JP2004278075A - Blind - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blind positively exhibiting shielding performance and airtightness. <P>SOLUTION: Two upper and lower slats 14, 15 are supported in layers to each middle stage cord 12c of a ladder cord 12. The upper and lower slats 14, 15 have different curvature, and the contact area of the slats 14, 15 is set small. Front and rear vertical cords 12a, 12b of the ladder cord 12 are relatively moved up and down to make the inclination of the slats 14, 15 variable, and when the slats 14, 15 are inclined, one slat 14 can smoothly slide down relative to the other slat 15. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a blind, and more particularly to a blind having high shielding or airtightness.
[0002]
[Prior art]
Conventionally, as this kind of blind, a plurality of slats are supported in an aligned state by a ladder cord hanging from a head box, and the inclination of the slat is made variable by vertically moving the vertical cords before and after the ladder cord relatively. In the blind, two slats are superimposed and supported on each ladder cord, and a notch is formed in a portion of one slat in contact with the ladder cord, so that when one slat is tilted, one slat with respect to the other slat. There is known a device that slides down (see Patent Document 1).
[0003]
In the technique disclosed in Patent Document 1, two slats are shifted up and down, and the lower edge of one slat that slides down in each step comes into contact with the surface of the slat in the immediately lower step to form a gap between the slats. Can be completely closed.
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. Sho 62-36946 (column 1, lines 2 to 12, FIG. 3 to FIG. 5)
[0005]
[Problems to be solved by the invention]
However, in the prior art described above, two slats of exactly the same shape are supported in an overlapping manner on each middle cord. Therefore, there is a problem that two slats are completely adhered or adhered to each other, and even if the slats are tilted, one slat does not slide down on the other slat and cannot be completely shielded.
[0006]
The present invention has been made in view of such a problem, and an object of the present invention is to provide a blind that can reliably exhibit a shielding property or an airtightness.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is characterized in that a plurality of slats are supported in a vertically aligned state by a ladder cord, and the vertical cords before and after the ladder cord relatively move up and down. In the blind to change the inclination of the,
The upper and lower two slats are supported on each middle cord of the ladder cord in an overlapping manner, and the upper and lower slats have different curvatures.
[0008]
Because the upper and lower slats have different curvatures, when the upper and lower slats are not inclined, there is less contact between the upper and lower slats and a gap can be formed between the two, creating a gap between the two. It is possible to reduce adhesion force or suction force such as electrostatic force or suction force due to oil or moisture. For this reason, when the slats are inclined, one slat can smoothly slide down on the other slat.
[0009]
According to a second aspect of the present invention, in the first aspect, a radius of curvature of an upper slat of the upper and lower slats is larger than a radius of curvature of a lower slat.
[0010]
When the upper slat and the lower slat are overlapped without inclination, only the center portion thereof comes into contact, and both sides thereof are separated from the center portion. This can prevent the slats from sticking or adsorbing to each other, and one slat can smoothly slide down on the other slat.
[0011]
According to a third aspect of the present invention, there is provided a blind in which a plurality of slats are supported in a vertically aligned state by a ladder cord, and the vertical cords before and after the ladder cord relatively move up and down, thereby making the inclination of the slat variable.
Upper and lower slats are supported on each middle cord of the ladder cord in an overlapping manner, and at least one of the lower surface of the upper slat and the upper surface of the lower slat is a non-smooth surface.
[0012]
Since at least one of the lower surface of the upper slat and the upper surface of the lower slat is a non-smooth surface, when the upper and lower slats are not inclined, the contact between the upper and lower slats is reduced, and A gap can be formed between the two, and an adhesion force or an adsorption force such as a suction force due to an electrostatic force or oil or moisture generated between the two can be reduced. Therefore, when the slats are inclined, one slat can smoothly slide down on the other slat.
[0013]
According to a fourth aspect of the present invention, in any one of the first to third aspects, a slit extending from one edge side of one of the upper and lower slats is formed, and the slat is inclined. Sometimes, one vertical cord or middle cord of the ladder cord is inserted into the slit, and one slat slides down with respect to the other slat.
[0014]
When the slat is tilted, one slat slides down with respect to the other slat and one vertical cord or middle cord of the ladder cord is inserted into the slit of one slat. As described above, the width of the slat can be substantially increased, and the shielding property or the sealing property can be improved.
[0015]
The invention according to claim 5 is characterized in that, when the slat according to claim 4 is inclined at the maximum in one direction, the lower edge of one of the slats of each step comes into contact with the surface of the slat of the step immediately below it. I do. Thereby, in a state where the slats are inclined at the maximum, no gap is formed between the upper slat and the lower slat, and the gap can be completely closed, so that the shielding property and the airtightness are further improved. Can be.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
FIG. 1 is an overall view showing a blind according to an embodiment of the present invention. In the figure, reference numeral 10 denotes a head box, and a plurality of ladder cords 12 are suspended from the head box 10 in the longitudinal direction thereof.
[0018]
The upper end of the ladder cord 12 is connected to a slat tilting device provided in the headbox 10. Although the slat tilting device is not shown, for example, a shaft that extends in the longitudinal direction in the head box 10 and is rotatably supported is connected to the upper end of the ladder cord 12 so as to be able to be wound and unwound. It can be composed of a drum and the like. The shaft can be connected to an operation rod 20 hanging from the headbox 10 via a rotation transmission mechanism.
[0019]
Each of the ladder cords 12 hanging from the head box 10 is provided with a plurality of vertical cords 12a and 12b extending in the vertical direction and a plurality of middle ladder cords 12c provided in the vertical direction so as to connect the front and rear vertical cords 12a and 12b. And the lower end thereof is connected to the bottom rail 18.
[0020]
On each middle cord 12c of the ladder cord 12, two slats 14, 15 are superposed and placed, respectively, whereby a plurality of slats 14, 15, 14, 15, 15 are provided for every two slats 14, 15 respectively. Are supported in a vertically aligned state. As shown in FIG. 4, the slats 14 and 15 are formed with elevating cord insertion holes 14a and 15a at appropriate positions separated from each other in the longitudinal direction. The lifting code insertion hole 14a is set to be longer than the lifting code insertion hole 15a. Further, only the upper slat 14 is provided with a slit 14b extending in the front-rear direction from a front edge side thereof at a position corresponding to the ladder cord 12, and the slit 14b has a middle cord 12c and / or a front side ladder cord 12 formed therein. Can be inserted.
[0021]
A lifting cord 16 is inserted through the lifting cord insertion holes 14a, 15a of the slats 14, 15, one end of the lifting cord 16 is connected to a bottom rail 18, and the other end of the lifting cord 16 is inserted into the head box 10. Has been introduced. By raising and lowering the lifting cord 16, the bottom rail 18 is raised and lowered, so that every two slats 14 and 15 that are vertically spaced apart from each other can be sequentially raised and lowered. .
[0022]
The upper slat 14 and the lower slat 15 have a C-shape when viewed from the side, similar to a normal blind slat. However, the curvature of the C-shape is not the same, and FIG. As shown, the upper slat 14 has a larger radius of curvature than the lower slat 15, and although the upper slat 14 and the lower slat 15 are overlapped, the slat 14 shown in FIG. In the horizontal state in which the slats 15 are not inclined, only the center portions of the upper slats 14 and the lower slats 15 are actually in contact with each other. Have been.
[0023]
In the blind constructed as described above, when the operating rod 20 is operated to tilt the slat, the slat tilting device relatively moves the front vertical cord 12a and the rear vertical cord 12b of the ladder cord 12. I do. At this time, when the front vertical cord 12a is moved downward relative to the rear vertical cord 12b, the state shown in FIG. 3 is obtained, and the slats 14 and 15 are similarly moved because the middle cord 12c is inclined forward. Lean forward. At this time, since the middle cord 12c or the front vertical cord 12a enters the slit 14b formed in the upper slat 14, the upper slat 14 may move lower than the lower slat 15. As a result, the upper slats 14 slide down against the lower slats 15.
[0024]
At this time, only a part of the upper slats 14 and the lower slats 15 are in contact with each other, and an adhesion force such as an electrostatic force generated between the slats 14 and a suction force due to oil or moisture or the like. Since the attraction force is small, the upper slat 14 can move smoothly with respect to the lower slat 15.
[0025]
With the middle cord 12c of the rudder cord 12 inclined forward to the maximum and the slats 14, 15 inclined to the fully closed state, the front edge of the upper slat 14 is placed on the upper surface of the upper slat 14 of the immediately lower step. Because of the contact, no gap is formed between the upper slat and the lower slat, and the gap can be completely closed. Thus, the shielding property and the airtightness can be improved.
[0026]
As described above, in a state where the slats 14 and 15 are not inclined, there is almost no contact between the upper slat 14 and the lower slat 15 and there is a gap.・ Adsorption can be prevented.
[0027]
FIG. 5 shows another modification, in which the upper slat 14 and the lower slat 15 have the same curvature and the C-shape in the side view is substantially the same, instead of the upper slat 14. This is an example in which at least one surface of the lower surface 14 or the upper surface of the lower slat 15 is a non-smooth surface. Specifically, a plurality of ribs 14c are provided on the lower surface of the upper slat 14. Even in this case, only a part of the upper slats 14 and the lower slats 15 is in contact with each other when the slats 14 and 15 are not inclined. Can be prevented from sticking or adsorbing. Since the ribs 14c are mostly hidden by the slats 15, the appearance does not deteriorate.
[0028]
Similarly, instead of providing the rib 14c on the lower surface of the upper slat 14, or while providing the rib 14c on the lower surface of the upper slat 14, a rib 15c may be provided on the upper surface of the lower slat 15 (see FIG. 6). ).
[0029]
In the above embodiment, the example in which the slit 14b is formed in the upper slat 14 and the upper slat 14 slides down with respect to the lower slat 15 has been described. However, the present invention is not limited thereto. May be formed with a slit so that the lower slat 15 slides down with respect to the upper slat 14.
[0030]
【The invention's effect】
As described above, according to the present invention, when the upper and lower slats are not inclined, the upper and lower slats are less in contact with each other and a gap is formed between the two, so that the electrostatic force generated between the two slats or Adhesive force such as suction force by oil and moisture or adsorption force can be reduced. Therefore, when the slats are inclined, one slat can smoothly slide down on the other slat without the upper and lower slats sticking or adhering to each other, whereby the blind when the slat is inclined can be adjusted. The shielding property and the sealing property can be improved.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a blind according to an embodiment of the present invention.
FIG. 2 is a side view of a part of a blind according to an embodiment of the present invention, showing a state where a slat is not inclined.
FIG. 3 is a side view of a part of a blind according to an embodiment of the present invention, showing a fully closed state in which a slat is at a maximum inclination.
FIG. 4 is a partial plan view of each of two overlapping slats of a blind according to an embodiment of the present invention;
FIG. 5 is a side view of a part of a blind according to a modification of the present invention, showing a state where the slat is not inclined.
FIG. 6 is a side view of a part of a blind according to another modification of the present invention, showing a state where the slat is not inclined.
[Explanation of symbols]
12 Ladder cord 12a, 12b Vertical cord 12c Middle cord 14, 15 Slat 14b Slit

Claims (5)

A plurality of slats (14, 15) are supported by the ladder cord (12) in a vertically aligned state, and the vertical cords (12a, 12b) before and after the ladder cord (12) relatively move up and down. In the blind which makes the inclination of 14, 15) variable,
Upper and lower two slats (14, 15) are supported in an overlapping manner on each middle cord (12c) of the ladder cord (12), and the upper and lower slats (14, 15) have different curvatures. A blind characterized by the following. The blind according to claim 1, wherein the radius of curvature of the upper slat (14) is larger than the radius of curvature of the lower slat (15) among the upper and lower slats (14, 15). A plurality of slats (14, 15) are supported by the ladder cord (12) in a vertically aligned state, and the vertical cords (12a, 12b) before and after the ladder cord (12) relatively move up and down. In the blind which makes the inclination of 14, 15) variable,
Upper and lower two slats (14, 15) are supported by being superposed on each middle cord (12c) of the ladder cord (12), the lower surface of the upper slat (14) and the upper surface of the lower slat (15). Characterized in that at least one surface of the blind is a non-smooth surface. Of the upper and lower slats (14, 15), one of the slats (14) is formed with a slit (14b) extending from one edge thereof, and when the slat (14) is inclined, a ladder cord is formed in the slit (14b). 4. One of the claims 1 to 3, wherein one of the vertical cords (12a) or the middle cord (12c) of the (12) is inserted and one slat (14) slides down on the other slat (15). Or the blind according to item 1. The lower edge of one of the slats (14) of each step contacts the surface of the slat (14) of the step immediately below when the slats (14, 15) are maximally inclined in one direction. Item 6. A blind according to item 4.

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