JP6586001B2 - Solar shading device - Google Patents

Description

  The present invention relates to a solar radiation shielding device that moves up and down at least one solar radiation shielding material (hereinafter referred to as a shielding material) suspended from a head box by means of a loop-shaped lifting operation code. Here, the solar radiation shielding device is a pleated screen device, a shutter device, a blind device, or the like, and the shielding material is a member that shields solar radiation in these devices, such as a pleated screen, a shutter, or a blind.

  When the solar shading device according to the present invention is applied to a twin-type solar shading device that moves up and down two shielding materials suspended from a head box, two screens are shielded by a single loop-like lifting operation cord. It is possible to switch between raising and lowering any of the materials and to move them up and down independently.

  As such two shielding materials, for example, in a twin-type solar radiation shielding device, an upper shielding material and a lower shielding material arranged in the vertical direction via an intermediate rail, or an indoor shielding material and an outdoor side There is a double shielding material before and after the shielding material.

  Conventionally, in a twin-type solar shading device, the upper shielding material and the lower shielding material arranged in the vertical direction via the intermediate rail are switched and moved up and down by operating a single loop-like lifting operation cord. Is known (see Patent Document 1).

  Further, the indoor and outdoor double shielding materials can be independently pulled up with a single operation cord, and the first shielding material can be lifted by operating one of the operation cords. A first clutch unit and a first stopper unit that can select an operation, a descent operation due to its own weight, and a self-weight drop prevention operation, and a second shielding material pull-up operation by an operation to the other of the operation code, There is known a configuration including a second clutch unit and a second stopper unit that can select a descent operation due to its own weight and a self-weight descent prevention operation (see Patent Document 2).

JP 2010-101069 A Japanese Patent No. 4119692

  The clutch unit in the above prior art (Patent Document 2 etc.) enables a lifting operation of the shielding material and a lowering operation due to its own weight, but it is necessary to provide a stopper unit having a stopper groove separately from the clutch unit, There is a problem that the number of parts increases and the structure becomes complicated.

  In order to solve the above-described conventional problems, the present inventor has proposed a solar radiation shielding device including a clutch unit having a function of a stopper unit in Japanese Patent Application No. 2015-81817 preceding the present application.

  It is an object of the present invention to further improve the above-mentioned prior invention, and the operation of raising and lowering the shielding material suspended from the head box is performed in one direction of a single loop-like lifting operation cord. It is an object of the present invention to realize a solar shading device that can be switched by only pulling operation, has a simple configuration capable of stably winding and holding the shielding material, and has a small number of parts.

  In order to solve the above-described problems, the present invention provides a pulley operation driving device provided in a head box and rotated by an operation cord, a winding rotation shaft for raising a shielding material hanging downward from the head box, and a pulley A solar radiation shielding device comprising: a clutch unit that selectively switches between a transmission state in which the rotational force of the operation drive device is wound up and transmitted to the rotary shaft; and a non-transmission state in which the rotation force is not transmitted. A transmission-side rotating part connected to the apparatus and having a meshing disk, a transmission-side rotating part connected to a winding rotation shaft and having a meshing disk, a cam drum having a cam groove formed on the peripheral surface, and a cam drum attached to the head box Of the clutch case, a holding groove formed linearly in the axial direction on the inner surface of the clutch case, and a holding groove in the holding groove A clutch ball that is movable only in the axial direction within a range between one end and the other end in the axial direction and that moves relative to the cam drum within the cam groove, and the holding groove includes a clutch A plurality of clutch balls are provided on the inner surface of the case at intervals in the inner circumferential direction. A plurality of the clutch balls are provided, and one each of the plurality of clutch balls is disposed for each of the plurality of holding grooves. The meshing portion in which the cam drum is rotated in one rotational direction by the rotation of the transmission-side rotating portion, and any one of the plurality of clutch balls is located at either the proximal end side or the distal end side of the cam groove. The meshing plate of the rotating part of either the transmission side rotating part or the transmitted side rotating part moves in a direction relatively approaching in the axial direction with respect to the meshing board of the other rotating part. When one of a plurality of clutch balls comes to a release portion located on either the proximal end side or the distal end side of the cam groove, the one rotating portion is It moves in a direction relatively away from the other rotating part in the axial direction to release the meshed state and enter a non-transmitting state. The axial length of the holding groove is The solar shading device is characterized in that it is formed shorter than the length of the gap between the meshing portion and the releasing portion in the axial direction.

  By operating the operation cord, the clutch unit is in a state where the cam drum is stopped and the shielding material can be wound up and raised, a state where the shielding material can be held without lowering its weight, and a state where the shielding material can be lowered by its own weight. Any one of the plurality of clutch balls other than the one is positioned at the end of the holding groove when the shielding material can be raised and held. It is preferable that the cam drum is configured to restrict the movement of the cam drum in the axial direction.

  The transmission-side rotating portion has a drive shaft that is rotated by a pulley operation drive device, and a clutch spring cylinder that is spline-coupled to the drive shaft and wound with a clutch spring, and one end portion of the clutch spring is engaged with the cam drum. The clutch spring cylinder moves in the axial direction together with the cam drum via the clutch spring, and the cam drum can be rotated via the clutch spring. When the rotation of the cam drum and the clutch spring is restricted, the clutch spring cylinder is It is preferable that it can rotate while sliding against the clutch spring.

  It is preferable that the transmitted side rotating portion has a driven shaft that rotates together with the meshing plate included in the transmitted side rotating portion, and the driven shaft is connected to a winding rotation shaft.

  The cam groove has a winding groove formed endlessly on the cam drum, and a release groove formed by branching from the winding groove, and the winding groove has a meshing portion, a stop portion, and a holding portion, The stop portion is formed to be curved in a convex shape toward the other rotation direction in which the cam drum rotates, and the one of the clutch balls is located at the stop portion, and the other one other than the one When the one is located at the meshing portion, the rotation of the cam drum in one rotation direction is restricted and stopped, the movement of the cam drum in the axial direction is restricted, and the holding portion is in the one rotation direction in which the cam drum rotates. When the one of the clutch balls is located on the holding portion and the other one other than the one is located on the meshing portion, another rotation of the cam drum is formed. Stop rotating in the direction Holds, and restrict the axial movement of the cam drum, releasing groove is rolled up branches from the groove preferably has the release portion and the inclined portion.

  The meshing disk of the one rotating part is a meshing disk of the transmitted-side rotating part, and the meshing disk is movable in the axial direction relative to the driven shaft by spline coupling to the driven shaft. The meshing plate of the other rotary part is a meshing board of the transmission side rotary part, and is provided so as to be rotatable relative to the cam drum and axially movable together with the cam drum. The meshing board is preferably fixed to the tip of the drive shaft of the transmission side rotating part.

  The meshing plate of the one rotating portion is a meshing plate included in the transmission-side rotating portion, the meshing plate is fixed to the tip of the clutch spring cylinder, and the meshing plate of the other rotating portion is the transmission side It is a meshing board which a rotation part has, and it is preferred that this meshing board is fixed to the base end of a driven shaft.

  Two sets comprising a clutch unit and a winding rotation shaft are provided, and the operation code of the pulley operation driving device is in a loop shape, and one of the two sets is operated by operating the operation code in one direction. It is preferable to transmit the rotational force only to one of the two sets by transmitting the rotational force only and operating the operation cord in the other direction.

  The pulley operation driving device includes an intermediate gear that rotates by operation of an operation cord, a first driving gear and a second driving gear that mesh with the intermediate gear, and rotation in one rotation direction of the first driving gear among the two sets. The first one-way clutch that transmits the rotational force to only one of the second and the second driving gear in the second rotational direction transmits the rotational force only to the other of the two sets. And a clutch.

  According to the solar shading device according to the present invention, it is possible to switch the ascending and descending operations of the shielding material suspended from the head box by a pulling operation in only one direction of a single loop-shaped lifting operation cord. is there.

  Further, since the clutch unit having the function as the clutch and the function as the stopper unit is provided, the number of parts is reduced and the configuration is simplified. Furthermore, if a configuration is provided in which a plurality of clutch balls are provided, the clutch unit can perform a more reliable operation.

It is a front view explaining the whole structure of Example 1, 2 of the solar radiation shielding apparatus which concerns on this invention. It is a perspective view which shows the external appearance of the pulley operation drive device of Example 1, 2 and a 1st clutch unit and a 2nd clutch unit. It is a disassembled perspective view of the pulley operation drive device of Example 1,2. It is sectional drawing which shows the 1st clutch unit and 2nd clutch unit of Example 1. FIG. It is a disassembled perspective view of the 1st clutch unit of Example 1, and although the rotation direction which should transmit the 2nd clutch unit is opposite to the 1st clutch unit, the structure is substantially the same. It is a figure explaining the 1st clutch unit of Example 1, (a) is sectional drawing, (b) is sectional drawing cut | disconnected perpendicularly | vertically with respect to the axial direction. The second clutch unit is opposite to the first clutch unit in the rotational direction to be transmitted, but the configuration is substantially the same. It is a figure explaining an effect | action with the expanded view of the 1st cam drum of the 1st clutch unit of Example 1, (a) shows a cancellation | release state, (b) shows a meshing state. It is a figure explaining an effect | action with the expanded view of the 1st cam drum of the 1st clutch unit of Example 1, (a) shows a stop state, (b) shows a holding | maintenance state. It is a figure explaining an effect | action with the expanded view of the 2nd cam drum of the 2nd clutch unit of Example 1, (a) shows a releasing state, (b) shows a meshing state. It is a figure explaining an effect | action with the expanded view of the 2nd cam drum of the 2nd clutch unit of Example 1, (a) shows a stop state and (b) shows a holding | maintenance state. It is sectional drawing of the 1st clutch unit of Example 2, and a 2nd clutch unit. It is a disassembled perspective view of the 1st clutch unit of Example 2, Although the rotation direction which should transmit the 2nd clutch unit is opposite to the 1st clutch unit, the structure is substantially the same. FIG. 5 is a diagram illustrating a main part of a first clutch unit of Example 2, wherein (a) is a perspective view of a cam drum, and (b) is a perspective view illustrating an exploded state of the cam drum, a clutch spring cylinder, and a clutch spring. (C) is the front view seen from the base end side of the axial direction. It is a figure explaining the 1st clutch of Example 2, (a) is sectional drawing, (b) is sectional drawing cut | disconnected perpendicularly | vertically with respect to the axial direction. The second clutch unit is opposite to the first clutch unit in the rotational direction to be transmitted, but the configuration is substantially the same. It is a figure explaining an effect | action with the expanded view of the 1st cam drum of the 1st clutch unit of Example 2, (a) shows a releasing state, (b) shows a meshing state. It is a figure explaining an effect | action with the expanded view of the 1st cam drum of the 1st clutch unit of Example 2, (a) shows a stop state, (b) shows a holding | maintenance state. It is a figure explaining an effect | action with the expanded view of the 2nd cam drum of the 2nd clutch unit of Example 2, (a) shows a releasing state, (b) shows a meshing state. It is a figure explaining an effect | action with the expanded view of the 2nd cam drum of the 2nd clutch unit of Example 2, (a) shows a stop state, (b) shows a preservation | save state.

  EMBODIMENT OF THE INVENTION The form for implementing the solar radiation shielding apparatus which concerns on this invention is demonstrated below with reference to drawings based on an Example.

  The solar radiation shielding device according to the present invention is a solar radiation shielding device that operates an operation cord to raise and lower the shielding material. Here, the rising of the shielding material includes various configurations such as a configuration in which the lifting / lowering cord of the shielding material is wound up and wound up, and a configuration in which the shielding material itself is wound up on a winding roller. For example, it is a solar radiation shielding device that allows a shielding material suspended from a head box to be pulled up and lowered by pulling a single loop-shaped operation cord in one direction.

  Such a solar shading device according to the present invention is not only applicable to the solar shading device provided with one shielding material suspended from the head box, but also comprises two shielding materials suspended from the head box. It is also applicable to a twin-type solar shading device that is switched by a single loop-shaped operation code and independently moves up and down.

  The two shielding materials in the twin-type solar radiation shielding device include upper and lower shielding materials, or a double shielding material before and after an indoor shielding material and an outdoor shielding material. Moreover, as a shielding material, it can apply to a raising curtain (roman shade), a pleat screen, a shutter, a blind, etc.

Example 1
Embodiment 1 of a solar radiation shielding device according to the present invention will be described below with reference to FIGS. The first embodiment is a configuration in which the present invention is applied to a twin-type solar radiation shielding device, particularly a twin-type curtain curtain device.

overall structure:
FIG. 1 is a diagram illustrating the overall configuration of a solar radiation shielding device 1 according to a first embodiment of the present invention. As shown in FIG. 1, the solar radiation shielding device 1 includes a head box 2, a first shielding member 3 suspended from the head box 2 on the outdoor side, and a second shielding suspended from the head box 2 on the indoor side. The material 4 is provided. In the present Example 1, as the 1st shielding material 3 and the 2nd shielding material 4, the raising curtain is provided, respectively.

  The head box 2 is provided with a pulley operation driving device 8 as shown in FIGS. 1 to 3 at one end thereof (the right end in FIG. 1). A first clutch unit 9 and a second clutch unit 10 as shown in FIGS. 1, 2, and 4, a first hoisting rotation shaft 13, and a second hoisting rotation are provided at an upper portion and a lower portion in the head box 2, respectively. A shaft 14, a first winding roller 15 and a second winding roller 16 are provided.

  The first clutch unit 9 and the second clutch unit 10 generate the rotational force generated by the pulley operation drive device 8 from the first winding rotation shaft 13 and the second winding rotation shaft 14 to the first winding roller 15 and the second winding roller. It is transmitted to the roller 16.

  The 1st hoisting roller 15 and the 2nd hoisting roller 16 wind up the 1st raising / lowering cord 21 and the 2nd raising / lowering cord 21 which raise the 1st shielding material 3 and the 2nd shielding material 4, respectively. In addition, since the 1st raising / lowering cord is located in an outdoor side, although it is not illustrated in FIG. 1, the code | symbol 21 same as a 2nd raising / lowering cord is used in a specification.

  The lower ends of the first elevating cord and the second elevating cord 21 are respectively attached to the lower ends of the first shielding material 3 and the second shielding material 4. In addition, since the bottom rail provided in the lower end of the 1st shielding material 3 is located in the outdoor side, although it is not illustrated in FIG. 1, the same code | symbol as the bottom rail provided in the lower end of the 2nd shielding material 4 is shown. 22 is used in the specification.

  Hereinafter, the structure of each part of the solar radiation shielding apparatus 1 is demonstrated. In the description of the present specification and claims, the “axial direction” is the longitudinal direction of the head box 2, and more specifically, the axes of the first drive shaft 27, the first winding rotation shaft 13, etc., which will be described later. 1 refers to the direction (left and right direction in FIG. 1), “base end side” refers to the side close to the pulley operation drive device 8 (right end side in FIG. 1) in the axial direction, and “tip end side” refers to the pulley operation drive device. The side far from 8 (the left end side in FIG. 1), that is, the side opposite to the base end side.

Pulley operation drive:
The pulley operation driving device 8 pulls an operation cord 25 (see FIG. 1) composed of a loop-shaped (endless) ball chain, and will be described in detail later. The first transmission-side rotating portion shown in FIGS. 26 is a device for rotationally driving the 26 first drive shafts 27 and the second drive shaft 32 of the second transmission side rotation unit 31. In the first embodiment, the first drive shaft 27 and the second drive shaft 32 rotate in opposite directions.

  As shown in FIG. 3, the pulley operation drive device 8 includes a pulley 35, an intermediate gear 36 that rotates together with the pulley 35, a first driving gear 37 and a second driving gear 38 that mesh with the intermediate gear 36, A directional clutch 39 and a second one-way clutch 40.

  The first one-way clutch 39 receives the output of the first driving gear 37 and rotates only in the first rotation direction (counterclockwise direction when viewed from the base end side in the first embodiment) in the first drive shaft. 27. The second one-way clutch 40 receives the output of the second driving gear 38 and rotates the second drive shaft 32 only in the second rotation direction (clockwise direction as viewed from the base end side in the first embodiment). To communicate. The first one-way clutch 39 and the second one-way clutch 40 each use a known one-way clutch.

  In such a pulley operation drive device 8, when the operation cord 25 is pulled in one direction and the pulley 35 and the intermediate gear 36 are rotated in the clockwise direction (second rotation direction) in FIG. The first driving gear 37 is rotated in the counterclockwise direction (first rotation direction) through the intermediate gear 36, and the first drive shaft 27 is rotated in the first rotation through the first one-way clutch 39. It can rotate in the direction (counterclockwise direction).

  Further, when the operation cord 25 is pulled in the reverse direction to rotate the pulley 35 and the intermediate gear 36 in the first rotation direction (counterclockwise direction), the second driving gear 38 is moved through the intermediate gear 36. 2 rotation direction (clockwise direction), and further, the second drive shaft 32 can be rotated in the second rotation direction (clockwise direction) via the second one-way clutch 40.

Clutch unit:
The first clutch unit 9 and the second clutch unit 10 release the transmission state in which the rotation of the pulley operation driving device 8 is transmitted to the first winding rotation shaft 13 and the second winding rotation shaft 14 and non-transmission, respectively. Switch the state.

  Furthermore, the first clutch unit 9 and the second clutch unit 10 are stopper units (used to hold the shielding material in a state where the shielding material is wound up or release the holding material to lower the weight of the shielding material by its own weight). (Refer to Patent Document 2 etc.). As described above, the configuration in which the clutch unit also has the function of the stopper unit is also one of the features of the present invention.

  The first clutch unit 9 and the second clutch unit 10 are provided with a first cam drum, which will be described later, as the directions of rotation transmitted from the pulley operation driving device 8 to the first and second drive shafts 27 and 32 are opposite to each other. The cam grooves 46 of the 44 and the cam grooves 46 of the second cam drum 45 are in opposite directions (axisymmetric) with respect to the rotation direction of the cam drum.

  Further, as will be described later, the winding direction of the clutch spring 60 is not shown, corresponding to the rotation direction of the second drive shaft 32 being opposite to the rotation direction of the first drive shaft 27, although not shown. The direction is opposite to the clutch spring 60 of the unit 9.

  As described above, the configurations and operations of the first clutch unit 9 and the second clutch unit 10 are the same except for the configuration in which the cam groove and the clutch spring are slightly different due to the rotation directions being opposite to each other. Therefore, the first clutch unit 9 will be described below.

  As shown in FIGS. 4 and 5, the first clutch unit 9 includes a first transmission-side rotating unit 26 connected to the pulley operation driving device 8 and a first transmitted member connected to the first winding rotation shaft 13. A side rotating portion 50, a first cam drum 44 having a cam groove 46 having a substantially hemispherical cross section on the outer peripheral surface, a clutch case 52 for rotatably housing the first cam drum 44, and an axial direction on the inner surface of the clutch case 52 The upper holding groove 56 and the lower holding groove 58 that are linear and substantially hemispherical in cross section are held in the upper holding groove 56 and the lower holding groove 58 so as to be movable within a predetermined range in the axial direction. An upper clutch ball 55 and a lower clutch ball 57 that move relative to the first cam drum 44 in the cam groove 46 are provided.

  The first transmission-side rotating unit 26 includes a first drive shaft 27, a clutch spring cylinder 59 that is spline-coupled so as to rotate integrally with the first drive shaft 27 and move in the axial direction, a clutch spring 60, A transmission-side meshing board 61 fixed to the tip of the first drive shaft 27.

  As described above, the first drive shaft 27 is connected to the first one-way clutch 39 of the pulley operation drive device 8, and in the first rotation direction (counterclockwise direction) by pulling the operation cord 25 in one direction. It rotates, and includes a spline portion 64 and an annular portion 65.

  A coiled clutch spring 60 is wound around the outer peripheral surface of the clutch spring cylinder 59. The clutch spring 60 normally tightens the outer peripheral surface of the clutch spring cylinder 59 by its elasticity, and rotates as the clutch spring cylinder 59 rotates.

  However, when the clutch spring 60 rotating together with the clutch spring cylinder 59 is constrained to rotate via the one end 69 and a force against the elastic force is applied, the tightening force on the clutch spring cylinder 59 is weakened. Therefore, the clutch spring cylinder 59 is loosened by the clutch spring 60 and rotates relative to the clutch spring 60 so as to slide.

  The clutch case 52 includes a clutch case main body 72 and a clutch case lid 73. A cam cover 47 is attached to the base end of the first cam drum 44, and the first cam drum 44 is rotatably inserted into the clutch case 52.

  The first drive shaft 27 is rotatably inserted into the first cam drum 44 through the center hole 48 of the cam cover 47 together with the clutch spring cylinder 59, including the transmission side meshing disc 61 fixed to the tip thereof. In the first drive shaft 27, an annular portion 65 provided on the base end side thereof is rotatably fitted in an opening 74 of the clutch case lid 73.

  As shown in FIG. 5, the base end portion 77 of the first cam drum 44 is notched to form an engaging portion 78, and one end portion 69 of the clutch spring 60 is engaged with the engaging portion 78. is doing. As a result, the first cam drum 44 can rotate together with the clutch spring cylinder 59. Further, the first cam drum 44 is movable in the axial direction relative to the first drive shaft 27.

  As described above, the cam groove 46 is formed on the outer peripheral surface of the first cam drum 44, and the upper clutch ball 55 is formed on the inner surface of the clutch case main body 72 as shown in FIGS. 6 (a) and 6 (b). An upper holding groove 56 that holds the lower clutch ball 57 and a lower holding groove 58 that holds the lower clutch ball 57 are linearly formed in the axial direction. The upper holding groove 56 and the lower holding groove 58 are formed at diagonal positions on the upper and lower sides as shown in FIG. 6B which is an axial cross section.

  An upper clutch ball 55 and a lower clutch ball 57 are fitted in the upper holding groove 56 and the lower holding groove 58, respectively, so that they can roll. The upper clutch ball 55 and the lower clutch ball 57 are also fitted in the cam groove 46 so as to be able to roll.

  As shown in FIGS. 4 and 5, the first transmitted-side rotating unit 50 includes a first driven shaft 81 and a transmitted-side meshing plate 82 that is spline-coupled to the first driven shaft 81. Yes.

  The base end side of the first driven shaft 81 is rotatably inserted into the clutch case 52 and the first cam drum 44. The distal end side of the first driven shaft 81 is connected to the first winding rotation shaft 13 by a connecting tool 83 (see FIG. 5), and can be rotated together. The connector 83 has a fastening ring 86, a fastening plate 87 and a screw 88. A spline portion 91 is formed on the proximal end side of the first driven shaft 81.

  The transmitted side meshing plate 82 is rotatable in the first cam drum 44 relative to the first cam drum 44 and is movable in the axial direction together with the first cam drum 44 by the positioning ring 92. . More specifically, the transmission side meshing plate 82 is spline-coupled to the spline portion 91 of the first driven shaft 81, can rotate with the first driven shaft 81, and the first driven shaft 81. Is provided so as to be relatively movable in the axial direction.

  7 and 8 are development views of the cam groove 46 formed on the outer peripheral surface of the first cam drum 44 of the first clutch unit 9. The clutch case 52 is fixed to the head box 2, and an upper holding groove 56 and a lower holding groove 58 that are linearly formed on the inner surface of the clutch case 52 in the axial direction are provided in the axial direction. In order to show the relative position of the movable first cam drum 44 in the axial direction, it is schematically shown.

  The transmission side meshing plate 82 is configured to move in the axial direction together with the first cam drum 44. For convenience of explanation, however, the transmission side meshing plate 82 is connected to the base of the first cam drum 44 in FIGS. It was added to the end and shown schematically. Further, the transmission side meshing board 61 that does not move in the axial direction is schematically shown facing the transmitted side meshing board 82.

  The cam groove 46 is provided with a winding groove 95 (see a one-dot chain line in FIGS. 7 and 8) that is continuously formed in an endless manner around the circumference as a main groove. The hoisting groove 95 has a meshing part 96 formed in a convex shape toward the front end side (left side in FIGS. 7 and 8), and a direction opposite to the first rotation direction (winding direction) of the first cam drum 44. And a holding portion 98 that is convexly curved in the first rotation direction of the first cam drum 44.

  As will be described later, when the upper clutch ball 55 or the lower clutch ball 57 moves relative to the first cam drum 44 and moves relative to the meshing portion 96, the transmission operation of the first clutch unit 9 is performed. Further, when the upper clutch ball 55 or the lower clutch ball 57 is moved relative to the first cam drum 44 and is positioned relative to the stop portion 97, the first rotation direction (counterclockwise direction of the first cam drum 44, The rotation in the winding direction of the first shielding material 3 is restricted.

  When the winding operation by the operation cord 25 is stopped halfway and released, the first cam drum 44 rotates in the second rotation direction (clockwise) based on the weight drop of the first shielding member 3, and the upper clutch ball 55 or the lower clutch The ball 57 moves to the holding portion 98 and is positioned, and the rotation of the first cam drum 44 in the second rotational direction (clockwise) based on the weight drop of the first shielding material 3 is restricted, and the first shielding material 3 is The weight drop is prevented and held so as not to drop.

  Further, the cam groove 46 has a release groove branched from the winding groove 95. As the release groove, the main release groove 102 branched from the winding groove 95 in the vicinity of the holding portion 98 in the second rotation direction, and the auxiliary release groove 103 branched from the winding groove 95 in the vicinity of the engagement portion 96 in the second rotation direction. And having.

  The main release groove 102 has an inclined portion 106 toward the base end side and a main release portion 107 that is the end of the inclined portion 106. As will be described later, when the upper clutch ball 55 or the lower clutch ball 57 moves and moves relative to the main release unit 107, the first clutch unit 9 performs the transmission release operation (see FIG. 7A). .

  The sub-release groove 103 has an inclined portion toward the base end side and a sub-release portion 111 that is the end of the inclined portion. When the upper clutch ball 55 or the lower clutch ball 57 is positioned relative to the first cam drum 44 in the sub-release portion 111, the first clutch unit 9 performs a transmission release operation.

  The main release groove 102 and the main release portion 107, and the sub release groove 103 and the sub release portion 111 are different from each other in the branching from the winding groove 95, and are provided with a main and a sub. They are equivalent in terms of what they do. The main and sub are attached to distinguish them from each other, and there is no special meaning for the configuration and the action.

  When the first cam drum 44 rotates with the rotation of the first drive shaft 27, the upper clutch ball 55 and the lower clutch ball 57 are within the axial length ranges of the upper holding groove 56 and the lower holding groove 58, respectively. And move relative to the first cam drum 44 in the cam groove 46.

  The length L in the axial direction of the upper holding groove 56 and the lower holding groove 58 is positioned on the distal end side of the cam groove 46 and the release portion (main release portion 107, sub release portion 111) located on the proximal end side of the cam groove 46. It is formed smaller than the distance D in the axial direction with the meshing portion 96 (see FIG. 7A).

  The main release portion 107 and the sub release portion 111 of the cam groove 46 are portions that are located on the most proximal side in the axial direction of the cam groove 46, and the meshing portion 96 of the cam groove 46 is the portion of the cam groove 46. Since the upper holding groove 56 and the lower holding groove 58 are axially located at the most distal end side, the axial length L of each of the upper holding groove 56 and the lower holding groove 58 in the cam groove 46 formed in the first cam drum 44 is That is, it is formed to be shorter than the length D of the axial distance between the portion located on the most proximal side and the portion located on the most distal side.

  When the upper clutch ball 55 and the lower clutch ball 57 move to one end or the other end of the upper holding groove 56 and the lower holding groove 58, respectively, the upper clutch ball 55 and the lower clutch ball 57 are restrained there and cannot move any further. By moving in the axial direction relative to the clutch ball 55 or the lower clutch ball 57, the upper clutch ball 55 or the lower clutch ball 57 may move to the meshing portion 96 and the main release portion 107. it can.

  As a result, the transmission-side meshing board 82 that moves in the axial direction together with the first cam drum 44 is meshed with the stationary transmission-side meshing board 61, or the meshing is released. Details of this point will be described in more detail in the section of action described later.

  The clutch case 52 is fixed to the head box 2. Although not shown, contrary to the configuration described above, the cam groove 46 is provided on the inner peripheral surface of the clutch case 52, and the upper holding groove 56 and the lower holding groove 58 are provided on the outer peripheral surface of the first cam drum 44. It is good.

Action:
(1) Ascending (winding) operation The operation of the solar shading device 1 according to the first embodiment having the above configuration will be described below. Here, before the operation is started, the first cam unit 9 is released, that is, as shown in FIG. 7A, the transmission side meshing plate 61 and the first transmission side of the first transmission side rotating portion 26. The transmission side meshing plate 82 of the rotating unit 50 is in a state where the meshing is separated from each other and the meshing is released. The winding operation) will be described.

  When the operation cord 25 is pulled and operated in one direction and the pulley 35 is rotated in the clockwise direction, the first driving gear 37 and the second driving gear 38 are first rotated through the intermediate gear 36 in FIG. It rotates in the direction (counterclockwise direction in FIG. 3 in the first embodiment).

  The first driving gear 37 rotates in the first rotation direction (counterclockwise direction) via the first one-way clutch 39 and the first drive shaft of the first transmission-side rotation unit 26 in the first clutch unit 9. 27, the first drive shaft 27 rotates in the first rotation direction (counterclockwise direction in FIG. 5).

  The second driving gear 38 is rotated by the second one-way clutch 40 (a clutch that transmits only when the second driving gear 38 rotates in the direction opposite to the first driving gear 37). It is not transmitted to the second drive shaft 32 of the transmission side rotating part 31.

  When the first drive shaft 27 rotates in the first rotation direction (counterclockwise direction), as shown in FIGS. 4 and 5, one end 69 of the clutch spring 60 wound around the clutch spring cylinder 59 and the first The first cam drum 44 is rotated in the first rotation direction (counterclockwise direction) via the engaging portion 78 of the one cam drum 44.

  Then, the upper clutch ball 55 and the lower clutch ball 57 move in the upper holding groove 56 and the lower holding groove 58 in the axial direction, respectively, and move relatively in the cam groove 46 with respect to the first cam drum 44. .

  As will be described later, when the upper clutch ball 55 comes to the position of the meshing portion 96, the first clutch unit 9 is in the transmission state, and when the upper clutch ball 55 becomes the stop portion 97 and the holding portion 98, the first shielding member 3 is in the transmission state. When the first release state is maintained, the first shielding member 3 is held, and the main release unit 107 and the secondary release unit 11 are reached, a series of operations in the release state occurs.

  After such a series of movements of the upper clutch ball 55, the lower clutch ball 57 becomes a series of positions of the meshing portion 96, the stop portion 97, the holding portion 98, the release portion 107, etc. As a result, the upper clutch ball 55 As in the case of, a series of operations of the transmission state of the first clutch unit 9, the stop state of the first shielding member 3, the holding state of the first shielding member 3, and the release state of the first clutch unit 9 occur.

  Such a series of positions and states are performed by alternately repeating the upper clutch ball 55 and the lower clutch ball 57. Here, the following description will be given mainly focusing on the movement of the upper clutch ball 55.

  7 to 10, there are also diagrams in which the upper and lower clutch balls 55 and the lower clutch balls 57 are upside down (for example, FIG. 7A), but the first cam drum 44 is merely a development view. Therefore, the upper and lower clutch balls 55 and 57 are not shown in the vertical position. This also applies to FIGS. 15 to 18 described later.

  Further, since the upper clutch ball 55 and the lower clutch ball 57 can move only in the axial direction within the range of the upper holding groove 56 and the lower holding groove 58, the movement of the upper clutch ball 55 and the lower clutch ball 57 in the cam groove 46. Is a relative movement with respect to the rotating first cam drum 44.

  First, as shown in FIG. 7A, the lower clutch ball 57 is located at the base end of the lower holding groove 58 and at the main release portion 107 of the main release groove 102, and the clutch is in a released state. It is assumed that the upper clutch ball 55 is in a position in front of the meshing portion 96 in the winding groove 95.

  When the first drive shaft 27 and the first cam drum 44 are rotated by an operation of pulling the operation cord 25 in one direction from this state, the upper clutch ball 55 is relatively engaged with the first cam drum 44. Move towards 96. The lower clutch ball 57 passes through the inclined portion 106 and the branching portion 110 from the main release groove 102, moves to the winding groove 95, and moves in the upper holding groove 56 to the front end side (leftward in FIG. 7A). )

  When the upper clutch ball 55 reaches the tip of the upper holding groove 56 (the position indicated by the one-dot chain line in the left end of FIG. 7A), the movement toward the tip side is restrained in the cam groove 46. The first cam drum 44 moves toward the base end side in the axial direction.

  Then, the transmitted-side meshing plate 82 that moves in the axial direction together with the first cam drum 44 also moves toward the base end side, and meshes with the transmission-side meshing plate 61 as shown in FIG. 9 is in a transmission state.

  As a result, the rotation of the first drive shaft 27 in the first rotation direction (counterclockwise direction) is transmitted to the first driven shaft 81 via the transmission side meshing plate 61 and the transmitted side meshing plate 82. Then, the ascending operation of the first shielding member 3 by the first winding rotation shaft 13 is started.

  Further, if the operation cord 25 is continuously operated in the same direction, the first cam drum 44 continues to rotate in the first rotation direction (counterclockwise direction), and the upper clutch ball 55 is moved as shown in FIG. The stop part 97 is reached. Then, since the upper clutch ball 55 is restrained by the stop portion 97, the rotation of the first cam drum 44 is restrained and stopped.

  In this state, when the operation cord 25 is continuously operated in the same direction and the first drive shaft 27 and the clutch spring cylinder 59 are rotated in the first rotation direction (counterclockwise direction), one end portion 69 of the clutch spring 60 is moved. Since the first cam drum 44 is engaged with the engaging portion 78, the clutch spring 60 stops rotating together with the first cam drum 44, and the clutch spring cylinder 59 is tightened by the clutch spring 60.

  Therefore, when the operation cord 25 is operated to continue the rotation of the first drive shaft 27, the clutch spring cylinder 59 continues to rotate while sliding with respect to the clutch spring 60, and the first driven shaft 81 also continues to rotate. The rotation of the first winding rotation shaft 13 continues, and the ascending operation of the first shielding material 3 continues.

  When the operation is stopped by stopping the operation cord 25 from being pulled in one direction after the first shielding material 3 is wound up to a desired height, the first hoisting rotary shaft 13 is wound by the own weight of the first shielding material 3. It rotates in the direction opposite to the take-off direction, that is, the second direction (clockwise direction) in the first embodiment, and the first driven shaft 81, the transmission side meshing board 82, the transmission side meshing board 61, and the first The first cam drum 44 rotates in the second direction (clockwise direction) via the drive shaft 27, the clutch spring cylinder 59, and the clutch spring 60.

  By this rotation, the upper clutch ball 55 enters the holding portion 98 in the cam groove 46 as shown in FIG. 8B, and the second rotation direction of the first cam drum 44 due to the weight drop of the first shielding material 3. The rotation in the (clockwise direction) stops. Thereby, the 1st shielding material 3 can be hold | maintained in the open state to desired height.

  By the way, the solar radiation shielding device 1 according to the first embodiment cams the upper clutch ball 55 provided in the upper holding groove 56 and the lower clutch ball 57 provided in the lower holding groove 58 relative to the first cam drum 44, respectively. Even if the upper clutch ball 55 is located in either the stop portion 97 or the holding portion 98, the lower clutch ball 57 is engaged with the engaging portion 96 formed linearly in the cam groove 46. The structure located so that it may engage in is characterized.

  If only one upper clutch ball 55 is provided without providing the lower clutch ball 57, for example, during the winding operation, the first winding rotary shaft 13, the first driven shaft 81, the transmitted side When the first cam drum 44 moves leftward in the axial direction due to an external force (reaction force) applied to the transmission side meshing board 61 via the meshing board 82 or the like, the transmission side meshing board 61 and the transmission side meshing are engaged. The engagement with the board 82 is lost, and the stability of the winding operation is not lost at all.

  However, according to the solar shading device 1 of the first embodiment, the two clutch balls of the upper clutch ball 55 and the lower clutch ball 57 are provided so as to move in the cam groove 46 as described in the above-described configuration. Therefore, it is possible to prevent the meshing between the transmission-side meshing board 61 and the transmitted-side meshing board 82 during the winding operation and holding of the first shielding member 3, and to prevent the operation stability from being impaired. .

  That is, in a state where the upper clutch ball 55 is positioned at the stop portion 97, the lower clutch ball 57 is a meshing portion formed linearly in the circumferential direction of the first cam drum 44 as shown in FIG. Therefore, the movement of the first cam drum 44 in the axial direction (the movement in the left direction in FIG. 8A) is restricted. As a result, it is possible to prevent the meshing between the transmission side meshing board 61 and the transmission side meshing board 82 during the winding operation.

  Similarly, when the upper clutch ball 55 is positioned on the holding portion 98, the lower clutch ball 57 is engaged with the first cam drum 44 formed linearly in the circumferential direction as shown in FIG. 8B. Since it is located at the portion 96, the movement of the first cam drum 44 in the axial direction (the movement in the left direction in FIG. 8B) is restricted.

  Thereby, in the holding state where the first shielding member 3 does not move up and down, even if an external force in the axial direction is applied to the first cam drum 44 due to an earthquake or the like, the transmission side meshing plate 61 and the transmission side meshing plate 82 Can be prevented from being disengaged, and the stability of the operation can be prevented from being impaired.

  Although the above description has focused on the point that the upper clutch ball 55 moves in the cam groove 46 relative to the first cam drum 44, the lower clutch ball 57 is relative to the first cam drum 44. Even when moving in the cam groove 46, the same effect occurs.

  In this case, the upper clutch ball 55 is engaged with the engagement portion 96 formed in the straight shape of the cam groove 46 regardless of whether the lower clutch ball 57 is positioned at the stop portion 97 or the holding portion 98. Located in.

  As a result, the first cam drum is restricted from moving in the axial direction during the winding operation and holding of the first shielding member 3, so that the transmission side meshing plate 61 and the transmission side meshing plate 82 are disengaged. It is possible to prevent the stability of the winding operation in the stopped state and the holding operation in the holding state from being impaired.

  In this way, any one of the upper clutch ball 55 and the lower clutch ball 57 is located at the stop portion 97 and the holding portion 98, and the first engagement ball 61 and the transmission engagement plate 82 are engaged with each other. 1 The stability of the winding operation and holding operation of the shielding material 3 is improved.

  Further, when the upper clutch ball 55 and the lower clutch ball 57 are alternately in a series of positions such as a meshing part, a stopping part, a holding part, and a releasing part, a series of states such as meshing, stopping, holding, and releasing are performed. Since the operation is performed alternately, the timing of the winding operation and the holding operation of the first shielding material 3 can be selected by operating the operation cord a little more than in the configuration in which one clutch ball is provided. Increases speed.

(2) Descent (unwinding) operation
When lowering the first shielding member 3 held in the raised position as described above (see FIG. 8B), if the operation cord 25 is slightly pulled in the same direction as that when the first shield member 3 is lifted, the first clutch In the unit, the upper clutch ball 55 moves relative to the first cam drum 44 from the holding portion 98 shown in FIG. 8B to the branch portion 110 or a position beyond the branch portion 110.

  Then, when the pulling of the operation cord 25 in one direction is stopped, the first hoisting rotation shaft 13 rotates in the direction opposite to the hoisting direction due to the weight of the first shielding member 3, that is, the second rotation in the first embodiment. The first driven shaft 81, the transmitted side meshing plate 82, the transmission side meshing plate 61, the first driving shaft 27, the clutch spring cylinder 59, and the clutch spring 60. One cam drum 44 is rotated in the second rotation direction (clockwise direction).

  Then, the upper clutch ball 55 enters the main release groove 102 from the branch portion 110 and tries to move relative to the first cam drum 44 from the inclined portion 106 to the main release portion 107. Since the movement in the axial direction is restricted at the base end of the first cam drum 44, the first cam drum 44 moves toward the front end side.

  Therefore, as shown in FIG. 7A, the transmission side meshing board 82 and the transmission side meshing board 61 are separated from each other, and the meshing of both is released. In FIG. 7A, this state is indicated by (55) and (57) for the upper and lower clutch balls, respectively. As a result, the transmitted-side meshing board 82, the first driven shaft 81, and the first winding rotation shaft 13 can freely rotate, and the first shielding member 3 is lowered and closed by its own weight.

  At this time, since the meshing of the transmission side meshing plate 82 and the transmission side meshing plate 61 is released, the second rotational direction (clockwise) of the first driven shaft 81 due to the weight drop of the first shielding member 3 is released. Direction) is not transmitted to the first drive shaft 27, the clutch spring cylinder 59, and the first cam drum 44.

  In the ascending operation, as described above, the meshing state of the transmission-side meshing plate 61 of the first transmission-side rotation unit 26 and the transmission-side meshing plate 82 of the first transmitted-side rotation unit 50 is released (FIG. 7 ( From (a), the operation cord 25 is pulled in one direction to be engaged as shown in FIG. 7B, and the first shielding member 3 is raised.

  When the engagement state is established and the operation of the operation cord 25 is stopped after passing the branching portion 104 to the sub release groove 103, the first cam drum 44 rotates in the first rotation direction (counterclockwise direction). Although not shown, the upper clutch ball 55 enters the sub release groove 103 and stops at the sub release portion 111.

  As a result, similarly to the case where the upper clutch ball 55 enters the main release portion 107 (see the upper clutch ball (55) in FIG. 7A), the transmission-side meshing plate 61 of the first transmission-side rotating portion 26 and The engagement of the transmitted-side meshing board 82 of the first transmitted-side rotating portion 50 is released.

Second clutch unit:
Although the configuration and operation of the first clutch unit 9 have been described above, the configuration and operation of the second clutch unit 10 (see FIG. 2) are substantially the same as those of the first clutch unit 9. However, the rotation direction of the second drive shaft 32 (see FIG. 4) and the second driven shaft 84 of the second clutch unit 10 is the second rotation direction (clockwise direction), and the rotation of the first drive shaft 27 is performed. The direction is the opposite.

  That is, when the second shielding material 4 is raised (rolled up), it is opposite to the case where the first shielding material 3 is raised, and the operation cord 25 is reversed in the direction opposite to the case where the first shielding material 3 is raised. When the pulley 35 is operated by pulling in the other direction, and the pulley 35 is rotated in the first rotation direction (counterclockwise direction), the first driving gear 37 and the second driving gear 38 via the intermediate gear 36 in FIG. Both rotate in the second rotation direction (clockwise direction).

  In FIG. 3, the second driving gear 38 rotates in the second rotation direction via the second one-way clutch 40 to the second drive shaft 32 of the second transmission-side rotation unit 31 in the second clutch unit 10. The second drive shaft 32 rotates in the second rotation direction (clockwise direction). The rotation of the first driving gear 37 is not transmitted to the first drive shaft 27 of the first transmission side rotation unit 26 in the first clutch unit 9 by the first one-way clutch 39.

  In this way, the direction of rotation of the second drive shaft 32 is opposite to the direction of rotation of the first drive shaft 27, and the winding direction of the clutch spring 60 is not shown, but the first clutch unit 9 The direction is opposite to that of the clutch spring 60.

  Further, the cam groove 46 of the second cam drum 45 of the second clutch unit 10 rotates with the cam groove 46 of the first cam drum 44 of the first clutch unit 9 as shown in FIGS. 9 (a) and 9 (b). It is formed so as to be opposite to the direction (line symmetry).

  In the second clutch unit 10, in FIG. 9A, the lower clutch ball 57 is located at the base end of the lower holding groove 58 and at the main release portion 107 of the main release groove 102, and the transmission-side meshing disc 61. And the transmission-side meshing plate 82 are disengaged, the upper clutch ball 55 is in a position in front of the meshing portion 96 in the winding groove 95, and the second clutch unit 10 is in a disengaged state. Is shown.

  In the second clutch unit 10, FIG. 9B shows that the upper clutch ball 55 is positioned in the meshing portion 96, the transmission side meshing plate 61 and the transmitted side meshing plate 82 are meshed, and the second clutch unit Reference numeral 10 indicates a transmission state.

  With respect to the operation of the second clutch unit 10, the second cam drum 45 meshes and meshes the transmission-side meshing plate 61 of the second transmission-side rotation unit 31 and the transmission-side meshing plate 82 of the second transmission-side rotation unit 51. The switching operation for canceling the alignment is the same as that in the case of the first clutch unit 9 except that the rotation direction is reversed when raising (winding up) and when falling by its own weight.

  According to the shielding material of the first embodiment, the second clutch unit 10 also moves the two clutch balls of the upper clutch ball 55 and the lower clutch ball 57 within the cam groove 46 as in the first clutch unit 9. Therefore, it is possible to prevent the meshing between the transmission-side meshing plate 61 and the transmitted-side meshing plate 82 during the winding operation and holding of the second shielding member 4, and the stability of the operation is impaired. This can be prevented.

  That is, in a state where the upper clutch ball 55 is positioned at the stop portion 97, the lower clutch ball 57 is a meshing portion formed linearly in the circumferential direction of the second cam drum 45 as shown in FIG. Therefore, the movement of the second cam drum 45 in the axial direction (the movement in the left direction in FIG. 10A) is restricted. As a result, it is possible to prevent the meshing between the transmission side meshing board 61 and the transmitted side meshing board 82 during the winding operation.

  Similarly, when the upper clutch ball 55 is positioned on the holding portion 98, the lower clutch ball 57 is meshed with the second cam drum 45 formed linearly in the circumferential direction as shown in FIG. Since it is located at the portion 96, the movement of the second cam drum 45 in the axial direction (movement in the left direction in FIG. 10B) is restricted.

  Thereby, in the holding state where the second shielding member 4 does not move up and down, even if an external force in the axial direction is applied to the second cam drum 45 due to an earthquake or the like, the transmission side meshing plate 61 and the transmission side meshing plate 82 Can be prevented from being disengaged, and the stability of the operation can be prevented from being impaired.

  As mentioned above, although Example 1 of the solar radiation shielding apparatus 1 which concerns on this invention was demonstrated, it is not limited to such a structure. For example, in the first clutch unit 9 and the second clutch unit 10, a configuration in which two holding grooves and two clutch balls are provided as a plurality of holding grooves and a plurality of clutch balls has been shown. It is good also as a structure which provides a groove | channel and three or more clutch balls.

(Example 2)
Embodiment 2 of the solar radiation shielding device according to the present invention will be described with reference to FIGS. The solar shading device 120 of the second embodiment is substantially the same as the solar shading device 1 of the first embodiment. Therefore, in the description of the solar shading device 120 of the second embodiment, the same reference numerals are used for configurations that are common to the solar shading device 1 of the first embodiment.

Overview:
An outline of the configuration of the solar shading device 120 according to the second embodiment will be described with reference to a different configuration from the solar shading device 1 according to the first embodiment. The overall configuration of the solar shading device 120 of Example 2 and the pulley operation drive device 8 are the same as the solar shading device 1 of Example 1 shown in FIGS.

  The solar radiation shielding device 120 according to the second embodiment is different from the solar radiation shielding device 1 according to the first embodiment in a part of the configuration of the clutch unit (the first clutch unit 9 and the second clutch unit 10).

  Specifically, the first clutch unit 9 of the clutch unit according to the second embodiment includes the first transmission side rotation unit 26 and the first transmitted side rotation unit 50, similarly to the first clutch unit 9 according to the first embodiment. However, the first transmission side rotation unit 26 and the first transmitted side rotation unit 50 are partially different in configuration. Similarly, the configuration of the second clutch unit 10 of the second embodiment is partially different from that of the first and second clutch units 10.

  As shown in FIGS. 11, 12, and 14, the first transmission side rotation unit 26 of the second embodiment is similar to the first transmission side rotation unit 26 of the first embodiment, and includes a first drive shaft 27 and a clutch spring cylinder. 59, a clutch spring 60, and a transmission side meshing board 61. In the first transmission-side rotating portion 26 of the first embodiment, the transmission-side meshing plate 61 is fixed to the tip of the first drive shaft 27 and does not move in the axial direction.

  However, the transmission-side meshing plate 61 of the first transmission-side rotating portion 26 of the second embodiment is fixed to the tip of the clutch spring cylinder 59 and is splined to the first drive shaft 27 together with the clutch spring cylinder 59. The first drive shaft 27 rotates together with the first drive shaft 27 and can move relative to the first drive shaft 27 in the axial direction.

  Further, the transmission-side meshing plate 61 of the first transmission-side rotating portion 26 of the second embodiment is integrated with the clutch spring cylinder 59, moves in the axial direction together with the first cam drum 44, and is connected to the first cam drum via the clutch spring 60. 44, and when the clutch spring 60 is loosened, it can also rotate relative to the first cam drum 44 (independently).

  Similar to the first transmitted side rotating unit 50 of the first embodiment, the first transmitted side rotating unit 50 of the second example includes a first driven shaft 81 and a transmitted side meshing plate 82.

  In the first transmitted-side rotating portion 50 of the first embodiment, the transmitted-side meshing plate 82 is splined to the first driven shaft 81 and can move in the axial direction together with the first cam drum 44. The transmission-side meshing plate 82 is fixed to the base end of the first driven shaft 81 and is configured not to move in the axial direction.

  The outline of the configuration of the clutch unit (first and second clutch units 9, 10) of the second embodiment is different from the clutch unit (first and second clutch units 9, 10) of the first embodiment. As explained above, the basic differences between the two are summarized as follows.

  In the first embodiment, when the first clutch unit 9 is viewed, the transmission-side meshing plate 61 of the first transmission-side rotation unit 26 does not move in the axial direction, but the transmission-side meshing plate 82 of the first transmission-side rotation unit 50. Is configured to release the meshing and the meshing of the transmission side meshing plate 61 and the transmission side meshing plate 82 by moving in the axial direction.

  In contrast, in the second embodiment, the transmitted side meshing plate 82 of the first transmitted side rotating unit 50 does not move in the axial direction, but the transmission side meshed plate 61 of the first transmitted side rotating unit 26 is moved in the axial direction. By moving, the transmission-side meshing board 61 and the transmission-side meshing board 82 are engaged and released.

Clutch unit:
As described above, the outline of the configuration of the solar shading device 120 of the second embodiment has been described focusing on the configuration of the clutch units (first and second clutch units 9 and 10) different from the solar shading device 1 of the first embodiment. Further, the clutch unit (first and second clutch units 9 and 10) of the second embodiment will be described in detail with reference to FIGS. 15 to 18 schematically showing the configuration thereof.

  Also in the solar shading device 120 of the second embodiment, the first clutch unit 9 and the second clutch unit 10 cause the rotation of the pulley operation driving device 8 to the first hoisting rotary shaft 13 and the second hoisting rotary shaft 14, respectively. While switching between a transmitting state and a non-transmitting state, it has a function of a stopper unit (see Patent Document 2 etc.) used in a conventional solar shading device.

  And also in the solar radiation shielding apparatus 120 of Example 2, the 1st clutch unit 9 and the 2nd clutch unit 10 are accompanied by the direction of the rotation transmitted from the pulley operation drive device 8 being mutually opposite, FIG. As shown in FIG. 18, the configuration and operation are the same except for the configuration in which the cam groove 46 of the first cam drum 44 and the cam groove 46 of the second cam drum 45 are opposite to each other (axisymmetric) in the rotational direction. It is. Hereinafter, the configuration of the first clutch unit 9 will be described.

  Similar to the first clutch unit 9 of the first embodiment, the first clutch unit 9 includes a first transmission-side rotating portion 26 coupled to the pulley operation driving device 8 as shown in FIGS. 11, 12, and 14. The first transmitted side rotating part 50 connected to the first winding rotation shaft 13, the first cam drum 44, the clutch case 52, and the upper holding groove 56 and the lower holding groove formed on the inner surface of the clutch case 52. 58 and the upper holding groove 56 and the lower holding groove 58 are held so as to be movable within a predetermined range in the axial direction, and move relative to the first cam drum 44 in the cam groove 46. And a lower clutch ball 57.

  The first drive shaft 27 is connected to the first one-way clutch 39 of the pulley operation drive device 8, and rotates in the first rotation direction (counterclockwise direction) by pulling the operation cord 25 in one direction. The clutch spring cylinder 59 is spline-coupled to the first drive shaft 27, rotates with the first drive shaft 27, and is relatively movable in the axial direction along the first drive shaft 27.

  A clutch spring 60 is wound around the outer peripheral surface of the clutch spring cylinder 59. The clutch spring 60 normally tightens the outer peripheral surface of the clutch spring cylinder 59 by its elasticity, and rotates as the clutch spring cylinder 59 rotates.

  The first drive shaft 27 is rotatably inserted into the first cam drum 44 together with a clutch spring cylinder 59 having a transmission-side meshing disc 61 at the tip. One end portion 69 of the clutch spring 60 is engaged with an engaging portion 78 (see FIG. 12) formed by cutting out the base end portion 77 of the first cam drum 44.

  The first cam drum 44 can rotate together with the clutch spring cylinder 59 via the one end 69 of the clutch spring 60, and can rotate relative to the clutch spring cylinder 59 when the clutch spring 60 is loosened. In addition, it is movable in the axial direction relative to the first drive shaft 27.

  The clutch case 52 is fixed to the head box 2 and includes a clutch case main body 72 and a clutch case lid 73 (see FIGS. 2, 11, and 14). A cam cover 47 is attached to the base end of the first cam drum 44, and the first cam drum 44 is rotatably inserted into the clutch case 52 together with the first drive shaft 27 and the clutch spring cylinder 59.

  A cam groove 46 is formed endlessly on the outer peripheral surface of the first cam drum 44, and an upper holding groove 56 and a lower holding groove 58 are formed on the inner surface of the clutch case main body 72. An upper clutch ball 55 and a lower clutch ball 57 are fitted in the cam groove 46, the upper holding groove 56, and the lower holding groove 58 so as to allow rolling.

  As shown in FIGS. 11, 12, and 14, the first driven side rotating unit 50 includes a first driven shaft 81 and a transmitted side meshing plate 82 fixed to the base end of the first driven shaft 81. And. The base end side of the first driven shaft 81 provided with the transmission side meshing board 82 is rotatably inserted into the clutch case 52 and the first cam drum 44. The distal end side of the first driven shaft 81 is connected to the first winding rotation shaft 13 by a connector 83 and rotates together with the first winding rotation shaft 13.

  As described above, the first clutch unit 9 according to the second embodiment is partly different from the first clutch unit 9 according to the first embodiment in the first transmission side rotation unit 26 and the first transmitted side rotation unit 50. Based on this difference, the configuration of the cam groove 46 of the first cam drum 44 of the first clutch unit 9 is also different. Hereinafter, the configuration of the cam groove 46 in the first cam drum 44 of the first clutch unit 9 of the second embodiment will be described.

  15 and 16 are development views of the cam groove 46 formed on the outer peripheral surface of the first cam drum 44 of the first clutch unit 9. The upper holding groove 56 and the lower holding groove 58 provided stationary on the inner surface of the clutch case 52 are schematically shown in order to indicate the relative position in the axial direction with the first cam drum 44 that is movable in the axial direction. It was shown to.

  The transmission-side meshing plate 61 is configured to move in the axial direction together with the first cam drum 44. However, for convenience of explanation of the operation, the transmission-side meshing plate 61 is placed on the front end side of the first cam drum 44 in FIGS. Added and shown schematically. Furthermore, the transmission side meshing board 82 provided stationary while not moving in the axial direction is schematically shown facing the transmission side meshing board 61.

  The cam groove 46 is provided with a winding groove 95 (see a chain line in FIG. 15 and FIG. 16) that is continuously formed endlessly in the circumferential direction as a main groove. The hoisting groove 95 has a meshing part 96 formed in a convex shape toward the base end side (the right side in FIGS. 15 and 16) and the first rotational direction (winding direction) of the first cam drum 44 is opposite. A stop portion 97 curved in a convex shape in the direction, and a holding portion 98 curved in a convex shape in the first rotation direction of the first cam drum 44.

  When the upper clutch ball 55 or the lower clutch ball 57 moves and moves relative to the first cam drum 44, the meshing portion 96 is in the transmission state of the first clutch unit 9. When the upper clutch ball 55 or the lower clutch ball 57 is moved relatively to the stop portion 97, the rotation of the first cam drum 44 in the first rotation direction (counterclockwise) is restricted.

  Further, when the holding portion 98 is stopped while being pulled in one direction of the operation cord 25, the upper clutch ball 55 or the lower clutch ball 57 enters the holding portion 98, and the weight of the first shielding member 3 is lowered. The rotation of the first cam drum 44 based on the second rotation direction (clockwise) is restricted, and the first shielding member 3 is held without dropping its own weight.

  Further, the cam groove 46 includes a main release groove 102 branched from the winding groove 95 in the vicinity of the holding portion 98 and a sub release groove 103 branched from the winding groove 95 in the vicinity of the meshing portion 96. The main release groove 102 has an inclined portion 106 toward the tip side and a main release portion 107 that is the end of the inclined portion 106. When the upper clutch ball 55 or the lower clutch ball 57 moves and moves relative to the main release portion 107, the first clutch unit 9 performs a transmission release operation (see FIG. 15A).

  The sub-release groove 103 has an inclined portion 103 toward the distal end side and a sub-release portion 111 that is the end of the inclined portion 103. When the upper clutch ball 55 or the lower clutch ball 57 is positioned relative to the first cam drum 44 in the sub release portion 111, the first clutch unit 9 performs the transmission release operation.

  When the first cam drum 44 rotates with the rotation of the first drive shaft 27, the upper clutch ball 55 and the lower clutch ball 57 are within the range of the axial length L of the holding groove in the upper holding groove 56 and the lower holding groove 58. The first cam drum 44 moves relative to the first cam drum 44 in the axial direction.

  The length L in the axial direction of the upper holding groove 56 and the lower holding groove 58 is the release portion (main release portion 107, sub release portion 111) located on the distal end side of the meshing portion 96 located on the proximal end side in the cam groove 46. ) And the axial distance D (see FIG. 15A).

  When the upper clutch ball 55 or the lower clutch ball 57 moves to one end and the other end of the upper holding groove 56 and the lower holding groove 58, the upper clutch ball 55 or the lower clutch ball 57 is restrained there and cannot move any further. By moving in the axial direction relative to the ball 55 or the lower clutch ball 57, the upper clutch ball 55 or the lower clutch ball 57 moves to the main release portion 107, the sub release portion 111 and the meshing portion 96. can do.

  As a result, the transmission side meshing board 61 that moves in the axial direction together with the first cam drum 44 is meshed with the stationary transmission side meshing board 82, or the meshing is released. Details of this point will be described in more detail in the section of action described later.

  The cam groove 46 of the second cam drum 45 of the second clutch unit 10 corresponds to a configuration in which the rotation direction of the second drive shaft 32 is opposite to the rotation direction of the first drive shaft 27. As shown in FIGS. 17 and 18, the cam groove 46 of the first 9 cam drum 44 is formed so as to be in the opposite direction (axisymmetric) with respect to the rotational direction.

Action:
The operation of the solar shading device 120 according to the second embodiment having the above-described configuration is substantially the same as that of the solar shading device 1 according to the first embodiment, but a part of the first cam unit 8 and the second cam unit 10 as described above. Since they are different, the following description will focus on the operation based on the different configurations.

(1) Ascending (winding) operation FIG. 15A shows that the transmission-side meshing plate 61 of the first transmission-side rotation unit 26 and the transmission-side meshing plate 82 of the first transmission-side rotation unit 50 are separated from each other. The state before starting the released operation is shown.

  When the operation cord 25 is pulled in one direction for the ascending operation for raising the first shielding member 3 (winding operation for winding up the elevating cord), the first drive shaft 27 is connected to the first drive shaft 8 via the pulley operation drive device 8 and the like. It rotates in the direction of rotation (counterclockwise direction in FIG. 12).

  When the first drive shaft 27 rotates in the first rotational direction (counterclockwise direction), as shown in FIGS. 11 and 12, one end 69 of the clutch spring 60 wound around the clutch spring cylinder 59 and the first end The first cam drum 44 is rotated in the first rotation direction (counterclockwise direction) via the engaging portion 78 of the one cam drum 44.

  Then, the upper clutch ball 55 and the lower clutch ball 57 move in the axial direction in the upper holding groove 56 and the lower holding groove 58, respectively, and move in the cam groove 46 relative to the first cam drum 44. Here, as in the case of the first embodiment, the following description will be given mainly focusing on the relative movement of the upper clutch ball 55 with respect to the first cam drum 44.

  In the state shown in FIG. 15A, the lower clutch ball 57 is located at the tip of the lower holding groove 58 and is located at the main release portion 107 of the main release groove 102, and the first clutch unit 9 is in the released state. is there. The upper clutch ball 55 is in a position in front of the meshing portion 96 in the winding groove 95.

  When the first drive shaft 27 and the first cam drum 44 are rotated by an operation of pulling the operation cord 25 in one direction from this state, the upper clutch ball 55 is relatively engaged with the first cam drum 44. Move towards 96. The lower clutch ball 57 passes through the inclined portion 106 and the branching portion 110 from the main release groove 102, moves to the winding groove 95, and moves to the proximal end side in the upper holding groove 56 (right in FIG. 15A). Direction).

  When the upper clutch ball 55 reaches the base end of the upper holding groove 56 (the position indicated by the one-dot chain line in the right end of FIG. 15A), further movement toward the base end side is restricted in the cam groove 46. In addition, the first cam drum 44 moves toward the front end side in the axial direction.

  Then, the transmission side meshing plate 61 of the clutch spring cylinder 59 that moves in the axial direction together with the first cam drum 44 also moves toward the tip side in the axial direction, and as shown in FIG. And the first clutch unit 9 is in the transmission state.

  As a result, the rotation of the first drive shaft 27 in the first rotation direction (counterclockwise direction) is transmitted to the first driven shaft 81 via the transmission side meshing plate 61 and the transmitted side meshing plate 82. Then, the ascending operation of the first shielding member 3 by the first winding rotation shaft 13 is started.

  Further, if the operation cord 25 is continuously operated in the same direction, the first cam drum 44 continues to rotate in the first rotation direction (counterclockwise direction), and the upper clutch ball 55 is as shown in FIG. The stop part 97 is reached. Then, since the upper clutch ball 55 is restrained by the stop portion 97, the rotation of the first cam drum 44 is restrained and stopped.

  In this state, when the operation cord 25 is continuously operated in the same direction and the first drive shaft 27 and the clutch spring cylinder 59 are rotated in the first rotation direction (counterclockwise direction), one end portion 69 of the clutch spring 60 is moved. Since the first cam drum 44 is engaged with the engaging portion 78, the clutch spring 60 stops rotating together with the first cam drum 44, and the clutch spring cylinder 59 is tightened by the clutch spring 60.

  Therefore, when the operation cord 25 is operated and the first drive shaft 27 continues to rotate, the first cam drum 44 stops rotating, but the clutch spring cylinder 59 continues to rotate while sliding against the clutch spring 60, The first driven shaft 81 also continues to rotate, the first winding rotation shaft 13 continues to rotate, and the first shielding member 3 continues to move upward.

  When the operation is stopped by stopping the operation cord 25 from being pulled in one direction after the first shielding material 3 is wound up to a desired height, the first hoisting rotary shaft 13 is wound by the own weight of the first shielding material 3. It rotates in the direction opposite to the taking direction, that is, the second direction (clockwise direction) in the second embodiment, and the first driven shaft 81, the transmission side meshing board 82, the transmission side meshing board 61, the first The first cam drum 44 rotates in the second direction (clockwise direction) via the drive shaft 27, the clutch spring cylinder 59, and the clutch spring 60.

  By this rotation, the upper clutch ball 55 enters the holding portion 98 in the cam groove 46 as shown in FIG. 16B, and the second rotation direction of the first cam drum 44 due to the weight drop of the first shielding material 3. The rotation in the (clockwise direction) stops. Thereby, the 1st shielding material 3 can be hold | maintained in the open state to desired height.

  Since the two clutch balls of the upper clutch ball 55 and the lower clutch ball 57 are provided so as to move within the cam groove 46, the transmission-side meshing plate 61 and the transmitted-side meshing are engaged during the winding operation and holding of the shielding material. It is possible to prevent the meshing with the panel 82 from being disengaged, and to prevent the operation stability from being impaired.

  By the way, in the solar radiation shielding device 120 of the second embodiment, the upper clutch ball 55 provided in the upper holding groove 56 and the lower clutch ball 57 provided in the lower holding groove 58 are cam grooves relative to the first cam drum, respectively. 46, the lower clutch ball 57 remains in the meshing portion 96 formed in the straight shape of the cam groove 46 regardless of whether the upper clutch ball 55 is positioned at either the stop portion 97 or the holding portion 98. The structure located so that it may engage with.

  If only one upper clutch ball 55 is provided without providing the lower clutch ball 57, for example, during the winding operation, the first winding rotary shaft 13, the first driven shaft 81, and the transmission meshing plate. 82, when the first cam drum 44 moves in the axial direction due to an external force (reaction force) applied to the first cam drum 44 via the transmission meshing plate 61 or the like, the transmission meshing plate 61 and the transmission meshing plate There is no danger that the engagement with 82 is lost and the stability of the operation is impaired.

  However, according to the shielding material of the second embodiment, the two clutch balls of the upper clutch ball 55 and the lower clutch ball 57 are provided so as to move in the cam groove 46 as described in the above-described feature. During the winding operation and holding of the first shielding member 3, it is possible to prevent the meshing between the transmission side meshing plate 61 and the transmitted side meshing plate 82 from being lost, and it is possible to prevent the stability of the operation from being impaired.

  That is, in a state where the upper clutch ball 55 is positioned at the stop portion 97, the lower clutch ball 57 is a meshing portion formed linearly in the circumferential direction of the first cam drum 44 as shown in FIG. Therefore, the movement of the first cam drum 44 in the axial direction (the movement in the right direction in FIG. 16A) is restricted. As a result, it is possible to prevent the meshing between the transmission side meshing board 61 and the transmission side meshing board 82 during the winding operation.

  Similarly, when the lower clutch ball 57 is positioned on the holding portion 98, the upper clutch ball 55 is meshed with the first cam drum 44 formed linearly in the circumferential direction as shown in FIG. Since it is located at the portion 96, the movement of the first cam drum 44 in the axial direction (the movement in the right direction in FIG. 16B) is restricted.

  Thus, even in the holding state where the first shielding member 3 does not move up and down, even if an external force is applied to the first cam drum 44 in the axial direction due to an earthquake or the like, the transmission side meshing plate 61 and the transmission side meshing plate 82 are provided. Can be prevented from being disengaged, and the stability of operation can be prevented from being impaired.

  Further, when the upper clutch ball 55 and the lower clutch ball 57 are alternately in a series of positions such as a meshing part, a stopping part, a holding part, and a releasing part, a series of states such as meshing, stopping, holding, and releasing are performed. Since the operation is performed alternately, the timing of the winding operation and the holding operation of the first shielding material 3 can be selected by operating the operation cord a little more than in the configuration in which one clutch ball is provided. Increases speed.

(2) Descent (unwinding) operation
The unwinding operation in the solar shading device 120 of the second embodiment is substantially the same as that in the solar shading device 1 of the first embodiment. When lowering the first shielding material 3 in the wound state, if the operation cord 25 is slightly pulled in the same direction as when it is lifted, the upper clutch ball 55 in the first clutch unit 9 is shown in FIG. It moves relative to the first cam drum 44 from the holding portion 98 shown to the branching portion 110 with respect to the main release groove 102 or a position beyond the branching portion 110.

  When the operation cord 25 is stopped from being pulled in one direction and the operation is stopped, the first winding rotation shaft 13 rotates in the second rotation direction (clockwise direction) due to the weight of the first shielding member 3. The first cam drum 44 is moved in the second rotation direction (clockwise direction) via the first driven shaft 81, the transmission side meshing plate 82, the transmission side meshing plate 61, the clutch spring cylinder 59 and the clutch spring 60. Rotate.

  Then, the upper clutch ball 55 enters the main release groove 102 from the branch portion 110 and tries to move relative to the first cam drum 44 from the inclined portion 106 to the main release portion 107. Since the movement in the axial direction is restricted at the base end of the first cam drum 44, the first cam drum 44 moves toward the base end side.

  As a result, as shown in FIG. 15A, the transmission side meshing board 61 and the transmission side meshing board 82 are separated from each other, and the meshing is released. In FIG. 15A, this state is indicated by (55) and (57) for the upper and lower clutch balls, respectively. And the to-be-transmitted meshing board 82, the first driven shaft 81, and the first hoisting rotary shaft 13 are freely rotatable, and the first shielding member 3 is lowered by its own weight and is in a closed state.

  Since the meshing between the transmission-side meshing plate 61 and the transmitted-side meshing plate 82 is released, the first driven shaft 81 rotates in the second rotation direction (clockwise direction) due to the weight drop of the first shielding member 3. Is not transmitted to the first drive shaft 27, the clutch spring cylinder 59 and the first cam drum 44.

  In the ascending (winding-up operation), as described above, the meshing state of the transmission-side meshing plate 61 of the first transmission-side rotation unit 26 and the transmission-side meshing plate 82 of the first transmitted-side rotation unit 50 is released ( From FIG. 15 (a)), the operation cord 25 is pulled in one direction so as to be engaged as shown in FIG. 15 (b), and the first shielding member 3 is wound up.

  When the engagement state is established and the operation of the operation cord 25 is stopped after passing the branching portion 104 to the sub release groove 103, the first cam drum 44 rotates in the first rotation direction (counterclockwise direction). Although not shown, the upper clutch ball 55 enters the sub release groove 103 and stops at the sub release portion 111.

  As a result, similarly to the case where the upper clutch ball 55 enters the main release groove 102 (see the upper clutch ball (55) in FIG. 15A), the transmission side meshing plate 61 of the first transmission side rotating portion 26 The engagement of the transmitted-side meshing board 82 of the first transmitted-side rotating portion 50 is released.

Second clutch unit:
While the configuration and operation of the first clutch unit 9 according to the second embodiment have been described above, the configuration and operation of the second clutch unit 10 are substantially the same as those of the first clutch unit 9. However, the rotation direction of the second drive shaft 32 and the second driven shaft 84 of the second clutch unit 10 is the second rotation direction (clockwise direction), which is opposite to the rotation direction of the first drive shaft 27. is there.

  That is, when the second shielding material 4 is raised (rolled up), it is opposite to the case where the first shielding material 3 is rolled up, and the operation code is pulled in the other direction to operate, and the pulley 35 is rotated in the first rotation. When rotating in the direction (counterclockwise direction), in FIG. 3, both the first driving gear 37 and the second driving gear 38 rotate in the second rotation direction (clockwise direction) via the intermediate gear 36.

  The second driving gear 38 rotates in the second rotational direction (clockwise direction) in FIG. 3 via the second one-way clutch 40 of the second transmission-side rotating portion 31 of the second clutch unit 10. 2 is transmitted to the drive shaft 32, and the second drive shaft 32 rotates in the second rotation direction (clockwise direction). The rotation of the first driving gear 37 is not transmitted to the first drive shaft 27 of the first transmission side rotation unit 26 in the first clutch unit 9 by the first one-way clutch 39.

  Thus, in response to the rotation direction of the second drive shaft 32 being opposite to the rotation direction of the first drive shaft 27, the cam groove 46 of the second cam drum 45 of the second clutch unit 10 has the first clutch As shown in FIGS. 17 and 18, the cam groove 46 of the first cam drum 44 of the unit 9 is formed so as to be opposite (axisymmetric) with respect to the rotation direction.

  In the second clutch unit 10, FIG. 17A shows that the lower clutch ball 57 is located at the base end of the lower holding groove 58 and at the main release portion 107 of the main release groove 102, and the transmission side meshing plate 61. And the transmission-side meshing plate 82 are disengaged, the upper clutch ball 55 is in a position in front of the meshing portion 96 in the winding groove 95, and the second clutch unit 10 is in a disengaged state. Is shown.

  The switching operation by the second cam drum 45 of the second clutch unit 10 to release the meshing between the transmission side meshing plate 61 of the second transmission side rotation unit 32 and the transmission side meshing plate 82 of the second transmission side rotation unit 51 is as follows. This is the same as the case of the first clutch unit 9 except that the rotation direction is reversed when raising (winding up) and when falling by its own weight.

  According to the solar shading device 120 of the second embodiment, the second clutch unit 10 also has the two clutch balls of the upper clutch ball 55 and the lower clutch ball 57 in the cam groove 46 as in the first clutch unit 9. Therefore, it is possible to prevent the meshing between the transmission-side meshing plate 61 and the transmission-side meshing plate 82 during the winding operation and holding of the shielding material, and the stability of the operation is impaired. This can be prevented.

  That is, in a state where the upper clutch ball 55 is positioned at the stop portion 97, the lower clutch ball 57 is a meshing portion formed linearly in the circumferential direction of the second cam drum 45 as shown in FIG. Therefore, the movement of the second cam drum 45 in the axial direction (the movement in the right direction in FIG. 18A) is restricted. As a result, it is possible to prevent the meshing between the transmission side meshing board 61 and the transmission side meshing board 82 during the winding operation.

  Similarly, when the upper clutch ball 55 is positioned on the holding portion 98, the lower clutch ball 57 is meshed with the second cam drum 45 formed linearly in the circumferential direction as shown in FIG. Since it is located in the portion 96, the movement of the second cam drum 45 in the axial direction (movement in the right direction in FIG. 18B) is restricted.

  Thereby, in the holding state where the second shielding member 4 does not move up and down, even if an external force in the axial direction is applied to the second cam drum 45 due to an earthquake or the like, the transmission side meshing plate 61 and the transmission side meshing plate 82 Can be prevented from being disengaged, and the stability of the operation can be prevented from being impaired.

  As described above, the solar radiation shielding device according to the second embodiment of the present invention has been described. However, the second embodiment is not limited to such a configuration, and for example, in the first clutch unit 9 and the second clutch unit 10. Although the configuration in which two holding grooves and two clutch balls are provided as the plurality of holding grooves and the plurality of clutch balls has been described, a configuration in which three or more holding grooves and three or more clutch balls are provided may be employed.

  As mentioned above, although the form for implementing the solar radiation shielding apparatus which concerns on this invention was demonstrated based on Example 1, 2, this invention is not limited to such an Example, and is described in a claim It goes without saying that there are various embodiments within the scope of the technical matters stated.

  Since the solar shading device according to the present invention is configured as described above, not only the solar shading device provided with one shielding material suspended from the head box, but also two shields suspended from the head box. The present invention is applicable to a twin type solar shading device in which the materials are switched by a single loop-shaped operation code and are moved up and down independently.

  In addition, the present invention can be applied to a solar shading device such as a raised curtain device (such as a roman shade), a pleated screen device, a shutter device, and a blind device as the solar shading device.

1 Solar radiation shielding device
2 Headbox
3 First shielding material
4 Second shielding material
8 Pulley operation drive device
9 First clutch unit
10 Second clutch unit
13 First hoisting rotation axis
14 Second hoisting pivot
15 First winding roller
16 Second winding roller
21 Lifting cord
22 Bottom rail
25 Operation code
26 1st transmission side rotation part
27 First drive shaft
31 2nd transmission side rotation part
32 Second drive shaft
35 pulley
36 Intermediate gear
37 1st driving gear
38 Second driving gear
39 First one-way clutch
40 Second one-way clutch
44 1st cam drum
45 Second cam drum
46 Cam groove
47 Cam cover
48 Center hole of cam cover
50 1st receiving side rotation part
51 Second transmitted side rotating part
52 Clutch case
55 Upper clutch ball
56 Upper holding groove
57 Lower clutch ball
58 Lower holding groove
59 Clutch spring cylinder
60 Clutch spring
61 Transmission side meshing board
64 Spline part of the first drive shaft
65 torus
68 Spline part of clutch spring cylinder
69 One end of clutch spring
72 Clutch case body
73 Clutch case lid
74 Opening of clutch case lid
77 Base end of cam drum
78 Engagement part of cam drum
81 First driven shaft
82 Transmitted side meshing board
83 connector 84 second driven shaft
86 Fastening ring
87 Fastening plate
88 screws
91 Spline part of the first driven shaft
92 Positioning ring
95 Winding groove
96 meshing part
97 Stopping part
98 Holding part
102 Main release groove
103 Sub-release groove 104 Branch to sub-release groove
106 Slope of main release groove
107 Main release part
110 Cam groove bifurcation
111 Secondary release section
120 solar shading device

Claims (9)

A pulley operation driving device provided in the head box and rotated by an operation cord;
A winding rotation shaft for raising the shielding material hanging downward from the head box;
A solar radiation shielding device comprising: a clutch unit that selectively switches between a transmission state in which the rotational force of the pulley operation driving device is transmitted to the hoisting rotation shaft and a non-transmission state in which it is not transmitted;
The clutch unit includes a transmission-side rotating portion that is connected to the pulley operation driving device and has a meshing plate, a transmission-side rotating portion that is connected to the winding rotation shaft and has a meshing plate, and a cam drum having a cam groove formed on the peripheral surface. A clutch case that is attached to the head box and rotatably accommodates the cam drum, a holding groove that is linearly formed in the axial direction on the inner surface of the clutch case, and one axial end and the other end of the holding groove in the holding groove A clutch ball that is movable only in the axial direction in the range between the two and moves relative to the cam drum in the cam groove,
A plurality of the holding grooves are provided on the inner surface of the clutch case with an interval in the inner circumferential direction, a plurality of the clutch balls are provided, and the plurality of clutch balls are provided in each of the plurality of holding grooves. Are arranged one by one,
When the cam drum rotates in one rotation direction due to the rotation of the transmission side rotation part, and any one of the plurality of clutch balls comes to the meshing part located on either the proximal end side or the distal end side in the cam groove, A transmission state in which the meshing plate of one of the transmission-side rotation unit and the transmission-side rotation unit moves in a direction relatively approaching in the axial direction with respect to the meshing plate of the other rotation unit and meshes with each other. When the one of the plurality of clutch balls comes to the release portion located on the other of the proximal end side and the distal end side in the cam groove, the one rotating portion is in relation to the other rotating portion. It is a configuration that moves in a direction away from each other in the axial direction, releases the meshed state, and enters a non-transmitting state,
The length of the holding groove in the axial direction is shorter than the length of the gap between the meshing portion and the releasing portion in the cam groove in the axial direction.   By operating the operation cord, the clutch unit is in a state where the cam drum is stopped and the shielding material can be wound up and raised, a state where the shielding material can be held without lowering its weight, and a state where the shielding material can be lowered by its own weight. Any one of the plurality of clutch balls other than the one is positioned at the end of the holding groove when the shielding material can be raised and held. The solar radiation shielding apparatus according to claim 1, wherein the movement of the cam drum in the axial direction is restricted.   The transmission-side rotating portion has a drive shaft that is rotated by a pulley operation drive device, and a clutch spring cylinder that is spline-coupled to the drive shaft and wound with a clutch spring, and one end portion of the clutch spring is engaged with the cam drum. The clutch spring cylinder moves in the axial direction together with the cam drum via the clutch spring, and the cam drum can be rotated via the clutch spring. When the rotation of the cam drum and the clutch spring is restricted, the clutch spring cylinder is The shielding member operating device according to claim 1, wherein the shielding member operating device can rotate while sliding with respect to the clutch spring.   The driven side rotating part has a driven shaft that rotates together with the meshing plate of the transmitted side rotating part, and the driven shaft is connected to a hoisting rotating shaft. The solar radiation shielding apparatus as described in any one. The cam groove has a winding groove formed endlessly on the cam drum, and a release groove formed by branching from the winding groove,
The winding groove has a meshing part, a stop part and a holding part,
The stop portion is formed to be curved in a convex shape toward the other rotation direction in which the cam drum rotates, and the one of the clutch balls is located at the stop portion, and the other one other than the one When the one is located at the meshing portion, the rotation of the cam drum in one rotational direction is restricted and stopped, and the movement of the cam drum in the axial direction is restricted,
The holding portion is formed to be curved in a convex shape toward the one rotation direction in which the cam drum rotates, and the one of the clutch balls is located in the holding portion, and the other one other than the one When the one is located at the meshing portion, the cam drum is stopped and held in the other rotation direction, and the cam drum is restricted from moving in the axial direction.
The solar radiation shielding device according to any one of claims 1 to 4, wherein the release groove is branched from the winding groove and has an inclined portion and the release portion. The meshing disk of the one rotating part is a meshing disk of the transmitted-side rotating part, and the meshing disk is movable in the axial direction relative to the driven shaft by spline coupling to the driven shaft. It is attached and is rotatable relative to the cam drum, and is provided so as to be movable in the axial direction together with the cam drum.
The meshing board of the other rotating part is a meshing board of the transmission side rotating part, and the meshing board is fixed to the tip of the drive shaft of the transmitting side rotating part. The solar radiation shielding device described. The meshing board of the one rotating part is a meshing board that the transmission side rotating part has, and the meshing board is fixed to the tip of the clutch spring cylinder,
The meshing board of the other rotating part is a meshing board of the transmitted side rotating part, and the meshing board is fixed to the base end of the driven shaft. Solar shading device.   Two sets comprising a clutch unit and a winding rotation shaft are provided, and the operation code of the pulley operation driving device is in a loop shape, and one of the two sets is operated by operating the operation code in one direction. 8. The structure according to claim 1, wherein the rotational force is transmitted only to one of the two sets and the rotational force is transmitted only to the other of the two sets by operating the operation cord in the other direction. Twin type solar shading device.   The pulley operation driving device includes an intermediate gear that rotates by operation of an operation cord, a first driving gear and a second driving gear that mesh with the intermediate gear, and rotation in one rotation direction of the first driving gear among the two sets. The first one-way clutch that transmits the rotational force to only one of the second and the second driving gear in the second rotational direction transmits the rotational force only to the other of the two sets. A twin-type solar radiation shielding device according to claim 1, wherein the twin-type solar radiation shielding device is provided with a clutch.

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