Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C7/00—Parts, details, or accessories of chairs or stools
  • A47C7/36—Supports for the head or the back
  • A47C7/40—Supports for the head or the back for the back

Definitions

• the present invention relates to a chair substrate, and more particularly to a chair substrate that is suitable for backrest and is deformed in accordance with the shape of the back of a seated person.
• the backrest board of the chair has a support surface that is curved in an arc shape in plan view in accordance with the back of the seated person.
• a chair backrest board that forms a support surface that is easy to stagnate in an arc shape in plan view in accordance with the back of a seated person (for example, Patent Document 1). , See Patent Document 2).
• Patent Document 1 JP-A-12-270962
• Patent Document 2 JP-A-13-128788
• the present invention was made in order to solve the above-described conventional problems, and when the seated person leans on the backrest portion, the chair substrate is easily squeezed into a preferred shape,
• the purpose of the present invention is to provide a chair substrate that fits the body of the occupant without pressing the back of the occupant and can provide a more comfortable seating feeling.
• a flexible chair substrate used for a backrest of a chair, etc. which is powered by an upper shell, an intermediate shell, and a lower shell, and is substantially equal to the entire surface of the upper shell and the lower shell.
• a plurality of small holes are provided almost uniformly, and the upper shell is formed on the entire surface of the intermediate shell.
• a number of holes that are wider in the lateral direction than the holes in the shell and the lower shell are distributed almost uniformly.
• the holes provided in the upper shell and the lower shell are of a laterally expanded hexagonal shape, and the holes provided in the intermediate shell have the same shape as the hexagonal hole. It shall have a shape in which a plurality of holes are connected so as to be continuous in the lateral direction.
• the board is connected to the connecting portion between the left and right side edges of the intermediate shell and both sides of the back frame formed on the peripheral edge of the board.
• a plurality of thin curved flexible portions having a substantially U-shaped cross section are provided.
• the upper shell, the intermediate shell, and the lower shell are integrally formed of a synthetic resin material.
• the chair shell since the stiffness of the intermediate shell is small, when the seated person falls into the backrest, the chair shell has a lower intermediate shell than the upper shell and the lower shell. It becomes easy to see. Therefore, an intermediate shell force with which the back hits most easily deforms in accordance with the shape of the back of the seated person, so that a comfortable seating feeling without pressing the back of the seated person can be obtained.
• the hole provided in the intermediate shell has a shape in which a plurality of holes in the upper shell and the lower shell are connected in the lateral direction.
• the intermediate shell that hits the back of the seated person more easily becomes itchy.
• the connecting portion between the both side ends of the intermediate shell and the back frame is bent and stretched around the U-shaped curved flexible portion, so that the seating feeling is more comfortable. It becomes.
• FIG. 1 is a rear view of a chair provided with an embodiment of the present invention.
• FIG. 2 A side view of the same chair.
• FIG. 3 is a front view of the same chair substrate.
• FIG. 4 is a vertical side view taken along line IV-IV in FIG.
• FIG. 5 is an enlarged cross-sectional plan view taken along line V—V in FIG.
• FIG. 1 is a rear view of a chair provided with the chair substrate of the present invention
• FIG. 2 is a side view of the same
• FIG. 3 is an enlarged front view of the chair substrate alone
• FIG. It is a side view
• the chair substrate (1) used for the backrest is a metal or synthetic resin shell (deep drawing).
• the inner back contact surface (3) surrounded by the back frame (2) has an upper shell (4) and an intermediate shell (4) bent forward in a concave arc shape in front view. It consists of 5) and a lower shell (6) that protrudes forward near the waist.
• the upper shell (4) and the lower shell (6) have fine punched nets (7) of the same shape, and the intermediate shell (5) has coarse and punched nets (8). Are formed!
• the board for the chair (1) is composed of the left and right side arms (10) (10) (
• the intermediate shell (5) is a portion that mainly supports the central part of the back of the seated person.
• the lower shell (6) is the part that mainly supports the waist of the seated person.
• the surface of the chair substrate (1) is provided on the connecting portion between the vertical middle portion of the left and right ends of the intermediate shell (5) and both sides of the back frame (2).
• the thin curved upper and lower curved flexible parts (13) are formed in a body-like shape, and the U-shaped curved flexible part is formed in a body shape.
• Each hole (14) in each punched mesh (7) of the upper shell (4) and lower shell (6) is a laterally expanded hexagon, as shown in Fig. 3, vertically and horizontally, and on the X-ray. It is formed to line up.
• the upper and lower shells (4) and (6) can be bent flexibly according to the shape of the back.
• the flexibility of each punched mesh (7) can be changed appropriately by adjusting the thickness or selecting the shape.
• the holes (15) in the punched mesh (8) of the intermediate shell (5) are formed in the holes (14) of the punched meshes (7) of the upper shell (4) and lower shell (6) in the lateral direction. 3 are connected to each other, and the shape of the opening in the horizontal direction is wide, with adjacent barrier ribs open, aligned in a straight line in the left-right direction, and shifted in the horizontal direction by a half pitch in the up-down direction. It is formed to be distributed.
• the intermediate shell (5) has smaller stagnation rigidity than the upper and lower shells (4) and (6), and is easier to stagnate.
• the flexibility of the punched mesh (8) can be changed as appropriate by changing the wall thickness, the number of connections of the holes (14) of the punched mesh (7), etc. it can.
• the thickness of the inner part of the chair substrate (1) surrounded by the thin U-shaped line (L), that is, the central upper part where the upper central part of the back above the waist of the seated person mainly hits. Is made thinner than the thickness of the other portions, that is, the left and right side portions of the upper shell (4) and the intermediate shell (5) and the side portions and the lower portion of the lower shell (5) continuous therewith.
• the thickness (tl) of the portion surrounded by the thin line (L) is about 3 mm, and the thickness (t2) of the other portion is about 4 mm.
• the front of the part surrounded by the thin line (L) is recessed backwards.
• the hole (15) of the punching mesh (8) of the intermediate shell (5) is formed by the punching mesh of the upper shell (4) and the lower shell (6) ( Compared to each hole (14) in 7), the punched mesh (8) with a wider opening width in the lateral direction is formed coarser, so the sag rigidity is lower than the upper and lower shells (4) and (6). Sag middle shell (5) is easy to squeeze.
• the intermediate shell (5) since the thickness of the part where the upper center of the back above the waist of the seated person hits is thin, the intermediate shell (5), which mainly hits the center of the back of the seated person, corresponds to the shape of the back.
• the upper shell (4) and lower shell (6) which need to be easily deformed, hit the occupant's shoulders and hips, have a slightly higher rigidity, and require a higher load, are stagnation. As a result, the entire back can be supported in the most favorable state, and a comfortable seating feeling can be obtained.
• the present invention can be applied to a substrate such as a seat or a bed, which is not limited to a backrest substrate.

Landscapes

• Chair Legs, Seat Parts, And Backrests (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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Citations (3)

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• 2005
  • 2005-11-14 JP JP2005328348A patent/JP2007130364A/ja active Pending
• 2006
  • 2006-11-02 EP EP06822863A patent/EP1955611A4/en not_active Withdrawn
  • 2006-11-02 CA CA2629774A patent/CA2629774C/en not_active Expired - Fee Related
  • 2006-11-02 WO PCT/JP2006/321943 patent/WO2007055145A1/ja not_active Ceased
  • 2006-11-02 US US12/093,673 patent/US7878598B2/en not_active Expired - Fee Related

Patent Citations (3)

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