JP2022120152A - Operation device and operation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of improving operability.

SOLUTION: An operation device for operating first and second moving members of a shielding device is configured to include an operation part 53 capable of switching operation for switching the shielding device between a first state for operating the first moving member and a second state for operating the second moving member.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2022,JPO&INPIT

Description

This embodiment relates to an operating device for a shielding device.

2. Description of the Related Art Conventionally, as a shielding device having an operating device, one disclosed in Patent Document 1 below is known. The shielding device disclosed in Patent Document 1 includes a first driving shaft rotatably supported within the headbox and capable of moving a first moving member, and a first driving shaft rotatably supported within the headbox and having a second moving member. a second drive shaft capable of moving a 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 shielding material can be moved up and down by operating the first operation cord that can be unwound, and the second shielding material can be moved up and down by operating the second operation cord that can be wound and unwound by the second pulley. It is made like this.

According to such a shielding device, since the first pulley and the second pulley can be arranged side by side in the horizontal direction, the hanging position of the first operation cord and the hanging position of the second operation cord can be different in the horizontal direction. As a result, the two types of operation codes for opening and closing the first shielding member and the second shielding member can be suspended from the headbox in an easily discernable manner.

Japanese Unexamined Patent Application Publication No. 2020-20132

However, such a shielding device requires two first and second pulleys for rotationally driving the first and second drive shafts, and two operating cords for rotationally operating the first and second pulleys, respectively. is. Although the hanging positions of the two operation cords can be made different in the horizontal direction, there is a possibility that the two operation cords may interfere with each other, such as being entangled with each other, depending on how the operation cords are operated. was

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a technique capable of improving operability.

In order to solve the above-described problems, one aspect of the present invention provides an operating device for operating first and second moving members of a shielding device, wherein the shielding device is placed in a first state in which the first moving member is operated. and a second state in which the second moving member is operated.

According to the present invention, it is possible to improve the operability of operation codes.

It is a front view which shows the structure of the shielding apparatus which concerns on embodiment. 1 is a schematic perspective plan view showing the configuration of a shielding device according to an embodiment; FIG. FIG. 4 is a plan view showing the internal configuration of the operating unit of the shielding device according to the embodiment; FIG. 4 is a cross-sectional view taken along the line AA shown in FIG. 3; 4 is a cross-sectional view taken along the line BB shown in FIG. 3; FIG. FIG. 4 is a cross-sectional view equivalent to the BB line shown in FIG. 3 when an operation cord of the operation unit is pulled; 4 is a cross-sectional view taken along the line CC shown in FIG. 3; FIG. 4 is a cross-sectional view taken along line DD shown in FIG. 3; FIG. 4 is a cross-sectional view taken along line EE shown in FIG. 3; FIG. 4 is a cross-sectional view taken along line FF shown in FIG. 3; FIG. FIG. 11 is a perspective view showing the operating unit in a second driving state; FIG. 4 is a perspective view showing the operating unit in a first driving state; FIG. 11 is a bottom view for explaining transmission of driving force in the operation unit in the second driving state; FIG. 10 is a bottom view for explaining transmission of driving force in the operation unit in the first driving state; FIG. 4 is a front view of the shielding device according to the embodiment with the bottom rail in the lowest position and the intermediate bar in the intermediate position; FIG. 10 is a front view of the shielding device in a state in which the operating cord of the operating unit is pulled in the first driving state; FIG. 11 is a front view of the shielding device in a state in which the operating cord of the operating unit is pulled in the second driving state;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, a shielding device in which the present invention is applied to a pleated screen provided with two types of screens that can be raised and lowered as shielding materials will be described as an example. In this embodiment, when the shielding device is installed, the indoor side is the front, the outdoor side is the back, the direction consisting of the front and back is the front-back direction, and the longitudinal direction of the shielding device is the left-right direction. hereinafter, will be described. Further, in the present specification and drawings, constituent elements having substantially the same functions are denoted by the same reference numerals, thereby omitting redundant description.

(overall structure)
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 a shielding device according to this embodiment, and FIG. 2 is a schematic perspective plan view thereof. FIG. 1 shows the shielding device with the bottom rail lowered to the lowest position, and only the inside of the headbox is shown.

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, and two lifting cords formed in a string or tape shape. 32, a screen 33 as a first shielding material, an intermediate bar 41 as a second moving member, two string-like or tape-like dimming cords 42, and a screen 43 as a second shielding material. and an operation unit 5.

The head box 2 is fixed to a window frame (not shown) or the like via a bracket 21, and is formed in a long box shape having an accommodation space inside. Inside the head box 2 are 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, and two second winding drums. The take-up drum 202b, the second stopper device 203b, the second brake device 204b, and the interlocking gear 205 are accommodated.

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 that moves the bottom rail 31 up and down. Also, 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 moving the intermediate bar 41 up and down. 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 in the front-rear direction with their positions different from each other. be. For example, the first drive system and the second drive system may be arranged side by side so that their positions are different in the vertical direction. You can do it.

The first and second drive shafts 201a and 201b are prismatic members that extend in the left-right direction, and are rotatably supported in the head box 2 with the axial direction in the left-right direction. Here, the axial center of the first drive shaft 201a and the axial center of the second drive shaft 201b are located at the same position and rearward in the vertical direction, and the positions of the axial centers are different in the front-rear direction. In the following description, the axis of the first drive shaft 201a will be referred to as the first axis, and the axis of the second drive shaft 201b will be referred to as the second axis.

Each of the two first winding drums 202a is penetrated by the first drive shaft 201a so as to rotate integrally with the first drive shaft 201a, and one end of the corresponding lifting cord 32 of the two lifting cords 32 is wound and wound. They are connected so that they can be unwound. Each of the two second winding drums 202b is penetrated by 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 wound. It is connected so that it can be taken up and unwound. 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 slows down the rotation of the first drive shaft 201a. The second brake device 204b decelerates the rotation of the second drive shaft 201b.

The bottom rail 31 is connected to the other end of the two lifting cords 32, is suspended from the head box 2 so as to be positioned at the lowermost end of the shielding device 1, and is elongated in the left-right direction. is. The intermediate bar 41 is connected to the other ends of the two dimming cords 42 and is suspended from the head box 2 so as to be positioned between the head box 2 and the bottom rail 31 in the vertical direction. It is a member formed in a long length. The screen 33 has an upper end connected to the lower surface of the intermediate bar 41 and a lower end connected to the upper surface of the bottom rail 31. The screen 33 is formed in a pleated shape that can be folded vertically. It is a shielding member inserted in the direction. The screen 43 has an upper end connected to the lower surface of the head box 2 and a lower end connected to the upper surface of the intermediate bar 41, and is formed in a pleated shape that can be folded vertically. It is a shielding member inserted vertically.

The operation unit 5 is provided at one of the left and right ends of the head box 2 as shown in FIG. 2, or at the right end in the drawing in this embodiment. The operation unit 5 includes a housing 50 having a housing space formed therein, which is composed of three detachable housings 50a to 50c (see FIG. 7, etc.), and a housing 50c rotatably and pivotally supported. 1 output shaft 51a (see FIG. 8), a second output shaft 51b (see FIG. 7) rotatably supported by housing portions 50b and 50c, and a pulley 52 capable of selectively rotating these output shafts. Prepare. The first output shaft 51a is integrally 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 connected to the second output shaft 51b. It is connected to the second drive shaft 201b so as to be concentric with the axis so as to be able to rotate integrally therewith.

(Detailed configuration of operation unit 5)
The configuration of the operation unit 5 will be described in detail below with reference to FIGS. 3 to 11. FIG. FIG. 3 is a plan view showing the internal configuration of the operation unit according to this embodiment. 4 to 10 are respectively a cross-sectional view along the line AA, a cross-sectional view along the line BB, a cross-sectional view equivalent to the cross-sectional view along the line BB when the operation cord is pulled down, a cross-sectional view along the line CC, and a cross-sectional view along the line DD in FIG. They are a line cross-sectional view, an EE line cross-sectional view, and an FF line cross-sectional view. 11 and 12 are perspective views showing the operating unit in the second driving state and the first driving state, respectively.

As shown in FIG. 3, the operation unit 5 includes, in addition to the first output shaft 51a and the second output shaft 51b and the pulley 52 described above, an operation portion 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 are provided. Each component described above will be described below.

(Pulley 52)
As shown in FIGS. 4 and 5, the pulley 52 has a string-like operation cord 531 connected to its outer periphery so as to be wound up and unwound, and is rotatably shafted by a fixed shaft 501 of the housing portion 50a. supported. A spiral spring 521 is provided inside the pulley 52 . The spiral spring 521 has one end connected to the pulley 52 and the other end connected to the fixed shaft 501, and constantly applies a biasing force to the pulley 52 in the winding direction in which the operation cord 531 is wound. As a result, when the operator pulls down the operation cord 531 by a predetermined amount or more, the operation cord 531 is unwound from the pulley 52 as shown in FIG. 6, and the pulley 52 rotates. It will be done. This rotational driving force is transmitted to the transmission shaft 55 via the clutch mechanism 54 . After that, when the operator releases the operation cord 531 from being pulled down, the restoring force of the spiral spring 521 causes the pulley 52 to rotate in the opposite direction, and the operation cord 531 is wound up.

(Operation unit 53)
The operation unit 53 includes an operation cord 531 , a hollow cylindrical switching operation unit 532 , and a hollow cylindrical operation rod 533 , as shown in FIG. 4 . As shown in FIG. 1, the lower end of the operating rod 533 is formed with a hollow cylindrical gripping portion 534 for the operator to grip, and a cord stop 535 is positioned at the lower end of the gripping portion 534 . As shown in FIG. 4, the operating cord 531 has one end connected to the pulley 52 and the other end hanging down from the pulley 52. The operating cord 531 passes through the switching operation portion 532, the operating rod 533, and the grip portion 534 to be fastened to the cord. 535. Although the operation cord 531 is urged in the winding direction by the urging force of the spiral spring 521, since the cord stop 535 abuts on the lower end of the grip portion 534, further winding of the operation cord 531 is prevented. . As a result, when the cord stop 535 is pulled away from the grip portion 534, the operation cord 531 is unwound from the pulley 52 and the pulley 52 can be rotated. Further, when the hand is released after being pulled down by a predetermined amount or more, the operation cord 531 is wound around the pulley 52, and the cord stop 535 and the grasping portion 534 come into contact with each other again.

The switching operation section 532 is supported at its upper end portion by the housing sections 50a and 50b so as to be rotatable around the axis. A protruding piece that protrudes rearward is formed on the upper end portion, and a cylindrical connecting pin 532a that extends in the vertical direction is provided on the upper surface of the protruding piece. The switching operation portion 532 is connected to the switching transmission portion 591 of the switching interlocking mechanism 59 via the connecting pin 532 a , and the switching interlocking mechanism 59 is interlocked according to the rotation operation of the switching operation portion 532 . The operating rod 533 is connected to the switching operating section 532 via a joint section 536 at its upper end so as to be capable of rotating integrally therewith. Accordingly, the operator can rotate the switching operation portion 532 via the operation rod 533 and the joint portion 536 by rotating the grip portion 534 .

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

(Transmission shaft 55)
As shown in FIG. 8, the transmission shaft 55 is an elongated member that extends in the left-right direction and whose axis is concentric with the first output shaft 51a. ing. The other end of the transmission shaft 55 is rotatably inserted into the first output shaft 51a, and rotates integrally with the first output shaft 51a only when the operation unit 5 is in a first drive state, which will be described later. .

(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 that the transmission shaft 55 is concentric so that the shaft center is concentric. ) is slidably coupled along the The connecting member 56 is positioned between the first and second receiving members 57a and 57b, and is connected to the first receiving member 57a when switched to the first position slid leftward in the left-right direction in the figure. When it is switched to the second position where it slides rightward in the middle-right direction, it connects with the second receiving member 57b. By this connection, the connecting member 56 can be connected to one of the first and second output shafts 51a and 51b via the connected receiving member so that the rotational driving force of the transmission shaft 55 can be transmitted. When the connecting member 56 is switched to the first position and connected to the first receiving member 57a, the operating unit 5 is in the first driving state. On the other hand, when the connecting member 56 is switched to the second position and connected to the second receiving member 57b, the operating unit 5 is in the second driving state.

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

As shown in FIGS. 8 and 10, the connecting member 56 has a groove 562 formed by uniformly recessing the peripheral surface of the central portion in the left-right direction. A connection member 60 for connecting a switching conversion portion 592 of a switching interlocking mechanism 59 to be described in detail later and the connecting member 56 can be fitted into the groove portion 562 . As shown in FIG. 10, the connection member 60 is supported in the housing portion 50b so as to be slidable in the left-right direction. The connection member 60 has a U-shaped curved portion 61 with an open top, and is connected to the connecting member 56 by fitting the curved portion 61 into the groove portion 562 . In this state, a portion of the connecting member 56 is positioned inside the arc formed by the curved portion 61 so as to be relatively rotatable. A connecting hole 62 is formed in the lower portion of the connecting member 60, into which a vertically extending columnar connecting pin 592a provided in the switching conversion portion 592 of the switching interlocking mechanism 59 is slidably inserted. ing. By inserting the connecting pin 592 a 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 .

In this embodiment, the upper end of the bending portion 61 is positioned above the axis of the transmission shaft 55 (or the axis of the connecting member 56) by a distance X in the vertical direction. The side surface is in surface contact with the inner surface of the groove portion 562 of the connecting member 56 . According to this, the movement of the connecting member 56 according to the operation of the switching interlocking mechanism 59 can be reduced compared to the case where the switching conversion portion 592 of the switching interlocking mechanism 59 and the connecting member 56 are directly connected without the connecting member 60 intervening. It can be made smoother. The vertical distance X may be appropriately set according to product specifications and the like, but the above effect can be obtained if at least the upper end of the curved portion 61 is positioned above the axis of the connecting member 56 .

(First receiving member 57a)
As shown in FIG. 8, the first receiving member 57a is positioned on the left side of the connecting member 56 in the left-right direction, 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, a substantially disk-shaped protruding piece 511 that is formed integrally with the first output shaft 51a and protrudes radially outward is positioned. A coil spring 572 is provided between. The projecting piece 511 is provided with a plurality of projections projecting toward the first receiving member 57a, and the first receiving member 57a is formed with a plurality of holes into which the projections are slidably fitted. . As a result, the first receiving member 57a is connected to the first output shaft 51a through the projecting piece 511 so as to be rotatable integrally with the first output shaft 51a and to be movable in the left-right direction.

As shown in FIG. 11, a plurality of engaging teeth 571 having substantially the same shape as the engaging teeth 561 of the opposing connecting member 56 are provided on the right side surface of the first receiving member 57a. The inclined surface of the engaging tooth 571 is opposite to the inclined surface of the engaging tooth 561 in the circumferential direction. Therefore, when the connecting member 56 moves to the first position and rotates in one direction, the engaging tooth 561 and the engaging tooth 571 are engaged with each other, thereby connecting the connecting member 56 and the first receiving member 57a to rotate together. I do. On the other hand, since the rotation input from the pulley 52 to the transmission shaft 55 is only in one direction, the rotation transmitted from the connecting member 56 to the first receiving member 57a is only in one direction. With respect to rotation, the first receiving member 57a moves toward the projecting piece 511 against the biasing force of the coil spring 572 due to the sliding contact between the inclined surface of the engaging tooth 561 and the inclined surface of the engaging tooth 571. As a result, the connecting member 56 is configured to be relatively rotatable with respect to the first receiving member 57a. That is, the connecting member 56 and the first receiving member 57a form a so-called ratchet mechanism.

When the engaging teeth 561 and 571 collide when the first receiving member 57a and the connecting member 56 are connected to each other, the coil spring 572 is a shock absorber that relieves the shock by releasing the first receiving member 57a to the left. Also works as material. Further, even if the collision occurs, both the engaging teeth 561 and 571 are in sliding contact along the inclined surfaces, so that the connecting member 56 can be moved to an appropriate position (first position). It should be noted that the coil spring 572 is not limited to this, and an elastic body such as a plate spring can produce the same effect as described above.

(Second receiving member 57b)
As shown in FIG. 8, the second receiving member 57b is positioned on the right side of the connecting member 56 in the left-right direction, and has a substantially ring shape through which the transmission shaft 55 is inserted so as to be relatively rotatable. In this embodiment, the second receiving member 57b is the same member as the first receiving member 57a, and is arranged so that the engaging teeth 571 face each other and the connecting member 56 is positioned between them. Between the transmission shaft 55 and the second receiving member 57b, 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. On the right side of the second receiving member 57b, a substantially disk-shaped protruding piece 574 that is integrally formed with the relay member 573 and protrudes radially outward is positioned. A coil spring 572 is provided therebetween. The projecting piece 574 is provided with a plurality of projections projecting toward the second receiving member 57b, and the second receiving member 57b is formed with a plurality of holes into which the projections are slidably fitted. there is As a result, the second receiving member 57b is connected to the relay member 573 via the protruding piece 574 so as to be able to rotate together and move in the left-right direction.

As shown in FIG. 11, the engaging tooth 571 of the second receiving member 57b is formed on the left side opposite to the first receiving member 57a. Therefore, in the second receiving member 57b, when the connecting member 56 is moved to the second position and rotated in one direction, the engaging teeth 561 and the engaging teeth 571 are engaged with each other in the same manner as the first receiving member 57a. is connected to the connecting member 56 by the , and integrally rotates. 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, description thereof will be omitted here.

(Input gear 58a, output gear 58b, and intermediate gear 58c)
As shown in FIGS. 8 and 9, the input gear 58a is disc-shaped and integrally provided at the right end of the relay member 573 in the drawing. As shown in FIGS. 7 and 9, the output gear 58b is disk-shaped and is integrally provided at the right end of the second output shaft 51b. As shown in FIG. 9, the intermediate gear 58c is positioned between the input gear 58a and the output gear 58b, one end of which is rotatably supported by the housing portion 50b and the other end of which is rotatably supported by the housing portion 50c. are provided integrally with a support shaft (not shown) and are meshed with the respective gears. When rotational driving force is input to the input gear 58a, the output gear 58b can output rotational driving force in the same direction via the intermediate gear 58c.

In this embodiment, any one of the first and second drive shafts 201a and 201b is controlled 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. A connecting portion for switching and connecting the transmission shaft 55 is formed.

(Switching interlocking mechanism 59)
As shown in FIG. 3, the switching interlocking mechanism 59 has a switching transmission part 591 rotatably connected to the switching operation part 532 at one end, and a rotatably pivotally supported substantially central part inside the housing part 50b. and a switching conversion part 592 whose one end is rotatably connected to the other end of the switching transmission part 591 and whose other end is rotatably connected to the connecting member 60 .

As shown in FIGS. 7 and 11, the switching transmission portion 591 is formed in a substantially plate-like shape that is positioned below the second output shaft 51b and extends in the left-right direction. It is supported by the housing part 50b so as to be movable in the left-right direction. As shown in FIG. 11, a switching transmission portion 591 has a connecting hole 591a at one end (right end in the drawing) and a connecting hole 591b at the other end (left end in the drawing). It is By inserting the connecting pin 532a of the switching operation portion 532 into the connecting hole 591a, the switching operation portion 532 and the switching transmission portion 591 are rotatably connected. On the other hand, a vertically extending columnar connecting pin 592b formed at the other end of the switching converting portion 592 is inserted into the connecting hole 591b, whereby the switching transmitting portion 591 and the switching converting portion 592 are connected. rotatably connected;

The connecting holes 591a and 591b are elongated in the front-rear direction, so that the connecting pins 532a and 592b can rotate and slide in the front-rear direction in the connecting holes 591a and 591b. Therefore, the switching transmission portion 591 can perform a substantially reciprocating linear motion without transmitting the longitudinal movement caused by the arc-shaped swing of the connecting pin 532a caused by the rotation of the switching operation portion 532 . Furthermore, since the connecting pin 592b swings in an arc shape according to this reciprocating linear motion, the switching conversion portion 592 rotates. In other words, the rotary motion of the switching operation portion 532 is converted into linear motion by the switching transmission portion 591, and the linear motion is further converted into rotary motion by the switching conversion portion 592 to move the connecting member 56 in the left-right direction. transmitted as motion.

7 and 11, a steel ball 593 is arranged above the switching transmission portion 591, and a part of the steel ball 593 is accommodated on the upper surface of the switching transmission portion 591. Two adjacent first and second recesses 591c, 591d of possible depth are provided. As shown in FIG. 7, the steel ball 593 is restricted from moving in directions other than the vertical direction by the housing portion 50b. A leaf spring 594 provided on the housing portion 50b is in contact with it.

When the switching transmission portion 591 moves in the left-right direction, the steel ball 593 is restricted from moving in the left-right direction. from one recess to the other. When getting over the edge between the recesses, it moves upward against the biasing force of the plate spring 594, and then moves downward according to the biasing force. Therefore, when rotating the switching operation portion 532 , the rotating operation is performed against the biasing force of the plate spring 594 . As a result, unnecessary left-right movement of the switching transmission portion 591 can be restricted, and the operator who rotates the switching operation portion 532 via the grip portion 534 can feel appropriate resistance and click feeling. can give. In this embodiment, when the steel ball 593 is in the first recess 591c as shown in FIG. 12, the connecting member 56 is in the first position, and as shown in FIG. In the state of being in the recess 591d, the connecting member 56 is in the second position.

As shown in FIGS. 3 and 10, the switching conversion portion 592 has one end positioned below the connecting member 56 and the other end positioned below the second output shaft 51b, and the second output shaft 51b is It is formed in a substantially plate shape extending in the front-rear direction so as to straddle. The switching conversion portion 592 is provided with an insertion hole 592c through which the support shaft 502 provided in the housing portion 50b can be inserted at substantially the center thereof. Supported. The connecting pin 592a described above is provided at one end (the left end in FIG. 10) of the switching conversion portion 592, and the connecting pin 592b described above is provided at the other end (the right end in FIG. 10). The switching conversion portion 592 rotates according to the reciprocating linear motion of the switching transmission portion 591 , so that the connecting pin 592 a rotates in the connecting hole 62 of the connecting member 60 and swings in an arc shape. The connecting member 56 moves in the left-right direction together with the connecting member 60 in accordance with this swing.

In addition, when the connecting pin 592a of the switching conversion portion 592 swings in an arc shape, the connecting pin 592a moves slightly in the front-rear direction as well as in the left-right direction. The connecting hole 62 is formed as an elongated hole elongated in the front-rear direction, like the connecting holes 591a and 591b, so that the movement in the front-rear direction is not transmitted to the connecting member 60. As shown in FIG.

(Operation of operation unit 5)
Operations of the operation unit 5 configured as described above in the first and second drive states will be described in detail with reference to FIGS. 11 to 14. FIG. 13 and 14 are bottom views for explaining transmission of driving force in the operation unit in the second driving state and the first driving state, respectively. Note that in FIGS. 13 and 14, the components to which the driving force is transmitted are indicated by thicker lines than the other components.

As shown in FIG. 11, the steel ball 593 is positioned in the second concave portion 591d, and the connecting member 56 and the second receiving member 57b are connected, whereby the operation unit 5 is brought into 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 pulley 52 is transmitted to transmission shaft 55 via clutch mechanism 54 (interlocking member 541 ), and coupling member 56 coupled to transmission shaft 55 rotates in the same direction as 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, 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, thereby rotating integrally with the output gear 58b. It will be output to the 2nd output shaft 51b connected so that it was possible. As a result, the second output shaft 51b can rotate in the same direction as the pulley 52 rotates.

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

As shown in FIG. 14, the operation unit 5 is brought into the first driving state by connecting the connecting member 56 and the first receiving member 57a. 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 rotate integrally therewith, 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 able to rotate integrally, 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 as the pulley 52 rotates.

In order to shift the operation unit 5 from the first drive state to the second drive state again, the switching operation portion 532 of the operation unit 5 should be rotated counterclockwise in plan view. It should be noted that the operation of the operation unit 5 in this case is only the moving direction of the connecting member 56 and the switching interlocking mechanism 59 being reversed, and thus description thereof will be omitted here.

(Operation of shielding device 1)
Next, operations of the shielding device 1 when the operation unit 5 is operated in the first and second drive states will be described in detail with reference to FIGS. 15 to 17. FIG. FIG. 15 is a front view of the shielding device according to this embodiment with the bottom rail at the lowest position and the intermediate bar at the intermediate position. 16 and 17 are front views of the shielding device in the first and second drive states, respectively, with the operating cord of the operating unit being pulled.

When the operation unit 5 is in the first drive state with the bottom rail 31 and the intermediate bar 41 at their lowest positions shown in FIG. A 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 51 a is transmitted to the first winding drum 202 a by being output to the first drive shaft 201 a so that the first winding drum 202 a winds the lifting cord 32 . Rotate. Thereby, the bottom rail 31 can be raised as shown in FIG.

When the operator stops pulling down the cord stop 535, the first drive shaft 201a to which the rotational driving force has been transmitted tries to rotate downward due to the weight of the bottom rail 31, but the first stopper device 203a ( 1) is activated to stop the rotation. When the cord stopper 535 is pulled and released, the pulley 52 rotates in the opposite direction due to the biasing force of the spiral spring 521, and the operation cord 531 is wound. At this time, since the pulley 52 rotates relative to the interlocking member 541, only the pulley 52 rotates in the opposite direction. Therefore, the reverse rotation is not transmitted to the first drive shaft 201a, and the raised position of the bottom rail 31 remains unchanged.

As a result, the first drive shaft 201a is stopped by the first stopper device 203a, and the operation cord 531 is wound around the pulley 52 until the cord stopper 535 contacts the lower end of the grip portion 534. As shown in FIG. The operator can lift the bottom rail 31 together with the screen 33 to the highest position by repeating the operation of pulling down the cord stop 535 a plurality of times. To lower the raised bottom rail 31, the operator pulls the cord stop 535 and releases the hand while the operation cord 531 is pulled out a little. is released, and the bottom rail 31 descends by its own weight. At this time, the bottom rail 31 is lowered by its own weight while being decelerated by the action of the first brake device 204a that decelerates the rotation of the first drive shaft 201a.

On the other hand, in the state shown in FIG. 15, when the grip part 534 is rotated counterclockwise in plan view as shown in FIG. The action of 59 moves the connecting member 56 from the first position to the second position. As a result, the operation unit 5 enters the second driving state. When the operating unit 5 is in the second driving state, pulling down the cord stopper 535 to unwind the operating cord 531 from the pulley 52 causes the rotational driving force of the pulley 52 to be 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 driving shaft 201b, and the second winding drum 202b winds the light control cord 42. Thereby, the intermediate bar 41 can be raised as shown in FIG.

When the operation unit 5 is in the second drive state, the operation of the shielding device 1 when the operation of pulling down the cord stopper 535 is stopped, and when the operator releases the operation cord 531 with the operation cord 531 pulled out a little, It is the same as the case where the operation unit 5 is in the first drive state, except that the subject of action is the intermediate bar 41 and the second drive system. Therefore, description is omitted.

According to the present embodiment described above, the rotational driving force of the pulley 52 can be selectively transmitted to either of the first and second drive shafts 201a and 201b only by rotating the switching operation portion 532. FIG. Therefore, the first and second drive shafts 201a and 201b can be individually driven with only one operation unit 53, compared to the technique of driving each drive shaft with two pulleys and two operation cords. The two operation codes do not interfere with each other, and the operability can be greatly improved. In addition, switching between the first and second drive shafts 201a and 201b to which the rotational driving force is transmitted by the connecting member 56 and the switching interlocking mechanism 59 can be realized simply by rotating the switching operation unit 532, which is extremely simple. is. Further, the switching conversion portion 592 of the switching interlocking mechanism 59 is connected via the connecting member 56 and the connecting member 60 to straddle the second output shaft 51b whose axis is concentric with the second drive shaft 201b. Therefore, the space inside the operation unit 5 can be effectively used, and the compactness of the entire unit can be realized.

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 moved vertically. Although the bottom rail 31 and the intermediate bar 41 are used, the moving direction of the first moving member and the second moving member may be either direction, and the first moving member and the second moving member are arranged in the front-rear direction and are arranged vertically. It may be one that moves in a direction or left and right. Further, although the rotational driving force of the pulley 52 is selectively transmitted to either one of the first and second drive shafts 201a and 201b by rotating the switching operation portion 532, the present invention is not limited to this. The switching operation unit 532 may be slid vertically or horizontally. Further, although the clutch mechanism 54 transmits only the rotational driving force of the pulley 52 in one direction to the transmission shaft 55, the present invention is not limited to this. The present invention can also be applied to shielding devices in which a pulley is rotated in one direction and the other direction by an annular ball chain or the like, and each drive shaft is rotated in both directions by the two-way rotational driving force. In that case, for example, by forming the engaging teeth 561 and 571 into a rectangular shape without providing inclined surfaces, bidirectional rotation can be selectively transmitted to the first and second output shafts 51a and 51b. In addition, the pleated screen was described as an example of the shielding device, but the present invention is applicable to shielding devices such as horizontal blinds, vertical blinds, roll screens, honeycomb screens, roll-up curtains, accordion doors, blinds, curtains, and partitions. Applicable.

The invention may be embodied in various other forms without departing from its spirit or essential characteristics. Therefore, the above-described embodiments are merely examples in all respects and should not be construed in a restrictive manner. The scope of the present invention is indicated by the claims and is not restricted by the text of the specification. Furthermore, all modifications, various improvements, substitutions and modifications that fall within the equivalent scope of claims are within the scope of the present invention.

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 (operation device)
52 pulley 53 operating portion 531 operating cord 532 switching operating portion 533 operating rod 535 cord stop 56 connecting member (transmitting portion)
59 switching interlocking mechanism (transmitting part)
591 switching transmission unit (transmission unit)
592 switching conversion unit (transmitting unit)

Claims (6)

In an operating device for operating the first and second moving members of the shielding device,
An operation device, comprising: an operation unit capable of performing a switching operation to switch the shielding device between a first state in which the first moving member is operated and a second state in which the second moving member is operated. The operation unit has an operation rod,
The operating device according to claim 1, wherein the switching operation is performed by rotating the operating rod. The operation part has a switching operation part, one end of which is connected to the shielding device and the other end of which is connected to the operation rod so as to be rotatable together,
3. The operating device according to claim 2, wherein when the operating rod is operated to rotate, the rotation is input to the shielding device via the switching operation section to perform the switching operation. When the shielding device is moved to the first position, the operation cord is pulled by the first drive shaft that drives the first moving member, thereby transmitting the rotation of the rotating pulley to bring the shielding device into the first state, and the second state. further comprising a transmission unit that transmits the rotation of the pulley to a second drive shaft that drives the second moving member when moved to the position to set the shielding device in the second state;
4. The position of the transmission unit is switched between the first position and the second position by the switching operation unit to which the rotation is input when the operation rod is rotated. operating device. The operation part has a cord stopper positioned at the lower end of the operation rod and connected to one end of an operation cord through which the operation rod is inserted,
Claims 2 to 4, characterized in that when the cord stop is pulled, the first moving member moves in the first state, and the second moving member moves in the second state. The operating device according to any one of Claims 1 to 3. An operating method for operating the first and second moving members of a shielding device, comprising:
By rotating the operation part for operating the first and second moving members, the shielding device is switched between a first state for operating the first moving member and a second state for operating the second moving member. A method of operation characterized by

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