bead cushion sofa

Abstract

To provide a bead cushion sofa capable of stably forming a seat surface part and a backrest part.SOLUTION: A bead cushion sofa includes: an inner bag body 1 which is composed of an elastic material cloth and filled with beads; and an outer bag body which is composed of the cloth 11 of an elastic material and adheres and stores the inner bag body. The inner bag body 1 is rectangular in which a plurality of quilting parts 12 sewing upper and lower cloths 11 in a central area are formed in the vertical direction, and length b1 of a first non-quilting part from one end of the quilting part 12 to one end in the vertical direction of the inner bag body 1 is greater than length b2 of a second non-quilting part from the other end of the quilting part 12 to the other end in the vertical direction of the inner bag body 1.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a bead cushion sofa filled with beads, which are granular foam plastic beads. [Background technology]

[0002] Patent Document 1 discloses a bead cushion sofa that includes a first bag fabric, a second bag fabric, and beads filled inside a sofa bag body obtained by fastening the edges of the first and second bag fabrics together, and that can form a shrinkable elastic bag by encasing the second bag fabric inside the first bag fabric. In the case of this bead cushion sofa, the shrinkable elastic bag made of the second bag fabric elastically deforms in response to changes in the user's body posture, making it easy to obtain a shape that matches the user's body posture. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3100276 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when considering use as a sofa, a bead cushion sofa must have a seat and a backrest. However, with the conventional bead cushion sofas described above, when the user changes their body posture, the shape of the seat and backrest changes significantly, making it difficult to maintain a stable seated position.

[0005] The present invention has been made in view of the above circumstances, and its main object is to provide a bead cushion sofa that allows the user to have a stable sitting posture. [Means for solving the problem]

[0006] In order to solve the above problems, one embodiment of the bead cushion sofa of the present invention comprises an inner bag body made of fabric of an elastic material and filled with beads, and an outer bag body made of fabric of an elastic material that tightly contains the inner bag body, wherein the inner bag body is rectangular and has multiple quilted sections formed vertically in its central region by sewing the upper and lower pieces of fabric together, and the length of a first non-quilted section from one end of the quilted section to one vertical end of the inner bag body is greater than the length of a second non-quilted section from the other end of the quilted section to the other vertical end of the inner bag body.

[0007] In the above aspect, the length of the quilted portion may be greater than the length of the first non-quilted portion.

[0008] In addition, in the above aspect, the outer bag body has an opening for accommodating the inner bag body, and a drawstring for tightening the opening is provided around the opening, and the inner bag body can be tightly accommodated by tightening the opening with the drawstring while the inner bag body is accommodated.

[0009] In addition, in the above aspect, the bag may further include a sheet-like portion that is arranged between the upper surface of the fabric on the lower side of the outer bag body and the lower surface of the fabric on the lower side of the inner bag body and that suppresses the movement of beads filled in the inner bag body.

[0010] In addition, in the above aspect, the outer bag body has an opening for accommodating the inner bag body, and a drawstring is provided around the opening for tightening the opening, and the inner bag body and the sheet-like portion are accommodated inside the outer bag body, and the opening is tightened by the drawstring while the inner bag body and the sheet-like portion are accommodated inside the outer bag body, so that the inner bag body and the sheet-like portion are tightly packed and accommodated. [Effects of the Invention]

[0011] According to the present invention, the seat portion and the backrest portion are stably formed, thereby making it possible to stabilize the seating posture of the user. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view showing the configuration of an inner bag body provided in a bead cushion sofa according to an embodiment. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 6] FIG. 2 is a plan view showing the configuration of an outer bag body provided in the bead cushion sofa of the embodiment. [Figure 7] 1 is a perspective view showing the configuration of a seat-shaped portion provided in a bead cushion sofa according to an embodiment. [Figure 8] FIG. 10 is a right side view showing the configuration in which the inner pouch is placed on the sheet-like portion. [Figure 9] FIG. 2 is a right side view showing the configuration of the bead cushion sofa according to the embodiment. [Figure 10] FIG. 10 is a right side view showing the configuration in which the inner pouch is placed on the sheet-like portion. DETAILED DESCRIPTION OF THE INVENTION

[0013] Preferred embodiments of the present invention will be described below with reference to the drawings. Note that the following embodiments are merely examples of devices and methods for embodying the technical concept of the present invention, and the technical concept of the present invention is not limited to the following. Various modifications can be made to the technical concept of the present invention within the technical scope described in the claims.

[0014] The bead cushion sofa of this embodiment includes an inner pouch filled with beads, an outer pouch that houses the inner pouch, and a sheet-like portion provided below the inner pouch. The following describes the configurations of the inner pouch, outer pouch, and sheet-like portion.

[0015] (Structure of inner bag) Fig. 1 is a perspective view showing the configuration of the inner pouch provided in the bead cushion sofa of this embodiment. In Fig. 1, each direction is indicated by an arrow. The direction toward the head of the user of the bead cushion sofa is referred to as "forward," the direction toward the legs is referred to as "rear," the direction toward the right hand side is referred to as "leftward," and the direction toward the left hand side is referred to as "rightward." Figs. 2 to 4 are a plan view, a right side view, and a front view, respectively, showing the configuration of the inner pouch, and Fig. 5 is a cross-sectional view taken along line AA shown in Fig. 2.

[0016] The inner bag body 1 has a generally vertically long rectangle in plan view, and is formed by sewing together the peripheries of two upper and lower pieces of fabric 11. The fabric 11 is made of a stretchable material containing, for example, polyurethane elastic fiber.

[0017] As shown in Fig. 5, the interior of the inner pouch 1 is filled with a large number of beads 13. The beads 13 are spherical granular objects with a diameter of, for example, about 1 mm to 0.1 mm, and are made of foamed plastic such as polyethylene or polystyrene. The beads 13 are filled to the extent that tension is generated in the fabric 11 and the inner pouch 1 can be deformed.

[0018] As shown in Fig. 2, the central region of the inner pouch 1 in a plan view is provided with two quilted sections 12, 12 formed by sewing together upper and lower fabrics 11. The quilted sections 12, 12 extend linearly in the front-to-back direction (vertical direction) and face each other in the left-to-right direction (horizontal direction). The vertical length a of each quilted section 12 is the same. However, these lengths a may be slightly different.

[0019] A first non-quilted section is formed in which the upper and lower fabrics 11 are not sewn together from one end of the front side of each quilted section 12 to one end of the front side of the inner pouch 1. A second non-quilted section is formed in which the upper and lower fabrics 11 are not sewn together from one end of the rear side of each quilted section 12 to one end of the rear side of the inner pouch 1.

[0020] The length b1 of the first non-quilted portion is greater than the length b2 of the second non-quilted portion. In this embodiment, the length b1 is approximately twice the length b2. The length a of the quilted portion 12 is greater than the length b1 of the first non-quilted portion. In this embodiment, the length a is approximately twice the length b1. Note that the "approximately twice" here is an example, and the length may be greater or smaller.

[0021] As described above, each of the quilted portions 12 extends in the vertical direction. Therefore, the quilted portions 12 inhibit the lateral movement of the beads 13 in the central region of the inner pouch 1 while encouraging their vertical movement. When a user presses this central region with their hand, the beads 13 in the central region are encouraged to move vertically by the quilted portions 12, and reach the front and rear ends of the inner pouch 1 where the first non-quilted portion and the second non-quilted portion are formed, respectively.

[0022] Because no quilting is provided at the front and rear ends of the inner pouch 1, the beads 13 can easily move both horizontally and vertically. On the other hand, movement of the beads 13 in the vertical direction from the front and rear ends of the inner pouch 1 to the central region is hindered by the quilting 12, 12 formed in the central region. Therefore, once the beads 13 move from the central region of the inner pouch 1 to the front and rear ends, they do not easily return to the central region and remain within the front and rear ends.

[0023] As described above, the length b1 of the first non-quilted portion is greater than the length b2 of the second non-quilted portion, so the volume of the front end of the inner pouch 1 is greater than the volume of the rear end. Therefore, more beads 13 move and remain at the front end than at the rear end. This results in a greater thickness (height) of the front end of the inner pouch 1 than at the rear end. Therefore, as shown in FIG. 4, the front end is higher than the rear end on the top surface of the inner pouch 1. This front end functions as a backrest, including the back support portion of the bead cushion sofa. Depending on the vertical length of the front end and the user's build, the front end may also function as a headrest.

[0024] As shown in FIG. 5, in the central region of the inner pouch 1, the region surrounded by the quilted portions 12, 12 has a smaller volume than the adjacent regions on the left and right. Therefore, the thickness of the region surrounded by the quilted portions 12, 12 is smaller than the thickness of the adjacent regions. Furthermore, if the beads 13 in the region surrounded by the quilted portions 12, 12 in the central region of the inner pouch 1 are moved to the front and rear ends of the inner pouch 1, the thickness of the region becomes smaller than the thickness of the adjacent regions on the front and rear, i.e., the front and rear ends of the inner pouch 1. Therefore, the central region of the inner pouch 1 is recessed in both the horizontal and vertical directions. The user's waist and buttocks are accommodated in this recessed region.

[0025] As described above, the rear end portion of the inner pouch 1 is thicker than the central region (the recessed region) of the inner pouch 1. Therefore, when the user's lower back and buttocks fit into the central region, the rear end portion functions as a seat portion including the seat surface of the bead cushion sofa.

[0026] As described above, the quilted portions 12, 12 act to form areas in the inner pouch 1 that function as the backrest and seat of the bead cushion sofa. As described above, once the beads 13 move from the central region of the inner pouch 1 to the front and rear ends, they do not easily return to the central region but remain within the front and rear ends, so that the areas that function as the backrest and seat are kept stable. In the case of this embodiment, the outer pouch and sheet-like portion described below further stably maintain these areas.

[0027] Furthermore, as described above, the length a of the quilted portion 12 is greater than the length b1 of the first non-quilted portion and the length b2 of the second non-quilted portion, so the recessed area is sufficiently secured and stably formed. In this case, the difference between the recessed area and the front end (backrest) and rear end (seat) is stably maintained, which results in the backrest and seat being stably formed.

[0028] (Outer bag configuration) Next, we will explain the structure of the outer pouch. This outer pouch functions as a sofa cover for the bead cushion sofa, and not only protects the inner pouch 1 from damage and soiling, but also changes the overall shape of the bead cushion sofa as will be described later.

[0029] 6 is a plan view of the configuration of the outer pouch provided in the bead cushion sofa. The outer pouch 2 is a generally vertically elongated rectangle in plan view, and its outer shape is substantially the same as that of the inner pouch 1 in plan view. The outer pouch 2 is formed by sewing together the rear, left, and right edges of two upper and lower pieces of fabric 21. The front edges are not sewn together, so an opening 22 is formed at the front end of the outer pouch 2. As will be described later, the inner pouch 1 is accommodated in the outer pouch 2 through this opening 22. The fabric 21, like the fabric 11 of the inner pouch 1, is made of a stretchable material containing polyurethane elastic fiber.

[0030] The outer pouch 2 is provided with a tightening mechanism for tightening the periphery of the opening 22. This tightening mechanism has a string-passing portion 23 provided on the front edge of the outer pouch 2, a tightening string 24 that is inserted into the string-passing portion 23, a communication hole 25 that connects the string-passing portion 23 with the outside, and a stopper 26 that engages the tightening string 24 midway.

[0031] The string-threading portion 23 is provided around the entire periphery of the front edge of the outer pouch 2, i.e., the opening edge of the opening 22, and is formed in a cylindrical shape. The drawstring 24 is inserted into the cylindrical interior and is used to tighten the opening 22. The length of the drawstring 24 is greater than the length of the string-threading portion 23, and a portion of it extends outward through the communication hole 25. A stopper 26 is engaged with the portion of the drawstring 24 that extends outward from the string-threading portion 23 (hereinafter referred to as the "extending portion").

[0032] The stopper 26 engages with the drawstring 24 so as to be slidable in the direction in which the drawstring 24 extends, and is configured to be able to lock at any position on the drawstring 24. The stopper 26 has an outer shape larger than the communication hole 25, and prevents the extended portion of the drawstring 24 from entering the string-threading portion 23 through the communication hole 25. Therefore, the length of the extended portion of the drawstring 24 can be adjusted using the stopper 26, and accordingly the length of the portion of the drawstring 24 that is inserted into the string-threading portion 23 (hereinafter referred to as the "insertion portion") can be adjusted. As a result, the opening 22 can be narrowed by the drawstring 24. By narrowing the opening 22 in this manner, the outer pouch 2 tightly houses the inner pouch 1 and a sheet-like portion, which will be described later.

[0033] (Configuration of sheet-shaped part) Next, the configuration of the sheet-shaped portion will be described. This sheet-shaped portion functions as a restricting portion that restricts the movement of the beads filled in the inner pouch 1, and also functions as a member that maintains the shape of the inner pouch 1.

[0034] 7 is a plan view showing the configuration of the seat-like portion of the bead cushion sofa. The seat-like portion 3 is a generally vertically long rectangle in plan view, and its outer shape is substantially the same as that of the inner pouch body 1 in plan view.

[0035] The sheet-like portion 3 is made of a deformable material such as low-resilience urethane foam, and has a thickness of about 1 to 10 cm. The sheet-like portion 3 is provided in close contact with the lower surface (bottom surface) of the inner pouch 1, thereby restricting the movement of the beads 13 near the bottom surface of the inner pouch 1 and reducing the feeling that the bead cushion sofa is touching the bottom. Although the sheet-like portion 3 can deform, it does so less easily than the inner pouch 1, and therefore contributes to maintaining the shape of the inner pouch 1.

[0036] (How to use the bead cushion sofa) Hereinafter, a method of using the bead cushion sofa having the inner pouch 1, outer pouch 2, and sheet-like portion 3 described above will be described with reference to FIGS. A user of the bead cushion sofa first adjusts the shape of the inner pouch 1 by, for example, pressing specific areas of the inner pouch 1 with their hands to move the beads. At this time, the beads in the central region of the inner pouch 1 are particularly moved to the front and rear ends. As a result, as described above, the thickness of the front end of the inner pouch 1 is made greater than that of the central and rear ends to form a backrest, and the thickness of the rear end is made greater than that of the central region to form a seat.

[0037] Next, the user places the adjusted inner pouch 1 on the sheet-like portion 3. At this time, the inner pouch 1 is placed on the sheet-like portion 3 so that the outer shapes of the sheet-like portion 3 and the inner pouch 1 match in a plan view. Figure 8 is a right side view showing the configuration of the inner pouch 1 placed on the sheet-like portion 3 in this manner.

[0038] Next, the user operates the stopper 26 of the outer pouch 2 to shorten the extending portion of the drawstring 24 and fully open the opening 22, and then places the sheet-like portion 3 and the inner pouch 1 placed thereon into the outer pouch 2 through the opening 22. After that, the user releases the engagement between the drawstring 24 and the stopper 26, and pulls the drawstring 24 to reduce the length of the inserted portion of the drawstring 24 while tightening the opening 22, and then engages the stopper 26 with the extending portion of the drawstring 24. As a result, the sheet-like portion 3 and the inner pouch 1 are placed in close contact with the outer pouch 2.

[0039] Fig. 9 is a right side view showing the configuration of the bead cushion sofa 100 obtained by squeezing the opening 22 of the outer pouch 2 as described above. Fig. 10 is a right side view showing the configuration of the sheet-like portion 3 and inner pouch 1 when they are housed in the outer pouch 2 of the bead cushion sofa 100. When the opening 22 of the outer pouch 2 is squeezed, as shown in Fig. 10, the sheet-like portion 3 and inner pouch 1 are pressed inward by the fabric 21 of the outer pouch 2 and compressed. This causes the overall shape of the bead cushion sofa 100 to deform.

[0040] When the drawstring 24 is pulled until the inserted portion of the drawstring 24 is at its minimum length, the opening 22 is sufficiently drawn closed. At this time, the sheet-like portion 3 and the inner pouch 1 are most strongly pressed by the fabric 21 of the outer pouch 2, resulting in a compressed state. As a result, the overall shape of the bead cushion sofa 100 is more inwardly curled. On the other hand, when the drawing of the drawstring 24 is stopped when the inserted portion of the drawstring 24 is still longer, the sheet-like portion 3 and the inner pouch 1 are more gently compressed. In this case, the overall shape of the bead cushion sofa 100 is closer to its pre-compression state. In this way, the overall shape of the bead cushion sofa 100 can be changed by adjusting the degree of drawing of the opening 22. In this way, this embodiment allows the overall shape of the bead cushion sofa 100 to be adjusted to suit the user's preferences. The adjusted shape is stably maintained by engaging the stopper 26 of the outer pouch 2 with the drawstring 24.

[0041] In this embodiment, the seat and backrest portions are stably formed by the inner pouch 1. This allows the user to easily maintain a stable seated position. In addition, by adjusting the degree of narrowing of the opening 22 of the outer pouch 2, the overall shape of the bead cushion sofa 100 can be adjusted, allowing for a shape that suits the user's preferences.

[0042] The bead cushion sofa 100 formed as described above may be turned over and the bottom side (the side where the sheet-like portion 3 is located) may be used as the upper surface. In this case, when a user sits in the central region of the bead cushion sofa 100, the central region is recessed to form a seat portion, and the front end portion is raised to form a backrest portion. This allows the user to maintain a stable seated position. By turning the bead cushion sofa 100 over as needed in this way, the user can achieve the desired feel when using it.

[0043] (Other embodiments) In the above embodiment, the inner pouch 1 is provided with two quilted sections 12, but the number is not limited to this. However, if only one quilted section 12 is provided, it may not be possible to sufficiently encourage the vertical movement of the beads 13 from the central region to the front and rear ends, and it may not be possible to sufficiently restrict the vertical movement of the beads 13 from the front and rear ends to the central region. Therefore, it is preferable that the inner pouch 1 be provided with two or more quilted sections.

[0044] Furthermore, in the above embodiment, the quilted portion 12 extends linearly in the vertical direction, but this is not limited to this as long as it extends vertically, and it may also have a shape that has curved portions, for example.

[0045] Furthermore, in the above embodiment, the sheet-like portion 3 is provided, but it may not be provided and only the inner pouch 1 may be housed in the outer pouch 2. However, in order to reduce the feeling of hitting the bottom and to further stabilize the shape of the inner pouch 1, it is preferable to provide the sheet-like portion 3.

[0046] In the above embodiment, the inner pouch 1 is filled with nothing other than the beads 13, but this is not limiting. Other materials may be filled to the extent that they do not significantly impede the movement of the beads 13. [Explanation of symbols]

[0047] 1 Inner bag 11 Fabric 12 Quilting section 13 beads 2 outer bag 21 Fabric 22 Opening 23 String hole 24 Drawstring 25 Communication hole 26 Stopper 3 Sheet-like part 100 beanbag sofa

Claims

1. The inner bag is made of stretchy fabric and filled with beads. an outer pouch body made of a stretchable fabric that closely fits and accommodates the inner pouch body; Equipped with The inner pouch is rectangular, and has a plurality of quilted sections formed in the vertical direction in a central region thereof by sewing together upper and lower fabrics, and the length of a first non-quilted section from one end of the quilted section to one end of the inner pouch in the vertical direction is longer than the length of a second non-quilted section from the other end of the quilted section to the other end of the inner pouch in the vertical direction. Bead cushion sofa.

2. The length of the quilted portion is greater than the length of the first non-quilted portion. The bead cushion sofa according to claim 1.

3. The outer pouch has an opening for accommodating the inner pouch, and a drawstring is provided around the opening for tightening the opening, and the inner pouch is tightly accommodated by tightening the opening with the drawstring while the inner pouch is accommodated.

3. The bead cushion sofa according to claim 1 or 2.

4. a sheet-like portion that is disposed between the upper surface of the fabric below the outer bag body and the lower surface of the fabric below the inner bag body and that suppresses movement of beads filled in the inner bag body; Further provided with 3. The bead cushion sofa according to claim 1 or 2.

5. The outer pouch has an opening for accommodating the inner pouch, and a drawstring is provided around the opening for tightening the opening, and the inner pouch and the sheet-like portion are tightly packed together by tightening the opening with the drawstring while the inner pouch and the sheet-like portion are accommodated. The bead cushion sofa according to claim 4.

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