JP2020020174A - Shielding device - Google Patents

Abstract

To provide a shielding device which can be hung down from a headbox in a state that two kinds of operation codes can be easily discriminated.SOLUTION: A shielding device 1 has a first drive shaft 201a which is rotatably pivoted in a headbox, and can drive a bottom rail 31, and a second drive shaft 201b which is rotatably pivoted in the headbox, and can drive an intermediate bar 41. The shielding device also comprises a first pulley 53a for driving the first drive shaft 201a, and a second pulley 53b arranged in a position different from that of the first pulley 53a in a longitudinal direction of the headbox, and driving the second drive shaft 201b.SELECTED DRAWING: Figure 3

Description

  This embodiment relates to a shielding device having two shielding members.

  BACKGROUND ART Conventionally, a shielding device such as a blind, a curtain, or a partition in which two shielding materials are arranged side by side is known. In this type of shielding device, a bottom rail disposed at a lowermost end, and the bottom rail and a head box are provided. The first shielding member disposed between the bottom rail and the intermediate bar, and the second shielding bar disposed between the intermediate bar and the headbox are separately raised and lowered by the intermediate bar disposed between the intermediate bar and the head box. The two shielding members are respectively raised and lowered.

  Regarding such a shielding device having two shielding members, a shielding device disclosed in Patent Literature 1 below is known. The shielding device includes an endless operation cord, a pulley around which the operation cord is wound, an operation shaft connected to rotate integrally with the pulley, and rotated by transmitting an operation force, and an operation shaft that can rotate integrally with the operation shaft. A clutch that is slidable on the shaft in the axial direction, and a first transmission member and a second shielding member that are respectively disposed on both sides of the clutch in the axial direction and transmit a driving force to a first drive shaft that moves up and down the first shielding member. An operating device having a second transmitting member for transmitting a driving force to a second drive shaft to be moved up and down, wherein a sliding direction of the clutch is determined by a rotation direction of the operating shaft, and the clutch slid on the operating shaft is provided. The rotation of the operation shaft is transmitted to one of the drive shafts via the one transmission member by engaging with one of the transmission members.

  According to such a shielding device, the rotation is transmitted by the sliding direction of the clutch determined according to the rotation direction by operating the operation shaft to rotate to one of them with one operation code. The transmitted transmission member is switched to the first transmission member or the second transmission member, and the transmission of rotation to either drive shaft can be performed by one clutch unit. As a result, the number of components of the operating device of the shielding device can be reduced to achieve space saving.

JP 2011-220077 A

  According to the shielding device disclosed in Patent Document 1 described above, one operation cord hangs from two places on the indoor side and the outdoor side in the front-rear direction of the shielding device, and the hanging position of these operation codes is The position is substantially coincident in the width direction, that is, in the longitudinal direction of the head box. For this reason, there is a problem that it is difficult to distinguish between an operation code hanging down from the indoor side and an operation code hanging down from the outdoor side, particularly in a situation where the operation code to be hung is twisted and the front and rear operation codes are interchanged. Was.

  The present invention has been made to solve the above-described problem, and has as its object to drop two types of operation codes from a head box in a state where they can be easily distinguished.

  In order to solve the above-described problems, one embodiment of the present invention includes a first driving shaft rotatably supported in a head box and capable of driving a first shielding member, and a rotatably supported shaft in the head box. And a second drive shaft capable of driving a second shield member, wherein the first pulley drives the first drive shaft, and a position different from the first pulley in a longitudinal direction of the head box. And a second pulley that drives the second drive shaft.

  According to the present invention, it is possible to provide a shielding device capable of hanging down from a head box in a state where two types of operation codes can be easily distinguished. Other effects of the present invention will also be described in the following embodiments.

It is a front view showing the composition of the shielding device concerning an embodiment. 1 is a schematic plan perspective view schematically illustrating a shielding device according to an embodiment. It is a top view showing the composition of the operation device with which the shielding device concerning an embodiment is provided. It is a perspective view showing the composition of the operating device concerning an embodiment. FIG. 4 is an exploded perspective view of the operating device according to the embodiment as viewed from a side of a first interlocking member. FIG. 5 is an exploded perspective view of the operating device according to the embodiment as viewed from a side of a second interlocking member. FIG. 4 is a cross-sectional view taken along the line AA shown in FIG. 3, where (a) shows a state when the first operation code is not operated and (b) shows a state when the first operation code is operated. FIG. 4 is a sectional view taken along line BB shown in FIG. 3, where (a) shows a state when the second operation code is not operated and (b) shows a state when the second operation code is operated. It is a side view which shows the transmission mechanism with which the operating device which concerns on embodiment is provided. FIG. 4 is a sectional view taken along line CC shown in FIG. 3. FIG. 4 is a cross-sectional view taken along line DD shown in FIG. 3, where (a) shows a state when the first operation code is not operated, and (b) shows a state when the first operation code is operated. FIG. 4 is a cross-sectional view taken along line EE shown in FIG. 3, where (a) shows a state when the first operation code is not operated, and (b) shows a state when the first operation code is operated. It is a front view of the shielding device which shows the state where the 1st operation code was pulled down. It is a front view of the shielding device showing the state where the 2nd operation cord was pulled down. It is a front view showing the composition of the shielding device concerning other embodiments.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In the present embodiment, the front side of the indoor side when the shielding device is provided, the back side of the outdoor surface, the front and rear directions are orthogonal to the front and back, the longitudinal direction of the shielding device is the left and right direction. This will be described hereinafter. In the specification and the drawings, components having substantially the same function are denoted by the same reference numeral, and the description thereof will not be repeated.

(overall structure)
First, the overall configuration of the shielding device including the operating device for the shielding device according to the present embodiment will be described. 1 and 2 are a front view and a schematic plan perspective view of a shielding device according to the present embodiment, respectively. In FIG. 1, only the headbox is shown in a vertical section.

  As shown in FIGS. 1 and 2, the shielding device 1 according to the present embodiment is a horizontal pleated screen, and is formed in a head box 2, a bottom rail 31 as a first moving member, and a string or tape shape. Two lifting cords 32, a screen 33 as a first shielding material, an intermediate bar 41 as a second moving member, two light control cords 42 formed in a string or a tape, (2) A screen 43 as a shielding material and an operation device 5 are provided.

  The head box 2 is fixed to a window frame or the like via a bracket (not shown), and is formed in a long box shape having an accommodation space therein. In the head box 2, a first drive shaft 201a, two first winding drums 202a, a first stopper 203a, a first brake 204a, a second drive shaft 201b, and two second winding drums The second stopper 202b, the second stopper 203b, and the second brake 204b are housed therein. The first drive shaft 201a, the two first winding drums 202a, the first stopper 203a, and the first brake 204a constitute a first drive system that moves up and down the bottom rail 31. The second drive shaft 201b, the two second take-up drums 202b, the second stopper 203b, and the second brake 204b form a second drive system that moves up and down the intermediate bar 41. In the present embodiment, the first drive system is disposed on the rear side, the second drive system is disposed on the front side, and the first drive system and the second drive system are arranged side by side at different positions in the front-rear direction. However, for example, the first drive system and the second drive system may be juxtaposed so that the positions are different in the vertical direction, and the arrangement of the first drive system and the second drive system may be arranged in the front-rear direction or the vertical direction. It may be reversed.

  Each of the first drive shaft 201a and the second drive shaft 201b is a prism-shaped member extending in the left-right direction, and is rotatably supported in the head box 2 so that the axial direction thereof is directed in the left-right direction. Here, the axis of the first drive shaft 201a is located behind the axis of the second drive shaft 201b, and the position of the axis differs in the front-rear direction. In the following description, the axis of the first drive shaft 201a is referred to as a first axis, and the axis of the second drive shaft 201b is referred to as a second axis.

  The two first winding drums 202a are respectively penetrated by the first drive shaft 201a so as to rotate integrally with the first drive shaft 201a, and one end of the corresponding lifting cord 32 of the two lifting cords 32 is wound and wound. It is connected so that it can be unwound. The two second winding drums 202b are respectively penetrated by the second drive shaft 201b so as to rotate integrally with the second drive shaft 201b, and one end of the corresponding light control cord 42 of the two light control cords 42 is wound. It is connected so that it can be unwound and unwound. The first stopper 203a restrains the rotation of the first drive shaft 201a. The second stopper 203b restrains the rotation of the second drive shaft 201b. The first brake 204a reduces the rotation of the first drive shaft 201a. The second brake 204b reduces the rotation of the second drive shaft 201b.

  The bottom rail 31 is a member to which the other ends of the two lifting / lowering cords 32 are connected, supported by being suspended from the head box 2 so as to be located at the lowermost end in the shielding device 1, and formed to be long in the left-right direction. . The intermediate bar 41 is connected to the other end of the two light control cords 42, is suspended from the head box 2 so as to be located between the head box 2 and the bottom rail 31 in the up-down direction, and is long in the left-right direction. It is a member formed in a scale. The screen 33 has an upper end connected to the lower surface of the intermediate bar 41 and a lower end connected to the upper surface of the bottom rail 31. The screen 33 is formed in a pleated shape that can be folded in the vertical direction. It is a shielding member inserted in the direction. The screen 43 has an upper end connected to the lower surface of the head box 2 and a lower end connected to the upper surface of the intermediate bar 41, and is formed in a pleat shape that can be folded in the vertical direction. This is a shielding member that is inserted vertically.

(Schematic configuration of operation device 5)
Next, a schematic configuration of the operation device 5 according to the present embodiment will be described. As shown in FIGS. 1 and 2, the operation device 5 is provided at one of the left and right ends of the head box 2, and at the right end in the present embodiment. A drive mechanism including a first pulley 53a, a second pulley 53b, and the like, each of which is wound so that each operation code can be unwound and wound up. .

  The first operation cord 52a is formed in a string shape or a tape shape, and has a cord member 521a having one end connected to the first pulley 53a so as to be able to be wound and unwound, and a grip portion provided at the other end of the cord member 521a. 522a and a stopper 523a fixedly provided at a predetermined position between one end and the other end. The grip portion 522a is gripped by the operator of the shielding device 1 when the operator operates the first operation code 52a, specifically, when the code member 521a is pulled downward so as to be unwound from the first pulley 53a. It is a member provided for. The stopper 523a regulates the cord member 521a from being wound by the first pulley 53a by a predetermined amount or more. The structure of the cord member 521a and the stopper 523a may be a structure in which two different cords are connected to each other in the stopper 523a, or a structure in which the stopper 523a is fixed in the middle of one cord. Good.

  The second operation code 52b is formed in a string shape or a tape shape, and has a code member 521b having one end connected to the second pulley 53b so as to be wound and unwound in the same direction as the first operation code 52a, and a code member 521b. And a stopper 523b fixedly provided at a predetermined position between one end and the other end. The grip portion 522b and the stopper 523b are the same as the grip portion 522a and the stopper 523a, and a description thereof will be omitted. Naturally, similarly to the first operation code 52a, the structure of the code member 521b and the stopper 523b may be a structure in which two different codes are connected to each other in the stopper 523b. The structure may be fixed.

  The main body case 51 incorporates the above-described drive mechanism therein, and is formed with a housing space 511a capable of housing the stopper 523a and a housing space 511b capable of housing the stopper 523b as shown in FIG. The accommodating spaces 511a and 511b are positioned so as to be juxtaposed at the lower end on the front side at substantially the center in the left-right direction of the main body case 51, and the cord members 521a and 521b are wound around the first and second pulleys 53a and 53b, respectively. The stoppers 523a and 523b are accommodated in a state in which the stoppers 523a and 523b are operated (hereinafter, this state is referred to as a non-operation state).

  Further, in order to lead out the stoppers 523a and 523b housed in the housing spaces 511a and 511b, openings are formed in the main body case 51 for individually communicating the outside with the housing spaces 511a and 511b. The opening is formed continuously on the two front and lower surfaces so that the front and lower surfaces of the housing spaces 511a and 511b are open. Therefore, the stoppers 523a and 523b are formed with the front and lower surfaces exposed. It is accommodated in 511a and 511b so that it can be introduced and led out, respectively.

  The accommodation spaces 511a and 511b are provided with through-holes (not shown) through which the cord members 521a and 521b can be inserted and through which the stoppers 523a and 523b cannot be inserted. , 521b can be moved in and out of the main body case 51. Therefore, even when the cord members 521a and 521b are completely wound around each pulley as the non-operation state, the stoppers 523a and 523b enter the main body case 51 by the stopper walls 523a and 523b abutting against the ceiling wall. Is preventing that. Thus, the winding of the cord members 521a and 521b around the respective pulleys by a predetermined amount or more is regulated, and the introduction of the cord members 521a and 521b into the main body case 51 is regulated.

(Detailed configuration of operation device 5)
Next, a detailed configuration of the operation device 5 will be described with reference to FIGS. FIG. 3 is a plan view showing the configuration of the operating device according to the present embodiment, and FIG. 4 is a perspective view thereof. FIG. 5 is an exploded perspective view of the operating device according to the present embodiment viewed from the first interlocking member side, and FIG. 6 is an exploded perspective view viewed from the side of the second interlocking member. 7A and 7B are cross-sectional views taken along the line AA shown in FIG. 3. FIG. 7A illustrates a state when the first operation code is not operated, and FIG. 7B illustrates a state when the first operation code is operated. 8A and 8B are cross-sectional views taken along the line BB shown in FIG. 3, wherein FIG. 8A shows a state when the second operation code is not operated, and FIG. 8B shows a state when the second operation code is operated. FIG. 9 is a side view illustrating a transmission mechanism included in the operation device according to the present embodiment. For the sake of explanation, the main body case 51 is omitted in each drawing.

  As shown in FIGS. 3 to 6, the operating device 5 includes a first pulley 53a, a second pulley 53b, a support member 54, a first urging member 55a, a second urging member 55b, and a first interlocking member as a driving mechanism. 56a, a second interlocking member 56b, and a transmission mechanism 57. The first pulley 53a, the first urging member 55a, and the first interlocking member 56a are independently connected to the above-described first drive system, and the second pulley 53b, the second urging member 55b, the second interlocking member 56b, The transmission mechanism 57 is independently connected to the aforementioned second drive system. Therefore, the operating device 5 enables the two different screens to be individually lifted and lowered by the first drive system and the second drive system.

  The first pulley 53a has one end of the cord member 521a connected thereto and the cord member 521a wound around the peripheral wall so that the cord member 521a can be wound and unwound. In the present embodiment, the cord member 521a hangs down from the front in the front-rear direction. It is wound to be. On one side of the first pulley 53a, here, the right end in the left-right direction, there is provided a surrounding portion 531a that surrounds the first urging member 55a and accommodates the first urging member 55a in cooperation with the support member 54. A part of the peripheral wall forming the surrounding portion 531a is separated, and this is an outer locking portion 532a for detachably locking one end of the first biasing member 55a. The first pulley 53a is rotatably supported by a first support shaft 541a of a support member 54, which will be described later, and thus rotates in accordance with the pulling down of the cord member 521a.

  On the other hand, the second pulley 53b has one end of the cord member 521b connected thereto and the cord member 521b wound around the peripheral wall so as to be wound and unwound. The second pulley 53b is connected to a second support shaft 541b of the support member 54 described later. It is rotatably supported and rotates according to the pulling down of the cord member 521b. The second pulley 53b has the same configuration as the first pulley 53a. Therefore, a surrounding portion 531b corresponding to the above-described surrounding portion 531a and an outer locking portion 532b corresponding to the outer locking portion 532a are provided. I have.

  The first pulley 53a and the second pulley 53b in the present embodiment face each other so as to be substantially symmetric with respect to the support member 54, and are arranged in the left-right direction so that the rotation axis is coaxial. It is juxtaposed along. Therefore, the rotational force is transmitted to the first pulley 53a to the left in the left-right direction, and the rotational force is transmitted to the second pulley to the right in the left-right direction.

  The support member 54 is a plate-shaped member disposed between the first pulley 53a and the second pulley 53b and fixed to the inner wall of the main body case 51 and extending in a direction orthogonal to the left-right direction. The first support shaft 541a and the second support shaft 541b, which protrude outward, respectively, are provided. The first support shaft 541a rotatably supports the first pulley 53a at a distal end portion, and has an inner locking portion 542a at a rear end portion, that is, a root portion. On the other hand, the second support shaft 541b rotatably supports the second pulley 53b at the distal end, and has an inner locking portion 542b formed at the rear end.

  The inner locking portion 542a extends in the front-rear direction and is curved in the circumferential direction as shown in FIG. 7A, and the front side in the front-rear direction is connected to the first support shaft 541a, and The other end of the urging member 55a is locked by being wound around the surface thereof. On the other hand, the inner locking portion 542b has the same shape as the inner locking portion 542a as shown in FIG. 8A, and the other end of the second urging member 55b is wound along its surface. This is locked by being hung. Since the inner locking portions 542a and 542b lock the other end of the urging member in a simple form in which the other end is wound, the urging member can be easily detachable. The same applies to the above-described outer locking portions 532a and 532b.

  In the present embodiment, since the first urging member 55a and the second urging member 55b are wound in the same direction, the inner locking portions 542a and 542b are formed to be symmetrical with each other. Note that the inner locking portions 542a and 542b are not limited to this shape, and the extending direction and shape are appropriate as long as the urging member can be locked. For example, the rear side in the front-rear direction is connected to the support shaft. In the former case, the biasing member may be reversely wound with the present embodiment, and in the latter case, the biasing member may change its winding direction according to the situation. It can be.

  As described above, in the present embodiment, the support of the first pulley 53a and the second pulley 53b and the support of the first urging member 55a and the second urging member 55b by the support member 54 are each shared by one member. I have. Further, since the second drive shaft 201b is disposed in front of the first drive shaft 201a, the support member 54 has an insertion hole 543 for inserting the second drive shaft 201b. If the interference with the second drive shaft 201b can be avoided, the length of the slit or the support member 54 in the front-rear direction may be reduced instead of the insertion hole 543.

  The first biasing member 55a is a spiral spring wound spirally as shown in FIGS. 5 and 7A, and is housed in the surrounding portion 531a of the first pulley 53a. Specifically, as shown in FIG. 7A, one end is wound around the outer engaging portion 532a of the first pulley 53a in the wound state, and the other end is the first support. It is wrapped around the inner locking portion 542a of the shaft 541a and locked. As a result, the first pulley 53a is constantly urged to rotate in the direction of winding the first operation cord 52a (hereinafter referred to as the winding direction, and the reverse is referred to as the unwinding direction). Winding of one operation code 52a by a predetermined amount or more is restricted. When the first operation cord 52a is pulled down in this state, the first pulley 53a rotates in the unwinding direction as shown in FIG. 7B, and the diameter of the first biasing member 55a gradually decreases in accordance with the rotation. The rotation is restricted in a state where the first support shaft 541a is wound around the rear end portion to the limit.

  On the other hand, the second urging member 55b has the same configuration as the first urging member 55a as shown in FIGS. 6 and 8A, and is housed in the surrounding portion 531b of the second pulley 53b. It is locked by the outer support portion 532b of the second pulley 53b and the inner support portion 542b of the second support shaft 541b. As shown in FIG. 6, the second urging member 55b is wound around the support member 54 so as to be plane-symmetric with the first urging member 55a, similarly to the second pulley 53b and the cord member 521b. And is disposed in the second pulley 53b, and constantly biases the second pulley 53b to rotate in the winding direction. Therefore, similarly to the first urging member 55a, when the second operation code 52b is pulled down, the diameter of the second urging member 55b gradually decreases in accordance with the rotation of the first pulley 53a as shown in FIG. 8B. However, when the second support shaft 541b is wound to the limit, the rotation is restricted.

  As described above, in the present embodiment, the first pulley 53a and the second pulley 53b are arranged in plane symmetry with the support member 54 as a boundary, and the cord member 521a, the cord member 521b, and the first biasing member 55a The second urging member 55b is also wound so as to be plane-symmetric with respect to the support member 54. Thus, as shown in FIG. 4, the first pulley 53a and the second pulley 53b are rotated with the winding direction and the unwinding direction being the same, and the cord members 521a and 521b are both arranged side by side from the front in the front-rear direction. Hanging.

  As shown in FIGS. 5 and 6, the first interlocking member 56a is formed in a lid shape that can be attached so as to cover a clutch mechanism described later assembled to the first pulley 53a. On the inner peripheral surface of the peripheral wall of the portion of the first interlocking member 56a that covers the clutch mechanism, engaging projections 561a protruding radially inward so as to engage and disengage with the clutch mechanism at regular intervals in the circumferential direction. A plurality is formed. Thereby, the first interlocking member 56a can rotate integrally or relatively in accordance with the rotation of the first pulley 53a. The first interlocking member 56a is formed with a cylindrical projection protruding out of the surface at substantially the center of the left side surface in the left-right direction, into which the first drive shaft 201a is inserted so as to rotate integrally. Accordingly, when the first interlocking member 56a rotates integrally with the first pulley 53a, the rotation is transmitted to the first drive shaft 201a.

  As shown in FIGS. 5 and 6, the second interlocking member 56b is formed in a lid shape that can be attached so as to cover a later-described clutch mechanism assembled to the second pulley 53b, and a portion that covers the clutch mechanism. A plurality of engagement protrusions 561b having the same function as that of the first interlocking member 56a are formed on the inner peripheral surface of the peripheral wall. On the other hand, the first gear 571 of the transmission mechanism 57 is provided substantially at the center of the right side surface in the left-right direction of the second interlocking member 56b, and the rotation axis of the first gear 571 rotates integrally with the first gear 571.

  As shown in FIG. 9, the transmission mechanism 57 includes a first gear 571 that is integrally rotatably connected to the second interlocking member 56b, a second gear 572 that is integrally rotatably connected to the second drive shaft 201b, A third gear 573 that is interposed between the first gear 571 and the second gear 572 and meshes with each gear to transmit the rotational force of the first gear 571 to the second gear 572;

  In the present embodiment, the first drive shaft 201a, the first interlocking member 56a, the first pulley 53a, the second pulley 53b, and the second interlocking member 56b are arranged in this order from the left in the left-right direction, and the respective rotation axes are arranged. Are disposed coaxially with the first axis. On the other hand, as described above, the second axis of the second drive shaft 201b is located forward of the first axis in the front-rear direction. Further, the operating device 5 is provided at the right end in the left-right direction of the head box 2, so that the rotational force of the second pulley 53b is input to the right side in the left-right direction. Therefore, the rotation of the second pulley 53b is controlled by the transmission mechanism 57 including the three gears described above between the second pulley 53b and the second drive shaft 201b. The rotation is converted to the center position and transmitted to the second drive shaft 201b.

  Next, the configuration of the clutch mechanism provided on each pulley will be described in detail with reference to FIGS. FIG. 10 is a sectional view taken along line CC shown in FIG. 11A and 11B are cross-sectional views taken along the line D-D shown in FIG. 3. FIG. 11A shows a state when the first operation code is not operated, and FIG. 11B shows a state when the first operation code is operated. 12A and 12B are cross-sectional views taken along the line EE shown in FIG. 3. FIG. 12A illustrates a state when the first operation code is not operated, and FIG. 12B illustrates a state when the first operation code is operated. Since the clutch mechanisms assembled to the first pulley 53a and the second pulley 53b have the same configuration, the clutch mechanism of the first pulley 53a will be described here as an example, and the clutch mechanism of the second pulley 53b will be described. The description of is omitted.

  As shown in FIG. 10, the clutch mechanism includes a relay shaft 581, a clutch drum 582, a clutch pin 583 (see FIG. 12), a guide washer 584, and a cam drive 585.

  As shown in FIGS. 10 to 12, the relay shaft 581 has a substantially cylindrical shape with one end formed to have a smaller diameter than the other end, and the one end is fitted into the first support shaft 541a, and the other end is connected to the clutch drum 582. And is supported so as not to rotate relatively. As shown in FIGS. 10 and 12, the clutch drum 582 has a hollow cylindrical shape, and has a relay shaft 581 fitted therein, and a clutch spring fitted on the peripheral wall thereof.

  As shown in FIG. 12, the clutch pin 583 is formed in a columnar shape and is slidably sandwiched between the guide washer 584 and the cam drive 585, and moves in the radial direction. Thus, the transmission / non-transmission of the rotation of the first pulley 53a to the first interlocking member 56a is performed. More specifically, when the engagement with the engagement protrusion 561a of the first interlocking member 56a is performed, the rotation of the first pulley 53a is transmitted to the first interlocking member 56a, and the engagement is released. , The transmission of the rotation of the first pulley 53a is released.

  As shown in FIG. 10, the guide washer 584 has a hollow disk shape, and a relay shaft 581 and a clutch drum 582 penetrate through the hollow portion thereof, and are supported so as to be relatively rotatable. As shown in FIG. 12, the guide washer 584 has a pair of protrusions 5841 for guiding the advancing and retreating operation of the clutch pin 583 on the first pulley 53a side, that is, the right-hand surface in the left-right direction. A pair of protrusions 5842 for rotating integrally with the cam drive 585 are provided so as to protrude outward from the two sets at a predetermined distance in the circumferential direction.

  As shown in FIG. 10, the cam drive 585 has a substantially hollow disk shape, and a clutch drum 582 penetrates a hollow portion thereof and is supported so as to be relatively rotatable. Also, as shown in FIGS. 11 and 12, the cam drive 585 has three projections 533a provided on the first pulley 53a and projecting toward the first interlocking member 56a and equally spaced in the circumferential direction (see FIG. 12). ) Are individually inserted, and three sets of openings 5851 that are integrally rotatably engaged with the first pulley 53a are provided at the same intervals as the protrusions 533a. A cylindrical portion 5850 is formed on the surface of the cam drive 585 on the side of the first interlocking member 56a. The cylindrical portion 5850 protrudes out of the plane, and the peripheral surface of the cylindrical portion 5850 has a cam surface for moving the clutch pin 583 forward and backward. Three sets of projections 5852 which are provided and are equally spaced in the circumferential direction are provided so as to protrude radially outward, and projections 5853 which can abut on the projections 5842 are provided so as to protrude radially inward. . The cam drive 585 can rotate relative to the guide washer 584, but when the projection 5842 and the projection 5853 abut, the relative rotation is regulated and the cam drive 585 rotates integrally.

(Device operation)
The operation of the operating device 5 configured as described above will be described with reference to FIGS. Here, an example will be described in which the first pulley 53a is operated by the first operation code 52a to drive the first drive system. When the second operation code 52b is used to operate the second pulley 53b, compared to the case where the first pulley 53a is operated, the drive target is the second drive system, and the rotational force of the second pulley 53b is transmitted. This is the same except that the signal is transmitted to the second drive system via the switch 57, and a detailed description thereof is omitted here.

  When the screen 33 has already been lowered to the lowest position, the projection 533a of the first pulley 53a does not contact the edge of the opening 5851 of the cam drive 585 as shown in FIG. ), The clutch pin 583 is not engaged with the engagement protrusion 561a of the first interlocking member 56a. Here, when the operator starts pulling down the first operation cord 52a, the first pulley 53a rotates in the unwinding direction by unwinding the code member 521a from the first pulley 53a, and the first urging member 55a rotates. The diameter is reduced accordingly (see FIG. 7B). Subsequently, with the rotation of the first pulley 53a in the unwinding direction, the protrusion 533a rotates in the unwinding direction and comes into contact with the opening 5851 as shown in FIG. Due to the contact, the first pulley 53a and the cam drive 585 start to rotate integrally.

  In response to this integral rotation, the projection 5852 and the projection 5853 of the cam drive 585 rotate in the unwinding direction, the cam surface of the projection 5852 comes into contact with the clutch pin 583, and the clutch pin 583 moves radially outward. As shown in FIG. 12 (b), it engages with the engagement protrusion 561a of the first interlocking member 56a. At the time of the engagement, the projection 5842 of the guide washer 584 and the projection 5853 of the cam drive 585 come into contact with each other as shown in FIG. Thereby, the rotation of the first pulley 53a is transmitted to the first drive shaft 201a via the first interlocking member 56a, and these rotate integrally in the unwinding direction. The first winding drum 202a winds the elevating cord 32 in response to the rotation of the first drive shaft 201a, whereby the bottom rail 31 is moved upward as shown in FIG. 13 to raise the screen 33.

  When the first operation code 52a is pulled down for a certain distance, for example, when the hand is released after the first operation code 52a is pulled down to the maximum limit, the first pulley 53a is moved in the winding direction by the repulsive force of the first biasing member 55a. The cord member 521a is wound up by rotating, that is, rotating in the reverse direction to the case of pulling down. In response, the first pulley 53a rotates in the reverse direction, and the cam drive 585 and the protrusion 5852 rotate in the reverse direction, thereby separating the protrusion 5852 and the clutch pin 583, and allowing the clutch pin 583 to slide in the radial direction. As a result, the engagement between the clutch pin 583 and the first interlocking member 56a is released. Therefore, the reverse rotation of the first pulley 53a is not transmitted to the first drive shaft 201a.

  By the operation of the clutch mechanism described above, every time the operation of lowering the first operation code 52a to some extent and the operation of returning after the operation are repeated, the rotation and non-rotation of the first drive shaft 201a are repeated, and the operation is performed in accordance with the amount of the lowering operation. The bottom rail 31 and the screen 33 are raised every predetermined distance. Thus, the length of the first operation code 52a required to raise the screen 33 to the highest position can be shortened.

  When it is desired to lower the raised bottom rail 31 and the screen 33, the first operation cord 52a is lightly pulled down to release the first stopper 203a and to maintain a constant speed by the action of the first brake 204a. The bottom rail 31 and the screen 33 can be lowered to the lowest position. Of course, when the first operation code 52a is released in this state, only the code member 521a is wound up, and after the winding, the screen 33 can be raised according to the operation amount by being pulled down again.

  When the second operation code 52b is pulled down, the operation is substantially the same as when the first operation code 52a is operated, except that the rotational force of the second pulley 53b is transmitted to the second drive shaft 201b via the transmission mechanism 57. Thus, the screen 43 can be raised. That is, when the cord member 521b is unwound from the second pulley 53b, the second pulley 53b rotates in the unwinding direction, and the rotation is transmitted to the clutch mechanism. By the operation of the clutch mechanism described above, the rotation in the unwinding direction is transmitted to the second interlocking member 56b and the first gear 571 provided integrally with the second interlocking member 56b, and rotates in the same direction. When the second gear 573 rotates in conjunction with the second gear 572, the second drive shaft 201b rotates in the same direction. The second winding drum 202b winds up the light control cord 42 in response to the rotation of the second drive shaft 201b, so that the intermediate bar 41 can be moved upward as shown in FIG. 14 to raise the screen 43. .

  According to the present embodiment described above, the first pulley 53a and the second pulley 53b are arranged side by side in the left-right direction, so that the first operation code 52a and the second operation code 52b are also set in the left-right direction. Since the first operation code 52a and the second operation code 52b can be drooped at different positions in the left-right direction, the two types of operation codes can be drooped in an easily distinguishable state. be able to. Entanglement of these codes can be reduced. Further, since these can be easily determined, the operability can be improved without confusing the operating sides of the first drive system and the second drive system.

  Further, in the present embodiment, the first pulley 53a and the second pulley 53b are disposed symmetrically on the surface, and the first pulley 53a and the second pulley 53b, the first urging member 55a, and the second Since the support with the urging member 55b is shared, the pulleys can be arranged close to each other, and the size of the operating device 5 can be reduced as compared with a form in which the pulleys are individually supported. Further, since the first pulley 53a and the second pulley 53b are rotatable relative to each other via the support member 54, it is also possible to operate the first operation code 52a and the second operation code 52b simultaneously. .

  Further, since the inner locking portions 542a and 542b are formed on the first and second support shafts 541a and 541b provided on both left and right surfaces of the support member 54, each of the first and second support shafts 541a and 542b is connected to each urging member with a simple configuration. Since the pulleys can be arranged on the left and right, and the components of the operating device 5 such as the clutch mechanism and the first and second interlocking members 56a and 56b can be arranged on the left and right, the operating device 5 can be further miniaturized. It becomes possible. Further, since the winding method of the first and second urging members 55a and 55b can be changed according to the shape of the inner locking portions 542a and 542b, the rotation direction of the pulley can be selected, It is also possible to switch the operation position left and right.

  In addition, since the first pulley 53a and the second pulley 53b are arranged symmetrically with respect to a plane so that the cord member and the urging member are wound in the same direction, the operation cord can hang down from the front in the front-rear direction. Thus, the operability of the operation code can be improved as compared with the case where the operation code hangs alternately.

  In addition, by using the transmission mechanism 57, the drive shaft can be disposed at a position where each of the pulleys is at a different rotational axis from each pulley, so that the arrangement of the operating device 5 and the arrangement of the components can be made flexible. Becomes

  In the present embodiment described above, the first operation code 52a and the second operation code 52b are suspended by the same amount as shown in FIG. 1, but as shown in FIG. The lengths of the first operation codes 52a may be made longer than the lengths of the second operation codes 52b in accordance with the difference in height between the first operation code 52 and the intermediate bar 41. With this configuration, it is possible to further easily determine the first operation code 52a and the second operation code 52b.

  Also, it has been described that the rotation axes of the first pulley 53a and the second pulley 53b are coaxial with the first axis. However, by appropriately providing a transmission mechanism including one or a plurality of gears, the pulleys can be connected to each other. The rotation axes may be provided so as to be different from each other.

  Further, the outer locking portions 532a and 532b are provided on each pulley, and the inner locking portions 542a and 542b are provided on the support member 54. However, the present invention is not limited to this, and the outer locking portions 532a and 532b may be provided. The pulleys may be provided on the support member 54, and the inner locking portions 542a and 542b may be provided on each pulley.

  In addition, the first moving member moved by the rotation of the first drive shaft 201a and the second moving member moved by the rotation of the second drive shaft 201b are respectively connected to the bottom rail 31, which is moved in the vertical direction, and the middle rail. Although the bar 41 is used, the moving direction of the first moving member and the second moving member may be any direction, and the first moving member and the second moving member are arranged back and forth, and are respectively arranged in a vertical direction or a horizontal direction. It may be moving. Although the pleated screen has been described as an example of the shielding device, the present invention can be applied to a shielding device such as a blind such as a horizontal blind, a vertical blind, a roll screen, a honeycomb screen, a tuck-up curtain, or an accordion door, a curtain, or a partition.

  The present invention may be embodied in various other forms without departing from its gist or main characteristics. Therefore, the above-described embodiment is merely an example in every aspect, and should not be interpreted in a limited manner. The scope of the present invention is defined by the appended claims, and is not limited by the specification. Furthermore, all modifications, various improvements, substitutions and modifications belonging to the equivalent scope of the claims are all within the scope of the present invention.

Reference Signs List 1 shielding device 2 head box 201a first drive shaft 201b second drive shaft 31 bottom rail (first moving member)
41 Intermediate bar (second moving member)
53a first pulley 53b second pulley 54 support members 542a, 542b inner locking portions (first and second locking portions)
55a first urging member 55b second urging member

Claims (7)

A first drive shaft rotatably supported in the head box and capable of driving the first moving member; and a second drive shaft rotatably supported in the head box and capable of driving the second moving member. A shielding device having
A first pulley that drives the first drive shaft;
A second pulley that is provided at a position different from the first pulley in the longitudinal direction of the head box and drives the second drive shaft. The shield device according to claim 1, wherein the first pulley and the second pulley have substantially coaxial rotation axes and are arranged side by side along the longitudinal direction. A support member provided between the first pulley and the second pulley;
A first urging member connected to the first pulley for urging the pulley to rotate in a predetermined rotational direction; and a supporting member connected to the second pulley for urging the pulley in a predetermined rotational direction. The shielding device according to claim 1, wherein the shielding device supports a second urging member that urges the rotating member to rotate. On one surface of the support member, a first locking portion for detachably locking the other end of the first urging member is provided, and on the other surface, the other end of the second urging member is provided. The shielding device according to claim 3, further comprising a second locking portion that is detachably locked. The first urging member and the second urging member are spiral springs wound in a spiral, respectively.
At least one of the first locking portion and the second locking portion is wound in the opposite direction even when the corresponding first urging member or the second urging member is wound in one direction. The shielding device according to claim 4, wherein the shielding device is provided so as to be able to be shared. A transmission mechanism for transmitting a rotational force of the second pulley to the second drive shaft;
The first drive shaft and the second drive shaft are juxtaposed such that their axes are different from each other in an orthogonal direction orthogonal to the longitudinal direction.
The rotation axis of the second pulley and the rotation axis of the second drive shaft are different from each other,
The said transmission member converts the rotation of the said 2nd pulley into the rotation of the axial center position substantially the same position as the said 2nd drive shaft, and transmits it to the said 2nd drive shaft. The shielding device according to any one of Claims 5 to 5. A first operation code for rotating the pulley is wound around the first pulley so as to be able to be wound and unwound,
On the second pulley, a second operation code for rotating the pulley is wound so as to be able to be wound and unwound,
The winding and unwinding directions of the first operation code on the first pulley and the winding and unwinding directions of the second operation code on the second pulley are the same. The shielding device according to claim 6.

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