TW201638454A - Horizontal shade - Google Patents

Abstract

Provided is a horizontal shade with which it is possible to increase the opening ratio thereof. According to the present invention, there is provided a horizontal shade configured so that a plurality of slats are turnably supported by a slat support cord hanging down from a head box, and a bottom rail is supported in a raisable and lowerable manner by a raising/lowering tape hanging down from the head box, wherein the raising/lowering tape is arranged so that the main surface of the raising/lowering tape is substantially perpendicular to the longitudinal direction of the slats in at least part of the tape between the head box and the bottom rail.

Description

Horizontal blinds

The present invention relates to a horizontal blind for lifting a lower beam using a lifting belt.

The horizontal louver is generally configured to wind up or unwind a rope-like lifting cord in a spiral shape to a winding cone rotatably supported in the top box, thereby lowering the lower beam (For example, refer to Patent Document 1).

Since the lifting cord is spirally wound around the winding cone, the longer the lifting cord, the more it is necessary to increase the diameter of the winding cone or increase the total length of the winding cone. Therefore, the overall height of the horizontal louver is increased, or the width of the horizontal louver is narrowed, and at this time, it is difficult to secure a space in which the winding cone is housed in the top box, and the top box is enlarged.

In this case, a thin and wide belt-shaped lifting belt is used instead of the rope-shaped lifting rope, and the lower beam is raised and lowered (see, for example, Patent Document 2). Since the lifting belt is thin, it can be wound on the winding drum in an overlapping manner. The space required to set the winding drum is also smaller than the winding cone. Therefore, by using a lifting belt instead of the lifting cord, there is an advantage that the top box can be miniaturized.

[Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2007-177584

[Patent Document 2] Japanese Patent Laid-Open No. Hei 4-080491

Further, in the case of the horizontal blind, when it is desired to allow external light to enter the room, the blade is rotated in the opening direction to reduce the inclination angle of the blade. Thereby, the external light is incident into the room from the opening between the blades adjacent in the vertical direction. The larger the opening, the more the external light can be irradiated, which is preferable.

In the configuration of Patent Document 2, since the main surface of the elevating belt is disposed substantially parallel to the window surface, the elevating belt blocks the external light, and the opening area between the adjacent vanes actually becomes small.

The present invention has been made in view of such circumstances, and provides a horizontal louver capable of increasing an aperture ratio.

According to the present invention, there is provided a horizontal louver configured to rotatably support a plurality of blades by a blade supporting rope suspended from a top box, and to be lifted and lowered by a lifting belt suspended from the top box The lower beam is disposed; the lifting belt is disposed at least a portion between the top box and the lower beam, and a main surface of the lifting belt is substantially perpendicular to a longitudinal direction of the blade.

In the present invention, since at least a part of the top box and the lower beam are disposed, the main surface of the lifting belt is substantially perpendicular to the longitudinal direction of the blade, so when viewed from the inside of the room, the projected area ratio of the lifting belt of the horizontal louver The prior art is small, and accordingly, the aperture ratio is large, and the lifting belt is less conspicuous, so the appearance is improved.

Hereinafter, various embodiments of the present invention will be exemplified. The various embodiments shown below can be combined with each other.

Preferably, the lifting belt is inserted into an insertion hole or a slit formed in the blade, and the insertion hole or the slit is formed such that a longitudinal direction of the insertion hole or the slit is substantially perpendicular to a longitudinal direction of the blade.

Preferably, the blade presser for fixing the blade support line to the blade is provided, and the lift belt is inserted into an insertion hole or a slit formed in the blade presser, and the insertion hole or the slit is formed as the insertion hole or the slit. The longitudinal direction is substantially perpendicular to the longitudinal direction of the blade.

Preferably, the blade supporting rope includes a pair of vertical lines, a horizontal line disposed between the pair of vertical lines, and an annular portion protruding in a direction opposite to the horizontal line, and the lifting belt is inserted into the annular portion.

Preferably, the winding drum is provided to be rotatablely supported in the top box and capable of winding and unwinding the lifting belt, and the winding drum is disposed such that a rotation axis of the winding drum is substantially parallel to a longitudinal direction of the blade And configured to be in a state in which the lifting belt is twisted in a position immediately before the winding drum The lifting belt is wound around the winding drum.

Preferably, the winding drum is rotatably supported in the top box and capable of winding and unwinding the lifting belt, and the winding drum is disposed such that a rotating shaft of the winding drum is substantially perpendicular to a longitudinal direction of the blade .

Preferably, three or more lifting belts are provided separately from the longitudinal direction of the blade, and at least one of the two lifting belts other than the two ends is disposed at least a portion between the top box and the lower beam, and the lifting The main surface of the belt is substantially perpendicular to the longitudinal direction of the blade.

1‧‧‧ horizontal blinds

3‧‧‧ top box

5‧‧‧Ladder rope

7‧‧‧ leaves

9‧‧‧Lower beam

11‧‧‧ Lifting belt

13‧‧‧Control rope

17‧‧‧ Pulley housing

19‧‧‧ drum unit

21‧‧‧Support parts

23‧‧‧Drive shaft

25‧‧‧Flipping drum

27‧‧‧Like rope suspension parts

29‧‧‧Wind drum

31‧‧‧Leaves

FIG. 1 is a perspective view showing a configuration of a horizontal blind 1 according to a first embodiment of the present invention.

Fig. 2 is an enlarged perspective view showing a configuration in the vicinity of the drum unit 19 of Fig. 1 .

Fig. 3 (a) is a plan view of Fig. 1 when the lifting belt 11 is inserted into the insertion hole 7a of the blade 7 from the upper side of the blade 7, and Fig. 3 (b) is a schematic front view of the horizontal blind 1 of Fig. 1. Figure.

4(a) is a perspective view showing a modified example in which the insertion hole 7a is provided at a position on the side of the blade 7, and FIG. 4(b) is a perspective view showing a modification in which the lifting belt 11 is inserted in the slit 7b instead of the insertion hole 7a. 4(c) is a plan view of FIG. 4(b).

Fig. 5 (a) is a perspective view showing a modified example in which the lifting belt 11 is inserted into the insertion hole 31b of the protruding piece 31a provided in the blade presser 31, and Fig. 5(b) is a step in which the lifting belt 11 is inserted. A perspective view of a modification of the annular portion 5c of the vertical line 5a of the string 5, and Fig. 5(c) is a plan view of Fig. 5(b).

FIG. 6 is an enlarged perspective view showing a configuration of the vicinity of the winding drum 29 of the horizontal blind 1 according to the second embodiment of the present invention.

FIG. 7 is a perspective view showing a configuration of a horizontal blind 1 according to a third embodiment of the present invention.

Fig. 8 (a) is a plan view of Fig. 7 when the elevating belt 11 is inserted into the insertion hole 7a of the vane 7 from the upper side of the vane 7, and Fig. 8 (b) is the AA cross section in Fig. 8 (a) Figure.

Hereinafter, various embodiments of the present invention will be described using the drawings. The various embodiments shown below can be combined with each other.

1. First embodiment

The horizontal blind 1 of the first embodiment of the present invention will be described with reference to Figs. 1 to 3 .

As shown in FIG. 1, the horizontal blind 1 includes a top box 3, a ladder cord 5 suspended from the top box 3, and a lifting belt 11. As shown in Fig. 2, the ladder cord 5 is provided with a plurality of horizontal lines 5b between the pair of vertical lines 5a. Each horizontal line 5b supports the blade 7. The ladder cord 5 is fixed to the two blades 7 by the blade presser 31 from above. The ladder cord 5 corresponds to the "blade support rope" in the patent application. The "blade support rope" can support and rotate the blade 7, and the configuration thereof is not limited. For example, it can be configured to have two vertical lines separated from each other, one vertical line is attached to one side of the blade, and the other vertical line is mounted. On the other side of the blade. The lifting belt 11 is a thin and wide belt shape. The value of the width/thickness ratio of the lifting belt 11 is, for example, 5 or more, and preferably 10 or more. The upper limit of the ratio is not particularly limited and is, for example, 20, 30, 40, 50 or 100.

A drum unit 19 is disposed in the top box 3. As shown in FIG. 2, the drum unit 19 is fixed to the top box 3 The support member 21 and the inverting drum 25 and the winding drum 29 rotatably supported by the support member 21. The reversing drum 25 and the winding drum 29 are inserted with a cross-section non-circular drive shaft 23 that rotates in accordance with the manipulation of the manipulation cord 13, and the reversing drum 25 and the winding drum 29 rotate as the drive shaft 23 rotates. The drive shaft 23 is disposed substantially parallel to the longitudinal direction LS of the blade 7. The steering force applied to the manipulation cord 13 is converted into rotation of the drive shaft 23 by the steering pulley and the shift gear disposed in the pulley housing 17. In the electric louver, the drive shaft 23 rotates in accordance with the rotation of the electric motor.

A ladder rope suspension member 27 composed of a metal ring is attached to the inverting drum 25. The ladder rope suspension member 27 is mounted on the inverting drum 25 by virtue of its elastic force. One end of the pair of vertical wires 5a of the ladder cord 5 is attached to the ladder rope suspension member 27, and as the drive shaft 23 rotates, the ladder rope suspension member 27 rotates together with the inversion drum 25, whereby the inclination angle of the vane 7 changes. The ladder rope suspension member 27 is rotated until the blade 7 is substantially perpendicular as the turning drum 25 rotates, and thereafter the inverting drum 25 is idling with respect to the ladder rope suspension member 27. The other end of the pair of vertical wires 5a of the ladder cord 5 is attached to the lower beam 9.

One end of the lifting belt 11 is attached to the lower beam 9, and the other end is attached to the winding drum 29. By the rotation of the winding drum 29 with the rotation of the drive shaft 23, the lifting belt 11 is wound or unwound with respect to the winding drum 29, so that the lower beam 9 ascends and descends.

An elongated insertion hole 7a for inserting the lifting belt 11 is provided in each of the blades 7. As shown in FIG. 3(a), the insertion hole 7a is formed such that the longitudinal direction L1 of the insertion hole 7a is substantially perpendicular to the longitudinal direction LS of the blade 7. Here, the "longitudinal direction L1 is substantially perpendicular to the longitudinal direction LS" means, for example, that the longitudinal direction L1 of the insertion hole 7a is 60 with respect to the longitudinal direction LS of the blade 7 ~120 degrees. The angle α is preferably from 70 to 110 degrees, more preferably from 80 to 100 degrees, still more preferably from 85 to 95 degrees.

The insertion hole 7a is configured to prevent the movement of the elevating belt 11 in the vertical direction (the direction of the arrow H in FIG. 2) in the insertion hole 7a, and the rotation of the main surface 11a of the elevating belt 11 in the insertion hole 7a. (Rotation of the direction in which the angle β is changed as shown in Fig. 3(a)) is limited to a predetermined angle range. In the insertion hole 7a, the main surface 11a of the elevating belt 11 is rotatable, and the main surface 11a of the elevating belt 11 is parallel to the longitudinal direction L1 of the insertion hole 7a as shown in Fig. 3(a). The reference is preferably within ±30 degrees, more preferably within ±20 degrees, and even more preferably within 10 degrees. The length a of the insertion hole 7a in the longitudinal direction is preferably set such that the lifting belt 11 inserted through the insertion hole 7a when the blade 7 is rotated does not interfere with the size of the blade 7. The length b of the insertion hole 7a in the short-side direction (the direction perpendicular to the longitudinal direction) is preferably set to be larger than the thickness of the lifting belt 11 (preferably 2 to 40 times larger, further preferably 4 to 20 times larger) and in the lifting belt 11 1/2 of the width (preferably 1/3, 1/4 or 1/5) or less.

Thus, the longitudinal direction L1 of the insertion hole 7a is substantially perpendicular to the longitudinal direction LS of the blade 7, and the rotation of the main surface 11a of the lifting belt 11 in the insertion hole 7a is restricted, so that the lifting belt 11 is lifted and lowered. The main surface 11a of the 11 is held in the insertion hole 7a so as to be substantially perpendicular to the longitudinal direction LS of the blade 7. Here, the "main surface 11a is substantially perpendicular to the longitudinal direction LS" means that the angle ? of the main surface 11a of the lifting belt 11 with respect to the longitudinal direction LS of the blade 7 is 60 to 120 degrees. The angle β is preferably 70 to 110 degrees, more preferably 80 to 100 degrees, still more preferably 85 to 95 degrees.

As shown in FIG. 3(b), when the main surface 11a of the elevating belt 11 is substantially perpendicular to the longitudinal direction LS of the blade 7, the projected area of the elevating belt 11 when the elevating belt 11 is viewed from the inside of the room is extremely small, and thus In the prior art, as compared with the case where the main surface 11a of the elevating belt 11 is parallel to the longitudinal direction LS of the vane 7, the aperture ratio is greatly increased, and the elevating belt 11 is not conspicuous, so that the appearance is improved.

Further, in the present embodiment, the rotation axis of the winding drum 29 is coaxial with the drive shaft 23, and the drive shaft 23 is substantially parallel to the longitudinal direction LS of the blade 7, so that the rotation axis of the winding drum 29 is also long with the blade 7. The side direction LS is substantially parallel. On the other hand, as described above, in the present embodiment, since the main surface 11a is substantially perpendicular to the longitudinal direction LS, as shown in FIG. 2, the winding belt 11 is twisted at the twisted portion T immediately before the winding drum 29. The state is wound around the winding drum 29. In the upper portion of the twisted portion T, the main surface 11a is not substantially perpendicular to the longitudinal direction LS. In the present embodiment, the main surface 11a is substantially perpendicular to the longitudinal direction LS at the lower portion of the twisted portion T. In order to minimize the portion of the upper side of the twisted portion T, the twisted portion T is preferably disposed between the uppermost blade 7 and the winding drum 29.

This embodiment can also be implemented as follows.

‧ The shape of the insertion hole 7a is an elongated shape, and is not particularly limited, and may be, for example, an elliptical shape. In the above embodiment, the insertion hole 7a is provided substantially at the center in the front-rear direction of the blade 7, but as shown in Fig. 4(a), a position shifted in the front-rear direction can be provided.

‧ As shown in FIGS. 4(b) to 4(c), the lifting belt 11 can be inserted into the elongated slit 7b instead of the insertion hole 7a. As shown in FIG. 4(c), the slit 7b is formed such that the longitudinal direction L2 of the slit 7b is substantially perpendicular to the longitudinal direction LS of the blade 7. "The longitudinal direction L2 is substantially perpendicular to the longitudinal direction LS The meaning of "straight" is the same as "the longitudinal direction L1 is substantially perpendicular to the longitudinal direction LS." The length a of the slit 7b in the longitudinal direction is a depth at which the lifting belt 11 can be held in the slit 7b, and is preferably a lifting belt. 11 is 1/2 or more of the width. The description of the length b of the slit 7b in the short-side direction is the same as that of the insertion hole 7a.

‧ As shown in FIG. 5( a ), the insertion hole 31 b or the slit may be provided in the protruding piece 31 a provided on the blade press 31 instead of forming the insertion hole or the slit in the blade 7 . The description of the insertion hole or the slit of the blade presser 31 is the same as the insertion hole or the slit of the blade 7.

‧ As shown in Figs. 5(b) to 5(c), the annular portion 5c can be formed so that the vertical line 5a of the ladder cord 5 protrudes in the opposite direction to the horizontal line 5b, and the lifting belt 11 can be inserted into the ring. Shape 5c. By restricting the rotation of the main surface 11a of the elevating belt 11 in the annular portion 5c, the main surface 11a of the elevating belt 11 can be held substantially perpendicular to the longitudinal direction LS of the vane 7. The annular portion 5c is preferably formed such that its circumference is slightly larger than twice the width of the lifting belt 11 (for example, 2.1 to 3 times).

2. Second embodiment

A second embodiment of the present invention will be described with reference to Fig. 6 . This embodiment is similar to the first embodiment, and the main difference is that the direction of the rotation axis of the winding drum 29 is different from that of the first embodiment. Hereinafter, the description will be made around the difference points.

In the first embodiment, since the rotation axis of the winding drum 29 is coaxial with the drive shaft 23, the rotation of the drive shaft 23 can be transmitted to the winding drum 29 without using the conversion gear. Therefore, the configuration is simple. On the other hand, in the first embodiment, as shown in FIG. 2, the twisted portion T is provided in front of the winding drum 29, but it is not preferable to dispose the twisted portion T at a position visible to the user. The position distorting portion T that is invisible to the user is not easy to construct.

In the present embodiment, as shown in FIG. 6, the winding drum 29 is disposed such that the rotating shaft 29a of the winding drum 29 is substantially perpendicular to the longitudinal direction LS of the blade 7. According to such a configuration, the lifting belt 11 can be wound around the winding drum 29 without twisting the lifting belt 11, so that the problem caused by the twisted portion T can be solved. The rotation of the drive shaft 23 can be transmitted to the winding drum 29 using a conversion gear (not shown) such as a bevel gear.

3. Third embodiment

A third embodiment of the present invention will be described with reference to Figs. 7 to 8 . This embodiment is similar to the first embodiment, and the main difference is that the arrangement of the lifting belt 11 is different from that of the first embodiment. Hereinafter, the description will be made around the difference points.

In the present embodiment, the center lifting belt 11 is disposed such that the main surface of the lifting belt 11 is substantially perpendicular to the longitudinal direction LS among the three lifting belts 11 that are disposed apart from the longitudinal direction LS of the blade 7. The two lifting belts 11 at both ends are arranged such that the main surface of the lifting belt 11 is substantially parallel to the longitudinal direction LS.

In the present embodiment, the center insertion hole 7a is formed such that its longitudinal direction L1 is substantially perpendicular to the longitudinal direction LS, and the insertion holes 7a at both ends are formed such that the longitudinal direction L1 is substantially parallel to the longitudinal direction LS. By inserting the lifting belt 11 into the insertion holes 7a, the main surface of the lifting belt 11 at both ends can be substantially parallel to the longitudinal direction LS, and the main surface of the central lifting belt 11 is substantially perpendicular to the longitudinal direction LS. status.

Since the insertion holes 7a at both ends are formed near the edge of the blade 7, and the length c of the blade 7 in the width direction W (the direction perpendicular to the longitudinal direction LS) is short, as shown in FIG. 8(b), the blade is made When the 7 is in the fully closed state, the insertion hole 7a is shielded by the blade 7 in the near direction, and the external light S is prevented from entering the room through the insertion hole 7a, so that the light leakage in the fully closed state is reduced.

As described above, in the present embodiment, the center lifting belt 11 which is relatively conspicuous is arranged such that the main surface is substantially perpendicular to the longitudinal direction LS, thereby improving the aperture ratio and the appearance, and the lifting belts 11 at both ends are passed through The light leakage of the insertion hole 7a in the closed state is reduced.

Here, the case where the lifting belt 11 is three is exemplified. When the lifting belt 11 is four or more, at least one lifting belt other than the two ends is disposed so that the main surface of the lifting belt 11 is relatively long. The side direction LS is substantially perpendicular, and the same effect as described above can be obtained.

1‧‧‧ horizontal blinds

3‧‧‧ top box

5‧‧‧Ladder rope

7‧‧‧ leaves

9‧‧‧Lower beam

11‧‧‧ Lifting belt

13‧‧‧Control rope

17‧‧‧ Pulley housing

19‧‧‧ drum unit

31‧‧‧Leaves

Claims (7)

A horizontal louver, characterized in that a plurality of blades are rotatably supported by a blade support rope suspended from a top box, and a lower beam is supported by a lifting belt suspended from the top box, the lifting belt The main surface of the lifting belt is disposed substantially perpendicular to a longitudinal direction of the blade at least a portion between the top box and the lower beam. The horizontal louver according to claim 1, wherein the lifting belt is inserted into an insertion hole or a slit formed in the blade, and the insertion hole or the slit is formed as the insertion hole or the slit. The longitudinal direction is substantially perpendicular to the longitudinal direction of the blade. The horizontal louver according to claim 1 or 2, further comprising: a blade presser for fixing the blade support rope to the blade, wherein the lift belt is inserted through a plug-in formed in the blade presser a hole or a slit formed such that a longitudinal direction of the insertion hole or the slit is substantially perpendicular to a longitudinal direction of the blade. The horizontal louver according to any one of claims 1 to 3, wherein the blade support rope includes a pair of vertical lines, a horizontal line disposed between the vertical lines, and a horizontal line An annular portion protruding in the opposite direction, the lifting belt being inserted through the annular portion. The horizontal blind according to any one of claims 1 to 4, further comprising a winding drum rotatably supported in the top box and capable of winding and unwinding the lifting belt, The winding drum is disposed such that a rotation axis of the winding drum is substantially parallel to a longitudinal direction of the blade, and is configured to rotate the lifting belt in a state where the lifting belt is twisted at a position immediately before the winding drum Winding on the winding drum. The horizontal blind according to any one of claims 1 to 4, further comprising a winding drum rotatably supported in the top box and capable of winding and unwinding the lifting belt, The winding drum is disposed such that a rotation axis of the winding drum is substantially perpendicular to a longitudinal direction of the blade. The horizontal louver according to any one of claims 1 to 6, wherein three or more of the lifting belts are provided separately from the longitudinal direction of the blade, and at least two of the two ends are at least One lifting belt is disposed at least a portion between the top box and the lower beam, and a main surface of the lifting belt is substantially perpendicular to a longitudinal direction of the blade.