JP2012011055A - Blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform different operations shielding materials with one operation code, and to reduce the size of an operation device with a fewer number of components in a blind having two shielding materials.SOLUTION: The blind includes: an operation shaft 46 which rotates by transmitting the operation force; an oscillation member 48 which can oscillate in the rotation direction of the operation shaft 46 following the rotation of the operation shaft 46; an intermediate member 52 which is rotatably supported by the oscillation member 48, to which the rotation of the operation shaft 46 is transmitted; and first and second transmission members 56, 58 which are arranged so as to be engaged with the intermediate member 52 on an oscillation trajectory of the oscillation member 48, respectively. The first transmission member 56 and the second transmission member 58 can transmit the rotation to the first drive shaft 26 and to the second drive shaft 36, respectively. The intermediate member 52 is engaged with one of the first and second transmission members 56, 58 in the oscillation direction of the oscillation member 48 which switches according to the rotation direction of the operation shaft 46. The rotation of the operation shaft 46 is transmitted to one of the first and second drive shafts 26, 36.

Description

  The present invention relates to a blind in which different operations can be performed by operating one operation code in a blind having two shielding materials.

  Conventionally, what is shown by patent document 1 is known as this kind of blind. In this blind, the first and second elevating operation parts, the first and second states enabling the first and second solar shading materials to be prevented from falling by their own weight and from allowing their own weight to drop are selectable. By operating the stopper unit and one of the operation cords, the first elevating operation unit and the first stopper unit are operated, and the first solar shading material is lifted without raising and lowering the second solar shading material. A first clutch unit that can select a descent operation due to its own weight and a self-weight descent prevention operation, and the second lifting operation unit and the second stopper unit by operating the other of the operation cord. A second clutch unit capable of selecting a lifting operation of the second solar shading material, a lowering operation due to its own weight, and a self-weight lowering preventing operation without raising and lowering the first solar shading material.

  The first and second clutch units are arranged in the head box in the front-rear direction, and a driving force is transmitted to the first and second clutch units from driving gears arranged below them.

  When pulling up the first solar shading material, an operation of pulling down an operation cord hanging down indoors is performed. As a result, when the first solar shading material is pulled up and the operation cord is released after the first solar shading material is pulled up to a desired position, the weight drop is prevented and the first solar shading material is desired. Suspended and supported in position. When the first solar shading material is lowered, the first solar shading material is lowered by its own weight when the operation cord hanging down indoors is pulled slightly downward.

  Moreover, when pulling up the second solar shading material, an operation of pulling an operation cord hanging downward to the outdoor side is performed. As a result, when the second solar shading material is pulled up and the operation cord is released after the second solar shading material is lifted to a desired position, the weight drop is prevented and the second solar shading material is desired. Suspended and supported in position. When the second solar shading material is lowered, the second solar shading material is lowered by its own weight when the operation cord hanging outward is pulled slightly downward.

  As described above, the lifting operation of the first solar shielding material is performed by operating the operation code hanging down to the indoor side, and the lifting operation of the second solar radiation shielding material is operated of the operation code hanging down from the outdoor side. The raising / lowering operation of the first solar shading material and the raising / lowering operation of the second solar shading material can be independently performed by operating one operation code.

JP 2004-16422 A

  However, in the conventional blind as described above, each operation of the first and second clutch units is switched by moving the component in the axial direction. The clutch units are arranged in parallel in the front-rear direction of the head box. That is, since one clutch unit is provided for each solar shading material, there is a problem that the number of parts increases and the accommodation of the entire operating device increases.

  The present invention is to solve such a problem, and different operations in a blind having two shielding materials can be performed by operating one operation code, and the operation device can be downsized with a small number of parts. Its purpose is to provide a blind that can be done.

In order to achieve the above-described object, the invention according to claim 1 is characterized in that the first shielding member under the action of urging in either one of the upward direction and the downward direction,
A second shielding material under the action of urging in either one of the upward direction or the downward direction;
A first drive shaft that is rotatably supported and connected to the first shielding member, the rotation direction of which corresponds to the lifting and lowering operation of the first shielding member;
A second drive shaft that is rotatably supported and connected to the second shielding material, the rotation direction of which corresponds to the lifting and lowering operation of the second shielding material;
A first stopper that can be switched between a state that allows rotation of the first drive shaft corresponding to the biased direction of the first shielding member and a state that restricts the rotation;
In a blind provided with a second stopper that can be switched between a state that allows rotation of the second drive shaft corresponding to the biased direction of the second shielding material and a state that restricts the rotation.
An operating shaft that rotates when the operating force is transmitted;
A swing member that can swing in the rotation direction of the operation shaft following the rotation of the operation shaft;
An intermediate member that is rotatably supported by the swing member and that transmits rotation from the operation shaft;
A first transmission member and a second transmission member, which are disposed on the swing locus of the swing member so as to be engageable with the intermediate member,
Is provided,
The first transmission member can transmit rotation to the first drive shaft, and the second transmission member can transmit rotation to the second drive shaft.
The intermediate member is engaged with one of the first and second transmission members according to the swing direction of the swing member that is switched according to the rotation direction of the operation shaft, and the rotation of the operation shaft is the first and second drive shafts. It is transmitted to either one of these.

  According to a second aspect of the present invention, in the blind according to the first aspect, a friction means for transmitting the rotation of the operating shaft to the swinging member and swinging is further provided between the operating shaft and the swinging member. Features.

  According to a third aspect of the present invention, in the blind according to the first or second aspect, the swinging member is disposed so as to be swingable between the first transmission member and the second transmission member, and the operating force is not transmitted to the operation shaft. In some cases, biasing means for biasing the swinging member is further provided so that the intermediate member is held in a neutral position where it does not engage with any transmission member.

  According to a fourth aspect of the present invention, in the blind according to the first aspect, the swinging member is disposed so as to be swingable between the first transmission member and the second transmission member, and between the first transmission member and the second transmission member. Is further provided with a fixed portion formed with a gear portion engageable with the intermediate member. When an operating force is transmitted to the operation shaft, the intermediate member is engaged with the gear portion and swings in the rotation direction of the operation shaft. It is characterized by moving.

  According to the present invention, the transmission member to which the rotation of the operation shaft is transmitted is switched according to the swing direction of the swing member, and the rotation is transmitted to one of the drive shafts via the transmission member. Therefore, the number of parts of the operating device can be reduced and the fit can be reduced.

  According to the invention described in claim 2, the swinging of the swinging member is performed by transmitting the rotation of the operating shaft to the swinging member via the friction means provided between the operating shaft and the swinging member. For this reason, the swinging of the swinging member can be ensured.

  According to the third aspect of the present invention, when the operating force is not transmitted to the operating shaft, the swinging member swings to the neutral position, and the engagement between the intermediate member and each transmitting member is released. The transmission of rotation from the operation shaft to the operation shaft can be cut off. Thereby, it is possible to prevent the operation cord from rotating together when the shielding material is raised and lowered according to the urging force.

  According to the fourth aspect of the present invention, when the intermediate member is not engaged with each transmission member, the intermediate member is engaged with the gear portion, and when the operation shaft rotates, the swing of the swing member is Since the intermediate member moves in the rotational direction while meshing with the gear portion, the swing of the swing member can be ensured.

It is a side view of the blind which concerns on 1st Embodiment of this invention. It is the front view which abbreviate | omitted the shielding material of the blind of FIG. It is a fragmentary sectional view of the operating device of the blind of this invention. It is AA sectional drawing of FIG. 4A is a cross-sectional view taken along the line BB in FIG. 4, FIG. 4B is a cross-sectional view taken along the line CC in FIG. 4, and FIG. 4C is a cross-sectional view taken along the line DD in FIG. It is a figure (all cases are omitted). 4A is a cross-sectional view taken along the line BB in FIG. 4, FIG. 4B is a cross-sectional view taken along the line CC in FIG. 4, and FIG. 4 is a sectional view taken along the line DD of FIG. 4 (all cases are omitted). 4A is a cross-sectional view taken along the line BB in FIG. 4, FIG. 4B is a cross-sectional view taken along the line CC in FIG. 4, and FIG. 4 is a sectional view taken along the line DD of FIG. 4 (all cases are omitted). (A) of the operating device of the blind by 2nd Embodiment is a schematic diagram which shows the state of each member when an intermediate member exists in a neutral position, (b) is an intermediate member moving to the direction of a 1st transmission member. It is a schematic diagram which shows the state in the middle of being, (c) is a schematic diagram which shows the state which the intermediate member engaged with the 1st transmission member, (d) is the intermediate member moving to the direction of the 2nd transmission member It is a schematic diagram which shows the state in the middle of doing, (e) is a schematic diagram which shows the state which the intermediate member engaged with the 2nd transmission member. It is a front view of the blind which concerns on other embodiment of this invention. It is a side view of the blind which concerns on further another embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
In FIG. 1 to FIG. 3, reference numeral 10 denotes a head box fixed to a window frame, a wall surface or the like by a bracket 11, and the upper ends of the first shielding material 14 and the second shielding material 16 are respectively disposed in front and rear of the head box 10. Mounted.

  A first lifting / lowering cord 22 is suspended from the head box 10 so that it can be lifted / lowered, and one end of the first lifting / lowering cord 22 extends along the first shielding member 14 to the rear side of the first shielding member 14 in the vertical direction. The cord ring 15 attached with a gap is inserted and connected to the lowermost cord ring 15. The other end of the first lifting / lowering cord 22 is connected to a first winding drum 24 rotatably supported in the head box 10 so as to be wound and unwound. The first drive shaft 26 is connected to rotate integrally. The first shielding member 14 is under the action of urging the first shielding member 14 in the lowering direction by its own weight, and the first lifting cord 22 of the first drive shaft 26 corresponding to the lowering direction of the first shielding member 14. The first drive shaft 26 is provided with a first stopper 27 that can be switched between a state allowing rotation in the unwinding direction and a state restricting rotation.

  Similarly, the second lifting / lowering cord 32 is suspended from the head box 10 so as to be lifted / lowered, and one end of the second lifting / lowering cord 32 is vertically moved to the rear side of the second shielding member 16 along the second shielding member 16. The cord ring 25 attached at a predetermined interval is inserted through the cord ring 25 and connected to the lowermost cord ring 25. The other end of the second lifting / lowering cord 32 is connected to the second winding drum 34 rotatably supported in the head box 10 so as to be wound and unwound. The second drive shaft 36 is connected to rotate integrally. The second shielding member 16 is under the action of urging the second shielding member 16 in the downward direction by its own weight, and the second lifting / lowering cord 32 of the second drive shaft 36 corresponding to the downward direction of the second shielding member 16 is applied. The second drive shaft 36 is provided with a second stopper 37 that can be switched between a state allowing the rotation in the unwinding direction and a state restricting the rotation.

  The first drive shaft 26 and the second drive shaft 36 extend in parallel to each other in the head box 10, and one end of each of them is connected to an operation unit (operation device) 40 provided at one end of the head box 10. Is done.

  The operation unit 40 will be described in detail with reference to FIGS. The operation unit 40 roughly follows an endless operation cord 42, a pulley 44 around which the operation cord 42 is wound, an operation shaft 46 coupled to rotate integrally with the pulley 44, and the rotation of the operation shaft 46. Thus, the swinging member 48 swingable in the rotation direction of the operation shaft 46, the transmission gear 50 formed on the operation shaft 46, and rotatably supported by the swinging member 48 and engaged with the transmission gear 50. The intermediate member 52, the clutch spring (friction means) 54 disposed on the operation shaft 46, and the first transmission member disposed on the swing locus of the swing member 48 so as to be engageable with the intermediate member 52. 56 and the second transmission member 58, a case 60 fixed to the head box 10, and a coil spring (which urges the swing member 48 so that the intermediate member 52 is held in a neutral position where it does not engage with any transmission member. Energizer ) And a 62.

  One end of the operation shaft 46 is inserted in the pulley 44 so as not to be relatively rotatable, and extends in the longitudinal direction of the head box 10, and is provided so as to be rotatable with respect to the case 60 and not movable in the axial direction. In addition, a transmission gear 50 is formed on the outer peripheral surface of the overhanging portion 46 a that overhangs the operation shaft 46 in the radial direction.

  The swing member 48 is rotatably fitted to the operation shaft 46 at the base portion, and can swing around the base portion. In the vicinity of the tip of the swing member 48, an intermediate member support shaft 48a projects in the direction of the head box 10 in parallel with the operation shaft 46, and supports the intermediate member 52 in a freely rotatable manner. A biasing means support portion 48b extends in parallel with the operation shaft 46 closer to the tip of the swing member 48 than the intermediate member support shaft 48a. The biasing means support portion 48b is a guide hole 60a formed in the case 60. Protruding from.

  As shown in FIG. 5A, the guide hole 60a of the case 60 is formed on the swing locus of the biasing means support portion 48b when the swing member 48 swings. As shown in FIGS. 6A and 7A, the guide hole 60a is configured so that the swinging member 48 swings when the intermediate member 52 is engaged with the first transmission member 56 or the second transmission member 58. The urging means support portion 48b and the end of the guide hole 60a come into contact with each other so that the swinging width of the swinging member 48 is limited so as to stop.

  One end of the coil spring 62 is fixed to the urging means support portion 48 b, and the other end of the coil spring 62 is fixed to the case 60. When the operation shaft 46 is not rotated by the coil spring 62, the intermediate member support shaft 48a has the shafts of the operation shaft 46, the intermediate member support shaft 48a, and the coil spring 62 positioned on the same straight line in the cross section shown in FIG. Are arranged to be. Thus, when the operation shaft 46 is not rotating, the coil spring 62 urges the swing member 48 so that the intermediate member 52 is held at a neutral position where it does not engage any transmission member.

  A clutch spring 54 is provided between the inner peripheral surface side of the overhanging portion 46 a of the operation shaft 46 and the swing member 48. Ends 54a and 54b of the clutch spring 54 are inserted into the notch 48c of the swinging member 48 (see FIG. 5C), and when the operation shaft 46 rotates, the clutch spring rotates integrally with the operation shaft 46. When one of the end portions 54a and 54b comes into contact with one end of the notch portion 48c of the swinging member 48, the operation shaft 46 is rotated by the frictional force between the inner surface of the operation shaft 46 and the clutch spring 54. This is transmitted to the swing member 48 so that the swing member 48 swings. On the other hand, when the swing member 48 cannot rotate, the inner surface of the operation shaft 46 slides with respect to the clutch spring 54 when the end portion 54a or 54b of the clutch spring 54 comes into contact with the swing member 48. Thus, the operation shaft 46 can idle with respect to the swing member 48.

  Since the intermediate member 52 swings integrally with the swing member 48 and always meshes with the transmission gear 50, the intermediate member 52 always rotates via the transmission gear 50 when the operation shaft 46 rotates. When the intermediate member 52 is engaged with either the first transmission member 56 or the second transmission member 58, the rotation is transmitted from the intermediate member 52 to the engaged transmission member 56 or 58.

  The first and second transmission members 56 and 58 are disposed symmetrically with respect to the intermediate member 52 in the neutral position, and the first transmission member 56 is disposed on the front lower portion in the front-rear direction of the head box 10. 58 are located on the upper rear side. The first transmission member 56 is connected to the first drive shaft 26 and the second transmission member 58 is connected to the second drive shaft 36 so as to rotate together, and the first drive shaft 26 and the second drive shaft 36 are connected. Are arranged in parallel to each other.

  The operation of the operation unit 40 will be described with reference to FIGS.

  5 (a) to 5 (c), when the raising and lowering of the first shielding material 14 and the second shielding material 16 are stopped, or the first shielding material 14 and the second shielding material 16 are lowered by their own weight. The state when the operation shaft 46 is not rotating is shown, and the intermediate member 52 is engaged with both the first and second transmission members 56 and 58 by the biasing force of the coil spring 62. Located in a neutral position.

  Next, when the first shielding member 14 is raised, as shown in FIGS. 6A to 6C, in order to engage the intermediate member 52 with the first transmission member 56, first of the operation cord 42 is used. The rear side (the right side in FIG. 6A) is pulled downward as indicated by the arrow, and the pulley 44 is rotated in the clockwise direction in the figure. As a result, the operation shaft 46 and the clutch spring 54 are rotated in the clockwise direction in the drawing together with the pulley 44, and the end portion 54a of the clutch spring 54 is located at the left end portion in FIG. 6C of the notch portion 48c of the swing member 48. The rocking member 48 contacts with the operation shaft 46 and rotates in the clockwise direction in the drawing. Since the oscillating member 48 oscillates to a position where the urging means support portion 48b contacts the left end of FIG. 6A of the guide hole 60a and stops at this position, the clutch spring 54 described above is thereafter used. By this action, the swinging member 48 does not swing and only the operation shaft 46 rotates.

  Rotation is transmitted to the intermediate member 52 from a transmission gear 50 that rotates integrally with the operation shaft 46, and the intermediate member 52 and the first transmission member 56 are engaged at a position where the swing of the swing member 48 is stopped. Since the rotation of the intermediate member 52 is transmitted to the first transmission member 56, the first winding drum 24 is rotated by the rotation of the first drive shaft 26 that rotates integrally with the first transmission member 56, and the first winding The take-up drum 24 winds up the first elevating cord 22 and the first shielding material 14 is raised.

  When the operation of the operation cord 42 is stopped, the swing member 48 swings in the opposite direction (counterclockwise in the figure) so that the intermediate member 52 returns to the neutral position. Further, since the rotation of the first drive shaft 26 is stopped by the first stopper 27, the first shielding member 14 stops.

  When the first shielding member 14 is lowered, the rear side of the operation cord 42 (the right side in FIG. 6A) is slightly lowered as indicated by the arrow, and the pulley 44 is rotated clockwise in the figure. Thereafter, when the operation of the operation cord 42 is stopped, rotation is transmitted to the first drive shaft 26 and the first stopper 27 is released in the same procedure as described above, so that the first shielding member 14 is lowered by its own weight. Can do.

  Next, when the second shielding member 16 is raised, as shown in FIGS. 7A to 7C, first, the operation cord 42 is used to engage the intermediate member 52 with the second transmission member 58. The front side (left side in FIG. 7A) is pulled downward as indicated by an arrow, and the pulley 44 is rotated counterclockwise in the figure. As a result, the operation shaft 46 and the clutch spring 54 are rotated counterclockwise in the drawing together with the pulley 44, and the end 54b of the clutch spring 54 is the right end in FIG. 7C of the notch 48c of the swing member 48. The swinging member 48 rotates in the counterclockwise direction in the drawing together with the operation shaft 46. The swing member 48 swings to a position where the urging means support portion 48b contacts the right end of FIG. 7A of the guide hole 60a and stops at this position. By this action, the swinging member 48 does not swing and only the operation shaft 46 rotates.

  Rotation is transmitted to the intermediate member 52 from a transmission gear 50 that rotates integrally with the operation shaft 46, and the intermediate member 52 and the second transmission member 58 are engaged at a position where the swing of the swing member 48 is stopped. Then, since the rotation of the intermediate member 52 is transmitted to the second transmission member 58, the second winding shaft 34 is rotated by the rotation of the second drive shaft 36 that rotates integrally with the second transmission member 58, and the second winding drum 34 is rotated. The take-up drum 34 winds up the second lifting / lowering cord 32 and the second shielding member 16 is raised.

  When the operation of the operation cord 42 is stopped, the swing member 48 swings in the opposite direction (clockwise in the figure) so that the intermediate member 52 returns to the neutral position. Further, since the rotation of the second drive shaft 36 is stopped by the second stopper 37, the second shielding member 16 stops.

  Further, when lowering the second shielding member 16, the front side (left side in FIG. 7A) of the operation cord 42 is pulled slightly downward as indicated by the arrow, and the pulley 44 is rotated counterclockwise in the figure. After that, when the operation of the operation cord 42 is stopped, the rotation is transmitted to the second drive shaft 36 and the second stopper 37 is released in the same procedure as described above, so that the second shielding member 16 is lowered by its own weight. Can do.

  As described above, the two shielding members 14 and 16 can be moved up and down with one operation cord 42, and the shielding member to be operated is switched depending on the swinging direction of the swinging member 48 based on the rotation of the operation shaft 46. The number of parts can be reduced with a small number of parts.

  The rotation of the operation shaft 46 can be transmitted to the swing member 48 only when necessary by the clutch spring 54 as the friction means, and the swing of the swing member 48 can be ensured.

  In addition, when the shielding material is lowered by its own weight, the swinging member 48 and the intermediate member 52 are in the neutral position, and the operation shaft 46 is disconnected from the drive shafts 26 and 36, thereby preventing the operation cord 42 from rotating together. Can do.

  In the above embodiment, the pulley 44 and the operation shaft 46 are fixed so as not to be relatively rotatable. However, the present invention is not limited to this, and a transmission gear is newly added between the pulley 44 and the operation shaft 46. Thus, the rotation direction of the pulley 44 and the rotation direction of the operation shaft 46 can be reversed. In such a configuration, when the pulley 44 is rotated by pulling the front side of the operation cord 42 downward, the operation shaft 46 rotates in the opposite direction to the pulley 44, so that the swinging member swings to the middle. Since the rotation of the member 52 is transmitted to the first transmission drum 56, the first shielding material can be raised and lowered. Further, when the pulley 44 is rotated by pulling the rear side of the operation cord 42 downward, the operation shaft 46 rotates in the opposite direction to the pulley 44, so that the swing member swings and the intermediate member 52 rotates. Is transmitted to the second transmission drum 58, the second shielding material can be moved up and down. Therefore, the side where the operation code 42 is pulled can be matched with the arrangement side of the shielding material which moves up and down correspondingly.

(Second Embodiment)
Next, a second embodiment of the operation unit 40 will be described based on FIGS. 8 (a) to 8 (e). Only the configuration different from the first embodiment will be described, and the description of the same configuration will be omitted. The same members as those in the first embodiment are denoted by the same reference numerals.

  A gear part 60 b is formed on the swinging locus of the intermediate member 52 between the first transmission member 56 and the second transmission member 58 of the case (fixed part) 60, and the intermediate member 52 is the first transmission member 56. When in the neutral position where neither of the second transmission member 58 and the second transmission member 58 is engaged, the intermediate member 52 and the gear portion 60b are engaged. Further, when the intermediate member 52 swings to the position where the intermediate member 52 engages with the first transmission member 56, the swing member 48 comes into contact with the case 60, and a first restricting portion 60c that restricts further swinging is provided. When the intermediate member 52 swings to the position where it engages with the second transmission member 58, the swinging member 48 comes into contact with each other, and a second restricting portion 60d that restricts further swinging is formed. Yes.

  Note that the operation unit 40 of the second embodiment is not provided with the clutch spring 54 or the coil spring 62 provided in the first embodiment, and therefore, the swing member 48 formed when these are provided. The cutout portion 48c, the biasing means support portion 48b, and the like are also unnecessary.

  Next, the operation of the operation unit 40 of the second embodiment will be described.

  FIG. 8A shows a state in which the intermediate member 52 is not engaged with any of the first and second transmission members 56 and 58 and is positioned at a neutral position where the intermediate member 52 is engaged with the gear portion 60b. ing.

  When raising the 1st shielding material 14, the operation cord 42 is operated similarly to 1st Embodiment, the pulley 44 is rotated, and the operation shaft 46 is rotated to the clockwise direction in Fig.8 (a). As a result, the transmission gear 50 rotates clockwise in FIG. 8A, and this rotation is transmitted to the intermediate member 52. Therefore, as shown in FIG. 8B, the intermediate member 52 meshes with the gear portion 60b. Since the operation shaft 46 moves in the rotation direction, the swing member 48 also swings in the rotation direction of the operation shaft 46. As shown in FIG. 8C, when the intermediate member 52 moves to a position where the intermediate member 52 is engaged with the first transmission member 56, the swinging member 48 is restricted from further swinging by the first restricting portion 60c. In this position, the intermediate member 52 and the first transmission member 56 are kept engaged. Thereby, the state in which the rotation of the operation shaft 46 is transmitted to the first transmission member 56 via the transmission gear 50 and the intermediate member 52 is maintained, and the rotation of the first drive shaft 26 that rotates integrally with the first transmission member 56 is maintained. The 1st winding drum 24 rotates, the 1st winding drum 24 winds up the 1st raising / lowering cord 22, and the 1st shielding material 14 raises.

  When the operation of the operation code 42 is stopped, the rotation of the first drive shaft 26 is stopped by the first stopper 27, so that the first shielding member 14 is stopped.

  Further, when the first shielding member 14 is lowered, as in the first embodiment, the operation cord 42 is pulled slightly downward and the operation shaft 46 is rotated in the clockwise direction in FIG. Is stopped, the rotation is transmitted to the first drive shaft 26 via the transmission gear 50, the intermediate member 52, and the first transmission member 56, and the first stopper 27 is released, so that the first shielding member 14 falls by its own weight. be able to.

  Next, when the second shielding material 16 is raised, the operation cord 42 is operated to rotate the pulley 44 as in the first embodiment, and the operation shaft 46 is rotated counterclockwise in FIG. Rotate. As a result, the transmission gear 50 rotates counterclockwise in FIG. 8A, and this rotation is transmitted to the intermediate member 52, so that the intermediate member 52 moves away from the first transmission member 56 and passes through the neutral position. As shown in FIG. 8D, since the intermediate member 52 moves in the rotation direction of the operation shaft 46 while meshing with the gear portion 60b, the swing member 48 also swings in the rotation direction of the operation shaft 46. Go. As shown in FIG. 8E, when the intermediate member 52 moves to a position where the intermediate member 52 engages with the second transmission member 58, the swinging member 48 is restricted from further swinging by the second restricting member 60d. In this position, the intermediate member 52 and the second transmission member 58 are kept engaged. Thereby, the state in which the rotation of the operation shaft 46 is transmitted to the second transmission member 58 via the transmission gear 50 and the intermediate member 52 is maintained, and the rotation of the second drive shaft 36 that rotates integrally with the second transmission member 58 is maintained. The 2nd winding drum 34 rotates, the 2nd winding drum 34 winds up the 2nd raising / lowering cord 32, and the 2nd shielding material 16 raises.

  When the operation of the operation code 42 is stopped, the rotation of the second drive shaft 36 is stopped by the second stopper 37, so that the second shielding member 16 stops.

  Further, when lowering the second shielding material 16, as in the first embodiment, the operation cord 42 is pulled slightly downward and the operation shaft 46 is rotated counterclockwise in the figure, and then the operation cord 42 When the operation is stopped, the rotation is transmitted to the second drive shaft 36 through the transmission gear 50, the intermediate member 52, and the second transmission member 58, and the second stopper 37 is released. can do.

  In this way, it can be made to act similarly to 1st Embodiment, and the effect similar to 1st Embodiment can be acquired.

  Further, since the intermediate member 52 moves while engaging with the gear portion 60b between the first transmission member 56 and the second transmission member 58, the rotation member 48 is caused to follow the operation shaft 46 and rotate in the direction of rotation. Can be reliably swung.

(Other embodiments)
In the above example, the roman shade has been described as an example of the blind. However, the present invention is not limited to this and can be applied to any blind.

  Moreover, in the above example, although the 1st shielding material and the 2nd shielding material were isolate | separated completely, it does not restrict to this. For example, as shown in FIG. 9, the upper end of the first shielding material 114 is attached to the head box 10, the lower end of the first shielding material 114 is an intermediate bar 118, and the intermediate bar 118 has a second shielding material. 116 is attached, and the lower end of the second shielding material 116 is a bottom rail 120, and the first shielding material 114 and the second shielding material 116 are each formed of a screen that can be folded in a zigzag shape. It can also be.

  In this case, the lifting / lowering cord 122 is suspended from the head box 10 so that the lifting / lowering cord 122 can be lifted / lowered. And is connected to the bottom rail 120. The other end of the lifting / lowering cord 122 is connected to the first winding drum 24 rotatably supported in the head box 10 so as to be wound and unwound.

  Similarly, a dimming cord 132 is suspended from the head box 10 so as to be movable up and down, and one end of the dimming cord 132 is connected to the intermediate bar 118 through each hook of the first shielding material 114. The other end of the dimming cord 132 is coupled to the second winding drum 34 rotatably supported in the head box 10 so as to be wound and unwound.

  In this case, by pulling the operation cord 42 to one side, the bottom rail 120 is raised and lowered, and as a result, the second shielding member 116 can be raised and lowered and the first shielding member 114 can be raised and lowered. The intermediate bar 118 can be lifted and lowered as a result, and as a result, the first shielding member 114 can be lifted and lowered. Thus, in the blind having the first shielding material and the second shielding material, different operations can be performed by different operations on one operation code 42.

  Moreover, it is also possible to apply to a roll screen as a blind. As shown in FIG. 10, the roll screen includes two first winding pipes 202 and a second winding pipe 212 that are rotatably supported by the side bracket 200. One end of the first shielding material 204 and the second shielding material 214 is wound on the second winding pipe 212 so as to be wound and unwound.

  A stopper is built in each of the first winding pipe 202 and the second winding pipe 212. As this stopper, for example, a stopper having the same configuration as the stoppers 27 and 37 can be used, and the first drive shaft 26 is connected to the first winding pipe 202 so as to be integrally rotatable, thereby the second drive shaft. It can comprise by connecting 36 with the 2nd winding pipe 212 so that integral rotation is possible.

  Thus, by selecting the operation direction of one operation code 42, the winding pipes 202 and 212 to be driven can be switched to operate different shielding materials.

  In addition, when a roll screen is applied as a blind, a winding spring that constantly urges the winding pipe in the shielding material winding direction can be accommodated inside the winding pipe.

  In this case, by pulling the front side of the operation cord 42 downward, the shielding material is lowered according to the amount pulled, and by pulling the front side of the operation cord 42 slightly downward, the shielding material is not its own weight. Although different in that it is urged in the direction of rising by the urging force of the take-up spring, other switching operations can be similarly applied.

14 1st shielding material 16 2nd shielding material 26 1st drive shaft 27 1st stopper 36 2nd drive shaft 37 2nd stopper 42 Operation code 46 Operation shaft 48 Swing member 52 Intermediate member 54 Clutch spring (friction means)
56 1st transmission member 58 2nd transmission member 60 Case (fixed part)
60b Gear portion 62 Coil spring (biasing means)
114 1st shielding material 116 2nd shielding material 204 1st shielding material 214 2nd shielding material

Claims (4)

A first shielding material under the action of urging in either one of the upward direction or the downward direction;
A second shielding material under the action of urging in either one of the upward direction or the downward direction;
A first drive shaft that is rotatably supported and connected to the first shielding member, the rotation direction of which corresponds to the lifting and lowering operation of the first shielding member;
A second drive shaft that is rotatably supported and connected to the second shielding material, the rotation direction of which corresponds to the lifting and lowering operation of the second shielding material;
A first stopper that can be switched between a state that allows rotation of the first drive shaft corresponding to the biased direction of the first shielding member and a state that restricts the rotation;
In a blind provided with a second stopper that can be switched between a state that allows rotation of the second drive shaft corresponding to the biased direction of the second shielding material and a state that restricts the rotation.
An operating shaft (46) that rotates upon transmission of the operating force;
A swinging member (48) capable of swinging in the rotation direction of the operation shaft (46) following the rotation of the operation shaft (46);
An intermediate member (52) that is rotatably supported by the swing member (48) and that transmits rotation from the operation shaft (46);
A first transmission member (56) and a second transmission member (58) disposed on the swing locus of the swing member (48) so as to be engageable with the intermediate member (52), respectively;
Is provided,
The first transmission member (56) can transmit rotation to the first drive shaft (26), and the second transmission member (58) can transmit rotation to the second drive shaft (36), respectively.
The intermediate member (52) is engaged with one of the first and second transmission members (56, 58) depending on the swing direction of the swing member (48) that is switched according to the rotation direction of the operation shaft (46). The blind is characterized in that the rotation of the operation shaft (46) is transmitted to one of the first and second drive shafts (26, 36).   Between the operating shaft (46) and the swinging member (48), a friction means (54) for transmitting the rotation of the operating shaft (46) to the swinging member (48) to swing is further provided. The brand according to claim 1, which is characterized.   The swing member (48) is disposed so as to be swingable between the first transmission member (56) and the second transmission member (58), and when the operating force is not transmitted to the operation shaft (46), the intermediate member (52). 3) is further provided with a biasing means (62) for biasing the swinging member so that it is held in a neutral position where it does not engage any of the transmission members (56, 58). The listed blind.   The swing member (48) is disposed so as to be swingable between the first transmission member (56) and the second transmission member (58), and between the first transmission member (56) and the second transmission member (58). Is further provided with a fixed portion (60) in which a gear portion (60b) that can be engaged with the intermediate member (52) is formed. When an operating force is transmitted to the operating shaft (46), the intermediate member (52) is provided. The blind according to claim 1, wherein the blind is swung in the rotational direction of the operating shaft while being engaged with the gear portion.

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