved by being attached to.

  Furthermore, the rotation restricting device is disposed on both the left and right ends of the screen in order to maintain the parallelism of the winding roller and the tension roller of the screen, thereby solving the above-described problem.

  Further, the contact member is rotatable, thereby solving the above-described problem.

  In addition, the handle can be rotated to solve the above-described problem.

  According to the present invention, a plurality of different light-shielding effects can be obtained with a single screen, and a single screen includes a coarse mesh screen portion and a dense mesh screen portion. Also, either one of the screen portions can be selectively wound. In addition, regardless of the density of the screen, the upper part of the screen can be fixed and the screen can be simply rolled up from below.

  Furthermore, the screen can be smoothly wound up by bringing the tension roller into contact with the back surface of the tension surface that is suspended by the rotation restricting device with a predetermined return torque of the rotation restricting device. In particular, in the rotation restricting device arranged on the lower end side of the screen, the tension roller is brought into contact with the back side of the tension surface that hangs down on the screen. Therefore, when the screen is wound by the rotation restricting device on the lower end side, the tension roller itself Can be received at the back of the screen.

  Furthermore, in order to maintain the parallelism of the take-up roller and the tension roller, the fixed shaft penetrates through the take-up roller, and the attachment component of the tension roller is non-rotatably attached to the fixed shaft, or the rotation restricting device is attached to the screen. Since they are arranged on the left and right ends, it is not necessary to arrange a pair of vertically long guide rails on the left and right sides of the screen as in the prior art, and they can be easily fixed to the window frame and manufactured at low cost.

  According to the present invention, the tension roller as the contact member contacts the back surface of the screen with the predetermined return torque of the rotation restricting device disposed on the lower end side of the screen. The tension roller mounting part is non-rotatably mounted on the fixed shaft. Then, the return of the fixed shaft due to the urging force of the rotation restricting device is regulated by contacting the tension roller from the back surface of the tension surface of the drooping weight of the screen drawn out from the winding roller, and as a result, the urging force is taken up. It is opened to the roller side, and the screen can be taken up.

  The best mode for carrying out the present invention will be described below with reference to the drawings. The roll blind 1 according to the present invention includes a predetermined rotation restricting device. As shown in FIGS. 1 and 2, the rotation restricting device draws the screen P from the winding roller 2 always biased in the winding direction and rotates the winding roller 2 in the winding direction at an arbitrary position. Further, the screen P that has been drawn out can be further pulled out to release the rotation prevention in the winding direction, and the screen P can be wound around the winding roller 2.

  The roll blind 1 provided with this rotation restricting device can be directly attached to an attachment surface such as a wooden frame or a sash by an upper bracket Q that supports the upper end side of the screen P. Specifically, as shown in FIGS. 1A and 1B, as the upper bracket Q, a mounting frame portion Q1 having a substantially H-shaped rod frame shape in which both ends are curved in an arc shape, and the mounting frame portion. A long portion in which the upper end side of the screen P is fixed to the lower recess of the mounting frame portion Q1. The hook portion Q2 is fitted into the upper recess of Q1 and is slidable in accordance with the mounting width. The belt-like fixing piece Q3 is fitted so as to be detachable.

  The fixing piece Q3 itself is forcibly rotated to forcibly bend the lower recess of the mounting frame Q1 in the expanding direction so that it can be easily removed from the recess. It is.

  Further, the rotation restricting device is disposed on the lower end side of the screen P in a free state in the screen P in which the upper end side is suspended and fixed by the upper bracket Q. That is, the rotation restricting device attaches a winding member capable of winding to the winding roller 2, rotatably supports the winding roller 2 on a fixed shaft, and the winding roller 2 is urged by an urging means. The winding roller 2 is urged in the winding direction, and the winding roller 2 has a winding operation by the urging force of the urging means, a rewinding operation based on the rotation of the winding roller 2, and after the rewinding operation. A clutch device (not shown) that enables selection of a restricting operation that prevents the winding roller 2 from rotating by the biasing means is provided.

  The specific configuration of the rotation restricting device is such that a fixed shaft that is non-rotatably attached to a pair of brackets R1 and R2 formed in a substantially oval shape, one end side is rotatably supported by the fixed shaft, and the other end A winding roller 2 for winding the screen P, the side of which is rotatably supported by the other bracket R2, and one end side is locked to the fixed shaft, and the other end side is locked to the winding roller 2, and the screen P The coil spring is used as a winding power of the coil spring, and is configured to be selectable in a state in which the winding rotation of the winding roller 2 with respect to the fixed shaft by the winding biasing force of the coil spring is allowed or blocked. The fixed shaft itself is formed in a prismatic shape, and the fixed shaft penetrates through the take-up roller 2, so that the parallelism between the take-up roller 2 and the tension roller 3 as a contact member is maintained.

  Further, as shown in FIG. 3A, the one bracket R1 (or R2) has a square hole portion 2A for fitting one end of a fixed shaft formed in a prism shape, and this square hole portion 2A. The winding strength of the coil spring is adjusted by rotating the direction. For example, one bracket R1 (or R2) formed in a bifurcated lever shape is pivotally attached to the bracket base, and a single locking protrusion provided on the bracket R1 (or R2), or The winding strength of the coil spring is obtained by locking any one of the plurality of locking projections to a corner portion of the bracket base or an engagement hole formed in the inner surface of the bracket base via a friction spring. Is adjusted.

  In addition, said structure demonstrated about the rotation control apparatus does not limit this invention at all, You may employ | adopt another structure. In addition, in order to maintain the parallelism between the winding roller 2 and the tension roller 3, instead of forming the fixed shaft itself in the shape of a prism and penetrating the winding roller 2, a rotation restricting device is provided on both left and right sides of the screen P. It may be arranged. Furthermore, the screen P may be formed of a coarse mesh, for example, an upper first screen portion P1, and a dense mesh, for example, a lower second screen portion P2. Further, the fixed shaft is not limited to a prismatic shape, and other physical methods capable of restricting rotation may be taken.

  In addition, the contact member is not limited to the tension roller 3. For example, a predetermined wire may be stretched between the brackets R1 and R2 as the contact member. Moreover, you may arrange | position the rod member and roller provided with the length of about 10 cm so that it may protrude inward from each of bracket R1, R2.

  Further, as shown in FIG. 2, the rotation restricting device supports a tension roller 3 as a contact member so as to be parallel to the take-up roller 2 by a pair of left and right brackets R1, R2. The tension roller 3 comes into contact with a predetermined return torque of the rotation restricting device from the back surface of the tension surface depending on the screen P wound by the rotation restricting device.

  That is, in the rotation restricting device arranged on the lower end side of the screen P shown in FIG. 2, the counterclockwise rotational force acting in conjunction with the winding operation of the screen P by the winding roller 2 in the clockwise direction, The tension roller 3 abuts on the back side of the screen P taken up by the take-up roller 2 and receives it. When the take-up roller 2 further rotates clockwise in this state, the screen P is taken up by the take-up roller 2 and the rotation restricting device moves upward.

  In addition, a handle 4 formed in a downward tongue-like shape is attached to substantially the center of the tension roller 3 in order to pull the screen P with fingers. And the attachment part of the tension roller 3 and the handle 4 can be rotated, and when the screen P is wound up, the structure which the tension roller 3 to contact | abut rotates may be selected.

  Next, an example of use and operation of the best mode of the present invention configured as described above will be described. First, as shown in FIGS. 1A and 1B, in a state where the screen P is drawn out from the winding roller 2 of the rotation restricting device disposed on the lower end side of the screen P, the tension roller 3 in the rotation restricting device. By pulling the handle 4 slightly downward, the rotation prevention of the winding roller 2 in the winding direction is released, and the screen P is wound around the winding roller 2. On the other hand, when the screen 4 is pulled out from the winding roller 2 by pulling the handle 4 downward, rotation of the winding roller 2 in the winding direction is prevented at an arbitrary position of the screen P. It can be pulled out to the position.

  3 to 5 show other examples in the best mode for carrying out the present invention.

  In addition, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol to the part of the structure substantially the same as the structure in above-described embodiment. That is, in this example, as shown in FIG. 3A, the screen P includes a first screen portion P1 with a coarse mesh arranged on the upper side and a first mesh part with a fine mesh arranged on the lower side. 2 screen portions P2.

  Further, as shown in FIGS. 3 (a) and 3 (b), the rotation restricting device is configured so that each of the first screen portion P1 and the second screen portion P2 is individually wound around the first screen portion P1. It arrange | positions at each of the upper end side and the lower end side of the 2nd screen part P2.

  As shown in FIGS. 3A and 3B, the rotation restricting device disposed on the upper end side of the screen P can rotate the take-up roller 2 to a pair of brackets R1 and R2 formed in a substantially circular shape. I support it. A rotating roller 6 around which an endless chain 5 for rotating operation is wound is rotatably supported on one bracket R1, and a prismatic rotating shaft 6A at the center of the rotating roller 6 is attached to the other bracket R2. The winding roller 2 is rotated by an operation of attaching to the square hole portion 2A on the other end side of the winding roller 2 for winding the screen P, one end of which is rotatably supported, and pulling the endless chain 5 in one direction. It is.

  Further, the rotary roller 6 is provided with a clutch spring 7 and a clutch mechanism portion 8, and is configured to prevent the winding roller 2 from rotating even when the screen P hanging from the winding roller 2 is pulled. A device T for changing the outlet from the bracket R1 of the chain 5 is configured. And as shown in FIG. 4, the rotation control apparatus arrange | positioned at the upper end side of the screen P can be directly attached to attachment surfaces, such as a wooden frame and a sash, by the upper bracket Q of substantially U-shaped frame shape. .

  As shown in FIG. 4, the changing device T for the outlet from the bracket R1 of the endless chain 5 is formed in a downward tongue shape. The changing device T pivotally attaches one bracket R1 (or R2) to the bracket base, and a single locking protrusion or a plurality of locking protrusions provided on the bracket R1 (or R2). Any one of the protrusions is to be locked in a corner portion of the bracket base or an engagement hole formed in the inner surface of the bracket base, and the operation position (right or left) and upper side of the endless chain 5 The mounting position of the bracket Q (with a ceiling or a wall) can be supported.

  Next, an example of use / operation will be described for another example of the best mode of the present invention configured as described above. By pulling the endless chain 5 in the winding direction of the screen P in the state where the first screen portion P1 is pulled out from the winding roller 2 of the rotation restricting device arranged on the upper end side of the screen P, FIG. ), The first screen portion P1 is taken up by the take-up roller 2 in the rotation restricting device arranged on the upper end side until the position of the mesh S. Then, by pulling the handle 4 of the tension roller 3 in the rotation restricting device arranged on the lower end side of the screen P downward, as shown in FIG. 5B, the winding roller 2 in the rotation restricting device arranged on the lower end side. The second screen portion P2 is extracted from

  On the other hand, in a state where the second screen portion P2 is pulled out from the winding roller 2 of the rotation restricting device arranged on the lower end side of the screen P, the handle 4 of the tension roller 3 in the rotation restricting device on the lower end side is slightly lowered. To prevent the winding roller 2 from rotating in the winding direction, and the second screen portion P2 winds around the winding roller 2 in the rotation restricting device disposed on the lower end side to the position of the mesh S. It is done. Then, by pulling the endless chain 5 in the rotation restricting device arranged on the upper end side of the screen P in the drawing direction of the screen P, the first screen portion P1 is drawn.

  In the present invention, the screen P can be pulled out and wound on the upper end side and the lower end side of the screen P by the rotation restricting device disposed on the upper end side of the screen P and the rotation restricting device disposed on the lower end side of the screen P, respectively. It becomes possible and can be widely used as various roll blinds 1.

The structure of the roll blind by which the rotation control apparatus is arrange | positioned at the lower end side of a screen is shown, (a) is a front view of the state which pulled out the screen, (b) is XX sectional drawing in (a). It is a perspective view which shows the structure of the roll blind by which the rotation control apparatus is arrange | positioned at the lower end side of the screen. The structure of the roll blind by which the rotation control apparatus is arrange | positioned at the upper end side and lower end side of a screen is shown, (a) is a front view of the state which pulled out the screen, (b) is a side view of the state which pulled out the screen. It is a perspective view which shows the structure of the rotation control apparatus arrange | positioned at the upper end side of a screen. It explains the use state of the roll blind in which the rotation restricting devices are arranged on the upper end side and the lower end side of the screen. (A) is a side view of the screen being wound, and (b) is a side view of the screen being pulled out. It is.

Explanation of symbols

P ... Screen P1 ... First screen part P2 ... Second screen part Q ... Upper bracket Q1 ... Mounting frame part Q2 ... Hook part Q3 ... Fixed piece R1, R2 ... Bracket S ... Grid T ... Changing device 1 ... Roll Blind 2 ... Winding roller 2A ... Square hole part 3 ... Tension roller 4 ... Handle 5 ... Endless chain 6 ... Rotating roller 6A ... Rotating shaft 7 ... Clutch spring 8 ... Clutch mechanism part

Claims (11)

  Roll equipped with a rotation restricting device that locks the screen drawn out from the take-up roller at an arbitrary position and releases the lock by slightly pulling out the screen drawn out from the take-up roller and winds the take-up roller. In the blind, the rotation restricting device is disposed on the lower end side of the screen in a free state on the screen with the upper end side suspended and fixed, and the screen wound down by the rotation restricting device is suspended near the rotation restricting device. A roll blind comprising an abutting member that abuts with a predetermined return torque of a rotation restricting device from a back surface of a tension surface.   The roll blind according to claim 1, wherein the contact member is a tension roller.   The roll blind according to claim 1 or 2, wherein the screen is formed of a first screen portion made of a coarse mesh and a second screen portion made of a fine mesh.   Roll equipped with a rotation restricting device that locks the screen drawn out from the take-up roller at an arbitrary position and releases the lock by slightly pulling out the screen drawn out from the take-up roller and winds the take-up roller. In the blind, the screen is formed of a first screen portion with a coarse mesh and a second screen portion with a dense mesh, and the rotation restricting device includes a first screen portion and a second screen portion. The tension that hangs down the screen wound by the rotation restricting device is placed near the upper end side of the screen and the lower end side of the screen in the free state so that each is individually wound. A contact member that contacts the back surface of the surface with a predetermined return torque of the rotation restricting device is provided. Roller blind, wherein the door.   The roll blind according to claim 4, wherein the contact member is a tension roller.   The roll blind according to claim 1, wherein a handle for pulling the screen with fingers is attached to the tension roller.   The rotation regulating device attaches a winding member capable of winding to a winding roller, rotatably supports the winding roller on a fixed shaft, and attaches the winding roller in a winding direction by an urging means. In the winding roller, the winding operation by the biasing force of the biasing means, the rewinding operation based on the rotation of the winding roller, and the winding by the biasing means after the rewinding operation. The roll blind according to any one of claims 1 to 6, further comprising a clutch device capable of selecting a restriction operation for preventing rotation of the roller.   The fixed shaft of the rotation restricting device passes through the take-up roller in order to maintain the parallelism of the take-up roller and the tension roller, and the tension roller mounting part that contacts the back of the screen is attached to the fixed shaft so as not to rotate. The roll blind according to any one of claims 1 to 7.   The roll blind according to any one of claims 1 to 8, wherein the rotation restricting device is disposed on both left and right sides of the screen in order to maintain parallelism between the winding roller and the tension roller of the screen.   The roll blind according to claim 1, wherein the contact member is rotatable.   The roll blind according to claim 6, wherein the handle is rotatable.

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