chair

Abstract

We provide chairs with an aesthetically pleasing design where the edges of the upholstery are not easily visible. [Solution] The chair of the present invention includes a body support 1 formed by layering cushioning material (cushion layers 71, 72) on a base material 60 and covering the surface side with upholstery 74, and a frame body 2 that supports the body support 1, wherein the peripheral edge 74a of the upholstery 74 is wrapped around to the back side of the peripheral edge 60a of the base material 60, and the peripheral edge 74b of the upholstery 74 is located between the base material 60 and the frame body 2.

Description

Technical Field

[0001] The present invention relates to a chair.

Background Art

[0002] Conventionally, a chair is known in which a body support constituting a seat plate and a backrest is supported by a frame body such as a leg frame. By stretching upholstery of various materials on the body support of such a chair, the appearance and sitting comfort of the chair can be changed. As a method of stretching upholstery on the body support, for example, there is a method of adhering the peripheral edge of the upholstery with an adhesive or the like (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when the above method is used, there is a concern that the peripheral edge of the upholstery appears on the appearance of the chair, impairing the aesthetic appearance. In addition, when the user's hand comes into contact with the peripheral edge of the upholstery during use of the chair, there is also a problem that the touch is poor and the peripheral edge of the upholstery is easily damaged and peeled off.

[0005] An object of the present invention is to provide a chair that has been improved in consideration of the above circumstances.

Means for Solving the Problems

[0006] The chair of the present invention includes a body support in which a cushion material is stacked on a base material and the front surface side is covered with upholstery, and a frame body that supports the body support, and the peripheral edge portion of the upholstery is wound to the back surface side of the peripheral edge portion of the base material, and the peripheral end of the upholstery is located between the base material and the frame body.

[0007] According to the chair of the present invention, the peripheral edge of the upholstery is hidden by the base material and the frame body, making it difficult to visually recognize, and the appearance of the chair is improved. Further, since the peripheral edge of the upholstery is covered by the frame body, when the chair is in use, the user's hand does not come into contact with the peripheral edge of the upholstery, and the poor touch can be eliminated. Furthermore, damage and peeling of the peripheral edge of the upholstery due to contact can be reduced.

[0008] In the chair of the present invention, the base material may be composed of a synthetic fiber felt, and a part of the back surface side of the base material may appear on the appearance.

[0009] According to such an aspect, it is possible to relieve and absorb the impact when sitting on the chair, and to reduce the weight while maintaining the strength of the entire chair. In addition, in the appearance of the body support, the upholstery appears on the front surface side, and a part of the synthetic fiber felt of the base material appears on a part of the back surface side. Thereby, it is possible to expand the variation as a chair excellent in designability with different materials and textures on the front surface side and the back surface side of the body support.

[0010] Further, the base material and the peripheral edge portion of the upholstery may be fixed by adhesion or tacking or both.

[0011] According to such an aspect, the unevenness of the portion (adhesive portion or tacked portion) where the peripheral edge portion of the upholstery is fixed to the base material is small, and the body support (base material) and the frame body can be arranged close to each other. Thereby, the frame body can stably support the body support, and the stability of the entire chair is improved.

[0012] Further, the cushion material may include a first cushion layer overlapping the base material and a second cushion layer overlapping the first cushion layer, and the first cushion layer may be formed of a material harder than the second cushion layer.

[0013] According to such an aspect, by adopting a two-layer structure composed of cushion materials having different hardnesses, the cushioning property of the chair can be further improved.

[0014] Furthermore, the peripheral edge of the first cushion layer may overlap the surface side of the peripheral edge of the base material, and the side peripheral end surface of the base material and the side peripheral end surface of the first cushion layer may be covered by the second cushion layer.

[0015] In this configuration, by covering each side periphery of the overlapping base material and the first cushion layer with the periphery of the second cushion layer, the feeling of unevenness when the user grasps the periphery of the body support can be reduced. In addition, the periphery of the body support can be rounded to give it a soft appearance.

[0016] The peripheral edge of the body support may be configured as an outwardly protruding flange portion, and the frame may be provided with pipe or rod material arranged along the flange portion.

[0017] In this configuration, the flange portion of the body support hides the frame and the edges of the upholstery, making them less visible and improving the appearance of the chair. [Effects of the Invention]

[0018] In the chair of the present invention, the edges of the upholstery are positioned between the base material constituting the body support and the frame, so that the edges of the upholstery are concealed by the body support and the frame, making them difficult to see, and thus improving the appearance of the chair. [Brief explanation of the drawing]

[0019] [Figure 1] This figure shows one embodiment of a chair, where (A) is a top view and (B) is a front view. [Figure 2] In this embodiment, (A) is a left side view and (B) is a rear view. [Figure 3] In this embodiment, (A) is a bottom view, and (B) is a perspective view taken from the lower left. [Figure 4] This is a perspective view of the same embodiment, taken from the upper left. [Figure 5]It is an exploded perspective view showing an enlarged view of the left rear part of the same embodiment. [Figure 6] It is a longitudinal sectional view taken along the line A-A in FIG. 1 of the same embodiment. [Figure 7] It shows a first modification example of the cushion layer and the ground fabric, and is a longitudinal sectional view taken along the line A-A in FIG. 1. [Figure 8] It shows a second modification example of the cushion layer and the ground fabric, and is a longitudinal sectional view taken along the line A-A in FIG. 1. [Figure 9] It shows a third modification example of the cushion layer and the ground fabric, and is a longitudinal sectional view taken along the line A-A in FIG. 1.

Mode for Carrying Out the Invention

[0020] Next, embodiments of the present invention will be described based on the drawings. In the following description, the terms "front and rear" and "left and right" are used to specify directions, but these terms of front and rear and left and right are based on a seated person. The front view direction is the direction facing the seated person. Therefore, the left and right in the front view are opposite to the left and right seen from the seated person.

[0021] <Schematic Configuration of Chair> As shown in FIGS. 1 to 4, the chair of the embodiment includes a body support (shell) 1 on which the user sits and a frame body 2 that supports the body support 1. The body support 1 and the frame body 2 have a generally left-right symmetric configuration with a left-right center line extending in the front-rear direction in a plan view as the axis of symmetry.

[0022] The body support 1 is integrally formed by a seat plate 11, a back plate 12, and left and right side plates 13. As shown in FIGS. 1 to 5, the body support 1 includes a base material 60 that forms a three-dimensional shape and cushion layers 71 and 72 stacked on the surface side (upper surface) of the base material 60, and the entire upper surface (surface side) of the body support 1 is covered with a ground fabric 74. The peripheral edge portion 74a of the ground fabric 74 is wound around and fixed to the back surface side (lower surface) of the base material 60.

[0023] The body support 1 has flange portions 111, 121, 131, and 141 that protrude outward from the front end of the seat plate 11, the upper end of the back plate 12, and the upper ends of the left and right side plates 13. The flange portions 111, 121, 131, and 141 are connected in an annular shape.

[0024] In the body support 1, the connection points between the rear end of the seat plate 11 and the lower end of the back plate 12, the connection points between the left and right ends of the seat plate 11 and the lower ends of the side plates 13, and the connection points between the left and right ends of the back plate 12 and the rear end of the side plates 13 are rounded. Also, the connection points between the seat plate 11, back plate 12 and side plates 13 and the flange portions 111, 121, 131 and 141 are rounded. Furthermore, the seat flange portion 111 and the front side plate flange portion 131 are curved in a forward-facing convex shape, and the back flange portion 121 and the upper side plate flange portion 141 are curved in an upward-facing convex shape. In this way, the body support 1 has a rounded shape overall, giving it a soft impression.

[0025] The frame body 2 comprises a back and seat frame 21 made of metal pipes provided along flange portions 111, 121, 131, and 141, and a pair of left and right legs 22 and a seat support plate 25 that support the back and seat frame 21.

[0026] The back and seat frame 21 comprises a seat frame portion 211 along the rear surface (back surface) of the seat flange portion 111, a back frame portion 212 along the lower surface (back surface) of the back flange portion 121, a front plate frame portion 213 along the rear surface (back surface) of the front plate flange portion 131, and an upper plate frame portion 214 along the lower surface (back surface) of the upper plate flange portion 141. The frame portions 211, 212, 213, and 214 are connected in an annular shape along the flange portions 111, 121, 131, and 141 of the body support 1. Reinforcing members 215 made of metal pipes extending in the left-right direction are installed inside the seat frame portion 211 and the back frame portion 212.

[0027] In this embodiment, the presence of flange portions 111, 121, 131, and 141 makes the frame portions 211, 212, 213, and 214 less conspicuous when the body support 1 is viewed from the front or above, thereby improving the appearance of the chair.

[0028] Each of the left and right legs 22 is made from a single metal pipe having a roughly W-shape in side view, and includes roughly V-shaped front and rear leg sections 221 and 222, and a leg section 223 that extends in the front-to-back direction below the seat plate 11 and connects one end of the leg sections 221 and 222. The other ends of the leg sections 221 and 222 are connected to the front side plate frame section 213 of the back and seat frame 21. The leg sections 223 of the left and right legs 22 are connected to a front leg connecting frame 23 and a rear leg connecting frame 24, which are made of metal pipes extending in the left-to-right direction.

[0029] The folded-over portions of the roughly V-shaped front leg portion 221 and rear leg portion 222 constitute a ground contact portion 224 that is positioned on the floor surface. In this embodiment, as shown in Figure 3(B), a resin leg pad 226 is screw-fastened to a nut member 225 fixed to the lower surface of the ground contact portion 224.

[0030] The back and seat frame 21 and the legs 22 may be made of metal rods, or they may be made of other materials such as synthetic fiber felt, synthetic resin, or wood. It is preferable that the pipes or rods be made of a material that has sufficient strength to support the body support 1 when the chair is in use.

[0031] The pair of left and right seat support plates 25 are made of roughly rectangular metal plates that are elongated in the front-to-back direction, and are positioned on either side of the left-right center line of the seat plate 11, with a gap between them, so as to follow the lower part of the left and right buttocks and thighs of a person seated on the seat plate 11. Note that the seat support plates 25 are not limited to metal plates, but may be made of other materials such as synthetic fiber felt, synthetic resin, or wood.

[0032] A pair of plate-shaped seat nut members 4 are attached to the lower surface (back surface) of the seat plate 11. As shown in Figure 3, each seat nut member 4 is attached to the back side of the base material 60 that forms the base of the seat plate 11. The seat nut members 4 and the seat support plate 25 are connected by male screws 6.

[0033] Plate-shaped nut members 3 are attached to the back side of the flange portions 111, 121, 131, and 141 of the body support 1. As shown in Figure 5, each nut member 3 is attached to the back side of the peripheral edge 60a of the base material 60 and is covered by the peripheral edge 74a of the upholstery 74. The nut members 3 and the back and seat frame 21 are connected by male screws 5. Note that the locations where the nut members 3 are attached are not limited to the flange portions 121, 131, and 141, but may also be the sides of the back plate 12 or the side plate 13.

[0034] As shown in Figure 5, the male screw 5 is inserted through the screw insertion hole 26 provided in the back and seat frame 21, through the screw insertion hole 27 provided in the peripheral edge 74a of the upholstery 74, and screwed into the female screw hole 32 provided in the nut member 3.

[0035] The screw insertion holes 27 provided in the peripheral edge 74a of the upholstery 74 may be formed before the peripheral edge 74a of the upholstery 74 is bonded to the peripheral edge 60a of the base material 60, or they may be formed after bonding, so as to cover each nut member 3 bonded to the back side of the peripheral edge 60a of the base material 60. The size and shape of the screw insertion holes 27 are not limited to this embodiment and can be changed as appropriate.

[0036] In this embodiment, the chair has a good appearance because the nut member 3 is covered by the peripheral edge 74a of the upholstery 74, so the nut member 3 is not visible on the exterior of the body support 1. In addition, the unevenness caused by the nut member 3 being bonded to the back side of the flange portions 111, 121, 131, 141 (peripheral edge 60a of the base material 60) of the body support 1 can be reduced.

[0037] <Composition of base material, cushioning layer, and upholstery> As shown in Figure 6, the body support 1 has a structure in which two layers of cushioning material and upholstery are laminated on the surface (upper surface) of the base material 60, and from the bottom up it consists of the base material 60, the first cushion layer 71, the second cushion layer 72, and the upholstery 74.

[0038] The base material 60 is the base material for the three-dimensional shape of the body support 1 (seat plate 11, back plate 12, left and right side plates 13, which are constructed as a single unit), and is integrally molded by press molding a plate-shaped synthetic fiber felt while heating it. The base material 60 has flange portions that serve as the base material for the flange portions 111, 121, 131, and 141 of the body support 1. That is, the peripheral edge 60a of the base material 60 forms the base material for the flange portions 111, 121, 131, and 141.

[0039] The synthetic fiber felt that constitutes the base material 60 is, for example, made from polyester fibers recycled from waste plastic beverage containers made of polyethylene terephthalate (PET). However, the synthetic fiber felt used as the material for the base material 60 is not limited to polyester felt; any thermoplastic synthetic fiber that can be molded by hot press molding is acceptable. By constructing the base material 60 from synthetic fiber felt, the overall strength of the chair can be maintained while reducing its weight. Furthermore, the base material 60 may also be made from other materials such as wood or synthetic resin.

[0040] As shown in Figure 6, the first cushion layer 71 is formed from a sheet of chipped urethane (for example, about 20 mm thick) of roughly the same size as the upper surface of the base material 60, and is bonded to the upper surface of the base material 60 with an adhesive. Note that the adhesive is not shown in Figure 6.

[0041] The peripheral edge 71a of the first cushion layer 71 is positioned to overlap the peripheral edge 60a of the base material 60. Furthermore, the side peripheral end surface 71b of the first cushion layer 71 is positioned along the side peripheral end surface 60b of the base material 60.

[0042] The second cushion layer 72 is formed from a sheet-like slice of urethane (for example, about 10 mm thick) that is slightly larger than the upper surface of the first cushion layer 71, and is bonded to the upper surface of the first cushion layer 71 with adhesive. Note that the adhesive is not shown in Figure 6. As shown in Figure 6, the peripheral edge 72a of the second cushion layer 72 is bent toward the back side so as to cover the side peripheral end surface 71b of the first cushion layer 71 and the side peripheral end surface 60b of the base material 60.

[0043] The second cushion layer 72 is made of a cushioning material that is relatively softer than the first cushion layer 71. By creating a two-layer structure with cushioning materials of different hardness, impact can be effectively mitigated and absorbed, improving the comfort of the chair.

[0044] Furthermore, by covering the side periphery end surface 71b of the first cushion layer 71 and the side periphery end surface 60b of the base material 60 with the peripheral edge 72a of the second cushion layer 72, the feeling of unevenness when the user grasps the peripheral edge of the body support 1 can be reduced. In addition, the peripheral edge of the body support 1 can be rounded to give it a soft appearance.

[0045] Since the cushion layers 71 and 72 are formed from, for example, a sheet-like cushioning material (elastic body), a molding process using a mold is unnecessary, and they can be manufactured at low cost. However, the cushion layers 71 and 72 may also be molded. Furthermore, the material and thickness of the cushion layers 71 and 72 are not particularly limited and can be changed as appropriate.

[0046] The upholstery fabric 74 is formed to be slightly larger than the upper surface of the second cushion layer 72, and covers the entire upper surface of the second cushion layer 72. As shown in Figure 6, the peripheral edge 74a of the upholstery fabric 74 is wrapped around the back side (bottom surface) of the peripheral edge 60a of the base material 60 and fixed to the back side of the peripheral edge 60a of the base material 60. The material and thickness of the upholstery fabric 74 are not particularly limited and can be changed as appropriate. For example, the material of the upholstery fabric 74 may be a knitted, woven, or nonwoven fabric using natural fibers (silk, cotton, wool, etc.) or chemical fibers (nylon, polyester, etc.), or it may be synthetic leather or natural leather.

[0047] By covering the entire surface (top) of the body support 1 and the underside of the flange portions 111, 121, 131, and 141 of the body support 1 with upholstery 74, the appearance of the body support 1 will show the upholstery 74 on the surface side and the synthetic fiber felt of the base material 60 on a portion of the underside (excluding the flange portions 111, 121, 131, and 141). This expands the variations of the chair, allowing for a design with different materials and textures on the surface and underside of the body support 1.

[0048] The peripheral edge 74a of the upholstery 74 is fixed to the back side (bottom surface) of the peripheral edge 60a of the base material 60, for example, with adhesive 81 and staples 82. The staples 82 are located near the peripheral edge 74b of the upholstery 74, fixing the peripheral edge 74b of the upholstery 74 to the back surface of the peripheral edge 60a of the base material 60. The peripheral edge 74a of the upholstery 74 may be fixed by either adhesive 81 or staples (staples 82).

[0049] The peripheral edge 74a of the upholstery 74 is fixed to the back surface of the peripheral edge 60a of the base material 60 with adhesive 81 or staples 82. This reduces unevenness in the fixed area, allowing the back surface of the flange portions 111, 121, 131, 141 (peripheral edges 60a of the base material 60) of the body support 1 and the frame portions 211, 212, 213, 214 of the frame body 2 to be placed in close proximity. As a result, the body support 1 can be stably supported by the frame body 2, improving the overall stability of the chair.

[0050] As shown in Figure 6, the peripheral edge 74b of the upholstery 74 and the exposed portion of the staples 82 are located between the back side of the flange portions 111, 121, 131, 141 (peripheral edge 60a of the base material 60) of the body support 1 and the frame portions 211, 212, 213, 214 of the frame body 2.

[0051] The edges 74b of the upholstery 74 and the exposed parts of the staples 82 are covered and hidden by the frame parts 211, 212, 213, and 214 of the frame body 2. This prevents the user's hands from coming into contact with the edges 74b of the upholstery 74 when using the chair, eliminating any unpleasant feel and preventing injury from contact with the exposed parts of the staples 82. It also reduces damage and peeling of the edges 74b of the upholstery 74 caused by contact.

[0052] Thus, in this embodiment, the peripheral edge 74b of the upholstery 74 of the chair is hidden on the back side of the flange portions 111, 121, 131, 141 (peripheral edge 60a of the base material 60) of the body support 1, and is also concealed by the frame portions 211, 212, 213, 214 of the frame body 2. As a result, the peripheral edge 74b of the upholstery 74 is difficult to see when the body support 1 is viewed from the side or below, resulting in a good appearance.

[0053] <Variation> As shown in the first modified example in Figure 7, the side circumferential end surface 71b of the first cushion layer 71 may be arranged along the side circumferential end surface 60b of the base material 60, and the side circumferential end surface 72b of the second cushion layer 72 may be arranged along the side circumferential end surface 71b of the first cushion layer 71.

[0054] As shown in the second modified example in Figure 8 and the third modified example in Figure 9, the upholstery 74 may be upholstery 74 formed by integrally forming a fabric 741 and a cushioning material 742. The material and thickness of the cushioning material 742 are not particularly limited and can be changed as appropriate. Preferably, the cushioning material 742 is a sheet-shaped sliced ​​urethane (for example, about 5 mm thick) and has a thickness and softness that allows the peripheral edge 74a of the upholstery 74 to be wrapped around the back side of the base material 60.

[0055] Although embodiments and modifications have been described above, the configurations, arrangements, numerical values, materials, etc. in the embodiments are merely examples, and the present invention can be embodied in various forms, not limited to the embodiments described above. The configuration of each part is not limited to the illustrated embodiments, and various modifications are possible without departing from the spirit of the present invention. For example, the configurations described in the embodiments and modifications (in the notes, etc.) described above may be combined, and the configurations can be added, omitted, replaced, or otherwise modified.

[0056] For example, the body support 1 may be configured to include only one of either the seat plate 11 or the back plate 12. Furthermore, the configuration of the body support 1, consisting of a base material 60, cushion layers 71, 72, and upholstery 74, can also be applied to the backrest, armrests, headrest, etc., of a chair that receive the pressure of a person's body. [Explanation of Symbols]

[0057] 1 body support 111 Seat flange section 121 Back flange section 131 Front plate flange section 141 Upper plate flange section 2 Frame Body 60 Base material 60a Peripheral area 60b side peripheral end surface 71. First cushion layer 71a Peripheral area 71b Side peripheral end surface 72 Second cushion layer 72a Peripheral area 72b Side peripheral end surface 74 Upholstery 74a Peripheral area 74b Peripheral edge 81 Adhesive 82 staples

Claims

1. A body support made by layering cushioning material on a base material and covering the surface with upholstery, The frame body supporting the body support includes, The peripheral edge of the upholstery is wrapped around to the back side of the peripheral edge of the base material. The peripheral edge of the upholstery is located between the base material and the frame body. chair.

2. The aforementioned substrate is made of synthetic fiber felt. A portion of the back side of the aforementioned substrate is visible to the outside. The chair according to claim 1.

3. The base material and the peripheral edge of the upholstery are fixed together by adhesive, tacking, or both. The chair according to claim 1 or 2.

4. The cushioning material comprises a first cushioning layer that overlaps the base material, The invention includes a second cushion layer that overlaps the first cushion, The first cushion layer is made of a material that is harder than the second cushion layer. The chair according to claim 1 or 2.

5. The peripheral edge of the first cushion layer overlaps the surface side of the peripheral edge of the substrate. The side circumferential end surface of the substrate and the side circumferential end surface of the first cushion layer are covered by the second cushion layer. The chair according to claim 4.

6. The peripheral portion of the body support is configured as an outwardly protruding flange portion. The frame body comprises pipe or rod material arranged along the flange portion. The chair according to claim 1 or 2.

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