JP2018193776A - Shading device - Google Patents

Abstract

To provide a shading device capable of stabilizing brake performance.SOLUTION: The shading device comprises a brake unit for braking movement of multiple codes, and multiple shading materials. The multiple codes, which are braked by the brake unit accompanying a self-weight descent of the shading materials, are disposed so that the multiple codes are directly or indirectly oriented in a direction different from each other. The directions different from each other are the directions that counteract the forces acting on the brake unit.SELECTED DRAWING: Figure 37

Description

  The present invention relates to a shielding device.

  Shielding devices such as roll curtains, blinds, accordion curtains, pleated screens, and partitions are in practical use. For example, if the shielding device is a horizontal blind, when it is opened, the slat and the bottom rail, which are shielding members, are pulled up by pulling the operation cord. When the horizontal blind is closed, generally, the slat and the bottom rail are lowered by gravity using the weight of the slat and the bottom rail. At this time, a mechanism is known in which a braking force is applied to the lifting cord that moves as the slat and the bottom rail move (particularly, due to its own weight drop), thereby reducing the downward momentum of the slat and the bottom rail. Of course, such a movement is not limited to the weight drop. For example, an automatic climb is applied to a roll curtain, and an automatic lateral movement is applied to an accordion curtain.

  Patent Document 1 discloses a braking device that is provided inside, for example, a head box and brakes the movement of an elevating cord. By using such a braking device, it is possible to reliably provide resistance to the movement of the lifting / lowering cord accompanying the movement of the shielding material.

International Publication WO2016 / 194939

  However, it has been found that in the shielding device using the braking device disclosed in Patent Document 1 (disclosed in the same document), the braking performance may become unstable due to blurring in the braking device.

  The present invention has been made in view of such circumstances, and provides a shielding device capable of stabilizing braking performance.

  According to a first aspect of the present invention, there is provided a shielding device that includes a braking device that brakes movement of a plurality of cords and a shielding material, and is braked by the braking device as the weight of the shielding material drops. There is provided a shielding device in which the plurality of cords are arranged so as to be directed directly or indirectly in different directions, and the different directions are directions in which a force acting on the braking device is canceled.

  Hereinafter, various embodiments of the present invention will be exemplified. The embodiments described below can be combined with each other.

  Preferably, the brake device includes one end port and the other end port, and the plurality of cords are inserted into the brake device through the one end port and the other end port so as to be able to brake, and one end of the plurality of cords Are respectively led out from the one end opening, and the other ends of the plurality of cords are led out from the other end opening, respectively, and are configured to go in directions opposite to each other.

  According to a second aspect of the present invention, a head box, a braking device, and a plurality of cords including first and second cords are provided, and the braking device includes one end port and the other end port. The two cords are inserted into the braking device through the one end port and the other end port and can be braked, and one ends of the first and second cords are led out from the one end port, respectively. The other end of the cord is led out from the other end opening, and the braking device is provided between the first and second support members.

  The present inventors investigated the cause of the blurring of the braking device. In the configuration of Patent Document 1, all the components are led out from the headbox through the support member provided on one side of the braking device from the lifting / lowering cord. It was found that a unidirectional force was always applied when the device was operating, and that this unidirectional force was the cause of the blur. And based on such knowledge, it discovered that the blurring of a braking device could be reduced by arrange | positioning a braking device between two support members, and came to completion of this invention. Further, it was found that the braking performance is stabilized by reducing the blurring of the braking device, and problems such as the bottom rail falling down are suppressed.

  Preferably, the braking device is disposed between the first and second support members.

  Preferably, the first support member is disposed between the cord one end outlet and the braking device.

  Preferably, the other end port faces the direction of the second support member, and a turning member is provided between the other end port and the second support member, and the first cord is turned by the turning member.

  Preferably, the turning member is provided on an attachment attached to the braking device.

  Preferably, the other end is directed in a short direction of the head box.

FIG. 1A is an exploded perspective view of a braking device 1000 according to an embodiment of the present invention, FIG. 1A is a view seen from the front upper side, and FIG. FIG. 2A is a front perspective view of a braking device 1000 according to an embodiment of the present invention, FIG. 2A is a view with an attachment 200 attached, and FIG. 2B is a view showing an aspect with the attachment 200 removed. FIG. 3A is a rear perspective view of the braking device 1000 according to the embodiment of the present invention, FIG. 3A is a view showing an aspect with the attachment 200 attached, and FIG. 3B is a view showing an aspect with the attachment 200 removed. FIG. 4A is a left side view of the braking apparatus 1000 according to the embodiment of the present invention, FIG. 4A is a view with an attachment 200 attached, and FIG. 4B is a view showing an aspect with the attachment 200 removed. FIG. 5A is a plan view of a braking device 1000 according to an embodiment of the present invention, FIG. 5A is a diagram showing a mode with an attachment 200, and FIG. 5B is a diagram showing a mode with the attachment 200 removed. FIG. 6A is a bottom view of the braking device 1000 according to the embodiment of the present invention, FIG. 6A is a view showing an aspect with the attachment 200 attached, and FIG. 6B is a view showing an aspect with the attachment 200 removed. It is a PP line cutting part sectional view of Drawing 4B. It is the QQ line cutting part sectional view of Drawing 5B. FIG. 9 is a diagram showing how the braking device 1000 of the present invention brakes the cord CD with reference to FIG. 7. FIG. 9A shows a state in which no tension is applied to the cord CD (steady state), and FIG. FIG. 9C is a diagram summarizing the rotation directions of the respective members when the state is changed from FIG. 9A to FIG. 9B, in a state where the cord CD is sandwiched between the knurled 240 and the roller unit 42. It is a perspective view of the attachment 200 which concerns on embodiment of this invention. FIG. 11A is a plan view of the attachment 200 according to the embodiment of the present invention, and FIG. 11B is a bottom view of the attachment 200 according to the embodiment of the present invention. FIG. 12A is a front view of the attachment 200 according to the embodiment of the present invention, and FIG. 12B is a rear view of the attachment 200 according to the embodiment of the present invention. FIG. 13A is a left side view of the attachment 200 according to the embodiment of the present invention, and FIG. 13B is a right side view of the attachment 200 according to the embodiment of the present invention. 14A is a cross-sectional view taken along the line CC in FIG. 11B, and FIG. 14B is a cross-sectional view taken along the line CC when three brake devices 1000 and three cords CD are inserted in addition to FIG. 14A. 15A is a DD cross-sectional view in FIG. 11A, and FIG. 15B is a DD cross-sectional view when three brake devices 1000 and three cords CD are inserted in addition to FIG. 15A. It is AA sectional drawing in FIG. 12A. 17A is a cross-sectional view taken along line BB in FIG. 12A, and FIG. 17B is a cross-sectional view taken along line EE in FIG. 12B. It is BB sectional drawing which shows the aspect which diverted two turning pulleys 90e, 90d, 90f, 90g, 90h and code | cord | chord CD in addition to FIG. 17A. FIG. 19A shows a modification of FIG. 18, FIG. 19A shows a mode in which the turning pulleys 90 d and 90 f are replaced with island-like turning members 91, and FIG. 19B shows the turning pulleys 90 d and 90 f in the first and second turning members 92, FIG. It is a top view which shows arrangement | positioning to the head box 101 which concerns on 1st Embodiment of this invention. It is the elements on larger scale of FIG. It is a top view which shows arrangement | positioning to the head box 101 which concerns on 2nd Embodiment of this invention. It is the elements on larger scale of FIG. It is a top view which shows arrangement | positioning to the head box 101 which concerns on 3rd Embodiment of this invention. It is the elements on larger scale of FIG. It is a top view which shows arrangement | positioning to the head box 101 which concerns on 4th Embodiment of this invention. It is the elements on larger scale of FIG. It is a perspective view which shows the positional relationship of five code | cord | chord CD which concerns on 4th Embodiment. It is a top view which shows arrangement | positioning to the head box 101 which concerns on the modification 1 of 1st Embodiment of this invention. It is a perspective view which shows the positional relationship of two code | cord | chord CD which concerns on the modification 1 of 1st Embodiment. It is a top view which shows arrangement | positioning to the head box 101 which concerns on the modification 2 of 1st Embodiment of this invention. It is a top view which shows arrangement | positioning to the head box 101 which concerns on the modification 1 of 2nd Embodiment of this invention. It is a top view which shows arrangement | positioning to the head box 101 which concerns on the modification 2 of 2nd Embodiment of this invention. It is a top view which shows arrangement | positioning to the head box 101 which concerns on the modification 1 of 3rd Embodiment of this invention. It is a top view which shows arrangement | positioning to the head box 101 which concerns on the modification 2 of 3rd Embodiment of this invention. It is a figure which shows the difference of the magnitude | size of the turning pulley provided in the front side of the attachment 200, and the turning pulley provided in a back side, FIG. 36A is a front view, FIG. 36B is a rear view. It is a front view of the pleat screen 100a (right side operation) which concerns on embodiment of this invention. It is sectional drawing which shows the aspect which has arrange | positioned the attachment 200 and the braking device 1000 to the head box 101 of the pleat screen 100a which concerns on embodiment of this invention. It is another sectional view showing a mode in which attachment 200 and braking device 1000 are arranged in head box 101 of pleat screen 100a concerning an embodiment of the present invention. 40A is a plan view of the pleated screen 100a according to the embodiment of the present invention, and FIG. 40B is a partially enlarged view of FIG. 40A. It is a side view of the pleated screen 100a which concerns on embodiment of this invention. It is a front view of the pleat screen 100b (left side operation) which concerns on embodiment of this invention. 43A is a plan view of the pleated screen 100b according to the embodiment of the present invention, and FIG. 43B is a partially enlarged view of FIG. 43A.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a braking device, an attachment, and a shielding device (for example, a pleated screen) using the braking device according to the invention will be described in detail with reference to the drawings.

1. Braking Device 1.1 Outline of Parts The braking device 1000 (speed adjusting device or brake unit) will be described with reference to FIGS. The braking device 1000 according to the present embodiment is a braking device that brakes the movement of the cord. Specifically, in the braking device 1000 according to the present embodiment, the mechanism relating to the motion conversion unit and the mechanism relating to the resistance applying unit are provided so as to be positioned substantially vertically. Here, in this embodiment, as shown in FIG. 1, an idle roller 40 including a slider 220, a coil spring SP, a shaft core 41 and a roller portion 42, a knurled 240, a pinion gear 50, a shaft core 31, and a washer 241. The internal toothed carrier 260 and the planetary gear 280 constitute a motion converting portion, and the weight 340, the sun geared weight holder 320, and the case 10A constitute a resistance applying portion.

  FIG. 1A is an exploded perspective view seen from the front upper side of the braking device 1000 according to the embodiment of the present invention, and FIG. 1B is an exploded perspective view seen from the rear upper side. The braking device 1000 includes an attachment roller 200, a case 10 </ b> A, a slider 220, a coil spring SP, a shaft core 41, an idle roller 40 including a roller portion 42, a knurling 240, a pinion gear 50, a knurling 240, and a shaft core 31 through which the pinion gear 50 is inserted. , Washer 241, internal toothed carrier 260, planetary gear 280, weight holder 320 with sun gear, weight 340, and base 70. The attachment 200 will be described again in the second section below.

  In the present embodiment, the idle roller 40 and the knurl 240 function as a sandwiching body that sandwiches the cord. Further, the idle roller 40 functions as a support, and the knurl 240 functions as a roller that rotates by movement of the cord in the longitudinal direction. The slider 220 holds the idle roller 40 and the knurl 240.

  As shown in FIG. 1, in this embodiment, four planetary gears 280 are provided in the internal toothed carrier 260, and eight weights 340 are held in the sun geared weight holder 320.

1.2 Assembly Configuration Next, the assembled state of these members will be described with reference to FIGS. FIG. 2A is a front perspective view of the braking device 1000 and shows an aspect with the attachment 200 attached, and FIG. 2B shows an aspect with the attachment 200 removed. FIG. 3A is a rear perspective view of the braking device 1000 and shows an aspect with an attachment 200 attached, and FIG. 3B shows an aspect with the attachment 200 removed. FIG. 4A is a left side view of the braking device 1000 and shows an aspect with an attachment 200 attached, and FIG. 4B shows an aspect with the attachment 200 removed. As shown in FIG. 4A, in the braking device 1000, the attachment 200 and the base 70 are visually recognized in a side view. It can also be seen that the protrusion 230 is supported by the support groove 114.

  Further, as shown in FIGS. 2B, 3B, and 4B, three cords CD are inserted into the braking device 1000. More specifically, it is shown that the code CD is led out from the slider 220 to both ends in the appearance of the braking device 1000. In particular, in this specification, the outlet for the cord CD provided on the rear side of the braking device 1000 is the one end 221 (see FIGS. 3B and 4B), and the outlet for the cord CD provided on the front side of the braking device 1000 is used. Note that it is referred to as the other end 222 (see FIGS. 2B and 4B). Further, the number of cords CD inserted through the braking device 1000 will be described in detail in the third and fourth sections.

  FIG. 5A is a plan view of the braking apparatus 1000 with the attachment 200 attached, and FIG. 5B shows the aspect with the attachment 200 removed. FIG. 6A is a bottom view of the braking apparatus 1000 and shows an aspect with an attachment 200 attached, and FIG. 6B shows an aspect with the attachment 200 removed. Here, as shown in FIG. 5B, the upper end of the shaft core 31 passes through the first top wall groove 16 provided in the case 10A and is exposed to the outside of the case 10A. Similarly, the upper end of the shaft core 41 passes through the second ceiling wall groove 17 provided in the case 10A and is exposed to the outside of the case 10A.

  Then, the first guide wall 16A provided at the edge of the first top wall groove 16 abuts the shaft core 31, and the second guide wall 17A provided at the edge of the second top wall groove 17 contacts the shaft core 41. It touches.

  Further, as shown in FIG. 6, the base 70 has a lower end of the shaft core 31 inserted through the first base groove 706 and a lower end of the shaft core 41 inserted through the second base groove 707 in the bottom view. It can be visually recognized. In addition, it is good also as a structure by which the lower end of the shaft core 31 and the shaft core 41 is covered from the exterior by covering the cylinder part 708 on the surface in which the attachment cylinder 702 is provided.

1.3 Internal Configuration A relative position between each member in the assembled state will be described in more detail with reference to FIGS. 7 is a cross-sectional view taken along the line P-P in FIG. 2C. As shown in FIG. 7, the pinion gear 50 centering on the shaft core 31 and the internal gear 261 provided on the internal toothed carrier 260 mesh with each other. The rotation of the internal gear 261 is configured to be transmitted to the planetary gear 280 via the support shaft 263 of the internal toothed carrier 260. The planetary gear 280 meshes with the sun gear 323 provided in the weight holder 320 with sun gear and the inner peripheral gear 115 provided in the case 10A. Therefore, when the rotation caused by the pinion gear 50 is applied, the planetary gear 280 can revolve in the space formed between the sun gear 323 and the inner peripheral gear 115 around the center of the inner gear 261. It becomes possible.

  8 is a cross-sectional view taken along the line QQ in FIG. 3A. As shown in FIG. 8, in the present embodiment, the cross-sectional view taken along the line QQ is substantially bilaterally symmetric with respect to the mounting cylinder 702. The shaft core 31 and the shaft core 41 protrude from the upper end of the case 10 </ b> A and the lower end of the base 70. Here, the upper ends of the first guide wall 16A and the second guide wall 17A are substantially the same height as the upper ends of the shaft core 31 and the shaft core 41, respectively.

  The knurling 240 and the roller portion 42 are located inside the slider 220. Further, the pinion gear 50 is located outside the slider 220 with the slider 220 sandwiched with the knurled 240. Further, the pinion gear 50 and the internal gear 261 are engaged with each other.

  And it is covered with the attachment 200 from the upper side of the case 10 </ b> A to the flange 13. The case 10A is engaged with the base 70 at the lower end thereof. A weight 340 is held on the upper portion of the base 70.

1.4 Operation Next, the operation of the braking apparatus 1000 according to the present embodiment will be described with reference to FIG. 9A shows a state in which no tension is applied to the cord CD (steady state), FIG. 9B shows a state in which the cord CD is tensioned, and the cord CD is sandwiched between the knurling 240 and the roller portion 42 (clipping state). FIG. 9C is a diagram summarizing the rotation direction of each member when the state changes from FIG. 9A to FIG. 9B. 9A and 9B are sectional views taken along the line PP in FIG. 2C, as in FIG. Here, for convenience of explanation, the outer periphery of the roller portion 42 that does not appear in the cross-sectional view is displayed around the shaft core 41 and the outer periphery of the knurl 240 is displayed so as to overlap the periphery of the shaft core 31. The outer periphery of the knurl 240 is not strictly a circle, but is illustrated as being approximate to a circle for simplicity of explanation.

  As shown in FIG. 9A, in the steady state, as described above, the coil spring SP abuts against the inner wall behind the case 10A and presses the slider 220 forward. Therefore, the slider 220 is positioned in front of the case 10A. Therefore, the position is regulated by the shaft 31 whose position is regulated by the first top wall groove 226 and the first bottom wall groove 228 of the slider 220, and the second top wall groove 227 and the second bottom wall groove 229. The shaft core 41 and the slider 220 move forward together. Furthermore, the distance between the first ceiling wall groove 16 and the second ceiling wall groove 17 provided in the case 10 </ b> A held on the upper portion of the slider 220 decreases toward the front. Similarly, the distance between the first base groove 706 and the second base groove 707 provided in the base 70 decreases toward the front. Accordingly, the distance between the roller portion 42 rotatably supported on the shaft core 41 and the knurled 240 rotatably supported on the shaft core 31 is also reduced. That is, the first ceiling wall groove 16 and the first base groove 706 function as a restriction groove that restricts the shaft 31 of the knurled 240 from being movably fitted and the knurled 240 not moving along the groove. Similarly, the 2nd ceiling wall groove | channel 17 and the 2nd base groove | channel 707 are the groove | channels which the shaft core 41 of the roller part 42 fits so that a movement is possible, and it is as a control groove which controls that the roller part 42 does not move along a groove | channel. Function. Further, since the first ceiling wall groove 16 and the first base groove 706 are formed concentrically with the center point of the inner peripheral surface of the inner toothed carrier 260 in plan view, the shaft core 31 moves in each groove. Even so, the pinion gear 50 can continue to mesh with the internal gear 261 provided on the internal toothed carrier 260.

  As described above, when the distance between the knurl 240 and the roller portion 42 becomes small, the knurl 240 is pressed by the roller portion 42, and the code CD is held between the knurl 240 and the roller portion 42. That is, in this embodiment, the coil spring SP also functions as a biasing member that constantly biases the knurled 240 so that the knurled 240 is pressed against the roller portion 42.

  Then, in the braking device 1000 in the steady state, it is assumed that a tension is applied to the cord CD in the direction of the arrow D1 (forward). Then, the knurling 240 rotates counterclockwise and the roller portion 42 rotates clockwise by the frictional force generated between the cord CD and the cord CD. Then, the rotation of the knurling 240 causes the pinion gear 50 fixed by sharing the same axis 31 to rotate (spin) in the same direction (counterclockwise) as the knurling 240. At this time, as shown in FIG. 9B, the shaft core 31 and the shaft core 41 move forward in a plan view and are close to each other in the left-right direction, and the pinching force of the cord CD by the knurl 240 and the roller portion 42 is strong. Thus, the knurl 240 is reliably rotated in accordance with the movement of the code CD. Then, since the pinion gear 50 meshes with the internal gear 261, the internal gear 261 rotates (rotates) counterclockwise by the force applied from the teeth of the pinion gear 50. As a result, the internal gear 261 and the internal toothed carrier 260 also rotate (revolve) counterclockwise, and the planetary gear 280 provided on the internal toothed carrier 260 likewise rotates (revolves) counterclockwise. Here, since the planetary gear 280 meshes with the sun gear 323 and the inner peripheral gear 115 fixed by the case 10A, the planetary gear 280 rotates counterclockwise while rotating in the opposite direction (clockwise) to the revolution direction. Will be. Therefore, the sun gear 323 that meshes with the planetary gear 280 inside the planetary gear 280 rotates (rotates) in the opposite direction (counterclockwise) to the rotation of the planetary gear 280. At this time, the rotation of the sun gear 323 is accelerated by the planetary gear 280. Thereby, the weight 340 held by the weight holder 320 with the sun gear rotating together with the sun gear 323 also starts to rotate. As already described, the inner peripheral gear 115 that meshes with the planetary gear 280 outside the planetary gear 280 does not rotate even when the planetary gear 280 rotates because the case 10A and the base 70 are fixed.

  As shown in FIG. 9B, when the knurl 240 and the roller portion 42 approach the limit (clamped state), the knurl 240 continues to rotate, but the movement along the internal gear 261 of the knurl 240 stops. At this time, the rotation of the other members due to the rotation of the knurl 240 is continued. Then, the weight 340 comes into contact with the inner peripheral wall of the case 10 </ b> A due to the centrifugal force, and a resistance force is generated against the rotation. That is, when the moving speed of the code CD is increased, the rotational speed is increased, thereby increasing the centrifugal force. As the centrifugal force increases, the weight 340 comes into stronger contact with the inner peripheral wall of the case 10A, and the resistance force increases. Thereby, the moving speed of the code CD (the falling speed of the solar radiation shielding member) can be suppressed. Here, when the tension applied to the cord CD is substantially constant (for example, when the solar radiation shielding member suspended so as to be lifted and lowered by the cord CD on the front side of the braking device 1000 falls freely), the tension is applied to the cord CD. The moving speed of the cord CD becomes substantially constant where the tension applied, the weight 340, and the resistance force by the inner peripheral wall of the case 10A balance. Therefore, the braking device 1000 functions as a rotary damper for the movement of the cord CD, and the solar radiation shielding member can be lowered slowly.

  FIG. 9C summarizes the rotation direction of each member (including the front-rear direction and the tightening direction in plan view) for the change in the clamping state from the steady state to the clamping state described above. It is.

  On the other hand, when tension is applied to the cord CD in the direction opposite to the arrow D1 (backward), the knurl 240 and the roller portion 42 rotate in the direction opposite to the above. As a result, the shaft core 31 and the shaft core 41 move along the first top wall groove 16 and the second top wall groove 17 so as to be separated from each other. Then, the clamping force of the knurl 240 to the cord CD is weakened, and the cord CD can be pulled with a weak force. Accordingly, when the braking device 1000 is provided in the head box, the direction in which the tension is applied to the cord CD in the front direction in FIG. 9 is the direction in which the solar radiation shielding member is lowered, and the direction in which the tension is applied to the cord CD in the rear direction. It is preferable that the direction of rise is.

  As described above, in the braking device 1000 according to the present embodiment, the cord sandwiches the cord when the cord and the sandwich body relatively move in one direction, and the cord does not bend when the cord and the sandwich body relatively move in the other direction. It can be said that the clamping device is configured such that the clamping state is changed so as to be released in the state. Here, the release of the cord means a state in which the movement of the cord is permitted, and it does not matter whether the cord and the sandwiched body are in contact or non-contact.

2. Attachment Next, the attachment 200 comprised so that attachment to the braking device 1000 is demonstrated using FIGS. 10-19. In addition, although demonstrated as the attachment 200, the brake device 1000 itself may also contain the characteristic which concerns on the attachment 200 mentioned later (namely, the attachment 200 and the brake device 1000 may be integrated instead of separate bodies). FIG. 10 is a perspective view of the attachment 200. FIG. 11A is a plan view of the attachment 200 according to the embodiment of the present invention, and FIG. 11B is a bottom view of the attachment 200 according to the embodiment of the present invention. FIG. 12A is a front view of the attachment 200 according to the embodiment of the present invention, and FIG. 12B is a rear view of the attachment 200 according to the embodiment of the present invention. FIG. 13A is a left side view of the attachment 200 according to the embodiment of the present invention, and FIG. 13B is a right side view of the attachment 200 according to the embodiment of the present invention. 14 to 19 are various cross-sectional views of the attachment 200.

  As shown in FIG. 10 and the like, the attachment 200 has a substantially rectangular parallelepiped shape as a whole, and the above-described braking device 1000 is accommodated in an internal space 200s inside the attachment 200. In this embodiment, the attachment 200 is substantially bilaterally symmetric both in appearance and interior. Refer to FIG. 11 (the top view and bottom view of the attachment 200), for example about the symmetry regarding an external appearance. Refer to FIG. 17 (cross-sectional view of the attachment 200), for example, regarding the symmetry related to the interior. Further, the attachment 200 is configured to be surrounded by a canopy 3t, a bottom 3b, a left side wall 41, a right side wall 4r, a front surface 5f, and a back surface 5r.

  The canopy 3t is provided with pulley arrangement holes 2ta to 2tg. Referring to FIGS. 10 and 11A, pulley arrangement holes 2ta to 2tf are illustrated on the front side, and pulley arrangement holes 2tg and 2th are illustrated on the rear side. Further, the canopy 3t is provided with locking portions 8fl, 8fr, 8rl, 8rr, whereby the attachment 200 is locked when placed on the head box in the shielding device (details are described in Section 4). Explained as a device). Moreover, since it is supported by the head box via the four locking portions 8fl, 8fr, 8rl, and 8rr as described above, it is possible to suppress an overload on the braking device 1000.

  As shown in FIG. 13, the bottom portion 3b is composed of bottom portions 3bf, 3bc, and 3br in order from the front to the rear. The bottom portions 3bf and 3br are surfaces that come into contact with the head box when arranged in the head box of the shielding device. A step is provided between the bottom 3bc and the bottom 3bf, 3br, and the bottom 3bc is positioned higher than the bottom 3bf, 3br. Moreover, pulley arrangement | positioning holes 2ba-2bf are provided in bottom part 3bf, and pulley arrangement | positioning holes 2bg and 2bh are each provided in bottom part 3bc.

  The pulley arrangement holes 2ta and 2ba are provided at positions facing each other in the canopy 3t and the bottom 3b (hereinafter referred to as a pair of pulley arrangement holes). Similarly, the pair of pulley arrangement holes 2tb and 2bb are provided at positions facing each other in the canopy 3t and the bottom 3b, and the pair of pulley arrangement holes 2tc and 2bc are arranged at positions opposed to each other in the canopy 3t and the bottom 3b. Provided. The same applies to the other pair of pulley arrangement holes. The pulley arrangement holes 2ta, 2tc, 2td, and 2tf are provided on a straight line in the left-right direction. The pulley arrangement hole 2tb is located at a position shifted forward from the approximate center between the pulley arrangement holes 2ta and 2tc. The pulley arrangement hole 2te is located at a position shifted forward from the approximate center between the pulley arrangement holes 2td and 2tf. That is, the pulley arrangement holes 2tb and 2te are provided on a straight line in the left-right direction. The pulley arrangement holes 2tg and 2th are also provided on a straight line in the left-right direction. Of course, the same applies to the pulley arrangement holes 2ba to 2bg related to the bottom 3b.

  By passing the pulley shaft through the pair of pulley arrangement holes, the turning pulley is provided in the internal space 200 s of the attachment 200. For example, FIG. 18 shows an aspect in which turning sheaves 90a, 90d, 90f, 90g, and 90h are arranged in the BB cross section shown in FIG. 17A. The code CD is turned in the other direction by passing through these turning pulleys. That is, the turning pulley functions as a turning member for the cord CD, and is not limited to the pulley as long as it is a member that turns the extending direction of the cord CD. For example, as shown in FIG. 19A, instead of the turning pulleys 90d and 90f shown in FIG. 18, one turning member 91 protruding in an island shape may be employed. Alternatively, as shown in FIG. 19B, instead of the turning pulleys 90d and 90f shown in FIG. 18, protruding first and second turning members 92 and 93 may be employed. Here, an example of changing the turning pulleys 90d and 90f is taken as an example, but the same applies to other turning pulleys. Moreover, the structure integrated with the attachment 200 and the braking device 1000 may be sufficient instead of the structure which can attach or detach a turning member.

  36A and 36B, a distance between a pair of pulley arrangement holes provided at the front (for example, a pair of pulley arrangement holes 2ta and 2ba) and a pair of pulley arrangement holes provided at the rear. Since the distance between them (for example, the pair of pulley arrangement holes 2tg and 2bg) is different, the height h1 of the turning pulleys provided at the front (for example, turning pulleys 90a, 90d and 90f in FIG. 36A) is the turning provided at the rear. Note that the height of the pulley (eg, turning pulleys 90g, 90h in FIG. 36B) is greater than the height h2. When the attachment 200 is desired to be miniaturized, it is assumed that the height h1 of the turning pulley provided at the front is made smaller as the height h2 of the turning pulley provided at the rear. However, as shown in FIG. 36B, since the turning pulley provided at the rear is short, the code CD located at the lowermost side among the three passing through the braking device 1000 is located below the turning pulley. It becomes. For this reason, about the front, it is comprised so that three code | cord | chord CD may contact a turning pulley as h1> h2.

  The bottom 3b is provided with a mounting cylinder 8b used when the attachment 200 is disposed in the head box of the shielding device. For example, the attachment 200 can be stably disposed in the head box by fitting the attachment cylinder 8b into a member such as a shaft provided in the head box.

  As shown in FIG. 13, the left side wall portion 4l and the right side wall portion 4r are configured to have a shape obtained by cutting a part (rectangle) from a rectangle in plan view. Further, as shown in FIG. 11, the left side wall part 4l and the right side wall part 4r are respectively opposed to the left inner wall 4il and the right inner wall 4ir located inside the attachment 200. A space between the left side wall portion 4l and the left inner wall 4il is a left cord bypass route 7l. A space sandwiched between the right wall 4r and the right inner wall 4ir is a right cord bypass 7r. By using the left cord detour 7l and the right cord detour 7r (also referred to as cord detours 7l and 7r), at least one of the plural codes CD can be detoured without being inserted into the braking device 1000. That is, by extending the non-inserted code CD along the code bypass circuits 7l and 7r (bypassing the braking device 1000), it is possible to appropriately adjust the braking force applied to the code CD. For example, FIG. 18 shows a mode in which two code CDs are inserted into the code bypass circuits 7l and 7r (that is, bypassed). It should be noted that the cord detours 7l and 7r are provided on both sides of the roller portion 42 and the knurling 240 (cord capturing portion) in the braking device 1000.

  Further, as shown in FIG. 11, the left inner wall 4il and the right inner wall 4ir are provided with claw portions 8al and 8ar, respectively. It is used when the braking device 1000 is installed and integrated in the internal space 200s. At the time of installation, the claw portions 8al and 8ar engage with the engagement holes 19 (see FIGS. 3B and 4B) of the case 10A. . Thereby, the case 10A enters while the left inner wall 4il and the right inner wall 4ir are elastically deformed outward, the claw portions 8al and 8ar provided in the attachment 200, and the two engagement holes 19 provided on the left and right of the case 10A. Can be elastically engaged (so-called snap-fit mechanism).

  As shown in FIG. 12A, the front surface portion 5f is formed in a hollow rectangular shape in plan view. As shown in FIG. 12B, the back surface portion 5r is configured in a hollow rectangular shape in plan view. Moreover, the partition part 5ra is provided so that it may cross | intersect right and left in the approximate center, and the partition part 5rb is provided in the U-shape above it. The partitions 5ra and 5rb divide the opening (cord entrance) of the back surface 5b from the openings 6a, 6b, and 6c, respectively, and three cords CD pass through each of these to the brake unit. . When there are three or more code CDs, regardless of whether or not a part of the code CD is bypassed, the code 200 is introduced into the braking device 1000 in a state in which the three code CDs are aligned vertically. It becomes.

3. Arrangement in the Head Box Here, the arrangement when the braking device 1000 and the attachment 200 described above are installed in the head box in a predetermined shielding device will be considered. Here, a pleated screen is illustrated as the shielding device. Since products of various sizes are assumed for the pleated screen, the number of lifting cords (code CDs) varies depending on the product. Particularly preferably, a product with 2 to 5 code CDs is envisaged. Therefore, the arrangement of the braking device 1000 and the attachment 200 in the head box 101 will be described separately for each number of code CDs.

3.1 First Embodiment <Number of Codes: 2>
20 is a plan view showing the arrangement of the head box 101 according to the first embodiment of the present invention, and FIG. 21 is a partially enlarged view thereof. As shown in FIG. 20, the head box 101 according to the first embodiment includes a gear box 76 and a stopper 77 (self-weight drop prevention device) from the rear (right) to the front (left) along the longitudinal direction. The braking device 1000 and the attachment 200, the first support member 71, and the second support member 72 are disposed. Two cords CD extend in the head box 101.

  The first and second support members 71 and 72 are arranged corresponding to two cords CD (here, lift cords CD1 and CD2). Further, at the position corresponding to each support member of the head box 101, there is provided a cord other end outlet 85 for leading the other end of the cord CD (an end portion on the side supporting the bottom rail) from the head box 101. ing. One end of the lifting / lowering cords CD1 and CD2 related to the first and second support members 71 and 72 is guided to the stopper 77 via the braking device 1000 ("the other end port 222" to "the one end port 221"). The lifting / lowering cord CD1 guided from the first support member 71 is guided to the stopper 77 through the braking device 1000 after its extending direction is slightly turned by the turning pulley 90b provided in front of the attachment 200.

  Here, when the direction of the lifting / lowering cord CD1 is viewed in reverse, the cord other end outlet 85 in the first support member 71 is located at a position farther from the center in the short direction of the head box 101 than the other end port 222 of the braking device 1000. Since it is provided, the lifting / lowering cord CD1 led out from the other end 222 is turned by a turning pulley 79b (turning member) in a direction away from the center of the short direction of the head box 101.

  Further, the lifting code CD2 guided from the second support member 72 is guided to the stopper 77 through the braking device 1000 after passing through the first support member 71. The turning pulley 90b is arranged by inserting a shaft into a pair of pulley arrangement holes 2tb and 2bb (see FIGS. 17A and 21) in the attachment 200. Of course, the use of the turning pulley 90b in the embodiment is merely an example. For example, the turning pulley 90a disposed by inserting a shaft through the pair of pulley arrangement holes 2ta and 2ba may be adopted.

  Thereafter, the stopper 77 passes through the gear box 76 and exits from the cord one end outlet 86 to the outside of the head box 101, and the elevating cords CD1 and CD2 are suspended as operation cords (not shown).

  On the other hand, the other ends of the lifting / lowering cords CD1 and CD2 related to the first and second support members 71 and 72 are respectively connected to the head box 101 from the respective cord other end outlets 85 through the first and second support members 71 and 72, respectively. Derived and attached to a bottom rail (not shown) located in the direction directly below the head box 101. Turning pulleys 81 and 82 are pivotally supported by the first and second support members 71 and 72, and a cord CD extending along the longitudinal direction (front-rear direction) of the head box 101 is extended from the front-rear direction of the head box 101 to the top-to-bottom direction. It is possible to guide turning in the (paper surface direction).

  By the way, when the operator pulls the operation code (elevation code CD1, CD2) (that is, when the screen described later is raised), the elevating code CD1, CD2 is directed from the other end port 222 of the braking device 1000 toward the one end port 221. Moving. At this time, the turning pulley 90b rotates counterclockwise as the lifting / lowering cord CD1 moves. On the other hand, when moving in the opposite direction (that is, when lowering the screen described later), the lifting / lowering cords CD1 and CD2 move from the one end 221 to the other end 222 of the braking device 1000. At this time, the turning pulley 90b rotates clockwise with the movement of the lifting / lowering cord CD1.

3.2 Second Embodiment <Number of Codes: 3>
FIG. 22 is a plan view showing an arrangement in the head box 101 according to the second embodiment of the present invention, and FIG. 23 is a partially enlarged view thereof. As shown in FIG. 22, the head box 101 according to the second embodiment includes a gear box 76, a stopper 77, a braking device 1000, and an attachment from the rear (right) to the front (left) along the longitudinal direction. 200, the 1st support member 71, the 2nd support member 72, and the 3rd support member 73 are arrange | positioned. In addition, three elevating cords CD <b> 1 to CD <b> 3 extend in the head box 101.

  Compared to the first embodiment, the arrangement of the head box 101 according to the second embodiment includes three lift codes CD by adding a third support member 73 following the first and second support members 71 and 72. However, the same arrangement is adopted as the pulley arrangement of the attachment 200. That is, also in the second embodiment, the attachment 200 is provided with a turning pulley 90b in which a shaft is inserted into a pair of pulley arrangement holes 2tb and 2bb (see FIGS. 17A and 23). Of course, the use of the turning pulley 90b in the embodiment is merely an example. For example, the turning pulley 90a disposed by inserting a shaft through the pair of pulley arrangement holes 2ta and 2ba may be adopted. Further, the lifting / lowering cord CD3 guided from the third support member 73 is guided to the stopper 77 through the braking device 1000 after passing through the second support member 72 and the first support member 71.

  Thereafter, the stopper 77 passes through the gear box 76, exits from the cord one end outlet 86 to the head box 101, and the elevating cords CD1 to CD3 are suspended as operation cords (not shown).

  By the way, when the operator pulls the operation cord (elevating cords CD1 to CD3) (that is, when raising the screen described later), the elevating cords CD1 to CD3 are directed from the other end 222 of the braking device 1000 toward the one end 221. Moving. At this time, the turning pulley 90b rotates counterclockwise as the lifting / lowering cord CD1 moves. On the other hand, when moving in the opposite direction (that is, when lowering a screen to be described later), the lifting / lowering codes CD1 to CD3 move from one end 221 to the other end 222 of the braking device 1000. At this time, the turning pulley 90b rotates clockwise with the movement of the lifting / lowering cord CD1.

3.3 Third Embodiment <Number of Codes: 4>
FIG. 24 is a plan view showing an arrangement in the head box 101 according to the third embodiment of the present invention, and FIG. 25 is a partially enlarged view thereof. As shown in FIG. 24, the head box 101 according to the third embodiment includes a gear box 76, a stopper 77, a braking device 1000, and an attachment from the rear (right) to the front (left) along the longitudinal direction. 200, the 1st support member 71, the 2nd support member 72, the 3rd support member 73, and the 4th support member 74 are arrange | positioned. Further, four lift cords CD1 to CD4 extend into the head box 101.

  The 1st-4th support members 71-74 are arrange | positioned corresponding to the four raising / lowering cords CD1-CD4. Further, at the position corresponding to each support member of the head box 101, there is provided a cord other end outlet 85 for leading the other end of the cord CD (an end portion on the side supporting the bottom rail) from the head box 101. ing. One end of the lifting / lowering cords CD1 and CD4 related to the first and fourth support members 71 and 74 is guided to the stopper 77 via the braking device 1000 ("the other end port 222" to "the one end port 221"). Specifically, the lifting / lowering cord CD1 is guided to the stopper 77 through the braking device 1000 after its extending direction is slightly turned by the turning pulley 90c provided in front of the attachment 200. Further, the lifting code CD4 is guided to the stopper 77 through the braking device 1000 after passing through the third support member 73, the second support member 72, and the first support member 71.

  On the other hand, one end of the lifting / lowering cords CD2 and CD3 related to the second and third support members 72 and 73 is inserted through the left cord bypass route 7l and the right cord bypass route 7r in the attachment 200 without passing through the braking device 1000, respectively. To the stopper 77. Specifically, the lifting / lowering cord CD2 is provided behind the attachment 200 after passing through the left cord bypass circuit 7l after its extending direction is slightly turned by a turning pulley 90a provided in front of the attachment 200. The extending direction is further turned by the turning pulley 90g and finally guided to the stopper 77 via the turning pulley 97 provided at the end of the stopper 77. More specifically, the lifting cords CD1 and CD4 inserted into the braking device 1000 and the lifting cords CD2 and CD3 not inserted into the braking device 1000 are both rectified before the stopper 77 and guided to the stopper 77. The The turning pulley 97 is not limited to a pulley, and a turning member such as a guide wall may be employed, for example. The elevator cord CD3 is passed by the turning pulley 90h provided at the rear of the attachment 200 after passing through the right cord detour 7r after its extending direction is slightly turned by the turning pulley 90f provided at the front of the attachment 200. The extending direction is further turned and finally guided to the stopper 77 via a turning pulley 98 provided at the end of the stopper 77.

  Thereafter, the stopper 77 passes through the gear box 76 and exits from the cord one end outlet 86 to the head box 101, and the elevating cords CD1 to CD4 are suspended as operation cords (not shown).

  Here, when the direction of the lifting / lowering cords CD2 and CD3 is viewed in reverse, the lifting / lowering cords CD2 and CD3 detour through a position farther from the center in the short direction of the head box 101 than the other end port 222 of the braking device 1000. Later, it is characterized in that it is turned toward the center in the short direction of the head box 101 by turning pulleys 90a, 90f (turning members). Furthermore, the cord other end outlet 85 in the third support member 73 is provided at a position farther from the center in the short direction of the head box 101 than the other end opening 222 of the braking device 1000, and is led out from the other end opening 222. The lifting / lowering code CD3 is turned by the first support member 72 in a direction away from the center in the short direction of the head box 101.

  The turning pulley 90a is arranged by inserting a shaft through a pair of pulley arrangement holes 2ta and 2ba (see FIGS. 17A and 25) at the rear of the attachment 200. The turning pulley 90c is arranged by inserting a shaft through a pair of pulley arrangement holes 2tc and 2bc (see FIGS. 17A and 25) behind the attachment 200. The turning pulley 90f is arranged by inserting a shaft through a pair of pulley arrangement holes 2tf and 2bf (see FIGS. 17A and 25) behind the attachment 200. The turning pulley 90g is arranged by inserting a shaft through a pair of pulley arrangement holes 2tg and 2bg (see FIGS. 17A and 25) in front of the attachment 200. The turning pulley 90h is arranged by inserting a shaft through a pair of pulley arrangement holes 2th and 2bh (see FIGS. 17A and 25) in front of the attachment 200.

  Here, in particular, the lifting / lowering cord CD inserted into the braking device 1000 is a lifting / lowering cord CD (here, the first and fourth support members 71 and 74) guided by the support members (here, the first and fourth support members 71 and 74) located on both ends of the head box 101. Note that the lift codes CD1, CD4). By inserting only the lifting / lowering cord CD on both ends into the braking device 1000 in this way, the braking force applied to the cord CD is equally applied to the left and right, and the head box in the shielding device can be prevented from tilting.

  By the way, when the operator pulls the operation cords (elevating codes CD1 to CD4) (that is, when raising the screen described later), the elevating codes CD1 to CD4 are directed from the other end port 222 of the braking device 1000 toward the one end port 221. It moves (however, the lift codes CD2 and CD3 are not inserted through the braking device 1000). At this time, the turning pulley 90a rotates clockwise with the movement of the lifting / lowering cord CD2. The turning pulley 90c rotates counterclockwise as the elevating cords CD1 and CD4 move. The turning pulley 90f rotates counterclockwise as the lifting / lowering cord CD3 moves. The turning pulley 90g rotates clockwise as the lifting / lowering cord CD2 moves. The turning pulley 90h rotates counterclockwise as the lifting / lowering cord CD3 moves. On the other hand, when moving in the opposite direction (that is, when lowering a screen described later), the lifting / lowering cords CD1 to CD4 move from the one end 221 to the other end 222 of the braking device 1000. At this time, the turning pulley 90a rotates counterclockwise with the movement of the lifting / lowering cord CD2. The turning pulley 90c rotates clockwise with the movement of the lifting / lowering cords CD1 and CD4. The turning pulley 90f rotates clockwise along with the movement of the lifting / lowering cord CD3. The turning pulley 90g rotates counterclockwise as the lifting / lowering cord CD2 moves. The turning pulley 90h rotates clockwise with the movement of the lifting / lowering cord CD3. That is, the turning pulleys 90a and 90g rotate in a predetermined direction, and the turning pulleys 90c, 90f and 90 rotate in the direction opposite to the predetermined direction.

3.4 Fourth Embodiment <Number of Codes: 5>
FIG. 26 is a plan view showing the arrangement of the head box 101 according to the fourth embodiment of the present invention, and FIG. 27 is a partially enlarged view thereof. As shown in FIG. 26, the head box 101 according to the fourth embodiment includes a gear box 76, a stopper 77, a braking device 1000, and an attachment from the rear (right) to the front (left) along the longitudinal direction. 200, the 1st support member 71, the 2nd support member 72, the 3rd support member 73, the 4th support member 74, and the 5th support member 75 are arrange | positioned. Further, five lift cords CD <b> 1 to CD <b> 5 extend in the head box 101.

  Compared with the third embodiment, the arrangement of the head box 101 according to the fourth embodiment includes five lift cords CD by adding a fifth support member 75 following the first to fourth support members 71 to 74. However, the same arrangement is adopted as the pulley arrangement of the attachment 200. That is, also in the fourth embodiment, the attachment 200 has a turning pulley 90a and a pair of pulley arrangement holes 2tc each having a shaft inserted into a pair of pulley arrangement holes 2ta and 2ba (see FIGS. 17A and 27) on the rear side. A turning pulley 90c having a shaft inserted into 2bc (see FIGS. 17A and 27) and a turning pulley 90f having a shaft inserted into a pair of pulley arrangement holes 2tf and 2bf (see FIGS. 17A and 27) are arranged. Established. Further, a turning pulley 90g having a shaft inserted in a pair of pulley arrangement holes 2tg and 2bg (see FIGS. 17A and 27) and a pair of pulley arrangement holes 2th and 2bh (see FIGS. 17A and 27) in front thereof. A turning pulley 90h is inserted.

  On the other hand, the fourth embodiment is different in that the cord CD3 that has not been inserted into the braking device 1000 is inserted into the braking device 1000. That is, the lifting / lowering cord CD3 guided from the third support member 73 passes through the second support member 72 and the first support member 71 and is guided to the stopper 77 through the braking device 1000. In addition, the lifting / lowering cord CD5 guided from the fifth support member 75 passes through the fourth support member 74, the third support member 73, the second support member 72, and the first support member 71, and then passes through the braking device 1000 to stop. 77.

  After that, the stopper 77 passes through the gear box 76 and exits the head box 101 from the cord one end outlet 86, and the elevating cords CD1 to CD5 are suspended as operation cords (not shown).

  Here, in particular, among the five lift cords CD, the lift cord CD (here, the lift cords CD1, CD3, CD5) that passes through the braking device 1000 and the lift cord CD (here, the lift code) that passes through the cord detours 7l and 7r. Note that the codes CD2, CD4) are arranged alternately in the longitudinal direction of the headbox 101. By alternately arranging the lifting / lowering cord CD inserted into the braking device 1000 and the lifting / lowering cord CD that is not inserted in this manner, the braking force is applied evenly as the entire cord CD, and the head box in the shielding device is inclined. Can be suppressed.

  Here, the positional relationship between the lifting codes CD1 to CD5 will be described with reference to FIGS. 27, 28, and 36. FIG. As shown in FIG. 28, lift cords CD1, CD3, CD5 are led out from the other end 222 of the cord in order from the bottom to the top. However, the present invention is not limited to this example, and the order is not limited as long as the codes that pass through the braking device 1000 are these codes. In addition, a mode is shown in which the lifting / lowering cord CD2 that passes through the right cord bypass route 7r and the lifting / lowering cord CD4 that passes through the left cord bypass route 7l are derived. Incidentally, as shown in FIGS. 27 and 28, it should be noted that the elevating cords CD <b> 1 and CD <b> 2 cross each other in front of the attachment 200. Here, the lifting / lowering cord CD2 inserted through the braking device 1000 extends above the lifting / lowering cord CD1 that is not inserted through the braking device 1000. However, the present invention is not limited to this example. It may extend above the code CD2. Further, the lifting cords CD1 and CD2 may be in contact with each other at the time of intersection, but preferably are not in contact with each other as shown in FIG. By being non-contact, the frictional resistance due to the contact is suppressed, and the operability of the shielding device (pleat screen) is further improved. Also, as shown in FIG. 36B, in the cord one end 221, the lifting / lowering cord CD1 is led out from the opening 6a, CD3 from the opening 6b, and CD5 from the opening 6c in order from the bottom. However, the present invention is not limited to this example, and the order is not limited as long as the codes that pass through the braking device 1000 are these codes. In addition, a mode is shown in which the lifting / lowering cord CD2 that passes through the right cord bypass route 7r and the lifting / lowering cord CD4 that passes through the left cord bypass route 7l are derived.

  By the way, when the operator pulls the operation cords (elevating cords CD1 to CD5) (that is, when raising the screen described later), the elevating cords CD1 to CD5 are directed from the other end port 222 of the braking device 1000 toward the one end port 221. It moves (however, the lifting / lowering codes CD2 and CD4 are not inserted through the braking device 1000). At this time, the turning pulley 90a rotates clockwise with the movement of the lifting / lowering cord CD2. The turning pulley 90c rotates counterclockwise as the lifting / lowering cords CD1, CD3, CD5 move. The turning pulley 90f rotates counterclockwise as the lifting / lowering cord CD4 moves. The turning pulley 90g rotates clockwise as the lifting / lowering cord CD2 moves. The turning pulley 90h rotates counterclockwise as the lifting / lowering cord CD4 moves. On the other hand, when moving in the opposite direction (that is, when lowering a screen to be described later), the lifting / lowering cords CD1 to CD5 move from one end 221 to the other end 222 of the braking device 1000. At this time, the turning pulley 90a rotates counterclockwise with the movement of the lifting / lowering cord CD2. The turning pulley 90c rotates clockwise with the movement of the lifting / lowering codes CD1, CD3, CD5. The turning pulley 90f rotates clockwise with the movement of the lifting / lowering cord CD4. The turning pulley 90g rotates counterclockwise as the lifting / lowering cord CD2 moves. The turning pulley 90h rotates clockwise with the movement of the lifting / lowering cord CD4. That is, the turning pulleys 90a and 90g rotate in a predetermined direction, and the turning pulleys 90c, 90f and 90 rotate in the direction opposite to the predetermined direction.

4). Modified Example Next, a modified example will be described below with respect to the arrangement mode on the head box 101 described in the previous section.
4.1 Modification of First Embodiment 4.1.1 Modification 1 of First Embodiment
FIG. 29 is a plan view showing an arrangement in the head box 101 according to the first modification of the first embodiment of the present invention. As shown in FIG. 29, the head box 101 according to the first modification of the first embodiment includes a gear box 76 (cord one end outlet 86) from the rear (right) to the front (left) along the longitudinal direction. A first support member 71, a stopper 77, a braking device 1000 and an attachment 200, and a second support member 72 are disposed. Two cords CD extend in the head box 101.

  The arrangement mode of the head box 101 according to the first modification of the first embodiment is different from that of the first embodiment in the arrangement positions of various members (particularly, the first support member 71 is engaged with the gear box 76 (the cord one end outlet 86) and braking. The same arrangement is employed for the pulley arrangement of the attachment 200. That is, also in Modification 1 of the first embodiment, the attachment 200 is provided with a turning pulley 90b in which a shaft is inserted into a pair of pulley arrangement holes 2tb and 2bb (see FIGS. 17A and 29).

  The first and second support members 71 and 72 are arranged corresponding to two cords CD (here, lift cords CD1 and CD2). Further, at the position corresponding to each support member of the head box 101, there is provided a cord other end outlet 85 for leading the other end of the cord CD (an end portion on the side supporting the bottom rail) from the head box 101. ing. One end of the lifting / lowering cords CD1 and CD2 related to the first and second support members 71 and 72 is guided to the stopper 77 via the braking device 1000 ("the other end port 222" to "the one end port 221"). In particular, since the other end port 222 of the braking device 1000 faces the direction of the second support member 72, the lift code CD1 guided from the first support member 71 is provided in front of the attachment 200, unlike the lift code CD2. The extension pulley 90b is turned in the extending direction and then guided to the stopper 77 through the braking device 1000.

  Thereafter, the stopper 77 passes through the gear box 76 and exits from the cord one end outlet 86 to the outside of the head box 101, and the elevating cords CD1 and CD2 are suspended as operation cords (not shown).

  If the direction of the lifting / lowering cord CD is reversed, the braking device 1000 is disposed between the first and second support members 71 and 72 (preferably in the middle), so that the first and second support members from the braking device 1000 are arranged. The elevating cords CD1 and CD2 extending toward 71 and 72 are characterized by being in mutually different (opposite) directions. Such different directions are directions in which the force acting on the braking device 1000 is canceled (the vector sum of the forces is ideally 0). Refer to FIG. 30 for the positional relationship between the lifting codes CD1 and CD2. As shown in FIG. 30, elevating cords CD1 and CD2 are led out from the cord other end port 222 in order from the bottom to the top. However, the present invention is not limited to this example, and the order is not limited as long as the codes that pass through the braking device 1000 are these codes.

  By the way, when the operator pulls the operation code (elevation code CD1, CD2) (that is, when the screen described later is raised), the elevating code CD1, CD2 is directed from the other end port 222 of the braking device 1000 toward the one end port 221. Moving. At this time, the turning pulley 90b rotates counterclockwise as the lifting / lowering cords CD1 and CD2 move. On the other hand, when moving in the opposite direction (that is, when lowering the screen described later), the lifting / lowering cords CD1 and CD2 move from the one end 221 to the other end 222 of the braking device 1000. At this time, the turning pulley 90b rotates clockwise with the movement of the lifting / lowering cords CD1 and CD2.

4.1.2 Modification 2 of the first embodiment
FIG. 31 is a plan view showing an arrangement in the head box 101 according to the second modification of the first embodiment of the present invention. Incidentally, the first modification of the first embodiment described above is characterized in that the lifting cords CD1 and CD2 extending from the braking device 1000 toward the first and second support members 71 and 72 are in opposite directions. To do. Although it has the characteristic also in the modification 2 of 1st Embodiment, it should be noted that the braking device 1000 is rotated 90 degrees from the direction of the braking device according to the first embodiment.

  That is, the insertion direction of the lifting / lowering cords CD1 and CD2 with respect to the braking device 1000 in the first modification of the first embodiment is the longitudinal direction of the head box 101, whereas in the second modification of the first embodiment, the braking device The insertion direction of the lifting / lowering cords CD1 and CD2 with respect to 1000 is in the short direction of the head box 101. In other words, the other end 222 of the braking device 1000 is directed in the short direction of the head box 101. The lifting / lowering cords CD1 and CD2 derived from the braking device 1000 have first and second supports that are in opposite directions after the extending direction is turned in the longitudinal direction of the head box 101 via turning pulleys 90b and 90e. It extends toward the members 71, 72. On the other hand, the lifting / lowering cords CD1 and CD2 led out from the other end port 222 of the braking device 1000 are arranged in the longitudinal direction of the head box 101 by a guide pulley 96 (here, guide pulleys 96a to 96c) provided at least one end of the other end port 222. And is guided to the stopper 77. The turning pulley 90b is arranged by inserting a shaft through a pair of pulley arrangement holes 2tb and 2bb (see FIGS. 17A and 31) in the attachment 200, and the turning pulley 90e is a pair of pulleys in the attachment 200. It arrange | positions by the axis | shaft being penetrated by pulley arrangement | positioning hole 2te, 2be (refer FIG. 17A and FIG. 31).

  By the way, when the operator pulls the operation code (elevation code CD1, CD2) (that is, when the screen described later is raised), the elevating code CD1, CD2 is directed from the other end port 222 of the braking device 1000 toward the one end port 221. Moving. At this time, the turning pulley 90b rotates counterclockwise as the lifting / lowering cord CD1 moves. The turning pulley 90e rotates clockwise along with the movement of the lifting / lowering cord CD2. On the other hand, when moving in the opposite direction (that is, when lowering the screen described later), the lifting / lowering cords CD1 and CD2 move from the one end 221 to the other end 222 of the braking device 1000. At this time, the turning pulley 90b rotates clockwise with the movement of the lifting / lowering cord CD1. The turning pulley 90e rotates counterclockwise as the lifting / lowering cord CD2 moves. That is, the turning pulley 90b rotates in a predetermined direction, and the turning pulley 90e rotates in the direction opposite to the predetermined direction.

4.2 Modification Example of Second Embodiment 4.2.1 Modification Example 1 of Second Embodiment
FIG. 32 is a plan view showing an arrangement in the head box 101 according to the first modification of the second embodiment of the present invention. As shown in FIG. 32, the head box 101 according to the first modification of the second embodiment includes a gear box 76 and a first support member from the rear (right) to the front (left) along the longitudinal direction. 71, a stopper 77, a braking device 1000 and an attachment 200, a second support member 72, and a third support member 73 are disposed. Three code CDs extend in the head box 101.

  Although the arrangement | positioning aspect to the head box 101 which concerns on the modification 1 of 2nd Embodiment differs in the arrangement position of various members (especially position of the 1st support member 71) compared with 2nd Embodiment, the pulley arrangement | positioning of the attachment 200 is carried out. The same arrangement is adopted for. That is, also in the modification 1 of 2nd Embodiment, the turning pulley 90b by which a shaft is penetrated by a pair of pulley arrangement | positioning hole 2tb, 2bb (refer FIG. 17A and FIG. 32) is arrange | positioned at the attachment 200. FIG. Further, the second embodiment is similar to the second modification of the first embodiment, and the insertion direction of the three cords CD (elevating cords CD1 to CD3) with respect to the braking device 1000 is in the short direction of the head box 101. To do.

  The first to third support members 71 to 73 are disposed corresponding to the lifting codes CD1 to CD3. Further, at the position corresponding to each support member of the head box 101, there is provided a cord other end outlet 85 for leading the other end of the cord CD (an end portion on the side supporting the bottom rail) from the head box 101. ing. The lifting / lowering cord CD1 and the lifting / lowering cords CD2 and CD3 derived from the braking device 1000 are in directions opposite to each other after their extending directions are turned in the longitudinal direction of the head box 101 through turning pulleys 90b and 90e. It extends toward the first support member 71 and the second and third support members 72 and 73. On the other hand, the lifting / lowering cords CD1 to CD3 led out from the other end port 222 of the braking device 1000 are arranged in the longitudinal direction of the head box 101 by a guide pulley 96 (here, guide pulleys 96a to 96c) provided at least one end of the other end port 222. And is guided to the stopper 77. The turning pulley 90b is disposed by inserting a shaft through a pair of pulley arrangement holes 2tb and 2bb (see FIGS. 17A and 32) in the attachment 200, and the turning pulley 90e is a pair of pulleys in the attachment 200. It is arrange | positioned by inserting the axis | shaft in pulley arrangement | positioning hole 2te, 2be (refer FIG. 17A and FIG. 32).

  By the way, when the operator pulls the operation cord (elevating cords CD1 to CD3) (that is, when raising the screen described later), the elevating cords CD1 to CD3 are directed from the other end 222 of the braking device 1000 toward the one end 221. Moving. At this time, the turning pulley 90b rotates counterclockwise as the lifting / lowering cord CD1 moves. The turning pulley 90e rotates clockwise with the movement of the lifting / lowering cords CD2 and CD3. On the other hand, when moving in the opposite direction (that is, when lowering a screen to be described later), the lifting / lowering codes CD1 to CD3 move from one end 221 to the other end 222 of the braking device 1000. At this time, the turning pulley 90b rotates clockwise with the movement of the lifting / lowering cord CD1. The turning pulley 90e rotates counterclockwise as the lifting / lowering cords CD2 and CD3 move. That is, the turning pulley 90b rotates in a predetermined direction, and the turning pulley 90e rotates in the direction opposite to the predetermined direction.

4.2.2 Modification 2 of the second embodiment
FIG. 33 is a plan view showing an arrangement in the head box 101 according to the second modification of the second embodiment of the present invention. As shown in FIG. 33, the head box 101 according to the second modification of the second embodiment includes a gear box 76 and a first support member from the rear (right) to the front (left) along the longitudinal direction. 71, a stopper 77, a braking device 1000 and an attachment 200, a second support member 72, and a third support member 73 are disposed. Three code CDs extend in the head box 101.

  As is clear from a comparison of FIGS. 32 and 33, the second modification of the second embodiment is similar to the first modification of the second embodiment, but the second support member 72 is the second embodiment. It should be noted that the rotation is 180 degrees from the direction according to the first modification of the embodiment. That is, as shown in FIG. 33, when the inner region of the head box 101 is divided into two equal parts along the longitudinal direction, one side is a front side region F, and the other side is a back side region R. Each cord other end outlet 85 in the support members 71, 73 is located in the rear side region R, and each cord other end outlet 85 in the second support member 72 is located in the front side region F. With such a configuration, the lifting / lowering cords CD1 and CD3 related to the first and third support members 71 and 73 support the back side of the bottom rail in the shielding device, and the lifting / lowering cord CD2 related to the second support member 72 is supported by the shielding device. Will support the front side of the bottom rail. As a result, there is an effect of keeping the bottom rail more horizontal. Further, the lifting / lowering cord CD2 extending between the second support member 72 and the turning pulley 90e has a predetermined angle α from the longitudinal direction of the head box 101 at the position of the turning pulley 90e. α is, for example, 5 to 85 degrees, preferably 15 to 75 degrees, more preferably 30 to 60 degrees, and specifically, for example, α = 30, 32.5, 35, 37.5. , 40, 42.5, 45, 47.5, 50, 52.5, 55, 57.5, 60 degrees, and may be within a range between any two of the numerical values exemplified here.

  The second modification of the second embodiment operates in substantially the same manner as each turning pulley of the first modification of the second embodiment. That is, the turning pulley 90b rotates in a predetermined direction, and the turning pulley 90e rotates in the direction opposite to the predetermined direction.

4.3 Modification of the third embodiment 4.3.1 Modification 1 of the third embodiment
FIG. 34 is a plan view showing an arrangement in the head box 101 according to the first modification of the third embodiment of the present invention. As shown in FIG. 34, the head box 101 according to the first modification of the third embodiment includes a first support member 71 and a gear box from the rear (right) to the front (left) along the longitudinal direction. 76, the second support member 72, the stopper 77, the braking device 1000 and the attachment 200, the third support member 73, and the fourth support member 74 are arranged. In addition, four code CDs extend in the head box 101.

  The arrangement mode of the head box 101 according to the first modification of the third embodiment differs from the third embodiment in the arrangement positions of various members (particularly, the positions of the first and second support members 71 and 72). As for the pulley arrangement of the attachment 200, a turning pulley 90d is provided in addition to the turning pulley of the attachment 200 according to the third embodiment. That is, the attachment 200 in the first modification of the third embodiment includes a turning pulley 90a in which a shaft is inserted into a pair of pulley arrangement holes 2ta and 2ba (see FIGS. 17A and 34), and a pair of pulley arrangement holes 2tc. 2b (see FIGS. 17A and 34), a turning pulley 90c having a shaft inserted therein, a turning pulley 90d having a shaft inserted into a pair of pulley arrangement holes 2td and 2bd (see FIGS. 17A and 34), and A shaft is inserted into the turning pulley 90f having the shaft inserted into the pair of pulley arrangement holes 2tf and 2bf (see FIGS. 17A and 34) and the pair of pulley arrangement holes 2tg and 2bg (see FIGS. 17A and 34). A turning pulley 90g and a turning pulley 90h in which a shaft is inserted into a pair of pulley arrangement holes 2th and 2bh (see FIGS. 17A and 34) are arranged. Moreover, it is similar to Modification 2 of the first embodiment and Modifications 1 and 2 of the second embodiment, and the insertion direction of the two cords CD (elevating cords CD1, CD4) with respect to the braking device 1000 is the head box. 101 in the short direction.

  The first to fourth support members 71 to 74 are arranged corresponding to the lifting codes CD1 to CD4. Further, at the position corresponding to each support member of the head box 101, there is provided a cord other end outlet 85 for leading the other end of the cord CD (an end portion on the side supporting the bottom rail) from the head box 101. ing. Here, as in the third embodiment, the lifting / lowering cords CD1 and CD4 are inserted into the braking device 1000, and the lifting / lowering cords CD2 and CD3 are inserted through the cord detours 7l and 7r. And the raising / lowering cords CD1, CD2 and the raising / lowering cords CD3, CD4 extend to the respective first to fourth support members 71-74 in directions opposite to each other.

  Specifically, the lifting / lowering cord CD1 derived from the braking device 1000 is turned through the turning pulleys 90a and 90c and the extending direction thereof is turned in the longitudinal direction of the head box 101, and then passed through the second support member 72 to the first. It extends toward the support member 71. The lifting / lowering cord CD4 derived from the braking device 1000 passes through the turning pulleys 90d and 90f and its extending direction is turned in the longitudinal direction of the head box 101, and then passes through the third support member 73 toward the first support member 71. Extend. That is, as shown in FIG. 34, the lifting / lowering cords CD1 and CD4 inserted through the braking device 1000 extend in directions opposite to each other. After the lifting / lowering cord CD2 is led out from the end of the left cord bypass circuit 7l and the extension direction is turned through the turning pulleys 90f, 90d, 90c, 90a to the longitudinal direction of the head box 101, the second support member 72 is turned on. Extending towards. After the lifting / lowering cord CD3 is led out from the end portion of the right cord detour 7r and the extending direction is turned to the longitudinal direction of the head box 101 through turning pulleys 90a, 90c, 90d, and 90f, the third support member 73 is turned on. Extending towards. That is, as shown in FIG. 34, the lifting / lowering cords CD2 and CD3 not inserted through the braking device 1000 extend in directions opposite to each other.

  On the other hand, the lifting / lowering cords CD1 to CD4 led out from the other end port 222 of the braking device 1000 have a longitudinal direction of the head box 101 by a guide pulley 96 (here, guide pulleys 96a to 96c) provided at least one end of the other end port 222. And is guided to the stopper 77.

  Thereafter, the stopper 77 passes through the gear box 76 and exits from the cord one end outlet 86 to the head box 101, and the elevating cords CD1 to CD4 are suspended as operation cords (not shown).

  By the way, when the operator pulls the operation cords (elevating codes CD1 to CD4) (that is, when raising the screen described later), the elevating codes CD1 to CD4 are directed from the other end port 222 of the braking device 1000 toward the one end port 221. It moves (however, the lift codes CD2 and CD3 are not inserted through the braking device 1000). At this time, the turning pulley 90a rotates clockwise along with the movement of the lifting / lowering cord CD1. The turning pulley 90c rotates clockwise with the movement of the lifting / lowering cords CD1 and CD2. The turning pulley 90d rotates counterclockwise as the elevating cords CD3 and CD4 move. The turning pulley 90f rotates counterclockwise as the lifting / lowering cord CD4 moves. The turning pulley 90h rotates counterclockwise as the lifting / lowering cord CD2 moves. On the other hand, when moving in the opposite direction (that is, when lowering a screen to be described later), the lifting / lowering codes CD1 to CD3 move from one end 221 to the other end 222 of the braking device 1000. At this time, the turning pulley 90a rotates counterclockwise as the lifting / lowering cord CD1 moves. The turning pulley 90c rotates counterclockwise as the lifting / lowering cords CD1 and CD2 move. The turning pulley 90d rotates clockwise with the movement of the lifting / lowering cords CD3 and CD4. The turning pulley 90f rotates clockwise with the movement of the lifting / lowering cord CD4. The turning pulley 90h rotates clockwise with the movement of the lifting / lowering cord CD2. That is, the turning pulleys 90a and 90c rotate in a predetermined direction, and the turning pulleys 90d, 90d and 90f rotate in the direction opposite to the predetermined direction.

4.3.2 Modification 2 of the third embodiment
FIG. 35 is a plan view showing an arrangement in the head box 101 according to the second modification of the third embodiment of the present invention. As shown in FIG. 35, the head box 101 according to the second modification of the third embodiment includes a first support member 71 and a gear box from the rear (right) to the front (left) along the longitudinal direction. 76, the second support member 72, the stopper 77, the braking device 1000 and the attachment 200, the third support member 73, and the fourth support member 74 are arranged. In addition, four code CDs extend in the head box 101.

  As is apparent from comparing FIGS. 34 and 35, the second modification of the third embodiment is similar to the first modification of the third embodiment, but the first and fourth support members 71, Note that 74 is rotated 180 degrees from the direction according to the first modification of the third embodiment. That is, as shown in FIG. 35, when one of the inner region of the head box 101 divided into two along the longitudinal direction is a front side region F and the other is a back side region R, the first and third Each cord other end outlet 85 in the support members 71 and 73 is located in the front side region F, and each cord other end outlet 85 in the second and fourth support members 72 and 74 is located in the rear side region R. With such a configuration, the lifting cords CD1 and CD4 related to the first and fourth support members 71 and 74 support the front side of the bottom rail in the shielding device, and the lifting cords related to the second and third support members 72 and 73 are supported. CD2 and CD3 support the back side of the bottom rail in the shielding device. As a result, there is an effect of keeping the bottom rail more horizontal. Further, the lifting / lowering cord CD1 extending between the first support member 71 and the turning pulley 90a has a predetermined angle β from the longitudinal direction of the head box 101 at the position of the turning pulley 90a. β is, for example, 5 to 85 degrees, preferably 15 to 75 degrees, more preferably 30 to 60 degrees, and specifically, for example, β = 30, 32.5, 35, 37.5. , 40, 42.5, 45, 47.5, 50, 52.5, 55, 57.5, 60 degrees, and may be within a range between any two of the numerical values exemplified here. Similarly, the lifting / lowering cord CD4 extending between the fourth support member 73 and the turning pulley 90f is disposed at a position of the turning pulley 90f with a predetermined angle γ from the longitudinal direction of the head box 101. γ is, for example, 5 to 85 degrees, preferably 15 to 75 degrees, more preferably 30 to 60 degrees, and specifically, for example, β = 30, 32.5, 35, 37.5. , 40, 42.5, 45, 47.5, 50, 52.5, 55, 57.5, 60 degrees, and may be within a range between any two of the numerical values exemplified here.

  The second modification of the third embodiment operates in substantially the same manner as each turning pulley of the first modification of the third embodiment. That is, the turning pulleys 90a and 90c rotate in a predetermined direction, and the turning pulleys 90d, 90d and 90f rotate in the direction opposite to the predetermined direction.

5). Shielding device Finally, the shielding device (here, the pleated screen 100a) employing the braking device 1000 and the attachment 200 according to the present invention will be described. FIG. 37 is a front view of the pleated screen 100a (right side operation) according to the embodiment of the present invention. 38 and 39 are cross-sectional views showing a mode in which the attachment 200 and the braking device 1000 are arranged in the head box 101 of the pleated screen 100a according to the embodiment of the present invention. 40A is a plan view of the pleated screen 100a according to the embodiment of the present invention, and FIG. 40B is a partially enlarged view of FIG. 40A. FIG. 41 is a side view of the pleated screen 100a according to the embodiment of the present invention.

  As shown in FIG. 37, the pleated screen 100 a according to this embodiment is supported by a screen 102 that can be bent in a zigzag shape in the vertical direction from the head box 101, and a bottom rail 103 is attached to the lower end of the screen 102. It is worn. The screen 102 is formed by bending a piece of fabric in a zigzag shape.

  In the longitudinal direction of the head box 101, a plurality of lifting cords CD are suspended. In addition, since the number of the raising / lowering cord CD can be variously implemented as described above, the illustration thereof is omitted in FIG. As shown in FIG. 41, in the present embodiment, the pleat piece 102b constituting the screen 102 is configured to have a fold 102c. And the insertion hole 102a is provided in the crease | fold 102c, and the raising / lowering code | cord | chord CD is penetrated here. A bottom rail 103 is attached to the lower end of the lifting / lowering cord CD.

  Further, the other end of the hanging up / down cord CD that is suspended is guided to one side of the head box 101 via the above-described braking device 1000 and the like in the head box 101, and the operation cord from one end (the cord one end outlet 86). It hangs down as 104 and is located near the operator's hand. In FIG. 37, a configuration in which the operation cord 104 is suspended on the right side of the pleat screen 100a is employed. When the operator operates the operation code 104 (elevation code CD), the screen 102 can be moved up and down together with the bottom rail 103. For example, when the operator pulls out the operation cord 104, the screen 102 is folded upward by pulling up the bottom rail 103. The bottom rail 103 can be positioned at an arbitrary position by the stopper 77. In other words, if the operator stops the operation of pulling out the operation code 104 (elevating code CD) and releases it, the stopper 77 is activated to prevent the bottom rail 103 from falling under its own weight, and the operation code from the state in which the stopper 77 is activated. When 104 (elevating cord CD) is pulled slightly downward, the operation of the stopper 77 is released, and the bottom rail 103 can be lowered by its own weight.

  In particular, the above-described braking device 1000 can lower the bottom rail 103 with an appropriate lowering speed by applying an appropriate braking force when the bottom rail 103 is lowered. Further, by adopting the attachment 200, even if the number of the lifting / lowering cords CD is four or more, some lifting / lowering cords CD are not inserted, so that up to three lifting / lowering cords CD are originally supported. The braking device 1000 can be employed.

  As shown in FIG. 38, the head box 101 is provided with protrusions 101al and 101ar. The protrusion 200al is provided so as to restrict the movement of the above-described locking portions 8fl and 8rl (however, the locking portion 8rl is not shown in FIG. 38) in the attachment 200, whereby the attachment 200 is locked. Similarly, the projection 200ar is provided so as to restrict the movement of the above-described locking portions 8fr and 8rr (however, the locking portion 8rr is not shown in FIG. 38) in the attachment 200, whereby the attachment 200 is locked. The As shown in FIG. 39, the braking device 1000 and the attachment 200 are both locked by the attachment cylinders 702 and 8b penetrating the head box 101.

  A pitch holding cord 106 is suspended from the head box 101 on the back side of the screen 102. The pitch holding cord 106 has an upper end attached to the head box 101 and a lower end attached to the bottom rail 103. The pitch holding cord 106 is set to a length that is substantially tensioned when the bottom rail 103 is lowered to the lower limit.

  The pitch holding cord 106 is provided with a large number of annular holding portions 107 at equal intervals, and the lifting / lowering cord CD is inserted therethrough. That is, the holding unit 107 is configured to surround the side periphery of the lifting / lowering cord CD. With such a configuration, as shown in FIG. 37, when the bottom rail 103 is lowered to the lower limit, the front end portion of each holding portion 107 engages with the lifting / lowering cord CD, and each holding portion 107 lowers each fold. And the folds of the screen 102 are held at equal intervals.

  That is, when the bottom rail 103 is lowered to the lower limit, the screen 102 is extended downward, and the bottom rail 103 is supported by the lifting / lowering cord CD and the pitch holding cord 106 at the front and rear edges thereof, and the upper surface thereof becomes substantially horizontal. So that it is suspended. At this time, the holding portions 107 of the pitch holding cord 106 apply tension to the lifting / lowering cord CD at equal intervals, whereby the folds of the screen 102 are held at substantially equal intervals. When the operator pulls out the operation cord 104 (elevating cord CD) from this state, the bottom rail 103 is pulled up and the screen 102 is folded upward.

  In the above description, the configuration in which the operation cord 104 is suspended on the right side of the pleat screen 100a (right side operation) has been described with reference to FIGS. 37 to 41. However, as shown in FIG. By reversing along the longitudinal direction, it is possible to adopt a form (left side operation) in which the operation cord 104 is suspended on the left side of the pleated screen 100a as shown in FIG. In other words, the attachment 200 according to the present embodiment is characterized in that it can be changed to the left and right according to the operation depending on the orientation of the attachment 200 in the head box 101.

6). Conclusion As described above, according to the present embodiment, it is possible to provide a shielding device capable of stabilizing the braking performance.

  While various embodiments according to the present invention have been described, these are presented as examples and are not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. The embodiments and the modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

2ba: pulley arrangement hole 2bb: pulley arrangement hole 2bc: pulley arrangement hole 2bd: pulley arrangement hole 2be: pulley arrangement hole 2bf: pulley arrangement hole 2bg: pulley arrangement hole 2bh: pulley arrangement hole 2ta: pulley arrangement hole 2tb: pulley arrangement hole 2tc: pulley arrangement hole 2td: pulley arrangement hole 2te: pulley arrangement hole 2tf: pulley arrangement hole 2tg: pulley arrangement hole 2th: pulley arrangement hole 3b: bottom 3bc: bottom 3bf: bottom 3br: bottom 3t: canopy 4il: left inner wall 4ir: right inner wall 4l: left wall 4r: right wall 5b: back surface 5f: front surface 5r: back surface 5ra: partition 5rb: partition 6a: opening 6b: opening 6c: opening 7l: left cord bypass 7r : Right cord bypass 8al: Claw part 8ar: Claw part 8b: Mounting cylinder 8fl: Locking part 8fr: Locking part 8rl: Locking part 8rr: Locking 10A: Case 11: Stopper 13: Gutter 16: First ceiling wall groove 16A: First guide wall 17: Second ceiling wall groove 17A: Second guide wall 19: Engagement hole 31: Shaft core 40: Idle roller 41 : Shaft core 42: roller unit 50: pinion gear 70: base 71: first support member 71: fourth support member 72: second support member 73: third support member 74: fourth support member 75: fifth support member 76: Gear box 77: Stopper 81: Turning pulley 82: Turning pulley 85: Cord other end outlet 86: Cord one end outlet 90a: Turning pulley 90b: Turning pulley 90c: Turning pulley 90d: Turning pulley 90e: Turning pulley 90f: Turning pulley 90g: turning pulley 90h: turning pulley 91: turning member 92: first turning member 93: second turning member 96: guide pulley 96a: Inner pulley 96b: guide pulley 96c: guide pulley 97: turning pulley 98: turning pulley 100a: pleated screen 100b: pleated screen 101: head box 101al: protrusion 101ar: protrusion 102: screen 102a: insertion hole 102b: pleat piece 102c : Fold 103: Bottom rail 104: Operation cord 106: Pitch holding cord 107: Holding portion 114: Support groove 115: Inner peripheral gear 200: Attachment 200s: Internal space 220: Slider 226: First ceiling wall groove 227: Second ceiling Wall groove 228: First bottom wall groove 229: Second bottom wall groove 230: Projection 240: Knurl 241: Washer 260: Internal toothed carrier 261: Internal gear 263: Support shaft 280: Planetary gear 320: Weight holder with sun gear 323: Thick Gear 340: Weight 702: Mounting cylinder 706: First base groove 707: Second base groove 708: Cylindrical portion 1000: Braking device CD: Code CD1: Lift code CD2: Lift code CD3: Lift code CD4: Lift code CD5: Lift code

Claims (8)

A shielding device including a braking device for braking movement of a plurality of cords and a shielding material,
The plurality of cords to be braked by the braking device are arranged so as to go in different directions directly or indirectly as the weight of the shielding material drops.
The different direction is a direction that cancels a force acting on the braking device,
Shielding device. The braking device includes a cord capturing unit that captures the cord,
The code whose movement is captured by the code capturing unit is:
Configured to go in opposite directions on the braking side,
The shielding apparatus according to claim 1. A plurality of cords including a head box, a braking device, and first and second cords;
The braking device includes a cord capturing unit,
The first and second cords can be braked with the movement of the cords by the cord catching unit,
The braking device is disposed between the first and second support members,
Shielding device. The braking device is disposed between the first and second support members,
The shielding apparatus according to claim 3. The first support member is disposed between the cord one end outlet and the braking device,
The shielding apparatus of Claim 3 or Claim 4. The other end is directed toward the second support member;
A turning member is provided between the other end opening and the second support member,
The first cord is turned by the turning member,
The shielding apparatus as described in any one of Claims 3-5. The turning member is provided on an attachment attached to the braking device,
The shielding apparatus according to claim 6. The other end port faces the short direction of the head box,
The shielding apparatus as described in any one of Claims 3-7.