Operating device, operating method

Abstract

To provide a technology capable of improving operability. [Solution] The operating device for operating the first and second movable members of the shading device is provided with an operating unit 53 that can be switched between a first state in which the first movable member is operated and a second state in which the second movable member is operated.

Description

Technical Field

[0001] This embodiment relates to an operating device for 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. The shielding device shown in this Patent Document 1 is pivotally supported rotatably in a head box, a first drive shaft capable of moving a first moving member, a second drive shaft pivotally supported rotatably in the head box and capable of moving a second moving member, a first pulley capable of rotationally driving the first drive shaft, and a second pulley capable of rotationally driving the second drive shaft. The first pulley is provided so as to be windable and unwindable, and the first shielding material is raised and lowered by operating a first operating cord, and the second pulley is provided so as to be windable and unwindable, and the second shielding material can be raised and lowered by operating a second operating cord.

[0003] According to such a shielding device, since the first pulley and the second pulley can be arranged side by side in the left-right direction, the hanging positions of the first operating cord and the second operating cord can be made different in the left-right direction, and thereby the two types of operating cords for opening and closing the first shielding material and the second shielding material can be hung from the head box in a state where they are easy to distinguish.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, such a shielding device requires two first and second pulleys for rotationally driving the first and second drive shafts, and two operation codes for rotating the first and second pulleys, respectively. Although the hanging positions of the two operation codes can be made different in the left-right direction, depending on the operation method of the operation codes, there is a possibility that the two operation codes may interfere with each other, such as being entangled, so an improvement in operability has been demanded.

[0006] The present invention has been made to solve the above-described problems, and an object thereof is to provide a technique capable of improving operability.

Means for Solving the Problems

[0007] In order to solve the above-described problems, one aspect of the present invention is an operation device for operating first and second moving members of a shielding device, the operation device including an operation unit capable of performing a switching operation for switching the shielding device between a first state of operating the first moving member and a second state of operating the second moving member.

Effects of the Invention

[0008] According to the present invention, the operability of the operation code can be improved.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Mode for Carrying Out the Invention

[0010] Hereinafter, embodiments of 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 including two types of screens that can be raised and lowered as a shielding material will be described as an example. In this embodiment, the indoor side surface when the shielding device is provided 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 description will be made. Also, in this specification and the drawings, components having substantially the same function are denoted by the same reference numerals, and redundant description is omitted.

[0011] (Overall Configuration) First, the overall configuration of the shielding device according to this embodiment will be described. FIG. 1 is a front view showing the configuration of the shielding device according to this embodiment, and FIG. 2 is a schematic plan perspective view thereof. In FIG. 1, a shielding device in a state where the bottom rail has been lowered to the lowest position 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 this 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 operation unit 5.

[0013] The head box 2 is fixed to a window frame (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 stopper device 203a, a first brake device 204a, a second drive shaft 201b, two second winding drums 202b, a second stopper device 203b, a second brake device 204b, and an interlocking gear 205 are accommodated.

[0014] The first drive shaft 201a, the two first winding drums 202a, the first stopper device 203a, and the first brake device 204a constitute a first drive system for raising and lowering the bottom rail 31. Further, the second drive shaft 201b, the two second winding drums 202b, the second stopper device 203b, and the second brake 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 this 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 in the same position as the axis of the second drive shaft 201b in the up - down direction and is located rearward, 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 203a restrains the rotation of the first drive shaft 201a. The second stopper device 203b restrains the rotation of the second drive shaft 201b. The first brake device 204a decelerates the rotation of the first drive shaft 201a. The second brake device 204b decelerates the rotation of the second drive shaft 201b.

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

[0018] As shown in FIG. 2, the operation unit 5 is provided at one of the left and right ends of the head box 2, and in this embodiment, at the right - hand end in the drawing. The operation unit 5 includes a housing 50 formed with an accommodation space inside and composed of three detachable housing parts 50a - 50c (see FIG. 7 etc.), a first output shaft 51a (see FIG. 8) rotatably supported by the housing part 50c, a second output shaft 51b (see FIG. 7) rotatably supported by the housing parts 50b and 50c, and a pulley 52 capable of selectively rotating these output shafts. The first output shaft 51a is integrally and rotatably connected to the first drive shaft 201a so that its axis is concentric with the first axis, and the second output shaft 51b is integrally and rotatably connected to the second drive shaft 201b so that its axis is concentric with the second axis.

[0019] (Detailed configuration of the operation unit 5) Hereinafter, the configuration of the operation unit 5 will be described in detail with reference to FIGS. 3 to 11. FIG. 3 is a plan view showing the internal configuration of the operation unit according to the present embodiment. FIGS. 4 to 10 are cross-sectional views taken along line A-A, line B-B, a view corresponding to the cross-sectional view along line B-B in a state where the operation code is pulled down, line C-C, line D-D, line E-E, and line F-F of FIG. 3, respectively. FIGS. 11 and 12 are perspective views showing the operation unit in the second driving state and the first driving state, respectively.

[0020] As shown in FIG. 3, in addition to the first output shaft 51a, the second output shaft 51b, and the pulley 52 described above, the operation unit 5 includes an operation unit 53, a clutch mechanism 54, a transmission shaft 55, a connecting member 56, a first receiving member 57a, a second receiving member 57b, an input gear 58a, an intermediate gear 58c, an output gear 58b, and a switching interlocking mechanism 59. Hereinafter, each of the above components will be described.

[0021] (Pulley 52) As shown in FIGS. 4 and 5, the pulley 52 is connected to the operation code 531 formed in a string shape so as to be windable and unwindable around the outer periphery, and is rotatably supported by the fixed shaft 501 of the housing portion 50a. A spring 521 is provided inside the pulley 52. One end of the spring 521 is connected to the pulley 52, and the other end is connected to the fixed shaft 501, and a biasing force in the winding direction in which the operation code 531 is wound is constantly applied to the pulley 52. Thus, when the operator pulls down the operation code 531 by a predetermined amount or more, as shown in FIG. 6, the operation code 531 is unwound from the pulley 52 and the pulley 52 rotates, and the spring 521 contracts in diameter according to the rotation. This rotational driving force is transmitted to the transmission shaft 55 via the clutch mechanism 54. After that, when the operator releases the hand or the like to release the pulling down of the operation code 531, the pulley 52 rotates in the reverse direction by the restoring force of the spring 521, and the operation code 531 is wound up.

[0022] (Operation unit 53) As shown in FIG. 4, the operation unit 53 includes an operation code 531, a hollow cylindrical switching operation unit 532, and a hollow cylindrical operation rod 533. As shown in FIG. 1, at the lower end of the operation rod 533, a grip portion 534 formed in a hollow cylindrical shape for the operator to grip is formed, and a cord stopper 535 is located at the lower end thereof. As shown in FIG. 4, one end of the operation code 531 is connected to the pulley 52, the other end hangs down from the pulley 52, passes through the switching operation unit 532, the operation rod 533, and the grip portion 534, and is connected to the cord stopper 535. Although the operation code 531 is biased in the winding direction by the biasing force of the spring 521, since the cord stopper 535 abuts against the lower end of the grip portion 534, further winding of the operation code 531 is prevented. Thus, when the cord stopper 535 is pulled away from the grip portion 534, the operation code 531 can be unwound from the pulley 52 to rotate the pulley 52. Also, when the hand is released after pulling down by a predetermined amount or more, the operation code 531 is wound around the pulley 52, and the cord stopper 535 and the grip portion 534 come into contact with each other again.

[0023] The switching operation unit 532 is rotatably supported around its axis by the housing portions 50a and 50b at its upper end portion. A protruding piece protruding rearward is formed at the upper end portion, and a columnar connecting pin 532a extending in the vertical direction is provided on the upper surface of the protruding piece. The switching operation unit 532 is connected to the switching transmission portion 591 of the switching interlocking mechanism 59 via the connecting pin 532a, and the switching interlocking mechanism 59 will interlock in response to a rotational operation of the switching operation unit 532. The operation rod 533 is integrally rotatably connected to the switching operation unit 532 via a joint portion 536 at its upper end portion. Thus, the operator can rotate the switching operation unit 532 via the operation rod 533 and the joint portion 536 by rotating the grip portion 534.

[0024] (Clutch mechanism 54) The clutch mechanism 54 transmits only the one-way rotation of the pulley 52 to the transmission shaft 55, and has an interlocking member 541 as shown in FIG. 8. As shown in FIGS. 8 and 9, the interlocking member 541 is integrally rotatably connected to a shaft 542 whose axis is concentric with the first output shaft 51a. When the operation cord 531 is pulled down and the pulley 52 rotates in one direction (hereinafter referred to as the winding and unwinding direction), it rotates in the same direction as the shaft 542 in conjunction with the rotation. On the other hand, when the pulley 52 rotates in the winding direction opposite to the winding and unwinding direction, the interlocking member 541 does not interlock with the rotation and the shaft 542 does not rotate either. Therefore, only the pulley 52 idles. Thereby, the clutch mechanism 54 can rotate the shaft 542 only when the operation cord 531 is pulled down.

[0025] (transmission shaft 55) As shown in FIG. 8, the transmission shaft 55 is a long member extending in the left-right direction and having an axis concentric with the first output shaft 51a, and a shaft 542 is integrally rotatably inserted into one end portion. Further, the other end portion of the transmission shaft 55 is inserted into the first output shaft 51a so as to be relatively rotatable, and rotates integrally with the first output shaft 51a only when the operation unit 5 is in a first driving state described later.

[0026] (connecting member 56) As shown in FIG. 8, the connecting member 56 is formed in a substantially ring shape through which the transmission shaft 55 is inserted so as to be integrally rotatable with the same axis, and is slidably connected to the transmission shaft 55 along the axial direction (left - right direction). The connecting member 56 is located between the first and second receiving members 57a and 57b. When switched to the first position slid to the left in the left - right direction in the figure, it connects to the first receiving member 57a, and when switched to the second position slid to the right in the left - right direction in the figure, it connects to the second receiving member 57b. By this connection, the connecting member 56 can be connected so as to transmit the rotational driving force of the transmission shaft 55 to either the first and second output shafts 51a and 51b via the connected receiving member. In the state where the connecting member 56 is switched to the first position and connected to the first receiving member 57a, the operation unit 5 is in the first driving state. On the other hand, in the state where the connecting member 56 is switched to the second position and connected to the second receiving member 57b, the operation unit 5 is in the second driving state.

[0027] As shown in FIG. 11, a plurality of engaging teeth 561 protruding in the out - of - plane direction are provided on both left - right side surfaces of the connecting member 56. The engaging teeth 561 on both side surfaces have inclined surfaces inclined in the circumferential direction and form a substantially triangular shape, and are formed so as to face each other with the center of the connecting member 56 in the left - right direction as the boundary. The connection between the connecting member 56 using the engaging teeth 561 and the first and second receiving members 57a and 57b will be described in detail later.

[0028] As shown in FIGS. 8 and 10, the connecting member 56 has a groove portion 562 formed by the circumferential surface of the central portion in the left-right direction being uniformly recessed. A connecting member 60 for connecting the switching conversion portion 592 of the switching interlocking mechanism 59, which will be described in detail later, and the connecting member 56 can be fitted into the groove portion 562. As shown in FIG. 10, the connecting member 60 is supported so as to be slidable in the left-right direction within the housing portion 50b. The connecting member 60 has a curved portion 61 having a U-shaped opening upward, and the curved portion 61 is fitted into the groove portion 562 to be connected to the connecting member 56. In this state, a part of the connecting member 56 is positioned so as to be relatively rotatable inside the arc formed by the curved portion 61. Further, a connecting hole 62 is formed at the lower portion of the connecting member 60 into which a columnar connecting pin 592a extending in the vertical direction provided on the switching conversion portion 592 of the switching interlocking mechanism 59 is rotatably inserted. By inserting the connecting pin 592a into the connecting hole 62, the switching conversion portion 592 of the switching interlocking mechanism 59 and the connecting member 60 are connected. Therefore, the switching conversion portion 592 and the connecting member 56 are connected via the connecting member 60.

[0029] In the present embodiment, the upper end of the curved portion 61 is configured to be positioned above the axis of the transmission shaft 55 (or the axis of the connecting member 56) by a vertical distance X, and the left and right side surfaces of the curved portion 61 are in surface contact with the inner side surface of the groove portion 562 of the connecting member 56. According to this, compared with the case where the switching conversion portion 592 of the switching interlocking mechanism 59 and the connecting member 56 are directly connected without passing through the connecting member 60, the movement of the connecting member 56 according to the operation of the switching interlocking mechanism 59 can be made smoother. The distance of the vertical distance X may be appropriately set according to product specifications and the like, but the above effect can be achieved as long as at least the upper end of the curved portion 61 is positioned above the axis of the connecting member 56.

[0030] (First receiving member 57a) As shown in FIG. 8, the first receiving member 57a is located on the left side in the left - right direction in the drawing of the connecting member 56 and is formed in a substantially ring shape through which the transmission shaft 55 is inserted so as to be relatively rotatable. On the left side of the first receiving member 57a, there is a substantially disk - shaped protruding piece 511 integrally formed on the first output shaft 51a and protruding in the radially outward direction. A coil spring 572 is provided between the protruding piece 511 and the first receiving member 57a. The protruding piece 511 is provided with a plurality of protrusions protruding in the direction of the first receiving member 57a, and the first receiving member 57a is formed with a plurality of hole portions into which the protrusions are slidably fitted respectively. Thus, the first receiving member 57a is connected to the first output shaft 51a via the protruding piece 511 so as to be integrally rotatable and movable in the left - right direction.

[0031] As shown in FIG. 11, on the right - hand surface of the first receiving member 57a, there are provided a plurality of engaging teeth 571 having substantially the same shape as the engaging teeth 561 of the opposing connecting member 56. The inclined surfaces of the engaging teeth 571 are in a circumferentially reverse position to the inclined surfaces of the engaging teeth 561. Therefore, when the connecting member 56 moves to the first position and rotates in one direction, the engaging teeth 561 and the engaging teeth 571 engage with each other, so that the connecting member 56 and the first receiving member 57a are connected and perform integral rotation. On the other hand, since the rotation input from the pulley 52 to the transmission shaft 55 is in only one direction, the rotation transmitted from the connecting member 56 to the first receiving member 57a is in only one direction. However, with respect to the rotation of the connecting member 56 in the other direction, the inclined surfaces of the engaging teeth 561 and the inclined surfaces of the engaging teeth 571 are in sliding contact, so that the first receiving member 57a moves toward the protruding piece 511 against the biasing force of the coil spring 572, and the connecting member 56 is shaped so as to be relatively rotatable with respect to the first receiving member 57a. That is, a so - called ratchet mechanism is formed by the connecting member 56 and the first receiving member 57a.

[0032] Note that when the engaging teeth 561 and 571 collide during the connection between the first receiving member 57a and the connecting member 56, the coil spring 572 also functions as a buffer to release the first receiving member 57a to the left and relieve the impact. Further, even if such a collision occurs, the connecting member 56 can move to an appropriate position (the first position) by the sliding contact of both the engaging teeth 561 and 571 along their inclined surfaces. Note that the present invention is not limited to the coil spring 572, and the same effect as described above can be achieved with an elastic body such as a leaf spring.

[0033] (Second receiving member 57b) As shown in FIG. 8, the second receiving member 57b is located on the right side in the left - right direction in the drawing of the connecting member 56 and is formed in a substantially ring shape through which the transmission shaft 55 is inserted so as to be relatively rotatable. In the present embodiment, the second receiving member 57b is the same member as the first receiving member 57a, and their engaging teeth 571 face each other, and the connecting member 56 is disposed therebetween. A hollow substantially cylindrical relay member 573 through which the transmission shaft 55 is inserted so as to be relatively rotatable is rotatably supported within the housing portion 50b between the transmission shaft 55 and the second receiving member 57b. On the right side of the second receiving member 57b, a substantially disk - shaped protruding piece 574 integrally formed with the relay member 573 and protruding in the radially outer direction is located, and a coil spring 572 is provided between the protruding piece 574 and the second receiving member 57b. A plurality of protrusions protruding in the direction of the second receiving member 57b are provided on the protruding piece 574, and a plurality of hole portions into which the protrusions are slidably fitted are formed in the second receiving member 57b. Thereby, the second receiving member 57b is connected to the relay member 573 via the protruding piece 574 so as to be integrally rotatable and movable in the left - right direction.

[0034] As shown in Fig. 11, the engaging teeth 571 of the second receiving member 57b are formed on the left side surface opposite to that of the first receiving member 57a. Therefore, when the connecting member 56 moves to the second position and rotates in one direction, the second receiving member 57b, like the first receiving member 57a, engages with the engaging teeth 561 and the engaging teeth 571 to connect with the connecting member 56 and perform integral rotation. Since the functions realized by the second receiving member 57b and the coil spring 572 are the same as those of the first receiving member 57a, the description here is omitted.

[0035] (Input gear 58a, output gear 58b, and intermediate gear 58c) As shown in Figs. 8 and 9, the input gear 58a is disk-shaped and is integrally provided at the right end portion in the drawing of the relay member 573. As shown in Figs. 7 and 9, the output gear 58b is disk-shaped and is integrally provided at the right end portion in the drawing of the second output shaft 51b. As shown in Fig. 9, the intermediate gear 58c is located between the input gear 58a and the output gear 58b, and one end portion is integrally provided on a support shaft (not shown) that is rotatably supported by the housing portion 50b and the other end portion is rotatably supported by the housing portion 50c, and meshes with each gear. When a rotational driving force is input to the input gear 58a, the output gear 58b can output a rotational driving force in the same direction via the intermediate gear 58c.

[0036] In this embodiment, a connecting portion is configured by the connecting member 56, the first and second receiving members 57a and 57b, the input gear 58a, the output gear 58b, and the intermediate gear 58c to switchably connect either the first or second drive shaft 201a or 201b to the transmission shaft 55.

[0037] (Switching interlocking mechanism 59) As shown in Fig. 3, the switching interlocking mechanism 59 includes a switching transmission portion 591 whose one end is rotatably connected to the switching operation portion 532, and a switching conversion portion 592 whose substantially central portion is rotatably supported within the housing portion 50b, one end of which is rotatably connected to the other end of the switching transmission portion 591 and the other end of which is rotatably connected to the connecting member 60.

[0038] As shown in FIGS. 7 and 11, the switching transmission unit 591 is formed in a substantially plate shape that is located below the second output shaft 51b and extends in the left-right direction, and is supported by the housing unit 50b so as to be movable in the left-right direction as shown in FIG. 9. As shown in FIG. 11, a connecting hole 591a is provided at one end (the right end in the figure) of the switching transmission unit 591, and a connecting hole 591b is provided at the other end (the left end in the figure). By inserting the connecting pin 532a of the switching operation unit 532 into the connecting hole 591a, the switching operation unit 532 and the switching transmission unit 591 are rotatably connected. On the other hand, by inserting a columnar connecting pin 592b extending in the vertical direction formed at the other end of the switching conversion unit 592 into the connecting hole 591b, the switching transmission unit 591 and the switching conversion unit 592 are rotatably connected.

[0039] The connecting holes 591a and 591b are formed as long holes that are long in the front-rear direction, whereby the connecting pins 532a and 592b can slide in the front-rear direction while rotating within the connecting holes 591a and 591b. Therefore, the switching transmission unit 591 does not transmit the forward and backward movement generated in response to the arc-shaped swing of the connecting pin 532a caused by the rotation of the switching operation unit 532, and can perform a substantially reciprocating linear motion. Furthermore, since the connecting pin 592b swings in an arc shape in response to this reciprocating linear motion, the switching conversion unit 592 rotates. In other words, the rotational motion of the switching operation unit 532 is converted into a linear motion by the switching transmission unit 591, and the linear motion is further converted into a rotational motion by the switching conversion unit 592 and transmitted as a motion for moving the connecting member 56 in the left-right direction.

[0040] Also, as shown in FIGS. 7 and 11, steel balls 593 are disposed above the switching transmission unit 591, and two first and second recesses 591c and 591d adjacent to each other with a depth capable of accommodating a part of the steel balls 593 are provided on the upper surface of the switching transmission unit 591. As shown in FIG. 7, the movement of the steel balls 593 in directions other than the vertical direction is restricted by the housing unit 50b, and in a state where the steel balls 593 are located in either the first or second recess 591c or 591d, a leaf spring 594 provided on the housing unit 50b abuts against the upper part thereof.

[0041] When the switching transmission part 591 moves in the left - right direction, since the movement of the steel balls 593 in the left - right direction is restricted, as the first and second recesses 591c, 591d move, the steel balls move from one recess to the other by climbing over the edge between the recesses. When climbing over the edge between the recesses, an upward movement against the biasing force of the leaf spring 594 is performed, and then a downward movement according to the biasing force is performed. Therefore, when the switching operation part 532 is rotated, a rotation operation against the biasing force of the leaf spring 594 is performed. Thereby, unnecessary left - right movement of the switching transmission part 591 can be restricted, and an appropriate sense of resistance and click feeling can be given to the operator who rotates the switching operation part 532 via the gripping part 534. In this embodiment, as shown in FIG. 12, when the steel ball 593 is in the first recess 591c, the connecting member 56 is in the first position, and as shown in FIG. 11, when the steel ball 593 is in the second recess 591d, the connecting member 56 is in the second position.

[0042] As shown in FIGS. 3 and 10, the switching conversion part 592 is formed in a substantially plate - like shape that extends in the front - rear direction so that one end is located below the connecting member 56 and the other end is located below the second output shaft 51b and straddles the second output shaft 51b. The switching conversion part 592 is provided with an insertion hole 592c through which the support shaft 502 provided in the housing part 50b can be inserted at its substantially center, and is supported in the housing part 50b so as to be rotatable around the support shaft 502. The above - mentioned connecting pin 592a is provided at one end (the left - hand end in FIG. 10) of the switching conversion part 592, and the above - mentioned connecting pin 592b is provided at the other end (the right - hand end in FIG. 10). The switching conversion part 592 rotates according to the reciprocating linear motion of the switching transmission part 591, so that the connecting pin 592a swings in an arc while rotating in the connecting hole 62 of the connecting member 60. According to this swing, the connecting member 56 moves in the left - right direction together with the connecting member 60.

[0043] Note that when the connecting pin 592a of the switching conversion unit 592 swings in an arc shape, it will move slightly in the front-rear direction along with the left-right movement. In order to prevent this front-rear movement from being transmitted to the connecting member 60, the connecting hole 62 is formed as a long hole that is long in the front-rear direction, similar to the connecting holes 591a and 591b.

[0044] (Operation of the operation unit 5) The operation of the operation unit 5 configured as described above in the first and second driving states will be described in detail with reference to FIGS. 11 to 14. FIGS. 13 and 14 are bottom views for explaining the transmission of the driving force in the operation unit in the second driving state and the first driving state, respectively. In FIGS. 13 and 14, the components to which the driving force is transmitted are shown in a thicker line than other components.

[0045] As shown in FIG. 11, when the steel ball 593 is located in the second recess 591d and the connecting member 56 and the second receiving member 57b are connected, the operation unit 5 is in the second driving state. In the second driving state, as shown in FIG. 13, the rotational driving force of the pulley 52 is transmitted to the second output shaft 51b. Specifically, the rotational driving force of the pulley 52 is transmitted to the transmission shaft 55 via the clutch mechanism 54 (interlocking member 541), and the connecting member 56 connected to the transmission shaft 55 rotates in the same direction as the pulley 52. At this time, since the connecting member 56 is switched to the second position in the second driving state, it is connected to the second receiving member 57b so as to be rotatable integrally, and the second receiving member 57b rotates in the same direction as the connecting member 56. In response to the rotation of the second receiving member 57b, the rotational driving force is input to the input gear 58a and transmitted to the output gear 58b via the input gear 58a and the intermediate gear 58c, and thus is output to the second output shaft 51b that is connected to the output gear 58b so as to be rotatable integrally. As a result, the second output shaft 51b can rotate in the same direction in conjunction with the rotation of the pulley 52.

[0046] On the other hand, when the switching operation unit 532 of the operation unit 5 in the second driving state is rotated clockwise in a plan view, as shown in FIG. 12, the switching transmission unit 591 moves rightward in the figure. In conjunction with this movement, the switching conversion unit 592 rotates counterclockwise in a plan view, so that the connecting member 56 moves leftward in the figure and switches from the second position to the first position and connects to the first receiving member 57a. Therefore, the horizontal position of the connecting member 56 can be easily switched by the rotation operation of the switching operation unit 532. At this time, the steel ball 593 moves from the second recess 591d to the first recess 591c in response to the rightward movement of the switching transmission unit 591 in the figure.

[0047] As shown in FIG. 14, when the connecting member 56 and the first receiving member 57a are connected, the operation unit 5 enters the first driving state. In the first driving state, the rotational driving force of the pulley 52 is output to the first output shaft 51a. Specifically, the rotational driving force of the pulley 52 is transmitted to the connecting member 56 via the clutch mechanism 54 (interlocking member 541) and the transmission shaft 55. At this time, since the connecting member 56 is switched to the first position in the first driving state, it is connected to the first receiving member 57a so as to be integrally rotatable, and the first receiving member 57a rotates in the same direction as the connecting member 56. Since the first receiving member 57a is connected to the first output shaft 51a so as to be integrally rotatable, the rotational driving force is output to the first output shaft 51a via the first receiving member 57a. As a result, the first output shaft 51a can rotate in the same direction in conjunction with the rotation of the pulley 52.

[0048] When shifting the operation unit 5 from such a first driving state to the second driving state again, the switching operation unit 532 of the operation unit 5 may be rotated counterclockwise in a plan view. Note that the operation of the operation unit 5 in this case is only that the moving directions of the connecting member 56 and the switching interlocking mechanism 59 are reversed, so the description here is omitted.

[0049] (Operation of the shielding device 1) Next, the operation of the shielding device 1 when the operation unit 5 is operated in the first and second driving states will be described in detail with reference to FIGS. 15 to 17. FIG. 15 is a front view of the shielding device in which the bottom rail according to the present embodiment is in the lowest position and the intermediate bar is in the intermediate position. FIGS. 16 and 17 are front views of the shielding device in a state where the operation codes of the operation unit are pulled in the first driving state and the second driving state, respectively.

[0050] When the operation unit 5 is in the first driving state with the bottom rail 31 and the intermediate bar 41 shown in FIG. 15 in the lowest position, if the cord stopper 535 is pulled down to rotate the pulley 52, as described above, the rotational driving force of the pulley 52 is transmitted to the first output shaft 51a. The rotational driving force transmitted to the first output shaft 51a is output to the first drive shaft 201a and then transmitted to the first winding drum 202a, causing the first winding drum 202a to rotate to wind up the lifting cord 32. As a result, the bottom rail 31 can be raised as shown in FIG. 16.

[0051] When the operator stops pulling down the cord stopper 535, the first drive shaft 201a, which had the rotational driving force transmitted to it, tries to rotate downward due to the weight of the bottom rail 31, but the first stopper device 203a (see FIG. 1) operates to stop the rotation. When the hand is released while the cord stopper 535 is pulled, the pulley 52 rotates in the reverse direction by the biasing force of the spring 521, and the operation cord 531 is wound up. At this time, since the pulley 52 rotates relative to the interlocking member 541, only the pulley 52 rotates in the reverse direction. Therefore, the reverse rotation is not transmitted to the first drive shaft 201a, and the position of the raised bottom rail 31 does not change.

[0052] As a result, the first drive shaft 201a is stopped by the first stopper device 203a, and the operation code 531 is wound around the pulley 52 until the cord stopper 535 abuts against the lower end of the gripping portion 534. By repeatedly performing such a pulling-down operation of the cord stopper 535 a plurality of times, the operator can raise the bottom rail 31 together with the screen 33 to the uppermost position. To lower the raised bottom rail 31, when the operator pulls the cord stopper 535 and then releases the hand while slightly pulling out the operation code 531, the stop of the first stopper device 203a is released via the first drive shaft 201a, and the bottom rail 31 descends by its own weight. At this time, due to the action of the first brake device 204a that decelerates the rotation of the first drive shaft 201a, the bottom rail 31 descends by its own weight while being decelerated.

[0053] On the other hand, in the state shown in FIG. 15, when the gripping portion 534 is rotated counterclockwise in a plan view as shown in FIG. 17, the switching operation portion 532 rotates integrally, and the connecting member 56 is interlocked and moved from the first position to the second position by the operation of the switching interlocking mechanism 59 corresponding to the rotation. As a result, the operation unit 5 enters the second driving state. When this operation unit 5 is in the second driving state, when the cord stopper 535 is pulled down to unwind the operation code 531 from the pulley 52, the rotational driving force of the pulley 52 is transmitted to the second output shaft 51b as described above. The rotational driving force transmitted to the second output shaft 51b is output to the second winding drum 202b via the second drive shaft 201b, and the second winding drum 202b winds up the dimming code 42. As a result, the intermediate bar 41 can be raised as shown in FIG. 17.

[0054] When the operation unit 5 is in the second driving state, the operation of stopping the pulling-down operation of the cord stopper 535 and the operation of the shielding device 1 when the operator releases the hand while a slight amount of the operation code 531 is pulled out are the same as when the operation unit 5 is in the first driving state, except that the operating bodies are the intermediate bar 41 and the second drive system. Therefore, the description is omitted.

[0055] According to the present embodiment described above, the rotational driving force of the pulley 52 can be selectively transmitted to either the first or second drive shafts 201a and 201b only by the rotational operation of the switching operation unit 532. Therefore, each of the first and second drive shafts 201a and 201b can be individually driven by only one operation unit 53, and there is no occurrence such as interference between the two operation codes as in the technique of driving each drive shaft by two pulleys and two operation codes, and the operability can be improved at each stage. Further, due to the connecting member 56 and the switching interlocking mechanism 59, the switching to either the first or second drive shafts 201a and 201b for transmitting the rotational driving force can be realized only by the rotational operation of the switching operation unit 532, which is extremely convenient. Furthermore, since the switching conversion unit 592 of the switching interlocking mechanism 59 is connected via the connecting member 56 and the connecting member 60 below so as to straddle the second output shaft 51b whose axis is concentric with the second drive shaft 201b, the space within the operation unit 5 can be effectively utilized, and the entire unit can be made compact.

[0056] In this embodiment, 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 may 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, although the rotational driving force of the pulley 52 is selectively transmitted to either the first and second drive shafts 201a and 201b by the rotational operation of the switching operation unit 532, the present invention is not limited to this. The switching operation unit 532 may be slid in the vertical or horizontal direction. Further, although only the rotational driving force of the pulley 52 in one direction is transmitted to the transmission shaft 55 by the clutch mechanism 54, the present invention is not limited to this. The present invention is also applicable to a shielding device in which the pulley is rotated in one direction and the other direction by an annular ball chain or the like, and each drive shaft is rotated bidirectionally by the rotational driving forces in those two directions. In that case, for example, by making the engaging teeth 561 and 571 rectangular without providing inclined surfaces, bidirectional rotation can be selectively transmitted to the first and second output shafts 51a and 51b. Also, although the pleated screen has been described as an example of the shielding device, the present invention can be applied to shielding devices such as horizontal blinds, vertical blinds, roll screens, honeycomb screens, lift-up curtains, accordion doors, and other blinds, curtains, or partitions.

[0057] The present invention can be implemented in various other forms without departing from its gist or main features. Therefore, the foregoing embodiments are merely illustrative in every respect and should not be construed in a limiting sense. The scope of the present invention is indicated by the scope of the claims and is not restricted by the text of the specification in any way. Furthermore, all modifications, various improvements, alternatives, and modifications belonging to the equivalent scope of the claims are all within the scope of the present invention.

Explanation of Reference Numerals

[0058] 1 Shielding device 201a First drive shaft 201b Second drive shaft 31 Bottom rail (first moving member) 41 Intermediate bar (second moving member) 5 Operation unit (operating device) 52 Pulley 53 Operating part 531 Operation code 532 Switching operation part 533 Operating rod 535 Cord stopper 56 Connecting member (transmission part) 59 Switching interlocking mechanism (transmission part) 591 Switching transmission part (transmission part) 592 Switching conversion part (transmission part)

Claims

1. An operating device for operating the first and second moving members of the shading device, an operation unit capable of switching the shading device between a first state for operating the first moving member and a second state for operating the second moving member; Equipped with The operation unit has an operation rod, The switching operation is performed by rotating the operating rod, The operation unit has a switching operation unit having one end connected to the shading device and the other end connected to the operation rod so as to be rotatable together with the operation rod, When the operating rod is rotated, the rotation is input to the shading device via the switching operation unit, and the switching operation is performed. An operating device characterized by:

2. a transmission unit that transmits the rotation of a pulley that rotates by pulling an operating cord to a first drive shaft that drives the first moving member when the shielding device is moved to a first position, and transmits the rotation of the pulley to a second drive shaft that drives the second moving member when the shielding device is moved to a second position, thereby switching the shielding device to the second state; When the operating rod is rotated, the position of the transmission part is switched to either the first position or the second position by the switching operation part to which the rotation is input.

2. The operating device according to claim 1 .

3. The operating portion has a cord stopper located at a lower end of the operating rod and connected to one end of an operating cord passing through the operating rod, When the cord fastener is pulled, the first moving member moves in the first state, and the second moving member moves in the second state.

3. The operating device according to claim 1 or 2.

4. An operating device for operating the first and second moving members of the shading device, an operation unit capable of switching the shading device between a first state for operating the first moving member and a second state for operating the second moving member; Equipped with The operation unit includes an operation rod and a cord stopper located at a lower end of the operation rod and connected to one end of an operation cord passing through the operation rod, The switching operation is performed by rotating the operating rod, When the cord fastener is pulled, the first moving member moves in the first state, and the second moving member moves in the second state. An operating device characterized by:

5. An operating device for operating the first and second moving members of the shading device, an operation unit capable of switching the shading device between a first state for operating the first moving member and a second state for operating the second moving member; Equipped with The operation unit has an operation rod, The switching operation is performed by sliding the operating rod in the vertical or horizontal direction. An operating device characterized by:

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