Patent Publication Number: US-2015075726-A1

Title: Roman shade type blind cloth

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims under 35 U.S.C. §119(a) the benefit of Korean Patent Application No. 10-2012-0039218 filed on Apr. 16, 2012, Korean Patent Application No. 10-2012-0058441 filed on May 31, 2012 and Korean Patent Application No. 10-2012-0058442 filed on May 31, 2012, the entire contents of which are incorporated herein by reference. 
     TECHNICAL FIELD 
     The present invention relates to a Roman shade type blind in which loops are formed consecutively on a blind cloth, and more particularly, to a method for producing a Roman shade type blind cloth, a blind cloth made by the method and a blind using the blind cloth, in which the blind is assembled by easily adjusting an interval between loops and a width of a loop that is formed on an upper side of a weight to which a lower end of the blind cloth is fixed. 
     Further, the present invention relates to a Roman shade type blind cloth and a blind using the same, in which the blind cloth on a back surface of which a ring is formed is woven as double layers so that even though a ring portion is dented by pulling a cord line when the cord line inserted into a ring is wound or unwound around a winding-rod, the dented portion of the ring portion is not to be exposed outside. 
     Further, the present invention relates to a device for adjusting a length of a cord line of a Roman shade type blind and a device for fixing thereof, in which one end of the cord line is fixed to the winding-rod together with roll-up fabric and the other end thereof is fixed to the weight so as to form loops on the fabric, allowing the length of the cord line to be adjusted and the cord line to be fixed easily. 
     BACKGROUND ART 
     Generally, a curtain or blind is arranged on a window or an exit of a building and is used for shielding sunlight, blocking prying eyes from outside, proofing sound, keeping warm and the like. In addition to these purposes, the curtain or blind is used as an important factor of interior decoration for improving interior beauty by means of combinations of colors matching with an inside wall or a window glass. 
     The curtain or blind is classified and used variously depending on its shape as a general type curtain that is unfolded to both sides from a center and folded reversely, a vertical blind that is divided into a plurality of pieces wherein an inclination angle of each piece can be adjusted, a roll screen blind in which a blind cloth of a layer or double layers is wound or unwound around a winding-rod, and a Roman shade curtain that is folded wholly while a curtain cloth is sub-folded vertically by a winding operation of a cord line that adjusts a length of the curtain. 
       FIG. 1  is an exploded-perspective view illustrating one of a conventional Roman shade type blind and  FIGS. 2   a  and  2   b  are sectional views of  FIG. 1  in a longitudinal direction wherein moulds  102  are arranged at a predetermined interval on a blind cloth  101  to be surrounded thereby depending on a length and width of a loop  104  desired to be formed and then the mould  102  surrounded by the blind cloth  101  is inserted into an insertion groove  103   a  formed through one end of a loop-forming bar  103  to be fixed thereto. 
     Next, a protrusion  106   a  of a ring  106  into which the cord line  105  is inserted is fitted into another insertion groove  103   b  that is exposed to the outside of the loop-forming bar  103 , one end of the cord line  107  is fixed to a weight  107  to be fixed to a lower end of the blind cloth  101 , and then the cord line  105  is passed through the ring  106  inserted into the insertion groove  103   b  of the loop-forming bar  103  and a remote end of the cord line  105  is fixed to the winding-rod  108 , thereby completing an assembly thereof. 
     Accordingly, when the cord line  105  is unwound fully from the winding-rod  108 , as shown in  FIG. 2   a , the blind cloth is loosened due to a self-weight of the weight  107  and thus the loop  104  is not formed on the blind cloth  101 . That is, in a state where the blind cloth  101  is unfolded fully as shown in  FIG. 2   a , the blind cloth covers fully a window thereby to shield the interior from outside. 
     Under this state, when a user pulls an adjusting-line  109  to rotate the winding-rod  108 , the loop  104  is formed by the blind cloth  101  disposed on the loop-forming bar  103  located firstly from the weight  107  since the cord line  105  is inserted into each ring  106  while one end of the cord line  105  is fixed to the weight  107 . After that, when the cord line  105  is wound around the winding-rod  108  by pulling continuously the adjusting-line  109 , a second loop  104  is formed by the blind cloth  101  disposed on the loop-forming bars  103  that are firstly and secondly located, as shown in  FIG. 2   b.    
     However, the Roman shade type blind as configured above has several problems as followings. In order to form consecutively the loops, a loop-forming bar, a mould and a ring need to be used necessarily, thereby increasing the number of components, decreasing an assembly property for producing the blind and increasing manufacturing cost therefrom. Further, the weight of the blind cloth becomes heavy with using the loop-forming bar and the mould and thus loads are applied to the winding-rod around which the blind cloth is wound, therefore the boss of an end bracket for supporting the winding-rod is to be broken without sustaining a total weight of the blind cloth, causing fatal damage. Meanwhile, the insertion grooves for the moulds are formed on a front surface of the blind cloth and thus unnecessary lines are displayed thereon, thereby limiting an implementation of various designs. Furthermore, cord lines of several strands for forming the loops on a loop forming fabric are exposed to a back surface of the loop forming fabric and thus the cord lines are exposed while the blind is lowered to shield fully a window, therefore children may wind mischievously the cord line on their neck, causing a safety accident. 
     Further, as shown in  FIGS. 3   a  to  3   c , a conventional weight is provided with a lower rod  71  in a circular shape to which each lower end of the front and rear blind cloths is fixed; lower rod caps  72  on which fitting protrusions  72   a  are protruded, which are fitted into both ends of the lower rod  71 , respectively, so that the caps are not to be split toward both sides of the lower rod  71  and is to be centered thereon; a lower bar  73  that is fitted into the outside of the lower rod  71  in a length direction to balance the center of gravity thereof and cover the lower rod  71 ; and lower rod caps  74  on each of which an axial rod  741  is protruded to balance a rotation center of the lower rod  71  and which are fitted into both ends of the lower bar  73 , respectively, such that the lower rod  71  is not to be split to one side. At this time, the cord line that has passed through the ring formed on aback surface of a front blind cloth is fixed integrally to a lower end of a rear blind cloth and then the rear blind cloth is fixed to the lower rod  71 . 
     However, in a state before the front and rear blind cloths are assembled to the lower rod, the cord line passes through the ring on the front blind cloth and the remote end thereof is fixed to the lower end of the rear blind cloth, and thus the lower ends of the front and rear blind cloths are not separated, but they are separated by the distance from the final ring of the lower end through which the cord line passes to the lower end of the rear blind cloth. Under the states of the front and rear blind cloths as described above, when the lower ends of the front and rear blind cloths are to be fitted into the lower rod  71  and assembled thereto, the front and rear blind cloths need certainly to be fitted simultaneously into the lower rod  71  since they need to be fitted from one side of the lower rod  71 . That is, as described above, the separation between the lower ends of the front and rear blind cloths is limited by the cord line and thus only anyone of the front and rear blind cloths cannot be fitted firstly into the lower rod  71  and assembled thereto. 
     Accordingly, it is fastidious and difficult to assemble the front and rear blind cloths and the lower rod  71 , thereby making the assembly thereof to be inconvenient and decreasing production efficiency. Especially the cord line that is fixed integrally to the rear blind cloth is caught on the lower rod  71  when the rear blind cloth is fitted into the lower rod  71 , to be broken or separated, thereby making the assembly to be difficult. 
     DISCLOSURE 
     Technical Problem 
     The present invention has been proposed to solve the drawbacks of a related art and one object of the present invention is to make an appearance of a blind to be beautiful by forming the loops evenly on a front surface of the blind without using a separate loop-forming bar. 
     Another object of the present invention is to adjust freely the intervals between loops to be formed while the blind is assembled such that several rings into which a cord line is inserted are woven integrally on a back surface of the front blind cloth with maintaining a predetermined interval while the front blind cloth is woven. 
     Further another object of the present invention is to adjust freely the length and the intervals between loops to be formed while the blind is assembled such that the rings into which the cord line is inserted are formed wholly on a back surface of the front blind cloth so as not to entangle the wefts with the warps, or such that the rings are woven integrally with maintaining a predetermined interval while the blind cloth is woven. 
     Still another object of the present invention is to minimize the load applied to a boss of an end bracket for supporting both ends of a winding-rod and prevent a phenomenon in advance where a boss is broken when the blind cloth is wound or unwound around the winding-rod by pulling an adjusting-line. 
     Further still another object of the present invention is to improve convenience of assembly operation and production efficiency by improving the configuration of the weight such that the lower rod is divided into two parts and the front and rear blind cloths are assembled to two lower rods, respectively. 
     Another object of the present invention is to maintain constantly a front surface of the blind cloth as a dense state and a flat state by weaving the part of a back surface of the blind cloth where the rings are formed as double layers even through the texture on which the rings are formed is not dense. 
     TECHNICAL SOLUTION 
     According to a first aspect of the present invention, a Roman shade type blind cloth is provided, wherein two or more ring sets into which a cord line is inserted are woven integrally to be formed repeatedly along a vertical direction and a horizontal direction within a predetermined interval on a back surface of the blind cloth when weaving a fabric. In the Roman shade type blind cloth according to a first aspect of the present invention the ring has a predetermined width b and a weft is woven not to be entangled with a warp by the width b of the ring when weaving the blind cloth. 
     According to a first aspect of the present invention, a blind using a Roman shade type blind cloth is provided, wherein an upper end of a front blind cloth is fixed to a frame and a lower end thereof is fixed to a weight; an upper end of a rear blind cloth is fixed to a winding-rod rotatably mounted on the frame and a lower end thereof is fixed to the weight, respectively; and a cord line that operates the front blind cloth to form a loop passes through a back surface of the front blind cloth and the upper end thereof is fixed to the winding-rod and the lower end thereof is fixed to the weight, is characterized in that the blind cloth is woven such that two or more ring sets are formed repeatedly within a predetermined interval l on a back surface of the front blind cloth, having an interval of a predetermined distance L 2  wherein the cord line that has been inserted into the ring is woven integrally with a blind cloth fabric and the blind cloth between the ring sets is folded frontward by pulling the cord line to form a loop of a predetermined length L 2 /2. 
     Further, according to a first aspect of the present invention, a blind using a Roman shade type blind cloth is provided, wherein an upper end of a front blind cloth is fixed to a frame and a lower end thereof is fixed to a weight; an upper end of a rear blind cloth is fixed to a winding-rod rotatably mounted on the frame and a lower end thereof is fixed to the weight, respectively; and a cord line that operates the front blind cloth to form a loop passes through a back surface of the front blind cloth and the upper end thereof is fixed to the winding-rod and the lower end thereof is fixed to the weight, is characterized in that the blind cloth is woven such that two or more ring sets are formed repeatedly within a predetermined interval l on a back surface of the front blind cloth, having an interval of a predetermined distance L 2  wherein the cord line is passed through two or more rings in turn and the blind cloth between the ring sets is folded frontward by pulling the cord line to form a loop of a predetermined length L 2 /2. 
     According to a second aspect of the present invention, a Roman shade type blind cloth is provided, wherein all of wefts are woven not to be entangled with warps by the width b of the ring, such that rings into which a cord line is inserted are consecutively in a vertical direction on a back surface of the blind cloth. 
     Further, according to a second aspect of the present invention, a blind using a Roman shade type blind cloth is provided, wherein an upper end of a blind cloth is fixed to a frame and a lower end thereof is fixed to a weight; and a cord line that operates the front blind cloth to form a loop passes through a back surface of the blind cloth and the upper end thereof is fixed to a winding-rod and the lower end thereof is fixed to the weight, is characterized in that all of wefts are woven not to be entangled with warps by a width b of the ring such that rings are formed consecutively on a back surface of the blind cloth in a vertical direction, and then the cord line is inserted into the rings by a predetermined length (L 1 ) of the rings and a distance between the rings is maintained with a predetermined length (L 2 ), and the blind cloth between the rings is folded frontward by pulling the cord line to form a loop of a predetermined length L 2 /2. 
     According to a third aspect of the present invention, a Roman shade type blind cloth is provided, wherein wefts are woven not to be entangled with warps by the width b of the ring such that rings into which a cord line is inserted are formed on a back surface of the blind cloth, is characterized in that pockets consisting of internal fabric and external fabric are formed consecutively on the blind cloth and one or more rings are formed on the external fabric that is disposed toward a window. 
     Further, according to a third aspect of the present invention, a blind using a Roman shade type blind cloth is provided, wherein an upper end of a front blind cloth is fixed to a frame and a lower end thereof is fixed to a weight; an upper end of a rear blind cloth is fixed to a winding-rod rotatably mounted on the frame and a lower end thereof is fixed to the weight, respectively; and a cord line that operates the front blind cloth to form a loop passes through a back surface of the front blind cloth and the upper end thereof is fixed to the winding-rod and the lower end thereof is fixed to the weight, is characterized in that pockets consisting of internal fabric and external fabric are formed repeatedly on the front blind cloth and wefts are woven not to be entangled with warps by a width b of the ring such that one or more ring sets into which the cord line is inserted are formed within a predetermined interval l on the external fabric, and then the cord line is passed through one or more rings in turn and the blind cloth between the ring sets is folded frontward by pulling the cord line to form a loop of a predetermined length L 2 /2. 
     Further, according to a third aspect of the present invention, a blind using a Roman shade type blind cloth is provided, wherein an upper end of a blind cloth is fixed to a frame and a lower end thereof is fixed to a weight; and a cord line that operates the blind cloth to form a loop passes through a back surface of the blind cloth and the upper end thereof is fixed to the winding-rod and the lower end thereof is fixed to the weight, is characterized in that pockets consisting of internal fabric and external fabric are formed repeatedly on the blind cloth and wefts are woven not to be entangled with warps by a width b of the ring such that one or more ring sets into which the cord line is inserted are formed within a predetermined interval l on the external fabric, and then the cord line is passed through one or more rings in turn and the blind cloth between the ring sets is folded frontward by pulling the cord line to form a loop of a predetermined length L 2 /2. 
     In the Roman shade type blind cloth according to a first to a third aspects of the present invention, fabric of a blind cloth may be woven integrally by supplying a cord line as a warp and fitting the cord line into a ring when the ring is formed while the blind cloth is woven. 
     According to a fourth aspect of the present invention, the ring into which the cord line is inserted has a predetermined width b when the Roman shade type blind cloth is woven, and warps are woven not to be entangled with wefts by the width b of the ring. Further, rings are formed by arranging distances between warps which are not entangled with wefts to be increased gradually when weaving the blind cloth. 
     According to a fifth aspect of the present invention, a device for adjusting a length of a cord line of a Roman shade type blind and a device for fixing thereof is provided, comprising: a housing at a center of which an insertion hole is formed horizontally to be fixed to a winding-rod and a weight, respectively; and an adjusting-rod that is inserted into the insertion hole formed on the housing wherein the length of the cord line is fixed by forcibly putting an adjusting-rod into the insertion hole while the cord line is supported, or the length of the cord line is adjusted by rotating the adjusting-rod. 
     Advantageous Effects 
     The present invention has the following several advantages as compared to a conventional Roman shade type blind. 
     First, the rings are integrally woven on a back surface of a front blind cloth to freely adjust the length and width of a loop desired to form even without using a separate loop-forming bar, molds, and ring as in a related art. Thus, assembly property according to production of the blind is maximized, thereby significantly decreasing the production costs and cheaply supplying the Roman shade type blind. 
     Second, weight of a blind cloth is minimized without using a loop-forming bar and molds and thus load applied to a winding-rod around which the blind cloth is wound can also be minimized, thereby basically resolving a phenomenon that a boss of end bracket for supporting the winding-rod is broken without sustaining the whole weight of the blind cloth. 
     Third, a loop-forming bar is not used, differently from the related art, and thus unnecessary lines are not exposed on the front surface of a front blind cloth, thereby achieving various shaped designs. 
     Fourth, as a rear blind cloth is applied, a phenomenon in which children could wind a cord line around their neck is prevented, thereby obtaining a function of preventing in advance safety accident of children due to the cord line. 
     Fifth, a structure of a weight is improved, thereby enhancing the convenience of assembling operation and production efficiency. 
     Sixth, when loops are formed by raising a front blind cloth, the loops are not collected in one place, thereby forming uniform loops. 
     Seventh, while the blind is assembled by passing a cord line into the rings formed on a back surface of a blind cloth, as the intervals between loops are widen gradually downwardly, lengths of the loops that are formed by raising the blind cloth are varied, respectively, thereby diversely producing interior environments. 
     Eighth, since a portion at which a ring of a Roman shade type blind cloth is formed is woven as double layers, even if the ring portion is deformed due to load applied thereon under the circumstance that the cord lines have sequentially passed through the rings, a surface positioned inside a window covers the deformed ring portion, thereby preventing in advance a phenomenon in which the ring portion is projected or it protrudes toward the front side. 
     Ninth, a ring into which a cord line is inserted is formed at a predetermined region of warp with a set color and stripe patterns are displayed on weft with desired color. Thus, it is possible to display various designs with respect to the whole length of the warp and to weave cloth with other designs as much as the length that a buyer or a consumer desires, thereby preventing the occurrence of stock in advance. 
     Tenth, all warps of the several hundreds or thousands of strands with a set color are fitted into a heald eye, thereby preventing in advance a phenomenon in which warp is erroneously fitted into a heald eye as in the related art, as well as allowing for prompt manufacturing thereof. 
     Eleventh, an operation of fixing the cord line is completed only by leaving the cord line at an inlet of the housing and pushing the adjusting-rod therein, and then fitting it into a mounting groove formed on a winding-rod or a weight, thereby doubling a working efficiency and reducing the production costs. 
     Twelfth, in a case where a length of the cord line that is fixed is long, the length of the cord line can be adjusted by rotating an adjusting-rod, thereby preventing unwanted effects of throwing the cord line away by cutting it and re-assembling it. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded-perspective view illustrating schematically a Roman shade type blind according to a related art; 
         FIGS. 2   a  and  2   b  are longitudinal sectional views of an assembling state of  FIG. 1 , wherein  FIG. 2   a  is a view illustrating a state where a blind cloth is unfolded fully and  FIG. 2   b  is a view illustrating a state where a part of the blind cloth is wound around a winding-rod and loops are formed at an upper side of a weight; 
         FIGS. 3   a  to  3   c  are views illustrating the weight as shown in  FIGS. 2   a  and  2   b , wherein  FIG. 3   a  is an exploded-perspective view,  FIG. 3   b  is a longitudinal sectional view of an assembly and  FIG. 3   c  is a side-sectional view of the assembly; 
         FIG. 4  is a perspective view illustrating a Roman shade type blind of a double layer according to a first aspect of the present invention, wherein a front and rear blind cloths are fixed simultaneously to a weight; 
         FIG. 5  is a rear view of a front blind cloth to which an embodiment according to a first aspect of the present invention is applied; 
         FIGS. 6   a  and  6   b  are longitudinal sectional views of  FIG. 4 , wherein  FIG. 6   a  is a view illustrating a state where the weight to which the lower ends of the front and rear blind cloths are fixed is disposed at the bottom dead point and  FIG. 6   b  is a view illustrating a state where a loop is formed on the front blind cloth by pulling an adjusting-line; 
         FIG. 7   a  is a detailed-view illustrating a first embodiment of “A” part of  FIG. 5  and  FIG. 7   b  is a detailed-view illustrating a second embodiment of “A” part of  FIG. 5 ; 
         FIG. 8   a  is a detailed-view illustrating a third embodiment of “A” part of  FIG. 5  and  FIG. 8   b  is a detailed-view illustrating a fourth embodiment of “A” part of  FIG. 5 ; 
         FIG. 9   a  is a detailed-view illustrating a fifth embodiment of “A” part of  FIG. 5  and  FIG. 9   b  is a detailed-view illustrating a sixth embodiment of “A” part of  FIG. 5 ; 
         FIGS. 10   a  and  10   b  are longitudinal sectional views illustrating a Roman shade blind of an embodiment according to a first aspect of the present invention in which two weights are fixed to the front and rear blind cloths, respectively, wherein  FIG. 10   a  is a view illustrating a state where the weights to which the lower ends of the front and rear blind cloths are fixed, respectively, are disposed at the bottom dead point and  FIG. 10   b  is a view illustrating a state where a loop is formed on a front blind cloth by pulling an adjusting-line; 
         FIGS. 11   a  to  11   c  are views illustrating a weight of a Roman shade blind of a double layer according to a first aspect of the present invention, wherein  FIG. 11   a  is an exploded-perspective view,  FIG. 11   b  is a longitudinal sectional view of an assembly and  FIG. 11   c  is a side-sectional view of an assembly; 
         FIG. 12  is a view illustrating an embodiment of a blind cloth woven as oblique line patterns according to a first aspect of the present invention; 
         FIGS. 13   a  and  13   b  are rear views illustrating another embodiment according to a first aspect of the present invention, wherein  FIG. 13   a  is a view illustrating a state where a cord line passes completely through a ring and  FIG. 13   b  is a view illustrating a state where the cord line passes through an intermediate of the ring; 
         FIG. 14  a rear perspective view illustrating an embodiment according to a second aspect of the present invention; 
         FIG. 15  is a rear view illustrating a blind cloth to which an embodiment according to a second aspect the present invention is applied; 
         FIGS. 16   a  and  16   b  are longitudinal sectional views of  FIG. 14  wherein  FIG. 16   a  is a view illustrating a state where the weight to which the lower end of the blind cloth is fixed is disposed at the bottom dead point and  FIG. 16   b  is a view illustrating a state where a loop is formed on the blind cloth by pulling the adjusting-line; 
         FIG. 17   a  is a detailed-view illustrating a first embodiment of “A” part of  FIG. 15  and  FIG. 17   b  is a detailed-view illustrating a second embodiment of “A” part of  FIG. 15 ,  FIG. 17   c  is a detailed-view illustrating a third embodiment of “A” part of  FIG. 15  and  FIG. 17   d  is a detailed-view illustrating a fourth embodiment of “A” part of  FIG. 15 ; 
         FIG. 18   a  is a detailed-view illustrating a fifth embodiment of “A” part of  FIG. 15  and  FIG. 18   b  is a detailed-view illustrating a sixth embodiment of “A” part of  FIG. 15 ; 
         FIGS. 19   a  and  19   b  are rear views illustrating the blind cloth to which another embodiment according to a second aspect of the present invention is applied, wherein  FIG. 19   a  is a view illustrating a state where a cord line passes completely through a ring and  FIG. 19   b  is a view illustrating a state where the cord line passes through an intermediate of the ring; 
         FIGS. 20   a  and  20   b  are rear views illustrating the blind cloth to which another embodiment according to a second aspect of the present invention is applied, wherein  FIG. 20   a  is a view illustrating a state where a cord line passes through the rings at a predetermined interval of same distance and  FIG. 20   b  is a view illustrating a state where the cord line passes through the rings at gradually increased intervals downwardly; 
         FIG. 21  is a perspective view illustrating a blind cloth of an embodiment according to a third aspect of the present invention; 
         FIG. 22  is a perspective view illustrating a blind cloth of another embodiment according to a third aspect of the present invention; 
         FIG. 23  is a perspective view illustrating a blind cloth of further another embodiment according to a third aspect of the present invention; 
         FIGS. 24   a  and  24   b  are perspective views illustrating a state where a tension band is fitted into a blind cloth; 
         FIG. 25  is a sectional view illustrating a pocket where a tension band is fitted into a blind cloth as shown  FIGS. 24   a ,  24   b;    
         FIGS. 26   a  and  26   b  are side views illustrating an assembly of a blind to which the front and rear blind cloths of a blind device according to a third aspect of the present invention are applied; 
         FIGS. 27   a  and  27   b  are side views illustrating an assembly of a blind to which the front blind cloth of a blind device according to a third aspect of the present invention is applied; 
         FIG. 28  is a rear view illustrating an embodiment of a blind cloth according to a fourth aspect of the present invention; 
         FIG. 29  is a view illustrating a state where the blind cloth of  FIG. 28  is cut depending on a width of a window to be rotated at an angle of 90°; 
         FIG. 30  is a view illustrating another embodiment of a blind cloth according to a fourth aspect of the present invention; 
         FIG. 31  is a rear view illustrating further embodiment of rings of a blind cloth according to a fourth aspect of the present invention; 
         FIG. 32  is a view illustrating a state where loops are formed when the blind cloth of  FIG. 31  is raised; 
         FIG. 33  is a view illustrating a state where one end of roll-up fabric of a conventional Roman shade type blind is fixed to a winding-rod and the roll-up fabric is unfolded completely; 
         FIG. 34  is an enlarged-longitudinal sectional view illustrating a state where each end of a cord line, roll-up fabric and loop forming fabric is fixed to a weight of a conventional Roman shade type blind; 
         FIG. 35  is an exploded-perspective view illustrating main components of a device according to a fifth aspect of the present invention; 
         FIG. 36  is a perspective view illustrating an assembly of the device of  FIG. 35 ; 
         FIG. 37  is a longitudinal sectional view of  FIG. 36 ; 
         FIG. 38  is a view illustrating a state where the device according to a fifth aspect of the present invention is installed to the weight; 
         FIGS. 39   a  and  39   b  are longitudinal sectional views illustrating the devices according to a fifth aspect of the present invention are fixed to a winding-rod and a weight, respectively; and 
         FIG. 40  is a perspective view illustrating an adjusting-rod as another supporting means for the device according to a fifth aspect of the present invention. 
     
    
    
     BEST MODE FOR THE INVENTION 
     The objects, features and advantageous effects as stated above will be obvious through the following embodiments of the present invention, which will be described with reference to the accompanying drawings. 
     The special configurations and functional descriptions are merely exemplary for describing the embodiments according to the present invention, and further the embodiments of the present invention may be replaced by various modifications, and thus should not be construed as limiting thereto. 
     The embodiments according to a concept of the present invention may be changed variously and have various types and thus the special embodiments will be illustrated in the drawings and described in the specification. However, the embodiments according to a concept of the present invention are not limited to the specifically disclosed types and thus it should be understood that it includes all modifications and equivalents or replacements included within a spirit and a scope of the present invention. 
     Although terms like a first and/or a second are used to describe various components, but the components are not limited to these terms. These terms are used only to differentiate one component from another one, for example, the first component can be referred to as the second component, or the second component can be referred to as the first component, without departing from the scope of the present invention. 
     It also should be understood that when it is stated that one component is “connected” or “coupled” to another component, even though the one component may be directly connected or coupled to the another component, but there may be other components between them. However, it has to be understood that when it is stated that one component is “directly connected” or “directly coupled” to another component, there is no intermediate component between them. The terms used for describing a relation among other components, that is, “between”, “right between”, “adjacent to” or “directly adjacent to” have to be construed similarly. 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting to the embodiments. As used herein, unless otherwise defined, the singular forms “a,” “an” and “the” are intended to include the plural forms as well. Unless the context indicates otherwise, it will be further understood that the terms “comprising” and/or “having” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, parts or combination thereof. 
     All terms including technical or scientific terminology used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
     Hereinafter, reference numerals will now be made in detail to various embodiments of the present invention, examples of which are illustrated in the accompanying drawings and described below. In the drawings, the same reference numerals refer to the same components. 
     Hereinafter, the preferred embodiments of the present invention will be described in detail referring to the drawings. 
     Firstly, a Roman shade type blind cloth and a blind device using the same according to a first aspect of the present invention will be described, referring to  FIGS. 4 to 13   b.    
       FIG. 4  is a perspective view illustrating a Roman shade type blind to which a Roman shade type blind cloth according to a first aspect of the present invention is applied,  FIG. 5  is a rear view illustrating a front blind cloth to which an embodiment according to a first aspect of the present invention is applied and  FIGS. 6   a  and  6   b  are longitudinal sectional views of  FIG. 4 . 
     According to an embodiment of a first aspect of the present invention, it is featured that a blind cloth  11  may be woven integrally such that two or more ring sets  15  into each of which a cord line  14  is inserted are formed repeatedly along a horizontal direction and a vertical direction within a predetermined interval l on a back surface of the blind cloth  11 . Here, the description of “a blind cloth  11  may be woven integrally such that two or more ring sets  15  into each of which a cord line  14  is inserted are formed repeatedly within a predetermined interval l on a back surface of the blind cloth  11 ” means that the weft and the warp are woven in a case of a general weaving method, however, in a case of the ring set  15  of the present invention, the weft on which the ring set  15  is formed is woven not to be entangled with the warp by floating itself, thereby to form the ring set. Further, the description means that the weft and the warp are woven to be entangled in the region where the ring set is not formed between one ring set  15  and the adjacent ring set  15 . Here, whether the interval between the ring sets is woven densely or sparsely is determined depending on material of fabric, thickness of fabric and whether the fabric is coated or not, etc. 
     According to another type of the blind cloth according to a first aspect of the present invention, the blind cloth may be woven integrally such that all of wefts within the given interval l on a back surface of the blind cloth  11  are woven not to be entangled with warps by floating them, thereby forming consecutively the rings  15 . Here, the description of “the blind cloth may be woven integrally such that all of wefts within the set interval l on a back surface of the blind cloth  11  are woven not to be tangled with warps by floating them, thereby forming consecutively the rings  15 ” means that the rings are formed consecutively through all intervals between the rings without any gap therebetween, and that all of wefts within the given interval l are floated not to be entangled with the warps such that the wefts become the rings. That is, it can be cleared by understanding the difference between forming two or more ring sets  15  and forming consecutively a plurality of rings within the predetermined interval l as described above. 
     In a case of configuring a blind using the blind cloth according to a first aspect of the present invention as described above, the upper ends of a front and rear blind cloths  11 ,  18  are fixed to a frame  23  and a winding-rod  13 , respectively, and lower ends of the front and rear blind cloths  11 ,  18  are fixed simultaneously to one weight  12 , and a cord line  14  is passed through in turn two or more ring sets  15  disposed on a back surface of the front blind cloth  11  depending on an interval L 1  between loops to be formed and a length L 2 /2 of a loop, and then one end of the cord line  14  is fixed to the weight  12  and the other end thereof is fixed to the winding-rod  13 . Here, when both ends of the cord line  14  are fixed to the weight  12  and the winding-rod  13 , respectively, a bonding agent or a knot method may be used. Further, the cord lines may be inserted into a fastening device provided with a male and female connection means to be fixed thereto so as to adjust easily a length of the cord line and fix efficiently the cord line. 
       FIG. 7   a  is a detailed-view illustrating a first embodiment according to a first aspect of the present invention, and it shows a case where four ring sets  15  are formed within a predetermined interval l on a back surface of the front blind cloth, and the cord line  14  is passed through only two ring sets  15  thereby to determine the interval L 1  between loops.  FIG. 7   b  is a detailed-view illustrating a second embodiment of “A” part of  FIG. 5 , and it shows a case where four ring sets  15  are formed within a predetermined interval l on a back surface of the front blind cloth, the cord line  14  is passed through three ring sets  15  thereby to determine the interval L 1  between loops. As described above, when the cord line  14  is inserted into each ring  15  formed along a vertical direction of the front blind cloth  11 , the cord line  14  is passed through only two ring sets  15  that are adjacent up/downward when forming the interval L 1  between loops to be narrow. Unlike this, the cord line  14  is passed through three or more adjacent ring sets  15  when forming the interval L 1  between loops to be wide, thereby adjusting easily the interval between loops when assembling the blind. 
     The ring  15  may be fixed to a back surface of the front blind cloth  11  using a separate bonding means (bonding, high frequency, sewing and the like), but it may be advantageous in terms of production efficiency to form integrally the ring with the front blind cloth by weaving them integrally. 
     Further, when the ring  15  is formed while weaving the blind cloth, the fabric of the blind cloth may be woven integrally by supplying the cord line  14  as weft and inserting it into the ring  15 . 
     Meanwhile, the loops are formed on the front blind cloth in the Roman shade type blind using the front blind cloth as described above without using a loop-forming bar, a mould and a ring. However, since the front blind cloth is woven of a relatively thin and soft fabric and the cord line is inserted into in turn two or more ring sets formed on a back surface of the front blind cloth at a predetermined interval, there may occur a case where the interval between loops is not maintained constantly. 
     Accordingly, in another embodiment according to a first aspect of the present invention, as shown in  FIG. 8   a , an interval maintaining member  16  through which the cord line  14  passes may be fitted between one ring set  15  and another ring set  15  on a back surface of the front blind cloth  11 , thereby maintaining the interval L 1  between loops constantly as the cord line  14  passes through one ring set  15 , the interval maintaining member  16  and another ring set  15  in turn. That is, the interval maintaining member  16  is disposed between the ring sets  15  formed on a back surface of the front blind cloth  11  and the cord line  14  also passes the inside of the interval maintaining member  16  when the cord line  14  passes through the ring sets  15 . 
     Further, another object of installing the interval maintaining member is as follows. That is, if the interval maintaining member  16  is not installed and only the cord line  14  is inserted to pass between one ring set  15  and another ring set  15 , since the front blind cloth  11  is woven of a relatively thin and soft fabric, the interval between one ring set  15  and another ring set  15  is not maintained constantly and a part between the ring sets is folded. Accordingly, there may be a probability that the interval between loops cannot be maintained constantly and thus the interval maintaining member  16  is installed between one ring set  15  and another ring set  15  so as to prevent the above phenomenon in advance. In this case, it can be understood that the interval L 1  between loops is determined depending on the length and number of the interval maintaining member. 
     A shape of the interval maintaining member  16  that is applied to another embodiment according to a first aspect of the present invention may be a tube form of a circle, polygon (triangle, rectangle, pentagon, hexagon and the like), if necessary. 
       FIG. 8   b  is a view illustrating further another embodiment according to a first aspect of the present invention, wherein in a case of widening further the interval L 1  between loops, a plurality of interval maintaining member  16  may be installed on intervals between four ring sets  15 , respectively, such that the cord line  15  is passed through the ring sets  15  and the interval maintaining members  16  in turn. 
       FIGS. 9   a  and  9   b  are views illustrating another embodiment according to a first aspect of the present invention, using another type of the interval maintaining member wherein the interval maintaining member  16  may be formed as a long ring pin-type one side of which is opened such that the ring set  15  is fitted and retracted therethrough, and the size of which is determined such that the interval maintaining member is fitted into two ring sets  15  as shown in  FIG. 9   a , or it is fitted into simultaneously four ring sets  15  as shown in  FIG. 9   b , by using a bend-molding or injection-molding method. At this time, the cord line  14  is passed through the interval maintaining member  16  of a ring pin type which is fitted into the ring sets  15 , thereby connecting simply between the ring sets and, as a result, making a loop shape with being in contact with the interval maintaining member  16  when it is operated. 
     In each embodiment according to a first aspect of the present invention configured as described above, the rear blind cloth  18  is further arranged on a back surface of the front blind cloth  11  and the upper end of the rear blind cloth is fixed to the winding-rod  13  together with the cord line  14  and the lower end thereof is fixed to the weight  12  together with the cord line  14 . As a result, it has advantageous effects to prevent children from winding mischievously the cord line  14  arranged on a back surface of the front blind cloth  11  on their neck and being suffocated in advance. 
     In a case where the front and rear blind cloths  11 ,  18  are arranged a light-transmitting part  19  and a light-shielding part  20  may be formed consecutively such that the interior is bright and well-ventilated without raising the front and rear blind cloths  11 ,  18 . At this time, the ring sets  15  that are formed on a back surface of the front blind cloth  11  are woven as two or more within the set interval l on an upper side of the light-shielding part  20 . 
       FIGS. 10   a  and  10   b  are views illustrating a Roman shade blind of a double layer of another embodiment according to a first aspect of the present invention wherein, two weights  12   a ,  12   b  may be fixed separately to each lower end of the front and rear blind cloths  11 ,  18 . In this case, as described above, the cord line  14  is passed through two or more ring sets  15  disposed on a back surface of the front blind cloth  11  in turn and an upper end thereof needs to be fixed to the winding-rod  13  and the lower end thereof needs to be fixed to the weight  12   b  of the rear blind cloth  18 . 
       FIGS. 11   a  to  11   c  are views illustrating the weights  12  of a blind device of another embodiment according to a first aspect of the present invention, wherein each weight  12  is provided with two semicircular rods  71   a ,  71   b  that are divided, to which the lower ends of the front and rear blind cloths  11 ,  18  are fixed, respectively; a lower rod cap  72  on which two fitting protrusions  72   a  are protruded to face each other, which are fitted into assembly holes  711   a ,  711   b  of the respective semicircular rods  71   a ,  71   b  not to be separated to both sides and balance the center so as to maintain a circular shape of two semicircular rods  71   a ,  71   b  when it is assembled to the semicircular rods  71   a ,  71   b ; a lower bar  73  that is fitted into the outside of the lower rod in a length direction to balance a weight center and cover the lower rod; and a lower bar cap  74  which is fitted into both ends of the lower rod  73  for the semicircular rods  71   a ,  71   b  not to be separated to one side and on which an axial rod  741  is protruded to maintain the rotation centers of the semicircular rods  71   a ,  71   b.    
     According to the embodiment of a first aspect of the present invention as described above, the difficulty caused when the blind cloths are assembled to the semicircular rods  71   a ,  71   b  due to the limitation of the separation of the lower ends of the front and rear blind cloths  11 ,  18  from each other by the cord line  14  is mitigated, wherein two semicircular rods  71   a ,  71   b  are assembled to the front and rear blind cloths  11 ,  18 , respectively, thereby improving convenience of assembly and production efficiency. 
     Further, even though the semicircular rods  71   a ,  71   b  are formed as two semicircles, the two semicircular rods  71   a ,  72   b  are arranged as one circle and assembled with the lower rod cap  72 , thereby forming one lower rod having a circle shape, similar to the existing lower rod cap. The subsequent assembling process of the weight  12  may be performed identically to a related art. 
     Additionally, the contact faces of two semicircular rods  71   a ,  71   b  may be adhered using bonding agents (instant glue, double-sided tape and the like) so as to prevent the semicircular rods  71   a ,  71   b  from being separated from a center. 
     Further, the fitting protrusions  72   a  are protruded to face each other on each lower rod cap  72 , which are fitted into the assembly holes  711   a ,  711   b  of the semicircular rods  71   a ,  71   b , respectively, not to be retracted wherein the fitting protrusion may be shaped as a triangle, a cone and the like but it is not limited thereto. 
       FIG. 12  is a perspective view illustrating the blind cloth that is applied to a device according to a first aspect of the present invention, wherein the front and rear blind cloths are woven as oblique line patterns, thereby creating light shielding effect of wider area and beauty effect of interior. 
       FIGS. 13   a  and  13   b  are rear views illustrating another embodiment according to a first aspect of the present invention, wherein differently from the embodiment of the present invention in which several ring sets  15  are formed within the given interval l on a back surface of the Front blind cloth  11  and the cord line  14  is passed through two or more ring sets in turn, several rings  15  are formed consecutively and the cord line  14  passed through completely the rings  15  as shown in  FIG. 13   a , or is unthreaded therefrom at an intermediate as shown in  FIG. 13   h , and thus the interval L 1  between loops and the length L 2 /2 of a loop to be formed can be adjusted. 
     The weft with different color may be disposed on a part of the rings  15  from which the cord line is unthreaded, so as to identify easily the part of the rings from which the cord line is unthreaded while assembling the cord line  14 . 
     Next, the operations of a Roman shade type blind cloth and a blind device using the same according to a first aspect of the present invention configured as described above will be described. 
     Firstly, the cord line  14  is inserted into the ring sets  15  or the interval maintaining member  16  in turn, which are formed along a vertical direction and a horizontal direction on a back surface of the front blind cloth  11  corresponding to the interval L 1  between loops and the length L 2 /2 of a loop to be formed, and one end of the cord line is fixed to the weight  12  and the other end thereof is fixed to the winding-rod  13 , thereby completing the assembly of the blind. 
     That is, similarly to the embodiment according to a first aspect of the present invention, in a case where the ring sets  15  are woven integrally on a back surface of the front blind cloth  11 , the cord line  14  can be inserted into the ring sets so as to adjust the interval between loops without using any separate components. For example, when the cord line  14  is inserted into two ring sets  15  that are formed along a vertical direction of the front blind cloth, as shown in  FIG. 7   a , the cord line is passed through only two ring sets  15  that are adjacent up/downwardly, thereby minimizing the interval L 1  between loops. 
     Further, the length. L 2 /2 of a loop is determined whether how long distance is left when the cord line  14  is inserted into the subsequently disposed-ring set  15  after the cord line  14  is passed through two ring sets  15 . 
     Meanwhile, as the embodiment shown in  FIGS. 8   a  and  8   b  in a case where the interval between loops is adjusted by arranging the interval maintaining member  16  on a back surface of the front blind cloth  11 , the interval L 1  between loops is determined depending on the length and number of the interval maintaining member  16  that is fixed to a back surface of the front blind cloth  11 . 
     In a state where the blind that is assembled completely (manually or automatically) is arranged on a window, when the rear blind cloth.  18  and the cord line  14  are unwound fully from the winding-rod.  13  by pulling the adjusting-line  22 , as shown in  FIG. 6   a , the weight  12  is disposed at a bottom dead point so that the loop  21  is not formed on the front blind cloth  11 , thereby maintaining a state in which the interior is shielded from outside. Under this state when the winding-rod  13  is rotated by pulling the adjusting-line  22  by a user, the cord line  14  and the rear blind cloth  18  are wound around the winding-rod.  13 , and the weight  12  to which the cord line  14  and the other end of the rear blind cloth.  18  are fixed is raised, and as a result the loop  21  is formed at a point where the cord line is passed through a first ring set portion from the weight  12 . Subsequently, when the cord line  14  and the rear blind cloth  18  are wound further around the winding-rod  13  by pulling continuously the adjusting-line  22 , a second loop  21  is formed at a point between the ring sets portions through which the cord line is passed firstly and secondly, as shown in  FIG. 6   b . Here, the description of “the ring sets portions through which the cord line is passed firstly and secondly” means, for example, the ring sets  15  into which the cord line  14  is inserted on the first and second light-shielding parts  20  of the lowest end of the front blind cloth  11  consisting of the light-transmitting part  19  and the light-shielding part  20  repeatedly. 
     While the loop  21  is formed on the front blind cloth  11  in the way as described above, in a case of a Roman shade blind where the Light-transmitting part  19  and the light-shielding part  20  are formed consecutively on the front and rear blind cloths  11 ,  18 , the light-transmitting parts  19  of the front and rear blind cloths  11 ,  18  are to be corresponded, thereby performing the brightness and ventilation of interior. 
     As another embodiment according to a first aspect of the present invention, even when the lower ends of the front and rear blind cloths  11 ,  18  are fixed to the separate weights  12   a ,  12   b , respectively, as shown in  FIGS. 10   a  and  10   b , the above operational processes are to be identical. However, since the weights  12   a ,  12   b  are arranged separately, the rear blind cloth  18  is wound firstly in accordance with the rotation of the winding-rod  13  when it is operated and thus the weight  12   b  of the rear blind cloth  18  is raised until it contacts the ring set portion  15  at the lowest end of the front blind cloth  11 . From the time when the weight  12   b  of the rear blind cloth  18  contacts the ring set portion  15  at the lowest end of the front blind cloth  11 , the weight  12   b  pulls upwardly the ring set portion  15  at the lowest end of the front blind cloth  11  and thus the front blind cloth  11  is raised, therefore it gradually becomes a form of a loop from the lower end of the front blind cloth  11 . 
     On the contrary, when the front and rear blind cloths  11 ,  18  are lowered, the loop  21  that has been formed on the front blind cloth  11  is unfolded to its original shape while the front and rear blind cloths are lowered gradually due to self-weights of the weights  12   a ,  12   b , and the front blind cloth  11  is unfolded completely and the weight  12   b  of the rear blind cloth  18  is to be separated from the ring set portion  15  at the lowest end of the front blind cloth  11  while they are lowered to the lowest part. Of course, the lowering distance is limited since the lengths of the front and rear blind cloths  11 ,  18  and the cord line  14  are predetermined. 
     Subsequently, a Roman shade type blind cloth and a blind device using the same according to a second aspect of the present invention will be described, referring to  FIGS. 14 to 20   b . When describing the blind cloth and the blind device according to a second aspect of the present invention, the descriptions of the configuration and operation similar to those of the blind cloth and the blind device according to a first aspect of the present invention are omitted. 
       FIG. 14  a rear perspective view illustrating an embodiment according to a second aspect of the present invention,  FIG. 15  is a rear view illustrating a blind cloth to which an embodiment according to a second aspect of the present invention is applied, and  FIGS. 16   a  and  16   b  are longitudinal sectional views of  FIG. 14 . 
     In the embodiment according to a second aspect of the present invention one end of a blind cloth  211  is fixed to a frame  217  and the other end thereof is fixed to a weight  212 , one end of a cord line  214  is fixed to the weight  212  together with the blind cloth  211  and the other end thereof is fixed to a winding-rod  213  while it passes through the ring sets that are formed at a predetermined interval on a back surface of the blind cloth  211 , and a loop  219  is formed or retracted on the blind cloth  211  depending′ on whether the cord line  214  is wound or unwound around the winding-rod  213  by pulling an adjusting-line  218 . These configurations are identical to those of a conventional Roman shade type blind and thus the detailed descriptions thereof are omitted. 
     Further, even though the ring  215  that is formed with maintaining a predetermined space “s” in a horizontal direction on a back surface of the blind cloth  211  may be woven integrally as two or more lines in a horizontal direction depending on whether a width of the blind cloth  211  in a horizontal direction is wide or narrow in each embodiment according to a second aspect of the present invention. However, hereinafter, only the ring set  215  of one line will be described. 
     According to another embodiment of a second aspect of the present invention, the blind cloth  211  is woven such that two or more ring sets  215  are formed repeatedly within a given interval l on a back surface thereof. Here, the description of “a blind cloth  211  is woven integrally such that two or more ring sets  215  are formed repeatedly within a given interval l on a back surface thereof” means that the weft and the warp are woven in a case of a general weaving method, however, in a case of the ring set  215  that is formed on a back surface of the blind cloth  211  in the embodiment according to a second aspect of the present invention, the weft is woven not to be entangled with the warp by floating it by a width b of the ring set  215 , thereby to form the ring set  215 . Further, the description means that the weft and the warp are woven to be entangled in the region where the ring set is not formed between one ring set  215  and the adjacent ring set  215 . Here, whether the interval between the ring sets is woven densely or sparsely is determined depending on material of fabric, thickness of fabric and whether the fabric is coated or not, etc. 
     According to another embodiment of a second aspect of the present invention, the blind cloth is woven such that all of wefts within the given interval l on a back surface of the blind cloth  211  are not entangled with warp thereby to form consecutively several rings  215 , and then the cord line  14  is passed through completely the rings  215  as shown in  FIG. 19   a , or is unthreaded at a set location (for example, at the ½ point or ⅓ point of the rings) as shown in  FIG. 19   b , to be assembled to adjust easily the interval L 1  between loops and the length L 2 /2 of a loop to be formed. Here, the description of “the blind cloth is woven such that all of wefts within the given interval l on a back surface of the blind cloth  211  not to be entangled with warp by floating them thereby to form integrally the rings” means that the rings are formed consecutively through all intervals between the rings without any gap therebetween, and that all of wefts with the given interval l are floated by the width b of a ring not to be entangled with the warp such that the wefts become the rings. That is, it can be cleared by understanding the difference between forming two or more ring sets  15  and forming consecutively a plurality of rings within the predetermined interval l as described above. 
     According to another embodiment of a second aspect of the present invention, the wefts are woven not to be tangled with warp by the width b of a ring so that the rings  215  are formed consecutively up/downwardly on a back surface of light-shielding blind cloth  211  and then the cord line  214  is unthreaded at equal-intervals from random locations of the rings as shown in  FIG. 20   a , or is unthreaded at gradually increasing intervals downwardly as shown in  FIG. 20   b  thereby to adjust easily the interval L 1  between loops and the length L 2 /2 of a loop. Here, the description of “all of wefts at a region where the rings  215  are formed on a back surface of light-shielding blind cloth  211  are woven not to be tangled with warp by floating them by the width b of a ring” means that the rings are formed consecutively through all back surface of the blind cloth  211  as shown in  FIG. 20   a.    
     In each embodiment as shown in  FIGS. 19   a  to  20   b  the weft  220  with different color may be disposed at predetermined portions of the rings  215 , from which the cord line  214  is unthreaded, so as to identify easily the part of the rings from which the cord line is unthreaded while assembling the cord line  214 . 
       FIG. 17   a  is a detailed view illustrating a first embodiment of “A” part of  FIG. 15 , wherein two rimy sets  215  through which the cord line  214  passes are formed on a back surface of the blind cloth  211  and the cord line  214  is passed through the two ring sets  215  in turn thereby to determine the interval L 1  between loops. That is, when the cord line  214  is inserted into each ring set  215  that is formed along a vertical direction of the blind cloth  211 , the cord line  214  is passed through only two adjacent ring sets  215  when forming the interval L 1  between loops to be narrow as shown in  FIG. 17   a . On the other hand, the cord line  214  is passed through adjacent three or more ring sets  215  when forming the interval L 1  between loops to be wide as shown in  FIG. 17   b , thereby adjusting easily the interval L 1  between loops when assembling the blind. 
       FIG. 17   c  is a detailed view illustrating a third embodiment of “A” part of  FIG. 15 , wherein an interval maintaining member  216  is fitted between the ring sets  215  on a back surface of the blind cloth  211 , such that the cord line  214  is passed through one ring set  215 , the interval maintaining member  216  and another ring set  215  in turn to determine the interval L 1  between loops. 
       FIG. 17   d  is a detailed view illustrating a fourth embodiment of “A” part of  FIG. 15 , wherein a plurality of interval maintaining members  216  are arranged between four ring sets  215 , respectively, when forming the interval L 1  between loops to be wider such that the cord line  214  is passed through one ring set  215 , the interval maintaining members  216  and other ring sets  215  in turn. 
       FIGS. 18   a  and  18   b  are views illustrating a fifth and sixth embodiments of “A” part of  FIG. 15 , wherein the interval maintaining member  216  may be formed as a long ring pin-type one side of which is opened such that the ring set  215  is fitted and retracted therethrough, and the size of which is determined such that the interval maintaining member is fitted into two ring sets  215  as shown in  FIG. 18   a , or it is fitted into simultaneously four ring sets  215  as shown in  FIG. 18   b , by using a bend-molding or injection-molding method. At this time, the cord line  14  is passed through the interval maintaining member  216  of a ring pin type which is fitted into the ring sets  215 , thereby connecting simply between the ring sets. 
     The set interval l and the interval L 1  between loops have the same meaning in the embodiments according a second aspect of the present invention. 
     Subsequently, the operations of a blind device configured according to a second aspect of the present invention will be described. 
     Firstly, the upper and lower ends of light-shielding blind cloth  211  are fixed to a frame  217  and a weight  212 , respectively, and the cord line  214  is inserted into the rings  215  or the interval maintaining member  216  in turn that are formed along a vertical direction and a horizontal direction on a back surface of the blind cloth  211  corresponding to the interval L 1  between loops and the length L 2 /2 of a loop to be formed, and then one end of the cord line  214  is fixed to the weight  212  together with the blind cloth.  211  and the other end thereof is fixed to a winding-rod  213  while the blind is assembled, thereby completing an assembly of the blind. 
     When assembling a blind, the length L 2 /2 of a loop is determined whether how long distance is left when the cord line  214  is fitted into the subsequently disposed-ring set  215  after the cord line  214  is passed through two ring sets  215 . 
     In a state where the blind that is assembled completely (manually or automatically) is arranged on a window, when the cord line  214  are unwound fully from the winding-rod  213  by pulling the adjusting-line  218 , as shown in  FIG. 16   a , the weight  212  is disposed at a bottom dead point so that the loop  219  is not formed on the front blind cloth  211 , thereby maintaining a state in which the interior is shielded from outside. 
     Under this state when the winding-rod  213  is rotated by pulling the adjusting-line  213  by a user, the cord line  214  is wound around the winding-rod  213 , and the weigh part  212  to which the cord line  214  and the other end of the rear blind cloth  211  are fixed is raised, and as a result the loop  219  is formed at a point where the cord line is passed through a first ring sets portion.  215  from the weight  212 . 
     Subsequently, when the cord line  214  is wound further around the winding-rod  213  by pulling continuously the adjusting-line  218 , a second loop  221  and a third loop  221  are formed between the ring sets portions through which the cord line are passed firstly, secondly and thirdly, respectively, as shown in  FIG. 16   b.    
     Meanwhile, in  FIG. 19   a  showing another embodiment according to a second aspect of the present invention only when the cord line  14  is passed through the rings  15  that are formed on a back surface of the blind cloth  11  in turn and the one end of the cord line is fixed to the weight  12  together with the blind cloth  11  and the other end thereof is fixed to the winding-rod  13 , the assembly of the blind is completed. 
     Further, in cases of  FIG. 19   b  and  FIG. 20   a  showing another embodiment only when the cord line  214  is passed to be fitted into the set locations of the rings  215  that are formed on a back surface of the blind cloth  211 , or as shown in  FIG. 20   b , the cord line  214  is inserted into the rings  215  such that the length L 2 /2 of a loop is increased gradually downwardly, and then one end of the cord line is fixed to the weight  212  together with the blind cloth  211  and the other end thereof is fixed to the winding-rod  213 , the assembly of the blind is completed wherein the operations thereof are identical to those of the first embodiment and thus detailed descriptions thereof are omitted. 
     Here, it is cleared that the winding-rod  213  may be replaced with a rotation shaft and bobbin. 
     Next, a Roman shade type blind cloth and a blind device using the same according to a third aspect of the present invention will be described, referring to  FIGS. 21 to 27   b . When describing the blind cloth and blind device according to a third aspect of the present invention, the descriptions of the configurations and operations similar to those of the blind cloths and blind devices according to a first and second aspect are omitted. 
     The blind cloth according to a third aspect of the present invention is woven such that the wefts are not entangled with the warps by a width b of a ring so that the ring  302  is formed on a back surface of the blind cloth  301  wherein it is woven to be provided with internal and external fabrics  301   a ,  301   b  of double layers so that a pocket  311  is formed through the blind cloth  301 , and the ring  302  is formed on the external fabric  301   b  that is disposed toward a window. At this time, a light-transmitting part  301   c  and a light-shielding part  301   d  are formed consecutively and repeatedly on the blind cloth as shown in  FIG. 21 , or only the light-transmitting parts or the light-shielding parts are arranged thereon as shown in  FIGS. 22 and 23 . 
     In a case of the blind cloth  301  consisting of the light-transmitting part  301   c  and the light-shielding part  301   d , it is woven as the internal and external fabrics  301   a ,  301   b  of double, layers so that the pocket  311  is formed on an upper-part of the light-shielding part  301   c  wherein it is woven such that one or more rings  302  are formed repeatedly within a given interval l of the external fabric  301   b.    
     Further, in a case of the blind cloth  301  consisting of only the light-transmitting parts or the light-shielding parts, as shown in  FIG. 22 , it is woven as the internal and external fabrics  301   a ,  301   b  of double layers that are formed repeatedly, leaving a given interval, so that the pockets  311  are formed wherein it is woven such that one or more ring sets are formed repeatedly within a given interval l of the external fabric  301   b.    
     Additionally, as shown in  FIG. 23 , in the blind cloth  301  the internal and external fabrics  301   a ,  301   b  are woven consecutively so that the pockets  311  are formed consecutively by a boundary portion.  306 , wherein it is woven such that one or more rings  302  are formed repeatedly within a given interval l of the external fabric  301   b.    
     The blind cloth according to a third aspect is different from those of a first and second aspects of the present invention in respect that the blind cloth  301  at a part of which the ring  302  is formed is woven as double layers of the internal fabric  301   a  that is disposed at interior and the external fabric  301   b  that is disposed toward a window. 
     Further, while a part of the blind cloth according to a third aspect of the present invention on which the ring  302  is formed is woven as double layers, it is woven such that all of wefts at a ring portion of the external fabric  301   b  of a window are not entangled with warp by a width b of a ring so that the ring  302  is formed. At this time, the external fabric is woven such that one or more rings  302  are formed repeatedly within a given interval l. 
     In the blind cloth according to a third aspect of the present invention when the loop  304  is formed on the blind cloth  301  as the cord line  303  that is inserted into the ring  302  is wound around a winding-rod (not shown), even though the ring portion formed on the external fabric  301   h  of a window is deformed, the deformed part is covered with the internal fabric  301   a  of a window not to be exposed outside. 
     As in  FIG. 21  showing the blind cloth  301  that is applied to a third aspect of the present invention as an embodiment, the blind cloth may be woven such that the light-transmitting part  301   d  and the light-shielding part  301   c  are formed consecutively and repeatedly. However, as in  FIGS. 22 and 23  showing another embodiment, the blind cloth  301  may be woven only with the light-shielding part. 
     The blind cloth  301  of  FIGS. 26   a  and  26   b  showing an embodiment according to a third aspect of the present invention is provided with a front blind cloth  303  and a rear blind cloth  309 . And the interior can be bright and well-ventilated by corresponding the light-transmitting parts thereof even without winding the rear blind cloth  309  around the winding-rod  305 . At this time, the rear blind cloth  309  is identical to the front blind cloth  303  according to a third aspect of the present invention, or may be a blind cloth only consisting of a light-transmitting part and a light-shielding part or any blind cloth. 
       FIG. 24   b  is a perspective view illustrating another embodiment of a blind cloth according to a third aspect of the present invention, wherein while the blind cloth  301  is woven consecutively as double layers such that a boundary portion.  306  is disposed at a predetermined interval, it is woven such that all of wefts at a ring portion of the external fabric  301   b  are not to be entangled with warp by floating them at a predetermined interval, the rings  302  are formed consecutively up/downwardly. 
     In each embodiment according to a third aspect of the present invention, the internal fabric  301   a  and the external fabric  301   b  are shown to be spaced each other to be identified with naked eyes, however it can be understood that they contact each other when weaving them. 
     The blind cloth and the blind device according to a third aspect of the present invention is provided with the internal fabric  301   a  and the external fabric  301   b  such that the pocket  311  is formed through the front blind cloth  301 . Further, it is woven such that one or more rings  302  are formed within a given interval of the external fabric  301   b , and then the cord line  303  is passed through the rings in turn thereby to adjust the interval L 1  between loops and the length L 2 /2 of a loop to be formed. 
     In the blind of each embodiment according to a third aspect of the present invention the pockets  311  of the front blind cloth  301  are arranged to be repeated with leaving a given interval; or the front blind cloth  301  is provided with the internal and external fabrics  301   a ,  301   b  consecutively arranged such that the pockets  311  are formed consecutively by the boundary portion  306 ; or as shown in  FIGS. 24   a  and  24   b  tension bands  312  are fitted into the pockets  311  at set locations of the front blind cloth  301  to maintain the tension states of the internal and external fabrics  301   a ,  301   b , which will be chosen freely. 
     Next, the operations of the blind device configured according to a third aspect of the present invention will be described. 
     Firstly, as shown in  FIGS. 26   a  and  26   b , the cord line  303  is inserted into the rings  302  in turn that are formed along a vertical direction and a horizontal direction on a back surface of the blind cloth  301  corresponding to the interval L 1  between loops and the length L 2 /2 of a loop to be formed while a blind is assembled, and then one end of the cord line is fixed to the weight  307  together with the front and rear blind cloths  301 ,  309  and the other end thereof is fixed to the winding-rod  305  together with the upper end of the rear blind cloth  309 , thereby completing an assembly of the blind. 
     That is, in  FIGS. 21 and 22  showing one embodiment and another embodiment according to a third aspect of the present invention, the length L 2 /2 of a loop is determined whether how long distance is left when the cord line  303  is inserted into the subsequently disposed-ring  302  after the cord line  303  is inserted into two or more rings  302  that are formed along a vertical direction of the external fabric  301   b  of the blind cloth  301 , which is disposed toward a window. 
     In a state where the blind that is assembled completely (manually or automatically) is arranged on a window, when the cord line  303  is unwound fully from the winding-rod  305  by pulling the adjusting-line  308 , as shown in  FIG. 26   a , the weight  307  is disposed at a bottom dead point so that the loop  304  is not formed on the blind cloth  301 , thereby maintaining a state in which the interior is shielded from exterior. 
     Under this state when the winding-rod  305  is rotated by pulling the adjusting-line  308  by a user, the cord line  303  and the rear blind cloth  309  are wound around the winding-rod  305 , and the weight  307  to which the cord line  303  and the other ends of the blind cloths  301 ,  309  are fixed is raised, and, as a result, the loop  304  is formed at a point where the cord line is passed through a first ring portion  302  from the weight  307 . 
     Subsequently, when the cord Line  303  and the rear blind cloth  309  are wound further around the winding-rod  305  by pulling continuously the adjusting-line  308 , a second loop and a third loop  304  are formed between the ring portions through which the cord line  303  is passed firstly and secondly, as shown in  FIG. 26   b.    
     Here, “the ring portions through which the cord line is passed through firstly and secondly” means, for example, the ring portions  302  which are formed firstly and secondly on the lowest end of the blind cloth  301  and into which die cord line  303  is inserted. 
     While the loop  304  is formed by the ring sets  302  formed on the external fabric  301   b  of a window by pulling the adjusting-line  308 , the texture is not dense since the weft serving as the ring is not entangled with warp and further the ring portion is bulged frontward due to the deformation of the ring  302 . However, in the blind cloth and the blind device using the same according to a third aspect of the present invention, the internal fabric  301   a  is disposed in front of the external fabric  301   b  of a window on which the ring  302  is formed, thereby covering the bulged portion and always maintaining an even state of the blind cloth  301  which is shown from interior. 
     Further, the tension band  312  may be fitted into the pocket  311  at a set location of the front blind cloth  301  thereby to maintain tension states of the internal and external fabrics  301   a ,  301   b , thereby preventing deformations thereof in advance. 
     The tension band  312  may be thin relatively and, if necessary, may be made of synthetic resin, wood, light, metal or the like. 
     Further, a rotation shaft and a bobbin (not shown) may be provided separately in addition to the winding-rod  305  and the cord line  303  may be wound around the bobbin when the rotating shaft rotates. 
     Next, a Roman shade type blind cloth according to a fourth aspect of the present invention will be described, referring to  FIGS. 28 to 32 . When describing the blind cloth according to the fourth aspect, the descriptions of the configurations and operations similar to those of the blind cloth according to a first to third aspects of the present invention are omitted. 
       FIG. 28  is a rear view illustrating an embodiment of a Roman shade type blind cloth according to a fourth aspect of the present invention.  FIG. 29  is a view illustrating a state where the blind cloth of  FIG. 28  is cut depending on a width of a window to be rotated at 90°. 
     As shown in  FIG. 28 , when the Roman shade type blind cloth  431  according to a fourth aspect of the present invention is woven, it is woven such that warps are floated not to be entangled with wefts at a predetermined region, into which a cord line  414  is inserted, to form the ring set  415 . 
     At this time, the warps where the ring set  415  is formed may preferably be LM (Low Melting) yarns or LM mixed yarns such that the warps are not unthreaded when the blind cloth  431  is folded or unfolded in a state where the cord line  414  is inserted into the ring  415 . 
     A prompt operation is possible by coloring the warps with a predetermined color when the warp with a predetermined color is fitted into a heald eye without confirming the colors. Further, a phenomenon where the warps with different colors are mis-fitted inadvertently into the heald eye, like a related art, can be prevented in advance. 
     The blind cloth  431  according to a fourth aspect of the present invention, which is woven as described above, is implemented as various forms by coloring the wefts with different colors at desired regions and displaying different designs therefrom. 
     When the ring sets  415  are woven while the blind cloth  431  is woven, if a step of supplying the cord line  414  as weft and fitting the cord line  414  into the ring sets  415  is further performed, the operation of fitting separately the cord line  414  into the ring sets  415  may be deleted preferably when end product of the Roman shade type blind cloth is produced. 
     Further, when the Roman shade type blind cloth according′ to a fourth aspect of the present invention is woven, a step of hanging the warps with a predetermined color over a beam of a weaving machine (not shown) and fitting the warps strand by strand into the heald eye, and a step of passing the weft between the warps that are divided into two or more groups and separated and striking with a body to weave the blind cloth  531  are performed in turn, which are identical to a conventional weaving method of the blind cloth. 
     However, when the blind cloth  531  according to a fourth aspect of the present invention is woven, it is featured that several strands of warp are floated not to be entangled with weft at predetermined regions S 1 , S 2  into which the cord line  414  is inserted such that the rings  415  of several strands are formed. 
     That is, the rings  415  of several strands are formed within a predetermined region S 1  so that the loops are formed vertically on the blind cloth  431  by the region S 1 . 
     In another embodiment as shown in  FIG. 31 , in the step of hanging the warps over the beam of a weaving machine in turn, the warps are hung such that distance between the warps is increased gradually l 1 &lt;l 2 &lt;l 3 &lt;l 4  . . . so that the rings  415  are formed. At this time, the warp of a strand is floated not to be entangled with weft at a predetermined point into which the cord line is inserted so that the ring  415  of a strand is formed. As shown in  FIG. 32 , in the case of the rings  415  of warp of a strand the distance between warps are increased, gradually l 1 &lt;l 2 &lt;l 3 &lt;l 4  . . . , for example, the ring  415  of the farthest l 4  is raised and then the rings of distances l 3 →l 2 →l 1  are raised in order when the blind cloth  431  is raised such that the loops are formed naturally on the blind cloth  431 . 
     Assuming that the ring is formed with constant distance between warps, the loops cannot be formed naturally vertically and the loops may be formed as a bunch of grapes. However, this phenomenon can be prevented by using the blind cloth according to the embodiment of  FIG. 31 . 
     Next, a device for adjusting the length of a cord line of a Roman shade type blind cloth according a fifth aspect of the present invention will be described, referring to  FIGS. 33 to 40 . When describing the device for adjusting the length of a cord line of a Roman shade type blind cloth according a fifth aspect and fixing the same, the description of the configurations and operations similar to those of the blind cloth and blind device according to a first to fourth aspects as described above are omitted. 
       FIG. 35  is an exploded-perspective view illustrating main components of a device according to a fifth aspect of the present invention,  FIG. 36  is a perspective view illustrating an assembly state of  FIG. 35  and  FIG. 37  is a longitudinal sectional view of  FIG. 36 . 
     It is featured that an insertion hole  511  is formed horizontally at a center of a housing  510  to which a winding-rod  537  or a weight  542  of a device according to a fifth aspect of the present invention is fixed, a taper portion  521  is formed on an adjusting-rod  520  that is inserted into the insertion hole  511  formed on the housing  510 , and a supporting means for supporting a cord line  531  is formed on the adjusting-rod  520  such that the taper portion  521  is pushed forcibly into the insertion hole  511  while the cord line  531  is inserted into the supporting means of the adjusting-rod  520  to fix the cord line  531 , or the length of the cord line  531  is adjusted by rotating the adjusting-rod  520 . 
     The supporting means is provided as a cutaway portion  522  which is formed at a front end of the taper portion  521  and into which the cord line  531  is inserted as in  FIGS. 35 to 38  showing an embodiment according to a fifth aspect of the present invention. The support means may also be provided as a fitting hole  523  which is formed on the taper portion  521  and through which the cord line  531  passes as in  FIG. 40  showing another embodiment or a fitting annular groove (not shown) that is formed on the taper portion  521 . 
     Further, when a head portion  524  is formed on the adjusting-rod  520  and a groove for a cool  525  is formed on the head portion  524 , the length of the cord line  531  can be adjusted conveniently using the tool such as a driver. 
     Additionally, when a catching part  526  is further formed on the cutaway portion  522 , the adjusting-rod  520  can be prevented from being separated from the housing  510  while the adjusting-rod  520  is assembled preliminary to the housing  510 . 
     Meanwhile, when a position determining groove  512  is formed as “−” or “+” shape for determining the location of the cord line  531  at an inlet of the insertion hole  511  formed on the housing  510 , the cord line  531  can be inserted more quickly. When the cord line,  531  is departed from the position determining groove  512 , it is difficult to adjust the length of the cord line and further the cord line  531  is departed from the housing  510  not to determine the position of the cord line  531 . Therefore, the position determining groove serves as a very important factor when adjusting the length of the cord line  531 . 
     In case a hook  513  is formed on an outer circumferential surface of the housing  510  and the hook  513  is caught over mounting grooves  537   a ,  542   b  formed on the winding-rod  537  or the weight  542  and fixed thereto as shown in  FIGS. 39   a  and  39   h , the device according to a fifth aspect of the present invention can be installed more promptly. At this time, the housing  510  is made of synthetic resin having a little elasticity and thus it is contracted or recovered elastically when the housing is fitted into the mounting grooves  537   a ,  542   b . The housing is supported firmly with the hook  513  not to be separated as long as external force does not apply thereto. 
     The operations of the device according to a fifth aspect of the present invention configured as described above will be described. 
     As shown in  FIGS. 33 and 34 , an upper end of a roll-up fabric is fixed to a winding-rod and the lower end thereof is fixed to the weight in a Roman shade type blind. 
     Firstly, moulds  530   a ,  530   b ,  536   a ,  536   b  are fixed to both upper and lower ends of each of a loop forming fabric  530  and a roll-up fabric  536 , respectively, and they are fitted into the mounting grooves  539   a ,  537   a ,  542   a ,  542   b  that are formed on the frame  539 , the winding-rod  537  and the weight  542 , respectively. These operations are identical to those of a related art, and thus the detailed descriptions thereof are omitted. However, it is cleared that the order of assembly is different from that of a related art and thus it needs to understand the device according to a fifth aspect of the present invention. 
     Accordingly, before the upper and lower ends of the loop forming fabric  530  are fitted into the frame  539  and the weight  542 , firstly the cord line  531  is inserted into the ring  532  of the loop forming fabric  530  wherein left and right intervals and the number of the cord line  531  are set corresponding to a width of the loop forming fabric  530 , and the upper and lower ends of each cord line  531  are cut to be longer than a length of the loop forming fabric  530  thereby to be exposed. 
     Further, referring to  FIG. 39   a , in case the mould on the upper end  536   a  of the roll-up fabric  536  is fitted into the mounting groove  537   a  of the winding-rod  537  and fixed thereto and the housing  510  is pushed forcibly into the mounting groove  537   a  corresponding to the left and right intervals and the number of the cord line  531 , the hook  513  of the housing  510  is caught over the mounting groove  537   a  and fixed thereto. At this time, the mould at an upper end  536   a  of the roll-up fabric  536  is supported by the assembly of the housing  510 , thereby maintaining a secure assembly state thereof. 
     After that, the mould  530   a  at an upper end of the loop forming fabric  530  is fitted into the mounting groove  539   a  of the frame,  539  and fixed thereto and then the cord line  531  that is exposed to an upper end of the loop forming fabric  530  is fitted into the cutaway portion  522  of the adjusting-rod.  520  to be pushed into the insertion hole  511  of the housing  510  that has been already inserted into the winding-rod  537 . 
     At this time, the cord line  531  is in close contact between an internal surface of the insertion hole  511  and the taper portion  521  while it is fitted into the cutaway portion  522  of the adjusting-rod  520 . When the adjusting-rod  520  is fitted to an extent not being further inserted, the cord line  531  is in complete close contact between an internal surface of the insertion hole  511  and the taper portion  521  not to be retracted unless the adjusting-rod  520  is separated from the insertion hole  511 . The adjusting-rod  520  has a taper portion  521  that is slanted in a longitudinal direction. As an outer diameter of the adjusting-rod  520  is increased gradually, an inner diameter of the insertion hole  511  is decreased gradually so that the cord line  531  is compressed gradually. As a result, the cord line  531  is disposed between the adjusting-rod  520  and the inserting hole  511  to be in close contact and fixed thereto by the compression force. 
     Each cord line  531  is fixed to the housing  510  by using the adjusting-rod  520 , which is fixed corresponding to the left and right intervals and the number of the cord line  531  and thus each upper end of the loop forming fabric  530  and the roll-up fabric  536  is assembled completely. 
     Further, referring to  FIG. 39   b , the cord line  531  that is exposed to a lower end of the loop forming fabric  530  is fixed such that firstly the mould  536   b  at a lower end of the roll-up fabric  536  is fitted into the mounting groove  542   b  of the weight  542 , similarly to a related art, and then the housing  510  and the adjusting-rod.  520  are fitted into the mounting groove  542   b  of the weight  542  to be assembled, in the same manner as described above. 
     However, it is enough to fix simply the cord line  531  at a side of the winding rod  537  and thus it does not need to adjust separately the length of the cord line, but it needs to adjust the length of the cord line  531  at a side of the weight  542 . 
     Accordingly, when intending to adjust the length of the cord line  531  while the adjusting-rod  520  is fitted into the insertion hole  511  of the housing  510 , the adjusting-rod  520  is retracted slightly from the insertion hole  511  to an extent that the adjust-rod  520  can rotate freely within the insertion hole  511  and then a driver (not shown) is put into the groove for tool  525  formed on the head portion  524  of the adjusting-rod  520 . By using the driver, the adjusting-rod  520  is rotated and the cord line  531  is wound around the taper portion  521  to adjust the length of the cord line  531  such that the loose cord line  531  is be strained tensely, and then the adjusting-rod  520  is pushed completed into the insertion ho e  511 , thereby completing a fixing operation of the cord line  531 . 
     The foregoing is illustrative of example embodiments and is not to be construed as limiting thereof. Although example embodiments have been described, those skilled in the art will readily appreciate that many substitutions, modifications and changes may be made to these embodiments without materially departing from the principles and sprit of the invention.