KR102606769B1 - Multi core cushion and method of manufacturing the same - Google Patents

Abstract

The present invention relates to a cushion inner tube having a multi-core structure and a manufacturing method thereof. In particular, a first filling space is formed inside so that the filling material does not come off or tilt even when used for a long period of time and the firmness due to the filling material can be continuously maintained. and a first inner tube with a first inlet formed on one side; A second inner barrel is formed larger than the first inner barrel and has a second filling space formed therein, and the first inner barrel is accommodated in the second filling space, wherein the first inner barrel has one edge of the second inner barrel. and the second inner tube is provided with a second zipper that opens and closes the second entrance while a second entrance is formed on the other side, and the first inner tube and the second inner tube have one edge of the butt against the first zipper. The present invention relates to a cushion inner tube having a multi-core structure, wherein only the first inlet can be opened and closed, and a method of manufacturing the same.

Description

Cushion inner tube with multi-core structure and manufacturing method thereof {Multi core cushion and method of manufacturing the same}

The present invention relates to a cushion inner tube having a multi-core structure and a method of manufacturing the same. In particular, it relates to a cushion inner tube having a multi-core structure and a manufacturing method thereof to prevent the filling material filled inside from slipping or tilting.

In general, a pillow used to comfortably support the head when lying down or a cushion used to support the back when resting consists of an inner tube filled with a filling material such as cotton, and a cover surrounding the inner tube. In pillows or cushions constructed in this way, during use, the filling material comes off (a phenomenon in which the firmness of the filling material, such as cotton, decreases) or is tilted to one side, making that part flatter than usual and other parts becoming uneven.

In order to prevent the filling material from slipping or leaning, the inner barrel is divided into two plane sections to form multiple layers or the outer shape is changed to be ergonomically manufactured to make it functional. However, although this inner tube provides comfort and softness to the user, there is a problem that the filling material does not continuously maintain the firmness at the time of initial charging, so the filling material still falls out or is tilted during long-term use.

1. Republic of Korea Patent No. 10-1795190 ‘Pillow cover and pillow using the same’

The purpose of the present invention is to solve the above problems, and to provide a cushion inner tube with a multi-core structure and a manufacturing method thereof that can continuously maintain the firmness due to the filling material by preventing the filling material from slipping or leaning even when used for a long period of time. there is.

The present invention for achieving the above object is a cushion inner cylinder having a multi-core structure, a first inner cylinder having a first filling space formed therein and a first inlet formed on one side; A second inner barrel is formed larger than the first inner barrel and has a second filling space formed therein, and the first inner barrel is accommodated in the second filling space, wherein the first inner barrel has one edge of the second inner barrel. and the second inner tube is provided with a second zipper that opens and closes the second entrance while a second entrance is formed on the other side, and the first inner tube and the second inner tube have one edge of the butt against the first zipper. It is formed so that only the first entrance can be opened and closed.

In addition, it further includes a third inner barrel that is larger than the second inner barrel, has a third filling space formed therein, and accommodates the second inner barrel in the third filling space, wherein the third inner barrel has a third inlet on one side. A third zipper is provided to open and close the third entrance as it is formed, the other edge of the second inner barrel abuts the other edge of the third inner barrel, and the second inner barrel and the third inner barrel have the other edge facing against the other edge of the third inner barrel. It may be formed so that only the second entrance can be opened and closed by the second zipper.

In addition, the first inner tube may be formed to be cut from a point spaced a predetermined distance from one edge toward the other edge, so that the remaining portion excluding one side is divided into a plurality of pieces.

In addition, it further includes a fourth inner barrel that is smaller than the first inner barrel and accommodates a filling material therein, and the fourth inner barrel may be provided in the first filling space.

Meanwhile, the present invention's method of manufacturing a cushion inner tube having a multi-core structure to achieve the above object includes a fabric preparation step of preparing two sheets of first fabric and two sheets of second fabric larger than the first fabric; A fabric fixing step of inserting two sheets of first fabric between two sheets of second fabric, so that one edge of the first fabric and one edge of the second fabric are abutted; A first entrance forming step of sewing a first zipper to one edge of the first fabric and one edge of the second fabric that are joined together to form a first entrance that is opened and closed only between the two first fabrics by the first zipper; A first inner tube completion step of installing a first zipper on two pieces of first fabric and sewing the edges excluding the sewn portion to form a first inner tube; A second entrance forming step of sewing a second zipper to the other edge of the two sheets of second fabric to form a second entrance that is opened and closed between the two sheets of second fabric by the second zipper; It includes a second inner barrel completion step of installing a first zipper and a second zipper on two pieces of second fabric and sewing the edges excluding the sewn portion to form a second inner barrel.

In addition, in the fabric preparation step, two third fabrics larger in size than the second fabric are further prepared, and before the second inlet forming step, two sheets of the first inner tube are located on the inside between the two third fabrics. It further includes an additional fabric fixing step of inserting the second fabric of the sheet so that the other edge of the second fabric and the other edge of the third fabric are abutted, wherein the second entrance forming step is performed on the other side of the second fabric butted against each other. A second zipper is sewn on the edge and the other edge of the third fabric to form a second entrance that opens and closes only between the two sheets of second fabric by the second zipper. After the second inner tube completion step, the two sheets of third fabric are sewn. A third entrance forming step of sewing a third zipper to one edge of the fabric to form a third entrance that opens and closes between the two third sheets of fabric by the third zipper; It may further include a third inner tube completion step of installing a second zipper and a third zipper from two pieces of third fabric and sewing the edges excluding the sewn portion to form a third inner tube.

According to the present invention, a multi-core structure can be formed by allowing fillers to be introduced into inner barrels of different sizes and allowing smaller inner barrels to be accommodated in larger inner barrels, thereby maintaining the elastic repulsion force between each inner barrel and the filler. As the resistance to preservation increases, the filling material does not come off or tilt even if used for a long period of time, and the firmness caused by the filling material can be continuously maintained.

1 is a perspective view showing a cushion inner tube having a multi-core structure according to the present invention according to an embodiment;
Figure 2 is a view showing the front and cross-section of a cushion inner tube having a multi-core structure of the present invention according to an embodiment;
Figure 3 is a perspective view showing a modified example of the cushion inner tube having a multi-core structure of the present invention according to an embodiment;
Figure 4 is a view showing the front and cross-section of a modified example of the cushion inner tube having a multi-core structure according to the present invention according to an embodiment;
Figure 5 is a perspective view showing another modified example of the cushion inner tube having a multi-core structure of the present invention according to an embodiment;
Figure 6 is a perspective view showing a cushion inner tube having a multi-core structure of the present invention according to another embodiment;
Figure 7 is a view showing the front and cross-section of a cushion inner tube having a multi-core structure of the present invention according to another embodiment;
Figure 8 is a perspective view showing a modified example of the cushion inner tube having a multi-core structure of the present invention according to another embodiment;
Figure 9 is a view showing the front and cross-section of a modified example of the cushion inner tube having a multi-core structure according to the present invention according to another embodiment;
Figure 10 is a flowchart showing a method of manufacturing a cushion inner tube having a multi-core structure according to the present invention according to an embodiment;
Figure 11 is an example showing the process of manufacturing a cushion inner tube by the method of manufacturing a cushion inner tube having a multi-core structure according to the present invention according to an embodiment;
Figure 12 is a flowchart showing a method of manufacturing a cushion inner tube having a multi-core structure according to the present invention according to another embodiment;
Figures 13 and 14 are exemplary diagrams showing the process of manufacturing a cushion inner tube by the method of manufacturing a cushion inner tube having a multi-core structure according to the present invention according to another embodiment.

In the present invention, a first filling space is formed inside and a first inlet is formed on one side so that the filling material does not come off or tilt even when used for a long period of time and the firmness due to the filling material can be continuously maintained; A second inner barrel is formed larger than the first inner barrel and has a second filling space formed therein, and the first inner barrel is accommodated in the second filling space, wherein the first inner barrel has one edge of the second inner barrel. and the second inner tube is provided with a second zipper that opens and closes the second entrance while a second entrance is formed on the other side, and the first inner tube and the second inner tube have one edge of the butt against the first zipper. We propose a cushion inner tube with a multi-core structure, which is formed so that only the first inlet can be opened and closed.

In addition, a fabric preparation step of preparing two sheets of first fabric and two sheets of second fabric larger in size than the first fabric; A fabric fixing step of inserting two sheets of first fabric between two sheets of second fabric, so that one edge of the first fabric and one edge of the second fabric are abutted; A first entrance forming step of sewing a first zipper to one edge of the first fabric and one edge of the second fabric that are joined together to form a first entrance that is opened and closed only between the two first fabrics by the first zipper; A first inner tube completion step of installing a first zipper on two pieces of first fabric and sewing the edges excluding the sewn portion to form a first inner tube; A second entrance forming step of sewing a second zipper to the other edge of the two sheets of second fabric to form a second entrance that is opened and closed between the two sheets of second fabric by the second zipper; A cushion having a multi-core structure, comprising a second inner tube completion step of installing a first zipper and a second zipper on two pieces of second fabric and sewing the edges excluding the sewn portion to form a second inner tube. We propose a manufacturing method for inner barrels.

The scope of the present invention is not limited to the embodiments described below, and various modifications may be made by those skilled in the art without departing from the technical gist of the present invention.

Hereinafter, the cushion inner tube having a multi-core structure of the present invention and its manufacturing method will be described in detail with reference to the attached FIGS. 1 to 14.

First, the cushion inner tube having a multi-core structure according to the present invention according to one embodiment includes a first inner tube 100 and a second inner tube 200, as shown in FIGS. 1 and 2.

The first inner tube 100 may be made of a material such as cloth, and is shaped like an envelope, forming a first filling space inside which a filling material such as cotton can be filled, and a first inlet through which the filling material can enter and exit. do. This first inner tube 100 may be formed in various shapes, but may be formed in a square shape, such as the most popular pillow or cushion shape, and will be described below based on this premise.

The second inner tube 200, like the first inner tube 100, may be made of a material such as cloth, and is shaped like an envelope to form a second filling space in which a filling material such as cotton can be filled, and the filling material can be entered and left. A second inlet is formed. This second inner tube 200 may be formed in various shapes, but may be formed in the same square shape as the first inner tube 100, and will be described below based on this premise.

And the second inner tube 200 is formed larger than the first inner tube 100 and accommodates the first inner tube 100 therein. At this time, the first inner tube 100 is preferably formed to have a length longer than half the length of the second inner tube 200 and a width longer than half the width of the second inner tube 200.

The first inner tube (100) allows filling material to be introduced from the outside into both the first inner tube (100) accommodated inside the second inner tube (200) and the second inner tube (200) surrounding the first inner tube (100). ) and one edge of the second inner tube (200) come into contact with each other, and the first inlet is formed on one side of the first inner tube (100). At this time, when the first inlet is opened, the first inner tube 100 and the second inner tube 200 have edges on one side facing each other so that the filling material can only enter and exit the first inner tube 100 through the first inlet. 1 It is formed so that only the first entrance can be opened and closed by the zipper 110. And the second inner tube 200 has a second entrance formed on the other side opposite to the first entrance and is provided with a second zipper 210 that opens and closes the second entrance.

Accordingly, the user operates the first zipper 110 to open the first entrance, inserts the filler into the first filling space, and operates the first zipper 110 to close the first entrance to fill the first inner container 100. Filling material can be filled. In addition, the user operates the second zipper 210 to open the second entrance, inserts the filler into the second filling space, and operates the second zipper 210 to close the second entrance to fill the second inner container 200. Filling material can be filled.

The cushion inner tube having a multi-core structure of the present invention according to this embodiment is, when looking at the longitudinal cross-section of the center where the most force is applied when used, the first inner tube (200) by the second inner tube (200) as shown in Figure 2b. It forms a multi-core structure in which 100) is surrounded. The boundary between the first inner tube 100 and the second inner tube 200 is located close to the upper and lower sides, and at least in one direction, centered on the part where the most force is applied, and the first inner tube 100 and the second inner tube 200 The elastic repulsion force between the 200s and the resistance to preserve the filling material are increased, thereby minimizing the slipping and tilting of the filling material filled in the first inner cylinder 100 and the second inner barrel 200. In addition, since the second inner tube 200 supports the first inner tube 100 in all directions, sagging of the filling in the first inner tube 100 is minimized even if the first inner tube 100 is left standing for a long time.

As a modified example of the cushion inner tube having a multi-core structure according to the present invention according to an embodiment, as shown in Figures 3 and 4, the first inner tube 100 is positioned at a predetermined distance from one edge to the other edge. It can be formed to be incised toward, so that the remaining part, excluding one side, is divided into a plurality of parts. At this time, the point spaced a predetermined distance from one edge preferably means a point closer than half the length of the second inner tube 200 from one edge of the second inner tube 200, and more preferably the second inner tube (200). It means a point extending from one edge of the second inner tube 200 to 1/4 the length of the second inner tube 200 or a point closer thereto. As an example, the first inner tube 100 may be formed in a 'ㄷ' shape or an inverted 'ㄷ' shape, and the outer edge of the vertical portion is formed to face one edge of the second inner tube 200.

When looking at the central longitudinal cross section, this cushion inner tube has a multi-core structure in which the first inner tube 100, which is divided into two by the second inner tube 200, is surrounded, as shown in Figure 4b. Therefore, when the user leans his head or back and an external force is applied, the divided portion of the first inner tube 100 has some fluidity within the second inner tube 200, thereby increasing the user's comfort and minimizing the sagging of the filling material. do.

As another modified example of the cushion inner tube having a multi-core structure according to the present invention according to an embodiment, it can be formed as shown in Figure 5, where one side of each of the first inner tube 100 and the second inner tube is in contact with each other. The edge can be positioned at the top. In addition, the present invention may further include a fourth inner barrel 400 that is smaller than the first inner barrel 100 and accommodates a filler therein. The fourth inner tube 400 may be provided with a separate zipper so that the filling material can be inserted or removed therein, and may also be configured so that the edges are sewn with the filling material inserted. This fourth inner cylinder 400 may be provided in the first charging space formed in the first inner cylinder 100, as shown in FIG. 5B.

In particular, as shown in FIG. 5, the first inner tube 100 is formed so that the remaining part except for one side is divided into a plurality, so that the fourth inner tube 400 provided in the first filling space is the upper end of the cushion inner tube of the present invention. It can be located in the fourth inner tube 400, which is located in the part where the user's neck, head, or back leans when leaning against the present invention, so that the firmness of the filler inserted in that part can be maintained for a long period of time. there is.

On the other hand, the cushion inner tube having a multi-core structure of the present invention according to another embodiment includes a first inner tube 100, a second inner tube 200, and a third inner tube 300, as shown in FIGS. 6 and 7. Includes. At this time, the first inner tube 100 and the second inner barrel 200 are as described above, and detailed descriptions will be omitted.

The third inner tube 300 may be made of a material such as cloth, and is shaped like an envelope, forming a third filling space inside where a filling material such as cotton can be filled, and a third entrance through which the filling material can enter and exit. do. This third inner tube 300 may be formed in various shapes, but may be formed in the same square shape as the first inner tube 100 and the second inner tube 200, and will be described below on the premise of this.

Here, the third inner tube 300 is formed larger than the second inner tube 200 and accommodates the second inner tube 200 therein. At this time, the second inner tube 200 is preferably formed to have a length longer than half the length of the third inner tube 300 and a width longer than half the width of the third inner tube 300, and the first inner tube is located inside the second inner tube 200. (100) forms the accepted state.

The second inner tube (200) allows filling material to be introduced in and out of both the second inner tube (200) accommodated inside the third inner tube (300) and the third inner tube (300) surrounding the second inner tube (200). ) and the other edge of the third inner tube (300) come into contact with each other, and the second inlet is formed on the other side of the second inner tube (200). At this time, when the second inlet is opened, the other edge of the second inner tube 200 and the third inner tube 300 is positioned so that the filling material can only enter and exit the second inner tube 200 through the second inlet. 2 The zipper 210 is formed so that only the second entrance can be opened and closed. And the third inner tube 300 has a third entrance formed on one side opposite to the second entrance and is provided with a third zipper 310 that opens and closes the third entrance.

Accordingly, the user operates the third zipper 310 to open the third entrance, operates the first zipper 110 to open the first entrance, then inserts the filling material into the first filling space and uses the first zipper ( 110) can be manipulated to close the first inlet to fill the first inner cylinder 100 with filler. In addition, the user operates the second zipper 210 to open the second entrance, inserts the filler into the second filling space, and operates the second zipper 210 to close the second entrance to fill the second inner container 200. Filling material can be filled. Additionally, the user can fill the third inner container 300 with filler by putting filler into the third filling space and closing the third entrance by manipulating the third zipper 310.

In the cushion inner tube having a multi-core structure according to another embodiment of the present invention, when looking at the central longitudinal cross-section, the second inner tube 200 is surrounded by the third inner tube 300, as shown in Figure 7b, and the second inner tube 200 is surrounded by the third inner tube 300. It forms a multi-core structure in which the first inner tube (100) is surrounded by the second inner tube (200). Centering on the part where the most force is applied, the boundary between the first inner tube 100 and the second inner tube 200 is located close to the upper and lower sides and in both directions, and the first inner tube 100 and the second inner tube (200) 200), the elastic repulsion force and the resistance to preserve the filling material are further increased, thereby minimizing the slipping and leaning of the filling material filled in the first inner tube 100, the second inner tube 200, and the third inner tube 300. In addition, since the second inner tube 200 supports the first inner tube 100 in all directions and the third inner tube 300 supports the second inner tube 200 in all directions, even if it is left standing for a long time, the first inner tube 200 is supported in all directions. Sagging of the filling material in the inner barrel 100 and the second inner barrel 200 is minimized.

As a modified example of the cushion inner tube having a multi-core structure of the present invention according to another embodiment, as shown in Figures 8 and 9, the first inner tube 100 is positioned at a predetermined distance from one edge of the other side. It can be formed to be incised toward, so that the remaining part, excluding one side, is divided into a plurality of parts. This is the same as the modified example of the cushion inner tube having a multi-core structure according to the present invention according to the above-described embodiment, and detailed description will be omitted. Looking at the central longitudinal cross section, this cushion inner barrel has a third inner barrel as shown in Figure 8b. A multi-core structure is formed in which the second inner tube 200 is surrounded by 300 and the first inner tube 100, which is divided into two by the second inner tube 200, is surrounded.

Meanwhile, the method of manufacturing a cushion inner tube having a multi-core structure of the present invention according to the above-described embodiment is as shown in Figures 10 and 11, and as shown in Figure 10, the fabric preparation step (S10), the fabric It includes a fixing step (S20), a first inlet forming step (S30), a first inner barrel completion step (S40), a second inlet forming step (S60), and a second inner barrel completion step (S70).

In the fabric preparation step (S10), as shown in FIG. 11A, two sheets of first fabric 10 and two sheets of second fabric 20 larger than the first fabric 10 are prepared. At this time, the first fabric 10 and the second fabric 20 may be formed in various shapes. For example, they may be formed in the same rectangular shape, and will be described below based on this premise. In addition, the first fabric 10 is preferably formed to have a length longer than half the length of the second fabric 20 and a width longer than half the width of the second fabric 20.

In the fabric fixing step (S20), two sheets of first fabric 10 are inserted between two sheets of second fabric 20, as shown in Figure 11b. At this time, one edge of the first fabric 10 and one edge of the second fabric 20 are brought into contact with each other, and the two corners of one side of the first fabric 10 are respectively connected to the two edges of one side of the second fabric 20. Preferably, they are equally spaced from the corners of the dog.

In the first entrance forming step (S30), the first zipper 110 is sewn to one edge of the first fabric 10 and one edge of the second fabric 20 that are joined as shown in Figure 11b, 1 The zipper 110 forms a first entrance that is opened and closed only between the two sheets of first fabric 10. The first zipper 110 is made of a cloth material and is configured so that teeth made of metal formed on the edges of two zipper bands formed in the shape of a strip are engaged or opened and closed as the slider moves. The second zipper 210 and the third zipper 310, which will be described below, are configured in the same way as the first zipper 110. In addition, the first zipper 110 is preferably formed to have a length somewhat shorter than the width of the first fabric 10.

In the first entrance forming step (S30), one zipper strip constituting the first zipper 110 to form the first entrance is connected to one piece of second fabric 20 and one piece adjacent to the second fabric 20. It is sewn simultaneously with the first fabric 10 of the sheet, and the other zipper strip is sewn simultaneously with another sheet of second fabric 20 and another sheet of first fabric 10 adjacent to the second fabric 20. At this time, in order to prevent the two sheets of first fabric 10 and the second fabric 20 from being sewn at the same time, one zipper band is sewn with one sheet of first fabric 10 and one sheet of second fabric 20 overlapped. , after sewing another zipper band with one piece of first fabric 10 and another piece of second fabric 20 overlapping, one zipper band and another zipper band can be interlocked using a slider.

In the first inner tube completion step (S40), as shown in FIG. 11c, the first zipper 110 is installed on the two sheets of first fabric 10 and the edges excluding the sewn parts are sewn to form the first inner tube 100. ) is formed. At this time, so that the second fabrics 20 are not sewn together, it is preferable to sew the two sheets of second fabric 20 in an unfolded state so that they are located on one adjacent side of the first fabric 10.

In the second entrance forming step (S60), as shown in FIG. 11D, the second zipper 210 is sewn to the other edge of the two sheets of second fabric 20, and the two sheets are connected by the second zipper 210. Forms a second inlet that opens and closes between the two fabrics 20. At this time, the second zipper 210 is preferably formed to have a length slightly shorter than the width of the second fabric 20. In addition, after sewing one zipper band on one piece of second fabric 20 and sewing another zipper band on another piece of second fabric 20, one zipper band and the other zipper band can be interlocked with a slider. You can.

In the second inner tube completion step (S70), as shown in Figure 11e, the first zipper 110 and the second zipper 210 are installed on the two sheets of second fabric 20 and the edges excluding the sewn portion are sewn. Thus, the second inner tube 200 is formed. At this time, the two sheets of second fabric 20 are overlapped and sewing is performed with the first inner tube 100 accommodated therein.

Meanwhile, the method of manufacturing a cushion inner tube having a multi-core structure of the present invention according to another embodiment described above is as shown in Figures 12 to 14, and as shown in Figure 12, the fabric preparation step (S10), the fabric Fixing step (S20), first inlet forming step (S30), first inner barrel completion step (S40), additional fabric fixing step (S50), second inlet forming step (S60), second inner barrel completion step (S70), It includes a third entrance forming step (S80) and a third inner barrel completion step (S90). A detailed description of the same details as the method of manufacturing the cushion inner tube having a multi-core structure of the present invention according to the above-described embodiment will be omitted.

In the fabric preparation step (S10), as shown in Figure 13a, two sheets of first fabric 10, two sheets of second fabric 20 larger in size than the first fabric 10, and the second fabric 20 ) Prepare two pieces of fabric (30) larger in size. At this time, the third fabric may be formed in various shapes. For example, it may be formed in the same square shape as the first fabric 10 and the second fabric 20, and will be described below on this premise. In addition, the second fabric 20 is preferably formed to have a length longer than half the length of the third fabric 30 and a width longer than half the width of the third fabric 30.

After the fabric preparation step (S10), the fabric fixing step (S20), the first entrance forming step (S30), and the first filling completion step (S40) are performed as shown in Figures 13b and 13c, which are as described above. Likewise, detailed explanation is omitted.

In the additional fabric fixing step (S50), as shown in FIG. 13D, two sheets of second fabric 20 with the first inner tube 100 located on the inside are inserted between the two sheets of third fabric 30. At this time, the other edge of the second fabric 20 and the other edge of the third fabric 30 are brought into contact with each other, and the two corners of the other side of the second fabric 20 are respectively connected to the other edge of the third fabric 30. Preferably, they are equally spaced from the corners of the dog.

In the second entrance forming step (S60), the second zipper 210 is sewn to the other edge of the second fabric 20 and the other edge of the third fabric 30 that are joined as shown in Figure 13d, 2 The zipper 210 forms a second entrance that is opened and closed only between the two sheets of second fabric 20.

In the second entrance forming step (S60), one zipper strip constituting the second zipper 210 to form the second entrance is connected to one piece of third fabric 30 and one piece adjacent to the third fabric 30. It is sewn simultaneously with the second fabric 20 of the sheet, and the other zipper strip is sewn simultaneously with another sheet of third fabric 30 and another sheet of second fabric 20 adjacent to the third fabric 30. At this time, in order to prevent the two second fabrics 20 and the third fabric 30 from being sewn at the same time, one zipper band is sewn with one second fabric 20 and one third fabric 30 overlapping. , after sewing the other zipper strip while overlapping another sheet of the second fabric 20 and the other sheet of the third fabric 30, one zipper strip and the other zipper strip can be interlocked using a slider.

In the second inner tube completion step (S70), as shown in FIG. 14e, the first zipper 110 and the second zipper 210 are installed on the two sheets of second fabric 20 and the edges excluding the sewn portion are sewn. Thus, the second inner tube 200 is formed. At this time, so that the third fabric 30 is not sewn together, it is preferable to sew the two sheets of third fabric 30 in an unfolded state so that they are located on the other adjacent side of the second fabric 20.

In the third entrance forming step (S80), as shown in FIG. 14f, a third zipper 310 is sewn on one edge of the two sheets of third fabric 30, and the two sheets of fabric are connected by the third zipper 310. 3 Forms a third inlet that opens and closes between the fabrics 30. At this time, the third zipper 310 is preferably formed to have a length slightly shorter than the width of the third fabric 30. In addition, after sewing one zipper band on one piece of third fabric 30 and sewing another zipper band on another piece of third fabric 30, one zipper band and the other zipper band can be interlocked with a slider. You can.

In the third inner tube completion step (S90), as shown in FIG. 14g, the second zipper 210 and the third zipper 310 are installed on the two sheets of third fabric 30 and the edges excluding the sewn portion are sewn. Thus, the third inner tube 300 is formed. At this time, the two sheets of third fabric 30 are overlapped and sewing is performed with the second inner tube 200 accommodated therein.

On the other hand, in the method of manufacturing a modified example of a cushion inner tube having a multi-core structure according to the present invention according to one embodiment and another embodiment, when preparing the first fabric 10 in the fabric preparation step (S10), a predetermined amount is formed from one edge. By cutting from a point spaced apart from each other toward the other edge, it can be formed so that the remaining part excluding one side is divided into a plurality, and after the first entrance forming step (S30), the first fabric 10 is cut at one side edge. It may be formed by cutting toward the edge of the other side from a point spaced a predetermined distance apart, so that the remaining portion, excluding one side portion, is divided into a plurality of pieces.

As described above, the cushion inner tube having a multi-core structure and the manufacturing method thereof according to the present invention allow fillers to be introduced into inner tubes having different sizes, while allowing the smaller inner tube to be accommodated in the larger inner tube, thereby creating a multi-core structure. This increases the elastic repulsion between each inner tube and the resistance to preserve the filling, so even when used for a long period of time, the filling does not come off or tilt, and the firmness caused by the filling can be continuously maintained.

10: first fabric 20: second fabric
30: Third fabric
100: 1st inner tube 110: 1st zipper
200: 2nd inner tube 210: 2nd zipper
300: 3rd inner tube 310: 3rd zipper
400: 4th pain

Claims (6)

A first inner cylinder 100 having a first charging space formed inside and a first inlet formed on one side;
It includes a second inner barrel (200) that is formed larger than the first inner barrel (100) and has a second charging space therein, and the first inner barrel (100) is accommodated in the second filling space,
The first inner tube 100 is formed to have a length longer than half the length of the second inner tube 200 and a width longer than half the width of the second inner tube 200, and one edge of the second inner tube 200 ) butts against one edge of the
The second inner tube 200 has a second entrance formed on the other side and is provided with a second zipper 210 that opens and closes the second entrance,
The first inner tube 100 and the second inner tube 200 are formed so that only the first entrance can be opened and closed by the first zipper 110 on one side of the butted edge,
When the first inlet is opened, the filling material enters and exits only into the first inner cylinder 100, and when the second inlet is opened, the filling material enters and exits only into the second inner cylinder 200. . According to paragraph 1,
It is formed larger than the second inner barrel 200 and has a third filling space formed therein, and a third inner barrel 300 in which the second inner barrel 200 is accommodated in the third filling space.
The third inner tube 300 has a third entrance formed on one side and a third zipper 310 for opening and closing the third entrance,
The other edge of the second inner tube 200 abuts the other edge of the third inner tube 300,
The second inner tube 200 and the third inner tube 300 are cushions having a multi-core structure, wherein the other edge facing each other is formed so that only the second entrance can be opened and closed by the second zipper 210. Pain in the stomach. According to paragraph 1,
The first inner tube 100 is a cushion inner tube having a multi-core structure, wherein the first inner tube 100 is cut from a point spaced a predetermined distance from one edge toward the other edge, and the remaining part excluding one side is formed to be divided into a plurality of parts. . According to paragraph 1,
It further includes a fourth inner tube (400) that is formed smaller than the first inner tube (100) and accommodates a filler therein,
The fourth inner cylinder 400 is a cushion inner cylinder having a multi-core structure, characterized in that it is provided in the first charging space. Two pieces of first fabric 10 and two pieces of second fabric 20 larger than the first fabric 10 are prepared, and the first fabric 10 is longer than half the length of the second fabric 20. A fabric preparation step (S10) having a length and a width longer than half the width of the second fabric (20);
A fabric fixing step (S20) in which two sheets of first fabric 10 are inserted between two sheets of second fabric 20, and one edge of the first fabric 10 and one edge of the second fabric 20 are abutted. );
A first zipper 110 is sewn on one edge of the butted first fabric 10 and one edge of the second fabric 20, so that only the two sheets of first fabric 10 are separated by the first zipper 110. A first inlet forming step (S30) of forming a first inlet that is opened and closed;
A first inner tube completion step (S40) of installing the first zipper 110 on the two sheets of first fabric 10 and sewing the edges excluding the sewn portion to form the first inner tube 100;
A second inlet is formed by sewing a second zipper 210 on the other edge of the two sheets of second fabric 20 to form a second inlet that is opened and closed between the two sheets of second fabric 20 by the second zipper 210. Formation step (S60);
A second inner tube completion step (S70) in which the first zipper 110 and the second zipper 210 are installed on the two sheets of second fabric 20 and the edges excluding the sewn parts are sewn to form the second inner tube 200. );
A method of manufacturing a cushion inner tube having a multi-core structure, comprising: According to clause 5,
In the fabric preparation step (S10), two more third fabrics (30) larger in size than the second fabric (20) are prepared,
Before the second entrance forming step (S60), insert two sheets of second fabric 20 with the first inner tube 100 located on the inside between the two sheets of third fabric 30, where the second fabric 20 ) and an additional fabric fixing step (S50) to bring the other edge of the third fabric 30 into contact with the other edge,
The second entrance forming step (S60) is performed by sewing the second zipper 210 to the other edge of the second fabric 20 and the other edge of the third fabric 30 that are joined together. While forming a second inlet that is opened and closed only between the two sheets of second fabric 20,
After the second pain completion step (S70),
A third inlet is formed by sewing a third zipper 310 on one edge of the two sheets of third fabric 30 to form a third inlet that opens and closes between the two sheets of third fabric 30 by the third zipper 310. Formation step (S80);
The third inner tube completion step (S90) in which the second zipper 210 and the third zipper 310 are installed on the two third fabrics 30 and the edges excluding the sewn parts are sewn to form the third inner tube 300. );
A method of manufacturing a cushion inner tube having a multi-core structure, further comprising:

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