Curtain structure
The curtain structure addresses sharp-angling and waste issues by using cut holes and a fastening piece with a button and hook design, ensuring a smooth curved surface and easy attachment without a reinforcing sheet.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- KAZUMA
- Filing Date
- 2024-12-23
- Publication Date
- 2026-07-03
AI Technical Summary
Conventional curtain connectors cause sharp-angling of the bent portion of the curtain fabric and require a reinforcing sheet, which is difficult to attach and contributes to waste disposal issues.
A curtain structure with cut holes in the fabric and a specially shaped fastening piece comprising a button part and hook part, allowing easy attachment and eliminating the need for a reinforcing sheet.
The curtain structure forms a large, curved surface at the bent corner without angularization, improves vertical balance, and reduces waste by eliminating the need for a reinforcing sheet, with easy attachment similar to buttoning a shirt.
Smart Images
Figure 2026111413000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a curtain structure A. More specifically, it relates to a curtain structure A that is easy to install, in which the bent portion of the curtain fabric 3 does not become sharp-angled, and a reinforcing sheet S is also unnecessary.
Background Art
[0002] Currently, in offices, houses, etc., curtains are widely used for purposes such as light shielding, sound insulation, partitioning, etc. A curtain generally includes a curtain rail having a slider, a curtain fabric, etc. It has a structure in which the curtain fabric is attached to a slider that can move along the curtain rail and is moved horizontally (left and right directions) to open and close.
[0003] In such a curtain, for example, as disclosed in Patent Document 1 and Patent Document 2, in order to attach the curtain fabric to the slider of the curtain rail, it is necessary to use a connector between the slider and the curtain fabric. In that case, as the connector, a narrow connector formed in an S shape has been conventionally used.
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Patent Document 2
Summary of the Invention
Problems to be Solved by the Invention
[0005] However, such a connector has several problems. Problem 1 (Sharp-angling of the bent portion of the curtain fabric and the necessity of the reinforcing sheet S) In the case of curtains, a connector is attached to the top of the curtain fabric, and when the connector is moved along the curtain rail, the narrow width of the connector causes the attached portion to bend, forming what is known as a drape (also called a wave) in the vertical direction.
[0006] In this case, when the connector is attached to the curtain fabric, the connector is narrow and has a small contact area with the curtain fabric, so it tends to bend sharply at this point, and the bent part of the drape tends to become sharp-angled (see Figure 9(A)). For reference, Figure 9 illustrates the folded portion of the curtain fabric where the connector is attached. Figure 9(A) shows the conventional case without the reinforcing sheet S, Figure 9(B) shows the conventional case with the reinforcing sheet S, and Figure 9(C) shows the present invention using a fastening piece.
[0007] The point where this connector is attached becomes the starting point for the bend, thus forming a corner. In other words, the connectors are attached to the upper edge of the curtain fabric at regular intervals, and the fabric is bent at each interval to form a drape.
[0008] In that case, the folded part at the top has a sharp corner, so the curve of the drape becomes smaller as it goes higher, resulting in an imbalance between the top and bottom. To address the above drawbacks, one method is to attach a reinforcing sheet S, such as a mesh sheet, to the upper edge of the curtain fabric.
[0009] The reinforcing sheet S is attached to the curtain fabric by, for example, folding back the upper edge of the curtain fabric by a certain width and interposing the curtain fabric 3 in between, or by directly sewing the curtain fabric to the reinforcing sheet S. This reinforcing sheet S makes the part to which the connector is attached less likely to bend, and a certain curved surface is formed at the corner (see Figure 9(B)). As a result, the curve of the upper drape becomes larger, and the balance between the upper and lower parts is corrected.
[0010] However, since most of these reinforcing sheets S are made from plastic-based materials, they become a burden to dispose of as waste, which is a drawback. Therefore, there was a strong desire for curtains that did not require reinforcing materials.
[0011] Problem 2 (Difficulty in attaching the hook body) Conventionally, a vertically elongated tunnel hole for attaching a hook is formed at the upper end of the curtain fabric for inserting a connector, but the entrance to this hole is particularly small and difficult to see. Therefore, when attaching the connector to the upper edge of the curtain fabric, inserting the tip of the connector into the tunnel hole for attaching the hook was not easy, and performing the operation efficiently required skill.
[0012] This invention was developed to solve the problems described above. In other words, the object of the present invention is to provide a curtain structure A in which the bent portion is curved rather than at an acute angle (i.e., preventing the bending corner of the curtain fabric 3 from becoming acute), does not require a reinforcing sheet S (i.e., eliminating the need for a reinforcing sheet S), and allows for easy attachment of connectors (i.e., eliminating the difficulty of attaching connectors). [Means for solving the problem]
[0013] To solve the above problems, the inventors of this invention diligently analyzed conventional curtains, including the curtain described in Patent Document 1, and repeatedly conducted trial and error. Furthermore, by providing a cut hole 31 in the curtain fabric 3 and using a specially shaped connector, namely a fastening piece 2, and by having a flat button portion 21 fitted into the cut hole 31 on this fastening piece 2, the folded portion of the curtain fabric 3 does not become sharp, and a reinforcing sheet S is not required (i.e., problem 1 is solved), and the fastening piece 2 can also be easily attached (i.e., problem 2 is solved), we found that this discovery led to the completion of the present invention.
[0014] That is, the present invention provides a curtain structure A comprising a curtain fabric 3, a fastener body 2, and a curtain rail 1. A plurality of cut holes 31 are provided at the upper end 3A of the curtain fabric 3. The fastener body 2 consists of a button part 21, a hook part 23, and a base part 22 connecting the two. The hook part 23 is provided so as to face the button part 21 through the base part 22. The button part 21 is formed in a planar shape, and the hook part 23 extends vertically upward from the base part 22 and is formed in an inverted U shape. The curtain fabric 3 is suspended and supported in a state where the fastener body 2 is attached to the cut hole 31.
[0015] Further, (2) the curtain fabric 3 is interposed so as to be sandwiched between the button part 21 and the hook part 23 in the curtain structure A described in (1) above.
[0016] Further, (3) the button part 21 is circular in the curtain structure A described in (1) above.
[0017] Also, (4) in the curtain structure A described in (1) above, the button part 21 of the fastener body 2 is inserted into the cut hole 31 of the curtain fabric 3 (insertion step), the curtain fabric 3 is interposed so as to be sandwiched between the button part and the hook part, and the curtain fabric is supported at the base part (support step). Then, the hook part 23 of the fastener body 2 is hooked and attached to the curtain rail 1 (hooking step). This is a method for attaching the curtain fabric 3.
[0018] It should be noted that the present invention is also applicable to a configuration in which a plurality of the above technical features (1) to (4) are combined.
Effects of the Invention
[0019] <s> The present invention relates to a curtain structure A comprising (1) a curtain fabric 3, a fastener body 2, and a curtain rail 1. A plurality of cut holes 31 are provided at the upper end 3A of the curtain fabric 3. The fastener body 2 consists of a button part 21, a hook part 23, and a base part 22 connecting the two. The hook part 23 is provided so as to face the button part 21 via the base part 22. The button part 21 is formed in a planar shape (having a certain area), and the hook part 23 extends vertically upward from the base part 22 and is formed in an inverted U shape. The curtain fabric 3 is suspended and supported in a state where the fastener body 2 is attached to the cut holes 31. Therefore, The button part 21 can grasp the curtain fabric 3 by a surface instead of a line as in the conventional case, and a large curved surface is accurately formed at the bent corner part of the drape (that is, the non-angularization of the bent corner part of the curtain fabric 3).
[0020] Also, even without using the reinforcing sheet S, a large and accurate curved surface is formed at the bent corner part of the tack (that is, the unnecessaryness of the reinforcing sheet S). Therefore, the vertical balance in the curtain fabric 3 is improved. Since the reinforcing sheet S is mainly made of a thin plastic material, it does not conform to SDGs when discarded. However, since the curtain of the present invention does not require the reinforcing sheet S at all, the waste is greatly reduced. Attaching the fastener body 2 to the normal cut holes 31 is the same operation as attaching a button to the shirt hole of clothes as usually experienced, and the attachment of the fastener body 2 to the curtain fabric 3 is extremely easy (that is, ease of attachment).
[0021] Further, the present invention relates to a curtain structure A in which (2) the curtain fabric 3 is interposed so as to be sandwiched between the button part 21 and the hook part 23. Therefore, the curved surface of the drape of the curtain fabric 3 does not become angular but becomes a smooth curved surface.
[0022] Furthermore, (3) because the button portion 21 is circular in shape, the circular button portion 21 contacts the curtain fabric 3 in a circular area, thereby preventing the formation of corners in the curtain fabric 3.
[0023] Furthermore, the present invention provides (4) a method for attaching a curtain fabric 3 to a curtain rail 1 in the curtain structure A described in 1 above, characterized by: inserting the button portion 21 of the fastening piece 2 into the cut hole 31 of the curtain fabric 3 (insertion step); interposing the curtain fabric 3 between the button portion and the hook portion to support the curtain fabric at the base (support step); and then hooking the hook portion 23 of the fastening piece 2 onto the curtain rail 1 (hooking step). As such, the button portion 21 has a certain area, allowing the fabric to be grasped as a surface rather than a line, and a large curved surface is accurately formed at the folding corner of the drape.
[0024] Even without using reinforcing sheet S (interlining), the curved surface of the tuck's folded corner is formed to be large and precise. Therefore, the balance between the top and bottom of the curtain fabric 3 improves. The process is the same as attaching a button to a shirt buttonhole, making it extremely easy to attach the fastening piece 2 to the curtain fabric 3. [Brief explanation of the drawing]
[0025] [Figure 1] Figure 1 is a diagram illustrating the curtain structure according to the present invention, where (A) shows the entire curtain structure and (B) shows a magnified view of a part of the curtain structure. [Figure 2] Figure 2 is a diagram illustrating curtain fabric. [Figure 3] Figure 3 shows the retaining piece body, with (A) being a front view, (B) a rear view, (C) a side view, and (D) a perspective view. [Figure 4] Figure 4 shows the fastening piece attached to the curtain fabric, with (A) being a front view, (B) a rear view, and (C) a side view. [Figure 5] Figure 5 shows the relationship between the curtain rail, the fastening piece, and the curtain fabric during installation. [Figure 6] Figure 6 is a flowchart showing how to attach curtain fabric to a curtain rail. [Figure 7] Figure 7 shows examples of button parts, including elliptical, polygonal, and decorative shapes. [Figure 8] Figure 8 illustrates a curtain structure consisting of a cylindrical rail and a ring-shaped slider that moves along the outer circumference of the rail. (A) shows an example in which a separate part with small holes is attached to the ring-shaped slider, and (B) shows an example in which small holes are directly formed in the ring-shaped slider. [Figure 9] Figure 9 illustrates the folded portion of the curtain fabric where the connector is attached, with (A) showing the conventional case without a reinforcing sheet, (B) showing the conventional case with a reinforcing sheet, and (C) showing the present invention using a fastening piece. [Modes for carrying out the invention]
[0026] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary. In the drawings, identical elements will be denoted by the same reference numeral, and redundant explanations will be omitted. Furthermore, unless otherwise specified, positional relationships such as up, down, left, and right shall be based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios in drawings are not limited to those shown.
[0027] The curtain structure A according to the present invention is mainly used by being installed indoors, such as on the inside of doors and windows, for purposes such as light blocking, sound insulation, and partitioning. In this curtain structure A, the curtain fabric 3, which has hooks integrated into it, is moved from side to side (horizontally) along a curtain rail 11 fixed to a wall or ceiling to open and close it.
[0028] Figure 1 is a diagram illustrating the curtain structure A according to the present invention, where (A) shows the entire curtain structure A, and (B) shows a magnified view of a part of the curtain structure A. As shown in Figure 1, the curtain structure A according to this embodiment consists of a curtain fabric 34, a hook body, and a curtain rail 11. Here, the curtain rail 11 is a rail 11 with a slider 12. This curtain rail 11 consists of a rail 11 and a slider 12 that moves along a groove in the rail 11, and can be opened and closed by sliding the curtain fabric 3 in the left-right direction (horizontally).
[0029] In curtain structure A, the curtain fabric 34 is typically formed in a rectangular shape, and a plurality of fastening pieces 2 are attached at predetermined intervals to its upper end 3A (an area having a fixed width vertically). As will be described later, the fastening piece 2 is attached by inserting (fitting) its button portion 21 into a slit hole 31 provided in the curtain fabric 3.
[0030] When viewed from the front, the button portion of the fastening piece 2, which will be described later, is exposed so as to protrude from the curtain fabric 3 21. The retaining piece 2 is then attached to the slider 12 of the curtain rail 11 above it.
[0031] (Curtain fabric 34) Figure 2 is a diagram illustrating curtain fabric 3. The curtain fabric 3 has an upper edge 3A of a certain width at its top, and this upper edge 3A is a reinforced multi-layered fabric section made by overlapping multiple pieces of fabric. Incidentally, conventionally, a reinforcing sheet is attached to this multi-layered fabric section, but this is unnecessary in the present invention. Furthermore, as described above, the upper end portion 3A is provided with cut holes 31 at regular intervals in the left-right direction (lateral direction).
[0032] As shown in the enlarged view, this cut-out hole 31 can be opened to allow the button portion 21 to be inserted. Furthermore, as will be described later, the size of the cut hole 31 is formed to be the same as or larger than the size of the button portion 21 of the retaining piece body 2, because it must be inserted and fitted into the hole. Furthermore, it is preferable that the cut holes 31 are reinforced by overcast stitching around them.
[0033] Here, the materials used for the curtain fabric 3 include natural fibers such as cotton and linen, artificial fibers such as rayon, and synthetic fibers such as polyamide and polyester. The structure may also include knitted fabrics such as warp knitting and circular knitting, woven fabrics, and braided fabrics. Furthermore, it is preferable that the curtain fabric 3 is appropriately provided with functions such as light blocking, heat insulation, heat retention, water repellency, sound insulation, mirror effect, flame retardancy, UV protection, and shape retention. (Fastening piece body 2; button part 21, base part 22, hook part 23). Next, the retaining piece body 2 used in the present invention will be described.
[0034] Figure 3 shows the retaining piece body 2, where (A) is a front view, (B) is a rear view, (C) is a side view, and (D) is an oblique view.
[0035] Figure 4 shows the fastening piece 2 attached to the curtain fabric 3, with (A) being a front view, (B) a rear view, and (C) a side view. The fastening piece body 2 consists of a button portion 21, a base portion 22, and a hook portion 23. The base portion 22 is the part that connects the button portion 21 and the hook portion 23, and its cross-section can be circular (cylindrical) or square (rectangular tube). A hook portion 23 is provided so as to face the button portion 21 via the base portion 22.
[0036] The button portion 21 is planar and has a certain area, and its shape is formed, for example, as a circular plate. Therefore, the button portion 21 can contact the curtain fabric 3 over a certain area in a planar manner. On the other hand, the hook portion 23 extends vertically upward from the base portion 22 and is formed in an inverted U shape. More specifically, the hook portion 23 is formed to extend vertically upward from the base portion 22 (body portion 231), and then fold back downward to extend closer to the base portion 22 (hooking portion 232).
[0037] Here, it can be understood that the position of the curtain fabric 3 will be lower as the hook portion 23 is longer than the body portion 231. By the way, when the fastening piece 2 is attached, the curtain fabric 3 will be interposed between the button portion 21 and the hook portion 23. In other words, when the fastening piece 2 is attached to the cut hole 31 of the curtain fabric 3, its base 22 is inserted through the curtain fabric 3, allowing it to support and suspend the curtain fabric 3 (see Figure 1). Here, the upper part of the base 22 supports the upper edge of the cut hole 31 of the curtain fabric 3.
[0038] Incidentally, the shape of the cross-section of the base 22 is not specified, but for example, if it is rectangular, the cut hole 31 can be supported in a straight line by the upper edge. There is a gap between the button portion 21 and the hook portion 23 that allows the curtain fabric 3 to be interposed. In other words, the base portion 22 is the same as or greater than the thickness of the curtain fabric 3. However, if the width of the base 22 is slightly less than the thickness of the curtain fabric 3, when the fastening piece 2 is attached, pressure is applied between the button part 21 and the hook part 23, which has the effect of tightening the curtain fabric 3.
[0039] Next, we will describe a method for attaching the curtain fabric 3 to the curtain rail 1 in the curtain structure A of the present invention.
[0040] Figure 5 shows the relative mounting relationships between the curtain rail 1, the fastening piece 2, and the curtain fabric 3.
[0041] Figure 6 is a flowchart showing how to attach the curtain fabric 3 to the curtain rail 1.
[0042] The procedure involves first attaching the fastening piece 2 to the curtain fabric 3, widening the cut hole 31 formed in the curtain fabric 3, and then inserting the button part 21 into the cut hole 31 (insertion step).
[0043] Then, the curtain fabric 3 is interposed between the button portion 21 and the hook portion 23 so that the base portion 22 supports the curtain fabric 3 (supporting step). In other words, the curtain fabric 3 is sandwiched between the button portion 21 and the hook portion 23, and the curtain fabric 3 is suspended by the base portion 22.
[0044] In this way, the fastening piece 2 is fitted and attached to the curtain fabric 3. Next, the hook portion 23 of the retaining piece 2 is attached to the slider 12 of the curtain rail 1 by hooking it (hooking process). More specifically, the slider 12 is attached by inserting the tip of the hook portion 232 of the hook portion 23 through the small hole 121 provided in the slider 12. This completes the installation of the curtain fabric 3 onto the curtain rail 1.
[0045] In this completed installation state, the button portion 21 has a certain area, so it grips the curtain fabric 3 as a surface rather than a line. When creating drapes, large curved surfaces are precisely formed at the folding corners (see Figure 9(C)). Even without using reinforcing sheet S (interlining), the curved surface of the tuck's folded corner is formed to be large and precise.
[0046] Although preferred embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above. For example, the shape of the button portion 21 of the fastening piece body 2 is not limited to a circle; an ellipse, polygon, or the like can be used.
[0047] Figure 7 shows examples of button parts 21, such as elliptical, polygonal, and decorative shapes. Furthermore, the surface of the button portion 21 may be decorated with patterns, colors, or other ornaments. Furthermore, variations of the curtain rail 11 can also be adopted. For example, the curtain rail 11 can also be a cylindrical rail 11 and a ring-shaped slider 12 that moves along the outer circumference of the rail 11.
[0048] Figure 8 illustrates a curtain structure A consisting of a cylindrical rail 11 and a ring-shaped slider 12 that moves along the outer circumference of the rail 11. In this case as well, the curtain fabric 3 can be opened and closed by moving it horizontally. The hook portion 23, which is a connector, can be easily attached to the small hole 121 provided in the ring-shaped slider 12. Figure 8(A) shows an example in which a separate part having a small hole 121 is attached to a ring-shaped slider 12. Figure 8(B) also shows an example in which small holes 121 are directly formed in the ring-shaped slider 12. [Industrial applicability]
[0049] The curtain structure A according to the present invention consists of a curtain fabric 3, a fastening piece 2 which is a connecting device, and a curtain rail 11, and is used by being installed indoors, such as on the inside of a door or window, for purposes such as light blocking, sound insulation, or partitioning. According to the curtain structure A of the present invention, the button portion 21 has a certain area, so the fabric can be grasped as a surface rather than a line, and a large curved surface is accurately formed at the folding corner of the drape. Furthermore, even without using reinforcing sheet S (interlining), the curved surface of the folded corner of the tuck is formed to be large and precise.
[0050] (Making the folded portion of the curtain fabric 3 less sharp, and eliminating the need for the reinforcing sheet S) Since the reinforcing sheet S is mainly made of thin plastic material, it does not conform to the SDGs when it is disposed of. However, the curtain of the present invention does not require the reinforcing sheet S at all, so waste is greatly reduced. The process is the same as attaching a button to a shirt buttonhole, making the attachment of the fastening piece 22 to the curtain fabric 3 extremely easy. [Explanation of Symbols]
[0051] 1. Curtain rail (rail with slider) 11...rail 12...Slider 121...small hole 2. Retaining piece body 21... Button section 22...Base 23...Hook part 231... Torso 232...Hook part 3. Curtain fabric 3A...Top end 31...cut holes A... Curtain structure S... Reinforcement Sheet
Claims
1. A curtain structure consisting of curtain fabric, fastening pieces, and a curtain rail, Multiple perforations are provided at the upper end of the aforementioned curtain fabric. The fastening piece comprises a button portion, a hook portion, and a base portion connecting the two, with the hook portion positioned opposite the button portion via the base portion, the button portion being formed in a planar shape, and the hook portion extending vertically upward from the base portion and being formed in an inverted U shape, and the curtain fabric is suspended and supported with the fastening piece attached to the cut hole 31.
2. The curtain structure according to claim 1, characterized in that the curtain fabric is interposed so as to be sandwiched between the button portion and the hook portion.
3. The curtain structure according to claim 1, characterized in that the button portion is circular in shape.
4. A curtain structure according to claim 1, wherein a method for attaching curtain fabric to a curtain rail, Insert the button part of the fastening piece into the cut hole in the curtain fabric (insertion process), The curtain fabric is interposed between the button and hook parts so that it is supported at the base (supporting step). After that, the hook part of the fastening piece is attached by hooking it onto the curtain rail (hooking process). A method for attaching curtain fabric characterized by the following.