JP5593523B2 - Chair - Google Patents

Description

  The present invention relates to a chair suitably used for school or office use.

  Conventionally, since this type of chair is often seated for a relatively long time, the seating comfort has been emphasized and various improvements have been made. Recently, as a chair that is very comfortable to sit, a mesh-type chair has been developed in which a load of a seated person is elastically received by a mesh stretched on a frame member (see, for example, Patent Document 1). .

  However, in such a mesh-type chair, it is necessary to stretch the mesh on the frame member with an appropriate tension, the support structure is complicated, and a high technical force is required for the stretching operation.

JP 2007-202591 A

  The present invention has been made paying attention to the above-described circumstances, and an object thereof is to provide a comfortable chair without requiring high technical skill and labor for manufacturing.

The present invention employs the following configuration in order to solve the above-described problems. That is, the chair according to the present invention is a chair in which a seat body and a back plate are supported on a chair body, and at least one of the seat plate and the back plate includes a plurality of belt-like members that can bend in the thickness direction. It is provided with a plate material which is arranged adjacent to each other and has a structure in which adjacent belt-like members are connected to each other so as to be elastically deformable with a longer path than connecting straight lines with connecting pieces narrower than the belt-like members. The plate member has a peripheral part supported by the chair body and an intermediate part located inside the peripheral part, and the strip members are arranged so as to connect the two opposing peripheral parts. It has a shape that can be connected to be elastically deformable with a longer path than connecting two places of the peripheral edge with a straight line, and the respective strip-like members are different from each other in the surplus length with respect to the straight line. With And wherein the Rukoto.

  If this is the case, the load of the seated person is elastically received by the plate material, so it requires higher technical skills and labor than the conventional frame material with a mesh stretched. Instead, it becomes a comfortable chair. That is, each of the band-shaped members mainly receives the load of the seated person while being bent in the thickness direction, and each connection piece narrower than each of the band-shaped members is deformed along with the relative displacement of the band-shaped members, and each of the band-shaped members To make the movements appropriate. Therefore, the plate material is bent and deformed according to the load of the seated person, and the seating comfort is improved.

  As a preferable aspect in the case where the plate member has a peripheral portion supported by the chair body and an intermediate portion located inside the peripheral portion and is integrally formed with resin, the intermediate portion is In which the specific portion is structured to include the belt-like member and the connecting piece.

Each said strip | belt-shaped member is arrange | positioned so that two places of the said peripheral part which opposes may be connected . Moreover, the shape which can connect elastically deformably with a long path | route rather than connecting two places of the said peripheral part with a straight line is comprised.

Each of the belt-like members has a different surplus length with respect to a straight line. Specifically, the surplus length of each band-shaped member is set to gradually change, or the surplus length of a specific band-shaped member is set to be different from the surplus length of other band-shaped members. It is possible that

  It is preferable that the strip-shaped member and the connection piece are arranged in substantially the same plane, and at least one of the strip-shaped member and the connection piece has a wave shape. Here, the “same surface” includes a plane and a curved surface.

  Since the present invention is configured as described above, it is possible to provide a comfortable chair without requiring high technical skill and labor for manufacturing.

1 is an overall perspective view showing a first embodiment of the present invention. The whole perspective view which shows the back side of the embodiment. The top view which shows the seat plate of the embodiment. The perspective view which shows the seat plate of the embodiment. The whole perspective view showing a 2nd embodiment of the present invention. The whole perspective view which shows the back side of the embodiment. The sectional side view of the embodiment. The disassembled perspective view which shows the principal part of 3rd Embodiment of this invention. The side view which shows the chair of the embodiment typically. The whole perspective view showing a 4th embodiment of the present invention. The side view which shows the usage condition of the chair of the embodiment typically. The side view which shows the usage condition of the chair of the embodiment typically. The top view of the board | plate material which shows a reference example . Explanatory drawing which shows the modification of the attachment body of this invention typically.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, the present invention is applied to a chair A1 that can be stacked in the vertical direction. This chair A1 is formed by supporting a seat plate A3 and a back plate A4 on a chair body A2.

  As shown in FIGS. 1 and 2, the chair main body A2 includes left and right bases A21 placed on the floor via the grounding body A211, and left and right front legs A22 extending upward from the front ends of the bases A21. The left and right rear legs A23 extending upward from the rear end of each base A21, the rear frame A24 installed between the upper ends of the rear legs A23, the vicinity of both ends of the rear frame A24, and the front legs A22 The left and right side frames A25 connecting the upper ends, the front frame A26 installed between the front end vicinity portions of these side frames A25, and the left and right back frames A27 extending upward from the upper ends of the rear legs A23. Become. The base A21, the front leg A22, the rear leg A23, the side frame A25, and the back frame A27 are integrally formed by bending a common metal wire, and act on the seat plate A3 and the back plate A4. It is strong enough to receive a load. The seat plate A3 is supported by the left and right side frames A25. Further, in the present embodiment, with the seat plate A3 attached to the chair body A2, a gap that allows the seat plate A3 to bend downward between the front frame A26 and the seat plate A3. Is set to be formed.

  As shown in FIGS. 1 to 4, the seat plate A3 includes a plate material A31 and a mounting body A32 protruding from the lower surface of the plate material A31. In this embodiment, the seat plate A3 is integrally formed with resin. ing.

  As shown in FIGS. 1 to 4, the plate material A31 has a peripheral portion A5 supported by the left and right side frames A25 of the chair main body A2, and an intermediate portion A6 located inside the peripheral portion A5. The intermediate portion A6 is specifically molded, and the specific portion of the intermediate portion A6, in this embodiment, the entire region of the intermediate portion A6 has a structure including the belt-like member A61 and the connecting piece A62.

  As shown in FIGS. 1 to 4, the peripheral edge A5 includes a side edge portion A51 located on both the left and right sides of the intermediate portion A6, a rear edge portion A52 located on the rear side of the intermediate portion A6, and an intermediate portion A6. And a front edge portion A53 located on the front side. The side edge portion A51 is curved downward so as to wrap around the side frame A25. The rear edge portion A52 is curved toward the rear upper side. The front edge portion A53 is curved toward the front lower side.

  As shown in FIGS. 1 to 4, the intermediate portion A6 is provided with a plurality of strip-shaped members A61 that can be bent in the thickness direction adjacent to each other, and the adjacent strip-shaped members A61 are wider than the strip-shaped members A61. The narrow connecting piece A62 is connected to each other so as to be elastically deformable with a longer path than connecting with a straight line.

  As shown in FIGS. 1 to 4, each of the belt-like members A61 is arranged so as to connect two locations of the opposing peripheral edge portion A5, and connects the two peripheral edge portions A5 with a straight line. Further, it has a shape that can be connected to be elastically deformable with a long path. In this embodiment, each belt-like member A61 connects the left and right side edge portions A51 of the peripheral edge portion A5 at the same front-rear direction position. Each of the belt-like members A61 is different from each other in the surplus length with respect to the straight line, and the surplus length of the specific belt-like member A61 is set to be different from the surplus lengths of the other belt-like members A61. More specifically, the surplus length of the belt-like member A61 near the center of the intermediate portion A6 is made longer than the surplus lengths of the front and rear belt-like members A61 of the intermediate portion A6. In other words, the surplus length of the band-shaped member A61 of the part that receives the buttocks of the seated person is set to be the longest, and gradually band-shaped from the band-shaped member A61 toward the front edge part A53 and the rear edge part A52 of the peripheral edge part A5. The surplus length of the member A61 is set to be short.

  As shown in FIGS. 1 to 4, each connecting piece A62 is arranged so as to connect two places of the adjacent belt-like member A61, and rather than connecting the two places of the belt-like member A61 with a straight line. It has a shape that can be connected to be elastically deformable with a long path. In this embodiment, each connection piece A62 has the same left-right position between the front edge of one belt-like member A61 and the rear edge of another belt-like member A61 disposed adjacent to the front of the one belt-like member A61. Connected with. Each of the connection pieces A62 has a different surplus length with respect to the straight line, and the surplus length of the specific connection piece A62 is set to be different from the surplus lengths of the other connection pieces A62. More specifically, the surplus length of the connection piece A62 near the center of the intermediate portion A6 is made longer than the surplus length of the connection pieces A62 on the left and right sides of the intermediate portion A6. In other words, the surplus length of the connecting piece A62 of the portion that receives the buttocks of the seated person is set to be the longest, and the band-shaped member A61 gradually moves from the connecting piece A62 toward the left and right side edge portions A51 of the peripheral edge A5. The excess length is set to be short. And these strip | belt-shaped member A61 and the connection piece A62 are arrange | positioned in the substantially same plane, and each strip | belt-shaped member A61 and each connection piece A62 have each wavy.

  As shown in FIGS. 1 and 2, the attachment body A32 is integrally provided on the lower surface of the side edge portion A51. The attachment body A32 has a groove A321 having a C-shaped cross section, and the seat plate A3 is attached to the chair body A2 by engaging the groove A321 with the side frame A25.

  As shown in FIGS. 1 and 2, the back plate A4 is provided with mounting holes A41 that open downward on both side edges. By fitting the mounting holes A41 into the back frame A27, the back plate A4 is provided. Is supported by the chair body A2.

  As described above, the chair A1 according to the first embodiment is the chair A1 in which the chair body A2 supports the seat plate A3 and the back plate A4, and the seat plate A3 can be bent in the thickness direction. A plurality of strip-shaped members A61 are arranged adjacent to each other, and the adjacent strip-shaped members A61 are connected to each other so as to be elastically deformable along a longer path than connecting the strip-shaped members A61 with a connecting piece A62 having a narrower width than the strip-shaped member A61. A plate material A31 having the above-described structure is provided. Therefore, all or the main part of the seat plate A3 can be manufactured by integral molding with a resin, and high technical force and labor as in the case where a mesh is stretched on the frame material are not required. In addition, since the connection piece A62 is connected to be elastically deformable through a longer path than the straight line connection, the connection piece A62 forms a deformed portion in addition to the expansion and contraction of the material of the connection piece A62 itself. Since the belt-like member A61 to which the connecting piece A62 is connected is easily deformed and the load of the seated person can be elastically received by the plate material A31, the chair A1 is comfortable. In particular, as in the embodiment, if the surplus lengths of the belt-like member A61 and the connecting piece A62 are set according to the load distribution, the portion that directly receives the load can be easily bent while maintaining the strength of the entire seat plate. it can.

  That is, each of the belt-like members A61 mainly receives the load of the seated person while bending in the thickness direction, and each connection piece A62 narrower than each of the belt-like members A61 assists the load of the seated person while bending in the thickness direction. Since the movement of each band-shaped member A61 is controlled while receiving, the number of the band-shaped members A61 and the surplus length, or the location where the connecting piece A62 is formed and the surplus length are appropriately set. It is possible to make a comfortable seat plate having characteristics. Therefore, it is possible to easily design the seat plate A3 having appropriate elasticity according to the load.

  In particular, in the above embodiment, the plate material A31 having the peripheral edge portion A5 and the intermediate portion A6 and the mounting body A32 are integrally formed of resin, so that the number of parts can be reduced, and the frame material can be used. Compared with the case where the mesh is stretched, the number of steps required for assembly can be greatly reduced. Further, since the plate material A31 is integrally formed of resin, the strength is higher than that of the mesh type, and there is little risk of tearing, cutting, or sliding. That is, since the mesh type is knitted or woven with a thin thread, there is a possibility that the whole may fray, but the plate material A31 of this embodiment is partially damaged as described above. However, it is possible to prevent the damage from spreading to the whole as in the mesh type.

  Since the specific portion of the intermediate portion A6, in this embodiment, the portion that receives the buttocks and thighs of the seated person has a structure including the belt-like member A61 and the connecting piece A62, the peripheral region of the seat plate A3 is Although firmly supported by the frame, the inner region can provide a soft sitting comfort.

  Moreover, since the said intermediate part A6 is equipped with the strip | belt-shaped member A61 and the connection piece A62 which make a wave shape, these bend in the thickness direction and it is comfortable to sit. Further, since the band-shaped member A61 and the connecting piece A62 are arranged in substantially the same plane, the intermediate portion A6 does not have an extreme protrusion in the thickness direction, and a flat sitting comfort is obtained.

  Furthermore, each belt-like member A61 is arranged so as to connect the two peripheral edge portions A5, in other words, the left and right side edge portions A51, and connects the two peripheral edge portions A5 with a straight line. Since it has a shape that can be connected to be elastically deformable with a longer path, not only the expansion and contraction of the material of the band-shaped member A61 but also the surplus length of the path becomes a bending allowance, so that the band-shaped member A61 is bent. The allowable range of deformation in the direction is increased, and the seat plate A3 is rich in flexibility. In particular, the longer the surplus length between the left and right side edge portions A51 is, the easier it is to bend, and in this embodiment, the rear side is the most likely to bend slightly than the middle part in the front-rear direction, which is longer than the other portions. Yes. And since each said strip | belt-shaped member A61 has connected right and left side edge part A51, it can receive a load firmly by each strip | belt-shaped member A61. In addition, since the connecting strip A62 connects the adjacent strip-shaped members A61 with an appropriate surplus length, when a load is intensively applied to a certain strip-shaped member A61, or when the seating posture changes, etc. Even when a longitudinal and lateral force is applied to the belt-like member A61, the force is distributed to the adjacent belt-like member A61 without impairing the flexure characteristics of each belt-like member A61, thereby obtaining an appropriate deflection as the entire seat plate A3. Can do.

  Since each strip member A61 and each connection piece A62 have different surplus lengths with respect to the straight line, the flexibility of the seat plate A3 can be appropriately varied in each part. Specifically, since the part that receives the buttocks of the seated person is set longer than the surplus length of the other band-shaped member A61 and the connecting piece A62, the part that receives the buttocks of the seated person is larger than the other parts. Can be bent. Therefore, the amount of deformation can be varied depending on the part, and a comfortable sitting comfort can be provided.

  Further, since the peripheral edge portion A5 is curved as described above, the peripheral edge portion A5 has high rigidity necessary for the seat plate A3.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, the present invention is applied to a chair B1 that can be nested in the front-rear direction. This chair B1 is formed by supporting a seat plate B3 and a back plate B4 on a chair body B2.

  As shown in FIGS. 5 to 7, the chair body B2 includes left and right front legs B21 having casters B211 at the lower ends, left and right rear legs B22 having casters B221 at the lower ends, the upper ends of the rear legs B22, The left and right side frames B24 that connect the upper ends of the front legs B21, the front frame B25 that is laid between the vicinity of the front ends of these side frames B24, and the rear frame B23 that is laid between the vicinity of the rear ends of these side frames B24 And left and right support frames B26 having a base end portion B28 rotatably supported by the rear frame B23, and left and right back frames B27 extending upward from the upper end of the rear leg B22. The front leg B21 and the side frame B24 are integrally formed by bending a common metal pipe material, and the rear end of the side frame B24 is rigidly connected to the upper end of the rear leg B22 by welding or the like. The front leg B21, the rear leg B22, the side frame B24, the front frame B25, the rear frame B23, the support frame B26, and the back frame B27 are strong enough to receive a load acting on the seat plate B3 and the back plate B4. I have. The seat plate B3 is supported on the front end portion and the rear end portion of the support frame B26, and the use position (U) where the seat plate B3 is substantially horizontal and the seat plate B3 are substantially parallel to the back plate B4. It can be rotated between a flip-up position (not shown). A concave portion B291 is formed in the intermediate portion B29 of the support frame B26, and the concave portion B291 is engaged with the front frame B25 at the use position (U). The distance between the left and right front legs B21 is set smaller than the distance between the left and right rear legs B22, and can be nested with other chairs having the same structure with the seat plate B3 flipped up. It has become.

  As shown in FIGS. 5 to 7, the seat plate B3 includes a plate material B31 and front and rear mounting bodies B32 and B33 protruding from the lower surface of the plate material B31. In this embodiment, the seat plate B3 is made of resin. It is molded integrally.

  As shown in FIGS. 5 to 7, the plate member B31 has a peripheral part B5 supported by the left and right support frames B26 of the chair body B2, and an intermediate part B6 located inside the peripheral part B5. The intermediate portion B6, which is formed integrally, has a structure in which the specific portion of the intermediate portion B6, in this embodiment, the entire region of the intermediate portion B6 is provided with the belt-like member and the connecting piece.

  As shown in FIGS. 5 to 7, the peripheral edge B5 includes side edge portions B51 located on the left and right sides of the intermediate portion B6, a rear edge portion B52 located on the rear side of the intermediate portion B6, and an intermediate portion B6. And a front edge portion B53 located on the front side.

  The intermediate portion B6 has the same structure as that of the first embodiment, and in FIGS. 5 to 7, the detailed configuration is omitted and the intermediate portion B6 is indicated by shading.

  As shown in FIGS. 6 and 7, the attachment bodies B32 and B33 are integrally provided on the lower surfaces of the front edge portion B53 and the rear edge portion B52. The front attachment body B32 is provided at the front edge portion B53 of the peripheral edge portion B5, and the rear attachment body B33 is provided at the rear edge portion B52 of the peripheral edge portion B5. The front end of the support frame B26 is slidably attached to the front mounting body B32 in the front-rear direction, and the rear end of the support frame B26 is detachably attached to the rear mounting body B33. Between the front and rear mounting bodies B32 and B33, the support frame B26 and the intermediate portion B6 of the seat plate B3 are separated by a gap B34, and the gap B34 causes the intermediate portion B6 in the thickness direction. Elastic deformation is allowed.

  As shown in FIGS. 5 to 7, the back plate B4 is provided with mounting holes B41 that open downward on both side edges. By fitting the mounting holes B41 into the back frame B27, the back plate B4 is provided. Is supported by the chair body B2.

With such a structure, the chair can be used in the same manner as a conventional nestable chair, and the seat plate can achieve the effect according to the first embodiment described above. A third embodiment will be described with reference to FIGS.

  In this embodiment, the present invention is applied to a chair C1 capable of synchro-rocking, in which the back plate C4 and the seat plate C3 are tilted synchronously at a constant ratio. The chair C1 is formed by supporting a seat plate C3 and a back plate C4 on a chair body C2.

  As shown in FIGS. 8 and 9, the chair main body C2 includes a leg C21 having casters C211, a support base C22 supported by the upper end of the leg C21, and a back support supported to be tiltable by the support base C22. A collar C23, a seat support C24 disposed above the back support collar C23 and the support base C22, and a support mechanism C25 for supporting the seat support C24 on the support base C22 and the back support collar C23. . The seat receiver C24 includes an annular seat frame C26, mounting plates C27 provided at four corners of the seat frame C26, and a front connecting portion C28 and a rear connecting portion C29 for connecting to the support mechanism C25. It becomes. Then, a seat plate C3 is placed on the seat frame C26, and the seat plate C3 is supported in a fixed state on the seat frame C26 by a fastening tool such as a bolt (not shown) inserted through the mounting plate C27. . For example, as schematically shown in FIG. 9, the support mechanism C25 includes a front link element C251 having a free end structure that connects the front connection portion C28 of the seat frame C26 to the front end portion of the support base C22, and a back support rod. And a seat mounting portion C252 which is provided at an intermediate portion of C23 and rotatably supports the rear connection portion C29 of the seat frame C26.

  As shown in FIGS. 8 and 9, the seat plate C3 includes a resin plate material C31 and a buried nut (not shown) provided on the lower surface side of the plate material C31, and is inserted through the mounting plate C27. A fixed fastener is screwed onto the embedded nut.

  As shown in FIGS. 8 and 9, the plate member C31 has a peripheral portion C5 supported by the seat frame C26 of the chair body C2 and an intermediate portion C6 located inside the peripheral portion C5, and is integrally formed with resin. The intermediate portion C6 is formed in a specific portion, and in this embodiment, the entire region of the intermediate portion C6 has a structure including the belt-like member and the connecting piece.

  As shown in FIGS. 8 and 9, the peripheral portion C5 includes a side edge portion C51 located on the left and right sides of the intermediate portion C6, a rear edge portion C52 located on the rear side of the intermediate portion C6, and an intermediate portion C6. And a front edge portion C53 located on the front side. The side edge portion C51 is curved downward so as to wrap around the seat frame C26. The rear edge portion C52 is curved rearward and upward. The front edge portion C53 is curved toward the front lower side.

  The intermediate portion C6 has the same structure as that of the first embodiment. In FIG. 8, the detailed configuration is omitted, and the intermediate portion C6 is indicated by shading.

  As shown in FIG. 9, the back plate C4 is attached to the upper end portion of the back support rod C23 so that the back plate C4 is supported by the chair body C2, and is integrated with the back support rod C23 in the rear. It is designed to tilt.

  With such a configuration, the chair can be used in the same manner as a conventional chair that can be synchro-clocked, and the seat plate can achieve an effect according to the first embodiment described above. In particular, in this embodiment, as shown in FIG. 8, the front connecting portion C28 and the rear connecting portion C29 of the seat frame C24 are not structured to connect the left and right sides of the seat frame C26 under the range where the seat plate C3 bends. There is nothing that hinders downward deformation of the seat plate C3. Therefore, it is possible to set a large range in which the seat plate C3 can be deformed.

  Next, a fourth embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, the present invention is applied to a chair D1 that can be stacked in the vertical direction and can be nested in the front-rear direction. The chair D1 is formed by supporting a seat plate D3 and a back plate D4 on a chair body D2.

  As shown in FIG. 10, the chair body D2 includes left and right bases D21 placed on the floor via the grounding body D211, left and right front legs D22 extending upward from the front ends of the bases D21, The left and right rear legs D23 extending upward from the rear end of the base D21, the rear frame D24 installed between the upper ends of the rear legs D23, the vicinity of both ends of the rear frame D24, and the upper ends of the front legs D22 The left and right side frames D25 to be connected, the front frame D26 installed between the front end vicinity portions of the side frames D25, and the left and right back frames D27 extending upward from the upper end of the rear leg D23 are provided. The base D21, the front leg D22, the rear leg D23, the side frame D25, and the back frame D27 are integrally formed by bending a common metal wire, and act on the seat plate D3 and the back plate D4. It is strong enough to receive a load. The seat plate D3 is placed on the left and right side frames D25 and the front frame D26, and is rotatably supported by the rear frame D24. As shown in FIGS. 10 and 11, the seat plate D3 is provided. As shown in FIG. 12, the seat plate D3 can rotate between a use position (U) that is substantially horizontal and a flip-up position (L) that is substantially parallel to the back plate D4.

  As in the first embodiment, the distance between the left and right bases D21 is set to be greater than the distance between the left and right side frames D25. As shown in FIG. The chair D1 can be stacked in the vertical direction. In particular, when stacking in the vertical direction as shown in FIG. 11, the lower surface of the installation body D211 of the upper chair D1 adjacent in the vertical direction is placed on the upper surface of the base D21 of the lower chair D1, It is set so that the seat plates D3 of the chair D1 do not directly contact each other. Therefore, when stacking in the vertical direction, the seat plate D3 of the upper chair D1 does not float up in the flip-up direction.

  The distance between the left and right front legs D21 is set to be smaller than the distance between the left and right rear legs D22. As shown in FIG. 12, the same structure is formed with the seat plate D3 flipped up. It can be nested with other chairs. That is, the separation distance between the left and right side frames D25 and the separation distance between the left and right bases D21 are set so as to gradually decrease toward the front.

  As shown in FIG. 10, the seat plate D3 includes a plate material D31 and a mounting body D32 projecting from the lower surface of the plate material D31. In this embodiment, the seat plate D3 is integrally formed of resin.

  As shown in FIG. 10, the plate member D31 includes a peripheral part D5 supported by the left and right side frames D25, the front frame D26, and the rear frame D24 of the chair body D2, and an intermediate part D6 positioned inside the peripheral part D5. And a specific portion of the intermediate portion D6, in this embodiment, the entire region of the intermediate portion D6 has a structure including the belt-like member and the connecting piece.

  As shown in FIG. 10, the peripheral edge portion D5 is positioned on the left and right sides of the intermediate portion D6, the rear edge portion D52 located on the rear side of the intermediate portion D6, and the front side of the intermediate portion D6. And a leading edge portion D53. The side edge portion D51 is curved downward so as to wrap around the side frame D25. The rear edge portion D52 is curved rearward and upward. The front edge portion D53 is curved toward the front lower side.

  The intermediate part D6 has the same structure as that of the first embodiment, and in FIG. 10, the detailed form is omitted and the intermediate part D6 is shown by shading.

  As shown in FIG. 10, the attachment body D32 is integrally provided on the lower surface of the rear edge portion D52. The mounting body D32 has a groove D321 having a C-shaped cross section, and the seat D3 is attached to the chair body D2 by rotatably engaging the groove D321 with the rear frame D25. Yes.

  As shown in FIG. 10, the back plate D4 is provided with mounting holes D41 that open downward on both side edges. By fitting the mounting holes D41 into the back frame D27, the back plate D4 is attached to the chair body. D2 is supported.

  With such a configuration, stacking in the vertical direction as shown in FIG. 11 and nesting in the front-rear direction as shown in FIG. 12 can be performed. The effect according to one embodiment is obtained.

Next, a fifth embodiment, which is a reference example of the present invention, will be described with reference to FIG.

  In this embodiment, the present invention is applied to a chair (not shown as a whole) that can be stacked in the vertical direction. In this chair, a seat body E3 shown in FIG. 13 and a back plate (not shown) are supported on a chair body having the same configuration as that of the first embodiment.

  A plate material E31 of the seat plate E3 shown in FIG. 13 has a peripheral edge portion E5 and an intermediate portion E6 and is integrally formed of resin. Since the peripheral edge E5 has the same configuration as that of the first embodiment, description thereof is omitted.

  The intermediate portion E6 is provided with a plurality of strip-shaped members E61 that can be bent in the thickness direction adjacent to each other, and the adjacent strip-shaped members E61 are connected to each other by a connecting piece E62 that is narrower than the strip-shaped member E61. It has a structure in which each is connected to be elastically deformable with a longer path. In this embodiment, the said specific location is set to two right and left adjacent places of the said intermediate part E6, and the said strip | belt-shaped member E61 and the connection piece E62 are arrange | positioned in those specific locations, respectively.

  Each of the belt-like members E61 has an annular shape, and a plurality of belt-like members E61 are arranged concentrically. Each belt-like member E61 has a tear shape in which the rear portion has a semicircular arc shape and the width gradually decreases toward the front.

  Each connection piece E62 is arranged so as to connect two places of the adjacent belt-like member E61, and can be connected to be elastically deformable with a longer path than connecting the two places of the belt-like member E61 with a straight line. It has a shape. Specifically, each connection piece E62 has a wave shape, and in this embodiment, each connection piece E62 is disposed adjacent to the inner edge of one belt-like member E61 and the inside of the one belt-like member E61. The outer edge of the other belt-like member E61 is connected at a position connecting with a route longer than the shortest distance. That is, the connecting pieces E62 are arranged so as to fill the space between the adjacent belt-like members E61 with a substantially constant gap.

  Further, the middle portion E6 is separated from the belt-like member E61 and the connecting piece E62, the innermost portion of the belt-like member E61 in the right specific portion and the innermost portion of the belt-like member E61 in the left specific portion. An auxiliary member E63 having a substantially linear shape capable of elastically deforming the portion located in the position is provided. And these strip | belt-shaped member E61, the connection piece E62, and the auxiliary member E63 are arrange | positioned in the substantially same surface.

  If it is the thing of such a structure, the effect according to 1st Embodiment mentioned above will be acquired. That is, in the front-rear and left-right directions of the seat plate E3, it is possible to obtain a bending characteristic corresponding to the weight distribution from the seated person's buttocks to the thighs. In particular, in this embodiment, since the above-described configuration is provided at two locations of the intermediate portion E6, the portion that receives the buttocks of the seated person is most easily deformed according to the weight. Therefore, it becomes possible to support the whole buttocks equally and to improve sitting comfort. Further, in the first embodiment, the intermediate portion A6 illustrated in FIGS. 1 to 4 may cause a seated person to feel uncomfortable because there is a relatively large gap in the seat plate A3. Thus, if the belt-like member E61, the connecting piece E62, and the auxiliary member E63 are densely arranged so as to fill the gap in the intermediate portion E6, there is no possibility of giving the above-mentioned uncomfortable feeling.

  Moreover, the seat board which comprises the structure according to the seat board of 5th Embodiment demonstrated above is used for the chair main body of the said 2nd Embodiment, the chair main body of the said 3rd Embodiment, or the chair main body of the said 4th Embodiment. Combinations are also conceivable.

  The present invention is not limited to the embodiment described above.

  The plate body is not limited to the one constituting the seat plate, but may constitute the back plate.

  Of course, the belt-like member and the connection piece are not limited to those arranged on the same plane, and various modifications such as, for example, undulating the connection piece in the thickness direction are possible.

  In addition, the cross-sectional shape of the belt-shaped member may be, for example, one in which a circular or elliptical equiangular edge is eliminated. If it is such, even if the belt-like member is bent downward by sitting and twisted in the front-rear and left-right directions, the belt-like member has no corner edge, so the corner edge does not hit the seated person, Sitting comfort is further improved. Similarly to the band-shaped member described above, the cross-sectional shape of the connecting piece can be such that the corner edge portion is eliminated.

  The surplus length of each band-shaped member may be set so as to gradually change. For example, each belt-like member in the intermediate portion may change its length gradually from the front side to the rear side of the seat plate, or may change its length gradually from the center of the seat plate toward the left and right. It is done.

  The seat plate may be one in which the upper surface of the plate material is covered with a stretch fabric, or further, a cushion interposed between the stretch fabric and the plate material.

  Further, the material of the plate material is not limited to the resin for molding the chair shell and the like, and an elastomer may be used.

  In the embodiment described above, the entire intermediate portion has a structure including the belt-like member and the connection piece, but the present invention is not limited to such a structure, and the above-described embodiment is limited to a partial region of the intermediate portion. A belt-like member and a connecting piece may be provided. As an example, it is conceivable that the belt-like member and the connecting piece are provided in a plurality of regions in the intermediate part.

  Of course, the mounting body of the seat plate is not limited to that of the illustrated embodiment, but may be one in which a separate mounting body is attached to the plate material in addition to the one provided integrally with the plate material. . Also, the shape of the attachment body can be variously changed. For example, instead of the attachment body A32 in the first embodiment, the one shown schematically in FIG. 14 is conceivable. The attachment body F7 is a protrusion that is integrally provided on the lower surface of the side edge portion F51 of the peripheral edge portion F5 and protrudes downward, and the tip end portion F71 is curved outward. That is, the mounting body F7 and the edge F511 at the side edge portion F51 of the peripheral edge F5 curved downward constitute a groove F72 having a C-shaped cross section, and the groove F72 is related to the side frame F25. The seat board F3 is attached to the chair main body F2 by matching. The groove F72 is shaped to wrap around the side frame F25, and the opening end F73 of the groove F72 and the lower end portion of the side frame F25 substantially coincide with each other.

  If it is such, compared with 1st Embodiment, since the seat board F3 can be approached by the side frame F25, a stack pitch can be made smaller and it becomes possible to raise stacking efficiency. .

  The front frame of the first embodiment has a gap between the lower surface of the intermediate portion and the upper surface of the front frame when the intermediate portion is bent in the thickness direction. The lower surface of the part may be in contact with the upper surface of the front frame to limit the downward bending range of the intermediate part.

  In the support frame of the second embodiment, when the intermediate portion is bent in the thickness direction, a gap is still interposed between the lower surface of the intermediate portion and the upper surface of the support frame. The lower surface of the part may be in contact with the upper surface of the support frame to limit the downward bending range of the intermediate part.

  The support mechanism of the third embodiment is such that the front end side of the seat frame is supported by the support base via the front link element, and the rear end side of the seat frame is pivotally supported by the seat mounting portion of the back support rod. However, the present invention is not limited to this, and any suitable one can be used as long as the back plate and the seat plate can be synchronized and tilted at a constant ratio.

  In addition, you may change variously in the range which does not impair the meaning of this invention.

A1, B1, C1, D1 ... Chair A2, B2, C2, D2 ... Chair main body A3, B3, C3, D3, E3 ... Seat plate A31, B31, C31, D31, E31 ... Plate material A4, B4, C4, D4 ... Back plate A5, B5, C5, D5, E5 ... Peripheral part A6, B6, C6, D6, E6 ... Middle part A61, E61 ... Strip member A62, E62 ... Connection piece

Claims (5)

A chair having a seat body and a back plate supported on a chair body,
At least one of the seat plate and the back plate is arranged adjacent to each other with a plurality of belt-shaped members that can be bent in the thickness direction, and the adjacent belt-shaped members are connected by a connecting piece having a narrower width than the belt-shaped member. der those with a plate forming a structure in which each connected to elastically deformable with a longer path than is,
The plate member has a peripheral portion supported by the chair body, and an intermediate portion located inside the peripheral portion,
Each of the band-shaped members is arranged so as to connect two positions of the peripheral edge portions facing each other, and has a shape that can be connected in an elastically deformable manner with a longer path than connecting the two peripheral edge portions with a straight line. And
Each strip is a chair, characterized in der Rukoto those having different excess length with respect to a straight line with each other. The plate member has a peripheral portion supported by the chair body and an intermediate portion located inside the peripheral portion and is integrally formed of resin, and the specific portion of the intermediate portion is the belt-shaped member. 2. The chair according to claim 1, wherein the chair comprises a connection piece. The chair according to claim 1 or 2, wherein the surplus length of each belt-like member is set so as to gradually change. The chair according to claim 1 or 2 , wherein a surplus length of a specific belt-shaped member is set to be different from a surplus length of another belt-shaped member. The chair according to claim 1, 2, 3, or 4, wherein the belt-shaped member and the connection piece are arranged in substantially the same plane, and at least one of the belt-shaped member and the connection piece has a wave shape.

Images