JP2014213145A - Knitted product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a boundary part of a seating face and hanging parts from sinking, stably support the human body and goods and improve the appearance of a knitted product.SOLUTION: In a knitted product, the circumference of a knitting fabric 4 is fixed to a frame 2 and the knitting fabric 4 has a flat surface and a hanging part suspending from the flat surface. The frame 2 fixes the side of the knitting fabric 4 and the bottom of the hanging part, and a part which blocks or restrains the tensile force added to the knitting fabric 4 from the frame 2 at the center of the bottom of the hanging part is formed in the knitting fabric 4.

Description

  The present invention relates to a knitted product such as a chair or a base in which a knitted fabric is fixed by a frame.

  A chair as shown in FIG. 9 is known as a chair for fixing a knitted fabric with a frame. Reference numeral 60 is a chair, and 2 is a pipe-like frame made of metal or plastic, for example, and passes through the cylinder 10 provided on the knitted fabric 62 to fix the knitted fabric 62. Reference numeral 64 denotes a seating surface on which a person sits down. Further, notches 14 are provided at four corners of the knitted fabric 62 so that the frame 2 can be easily inserted into the cylinder 10.

  The left and right sides of the seating surface 64 are fixed by the frame 2, but there is no frame 2 in the front and rear. In order to give tension to the knitted fabric 62, the knitted fabric 62 is drawn downward at the lower ends of the hanging portions 66 and 67 as indicated by white arrows in the figure. For this reason, the knitted fabric 62 sinks at the boundary between the seating surface 64 and the hanging portions 66 and 67, and the sinking portions 68 and 69 are generated. FIG. 10 shows the chair 60 as viewed from the side. Because of the subducted portions 68 and 69, the front and rear central portions of the seat surface 64 are not suitable for supporting a human thigh or the like.

  In relation to this problem, Patent Document 1 (JP2004-33542) discloses a chair in which a knitted fabric is fixed by a frame of four rounds of a seating surface. In this chair, there is no drooping part, and the knitted fabric is difficult to deform at the front part of the seat surface. In this chair, the thigh is easy to hit because there is a frame at the front end of the seating surface. Therefore, when the front end frame is lowered, the support of the thighs and the like becomes unstable.

  Patent Document 2 (JP2012-132123) proposes a three-dimensional fabric having a fabric and a frame. FIG. 11 shows this knitted fabric 70, and there are notches 72, 74, 74 at three locations, and a cylinder 10 for housing the frame is provided on the four circumferences of the knitted fabric 70. A frame 78 is inserted into the knitted fabric 70 to form a three-dimensional fabric 76 having a shape close to half of a cylinder, (a) is a front view, (b) is a plan view, and (c) is a side view. Shown visually. Since the knitted fabric 70 is pulled through the frame 78 through the ridges of the notches 72, 74, 74, a strong force is locally applied to the knitted fabric 70. For example, since the knitted fabric 70 is pulled strongly between the notches 74 and 74, as shown in FIGS. On the other hand, in the vicinity of the notch 72, the knitted fabric 70 is strongly pulled toward the frame 78, so that a flat portion 80 is generated.

JP2004-33542 JP2012-132123

  As described above, there is no known technique for preventing the front portion of the seat surface from sinking in a chair having a seat surface and a hanging portion. This problem is not limited to a chair, but also applies to a table or table on which luggage is placed.

  An object of the present invention is to sink at the boundary between a seat surface and a hanging portion for a knitted product in which the periphery of the knitted fabric is fixed by a frame and the knitted fabric has a seat surface and a hanging portion whose direction changes from the bearing surface. It is to suppress. When the sinking is suppressed, the seat surface is flattened to the vicinity of the boundary with the hanging part, the seating comfort is improved in the case of a chair, the article can be stably supported in the case of a table, and the appearance of the knitted product Will improve.

  In the present invention, the knitted fabric is fixed to a frame, and the knitted fabric has a flat surface and a hanging portion depending from the flat surface. The frame fixes the side of the knitted fabric and the bottom of the hanging portion. And a portion of the frame at the bottom base of the hanging portion that blocks or restricts the tension applied to the knitted fabric is provided on the knitted fabric, and the frame fixes the bottom of the hanging portion on both sides of the portion. To do.

  In the present invention, the tension applied to the knitted fabric is cut off or limited from the frame at the center of the bottom of the drooping portion. For this reason, it is possible to prevent or suppress the sinking of the boundary between the flat surface and the hanging part. When the subsidence is reduced, the area on which the flat surface can support the human body and the article increases, the sitting comfort is improved, and the placed article Is stable. The flat surface becomes flatter and the appearance of the knitted product is improved. The tension applied from the frame to the knitted fabric becomes a problem when the heat treatment is performed on the knitted fabric using the heat-welding fiber, and the tension applied from the frame during use becomes a problem when the heat treatment is not performed. . Furthermore, the side part of the knitted fabric means both side parts of the flat part and both side parts of the hanging part. The hanging portion may be provided on both the front and rear sides of the flat surface, or may be provided only on one side such as the front side.

  Preferably, the said part is a notch provided in the center of the base of the hanging part. Preferably, the portion is a hole provided in an upper portion of the center of the bottom of the hanging portion. If a notch is provided in the center of the bottom of the hanging part, or a hole is provided in the upper part of the center of the bottom, the frame at the center of the base can block the tension pulling the knitted fabric. For this reason, the boundary between the flat surface and the hanging portion can further reduce the sinking. The hole is preferably circular or elliptical, and may be square or the like. The upper part at the center of the base is a range that does not reach the flat surface from the upper part at the center of the base to the upper half of the hanging part.

  The knitted product is, for example, a chair or a table. In the case of a chair, the flat surface is a seating surface on which a person sits down, and the seating surface does not sink at the boundary with the hanging part, so that the person's thigh can be supported stably. Also in the case of a chair, the area for stably supporting the article increases.

  If the frame is provided at the boundary between the flat surface and the hanging part, for example, in the case of a chair, the thigh is compressed. Therefore, the frame is not provided at the boundary between the flat surface and the hanging part, or even if it is provided, only a part of the boundary is provided. It is preferable.

  Further, according to the present invention, the tension applied to the knitted fabric from the frame to the center of the bottom of the hanging portion in the knitted fabric composed of the flat surface and the hanging portion hanging from the flat surface by fixing the periphery to the frame. A portion for blocking or limiting is provided, and both sides of the portion are fixed by a frame. Being configured to be fixed by the frame means that a cylinder or the like for inserting the frame is provided on the knitted fabric, or an appropriate part for fixing to the frame is provided. When this knitted fabric is used for a chair, a table, or the like, a knitted product in which the boundary between the flat surface and the hanging portion does not sink or the sinking is small.

Perspective view of chair frame Top view of knitted fabric on a chair Perspective view of chair Iv-iv direction vertical sectional view of Fig. 3 Perspective view of a chair with a backrest Plan view of the knitted fabric in a modified example in which holes are provided instead of notches A perspective view of a chair in a variation using a stretchable knitted fabric instead of a notch Plan view of the knitted fabric in a modified example in which the knitted fabric is lengthened instead of the notch Perspective view of a conventional chair Side view of the chair of FIG. Plan view of knitted fabric of Patent Document 2 It is a figure which shows the chair of patent document 2, (a) is a front view, (b) is a top view, (c) is a side view.

  In the following, an optimum embodiment for carrying out the invention will be shown.

  1 to 8 show an embodiment and its modification by taking a chair as an example, but the same applies to a table, a table, and the like. 1 to 4 show a first embodiment and FIG. 1 shows a chair frame 2. The frame 2 is made of metal, plastic or the like, can be assembled by a seam (not shown), and is inserted into a cylinder 10 provided on the four circumferences of the knitted fabric 4. The frame 2 may be solid or may have a plate shape or the like. FIG. 2 shows a knitted fabric 4 that is inserted into the frame 2 and becomes a chair. Reference numeral 6 denotes a seat surface, 8 denotes a front hanging portion, 9 denotes a rear hanging portion, and the frame 2 is not disposed at the boundary between the seat surface 6 and the hanging portions 8 and 9. The knitted fabric 4 has cutouts 14 at four corners, and for example, semicircular cutouts 12 and 12 in the center of the lower ends of the hanging portions 8 and 9. Then, the frame 2 is inserted from the notch 14 to obtain a chair 20 shown in FIG. There are many methods for inserting the frame 2, and the frame 2 may be inserted from another position without providing the notch 14. The cutouts 12 and 12 may have any shape such as a semicircular shape, a semi-elliptical shape, and a polygonal shape.

  The knitted fabric 4 is knitted by, for example, arranging heat-fusible elastic yarns and ordinary synthetic resin fibers, and the type of the knitted fabric itself is arbitrary. The knitted fabric 4 may be knitted only with heat-bondable elastic yarns, or may be knitted only with ordinary synthetic resin fibers. The knitted fabric with the frame 2 inserted is heated in a hot air furnace or the like to melt the heat-fusible elastic yarn. As a result, the yarns constituting the knitted fabric 4 are coupled to each other, and the shape of the knitted fabric 4 is fixed, so that it is difficult to deform even when a load such as weight is applied. In the case where the knitted fabric 4 is knitted only with ordinary synthetic resin fibers, heat treatment is not necessary. The heat-fusible elastic yarn is made of, for example, a high-melting polyether-based polyester fiber as a core material, and the periphery is covered with a sheath of a low-melting thermoplastic resin fiber.

  Since the notches 12 and 12 are in the center of the lower ends of the hanging portions 8 and 9, the frame 13 in the notch 12 does not pull the knitted fabric downward. For this reason, the tension from the frame 2 to the hanging parts 8 and 9 is applied as indicated by the white arrows in FIG. 3, and the force for pulling the upper parts of the notches 12 and 12 downward is weakened. Therefore, as shown in FIG. 4, the sinking of the boundary portions 15 and 16 between the hanging portions 8 and 9 and the seating surface 6 does not occur. Preferably, the boundary portions 15 and 16 have a knitted fabric structure that is difficult to stretch. For example, when the other part of the knitted fabric 4 has a rib structure that is easy to stretch, the boundary portions 15 and 16 are made to have a tense structure that is difficult to stretch. Further, even if the boundary portions 15 and 16 are knitted with a smooth knitting and a smooth knitting with a smaller number of stitches than others, or the yarn length per stitch at the boundary portions 15 and 16 is made shorter than others, the knitting is difficult to stretch. Become the ground. When the notches 12 and 12 are not provided, the center of the hanging portion is pulled downward by the tension from the frame 13 and sinking occurs at the boundary portion with the seat surface 6.

  The front, rear, left and right in this specification are defined as shown in the lower part of FIG. Since the left and right sides of the seating surface 6 are pulled by the frames 17 and 18 of this portion, the seating surface 6 is planar. Although the knitted fabric 4 is softened when heated, since there are notches 12 and 12, a downward pulling force is not applied from the frame 13, and the boundary portions 15 and 16 between the hanging portions 8 and 9 and the seat surface 6 do not sink. . Further, during heating, the seat surface 4 is pulled by the frames 17 and 18 to keep a flat shape. Gravity is applied to the seating surface 4 from the waist, thighs, luggage, etc. during use, but the seating surface 4 is hard and difficult to deform due to heat welding.

  If the boundary portions 15 and 16 between the hanging portions 8 and 9 and the seat surface 6 are not depressed, the appearance of the chair 20 is improved. When a person sits down, the seat surface 6 is flat up to the boundary portions 15 and 16 with the hanging portions 8 and 9, so that the area capable of supporting the human body is increased and the sitting comfort is improved. When the chair 20 is used as a table, the placed luggage is stabilized. When only sitting comfort is a problem, the notch 12 does not need to be provided in the rear hanging portion 9. Further, depending on the shape of the chair, the rear hanging portion 9 may not be provided.

  FIG. 5 shows a chair 30 with a backrest 22, 21 is a frame, and 31 is a knitted fabric. Reference numeral 24 denotes a rearward inclined portion that extends rearward substantially horizontally. Reference numeral 26 denotes a reinforcing surface between the backrest 22 and the seat surface 6, which is formed of a knitted fabric that is difficult to extend. For example, the reinforcing surface 26 uses a knitted fabric that is difficult to stretch by shortening the yarn length per stitch, or that is difficult to stretch, such as smooth knitting. The other points are the same as those of the embodiment of FIGS. Note that the notch 12 on the rear inclined portion 24 side may not be provided.

  In the chair 30 of FIG. 5, because of the notches 12, 12, the seat surface 6 is flat up to the vicinity of the boundary with the hanging portion 8, and the backrest 22 is flat up to the vicinity of the upper end. For this reason, it is possible to stably support the thigh, the waist, the back and the neck. Because of the reinforcing surface 26, the central part of the boundary between the seat surface 6 and the backrest 22 does not rise, and the seating comfort is good. Since the knitted fabric 31 is less depressed and raised, the chair 30 has a good appearance.

  FIG. 6 shows a knitted fabric 34 provided with holes 36, 36 instead of the notches 12, 12, and the other points are the same as the knitted fabric 4 of FIG. 2. When the holes 36 and 36 are provided, when the frame 2 is inserted, it becomes difficult for tension to be applied from the frames 13 and 13 in the center of the bottom of the hanging parts 8 and 9, and the seat is similar to the embodiment of FIGS. Subsidence before and after the surface 6 can be prevented.

  FIG. 7 shows a chair 40 provided with stretchable portions 44, 44 that are easy to extend instead of the notches 12, 12, and 42 is the knitted fabric. For example, the stretchable portion 44 can be easily stretched by changing the material of the yarn from others, or by increasing the yarn length per stitch at the stretchable portion 44. Further, when the longitudinal direction of the knitted fabric 42 is the wale direction, if the stretchable portion 44 is knitted with a garter structure, the stretchable portion 44 can be easily stretched. When this direction is the course direction, the stretchable portion 44 can be easily stretched by knitting the stretchable portion 44 with a rib structure. For this reason, the tension applied from the frame at the bottom center of the hanging parts 8 and 9 can be relaxed, and the sinking at the boundary parts 15 and 16 between the seating surface 6 and the hanging parts 8 and 9 can be reduced. However, since the expansion / contraction part 44 restricts the tension from the frame 2 but does not block it, the sinking at the boundary parts 15 and 16 between the seating surface 6 and the hanging parts 8 and 9 is reduced, but in FIGS. Not as small as each example. In other respects, the embodiment is the same as the embodiment shown in FIGS.

  FIG. 8 shows a knitted fabric 50 provided with protruding portions 52, 52 instead of the notches 12, 12. Protruding portions 52 and 52 are provided by extending the knitted fabric in the vertical direction in FIG. 8 at a portion corresponding to the center of the bottom side of the hanging portions 8 and 9 by molding knitting such as turn knitting. Thereby, the tension applied from the frame at the center of the bottom of the hanging parts 8 and 9 is relaxed, and the sinking at the boundary parts 15 and 16 between the seating surface 6 and the hanging parts 8 and 9 is reduced. However, the sinking cannot be made as small as in the examples of FIGS. In other respects, it is the same as the embodiment of FIGS.

In the embodiment and the modification, the following effects can be obtained.
1) Prevent or suppress the sinking of the boundary portions 15 and 16 between the seat surface 6 and the hanging portions 8 and 9.
2) If the boundary portions 15 and 16 between the seat surface 6 and the hanging portions 8 and 9 are not submerged, the seat surface 6 increases the area that can support the human body and articles, improves the sitting comfort, and stabilizes the placed articles. To do.
3) Since the seat surface 6 is flat, the appearance of the chair 20 and the like is improved.

  In the embodiment, the pair of front and rear hanging parts 8 and 9 are provided, but only the front hanging part 8 may be provided. In this case, the frame 2 may or may not be disposed on the rear end side of the seat surface 6. In the embodiment, the chair and the base of the knitted product have been described. However, a desk, a cabinet, furniture, a table, a bed, and the like may be configured by the knitted product of the embodiment. Chairs also include vehicle seats and sofas, office chairs, and the like.

2 Frame 4 Knitted fabric 6 Seat surface 8, 9 Hanging portion 10 Tube 12 Notch 14 Notch 15, 16 Boundary portion 20 Chair 21 Frame 22 Backrest 24 Back inclined portion 26 Reinforcing surface 30 Chair 31 Knitted fabric 34 Knitted fabric 36 Hole 40 Chair 42 Knitted fabric 44 Stretched portion 50 Knitted fabric 52 Protruding portion 60 Chair 62 Knitted fabric 64 Seat surface 66, 67 Suspended portion 68, 69 Subducted portion 70 Knitted fabric 72, 74 Notch 76 Three-dimensional fabric 78 Frame 79 Subducted portion 80 Flat part

Claims (5)

The knitted fabric has a flat surface and a hanging part that hangs down from the flat surface.
The frame fixes the side of the knitted fabric and the bottom of the hanging part,
From the frame at the center of the bottom of the hanging part, a part for blocking or limiting the tension applied to the knitted fabric is provided on the knitted fabric,
The knitted product is characterized in that the frame fixes the bottom of the hanging part on both sides of the part.   The knitted product according to claim 1, wherein the portion is a notch provided in the center of the bottom of the hanging portion.   The knitted product according to claim 1, wherein the portion is a hole provided in an upper portion of the center of the bottom of the hanging portion.   The knitted product according to any one of claims 1 to 3, wherein the knitted product is a chair or a table. By fixing the periphery to the frame, in the knitted fabric consisting of a flat surface and a hanging part depending from the flat surface,
In the area of the knitted fabric that is the center of the bottom of the hanging part, a part that blocks or restricts the tension applied to the knitted fabric from the frame is provided,
The knitted fabric is configured so that both sides of the portion are fixed by a frame.

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