JPH08210060A - Blind - Google Patents

Abstract

PURPOSE: To contrive adjustment of partial open angles by causing locking means to work on part of ladderlike support ropes to pull the support ropes upwards when the pulling ropes of a partial angle adjustment means are pulled. CONSTITUTION: Each of the pulling ropes 7a of a partial angle adjustment means has a plurality of locking means 7b which can be engaged with lock rings 8 provided at part of the ladderlike support ropes 2 of an overall angle adjustment means while being spaced appropriately. By turning a control rod either right or left, the pulling ropes 7a are raised or lowered via a control mechanism in a headbox and vary the positions of the ladderlike support ropes 2 that engage with the locking means 7b, so that the angles by which slats 3 supported by the ladderlike ropes 2 open and close are partially varied. The blind is lowered by a lift means with the slats 3 opened simultaneously by use of the overall angle adjustment means, and when the pulling ropes 7a are pulled upward by use of the partial angle adjustment means, only the ladderlike support ropes 2 that can be engaged with the locking means 7b move and vary the angles by which the slats 3 therebelow open and close, so that only the upper part opens while the lower half is kept closed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blind which is attached mainly to a window of an office building so that the outside can be seen from the inside but the inside cannot be seen from the outside, and the lighting can be achieved.

[0002]

2. Description of the Related Art Conventionally, as a blind of this type, at least a pair of ladder-shaped supporting ropes vertically support a plurality of blades in a horizontal state, and elevating means acting on these blades raises and lowers each blade. In addition, it is known that the whole angle adjusting means acting on the ladder-like support ropes can uniformly change the angle of each blade lowered to adjust the lighting.

However, this conventionally known blind is
Since the angles of the blades are adjusted all at once, it is inconvenient because, for example, it is not possible to block the field of view of the lower side of the blind and then try to illuminate it from the upper side or make the outside visible from the upper side.

[0004]

Actually, such a demand is strong, and for this reason, a device has been developed in which the opening and closing angles of a plurality of blades can be independently adjusted, but the structure is complicated. Or, there is a problem in operability, so it has not been popularized yet.

An object of the present invention is to provide a blind in which the opening and closing angles of a plurality of blades can be independently adjusted only partially by means having a simple structure and good operability.

[0006]

In order to achieve the above-mentioned object, the present invention acts on at least a pair of ladder-like support ropes to vertically support a plurality of blades in a horizontal state so that the blades are vertically stacked. A blind configured to raise and lower these blades by means of the raising and lowering means, and uniformly change the angle of each blade lowered by the whole angle adjusting means acting on the ladder-like support rope to adjust lighting. A tow rope having a single or a plurality of locking means provided with a partial angle adjusting means acting on the ladder-like support rope and provided with the partial angle adjusting means at appropriate intervals,
The tow line is formed, and the locking means and a part of the ladder-like support line can be engaged with each other.

In this case, according to the present invention, the portion for engaging the locking means is made a part of each vane, the position of the locking means of the towing line is movable, or the locking means or the towing line is provided. It can be separable.

[0008]

According to the first aspect of the present invention, the blind is lowered by using the elevating means, and the vanes may be closed or opened by the whole angle adjusting means. When the tow rope is towed by the tow means, the locking means partially acts on the ladder-like support rope and pulls it upward, so that only the vanes supported by the pulled portion of this ladder-like support rope. The opening and closing angle of the blade changes so that it can be partially opened when the entire blade is closed and partially closed when the entire blade is open.

According to the second aspect, only the blade engaged with the locking means is directly moved partially through the partial angle adjusting means to be opened and closed.

According to the third aspect of the present invention, by changing the locking position for the ladder-shaped support rope and the blade by the locking means,
It will be possible to adjust the partial opening and closing angle of the blade.

According to the present invention, the opening / closing angle adjustment for the blade can be more partially selected.

[0012]

The drawings show an embodiment of the invention. 1 to 3, reference numeral 1 denotes a head box, in which various operating means to be described later are housed, but a specific configuration thereof is a publicly known technique and therefore omitted. Reference numeral 2 is a ladder-shaped support cable that is composed of two vertical ropes 2a and 2b and a horizontal rope 2c that constitute the overall angle adjusting means 4. The illustrated one is a pair, but the number provided is not limited. A plurality of blades 3 are supported on the horizontal rope 2c of the ladder-shaped support rope 2 in a horizontal state in a vertically overlapping manner.

Reference numeral 4a denotes an operating rod which constitutes an overall angle adjusting means 4 for adjusting the angle of each blade 3, and is mounted in the head box 1 by pinching it with a finger and rotating it in either the left or right direction. The vertical ropes 2a, 2b of the ladder-shaped support rope 2 are alternately raised in accordance with the rotation direction to change the angle of the horizontal rope 2c through an operation mechanism (not shown) having a well-known structure, thereby supporting. The opening / closing angle of each blade 3 is adjusted all at once.

Reference numeral 5a denotes an elevating rope of the elevating means 5, one of which is a vertical rope 2 of a ladder-like supporting rope 2 as shown in FIG.
It is hung from the head box 1 while loosely inserting the space between a and 2b into the insertion hole 3a formed in each blade 3, and the other is fixed to the bottom rail 6. The other of the hoisting cable 5a is led out from one side portion of the head box 1 through an operation mechanism (not shown) having a known structure mounted in the head box 1 and hangs downward.

Reference numeral 7a denotes a tow line of the partial angle adjusting means 7, and in particular, as shown in FIG. 2, a latch provided partially on the ladder-like support line 2 of the whole angle adjusting means 4 at an appropriate interval. It has a plurality of locking means 7b that can be engaged with the wheel 8. Reference numeral 9 denotes its operating rod. By turning this operating rod 9 in either the left or right direction, the tow line 7a is raised and lowered via an operating mechanism (not shown) mounted in the head box 1, and locking means is provided. The position of the ladder-shaped support rope 2 engaging with 7b is changed, and the opening / closing angle of the blade 3 supported by the ladder-like support rope 2 is partially changed.

Since the operating mechanism of the partial angle adjusting means 7 may be the same as the operating mechanism of the whole angle adjusting means 4 having a known structure, the illustration thereof is omitted.

Then, the blind is lowered by using the elevating means 5, and the whole angle adjusting means 4 is moved as shown in FIGS. 1 and 3.
When the blades 3 are simultaneously opened by using the, and the pulling rope 7a is pulled upward by using the partial angle adjusting means 7, as shown in FIGS. 4 and 5, the locking means 7b is obtained. Only the ladder-shaped support ropes 2 that can be engaged with move the opening and closing angles of the blades 3 below this, and only the blades 3 in the upper part of the blind are open, but the lower half is Can be closed.

In the above description, an example in which the blades 3 are partially opened and then partially closed has been described. However, it is of course possible to partially open the blades 3 and open them partially. Is possible.

Further, in the above-mentioned embodiment, the pulling line 7a has been shown to partially act on only one longitudinal line 2a of the ladder-like support line 2, but it is shown in FIGS. 6 to 7. As described above, the two tow lines 10a of the partial angle adjusting means 10 are provided, and the locking means 10b attached to each of the tow lines 10a are provided on the longitudinal lines 11a and 11b of the ladder-like support line 11 on opposite sides thereof. When it is configured to be engageable with 11c, for example, the blinds can be lowered to open the respective blades 12 in the opposite direction from the closed state and only a part of the blades 12, that is, the lower side of the blinds can be opened.

8 to 9 show a partial angle adjusting means 13
This is an embodiment in which the locking means 13a is separable. With this construction, it is possible to change the opening / closing angle of only the intermediate portion of each blade 14, for example. In this embodiment, the part of the tow line 13b may be separable.

Further, although not shown in the drawings because it is a simple structure as another embodiment, it is conceivable that the blade itself is locked by the locking means, and the mounting position of the locking means itself with respect to the tow line is raised or lowered. It can be configured to be movable in a direction. The former one has the advantage that each operating mechanism in the headbox can be easily installed because the tow rope and the ladder-like support rope are not combined in one place.
The latter has the advantage that the partial opening / closing angle of each blade can be freely adjusted in the field.

[0022]

Since the present invention has been carried out as described above, the following effects can be obtained.

According to the first aspect of the present invention, with the blinds lowered, only the upper and lower portions of the blades are opened to collect light, and the outside can be observed from the opened portions, and then the closed portion is closed. Since the shaded part can be shielded from light so that it cannot be seen from the outside, there are various requirements for blinds that basically have a function of optically or visually blocking the inside and outside of a building. You can answer.

According to the second to fourth aspects, the position of the blade for partially changing the angle and the changing angle can be arbitrarily selected, which is more convenient.

[Brief description of drawings]

FIG. 1 is a perspective view of a blind embodying the present invention.

FIG. 2 is a partially enlarged view for explaining a main part of the present invention.

FIG. 3 is a side view for explaining the configuration of the present invention.

4 and 5 are side views for explaining the operation of the blind according to the present invention.

6 and 7 are side views for explaining another embodiment of the blind according to the present invention.

8 and 9 are side views for explaining still another embodiment of the blind according to the present invention.

[Explanation of symbols]

 2,11 Ladder support ropes 3,12,14 Blades 4 Overall angle adjusting means 5 Elevating means 5a Elevating ropes 7,10,13 Partial angle adjusting means 7a, 10a, 13b Traction ropes 7b, 10b, 13a Locking means

Claims (4)

[Claims] 1. At least a pair of ladder-shaped support ropes vertically support a plurality of blades in a horizontal state, and ascend and descend the blades by an elevating means acting on the blades. In a blind constructed so as to uniformly adjust the angle of each blade lowered by the whole angle adjusting means acting on the ladder-like support rope, a partial angle adjusting means acting on the ladder-like support rope is provided. The partial angle adjusting means is composed of a tow cable having a single or a plurality of locking means provided at appropriate intervals, and the locking means and a part of the ladder-like supporting cable can be engaged with each other. Characterized in that
blind. 2. The blind according to claim 1, wherein the portion to be engaged with the locking means is a part of each blade. 3. The blind according to claim 1, wherein the position of the locking means of the tow line is movable. 4. The blind according to claim 1, wherein the locking means or the tow line is separable.