JP6526521B2 - Sewing structure and sewing method of shielding material for roman shade - Google Patents

Description

  The present invention relates to a sewing structure of a cloth for a Roman shade shielding material which is attached to an upper end of a head rail and is raised and lowered by a raising and lowering cord so as to be foldable and its sewing method.

  Conventionally, there is disclosed a curtain having a curtain fabric in which a backing material obtained by partially stitching a fabric member is thermocompression-bonded to an outer surface (see, for example, Patent Document 1). In this curtain, the curtain cloth and the operation cord are suspended from the oblong box-shaped head box installed at the top of the window opening in the room, and the curtain cloth is foldable so as to be foldable by pulling the operation cord. It is configured to open and close the unit. The curtain fabric is formed by thermocompression bonding of the outer fabric made of woven or knitted fabric and the back core made of woven or non-woven fabric. Furthermore, a ring tape, which is a woven fabric member, is sewn in the longitudinal direction on the back fabric of the curtain fabric. This ring tape has a first tape which is a wide and long woven tape, and a second tape partially joined to the first tape by thermocompression bonding, and the second tape is narrower than the first tape. The first tape is formed so as to extend in the longitudinal direction of the first tape, and a plurality of locations are joined to the first tape by thermocompression bonding at predetermined intervals.

  In the curtain configured as above, the wide first tape of the ring tape is sewn to the backing material to form a seam, and then the backing material is thermocompression-bonded to the outer material. This thermocompression bonding is performed by attaching a heat fusible material to either the outer surface or the back core. As described above, when the back fabric equipped with the ring tape is thermocompression-bonded to the outer fabric to manufacture a curtain fabric, the seam of the ring tape and the back fabric becomes completely blocked by the outer fabric, and the seam becomes inconspicuous, Light leakage from the seams is substantially prevented at the outer surface. In addition, since the seam of the back and the back is not visible from the outer surface, the pattern of the outer surface and the like is not obstructed by the seam or the leaked light from the back, and the design of the curtain becomes stable and excellent.

JP, 2006-75429, A (claim 1, paragraphs [0019]-[0022], Drawing 1-Drawing 3)

  However, in the curtain disclosed in the above-mentioned conventional Patent Document 1, it is necessary to attach a heat-fusible material to either the back core or the outer surface, that is, heat fusion between the back core and the outer surface. Since it is necessary to sandwich the elastic material, it takes time to manufacture the shielding material, and there is a problem that the number of manufacturing steps of the shielding material increases.

  An object of the present invention is to provide a sewing structure and a sewing method of a shielding material for Roman shade that can increase the light shielding property of the shielding material without using a dedicated component such as a heat-fusible material.

  According to the first aspect of the present invention, as shown in FIGS. 1, 2 and 5, the back surface of the cloth 14 of the shielding member 13 whose upper end is attached to the head rail 12 is horizontally spaced and vertically A plurality of extending plain tapes 17 are sewn, and guide rings 24 are respectively attached to a plurality of guide ring attachment portions 18 provided at intervals in the vertical direction on the plain tapes 17 and hanging from the head rail 12 In the sewing structure of the Roman shade shielding material, which is unfolded so as to be foldable by raising and lowering the lifting cord 16 loosely inserted in the plurality of guide rings 24, the fabric 14 is formed in the same shape and size and is overlapped with each other. The first sewn portion 21 is formed by sewing the rear curtain 14 b and the plain tape 17. The second sewn portion 22 is formed by sewing b and the front curtain 14a, and the first sewn portion 21 is provided at the center in the width direction of the plain tape 17 and extends in the longitudinal direction of the plain tape 17; The second sewing portion 22 is characterized in that it is provided in parallel with the first sewing portion 21 and at a position hidden by the plain tape 17 on both sides of the first sewing portion 21.

  According to the second aspect of the present invention, as shown in FIGS. 7, 8 and 11, the back surface of the cloth 14 of the shielding member 63 whose upper end is attached to the head rail 12 is spaced vertically and horizontally A plurality of extending sharpening tapes 67 are sewn, and guide rings 24 are respectively attached to a plurality of guide ring attaching portions 68 provided at intervals in the vertical direction on the sharpening tapes 67 and hanging from the head rail 12 In the sewing structure of the Roman shade shielding material, which is unfolded so as to be foldable by raising and lowering the lifting cord 16 loosely inserted in the plurality of guide rings 24, the fabric 14 is formed in the same shape and size and is overlapped with each other. The first sewn portion 71 is formed by sewing the rear curtain 14b and the sharpening tape 67, and the rear curtain 14b and the rear curtain 14b are formed. The second sewn portion 72 is formed by sewing the 4b and the front curtain 14a, the first sewn portion 71 is provided extending in the longitudinal direction of the sharp tape 67, and the second sewn portion 72 is formed with the first sewn portion 71. It is characterized in that it is provided in parallel and in a position hidden by the sharpening tape 67 above the first sewing portion 71.

  The third aspect of the present invention is the invention based on the first aspect, and further, as shown in FIG. 6, a light shielding tape 44 capable of blocking light between the trailing blade 14b and the plain tape 47 is interposed. The light shielding tape 44 is sewn together with the trailing blade 14 b and the plain tape 47 to form the first sewn portion 21.

  A fourth aspect of the present invention is the invention based on the second aspect, and further, as shown in FIG. 12, a light shielding tape 94 capable of shielding light between the trailing blade 14b and the sharpening tape 97 is interposed. The light shielding tape 94 is sewn together with the trailing blade 14 b and the sharpening tape 97 to form a first sewn portion 71.

  According to a fifth aspect of the present invention, as shown in FIGS. 1, 2 and 5, the back surface of the cloth 14 of the shielding member 13 whose upper end is attached to the head rail 12 is horizontally spaced and vertically A plurality of extending plain tapes 17 are sewn, and guide rings 24 are respectively attached to a plurality of guide ring attachment portions 18 provided at intervals in the vertical direction on the plain tapes 17 and hanging from the head rail 12 In the sewing method of the shielding member for Roman shade, which is unfolded so as to be foldable by raising and lowering the raising and lowering cords 16 loosely inserted in the plurality of guide rings 24, the fabric 14 is formed in the same shape and size and overlapped with each other. Of the front curtain 14a and the rear curtain 14b, and the rear curtain 14b and the plain tape 17 are positioned at the center of the plain tape 17 in the width direction and A first sewing step of forming the first sewn portion 21 by sewing along the longitudinal direction of the tape 17; and a front curtain 14a on the trailing curtain 14b sewn on the plain tape 17 in the first sewing step; And a second sewing step of forming two second sewing portions 22 by sewing in parallel with the first sewing portion 21 and at positions hidden by the plain tape 17 on both sides of the first sewing portion 21. It is characterized by

  According to the sixth aspect of the present invention, as shown in FIGS. 7, 8 and 11, the back surface of the cloth 14 of the shielding member 63 whose upper end is attached to the head rail 12 is vertically spaced and horizontally spaced A plurality of extending sharpening tapes 67 are sewn, and guide rings 24 are respectively attached to a plurality of guide ring attaching portions 68 provided at intervals in the vertical direction on the sharpening tapes 67 and hanging from the head rail 12 In the sewing method of the shielding member for Roman shade, which is unfolded so as to be foldable by raising and lowering the raising and lowering cords 16 loosely inserted in the plurality of guide rings 24, the fabric 14 is formed in the same shape and size and overlapped with each other. Of the front curtain 14a and the rear curtain 14b, and the rear curtain 14b and the sharpening tape 67 are sewn along the longitudinal direction of the sharpening tape 67. A first sewing process for forming a first sewing section 71 by the first sewing process, and a front curtain 14a on the rear curtain 14b sewn on the sharpening tape 67 in the first sewing process, in parallel with the first sewing section 71 and the first sewing And a second sewing step of forming a second sewn portion 72 by sewing at a position hidden by the sharpening tape 67 above the portion 71.

  A seventh aspect of the present invention is the invention based on the fifth aspect, and as shown in FIG. 6, light can be intercepted between the trailing curtain 14b and the plain tape 47 in the first sewing step. The first sewing portion 21 is formed by sewing the light shielding tape 44 together with the rear curtain 14b and the plain tape 47 with the light shielding tape 44 interposed therebetween.

  An eighth aspect of the present invention is the invention based on the sixth aspect, and as shown in FIG. 12, it is possible to block light between the rear curtain 14b and the sharpening tape 97 in the first sewing step, as shown in FIG. The first sewn portion 71 is formed by sewing the light shielding tape 94 together with the rear curtain 14 b and the sharpening tape 97 with the light shielding tape 94 interposed therebetween.

  In the sewing structure of the shielding member for Roman shade according to the first aspect of the present invention, the first sewing portion formed by sewing the trailing curtain and the plain tape is provided extending in the longitudinal direction of the plain tape, Since the second sewn parts formed by sewing the front curtain are respectively provided at positions concealed by the plain tape on both sides of the first sewn part, pinholes such as perforations and needle holes generated in the first sewn part Can be shielded by the front curtain, and pinholes such as perforations and needle holes produced in the second sewn portion can be shielded by a plain tape. As a result, the light shielding property of the shielding material can be enhanced with a slight increase in the number of manufacturing steps of the shielding material without using a dedicated component such as a heat fusible material.

  In the sewn structure of the Roman shade shielding material according to the second aspect of the present invention, the first sewn portion formed by sewing the trailing curtain and the sharpening tape is provided extending in the longitudinal direction of the sharpening tape. Since the second sewn portion formed by sewing the front curtain is provided parallel to the first sewn portion and at a position hidden by the sharpening tape above the first sewn portion, the perforations formed in the first sewn portion Pin holes such as needle holes and the like can be shielded by the front curtain, and pin holes such as perforations and needle holes generated in the second sewing portion can be shielded by a sharpening tape. As a result, the light shielding property of the shielding material can be enhanced with a slight increase in the number of manufacturing steps of the shielding material without using a dedicated component such as a heat fusible material.

  In the sewing structure of the Roman shade shielding material according to the third aspect of the present invention or the sewing method of the Roman shade shielding member according to the seventh aspect of the present invention, light can be blocked between the rear curtain and the plain tape. A light shielding tape is interposed, and the light shielding tape is sewn along with the rear curtain and the plain tape to form a first sewn portion, so pinholes such as perforations and needle holes produced in the first sewn portion are made by the front curtain. The light shielding tape can shield the pin holes such as the perforations and the needle holes generated in the second sewing portion. As a result, even if a transparent tape or a low light-shielding lace knit is used as the plain tape, the light shielding property of the shielding material can be increased simply by increasing the light shielding tape having a relatively small area.

  In the sewing structure of the Roman shade shielding material according to the fourth aspect of the present invention or the sewing method of the Roman shade shielding member according to the eighth aspect of the present invention, light can be blocked between the rear curtain and the sharpening tape. A light shielding tape is interposed, and this light shielding tape is sewn together with the rear curtain and the tape for sharpening to form a first sewn portion, so pinholes such as perforations and needle holes produced in the first sewn portion are made by the front curtain. The light shielding tape can shield the pin holes such as the perforations and the needle holes generated in the second sewing portion. As a result, even if a transparent tape or a low light-shielding lace-knit tape is used as the sharpening tape, it is possible to increase the light shielding properties of the shielding material only by increasing the light shielding tape having a relatively small area.

  In the method of sewing a Roman shade shielding material according to the fifth aspect of the present invention, the rear curtain and the plain tape are sewn at the center in the width direction of the plain tape and along the longitudinal direction of the plain tape. Forming the first sewn portion by sewing the front curtain sewn on the plain tape with the front curtain parallel to the first sewn portion and at a position hidden by the plain tape on both sides of the first sewn portion Since two second sewing parts are respectively formed by the above, like the sewing structure of the first aspect of the present invention, pinholes such as perforations and needle holes formed in the first sewing part can be shielded by the front curtain. Pin holes such as perforations and needle holes produced in the second sewing section can be shielded by a plain tape. As a result, the light shielding property of the shielding material can be enhanced with a slight increase in the number of manufacturing steps of the shielding material without using a dedicated component such as a heat fusible material.

  In the method of sewing the shielding material for Roman shade according to the sixth aspect of the present invention, after the first sewn portion is formed by sewing the rear curtain and the sharpening tape along the longitudinal direction of the sharpening tape, the sharpening is performed. Since the second sewn portion is formed by sewing the front curtain on the rear curtain sewn to the tape at a position hidden by the sharpening tape parallel to the first sewn portion and above the first sewn portion, the second sewn portion is formed. Similar to the sewing structure of the second aspect of the present invention, pinholes such as perforations and needle holes produced in the first sewn portion can be shielded by the front curtain, and perforations and needle holes produced in the second sewn portion Pin holes can be shielded by a sharp tape. As a result, the light shielding property of the shielding material can be enhanced with a slight increase in the number of manufacturing steps of the shielding material without using a dedicated component such as a heat fusible material.

It is an important section section lineblock diagram showing the sewing procedure of the shielding material for Roman shades of the 1st embodiment of the present invention. It is the A section enlarged perspective view of FIG. It is the BB sectional drawing of FIG. It is the CC sectional view taken on the line of FIG. It is a perspective view of a Roman shade which shows the state which developed the shielding material. It is an important section section lineblock diagram corresponding to Drawing 1 showing the 2nd embodiment of the present invention. It is an important section section lineblock diagram showing the sewing procedure of the shielding material for Roman shades of the 3rd embodiment of the present invention. It is the D section enlarged perspective view of FIG. It is the EE sectional view taken on the line of FIG. It is the FF sectional view taken on the line of FIG. It is a perspective view of a Roman shade which shows the state which developed the shielding material. It is a principal part cross-section block diagram corresponding to FIG. 6 which shows this invention 4th Embodiment.

  Next, an embodiment of the present invention will be described based on the drawings.

First Embodiment
As shown in FIG. 5, the Roman shade 11 has a head rail 12 attached to a wall or ceiling of a room through a fixing bracket (not shown), and an upper end attached to the head rail 12. It comprises a cloth 14 of the shielding material 13 having the same width, and a lifting cord 16 which is vertically lowered from the head rail 12 and whose lower end is connected to the lower part of the cloth 14. The shielding material 13 includes the above-described fabric 14 formed of cloth, fabric or the like, and a plurality of plain tapes 17 provided on the back surface of the fabric 14 at intervals in the horizontal direction and extending in the vertical direction. It has the guide ring attaching part 18 provided in the perpendicular direction at intervals in the tape 17 for plains (FIGS. 1-4). The fabric 14 is composed of a front curtain 14a and a rear curtain 14b which are formed in the same shape and size and are superimposed on each other, the front curtain 14a is provided on the indoor side, and the rear curtain 14b is provided on the window side. Also, the plain tape 17 is sewn on the back surface of the cloth 14, ie, the face opposite to the window of the rear curtain 14b so as to face the lifting cord 16 hanging down from the head rail, and the guide ring attachment portion 18 is for plain The ring of the guide ring mounting portion 18 is formed to be accommodated in a plane passing through the center in the width direction of the tape 17 and orthogonal to the plane including the plain tape 17. Furthermore, in this embodiment, the front curtain 14a, the rear curtain 14b, and the plain tape 17 are formed of a cloth, fabric, or the like having a light shielding property that does not transmit light.

  As shown in FIGS. 1 and 2, the first sewn portion 21 is formed by sewing the trailing blade 14 b and the plain tape 17. The first sewing portion 21 is located at the center in the width direction of the plain tape 17 and extends in the longitudinal direction of the plain tape 17. Thus, the plain tape 17 is provided to extend in the vertical direction on the surface of the rear curtain 14b facing the window. Further, the second sewn portion 22 is formed by sewing the rear curtain 14b and the front curtain 14a. Specifically, the second sewn portion 22 is formed by sewing the front curtain 14a on the surface of the rear curtain 14b opposite to the surface on which the plain tape 17 is sewn. The second sewing portion 22 is provided parallel to the first sewing portion 21 and at a position hidden by the plain tape 17 on both sides of the first sewing portion 21. Furthermore, in this embodiment, the shielding member 13 is a plain-style shielding member in which the plain tape 17 which is horizontally spaced and extends in the vertical direction is sewn to the trailing blade 14b. In this plain style shielding member 13, the fabric 14 is lifted at a point on the guide ring attachment portion 18 as the elevation cord 16 is lifted, so that the fabric is placed between the adjacent guide ring attachment portions 18 in the horizontal plane Some slack occurs in 14 and a soft impression appears.

  As shown in FIG. 5, the head rail 12 has a rail body 12a made by extrusion or pultrusion of a metal such as an aluminum alloy, and lids 12b provided at both ends of the rail body 12a. A plurality of cord insertion members 23 are accommodated in the head rail 12 at intervals in the longitudinal direction of the head rail 12. Then, the elevation cords 16 are respectively inserted into the cord insertion members 23, and the elevation cords 16 are suspended from the cord insertion members 23 along the back surface of the shielding member 13. Further, among the plurality of guide ring attachment portions 18 provided at intervals in the vertical direction along the plain tape 17, the elevation cords are attached to the plurality of guide ring attachment portions 18 excluding the guide ring attachment portion 18 at the lowermost end. A guide ring 24 for guiding 16 is attached, and a cord stopper 26 is attached to the lowermost guide ring attachment 18. The guide ring 24 has a fitting ring 27 fitted into the guide ring attachment 18 and a loosely inserted ring 28 provided integrally with the fitting ring 27 and into which the lifting cord 16 is loosely inserted. Reference numeral 29 in FIG. 5 is a weight bar provided at the lower edge of the shielding member 13.

  As shown in detail in FIGS. 2 to 4, the loosely inserted ring portion 28 is a straight line passing through the centers of the respective ring holes 27 a and 28 a of the inserted ring portion 27 and the loosely inserted ring portion 28 of the loosely inserted ring portion 28. The end of the fitting ring portion 27 and the connection portion of the loose insertion ring portion 28 are separated on the opposite side, whereby the loose insertion ring portion 28 is divided into a pair of arms 28 b and 28 c. Then, a protrusion 28d is provided at the end of one of the arms 28b and 28c at one end of the arm 28b, and a recess 28e is formed at the end of the other arm 28c. Then, when a load equal to or greater than a predetermined value in the direction of moving the lifting cord 16 away from the shielding member 13 acts on the lifting cord 16, the pair of arms 28b, 28c elastically deforms, and the protrusion 28d separates from the recess 28e. It is configured such that the part where 28 d is separated can be pushed out by the lifting cord 16. Moreover, the insertion port 27b is formed in the insertion ring part 27 (FIG.2 and FIG.3). The insertion port 27 b is formed by cutting out a part of the insertion ring 27 in order to insert the insertion ring 27 into the guide ring attachment 18. Although this insertion opening 27 b can easily insert the insertion ring 27 into the guide ring attachment 18, the insertion ring 27 once inserted into the guide ring attachment 18 can not be easily detached from the guide ring attachment 18. It has become. Furthermore, the cord fastener 26 (FIG. 5) attached to the lowermost guide ring attachment portion 18 includes a first member (not shown) attached to the lowermost guide ring attachment portion 18, and one end of the lifting cord A second member for locking and a connecting member for releasably connecting the first member and the second member. Then, when a load equal to or greater than a predetermined value acts on the lifting cord 16, the first member separates from the second member and separates one end of the lifting cord 16 from the shield 13.

  The sewing method of the shielding material 13 comprised in this way is demonstrated. First, as shown in FIG. 1A, the rear curtain 14b and the plain tape 17 are sewn at the center in the width direction of the plain tape 17 and along the longitudinal direction of the plain tape 17. (1) Forming the sewing portion 21 (first sewing step). Sewing to form the first sewing portion 21 is preferably performed using a sewing machine (not shown) having one sewing needle 31. Next, as shown in FIG. 1 (b), the front curtain 14a is attached to the rear curtain 14b sewn to the plain tape 17 in the first sewing step, and the both edges of the plain tape 17 with a jig (not shown). The two second sewing portions 22 and 22 are formed by sewing in parallel with the first sewing portion 21 and at positions hidden by the plain tape 17 on both sides of the first sewing portion 21 while lifting the 2 sewing process). It is preferable that the sewing for forming the second sewing portions 22 and 22 be simultaneously performed using a sewing machine (not shown) having two sewing needles 32 and 32 arranged at intervals, with good working efficiency. . In this case, it is preferable to attach a jig for lifting the side edges of the plain tape 17 to the sewing machine and sew while lifting the side edges of the plain tape 17 with this jig. Although the working efficiency is slightly reduced, the sewing for forming the second sewing portion may be performed twice by a sewing machine having one sewing needle. In this case, a jig for lifting the side edge of the plain tape is attached to the sewing machine, and the jig is used to sew while lifting the side edge of the plain tape, or a worker who operates the sewing machine takes the side edge of the plain tape. You can sew while lifting. When the shielding member 13 is removed from the sewing machine after forming the second sewn parts 22, 22, the side edges of the plain tape 17 adhere closely to the rear curtain 14b, and the second sewn parts 22, 22 are hidden by the plain tape 17. (FIG. 1 (c)).

  Attach the upper end of the shield 13 sewn in this way to the head rail 12, attach the guide rings 24 to the plurality of guide ring attachment parts 18 respectively, and attach the cord stopper 26 to the guide ring attachment part 18 at the lowermost end. The elevating cord 16 hanging down from the head rail 12 is loosely inserted into a plurality of guide rings 24, and further, with the lower end of the elevating cord 16 attached to the cord stopper 26, the elevating cord 16 is lowered to expand the shielding material 13. Do. At this time, even if sunlight or the like is inserted from the window and applied to the rear curtain 14b of the shielding member 13, pinholes such as perforations and needle holes formed in the first sewing portion 21 can be shielded by the front curtain 14a. Pin holes such as perforations and needle holes formed in the sewing portions 22 and 22 can be shielded by the plain tape 17. As a result, it is possible to increase the light shielding property of the shielding material 13 with a slight increase in the number of manufacturing steps of the shielding material 13 without using a dedicated component such as a heat fusible material.

Second Embodiment
FIG. 6 shows a second embodiment of the present invention. In FIG. 6, the same reference numerals as in FIG. 1 denote the same parts. In this embodiment, a light shielding tape 44 capable of blocking light is interposed between the rear curtain 14b and the plain tape 47, and the light shielding tape 44 is sewn together with the rear curtain 14b and the plain tape 17 to perform the first sewing. The portion 21 is formed. Here, the reason why the light shielding tape 44 is interposed is that the transparent tape or the one with a low light shielding property is used as the plain tape 47. Except for the above, the configuration is the same as that of the first embodiment.

  In the sewing method of the shielding member 43 configured as described above, in the first sewing step of the first embodiment, the light shielding tape 44 capable of shielding light is interposed between the rear curtain 14 b and the plain tape 47. Then, the first sewn portion 21 is formed by sewing the light shielding tape 44 together with the trailing blade 14 b and the plain tape 47. The sewing method other than the above is substantially the same as the sewing method of the first embodiment, and thus the repeated description will be omitted.

  Attach the upper end of the shielding material 43 sewn in this way to the head rail, attach the guide rings to the multiple guide ring attachment parts 18 respectively, attach the cord stopper to the guide ring attachment part 18 at the lowest end, and The hanging up and down cords are loosely inserted into a plurality of guide rings, and further, with the lower ends of the up and down cords attached to the cord stopper, the up and down cords are lowered to expand the shielding member 43. At this time, even if sunlight or the like is inserted from the window and applied to the rear curtain 14b of the shielding member 43, pinholes such as perforations and needle holes formed in the first sewing portion 21 can be shielded by the front curtain 14a. Pin holes such as perforations and needle holes formed in the sewn parts 22 and 22 can be shielded by the light shielding tape 44. As a result, even if a transparent tape or a low light-shielding lace-knit is used as the plain tape 17, the light shielding property of the shielding material 43 can be increased simply by increasing the light shielding tape 44 having a relatively small area. Can.

Third Embodiment
7 to 11 show a third embodiment of the present invention. In FIGS. 7 to 11, the same reference numerals as in FIGS. 1 to 5 denote the same parts. In this embodiment, a shielding material 63 is a cloth 14 formed of cloth, fabric or the like, and a plurality of sharpening tapes 67 provided on the back surface of the cloth 14 so as to extend in the vertical direction and extend horizontally. And guide ring attachment portions 68 provided at intervals in the vertical direction on these sharpening tapes 67 (FIGS. 7 to 10). Also, the sharpening tape 67 is sewn on the back surface of the cloth 14, that is, the surface facing the window of the rear curtain 14b. Furthermore, the guide ring attachment portion 68 is connected to the lower edge of the sharpening tape 67 so that the ring of the guide ring attachment portion 68 fits in a vertical plane in a plane perpendicular to the plane including the sharpening tape 67 (FIGS. 7-9).

  As shown in FIGS. 7 and 8, the first sewn portion 71 is formed by sewing the trailing blade 14 b and the sharpening tape 67. The first sewing portion 71 is provided to extend in the longitudinal direction of the sharpening tape 67. As a result, the sharpening tape 67 is provided extending in the vertical direction on the surface facing the window of the rear curtain 14b. Further, the second sewn portion 72 is formed by sewing the rear curtain 14b and the front curtain 14a. Specifically, the second sewn portion 72 is formed by sewing the front curtain 14a on the side opposite to the side of the rear curtain 14b on which the sharpening tape 67 is sewn. The second sewing portion 72 is provided parallel to the first sewing portion 71 and at a position hidden by the sharpening tape 67 above the first sewing portion 71. Furthermore, in this embodiment, the shielding member 63 is a shielding member of a sharp style in which the rear end 14b is sewn on the trailing blade 14b by a sharpening tape 67 which is spaced in the vertical direction and extends in the horizontal direction. In this sharp-style shielding member 63, since the sewn portion of the shielding member 63, which is more rigid than the other portions of the shielding member 63, is sequentially lifted as the lifting cord 16 ascends, in the horizontal plane Slack does not occur in the fabric between the adjacent guide ring attachment portions 68, and a linear fold appears. Except for the above, the configuration is the same as that of the first embodiment.

  A method of sewing the shielding material 63 of the Roman shade 61 configured as described above will be described. First, as shown in FIG. 7A, the first sewn portion 71 is formed by sewing the trailing blade 14b and the sharpening tape 67 along the longitudinal direction of the sharpening tape 67 (first sewing process) ). Sewing to form the first sewing portion 71 is preferably performed using a sewing machine (not shown) having one sewing needle 81. Next, as shown in FIG. 7B, the front curtain 14a is sewn to the trailing blade 14b sewn on the sharpening tape 67 in the first sewing process, and the upper edge of the sharpening tape 67 with a jig (not shown) The second sewing portion 72 is formed by sewing at a position hidden by the sharpening tape 67 in parallel with the first sewing portion 71 and above the first sewing portion 71 while lifting up the second sewing portion 72 (second sewing step). The sewing for forming the second sewing portion 72 is performed by attaching a jig for lifting the upper edge of the sharp tape 67 to a sewing machine (not shown) and lifting the upper edge of the sharp tape 67 with this jig. Or, preferably, the operator operating the sewing machine lifts the upper edge of the sharpening tape 67. When the shielding member 63 is removed from the sewing machine after the formation of the second sewn portion 72, the upper edge of the sharpening tape 67 is in close contact with the rear curtain 14b, and the second sewing portion 72 is hidden by the sharpening tape 67 (FIG. c)).

  Attach the upper end of the shielding member 63 sewn in this way to the head rail 12, attach the guide rings 24 to the plurality of guide ring attachment parts 68, and attach the cord stopper 23 to the lowermost guide ring attachment part 68. The elevating cord 16 hanging down from the head rail 12 is loosely inserted into a plurality of guide rings 24, and further, with the lower end of the elevating cord 16 attached to the cord stopper 26, the elevating cord 16 is lowered to expand the shielding member 63. Do. At this time, even if sunlight or the like is inserted from the window and irradiated to the rear curtain 14b of the shielding member 63, pinholes such as perforations and needle holes formed in the first sewing portion 71 can be shielded by the front curtain 14a. Pin holes such as perforations and needle holes formed in the sewn portion 72 can be shielded by a sharpening tape 67. As a result, the light shielding property of the shielding material 63 can be enhanced with a slight increase in the number of manufacturing steps of the shielding material 63 without using a dedicated component such as a heat fusible material.

Fourth Embodiment
FIG. 12 shows a fourth embodiment of the present invention. In FIG. 12, the same reference numerals as in FIG. 7 denote the same components. In this embodiment, a light shielding tape 94 capable of blocking light is interposed between the rear curtain 14b and the sharpening tape 97, and the light shielding tape 94 is sewn together with the rear curtain 14b and the sharpening tape 97 to perform the first sewing. Portions 71 are formed. Here, the reason why the light shielding tape 94 is interposed is that a transparent tape or a low light shielding lace knit is used as the sharpening tape 97. The configuration other than the above is the same as that of the third embodiment.

  In the method of sewing the shielding member 93 configured as above, in the first sewing step of the third embodiment, a light shielding tape 94 capable of shielding light is interposed between the rear curtain 14b and the sharpening tape 97. Then, the first sewn portion 71 is formed by sewing the light shielding tape 94 together with the trailing blade 14 b and the sharpening tape 97. The sewing method other than the above is substantially the same as the sewing method according to the third embodiment, and thus the repetitive description will be omitted.

  Attach the upper end of the shield 93 sewn in this way to the head rail, attach the guide rings to the multiple guide ring attachment parts 68, attach the cord stopper to the guide ring attachment part 68 at the lowest end, and The hanging up and down cords are loosely inserted into a plurality of guide rings, and further, with the lower ends of the up and down cords attached to the cord stopper, the up and down cords are lowered to expand the shield 93. At this time, even if sunlight or the like is inserted from the window and applied to the rear curtain 14b of the shielding member 93, pinholes such as perforations and needle holes formed in the first sewing portion 71 can be shielded by the front curtain 14a. Pin holes such as perforations and needle holes formed in the sewn portion 72 can be shielded by the light shielding tape 94. As a result, even if a transparent tape or a low light-shielding lace-knit tape is used as the sharpening tape 97, the light shielding property of the shielding material 93 can be increased simply by increasing the light shielding tape 94 having a relatively small area. Can.

DESCRIPTION OF SYMBOLS 11 Roman shade 12 Head rail 13, 43, 63, 93 Shielding material 14 Fabric 14a Front curtain 14b Rear curtain 16 Elevating cord 17, 47, 67, 97 Tape for plain 18, 68 Guide ring attachment part 21, 71 1st sewing part 22, 72 Second sewing part 24 Guide ring 44, 94 Light shielding tape

Claims (8)

A plurality of horizontally spaced and vertically extending plain tapes are sewn on the back surface of the shielding material fabric whose upper end is attached to the head rail, and the plain tapes are provided with a vertical interval. A guide ring is attached to each of a plurality of guide ring attachment portions, and the shield for Roman shade is developed so as to be foldable by raising and lowering an elevation cord suspended from the head rail and loosely inserted in the plurality of guide rings. In the sewing structure of the material,
Said dough consists of a front curtain and a rear curtain which are formed isomorphously and are superimposed on one another,
A first sewn portion is formed by sewing the rear curtain and the plain tape.
A second sewn portion is formed by sewing the rear curtain and the front curtain,
The first sewing portion is provided at the center in the width direction of the plain tape and extends in the longitudinal direction of the plain tape.
A sewing structure of a shielding member for Roman shade, wherein the second sewing portion is provided in parallel with the first sewing portion and at positions hidden by the plain tape on both sides of the first sewing portion. A plurality of vertically spaced and horizontally extending sharpening tapes are sewn on the back surface of the shielding material fabric whose upper end is attached to the head rail, and these sharpening tapes are vertically spaced. A guide ring is attached to each of a plurality of guide ring attachment portions, and the shield for Roman shade is developed so as to be foldable by raising and lowering an elevation cord suspended from the head rail and loosely inserted in the plurality of guide rings. In the sewing structure of the material,
Said dough consists of a front curtain and a rear curtain which are formed isomorphously and are superimposed on one another,
A first sewn portion is formed by sewing the rear curtain and the sharpening tape,
A second sewn portion is formed by sewing the rear curtain and the front curtain,
The first sewing portion is provided to extend in the longitudinal direction of the sharpening tape,
A sewing structure for a shielding member for Roman shade, wherein the second sewing portion is provided in parallel with the first sewing portion and at a position hidden by the sharpening tape above the first sewing portion.   A light shielding tape capable of blocking light is interposed between the rear curtain and the plain tape, and the light shielding tape is sewn together with the rear curtain and the plain tape to form a first sewn portion. The sewing structure of the shielding material for roman shades of 1.   A light shielding tape capable of blocking light is interposed between the rear curtain and the sharpening tape, and the light shielding tape is sewn together with the rear curtain and the sharpening tape to form a first sewn portion. The sewing structure of the shielding material for roman shades of 1. A plurality of horizontally spaced and vertically extending plain tapes are sewn on the back surface of the shielding material fabric whose upper end is attached to the head rail, and the plain tapes are provided with a vertical interval. A guide ring is attached to each of a plurality of guide ring attachment portions, and the shield for Roman shade is developed so as to be foldable by raising and lowering an elevation cord suspended from the head rail and loosely inserted in the plurality of guide rings. In the method of sewing materials,
Said dough consists of a front curtain and a rear curtain which are formed isomorphously and are superimposed on one another,
A first sewing step of forming a first sewn portion by sewing the rear curtain and the plain tape at the center in the width direction of the plain tape and along the longitudinal direction of the plain tape;
The front curtain is sewn to the rear curtain sewn on the plain tape in the first sewing step at a position where the front curtain is parallel to the first sewn part and hidden by the plain tape on both sides of the first sewn part And a second sewing step of forming two second sewing parts respectively by sewing. A plurality of vertically spaced and horizontally extending sharpening tapes are sewn on the back surface of the shielding material fabric whose upper end is attached to the head rail, and these sharpening tapes are vertically spaced. A guide ring is attached to each of a plurality of guide ring attachment portions, and the shield for Roman shade is developed so as to be foldable by raising and lowering an elevation cord suspended from the head rail and loosely inserted in the plurality of guide rings. In the method of sewing materials,
Said dough consists of a front curtain and a rear curtain which are formed isomorphously and are superimposed on one another,
A first sewing step of forming a first sewn portion by sewing the rear curtain and the sharpening tape along the longitudinal direction of the sharpening tape;
The front curtain is sewn to the rear curtain sewn on the sharpening tape in the first sewing process at a position where it is hidden by the sharpening tape parallel to the first sewing part and above the first sewing part And a second sewing step of forming a second sewn portion by sewing the shielding material for Roman shade.   In the first sewing step, a light shielding tape capable of blocking light is interposed between the rear curtain and the plain tape, and the light shielding tape is sewn together with the rear curtain and the plain tape. The sewing method of the shielding material for roman shades according to claim 5 which forms a sewing part.   In the first sewing step, a light shielding tape capable of blocking light is interposed between the rear curtain and the sharpening tape, and the light shielding tape is sewn together with the rear curtain and the sharpening tape. The sewing method of the shielding material for roman shades of Claim 6 which forms a sewing part.

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