JP5361676B2 - Cam clutch device, partition device using the same, and double screen solar shading device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stop the rotation of a drum or shaft in either of forward and backward rotations, and also to release the stop. <P>SOLUTION: A cam clutch device 17 rotates the drum in one direction or the other direction by pulling-down an operation device connected to the drum in one direction or the other direction, and stops the rotation of the drum by stopping the operation of the operation device. A first clutch 41 continuously rotates the drum in one direction by the continuous operation of the operation device in one direction with respect to the stopped drum, releases the stop of the drum by the slight operation of the operation device in one direction with respect to the stopped drum, and permits the rotation of the drum in the other direction. A second clutch 42 continuously rotates the drum in the other direction by the continuous operation of the operation device in the other direction with respect to the stopped drum, releases the stop of the drum by the slight operation of the operation device in the other direction with respect to the stopped drum, and permits the rotation of the drum in one direction. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a cam clutch device capable of stopping and releasing the rotation of a drum or a shaft by either forward or reverse rotation, and a partition device and a double screen solar shading device using this cam latch device. is there.

  Conventionally, first and second curtains whose upper ends are respectively locked to the head rail are arranged on the front and rear or left and right of the head rail, and the first and second drums are rotatably supported in the head rail. The other ends of the first and second lifting / lowering cords connected to the first and second drums so as to be wound or fed out are connected to the first and second curtains, respectively, and the first and second drums are relatively rotated. There is disclosed a roman shade in which a rotating shaft installed on a head rail so as to penetrate the head rail and extend along the head rail can be rotated and stopped at one end thereof (for example, Patent Documents) 1). In this roman shade, two sets of clutch mechanisms are supported on the head rail adjacent to the first and second drums. These clutch mechanisms are capable of reciprocating in the axial direction of the rotating shaft between two positions, a coupling position where the first and second drums are coupled in the rotational direction of the rotating shaft and a non-coupling position where the coupling is released. And a drive member operable to alternately couple the first and second drums in the rotational direction of the rotary shaft on one end side of the head rail. Two sets of stopper mechanisms are supported on the head rail adjacent to the first and second drums. These stopper mechanisms are capable of reciprocating in the axial direction of the rotary shaft between two positions of a locked position for fixing the first and second drums to the head rail and an unlocked position for releasing the fixing. And a fixing member operable to reciprocate in the axial direction in synchronization with the two sets of clutch mechanisms. Furthermore, by selecting the first and second take-up drums to be coupled to the rotating shaft by the alternating operation of the clutch mechanism and the stopper mechanism, the two curtains can be moved up and down by one rotating shaft. Configured.

  On the other hand, the first and second drums are provided so as not to move in the axial direction with respect to the rotating shaft, and the rotating shaft is provided so as to be capable of reciprocating in the axial direction by operation of an operating portion provided on one end side thereof. The driving member and the fixing member are mounted on the rotating shaft so as not to move in the axial direction, and the driving member and the fixing member are operated by the reciprocating movement of the rotating shaft in the axial direction so that the clutch mechanism and the stopper mechanism are alternately operated. Configured as follows. The operation unit includes an elevating pulley supported by an operation unit receiver in the head rail, a switching pulley, one operation chain wound around the elevating pulley, and the other pulley wound around the switching pulley. It has an operation chain and a cam mechanism. The lifting pulley is integral with the rotating shaft in the rotational direction and is supported by the operating portion receiver so as to be relatively movable in the axial direction. By rotating one of the operating chains, the lifting pulley and the rotating shaft rotate. Configured as follows. The lower portion of the lifting pulley is provided with a locking portion, and the lifting pulley and the cam member are rotated by locking one operation chain to the locking portion. The cam mechanism has a cam member, a driven member, and a spring. This cam mechanism portion is for 90-degree rotation of the cam member integrated with the lifting pulley to reciprocate the passive member in the axial direction together with the rotation shaft, and does not affect the rotation of the rotation shaft. Further, the switching pulley is supported by the operating portion receiver so as to be freely rotatable in the rotation direction and the axial direction with respect to the rotation axis and rotatable about the axis of the rotation axis. The lifting pulley and the cam member are configured to rotate by rotating the other operation chain.

  In the Roman shade configured as described above, the other operation chain is drawn and the lifting pulley is rotated 90 degrees to move the rotating shaft in the axial direction, thereby causing the clutch mechanism and the stopper mechanism to operate alternately. Select the drum that transmits the rotation of the rotation axis. And by drawing one operation chain and rotating the rotating shaft together with the lifting pulley, rotating any selected drum, winding any lifting cord around the drum or feeding it out of the drum, Arbitrary curtains can be raised and lowered. As a result, the front and rear or left and right curtains can be lifted and lowered by only one rotating shaft, so that the lifting mechanism of the roman shade can be reduced in size.

JP 2006-304983 A (claims 1 and 2, paragraphs [0017], paragraph [0018], paragraph [0021])

  However, although the conventional shade shown in Patent Document 1 has only one rotating shaft, two clutch mechanisms and two stopper mechanisms are required, which has a problem that the mechanism becomes complicated. Moreover, in the roman shade shown in the above-mentioned conventional patent document 1, two operation chains must be operated, and there is a problem that the operability is troublesome.

  A first object of the present invention is to provide a cam clutch device capable of stopping and releasing the rotation of a drum or a shaft by either forward or reverse rotation. The second object of the present invention is to operate one operation cord from both sides of the curtain so that the curtain can be unfolded and folded, that is, regardless of which direction the single operation cord is operated. An object of the present invention is to provide a partition device using a cam clutch device that can expand or fold up a curtain. A third object of the present invention is to provide a cam clutch device that can fold up the front curtain and the rear curtain at the same time or by unfolding either the front curtain or the rear curtain by operating one operation cord. It is to provide a double screen solar shading device used.

  As shown in FIGS. 1 to 5, the first aspect of the present invention is to rotate the drum 13 or the shaft in one direction by pulling down the operation tool connected to the drum 13 or the shaft in one direction or the other direction. Alternatively, the cam clutch device is configured to stop the rotation of the drum 13 or the shaft by rotating in the other direction and stopping the operation of the operation tool 18, and the operation is performed on the stopped drum 13 or the shaft. By continuously operating the tool 18 in one direction, the drum 13 or the shaft is continuously rotated in one direction, and the operation tool 18 is slightly operated in one direction with respect to the stopped drum 13 or shaft. 13 or the first clutch 41 that releases the stop of the shaft and allows the drum 13 or the shaft to rotate in the other direction, and the operation tool 18 is continuously operated in the other direction with respect to the stopped drum 13 or the shaft. Thus, the drum 13 or the shaft is continuously rotated in the other direction, and the operation tool 18 is slightly operated in the other direction with respect to the stopped drum 13 or the shaft, thereby releasing the stop of the drum 13 or the shaft. The cam clutch device includes a second clutch 42 that allows the drum 13 or the shaft to rotate in one direction.

  A second aspect of the present invention is an invention based on the first aspect, and further, as shown in FIGS. 1 to 5, a flexible linear body 14 is wound around a drum 13 or a shaft so as to be fed out. The take-up device is used as a take-up device to take out the linear body 14 by rotating the drum 13 or the shaft in one direction or the other direction with the operation tool 18, and the drum 13 or the shaft with the operation tool 18. The linear body 14 is configured to be wound by rotating in another direction or one direction.

  A third aspect of the present invention is an invention based on the first aspect, and as shown in FIGS. 1 to 5, the continuous operation of the first clutch 41 in one direction by the operation tool 18 is performed by the operation tool. A first continuous operation for stopping the rotation of the drum 13 or the shaft after the 18 is pulled down, and a second continuous operation for stopping the rotation of the drum 13 or the shaft after the operating tool 18 is subsequently pulled down after the first continuous operation. Or further repeating the subsequent first and second continuous operations, and the continuous operation of the second clutch 42 in the other direction by the operating tool 18 includes rotating the drum 13 or the shaft after the operating tool 18 is pulled down. A first continuous operation for stopping and a second continuous operation for stopping the rotation of the drum 13 or the shaft after the operation tool 18 is subsequently lowered after the first continuous operation, or the first and second continuous after that. Further including repetition of operations And butterflies.

  A fourth aspect of the present invention is an invention based on the first or third aspect, and further, as shown in FIGS. 1 to 5, a first cam groove 21 in which a first clutch 41 is formed in a cam 19. And the second clutch 42 has a second cam groove 22 formed in the cam 19, and the first cam groove 21 and the second cam groove 22 are opposite to each other. 21 and 22 are formed on the cam 19.

  As shown in FIGS. 1 to 5, the fifth aspect of the present invention is to operate an operation cord 18 that is an operation tool and wind up the lifting and lowering cord 14 on a winding drum 13 that is a drum so that it can be fed out. The curtain 16c can be unfolded or folded so that the curtain 16c can be unfolded, and the rotary shaft 12 connecting the operation cord 18 and the winding drum 13 is provided with the cam clutch device 17 according to any one of the first to fourth aspects. Partitioning device.

  The sixth aspect of the present invention is that, as shown in FIGS. 9 to 16, the operation cord 84 as an operation tool is operated so that the front curtain elevating cord 64 can be fed out to the front curtain drum 67 as a drum. By winding the rear curtain lifting / lowering cord 66 on the rear curtain drum 72, which is a winding and drum, such that the front curtain 62 and the rear curtain 63 can be unfolded separately or simultaneously, the operation cord 84 and Any one of the first to fourth aspects may be applied to either the rear curtain shaft 73 for connecting the rear curtain drum 72 or the operation cord 84 and the front curtain shaft 68 for connecting the front curtain drum 67. It is a double screen solar shading device provided with the described cam clutch device 17.

  In the cam clutch device according to the first aspect of the present invention, the first clutch rotates the drum or the like continuously in one direction by continuously operating the operation tool in one direction, and slightly moves the operation tool in one direction. Operates to release the stop of the drum, etc. and allows the drum to rotate in the other direction, and the second clutch continuously rotates the drum, etc. in the other direction by continuously operating the operation tool in the other direction. And the operation tool is slightly operated in the other direction to release the stop of the drum and the like and to allow the rotation of the drum and the like in one direction. In addition, the rotation of the drum or the like can be stopped and the stop can be released.

  In the cam clutch device according to the second aspect of the present invention, the cam clutch device is used as a winding device for winding a linear body around a drum or the like so that the linear member can be fed out. The linear body can be wound around a drum or the like, or the linear body can be fed out from the drum or the like.

  In the cam clutch device according to the third aspect of the present invention, the continuous operation in one direction of the first clutch by the operating tool is performed by repeating the second continuous operation after the first continuous operation or the first and second continuous operations. In addition, the continuous operation in the other direction of the second clutch by the operation tool includes the second continuous operation performed after the first continuous operation and the repetition of the first and second continuous operations. Even if the operation tool is not operated, the drum or the like can be rotated in one direction or the other direction even if the operation tool is continuously operated while being stopped.

  In the cam clutch device according to the fourth aspect of the present invention, the first and second cam grooves are formed in one cam so that the first cam groove and the second cam groove are opposite to each other. The apparatus can be downsized and the number of parts of the cam clutch device can be reduced.

  In the partition device according to the fifth aspect of the present invention, when the curtain body is fully deployed, the concept of the front side and the rear side of the curtain body is wiped out, so that the operation cord rotates in one direction and rotates in the other direction. Selection becomes unnecessary, and the curtain can be operated by operating the portion of the operation code closer to the operator. As a result, even if one operation code is operated from the front side or the back side of the curtain body, a plurality of curtain bodies can be expanded or lifted.

  In the double-screen solar shading device according to the sixth aspect of the present invention, even if the rotation of the rear-curtain shaft portion or the front-curtain shaft portion changes from one direction to the other direction, one cam clutch device and one It can be handled with an operation code. That is, by operating one operation code, one cam clutch device functions, and the front curtain and the rear curtain can be folded up simultaneously or in such a manner that only the front curtain or the rear curtain can be unfolded.

It is an expanded view of the cylindrical cam which shows operation | movement of a cam clutch apparatus when the operation code of the partition apparatus of 1st Embodiment of this invention is pulled down from the front side of a curtain body. FIG. 7 is a developed view of a cylindrical cam showing the operation of the cam clutch device when the operation code of the partition device is pulled down from the back side of the curtain body. It is a principal part fracture front view of the partition device. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is a perspective view of the cylindrical cam of the cam clutch device. It is the BB sectional view taken on the line of FIG. 7 which shows the cam clutch apparatus. It is CC sectional view taken on the line of FIG. 6 which shows the cam clutch apparatus. It is D arrow line view of FIG. It is an expanded view of the cylindrical cam which shows operation | movement of the cam clutch apparatus when operating the operation code of the double screen solar radiation shielding apparatus of 2nd Embodiment of this invention, and simultaneously expand | deploying or folding up a front curtain and a rear curtain. It is an expanded view of the cylindrical cam which shows operation | movement of a cam clutch apparatus when operating the operation code | cord | chord of the double screen solar radiation shielding apparatus, and unfolding or folding up only the front curtain. It is the EE sectional view taken on the line of FIG. 14 which shows the state of a drum and a raising / lowering cord when all the front curtains and rear curtains are expand | deployed. FIG. 16 is a cross-sectional view taken along the line FF in FIG. 15 showing a state of the drum and the lifting / lowering cord when the front curtain and the rear curtain are all folded up. FIG. 17 is a cross-sectional view taken along the line GG in FIG. 16 showing a state of the drum and the lifting / lowering cord when the rear curtain is fully developed and the front curtain is folded up. It is a side view of the solar radiation shielding apparatus which shows the state which expand | deployed all the front curtains and the rear curtains. It is a side view of the solar radiation shielding apparatus which shows the state which folded up all the front curtains and the rear curtains. It is a side view of the solar radiation shielding apparatus which shows the state which unfolded all the rear curtains and folded up the front curtain. It is the HH sectional view taken on the line of FIG. 18 which shows the cam clutch apparatus. It is the II sectional view taken on the line of FIG. 17 which shows the cam clutch apparatus. It is a perspective view of the cylindrical cam of the cam clutch device.

Next, an embodiment for carrying out the present invention will be described with reference to the drawings.
<First Embodiment>
As shown in FIGS. 3 and 4, the partition device 10 includes a head rail 11 attached to an indoor ceiling, a rotating shaft 12 provided in the head rail 11 so as to extend in the longitudinal direction of the rail 11, A winding drum 13 fitted to the rotary shaft 12, a lifting cord 14 that is suspended from the winding drum 13 and can be wound around the winding drum 13 and can be fed out from the winding drum 13, and the upper end of the head rail 11. A shield member 16 which is attached to the rotary shaft 14 and wound up or unfolded by winding or unwinding the lifting / lowering cord 14, and the rotation of the winding drum 13 provided in the rotating shaft 12 in one direction or the other direction. And a cam clutch device 17 that performs switching such as stopping. The rotating shaft 12 is rotatably attached to the head rail 11. In this embodiment, three winding drums 13 are provided, and one flexible lifting / lowering cord 14 is suspended from each winding drum 13. In addition, one operation pulley (not shown) is fitted to one end of the rotating shaft 12 so as to be positioned at the end of the head rail 11. An endless operation cord 18 is wound around the operation pulley, and the operation pulley is configured to be rotatable by operating the operation cord 18 up and down (FIGS. 3 and 8). The rotating shaft 12 and the take-up drum 13 are rotated by the rotation of the operation pulley, whereby the elevating cord 14 is wound around the take-up drum 13 or fed out from the take-up drum 13.

  The shielding member 16 includes two pitch keep cords 16a suspended from the head rail 11, and a plurality of horizontal members supported parallel to the head rail 11 with a predetermined pitch in the vertical direction by the pitch keep cords 16a. 16b and a plurality of curtains 16c whose upper edges are attached to the horizontal members 16b and are suspended (FIGS. 3 and 8). The upper edge of the curtain body 16c is suspended from both sides of each horizontal member 16b, that is, two curtain bodies 16c are suspended for each horizontal member 16b. The height of the curtain body 16c is longer than the pitch of the horizontal member 16b supported by the pitch keep cord 16a. Thus, when the curtain body 16c is unfolded, the lower edge of each curtain body 16c overlaps with the upper edge of the lower curtain body 16c so that no gap is generated between the curtain bodies 16c. Further, the elevating cord 14 suspended from the winding drum 13 passes through the plurality of horizontal members 16b and is then coupled to the lowermost horizontal member 16b. Further, the upper edge of the uppermost curtain body 16 c is attached to the head rail 11. The endless operation cord 18 is provided in the shape of an ellipse extending in the vertical direction at the end of the partition device 10, and approximately one half of the operation cord 18 is exposed on the front side of the deployed plurality of curtains 16c, while the other Is configured so as to be positioned on the back side of the deployed plurality of curtains 16c (FIG. 8).

  On the other hand, the cam clutch device 17 rotates the winding drum 13 in one direction by pulling down the operation cord 18 connected to the winding drum 13 via the rotary shaft 12 and the winding pulley in one direction or the other direction. Alternatively, the rotation of the winding drum 13 is stopped by rotating in the other direction and stopping the operation of the operation cord 18 (FIGS. 3, 4, and 8). That is, the cam clutch device 17 is used as a winding device for winding the lifting / lowering cord 14 on the winding drum 13 of the partition device 10 so as to be able to be fed out. The cam clutch device 17 serving as the winding device operates the operation cord 18 to rotate the winding drum 13 in one direction or the other direction, thereby feeding the lifting / lowering cord 14 and operating the operation cord 18 to operate the winding drum. The lifting / lowering cord 14 is wound up by rotating 13 in the other direction or one direction.

  As shown in FIGS. 1, 2, and 5 to 7, the cam clutch device 17 is fitted to the rotary shaft 12 and has a single cam groove 21 and a second cam groove 22 formed on the outer peripheral surface. A cylindrical cam 19, a case 23 formed with one guide groove 23 a attached to the head rail 11 so as to accommodate the cylindrical cam 19 and extending in the axial direction of the rotary shaft 12, and the first cam groove 21 and the guide groove 23 a A first rolling element 31 that rolls in a space where the second cam groove 22 and the guide groove 23a overlap, and a second rolling element 32 that rolls in a space where the second cam groove 22 and the guide groove 23a overlap. The cam clutch device 17 includes a first clutch 41 and a second clutch 42. The first clutch 41 is formed in the first cam groove 21 formed on the outer peripheral surface of the cylindrical cam 19, the guide groove 23a formed in the case 23, and the space where the first cam groove 21 and the guide groove 23a overlap. It has the said 1st rolling element 31 to roll. The second clutch 42 is formed in the space where the second cam groove 22 formed on the outer peripheral surface of the cylindrical cam 19, the guide groove 23a formed in the case 23, and the second cam groove 22 and the guide groove 23a overlap. And the above-mentioned second rolling element 32. 1 and 2, the first and second rolling elements 31 and 32 are depicted as moving in the first and second cam grooves 21 and 22. The rolling elements 31 and 32 only move in the axial direction in the guide groove 23a formed in the case 23, and the cylindrical cam 19 rotates in the direction opposite to the solid line arrow. 1 (a) and FIG. 2 (a) indicates the direction of rotation of the cylindrical cam 19 when the portion of the operation cord 18 positioned on the front side of the curtain body 16c is pulled down, and FIG. 1 (a). 2A is the rotation direction of the cylindrical cam 19 when the portion of the operation cord 18 located on the back side of the curtain body 16c is pulled down.

  As shown in detail in FIGS. 1, 2, and 5, the first cam groove 21 is an endless first end groove 21 a formed on the outer circumferential surface of the cylindrical cam 19 so as to extend in the circumferential direction of the cylindrical cam 19. And a circle of the cylindrical cam 19 between the endless first middle groove 21b formed in the circumferential direction of the cylindrical cam 19 on the central outer peripheral surface of the cylindrical cam 19, and the first end groove 21a and the first middle groove 21b. One end is formed between the first connecting groove 21c and the first middle groove 21b, which is formed extending in the circumferential direction and has one end connected to the first end groove 21a and the other end connected to the first middle groove 21b. Is connected to the first connecting groove 21c, the other end is connected to the first middle groove 21b, and a substantially V-shaped first V-shaped groove 21d projecting in the direction of the broken-line arrow in FIGS. 1 (a) and 2 (a). And a first recess 21e formed in a corner portion in the middle of the first V-shaped groove 21d. The first connecting groove 21c is formed in a counterclockwise spiral shape from the first end groove 21a toward the first middle groove 21b. The first end groove 21a is formed with a first outer bay portion 21f that is curved toward one end of the cylindrical cam 19, and the connecting portion of the first connecting groove 21c to the first end groove 21a is the first end groove 21a. It is formed so as to coincide with one end of the outer bay portion 21f. The first end groove 21a and the first connection groove 21c are connected so that the first end groove 21a and the first connection groove 21c are substantially in a straight line. The first inner groove 21b is formed with a first inner bay portion 21g that is curved toward the other end of the cylindrical cam 19, and the connecting portion of the first V-shaped groove 21d to the first inner groove 21b is the first inner bay portion of the first intermediate groove 21b. It is formed to coincide with one end of 21g. The first middle groove 21b and the first V-shaped groove 21d are connected such that the first middle groove 21b and the end of the first V-shaped groove 21d are substantially in a straight line. One end of the first V-shaped groove 21d is connected to the first connecting groove 21c in the vicinity of the connecting portion between the first end groove 21a and the first connecting groove 21c, and the other end of the first V-shaped groove 21d is connected to the first middle groove 21b and the first connecting groove 21c. It is connected to the first middle groove 21b in the vicinity of the connecting portion with the one connecting groove 21c. The first recess 21e is formed in a size that can accommodate approximately half of the first rolling element 31. The remaining half of the first rolling element 31 is accommodated in the guide groove 23a. Furthermore, the first V-shaped groove 21d is slightly deformed so that the first rolling element 31 accommodated in the first recess 21e is guided to the first connecting groove 21c instead of the first middle groove 21b by the rotation of the cylindrical cam 19. Formed.

  As shown in detail in FIGS. 1, 2, and 5, the second cam groove 22 is formed side by side on the outer peripheral surface of the cylindrical cam 19 so as to be opposite to the first cam groove 21. Specifically, the second cam groove 22 includes an endless second end groove 22 a formed on the outer peripheral surface of the other end side of the cylindrical cam 19 and extending in the circumferential direction of the cylindrical cam 19, and a central outer periphery of the cylindrical cam 19. An endless second middle groove 22b formed on the surface extending in the circumferential direction of the cylindrical cam 19 and a circumferential end of the cylindrical cam 19 formed between the second end groove 22a and the second middle groove 22b. Is connected to the second end groove 22a and the other end is connected to the second middle groove 22b, and one end is connected to the second connection groove 22c between the second connection groove 22c and the second middle groove 22b. The other end is connected to the second middle groove 22b and further protrudes in the direction of the one-dot chain line arrow in FIGS. 2nd recessed part 22e formed in the corner part in the middle. The second connecting groove 22c is formed in a counterclockwise spiral shape from the second end groove 22a toward the second middle groove 22b. The second end groove 22a is formed with a second outer bay portion 22f that curves to the other end side of the cylindrical cam 19, and the connection portion of the second connecting groove 22c to the second end groove 22a is the second end groove 22a. 2 It is formed to coincide with one end of the outer bay portion 22f. The second end groove 22a and the second connection groove 22c are connected so that the second end groove 22a and the second connection groove 22c are substantially in a straight line. The second inner groove 22b is formed with a second inner bay 22g that is curved toward one end of the cylindrical cam 19, and the connecting portion of the second V-shaped groove 22d to the second inner groove 22b is the second inner bay 22g of the second intermediate groove 22b. Formed to coincide with one end. The second middle groove 22b and the second V-shaped groove 22d are connected such that the second middle groove 22b and the end of the second V-shaped groove 22d are substantially in a straight line. One end of the second V-shaped groove 22d is connected to the second connecting groove 22c in the vicinity of the connecting portion between the second end groove 22a and the second connecting groove 22c, and the other end of the second V-shaped groove 22d is connected to the second middle groove 22b. It is connected to the second middle groove 22b in the vicinity of the connecting portion with the two connecting grooves 22c. The 2nd recessed part 22e is formed in the magnitude | size which can accommodate substantially half of the 2nd rolling element 32. FIG. The remaining half of the second rolling element 32 is accommodated in the guide groove 23a. Further, the second V-shaped groove 22d is slightly deformed so that the second rolling element 32 accommodated in the second recess 22e is guided to the second connecting groove 22c instead of the second middle groove 22b by the rotation of the cylindrical cam 19. Formed. The first and second rolling elements 31 and 32 are formed of metal or plastic spheres. Reference numeral 24 in FIG. 4 denotes a speed controller having a function as a centrifugal brake for decelerating when the rotational speed of the rotary shaft 12 becomes excessive.

  The first clutch 41 continuously rotates the take-up drum 13 in one direction by continuously operating the operation cord 18 in one direction with respect to the take-up drum 13 that is stopped, and the stopped winding drum 13. The operation cord 18 is slightly operated in one direction with respect to the take-up drum 13 to release the stop of the take-up drum 13 and allow the take-up drum 13 to rotate in the other direction. The second clutch 42 continuously rotates the winding drum 13 in the other direction by continuously operating the operation cord 18 in the other direction with respect to the winding drum 13 that is stopped, and the stopped winding drum 13. The operation cord 18 is slightly operated in the other direction with respect to the take-up drum 13 to release the stop of the take-up drum 13 and allow the take-up drum 13 to rotate in one direction.

  Here, the continuous operation of the first clutch 41 in one direction by the operation cord 18 is performed after the operation cord 18 is pulled down in one direction (the portion of the operation cord 18 positioned on the front side of the curtain body 16c is pulled down). A second continuous operation for stopping the rotation of the take-up drum 13 after the operation cord 18 is pulled down in one direction after the first continuous operation. Including. It also includes the subsequent repetition of the first and second continuous operations. On the other hand, the continuous operation of the second clutch 42 in the other direction by the operation cord 18 is performed after the operation cord 18 is lowered in the other direction (after the portion of the operation cord 18 located on the back side of the curtain body 16c is lowered). The first continuous operation for stopping the rotation of the winding drum 13 and the second continuous operation for stopping the rotation of the winding drum 13 after lowering the operation cord 18 in the other direction after the first continuous operation; including. It also includes the subsequent repetition of the first and second continuous operations.

  The usage method of the partition apparatus 10 comprised in this way is demonstrated. When a portion of the operation cord 18 located on the front side of the curtain body 16c is operated in one direction (down operation) with all the curtain bodies 16c deployed, the operation pulley, the rotary shaft 12 and the cylindrical cam 19 are moved. Since it rotates in one direction, the first rolling element 31 of the first clutch 41 rolls in the first intermediate groove 21b, and the second rolling element 32 of the second clutch 42 rolls in the second end groove 22a ( FIG. 1 (a)). For this reason, since the winding drum 13 also rotates in one direction, the lifting / lowering cord 14 is wound around the winding drum 13 and the plurality of curtains 16c are lifted up. Here, once the operation of lowering the operation cord 18 is stopped, the first rolling element 31 enters the first V-shaped groove 21d from the first middle groove 21b and is then accommodated in the first recess 21e, so that the rotation of the cylindrical cam 19 relative to the case 23 is performed. Stops. At this time, the second rolling element 32 enters the second connecting groove 22c from the second end groove 22a. Further, although a load is applied in the direction in which the lifting / lowering cord 14 is fed out from the winding drum 13 by its own weight such as the curtain body 16c, the first rolling element 31 is accommodated in the first recess 21e. Rotation in the direction is prevented. As a result, the plurality of curtain bodies 16c are not unfolded even when the operation cord 18 is released, and the plurality of curtain bodies 16c are temporarily fixed at the position where the operation code 18 has been lowered. When the portion of the operation cord 18 located on the front side of the curtain body 16c is pulled down again, the first rolling element 31 of the first clutch 41 passes from the first V-shaped groove 21d through the first connecting groove 21c to the first middle groove 21b. The second rolling element 32 enters the second end groove 22a from the second connection groove 22c (FIG. 1C). In the same manner as described above, the first rolling element 31 rolls in the first intermediate groove 21b, the second rolling element 32 rolls in the second end groove 22a (FIG. 1A), and the lifting / lowering cord 14 is The plurality of curtains 16c are rolled up by being wound around the winding drum 13.

  When unfolding the plurality of curtains 16c that have been lifted, the portion of the operation cord 18 located on the front side of the curtain 16c is slightly operated in one direction (slightly lowered). By this operation, the first rolling element 31 enters the first coupling groove 21c from the first V-shaped groove 21d, and the second rolling element 32 rolls in the second coupling groove 22c (FIG. 1 (c)). When the slight lowering operation of the operation cord 18 is stopped, a load is applied in the direction in which the lifting / lowering cord 14 is fed out of the take-up drum 13 due to the dead weight of the curtain body 16c and the like. One rolling element 31 enters the first end groove 21a from the first connecting groove 21c and rolls in the first end groove 21a, and the second rolling element 32 enters the second middle groove 22b from the second connecting groove 22c. Since it rolls in the second middle groove 22b (FIG. 1 (d)), the winding drum 13 rotates in the other direction, that is, the winding drum 13 rotates in the direction in which the lifting / lowering cord 14 is fed out. As a result, if the force for gripping the operation cord 18 is kept relaxed, the plurality of curtains 16c are all deployed by the dead weight of the curtain 16c and the like. The slight lowering operation of the operation cord 18 means an operation pulley outer peripheral surface corresponding to a length in which the first rolling element 31 enters the first connection groove 21c from the first recess 21e through the first V-shaped groove 21d. This is a pulling-down operation that is equal to or longer than the length of the arc and less than the length of one round on the outer peripheral surface of the operation pulley corresponding to the length of one rotation of the cylindrical cam 19.

  On the other hand, when a portion of the operation cord 18 located on the back side of the curtain body 16c is operated in the other direction (downward operation) with all the curtain bodies 16c deployed, the operation pulley, the rotary shaft 12 and the cylindrical cam are operated. 19 rotates in the other direction, the second rolling element 32 of the second clutch 42 rolls in the second intermediate groove 22b, and the first rolling element 31 of the first clutch 41 rolls in the first end groove 21a. (FIG. 2A). For this reason, since the winding drum 13 also rotates in the other direction, the lifting / lowering cord 14 is wound around the winding drum 13 and the plurality of curtains 16c are pulled up. Here, once the operation of lowering the operation cord 18 is stopped, the second rolling element 32 enters the second V-shaped groove 22d from the second middle groove 22b and is then accommodated in the second recess 22e, so that the rotation of the cylindrical cam 19 relative to the case 23 is performed. Stops. At this time, the first rolling element 31 enters the first connecting groove 21c from the first end groove 21a. Further, although a load is applied in the direction in which the lifting / lowering cord 14 is fed out from the winding drum 13 by its own weight such as the curtain body 16c, the second rolling element 32 is accommodated in the second recess 22e. Rotation in the direction is prevented. As a result, the plurality of curtain bodies 16c are not unfolded even when the operation cord 18 is released, and the plurality of curtain bodies 16c are temporarily fixed at the position where the operation code 18 has been lowered. When the portion of the operation cord 18 located on the back side of the curtain body 16c is pulled down again, the second rolling element 32 of the second clutch 42 passes from the second V-shaped groove 22d through the second connecting groove 22c to the second middle groove 22b. The first rolling element 31 of the first clutch 41 enters the first end groove 21a from the first connection groove 21c (FIG. 2 (c)). Similarly to the above, the second rolling element 32 rolls in the second middle groove 22b, the first rolling element 31 rolls in the first end groove 21a (FIG. 2 (a)), and the lifting / lowering cord 14 is The plurality of curtains 16c are rolled up by being wound around the winding drum 13.

  When unfolding the plurality of curtains 16c that have been lifted up, the portion of the operation cord 18 located on the back side of the curtain 16c is slightly operated in the other direction (slightly lowered). By this operation, the second rolling element 32 enters the second coupling groove 22c from the second V-shaped groove 22d, and the first rolling element 31 rolls in the first coupling groove 21c (FIG. 2 (c)). When the slight lowering operation of the operation cord 18 is stopped, a load is applied in the direction in which the lifting / lowering cord 14 is fed out of the take-up drum 13 due to the dead weight of the curtain body 16c and the like. Two rolling elements 32 enter the second end groove 22a from the second connecting groove 22c and roll in the second end groove 22a, and the first rolling element 31 enters the first middle groove 21b from the first connecting groove 21c. Since it rolls in the first middle groove 21b (FIG. 2D), the winding drum 13 rotates in one direction, that is, the winding drum 13 rotates in the direction in which the lifting / lowering cord 14 is fed out. As a result, if the force for gripping the operation cord 18 is kept relaxed, the plurality of curtains 16c are all deployed by the dead weight of the curtain 16c and the like. The slight lowering operation of the operation cord 18 is an operation pulley outer peripheral surface corresponding to a length in which the second rolling element 32 enters the second connecting groove 22c from the second recess 22e through the second V-shaped groove 22d. This is a pulling-down operation that is equal to or longer than the length of the arc and less than the length of one round on the outer peripheral surface of the operation pulley corresponding to the length of one rotation of the cylindrical cam 19.

  When all the curtains 16c are developed in this way, the concept of the front side and the back side of the curtain body 16c is wiped out, so that selection of rotation in one direction and rotation in the other direction of the operation cord 18 becomes unnecessary. The curtain body 16c can be operated by operating the part of the operation cord 18 located on the front side of the curtain body 16c or the part located on the back side of the curtain body 16c. As a result, even if one operation cord 18 is operated from the front side or the back side of the curtain body 16c, the plurality of curtain bodies 16c can be expanded or lifted.

<Second Embodiment>
9 to 19 show a second embodiment of the present invention. 9 to 19, the same reference numerals as those in FIGS. 1 to 8 denote the same components. In this embodiment, the cam clutch device 17 is used as a winding device for the double-screen solar shading device 60 (FIGS. 11 to 13). The solar shading device 60 includes a head rail 61 attached to a wall surface or ceiling of a room, and a front curtain 62 and a rear curtain 63 each having an upper end attached to the head rail 61 and having a width substantially the same as the length of the head rail 61. And a front curtain elevating cord 64 and a rear curtain elevating cord 66 that are suspended from the head rail 61 so as to be movable up and down and are connected to the front curtain 62 and the rear curtain 63, respectively (FIGS. 14 to 16). The front curtain 62 is attached to the front surface of the head rail 61, and the rear curtain 63 is attached to the back surface of the head rail 61.

  A front curtain drum 67 is provided in the front portion of the head rail 61, and the front curtain lifting / lowering cord 64 is wound around the front curtain drum 67 by rotating the front curtain drum 67 in one direction or the other direction. Or is configured to be fed out from the front curtain drum 67 (FIGS. 11 to 13). Specifically, a front curtain shaft portion 68 extending in the longitudinal direction of the rail 61 is provided at the front portion in the head rail 61. The front-curtain shaft portion 68 has a front-curtain rod 69 and a front-curtain screw rod 71. The front-curtain rod 69 and the front-curtain screw rod 71 are aligned with each other and face each other. Provided. The front curtain rod 69 is composed of a rectangular column part 69a having a relatively long transverse section and a relatively short cylindrical part 69b, and the rectangular column part 69a and the cylindrical part 69b are integrally formed concentrically. The base end of the cylindrical portion 69 b is rotatably attached to one end of the head rail 61. Thus, the prism portion 69 a extends inward of the head rail 61, and the cylindrical portion 69 b extends outside the head rail 61. Further, the front curtain screw rod 71 is attached to the other end of the head rail 61 so as not to rotate, and the front curtain screw rod 71 is provided so that the front end thereof extends inward of the head rail 61. The front curtain drum 67 is formed in a relatively large-diameter cylindrical shape with both ends closed. One end of the front curtain drum 67 is non-rotatably fitted in the rectangular column portion 69a of the front curtain rod 69 and is slidable in the axial direction, and the other end is screwed to the front curtain screw rod 71. The upper ends of the two front curtain elevating cords 64, 64 are attached to the outer peripheral surface of the front curtain drum 67 at a predetermined interval.

  On the other hand, a rear curtain drum 72 is provided in the rear portion of the head rail 61, and the rear curtain lifting / lowering cord 66 is wound around the rear curtain drum 72 by rotating the rear curtain drum 72 in one direction or the other direction. It is configured to be taken out or fed out from the rear curtain drum 72 (FIGS. 11 to 13). Specifically, a rear curtain shaft 73 extending in the longitudinal direction of the rail 61 is provided at the rear of the head rail 61. The rear-curtain shaft 73 has a rear-curtain rod 74 and a rear-curtain screw rod 76, and the rear-curtain rod 74 and the rear-curtain screw rod 76 are provided so that their axes coincide and face each other. It is done. The rear curtain rod 74 is composed of a rectangular column portion 74a having a relatively long transverse section and a relatively short cylindrical portion 74b, and the rectangular column portion 74a and the cylindrical portion 74b are formed concentrically. A cam clutch device 17 and a speed controller 24 are provided at the base of the prism portion 74a. The cam clutch device 17 is configured in the same manner as the cam clutch device of the first embodiment except that the cylindrical cam 19 is fitted to the rectangular column portion 74a of the rear curtain rod 74 (FIGS. 9 and 10). And FIGS. 17 to 19). The base end of the cylindrical portion 74 b is rotatably attached to one end of the head rail 61. As a result, the cam clutch device 17 and the speed controller 24 are positioned in the head rail 61, the prism portion 74a extends inward of the head rail 61, and the cylindrical portion 74b extends out of the head rail 61. The rear curtain screw rod 76 is attached to the other end of the head rail 61 so as not to rotate, and the front end of the rear curtain screw rod 76 extends inward of the head rail 61. The rear curtain drum 72 is formed in a relatively large diameter cylindrical shape with both ends closed. Then, one end of the rear curtain drum 72 is fitted into the rectangular column portion 74 a of the rear curtain rod 74 through the sleeve 77, and the other end is screwed to the rear curtain screw rod 76. The sleeve 77 includes a male screw part 77a that is screwed into one end of the rear curtain drum 72, a head part 77b that is formed integrally with the male screw part 77a and has an outer diameter substantially the same as the outer diameter of the rear curtain drum 72, The prism portion 74a of the rear curtain shaft portion 73 has a square hole 77c that is non-rotatable and slidably fitted in the axial direction. Further, the upper ends of the two rear curtain elevating cords 66, 66 are attached to the outer peripheral surface of the rear curtain drum 72 at a predetermined interval.

  9 and 10, the first and second rolling elements 31 and 32 of the cam clutch device 17 are depicted as moving in the first and second cam grooves 21 and 22. The first and second rolling elements 31 and 32 only move in the axial direction within the guide groove 23a formed in the case 23, and the cylindrical cam 19 rotates in the direction opposite to the solid line arrow. The broken line arrows in FIGS. 9A and 10A indicate the rotation direction of the cylindrical cam 19 when the portion of the operation cord 84 located on the rear curtain 63 side is pulled down, and FIGS. A dotted line arrow in FIG. 10A indicates the rotation direction of the cylindrical cam 19 when a portion of the operation cord 84 located on the front curtain 62 side is pulled down.

  A front curtain gear 78 is fitted to the tip of the cylindrical portion 74b of the front curtain shaft portion 68, and a rear curtain gear 79 is fitted to the tip of the cylindrical portion 74b of the rear curtain shaft portion 73 (see FIG. 11 to 16). These gears 78 and 79 are formed in the same shape and are accommodated in a cap 80 attached to one end of the head rail 61. A drive shaft 81 is rotatably held between the head rail 61 and the cap 80, and a drive gear 82 and an operation pulley 83 are fitted to the drive shaft 81. The drive gear 82 meshes with the front curtain gear 78 and the rear curtain gear 79, and a single operation cord 84 is wound around the operation pulley 83. The two front curtain elevating cords 64, 64 are respectively suspended from the front curtain drum 67 and attached to the rear surface of the front curtain 62 at a predetermined interval in the vertical direction. After being inserted vertically through 86 and routed vertically downward, each is connected to a front curtain weight bar 87 attached to the lower end of the front curtain 62 (FIGS. 14 to 16). The two rear curtain elevating cords 66 and 66 are respectively suspended from the rear curtain drum 72 and inserted into an insertion hole (not shown) of the rear curtain 63, and then vertically on the rear surface of the rear curtain 63. It is inserted through a plurality of rear curtain cord rings 88 that are attached at a predetermined interval, routed vertically downward, and further connected to a rear curtain weight bar 89 attached to the lower end of the rear curtain 63. In this embodiment, the front-curtain screw rod 71 and the rear-curtain screw rod 76 are right-hand threads, and the male thread portion 77a of the sleeve 77 is a left-hand thread. The thread pitch of the front curtain screw rod 71 and the rear curtain screw rod 76 is formed to be substantially the same as the thickness of the front curtain lifting cord 64 and the rear curtain lifting cord 66.

  The usage method of the double screen solar radiation shielding apparatus 60 comprised in this way is demonstrated. When the front curtain 62 and the rear curtain 63 are all deployed, when the portion of the operation cord 84 located on the rear curtain 63 side is operated in one direction (lowering operation), the operation pulley 83 and the drive gear 82 are moved in the other direction. Since the rear curtain gear 79 and the cylindrical cam 19 rotate in one direction, the first rolling element 31 of the first clutch 41 rolls in the first intermediate groove 21b and the second rolling element of the second clutch 42. 32 rolls in the second end groove 22a (FIG. 9A). For this reason, since the rear curtain rod 74 rotates in one direction, the sleeve 77 rotates in a direction in which the male screw portion 77a is screwed into the rear curtain drum 72, and the rear curtain drum 72 is rotated by the rear curtain screw rod 76. Rotate in the direction to exit. As a result, the rear curtain drum 72 rotates in one direction and moves in a direction approaching the cam clutch device 17, so that the rear curtain lifting / lowering cord 66 is wound around the rear curtain drum 72 in a single spiral shape. The curtain 63 is folded up (FIGS. 12 and 15). As the operation cord 84 is pulled down, the front curtain gear 78, the front curtain rod 69, and the front curtain drum 67 are driven by the drive gear 82 and rotate in the same direction as the cylindrical cam 19, that is, in one direction. The front-curtain drum 67 rotates in a direction to come out of the front-curtain screw rod 71. For this reason, the front curtain drum 67 rotates in one direction and moves in a direction approaching the front curtain gear 78, so that the front curtain lifting / lowering cord 64 is wound around the front curtain drum 67 in a single-spiral form. The curtain 62 is folded up (FIGS. 12 and 15).

  Here, once the operation of lowering the operation cord 84 is stopped, the first rolling element 31 enters the first V-shaped groove 21d from the first middle groove 21b and is then accommodated in the first recess 21e, so that the rotation of the cylindrical cam 19 relative to the case 23 is performed. Stops. At this time, the second rolling element 32 enters the second connecting groove 22c from the second end groove 22a. Further, although the front curtain 62 and the rear curtain 63 and the like are subjected to their own weights in the direction in which the front curtain elevating cord and the rear curtain elevating cord are fed out from the front curtain drum 67 and the rear curtain drum 72, respectively, Since the moving body 31 is accommodated in the first recess 21e, rotation of the front curtain drum 67 and the rear curtain drum 72 in the other direction is prevented. As a result, the front curtain 62 and the rear curtain 63 are not unfolded even if the operation cord 84 is released, and the front curtain 62 and the rear curtain 63 are temporarily fixed at the position where the operation code 84 has been lowered. Is done. When the portion of the operation code 84 located on the rear curtain 63 side is pulled down again, the first rolling element 31 of the first clutch 41 enters the first middle groove 21b from the first V-shaped groove 21d through the first connecting groove 21c. The second rolling element 32 enters the second end groove 22a from the second connection groove 22c (FIG. 9C). Similarly to the above, the first rolling element 31 rolls in the first middle groove 21b, the second rolling element 32 rolls in the second end groove 22a (FIG. 9 (a)), and the rear curtain lift The cord 66 is wound around the rear curtain drum 72 and the rear curtain 63 is folded up, and the front curtain elevating cord 64 is wound around the front curtain drum 67 and the front curtain 62 is folded up (see FIG. 12 and FIG. 12). FIG. 15).

  When the folded front curtain 62 and rear curtain 63 are unfolded, a portion of the operation cord 84 located on the front curtain 62 side is slightly operated in one direction (slightly lowered). By this operation, the first rolling element 31 enters the first connecting groove 21c from the first V-shaped groove 21d, and the second rolling element 32 rolls in the second connecting groove 22c (FIG. 9C). When the slight lowering operation of the operation cord 84 is stopped, the front curtain lifting cord 64 and the rear curtain lifting cord 66 are moved from the front curtain drum 67 and the rear curtain drum 72 by the weight of the front curtain 62 and the rear curtain 63. When a load is applied in the extending direction and the force for gripping the operation cord 84 is loosened, the first rolling element 31 enters the first end groove 21a from the first connecting groove 21c and rolls in the first end groove 21a. The second rolling element 32 enters the second middle groove 22b from the second connecting groove 22c and rolls in the second middle groove 22b (FIG. 9D), so that the front curtain drum 67 and the rear curtain The drum 72 rotates in the other direction, that is, the front curtain drum 67 and the rear curtain drum 72 rotate in the direction in which the front curtain elevating cord 64 and the rear curtain elevating cord 66 are fed out. As a result, if the force for gripping the operation cord 84 is kept relaxed, the front curtain 62 and the rear curtain 63 are all developed by their own weights such as the front curtain 62 and the rear curtain 63 (FIGS. 11 and 14). The slight lowering operation of the operation code 84 is the same as the slight lowering operation of the operation code of the first embodiment.

  On the other hand, when the front curtain 62 and the rear curtain 63 are all unfolded and the part located on the front curtain 62 side of the operation cord 84 is operated in the other direction (lowering operation), the operation pulley 83 and the drive gear 82 become one. Since the rear curtain gear 79 and the cylindrical cam 19 rotate in the other direction, the second rolling element 32 of the second clutch 42 rolls in the second intermediate groove 22b, and the first clutch 41 first The rolling element 31 rolls in the first end groove 21a (FIG. 10A). For this reason, since the rear curtain rod 74 rotates in the other direction, the sleeve 77 rotates in a direction in which the male screw portion 77a is loosened with respect to the rear curtain drum 72. As a result, since only the sleeve 77 rotates and the rear curtain drum 72 does not rotate, the rear curtain lifting / lowering cord 66 is not wound around the rear curtain drum 72 and the rear curtain 63 is unfolded and unfolded. (FIGS. 13 and 16). As the operation cord 84 is pulled down, the front curtain gear 78, the front curtain rod 69, and the front curtain drum 67 are driven by the drive gear 82 and rotate in the same direction as the cylindrical cam 19, that is, in the other direction. The front curtain drum 67 rotates in a direction to be screwed into the front curtain screw rod 71. For this reason, the front curtain drum 67 rotates in the other direction and moves away from the front curtain gear 78, so that the front curtain lifting / lowering cord 64 is wound around the front curtain drum 67 in a single spiral shape. The curtain 62 is folded up (FIGS. 13 and 16).

  Here, once the operation of lowering the operation cord 84 is stopped, the second rolling element 32 enters the second V-shaped groove 22d from the second middle groove 22b and is then accommodated in the second recess 22e, so that the rotation of the cylindrical cam 19 relative to the case 23 is performed. Stops. At this time, the first rolling element 31 enters the first connecting groove 21c from the first end groove 21a. In addition, although a load is applied in the direction in which the front curtain lifting / lowering cord 64 is fed from the front curtain drum 67 by the weight of the front curtain 62 and the like, the second rolling element 32 is accommodated in the second recess 22e. 19 is prevented from rotating in one direction, so that rotation of the front curtain gear 78, the front curtain rod 69, and the front curtain drum 67 in one direction is prevented. As a result, even if the operation cord 84 is released, the front curtain 62 is not unfolded, and the front curtain 62 is temporarily fixed at the position where the operation code 84 has been lowered. When the portion of the operation cord 84 located on the front curtain 62 side is pulled down again, the second rolling element 32 of the second clutch 42 enters the second middle groove 22b from the second V-shaped groove 22d through the second connecting groove 22c. The first rolling element 31 of the first clutch 41 enters the first end groove 21a from the first connection groove 21c (FIG. 10C). Similarly to the above, the second rolling element 32 rolls in the second middle groove 22b, the first rolling element 31 rolls in the first end groove 21a (FIG. 10 (a)), and the rear curtain rod. 72 rotates in the other direction together with the sleeve 77, but the rear curtain drum 72 is not rotated because a load such as the rear curtain 63 is applied to the rear curtain drum 72 via the rear curtain lifting cord 66. The front curtain lifting / lowering cord 64 is rotated in the other direction by driving the front curtain gear 78, the front curtain rod 69, and the front curtain drum 67 by the drive gear 82 by the operation of lowering the operation cord 84. The curtain drum 67 rotates in a direction to be screwed into the front curtain screw rod 71. For this reason, the front curtain drum 67 rotates in the other direction and moves away from the front curtain gear 78, so that the front curtain lifting / lowering cord 64 is wound around the front curtain drum 67 in a single spiral shape. The curtain 62 is folded up (FIGS. 13 and 16). In this way, only the front curtain 62 can be folded up with the rear curtain 63 unfolded (FIG. 16).

  When the folded front curtain 62 is unfolded, a portion of the operation cord 84 located on the front curtain 62 side is slightly operated in the other direction (slightly lowered). By this operation, the second rolling element 32 enters the second connecting groove 22c from the second V-shaped groove 22d, and the first rolling element 31 rolls in the first connecting groove 21c (FIG. 10C). When the slight lowering operation of the operation cord 84 is stopped, a load is applied in the direction in which the front curtain lifting / lowering cord 64 is fed from the front curtain drum 67 by the weight of the front curtain 62 and the like, and the force for gripping the operation cord 84 is increased. When loosened, the second rolling element 32 enters the second end groove 22a from the second connecting groove 22c and rolls in the second end groove 22a, and the first rolling element 31 moves from the first connecting groove 21c to the first middle groove. 21b and rolls in the first middle groove 21b (FIG. 10 (d)), the front curtain drum 67 moves the cylindrical cam 19, the rear curtain gear 79, the drive gear 82, the front curtain gear 78 and the front curtain drum 67. It rotates in one direction via the curtain rod 69, that is, the front curtain drum 67 rotates in the direction in which the front curtain lifting cord 64 is fed out. As a result, if the force for gripping the operation cord 84 is kept relaxed, the front curtain 62 is all deployed due to its own weight. At this time, the rear curtain rod 74 rotates in one direction together with the sleeve 77 as the cylindrical cam 19 rotates in the other direction. Therefore, the male thread 77a of the sleeve 77 is moved in the state where the rear curtain drum 72 does not rotate. It is screwed into the drum 72 for use. The slight lowering operation of the operation code 84 is the same as the slight lowering operation of the operation code of the first embodiment. Thus, even if the rotation of the rear curtain rod 74 of the rear curtain shaft 73 changes from one direction to the other direction, it is possible to cope with one cam clutch device 17 and one operation cord 84. As a result, by operating one operation code 84, the front curtain 62 and the rear curtain 63 can be folded up at the same time or in such a manner that only the front curtain 62 can be unfolded.

  In the first embodiment, a plurality of curtains are hung at predetermined intervals by a pitch keeping cord as a shielding member, and these curtains are sequentially lifted from the lower side by a lifting cord. However, one curtain body may be suspended from the head rail, and this curtain body may be folded up from the lower side by an elevating cord. Moreover, in the said 1st Embodiment, although comprised so that a raising / lowering cord could be wound around a winding drum so that feeding could be carried out, you may comprise so that a raising / lowering cord may be wound around a winding shaft so that feeding may be possible. In the second embodiment, the front curtain elevating cord is wound around the front curtain drum so that it can be fed out, and the rear curtain elevating cord is wound around the rear curtain drum so that it can be fed out. The front curtain lifting / lowering cord may be wound around the front curtain winding shaft so as to be fed out, and the rear curtain lifting / lowering cord may be wound around the rear curtain winding shaft so as to be fed out. Further, in the first embodiment, the cam clutch device is used as a winding device for the partition device, and in the second embodiment, the cam clutch device is used as a winding device for the double screen solar shading device. The cam clutch device may be used as a winding device such as a winch or a crane. Furthermore, in the second embodiment, the cam clutch device is provided on the rear curtain shaft, but the cam clutch device may be provided on the front curtain shaft. In this case, the front curtain and the rear curtain can be folded up so that they can be unfolded simultaneously, and only the rear curtain can be folded up so as to be unfoldable.

10 Partitioning device 12 Rotating shaft 13 Winding drum (drum)
14 Lifting cord (linear body)
17 Cam clutch device 18, 84 Operation code (operation tool)
19 Cylindrical cam (cam)
21 First Cam Groove 22 Second Cam Groove 41 First Clutch 42 Second Clutch 60 Double Screen Solar Shading Device 62 Front Curtain 63 Rear Curtain 64 Front Curtain Lifting Cord (Linear Body)
66 Lifting cord for rear curtain (Linear body)
67 Drum for the front curtain
68 Front Curtain Shaft 72 Rear Curtain Drum (Drum)
73 Rear curtain shaft

Claims (6)

The drum (13, 67, 72) or the shaft is rotated in one direction by pulling down the drum (13, 67, 72) or the operation tool (18, 84) connected to the shaft in one direction or the other direction. A cam clutch device configured to stop the rotation of the drum (13, 67, 72) or the shaft by stopping the operation of the operation tool (18, 84) while rotating in the other direction,
By continuously operating the operation tool (18, 84) in one direction with respect to the stopped drum (13, 67, 72) or shaft, the drum (13, 67, 72) or shaft is moved in one direction. The drum (13, 67, 72) is operated by slightly operating the operating tool (18, 84) in one direction with respect to the drum (13, 67, 72) or the shaft that is continuously rotated and stopped. ) Or the first clutch (41) for releasing the stop of the shaft and allowing the drum (13, 67, 72) or the shaft to rotate in the other direction;
The drum (13, 67, 72) or shaft is moved in the other direction by continuously operating the operation tool (18, 84) in the other direction with respect to the stopped drum (13, 67, 72) or shaft. The drum (13, 67, 72) is operated by slightly operating the operating tool (18, 84) in the other direction with respect to the drum (13, 67, 72) or the shaft that is continuously rotated and stopped. Or a second clutch (42) that releases the stop of the shaft and allows the drum (13, 67, 72) or the shaft to rotate in one direction.   The drum (13, 67, 72) or the linear body (14, 64, 66) having flexibility on the shaft is used as a winding device for rewinding, and the winding device is used for the operation. The linear body (14, 64, 66) is fed out by rotating the drum (13, 67, 72) or the shaft in one direction or the other direction with a tool (18, 84), and the operation tool (18, 84). 2. The cam clutch according to claim 1, wherein the linear body (14, 64, 66) is wound by rotating the drum (13, 67, 72) or the shaft in the other direction or one direction. apparatus. The continuous operation of the first clutch (41) in one direction by the operation tool (18, 84) is performed by rotating the drum (13, 67, 72) or the shaft after the operation tool (18, 84) is pulled down. A first continuous operation for stopping the operation, and a second continuous operation for stopping the rotation of the drum (13, 67, 72) or the shaft after lowering the operation tool (18, 84) after the first continuous operation. Or further comprising repeating subsequent first and second continuous operations,
The continuous operation of the second clutch (42) in the other direction by the operation tool (18, 84) is performed by rotating the drum (13, 67, 72) or the shaft after the operation tool (18, 84) is pulled down. A first continuous operation for stopping the operation, and a second continuous operation for stopping the rotation of the drum (13, 67, 72) or the shaft after lowering the operation tool (18, 84) after the first continuous operation. The cam clutch device according to claim 1, further comprising repeating the first and second continuous operations thereafter.   The first clutch (41) has a first cam groove (21) formed in the cam (19), and the second clutch (42) is formed in a second cam groove (22) formed in the cam (19). ), And the first and second cam grooves (21, 22) are formed in the cam (19) so that the first cam groove (21) and the second cam groove (22) are opposite to each other. The cam clutch device according to claim 1 or 3, wherein the cam clutch device is formed.   The curtain (16c) can be unfolded by operating the operation cord (18), which is the operation tool, and winding the lifting / lowering cord (14) on the winding drum (13), which is the drum. 5. A cam clutch device (17) according to any one of claims 1 to 4 is provided on a rotary shaft (12) for connecting the operation cord (18) and the winding drum (13). Partitioning device.   The operation cord (84) as the operation tool is operated to wind up the front curtain lifting / lowering cord (64) in the front curtain drum (67) so as to be able to be fed out, and the rear curtain drum as the drum. By winding the rear curtain lifting / lowering cord (66) on (72) so that it can be fed out, the front curtain (62) and the rear curtain (63) can be folded up separately or simultaneously, and the operation cord (84) And either the rear curtain shaft (73) connecting the rear curtain drum (72) or the front curtain shaft (68) connecting the operation cord (84) and the front curtain drum (67). A double-screen solar shading device provided with the cam clutch device (17) according to any one of claims 1 and 4.

Images