JP2016008498A - Shielding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shielding device that opens/closes a shielding material by rotation of a predetermined drive shaft.SOLUTION: A shielding device of the present invention includes speed regulators (governor units 36 and 37) for regulating a speed associated with opening/closing of a shielding material, by a hydraulic braking mechanism, and a fixing member 40 for fixing the speed regulator in a predetermined cabinet (head box 1). The fixing member 40 suppresses relative rotation of housings 361 and 371 of the speed regulators with respect to the cabinet, and is integrally attached to the housings 361 and 371 of the speed regulators.

Description

  The present invention relates to a shielding device that opens and closes a shielding material by rotation of a drive shaft in a rolling screen, a horizontal blind, a raised curtain, a pleated screen, a vertical blind, a panel curtain, a curtain rail, and a horizontal pulling shielding device.

  2. Description of the Related Art Conventionally, when a bottom rail is lowered by its own weight in a shielding device such as a pleated screen, a governor device is known that brakes the descent speed so as to keep it below a certain level (see, for example, Patent Document 1).

  It is known that such a governor device is configured to brake its descending speed using, for example, a centrifugal force generated by the rotation of the governor shaft (see, for example, Patent Document 2). The governor device disclosed in Patent Document 2 is provided with an input shaft that rotates in conjunction with a drive shaft that opens and closes the shielding material, and the rotation is transmitted when the input shaft rotates in the descending direction of the shielding material. A transmission cylinder is provided. When this transmission cylinder rotates, the governor shaft rotates. A case constituting the housing of the governor device is fixed in the head box, a governor drum is fixed to the case, and a governor metal and a governor weight are disposed in the governor drum. As the governor shaft rotates faster, the governor weight is more strongly rubbed against the governor drum by centrifugal force. Accordingly, the rotation of the governor shaft is suppressed to a certain speed or less.

  Similarly to the governor device described above, as a technique for constructing a braking mechanism using centrifugal force, the operation cord is operated when the shielding material is raised or lowered by the operation force of the operation cord for opening / closing the shielding material. There has been disclosed a solar shading device using a speed controller that can reliably prevent an increase in load and noise generated during operation (see, for example, Patent Document 3).

Japanese Patent No. 5417124 Japanese Patent No. 3140295 JP 2013-72183 A

  In the governor device and the speed controller disclosed in Patent Documents 1 to 3 and the like that constitute the braking mechanism using centrifugal force, the case constituting the housing of these devices is placed in the head box for each shielding device. It has a shape that is fixed and restrained from rotating.

  However, the head box of the shielding device has various shapes and sizes, and the governor can be adapted to various types of shielding devices rather than designing and incorporating a new governor device for each shielding device. An apparatus is preferred.

  Therefore, in order to adapt a common governor apparatus to headboxes having various shapes, a fixing member configured to increase the accommodation efficiency is required.

  Further, such a fixing member is required to be devised in consideration of assembly workability when the governor device is incorporated into a head box having various shapes.

  In view of the above problems, an object of the present invention is to provide a shielding device that opens and closes a shielding material by rotation of a predetermined drive shaft.

  The shielding device of the present invention is a shielding device that opens and closes a shielding material by rotation of a predetermined drive shaft, and a speed regulator that adjusts a speed associated with opening and closing of the shielding material by a hydraulic braking mechanism, and the speed A fixing member for fixing the adjuster in a predetermined housing, and the fixing member suppresses relative rotation of the housing of the speed regulator with respect to the housing and is integrated with the housing of the speed regulator. It is comprised so that it may be mounted | worn with.

  Further, in the shielding device of the present invention, the housing of the speed regulator is filled with oil, and a central shaft that is rotatable with the rotation of the drive shaft is inserted, and the rotation of the central shaft is performed with the rotation of the central shaft. A moving member that is movable along a central axis is provided, and by causing the oil flow resistance to be variable by movement of the moving member, the speed regulator causes the hydraulic braking mechanism to The fixing member is configured to suppress rotation of the housing accompanying rotation of the central axis.

  Further, in the shielding device of the present invention, the central axis has a shape that can penetrate the drive shaft in a non-contact manner, and can be configured to select transmission / non-transmission of rotation of the drive shaft with respect to the central axis The connecting member is provided on the drive shaft, and the rotation of the drive shaft is transmitted to the central shaft when the connecting member is attached to the central shaft. .

  Further, in the shielding device of the present invention, the fixing member is installed so as to be movable in the axial direction of the drive shaft in the housing in a state of being integrally attached to the housing of the speed regulator. It is characterized by being.

  In the shielding device of the present invention, the speed regulator has a substantially cylindrical housing, and the fixing member is integrally attached to one or two housings of the speed regulator. It is characterized by being comprised.

  Also, in the shielding device of the present invention, a protrusion is provided on the outer surface of the housing, and the fixing member cannot rotate the housing so that the protrusion is in a direction substantially perpendicular to the opening / closing direction of the shielding material. It is characterized by being comprised so that it may hold | maintain.

  Further, in the shielding device of the present invention, the speed regulator is configured as a pair of speed regulators that perform a braking operation in one direction, and the fixing member is inserted and held in a direction opposite to each other. It is configured to be possible.

  Further, in the shielding device of the present invention, the speed regulator is configured as a pair of speed regulators that perform a braking operation in one direction, and the fixing member intersects each protrusion of the pair of speed regulators. It is configured to be able to be arranged and held in such a manner.

  In the shielding device of the present invention, the length of the fixing member is shorter than the entire length of the housing, and the length of the protrusion is shorter than the length of the fixing member.

  Further, in the shielding device of the present invention, a second protrusion provided on the outer surface of the housing on the circumferential surface opposite to the axial center in the diameter direction with the protrusion is provided, and the fixing member is The housing is configured to be non-rotatable by the protrusion and the second protrusion.

  Moreover, the shielding apparatus of this invention WHEREIN: The said fixing member has an engaging part attached integrally with the said housing, It is characterized by the above-mentioned.

  Further, in the shielding device of the present invention, the fixing member is configured in an annular shape having elasticity in a direction in which the ring expands, and the engaging portion includes a claw portion that fixes the housing in an axially immovable manner. Features.

  According to the present invention, the governor device can be adapted to various types of shielding devices, and the assembling workability can be improved while improving the accommodation efficiency.

It is a front view which shows the outline of the shielding apparatus of one Embodiment by this invention. It is a side view which shows the outline of the shielding apparatus of one Embodiment by this invention. It is a top view which shows the outline of the shielding apparatus of one Embodiment by this invention. It is a perspective view which shows the outline of the governor apparatus and fixing member in the shielding apparatus of one Embodiment by this invention. It is a perspective view which shows the outline of the governor apparatus and fixing member in the shielding apparatus of one Embodiment by this invention. (A), (b), (c), (d) is a figure which shows the outline of the governor apparatus in the shielding apparatus of one Embodiment by this invention. (A), (b), (c), (d) is a figure explaining the state before and behind the connection regarding the connection with the governor apparatus and connection member in the shielding apparatus of one Embodiment by this invention. (A), (b), (c), (d) is a figure explaining operation | movement of the governor apparatus in the shielding apparatus of one Embodiment by this invention. (A), (b), (c) is a figure which shows the detail of the fixing member of Example 1 in the shielding apparatus of one Embodiment. (A), (b), (c), (d) is explanatory drawing which shows the detail of the fixing member of Example 1 in the shielding apparatus of one Embodiment. (A), (b), (c) is a figure which shows the detail of the fixing member of Example 2 in the shielding apparatus of one Embodiment. (A), (b), (c), (d), (e) is explanatory drawing which shows the detail of the fixing member of Example 2 in the shielding apparatus of one Embodiment. (A), (b) is a figure which illustrates the rotation direction of the 1st and 2nd drive shaft with respect to the governor apparatus using the fixing member of each Example in the shielding apparatus of one Embodiment. It is a flowchart explaining the assembly | attachment procedure of the governor apparatus and fixing member in the shielding apparatus which concerns on this invention. (A) thru | or (j) are side views of the head box in the shielding apparatus which can apply a governor apparatus.

  Hereinafter, with reference to drawings, the shielding device of one embodiment by the present invention is explained. In addition, in the present specification, with respect to the front view of the shielding device (pleated screen) shown in FIG. In the following description, the left direction in the figure is defined as the left side of the shielding device (pleat screen), and the right direction in the figure is defined as the right side of the shielding device (pleat screen). Moreover, in the example demonstrated below, with respect to the front view of the shielding device (pleated screen) shown in FIG. 1, the side to be viewed is the front side (or the indoor side), and the opposite side is the rear side (or the outdoor side). When referred to as the front-rear direction, it refers to a direction perpendicular to the illustrated surface in the front view of FIG.

(Whole device)
Hereinafter, a shielding device (pleated screen) according to an embodiment will be described with reference to the drawings. FIG. 1 is a front view schematically showing a shielding device according to an embodiment of the present invention. FIG. 2 is a side view showing an outline of the shielding device of one embodiment according to the present invention. FIG. 3 is a plan view schematically showing the shielding apparatus according to the embodiment of the present invention.

  In the pleated screen shown in FIGS. 1 to 3, a shielding material (upper screen 2) is suspended from a head box 1, and an intermediate rail 3 is attached to the lower end of the upper screen 2. A shielding material (lower screen 4) is suspended and supported from the intermediate rail 3, and a bottom rail 5 is attached to the lower end of the lower screen 4.

  For example, the upper screen 2 is a semi-transparent fabric such as a lace fabric that can be folded in a zigzag shape, and the lower screen 4 is a light-shielding fabric that can be folded in a zigzag shape. .

  First and second elevating cords 6 and 7 are inserted on both sides in the width direction of the upper screen 2, and the lower end of the first elevating cord 6 is attached to the intermediate rail 3. The second lifting / lowering cord 7 passes through the intermediate rail 3, is further inserted through the lower screen 4, and has a lower end attached to the bottom rail 5.

  The upper ends of the first and second lifting / lowering cords 6 and 7 are wound around first and second winding shafts 9 and 10 that are rotatably supported by the support member 8 in the head box 1, respectively. . That is, as shown in FIG. 3, the first and second take-up shafts 9 and 10 are supported in the headbox 1 in a state of being juxtaposed in the front-rear direction at a position above the first and second lift cords 6 and 7. The member 8 is rotatably supported.

  And the upper end part of the 1st raising / lowering cord 6 is wound around the 1st winding shaft 9, The upper end part of the 2nd raising / lowering cord 7 is wound around the 2nd winding shaft 10, and 1st and 2nd The two lifting cords 6 and 7 are wound around the first and second winding shafts 9 and 10 in opposite directions. The first and second lifting / lowering cords 6 and 7 are spirally wound or rewound based on the rotation of the first and second winding shafts 9 and 10.

  A hexagonal bar-shaped first drive shaft 11 is inserted into the first winding shaft 9 in a relatively non-rotatable manner, and a hexagonal bar-shaped second drive shaft 12 is also relatively non-rotatable in the second winding shaft 10. Is inserted. When the first drive shaft 11 is rotated in the winding direction of the first lifting / lowering cord 6, the first lifting / lowering cord 6 is wound around the first winding shaft 9, and the second driving shaft 12. Is rotated in the winding direction of the second lifting / lowering cord 7, the second lifting / lowering cord 7 is wound around the second winding shaft 10.

  An operation device 13 for rotating the first and second drive shafts 11 and 12 is attached to one end of the head box 1. A pulley 15 in the case 14 is rotatably supported on the proximal end side of the operation device 13, and an endless operation cord (for example, a ball chain) 16 is hung on the pulley 15 and suspended downward. . The pulley 15 can be driven to rotate by operating the operation cord 16.

  A gear (not shown) is integrally formed on the pulley 15, and a transmission gear (not shown) rotatably supported by the case 14 is meshed with the gear. Therefore, when the pulley 15 is rotated, the transmission gear is rotated. The rotation of the transmission gear is engaged with each input shaft of a pair of clutch mechanisms (not shown) rotatably supported by the case 14. This clutch mechanism has a known function of transmitting only rotation in one direction of each input shaft to each corresponding output shaft, and the rotation directions to be transmitted are opposite to each other. The end of the first drive shaft 11 is fitted to one output shaft of the clutch mechanism, and the end of the second drive shaft 12 is fitted to the output shaft of the other clutch mechanism.

  With such a configuration, when the operation cord 16 is operated in the direction of the arrow A shown in FIG. 2, for example, only the second drive shaft 12 is rotated and the second winding shaft 10 is wound on the second lifting / lowering cord 7. It is rotated in the taking direction.

  When the operation cord 16 is operated in the direction of arrow B shown in FIG. 2, only the first drive shaft 11 is rotated, and the first winding shaft 9 is rotated in the winding direction of the first lifting / lowering cord 6. The

  The first and second drive shafts 11 and 12 are inserted through a stopper device 24 in the head box 1. The stopper device 24 has a known function for preventing the weight of the intermediate rail 3 and the bottom rail 5 from dropping when the operation cord 16 is released after the intermediate rail 3 or the bottom rail 5 is lifted. Governor devices 36 and 37 are arranged on the side of the stopper device 24. Details of the governors 36 and 37 will be described later.

  At the other end of the head box 1, there is a lower limit device 38 that sets the maximum rewind amount of the second lifting / lowering cord 7 from the second winding shaft 10 and sets the lower limit position of the bottom rail 5. It is arranged. Similarly, a lower limit device for setting the lower limit position of the intermediate rail 3 is also provided in parallel.

  As shown in FIG. 2, a pitch holding cord 39 is disposed on the back side of the upper screen 2 and the lower screen 4 at the insertion positions of the first and second lifting cords 6 and 7. The pitch holding code 39 operates so as to make the pitch of the folds of the upper screen 2 and the lower screen 4 constant.

  The operation of the pleated screen configured as described above will be described. When the ball chain 16 is pulled down in the direction of arrow A, only the second drive shaft 12 is rotated, the second lifting / lowering cord 7 is wound around the second winding shaft 10, and the bottom rail 5 is pulled up. When the operation cord 16 is released after the bottom rail 5 is pulled up to a desired height, the bottom rail 5 is held at the desired height by the self-weight drop prevention operation of the stopper device 24.

  From this state, if the operation cord 16 is pulled in the direction of arrow A and then released, the operation of preventing the weight of the stopper device 24 from falling is released, and the bottom rail 5 is lowered by its own weight.

  When the operation cord 16 is pulled down in the direction of arrow B, only the first drive shaft 11 is rotated, the first lifting / lowering cord 6 is wound around the first winding shaft 9, and the intermediate rail 3 is pulled up. When the operation cord 16 is released after the intermediate rail 3 is pulled up to the desired height, the intermediate rail 3 is held at the desired height by the self-weight drop prevention operation of the stopper device 24.

  From this state, when the operation cord 16 is pulled in the direction of the arrow B and then released, the operation for preventing the weight reduction of the stopper device 24 is released, and the intermediate rail 3 is lowered by its own weight.

  As shown in FIG. 3, governor devices 36 and 37 are arranged on the side of the stopper device 24, and each of the governor devices 36 and 37 is fixed in the head box 1 by a fixing member 40. FIG. 4 is a perspective view schematically showing the governor devices 36 and 37 and the fixing member 40 in the shielding device according to the embodiment of the present invention. FIG. 5 is a perspective view schematically showing the governor devices 36 and 37 and the fixing member 40 in the shielding device according to the embodiment of the present invention.

  As shown in FIGS. 4 and 5, the governor device 36 suppresses the rotation speed of the first drive shaft 11 to a predetermined value or less via the connecting member 50 without stopping the rotation of the first drive shaft 11. Thus, the lowering speed when the intermediate rail 3 is lowered by its own weight is suppressed. Further, the governor device 37 suppresses the rotation speed of the second drive shaft 12 to a predetermined value or less via the connecting member 50 without stopping the rotation of the second drive shaft 12, and lowers the weight of the bottom rail 5 by its own weight. Slow down the hour. Each of the governor devices 36 and 37 can be adapted to various types of headboxes 1 having various shapes, each of which has the same shape, has a hydraulic braking mechanism, and its main body is substantially cylindrical ( In this example, it has housings 361 and 371 (substantially cylindrical). For each of the governor devices 36 and 37, the fixing member 40 for fixing the substantially cylindrical housings 361 and 371 is configured in a shape that is individually adapted to the head box 1 having various shapes, as will be described later. These components are common to the head box 1 having various shapes.

  As shown in FIG. 5, the first and second drive shafts 11 and 12 are inserted through the connecting member 50. The connecting member 50 has an inner peripheral surface shape that engages with the hexagonal shape of the first and second drive shafts 11 and 12 so as to be rotatable with the rotation of the first and second drive shafts 11 and 12. Furthermore, in the state where it is simply inserted, it can move on the first and second drive shafts 11 and 12. Further, the connecting member 50 is engaged with an engagement receiving portion (only the engagement receiving portion 372b of the central shaft 372 is shown) engaged with the inner peripheral surface shape of the substantially cylindrical central shafts 362 and 372 in the governor devices 36 and 37. The engaging part 50a to be joined is formed, and in this example, it is formed in a hexagonal shape. Therefore, when the connecting member 50 is engaged with the substantially cylindrical central shafts 362 and 372 in the governor devices 36 and 37, the rotation of the first and second drive shafts 11 and 12 is the central shafts 362 and 372, respectively. However, when the connecting member 50 is not engaged with the central shafts 362 and 372, the rotations of the first and second drive shafts 11 and 12 cannot be transmitted to the central shafts 362 and 372, respectively. It is said. As will be described later, the use of the connecting member 50 together with the use of the fixing member 40 improves the installation of the governor devices 36 and 37 with high accuracy and the assemblability of the shielding device.

  The body portions of the governors 36 and 37 are formed by substantially cylindrical (substantially cylindrical in the illustrated example) housings 361 and 371, and their distal end portions 363 and 373 are slightly larger in diameter than the housings 361 and 371. It has a substantially cylindrical shape. The housings 361 and 371 are formed with convex first protrusions 364 and 374 and rib-shaped second protrusions 365 and 375 provided at two locations.

  On the other hand, each of the fixing members 40 that can be used in common with the governor devices 36 and 37 is disposed in the opposite direction for one of the governor devices 36 and 37, respectively. For example, the fixing member 40 that fixes the governor device 37 is formed with an accommodation portion 401 through which the distal end portion 373 of the governor device 37 abuts at one side and the housing 371 is inserted inside the fixing member 40. Therefore, each of the pair of governors 36 and 37 is configured as a speed regulator that performs a braking operation in one direction, and each of the first protrusions 364 and 374 of the pair of speed regulators intersects the fixing member 40. It is configured so that it can be arranged and held.

  In particular, the fixing member 40 is configured to hold the housings 361 and 371 in a non-rotatable manner in a direction in which the first protrusions 364 and 374 are substantially perpendicular to the opening / closing direction of the shielding material (that is, the front-rear direction). For this reason, it is possible to fix the headbox 1 in a manner that enhances the housing efficiency when it is installed in the headbox 1. The length of the fixing member 40 is shorter than the entire length of the housings 361 and 371, and the lengths of the first protrusions 364 and 374 and the second protrusions 365 and 375 are shorter than the length of the fixing member 40. The regulator (for example, the governor device 36) is not disturbed when the other speed regulator (for example, the governor device 37) is provided in the opposite direction, and both of the pair of speed regulators are more closely connected. Can be fixed.

  The accommodating portion 401 includes a first engagement receiving portion 402 that engages with the convex first projection portions 364 and 374 and a rib-like second projection portion 365 and 375 provided at two locations. Two engagement receiving portions 403 are formed. Thus, on the outer surfaces of the housings 361 and 371, the first protrusions 364 and 374 and the second protrusions provided on the peripheral surface opposite to the first protrusions 364 and 374 in the diameter direction with respect to the shaft core. Since the portions 365 and 375 are provided, the fixing member 40 holds the housings 361 and 371 in a non-rotatable manner by the first protrusions 364 and 374 and the second protrusions 365 and 375.

  The fixing member 40 is configured in an annular shape having elasticity in the direction in which the ring expands, and the fixing member 40 is locked at a position where the tip end portion 373 of the governor device 37 abuts on one side portion of the fixing member 40. A claw portion 404 is formed in the accommodating portion 401 through which the governor device 37 can be inserted. The claw portion 404 is fitted to a part of the convex first protrusion 374 so that once the governor device 37 is attached to the fixing member 40, it cannot be easily removed. Thereby, the fixing member 40 can fix the housings 361 and 371 of the governor devices 36 and 37 so as not to move in the axial direction. Under the fixing member 40, leg portions 405 for stably disposing on the bottom surface in the head box 1 are provided at three locations. Accordingly, the governor devices 36 and 37 are mounted so as not to rotate with respect to the fixing member 40, and the governor devices 36 and 37 and the respective fixing members 40 can be integrally disposed on the bottom surface in the head box 1. In this integrated state, the head box 1 can be moved in the left-right direction when adjusting the arrangement.

  Hereinafter, as a representative, the governor device 37 for connecting the drive shaft 12 via the connecting member 50 and the fixing member 40 will be described in detail.

(Governor device)
FIGS. 6A, 6B, 6C, and 6D are diagrams showing an outline of the governor device 37 in the shielding device according to the embodiment of the present invention. 6A is a plan view of the governor device 37, FIG. 6B is a left side view of the governor device 37, FIG. 6C is a front view of the governor device 37, and FIG. ) Is a right side view of the governor device 37.

  The governor device 37 illustrated here is configured as a speed adjuster that adjusts the speed associated with the opening and closing of the shielding material by a hydraulic braking mechanism, and is mainly inserted into the substantially cylindrical housing 371 and the housing 37. A substantially cylindrical central shaft 372 and a substantially disk-shaped moving member 377 that is accommodated in the housing 37 and can move along the central shaft 372 as the central shaft 372 rotates. The distal end portion 373 of the housing 371 has a substantially cylindrical shape that is slightly larger in diameter than the housing 371. The housing 371 is formed with a convex first protrusion 374 and rib-shaped second protrusions 375 provided at two locations.

  Further, the housing 371 is configured to be transparent or translucent so that the position of the moving member 377 accommodated in the housing 371 can be visually recognized from the outside. It corresponds to the distance. A determination reference portion (mark) 371 d capable of comparing the position of the moving member 377 and the adjustment reference position of the bottom rail 5 is provided on the housing 371. The adjustment reference position of the bottom rail 5 is set to a state in which the first and second winding shafts 9 and 10 have been wound for several rotations, avoiding the physical limit lower limit position. This is because if the bottom rail 5 is configured to reach the physical limit lower limit position (assuming that there is no “extra winding”, which will be described later), the actual movement of the shielding material will cause unstable movement. is there. For this reason, it is desirable to adjust the lower limit position of the bottom rail 5 with high accuracy. However, in this example, since the determination reference portion (mark) 371d is provided, the lower limit position of the bottom rail 5 is adjusted with high accuracy. Is also possible.

  Further, the engagement receiving portion 372b of the central shaft 372 is formed to engage with the engagement portion 50a of the connecting member 50, and is formed in a hexagonal shape in this example. FIGS. 7A, 7B, 7C, and 7D are diagrams for explaining the states before and after the connection with respect to the connection between the governor device 37 and the connection member 50. FIGS. These are plan views before and after connection, respectively, and FIGS. 7A and 7C are cross-sectional views taken along lines AA ′ and BB ′ before and after connection, respectively. At the distal end of the central shaft 372, claw portions 372c are provided at two locations. When the connecting member 50 is inserted into the substantially cylindrical central shaft 372, the flange 50b on the proximal end side of the connecting member 50 is It is locked to the claw portion 372c so that it cannot be easily removed.

  Moreover, the connection member 50 has the engaging part 50a engaged with the engagement receiving part 372b of the substantially cylindrical center axis | shaft 372 in the governor apparatus 37, and is formed in a hexagonal shape in this example. Therefore, for example, when the connecting member 50 is engaged with the substantially cylindrical central shaft 372 in the governor device 37, the rotation of the second drive shaft 12 can be transmitted to the central shaft 372. When 50 is not engaged with the central shaft 372, the rotation of the drive shaft 12 cannot be transmitted to the central shaft 372. Thus, the central shaft 372 has a shape that can penetrate the second drive shaft 12 without contact. A connecting member 50 configured to be able to select transmission / non-transmission of rotation of the second drive shaft 12 with respect to the central shaft 372 is provided on the second drive shaft 12. The connecting member is attached to the central shaft 372 so that the rotation of the second drive shaft 12 is transmitted to the central shaft 372.

  Here, the operation of the governor device 37 will be described in detail. FIGS. 8A, 8B, 8C, and 8D are diagrams for explaining the operation of the governor device 37. FIG. 8A is a diagram at the start of the blind descent (for example, the bottom of the bottom rail 5). FIG. 8B is a state diagram immediately before the completion of blind descent (for example, immediately before the lowest position of the bottom rail 5), and FIG. 8C. These are figures which show the relationship between the bottom height position (for example, height position of the bottom rail 5) of a blind, and the load added to the center axis | shaft 372, FIG.8 (d) is a bottom height position (for example, blind). FIG. 6 is a diagram showing the relationship between the height position of the bottom rail 5 and the braking force applied to the central shaft 372.

  As shown in FIGS. 8A and 8B, a gap 379 is provided between the inner surface 371 a of the housing 371 of the governor device 37 and the moving member 377. The accommodation space 378 in the housing 37 is filled with oil. The moving member 377 is screwed to the central shaft 372 and is configured to be relatively slidable relative to the housing 371 and not to be relatively rotatable. For example, in the example in which the inner circumference of the inner surface 371a is a circle, a concave line is provided on the edge of the inner surface 371a, and the outer circumference of the cross section of the axis orthogonal surface of the moving member 377 is a circle with a gap 379 from the inner surface 371a. A convex portion may be provided on the circular edge, and the concave portion of the circular edge of the inner surface 371a may be configured to engage with the convex portion of the circular edge of the moving member 377. Other forms in which the moving member 377 and the housing 371 are relatively movable in the axial direction and are not relatively rotatable include a rectangular shape and an oval shape on the inner surface 371a of the moving member 377 and the housing 371.

  With such a configuration, the moving member 377 slides with the rotation of the central shaft 372. Specifically, the moving member 377 moves in the arrow X direction by the rotation in the arrow A direction in FIG. When the moving member 377 moves, the oil in the accommodation space 378 moves from the front (traveling direction) side of the moving member 377 through the gap 379 to the rear side. The resistance received by the oil at this time is the oil flow resistance. The narrower the gap 379 and the higher the viscosity of the oil, the greater the oil flow resistance. As the oil flow resistance increases, the resistance force that the moving member 377 receives from the oil increases, and thereby the braking force applied to the central shaft 372 increases. Therefore, when the inner surface 371a is tapered as shown in the drawing, as shown in FIGS. 8C and 8D, as the bottom rail 5 is lowered, the load applied to the central shaft 372 is reduced and the braking force is also reduced. To do. Further, the brake force applied to the central shaft 372 by the governor device 37 can be easily adjusted by appropriately changing the size of the gap 379 and the viscosity of the oil.

  For example, in a state in which the lower screen 4 is folded, almost the entire weight of the lower screen 4 and the bottom rail 5 is supported by the second lifting / lowering cord 7, so that the load applied to the second lifting / lowering cord 7 is large. Since the lower screen 4 is suspended and supported by the head box 1, the load applied to the second lifting / lowering cord 7 decreases as the bottom rail 5 descends and the lower screen 4 is expanded. Therefore, the relationship between the height position of the bottom rail 5 and the load applied to the second lifting / lowering cord 7 is as shown in FIG. Since the bottom rail 5 tends to descend at a higher speed as the load applied to the second lifting / lowering cord 7 is larger, when the bottom rail 5 is lowered from a higher position, the lowering speed of the bottom rail 5 is not excessively increased. As shown in FIG. 8D, the governor device 37 is configured such that the braking force increases as the bottom rail 5 is at a higher position.

  In order to realize such characteristics, the inner surface 371a of the housing 371 of the governor device 37 is tapered as shown in FIGS. 8A and 8B, and as the moving member 377 moves in the arrow X direction. As the gap 379 gradually increases, the oil flow resistance gradually decreases. With such a configuration, the height position of the bottom rail 5 and the braking force by the governor device 37 have the relationship shown in FIG. 8D, and the lowering speed of the bottom rail 5 can be prevented from becoming excessively large. Further, the brake force by the governor device 37 can be made very small immediately before the bottom rail 5 is lowered, so that the problem that the bottom rail 5 does not drop to the lower limit position is prevented, and the bottom rail 5 is lowered. The lifting / lowering cord 7 can be rewound to the lowest limit without stopping immediately before completion. This is because the minimum brake force in an allowable range in which the bottom rail 5 does not stop to the lowest limit and the rewinding cord 7 can be rewound is determined by a wide gap 379 and viscosity, and at that position near the upper limit of the blind height. This can be realized by setting a narrow gap 379 so that the descending speed of the blind is equal to or lower than a predetermined speed.

  Accordingly, even when the shielding material has any weight or specific gravity or shielding material having any width / height ratio, the bottom rail 5 can be lowered to the lowest limit without stopping immediately before completion of the descent by appropriately determining the oil viscosity and the gap 379. . Note that the inclination direction of the graph of FIG. 8D needs to correspond to the graph of FIG. 8C, but the inclination angle of the graph of FIG. However, if the braking force is within an allowable range in which the bottom rail 5 can rewind the lifting / lowering cord 7 without stopping the bottom rail 5 from the lowering start position to the lowest limit while receiving the sliding resistance of all rotating parts, Strict identity with the graph of FIG. 8C is not required. Further, the relationship between the height position of the bottom rail 5 and the braking force by the governor device 37 may not be a linear relationship as shown in FIG. 8D, but may be a relationship represented by a curve or a broken line. The relationship between the height position and the braking force can be easily changed by changing the inner surface shape of the housing 37.

  When the bottom rail 5 is raised from the state shown in FIG. 8B, the moving member 377 can be moved to the state shown in FIG. When the bottom rail 5 reaches the upper limit position, the moving member 377 moves to the position shown in FIG.

  Here, an example has been described in which the moving member 377 moves from the substantially left end to the substantially right end of the housing space 378 of the housing 371. However, the moving member 377 reaches the substantially left end or the substantially right end of the housing space 378. You don't have to. Further, when the common governor device 37 is used for a plurality of types of pleated screens having different lengths of the lifting / lowering cord 7, the position of the moving member 377 when the bottom rail 5 is at the lower limit position is aligned. It is preferable to do. This is because it is important to appropriately define the braking force immediately before the bottom rail 5 is lowered.

  The governor devices 36 and 37 exemplified above can be applied not only to the pleated screen but also to a solar radiation shielding device (for example, a horizontal blind, a raising curtain) that lowers the weight of the shielding material. In this case, in the solar radiation shielding device, the torque applied to the central shaft 372 decreases as the rewinding is performed. Further, the present invention can also be applied to a case where control is performed so that the winding speed is not excessive with respect to a blind using an automatic winding mechanism using a stored force such as a spring. In this case, the position is adjusted so as to generate a braking force suitable for each position (torque gap) between the biasing force of a spring or the like and the blind load. In addition, it is possible to automate either one of the opening and closing directions by a stored energy such as springs and weights in partitions such as solar shading devices such as horizontal vertical brides, curtain rails, panel screens, pleated screen doors and accordion curtains. Alternatively, it can be applied to a shielding device that is self-opening. In this case as well, the inclination of the damper torque may be approximated in accordance with the inclination of the torque gap. In addition, the governor devices 36 and 37 can be configured to have a one-way function (a damper torque is not generated or significantly reduced for rotation to a side where speed control is not performed).

(Fixing member of Example 1)
Next, the details of the fixing member 40 according to the first embodiment, in which the governor devices 36 and 37 described above are fixed and can be accommodated in the head box 1, will be described. FIGS. 9A, 9B, and 9C are views showing details of the fixing member 40 of Example 1 in the shielding device of one embodiment, and FIG. 9A is a plan view thereof, FIG. (B) is a side view, FIG.9 (c) is a front view. 10 (a), (b), (c), and (d) are explanatory views showing details of the fixing member 40 of Example 1 in the shielding device of one embodiment, and FIG. FIG. 10B is a perspective view when integrated with the governor device 36, FIG. 10C is a side view when integrated with the governor device 36, and FIG. d) is a side view of the governor device 36 attached to the fixing member 40.

  The fixing member 40 that can be commonly used for the governor devices 36 and 37 has the tip portions 363 and 373 of the governor devices 36 and 37 abutted on one side thereof, and the housings 361 and 371 on the inner side thereof. A receiving portion 401 to be inserted is formed. The accommodating portion 401 includes a first engagement receiving portion 402 that engages with the convex first protrusions 364 and 374 of the governor devices 36 and 37, and rib-like shapes provided at two locations of the governor devices 36 and 37. A second engagement receiving portion 403 that engages with the second protrusions 365 and 375 is formed.

  In addition, the fixing member 40 has a claw portion 404 for locking the tip portions 363 and 373 of the governor devices 36 and 37 at a position where they abut against one side portion of the fixing member 40. It is formed in the accommodating part 401. Since the claw portion 404 is fitted to a part of the convex first protrusions 364 and 374, once the governor devices 36 and 37 are attached to the fixing member 40, they cannot be easily removed. ing. Under the fixing member 40, leg portions 405 for stably disposing on the bottom surface in the head box 1 are provided at three locations. Accordingly, the governor devices 36 and 37 are mounted so as not to rotate with respect to the fixing member 40, and the governor devices 36 and 37 and the respective fixing members 40 can be integrally disposed on the bottom surface in the head box 1. In this integrated state, the head box 1 can be moved in the left-right direction when adjusting the arrangement.

(Fixing member of Example 2)
Next, the details of the fixing member 40 of the second embodiment that fixes the above-described governor devices 36 and 37 and can be accommodated in the head box 1 will be described. The second embodiment is an example in which one or both of the governor devices 36 and 37 can be attached and integrated with one fixing member 40. 11 (a), 11 (b), and 11 (c) are diagrams showing details of the fixing member 40 of Example 2 in the shielding device according to the embodiment, and FIG. 11 (a) is a plan view thereof, FIG. (B) is a side view, FIG.11 (c) is a front view. FIGS. 12A, 12B, 12C, and 12D are explanatory views showing details of the fixing member 40 of Example 2 in the shielding device of the embodiment, and FIG. 12 (b) is a perspective view when integrated with the governor device 36, and FIG. 12 (c) is a perspective view when integrated with the governor devices 36, 37. 12 (d) is a side view when integrated with the governor device 36, and FIG. 12 (e) is a side view of the governor device 36 attached to the fixing member 40 of the second embodiment. Similar components are denoted by the same reference numerals.

  Further, the governor devices 36 and 37 shown in FIG. 12 are illustrated as being shorter than the governor devices 36 and 37 illustrated in FIG. 10, and the first protrusions 364 and 374 are also configured to be shorter. However, the fixing member 40 of the second embodiment may be configured to be applicable to the governor devices 36 and 37 illustrated in FIG.

  The fixing member 40 of the second embodiment that can be attached to both the governor devices 36 and 37 has the tip portions 363 and 373 of the governor devices 36 and 37 abutted on one side thereof and the housing on the inner side thereof. A receiving portion 401 through which 361 and 371 are inserted is formed adjacently. Each accommodating portion 401 has a first engagement receiving portion 402 that engages with the convex first protrusions 364 and 374 of the governor devices 36 and 37, and a rib shape provided at one location of the governor devices 36 and 37. A second engagement receiving portion 403 that engages with the second protrusions 365 and 375 is formed.

  Further, the fixing member 40 of the second embodiment includes a claw portion 404 for locking the tip portions 363 and 373 of the governor devices 36 and 37 at a position where they abut against one side of the fixing member 40. 37 is formed in a housing portion 401 through which 37 can be inserted. Since the claw portion 404 is fitted to a part of the convex first protrusions 364 and 374, once the governor devices 36 and 37 are attached to the fixing member 40, they cannot be easily removed. ing. Under the fixing member 40, leg portions 405 for stably disposing on the bottom surface in the head box 1 are provided at four locations. Therefore, the governor devices 36 and 37 are non-rotatably attached to the fixing member 40 of the second embodiment, and the governor devices 36 and 37 and the one fixing member 40 are integrated with each other in the head box 1. It can be arranged on the bottom surface, and in this integrated state, it can be moved in the left-right direction in the head box 1 during arrangement adjustment.

  As described above, in the shielding device according to the present invention, the main body portions of the governor devices 36 and 37 are the substantially cylindrical housings 361 and 371. In particular, in order to simplify the components of the governor devices 36 and 37, the governor devices 36 and 37 are configured as speed regulators that constitute a hydraulic braking mechanism. For such hydraulic governors 36 and 37, a fixing member 40 for fixing the substantially cylindrical housings 361 and 371 is used. By adapting the fixing member 40 to the head box 1 having various shapes, the governor devices 36 and 37 can be adapted to various types of shielding devices, and the assembly workability can be improved while improving the accommodation efficiency. it can.

  Further, the first and second drive shafts 11 and 12 by the first and second winding shafts 9 and 10 for the governor devices 36 and 37 that are integrated using the fixing member 40 of the first and second embodiments. The direction of rotation is, for example, side winding (inward winding) as shown in FIG. 13 (a), or center winding (outward winding) as shown in FIG. 13 (b), for example. It can be set as the form according to the structure of the shielding apparatus. In this case, the governor devices 36 and 37 perform a braking operation in one direction (the reverse rotation has a weak positive power) and can be inserted from both the left and right sides of the fixing member 40 and can be held in both directions.

(Assembly procedure)
Next, referring to FIG. 14, an assembly procedure when the governor devices 36 and 37 are assembled to the shielding device using the fixing member 40 will be described.

  First, the governor devices 36 and 37 are attached to the fixing member 40 and integrated (step S1). At this time, as described above, the governor devices 36 and 37 may be fixed by one fixing member 40, or both the governor devices 36 and 37 may be fixed by one fixing member 40. Hereinafter, an example in which one governor device 37 is integrated by one fixing member 40 will be described.

  Next, the governor device 37 integrated with the fixing member 40 is included in the head box 1 of the embodiment, and various device members are installed (step S2).

  Next, the second drive shaft 12 is inserted and installed in various device members installed in the head box 1 of one embodiment (step S3). However, in this state, the second drive shaft 12 is not connected to the central shaft 372 of the governor device 37 integrated by the fixing member 40 and freely rotates. That is, the connecting member 50 a is movably inserted through the second drive shaft 12, but the connecting member 50 is not engaged with the central shaft 372.

  Next, on the housing 371 of the governor device 37, a determination reference portion (mark) 371d capable of comparing the position of the moving member 377 and the adjustment reference position (for example, the lowest limit position) of the bottom rail 5 is provided. , The position of the moving member 377 is adjusted to the position matched with the determination reference portion (mark) 371d on the central axis 372 of the governor device 37, and in this state, the bottom rail to which the shielding material is attached 5 is adjusted and determined (step S4). At this time, the second drive shaft 12 can rotate without the position of the moving member 377 relative to the central shaft 372 of the governor device 37 changing.

  Next, in order to fix the position of the moving member 377 with respect to the central axis 372 of the governor device 37 in a state where the lowest limit position of the bottom rail 5 to which the shielding material is attached is determined, the connecting member 50a is engaged with the central axis 372. (Step S5). More specifically, the second elevating cord 7 when the bottom rail 5 is lowered to the lowest limit in the state where the second drive shaft 12 is not connected to the central shaft 372 and freely rotates, The length is set to a state of “with extra winding” for several rotations (for example, about 2.5 rotations) with respect to the second winding shaft 10. On the other hand, by using the determination reference portion (mark) 371 d that can compare the position of the moving member 377 and the adjustment reference position (for example, the lowest limit position) of the bottom rail 5, The position is matched with the position matched with the determination reference part (mark) 371d on the central axis 372 of the governor device 37. Thereafter, the position of the moving member 377 with respect to the central axis 372 of the governor device 37 is fixed by engaging the connecting member 50a with the central axis 372 in a state where the lowest limit position of the bottom rail 5 to which the shielding material is attached is determined. .

  In this “with extra winding” state, the second lifting / lowering cord 7 is evenly wound over the entire length of the second winding shaft 10. By setting this “with extra winding”, when the second lifting / lowering cord 7 is wound up until the bottom rail 5 reaches the uppermost position from the lowermost limit, or until the bottom rail 5 reaches the lowermost limit from the uppermost position. When the lifting / lowering cord 7 is rewound, a sufficient rotational force is applied to the second winding shaft 10 based on the weight of the shielding material and the bottom rail 5. In other words, if the bottom rail 5 (shielding material lower limit) is configured so that all the lifting / lowering cords are rewound at the physical limit lower limit position (assuming “no extra winding” state), the number of rotations when descending Rotational torque to the second winding shaft 10 due to the tension of the second lifting / lowering cord 7 in rewinding for a minute (for example, about 2.5 rotations) cannot be sufficiently obtained, and the shielding material is lowered to a predetermined extended state. This is not preferable.

  Thereby, the adjustment of the braking force characteristic by the governor device 37 can be easily realized with high accuracy. That is, when the second elevating cord 7 is spirally wound around the second take-up shaft 10 until the predetermined extension state of the shielding material corresponding to the minimum braking force is reliably lowered and the upper limit of the bottom rail 5 is reached. The moving member 377 in the governor device 37 can be raised so that the desired braking force characteristic (see FIG. 8D) corresponds to the load on the central shaft 377 (see FIG. 8C). Can fit well. In particular, since the governor device 37 is integrated using the fixing member 40, the “with extra winding” state can be stabilized, and high-precision alignment can be easily performed.

  In addition, the governor device 37 integrated with the fixing member 40 in a state where the connecting member 50 is not engaged with the central shaft 372 is inserted, and the second drive shaft 12 is inserted through various device members. Then, it is good also as a procedure which installs various apparatus members with respect to the head box 1 after that.

  As described above, in the shielding device according to the embodiment of the present invention, the governor devices 36 and 37 having the substantially cylindrical housing 371 that can be adapted to various types of shielding devices are provided. The governor devices 36 and 37 constitute a hydraulic braking mechanism instead of constituting a braking mechanism using centrifugal force. Thereby, the components of the governor devices 36 and 37 can be simplified, and the operation reliability of the device can be improved and the cost can be reduced.

  And since the fixing member 40 which fixes the substantially cylindrical housings 361 and 371 is used with respect to the hydraulic governors 36 and 37 having such a configuration, the fixing member 40 is used as the head box 1 having various shapes. By adapting, the governor devices 36 and 37 can be adapted to various kinds of shielding devices, and are configured so as to be integrated by utilizing the shapes of the substantially cylindrical housings 361 and 371. Efficiency can be increased.

  For example, FIGS. 15A to 15J are side views of various head boxes 1 in a shielding device to which the governor devices 36 and 37 can be applied. 15A to 15E show examples of the governor devices 36 and 37 having long first protrusions 364 and 374, and FIGS. 15F to 15J show the first protrusions 364 and 374. Are examples of the short governor devices 36 and 37.

  FIG. 15A is an example in which one governor device 36 is integrated by the fixing member 40 of the first embodiment and installed in the head box 1 having an upper opening. FIG. 15B is an example in which the two governor devices 36 and 37 are integrated using the two fixing members 40 of the first embodiment and installed in the head box 1 having the upper opening. FIG. 15C is an example in which two fixing members 40 of the first embodiment are used and the governor devices 36 and 37 are integrated and installed in the head box 1 having a lower opening. FIGS. 15D and 15E show an example in which the governor devices 36 and 37 having long first protrusions 364 and 374 are directly installed in the head box 1 having a lower opening.

  FIG. 15F is an example in which one governor device 36 is integrated by the fixing member 40 of the second embodiment and installed in the head box 1 having an upper opening. FIG. 15G shows an example in which the two governor devices 36 and 37 are integrated and installed in the head box 1 having the upper opening by using the fixing member 40 of the second embodiment. FIG. 15H is an example in which the two governor devices 36 and 37 are integrated using the fixing member 40 of the second embodiment and installed in the head box 1 having a lower opening. 15 (i) and 15 (j) are examples in which the governor devices 36 and 37 having short first protrusions 364 and 374 are directly installed in the head box 1 having the lower opening.

  As described above, the governor devices 36 and 37 can be adapted to various kinds of shielding devices by using the fixing member 40 of the first and second embodiments, and the shapes of the substantially cylindrical housings 361 and 371 are utilized. Thus, it is possible to install the headbox 1 in an integrated manner with improved storage efficiency.

  Further, the fixing member 40 integrated with the hydraulic governor devices 36 and 37 is in the integrated state in the housing (the head box 1 in this example) to be installed in the first and second. Since the drive shafts 11 and 12 can be moved in the axial direction, the assembly workability can be improved. In particular, when the fixing member 40 is formed of a resin material having elasticity, for example, the fixing member 40 can be inserted not only from the side of the head box 1 but also from the top thereof. It can be applied to a shielding device, and can be flexible as a mounting method.

  The present invention has been described above with reference to specific embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the technical concept thereof. For example, the engaging means for integrating the hydraulic governors 36 and 37 and the fixing member 40 has been described by taking a specific shape as an example, but other shapes can be used as long as they produce the same action and effect. It can also be.

  Moreover, although the specific example was demonstrated with respect to the hydraulic governors 36 and 37 and the fixing member 40, the same effect | action and effect are produced in the shape of the further modification based on the Example mentioned above. Any other shape can be used.

  The shielding device according to the embodiment of the present invention is configured to use an integrated fixing member for a hydraulic governor device having a substantially cylindrical housing that can be adapted to various types of shielding devices. Therefore, the operation reliability of the apparatus can be improved, the cost can be reduced, and the assemblability can be improved. Therefore, the apparatus is useful for the use of a shielding apparatus using a hydraulic governor apparatus.

DESCRIPTION OF SYMBOLS 11 1st drive shaft 12 2nd drive shaft 36,37 Governor apparatus 40 Fixing member 50 Connection member 50a Engagement part 50b Flange part 361,371 Housing 362,372 Center axis 364,374 First protrusion part 365,375 First 2 Protruding part 371d Judgment reference part (mark)
372 Central shaft 372b Engagement receiving part 372c Claw part 377 Moving member 401 Storage part 402 First engagement receiving part 403 Second engagement receiving part 404 Claw part 405 Leg part

Claims (12)

A shielding device that opens and closes a shielding material by rotation of a predetermined drive shaft,
A speed regulator that adjusts a speed associated with opening and closing of the shielding material by a hydraulic braking mechanism;
A fixing member for fixing the speed regulator in a predetermined housing;
The shielding member is configured to suppress relative rotation of the housing of the speed regulator with respect to the casing and to be integrally attached to the housing of the speed regulator. . The housing of the speed regulator is filled with oil, and a central shaft that is rotatable with the rotation of the drive shaft is inserted therein, and the movement that is movable along the central axis with the rotation of the central shaft. A member is provided, and the speed regulator is configured to have the hydraulic braking mechanism by causing a state in which the flow resistance of the oil is variable by movement of the moving member;
The shielding device according to claim 1, wherein the fixing member is configured to suppress rotation of the housing accompanying rotation of the central axis. The central axis has a shape capable of penetrating the drive shaft without contact,
A connecting member configured to be able to select transmission / non-transmission of rotation of the driving shaft with respect to the central shaft is provided on the driving shaft, and the connecting member is attached to the central shaft, thereby driving the driving The shielding device according to claim 2, wherein the rotation of the shaft is transmitted to the central shaft.   The fixed member is installed so as to be movable in the axial direction of the drive shaft in the housing in a state of being integrally attached to the housing of the speed regulator. The shielding apparatus as described in any one of 1-3. The speed regulator has a substantially cylindrical housing.
The shielding according to any one of claims 1 to 4, wherein the fixing member is configured to be integrally attached to one or two housings of the speed regulator. apparatus.   A protrusion is provided on the outer surface of the housing, and the fixing member is configured to hold the housing in a non-rotatable manner so that the protrusion is substantially perpendicular to the opening / closing direction of the shielding material. The shielding device according to claim 5, wherein: The speed regulator is configured as a pair of speed regulators that perform braking operation in one direction,
The shielding device according to any one of claims 1 to 6, wherein the fixing member is configured to be able to hold the pair of speed regulators by inserting them in opposite directions. The speed regulator is configured as a pair of speed regulators that perform braking operation in one direction,
The shielding device according to claim 6 or 7, wherein the fixing member is configured to be arranged and held so that the protrusions of the pair of speed regulators intersect each other.   9. The shielding device according to claim 6, wherein a length of the fixing member is shorter than an entire length of the housing, and a length of the protruding portion is shorter than a length of the fixing member.   On the outer surface of the housing, there is provided a second protrusion provided on a circumferential surface opposite to the protrusion in the diameter direction with respect to the shaft core, and the fixing member includes the protrusion and the second protrusion. The shielding device according to claim 6, wherein the shielding device is configured to hold the housing in a non-rotatable state.   The shielding device according to any one of claims 1 to 10, wherein the fixing member includes an engaging portion that is integrally attached to the housing.   The said fixing member is comprised by the cyclic | annular form which has elasticity in the direction where a ring expands, The said engaging part consists of a nail | claw part which fixes the said housing so that a movement in an axial direction is impossible. Shielding device.