Operating device

Abstract

To provide a technology with a simpler structure which can prevent rotation of a drive axle from being transmitted to a pulley.SOLUTION: An operation device comprises a pulley, a transmission axle, a coupling member, and a switch linkage part. The pulley is built to be able to wind up or unwind an operation code, energized by an energizing member to rotate in a winding up direction, and rotate in an unwinding direction against the energizing force of the energizing member by the operation code being unwound. To the transmission axle, rotation drive power is transmitted from the pulley. The coupling member is arranged to be able to rotate integrally with the transmission axle and to be able to move in the axis direction of the transmission axle, and is coupled to be able to transmit the rotation drive force of the transmission axle to a first drive shaft which drives a shield device when the coupling member is moved from an uncoupled position in the axis direction to a first direction side in the axis direction. The switch linkage part in cooperation with the coupling member transforms the rotary motion of the coupling member to a linear motion to move the coupling member from the uncoupled position in the first direction when the pulley is rotated in the unwinding direction and to move the coupling member to the uncoupled position when the pulley is rotated in the winding up direction.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] This embodiment relates to an operating device of a shielding device.

Background Art

[0002] Conventionally, as a shielding device having an operating device, the one shown in Patent Document 1 below is known. In this Patent Document 1, there are an operating shaft that rotates by the transmission of an operating force, a clutch that can rotate integrally with the operating shaft and slide axially on the operating shaft, and first transmission members respectively arranged on both axial sides of the clutch to transmit a driving force to a first drive shaft and second transmission members to transmit a driving force to a second drive shaft. A blind is provided, and the sliding direction of the clutch is determined by the rotation direction of the operating shaft. When the clutch sliding on the operating shaft engages with one of the transmission members, the rotation of the operating shaft is transmitted to one of the drive shafts via one of the transmission members. A blind is disclosed.

[0003] According to such a shielding device, when one side or the other side of an endless operating cord wound around a pulley that transmits a rotational force to the operating shaft is pulled down, the drive shaft to which the rotation of the operating shaft is transmitted is switched, and either a first shielding material operated by the first drive shaft or a second shielding material operated by the second drive shaft is selectively operated.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a shielding device having two shielding materials, in response to an operation on an operation cord, one end of which is connected to a pulley so as to be wound around the pulley and the other end of which is suspended so as to be pullable by an operator, the operator can selectively operate the raising operation and the lowering operation of each of the two shielding materials. In this type of shielding device, the state of a stopper capable of regulating each of the two drive shafts is switched from a state of regulating the rotation of either of the two drive shafts to a state of allowing the rotation of the drive shaft in response to an operation on the operation cord, whereby either of the two shielding materials can be selectively lowered by its own weight. However, not only in a shielding device having two shielding materials or a shielding device that lowers a shielding material by its own weight, but also in a shielding device having at least one or more shielding materials, there is a problem that the rotation of the drive shaft for operating the shielding material is transmitted to the pulley.

[0006] The present invention has been made to solve the above-described problems, and an object thereof is to provide an operating device capable of preventing the rotation of a drive shaft from being transmitted to a pulley with a simpler structure.

Means for Solving the Problems

[0007] To solve the above-described problems, one aspect of the present invention is an operating device for operating a drive shaft that drives a shielding device to perform a first operation of changing a shielding state of the shielding device including at least one or more shielding materials, the operating code being formed to be wound and unwound, being biased to rotate in the winding direction by a biasing member, and rotating in the unwinding direction against the biasing force of the biasing member when the operating code is unwound; a pulley; a transmission shaft to which a rotational driving force is transmitted from the pulley; and a connection member that is provided to be integrally rotatable with the transmission shaft and is provided to be movable in the axial direction of the transmission shaft, and is connected to the first drive shaft that drives the shielding device so as to be capable of transmitting the rotational driving force of the transmission shaft when moved from the non-connection position in the axial direction to the first direction side in the axial direction. The operating device further includes a switching interlocking portion that cooperates with the connection member to convert the rotational motion of the connection member into a linear motion, moves the connection member from the non-connection position to the first direction when the pulley is rotated in the unwinding direction, and moves the connection member to the non-connection position when the pulley is rotated in the winding direction.

Advantages of the Invention

[0008] According to the present invention, it is possible to prevent the rotation of the drive shaft from being transmitted to the pulley with a simpler structure.

Brief Description of the Drawings

[0009] [Figure 1] It is a front view showing the configuration of a shielding device according to the first embodiment. [Diagram 2] It is a schematic plan perspective view showing the configuration of a shielding device according to the first embodiment. [Diagram 3] It is an exploded perspective view showing the configuration of an operating device according to the first embodiment. [Figure 4] It is a plan view showing the internal configuration of an operating device according to the first embodiment. [Diagram 5] It is a bottom view showing the internal configuration of an operating device according to the first embodiment. [Figure 6]It is a sectional view taken along line A-A of FIG. 4 in a state where the operation code is not pulled. [Figure 7] It is a sectional view taken along line A-A of FIG. 4 in a state where the operation code is pulled. [Figure 8] It is a bottom view showing the configuration of the coupling mechanism according to the first embodiment. [Figure 9] It is a sectional view taken along line B-B of FIG. 8. [Figure 10] It is a perspective view showing the configuration of the connecting member. [Figure 11] It is a perspective view showing the configuration of the connecting member. [Figure 12] It is an exploded perspective view showing the configuration of the switching interlocking mechanism. [Figure 13] It is an upper perspective view showing the configuration of the switching interlocking mechanism. [Figure 14] It is a lower perspective view showing the configuration of the switching interlocking mechanism. [Figure 15] It is a plan view showing the switching interlocking mechanism in the first connection state. [Figure 16] It is a plan view showing the switching interlocking mechanism in the second connection state. [Figure 17] It is a bottom view for explaining the connection between the switching interlocking mechanism and the connecting member. [Figure 18] It is a plan view showing the operating device in the first connection state. [Figure 19] It is a bottom view showing a cam member whose tip is directed toward the first connection path. [Figure 20] It is a bottom view showing the connecting member when shifting to the first connection state. [Figure 21] It is a bottom view showing the connecting member when rotational force is transmitted in the first connection state. [Figure 22] It is a bottom view showing the connecting member when shifting from the first connection state to the unconnected state. [Figure 23] It is a view showing the relative position change of the cam member with respect to the cam groove related to the transition to the first connection state. [Figure 24] It is a view showing a shielding device in which a bottom rail ascending operation is performed. [Diagram 25]It is a plan view showing an operating device in the second connection state. [Figure 26] It is a bottom view showing a cam member with its tip directed toward the second connection path. [Figure 27] It is a bottom view showing a connecting member when shifting to the second connection state. [Figure 28] It is a bottom view showing a connecting member when rotational force is transmitted in the second connection state. [Figure 29] It is a bottom view showing a connecting member when shifting from the second connection state to the unconnected state. [Diagram 30] It is a view showing the relative position change of the cam member with respect to the cam groove related to the transition to the second connection state. [Diagram 31] It is a view showing a shielding device in which an intermediate bar is raised. [Diagram 32] It is a front view showing the configuration of the shielding device according to the second embodiment. [Diagram 33] It is a schematic plan perspective view showing the configuration of the shielding device according to the second embodiment. [Diagram 34] It is a bottom view showing the configuration of the operating device according to the second embodiment. [Diagram 35] It is a plan view showing the operating device when shifting to the connected state.

Embodiments for Carrying Out the Invention

[0010] Embodiments according to the present invention will be described with reference to the drawings. In this embodiment, a shielding device to which the present invention is applied to a pleated screen having two types of screens that can be raised and lowered as a shielding material will be taken as an example for explanation. In this embodiment, when the shielding device is provided, the indoor side surface is referred to as the front, the outdoor side surface is referred to as the back, the direction consisting of the front and the back is referred to as the front-rear direction, and the longitudinal direction of the shielding device is referred to as the left-right direction, and the following explanation will be made. Also, in this specification and the drawings, for components having substantially the same function, the same reference numerals are given and duplicate explanations are omitted.

[0011] <First Embodiment> (Overall Configuration) The overall configuration of the shielding device according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a front view showing the configuration of the shielding device according to the present embodiment, and FIG. 2 is a schematic plan perspective view thereof. In FIG. 1, a shielding device in a state where the bottom rail is lowered is shown, and only the inside of the head box is shown.

[0012] As shown in FIGS. 1 and 2, the shielding device 1 according to the present embodiment includes a head box 2, a bottom rail 31 as a first moving member, two lifting cords 32 formed in a string or tape shape, a screen 33 as a first shielding material, an intermediate bar 41 as a second moving member, two dimming cords 42 formed in a string or tape shape, a screen 43 as a second shielding material, and an operating device 6.

[0013] The head box 2 is fixed to a window frame or the like (not shown) via a bracket 21 and is formed in a long box shape having an accommodation space inside. Inside the head box 2, a first drive shaft 201a, two first winding drums 202a, a first brake device 203a, a first stopper device 204a, a second drive shaft 201b, two second winding drums 202b, a second brake device 203b, a second stopper device 204b, an interlocking gear 205, and a limiter 206 are accommodated.

[0014] The first drive shaft 201a, the two first winding drums 202a, the first brake device 203a, and the first stopper device 204a constitute a first drive system for raising and lowering the bottom rail 31. Also, the second drive shaft 201b, the two second winding drums 202b, the second brake device 203b, and the second stopper device 204b constitute a second drive system for raising and lowering the intermediate bar 41. The interlocking gear 205 is configured to interlock the second drive system with the first drive system under predetermined conditions. In the present embodiment, the first drive system is arranged on the rear side, the second drive system is arranged on the front side, and the first drive system and the second drive system are arranged side by side with different positions in the front-rear direction. For example, the first drive system and the second drive system may be arranged side by side with different positions in the vertical direction, or the arrangement of the first drive system and the second drive system may be reversed in the front-rear direction or the vertical direction.

[0015] The first and second drive shafts 201a and 201b are each prismatic members extending in the left - right direction and are pivotally supported in the head box 2 so as to be rotatable with the axial direction facing the left - right direction. Here, the axis of the first drive shaft 201a is located at the same position in the vertical direction and rearward with respect to the axis of the second drive shaft 201b, and the positions of the axes are different in the front - rear direction. In the following description, the axis of the first drive shaft 201a is referred to as the first axis, and the axis of the second drive shaft 201b is referred to as the second axis.

[0016] The two first take - up drums 202a are each penetrated through 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 out of the two lifting cords 32 is connected to be windable and unwindable. The two second take - up drums 202b are each penetrated through the second drive shaft 201b so as to rotate integrally with the second drive shaft 201b, and one end of the corresponding dimming cord 42 out of the two dimming cords 42 is connected to be windable and unwindable. The first stopper device 204a restrains the rotation of the first drive shaft 201a. The second stopper device 204b restrains the rotation of the second drive shaft 201b. The first brake device 203a decelerates the rotation of the first drive shaft 201a. The second brake device 203b decelerates the rotation of the second drive shaft 201b. The limiter 206 determines the lower limit position of the bottom rail 31 by regulating the winding and unwinding amount of the lifting cord 32.

[0017] The bottom rail 31 is a member formed to be long in the left - right direction. The other ends of the two lifting cords 32 are connected thereto, and it is suspended and supported from the head box 2 so as to be located at the lowermost end in the shielding device 1. The intermediate bar 41 is a member formed to be long in the left - right direction. The other ends of the two dimming cords 42 are connected thereto, and it is suspended and supported 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. The screen 33 is a shielding member formed in a pleated shape that can be folded in the up - down direction. The upper end is connected to the lower surface of the intermediate bar 41, and the lower end is connected to the upper surface of the bottom rail 31, and the two lifting cords 32 are partially inserted in the up - down direction. The screen 43 is a shielding member formed in a pleated shape that can be folded in the up - down direction. The upper end is connected to the lower surface of the head box 2, and the lower end is connected to the upper surface of the intermediate bar 41, and the two dimming cords 42 are partially inserted in the up - down direction.

[0018] As shown in FIG. 2, the operation device 6 is provided at one of the left and right ends of the head box 2, in this embodiment, at the right - hand end in the figure. In response to the operation of the operation portion 63 by the user of the shielding device 1, the bottom rail 31 and the intermediate bar 41 are each lifted and lowered.

[0019] (Configuration of the operation device) The configuration of the operation device according to the first embodiment will be described with reference to FIG. 3. FIG. 3 is an exploded perspective view showing the configuration of the operation device according to this embodiment.

[0020] As shown in FIG. 3, the operation device 6 includes a housing 60 (see FIG. 4), a first output shaft 61a, a second output shaft 61b, a pulley 62, an operation portion 63, a transmission shaft 65, a connecting member 66, a first receiving member 67a, a second receiving member 67b, an input gear 68a, an output gear 68b, an intermediate gear 68c, and a switching interlocking mechanism (Switching interlocking part) 69.

[0021] The housing 60 is composed of two housing parts 60a and 60b and a separator 60c. Each component in the operating device 6 except the operating part 63 is accommodated in the space defined by the two housing parts 60a and 60b. The accommodation space in the housing 60 is separated in the left - right direction by the separator 60c, and among the components accommodated in the accommodation space, only the pulley 62 is accommodated in the right - hand space in the accommodation space.

[0022] (Configuration of the pulley) The configuration of the pulley according to the first embodiment will be described with reference to FIGS. 4 to 7. FIGS. 4 and 5 are respectively a plan view and a bottom view showing the internal configuration of the operating device according to this embodiment. For the sake of convenience of explanation, in the following description, the view of the bottom surface seen obliquely from below is also referred to as the bottom view. FIGS. 6 and 7 are respectively cross - sectional views taken along line A - A of FIG. 4 in a state where the operating cord is not pulled and in a state where the operating cord is pulled.

[0023] As shown in FIGS. 4 to 7, the pulley 62 is formed in a substantially cylindrical shape as a whole and is rotatably supported by a fixed shaft 601 formed in the housing part 60a. An operating cord 631 formed in a string shape is connected to the outer periphery of the pulley 62 so as to be windable and unwindable. A torsion spring 621 is provided inside the pulley 62. As shown in FIG. 6, one end of the torsion spring 621 is connected to the pulley 62 and the other end is connected to the fixed shaft 601, constantly applying an urging force in the winding direction in which the operating cord 631 is wound to the pulley 62. Thus, when the operator pulls down the operating cord 631 by a predetermined amount or more, as shown in FIG. 7, the operating cord 631 is unwound from the pulley 62 and the pulley 62 rotates, causing the torsion spring 621 to contract in diameter. After that, when the operator releases the hand or the like to release the pulling down of the operating cord 631, the pulley 62 rotates in the reverse direction by the restoring force of the torsion spring 621, and the operating cord 631 is wound up.

[0024] In the following description, regarding the rotation direction around the first axis, the rotation direction in which the operation code 631 is unwound from the pulley 62 (counterclockwise in FIGS. 6 and 7) is referred to as the unwinding direction, and the rotation direction in which the pulley 62 winds up the operation code 631 is referred to as the winding direction (clockwise in FIGS. 6 and 7).

[0025] (Configuration of the operation unit) The configuration of the operation unit according to the first embodiment will be described with reference to FIGS. 1 and 4.

[0026] As shown in FIG. 1, the operation unit 63 includes an operation code 631, a hollow cylindrical switching operation unit 632, a hollow cylindrical operation rod 633, and a cord stopper 635. At the lower end of the operation rod 633, a grip portion 634 formed in a hollow cylindrical shape for the operator to grip is formed, and the cord stopper 635 is provided at the lower end thereof. As shown in FIG. 4, one end of the operation code 631 is connected to the pulley 62, the other end hangs down from the pulley 62, is inserted into the switching operation unit 632 and the operation rod 633, and is connected to the cord stopper 635. Although the operation code 631 is biased upward by the biasing force of the spring 621, since the cord stopper 635 abuts against the lower end of the grip portion 634, further winding of the operation code 631 is prevented. When the operator performs an operation of pulling the cord stopper 635 away from the grip portion 634, the operation code 631 is unwound from the pulley 62 and the pulley 62 is rotated. Also, when the hand is released after pulling down by a predetermined amount or more, the operation code 631 is wound up by the pulley 62, and the cord stopper 635 and the grip portion 634 come into contact with each other again.

[0027] The switching operation unit 632 is supported by the housing parts 60a and 60b at its upper end so as to be rotatable around the axis. At different positions in the circumferential direction on the outer periphery at the upper end of the switching operation unit 632, two engaging parts 632E protruding in the radially outward direction are formed (see FIG. 13). According to such a switching operation unit 632, as will be described in detail later, the switching interlocking mechanism 69 is operated in response to the switching operation by the operator. Further, as shown in FIG. 3, the switching operation unit 632 is provided with a substantially C-shaped torque spring 639 that fastens the switching operation unit 632 in a state of being fixed to the housing 60. Thereby, when the operator tries to grip and rotate the grip part 634, a torque of a predetermined amount or more is required, so that the rotation operation can be performed while obtaining an appropriate operation feeling.

[0028] (Configuration of the connection mechanism) The connection mechanism according to the first embodiment will be described with reference to FIGS. 3 to 5 and FIG. 8. FIG. 8 is a bottom view showing the configuration of the connection mechanism according to the present embodiment.

[0029] The connection mechanism is a mechanism that transmits the rotational force by the pulley 62 to either the first drive shaft 201a or the second drive shaft 201b, and is composed of a first output shaft 61a, a second output shaft 61b, a transmission shaft 65, a connection member 66, a first receiving member 67a, a second receiving member 67b, an input gear 68a, an output gear 68b, and an intermediate gear 68c.

[0030] As shown in FIG. 3, the transmission shaft 65 is a long member formed to extend in the left-right direction, and is rotatably supported by the housing 60 so that its axis is concentric with the first axis. The input gear 68a is inserted through the transmission shaft 65 so as to be relatively rotatable, the pulley 62 is integrally rotatably connected to the right end of the transmission shaft 65, and the first output shaft 61a is relatively rotatably connected to the left end of the transmission shaft 65.

[0031] As shown in FIGS. 4 and 5, the first output shaft 61a is a long member formed to extend in the left-right direction, and is rotatably supported by the housing 60 and the transmission shaft 65 so that its axis is concentric with the first axis. A first drive shaft 201a is integrally and rotatably connected to the inner side (left side in FIGS. 4 and 5) of the first output shaft 61a in the left-right direction.

[0032] A first receiving member 67a is integrally formed on the outer side (right side in FIGS. 4 and 5) of the first output shaft 61a in the left-right direction. The first receiving member 67a is formed in a substantially disk shape that protrudes radially outward over the entire circumference with respect to the first output shaft 61a. A plurality of engaging teeth 671 are formed on the outer surface of the first receiving member 67a in the left-right direction at positions different from each other in the circumferential direction.

[0033] As shown in FIGS. 4 and 5, the second output shaft 61b is a long member formed to extend in the left-right direction, and is rotatably supported by the housing 60 so that its axis is concentric with the second axis. A second drive shaft 201b is integrally and rotatably connected to the inner side (left side in FIGS. 4 and 5) of the second output shaft 61b in the left-right direction.

[0034] As shown in FIGS. 3 to 5, the input gear 68a is a spur gear provided to rotate relative to the transmission shaft 65. A second receiving member 67b is integrally formed on the inner side (left side in FIGS. 4 and 5) of the input gear 68a in the left-right direction. The second receiving member 67b is formed in a substantially disk shape that protrudes radially outward over the entire circumference with respect to the transmission shaft 65. A plurality of engaging teeth 671 are formed on the inner surface of the second receiving member 67b in the left-right direction at positions different from each other in the circumferential direction.

[0035] As shown in FIGS. 3 to 5, the output gear 68b is a spur gear provided to rotate integrally with the second output shaft 61b. The intermediate gear 68c is rotatably supported by the housing 60 about an axis facing the left-right direction, and is a spur gear provided to mesh with the input gear 68a and the output gear 68b. When a rotational driving force is input to the input gear 68a, the output gear 68b can output a rotational driving force in the same direction as the input gear 68a via the intermediate gear 68c via the second output shaft 61b.

[0036] (Connecting member) The configuration of the connecting member according to the first embodiment will be described with reference to FIGS. 3, 8 to 11. FIG. 9 is a cross-sectional view taken along line B-B of FIG. 8. FIGS. 10 and 11 are perspective views showing the configuration of the connecting member. Note that FIG. 10 shows the connecting member with the first transmission member and the cylindrical cam removed, and FIG. 11 shows the connecting member with the first transmission member removed.

[0037] The connecting member 66 is a member provided so as to be axially movable with respect to the transmission shaft 65, and by being connected to either the first receiving member 67a or the second receiving member 67b, the rotational force of the transmission shaft 65 is transmitted to either the first output shaft 61a or the second output shaft 61b. As shown in FIGS. 3, 8 to 11, the connecting member 66 includes a cylindrical cam 661, a cylindrical member 662, a clutch spring 663, a first transmission member 664, and a second transmission member 665.

[0038] The first transmission member 664 and the second transmission member 665 are respectively provided corresponding to the first receiving member 67a and the second receiving member 67b, and both have a disk-shaped portion through which the transmission shaft 65 is inserted. The connecting member 66 is formed in a substantially cylindrical shape as a whole, and the first transmission member 664 and the second transmission member 665 respectively form the inner side in the left-right direction (the left side in FIG. 8) and the outer side in the left-right direction (the right side in FIG. 8) of the side surface of the connecting member 66.

[0039] As shown in FIG. 8, a plurality of engaging teeth 664E are formed on the inner side surface in the left-right direction of the disk-shaped portion of the first transmission member 664 at positions different from each other in the circumferential direction. The plurality of engaging teeth 664E are provided corresponding to the plurality of engaging teeth 671 of the first receiving member 67a. Specifically, each of the plurality of engaging teeth 664E is formed so as to be engageable with each of the plurality of engaging teeth 671 of the first receiving member 67a in the rotational direction of the transmission shaft 65.

[0040] On the left and right outward-facing surfaces of the disk-shaped portion of the second transmission member 665, a plurality of engaging teeth 665E are formed at positions different from each other in the circumferential direction. The plurality of engaging teeth 665E are provided corresponding to the plurality of engaging teeth 671 of the second receiving member 67b. Specifically, each of the plurality of engaging teeth 665E is formed so as to be engageable with each of the plurality of engaging teeth 671 of the second receiving member 67b in the rotational direction of the transmission shaft 65.

[0041] As shown in FIG. 3, the first transmission member 664 has a cylindrical portion formed on the left and right outward sides of its disk-shaped portion. As shown in FIGS. 9 to 11, a plurality of protruding portions 65P protruding radially outward are formed on the outer periphery of the transmission shaft 65 over a predetermined distance in the axial direction. The cylindrical portion of the first transmission member 664 is formed so as to be insertable through the transmission shaft 65 and its inner peripheral shape fits the plurality of protruding portions 65P. Thereby, the first transmission member 664 is provided so as to be integrally rotatable and axially movable with respect to the transmission shaft 65.

[0042] As shown in FIG. 3, a plurality of protruding pieces protruding inward in the left and right directions are formed on the second transmission member 665. As shown in FIGS. 3 and 9, a plurality of grooves extending in the left and right directions and into which the protruding pieces of the second transmission member 665 can be fitted are formed on the outer periphery of the cylindrical portion of the first transmission member 664. By fitting the plurality of protruding pieces of the second transmission member 665 into the plurality of grooves formed in the cylindrical portion of the first transmission member 664, the first transmission member 664 and the second transmission member 665 are connected so as to be integrally rotatable. At this time, a cylindrical portion sandwiched between the disk-shaped portions of the first transmission member 664 and the second transmission member 665 is formed by the cylindrical portion and the plurality of protruding pieces.

[0043] As shown in FIGS. 3, 10, and 11, the cylindrical member 662 is a member formed in a substantially cylindrical shape through which a cylindrical portion formed by a first transmission member 664 and a second transmission member 665 can be inserted. As shown in FIGS. 10 and 11, a notch 662N is formed at an inner end portion of the cylindrical member 662 in the left-right direction, that is, at an end portion on the side where the first transmission member 664 is located when the cylindrical portion is inserted. As shown in FIG. 9, a protruding portion 664P provided corresponding to the notch 662N is formed on the first transmission member 664. When the protruding portion 664P fits into the notch 662N when the first transmission member 664, the second transmission member 665, and the cylindrical member 662 are assembled, the cylindrical member 662 is provided so as to integrally rotate with respect to the first transmission member 664 and the second transmission member 665.

[0044] As shown in FIG. 10, the clutch spring 663 is a linear elastic member wound so as to fasten the peripheral wall of the cylindrical member 662, and both end portions thereof are bent so as to face the radially outer direction. As shown in FIGS. 8, 9, and 11, the cylindrical cam 661 is a member formed in a substantially cylindrical shape through which the cylindrical member 662 around which the clutch spring 663 is wound can be inserted, and is provided so as to be relatively rotatable with respect to the cylindrical member 662. As shown in FIG. 11, two notches 661N are formed in the cylindrical cam 661 so as to be circumferentially engageable with each of both end portions of the clutch spring 663.

[0045] In a state where the clutch spring 663 fastens the cylindrical member 662, by engaging each of both end portions of the clutch spring 663 with the two notches 661N, the rotational force of the cylindrical member 662 is transmitted to the cylindrical cam 661 via the clutch spring 663, and the cylindrical member 662 rotates integrally. Each of the two notches 661N is formed so as to engage with the end portion in the circumferential direction so as to relax the clutch spring 663 when the cylindrical cam 661 integrally rotates with respect to the cylindrical member 662 by a predetermined angle range or more. In a state where the clutch spring 663 is relaxed, the fastening of the cylindrical member 662 by the clutch spring 663 is released, and the cylindrical cam 661 rotates relative to the cylindrical member 662 together with the clutch spring 663.

[0046] On the outer periphery of the cylindrical cam 661, as shown in FIG. 8, a cam groove CG is formed over a predetermined distance range in the circumferential direction. The cam groove CG is a groove formed so that a cam member 693C (see FIG. 12), which will be described later, slides relative to the cylindrical cam 661. The cam groove CG has a non-connected path CG0 extending in the circumferential direction, and a first connected path CG1 and a second connected path CG2 connected to the non-connected path CG0. The first connected path CG1 is formed so as to incline outward in the left-right direction (right side in FIG. 8) with respect to the non-connected path CG0 and extend in the unwinding direction (upper side in FIG. 8). The second connected path CG2 is formed so as to incline inward in the left-right direction (left side in FIG. 8) with respect to the non-connected path CG0 and extend in the unwinding direction. The unwinding direction end of the non-connected path CG0, the winding direction end of the first connected path CG1, and the winding direction end of the second connected path CG2 are connected to each other, and the cam groove CG is formed in a substantially Y shape as a whole.

[0047] The cam member 693C is movably provided as will be described in detail later, but is provided immovably in the circumferential direction of the cylindrical cam 661. The two notches 661N of the cylindrical cam 661 are formed corresponding to the distance range of the cam groove CG in the circumferential direction. Specifically, one of the two notches 661N is formed at a position that restricts the rotation of the cylindrical cam 661 in the unwinding direction when the cam member 693C reaches the unwinding direction side ends of the first connected path CG1 and the second connected path CG2. The other of the two notches 661N is formed at a position that restricts the rotation of the cylindrical cam 661 in the winding direction when the cam member 693C reaches the winding direction side end of the non-connected path CG0.

[0048] According to the connecting member 66 configured as described above, as will be described later, in response to the operation of the cam member 693C, the connecting member 66 is moved in the axial direction of the transmission shaft 65, whereby the connecting mechanism can be switched to the first connection state, the second connection state, and the non-connection state. In the first connection state, the first transmission member 664 and the first receiving member 67a are engaged in the rotational direction and connected so as to be able to transmit the rotational force. In the second connection state, the second transmission member 665 and the second receiving member 67b are engaged in the rotational direction and connected so as to be able to transmit the rotational force. In the non-connection state, the first transmission member 664 and the first receiving member 67a are not connected so as to be able to transmit the rotational force, and the second transmission member 665 and the second receiving member 67b are not connected so as to be able to transmit the rotational force.

[0049] (Configuration of the switching interlocking mechanism) The configuration of the switching interlocking mechanism according to the first embodiment will be described with reference to FIGS. 12 to 16. FIG. 12 is an exploded perspective view showing the configuration of the switching interlocking mechanism. FIGS. 13 and 14 are upper perspective views and lower perspective views showing the configuration of the switching interlocking mechanism, respectively. FIGS. 15 and 16 are plan views showing the switching interlocking mechanism in the first connection state and the second connection state, respectively.

[0050] As shown in FIGS. 12 to 14, the switching interlocking mechanism 69 includes a switching transmission portion 691, a switching conversion portion 692, a switching guide portion 693, a retaining ring 694, and an elastic restricting portion 695. The switching transmission portion 691 moves in the left-right direction in response to a switching operation on the switching operation portion 632, and transmits the linear motion by the switching operation to the switching conversion portion 692. The switching conversion portion 692 converts the linear motion transmitted by the switching transmission portion 691 into a rotational motion. The switching guide portion 693 guides the connecting member 66 in the left-right direction so as to switch the connecting mechanism to the first connection state or the second connection state by being rotated by the switching conversion portion 692. The retaining ring 694 is used to attach the switching guide portion 693 to the switching conversion portion 692.

[0051] As shown in FIGS. 12 to 14, the switching transmission unit 691 is formed in a substantially plate shape extending in the left-right direction, positioned below the second output shaft 61b (see FIG. 5), and supported by the housing 60 so as to be movable in the left-right direction with the in-plane direction of its plate surface facing horizontally. An engaged portion 691E and a connecting hole 691H are formed in the switching transmission unit 691. The engaged portion 691E is formed at the front end portion on the outer side in the left-right direction (the right side in FIG. 12) of the switching transmission unit 691, and protrudes forward so as to be engaged with each of the two engaging portions 632E of the switching operation unit 632. The connecting hole 691H is a long hole-shaped through hole formed on the inner side in the left-right direction (the left side in FIG. 12) of the switching transmission unit 691 and extending in the front-rear direction.

[0052] As shown in FIGS. 12 to 14, the switching conversion unit 692 is a member formed in a substantially plate shape extending in one direction orthogonal to the vertical direction, and one end portion has a wider width than the other portion. The switching conversion unit 692 is supported by the housing 60 so as to be rotatable about an axis facing the vertical direction with the in-plane direction of its plate surface facing horizontally. The rotation angle range of the switching conversion unit 692 is limited by the housing 60 so that one end portion formed with a wide width is always located rearward. A connecting hole 692H, an engaging portion 692E, a rotating shaft 692A, and a connecting pin 692P are formed in the switching conversion unit 692.

[0053] The connecting hole 692H is a through hole formed to extend in the width direction at one end (hereinafter referred to as the rear end) portion of the switching conversion unit 692 formed with a wide width. The engaging portion 692E is formed in a substantially cylindrical shape protruding upward on the other end (hereinafter referred to as the front end) side with respect to the connecting hole 692H. The rotating shaft 692A is formed in a substantially cylindrical shape protruding upward on the front end side with respect to the engaging portion 692E, and is pivotally supported by the housing 60 so that its axial direction faces the vertical direction. The connecting pin 692P is formed in a substantially cylindrical shape protruding upward at the front end portion, and is inserted into the connecting hole 691H of the switching transmission unit 691.

[0054] As shown in FIGS. 12 to 14, the inside 693 of the switching case is formed in a substantially plate shape forming a substantially rectangle, and is rotatably supported by the switching conversion unit 692 and the housing 60 around an axis facing the vertical direction with the in-plane direction of its plate surface facing horizontally. The rotation angle range of the inside 693 of the switching case is always restricted so that one end is positioned forward and the other end is positioned rearward. The inside 693 of the switching case is formed with a cam member 693C, two inside case parts 693G, an engaged part 693E, and a connecting pin 693P (see FIG. 14). In the following description, for convenience, one end positioned forward in the inside 693 of the switching case is referred to as the front end, and the other end positioned rearward is referred to as the rear end.

[0055] The cam member 693C protrudes upward on the upper surface of the inside 693 of the switching case and is formed in a substantially water droplet shape that tapers toward the front end side when viewed from above. The two inside case parts 693G are provided on the upper surface of the inside 693 of the switching case so as to sandwich the cam member 693C therebetween, and are each formed in a substantially fan shape protruding upward in plan view. The housing part 60b is formed with two guide parts 60G (see FIGS. 3, 15, and 16) corresponding to the two inside case parts 693G. The two inside case parts 693G are fitted into and guided by the two guide parts 60G formed as grooves. Thereby, the inside 693 of the switching case is supported by the housing 60 so as to be rotatable around a virtual axis facing the vertical direction so that the direction of the front end part of the cam member 693C changes. Further, the housing part 60b is formed with a rotation restriction part 60L which is a hole formed in a substantially rectangular shape in plan view into which the cam member 693C can be fitted (see FIGS. 15 and 16). The rotation angle range of the inside 693 of the switching case is restricted by the two guide parts 60G and the rotation restriction part 60L as described above.

[0056] The engaged part 693E is formed as a notch at the front end of the switching plan inside part 693, which enables the engagement part 692E of the switching conversion part 692 to engage in the left-right direction when the switching plan inside part 693 is assembled to the switching conversion part 692. The connecting pin 693P is formed in a substantially cylindrical shape protruding downward on the bottom surface of the switching plan inside part 693. The connecting pin 693P is formed so as to be slidably fitted into the connecting hole 692H of the switching conversion part 692 when the switching plan inside part 693 is assembled to the switching conversion part 692.

[0057] The retaining ring 694 is a plate-like member formed in a substantially C shape in plan view. A groove is formed over the entire circumference on the side surface of the rotating shaft 692A of the switching conversion part 692, whereby a small-diameter part with a smaller diameter than other parts is formed in a part of the rotating shaft 692A. The retaining ring 694 is formed so as to be inserted into the groove of the rotating shaft 692A and then fitted into the small-diameter part of the rotating shaft 692A after the switching plan inside part 693 is assembled to the switching conversion part 692. The retaining ring 694 is formed so as to overlap a part of each of the engagement part 692E and the switching plan inside part 693 in the vertical direction when fitted into the small-diameter part of the rotating shaft 692A, thereby preventing the switching plan inside part 693 from falling off the switching conversion part 692.

[0058] As shown in FIGS. 3, 13, and 14, the elastic regulation part 695 is formed by bending an elastic member formed in a long plate shape. The elastic regulation part 695 is bent so that both end parts are substantially orthogonal to the plate surface, and a protruding part that protrudes in the direction opposite to the bending direction of both end parts is formed at the central part. As shown in FIG. 13, the elastic regulation part 695 is fixedly provided in the housing 60 so that the protruding part faces rearward. As will be described in detail later, the connection pin 692P of the switching conversion part 692 is provided so as to be moved in the left-right direction by the switching transmission part 691. The elastic regulation part 695 is a so-called leaf spring in which the protruding part is positioned on the movement path of the connection pin 692P to regulate the movement of the switching transmission part 691, and the connection pin 692P can flex so as to overcome the protruding part against the elastic force of the elastic regulation part 695. According to the elastic regulation part 695, when the connection pin 692P overcomes the protruding part of the elastic regulation part 695, a clicking feeling can be given to the operator, and by extension, the operator can grasp the operation state.

[0059] (Operation of the switching interlocking mechanism) The operation of the switching interlocking mechanism will be described with reference to FIGS. 15 to 17. FIG. 17 is a bottom view for explaining the connection between the switching interlocking mechanism and the connecting member.

[0060] As shown in FIG. 15, when the switching operation unit 632 is rotated counterclockwise in plan view by a rotational operation on the operation unit 63, one of the two engaging portions 632E of the switching operation unit 632 engages with the engaged portion 691E of the switching transmission unit 691 from the outside in the left-right direction (right side in FIG. 15), and the switching transmission unit 691 is moved inward in the left-right direction (left side in FIG. 15). When the switching transmission unit 691 is moved inward in the left-right direction, the connecting pin 692P of the switching conversion unit 692 gets over the elastic restricting portion 695 and moves inward in the left-right direction, and the switching conversion unit 692 is rotated clockwise in plan view around its rotation axis 692A. When the switching conversion unit 692 is rotated clockwise, the engaging portion 692E of the switching conversion unit 692 is moved outward in the left-right direction. When the engaging portion 692E is moved outward in the left-right direction, the front end portion of the switching guide unit 693 in which the engaged portion 693E engaged with the engaging portion 692E is formed is pressed outward in the left-right direction, the switching guide unit 693 is rotated counterclockwise as viewed from above, and the tip portion of the cam member 693C of the switching guide unit 693 inclines toward the outside in the left-right direction.

[0061] As shown in FIG. 16, when the switching operation unit 632 is rotated clockwise in plan view by a rotational operation on the operation unit 63, the other of the two engaging portions 632E of the switching operation unit 632 engages with the engaged portion 691E of the switching transmission unit 691 from the inside in the left-right direction (left side in FIG. 16), and the switching transmission unit 691 is moved outward in the left-right direction (right side in FIG. 16). When the switching transmission unit 691 is moved outward in the left-right direction, the connecting pin 692P of the switching conversion unit 692 gets over the elastic restricting portion 695 and moves outward in the left-right direction, and the switching conversion unit 692 is rotated counterclockwise in plan view around its rotation axis 692A. When the switching conversion unit 692 is rotated counterclockwise, the engaging portion 692E of the switching conversion unit 692 is moved inward in the left-right direction. When the engaging portion 692E is moved inward in the left-right direction, the front end portion of the switching guide unit 693 in which the engaged portion 693E engaged with the engaging portion 692E is formed is pressed inward in the left-right direction, the switching guide unit 693 is rotated clockwise as viewed from above, and the tip portion of the cam member 693C of the switching guide unit 693 inclines toward the inside in the left-right direction.

[0062] The connecting member 66 and the switching guide 693 are provided on the housing 60 such that the cam member 693C fits into the cam groove CG of the cylindrical cam 661. In response to the rotational operation of the operating unit 63, the direction of the tip of the cam member 693C is changed in the left - right direction, and as will be described in detail later, when the connecting member 66 is rotated in the winding - up / down direction, the path in the cam groove CG into which the cam member 693C fits is changed.

[0063] (Operation of Shifting to the First Driving State) The operation of shifting to the first driving state will be described with reference to FIGS. 18 to 24. FIG. 18 is a plan view showing the operating device in the first connected state. FIG. 19 is a bottom view showing the cam member with the tip directed toward the first connection path. FIG. 20 is a bottom view showing the connecting member when shifting to the first connected state. FIG. 21 is a bottom view showing the connecting member when the rotational force is transmitted in the first connected state. FIG. 22 is a bottom view showing the connecting member when shifting from the first connected state to the unconnected state. FIG. 23 is a diagram showing the relative position change of the cam member with respect to the cam groove related to the shift to the first connected state. FIG. 24 is a diagram showing the shielding device in which the bottom rail is lifted.

[0064] As shown in FIG. 24(a), when a counter - clockwise rotational operation is performed on the operating unit 63 in a plan view, and as shown in FIG. 24(b), when the cord stopper 635 is pulled down by the operator and the operating cord 631 is pulled, the connecting member 66 is moved inward in the left - right direction (left side in FIG. 18) as shown in FIG. 18, and the connecting mechanism enters the first connected state. In the first connected state, since the rotation of the pulley 62 is transmitted to the first output shaft 61a connected to the first drive shaft 201a, the shielding device 1 enters the first driving state in which the first drive shaft 201a is rotationally driven.

[0065] When the connecting mechanism shifts to the first connected state, first, as shown in FIG. 19, the switching case portion 693 is rotated such that the tip of the cam member 693C is tilted outward in the left-right direction (right side in FIG. 19). When the pulley 62 is rotated in the winding / unwinding direction in this state, as shown in FIGS. 23(a) and (b), the relative position between the cam member 693C and the cam groove CG changes such that the cam member 693C, which is fixedly provided in the circumferential direction of the connecting member 66, enters the first connection path CG1, and as shown in FIG. 23(c), the cam member 693C is positioned at the winding / unwinding direction end of the first connection path CG1. In the state shown in FIG. 23(b), the end of the partition wall separating the first connection path CG1 and the second connection path CG2 abuts against the inner side surface in the left-right direction (left side in FIG. 23) of the cam member 693C, and the cam member 693C is guided to enter the first connection path CG1.

[0066] Since the cam member 693C is fixedly provided in the left-right direction, when the cam member 693C is positioned in the first connection path CG1, as shown in FIG. 20, the connecting member 66 is moved inward in the left-right direction (left side in FIG. 20), and the connecting mechanism is switched to the first connected state.

[0067] Furthermore, when the pulley 62 is rotated in the winding / unwinding direction, as shown in FIG. 21, other components in the connecting member 66 rotate relative to the cylindrical cam 661 and the clutch spring 663, and the first output shaft 61a is rotated in the winding / unwinding direction via the transmission shaft 65, the connecting member 66, and the first receiving member 67a, and the shielding device 1 enters the first driving state. In the first driving state, two first winding drums 202a to which the rotational force is transmitted from the first driving shaft 201a wind up two lifting cords 32 connected thereto, respectively, whereby the bottom rail 31 is lifted as shown in FIG. 24(b). (1st action) 。

[0068] When the cord stopper 635 pulled down by the operator is released, the pulley 62 is rotated in the winding direction by the restoring force of the spring 621, and as shown in FIG. 24(c), the operating cord 631 is wound around the pulley 62 until the cord stopper 635 abuts against the lower end of the gripping portion 634. At this time, the connecting member 66 is rotated in the winding direction, and as shown in FIG. 23(d), the relative position between the cam member 693C and the cam groove CG changes so that the cam member 693C enters the non-connecting path CG0, and as shown in FIG. 23(e), the cam member 693C is positioned at the winding direction end of the non-connecting path CG0.

[0069] When the cam member 693C is positioned in the non-connecting path CG0, as shown in FIG. 22, the connecting member 66 is moved outward in the left-right direction (right side in FIG. 22), and the connecting mechanism is switched to the non-connected state. Further, when the pulley 62 is rotated in the winding direction, other components in the connecting member 66 rotate relative to the cylindrical cam 661 and the clutch spring 663, but since the connecting mechanism is in the non-connected state, the rotation is not transmitted to either of the first and second receiving members 67a, 67b.

[0070] (Operation of shifting to the second driving state) The operation of shifting to the second driving state will be described with reference to FIGS. 25 to 31. FIG. 25 is a plan view showing the operating device in the second connected state. FIG. 26 is a bottom view showing the cam member with the tip directed toward the second connecting path. FIG. 27 is a bottom view showing the connecting member when shifting to the second connected state. FIG. 28 is a bottom view showing the connecting member when the rotational force is transmitted in the second connected state. FIG. 29 is a bottom view showing the connecting member when shifting from the second connected state to the non-connected state. FIG. 30 is a view showing the relative position change of the cam member with respect to the cam groove related to the shift to the second connected state. FIG. 31 is a view showing the shielding device in which the intermediate bar is lifted.

[0071] As shown in Fig. 31(a), when a clockwise rotation operation is performed on the operation unit 63 in a plan view, and as shown in Fig. 31(b), when the cord stopper 635 is pulled down by the operator and the operation cord 631 is pulled, as shown in Fig. 25, the connecting member 66 moves outward in the left - right direction (right side in Fig. 25), and the connecting mechanism enters the second connection state. In the second connection state, since the rotation of the pulley 62 is transmitted to the second output shaft 61b connected to the second drive shaft 201b, the shielding device 1 enters the second drive state in which the second drive shaft 201b is rotationally driven.

[0072] When the connecting mechanism shifts to the second connection state, first, as shown in Fig. 26, the switching guide part 693 is rotated so that the tip of the cam member 693C is tilted inward in the left - right direction (left side in Fig. 26). When the pulley 62 is rotated in the winding - unwinding direction in this state, as shown in Figs. 30(a) and (b), the relative position between the cam member 693C and the cam groove CG changes such that the cam member 693C, which is provided immovably in the circumferential direction of the connecting member 66, enters the second connection path CG2, and as shown in Fig. 30(c), the cam member 693C is positioned at the winding - unwinding direction end of the second connection path CG2. In the state shown in Fig. 30(b), the end of the partition wall that separates the first connection path CG1 and the second connection path CG2 abuts against the outer side surface in the left - right direction (right side in Fig. 30) of the cam member 693C, and the cam member 693C is guided to enter the second connection path CG2.

[0073] Since the cam member 693C is provided immovably in the left - right direction, when the cam member 693C is positioned in the second connection path CG2, as shown in Fig. 27, the connecting member 66 moves outward in the left - right direction (right side in Fig. 27), and the connecting mechanism is switched to the second connection state.

[0074] Furthermore, when the pulley 62 is rotated in the unwinding direction, as shown in FIG. 28, other components of the connecting member 66 rotate relative to the cylindrical cam 661 and the clutch spring 663, and the second output shaft 61b is rotated in the unwinding direction via the transmission shaft 65, the connecting member 66, and the second receiving member 67b, and the shielding device 1 enters the second driving state. In the second driving state, the two second winding drums 202b to which the rotational force is transmitted from the second driving shaft 201b wind up the two dimming cords 42 connected thereto, respectively, whereby the intermediate bar 41 is raised as shown in FIG. 31(b). (2nd action) 。

[0075] When the cord stopper 635 pulled down by the operator is released, the pulley 62 is rotated in the winding direction by the restoring force of the spring 621, and the operating cord 631 is wound around the pulley 62 until the cord stopper 635 abuts against the lower end of the gripping portion 634 as shown in FIG. 31(c). At this time, the connecting member 66 is rotated in the winding direction, and as shown in FIG. 30(d), the relative position between the cam member 693C and the cam groove CG changes so that the cam member 693C enters the non-connecting path CG0, and as shown in FIG. 30(e), the cam member 693C is positioned at the winding direction end of the non-connecting path CG0.

[0076] When the cam member 693C is positioned in the non-connecting path CG0, as shown in FIG. 29, the connecting member 66 is moved inward in the left-right direction (left side in FIG. 29), and the connecting mechanism is switched to the non-connected state. Further, when the pulley 62 is rotated in the winding direction, other components of the connecting member 66 rotate relative to the cylindrical cam 661 and the clutch spring 663, but since the connecting mechanism is in the non-connected state, the rotation is not transmitted to either of the first and second receiving members 67a and 67b.

[0077] (Effect of the operating device) The effect of the operating device according to the first embodiment will be described.

[0078] According to the operating device 6 according to the first embodiment described above, the connecting member 66 and the switching interlocking mechanism 69, specifically the cam member 693C, cooperate to convert the rotational motion of the connecting member 66 into a linear motion directed along the axial direction of the transmission shaft 65, thereby easily switching the drive shaft that transmits the rotational force of the pulley 62 by the rotational force of the connecting member 66. Subsequently, the operability related to the switching of the drive target can be improved.

[0079] Moreover, by moving the connecting member 66 in the axial direction of the transmission shaft 65 using the cam member 693C and the cylindrical cam 661 in which the cam groove CG is formed, the rotation and axial movement of the connecting member 66 can be interlocked as intended by the designer of the operating device 6. Subsequently, the axial movement of the connecting member 66 can be made smooth.

[0080] In addition, when the pulley 62 is rotated in the winding direction by the biasing force of the spring 621 and a non-connecting path CG0 is formed in the cam groove CG, the transmission of the rotational force from the first drive shaft 201a and the second drive shaft 201b to the pulley 62 can be prevented with a simpler configuration.

[0081] <Second Embodiment> (Overall Configuration) The overall configuration of the shielding device according to the second embodiment will be described with reference to FIGS. 32 and 33. FIG. 32 is a front view showing the configuration of the shielding device according to the present embodiment, and FIG. 33 is a schematic plan perspective view thereof. Note that FIG. 32 shows the shielding device in a state where the bottom rail is lowered, and only the inside of its head box is shown.

[0082] As shown in FIG. 32, the shielding device 1A according to the present embodiment is different from the shielding device 1 according to the first embodiment in that the intermediate bar 41, the two dimming cords 42, and the screen 43 are not provided. Further, the shielding device 1A is different from the shielding device 1 in that it includes a head box 2A instead of the head box 2, an operating device 6A instead of the operating device 6, and an operating unit 73 instead of the operating unit 63.

[0083] As shown in FIG. 33, the head box 2A is different from the head box 2 in that it is not provided with two second winding drums 202b, a second brake device 203b, a second stopper device 204b, and an interlocking gear 205 as components housed inside.

[0084] The operation unit 73 includes a grip portion 731, a cord stopper 732, and an operation cord 631. The grip portion 731 is a member formed in a shape that can be easily gripped by the operator when performing a pulling operation on the operation cord 631, and is connected to the lower end of the operation cord 631. The cord stopper 732 is a member formed to have a size that engages with a lead-out port (not shown) of the operation cord 631 provided in the operation device 6A, and is attached to an intermediate portion of the operation cord 631. According to the cord stopper 732, winding of the operation cord 631 by more than a certain amount by the pulley 62 is restricted.

[0085] (Configuration of the operating device) The configuration of the operating device according to the second embodiment will be described with reference to FIGS. 34 and 35. FIG. 34 is a bottom view showing the configuration of the operating device according to this embodiment. FIG. 35 is a plan view showing the operating device when shifting to the connected state. Note that in FIG. 34, an operating device with the pulley omitted is shown.

[0086] As shown in FIGS. 34 and 35, the operating device 6A according to this embodiment is different from the operating device 6 in that as a connection mechanism, it includes a connection member 66A instead of the connection member 66, and in that the second output shaft 61b, the second receiving member 67b, the input gear 68a, the output gear 68b, and the intermediate gear 68c are not provided, and also in that it includes a cam member 69C instead of the switching interlocking mechanism 69.

[0087] The connection member 66A is different from the connection member 66 in that the second transmission member 665 is not provided and in that it includes a cylindrical cam 661A instead of the cylindrical cam 661. The cylindrical cam 661A is different from the cylindrical cam 661 in that a cam groove CGA is formed instead of the cam groove CG. The cam groove CGA is different from the cam groove CG in that the second connection path CG2 is not provided.

[0088] The cam member 69C corresponds to the cam member 693C provided on the switching guide portion 693 of the switching linkage mechanism 69 according to the first embodiment. The cam member 69C is formed in substantially the same shape as the cam member 693C, but is different from the cam member 693C in that it is provided on the housing 60 so as not to be rotatable with the tip portion inclined outward in the left-right direction.

[0089] When the grip portion 731 is pulled down by the operator and the pulley 62 rotates in the unwinding direction, the connecting member 66A is rotated so that the cam member 69C enters the first connection path CG1. As a result, the connecting member 66A is moved inward in the left-right direction (left side in FIG. 35), and the operating device 6A is in a connected state in which the first transmission member 664 and the first receiving member 67a are connected so as to be able to transmit a rotational force, and the shielding device 1A is in a driving state in which the first driving shaft 201a is rotationally driven via the first output shaft 61a.

[0090] When the operator releases the grip portion 731 and the pulley 62 is rotated in the winding direction by the restoring force of the spring 621, the operating cord 631 is wound around the pulley 62 until the cord stopper 732 abuts against the outlet of the operating device 6A. At this time, the connecting member 66A is rotated so that the cam member 69C enters the non-connection path CG0. As a result, the connecting member 66A is moved outward in the left-right direction (right side in FIG. 35), and the connecting mechanism is in a non-connected state. Further, when the pulley 62 is rotated in the winding direction, other components of the connecting member 66A rotate relative to the cylindrical cam 661A, but since the connecting mechanism is in a non-connected state, the rotation of the connecting member 66A is not transmitted to the first receiving member 67a.

[0091] (Effect of the operating device) The effect of the operating device according to the second embodiment will be described.

[0092] According to the operating device 6A, in the shielding device 1A where there is only one drive system driven by the rotation of the pulley 62, when the gripping portion 731 is pulled, it is in a connected state, and when the gripping portion 731 is released, it is in a non-connected state. Therefore, the transmission of the rotational force from the first transmission shaft 201a to the pulley 62 can be prevented with a simpler configuration.

[0093] In the first embodiment described above, 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 the bottom rail 31 and the intermediate bar 41 that move in the vertical direction. However, the moving directions of the first moving member and the second moving member can be in any direction, and the first moving member and the second moving member may be arranged front and back and move in the vertical direction or left and right respectively. Also, the first drive shaft 201a and the second drive shaft 201b may be driven to perform two types of operations related to the opening and closing of the shielding material in the shielding device. For example, for the same shielding material, the shielding device may be driven such that the first drive shaft 201a performs a first operation, and the shielding device may be driven such that the second drive shaft 201b performs a second operation different from the first operation.

[0094] Also, although the rotational driving force of the pulley 62 is selectively transmitted to either the first drive shaft 201a or the second drive shaft 201b by the rotational operation of the switching operation portion 632, it is not limited to this. For example, the switching operation portion 632 may be slid in the vertical or horizontal direction.

[0095] Also, although the pleated screen has been described as an example of the shielding device 1, 1A, the present invention can be applied to shielding devices such as horizontal blinds, vertical blinds, roll screens, honeycomb screens, lift curtains, accordion doors, and other blinds, curtains, or partitions.

[0096] The present invention can be implemented in various other forms without departing from its gist or main features. Therefore, each of the above-described embodiments is merely an example in every respect and should not be construed in a limiting sense. The scope of the present invention is indicated by the claims and is not restricted by the text of the specification in any way. Furthermore, all modifications, various improvements, alternatives, and reforms that fall within the equivalent scope of the claims are all within the scope of the present invention.

Explanation of Reference Numerals

[0097] 1 Shielding device 201a First drive shaft 201b Second drive shaft 31 Bottom rail (first moving member) 41 Intermediate bar (second moving member) 6 Operating device 62 Pulley 63 Operating part 631 Operating cord 65 Transmission shaft 66 Connecting member 67a First receiving member 67b Second receiving member 69 Switching interlocking mechanism 691 Switching transmission part 692 Switching conversion part 693 Switching guide part 695 Elastic restricting part

Claims

1. An operating device for operating a drive shaft that drives a shielding device to perform a first operation for changing a shielding state of the shielding device including at least one or more shielding materials, An operating cord is formed to be windable and unwindable, and is biased by a biasing member to rotate in the winding direction, and a pulley that rotates in the unwinding direction against the biasing force of the biasing member when the operating cord is unwound, A transmission shaft to which a rotational driving force is transmitted from the pulley, A connecting member that is provided to be integrally rotatable with the transmission shaft and is provided to be movable in the axial direction of the transmission shaft, and is connected to a first drive shaft that drives the shielding device so as to be able to transmit the rotational driving force of the transmission shaft when moved from a non-connected position in the axial direction to the first direction side in the axial direction, A switching interlocking part that cooperates with the connecting member to convert the rotational motion of the connecting member into a linear motion, and moves the connecting member from the non-connected position to the first direction when the pulley is rotated in the unwinding direction, and moves the connecting member to the non-connected position when the pulley is rotated in the winding direction An operating device comprising.

2. The connecting member is formed in a substantially cylindrical shape and has a cylindrical cam in which a cam groove, which is a groove extending in the circumferential direction, is formed on the outer peripheral wall, The switching interlocking part is provided to be insertable into the cam groove and has a cam member provided to be immovable in the rotational direction of the connecting member. The operating device according to claim 1.

3. The cam groove has a first connecting path that extends in the unwinding direction while being inclined toward the second direction side, which is the opposite direction of the first direction, and a non-connecting path that extends in the winding direction. The operating device according to claim 2.

4. The connecting member is connected to a second drive shaft that drives the shielding device so as to be able to transmit the rotational force of the transmission shaft to perform a second operation different from the first operation when moved from the non-connected position to the second direction side, which is the opposite direction of the first direction, The switching interlocking part moves the connecting member from the non-connected position to either the first direction side or the second direction side according to a switching operation by an operator. The operating device according to claim 3.

5. The cam groove further has a second connecting path that extends in the unwinding direction while being inclined toward the first direction side. The operating device according to claim 4.

6. The cam member is formed in a shape with a tapered tip, and is provided such that the tip is inclined toward the first direction side or the second direction side according to the switching operation. The operating device according to claim 4 or claim 5.

7. The switching interlocking part includes a switching transmission part provided to be linearly movable according to the switching operation, a switching conversion part that converts the linear motion of the switching transmission part into a rotational motion, and the cam member according to the rotation of the switching conversion part. The operating device according to claim 6, further comprising a switching guide part that rotates the tip so as to be inclined toward the first direction side or the second direction side.

8. When the connecting member is moved in the first direction, the operating device according to any one of claims 1 to 7, further comprising a first receiving member that engages with the connecting member and transmits the rotational force of the connecting member to the first drive shaft.

9. When the connecting member is moved in the second direction, the operating device according to any one of claims 4 to 7, further comprising a second receiving member that engages with the connecting member and transmits the rotational force of the connecting member to the second drive shaft.

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