JP4488943B2 - blind - Google Patents

Description

  The present invention relates to a blind in which an upper slat group and a lower slat group of many slat rows can take different slat angles.

  Conventionally, what was described in patent document 1 is known as this kind of blind. The blind described in this document has a slat drive shaft having a first slat rotating drum under drive coupling with the slat drive shaft, and is stationary until the forward and reverse rotations of the drum reach a predetermined angle, and after reaching the predetermined angle. A second slat swirling drum that is drivingly coupled to the drum is combined with the first slat swirling drum, extends along the front and rear portions of the ladder cord, and has a lower end fixed to the bottom bar, and the ladder cord front A leading cord that is releasably bundled with the rear portion and the trailing portion, and the upper end side of the leading cord is fixed to the first slat turning drum, and the upper end side of the ladder cord is fixed to the second slat turning drum. Yes.

  According to this, when the slat drive shaft is rotated, the first slat revolving drum is rotated, and the front part and the rear part of the front cord move relatively up and down, so that the front cord and the bundling are integrated. When the ladder code below the connected portion moves integrally with the forward movement cord, the slat group below the connecting portion turns, and then the second slat turning drum starts to rotate, the connecting portion The upper slat group is swiveled.

Japanese Patent Publication No. 63-55595

  However, in the above-mentioned conventional blind, it is necessary to move the lower part of the leading code and the trailing part of the leading code below the connecting portion of the ladder code integrally with the leading code. The one that moves upward among the preceding part and the following part that moves up and down can displace the preceding part or the following part of the ladder code that is suspended, Those who move downward in the trailing part can not further displace the leading part or trailing part of the suspended ladder code downward, so in the end, the lower slats are fully rotated. There is a problem that it can not be made.

  The present invention has been made in view of such problems, and it is an object of the present invention to provide a blind in which the upper slat group and the lower slat group can take different slat angles, and each can surely take a desired slat angle. Objective.

In order to achieve the above-described object, the invention according to claim 1 is configured to rotationally drive a rotating shaft to which one end of a ladder cord arranged in a head box and supporting a plurality of slat rows in an aligned state is coupled, In the blind with the slat angle variable via the ladder cord by the rotation of the rotating shaft,
A number of slat trains are composed of upper and lower slat groups,
The ladder cord is composed of an upper ladder cord that supports the upper slat group, and a lower ladder cord that supports the lower slat group,
The upper end of the upper ladder cord and the upper end of the lower ladder cord are respectively connected to the common rotating shaft so that the slat angles of the upper slat group and the lower slat group can take different angles ,
A portion of at least one side of the part and the ladder cord under the upper ladder cord of the front and rear vertical cord of each ladder cord is connected, characterized in Rukoto.

  According to a second aspect of the present invention, there is provided a drum on the rotating shaft according to the first aspect, wherein the drum is integrally rotated only when the drum is rotated at a predetermined angle or less, and is idled when the drum is rotated at a predetermined angle or more. And an upper end of the upper ladder cord and an upper end of the lower ladder cord are connected to different clutch rings.

The invention described in claim 3 is such that the lower end of the upper ladder cord on one side of the vertical cords before and after each ladder cord described in claim 1 or 2 is connected to a part of the lower ladder cord, and the upper portion on the other side. The lower ladder cord and the lower ladder cord are not connected to each other.

According to a fourth aspect of the present invention, when the upper slat group and the lower slat group according to the third aspect take a slat angle inclined in the same direction, the vertical cord that descends relatively downward among the front and rear vertical cords. The lower end of the upper ladder cord of the cord and the lower ladder cord are not connected.

According to a fifth aspect of the invention, there is provided a connector described in claim 3 or 4, the ladder cord and the ladder cord bottom for the upper, the lowermost slat and the lower slat group of the upper slat group between the uppermost slats The pitch is connected so as to be the same as the pitch of the upper and lower slats supported by each ladder cord.

  According to the present invention, the upper ladder cord for supporting the upper slat group and the lower ladder cord for supporting the lower slat group are provided separately, so that the slat angle is different between the upper slat group and the lower slat group. So that it can be reliably rotated. In this way, it is possible to partially switch the rotation of the slats such that one of the upper slat group and the lower slat group is fully closed and the other is horizontal or all the slat groups are fully closed.

The upper ladder cord and the lower ladder cord are each connected to a common rotating shaft. That is, since the rotating shaft is shared, the upper slat group and the lower slat group can be connected without increasing the number of parts. Different slat angles can be taken.
Also, when one vertical cord of the lower ladder cord connected to the upper ladder cord is displaced downward relative to the other vertical cord, the vertical cord lowers the vertical cord of the upper ladder cord. Since the upper slat group can be pulled to the side to assist the rotation of the upper slat group in the closing direction, the upper slat group can be surely set to the fully closed slat angle.

  According to the second aspect of the present invention, even when the rotating shaft is shared as the winding / unwinding shaft of the lifting / lowering cord by using the clutch ring, the rotating shaft is rotated a plurality of times without changing the slat angle of the slat. Can be made.

According to the invention described in claim 3 , when one vertical cord of the lower ladder cord connected to the upper ladder cord is displaced downward relative to the other vertical cord, the vertical cord is Since the vertical code of the ladder cord can be pulled downward to assist the rotation of the upper slat group in the closing direction, the upper slat group can be surely brought to the fully closed slat angle. In addition, since the other of the front and rear vertical cords is not connected, it is possible to prevent the vertical cord from inhibiting the rotation of the upper slat group.

According to the invention described in claim 4 , when the lower slat group has an inclined slat angle, the distance between the front and rear vertical cords of the lower ladder cord is reduced, and in order to press the front and rear of the upper slat group, Even if the vertical cord which is displaced downward is not connected, the inclination of the upper slat group can be promoted.

According to the invention described in claim 5 , when the upper slat group and the lower slat group have the same slat angle, the pitch is uniform throughout, so that all the slats always have the same slat angle. An equivalent appearance can be obtained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a blind according to an embodiment of the present invention, and FIG. 2 is a side view.
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 11.

  A rotating shaft 14 extending in the axial direction is rotatably supported in the head box 12. A pulley is provided at one end of the rotating shaft 14, and an operation unit 16 wound around the pulley is led out from the head box 12. By operating the operation unit 16, the rotation shaft 14 is rotated. In this example, the rotating shaft 14 is driven to rotate manually. However, the rotating shaft 14 may be driven to rotate electrically.

  A drum 18 that rotates integrally with the rotation shaft 14 is provided on the rotation shaft 14 so as to be appropriately separated in the longitudinal direction. The drum 18 is pivotally supported by a drum receiver 17, and an upper end of a ladder cord that supports a large number of slat rows in an aligned state is connected to the drum 18 as described below.

  The ladder code is composed of two types of ladder codes that are separate parts of the upper ladder code 20 and the lower ladder code 22. The upper ladder cord 20 supports the upper slat group 24 in the slat row arranged in an aligned state from the head box 12, and the lower ladder cord 22 supports the lower slat group 26 in the slat row.

  As shown in FIGS. 3 and 6-8, the upper ladder cord 20 and the lower ladder cord 22 are connected to the drum 18 via clutch rings 30 and 32, respectively. The clutch rings 30 and 32 are juxtaposed to the drum 18 and fastened to the peripheral surface of the drum 18, and both ends thereof are folded back portions 30 a, 30 a, 32 a, and 32 a.

  In the head box 12, stoppers 34 that interfere with the folded portions 30a and 32a of the clutch rings 30 and 32 are provided on the front side and the rear side. The clutch rings 30 and 32 are relaxed when the folded portions 30 a and 32 a come into contact with any one of the stoppers 34, so that the drum 18 can idle in the clutch rings 30 and 32. In this way, the clutch rings 30 and 32 are moved forward (FIG. 5B) and rear (FIG. 5C) from the neutral position where the pair of folded portions 30a shown in FIG. )) Can rotate within a range of a predetermined angle, and idles relative to the drum 18 when rotating over a predetermined angle.

  FIG. 4 is a diagram showing the arrangement of the upper ladder cord 20 and the lower ladder cord 22 in which the clutch rings 30 and 32 are shown in an unfolded state for explanation.

  The upper ends of the front vertical cord 20a and the rear vertical cord 20b of the upper ladder cord 20 are fixed to the folded portions 30a and 30a of the clutch ring 30, and the front side of the lower ladder cord 22 is fitted to the folded portions 32a and 32a of the clutch ring 32. The upper ends of the vertical cord 22a and the rear vertical cord 22b are fixed.

  Each slat of the upper slat group 24 is placed on the middle cord 20 c of the upper ladder cord 20, and each slat of the lower slat group 26 is placed on the middle cord 22 c of the lower ladder cord 22. For this reason, the middle cord 22c of the lower ladder cord 22 is formed only in the lower portion of the front vertical cord 22a and the rear vertical cord 22b. The upper portions of the front vertical cord 22a and the rear vertical cord 22b of the lower ladder cord 22 are properly positioned and are entangled with the middle cord 20c of the upper ladder cord 20 to prevent loosening when the blind is raised. Yes.

  The lower end of the front vertical cord 20a of the upper ladder cord 20 is connected to a middle portion in the vertical direction of the front vertical cord 22a of the lower ladder cord 22 by a connector 28, and the rear vertical cord of the upper ladder cord 20 The lower end of 20b is not connected to the lower ladder cord 22 below the lowermost slat of the upper slat group 24, and is a free end.

  The lower ends of the front vertical cord 22a and the rear vertical cord 22b of the lower ladder cord 22 are connected to a bottom rail 36 provided below the lowermost slat of the lower slat group 26, respectively.

  Here, when the clutch rings 30, 32 are in the neutral position, the middle cord 20c of the upper ladder cord 20 and the middle cord 22c of the lower ladder cord 22 are set to have different angles. Therefore, in the neutral position, the upper slat group 24 and the lower slat group 26 have different slat angles. In the illustrated example, the upper slat group 24 is horizontal and the lower slat group 26 is fully closed. .

  The pitch of the middle cord 20c of the upper ladder cord 20 and the middle cord 22c of the lower ladder cord 22 are the same, and the lower middle cord 20c of the upper ladder cord 20 and the uppermost cord of the lower ladder cord 22. The connection position is adjusted by the connector 28 so that the pitch between the middle cords 22c is the same.

  Further, the upper end of the lifting / lowering cord 40 is wound around the winding drum portion 19 which is provided so as to be rotatable integrally with the drum 18 and movable in the longitudinal direction of the head box 12 and is screwed into the drum receiver 17. The lifting / lowering cord 40 is connected so as to be unwound and passes through the slats of the upper slat group 24 and the lower slat group 26, and its lower end is connected to the bottom rail 36.

  The operation of the blind 10 configured as described above will be described with reference to FIGS. In these drawings, the number of slats is reduced for the sake of explanation. The state shown in FIG. 5A and FIG. 6 represents the neutral position of the clutch ring described above. In this state, the upper slat group 24 is horizontal and the lower slat group 26 is fully closed. Therefore, it can light from the upper part of the opening in which the blind 10 is set, and can shield the lower part.

  When the rotary shaft 14 is rotated forward by operating the operation unit 16 from this state, the clutch ring 30 or 32 rotates to cause relative rotation between the front vertical cord 20a and the rear vertical cord 20b of the upper ladder cord 20. Similarly, a relative displacement occurs between the front vertical cord 22a and the rear vertical cord 22b of the lower ladder cord 22, and the upper slat group 24 and the lower slat group 26 rotate together, and FIG. And as shown in FIG. 7, the upper slat group 24 inclines to the front side, it will be in a fully closed state, and the lower slat group 26 will become horizontal. Therefore, the upper part of the opening in which the blind 10 is set can be shielded, and the lighting and view from the lower part can be obtained. At this time, the front vertical cords 20a and 22a of the upper ladder cord 20 and the lower ladder cord 22 are displaced downward relative to the rear vertical cords 20b and 22b. The front vertical cord 22a attached to the bottom rail 36 is lowered by the inclination of the bottom rail 36, and the front vertical cord 20a of the upper ladder cord 20 connected by the connector 28 is also pulled by the front vertical cord 22a. Descend. By this action, not only the lower slat group 26 but also the upper slat group 24 can be reliably rotated to be in a fully closed state.

  Further, when the rotary shaft 14 is rotated rearward by operating the operation unit 16 from the neutral position, the rotation of the clutch rings 30 and 32 causes the front vertical cord 20a and the rear vertical cord 20b of the upper ladder cord 20 to rotate. A relative displacement occurs between the front vertical cord 22a and the rear vertical cord 22b of the lower ladder cord 22. The upper slat group 24 rotates. However, since the lower slat group 26 has already been rotated to the maximum extent, the rotation does not change, and the rear vertical cord 22b only loosens. As shown in FIGS. 5C and 8, both the upper slat group 24 and the lower slat group 26 are fully closed. Thus, both the upper and lower parts can be shielded. At this time, the rear vertical cords 20b and 22b of the upper ladder cord 20 and the lower ladder cord 22 are displaced downward relative to the front vertical cords 20a and 22a. Although the rear vertical cord 20b of the upper ladder cord 20 and the rear vertical cord 22b of the lower ladder cord 22 are not connected, the fact that the lower slat group 26 is fully closed indicates that the front vertical cord 22a and the rear This means that the width of the front and rear with respect to the side vertical cord 22b is small, and these are biased in the direction of decreasing also in the upper part, so that the inclination of the upper slat group 24 is promoted. By this action, not only the lower slat group 26 but also the upper slat group 24 can be reliably rotated to be in a fully closed state.

  At this time, the connector 28 is arranged such that the pitch between the lower middle cord 20c of the upper ladder cord 20 and the upper middle cord 22c of the lower ladder cord 22 is the same as the pitch of other portions. Since the connecting position is adjusted by the above, the pitch of the slats is uniform throughout, and all the slats can always have the same appearance as a normal blind having the same slat angle.

  As described above, each slat group 24, 26 can surely take a desired angle using the same rotating shaft 14, and can take different slat angles as shown in FIGS. 5 (a) and 5 (b). Thus, the same slat angle can be taken as shown in FIG. Since the clutch rings 30 and 32 that loosen and idle when rotated by a predetermined angle are used, the rotary shaft 14 can be rotated a plurality of times to wind and unwind the lifting cord 40 without changing the slat angle.

  However, the raising / lowering of the raising / lowering cord 40 can also be performed by the cord type shown in FIG. In FIG. 9, after the upper end side of the lifting / lowering cord 40 is introduced into the head box 12, the lifting / lowering cord 40 is further led out from the end of the head box 12 to be the lifting operation unit 41. In this case, although the upper ends of the upper ladder cord 20 and the lower ladder cord 22 are connected to the rotary shaft 14 via separate drums, the slat groups 24 and 26 are rotated using the same rotary shaft 14. It can be carried out. In this case, the clutch ring can be omitted, and the rotation range of the rotating shaft 14 is preferably restricted to the predetermined angle range.

It is a front view of the blind concerning embodiment of this invention. It is a side view of the blind concerning embodiment of this invention. It is sectional drawing seen along the 3-3 line of FIG. It is explanatory drawing showing distribution of the upper ladder cord and the lower ladder cord which expressed the clutch ring for upper parts and the lower parts in the expansion | deployment state. It is explanatory drawing showing the relationship between a clutch ring and a slat. It is a perspective view for explanation when a clutch ring is in a neutral position. It is a perspective view for explanation in a state where the clutch ring is rotated forward. It is a perspective view for explanation in the state where the clutch ring was rotated to the rear side. It is a front view of the blind concerning other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Blind 12 Head box 14 Rotating shaft 18 Drum 20 Upper ladder cord 22 Lower ladder cord 20a Front vertical cord 20b Rear vertical cord 22a Front vertical cord 22b Rear vertical cord 24 Upper slat group 26 Lower slat group 30 Clutch ring 32 Clutch ring

Claims (5)

A rotary shaft that is disposed in the head box (12) and that supports one end of a ladder cord that supports a number of slat rows in an aligned state is driven to rotate, and the rotation of the rotary shaft causes the slat angle to pass through the ladder cord. In the blind with variable
A number of slat rows are composed of an upper slat group (24) and a lower slat group (26),
The ladder cord is composed of an upper ladder cord (20) for supporting the upper slat group (24) and a lower ladder cord (22) for supporting the lower slat group (26).
The upper end of the upper ladder cord (20) and the upper end of the lower ladder cord (22) are respectively rotated by the common rotation so that the slat angles of the upper slat group (24) and the lower slat group (26) can be different. Connected to the shaft (14) ,
Front and rear vertical cord of each ladder cord (20a, 20b, 22a, 22b ) at least one side of a portion of the part and the ladder cord under the upper ladder cord is connected blind characterized by Rukoto of.   A drum (18) is provided on the rotating shaft (14), and the drum (18) is integrally rotated only when the drum (18) is rotated at a predetermined angle or less, and when rotating above the predetermined angle, the drum (18) is rotated. The upper and lower ladder cords (20) and (22) are connected to different clutch rings (30 and 32). The blind according to claim 1.   Of the vertical cords (20a, 20b, 22a, 22b) before and after each ladder cord, the lower end of the upper ladder cord on one side and a part of the lower ladder cord are connected, and the lower end of the upper ladder cord on the other side The blind according to claim 1, wherein the blind is not connected to the lower ladder cord. When the upper slat group (24) and the lower slat group (26) take a slat angle inclined in the same direction, one of the front and rear vertical cords (20a, 20b, 22a, 22b) that descends relatively downward The blind according to claim 3, wherein the lower ladder cord of the upper ladder cord and the lower ladder cord of the vertical cord are not connected to each other. The upper ladder cord and the lower ladder cord have the same pitch between the lowermost slat of the upper slat group and the uppermost slat of the lower slat group as the pitch of the upper and lower slats supported by each ladder cord. The blind according to claim 3 or 4 , wherein the blinds are connected to each other.

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