JP6105331B2 - Roll screen - Google Patents

Description

  The present invention relates to a roll screen in which a screen suspended from a winding pipe is folded back by a weight bar and connected to the vicinity of the winding pipe.

  As a roll screen having such a configuration, one disclosed in Patent Document 1 is known. What is shown here is an upper end support bar attached to the ceiling or wall, a pair of support brackets arranged opposite to both ends of the support bar, and both ends pivotally supported by these support brackets. Winding rods along the bar, light-transmitting parts and non-light-transmitting parts are formed alternately and continuously in the winding direction, one end is fixed to the upper end support bar, and the other end is wound so that it can be fed to the winding rod And a double-folded screen that is folded at the lower end, and a weight body that is attached so as to be always positioned at the folded portion of the screen and applies tension to the screen. The weight main body is in contact with the inner surface of the folded portion of the screen and is inserted into the inner surface of the cylindrical movable pulley so as to be able to roll. And a pair of lower caps, one end of which is inserted into cap attachment holes at both ends of the lower shaft so as to cover the end face of the moving pulley, and the other end extends downward under its own weight. And a bottom cover that is provided between the pair of lower caps and covers the folded portion of the screen.

JP 2009-79431 A

  In such a conventional roll screen, since the screen is doubled up and down, a screen about twice as long as the product height is required, and that amount of screen is wound around the winding rod. In addition, since the screen has a configuration in which light-transmitting portions and light-transmitting portions are alternately formed, there is a problem that the screen is likely to be disturbed when the screen is moved up and down as compared with a normal roll screen.

  In addition, when the screen is extended and the weight main body comes into contact with the upper surface of the window frame, the weight main body can be rotated about the lower shaft, but the sliding bearing is only press-fitted to the moving pulley. The sliding bearing may slip when the moving pulley rotates around the lower shaft, which may affect the smooth rotation of the moving pulley.

  In addition, since the moving pulley is cylindrical, in order to maintain strength so that the moving pulley does not bend when the product width of the roll screen is large, the thickness of the moving pulley must be increased. It must be large. In that case, since the space | interval of the screen before and behind turned up becomes large, there exists a problem that the amount of light leaks will become large easily even if it tries to cover the front and back transmissive | pervious part and a non-transparent part.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a roll screen that can correct the screen turbulence and that the screen smoothly moves up and down and does not increase the distance between the front and rear screens.

In order to achieve the above-mentioned object, the present invention is such that a winding pipe is rotatably supported by a side bracket, one end of a screen is connected to the winding pipe so as to be wound and unwound, and the other end of the screen is In a roll screen that is suspended from the take-up pipe and folded by a weight bar and connected to a fixing member provided near the take-up pipe,
The weight bar is fixed to the end surface of the weight body, the rotating pipe around which the folded portion of the screen is wound, the pipe cap engaged with the end of the rotating pipe, the weight main body disposed below the rotating pipe, A side cap for bearing the pipe cap, an adjustment weight that is provided in the weight body and can be adjusted from the lower surface of the weight body, and a weight bar cover that covers the lower surface of the weight body,
The outer peripheral surface of a part of the pipe cap is formed in a polygonal cross section, and is fitted to the inner peripheral surface formed in the polygonal cross section of the rotating pipe so as not to be relatively rotatable,
A concave portion extending in the longitudinal direction is formed on the outer peripheral surface of the rotating pipe, and each vertex of the polygonal cross section of the inner peripheral surface is located at a position offset in the circumferential direction from the concave portion formed on the outer peripheral surface,
The weight bar cover is detachable from the weight body, prevents exposure of the adjustment weight from the bottom surface of the weight body, functions as a cushioning material on the bottom surface of the weight bar, and is controlled by the side cap in the lateral direction. To do.

Also , the bottom of the side cap is provided with a notch continuous to the groove formed in the bottom of the weight body, the weight bar cover is provided across the groove and the notch, and the end of the weight bar cover is the side The movement is restricted by the side wall of the cap.

In addition , the number of recesses on the outer peripheral surface of the rotating pipe matches the number of vertices of the polygonal cross section on the inner peripheral surface.

  According to the present invention, when the adjustment weight is provided in the weight bar so that the position of the adjustment bar can be adjusted, when the screen is distorted when the screen is lifted, the adjustment weight is shifted to prevent the turbulence. be able to.

  The position of the adjustment weight can be adjusted from the lower surface of the weight bar. At that time, the adjustment weight is exposed from the lower surface of the weight bar, but the adjustment weight is prevented from being exposed by covering the lower surface with the weight bar cover after adjustment. The design property can be improved. Since the weight bar cover also functions as a cushioning material, even if the weight bar comes into contact with the window frame or the like when the roll screen is lowered to the lowest position, the occurrence of collision noise can be suppressed.

  Since the rotating pipe has a plurality of recesses on the outer peripheral surface, the strength of the rotating pipe is increased and the screen folded back during lifting is less likely to slip with respect to the rotating pipe. Is possible. Furthermore, since a part of the pipe cap having the outer peripheral surface of the polygonal cross section is fitted to the inner peripheral surface of the rotary pipe having the inner peripheral surface of the polygonal cross section, the rotary pipe and the pipe cap can be reliably rotated integrally. Thus, the rotating pipe can rotate smoothly with respect to the side cap.

  Since each vertex of the polygonal cross section of the inner peripheral surface of the rotating pipe is located at a position offset from the concave portion of the outer peripheral surface, the thickness of the rotating pipe is not partially increased, and as a result, the rotating pipe It is possible to equalize the thickness of the rotating pipe in the circumferential direction with a small radial dimension while maintaining the strength. For this reason, the space | interval of the front and back screen can be made small and the amount of light leakage can be made small when making a screen into a shielding state.

  Since the left and right positioning of the weight bar cover can be performed by the side cap that supports the rotating pipe, the number of parts can be reduced.

  Since the notch part which continues in the groove part formed in the bottom part of a weight main body is formed in the bottom part of a side cap, a weight cover can be provided over the lower surface full length of a weight bar.

  Furthermore, by matching the number of vertices of the polygonal cross section of the inner peripheral surface of the rotating pipe with the number of recesses on the outer peripheral surface, the thickness of the rotating pipe can be further equalized in the circumferential direction.

1 is an overall perspective view of a roll screen according to an embodiment of the present invention. It is a sectional side view of the roll screen which concerns on embodiment. It is a fragmentary sectional view of the weight bar concerning an embodiment. It is AA sectional drawing of FIG. It is a perspective view which shows the assembly | attachment state of a side cap and a weight bar cover, (a) shows the disassembled state, (b) shows the assembled state, respectively. It is a fragmentary sectional view which shows the state which assembled | attached the screen to the weight bar. It is a sectional side view of the weight bar and the screen in the vicinity of the weight bar, where (a) shows the case where the screen is in a shielding state, and (b) shows the case where the screen is in a dimming state. It is a perspective view of a weight bar and a screen in the vicinity of the weight bar, where (a) shows a state where a weight bar cover is attached to the weight body, and (b) shows a state where the weight bar cover is removed from the weight body. , Respectively.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the roll screen according to the embodiment is wound around side brackets 14 provided at both ends of a set frame 12 that is fixed to a window frame, a ceiling, or the like (not shown) via the bracket 11. Both ends of the take-up pipe 16 are rotatably supported, and one end of a screen 18 is connected to the take-up pipe 16 so as to be able to take up and unwind. The other end of the screen 18 hangs down from the take-up pipe 16 and is turned up by the weight bar 20 and is fixed to a fixing portion (fixing member) 12 a formed on the set frame 12 at the upper rear side of the take-up pipe 16. Has been. More specifically, a fixed plate 19 is connected to the other end of the screen 18, and the fixed plate 19 is inserted into the internal space 12a-1 of the fixed portion 12a, whereby the other end of the screen 18 is fixed to the fixed portion. 12a is fixed. The screen 18 suspended from the take-up pipe 16 is located on the front side of the weight bar 20, and the screen 18 folded back by the weight bar 20 is located on the rear side of the weight bar 20. The screen 18 is in a double state. Further, the screen 18 is maintained in the expanded state by pulling the folded portion downward by the weight of the weight bar 20. The winding pipe 16 is rotated by operating an operation chain 22 provided at one end of the side bracket 14, and when the operation of the operation chain 22 is stopped, the winding pipe 16 is moved by a known stopper. The stop position can be maintained.

  The screen 18 is formed with a transmissive portion 18a that transmits light to some extent and a non-transmissive portion 18b that has a lower light transmittance than the transmissive portion 18a alternately and continuously in a vertical direction. Preferably, the transmission part 18a is made of a transparent or translucent cloth, and the non-transmission part 18b is made of a light shielding cloth. Preferably, the height dimension of the transmission part 18a is set to be equal to or less than the height dimension of the non-transmission part 18b, more preferably smaller than the height dimension of the non-transmission part 18b.

  As shown in FIGS. 3 to 5, the weight bar 20 includes a rotating pipe 30 that extends with the width direction of the screen 18 as a longitudinal direction and on which the screen 18 is wound, and both ends of the rotating pipe 30 so as to rotate integrally with the rotating pipe 30. A pair of pipe caps 32 that engage with each other, a weight body 34 that is disposed below and parallel to the rotary pipe 30 and extends in the width direction of the screen 18, and fixed to both end surfaces of the weight body 34, respectively. A pair of side caps 36 that respectively receive the corresponding pipe caps 32, an adjustment weight 38 that is provided in the weight main body 34 and can be adjusted in position from the lower surface of the weight main body 34, and a weight bar that covers the lower surface of the weight main body 34 And a cover 40.

  The rotary pipe 30 is located inside the folded portion of the screen 18 so that the screen 18 is wound around. The outer peripheral surface is formed in a circular cross section, and the inner peripheral surface is formed in a polygonal cross section, for example, a hexagonal cross section. Yes. On the outer peripheral surface, six concave portions 30a are formed over the entire length in the longitudinal direction at equal intervals in the circumferential direction. The recess 30 a can increase the strength of the winding pipe 30, reduce slippage with the screen 18, and rotate as the screen 18 moves up and down.

  Preferably, the recesses 30a on the outer peripheral surface and the vertexes 30b on the inner peripheral surface are set to the same number, and the circumferential positions of the hexagonal apexes 30b on the inner peripheral surface are intermediate between the adjacent recesses 30a on the outer peripheral surface. It is offset in the circumferential direction so as to be in position. As a result, the thickness of the rotating pipe 30 does not become extremely large in part, the thickness is equalized in the circumferential direction, and the strength is improved by the polygonal cross-sectional shape of the inner peripheral surface and the recess 30a. As a result of the increase, the outer dimension in the radial direction can be reduced and reduced in weight.

  The pipe cap 32 engages with the end portion of the rotary pipe 30 so as to close the end portion of the rotary pipe. The pipe cap 32 is provided on the rotary shaft portion 32 a supported by the side cap 36 and the inner peripheral surface of the rotary pipe 30. It consists of a fitting shaft portion 32b to be fitted, and a flange portion 32c located between the rotating shaft portion 32a and the fitting shaft portion 32b. While the outer peripheral shape of the rotating shaft portion 32a is formed in a circular cross section, the outer peripheral shape of the fitting shaft portion 32b is formed in a hexagonal cross section, and as shown in FIG. The inner peripheral surface of the rotary pipe 30 is fitted with the inner peripheral surface of the rotary pipe 30 so as to rotate integrally with the rotary pipe 30. The flange portion 32c has a conical surface 32c-1 that has the largest radial dimension on the rotating shaft portion 32a side in the axial direction and becomes smaller toward the fitting shaft portion 32b side. On the end surface 32d of the flange portion 32c on the side of the rotation shaft portion 32a, a shoulder portion 32d-1 that slightly protrudes in the same direction as the rotation shaft portion 32a is formed on the outer diameter side slightly from the rotation shaft portion 32a. The end surface 32d on the outer diameter side of the shoulder portion 32d-1 is formed so as to be inclined from the rotation shaft portion 32a toward the fitting shaft portion 32b toward the outer diameter side. With this shape of the end face 32d, the contact area between the end face 32d of the pipe cap 32 and the side cap 36 is reduced, so that friction with the side cap 36 when the pipe cap 32 is rotated can be reduced. On the other hand, as shown in FIG. 3, an insertion recess 32e into which the end of the rotary pipe 30 is fitted is formed on the end surface of the flange 32c on the side of the fitting shaft 32b. Yes.

  The weight main body 34 is disposed below the rotary pipe 30 and the screen 18, and has a ceiling portion 34 a that protrudes downward so as to follow the rotary pipe 30. A groove 34c is formed on the bottom 34b over the entire length in the longitudinal direction. In the weight main body 34, support pieces 34d projecting from the front and rear inner wall surfaces 34g are formed over the entire length in the longitudinal direction so as to support the front and rear end portions of the adjustment weight 38 from below. A rail portion 34e having a substantially cylindrical shape is formed at the intermediate position in the front-rear direction on the lower side of the ceiling portion 34a, and the weight main body 34 and the side cap 36 are connected to both ends of the rail portion 34e. The connecting screw 42 is screwed.

  The side cap 36 has a side wall main body 36 a for closing the end of the weight main body 34 and for bearing the pipe cap 32. Inside the side wall main body 36a, there are a bearing hole 36b for rotatably supporting the rotary shaft portion 32a of the pipe cap 32, and an insertion hole 36e through which the connecting screw 42 is inserted in alignment with the rail portion 34e of the weight main body 34. Is formed. Further, a support receiving portion 36f that protrudes from the side wall main body 36a toward the weight main body and has a shape corresponding to a part of the inner shape of the weight main body 34 is provided. A cutout 36 d is formed in the bottom 36 c of the side wall main body 36 a so as to be continuous with the groove 34 c of the weight main body 34.

  The adjustment weight 38 is made of a metal plate or the like having a high density, and has a female screw hole 38a formed at the center, and a fixing screw 44 is screwed into the female screw hole 38a. The adjustment weight 38 is placed on the support piece 34d of the weight main body 34 and is movable along the support piece 34d. The fixing screw 44 is screwed into the female screw hole 38a by a driver or the like through the groove 34c, and the tip 44a of the fixing screw 44 protruding from the upper surface of the adjustment weight 38 is brought into pressure contact with the rail portion 34e of the weight body 34, thereby adjusting the weight 38. Can be fixed to the weight main body 34. On the other hand, when the fixing screw 44 is loosened, the pressure contact of the tip 44a of the fixing screw 44 to the rail portion 34e is released, and the adjustment weight 38 becomes movable along the support piece 34d.

  The weight bar cover 40 is made of a soft and elastic material such as a soft resin and functions not only as a cover for the lower surface of the weight main body 34 but also as a cushioning material. The weight bar cover 40 has a bottom 40a having a width dimension capable of closing the groove 34c of the weight main body 34, and protrudes upward from the both front and rear ends of the bottom 40a so as to expand stepwise in the front-rear direction. And an engaging portion 40b that can be engaged with the inner surface of 34b. The weight bar cover 40 has a length over the entire length of the groove 34c of the weight main body 34 and the notch 36d of the side cap 36 continuous to the groove 34c, and is detachably provided on the weight main body 34 and the side cap 36. Both ends of the weight bar cover 40 are restricted from moving in the longitudinal direction by the side wall body 36 a of the side cap 36.

  The weight bar 20 is configured by assembling the above components, but specifically, it can be performed as follows. The rotating shaft portions 32a of the pipe caps 32 are respectively fitted in the both ends of the rotating pipe 30 in advance. Further, the rotating shaft portion 32a of the one pipe cap 32 is inserted into the bearing hole 36b of the one side cap 36, and the support receiving portion 36f of the side cap 36 is fitted to one end portion of the weight main body 34, so that the side The connecting screw 42 is inserted from the outside into the insertion hole 36 e of the cap 36, the connecting screw 42 is screwed into the rail portion 34 e of the weight main body 34, and one side cap 36 is fixed to one end of the weight main body 34.

  Next, an adjustment weight 38 in which a fixing screw 44 is screwed in advance into the female screw hole 38a is inserted from the other end of the weight main body 34, and a head portion 44b of the fixing screw 44 projects downward from between both support pieces 34d. Thus, the front and rear ends of the adjustment weight 38 are supported by the support piece 34d. Then, while inserting the rotation shaft portion 32a of the other pipe cap 32 into the bearing hole 36b of the other side cap 36, the support receiving portion 36f of the side cap 36 is fitted to the other end portion of the weight body 34, and As described above, the side cap 36 and the weight main body 34 are fixed by the connecting screw 42. Next, the adjustment weight 38 is slid on the support piece 34d through the groove 34c of the weight main body 34 to adjust the position, the fixing screw 44 is screwed in, and the tip 44a is pressed against the rail portion 34e to adjust the adjustment weight 38. The position of the adjustment weight 38 is fixed.

  Finally, as shown in FIG. 5, the engaging portion 40b of the weight bar cover 40 is engaged with the inner surface of the bottom portion 34b of the weight main body 34 and the bottom portion 36c of the side cap 36 by elastic deformation. Then, as shown in FIG. 5B, the bottom 40a at the end of the weight bar cover 40 is positioned in the notch 36d. Thereby, the movement of the weight bar cover 40 in the front-rear direction is regulated by the bottom 34b of the weight main body 34 and the bottom 36c of the side cap 36, and the movement in the left-right direction is regulated by the side wall main body 36a of the side cap 36, The weight bar cover 40 does not move. In this way, the design can be improved by the weight bar cover 40 without exposing the adjustment weight 38.

  As shown in FIGS. 6 and 7, the screen 18 is attached to the weight bar 20 assembled in this way. That is, the screen 18 is doubled in the front-rear direction by being wound between the rotary pipe 30 and the weight main body 34 and wound around the outer peripheral surface of the rotary pipe 30.

  Next, the operation of the present embodiment will be described.

  The operation chain 22 is operated to rotate the take-up pipe 16 to change the length of the screen 18 hanging from the take-up pipe 16, and as shown in FIG. When the transmissive portion 18a of the other screen is completely overlapped with the non-transmissive portion 18b of the other screen, the screen 18 is shielded. If the height dimension of the transmission part 18a is set to be smaller than the height dimension of the non-transmission part 18b, the end part of the non-transmission part 18b on one side overlaps the end part of the non-transmission part 18b on the other side. As a result, it is possible to prevent light from leaking between the front and rear screens 18 and to further improve the shielding state. Moreover, since the radial dimension of the rotary pipe 30 can be reduced, the distance between the front and rear screens 18 can be reduced, and the amount of light leakage can be reduced.

  When the operation chain 22 is operated to rotate the take-up pipe 16 so that the transmissive portion 18a of one of the front and rear screens 18 overlaps with the transmissive portion 18a of the other screen, the screen 18 is dimmed. . The dimming state can be changed by changing the overlapping degree of the transmission parts 18a.

  When one of the operation chains 22 that hangs back and forth is pulled down and the screen 18 is wound around the take-up pipe 16, the screen 18 turns back the rotary pipe 30, and the screen 18 and the weight bar 20 rise. I will do it. On the contrary, when the screen 18 is unwound around the winding pipe 16 by pulling down the other one of the operation chains 22 that hangs back and forth, the screen 18 folds the rotating pipe 30 and the screen 18 and the weight bar 20 It goes down. When the weight bar 20 is lowered to the lowest position and abuts against a window frame or the like, the weight bar cover 40 also has a function as a cushioning material. Will be.

  The recess 18a on the outer peripheral surface of the rotary pipe 30 makes it difficult for the screen 18 to slip with respect to the rotary pipe 30, and since the rotary pipe 30 is reduced in diameter and weight, the screen 18 moves up and down. The rotating pipe 30 and the pipe cap 32 rotate smoothly with respect to the side cap 36. Further, even if the screen 18 is displaced in the width direction and its side end rides on the flange 32c of the pipe cap 32, it slides down in the direction of the rotating pipe 30 by the conical surface 32c-1 and is corrected to the original position. Thus, it is possible to prevent the occurrence of turbulence, bending of the screen end, or fraying when the screen 18 is wound around the winding pipe 16.

  If the turbulence still occurs, the position of the adjustment weight 38 can be adjusted. One factor of the turbulence is that the screen 18 wound around the winding pipe 16 is unbalanced in the width direction. Therefore, the weight bar cover 40 attached to the lower portion of the weight body 34 is elastically deformed and removed as shown in FIG. 8A, and the groove 34c of the weight body 34 is opened as shown in FIG. 8B. To do. Then, after loosening the fixing screw 44 and adjusting the position by sliding the adjustment weight 38 on the support piece 34d, the fixing screw 44 is screwed again to fix the position of the adjustment weight 38. Finally, the weight bar cover 40 is elastically deformed as described above and attached to the groove 34c of the weight body 34 and the notch 36d of the side cap as shown in FIG.

  Thus, by finely adjusting the position of the adjustment weight 38 in the screen width direction, the occurrence of winding disturbance can be prevented.

14 Side bracket 16 Winding pipe 18 Screen 20 Weight bar 30 Rotating pipe 30a Recess 30b Apex 32 Pipe cap 34 Weight body 34b Bottom 34c Groove 36 Side cap 36a Side wall 36c Bottom 36d Notch 38 Adjustment weight 40 Weight bar cover

Claims (3)

A winding pipe (16) is rotatably supported by the side bracket (14), one end of the screen (18) is connected to the winding pipe so as to be wound and unwound, and the other end of the screen is connected to the winding pipe. In the roll screen that is suspended from the weight bar (20) and connected to a fixing member provided near the winding pipe,
The weight bar (20) is disposed below the rotating pipe (30), the rotating pipe (30) around which the folded portion of the screen is wound, the pipe cap (32) engaged with the end of the rotating pipe (30), and the rotating pipe (30). Weight body (34), a side cap (36) fixed to the end surface of the weight body (34) and bearing the pipe cap (32), and a weight body (34) provided in the weight body (34). ) And an adjustment weight (38) whose position can be adjusted from the lower surface, and a weight bar cover (40) covering the lower surface of the weight body (34),
The outer peripheral surface of a part of the pipe cap (32) is formed in a polygonal cross section, and is fitted to the inner peripheral surface formed in a polygonal cross section of the rotating pipe (30) so as not to be relatively rotatable.
A concave portion (30a) extending in the longitudinal direction is formed on the outer peripheral surface of the rotating pipe, and each vertex (30b) of the polygonal cross section of the inner peripheral surface is offset in the circumferential direction from the concave portion (30a) formed on the outer peripheral surface. Each at the position
The weight bar cover (40) is detachably attached to the weight body (34) from a groove (34c) formed in the bottom (34b) of the weight body (34), and an adjustment weight (38) from the lower surface of the weight body (34). , And functions as a cushioning material on the lower surface of the weight bar, and movement in the left-right direction is restricted by the side cap (36) ,
Two weights (34d) for supporting the front and rear ends of the adjustment weight (38) from below are provided in the weight body (34) so as to face each other in the front-rear direction and above the groove (34c). Roll screen.   The bottom (36c) of the side cap is provided with a notch (36d) continuous with the groove (34c) formed in the bottom (34b) of the weight body, and the weight bar cover is provided across the groove and the notch. The roll screen according to claim 1, wherein movement of the end portion of the weight bar cover is restricted by the side wall (36a) of the side cap (36).   The roll screen according to claim 1 or 2, wherein the number of recesses on the outer peripheral surface of the rotating pipe matches the number of vertices of the polygonal cross section of the inner peripheral surface.