JP4504778B2 - blind - Google Patents

Description

  The present invention is composed of an upper slat group in which a slat group supported in an up and down alignment state is disposed on the upper side and a lower slat group disposed on the lower side, and an upper ladder cord that supports the upper slat group; The present invention relates to a blind having a lower ladder cord that supports a lower slat group.

  Conventionally, as this type of brand, one described in Patent Document 1 (Japanese Utility Model Publication No. 62-3517) is known. In the blind described in this publication, the first and second rotating shafts are rotatable in the upper box, the first and second tilting drums attached to the respective rotating shafts, the upper box and the middle box. A first slat group suspended by a first slat tilting cable operated by a first slat tilting cable and a second slat tilting cable operated between a middle box and a lower box And a second slat group suspended by a second slat tilting cable, and the first and second slat groups are individually angle-changed.

  In such a blind, it is possible to rotate the first slat group on the upper side and the second slat group on the lower side so that the angles are different from each other. Can also be performed separately.

Japanese Utility Model Publication No. 62-3517

  However, the above-mentioned blind has a problem in that the upper box must be enlarged because the rotating shaft and the tilting drum corresponding to each slat group must be arranged in the upper box.

  The present invention has been made in view of such a problem, and has two slat groups, each of the slat groups can have different angles, and the configuration for rotating these slat groups can be made compact. Its purpose is to provide a blind that can be used.

In order to achieve the above-described object, according to the first aspect of the present invention, the slat group supported in an up-and-down alignment state includes an upper slat group disposed on the upper side and a lower slat group disposed on the lower side. In a blind having an upper ladder cord configured to support the upper slat group and a lower ladder cord supporting the lower slat group,
The upper ends of the front and rear vertical cords constituting each ladder cord are fixed to a common winding drum,
The upper part of one of the front and rear vertical cords constituting each ladder cord is formed in a bifurcated shape, and the bifurcated cord is fixed so as to be wound around the winding drum from the front and rear. the codes and the lower ladder cord, vertical codes different sides in front and back, characterized in Rukoto formed bifurcated.

According to a second aspect of the present invention, the slat group supported in an aligned state vertically includes an upper slat group disposed on the upper side and a lower slat group disposed on the lower side, and supports the upper slat group. In a blind having an upper ladder cord and a lower ladder cord supporting a lower slat group,
The upper ends of the front and rear vertical cords constituting each ladder cord are fixed to a common winding drum,
In the upper ladder cord and the lower ladder cord, the upper part of the vertical cord on the different side in the front and rear is formed in a bifurcated shape, and the bifurcated cord is fixed so as to be wound around the winding drum from the front and rear,
Depending on the direction of rotation of the winding drum, when the front and rear vertical cord hand ladder code is relative displacement, front and rear vertical cord of the other ladder cord is not relative displacement, front and rear vertical the other ladder cord When the cord is relatively displaced, the vertical cords before and after one ladder cord are configured not to be displaced relatively.

  According to the present invention, when the vertical cords before and after one ladder cord are relatively displaced in accordance with the rotation of the winding drum, the vertical cords before and after the other ladder cord are not relatively displaced. The slat group supported by the cord rotates, and the slat group supported by the other ladder cord maintains its rotation angle. In addition, when the vertical cords before and after the other ladder cord are relatively displaced, the vertical cords before and after the one ladder cord are not relatively displaced. Therefore, the slat group supported by the other ladder cord rotates, The slat group supported by the ladder cord maintains its rotation angle. With the above operation, it becomes possible to cause the upper slat group and the lower slat group to perform different opening and closing operations with respect to the rotation operation of one winding drum, and thus the upper slat group and the lower slat group. Can be selectively at different rotation angles or the same rotation angle. Since the winding drum can be used in common by the upper slat group and the lower slat group, and it is not necessary to provide separate drums, the winding drum can be made compact.

  According to the second aspect of the present invention, when the winding drum rotates in one direction, the vertical cord wound from the front side is lowered and the vertical cord wound from the rear side is raised. With respect to the vertical cord, one of the bifurcated cords rises and the other tries to descend, so that the cord that is going to descend becomes slack, and as a whole rises depending on the cord that is going to rise. In other words, in a ladder cord in which the rear vertical cord is bifurcated, relative displacement occurs in the front and rear vertical cords, but in a ladder cord in which the front vertical cord is bifurcated, the front and rear vertical cords Both cords rise and no relative displacement occurs.

  Similarly, when the winding drum rotates in the opposite direction, the vertical cord wound from the rear side descends and the vertical cord wound from the front side rises. As one of the shaped cords rises and the other attempts to descend, the cords that are going to descend loosen and rise as a whole by the cords that are going to rise. In other words, in a ladder cord in which the front vertical cord is bifurcated, relative displacement occurs in the front and rear vertical cords, but in a ladder cord in which the rear vertical cord is bifurcated, the front and rear vertical cords Both cords rise and no relative displacement occurs.

  Thus, with a simple configuration, when the vertical cords before and after one ladder cord are relatively displaced, the vertical cords before and after the other ladder cord can be prevented from relative displacement.

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

  FIG. 1 is a diagram showing an overall view of a blind according to the present invention.

  In the figure, it is a front view of the blind concerning embodiment of this invention. In the figure, the blind 10 has a head box 12 attached to a fixed part such as a wall surface or a window frame by a bracket.

  A plurality of ladder cords are suspended from the head box 12 at intervals in the width direction. As shown in FIG. 2, the ladder code includes two types of an upper ladder cord 14 and a lower ladder cord 15 that are suspended at substantially the same position in the width direction. The upper ladder cord 14 is composed of vertical cords 14a and 14b extending vertically in the front-rear direction and a number of middle-stage cords 14c connecting the front and rear vertical cords 14a and 14b. Similarly, the lower ladder cord 15 is vertical in the front-rear direction. The vertical cords 15a and 15b extend to the front and the front and rear vertical cords 15a and 15b are connected to each other.

  However, in the upper ladder cord 14, the length of the vertical cord 14a hanging from the head box 12 is the length from the head box 12 to the middle position in the height direction of the blind 10, and the lower ladder cord 15 is vertical. The middle cord 15c is provided only at the lower portion of the cord 15a.

  A slat 16 is supported in an aligned state on the middle cord 14c of the upper ladder cord 14 to form an upper slat group 16A, and a slat 16 is supported in an aligned state on the middle cord 15c of the lower ladder cord 15. And constitutes the lower slat group 16B.

  The lower ends of the vertical cords 15a before and after the lower ladder cord 15 are connected to a bottom rail 18 disposed at the lower end of the lower slat group 16B.

  The upper portions of the two vertical cords 14 a, 14 b, 15 a, 15 b of the upper ladder cord 14 and the lower ladder cord 15 are introduced into the head box 12 and connected to the winding drum 24 of the tilt adjusting device 20. The

  The inclination adjusting device 20 is disposed along the longitudinal direction in the head box 12 and is rotatably supported by a rotation shaft 22, a winding drum 24 that can rotate integrally with the rotation shaft 22, and a winding drum. And a manual or electric operation unit that rotates the motor 24. The example shown in FIG. 1 is an electric example, and includes a motor 26 that rotates the winding drum 24 and a drive unit 28 that controls the motor 26. The command to the drive unit 28 is issued from a controller at hand, a remote controller, or a central control device by central control connected by a signal line (not shown). When the blind 10 is manual, the blind 10 may be provided with an operation unit capable of transmitting rotation to the rotary shaft 22.

  The rotation of the rotary shaft 22 is transmitted to the take-up drum 24 via a clutch mechanism (not shown). The vertical cords 14a, 14b, 15a, and 15b before and after the ladder cords 14 and 15 are each caused by a relative displacement in the vertical direction between them with the rotation of the winding drum 24, and thereby the middle cord 14c. , 15c is changed so that the slat 16 rotates. Since there is a limit to the inclination angle of the middle cords 14c and 15c, a clutch mechanism is provided between the take-up drum 24 and the rotary shaft 22 by a clutch spring, and the clutch spring rotates within a predetermined range. Except for transmitting the rotation of the shaft 22 to the winding drum 24, the rotation is not transmitted to the winding drum 24.

  As shown in FIG. 3, the upper part of one of the two vertical cords 14a, 14b, 15a, and 15b of the upper ladder cord 14 and the lower ladder cord 15 is divided into two forks, for a total of 3 The book is introduced into the head box 12 and connected to the winding drum 24 of the tilt adjusting device 20. That is, in the case of the upper ladder cord 14, the upper portion of the vertical cord 14a on the front side among the vertical cords 14a and 14b on the front and rear is a bifurcated cord 14a1 and 14a2. In the case of the lower ladder cord 15, the upper portion of the vertical cord 15b on the rear side of the front and rear vertical cords 15a and 15b is a bifurcated cord 15b1 and 15b2. As described above, the bifurcated vertical cord is different in the front and rear directions of the upper ladder cord 14 and the lower ladder cord 15, and accordingly, the vertical cord 14b on the rear side of the upper ladder cord 14 constitutes a bifurcated cord. In this case, the vertical cord 15a on the front side of the lower ladder cord 15 forms a bifurcated cord.

  At the upper ends of the front and rear vertical cords 14a and 14b of the upper ladder cord 14, one of the front bifurcated cords 14a1 is wound from the front side of the winding drum 24, and the other side of the front bifurcated cord 14a2 and the rear side thereof. The vertical cord 14 b is wound from the rear side of the winding drum 24, and these three cords are fixed at the upper end of the winding drum 24.

  Further, the upper ends of the vertical cords 15a and 15b before and after the lower ladder cord 15 have one of the rear bifurcated cords 15b2 wound around from the rear side of the winding drum 24, and the other of the rear bifurcated cords. 15 b 1 and the front vertical cord 15 a are wound from the front side of the winding drum 24, and these three cords are fixed at the upper end of the winding drum 24.

  The upper ends of the upper ladder cord 14 and the lower ladder cord 15 are fixed in common at a fixing point 24 a of the winding drum 24.

  Further, a plurality of lifting cords 30 are suspended from the head box 12 at intervals in the width direction. The lifting / lowering cord 30 is inserted through an insertion hole or insertion notch provided in each slat 16, one end of the lifting / lowering cord 30 is connected to the bottom rail 18, and the other end of each lifting / lowering cord 30 is placed in the head box 12. It is introduced and connected to the lifting drum 34 of the lifting adjustment device 32. The lifting / lowering adjusting device 32 is constituted by the rotating shaft 22 and the lifting / lowering drum 34, and the lifting / lowering drum 32 rotates integrally with the rotating shaft 22. As the rotary shaft 22 rotates, the lifting / lowering cord 30 is wound or unwound on the lifting / lowering drum 34, and the slat 16 moves up and down.

  In the blind configured as described above, the adjustment of the angles of the upper slat group 16A and the lower slat group 16B will be described.

  First, as shown in FIG. 4 (c), in the state where the bifurcated cords 14a1, 14a2, 15b1, and 15b2 of the ladder cords 14 and 15 are not slack, as shown in the figure, the middle stage of the upper ladder cord 14 The cord 14c is horizontal and the middle cord 15c of the lower ladder cord 15 is vertical, so that the upper slat group 16A is fully open and the lower slat group 16B is fully closed. In this state, light is introduced from the upper side of the window in which the blind is set, and direct irradiation from the lower side of the window in which the blind is easily affected can be blocked.

  When the rotary shaft 22 is rotated from the state of FIG. 4C to rotate the winding drum 24 in one direction so that the fixing point 24a is on the front side, the winding drum 24 is moved from the rear side. The wound cord is raised and the cord wound from the front side is lowered. That is, with respect to the upper ladder cord 14, the rear vertical cord 14b rises, the bifurcated cord 14a2 rises and the bifurcated cord 14a1 descends, but the bifurcated cord 14a2 rises. Because it is doing, it will sag without descending straight. Accordingly, since the upper ladder cord 14 rises both of the front vertical cord 14a and the rear vertical cord 14b and translates upward as a whole, the middle cord 14c maintains the level, and the upper slat Group 16A remains fully open (FIG. 4 (b)).

  On the other hand, for the lower ladder cord 15, the front vertical cord 15a is lowered, the bifurcated cord 15b2 of the bifurcated cords 15b1 and 15b2 is raised, and the bifurcated cord 15b1 is lowered, but the bifurcated cord 15b2 is raised. Because it is doing, it will sag without descending straight. Accordingly, in the lower ladder cord 15, the front vertical cord 15a is lowered, the rear vertical cord 15b is raised, and relative movement occurs in the front and rear, so the middle cord 15c rotates from vertical to horizontal. To do. In response, the lower slat group 16B opens from fully closed to fully open (FIG. 4B).

  The state shown in FIG. 4A represents a state in which the middle cord 15c of the lower ladder cord 15 is horizontal and the lower slat group 16B is fully opened together with the upper slat group 16A. In this state, light can be taken from the entire surface of the window where the blind is set.

  When the rotary shaft 22 is rotated from the state of FIG. 4C and the winding drum 24 is rotated in the direction opposite to the one direction so that the fixing point 24a is on the rear side, the winding drum 24 is On the other hand, the cord wound from the front side rises, and the cord wound from the rear side descends. That is, for the upper ladder cord 14, the bifurcated cord 14a1 of the bifurcated cord 14a1 and 14a2 rises and the bifurcated cord 14a2 descends, but the bifurcated cord 14a1 rises, so that it does not descend straight. The vertical cord 14b on the rear side is lowered. Accordingly, in the upper ladder cord 14, the vertical cord 14a on the front side rises, the vertical cord 14b on the rear side descends, and relative movement occurs in the front and rear, so the middle cord 14c is inclined from the horizontal. In response, the upper slat group 16A closes from fully open to fully closed (FIG. 4D).

  On the other hand, for the lower ladder cord 15, the front vertical cord 15a rises, the bifurcated cord 15b1 of the bifurcated cords 15b1 and 15b2 rises, and the bifurcated cord 15b2 descends, but the bifurcated cord 15b1 rises. Because it is doing, it will sag without descending straight. Accordingly, since the lower ladder cord 15 rises in both the front vertical cord 15a and the rear vertical cord 15b and translates upward as a whole, the middle cord 15c maintains the vertical position, The side slat group 16B is kept fully closed (FIG. 4 (d)).

  The state shown in FIG. 4 (e) represents a state in which the middle slat 14c of the upper ladder cord 14 is vertical and the upper slat group 16A is fully closed together with the lower slat group 16B. In this state, the window in which the blind is set can be shielded entirely.

  In this way, one type of winding drum 24 is rotated, and depending on the direction, the upper and lower slat groups 16A and 16B are both fully open, both fully closed, and one is fully open and the other is fully closed. State can be realized, and the intermediate state can also be realized.

  In the embodiment shown in FIG. 4, the winding drum 24 is in either direction, with the upper slat group 16 </ b> A shown in FIG. 4 (c) being fully open and the lower slat group 16 </ b> B being fully closed. The state shown in FIG. 4C is the center angle position of the winding drum 24, but it is not limited to this.

  For example, as shown in FIG. 5, the upper slat group 16A may be fully closed and the lower slat group 16B may be fully opened at the central angular position of FIG. By rotation, both the upper slat group 16A and the lower slat group 16B are fully closed (FIG. 5 (a)), both the upper slat group 16A and the lower slat group 16B are fully opened (FIG. 5 (c)), and It can be changed to an intermediate state.

  Alternatively, as shown in FIG. 6, at the central angular position in FIG. 6B, the upper slat group 16 </ b> A is moved by the rotation of the winding drum 24 from the state where both the upper slat group 16 </ b> A and the lower slat group 16 </ b> B are fully closed. Fully closed, lower slat group 16B fully open (FIG. 6A), upper slat group 16A fully open, lower slat group 16B fully closed (FIG. 6C), and intermediate state It can also be made.

  Alternatively, as shown in FIG. 7, the upper slat group 16A is fully opened by the rotation of the winding drum 24 from the state where both the upper slat group 16A and the lower slat group 16B are fully opened at the central angular position in FIG. The lower slat group 16B is fully closed (FIG. 7A), the upper slat group 16A is fully closed, the lower slat group 16B is fully opened (FIG. 7C), and an intermediate state thereof. You can also.

  In the figure (excluding FIG. 3), the upper ladder code 14 is indicated by a broken line and the lower ladder code 15 is indicated by a solid line for easy understanding.

  Thus, since various states of the upper slat group 16A and the lower slat group 16B can be realized by the rotation of the common winding drum 24, the number of parts can be reduced and the configuration can be made compact.

(A) is a front view of the blind concerning embodiment by this invention, (b) is a side view. It is a perspective view of a part of a blind representing an upper ladder cord, a lower ladder cord, and a slat. It is an expanded sectional view near a head box. It is a fragmentary sectional view of the blind showing operation | movement of the blind according to rotation of a winding drum. It is a fragmentary sectional view of the blind showing operation | movement of the blind according to rotation of the winding drum which concerns on another embodiment. It is a fragmentary sectional view of the blind showing operation | movement of the blind according to rotation of the winding drum which concerns on another embodiment. It is a fragmentary sectional view of the blind showing operation | movement of the blind according to rotation of the winding drum which concerns on another embodiment.

Explanation of symbols

10 Blind 14 Upper ladder cord 14a Front vertical cord 14a1 Forked cord 14a2 Forked cord 14b Rear vertical cord 15 Lower ladder cord 15a Front vertical cord 15b Rear vertical cord 15b1 Forked cord 15b2 Forked cord 16A Upper slat group 16B Lower slat group 24 Winding drum

Claims (2)

The slat group supported in an aligned state vertically is composed of an upper slat group (16A) disposed on the upper side and a lower slat group (16B) disposed on the lower side, and supports the upper slat group (16A). In a blind having an upper ladder cord (14) and a lower ladder cord (15) supporting the lower slat group (16B),
The upper ends of the front and rear vertical cords (14a, 14b, 15a, 15b) constituting each ladder cord (14, 15) are fixed to a common winding drum (24),
Of the front and rear vertical cords (14a, 14b, 15a, 15b) constituting each ladder cord (14, 15), the upper portion of one vertical cord (14a, 15b) is formed in a bifurcated shape, resulting in a bifurcated cord (14a1, 14a2, 15b1, 15b2) are fixed so as to be wound around the winding drum (24) from the front and back, and the upper ladder cord (14) and the lower ladder cord (15) are different on the front and rear sides. The vertical cord is formed in a bifurcated shape. The slat group supported in an aligned state vertically is composed of an upper slat group (16A) disposed on the upper side and a lower slat group (16B) disposed on the lower side, and supports the upper slat group (16A). In a blind having an upper ladder cord (14) and a lower ladder cord (15) supporting the lower slat group (16B),
The upper ends of the front and rear vertical cords (14a, 14b, 15a, 15b) constituting each ladder cord (14, 15) are fixed to a common winding drum (24),
In the upper ladder cord (14) and the lower ladder cord (15), the upper portions of the vertical cords (14a, 15b) on the different sides are formed in a bifurcated shape, and the bifurcated cords (14a1, 14a2, 15b1) , 15b2) is fixed so as to be wound around the winding drum (24) from the front and rear.
When the vertical cords before and after one ladder cord are relatively displaced according to the direction of rotation of the winding drum (24), the vertical cords before and after the other ladder cord are not relatively displaced, and before and after the other ladder cord. The blind is constructed so that the vertical cords before and after one ladder cord are not relatively displaced when the vertical cord is relatively displaced .

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