JP2014144089A - Sofa - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable simultaneous use of a lower seating surface and a seating surface having a normal height while facilitating taking a stable attitude of sitting on a floor using the lower seating surface, in a sofa capable of being used at a plurality of seating surface heights.SOLUTION: In a sofa 11 provided with a sofa body 10 having a seating part 11 and a seat cushion 20A arranged on the seating part 11, the seat cushion 20A is formed by extending a flexible mat body 22A having a longitudinal width 1.2 times or more that of a cushion body 21 and having a thickness not larger than one-third of the cushion body 21 from a predetermined front position of the cushion body 21 with a predetermined lateral width, the mat body 22A is suspended to a floor surface from the cushion body 21 of the seating part 11 to flatly lay a predetermined range part on the floor surface, whereby the mat body 22A can be used as a mat for floor sitting, and the mat body 22A is raised and wound around the upper surface side of the cushion body 21, whereby the mat body 22A can be used in a state integrated with the cushion body 21.

Description

  The present invention relates to a sofa having a seat cushion disposed in a seating portion, and more particularly to a sofa that can be used at different heights due to a normal seating surface and a low seating surface close to the floor.

  In recent years, an increasing number of households are playing video games and watching programs on large TVs that are placed on a low board and have a low screen position. In order to adjust the line of sight to the TV screen, a seat called a low sofa or floor sofa is used. A low sofa is used. However, when sitting in a low posture for a long time, fatigue tends to accumulate in the lower back, and in multi-generation houses there are also elderly people who do not like a low seating surface, so even in the same home a low sofa and normal In many cases, there is a need for both height sofas.

  However, it is difficult to realize these two needs in one house under the housing situation in Japan. Therefore, for example, as described in Japanese Utility Model Publication No. 7-42352, a plurality of small mats are connected in a foldable manner, and the small mats are stacked to form a high seating surface. Products that can be used with a low seating surface have become commercially available.

  Japanese Patent No. 3658686 also proposes a sofa bed that has a hollow backrest part and can be folded and accommodated in the backrest part. When doing so, the extra small mat can be stored in the backrest part, and it can be used both high and low without taking up extra space.

  However, for example, as a sofa used in a three-generation house where grandchildren, parents, and grandparents live together, the grandparents use a low seating surface where a baby standing on the floor and the parents use a floor-sitting posture Where both normal seating surfaces are assumed, the use is mainly in the same time zone of a family, but even the conventional sofa described above realizes the simultaneous use (coexistence) of both. It is not possible.

  On the other hand, exercises performed on the floor, such as yoga, are also popular in many households. However, such exercises are often floor-sitting, so they tend to be painful and soft on hard flooring. It is characterized by lack of stability of posture on too much.

  In this case, even if a sofa with a low seating surface is used, the cushioning property and the shape of the seating surface that is not flat are lacking in stability of the posture, making it difficult to use. It is common to lay a mat on the floor or tatami mat. However, when using a dedicated mat for exercising in this way, it takes time and labor for its removal and a dedicated space for storing it.

Japanese Utility Model Publication No. 7-42352 Japanese Patent No. 3658686

  The present invention is intended to solve the above-described problems. For a sofa that can be used at a plurality of seating surface heights, a low seating surface can be used while maintaining a stable seating posture at a low seating surface. It is an object to enable simultaneous use of a seat with a normal height.

  Therefore, the present invention provides a sofa comprising a sofa body having a seat portion with a flat upper surface and a seat cushion having a predetermined thickness disposed on the seat portion, and the seat cushion is located from a predetermined position on the front of the cushion body. On the other hand, a flexible mat body having a front and rear width of 1.2 times or more and a thickness of one third or less is extended with a predetermined left and right width, and the mat body is seated. It is possible to use it as a mat for sitting on the floor by hanging it from the cushion body to the floor surface and laying the predetermined range flat on the floor surface, and lifting the mat body and winding it on the cushion body upper surface side It can be used as an integrated device.

  In this way, a seat for floor-sitting that is close to the floor surface by extending a mat body with a longer front-back width and thinner than this from the front part of the seat cushion placed on the seating part of the sofa and hanging down to the floor Because it can be used as a surface, it can be used at the same time in two different heights, a low seat surface that enables stable floor sitting with a thin mat placed on the floor surface and a normal seat surface height with a cushion body. If the mat body is not used for sitting on the floor, the mat body is wrapped around the seat cushion, so that the mat body can be used on a higher seating surface with increased cushioning properties while keeping it difficult to get in the way.

  Further, in this sofa, the seat cushion is a separate body in which the cushion body and the mat body are each covered with a predetermined padding on a bag-like exterior, and the front part that forms the long side of the rectangular cushion body in plan view The mat body turns with respect to the cushion body with the connecting portion as the center, and the exterior ground forming one side of the base end side of the mat body is connected in a hinge shape. It will be easy to do.

  In this case, the filling of the mat body is made of a foamed resin, and at least the upper surface and the bottom surface thereof are not cut surfaces, but are formed by molding the foamed resin into the mold. A film portion having a dense structure toward the surface is formed on both the upper and lower surfaces, so that even a thin mat can exhibit appropriate cushioning and strength.

  Furthermore, in the above-described sofa, if the mat body has a substantially square shape in plan view having the same lateral width as the cushion body, the mat body has the same width as the cushion body. As it is extended to the floor as it is, it becomes easy to use the seat for the floor sitting widely and efficiently.

  Furthermore, a gap can be formed between the rear end surface of the cushion body and the front of the back portion of the sofa body, and the front end side is fitted into the gap and fixed while the mat body is wrapped around the cushion body upper surface side. If it is made possible, the mat body is fixed in a state of being wound around the seat cushion, and the state can be easily maintained stably.

  According to the present invention, a mat body having a longer front and rear width than this and having a thickness of 1/3 or less is extended from the front of the cushion body of the seat cushion, and the mat body can be hung down to the floor and used for floor sitting. In addition to facilitating the stable sitting of the floor on the surface, it is possible to use a low seating surface and a normal seating surface at the same time.

It is a perspective view of the sofa which is embodiment in this invention. It is a perspective view of the seat cushion arrange | positioned in the seating part of the sofa of FIG. It is a side view of the sofa of FIG. It is a side view which shows the state which wound the mat body around the cushion main body from the state of FIG. In the application example of the sofa of FIG. 1, it is a side view which shows the state which pinched | interposed the front-end | tip of the mat body on the cushion body rear end side, and was wound.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows a sofa 1A of the present embodiment. This sofa 1A is for two-seater use, but a cushioning material is stuck at a predetermined position of a frame (not shown) and the surface is covered with an exterior such as cloth. A sofa main body 10 having a seating portion 11 and a backrest portion 12 and a seat cushion 20A, which is a separate body and covered with a bag-like exterior, and is arranged on the upper surface of the seating portion 11.

  The seat cushion 20A includes a cushion body 21 formed by covering a padding made of foamed resin in the form of a rectangular plate in a plan view with an exterior, and a flat-shaped padding made of a foamed resin molded body such as urethane foam having high flexibility. Is formed of a mat body 22A having a rectangular shape in plan view and having the same left-right width, about 1.4 times the front-back width, and about one-fifth the thickness of the cushion body 21.

  In the present embodiment, the seat cushion 20A placed on the upper surface of the seating portion 11 of the sofa body 10 includes the exterior of the portion of the base end side of the mat body 22A that is rectangular in plan view and the length of the cushion body 21. The front exterior ground forming the side is connected in a hinge shape, and the thin mat body 22A extends from a part of the thick cushion body 21 so as to be able to turn around the connecting portion. The feature is that.

  That is, in the sofa 1A having such a seat cushion 20A, the mat body 22A extended from the front portion is placed on the floor surface in a state where the cushion body 21 is disposed on the upper surface of the seat body 11 as shown in the figure. And more than half of it is flatly laid on the floor surface, so that it can be used as a mat for floor sitting with the upper surface of the mat body 22A having a height close to the floor surface as the seat surface 22a. In addition, the upper surface of the cushion main body 21 can be used simultaneously as a seat surface 21a having a normal height on the sofa.

  FIG. 2 shows a state in which the seat cushion 21, which is a separate body from the sofa body 10, is placed on the floor alone. As the size of the mat body 22A, from the viewpoint of securing a wide seating surface for the floor sitting with respect to the cushion main body 21, a front-rear width equivalent to 1.0 to 2.0 times (preferably 1.2). ~ 1.6 times), from the standpoint of balance between posture stability and cushioning, a thickness of 1/2 to 1/7 (at least 1.5 cm or more, preferably around 2.5 cm) is preferable. It is.

  The filling of the mat body 22A is made of a foamed resin molded body such as urethane foam, and at least the upper surface and the bottom surface thereof are not a cut surface but a molded surface obtained by injecting a foamed resin into the mold. It is preferable in that a film portion having a denser structure toward the surface is formed on both the upper and lower surfaces, and a thin mat can exhibit appropriate cushioning and strength.

  As the foamed resin used for this, a so-called “cold foam” in which polyol and MDI are mixed and foamed at room temperature is more preferable in that an excellent feel can be easily obtained. Further, since the seat cushion 20A is separate from the sofa body 10, it can be used alone as a floor-sitting mat or a lying mat as shown in the figure. Further, in the case of lying down, the mat body 21 can be used as a pillow.

  FIG. 3 shows a state in which the mat body 22A of the seat cushion 20A is hung vertically to the floor surface, bent horizontally at the position reaching the floor surface, and about two-thirds of the mat body 22A is arranged flat on the floor surface. Is shown. By arranging the mat body 22A in such a manner, the floor sitting surface 22a having the same area as the seating surface 21a of the cushion main body 21 is formed at a height position close to the floor surface.

  For this reason, for example, in a 3rd generation house, it is convenient for practicing to stand while standing on the cushion body 21 side by the low seat surface 22a where the foot does not sink too much, and even if it falls, the mat body 22A If it is above, there is no worry of injury. The infant's parents can sit on the low seating surface 22a and watch the TV screen while touching the standing child with the front of the cushion body 21 in the back, and at the same time, their grandparents are at a normal height. You can also spend time for family members sitting on the seat 21a.

  Furthermore, the seating surface 22a for sitting on the floor has an appropriate cushioning and strength and a certain size as described above, so it is also suitable for performing exercises such as yoga, It is an optimal exercise mat that makes it easy to ensure the stability of the posture and does not cause pain in the part that hits the floor. The mat body 22A has a moderate cushioning property and excellent tactile sensation, so that a relaxed feeling can be obtained just by lying on the mat body 22A.

  On the other hand, from the state of FIG. 3, the mat body 22 </ b> A is lifted and wound around the upper surface side of the cushion main body 21 as shown in FIG. 4. And the height of the seating surface 22b is higher than that of the normal seating surface 21a. In this way, when the mat body 22A is not used for floor sitting, the mat body 22A can be immediately integrated with the cushion body 21 without requiring a dedicated storage space, so that the mat body 22A can be made difficult to get in the way. When used as an object, it can be immediately placed on the floor.

  In this case, the cushion body 21 and the mat body 22A stacked on the cushion body 21 are combined with layers having different characteristics, for example, by different foamed resin materials and / or foamed states as described above. Thus, a more complex and delicate cushion function can be exhibited, and a luxurious seat cushion that gives satisfaction to the user can be easily realized.

  FIG. 5 shows a sofa 1B as an application example of the sofa 1A. The basic configuration is the same as that of the sofa 1A described above, except that a gap 30 is formed between the rear end surface of the cushion body 23 of the seat cushion 20B and the front surface of the back portion 12 of the sofa body 10, The mat body 22B of the seat cushion 20B is longer than the mat body 22A described above, and is characterized in that the front end side can be fitted and fixed in the gap 30 while being wound around the cushion body upper surface side 23.

  By adopting such a configuration, when the mat body 22B is hung on the floor surface, the seat surface for sitting on the floor is further widened by the front-rear width, and the mat body 22B is wrapped around the cushion body 23. While the seat surface 22c is high, the front end side can be clamped between the rear end surface of the cushion body 23 and the front surface of the backrest portion 12 of the sofa body 10, and the mat body 22B is fixed in an integrated state with the cushion body 23. It becomes stable as it is.

  As described above, with respect to a sofa that can be used at a plurality of seating surface heights, the present invention enables simultaneous use of a low seating surface and a normal height seating surface that can easily take a floor-sitting posture. It became easily feasible.

  1A, 1B Sofa, 10 Sofa body, 11 Seat part, 12 Back part, 20A, 20B Seat cushion, 21, 23 Cushion body, 21a, 22a, 22b, 22c Seat surface, 22A, 22B Mat body, 30 Gap

Claims (5)

  In a sofa provided with a sofa body having a seat portion on a flat upper surface and a seat cushion having a predetermined thickness disposed on the seat portion, the seat cushion is 1 with respect to the cushion body from a predetermined position on the front of the cushion body. A flexible mat body having a front and rear width of 2 times or more and a thickness of 1/3 or less is extended with a predetermined left and right width, and the mat body is used as a cushion for the seating portion. The cushion body can be used by hanging from the main body to the floor surface and laying a predetermined area flat on the floor surface so that it can be used as a mat for floor sitting, and the mat body is lifted and wound around the upper surface of the cushion body. A sofa that can be used as an integrated unit.   The seat cushion is a separate body in which the cushion body and the mat body are each covered with a predetermined padding in a bag-shaped exterior, and a front exterior that forms a long side of the cushion body that is rectangular in plan view 2. The sofa according to claim 1, wherein an exterior ground forming one side of a base end side of the mat body is connected in a hinge shape.   3. The sofa according to claim 2, wherein the filling of the mat body is made of a foamed resin, and at least the upper surface and the bottom surface thereof are not cut surfaces but formed surfaces formed by injecting the foamed resin into the mold.   4. The sofa according to claim 1, wherein the mat body has a substantially rectangular shape in plan view having a lateral width equivalent to that of the cushion main body. A gap can be formed between the rear end surface of the cushion body and the front surface of the back portion of the sofa body, and the front end side is fitted into the gap and fixed while the mat body is wound around the upper surface of the cushion body. A sofa according to claim 1, 2, 3 or 4, characterized in that it is possible.

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