Bean sofa

Abstract

To provide a bead sofa capable of imparting not only stability and cushioning property but also excellent fitting feeling to a user.SOLUTION: There is provided a bead sofa 100 which is formed by filling a bag-like sofa seat 10 with beads 56. The sofa seat 10 has a seat part 20 having a seating face, and an upper stage part 30 arranged on the upper surface side of the seat part 20 and having an armrest part 32 and a backrest part 34. A partition wall 42 is provided between the seat part 20 and the upper stage part 30, and a bead storage space of the seat part 20 and a bead storage space of the upper stage part 30 are independent respectively.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a bead sofa.

Background Art

[0002] Conventionally, chairs (hereinafter referred to as sofas) having cushioning not only on the seat surface but also on the backrest surface and the like have been widely used. For example, Patent Document 1 discloses a sofa chair in which an internal cushion body formed of a soft urethane foam, a rubber foam, or the like is covered with a bag-shaped cover body.

[0003] In recent years, a bead sofa in which beads are filled inside a bag has been proposed. For example, Patent Document 2 proposes a bead sofa in which an inner bag filled with beads is prepared and housed inside a cover sheet sewn in a sofa shape.

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, conventional sofas and bead sofas each had the following drawbacks. That is, the conventionally used sofas represented by Patent Document 1 use an elastic body such as a soft urethane foam that is shaped in a state where no external force is applied. Therefore, although the sofa can exhibit cushioning while maintaining appropriate stability when a user sits, the fitting feeling in which the seat surface and the backrest surface follow the body shape of the user is not sufficient.

[0006] On the one hand, the bead sofa represented by Patent Document 2 is filled with a large number of small-diameter beads inside. Therefore, it is easy to follow the user's body shape and has an excellent fit. On the other hand, it is significantly deformed when subjected to an external force, and its stability and cushioning are not sufficient.

[0007] The present invention has been made in view of the above problems. That is, an object of the present invention is to provide a bead sofa that can impart not only stability and cushioning but also a good fit to the user.

Means for Solving the Problems

[0008] The bead sofa of the present invention is a bead sofa in which a bag-shaped sofa seat is filled with beads, and the sofa seat has a seat portion having a seating surface and an upper portion disposed on the upper surface side of the seat portion and having an armrest portion and a backrest portion. A partition wall is provided between the seat portion and the upper portion, and the bead accommodation space of the seat portion and the bead accommodation space of the upper portion are independent. and at least on the outer side surface, the boundary portion between the seat portion and the upper step portion is constricted in the inward direction It is characterized by the above.

Effects of the Invention

[0009] According to the present invention having the above configuration, since the accommodation space for accommodating beads is divided, it is possible to provide a bead sofa that exhibits the unique fit of a bead sofa and is also excellent in stability and cushioning.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0011] The bead sofa of the present invention will be described below. For the description, a bead sofa 100 according to an embodiment of the present invention shown in FIGS. 1 to 5 is used. FIG. 1 is a perspective view of a bead sofa 100 according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the bead sofa 100. FIG. 2 shows a state in which the bead sofa 100 is disassembled at a portion having bead accommodation spaces independent of each other. FIG. 3 is a partial cross-sectional view of the sofa shown in FIG. 2, and more specifically, shows a cross-sectional view when the seat portion 20 is cut along the III-III cutting plane. FIG. 4 is a perspective view of the bead sofa 100 in a state where the footrest portion 50 is folded, and FIG. 5 is a perspective view of the bead sofa 100 in a state where the footrest portion 50 and the headrest portion 40 are folded.

[0012] First, the outline of the present invention will be described. The bead sofa 100 of the present embodiment is configured by filling beads 56 in a sofa sheet 10. The sofa sheet 10 has a seat portion 20 having a seat surface 22S, and an upper portion 30 having an armrest portion 32 and a backrest portion 34 disposed on the upper surface side of the seat portion 20. A partition wall 42 is provided between the seat portion 20 and the upper portion 30, and the bead accommodation space of the seat portion 20 and the bead accommodation space of the upper portion 30 are independent.

[0013] Since the bead sofa 100 having the above-described configuration is filled with beads 56 inside, it gives the user an excellent fit. In addition, in the bead sofa 100, the inside of the seat portion 20 and the upper end portion 30 are bead accommodation spaces independent of each other, and even when an external force is applied, the flow of the beads 56 filled inside remains within each bead accommodation space. Since the flow of the beads 56 is restricted in this way, it is possible to prevent the shape of the bead sofa 100 from being deformed too much during use. As a result, in addition to the fit, an appropriate stability and cushioning can be exhibited. Therefore, the bead sofa 100 of the present invention can provide a comfortable sitting feeling with a well-balanced usability that has not been seen in conventional sofas or bead sofas.

[0014] Further, in the upper stage portion 30 of the bead sofa 100, the backrest portion 34 and the armrest portion 32 communicate with each other in a U shape when viewed from above. Therefore, the user can lean the back against the backrest portion 34 while placing the entire arm on the armrest portion 32, and can extend from one arm to the other arm along the U shape when viewed from above. Moreover, since the flow of the beads 56 is allowed between the armrest portion 32 and the backrest portion 34, a natural fit is given to the body along which it is extended without giving a sense of discomfort. Here, the U shape when viewed from above includes similar shapes, for example, a C shape when viewed from above. The present invention will be described in more detail below. In the following description, regarding the vertical direction of the bead sofa 100 and each part constituting the same, the side of the head support portion 40 is referred to as upward and the side of the footrest portion 50 is referred to as downward from an arbitrary position.

[0015] As shown in FIGS. 1 and 2, the bead sofa 100 has a seat portion 20, an upper portion 30, a head support portion 40, and a footrest portion 50. These have bead accommodation spaces independent of each other inside. That is, as can be understood from FIG. 2, the sofa seat 10 of the present embodiment shown in FIG. 1 is composed of a sofa seat 10A constituting the seat portion 20, a sofa seat 10B constituting the upper portion 30, a sofa seat 10C constituting the head support portion 40, and a sofa seat 10D constituting the footrest portion 50. Each sofa seat 10A, 10B, 10C, 10D has an independent bead accommodation space inside. Therefore, the movement of the beads 56 between each sofa seat (that is, between each part) is prevented.

[0016] Each of the sofa seats 10A, 10B, 10C, 10D is provided with a bead filling port 14. The bead filling port 14 is an opening that can be opened and closed and through which the beads 56 can be taken in and out. The bead filling port 14 is configured by appropriately attaching general-purpose means such as a wire fastener (more specifically, a zipper (registered trademark), a chuck (registered trademark), etc.) or a surface fastener (more specifically, a magic tape (registered trademark), etc.). If necessary, by providing a wire fastener or a surface fastener in duplicate, the taking in and out of the beads 56 can be facilitated.

[0017] The beads 56 are composed of small-diameter granular bodies, chips, etc., and the shape is not particularly limited, but may be a spherical body, a columnar body, a cylindrical body, an irregular shape, or a mixture of two or more of these. The dimensions of the beads 56 are not particularly limited, but from the viewpoint of giving an excellent fitting feeling, it is preferably about 1 mm or more and 10 mm or less in diameter. From the viewpoint of giving cushioning properties to the bead sofa 100, the material constituting the beads 56 is preferably a foamed resin, and among them, styrene-based foamed beads, polyethylene-based foamed beads, urethane-based foamed beads, etc. are preferable. Examples of other materials constituting the beads 56 include buckwheat husks.

[0018] In this embodiment, the seat portion 20 has a flat shape, and a part of its upper surface serves as the seat surface 22S. The flat-shaped seat portion 20 can be, for example, a cube as shown in FIG. 2. Although not shown, the seat portion 20 may be, for example, a columnar body with a polygonal cross-section other than a cube, or a cylinder.

[0019] Since the seat surface 22S is the part where the user sits, it can be said that the seat portion 20 is the part where the most load is applied among the independent parts (seat portion 20, upper portion 30, head support portion 40, footrest portion 50) of the bead sofa 100. At least a part of the region other than the seat surface 22S on the upper surface of the seat portion 20 is provided with a partition wall 42 that partitions the upper portion 30 disposed on the upper surface side of the seat portion 20 and the seat portion 20. In this embodiment, the upper surface of the seat portion 20 substantially consists of the seat surface 22S and the partition wall 42. The partition wall 42 may be used as both the upper surface of the seat portion 20 and the lower surface of the upper portion 30, or may be configured by laminating the upper surface of the seat portion 20 and the lower surface of the upper portion 30 different from this.

[0020] In this embodiment, the seat surface 22S is subjected to quilting. In the present invention, quilting refers to a process in which a sheet-like material showing elasticity such as a urethane foam sheet 64 is laminated on the back surface of the side fabric 60 constituting the sofa seat 10, and these are sewn together, as shown in FIG. 3. Although not shown, an arbitrary layer may be further laminated on the surface of the sheet-like material such as the urethane foam sheet 64 opposite to the side fabric 60, and three or more layers may be sewn together. In this embodiment, a plurality of sewing lines (quilt lines 24) formed by sewing the side fabric 60 and the urethane foam sheet 64 together are formed so as to extend in the vertical direction of the bead sofa 100 and be parallel to each other in the width direction of the seat surface 22S.

[0021] By performing quilting on the seating surface 22S where the most load is applied, it is possible to impart appropriate shape retention to the seating surface 22S, preventing the seating surface 22S from sinking too much under the user's weight during use. Therefore, the present embodiment having the seating surface 22S with quilting has very good balance in stability, cushioning, and fit when sitting, and can provide a comfortable feeling as if the part of the user's body in contact with the seating surface 22S is wrapped. In the following, the "comfortable feeling as if wrapped" that the user feels when sitting on the bean sofa 100 may be referred to as a holding feeling.

[0022] The side fabric 60 that constitutes at least the portion of the sofa seat 10 exposed on the outside is not particularly limited and can be appropriately selected from sheets that can form a general sofa seat. For example, as the side fabric 60, woven fabrics, knitted fabrics, or artificial leather made using natural fibers such as cotton, hemp, wool, or chemical fibers such as polyester, acrylic, rayon, nylon, etc. can be mentioned. From the viewpoint of favorably exhibiting appropriate stability and cushioning, it is preferable to use a woven fabric as the side fabric 60. Sheet-like materials such as the urethane foam sheet 64 used for quilting are more elastic than the side fabric 60, and a sheet that can be adjusted to an arbitrary thickness is preferable. For example, the urethane foam sheet 64 is preferably a sheet-like material made of urethane foam with a thickness of 5 mm or more and 15 mm or less.

[0023] In order to provide a better holding feeling, it is desirable to perform quilting not only on the seat surface 22S but also on the surfaces where the user's body abuts and a large load is applied (i.e., the backrest surface 34S, the head support surface 40S, and the footrest surface 50S). That is, it is desirable that all the surfaces supporting the main body of the user's body (from the head to the feet excluding the arms) are quilted. As a result, the user can experience a better holding feeling from the head to the feet. Moreover, a part or all of the surfaces other than the surfaces where the above-mentioned large load is applied are composed only of the side fabric 60 without quilting, so that the fluidity of the beads 56 is sufficiently ensured in each bead accommodation space and a good fitting feeling is maintained.

[0024] In this embodiment, the quilt line 24 in the quilting is a sewing line extending in the vertical direction of the bead sofa 100, and a plurality of quilt lines 24 are provided in the width direction (the direction connecting the two armrests 32). By extending the quilt line 24 in the vertical direction in this way, the quilt line 24 can be made to follow the user's body, so that the above-mentioned holding feeling is increased and it is difficult to give the user a sense of discomfort from the seam, which is preferable. Also, as shown in FIG. 1, when quilting is performed on the surfaces continuous in the vertical direction with respect to the seat surface 22S (the backrest surface 34A, the head support surface 40S, and the footrest surface 50S to be described later), the quilt lines 24 on each surface are provided in the vertical direction and are made continuous in appearance. Thus, although each surface is composed of independent parts, a unified feeling can be given as a whole and excellent design can be imparted. However, the present invention does not exclude aspects other than the aspect in which the quilt line 24 extends in the vertical direction.

[0025] The seat portion 20 and the upper stage portion 30 are connected to each other by a surface at the partition wall 42 on the upper surface of the seat portion 20 and the lower surface of the upper stage portion 30. In this embodiment, the partition wall 42 is also used as a part of the upper surface of the seat portion 20 and the lower surface of the upper stage portion 30, and the seat portion 20 and the upper stage portion 30 are connected via the partition wall 42 by sewing. In this embodiment, the outer edge of the partition wall 42 is formed to be slightly smaller than the outer edge of the cross-section at the vertical middle part of the armrest part 32. Therefore, the vertical middle part of the armrest part 32 bulges slightly outward, and a constriction 25 that constricts inward is formed at the boundary part between the seat part 20 and the upper part 30. In other words, the armrest part 32 has a reduced diameter at the lower end compared to the vertical middle part. By forming the constriction 25 in this way, when an arm is placed on the armrest part 32, the fluidity of the beads 56 filled inside the armrest part 32 is restricted, and it is prevented that the lower end side of the armrest part 32 bulges outward too much. Therefore, the vertical crushing of the armrest part 32 is suppressed, and the stability can support the user's arm downward.

[0026] The partition wall 42 can be made of the same material as the side fabric 60, but in this embodiment, the partition wall 42 is made of a material different from the side fabric 60. More specifically, the fabric constituting the partition wall 42 preferably has higher stretchability than the side fabric 60 and has a smooth and slippery surface. Since the partition wall 42 is a member that is relatively stretchable and has good slipperiness compared to the side fabric 60, when the user sits on the bead sofa 100, leans against the backrest part 34, and places an arm on the armrest part 32, the beads 56 filled in the upper part 30 are easily allowed to flow on the bottom surface (the upper surface of the partition wall 42) of the upper part 30, and it is allowed that the bottom surface expands moderately downward. As a result, it is prevented that the shape of the upper part 30 is deformed too much during use, and better stability, appropriate cushioning property, and fitting feeling are exhibited.

[0027] For example, as a preferable combination of the materials of the side fabric 60 and the partition wall 42, a general woven fabric with a fabric basis weight of about 70 to 300 g / m 2 is selected as the side fabric 60, and a taffeta fabric, a faille fabric, a satin fabric, etc. are selected as the material constituting the partition wall 42. Taffeta fabric is a fabric made by plain weaving using warp threads of a small diameter and weft threads that are relatively thicker than the warp threads. Generally, in taffeta fabric, the number of warp threads is more than that of the weft threads, and in this way, unique ridges are made to protrude on the surface. Faille fabric is a fabric made by plain weaving in the same way as taffeta fabric, and is generally a longitudinally ridged fabric with a greater thickness than taffeta fabric. Satin fabric is a fabric made by twill weaving. Examples of the threads used for taffeta fabric, faille fabric, and satin fabric include natural fibers such as cotton and silk, and rayon, acetate, nylon, polyester, and the like.

[0028] Next, the head support portion 40 and the footrest portion 50 will be described. The bead sofa 100 of the present embodiment is provided with a head support portion 40 having a head support surface 40S and a footrest portion 50 having a footrest surface 50S, in addition to the seat portion 20 and the upper portion 30. The head support portion 40 is disposed above the backrest portion 34 in the upper portion 30, and the footrest portion 50 is disposed continuously further downward from the lower end of the seat surface 22S of the seat portion 20. The head support portion 40 is substantially square, has a head support surface 40S on the upper surface, and has a backrest auxiliary surface 40T that is continuous with the backrest surface 34S. During use, the boundary between the head support surface 40S and the backrest auxiliary surface 40T becomes unclear, and the head may abut against either the head support surface 40S or the backrest auxiliary surface 40T. The footrest portion 50 is substantially square, and the upper surface constitutes the footrest surface 50S, and is continuous with the seat surface 22S at substantially the same height. As described above, according to the bead sofa 100 that also includes the head support portion 40 and the footrest portion 50, the entire body of the user can be supported, and the user can relax sufficiently. In the present embodiment, the head support portion 40 and the footrest portion 50 each have a substantially square shape, but can be changed to other shapes. As described above, each of the head support portion 40 and the footrest portion 50 has a bead accommodation space independent from other bead accommodation spaces. Therefore, the beads 56 filled in the bead sofa 100 are prevented from flowing to other adjacent parts in the seat portion 20, the upper stage portion 30, the head support portion 40, and the footrest portion 50. For this reason, similar to the seat portion 20 and the upper stage portion 30, the head support portion 40 and the footrest portion 50 are also prevented from being overly deformed in shape, and the balance of stability, cushioning property, and fitting feeling in the user's head and feet is very good.

[0029] In the bead sofa 100 having the seat portion 20 and the upper stage portion 30, and appropriately provided with the head support portion 40 and / or the footrest portion 50, the filling rate of the beads 56 filled in each part is not particularly limited. However, from the viewpoint of more sufficiently solving the intended problems of the present invention, it is preferably 8.0 kg / m 3 or more and 13.0 kg / m 3 or less, more preferably 9.0 kg / m 3 or more and 12.5 kg / m 3 or less. Further, in the plurality of bead accommodation spaces in the bead sofa 100, it is preferable that the filling rate of the beads 56 in the bead accommodation space of the seat portion 20 is the highest. In particular, it is more preferable that the filling rate in each part is within the above preferable range, and the filling rate of the beads 56 in the bead accommodation space of the seat portion is the highest. Thereby, the stability when sitting is better, and a bead sofa 100 with a better holding feeling can be provided.

[0030] In the present embodiment, the side fabrics 60 constituting the sofa sheets 10C and 10D in the head support portion 40 and the footrest portion 50 are made of the same material as the sofa sheets 10A and 10B in the seat portion 20 and the upper stage portion 30. However, in the present invention, any one or more of the sofa sheets 10A, 10B, 10C, and 10D can also be constituted by different side fabrics 60.

[0031] In the present embodiment, the head support portion 40 and the backrest portion 34 are connected by a first linear connecting portion 45 that is linearly sewn at the lower end of the head support surface 40S and the upper end of the backrest surface 34S. Therefore, it is possible to rotate the head support portion 40 toward the seat surface 22S with the first linear connecting portion 45 as a rotation axis. Also in the present embodiment, the footrest portion 50 and the seat portion 20 are connected by a second linear connecting portion 55 that is linearly sewn at the upper end of the footrest surface 50S and the lower end of the seat surface 22S. Therefore, it is possible to rotate the footrest portion 50 toward the seat surface 22S with the second linear connecting portion 55 as a rotation axis.

[0032] FIG. 4 shows a state in which the footrest portion 50 is rotated toward the seat surface 22S with the second linear connecting portion 55 as a rotation axis. By such rotation, the footrest portion 50 can be folded toward the seat surface 22S, and the footrest surface 50S and the seat surface 22S can be brought into contact with each other. In the present embodiment, since the height H2 of the footrest portion 50 is substantially the same as or less than the height H3 of the armrest portion 32, and the width W2 of the footrest portion 50 is substantially the same as or less than the width W3 of the seat surface 22S, when the footrest portion 50 is rotated with the second linear connecting portion 55 as a rotation axis, the footrest portion 50 can be accommodated on the seat surface 22S as shown in FIG. 4. Further, as will be described later, when it is planned to rotate the head support portion 40, the vertical length L2 of the footrest portion 50 may be less than the vertical length L3 of the seat surface 22S. For the height, width, and vertical length of each part, reference is appropriately made to FIG. 2. Also in this specification, the expression "substantially the same dimension" in the comparison of dimensions means including a dimensional difference of plus or minus about several centimeters with respect to the same dimension, and about several centimeters means a dimensional difference within plus or minus 5 centimeters, and further within plus or minus 3 centimeters. In the following description, the normal usage mode shown in FIG. 1 is referred to as the first usage mode, the state in which the footrest portion 50 is rotated and folded as shown in FIG. 4 is referred to as the second usage mode, and the state in which the footrest portion 50 and the head support portion 40 are rotated and folded as shown in FIG. 5 to be described later is referred to as the third usage mode.

[0033] The second usage form is a preferable form when it is not used as the first usage form, or when cleaning the room, etc. In the present embodiment, the vertical length L2 of the footrest portion 50 is designed to be less than the vertical length L3 of the seat surface 22S. As shown in FIG. 4, a space 26 is formed between the rotated footrest portion 50 and the backrest portion 34. The user can sit on the bead sofa 100 in a posture different from the first usage form by sinking the waist portion exactly into this space 26 and placing the feet on the back surface of the footrest portion 50, which is the back surface of the footrest portion 50B. In the first usage form, one can sit in a posture close to a posture of lying down with the whole body stretched, while in the second usage form, one can sit in a posture with the upper body raised more than in the first usage form.

[0034] Next, the third usage form will be described. The third usage form is a usage form in which, as shown in FIG. 5, the footrest portion 50 is rotated toward the seat surface 22S side, and the head support portion 40 is rotated toward the seat surface 22S side with the first linear connecting portion 45 as the rotation axis. In the present embodiment, the height H1 of the head support portion 40 is designed to be approximately the same size as or less than the height H3 of the armrest portion 32, and the width W1 of the head support portion 40 is designed to be approximately the same size as or less than the width W3 of the seat surface 22S. Also, the sum of the vertical length L1 of the head support portion 40 and the vertical length L2 of the footrest portion 50 is designed to be equal to or less than the vertical length L3 of the seat surface 22S. According to such a design, as shown in FIG. 5, the head support portion 40 together with the footrest portion 50 can be housed on the seat surface 22S.

[0035] In the third usage form, from the viewpoint that when the head support portion 40 and the footrest portion 50 are housed on the seat surface 22S, the upper surface becomes substantially flat and can be favorably compacted, an aspect in which the sum of the vertical length L1 of the head support portion 40 and the vertical length L2 of the footrest portion 50 is equal to or less than the vertical length L3 of the seat surface 22S is preferable. In such an aspect, it is easy to house the head support portion 40 and the footrest portion 50 on the seat surface 22S, and the bead sofa 100 in the state of the third usage form can also be used as a stool without a backrest and armrests.

[0036] As described above, the bead sofa 100 that is designed to have appropriate dimensions and includes a head support portion 40 and a footrest portion 50 that are rotatable toward the seat surface 22S enables different usage modes in addition to the first usage mode, and is user-friendly as a 3Way sofa.

[0037] Although the present invention has been described above using the bead sofa 100, the above-described embodiments do not limit the present invention in any way. The bead sofa of the present invention includes, for example, embodiments that do not have either one or both of the head support portion and / or the footrest portion.

[0038] The present invention described above includes the following technical ideas. (1) A bead sofa in which a bag-shaped sofa seat is filled with beads, wherein the sofa seat has a seat portion having a seat surface, and an upper portion disposed on the upper surface side of the seat portion and having an armrest portion and a backrest portion, and a partition wall is provided between the seat portion and the upper portion, and the bead accommodation space of the seat portion and the bead accommodation space of the upper portion are independent, characterized bead sofa. (2) The bead sofa according to (1) above, wherein the seat surface is subjected to quilting. (3) The bead sofa according to (1) or (2) above, wherein at least on the outer side surface, the boundary portion between the seat portion and the upper portion is constricted inward. (4) In a plurality of bead accommodation spaces, The bead sofa according to any one of (1) to (3) above, wherein the filling rate of the beads in the bead accommodation space of the seat portion is the highest. (5) A head support portion having a head support surface that continues upward from the backrest surface of the backrest portion, and / or a footrest portion having a footrest surface that continues downward from the seat surface, The head support part and the footrest part of the bean sofa according to any one of (1) to (4) above each have a bean storage space independent from other bean storage spaces. (6) The head support part and the backrest part are connected by a first linear connecting part linearly sewn at the lower end of the head support surface and the upper end of the backrest surface, and the head support part can rotate toward the seat surface side with the first linear connecting part as the rotation axis. The footrest part and the seat part are connected by a second linear connecting part linearly sewn at the upper end of the footrest surface and the lower end of the seat surface, and the footrest part can rotate toward the seat surface side with the second linear connecting part as the rotation axis. The bean sofa according to (5) above. (7) The sum of the vertical length of the head support part and the vertical length of the footrest part is less than or equal to the vertical length of the seat surface, and the height of the head support part and the height of the footrest part are substantially the same as or less than the height of the armrest part. The bean sofa according to (6) above.

Explanation of Signs

[0039] 10, 10A, 10B, 10C, 10D... Sofa seat 12... Bean storage space 14... Bean filling port 20... Seat part 22S... Seat surface 24... Quilted line 25... Constriction 26... Space 30... Upper part 32... Armrest part 32S... Armrest surface 34... Backrest part 34S... Backrest surface 40... Head support part 40S... Head support surface 42... Partition wall 45... First linear connecting part 50... Footrest part 50B... Back surface of the footrest part 50S ··· Footrest surface 55 ··· Second linear connecting part 56 ··· Beads 60 ··· Side fabric 62 ··· Partition fabric 64 ··· Urethane foam sheet 100 ··· Bead sofa H1, H2, H3 ··· Height L1, L2, L3 ··· Length W1, W2, W3 ··· Width

Claims

1. A bead sofa in which a bag-shaped sofa seat is filled with beads, wherein the sofa seat has a seat portion having a seating surface, and an upper portion disposed on the upper surface side of the seat portion and having an armrest portion and a backrest portion, a partition wall is provided between the seat portion and the upper portion, and the bead accommodation space of the seat portion and the bead accommodation space of the upper portion are independent of each other, a bead sofa, characterized in that at least on the outer side surface, the boundary portion between the seat portion and the upper portion is constricted inward.

2. The bead sofa according to claim 1, wherein the seating surface is quilted.

3. In a plurality of bead accommodation spaces, the bead sofa according to any one of claims 1 or 2, wherein the filling rate of the beads in the bead accommodation space of the seat portion is the highest.

Images