JP2011045573A - Chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair capable of easily applying a desired tension to spread cloth by a simple spreading work. <P>SOLUTION: In the chair, flexible spread cloth M is spread to a frame to configure at least one of a seat and a backrest. The spread cloth M provided so as to cover the surface side of the frame includes a rigid pushing member 37 on its edge part Mc, and the edge part Mc is inverted and inserted into an attaching groove 35 provided on the outer side face of the frame F together with the pushing member 37. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a chair suitably used in an office or the like.

  2. Description of the Related Art Various types of chairs are conventionally known in which a stretch fabric is stretched between frames to form a seat or a backrest (see, for example, Patent Document 1).

  However, in the conventional case, the edge of the tension fabric is wrapped around the back surface so as to cover the front surface side of the frame, and the edge of the tension fabric that has been wrapped around is fixed to the frame using another fastening member. I try to wear it. For this reason, there is a problem that it is difficult to perform the tensioning work.

  That is, in the conventional case, when the tension fabric is stretched, first, the edge of the tension fabric is wound around the frame, and the tension member is applied with tension using the jig while applying the tension to the tension fabric by the jig. Must be fixed to the frame. For this reason, not only is the tensioning work of the tensioned land complicated, but it is also difficult to tension the tensioned area with a predetermined tension.

JP 11-290153 A

  The present invention is intended to solve the above-described problems, and an object of the present invention is to provide a chair that can give a desired tension to a tensioned fabric by a simple tensioning operation.

  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 configured such that at least one of a seat and a backrest is configured by stretching a flexible tension ground on the frame, and covers the surface side of the frame. The provided tension is provided with a rigid pushing material at the edge thereof, and the edge is inserted into the mounting groove provided on the outer surface of the frame together with the pushing material. It is characterized.

  Here, the front side means the upper surface in the case of a seat frame and the front side in the case of a back frame.

  In addition, the rigidity refers to a material in which the pushing material provided on the tension does not come out from the mounting groove provided on the frame when tension is applied to the tension. For example, when tension is applied to the tension and a force in the direction of rotation is applied to the push-in member due to this tension, the push-in is pushed in due to the difference in the thickness dimension of the mounting groove and the width of the push-in member. The engagement provided between the mounting groove and the push-in material is not limited to the one that prevents the material from slipping out of the mounting groove, and when a force is applied in the direction in which the push-out material comes out of the mounting groove due to tension. The pushing material may be prevented from slipping out of the mounting groove due to the engagement of the portions or the frictional force generated between the mounting groove and the pushing material.

  If it is such, a desired tension | tensile_strength can be given to a tension | tensile_strength by the simple tension | tensile_strength operation | work which pushes the pushing material provided in the tension | tensile_strength into the attachment groove | channel provided in the flame | frame.

  As a preferable aspect of the pushing material, the pushing material has a thickness dimension that can be inserted into the mounting groove and a width dimension larger than an opening dimension in the depth direction of the mounting groove. it can. If it is such, since a clearance gap will arise between a pushing material and the inner surface of a mounting groove, the operation | work which pushes a pushing material into a mounting groove can be performed easily.

  Here, since the thickness dimension of the pushing material is smaller than that of the mounting groove, when the tension is applied to the upholstery, the pushing material tries to rotate in the mounting groove. However, since the width dimension of the pushing material is set larger than the opening dimension in the depth direction of the mounting groove, the pushing material is prevented from rotating more than a certain amount in the mounting groove. Therefore, it is possible to prevent the pushing material from slipping out of the mounting groove. In other words, it is possible to realize a structure in which the tensioning ground and the push-in member are made relatively simple and the tension fabric is not detached from the frame.

  Further, if the mounting groove is formed at a position closer to the front surface than the back surface of the frame, a tension fabric can be stretched along the shape of the frame, and the frame has a curved shape In particular, wrinkles can be suppressed from occurring in the tension of the portion corresponding to the curved portion.

  In order to easily perform the work of attaching the tension fabric to the frame, it is preferable that the push-in member is provided continuously along the edge of the tension fabric. In such a case, when the pushing material is pushed into the mounting groove, the successive pushing materials are easily pushed into the fitting groove due to the rigidity of the pushing material.

  In order to easily attach the pushing material to the stretch fabric, it is preferable that the push material is attached to one surface side of the edge of the stretch fabric. The attachment may be, for example, attached to the tensioned fabric by sewing or attached by welding.

  In addition, as a preferable aspect of the tension fabric in the case where the frame is a pair of left and right frames constituting at least one of a seat and a backrest, the pushing material is provided on both left and right edges, and the other edges There are those in which a core material is provided in the part, and a flexible deformation part without a core material is formed between both ends of the core material and the push-in material. If it is such, the operation | work which reverses and inserts the edge part of a tension | tensile_strength into the attachment groove provided in the outer surface of the said frame with a pushing material can be performed without difficulty.

  Since this invention is the above structures, the chair which can give a desired tension | tensile_strength to a tension | tensile_strength ground by simple tension work can be provided.

1 is an overall perspective view showing an embodiment of the present invention. The perspective view which abbreviate | omits and shows the front side of the embodiment partially. The disassembled perspective view which abbreviate | omits and shows the front side of the embodiment partially. The perspective view which abbreviate | omits and shows the back side of the embodiment partially. The disassembled perspective view which abbreviate | omits and shows the back side of the embodiment partially. The front view which abbreviate | omits the half part and leg body of a tension fabric and shows the same embodiment. The top view which abbreviate | omits the half part and leg body of a tension fabric and shows the same embodiment. The right view which abbreviate | omits and shows the embodiment partially. AA line end view in FIG. The BB line end view in FIG. The rear view which showed the state before tensioning of the tension fabric of the embodiment. The CC line expanded end elevation figure in FIG. The DD line enlarged end elevation in FIG. The EE line enlarged end elevation in FIG. The plane expansion end view showing typically the frame concerning the modification of the present invention. The plane expansion end view which shows typically the frame and tension fabric concerning the other modification of this invention. The plane expansion end elevation which shows typically the frame and tension fabric concerning other modifications of the present invention.

  Hereinafter, an embodiment when the present invention is applied to an office rotary chair will be described with reference to FIGS.

  As shown in FIG. 1, the chair includes a leg 1, a support base 3 that is rotatably supported by the leg 1, and a seat 5 and a backrest 7 that are supported by the support base 3. It becomes.

  As shown in FIG. 1, the leg body 1 includes a leg blade type leg base 11 having casters 9 and leg struts 13 erected at the center of the leg base 11. The leg strut 13 is a normal one mainly composed of a gas spring, and the support base 3 is attached to the upper end of the leg strut 13.

  As shown in FIGS. 3 to 8, the support base 3 has a substantially triangular shape in plan view gradually narrowing toward the rear, and a bottom wall 3 a attached to the upper end of the leg support 13, The peripheral wall 3b is provided on the periphery of the bottom wall 3a, and the top wall 3c is attached to the upper end of the peripheral wall 3b. The support base 3 is provided with an operation lever 3d for controlling the gas spring of the leg 1.

  As shown in FIGS. 1, 3, and 6 to 8, the seat 5 includes a pair of left and right seat frames 15, and a flexible seat 17 that is stretched between the two seat frames 15. A front cross beam 21 is formed between the front end portions 15b of the both seat frames 15 while forming a space 19 between the seat stretch fabric 17 and applies tension to the seat stretch fabric 17 in the interposed state. It has.

  As shown in FIGS. 1, 3, and 6 to 8, the backrest 7 includes a back frame 23 that forms a pair of left and right, and a flexible back tension fabric 25 that is stretched between the back frames 23. And an upper horizontal beam 29 that is interposed between the upper portions 23a of the both back frames 23 while forming a space 27 between the upper and lower tension grounds 25 and applies tension to the back tension ground 25 in the interposed state. A lower horizontal beam 33 is provided between the lower portions 23b of the both back frames 23 while forming a space 31 with the back tension fabric 25, and applies tension to the back tension fabric 25 in the interposed state. It becomes.

  The seat frame 15 and the back frame 23 are continuous as shown in FIGS. 1 to 8 (the continuous seat frame 15 and the back frame 23 may be collectively referred to as “frame F”). The seat 5 and the backrest 7 are integrated. That is, the left seat frame 15 and the left back frame 23, and the right seat frame 15 and the right back frame 23 are integrally formed by integrally molding a single continuous metal material.

  As shown in FIGS. 8 to 10, mounting grooves 35 for attaching the seating ground 17 and the backrest 25 are formed on the outer side surfaces Fa of the left frame F and the right frame F, respectively. Yes. These mounting grooves 35 are arranged at positions closer to the front surface Fc than the back surface Fb of each frame F. Here, the back surface Fb means the bottom surface in the case of the seat frame 15 and the back surface in the case of the back frame 23. Further, the front surface Fc means the upper surface in the case of the seat frame 15 and the front surface in the case of the back frame 23.

  As shown in FIG. 1, FIG. 3, FIG. 6 to FIG. 8, and FIG. 11 to FIG. 13, the seat tension fabric 17 and the back fabric 25 (hereinafter may be collectively referred to as “stretch fabric M”). , Which is integrally formed by cutting a mesh-like upholstery material formed by weaving or knitting synthetic resin yarn into a predetermined shape, and existing from the front surface Ma side to the back surface Mb side as the seating surface It has translucency so that can be visually recognized.

  As shown in FIG. 11 and FIG. 13, the right and left edge portions Mc of the upholstery M are provided with a pushing member 37 having a band shape and having rigidity. The pushing member 37 is provided continuously along the edge Mc of the stretch fabric M, and is attached to one side of the edge Mc of the stretch fabric M, that is, the back surface Mb by sewing or the like. Yes. The pushing member 37 is made of synthetic resin or the like, has a thickness dimension T1 that can be inserted into the mounting groove 35, and has a width dimension W1 larger than the opening dimension in the depth direction of the mounting groove 35. I have it.

  Then, as shown in FIG. 13, each edge Mc of the tension fabric M is inverted and inserted into the attachment groove 35 provided on the outer surface Fa side of the frame F together with the pushing member 37, thereby M is stretched between the left and right frames F. In this state, a tension is applied to the tension fabric M by interposing the front horizontal beam 21, the upper horizontal beam 29, and the lower horizontal beam 33 between the left and right frames F. The tension fabric M to which tension is applied in this way is in a form along the shape of the left and right frames F. That is, the left and right back frames 23 have protrusions 23c protruding forward corresponding to the waist shape of the seated person in the vicinity of the lower ends, and the backrest 25 is tensioned by the lower horizontal beam 33. Thus, it is stretched so as to form a protruding shape corresponding to the protruding portion 23c.

  Further, the edge portions Md and Me not supported by the left and right frames F of the upholstery M are bag-shaped as shown in FIGS. 3, 11 and 12, and the edges Md and Me A transparent core member 39 is incorporated in the interior. Specifically, the edge Md of the upholstery M (sitting upholstery 17) located at the front edge of the seat 5 and the edge of the upholstery M (backing up ground 25) located at the upper edge of the backrest 7 A core material 39 is provided on each Me. Each of these core members 39 is formed by cutting a transparent sheet material into a strip having a predetermined length, and there is a core member 39 between both end portions 39a of each core member 39 and the pushing member 37. The flexible deformation part 41 which is not formed is formed.

  As shown in FIGS. 3 to 6, the front cross beam 21 has a U-shape when viewed from the front with a substantially flat flat portion 21a in the middle, and the inner side surfaces of the left and right seat frames 15 at the left and right end portions 21b. 15a is provided with a pair of mounting walls 45 in direct close contact with each other. Each of the mounting walls 45 is fixed to the corresponding seat frame 15 using a plurality of bolts 47 serving as fixing tools. Specifically, the mounting wall 45 is fixed to the seat frame 15 by fastening two bolts 47 penetrating the mounting wall 45 to nuts 49 embedded in the seat frame 15. In addition, the both end parts 21b of the front cross beam 21 are each provided with the exterior wall 51 which clamps the seat frame 15 in cooperation with each said attachment wall 45, respectively. The mounting wall 45 has a shape extending along the seat frame 15, and the fitting portion 53 constituted by the mounting wall 45 and the exterior wall 51 is long before and after extending along the seat frame 15. It has a form. Accordingly, the mounting wall 45 is set so that the longitudinal dimension L2 in the direction along the seat frame 15 is larger than the thickness dimension T2.

  As shown in FIGS. 2 to 7 and 10, the upper horizontal beam 29 is curved so that a central portion 29 a protrudes rearward, and the inner side surfaces of the left and right back frames 23 are formed on the left and right end portions 29 b. 23d is provided with a pair of mounting walls 55 that are in direct close contact with each other. Each of the mounting walls 55 is fixed to the corresponding back frame 23 by using a plurality of bolts 57 as fixing devices. Specifically, the mounting wall 55 is fixed to the back frame 23 by fastening two bolts 57 penetrating the mounting wall 55 to a nut 59 embedded in the back frame 23. Note that both end portions 29b of the upper horizontal beam 29 are respectively provided with exterior walls 61 that sandwich the back frame 23 in cooperation with the mounting walls 55. The mounting wall 55 has a shape extending along the back frame 23, and the fitting portion 63 formed by the mounting wall 55 and the exterior wall 61 is long vertically extending along the back frame 23. It has a form. Thus, the mounting wall 55 is set such that the longitudinal dimension L3 in the direction along the back frame 23 is larger than the thickness dimension T3.

  As shown in FIGS. 2 to 7 and 9, the lower horizontal beam 33 joins the vicinity of the protruding portion 23 c of the back frame 23 protruding forward corresponding to the waist shape of the seated person, The left and right central portions 33a are curved so as to protrude rearward, and the left and right end portions 33b are provided with mounting walls 65 that make pairs that are in direct contact with the inner side surfaces 23d of the left and right back frames 23, respectively. Yes. Each of the mounting walls 65 is fixed to the corresponding back frame 23 by using a plurality of bolts 67 as fixing tools. Specifically, the mounting wall 65 is fixed to the back frame 23 by fastening two bolts 67 penetrating through the mounting wall 65 to a nut 69 embedded in the back frame 23. In addition, both end portions 33b of the lower horizontal beam 33 are respectively provided with exterior walls 71 that sandwich the back frame 23 in cooperation with the mounting walls 65. The mounting wall 65 has a shape extending along the back frame 23, and the fitting portion 73 formed by the mounting wall 65 and the exterior wall 71 is long vertically extending along the back frame 23. It has a form. Thus, the mounting wall 65 is set such that the longitudinal dimension L4 in the direction along the back frame 23 is larger than the thickness dimension T4.

  As shown in FIGS. 2 and 8, the chair according to the present embodiment is configured such that the seat 5 and the backrest 7 are integrally formed, and the seat 5 and the backrest 7 are configured as the support base 3. Cantilevered by a front cross beam 21 provided integrally therewith. A load placing surface 75 is provided between the support base 3 and the seat 5, and the load B 1 can be inserted and removed freely between the load placing surface 75 and the back surface 5 a of the seat 5. A luggage storage space 77 is formed.

  As shown in FIGS. 2 and 3, the load placement surface 75 includes an extending portion 79 in which a part of the outer edge 75 a is positioned outside the outer edge 3 e of the support base 3 in a plan view. The extending portion 79 is provided with dust removing means 81. That is, the luggage placement surface 75 in this embodiment is formed by the upper surface 21 c of the flat portion 21 a of the front cross beam 21 and the upper surface 83 a of the shelf board 83 that is detachably mounted on the support base 3. In other words, the shelf board 83 is provided so as to cover the upper surface 3 f of the support base 3, and a main part of the luggage placement surface 75, that is, a part of the luggage placement surface 75 is provided on the shelf board 83. The part is formed.

  As shown in FIGS. 2 to 8, the shelf board 83 includes a shelf body 85 that forms a part of a luggage placement surface 75 for removably supporting the luggage B1 on the upper surface 83a thereof, and the shelf 83 And an outer fitting wall body 87 provided on the lower surface of the plate body 85 and detachably fitted to the support base 3.

  The shelf main body 85 is placed on the upper surface 3f of the support base 3 and has a larger area than the support base 3 in a plan view, and is located outside the support base 3. A plurality of through holes 82 constituting the dust removing means 81 are provided at the site. The shelf main body 85 has an area larger than the A4 size in plan view, and includes curved portions 85b for preventing the load B1 from falling on the left and right side edges 85a. The shelf body 85 is disposed with its center portion substantially coincident with the rotation center O of the support base 3 that is the axis of the leg support 13, and the load placement surface 75 is disposed on the support base 3. It is formed at a position including the rotation center O.

  The outer fitting wall body 87 includes a holding portion 87 a that overlaps the outer peripheral surface 3 g of the support base 3 and a retaining portion 87 b that overlaps the bottom surface peripheral portion 3 h of the support base 3. The front surface is opened so that it can be detached from the rear. The outer fitting wall body 87 includes a rib 87 c for connecting the outer surface of the holding portion 87 a to the lower surface of the shelf board main body 85.

  Moreover, the chair concerning this embodiment has the armrest 89, as shown in FIG. As shown in FIGS. 3 to 5, 8, and 14, the armrest 89 is integrally formed with the exterior wall 71 of the lower horizontal beam 33, and the outer surface 33 c of the lower horizontal beam 33 and the armrest The outer surface 89a of 89 is smoothly integrated. The armrest 89 is provided so as to extend forward from the backrest 7, and an armrest main body 91 supported by the backrest 7, and an armrest pad 93 provided on the armrest main body 91, It comprises.

  The armrest main body 91 includes an elbow post 95 provided integrally with the lower horizontal beam 33 and an elbow frame 97 provided at the tip of the elbow post 95, and the elbow pad 93 on the elbow frame 97. Wearing. Specifically, the elbow frame 97 has a hard lower frame portion 97b having a pair of front and rear attachment portions 97a on the upper surface thereof, and a hard frame having both front and rear ends attached to the attachment portion 97a of the lower frame portion 97b. The lower frame portion 97b and the upper frame portion 97c form a rigid loop shape. In other words, the window portion 99 is formed by the lower frame portion 97b and the upper frame portion 97c. A soft elbow pad 93 is provided on the upper frame portion 97c. A hook 101 is provided on the opening edge 99a of the window 99 for hanging a bag or other luggage B2 in a state of not protruding from the outer edge 93a of the elbow pad 93 in plan view. That is, the hook 101 is formed integrally with the window 99 of the elbow frame 97. In other words, the hook 101 is formed by deforming the lower side 99b of the opening edge 99a of the window 99.

  Moreover, the chair concerning this embodiment is provided with the hanger 103 for hanging clothing, as shown in FIG. 2 thru | or FIG. The hanger 103 is integrally provided in a suspended posture on the lower side 29c of the upper horizontal beam 29, and the hanger body 105 for hanging clothes and the hanger main body 105 between the upper horizontal beam 29 are provided. The suspension member 109 is suspended and supported on the upper horizontal beam 29 in a state where the gap 107 is maintained.

  As described above, the swivel chair according to the present embodiment is configured such that the seat 5 and the backrest 7 are configured by stretching the flexible fabric M on the frame F that forms a pair of left and right. The tension fabric M provided so as to cover the surface Fc side of the frame F is provided with a rigid pushing member 37 at both left and right side edges Mc, and the edge Mc together with the pushing material 37. Since it is inserted into the mounting groove 35 provided on the outer side face Fa of the frame F in an inverted manner, the pushing material 37 provided on the tension fabric M is simply pushed into the mounting groove 35 provided on the frame F. A desired tension can be applied to the tension fabric M by a simple tensioning operation. Further, since the pushing member 37 is inverted and inserted into the mounting groove 35 provided on the outer side face Fa of the frame F, the tension material M does not go around the outer side face Fa side of the frame F as in the prior art. Compared with the case where it attaches, the tension fabric M bends to the edge part of a seating surface, and it can be set as the thing which is comfortable.

  Further, since the pushing material 37 has a thickness dimension T1 that can be inserted into the mounting groove 35 and a width dimension W1 that is larger than the opening dimension in the depth direction of the mounting groove 35, the pushing material 37 and A gap is generated between the inner surface of the mounting groove 35 and the work of mounting the pushing member 37 to the mounting groove 35 can be easily performed.

  Here, since the thickness dimension T <b> 1 of the push-in member 37 is smaller than the attachment groove 35, the push-in member 37 tries to rotate in the attachment groove 35 when a tension is applied to the tension fabric M. However, since the width dimension W1 of the pushing member 37 is set larger than the opening dimension in the depth direction of the mounting groove 35, the pushing member 37 is prevented from rotating in the mounting groove 35 more than a certain amount. Therefore, it is possible to prevent the push-in member 37 from slipping out of the mounting groove 35. That is, it is possible to realize a structure in which the upholstery M does not come off the frame F while making the mounting groove 35 and the push-in member 37 relatively simple.

  Further, since the mounting groove 35 is formed at a position closer to the front surface Fc than the back surface Fb of the frame F, a tension fabric M can be stretched along the curved shape of the frame F, and the projecting portion It is possible to suppress wrinkles from occurring in the tensioned portion M of the portion corresponding to the curved portion, such as the boundary portion between the seat frame 15c and the back frame 23.

  The pushing member 37 is continuously provided along the right and left side edges Mc on the back surface Mb side of the stretched fabric M, and the mounting groove 35 is continuously provided on the outer surface Fa of the frame F. When the pushing member 37 is pushed into the mounting groove 35, the pushing member 37 is successively pushed into the fitting groove 35 due to the rigidity of the pushing member 37, and the work of attaching the tension fabric M to the frame F can be easily performed. it can.

  The push-in member 37 is attached to a mesh-like stretch fabric material formed by weaving or knitting synthetic resin yarns so as to correspond to the visual shape of the frame F forming the left and right pairs. The edge of the ground material is cut out along the push-in material 37 to form a substantially rectangular shape. Specifically, the pushing material 37 is attached to the surface of the upholstery M, which is the back surface Mb, by sewing, and then the upholstery material is cut along the outside of the pushing material 37, so that the desired shape is obtained. It becomes easy to cut out the fabric. Further, since the upholstery material is mesh-like, fraying of the left and right edges Mc of the upholstery M can be suppressed by attaching the pushing material 37 to the upholstery material before cutting the upholstery material. .

  In addition, since spaces 19 and 31 exist between the tension fabric M and the front lateral beam 21 and the upper lateral beam 29, respectively, the shape retention and strength are maintained at the front edge portion Md of the tension fabric M and the upper edge portion Me of the tension fabric M. However, by attaching the transparent core material 39 to those portions, the core material 39 is transparent while maintaining the shape retaining property and strength of the tension fabric M. It is possible to avoid losing the aesthetic appearance and the aesthetic appearance of the entire chair.

  Further, since the flexible deformation portion 41 where the core material 39 does not exist is formed between the both end portions 39 a of the core material 39 and the push material 37, the left and right side edges Mc of the stretch fabric M are pushed into the push material 37. At the same time, it is possible to perform the operation of inverting and inserting into the mounting groove 35 provided on the outer surface Fa of the frame F without difficulty.

  In addition, since the tension ground M is stretched between the left and right frames F, the tension ground M with the front lateral beam 21, the upper lateral beam 29, and the lower lateral beam 33 interposed between the left and right frames F. Since the tension is applied to the stretch fabric M, the stretch fabric M can be held in a shape corresponding to the left and right frames F, and a high tension can be applied to the stretch fabric M.

  Further, the front horizontal beam 21 is provided with a pair of mounting walls 45 that are in direct contact with the inner side surface 15a of the left and right seat frames 15 at the left and right end portions 21b. The upper horizontal beam 29 and the lower horizontal beam 33 are Since the left and right end portions 29b and 33b are respectively provided with mounting walls 55 and 65 which make a pair closely contacting the inner surface 23d of the left and right back frames 23, these mounting walls 45, 55 and 65 are attached to the left and right frames F, respectively. It can press to the outer surface Fa side and can give the tension | tensile_strength of the left-right direction to the said tension fabric M. Therefore, high tension can be applied to the upholstery M.

  The left and right armrests 89 are integrally formed with the lower horizontal beam 33 located on the back of the waist, and further vertically connected to the left and right back frames 23 so as to connect the left and right back frames 23 at the lower horizontal beam 33 portion. Since it is fixed with the longitudinal dimension L4 in the direction, the mounting strength is high, and it does not wobble even if a load is applied to the armrest 89 during use. In addition, regarding compatibility with chairs without armrests, it is easy to make different products because the lower cross beam 33 without armrests or with armrests is simply selected and installed as needed at the product assembly stage. is there.

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

  In the present embodiment, an example in which the mounting groove is integrally formed by cutting into the frame or the like is shown, but the mounting groove is formed between two same or different frames. Also good.

  For example, as schematically shown in FIG. 15, the front-side frame Fd and the rear-side frame Fe whose shapes are almost the same when viewed from the direction orthogonal to the seating surface or the back surface as the seating surface are not shown. The seat frame 15 or the back frame 23 is integrated by joining using a fastening tool such as the above. Of the frames F thus integrated, a step portion Ff is provided on the outer surface of the front surface side frame Fd and on the rear surface side frame Fe side, which is slightly lowered from the outer surface of the front surface side frame Fd. A space formed by the stepped portion Ff and the front surface side of the back surface side frame Fe by joining the side frame Fd and the back surface side frame Fe is used as an attachment groove 35. If it is such, even if the shape of the inside of the attachment groove 35 is complicated, the attachment groove 35 can be formed comparatively easily.

  In the present embodiment, the flat pushing member 37 is attached to the attachment groove 35 formed in the frame F. However, as shown in FIGS. 16 and 17, the pushing member is disposed on the inner surface side of the attachment groove 35. You may provide the retaining means for making it difficult to remove 37 from the attachment groove 35. FIG. Specifically, the retaining means includes an engaging portion 37 a provided on the pushing member 37 and an engaged portion 35 a formed on the inner surface of the mounting groove 35. The engaged portion 35a may be formed integrally with the frame F on the inner surface of the mounting groove 35, or may be formed by attaching a separate body to the inner surface of the mounting groove 35.

  For example, the retaining means shown in FIG. 16 has an engaged portion 35a formed integrally with the frame F. That is, as in the case of the chair according to the present embodiment, in the case of a single frame F on the left and right sides, a frame F having a wedge-shaped attachment groove 35 as shown in FIG. 16 by extrusion molding. Can be configured. At this time, it is preferable that the pushing member 37 has a wedge shape corresponding to the engaged portion 35 a of the mounting groove 35. If this is the case, the triangular catching portion of the soft resin push-in member 37, that is, the engaging portion 37a is pushed into the attachment groove 35 while being elastically deformed, whereby the edge of the tension M is inserted into the attachment groove 35. Can be attached.

  On the other hand, the retaining means shown in FIG. 17 is such that the engaged portion 36a is formed separately from the frame F. Specifically, the retaining portion 36a is engaged with the insertion member 36 attached to the inner surface of the mounting groove 35. A joint portion 36a is formed. That is, even when it is difficult to form the cross-sectional shape as shown in FIG. 16 in the frame F, for example, an insertion member 36 made of aluminum die casting is attached to the inner surface of the mounting groove 35 and the attachment is made. A wedge-shaped engaged portion 36a can be formed on the opposite side of the surface. At this time, it is preferable that the pushing member 35 has a wedge shape corresponding to the engaged portion 36 a of the insertion member 36. If it is such, by pushing into the mounting groove 35 while engaging the engaged portion 36a while elastically deforming the triangular hook portion of the push member 37 of soft resin, that is, the engaging portion 37a. The edge Mc of the upholstery M can be attached to the attachment groove 35.

  These structures shown in FIGS. 16 and 17 may be formed by two types of frames F. In particular, in the case of two types of frames F, the wedge-shaped engaged portions 35a and 36a can be easily formed as described above. Further, even with one type of frame F, the engaged portions 35a and 36a can be formed in the frame F by integral molding by extrusion molding or the like.

  In the present embodiment, the stretched fabric stretched between the left and right frames has been described, but various changes such as the shape of the stretched fabric or the attachment position of the push-in member can be made. For example, the frame is not limited to a pair of left and right frames, and may be composed of a frame in the vertical direction, a frame in the vertical direction and the horizontal direction, and further arranged so that the frame surrounds the tension fabric. It may be of a rectangular shape or a U-shaped frame shape. Moreover, the seat and the back are not only integrally formed, but the seat and the back are separate, and the seat and the back are separately disposed. Also good.

  Further, the method of attaching the push-in material to the tension fabric is not limited to sewing, but can be variously changed by welding. In addition, the pushing material is not limited to the one continuously provided along the edge of the upholstery, but in such a case, once the pushing material starts to be pushed into the mounting groove, the pushing material is pushed. Due to the rigidity of the material, it becomes easy to push the continuous pushing material into the mounting groove, so that the work of attaching the tension fabric to the frame can be easily performed.

  Moreover, although this embodiment demonstrated the rotation chair for office work, it is not restricted to this, It can apply also to chairs other than a rotation chair.

  In addition, various changes may be made without departing from the spirit of the present invention.

F ... Frame Fa ... Outer surface (frame)
Fb ... Back side (frame)
Fc ... surface (frame)
M ... Zhangji Mc ... Edge (left and right of Zhangji)
Md ... Edge (front edge)
Me ... Edge (upper edge)
5 ... Seat 7 ... Backrest 35 ... Mounting groove 37 ... Pushing material T1 ... Thickness dimension (Pushing material)
W1 ... Width dimension (indented material)
39 ... Core material 39a ... End (core material)
41 ... Flexible deformation part

Claims (6)

A chair in which a flexible tension fabric is stretched on a frame to constitute at least one of a seat and a backrest,
The tension material provided so as to cover the surface side of the frame is provided with a rigid pushing material at its edge, and the edge is attached to the mounting groove provided on the outer surface of the frame together with the pushing material. A chair characterized by being inverted and inserted.   The chair according to claim 1, wherein the push member has a thickness dimension that can be inserted into the mounting groove and a width dimension that is larger than an opening dimension in a depth direction of the mounting groove.   The chair according to claim 1 or 2, wherein the mounting groove is formed at a position closer to the front surface than the back surface of the frame.   The chair according to claim 1, 2, or 3, wherein the push-in member is provided continuously along an edge of the stretched fabric.   The chair according to claim 1, 2, 3, or 4, wherein the push-in member is attached to one surface side of the edge portion of the tension fabric.   The frame is a pair of left and right frames that constitute at least one of a seat and a backrest, and the upholstery includes the push-in material on both left and right edges and a core material on the other edge. The chair according to claim 1, 2, 3, 4, or 5, wherein a flexible deformation portion without a core material is formed between both end portions of the core material and the push-in material.

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