JP6594720B2 - Furniture surface components and furniture - Google Patents

Description

  The present invention relates to a furniture surface component and furniture.

As a backrest of a chair, a configuration including a frame-like backrest frame and a tension member stretched on the backrest frame so as to close an opening of the backrest frame is known (for example, the following) Patent Literatures 1 to 3). The backrest frame is formed with a fitting recess for attaching a tension material.
The upholstery has a mesh-like sheet body and an edge member provided at the edge of the sheet body. The edge material is fitted in the fitting recess together with the edge of the sheet main body.

By the way, in the tension material mentioned above, the seat body receives a load in a direction perpendicular to the surface (thickness direction) with its own restoring force and the seating of the seated person. Therefore, in order to improve the reliability and durability of the chair, it is necessary to secure the fixing strength between the seat body and the rim material and the fixing strength between the rim material and the backrest frame.
However, in the configuration of Patent Document 1 described above, since the edge member is held in the fitting recess only by the frictional resistance due to the fitting into the fitting recess, the edge member and the backrest frame are fixed. There was still room for improvement in terms of securing strength. In particular, the edge member is generally made of a softer material than the backrest frame, and thus may be deformed by a load acting on the seat body. For this reason, it has been difficult to maintain the fixing strength between the rim material and the backrest frame due to the aging of the rim material.

  Thus, for example, Patent Document 2 below discloses a configuration in which a retaining means for preventing the edge material from coming out of the fitting recess is provided. The retaining means includes an engaging portion provided on the edge member, and an engaged portion that protrudes from the inner surface of the fitting recess and engages with the engaging portion. In Patent Document 2, the backrest frame is formed by extrusion molding.

Japanese Patent No. 4652767 JP 2011-045573 A JP 2013-94284 A

  However, when the backrest frame is formed by injection molding, it is difficult to form the engaged portion in the midway portion in the extending direction of the fitting recess as in Patent Document 2. In this case, for example, at the time of molding, after performing a step of sliding the mold in the opening direction of the fitting recess, it is necessary to slide another mold in a direction orthogonal to the opening direction. As a result, the mold configuration becomes complicated, leading to an increase in manufacturing cost and a decrease in manufacturing efficiency.

  The present invention has been made in view of the above circumstances, and provides a furniture surface component member and furniture that can secure the fixing strength between the edge member and the support portion while reducing costs and improving manufacturing efficiency. The purpose is to do.

In order to achieve the above object, the furniture surface component member according to the present invention is disposed at a distance from each other, and has at least two support portions each having a fitting recess opening on the outer peripheral surface, and between the support portions. In the furniture surface constituting member provided with the furniture sheet to be laid, the furniture sheet is provided at the edge of the sheet main body and the sheet main body, and is fitted in the corresponding fitting recess. The fitting recess extends in a first direction, extends in a second direction intersecting the first direction, and extends in the first direction, and in the second direction. The rear end of the second recess is located on the back side in the second direction with respect to the first recess, and the second recess communicates with the first recess, and the boundary between the first recess and the second recess. An engagement portion formed, wherein the engagement portion is formed in the first recess. The surface located on the opposite side to the opening side, with defining a part of the inner surface of said second recess, exposed through the opening of the second recess, wherein the strip is of the engagement portion Of these , an engaged portion is provided that is engaged with a surface located on the side opposite to the opening side of the first recess .
According to this configuration, for example, the edge material can be firmly fixed to the support portion as compared with the conventional case where the edge material is fixed to the fitting recess only by fitting (friction resistance). Thereby, it is possible to secure the fixing strength between the edge member and the support part and to prevent the edge member from coming out of the fitting recess. In this case, if the edge member is deformed by a load acting on the seat body, even if the frictional resistance between the edge member and the fitting recess is reduced, the edge member can be prevented from coming out of the fitting recess. . As a result, the fixing strength between the edge member and the support portion can be maintained over a long period of time.
In particular, among the engaging portions formed at the boundary between the first recess and the second recess, the surface located on the opposite side of the opening of the first recess is exposed through the opening of the second recess. Therefore, when the support portion is formed by injection molding, the engaging portion can be formed in a portion defined by the mold that molds the first recess and the mold that molds the second recess. Thereby, since an engaging part can be easily formed in a fitting recessed part, cost reduction and improvement of manufacturing efficiency can be aimed at.
In addition, since the first direction and the second direction intersect, simply by moving the mold that molds the first recess and the mold that molds the second recess in the intersecting direction, these molds The engaging portion can be formed on the portion defined by the above. Thereby, further cost reduction and improvement of manufacturing efficiency can be aimed at. In addition, since the opening direction of the first recess and the second recess can be made different in the fitting recess, for example, the opening of each recess can be set at a position where it is difficult to visually recognize, etc. Improvements can be made.

In the furniture surface constituting member according to the present invention, the engaging portion may protrude in a direction intersecting the first direction in the first recess.
According to this structure, since the engaging part protrudes in the direction which cross | intersects the extension direction of a 1st recessed part in a 1st recessed part, the engagement area of an engaging part and a to-be-engaged part is securable. Thereby, an edge material can be firmly fixed to a support part.

In the furniture surface component according to the present invention, the surface of the engagement portion that is located on the opening side of the first recess has a protruding height toward the second recess in the first direction. You may form in the inclined surface which becomes gradually high.
According to this structure, since the surface located in the opening part side of a 1st recessed part is formed in the inclined surface among the engaging parts, when assembling an edge material in a fitting recessed part, the engagement of an edge material is carried out. It becomes easy for the joint part to get over the engaging part. Thereby, assembly property can be improved.

In the furniture surface constituting member according to the present invention, a surface of the engaging portion that is located on the opposite side of the first recess from the opening side is an upright surface that extends in a direction intersecting the first direction. Is formed.
According to this structure, since the surface located on the opposite side to the opening part side of a 1st recessed part is formed in the standing surface among the engaging parts, an edge material can be firmly fixed to a support part.

The furniture according to the present invention includes the furniture surface component of the present invention.
According to this configuration, since the furniture surface constituting member of the present invention is provided, furniture excellent in reliability and durability can be provided.

  According to the present invention, it is possible to secure the fixing strength between the edge member and the support portion while reducing the cost and improving the production efficiency.

It is the perspective view which looked at the chair concerning an embodiment from the front. It is the perspective view which looked at the chair concerning an embodiment from back. It is a disassembled perspective view of the backrest which concerns on embodiment. It is a front view of the backrest frame concerning an embodiment. It is sectional drawing which follows the VV line | wire of FIG. 4 which concerns on embodiment. It is sectional drawing which follows the VI-VI line of FIG. It is sectional drawing which follows the VII-VII line of FIG. It is the rear view which looked at the vertical edge material which concerns on embodiment from back. It is sectional drawing equivalent to the IX-IX line of FIG. 8 which shows the state before fixing to a sheet | seat main body. It is a bottom view of the upper edge material which concerns on embodiment. It is a bottom view of the lower edge material which concerns on embodiment. It is sectional drawing which follows the XII-XII line | wire of FIG. It is process drawing for demonstrating the manufacturing method of a tension material, Comprising: It is sectional drawing corresponded in FIG. It is process drawing for demonstrating the manufacturing method of a tension material, Comprising: It is sectional drawing corresponded in FIG. It is process drawing for demonstrating the manufacturing method of a tension material, Comprising: It is sectional drawing corresponded in FIG. It is sectional drawing which shows the fitting recessed part which concerns on the modification of embodiment. It is sectional drawing which shows the fitting recessed part which concerns on the modification of embodiment. It is sectional drawing which shows the fitting recessed part which concerns on the modification of embodiment. It is sectional drawing which shows the fitting recessed part which concerns on the modification of embodiment.

  Next, embodiments of the present invention will be described with reference to the drawings. In the following description, the front / rear / up / down / left / right orientations and the like are assumed to be the same as those of the person (sitting person) seated in the chair 1 in a normal posture. In the figure, the arrow UP indicates upward, the arrow FR indicates forward, and LH indicates leftward.

[Chair]
FIG. 1 is a perspective view of the chair 1 as viewed from the front.
FIG. 2 is a perspective view of the chair 1 as seen from the rear.
As shown in FIGS. 1 and 2, a chair (furniture) 1 includes a leg 2, a support base 3 disposed at the upper end of the leg 2, a seat 4 supported by the support base 3, An armrest 5 disposed on both the left and right sides of the seat body 4 and a backrest (furniture surface constituent member) 6 extending upward from the rear end portion of the support base 3 are provided.

The leg 2 includes a diverging leg 7 and a pedestal 8 that is erected from the center of the diverging leg 7.
A caster 7 a that can run on the floor is attached to each leg portion of the multi-leg 7.
The leg column 8 incorporates a gas spring or the like (not shown) that is a lifting mechanism.

  The support base 3 is attached to the upper end portion of the pedestal column 8. The support base 3 incorporates a lifting adjustment mechanism (not shown) that adjusts the lifting mechanism described above, a tilt adjustment mechanism (not shown) of the backrest 6, and the like.

The seat body 4 supports a seated person's buttocks and the like from below.
The armrests 5 extend from the support base 3 to the left and right sides, respectively, and then extend upward on the left and right sides with respect to the seat body 4. The armrest 5 supports the arm of the seated person from below.

[Backrest]
The backrest 6 is disposed behind the seat body 4 and the armrest 5. The backrest 6 supports the seated person's waist and back from behind. The backrest 6 is formed in a convex arc shape toward the rear in a plan view seen from above. Further, the backrest 6 is formed in a gentle S-shape as viewed from the left and right.

FIG. 3 is an exploded perspective view of the backrest 6.
FIG. 4 is a front view of the backrest frame 11.
As shown in FIGS. 3 and 4, the backrest 6 includes a backrest frame 11, a tension member (furniture sheet) 12 provided on the backrest frame 11, and the backrest frame attached to the support base 3 described above. Mounting bracket 13 for the purpose.
The backrest frame 11 is formed in a rectangular frame shape in plan view as viewed from the front. The backrest frame 11 functions as a strength member when supporting the load of the seated person. Specifically, the backrest frame 11 includes a pair of vertical frame portions (support portions) 21 disposed on both left and right sides, an upper frame portion (support portion) 22 that connects the upper end portions of the vertical frame portions 21, and a vertical frame. And a lower frame portion (support portion) 23 for connecting the lower end portions of the frame portion 21 to each other. A mounting arm 24 that extends downward toward the front is connected to the lower frame portion 23. The backrest frame 11 is made of, for example, a resin material, and is integrally formed by injection molding. However, the backrest frame 11 may be formed separately as appropriate.

  The mounting bracket 13 is provided at the front end of the mounting arm 24. The mounting bracket 13 is attached to the support base 3 below the seat body 4. The mounting bracket 13 is made of, for example, metal.

  Fitting recesses 31 to 33 for attaching the upholstery material 12 are formed in the frame portions 21 to 23 of the backrest frame 11 so as to open toward the outside of the frame portions 21 to 23. The fitting recesses 31 to 33 include a vertical fitting recess 31 formed in the vertical frame portion 21, an upper fitting recess 32 formed in the upper frame portion 22, and a lower fitting recess 33 formed in the lower frame portion 23. It is.

FIG. 5 is a cross-sectional view taken along line VV in FIG.
As shown in FIGS. 4 and 5, the vertical fitting concave portion 31 includes a first vertical concave portion 31 a and a second vertical concave portion 31 b. In addition, since each vertical fitting recessed part 31 is a symmetrical structure in each vertical frame part 21, the following description demonstrates the vertical fitting recessed part 31 formed in the one (left side) vertical frame part 21, The description of the vertical fitting recess 31 formed in the other vertical frame portion 21 is omitted.

  The first vertical recess 31 a is formed on a surface (hereinafter referred to as an outer surface) located on the outer side in the left-right direction of the vertical frame portion 21. Specifically, the first vertical recess 31 a is recessed from the outer surface of the vertical frame portion 21 toward the inner side in the left-right direction. In other words, the first vertical recess 31 a is opened outward in the left-right direction on the outer surface of the vertical frame portion 21. The first vertical recess 31a extends along the vertical frame portion 21 in the vertical direction.

  The 2nd vertical recessed part 31b is formed in the front surface of the vertical frame part 21 at intervals in the up-down direction. The second vertical recess 31b is recessed from the front surface of the vertical frame portion 21 toward the rear. The rear end of the second vertical recess 31b communicates with the inner end in the left-right direction of the first vertical recess 31a. In this case, the extending direction (first direction) of the first vertical recess 31a and the extending direction (second direction) of the second vertical recess 31b are orthogonal to each other. However, the intersection angle between the extending direction of the first vertical recess 31a and the extending direction of the second vertical recess 31b can be changed as appropriate. In the illustrated example, the rear end portion of the second vertical recess portion 31b is located behind the first vertical recess portion 31a.

As shown in FIG. 5, a vertical frame engaging portion (engaging portion) 35 protruding forward is formed at a boundary portion between the first vertical concave portion 31a and the second vertical concave portion 31b. The vertical frame engaging portion 35 is formed in a triangular shape in a cross-sectional view along the left-right direction. Of the vertical frame engaging portion 35, a surface located on the outer side in the left-right direction (a surface located on the opening side of the first vertical recess 31a (hereinafter referred to as a guide surface)) is an inner surface of the first vertical recess 31a. Part of it. The guide surface is an inclined surface extending forward as it goes inward in the left-right direction.

  On the other hand, among the vertical frame engaging portions 35, the surface located on the inner side in the left-right direction (the surface positioned on the side opposite to the opening side of the first vertical recess 31a (hereinafter referred to as the engaging surface)) is the first. A part of the inner surface of the two vertical recesses 31b is defined. The engaging surface is a standing surface extending in a direction orthogonal to the extending direction of the first vertical recess 31a (the extending direction of the second vertical recess 31b). That is, the engaging surface of the vertical frame engaging portion 35 is exposed to the outside of the vertical frame portion 21 through the opening of the second vertical concave portion 31b. In the case of “exposing” to the outside of the vertical frame portion 21 through the opening of the second vertical recess 31b, the engagement surface faces the extending direction of the second vertical recess 31b, or the engagement surface is This is a case where it faces the opening of the second vertical recess 31b. The definition of “exposure” is the same for the upper fitting recess 32 and the lower fitting recess 33. Further, as long as the vertical frame engaging portion 35 is formed at the boundary portion between the first vertical concave portion 31a and the second vertical concave portion 31b, the protruding direction is not limited to the front, and may protrude rearward.

6 is a cross-sectional view taken along line VI-VI in FIG.
As shown in FIG. 6, the upper fitting recess 32 has a first upper recess 32a and a second upper recess 32b.
As shown in FIG. 6, the first upper recess 32 a is recessed forward from the rear surface of the upper frame portion 22. That is, the first upper concave portion 32 a is opened rearward on the rear surface of the upper frame portion 22. As shown in FIG. 4, the first upper recess 32 a extends along the left and right direction of the upper frame portion 22.

  The second upper concave portion 32b is formed on the front surface of the upper frame portion 22 with an interval in the left-right direction. As shown in FIG. 6, the second upper recess 32 b is recessed from the front surface of the upper frame portion 22 toward the rear. The rear end portion of the second upper recess portion 32b communicates with the front end portion of the first upper recess portion 32a. In the illustrated example, the extending direction (first direction) of the first upper recessed portion 32a and the extending direction (second direction) of the second upper recessed portion 32b coincide with each other. Accordingly, the portion of the upper fitting recess 32 where the second upper recess 32b is formed penetrates the upper frame portion 22 in the front-rear direction through the first upper recess 32a and the second upper recess 32b. However, the crossing angle between the extending direction of the first upper recessed portion 32a and the extending direction of the second upper recessed portion 32b can be appropriately changed.

  An upper frame engaging portion 36 that protrudes upward is formed at a boundary portion between the first upper concave portion 32a and the second upper concave portion 32b. The upper frame engaging portion 36 is formed in a triangular shape in a longitudinal sectional view along the vertical direction. A rear surface of the upper frame engaging portion 36 (a surface located on the opening side of the first upper concave portion 32a (hereinafter referred to as a guide surface)) defines a part of the inner surface of the first upper concave portion 32a. The guide surface is an inclined surface that extends upward as it goes forward.

  On the other hand, the front surface of the upper frame engaging portion 36 (a surface located on the side opposite to the opening side of the first upper concave portion 32a (hereinafter referred to as an engaging surface)) is a part of the inner surface of the second upper concave portion 32b. Is defined. The engaging surface is a standing surface extending in a direction orthogonal to the extending direction of the first upper recess 32a and the second upper recess 32b. That is, the engaging surface of the upper frame engaging portion 36 is exposed to the outside of the upper frame portion 22 through the opening of the second upper concave portion 32b. In addition, as long as the upper frame engaging part 36 is formed in the boundary part of the 1st upper recessed part 32a and the 2nd upper recessed part 32b, the protrusion direction may not protrude upward but may protrude below.

7 is a cross-sectional view taken along line VII-VII in FIG.
As shown in FIGS. 4 and 7, the lower fitting recess 33 has a first lower recess 33a and a second lower recess 33b.
As shown in FIG. 7, the first lower recess 33 a is recessed from the front surface of the lower frame portion 23 toward the rear. That is, the first lower concave portion 33 a is opened forward on the front surface of the lower frame portion 23. The first lower recess 33a extends along the left and right direction of the lower frame portion 23.

  As shown in FIG. 4, among the first lower concave portion 33a described above, a plurality of portions spaced in the left-right direction are wide portions 34a. The wide portion 34a is wider in the vertical direction than the portion of the first lower recess 33a other than the wide portion 34a (hereinafter simply referred to as the narrow portion 34b). Specifically, as shown in FIG. 7, the wide portion 34a is recessed downward with respect to the narrow portion 34b. In this case, among the inner surfaces of the wide portion 34a and the narrow portion 34b, the top surfaces (the upper surface of the first lower recess 33a) are flush with each other. On the other hand, the bottom surface of the wide portion 34a is located below the bottom surface of the narrow portion 34b. Therefore, a portion of the lower frame portion 23 that defines the bottom surface of the wide portion 34a is a bulging portion 23a that bulges downward with respect to a portion that defines the bottom surface of the narrow portion 34b. In addition, the number and position of the wide part 34a can be changed suitably.

  The second lower recess 33b is formed in the lower frame portion 23 at a position corresponding to the above-described wide portion 34a. The second lower recess 33b is recessed from the rear end portion of the bulging portion 23a described above toward one side in the left-right direction. That is, the second lower concave portion 33b communicates with the wide portion 34a at the rear end portion of the wide portion 34a. Therefore, the extending direction (first direction) of the first lower concave portion 33a (wide portion 34a) and the extending direction (second direction) of the second lower concave portion 33b are orthogonal to each other in a plan view as viewed from above and below. is doing. However, the intersecting angle between the extending direction of the first lower recessed portion 33a and the extending direction of the second lower recessed portion 33b can be appropriately changed.

  The second lower concave portion 33b described above is opened toward the other side and the lower side in the left-right direction at the bulging portion 23a of the lower frame portion 23. In the present embodiment, one end in the left-right direction of the second lower recess 33b terminates in the wide portion 34a. However, the second lower recess 33b may penetrate the bulging portion 23a of the lower frame portion 23 in the left-right direction.

  On the bottom surface of the first lower recess 33a, a lower frame engaging portion 37 that protrudes upward is formed at a boundary portion between the first lower recess 33a and the second lower recess 33b. The lower frame engaging portion 37 is formed in a triangular shape in a longitudinal sectional view along the vertical direction. The front surface of the lower frame engaging portion 37 (a surface located on the opening side of the first lower concave portion 33a (hereinafter referred to as a guide surface)) defines a part of the inner surface of the first lower concave portion 33a. The guide surface is an inclined surface that extends upward as it goes rearward.

  On the other hand, the rear surface of the lower frame engaging portion 37 (the surface located on the side opposite to the opening side of the first lower concave portion 33a (hereinafter referred to as the engaging surface)) is a part of the inner surface of the second lower concave portion 33b. Is defined. The engaging surface is an upright surface extending in a direction intersecting the extending direction of the first lower recess 33a (a direction orthogonal to the extending direction of the second lower recess 33b). That is, the engaging surface of the lower frame engaging portion 37 is exposed to the outside of the lower frame portion 23 through the opening of the second lower concave portion 33b. As long as the lower frame engaging portion 37 is formed at the boundary portion between the first lower concave portion 33a and the second lower concave portion 33b, the protruding direction is not limited to the upper side, and may protrude in the left-right direction. .

[Tension material]
As shown in FIG. 3, the upholstery material 12 covers the opening 20 defined by the frame portions 21 to 23 in the backrest frame 11 from the front. Specifically, the tension member 12 includes a sheet main body 51 and edge members 52 to 54 provided at the edge of the sheet main body 51.
The sheet body 51 is formed by combining stretchable synthetic resin fibers in a mesh shape. Accordingly, the sheet main body 51 has through holes penetrating in the thickness direction at intervals over the entire surface direction. The seat body 51 has a plan view outer shape as viewed from the front-rear direction larger than the opening 20 of the backrest frame 11. The sheet body 51 is not limited to a mesh shape, and may be a cloth shape or a film shape, for example. However, it is preferable that the sheet body 51 has a through-hole penetrating in the thickness direction at least at the edge.

  The edge members 52 to 54 are made of, for example, a resin material having higher rigidity than the constituent material of the seat body 51 and softer (lower rigidity) than the backrest frame 11. Specifically, the edge members 52 to 54 are the vertical edge member 52 provided on the left and right side edge portions of the sheet body 51, the upper edge member 53 provided on the upper edge portion of the sheet body 51, and the sheet body 51. This is a lower edge material 54 provided at the lower edge portion.

  As shown in FIG. 5, the vertical edge member 52 is fitted into the first vertical recess 31 a of the vertical fitting recess 31 described above from the outside in the left-right direction. Specifically, the vertical edge member 52 includes a first vertical member 61 disposed on the first surface side of the sheet main body 51 (side edge portion) and a second vertical member disposed on the second surface side of the sheet main body 51. 62 and the hinge part 64 which connects between each vertical member 61 and 62 is provided. In the vertical edge member 52, a first vertical member 61, a second vertical member 62, and a hinge portion 64 are integrally formed. In addition, since each vertical edge material 52 is a left-right symmetric structure, in the following description, one (left side) vertical edge material 52 is demonstrated, and description of the other vertical edge material 52 is abbreviate | omitted.

FIG. 8 is a rear view of the vertical edge member 52 as viewed from the rear. 8 indicates the second vertical member 62 and the hinge portion 64 before the vertical edge member 52 is fixed to the sheet main body 51.
As shown in FIGS. 5 and 8, the first vertical member 61 includes a base portion 65, a step portion 66 rising from the base portion 65, a hook portion (engaged portion) 67 formed on the step portion 66, and have.
The base portion 65 is formed in a plate shape that has a thickness direction in the front-rear direction and extends in the up-down direction. Note that the base portion 65 is formed in an outer shape in which the front view outer shape viewed from the front-rear direction follows the vertical frame portion 21.
The step portion 66 protrudes rearward from the inner edge of the base portion 65 in the left-right direction. In addition, the step part 66 is formed in the base part 65 at intervals in the up-down direction, avoiding the part corresponding to the vertical frame engaging part 35 described above.

  As shown in FIG. 5, the hook portion 67 is engaged with the vertical frame engaging portion 35 described above in the left-right direction. As shown in FIG. 8, the hook portion 67 is formed in a convex arch shape inward in the left-right direction when viewed from the front-rear direction. The hook portion 67 connects the step portions 66 adjacent in the vertical direction. As shown in FIG. 5, the rear surface of the hook portion 67 is a guide surface that is inclined forward as it goes inward in the left-right direction. On the other hand, the surface of the hook portion 67 located outside in the left-right direction is an engagement surface extending in a direction orthogonal to the left-right direction. The engaging surface of the hook portion 67 is in close proximity to or in contact with the engaging surface of the vertical frame engaging portion 35 from the inside in the left-right direction.

  The second vertical member 62 is disposed behind the first vertical member 61 in the vertical fitting recess 31. The second vertical member 62 holds the side edge portion of the seat body 51 between the first vertical member 61 in the front-rear direction. As shown in FIG. 8, the second vertical member 62 is divided into a plurality of parts in the vertical direction (extending direction of the first vertical member 61), and the vertical direction in the first vertical member 61 (base portion 65). It is overlapped in the front-rear direction over the entire direction. However, the number of divisions of the second vertical member 62 can be changed as appropriate. In addition, the second vertical member 62 may be formed integrally with the base portion 65 of the first vertical member 61 that has the same length in the vertical direction.

  As shown in FIG. 5, the hinge portion 64 connects the outer end portions in the left-right direction of the first vertical member 61 and the second vertical member 62 (the front end portion in the insertion direction into the vertical fitting recess 31). ing. Specifically, the hinge portion 64 is formed thinner than the first vertical member 61 and the second vertical member 62. The hinge part 64 is formed in a convex arc shape toward the outer side in the left-right direction. Accordingly, the hinge portion 64 is configured to be elastically deformable in the radial direction (thickness direction) of the hinge portion 64. In the illustrated example, the left and right outer end portions of the hinge portion 64 are located on the inner side in the left and right direction with respect to the opening edge of the vertical fitting recess 31 (first vertical recess 31a).

  As shown in FIG. 5, the first vertical member 61 and the second vertical member 62 are fixed together with the sheet main body 51 by a fixing portion 63. The fixing part 63 penetrates the side edge of the sheet main body 51 in the thickness direction and fixes the first vertical member 61 and the second vertical member 62 to each other in the front-rear direction by welding. That is, the adhering portion 63 wets and spreads between the first vertical member 61 and the second vertical member 62 through the mesh portion (through hole) of the sheet main body 51, and the first vertical member 61 and the second vertical member 62. Are fixed together with the sheet main body 51. In the present embodiment, the term “fixing” refers to chemically joining the first vertical member 61 and the second vertical member 62 together with the sheet body 51, such as welding or adhesion.

FIG. 9 is a cross-sectional view corresponding to the line IX-IX in FIG. 8 showing a state before being fixed to the seat body 51.
Here, as shown in FIG. 9, the fixing portion 63 described above is configured by a protrusion 68 formed integrally with the second vertical member 62 in a state before being fixed to the sheet main body 51. The protruding portion 68 is formed in a conical shape that protrudes in the thickness direction of the second vertical member 62. That is, the protruding portion 68 is gradually reduced in diameter from the base end portion toward the tip end portion. The height of the protrusion 68 is higher than the thickness of the sheet main body 51.
As shown in FIG. 8, the protrusions 68 are arranged in the second vertical member 62 in two rows spaced in the left-right direction and spaced in the vertical direction. In the illustrated example, the protrusions 68 in each row are arranged at different positions (alternately) in the vertical direction. However, the protrusion 68 may be formed on at least one of the first vertical member 61 and the second vertical member 62. In addition, the shape, layout, and the like of the protrusions 68 can be changed as appropriate. For example, the shape of the protrusion 68 is not limited to a cone, and may be a cylinder, a prism, a spherical shape, or the like.

  As shown in FIG. 5, the vertical edge member 52 configured in this way is sandwiched between the side edges of the sheet main body 51 and the sheet main body 51 is wound, as described above, in the vertical fitting recess 31. Is fitted. Specifically, a portion (hereinafter referred to as an inner winding portion 69) of the seat main body 51 that is located on the inner peripheral side with respect to the side edge portion and is located in the vertical fitting recess 31 is hereinafter referred to as an inner winding portion 69. Is folded back 180 ° along the inner end in the left-right direction. That is, the inner winding portion 69 of the sheet main body 51 is bent 90 ° from the side edge portion and extends rearward, and is further bent 90 ° and extends outward in the left-right direction. In the present embodiment, as described above, the guide surface of the vertical frame engaging portion 35 extends forward as it goes inward in the left-right direction (inclined in the direction opposite to the opening direction of the first vertical recess 31a). It has an inclined surface. Therefore, the inner winding portion 69 of the sheet main body 51 avoids interference between the portion positioned on the inner side in the left-right direction with respect to the second vertical member 62 and the vertical frame engaging portion 35, so that the inner winding of the sheet main body 51 is avoided. A load applied to a portion of the portion 69 located on the inner side in the left-right direction than the second vertical member 62 can be reduced.

  Further, the sheet main body 51 is drawn out from the vertical fitting recess 31 and then wraps around the front of the vertical frame portion 21 along the outer peripheral surface of the vertical frame portion 21. Specifically, a portion of the sheet main body 51 that is wound around the outer peripheral surface of the vertical frame portion 21 (hereinafter referred to as the outer winding portion 70) is further folded back by 180 ° with respect to the inner winding portion 69. . That is, the outer winding portion 70 of the sheet main body 51 is bent 90 ° from the inner winding portion 69 and extends forward, and then is further bent 90 ° and extends inward in the left-right direction. A portion of the outer winding portion 70 extending forward is bridged on the outer surface of the vertical frame portion 21 across the hinge portion 64 from the rear of the second vertical member 62. On the other hand, a portion of the outer winding portion 70 that extends inward in the left-right direction extends along the front surface of the vertical frame portion 21 and covers the above-described second vertical recess 31b from the front. In the example of FIG. 5, the boundary portion between the outer surface and the front surface of the vertical frame portion 21 has a convex arc shape toward the outer side in the left-right direction.

As shown in FIG. 6, the upper edge member 53 is fitted into the above-described upper fitting recess 32 from behind. In the following description, in the upper edge member 53, the same reference numerals are assigned to the components corresponding to the vertical edge member 52 described above, and the description thereof is omitted.
The upper edge member 53 includes a first upper member 71 disposed on the first surface side of the sheet body 51 (upper edge portion), a second upper member 72 disposed on the second surface side of the sheet body 51, and A hinge portion 74 for connecting the upper members 71 and 72 to each other.

FIG. 10 is a bottom view of the upper edge member 53.
As shown in FIG. 10, the base portion 65 of the first upper member 71 is formed in an outer shape in which the plan view outer shape viewed from the vertical direction follows the upper frame portion 22. As shown in FIG. 6, the hook portion 67 of the first upper member 71 is engaged with the above-described upper frame engaging portion 36 in the front-rear direction. The engaging surface of the hook portion 67 is close to or abuts with the engaging surface of the upper frame engaging portion 36 from the front.

The second upper member 72 is disposed below the first upper member 71 in the upper fitting recess 32. The second upper member 72 sandwiches the upper edge portion of the sheet main body 51 between the first upper member 71 and the second upper member 72.
The hinge portion 74 connects the rear end portions of the first upper member 71 and the second upper member 72 (the front side end portion in the direction of insertion into the upper fitting recess 32).
The fixing portion 63 penetrates the upper edge portion of the sheet body 51 in the thickness direction and fixes the first upper member 71 and the second upper member 72 in the vertical direction by welding.

  The upper edge member 53 configured as described above is fitted in the upper fitting recess 32 with the upper edge of the sheet main body 51 sandwiched therebetween and the sheet main body 51 being wound. Specifically, a portion of the seat main body 51 that is located on the inner peripheral side of the upper edge portion and is located in the upper fitting recess 32 (hereinafter referred to as an inner winding portion 76) is the second upper member 72. It is folded back 180 ° following the front end portion. That is, the inner winding portion 76 of the sheet main body 51 is bent 90 ° from the upper edge portion and extends downward, and is further bent 90 ° and extends rearward. In the present embodiment, as described above, the guide surface of the upper frame engaging portion 36 extends upward as it goes forward (inclined in the direction opposite to the opening direction of the first upper recess 32a). It is a surface. For this reason, interference between the portion of the inner winding portion 76 of the seat main body 51 that is positioned forward of the second upper member 72 and the upper frame engaging portion 36 is avoided, and the inner winding portion 76 of the seat main body 51 is prevented. Among these, the load applied to the portion located in front of the second upper member 72 can be reduced.

  Further, the sheet main body 51 is drawn out from the upper fitting recess 32 and then wraps around the front of the upper frame portion 22 along the outer peripheral surface of the upper frame portion 22. Specifically, a portion of the sheet main body 51 that is wound around the outer peripheral surface of the upper frame portion 22 (hereinafter referred to as an outer winding portion 77) is further folded back by 270 ° with respect to the inner winding portion 76. . That is, the outer winding portion 77 of the sheet main body 51 is bent 90 ° from the inner winding portion 76 and extends upward, and then is further bent 90 ° and extended forward, and then further bent 90 °. It extends downward. A portion of the outer winding portion 77 that extends upward is bridged on the rear surface of the upper frame portion 22 across the hinge portion 74 from below the second upper member 72. On the other hand, a portion of the outer winding portion 77 that extends downward extends along the front surface of the upper frame portion 22 and covers the above-described second upper concave portion 32b from the front.

As shown in FIG. 7, the lower edge member 54 is fitted into the lower fitting recess 33 described above from the front. In the following description, in the lower edge material 54, the same reference numerals are assigned to the components corresponding to the vertical edge material 52 described above, and the description thereof is omitted.
The lower edge member 54 includes a first lower member 81 disposed on the first surface side of the sheet body 51 (lower edge portion), a second lower member 82 disposed on the second surface side of the sheet body 51, and And a hinge portion 84 for connecting the lower members 81 and 82 to each other.

FIG. 11 is a bottom view of the lower edge member 54.
As shown in FIG. 11, the base portion 65 of the first lower member 81 is formed to have an outer shape in plan view seen from the up and down direction, following the lower frame portion 23.

The second lower member 82 is disposed below the first lower member 81 in the lower fitting recess 33. The second lower member 82 sandwiches the lower edge portion of the sheet main body 51 between the first lower member 81 in the vertical direction.
The hinge portion 84 connects the front end portions of the first lower member 81 and the second lower member 82 (the front end portions in the insertion direction to the lower fitting recess 33).
The fixing portion 63 penetrates the lower edge portion of the sheet main body 51 in the thickness direction and fixes the first lower member 81 and the second lower member 82 to each other in the vertical direction by welding.

  The hook portion 85 of the first lower member 81 is formed in a convex arch shape toward the rear in a plan view viewed from the up-down direction. The hook portion 85 connects the step portions 66 adjacent in the left-right direction. As shown in FIG. 7, the hook portion 85 is engaged with the above-described lower frame engaging portion 37 in the front-rear direction. The lower end portion of the hook portion 85 projects downward from the second lower member 82. In this case, the lower end part of the hook part 85 is accommodated in the part located below the narrow part 34b among the wide parts 34a mentioned above. The rear surface of the hook portion 85 is a guide surface that is inclined upward as it goes rearward. On the other hand, the front surface of the hook portion 67 is an engagement surface extending in a direction orthogonal to the front-rear direction. The engaging surface of the hook portion 85 is in close proximity to or in contact with the engaging surface of the lower frame engaging portion 37 from the inner side in the left-right direction.

12 is a cross-sectional view taken along line XII-XII in FIG.
As shown in FIG. 12, the lower edge material 54 configured in this manner is fitted into the lower fitting recess 33 with the lower edge of the sheet body 51 sandwiched and the sheet body 51 wound around. Yes. Specifically, a portion of the lower edge member 54 located in the narrow portion 34b of the first lower recess 33a is sandwiched in the vertical direction by the top surface and the bottom surface of the narrow portion 34b. On the other hand, as shown in FIG. 7, a portion of the lower edge member 54 that is located in the wide portion 34 a of the first lower recess 33 a extends vertically between the second lower member 82 and the bottom surface of the wide portion 34 a. There is a gap.

  As shown in FIGS. 7 and 12, a portion of the seat main body 51 that is located on the inner peripheral side of the lower edge portion and is located in the lower fitting recess 33 (hereinafter referred to as an inner winding portion 86). ) Is folded back 180 ° along the rear end of the second lower member 82. That is, the inner winding portion 86 of the sheet main body 51 is bent 90 ° from the lower edge portion and extends downward, and is further bent 90 ° and extends forward.

  Further, the sheet body 51 is drawn out from the lower fitting recess 33 and then wraps around the front of the lower frame portion 23 along the outer peripheral surface of the lower frame portion 23. Specifically, a portion of the sheet main body 51 that is wound around the outer peripheral surface of the lower frame portion 23 (hereinafter referred to as an outer winding portion 87) is further folded by 90 ° with respect to the inner winding portion 86. . That is, the outer winding part 87 of the sheet body 51 is bent 90 ° from the inner winding part 86 and extends upward. In this case, the outer winding portion 87 is bridged from the lower side of the second lower member 82 across the hinge portion 84 to the front surface of the lower frame portion 23.

  As a result, the tension member 12 is placed on the backrest frame 11 (between the frame portions 21 to 23) in a state where the seat body 51 closes the opening 20 of the backrest frame 11 from the front and a desired tension is applied. It is stretched.

[Manufacturing method of tension material]
Next, the manufacturing method of the tension material 12 mentioned above is demonstrated. Specifically, a method for fixing the sheet main body 51 and the edge members 52 to 54 will be described. In addition, the fixing method of each edge material 52-54 is the same method in all. Therefore, in the following description, a method of fixing the vertical edge member 52 and the side edge portion of the sheet main body 51 will be described, and description of other methods of fixing the edge members 53 and 54 and the edge portion of the sheet main body 51 will be omitted. To do.

13 to 15 are process diagrams for explaining a method of manufacturing the tension member 12, and are cross-sectional views corresponding to FIG.
First, as shown in FIG. 13, with the first vertical member 61 and the second vertical member 62 deployed, the vertical edge member 52 is set in the welder (edge material setting step). Note that the first vertical member 61 and the second vertical member 62 of the vertical edge member 52 are rotated via the hinge portion 64 in the direction of approaching and separating from each other in the thickness direction before being fixed to the sheet main body 51. It is configured to be possible.
Next, the side edge portion of the sheet main body 51 is set on the first vertical member 61 (sheet setting step). At this time, the side edge portion of the sheet main body 51 is set so that the sheet main body 51 is pulled out from the step portion 66 side of the first vertical member 61.

  Then, as shown in FIG. 14, the side edge part of the sheet | seat main body 51 is pinched | interposed between the 1st vertical member 61 and the 2nd vertical member 62 (holding process). Specifically, the second vertical member 62 is rotated around the hinge portion 64 with respect to the first vertical member 61. Accordingly, the first vertical member 61 and the second vertical member 62 are arranged to face each other with the side edge portion of the sheet main body 51 interposed therebetween. At this time, with the rotation of the second vertical member 62, the protrusion 68 formed on the second vertical member 62 penetrates the mesh portion of the sheet body 51 and hits the first vertical member 61. Thereafter, the sheet main body 51 and the vertical edge member 52 (the first vertical member 61 and the second vertical member 62) are sandwiched in the thickness direction using a clamp or the like (not shown). In addition, you may form the accommodation recessed part which accommodates the front-end | tip part of the projection part 68 in the part which the projection part 68 collides among the 1st vertical members 61. FIG.

  Subsequently, as shown in FIG. 15, the first vertical member 61 and the second vertical member 62 are welded together with the sheet main body 51 using the protrusions 68 (adhering step). The fixing process of this embodiment is performed by, for example, ultrasonic welding. Specifically, ultrasonic waves are applied to the protrusions 68 from the second vertical member 62 side while pressing the vertical edge member 52 and the sheet main body 51 in the thickness direction. Then, only the protrusion 68 interposed between the first vertical member 61 and the second vertical member 62 in the vertical edge member 52 is melted. The resin material that has been melted and liquefied spreads in the surface direction of the sheet main body 51 between the first vertical member 61 and the second vertical member 62 while passing through the mesh portion of the sheet main body 51. Then, the vertical edge material 52 is cooled and the molten resin material is solidified. Thus, the first vertical member 61 and the second vertical member 62 are fixed together with the sheet body 51 by the solidified resin material. That is, in the present embodiment, the protrusion 68 is melted and solidified to function as the fixing portion 63 that fixes the first vertical member 61 and the second vertical member 62 to each other. Thereby, the sheet body 51 is fixed to the vertical edge member 52.

Thereafter, the upper edge material 53 and the lower edge material 54 are respectively fixed to the upper edge portion and the lower edge portion of the sheet body 51 by the same method as described above.
Thereby, the upholstery material 12 mentioned above is completed.

[Assembly method of tension material]
Next, an assembling method for assembling the above-described tension member 12 to the backrest frame 11 will be described. Specifically, the operation when assembling the edge members 52 to 54 into the fitting recesses 31 to 33 will be described. In addition, as for the assembly | attachment method of each edge materials 52-54, all are the same methods. Therefore, in the following description, the case where the vertical edge member 52 is assembled in the vertical fitting recess 31 will be described, and the method of assembling the other edge members 53 and 54 in the fitting recesses 32 and 33 will be omitted.

First, the inner winding portion 69 of the sheet main body 51 is wound around the vertical edge member 52.
Thereafter, the vertical edge member 52 is pushed together with the inner winding portion 69 into the first vertical recess 31 a of the vertical fitting recess 31. At this time, the vertical edge member 52 is pushed into the first vertical concave portion 31a in a state where the hook portion 67 side of the vertical edge member 52 faces the first vertical concave portion 31a. Then, the vertical edge member 52 enters the first vertical recess 31a toward the inner side in the left-right direction.

  As the vertical edge member 52 enters the first vertical recess 31 a, the guide surface of the hook portion 67 in the vertical edge member 52 abuts on the guide surface of the vertical frame engaging portion 35 in the vertical fitting recess 31. In this state, when the vertical edge member 52 is further pushed inward in the left-right direction, the hook portion 67 is elastically deformed forward, so that the guide surface of the hook portion 67 moves on the guide surface of the vertical frame engaging portion 35. While sliding, the vertical edge member 52 enters the inner side in the left-right direction.

When the guide surface of the hook portion 67 gets over the guide surface of the vertical frame engaging portion 35, the hook portion 67 is restored and deformed. As a result, the engaging surface of the hook portion 67 approaches or contacts the engaging surface of the vertical frame engaging portion 35 from the inside in the left-right direction, and the hook portion 67 engages with the vertical frame engaging portion 35.
Note that the case where the upper edge member 53 is assembled to the upper fitting recess 32 and the case where the lower edge member 54 is assembled to the lower fitting recess 33 can also be assembled by the same method as described above.

Thus, in this embodiment, it was set as the structure by which the hook part 67 of the edge materials 52-54 is engaged with the engaging parts 35-37 within the fitting recessed parts 31-33.
According to this configuration, for example, the edge members 52 to 54 are fixed to the backrest frame 11 as compared with the conventional case where the edge members 52 to 54 are fixed to the fitting recesses 31 to 33 only by fitting (friction resistance). Can be firmly fixed. Thereby, the fixed intensity | strength of the edge materials 52-54 and the backrest frame 11 is ensured, and it can suppress that the edge materials 52-54 slip out from the fitting recessed parts 31-33. In this case, even if the edge members 52 to 54 are deformed by a load acting on the sheet main body 51, even if the frictional resistance between the edge members 52 to 54 and the fitting recesses 31 to 33 is reduced, the edge member It can suppress that 52-54 slips out from the fitting recessed parts 31-33. As a result, the fixing strength between the edge members 52 to 54 and the backrest frame 11 can be maintained over a long period of time.

In particular, in the present embodiment, among the engaging portions 35 to 37 formed at the boundary portions between the first concave portions 31a, 32a, 33a and the second concave portions 31b, 32b, 33b, the first concave portions 31a, 32a, The surface located on the opposite side of the opening side of 33a was exposed through the openings of the second recesses 31b, 32b, 33b.
According to this configuration, when the backrest frame 11 is formed by injection molding, the mold for molding the first recesses 31a, 32a, 33a and the mold for molding the second recesses 31b, 32b, 33b The engaging portions 35 to 37 can be formed in the defined portion. Thereby, since the engaging parts 35-37 can be easily formed in the fitting recessed parts 31-33, cost reduction and the improvement of manufacturing efficiency can be aimed at.

  In this embodiment, since the engaging parts 35-37 protrude in the direction which cross | intersects the extension direction of the 1st recessed parts 31a, 32a, 33a in the 1st recessed parts 31a, 32a, 33a, the engaging parts 35- 37 and the hook area 67 can be secured. Thereby, the edge members 52 to 54 can be firmly fixed to the backrest frame 11.

  In this embodiment, since the guide surface (inclined surface) is formed in the surface located in the opening part side of 1st recessed part 31a, 32a, 33a among the engaging parts 35-37, the edge materials 52-54. Is assembled into the fitting recesses 31 to 33, the hook portions 67 of the edge members 52 to 54 easily get over the engaging portions 35 to 37. Thereby, assembly property can be improved.

  In this embodiment, since the engagement surface (standing surface) is formed in the surface located on the opposite side to the opening part side of 1st recessed part 31a, 32a, 33a among the engagement parts 35-37, The edge members 52 to 54 can be firmly fixed by the backrest frame 11.

  In this embodiment, since the extending directions of the first upper concave portion 32a and the second upper concave portion 32b coincide with each other, when the backrest frame 11 is formed, the design surface (outer peripheral surface) is die-cut before and after. When performed, the first upper recess 32a and the second upper recess 32b can be formed simultaneously with the design surface. Thereby, further cost reduction and improvement of manufacturing efficiency can be aimed at.

  Furthermore, in this embodiment, since the extending directions of the first recesses 31a, 33a and the second recesses 31b, 33b intersect each other, a mold for molding the first recesses 31a, 33a and the second recess 31b , 33b and the molds for forming the engaging portions 35, 37 can be formed on the portions defined by the molds only by moving in the crossing direction. Thereby, further cost reduction and improvement of manufacturing efficiency can be aimed at. Moreover, in the fitting recessed parts 31 and 33, the mutual opening direction of the 1st recessed parts 31a and 33a and the 2nd recessed parts 31b and 33b can be varied. Therefore, for example, the design can be improved such that the opening of each recess can be set at a position where it is difficult to visually recognize the opening.

  And since the chair 1 of this embodiment is provided with the backrest 6 mentioned above, the chair 1 excellent in reliability and durability can be provided.

The technical scope of the present invention is not limited to the above-described embodiments, and includes those in which various modifications are made to the above-described embodiments without departing from the spirit of the present invention. In other words, the configuration described in the above-described embodiment is merely an example, and can be changed as appropriate.
For example, in the above-described embodiment, the case where the present invention is applied to the backrest 6 of the chair 1 has been described, but the present invention is not limited thereto. For example, the present invention may be applied to the seat body 4. Further, the furniture surface constituting member of the present invention can be applied to various furniture such as a panel for partitioning a space such as an office.
In the above-described embodiment, the configuration in which the tension member 12 is stretched between the frame portions 21 to 23 of the backrest frame 11 is described. However, the configuration is not limited thereto, and the tension member 12 is provided between at least two support portions. Any configuration can be used.

In the above-described embodiment, the configuration in which the protruding portion is penetrated in the thickness direction of the sheet main body 51 in the clamping step has been described, but the present invention is not limited thereto. It suffices that the fixing portion penetrates in the thickness direction of the sheet main body 51 at least during melting and solidification.
In the above-described embodiment, the configuration in which the first member and the second member are rotatably connected via the hinge portion has been described. However, if the first member and the second member are movable in the direction approaching and separating from the seat body 51, the first member The design of the connecting method of the second member can be changed as appropriate.

In the above-described embodiment, the configuration in which the first member and the second member are welded to each other by ultrasonic welding or heat welding has been described. However, the present invention is not limited to this, and various welding methods can be employed. Moreover, you may adhere not only welding but the 1st member and 2nd member using adhesion | attachment etc. FIG. Even in this case, the first member and the second member can be fixed together with the sheet main body 51 by performing the fixing step with the fixing portion interposed between the first member and the second member.
In the above-described embodiment, the configuration in which the edge members 52 to 54 are fitted into the fitting recesses 31 to 33 in a state where the sheet main body 51 is wound around the edge members 52 to 54 has been described. I can't.

If the engaging part of this embodiment is the structure which the surface located on the opposite side to the opening part side of a 1st recessed part is exposed through the opening part of a 2nd recessed part, the shape etc. can change a design suitably. .
For example, as shown in FIG. 16, a corner portion defined by the inner surface of the first recess 100 and the inner surface of the second recess 101 may be used as the engaging portion 102.
As shown in FIG. 17, when the engaging portion 102 protrudes into the first recessed portion 100, the opening area on the opening side of the second recessed portion 101 with respect to the proximal end portion of the engaging portion 102 is larger. As long as it is larger than the opening area on the bottom side, the inner surface shape of the second recess 101 may be formed in a stepped shape. In addition, as shown in FIG. 18, you may form the engaging surface of the engaging part 102 in an inclined surface.
Further, as shown in FIG. 19, when the engaging portion 102 protrudes into the second recess 101, the opening of the second recess 101 closer to the opening portion than the boundary portion between the guide surface and the engaging surface. If the area is larger than the opening area on the bottom side, the inner surface shape of the second recess 101 may be formed in a stepped shape.

In the above-described embodiment, the configuration in which the engaging portions 35 to 37 are fitted in the hook portions 67 of the edge members 52 to 54 has been described, but the configuration is not limited thereto. For example, the hook portion may be formed in a claw shape.
In the embodiment described above, the first vertical recess 31a is formed longer than the second vertical recess 31b in the vertical direction, and the second vertical recesses 31b formed at intervals in the vertical direction are respectively in the first recess 31a. Although the structure which communicates was demonstrated, it is not restricted to this. For example, the second vertical recess 31b may be longer than the first vertical recess 31a, and the first vertical recesses 31a formed at intervals in the vertical direction may communicate with the second recess 31b. Absent. In this case, an engaging part is formed in the part defined by the inner surface of each first vertical recess 31a and the inner surface of the second vertical recess 31b. The above-described configuration can also be applied to the upper fitting recess 32 and the lower fitting recess 33.

  In addition, in the range which does not deviate from the meaning of this invention, it is possible to replace suitably the component in the embodiment mentioned above by the known component, and you may combine each modification mentioned above suitably.

1 ... chair (furniture)
6 ... Backrest (Furniture component)
12 ... Upholstery (furniture sheet)
21 ... Vertical frame (support)
22 ... Upper frame part (support part)
23 ... Lower frame part (support part)
31 ... Vertical fitting recess (fitting recess)
31a ... 1st vertical recessed part 31b ... 2nd vertical recessed part 32 ... Upper fitting recessed part (fitting recessed part)
32a ... 1st upper recessed part 32b ... 2nd upper recessed part 33 ... Lower fitting recessed part (fitting recessed part)
33a ... 1st lower recessed part 33b ... 2nd lower recessed part 35 ... Vertical frame engaging part (engaging part)
36. Upper frame engaging portion (engaging portion)
37 ... Lower frame engaging part 51 ... Sheet main body 52 ... Vertical edge material (edge material)
53. Upper edge material (edge material)
54 ... Lower edge material (edge material)
67. Hook part (engaged part)
85 ... hook part (engaged part)

Claims (5)

At least two support portions that are spaced apart and each have a fitting recess that opens at the outer peripheral surface;
In the furniture surface component comprising the furniture sheet laid between the support parts,
The furniture sheet is:
The seat body,
An edge member provided at an edge of the sheet main body and fitted into the corresponding fitting recess, respectively,
The fitting recess is
A first recess extending in a first direction and having the edge member inserted therein;
The second end extends in the second direction intersecting the first direction, and the back end in the second direction is located on the back side in the second direction with respect to the first recess, and communicates with the first recess. 2 recesses,
An engagement portion formed at a boundary portion between the first recess and the second recess,
The engaging portion has a surface located on the side opposite to the opening side of the first recess defines a part of the inner surface of the second recess and is exposed through the opening of the second recess.
The said edge material is a surface component member for furniture provided with the to-be-engaged part engaged with the surface located on the opposite side to the opening part side of a said 1st recessed part among the said engaging parts.   The furniture component according to claim 1, wherein the engaging portion protrudes in a direction intersecting the first direction in the first recess.   The surface of the engagement portion located on the opening side of the first recess is formed as an inclined surface whose protruding height gradually increases toward the second recess in the first direction. Item 3. A furniture surface component according to Item 2.   The surface of the engaging portion that is located on the opposite side of the first recess from the opening portion is formed as an upstanding surface that extends in a direction intersecting the first direction. The surface component for furniture described in 1. The furniture provided with the surface component member for furniture of any one of Claims 1-4 .

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