JP6523029B2 - Solar radiation shielding device - Google Patents

Description

  The present invention relates to a solar radiation shielding device that raises and lowers at least one shielding material suspended from a head box with a loop-like raising and lowering operation cord. Here, the solar radiation shielding device is a pleated screen device, a shutter device, a blind device or the like, and in these devices, the shielding material is a member that shields the solar radiation, and is a pleated screen, a shutter, a blind or the like.

  When the solar radiation shielding device according to the present invention is applied to a twin type solar radiation shielding device in which two shielding members suspended from a head box are moved up and down, the two shieldings are performed by a single looped lifting operation code. It is possible to switch between raising and lowering any of the materials and to move them independently.

  As such two shielding materials, for example, in a twin-type solar radiation shielding apparatus, an upper shielding material and a lower shielding material disposed vertically through an intermediate rail, or a shielding material on the indoor side and an outdoor side There are double shielding materials before and after the shielding material.

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

  Further, the double solar radiation shielding material on the indoor side and the outdoor side can be independently pulled up by one operation code, and the first solar radiation shielding material can be operated by operating one of the operation cords. The first clutch unit and the first stopper unit that can select between the pull-up operation, the fall operation by the own weight, and the fall prevention operation of the own weight, and the second solar radiation shield pulled up by the operation of the other operation code There is known a configuration provided with a second clutch unit and a second stopper unit capable of selecting an operation, a lowering operation by its own weight, and an operation of preventing its own weight from falling (see Patent Document 2).

Unexamined-Japanese-Patent No. 2010-101069 Patent No. 4119692 gazette

  Although the clutch unit in the above-mentioned prior art (patent document 2 etc.) enables pulling-up operation of the solar radiation shielding material and lowering operation by its own weight, it is necessary to provide a stopper unit provided with a stopper groove separately from the clutch unit. There is a problem that the number of parts increases and the structure becomes complicated.

  The present invention is intended to solve the above-mentioned conventional problems, and the lifting and lowering operation of the shielding material suspended from the head box is performed only in one direction of the single loop lifting operation code. A solar radiation shielding device that can be switched by pulling operation of Furthermore, it is possible to realize a solar radiation shielding device having a simple configuration and a small number of parts, which is provided with a clutch unit also having the function of a stopper unit.

  SUMMARY OF THE INVENTION In order to solve the above problems, the present invention has a pulley operation drive device provided in a head box and rotated by an operation cord, a winding pivot shaft for raising a shielding material suspended downward from the head box, and a pulley A solar radiation shielding device comprising: a clutch unit that selectively switches between a transmission state for transmitting the rotational force of the operation drive device to the take-up rotation shaft and a non-transmission state for non-transmission; A transmission-side rotation part connected to the apparatus and having a meshing disc, a transmission-side rotation part connected to the take-up rotation shaft and having a meshing disc, a cam drum having a cam groove formed on its peripheral surface, and a cam drum attached to a head box A clutch case for rotatably accommodating therein, 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 And a clutch ball movable only in the axial direction in a range between one end and the other end in the axial direction, and relatively moving with respect to the cam drum in the cam groove, and the cam drum by rotation of the transmission side rotation portion Rotates in one rotational direction, and the clutch ball comes to the meshing portion positioned on either the proximal end side or the distal end side of the cam groove, the transmission side rotation portion or the transmission side rotation portion The meshing disc of the rotating part moves in a direction relatively approaching in the axial direction with respect to the meshing disc of the other rotating part, and the transmission state in which the meshing parts mesh with each other is turned. When the cam drum rotates in the other rotation direction opposite to the one rotation direction and the clutch ball comes to the release portion positioned on the other of the base end side and the tip end side in the cam groove, the one rotation The rolling portion moves in a direction relatively away in the axial direction relative to the other rotating portion to release the meshed state from each other and to be in the non-transmission state, and the axial length of the holding groove The present invention provides a solar radiation shielding device characterized in that the cam groove is formed shorter than the axial distance between the engaging portion and the releasing portion.

  The clutch unit is configured to be able to select either the state in which the shielding material can be raised, the state in which the shielding material can be lowered by its own weight, or the state in which the shielding material can be held without lowering its weight. Is preferred.

  The transmission side rotation portion has a drive shaft rotated by a pulley operation drive device, and a clutch spring cylinder splined to the drive shaft and having a clutch spring wound thereon, and one end of the clutch spring is engaged with the cam drum The clutch spring cylinder axially moves with the cam drum via the clutch spring and enables the cam drum to rotate. When rotation of the cam drum and the clutch spring is restricted, the clutch spring cylinder is opposed to the clutch spring It is preferable to be able to rotate while sliding.

  It is preferable that the transmission-side rotation unit has a driven shaft that rotates with the meshing disc of the transmission-side rotation unit, and the driven shaft is connected to the winding and rotating 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 an engagement portion, a stop portion and a holding portion, The stopping portion is formed to be convexly curved in the other rotation direction in which the cam drum rotates, and when the clutch ball is positioned at the stopping portion, the rotation in one rotational direction of the cam drum is restrained. When stopped, the holding portion is formed to be convexly curved in the one rotation direction in which the cam drum rotates, and when the clutch ball is positioned in the holding portion, rotation of the cam drum in the other rotation direction is performed. It is preferable to stop and hold, and the release groove is branched from the winding groove and has an inclined portion and the release portion.

  The meshing disc of the one rotating portion is the meshing disc which the driven side rotating portion has, and the meshing disc is axially movable relative to the driven shaft by spline connection to the driven shaft. It is mounted, is rotatable relative to the cam drum, and is axially movable with the cam drum, and the meshing disc of the other rotary part is the meshing disc which the transmission side rotary part has Preferably, the meshing disc is fixed to the tip of the drive shaft of the transmission side rotation part.

  The meshing disc of the one rotary part is a meshing disc which the transmission side rotary part has, the meshing disc is fixed to the tip of the clutch spring cylinder, and the meshing disc of the other rotary part is the transmission side It is preferable that it is an interlocking board which a rotation part has, and this interlocking board is a structure fixed to the base end of a to-be-driven shaft.

  There are two sets of clutch units and a winding rotation shaft, and the operation code of the pulley operation drive device is loop-shaped, and one of the two sets is operated by operating the operation code in one direction. It is preferable to transmit the rotational force to only one of the two sets by transmitting the rotational force only and operating the operation cord in the other direction.

  The pulley operation drive device includes an intermediate gear that is rotated by the operation of the operation code, a first driving gear and a second driving gear that are in mesh with the intermediate gear, and rotation of one rotation direction of the first driving gear among the two sets. A first one-way clutch transmitting the rotational force to only one of the two, and a second one-way transmitting the rotational force to the other one of the two sets in the other rotational direction of the second driving gear It is preferable that it is a structure provided with a clutch.

  According to the solar radiation shielding apparatus according to the present invention, it is possible to switch the raising and lowering operations of the shielding material suspended from the head box by the pulling operation in only one direction of the single looped elevator operation code. is there. In addition, since the clutch unit having both the function as a clutch and the function as a stopper unit is provided, the number of parts can be reduced and the configuration can be simplified.

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, a 1st clutch unit, and a 1st clutch unit. It is a disassembled perspective view of the pulley operation drive device of Example 1,2. FIG. 2 is a cross-sectional view of a pulley operation drive device, a first clutch unit, and a first clutch unit according to the first embodiment. 5 is an exploded perspective view of a first clutch unit of Embodiment 1. FIG. It is a figure explaining an effect | action with the developed 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 a developed view of the 1st cam drum of the 1st clutch unit of Example 1, (a) shows a halt condition, and (b) shows a holding condition. It is a figure explaining an effect | action with the developed view of the 2nd cam drum of the 2nd clutch unit of Example 1, (a) shows a cancellation | release state, (b) shows a meshing state. FIG. 7 is a cross-sectional view of a pulley operation drive device, a first clutch unit, and a first clutch unit according to a second embodiment. FIG. 10 is an exploded perspective view of a first clutch unit of the second embodiment. It is a figure which shows the principal part of the 1st clutch unit of Example 2, (a) is a perspective view of a cam drum, (b) is a perspective view which shows the disassembled state of a cam drum, a clutch spring cylinder, and a clutch spring. , (C) is a front view seen from the proximal side in the axial direction. It is a figure explaining an effect | action with the developed view of the 1st cam drum of the 1st clutch unit of Example 2, (a) shows a cancellation | release state, (b) shows a meshing state. It is a figure explaining an effect | action with the developed view of the 1st cam drum of the 1st clutch unit of Example 2, (a) shows a stop state, (b) shows a holding state. It is a figure explaining an effect | action with the developed view of the 2nd cam drum of the 2nd clutch unit of Example 2, (a) shows a cancellation | release state, (b) shows a meshing state.

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

  The solar radiation shielding device according to the present invention is a solar radiation shielding device that operates the operation code to raise and lower the shielding material. Here, the rising of the shielding material has various configurations, such as a configuration in which the lifting cord of the shielding material is rolled up and pushed up, and a configuration in which the shielding material itself is rolled up on the winding roller. For example, it is a solar radiation shielding device capable of rolling up and lowering the shielding material by covering the shielding material suspended from the head box in one direction with a single loop operation code.

  Such a solar radiation shielding apparatus according to the present invention can not only be applied to a solar radiation shielding apparatus provided with a single shielding material suspended from a head box, but also includes two shielding materials suspended from a head box. The present invention is also applicable to a twin-type solar radiation shielding device which is switched by a single loop operation code and moved up and down independently.

  The two shielding members in the twin-type solar shielding device are the upper and lower shielding members, or the shielding members on the front and rear sides of the indoor shielding member and the outdoor shielding member. Moreover, as a shielding material, it is applicable to a raised curtain (Roman shade), a pleated screen, a shutter, a blind, etc.

Example 1
Hereinafter, Example 1 of the solar radiation shielding apparatus based on this invention is demonstrated with reference to FIGS. 1-8. The first embodiment is a configuration in which the present invention is applied to a twin-type solar radiation shielding apparatus, in particular to a twin-type tucking-up curtain apparatus.

overall structure:
FIG. 1 is a view for explaining the overall configuration of a solar radiation shielding apparatus 1 according to an 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 material suspended from the head box 2 to the indoor side. And 4 are provided. In the first embodiment, as the first shielding member 3 and the second shielding member 4, there are provided raised curtains.

  The head box 2 is provided at one end (right end in FIG. 1) with a pulley operation drive device 8 as shown in FIG. 2 and FIG. At the upper and lower portions in the head box 2, a first clutch unit 9 and a second clutch unit 10 as shown in FIGS. 1 and 2 respectively, a first winding pivot shaft 13 and a second winding pivot shaft 14 and , And a first winding roller 15 and a second winding roller 16.

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

  The first winding roller 15 and the second winding roller 16 roll up the first raising and lowering cord and the second raising and lowering cord 21 for raising the first shielding member 3 and the second shielding member 4, respectively. Since the first lifting and lowering cord is located on the outdoor side, although not shown in FIG. 1, the same reference numeral 21 as the second lifting and lowering cord is used throughout the specification.

  The lower ends of the first lifting cord and the second lifting cord 21 are attached to the lower ends of the first shielding member 3 and the second shielding member 4, respectively. The bottom rail provided at the lower end of the first shielding member 3 is located outside the room, and thus is not illustrated in FIG. 1, but the same reference numeral as the bottom rail provided at the lower end of the second shielding member 4 22 is used in the specification.

  Hereinafter, the structure of each part of the solar radiation shielding apparatus 1 is demonstrated. In the present specification and claims, “axial direction” is the longitudinal direction of the head box 2, and more specifically, an axis such as a first drive shaft 27 and a first winding pivot shaft 13 described later. Direction (left and right direction in FIG. 1), “proximal side” means the side closer to the pulley operating drive 8 (right end side in FIG. 1) in the axial direction, “tip side” means pulley operating drive The side far from 8 (the left end side in FIG. 1), that is, the opposite side to the proximal side is referred to.

Pulley operation drive:
The pulley operation drive device 8 pulls an operation cord 25 (see FIG. 1) formed of a loop-like (endless) ball chain, and will be described later in detail. The second drive shaft 32 of the first drive shaft 27 and the second drive shaft 32 of the second transmission side rotation unit 31 are rotationally driven. In the first embodiment, the first drive shaft 27 and the second drive shaft 32 rotate in opposite directions.

  As shown in FIGS. 1, 2 and 3, the pulley operation drive device 8 includes a pulley 35, an intermediate gear 36 rotating with the pulley 35, and a first drive gear 37 and a second drive gear meshing with the intermediate gear 36. And a first one-way 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 transmits the rotation only in the first rotation direction (the counterclockwise direction in the first embodiment) to the first drive shaft 27. The second one-way clutch 40 receives the output of the second drive gear 38 and transmits the rotation only in the second rotation direction (clockwise direction in the present embodiment) to the second drive shaft 32. Each of the first one-way clutch 39 and the second one-way clutch 40 uses a well-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, for example, in the clockwise direction (second rotation direction) in FIG. The first driving gear 37 is rotated in the counterclockwise direction (first rotational direction) through the intermediate gear 36, and the first drive shaft 27 is rotated through the first one-way clutch 39 through the first rotation. It can rotate in the direction (counterclockwise direction; see solid arrow in FIG. 5).

  Further, when the operation code 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 The second drive shaft 32 can be rotated in the second rotation direction (clockwise direction) via the second one-way clutch 40 by rotating in the second rotation direction (clockwise direction).

Clutch unit:
The first clutch unit 9 and the second clutch unit 10 respectively transmit the rotation of the pulley operation drive device 8 to the first hoisting pivot shaft 13 and the second hoisting pivot shaft 14 and do not transmit the rotation. , Switch.

  Furthermore, the first clutch unit 9 and the second clutch unit 10 are the stopper units used in the conventional solar radiation shielding device (hold the solar radiation shielding member in a rolled up state or release the holding and release the solar radiation shielding material by its own weight) It also has a function of lowering means (see Patent Document 2 etc.). Thus, the configuration in which the clutch unit also has the function of the stopper unit as described above is also a feature of the present invention.

  The first clutch unit 9 and the second clutch unit 10 are configured as described later with reference to the first cam drum, as the directions of rotation transmitted from the pulley operation drive 8 to the first and second drive shafts 27 and 32 are opposite to each other. The directions of the cam groove 46 of 44 and the cam groove 46 of the second cam drum 45 are opposite to each other (in line symmetry) with respect to the rotational direction of the cam drum.

  Also, although described later, the winding direction of the clutch spring 60 is not shown, corresponding to the direction of rotation of the second drive shaft 32 being opposite to the direction of rotation of the first drive shaft 27, but the first clutch The direction is opposite to that of 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 grooves and the clutch springs are slightly different due to the rotation directions being opposite to each other. Therefore, hereinafter, the first clutch unit 9 will be described.

  As shown in FIGS. 4 and 5, the first clutch unit 9 includes a first transmission-side rotation portion 26 connected to the pulley operation drive device 8 and a first transmission-receiving portion connected to the first winding rotation shaft 13. A side rotation portion 50, a first cam drum 44 in which a cam groove 46 having a substantially hemispherical cross section is formed on the outer peripheral surface, a clutch case 52 rotatably accommodating the first cam drum 44, and an inner surface of the clutch case 52 in the axial direction And a holding groove 56 which holds the clutch ball 55 movably within a predetermined range in the axial direction and is held in the holding groove 56 and in the cam groove 46. And a clutch ball 55 which moves relative to the first cam drum 44.

  The first transmission side rotation portion 26 includes a first drive shaft 27, a clutch spring cylinder 59 spline-connected, a clutch spring 60, and a meshing disc 61 fixed to the tip of the first drive shaft 27. There is. The meshing board 61 is provided on the first transmission-side rotating portion 26, and hence, it will be referred to as "transmission-side meshing board 61" hereinafter.

  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 pulls the operation cord 25 in one direction in a first rotation direction (counterclockwise direction). It rotates and is provided with a spline portion 64 and an annular portion 65. The transmission-side meshing board 61 is fitted and fixed to the end of the first drive shaft 27, and rotates with the first drive shaft 27.

  The clutch spring cylinder 59 has a spline portion 68 formed on the inner peripheral surface thereof, and is spline-connected to the first drive shaft 27. Thus, the clutch spring barrel 59 rotates with the first drive shaft 27 and is relatively movable in the axial direction along the first drive shaft 27.

  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 barrel 59 by its elasticity, and rotates integrally when the clutch spring barrel 59 rotates.

  However, the clutch spring 60 rotating with the clutch spring barrel 59 restrains its rotation via the one end portion 69, and when a force against the elastic force acts, the tightening force on the clutch spring barrel 59 is weakened. Therefore, the clutch spring cylinder 59 is loosened by the clutch spring 60 and rotates relative to the clutch spring 60 in a sliding manner.

  The clutch case 52 includes a clutch case main body 72 and a clutch case lid 73. The cam cover 47 is attached to the base end of the first cam drum 44, and 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 barrel 59, including the transmission side meshing disc 61 fixed to the tip thereof. An annular portion 65 provided on the base end side of the first drive shaft 27 is rotatably fitted in the opening 74 of the clutch case lid 73.

  As shown in FIG. 5, the first cam drum 44 has a base end 77 cut away to form an engaging portion 78, and the engaging portion 78 is engaged with the one end 69 of the clutch spring 60. doing. Thus, the first cam drum 44 can rotate together with the clutch spring barrel 59. Further, the first cam drum 44 together with the clutch spring barrel 59 is axially movable relative to the first drive shaft 27.

  FIG. 11 is a perspective view showing a second cam drum 45, a clutch spring barrel 59 and a clutch spring 60 in Example 2 to be described later, and Example 1 corresponds to the cam groove 46 of the second cam drum 45 and the clutch spring 60. The first cam drum 44, the clutch spring barrel 59, and the clutch spring 60 are substantially the same as the first cam drum 44, the clutch spring barrel 59, and the clutch spring 60 except for the orientation of the one end portion 69 etc.

  As described above, the cam groove 46 is formed on the outer peripheral surface of the first cam drum 44, and the holding groove 56 for holding the clutch ball is linearly formed in the axial direction on the inner surface of the clutch case main body 72. It is formed. The clutch ball 55 is rotatably fitted in the cam groove 46 and the holding groove 56. Although the holding groove 56 is only schematically shown in FIG. 6 and the like for reference, the second clutch unit 10 is shown in FIG.

  As shown in FIGS. 4 and 5, the first driven-side rotating unit 50 includes a first driven shaft 81 and an engagement disc 82 spline-connected to the first driven shaft 81. The meshing disc 82 is provided on the first transmission-side rotating unit 50, and hence, the meshing disc 82 is hereinafter referred to as a "transmission-side meshing disc 82".

  The proximal end side of the first driven shaft 81 is rotatably inserted into the clutch case 52 and the first cam drum 44. The tip end side of the first driven shaft 81 is connected to the first winding pivot shaft 13 by a connector 83, 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 base end side of the first driven shaft 81.

  The driven side engaging disc 82 is rotatable relative to the first cam drum 44 in the first cam drum 44, and is axially movably provided with the first cam drum 44 by the positioning ring 92. . More specifically, the transmission-side engaging disc 82 is splined to the spline portion 91 of the first driven shaft 81 so as to be rotatable together with the first driven shaft 81, and the first driven shaft 81. Relative to each other in the axial direction.

  6 and 7 are developed views of the cam groove 46 formed on the outer peripheral surface of the first cam drum 44 of the first clutch unit 9. FIG. The clutch case 52 is fixed to the head box 2 and provided. The first cam drum is capable of moving the holding groove 56 axially formed in the axial direction on the inner surface of the clutch case 52 in the axial direction. It has shown typically in order to show an axial relative position with 44.

  The receiving side engaging disc 82 is configured to move in the axial direction together with the cam groove 46, but in FIG. 6 and FIG. 7, the receiving side engaging disc 82 is the proximal end of the first cam drum 44 for convenience of explanation. And schematically shown. Furthermore, the transmission-side meshing board 61 which does not move in the axial direction is schematically shown to face the transmission-side meshing board 82.

  The cam groove 46 includes, as a main groove, a winding groove 95 (refer to a path indicated by an alternate long and short dash line in FIGS. 6 and 7) which is continuously formed endlessly around the circumference. In the winding groove 95, a meshing portion 96 curved in a convex shape toward the tip end side (left side in FIGS. 6 and 7), and in a direction opposite to the first rotation direction (rolling up direction) of the first cam drum 44. A convexly curved stop portion 97 and a convexly curved holding portion 98 in the first rotation direction of the first cam drum 44 are provided.

  Although described later, when the clutch ball 55 moves relative to the meshing portion 96 with respect to the first cam drum 44, the transmission operation of the first clutch unit 9 is performed. Although described later, when the clutch ball 55 moves relative to the first cam drum 44 and is positioned relative to the stopping portion 97, the first rotation direction of the first cam drum 44 (counterclockwise direction, the first shielding member Rotation in the direction of 3) is constrained.

  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 direction) based on the weight drop of the first shielding member 3, and the clutch ball 55 holds the holding portion 98. , And the rotation of the first cam drum 44 in the second rotational direction (clockwise direction) based on the weight drop of the first shield 3 is restrained, and the weight drop of the first shield 3 is blocked. Be held, not to fall.

  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 sub release groove 103 branched from the winding groove 95 in the vicinity of the engagement portion 96 in the second rotation direction. And.

  The main release groove 102 has a sloped portion 106 directed to the proximal end side and a main release portion 107 which is the end of the inclined portion 106. As described later, when the clutch ball 55 is moved and positioned relative to the main release portion 107, the first clutch unit 9 performs the transmission release operation (see FIG. 6A).

  The sub release groove 103 has an inclined portion toward the base end side and a sub release portion 111 which is a butt of the tip. As described later, when the clutch ball 55 is moved and positioned relative to the auxiliary release unit 111, the first clutch unit 9 performs the 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 place where they are branched from the winding groove 95, and the main and the sub are attached. They are equal to one another in the point of doing. Main and sub are attached to distinguish one from the other, and there is no particular meaning to the constitution and the action.

  When the first cam drum 44 rotates with the rotation of the first drive shaft 27, the clutch ball 55 axially moves within the axial length of the holding groove 56, and the inside of the cam groove 46 It moves relative to the cam drum 44. The axial length L of the holding groove 56 is defined by the release portion (main release portion 107, sub release portion 111) located on the base end side of the cam groove 46 and the engagement portion 96 located on the tip side of the cam groove 46. It is formed smaller than the axial interval D of (see FIG. 6 (a)).

  The main release portion 107 and the sub release portion 111 of the cam groove 46 are portions of the cam groove 46 located on the most proximal side in the axial direction, and the meshing portion 96 of the cam groove 46 is The axial length L of the holding groove 56 is located at the most proximal end in the axial direction of the cam groove 46 formed in the first cam drum 44 since it is a portion located substantially at the most distal end in the axial direction. It means that it is formed shorter than the length D of the axial direction of the portion to be positioned and the portion located almost at the most tip side.

  When the clutch ball 55 moves to one end and the other end of the holding groove 56, the clutch ball 55 is restrained there and can not move any more, so the first cam drum 44 moves axially relative to the restrained clutch ball 55 As a result, the clutch ball 55 can be moved and positioned to the meshing portion 96 and the main release portion 107.

  As a result, the transmission-side engaging disc 82, which moves in the axial direction together with the first cam drum 44, is engaged with the stationary transmitting-side engaging disc 61 or disengaged. The details of this point will be described in more detail in the section of operation described later.

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

Action:
(1) Lifting (rolling up) operation The operation of the solar radiation shielding apparatus 1 having the above configuration will be described below. Here, before the start of operation, the first cam unit 9 is released, that is, as shown in FIG. 6A, the transmission-side meshing disc 61 of the first transmission-side rotating portion 26 and the first transmission-side The transmission side engaging disc 82 of the rotating portion 50 is separated from each other and disengaged from each other, and from this state, the raising operation to raise the first shielding member 3 by the operation of pulling the operation code 25 in one direction The winding operation) will be described.

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

  The rotation of the first driving gear 37 in the first rotational direction (counterclockwise direction) is performed by the first drive shaft of the first transmission-side rotating portion 26 in the first clutch unit 9 via the first one-way clutch 39. The first drive shaft 27 rotates in a first rotation direction (counterclockwise in FIG. 5).

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

  When the first drive shaft 27 rotates in the first rotation direction (counterclockwise direction), as shown in FIGS. 4 and 5, the 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 a first rotational direction (counterclockwise direction) via the engaging portion 78 of the one cam drum 44.

  Then, as shown in FIG. 6A, the clutch ball 55 located at the base end of the holding groove 56 and located at the main releasing portion 107 of the main releasing groove 102 is relative to the first cam drum 44. Specifically, it passes from the main release groove 102 to the inclined portion 106 and the branch portion 110, moves to the winding groove 95, and moves in the holding groove 56 to the tip side (left direction in FIG. 6A). .

  Since the clutch ball 55 can move only in the range of the holding groove 56 in the axial direction, the movement of the clutch ball 55 in the cam groove 46 is a movement relative to the first cam drum 44.

  When the clutch ball 55 reaches the tip of the holding groove 56 ((left end in FIG. 6B)), the clutch ball 55 is further restrained from moving toward the tip in the cam groove 46, so the first cam drum 44 move axially towards the proximal end.

  Then, the transmission-side engaging disc 82, which moves in the axial direction with the first cam drum 44, also moves toward the base end, and engages with the transmitting-side engaging disc 61 as shown in FIG. 9 is in the transmission state.

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

  Furthermore, when the operation code 25 is continuously operated in the same direction, the first cam drum 44 continues to rotate in the first rotational direction (counterclockwise direction), and the clutch ball 55 as shown in FIG. 7A. The stop part 97 is reached. Then, since the clutch ball 55 is restrained by the stopping portion 97, the rotation of the first cam drum 44 is restrained and stops.

  In this state, when the first drive shaft 27 and the clutch spring cylinder 59 are rotated in the first rotation direction (counterclockwise direction) by continuing to operate the operation cord 25 in the same direction, the one end 69 of the clutch spring 60 Because the first cam drum 44 is engaged with the engaging portion 78 of the first cam drum 44, the rotation of the clutch spring 60 is stopped together with the first cam drum 44, and the tightening of the clutch spring cylinder 59 by the clutch spring 60 is loosened.

  Therefore, when the operation code 25 is operated and the rotation of the first drive shaft 27 is continued, the clutch spring barrel 59 continues to rotate while sliding relative to the clutch spring 60, and the first driven shaft 81 also continues to rotate. The rotation of the first winding and rotating shaft 13 continues, and the upward movement of the first shielding member 3 continues.

  After the first shielding member 3 is wound up to a desired height, stopping pulling the operation cord 25 in one direction and stopping the operation causes the first winding pivot shaft 13 to move by the weight of the first shielding member 3 The first driven shaft 81, the transmission side engagement disc 82, the transmission side engagement disc 61, and the first driven shaft 81 rotate in the second direction (clockwise direction) in the present embodiment. The first cam drum 44 rotates in a second direction (clockwise direction) via the drive shaft 27, the clutch spring barrel 59 and the clutch spring 60.

  By this rotation, as shown in FIG. 7B, the clutch ball 55 enters the holding portion 98 in the cam groove 46, and the second rotation direction of the first cam drum 44 due to the weight reduction of the first shielding member 3 The clockwise rotation) stops. Thereby, the first shield 3 can be held open to a desired height.

(2) Descent (rolling down) operation
When lowering the first shielding member 3 in the state (refer to FIG. 7 (b)) held at the rising position as described above, the operation code 25 may be pulled slightly in the same direction as that at the rising. In the unit 9, the clutch ball 55 advances from the holding portion 98 shown in FIG. 7B to the winding groove 95 and moves relative to the first cam drum 44 to a position beyond the branch portion 110 or the branch portion 110. Do.

  Then, when the pulling of the operation cord 25 is stopped in one direction, the first winding pivoting shaft 13 is reverse to the winding direction by the weight of the first shielding member 3, that is, the second rotation in the first embodiment. Through the first driven shaft 81, the transmission-side meshing disc 82, the transmission-side meshing disc 61, the first drive shaft 27, the clutch spring cylinder 59, and the clutch spring 60. (1) The cam drum 44 is rotated in the second rotation direction (clockwise direction).

  Then, the clutch ball 55 tries to move relative to the first cam drum 44 from the branch portion 110 into the main release groove 102 to the main release portion 107 from the inclined portion 106, but the base of the holding groove 56 At the end, the axial movement is constrained so that the first cam drum 44 moves towards the tip.

  Therefore, as shown in FIG. 6A, the transmission side engagement disc 82 and the transmission side engagement disc 61 are separated from each other, and the engagement of the two is released. As a result, the transmission side engaging disc 82, the first driven shaft 81 and the first winding pivot 13 become freely rotatable, and the first shielding member 3 is lowered by its own weight and closed.

  At this time, since the engagement between the transmission side engagement disc 82 and the transmission side engagement disc 61 is released, the second driven direction of the first driven shaft 81 due to the self weight drop of the first shielding member 3 (clockwise) Rotation) is not transmitted to the first drive shaft 27, the clutch spring barrel 59 and the first cam drum 44.

  In the lifting operation, as described above, the engagement between the transmission-side meshing disc 61 of the first transmission-side rotating portion 26 and the transmission-side meshing disc 82 of the first transmission-side rotating portion 50 is released (see FIG. From a)), the operation cord 25 is pulled in one direction to bring it into engagement as shown in FIG.

  As described above, when the operation of the operation cord 25 is immediately stopped after the meshing state, the first cam drum 44 rotates in the first rotation direction (counterclockwise direction), and although not shown, the clutch ball 55 After passing through the meshing portion 96, it enters the sub release groove 103 and is stopped by the sub release portion 111.

  Thus, as in the case where the clutch ball 55 enters the main release portion 107, the transmission side meshing disc 61 of the first transmission side rotation portion 26 and the first transmission side rotation as shown in FIG. 6A. The engagement of the transmission side engaging disc 82 of the portion 50 is released.

Second clutch unit:
The configuration and operation of the first clutch unit 9 have been described above, but 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 rotational direction of the second drive shaft 32 (see FIG. 4) of the second clutch unit 10 is the second rotational direction (clockwise direction), which is opposite to the rotational direction of the first drive shaft 27.

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

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

  Although the winding direction of the clutch spring 60 is not shown, the rotation direction of the second drive shaft 32 corresponds to the reverse of the rotation direction of the first drive shaft 27 as described above. The direction is opposite to that of the clutch spring 60.

  The cam groove 46 of the second cam drum 45 of the second clutch unit 10 and the cam groove 46 of the first cam drum 44 of the first clutch unit 9 rotate as shown in FIGS. 8 (a) and 8 (b). It is formed to be reverse to the direction (line symmetry).

  In FIG. 8A, in the second clutch unit 10, the clutch ball 55 is located at the main release portion 107 of the main release groove 102, and the engagement between the transmission side engagement disc 61 and the transmission side engagement disc 82 is released. , And indicates that the second clutch unit 10 is in the non-transmission state.

  In FIG. 8B, in the second clutch unit 10, the clutch ball 55 is positioned at the meshing portion 96, and the transmission meshing disc 61 and the transmission meshing disc 82 mesh with each other. Indicates that the communication is in progress.

  The operation of the second clutch unit 10 causes the second cam drum 45 to mesh the transmission side meshing disc 61 of the second transmission side rotary portion 31 and the transmission side meshing disc 82 of the second transmission side rotary portion 51 with each other. The switching operation for canceling the alignment is the same as in the case of the first clutch unit 9 except that the direction of rotation is reversed when raising (winding up) and lowering the own weight.

(Example 2)
Example 2 of the solar radiation shielding apparatus based on this invention is demonstrated in FIGS. 9-14. The solar radiation shielding device 120 of the second embodiment is substantially the same as the solar radiation shielding device 1 of the first embodiment. Therefore, in the description of the solar radiation shielding apparatus 120 of the second embodiment, the same reference numerals are used for the configuration common to the solar radiation shielding apparatus 1 of the first embodiment.

Overview:
The outline | summary of a structure of the solar radiation shielding apparatus 120 of Example 2 is demonstrated focusing on the structure different from the solar radiation shielding apparatus 1 of Example 1, contrasting. The overall configuration of the solar radiation shielding device 120 of the second embodiment and the pulley operation drive device 8 are the same as the solar radiation shielding device 1 of the first embodiment shown in FIGS.

  The solar radiation shielding apparatus 120 of the second embodiment differs from the solar radiation shielding apparatus 1 of the first embodiment in the configuration of part of the clutch unit (the first clutch unit 9 and the second clutch unit 10).

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

  As shown in FIGS. 9 and 10, 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 the first drive shaft 27 and the first drive shaft. A clutch spring cylinder 59 spline-coupled to the clutch 27, a clutch spring 60, and a transmission-side meshing disc 61 are provided.

  In the first transmission-side rotation unit 26 of the first embodiment, the transmission-side meshing disc 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 disc 61 of the first transmission-side rotation portion 26 of the second embodiment is fixed to the tip of the clutch spring barrel 59 and rotates integrally with the clutch spring barrel 59. It is movable relative to the axial direction.

  In addition, the transmission-side meshing disc 61 of the first transmission-side rotary portion 26 of the second embodiment moves in the axial direction together with the first cam drum 44 integrally with the clutch spring barrel 59 and through the clutch spring 60 to the first cam drum It is rotatable with 44 and can also be rotated relative to (independent of) the first cam drum 44 when the clutch spring 60 is loosened.

  Further, like the first driven side rotating unit 50 of the first embodiment, the first driven side rotating unit 50 of the second embodiment includes the first driven shaft 81 and the received side engaging disc 82.

  In the first transmission-side rotating unit 50 of the first embodiment, the transmission-side engaging disc 82 is splined to the first driven shaft 81 and is movable in the axial direction together with the first cam drum 44. The driven side engaging disc 82 is fixed to the base end of the first driven shaft 81 and does not move in the axial direction.

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

  In the first embodiment, regarding the first clutch unit 9, the transmission-side meshing disc 61 of the first transmission-side rotation portion 26 does not move in the axial direction, but the transmission-engagement disc 82 of the first transmission-side rotation portion 50 is By moving in the axial direction, engagement and disengagement of the transmission side engagement disc 61 and the transmission engagement disc 82 are performed.

  On the other hand, in the second embodiment, the transmission engaging disc 82 of the first transmission side rotating part 50 does not move in the axial direction, but the transmission side engaging disc 61 of the first transmission side rotating part 26 moves in the axial direction By doing this, the meshing and meshing cancellation of the transmission side meshing board 61 and the transmission meshing board 82 is performed.

Clutch unit:
As described above, the outline of the configuration of the solar radiation shielding apparatus 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 radiation shielding apparatus 1 of the first embodiment. Further, the configuration of the clutch unit (first and second clutch units 9 and 10) of the second embodiment will be described in detail with reference to FIGS.

  Also in the solar radiation shielding apparatus 120 according to the second embodiment, the first clutch unit 9 and the second clutch unit 10 respectively rotate the pulley operation drive device 8 on the first winding pivot shaft 13 and the second winding pivot shaft 14. It switches between the transmission state and the non-transmission state, and has a function of a stopper unit (see Patent Document 2 etc.) used in the conventional solar radiation shielding device.

  Also in the solar radiation shielding apparatus 120 according to the second embodiment, the first clutch unit 9 and the second clutch unit 10 have the directions of rotation transmitted from the pulley operation drive device 8 in opposite directions with each other, as shown in FIG. As shown in FIG. 14, the configuration and operation are the same except for the configuration in which the directions of the cam groove 46 of the first cam drum 44 and the cam groove 46 of the second cam drum 45 are mutually opposite (linearly symmetrical) in the rotational direction. It is. The configuration of the first clutch unit 9 will be described below.

  Similar to the first clutch unit 9 of the first embodiment, as shown in FIGS. 9 and 10, the first clutch unit 9 has a first transmission side rotation portion 26 connected to the pulley operation drive device 8 and a first clutch unit 9. It is formed on the inner surface of the first transmission-side rotating portion 50 connected to the winding rotational shaft 13, the first cam drum 44, the clutch case 52, and the clutch case 52, and the clutch ball 55 is in the predetermined range in the axial direction. A holding groove 56 for movably holding and a clutch ball 55 are provided.

  The first transmission side rotation portion 26 is a transmission side meshing fixed to the first drive shaft 27, a clutch spring cylinder 59 spline-connected to the first drive shaft 27, a clutch spring 60, and a tip of the clutch spring cylinder 59. The board 61 is provided.

  The first drive shaft 27 is connected to a first one-way clutch 39 of the pulley operation drive device 8, and rotates in a first rotation direction (counterclockwise direction) by an operation of pulling the operation code 25 in one direction. The clutch spring cylinder 59 is splined 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 barrel 59. The clutch spring 60 normally tightens the outer peripheral surface of the clutch spring barrel 59 by its elasticity, and rotates integrally when the clutch spring barrel 59 rotates.

  The first drive shaft 27 is rotatably inserted in the first cam drum 44 together with a clutch spring barrel 59 having a transmission side mesh disc 61 at its tip. One end portion 69 of the clutch spring 60 is engaged with an engagement portion 78 (see FIGS. 10 and 11) formed by cutting out the base end portion 77 of the first cam drum 44.

  The first cam drum 44 is rotatable with the clutch spring barrel 59 via the one end portion 69 of the clutch spring 60, and is rotatable relative to the clutch spring barrel 59 when the clutch spring 60 is loosened. Further, it is axially movable 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 and 9). The first cam drum 44 has a cam cover 47 attached at its base end, and 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 around the circumference of the outer peripheral surface of the first cam drum 44, and a clutch ball holding groove 56 is formed on the inner surface of the clutch case main body 72. The clutch ball 55 is rotatably fitted in the cam groove 46 and the holding groove 56.

  As shown in FIGS. 9 and 10, the first driven-side rotating unit 50 includes a first driven shaft 81 and a receiving-side engaging disc 82 fixed to the base end of the first driven shaft 81. Have. The base end side of the first driven shaft 81 provided with the transmission side engaging disc 82 is rotatably inserted into the clutch case 52 and the first cam drum 44. The tip end side of the first driven shaft 81 is connected to the first winding pivot 13 by a connector 83, and the first winding pivot 13 is rotated together.

  As described above, the first clutch unit 9 of the second embodiment is partially different from the first clutch unit 9 of the first embodiment in the first transmission side rotation portion 26 and the first transmission side rotation portion 50. Based on such a difference, the configuration of the cam groove 46 of the first cam drum 44 of the first clutch unit 9 also differs. 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.

  12 and 13 are developed views of the cam groove 46 formed on the outer peripheral surface of the first cam drum 44 of the first clutch unit 9. FIG. The holding groove 56 provided stationary on the inner surface of the clutch case 52 is schematically shown in order to show the axial relative position with the first cam drum 44 movable in the axial direction.

  The transmission side meshing disc 61 is configured to move in the axial direction together with the first cam drum 44, but for convenience of explanation of the operation, in FIG. 12 and FIG. The addition is shown schematically. Furthermore, the transmission-side engaging disc 82 provided stationary without being moved in the axial direction is schematically shown to face the transmission-side engaging disc 61.

  The cam groove 46 includes, as a main groove, a winding groove 95 (see a path indicated by an alternate long and short dash line in FIGS. 12 and 13) which is continuously formed endlessly in the circumferential direction. In the winding groove 95, a meshing portion 96 curved to the base end side (right side in FIGS. 12 and 13) and a convex shape curved in a direction opposite to the first rotation direction (rolling direction) of the first cam drum 44 And a holding portion 98 which is convexly curved in the first rotation direction of the first cam drum 44.

  The meshing portion 96 performs the transmission operation of the first clutch unit 9 when the clutch ball 55 is moved relative to the first cam drum 44 and positioned as described later. Although the stop portion 97 will be described later, when the clutch ball 55 is moved and positioned relative thereto, the rotation of the first cam drum 44 in the first rotation direction (counterclockwise) is restrained.

  In addition, when the holding portion 98 stops pulling away in one direction of the operation cord 25 as described later, the clutch ball 55 enters the holding portion 98 when it is released and the first based on the weight drop of the first shielding member 3 The rotation of the cam drum 44 in the second rotation direction (clockwise) is restrained, and the first shielding member 3 does not fall by its own weight.

  The cam groove 46 further has a main release groove 102 branched from the winding groove 95 near the holding portion 98 and a sub release groove 103 branched from the winding groove 95 near the meshing portion 96. The main release groove 102 has a sloped portion 106 directed to the tip end side and a main release portion 107 which is an end abutment thereof. As described later, when the clutch ball 55 is moved and positioned relative to the main release portion 107, the first clutch unit 9 performs a release operation of transmission (see FIG. 12A).

  The sub release groove 103 has an inclined portion toward the base end side and a sub release portion 111 which is a butt of the tip. As described later, when the clutch ball 55 is moved and positioned relative to the auxiliary release unit 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 clutch ball 55 moves axially within the holding groove 56 in the axial length L of the holding groove 56 and the cam groove 46. The inside is moved relative to the first cam drum 44. The axial length L of the holding groove 56 is in the axial direction relative to 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 of the cam groove 46. It is formed smaller than the interval D (see FIG. 12A).

  When the clutch ball 55 moves to one end and the other end of the holding groove 56, the clutch ball 55 is restrained there and can not move any more, so the first cam drum 44 moves axially relative to the restrained clutch ball 55 Thus, the clutch ball 55 can be moved and positioned to the main release portion 107 and the meshing portion 96.

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

  The cam groove 46 of the second cam drum 45 of the second clutch unit 10 corresponds to the configuration in which the rotational direction of the second drive shaft 32 is opposite to the rotational direction of the first drive shaft 27. As shown in FIGS. 14A and 14B, the cam groove 46 of the first cam drum 44 of No. 9 is formed so as to be in the opposite direction (linear symmetry) with respect to the rotational direction.

Action:
The operation of the solar radiation shielding apparatus 120 of the second embodiment having the above configuration is substantially the same as the solar radiation shielding apparatus 1 of the first embodiment, but as described above, in the cam units (first and second cam units 9 and 10) Because they are partially different, the following description will be focused on the action based on the different configuration.

(1) Ascending (winding up) operation Here, before the operation starts, the first clutch unit 9 is released, that is, as shown in FIG. 12A, the transmission side meshing of the first transmission side rotation portion 26 The receiving side engaging disc 82 of the disc 61 and the first receiving side rotary part 50 is separated from each other, and the engagement is released. From this state, the operation cord 25 is pulled in one direction to operate the first shielding member 3. The operation of raising the (lifting operation of winding up the lifting cord) will be described.

  When the operation code 25 is pulled in one direction and operated, and the pulley 35 is rotated in the second rotation direction (clockwise direction), in FIG. 3, the first driving gear 37 and the second driving gear via the intermediate gear 36. Both 38 rotate in the first rotation direction (counterclockwise direction).

  This rotation is transmitted to the first drive shaft 27 of the first transmission side rotation portion 26 in the first clutch unit 9 through the first one-way clutch 39, and the first drive shaft 27 is driven in the first rotational direction In the embodiment, it rotates in the counterclockwise direction).

  When the first drive shaft 27 rotates in the first rotation direction (counterclockwise direction), the first cam drum 44 is moved to the first cam drum 44 via the one end portion 69 of the clutch spring 60 wound around the clutch spring cylinder 59. Rotate in the direction of rotation (counterclockwise).

  Then, as shown in FIG. 12A, the clutch ball 55 stopped at the main releasing portion 107 of the main releasing groove 102 is relatively main releasing portion of the main releasing groove 102 with respect to the first cam drum 44. From the point 107, it passes the inclined portion 106, moves from the branch portion 110 to the winding groove 95, and moves in the holding groove 56 to the base end side (rightward in FIG. 12A).

  When the clutch ball 55 reaches the base end of the holding groove 56 ((right end in FIG. 12A)), the first cam drum 44 is axially tipped because the further axial movement is restrained. Move to the side.

  Then, the transmission side meshing board 61 of the clutch spring barrel 59, which moves in the axial direction with the first cam drum 44, also moves to the tip end side in the axial direction, and as shown in FIG. 12 (b) The first clutch unit 9 is in the transmission state.

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

  Furthermore, when the operation code 25 is continuously operated, the first cam drum 44 continues to rotate in the first rotation direction (counterclockwise direction), and the clutch ball 55 is stopped at the stop portion 97 as shown in FIG. Reach. Then, since the clutch ball 55 is restrained by the stopping portion 97, the rotation of the first cam drum 44 is restrained and stops.

  In this state, when the first drive shaft 27 and the clutch spring cylinder 59 are rotated in the first rotation direction (counterclockwise direction) while continuing to operate the operation cord 25, the one end portion 69 of the clutch spring 60 is the first cam drum Since the first cam drum 44 is engaged with the engaging portion 78 of the clutch 44, the rotation of the clutch spring 60 is stopped, and the tightening of the clutch spring cylinder 59 by the clutch spring 60 is loosened.

  Therefore, when the operation code 25 is operated to continue the rotation of the first drive shaft 27, the rotation of the first cam drum 44 is stopped, but the clutch spring cylinder 59 continues to rotate while sliding relative to the clutch spring 60. The 1 driven shaft 81 also continues to rotate.

  When raising the first shielding material to a desired height (winding up), stopping pulling the operation cord 25 in one direction and stopping the operation, the first weight of the first shielding material 3 causes the first winding rotation shaft 13 rotates in the direction opposite to the winding direction, that is, in the second rotation direction (clockwise direction) in the second embodiment, and further, the first driven shaft 81, the receiving side meshing disc 82, and the transmission side. The first cam drum 44 rotates in a second rotation direction (clockwise direction) via the meshing board 61, the clutch spring barrel 59, and the clutch spring 60.

  By this rotation, as shown in FIG. 13B, the clutch ball 55 enters the holding portion 98, and the second rotation direction (clockwise direction) of the first cam drum 44 due to the self weight drop of the first shielding member 3. The rotation to) stops. Thereby, the first shield 3 can be held open to a desired height.

(2) Descent (rolling down) operation
When lowering the first shielding member 3 in the rolled up state, when the operation code 25 is slightly pulled in the same direction as the rising, in the first clutch unit 9, the clutch ball 55 is shown in FIG. From the holding portion 98, it advances along the winding groove 95 and moves relative to the first cam drum 44 to a position beyond the branch 110 with the main release groove 102 or the branch 110.

  Then, when stopping the operation cord 25 from pulling in one direction and stopping the operation, the first winding pivot shaft 13 rotates in the second rotation direction (clockwise direction) by the weight of the first shielding member 3. Through the first driven shaft 81, the transmission side engagement disc 82, the transmission side engagement disc 61, the clutch spring cylinder 59, and the clutch spring 60, the first cam drum 44 in the second rotational direction (clockwise direction) Rotate.

  Then, the clutch ball 55 enters into 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 107, but the axial direction at the tip of the holding groove 56 The movement of the first cam drum 44 is moved toward the proximal end side.

  As a result, as shown in FIG. 12 (a), the transmission side engagement disc 61 and the transmission side engagement disc 82 are separated from each other, and the engagement is released. Then, the transmission side engaging disc 82, the first driven shaft 81 and the first winding pivot 13 become freely rotatable, and the first shielding member 3 is lowered by its own weight and is in a closed state.

  Since the engagement between the transmission side engagement disc 61 and the transmission side engagement disc 82 is released, the rotation of the first driven shaft 81 in the second rotational 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 barrel 59 and the first cam drum 44.

  In the raising (roll-up operation) state as described above, the engagement between the transmission-side meshing disc 61 of the first transmission-side rotating portion 26 and the transmission-side meshing disc 82 of the first transmission-side rotating portion 50 is released ( From FIG. 12 (a), the operation cord 25 is pulled in one direction, and brought into engagement as shown in FIG. 12 (b), and the first shielding member 3 is wound up.

  As described above, when the operation of the operation cord 25 is immediately stopped after the meshing state, the first cam drum 44 rotates in the first rotation direction (counterclockwise direction), and although not illustrated, the clutch ball 55 After passing through the meshing portion 96, it enters the sub release groove 103 and stops at the sub release portion 111.

  Thus, as in the case where the clutch ball 55 enters the main release groove 102 (see FIG. 12A), the transmission-side meshing disc 61 of the first transmission-side rotation portion 26 and the first transmission-side rotation portion 50 The engagement of the transmission side engagement disc 82 is released.

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

  That is, in the case of raising (rolling up) the second shielding member 4, it is the reverse of the case of winding up the first covering member 3, and the operation code is pulled in the other direction to operate the pulley 35 for the first rotation. When it rotates in the direction (counterclockwise direction), in FIG. 3, the first driving gear 37 and the second driving gear 38 both rotate in the second rotation direction (clockwise direction) via the intermediate gear 36.

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

  As described above, the cam groove 46 of the second cam drum 45 of the second clutch unit 10 corresponds to the first clutch corresponding to the direction of rotation of the second drive shaft 32 being opposite to the direction of rotation of the first drive shaft 27. The cam groove 46 of the first cam drum 44 of the unit 9 is formed so as to be in the opposite direction (line symmetry) with respect to the rotational direction, as shown in FIGS. 14 (a) and 14 (b).

  In FIG. 14A, in the second clutch unit 10, the clutch ball 55 is located at the main release portion 107 at the end of the main release groove 102, and the transmission side engagement disc 61 and the transmission side engagement disc 82 are engaged. Indicates that the second clutch unit 10 is in the non-transmission state.

  In FIG. 14B, in the second clutch unit 10, the clutch ball 55 is positioned at the meshing portion 96, and the transmission meshing disc 61 and the transmission meshing disc 82 mesh with each other. Indicates that the communication is in progress.

  The switching operation for releasing the meshing of the transmission-side meshing disc 61 of the first transmission-side rotating portion 26 and the transmission-side meshing disc 82 of the first transmission-side rotating portion 50 by the second cam drum 45 of the second clutch unit 10 is The same as in the case of the first clutch unit 9, except that the direction of rotation is reversed when raising (winding up) and when lowering its own weight.

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

  Since the solar radiation shielding apparatus according to the present invention is configured as described above, not only a solar radiation shielding apparatus provided with a single shielding material suspended from the head box but also two shieldings suspended from the head box The present invention can be applied to a twin-type solar radiation shielding apparatus in which materials are switched by a single loop-like operation code and each of them is moved up and down independently.

  Further, the present invention is applicable to a solar radiation shielding device such as a raised curtain device (Roman shade or the like), a pleated screen device, a shutter device, a blind device or the like as the solar radiation shielding device.

1 Solar shading device
2 head box
3 1st shielding material
4 second shielding material
8 Pulley operation drive
9 1st clutch unit
10 Second clutch unit
13 1st Winding Axis
14 Second hoisting pivot
15 1st Winding Roller
16 Second roll-up roller
21 Lifting cord
22 bottom rail
25 Operation code
26 1st transmission side rotary part
27 1st drive shaft
31 2nd transmission side rotary part
32 second drive shaft
35 pulley
36 intermediate gear
37 1st driving gear
38 2nd drive gear
39 1st One-way Clutch
40 second one-way clutch
44 1st cam drum
45 2nd cam drum
46 cam groove
47 cam cover
48 Cam cover center hole
50 1st driven side rotation part
51 Second transmission side rotary part
52 clutch case
55 clutch ball
56 Retaining groove
59 Clutch Spring Tube
60 clutch spring
61 Transmission side meshing board
64 Spline section of the first drive shaft
65 ring part
68 Spline section of clutch spring cylinder
69 Clutch spring end
72 Clutch Case Body
73 Clutch case lid
74 Opening of clutch case lid
77 Cam drum base end
78 Cam drum engaging part
81 1st driven shaft
82 Transmission side meshing board
83 Coupling tool
86 Fastening ring
87 Fastening plate
88 screws
91 Spline part of the first driven shaft
92 Positioning Ring
95 Winding up groove
96 meshing section
97 Stop part
98 Holding unit
102 Main release groove
103 Secondary Release Groove
106 Slope of main release groove
107 Main release part
110 Cam groove bifurcation
111 Secondary Release Unit
120 sun shielding device

Claims (5)

A pulley operation drive device provided in the head box and rotated by an operation code;
A hoisting pivot 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 for transmitting the rotational force of the pulley operation drive device to the take-up rotation shaft and a non-transmission state for non-transmission.
The clutch unit includes a transmission side rotation portion connected to a pulley operation drive device and having a meshing disc, a transmission side rotation portion connected to a winding rotation shaft and having a meshing disc, and a cam drum having a cam groove formed on its peripheral surface. A clutch case attached to the head box and rotatably accommodating the cam drum, a holding groove formed linearly in the axial direction on the inner surface of the clutch case, and one end and the other of the holding groove in the axial direction in the holding groove And a clutch ball movable only in the axial direction in the range between and moving relative to the cam drum in the cam groove;
When the cam drum is rotated in one rotation direction by the rotation of the transmission side rotation part, and the clutch ball comes to the meshing part positioned on either the base end side or the tip end side of the cam groove, the transmission side rotation part and the subject The meshing disc of one of the rotating parts on the transmission side moves in a direction relatively closer to the meshing disc of the other rotating part in the axial direction, and the meshing transmission state is achieved, and the weight of the shielding material The cam drum is rotated in the other rotation direction opposite to the one rotation direction by the rotation of the transmission side rotation portion, and the clutch ball is located on the other end of the cam groove on the base end side or the tip end side When it comes, the one rotation portion moves in a direction relatively away in the axial direction with respect to the other rotation portion, thereby releasing the mutually meshed state and becoming a non-transmission state.
The axial length of the holding groove is formed shorter than the axial distance between the engagement portion and the release portion in the cam groove ,
The clutch unit is configured to be able to select either the state in which the shielding material can be raised, the state in which the shielding material can be lowered by its own weight, or the state in which the shielding material can be held without lowering its weight. A solar radiation shielding device characterized by The transmission side rotation portion has a drive shaft rotated by a pulley operation drive device, and a clutch spring cylinder splined to the drive shaft and having a clutch spring wound thereon, and one end of the clutch spring is engaged with the cam drum The clutch spring cylinder axially moves with the cam drum via the clutch spring and enables the cam drum to rotate. When rotation of the cam drum and the clutch spring is restricted, the clutch spring cylinder is opposed to the clutch spring The solar radiation shielding material operating device according to claim 1 , characterized in that it is rotatable while sliding . 3. The transmission-side rotation unit according to claim 1, wherein the transmission-side rotation unit has a driven shaft that rotates with the meshing disc of the transmission-side rotation unit, and the driven shaft is connected to the winding rotation shaft. Solar shading device as described. 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 an engagement portion, a stop portion and a holding portion,
The stopping portion is formed to be convexly curved in the other rotation direction in which the cam drum rotates, and when the clutch ball is positioned at the stopping portion, the rotation in one rotational direction of the cam drum is restrained. Stop
The holding portion is formed to be convexly curved in the one rotation direction in which the cam drum rotates, and when the clutch ball is positioned in the holding portion, the rotation of the cam drum in the other rotation direction is stopped. Hold
The solar radiation shielding device according to any one of claims 1 to 3, wherein the release groove is branched from the winding groove and has an inclined portion and the release portion . The meshing disc of the one rotary part is a meshing disc which the transmission side rotary part has, and the meshing disc is fixed to the tip of the clutch spring cylinder,
The solar radiation according to claim 3 , characterized in that the meshing disc of the other rotating part is the meshing disc which the driven side rotating part has, and the meshing disc is fixed to the base end of the driven shaft. Shielding device.

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