JP2015093028A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair capable of reconciling mitigation of restriction on design with facilitation of manufacture or assembly.SOLUTION: A chair includes: a back as a component constituted of a back frame; and a mesh fabric as an upholstery material provided thereon. The back frame includes a frame body and a groove formation member 36 which is a different body from the frame body, and the back frame has a fitting groove G formed approximately over the whole circumference. A part of the fitting groove G is constituted between the frame body and the groove formation member 36, and the mesh fabric is structured mountably on the back frame since a marginal part thereof is inserted into the fitting groove G.

Description

  The present invention relates to a chair provided with constituent elements configured by attaching a tension member to a frame.

  2. Description of the Related Art Conventionally, a chair is known in which components such as a back, a seat, and a headrest constituting a chair are configured by attaching a tension material such as a mesh ground to a frame. As such a chair, there exists a thing of the following patent document 1, for example. In this structure, a back frame and a seat frame are integrally formed, and a seating surface is formed by attaching a tension member to openings formed in these.

  Thus, the chair provided with the component which combined the upholstery material with the frame body is lighter and has higher air permeability than a chair of a type using a cushion inside the back and the seat (see Patent Document 2). In addition, it is possible to have an excellent design that can give a light and sophisticated impression of the frame and the frame.

JP 2007-260118 A JP 2010-158437 A

  However, as described above, in a chair constituted by attaching a tension member to a frame body as a main component, there is a problem of how to attach the tension material to the frame body. Is configured such that a tension member is fitted into an opening formed in the frame body via a frame member. The attachment of the tension member using such a frame material is disadvantageous in terms of production cost because it takes time and effort to attach the frame material, and requires a frame material having almost the same size as the opening provided in the frame body. become. In addition, depending on the design of the chair, it may be difficult to manufacture the frame body by molding using a resin material or a metal material, and it may not be possible to employ the tension member mounting structure described above.

  The object of the present invention is to effectively solve such problems. Specifically, it is possible to achieve both relaxation of design restrictions and ease of manufacturing and assembly of parts by molding. The purpose is to provide a chair.

  In order to achieve this object, the present invention takes the following measures.

  That is, the chair of the present invention is a chair provided with a component composed of a frame and a tension member provided on the frame, and the frame is a groove-forming member that is separate from the frame main body and the frame main body. And the frame body has a mounting groove formed over substantially the entire circumference, and at least a part of the mounting groove is formed between the frame body and the groove forming member, and the frame has an edge. The tension member is configured to be attached to the frame body by inserting a portion.

  If comprised in this way, it will become possible to attach a tension material simply by inserting an edge into the attachment groove provided over substantially the perimeter of the frame. In addition, by forming this mounting groove not only by the frame main body but also by a groove forming member, even if it is a unique shape such as forming a part of the frame main body at a position overlapping the mounting groove, It is possible to appropriately form the attachment groove and attach the tension member. Furthermore, since the attachment groove can be easily formed, the frame body can be easily manufactured by molding, and the manufacturing cost can be reduced.

  In addition, in order to obtain a better appearance without exposing the groove forming member, the groove forming member is attached to the frame so that the groove forming member has the frame main body and the tension material. It is preferable to be configured to be covered with.

  Even when the frame has a more complicated shape, in order to enable easy attachment of the tension member, the groove forming member is attached in advance to at least a part of the edge of the tension member, It is suitable to be configured to be attached to the frame main body together with the tension material.

  As a specific application form that can reduce the manufacturing cost or relax the restriction on the design by making use of the above configuration, a support rod for mounting and supporting the component includes at least the mounting groove. Some of them are arranged at a position intersecting with a surface extending partly in the opening direction and formed integrally as a part of the frame body.

  And in order to facilitate the easy attachment and weight reduction of the groove forming member, an internal space capable of accommodating the groove forming member is formed on the inner peripheral side of the support rod in the frame body. It is preferable to configure.

  Further, in order to enable easy and appropriate attachment of the tension member to the frame body, a reinforcing band formed in a band shape is provided at an edge portion of the tension member, and together with the reinforcement band, the It is preferable that the edge of the tension member is configured to be inserted into the mounting groove.

  Specifically, the above-described components can be applied to at least one of a back, a seat, and a headrest.

  According to the present invention described above, it is possible to provide an inexpensive chair excellent in design by facilitating the manufacture and assembly of parts by molding while relaxing design constraints.

The perspective view which shows the chair which concerns on one Embodiment of this invention. The side view of the chair. The front view in the state which removed the mesh ground from the chair. The enlarged end elevation which cut | disconnected the vertical shaft of the chair in the AA position of FIG. The expanded end elevation which cut | disconnected the upper frame part of the chair in the BB position of FIG. The expansion perspective view which shows the principal part of the back frame of the chair. The expansion perspective view which shows the lower frame part periphery of the back frame which comprises the chair. The expansion perspective view which shows the state which removed the groove formation member from the state of FIG. The enlarged end elevation which cut and showed the lower frame part of the chair in CC position of Drawing 7 typically. The schematic diagram which decomposes | disassembles and shows the mesh ground and reinforcement band which comprise the chair. The modification which comprised the seat and the headrest with the frame and the mesh ground.

  Embodiments of the present invention will be described below with reference to the drawings.

  In the chair of this embodiment, as shown in FIG. 1, a seat 2 is arranged above a leg 1 and a back 3 is erected on the back of the seat 2, and the seat 2 and the back 3 are placed by the leg 1. It is configured as a swivel chair supported rotatably.

  Here, in the embodiment of the present application, when the direction is indicated, the terms “vertical direction”, “front / rear direction”, and “left / right direction” are used, which are the same as the general direction when the chair is raised as shown in FIG. , A vertical direction (Z direction in the figure), a direction substantially perpendicular to the spine 3 (X direction in the figure), a vertical direction and a direction perpendicular to the front-rear direction (Y direction in the figure).

  The structure of the chair will be described in detail. The leg 1 is configured such that the leg strut 12 is rotatably supported at the center of five leg blades 11 to 11 that extend radially and have casters 11a at the tips. As shown in FIG. 2, a support base 13 serving as a basis for supporting the back 3 and the seat 2 is provided at the upper end 12 a of the leg column 12. A gas spring (not shown) is incorporated in the leg column 12, and the upper end 12 a of the leg column 12 can be moved up and down together with the support base 13 by operating this.

  The support base portion 13 is formed of a rigid body such as an aluminum die cast, extends slightly forward and forward from the leg column 12, and the tip 13 a supports the front portion 21 a of the seat 21. A seat surface 22 including a cushion is provided in the upper portion of the seat receiver 21, and the seat 2 is configured by these.

  Further, the support base 13 rotatably supports a back support rod 14 formed of a metal frame at the left and right positions of the leg support 12, and the back support rod 14 extends rearward and upward. A back frame 31 as a frame is provided at the tip 14a. Further, the rear portion 21b of the seat receiver 21 is rotatably supported at a position midway from the position where the back support rod 14 is supported by the support base 13 toward the tip 14a. Therefore, the back frame 31 and the seat receiver 21 operate in conjunction with the support base 13 while a part of the rotation fulcrum slides, so that a so-called synchro-rocking operation is possible.

  A gas spring type reaction force mechanism 14 s (see FIG. 7) is provided inside the back support rod 14 so as to generate a reaction force against the rearward tilt of the back frame 31. Similarly, a reaction force mechanism (not shown) is also provided inside the support base 13 so as to generate a reaction force against the movement of the seat receiver 21. A resin cover 15 is divided into a plurality of parts around the back support rod 14 and is configured to cover the back support rod 14 together with the reaction force mechanism 14s described above.

  As will be described later, the back frame 31 is provided with a mounting groove G that is open on the outer peripheral side in order to attach a mesh ground 38 that is a tension material. 38 can be attached by inserting an edge 38a (see FIG. 10), and the spine 3 is configured together with the mesh ground 38.

  As shown in FIG. 2, the back frame 31 is inclined slightly rearward as a whole, and is reduced in size in the front-rear direction while being curved upward from below. The back frame 31 is provided with a lumbar support 6 as an optional member as shown in FIG. The lumbar support 6 is disposed on the back surface of the mesh ground 38, and can support the waist through the mesh ground 38 when a seated person leans against the back 3.

  FIG. 3 shows a state in which the mesh ground 38 and the lumbar support 6 are removed from the chair and viewed from the front. The back frame 31 is configured by a frame main body 32 and a groove forming member 36 that forms the above-described mounting groove G (see FIG. 2) in cooperation with the frame main body 32 by attaching to the frame main body 32.

  The frame body 32 is composed of a pair of vertical rods 33, 33 extending in the vertical direction, and a pair of horizontal rods 34, 35 that connect the upper and lower portions to each other. Is formed with a substantially rectangular opening OP. The frame body 32 is molded by resin integral molding using a mold, but can be molded using a metal material such as aluminum.

  The vertical rods 33, 33 arranged on the left and right have a symmetrical shape, but the horizontal rods 34, 35 arranged on the upper and lower sides have completely different functions because they have different functions. Therefore, in the following, the upper reed is referred to as the upper frame portion 34, and the lower recumbent is referred to as the lower frame portion 35.

  When viewed from the front, the vertical rods 33 and 33 are arranged with the interval slightly narrowed upward. Therefore, the spine 3 is configured to become slightly smaller upward. The upper frame portion 34 connected to these is formed to be slightly curved so that the center is convex upward, and the connection portion with the vertical rods 33 and 33 is formed by a smooth arc. The lower frame portion 35 is also formed so as to be connected to the vertical rods 33 and 33 by a smooth curve, and is configured such that the center dimension is about twice as large as the center in both the left and right direction ends. (Refer to FIG. 7), and the back support rod 14 described above is connected to the center portion.

  As shown in FIG. 2, the vertical rod 33 is provided with a curved portion and an inclined portion in a side view from the bottom to the top. Specifically, immediately above the connecting portion with the lower frame portion 15, a first region R1 that is a curved portion in which the front surface 33a that is a support surface is curved so as to be convex forward, and above the first region R1 The second region R2 that is curved in the direction opposite to the first region R1 so that the front surface 33a is concave toward the front, and the third region that is set above and tilts the front surface 33a toward the rear It is a shape based on an ergonomic viewpoint provided with R3. As shown in the figure, the human spine line LB draws a gentle S-curve, so that the vertical rod 33 also draws a substantially similar curve in a side view. That is, the first region R1 is a waist region that is set at the height position of the waist when a person with a standard figure is seated, and the second region R2 is when the person with the standard figure is seated. The lumbar region and the back region have a shape that substantially matches the curvature of the seated person's spine in a side view. Further, the third region R3 is a shoulder region that is provided at the height position of a standard human body's shoulder and is shaped to separate the back frame 31 from the shoulder of the seated person. The aforementioned lumbar support 6 (see FIG. 1) is provided in the first region R1.

  By attaching the mesh ground 38 to such a vertical rod 33, the mesh ground 38 can be shaped along the front surface 33 a of the vertical rod 33. That is, a waist region (first region R1), a back region (second region R2), and a shoulder region (third region) can be formed on the entire support surface of the seated person on the back 3. Therefore, based on an ergonomic point of view, the waist and back can be supported along the curvature of the human spine, and the body can be held in an appropriate posture with little fatigue even when sitting for a long time. Also, in the shoulder area, based on ergonomics, it is possible to secure a space around the shoulder to make it easier to move the arm and improve work efficiency, and as a support area for relaxing when the upper body is warped It can be used. Since the shoulder region is formed so as to be separated from the shoulder, it does not necessarily have to be provided at the same height as the shoulder as long as it is above the back region, and is slightly lower than the shoulder. Even when formed, the above-described effects can be obtained.

  Here, the AA position in FIG. 3, that is, the end face shape when the vertical hook 33 is cut in the second region R2, is shown in FIG. As shown in this figure, the vertical rod 33 is formed as a plane portion in which the front surface 33a serving as a support surface of the mesh ground 38 is substantially orthogonal to the front-rear direction, and is generally orthogonal to the front surface 33a, that is, It has a shape extending toward the rear. Furthermore, the outer side surface 33b continuing to the outer side of the front surface 33a is formed so as to be inclined inward as it goes rearward. On the inner side of the front surface 33a, a relief surface 33c that inclines inward as it goes rearward is formed, and an inner side surface 33d that inclines toward the outside as it goes rearward is formed continuously with the escape surface 33c. A rear surface 33e is formed between the inner surface 33d and the outer surface 33b. Further, most of the front surface 33a, the outer surface 33b, the clearance surface 33c, the inner surface 33d and the rear surface 33e are connected to each other by smooth curved surfaces. A region formed by adding the flank 33c to the curved surface connecting the front surface 33a and the flank 33c is a flank region Rc that is set inside the front surface 33a and gradually moves away from the mesh ground 38 toward the inside.

  A mounting groove 33g is formed at a position in the vicinity of the front surface 33a in the outer side surface 33b so as to be substantially parallel to the front surface 33a, that is, with the outer peripheral side as an opening direction, and an edge 38a (see FIG. 10) is formed in the mounting groove 33g. When the mesh ground 38 is inserted and attached, the mesh ground 38 is stretched inward from the outer surface 33b via the front surface 33a. Therefore, the front surface 33a functions as a support surface that regulates the position of the mesh ground 38 and contributes to the formation of the overall shape. In addition, since the relief region Rc is formed inside the front surface 33a that is the support surface, the mesh ground 38 hardly affects the cross-sectional area of the entire vertical rod 33, that is, does not cause a decrease in strength. The support area is reduced to make it easier to bend. Furthermore, although the flank 33c is separated from the mesh base 38 in a normal state, when the mesh base 38 is deformed by leaning on a person, it is possible to increase the stability by contacting the mesh base 38. It has become.

  The front surface 33a is designed to have a certain area or more, so that when the seated person shifts his / her posture from side to side, he / she does not bite into his / her back to cause discomfort or discomfort. Further, a relief surface 33c is formed on the inner side of the front surface 33a so as not to form an acute corner, thereby relieving contact with the body. The upper frame portion 34 has a shape that is recessed like a wing cross section toward the rear from the front surface and the flank 33c that can come into contact with the body of the seated person. Furthermore, the rear surface 33e is formed to be sufficiently smaller than the front surface 33a, so that the shape feature is more prominent. In addition, when a simpler shape is assumed in which the inner surface 33c and the front surface 33a are extended without forming the flank 33c, it can also be said that the sectional view is substantially triangular. The vertical rod 33 has such a cross-sectional shape so that the front-rear dimension L2 is larger than the left-right dimension L1 (in the present embodiment, approximately twice). From the viewpoint of the amount of material used, strength, and design, the front-rear dimension L2 is preferably 1.5 times to 3 times the left-right dimension L1. Because of the dimensional relationship as described above, there are few visible portions of the vertical hook 33 through the mesh ground 38 in the front view, and a more refined impression can be given. In addition, since the load on the vertical rod 33 mainly acts as a result of the seat occupant leaning backward, it is possible to ensure the strength against the load on the rear by increasing the front-rear dimension L2. It has become.

  In other words, the vertical rod 33 has a reverse triangle shape with respect to the front and rear dimensions of the front half portion in which the front surface 33a and the flank surface 33c functioning as pressure-receiving surfaces and the groove 33g functioning as a tension member attachment location are formed. The thickness of the latter half of the shape is almost the same or greater.

  The vertical rod 33 has substantially the same shape along the vertical direction including not only the second region R2 but also the first region R1. That is, since the dimension in the front-rear direction (front-rear dimension L2) is smaller than the dimension in the left-right direction (left-right dimension L1), the first region R1, second region R2, It is possible to appropriately form the three regions R3.

  As described above, the front-rear dimension L2 becomes smaller (in the present embodiment, about 1/2) as it goes upward, but the left-right dimension L1 is hardly changed (see FIG. 3). The ratio of the upper front-rear dimension to the lower front-rear dimension L2 is preferably about 30 to 60%. Due to the dimensional relationship as described above, it appears that the size of the vertical hook 33 hardly changes between the upper part and the lower part in a front view, and a stable impression can be given (see FIG. 2). In addition, the bending moment due to the backward load caused by the seated person leaning on is larger toward the lower side of the vertical rod 33 and smaller toward the upper side. Therefore, as described above, the longitudinal dimension L2 is decreased toward the upper side. However, there is no shortage of strength, and it is possible to produce a refined impression that the upper part is thinner in a side view, and it is also possible to reduce the manufacturing cost by reducing the material.

  Next, the shape of the upper frame portion 34 will be described. FIG. 5 shows a cross-sectional shape when the upper frame portion 34 is cut at the BB position in FIG.

  As shown in this figure, the upper frame portion 34 is formed as a flat portion with the front surface 34a extending obliquely upward, and an upper surface 34b that is inclined downward toward the rear continuously above the front surface 34a is formed. Has been. In addition, a relief surface 34c that slopes downward as it goes rearward downward from the front surface is formed, and a lower surface 34d that slopes upward as it goes rearward is formed continuously from the relief surface 34c. ing. Adjacent ones of the front surface 34a, the upper surface 34b, the flank surface 34c, and the lower surface 34d are connected by a smooth curved surface. Similar to the vertical rod 33 (see FIG. 4) described above, a region obtained by adding the flank 34c to the curved surface connecting the front surface 34a and the flank 34c is set on the inner side of the front surface 34a and gradually meshes toward the inner side. This is an escape region Rc that is spaced apart from 38.

  Of the curved surface connecting the front surface 34a and the flank 34c, the most forwardly protruding portion constitutes the leading edge Ef along the extending direction of the upper frame portion 34, and is a curved surface connecting the upper surface 34b and the lower surface 34d. Of these, the rearmost protruding portion constitutes the rear edge Er along the extending direction of the upper frame portion 34.

  A mounting groove 34g is formed in the upper surface 34b at a position forward from the center position in the front-rear direction, specifically, at a position near the front surface 34a, substantially parallel to the front surface 34a, that is, with the outer peripheral side as the opening direction. If the mesh ground 38 is attached by inserting the edge 38a (see FIG. 10) into the mounting groove 34g, the mesh ground 38 extends from the upper surface 34b along the front surface 34a, and the shape of the upper portion of the vertical rod 33 Will be arranged diagonally downward.

  Like the front surface 33a of the vertical rod 33, the front surface 34a functions as a support surface that supports the mesh ground 38. Since the escape region Rc is formed inside the front surface 34a that is the support surface, the upper frame The support area of the mesh ground 38 is reduced without substantially affecting the cross-sectional area of the entire portion 34, that is, without causing a decrease in strength, so that bending is easily caused. Furthermore, the front surface 34a has a certain area or more, and when the seated person makes his / her body bow, the upper frame portion 34 bites into the back. It does not cause discomfort or discomfort. In addition, a relief surface 34c is formed below the front surface 34a so as not to form an acute corner, thereby softening contact with the body. And the upper frame part 34 is made into the shape which became constricted like the wing | blade cross section toward the back from the front surface 34a and flank 34c which can contact a seated person's body. In addition, when the simple shape which does not provide the flank 34c is assumed, it can be said that it is formed in the cross-sectional view substantially triangular shape which goes to the rear edge Er from the front surface 34a. By doing so, the front-rear dimension L4 is made larger than the vertical dimension L3 (in the present embodiment, approximately 1.7 times). From the viewpoint of the amount of material used, strength, and design, the front-rear dimension L4 is preferably 1.4 times to 2.5 times the left-right dimension L3. Because of the above dimensional relationship, it is possible to give a more refined impression with fewer visible parts of the upper frame part 34 through the mesh ground 38 in the front view as with the vertical gutter 33. It is possible to ensure the strength against the backward load that mainly acts.

  In other words, like the vertical rod 33, the upper frame portion 34 also has a front-rear dimension and a front-rear dimension in which a front surface 34a and a flank surface 34c that function as pressure-receiving surfaces and a groove 34g that functions as a tension member attachment location are formed. The thickness of the latter half of the inverted triangular shape is almost the same or larger.

  The upper frame portion 34 and the vertical rod 33 are smoothly continuous as shown in FIG. 6, and the mounting grooves 34g and 33g provided in each are also formed to be continuous. Therefore, the mesh ground 38 is stretched while forming a smooth surface between the upper frame portion 34 and the vertical rod 33.

  Next, the shape of the lower frame part 35 will be described. Since the lower frame portion 35 is connected to the back support rod 14 as described above, the lower frame portion 35 is configured to be larger than the other vertical rod 33 or the like as shown in FIG. The back support rod 14 is screwed to the lower surface of the lower frame portion 35, and the reaction force mechanism 14s described above is provided therein.

  The lower frame portion 35 is connected to the upper plate portion 35a extending in the left-right direction and constituting a part of the peripheral edge of the above-described opening, and the lower frame 35 is connected to the center of the rear portion of the upper plate portion 35a. It is comprised by the board part 35b and the side board parts 35c and 35c connected to the lower board part 35b and the upper board part 35a from the right and left vertical rods 33 and 33, and is mutually connected by the smooth curved surface. As a result, the lower frame part 35 forms a concave internal space S that is opened forward and the opening forms a substantially inverted trapezoid. The internal space S also functions as a meat stealer in molding, contributing to the reduction of materials and weight reduction. Further, the lower plate portion 35b is set to have a larger size in the front-rear direction than the upper plate portion 35a in order to ensure a wide mounting space for the back support rod 14 that supports the entire back 3. The lower plate portion 35b also functions as a support rod continuous with the back support rod 14, and is formed integrally with the frame main body 32, so that the number of parts can be reduced and an overall sense of unity can be obtained. An appearance can be obtained. If this is not a problem, the lower plate portion 35b and the side plate portions 35c and 35c can be configured separately from the frame main body 32. The lower frame portion 35 as a whole has a shape that is longer in the front-rear direction than the vertical frame 33 and the upper frame portion 34, and gives a more unified and refined excellent design. ing.

  However, unlike the vertical rod 33 and the upper frame portion 34, the mesh ground 38 interferes with the back support rod 14 even if the mounting groove G having the outer peripheral side as the opening direction is formed in the lower plate portion 35 b and the side plate portion 35 c. For this reason, it becomes impossible to perform installation. For this reason, a mounting groove 35g having an outer peripheral side in the open direction is formed below the upper plate portion 35a in the lower frame portion 35, and is configured to be continuous with the mounting grooves 33g and 34g of the vertical rod 33 and the upper frame portion 34. Can be considered. However, since the lower frame portion 35 is formed with the internal space S opened forward as described above, when the lower frame portion 35 is molded using a mold, the mold The pulling direction is set to the front-rear direction. Therefore, the mounting groove G is formed on the upper plate part 35a whose lower part is covered by the lower plate part 35b, that is, at the position overlapped by the lower plate part 35b when viewed from the outer peripheral side, even if a slide mold is used. It is difficult to do. With regard to the above points, when focusing on the positional relationship with the attachment groove G as the center, the attachment groove 35g formed in the lower frame portion 35 for attaching the mesh ground 38 intersects the surface extending in the opening direction (outer peripheral direction). It can be considered that the lower plate portion 35b having another structure is integrally provided at the position where the operation is performed.

  Therefore, in the present embodiment, as shown in FIG. 8, the mounting groove 35 g (see FIG. 9) is formed by mounting the groove forming member 36 along the upper plate portion 35 a in the internal space S of the lower frame portion 35. It is possible to do. Since the internal space S is largely open to the groove forming member 36, it is possible to easily perform the attaching operation. The groove forming member 36 is a flat plate member along the upper plate portion 35a, and the through holes 36a are formed at five positions spaced apart in the left-right direction. And the back frame 31 which is a frame body is comprised with the frame main body 32 by screwing using this through-hole 36a and the screw hole 35d1 formed in the lower frame part 35. As shown in FIG.

  Specifically, as shown in FIG. 9, the upper plate portion 35a is provided with a step portion 35d formed by being recessed backward, and the screw hole 35d1 described above is formed in the step portion 35d. A recess 35e formed by further recessing is provided below the step 35d. Then, by attaching the groove forming member 36 to the stepped portion 35d, it is possible to form the attachment groove 35g between the concave portion 35e and the groove forming member 36.

  The mounting groove 35g is formed over substantially the entire circumference of the back frame 31 provided with the opening OP together with the mounting grooves 33g and 34g formed in the vertical rod 33 and the upper frame portion 34, for attaching the mesh ground 38. A substantially continuous mounting groove G is formed. As shown in FIG. 7, the mounting groove 33 g formed in the vertical rod 33 is interrupted at a position close to the lower frame portion 35, and the mounting groove 35 g formed by the lower frame portion 35 and the groove forming member 36 is Not continuous. However, since the end portions of both the mounting grooves 33g and 35g are formed in a continuous positional relationship when they are extended to each other, it can be considered that they are substantially continuous. Of course, by changing the shape of each member, the mounting groove G can be configured to be completely continuous.

  When the mesh ground 38 is attached, the groove forming member 36 is covered with the lower frame portion 35 and the mesh ground 38, so that the groove forming member 36 hardly stands out and the back frame 31 is connected to the frame main body 32. Even if divided into the groove forming member 36, the design is not impaired. Further, the mesh ground 38 is attached to the lower frame portion 35 constituting the back frame 31, thereby covering the entire opening OP formed in the back frame 31, creating a sense of unity of the entire back 3, and the back 3 Since it is arranged below the seat 2 in the front view (see FIG. 3), it is possible to have a more luxurious design.

  Here, as shown in FIG. 10, the mesh ground 38 is cut into a back shape and a band-shaped reinforcing band 39 is attached to the edge 38a inserted into the mounting groove G (see FIG. 2) by sewing. Therefore, the mesh ground 38 is configured so that the edge 38a is inserted into the mounting groove G together with the reinforcing band 39, so that the mesh 38 can be held in a firmly inserted position and the form can be stabilized. The portions corresponding to the vertical rods 33 and 33 and the upper frame portion 34 are attached by sewing three-dimensionally while bending one reinforcing band 39, and only another reinforcing band only on the portion corresponding to the lower frame portion 35. 39 is attached. Between the two reinforcing bands 39, 39 is a portion located between the mounting groove 33 g formed in the vertical rod 33 and the groove 35 g provided in the lower frame portion 35, and a simple recess 38 b to which the reinforcing band 39 is not attached. Only fraying processing of the mesh ground 38 is performed.

  In this way, the mesh ground 38 is inserted into the attachment groove G formed over substantially the entire circumference of the back frame 31 so as to be stretched along the shape of the back frame 31 to constitute the back 3. Yes. Since the mounting groove G is formed with the outer peripheral side open at each position, the edge 38a of the mesh base 38 can be easily inserted, and the mounting work can be easily performed. Further, since the mesh ground 38 extends in a direction approximately 180 ° opposite to the mounting groove G, the direction in which the tension acts and the opening direction of the mounting groove G are almost opposite to each other, and do not come off easily. .

  Moreover, the front surface of the back 3 can be made into an appropriate shape by attaching the mesh ground 38 to the attachment groove G of the back frame 31. Specifically, as described above with reference to FIG. 2, the vertical rod 33 has a first region R <b> 1, a second region R <b> 2, and a third region R <b> 3 formed from below in a side view. The mesh ground 38 is stretched while generating undulations and a flat surface, and the entire back 3 can be easily maintained in this shape. Therefore, despite the relatively simple structure in which the mesh ground 38 is attached to the back frame 31, the shape of the back 3 can be made comfortable and suitable for the body of the seated person.

  As described above, the chair according to the present embodiment is a chair provided with the back 3 as a component composed of the back frame 31 that is a frame body and the mesh ground 38 as a tension material provided on the back frame 31. The frame 31 includes a frame main body 32 and a groove forming member 36 that is a separate body from the frame main body 32. The back frame 31 is formed over the entire circumference of the mounting groove G, and a part of the mounting groove G is It is configured between the frame main body 32 and the groove forming member 36, and the mesh ground 38 is configured to be attached to the back frame 31 by inserting the edge 38 a into the attachment groove G.

  Since it comprises in this way, the mesh ground 38 can be easily attached only by inserting the edge part 38a in the attachment groove | channel G formed in the back frame 31 over the perimeter. In addition, since the mounting groove G is formed not only by the frame main body 32 but also by the groove forming member 36, a position where the lower plate portion 35 b of the lower frame portion 35 which is a part of the frame main body 32 overlaps the mounting groove G. Even if it is a case where it makes it peculiar shape, such as forming in, it is possible to form attachment groove G appropriately and to attach mesh ground 38. Furthermore, since the attachment groove G can be easily formed, the frame main body 32 can be easily manufactured by molding, and the manufacturing cost can be reduced.

  Since the groove forming member 36 is configured to be covered with the back frame 31 and the mesh ground 38 by attaching the mesh ground 38 to the back frame 31, the groove forming member 36 is attached by attaching the mesh ground 38. Since it can be prevented from being exposed, a more excellent appearance can be obtained.

  In addition, the lower plate portion 35b of the lower frame portion 35 that functions as a support rod for attaching and supporting the spine 3 is disposed at a position intersecting with a surface extending a part of the attachment groove G in the opening direction, Since it is integrally formed as a part of the frame main body 32, it is possible to provide a chair that can reduce the number of parts and reduce the cost, and can obtain a good appearance with a sense of unity as a whole. It has become.

  Further, since the inner space S that can accommodate the groove forming member 36 is formed on the inner peripheral side of the lower plate portion 35b in the frame main body 32, the groove forming member 36 is easily attached. It is possible to reduce the weight by stealing the internal space S, and to efficiently form the frame body 32 and the support rod integrally.

  In addition, a reinforcing band 39 formed in a band shape is provided on the edge 38a of the mesh ground 38, and the edge 38a of the mesh ground 38 is configured to be inserted into the mounting groove G together with the reinforcing 39 band. Therefore, the mesh ground 38 can be easily and appropriately attached to the back frame 31.

  The specific configuration of each unit is not limited to the above-described embodiment.

  For example, in the above-described embodiment, the mesh ground 38 is used as the tension material. However, as long as it has elasticity that can be stretched on the frame body, the woven fabric, the nonwoven fabric, the film, and the like are not limited thereto. The sheet-like material can be used effectively.

  In the above-described embodiment, only a part of the attachment groove 35g of the attachment groove G to which the mesh ground 38 is attached is formed between the frame main body 32 and the groove formation member 36. However, the groove formation member is large. As a thing, it is also possible to comprise so that all the attachment grooves G may be formed between the frame main bodies 32. The mounting groove G may have a direction other than the outer peripheral side as the opening direction.

  Furthermore, in the above-described embodiment, the groove forming member 36 is attached to the frame main body 32 to form the attachment groove 35g, and then the edge 38a of the mesh ground 38 is inserted to be stretched. The forming member 36 may be configured to be attached to the back frame 31 together with the mesh base 38 in a state in which the forming member 36 is attached in advance to a part of the edge 38 a of the mesh base 38, which makes the back frame 31 complicated. Even in the case of a simple shape, the mesh ground 38 can be easily attached.

  In addition, instead of the configuration in which the mounting groove 35g is formed between the frame main body 32 and the groove forming member 36, a configuration in which a part of the mounting groove G is directly formed in the groove forming member 36 and attached to the frame main body 32. It is also possible to make it.

  Further, in the above-described embodiment, the back 3 that is one of the components of the chair is configured by the back frame 31 that is a frame and the mesh ground 38, but the other components are similarly configured and the same. It is also possible to obtain the effect. FIG. 11A shows a seat 110 constituted by a seat frame 111 and a mesh ground 38 as a component constituting the chair. However, the seat 110 is supported by itself or other components such as the back 3. The support rod 111a for supporting the ridge is extended, and the support rod 111a is provided at a position where it overlaps with the mounting groove G when viewed from the outer periphery side, that is, at a position intersecting the surface extending the mounting groove G in the opening direction. In the case of a simple shape, by providing the groove forming member 112 inside the support rod 111a, the mounting groove G that opens to the outer peripheral side is formed over substantially the entire circumference, and by attaching the mesh ground 38, the manufacturing by molding A simple mounting structure can be achieved at the same time.

  Similarly, in the case of the headrest 120 shown in FIG. 11B, the frame body 121 is provided at a position where the support rods 121a to 121c are partially projected and overlapped with the mounting groove G when viewed from the outer peripheral side. Even in the case of a unique shape, by providing the groove forming members 122 to 124 at this position, it is possible to form the mounting groove G that opens to the outer peripheral side over substantially the entire circumference, and the same by attaching the mesh ground 38 Can be configured.

  Other configurations can be variously modified without departing from the spirit of the present invention.

3 ... back 31 ... back frame (frame)
32 ... Frame body 33 ... Vertical rod 34 ... Upper frame (horizontal rod)
35 ... Lower frame (Yokohama)
35a ... Upper plate portion 35b ... Lower plate portion 35g ... Mounting groove 36 ... Groove forming member 38 ... Mesh (tension material)
38a ... Edge 39 ... Reinforcement band 110 ... Seat 111 ... Seat frame (frame body)
112 ... Groove forming member
111a ... support rod 120 ... headrest 121 ... frame G ... mounting groove

Claims (7)

A chair provided with components composed of a frame and a tension member provided on the frame,
The frame body includes a groove forming member that is a separate body from the frame body and the frame body,
The frame body is formed over the entire circumference of the mounting groove, at least a part of the mounting groove is configured between the frame body and the groove forming member,
The chair is configured so that the upholstery is attached to the frame body by inserting an edge into the attachment groove.   The chair according to claim 1, wherein the groove forming member is covered with the frame body and the tension member by attaching the tension member to the frame body.   The said groove | channel formation member is comprised so that it may be attached to the said frame main body with a tension | tensile_strength in the state already attached to the edge part of at least one part of the tension | tensile_strength. Chair.   A support rod for mounting and supporting the component is disposed at a position intersecting with a surface extending at least a part of the mounting groove in the opening direction, and is integrally formed as a part of the frame body. The chair according to any one of claims 1 to 3, wherein the chair is provided.   The chair according to claim 4, wherein an inner space capable of accommodating the groove forming member is formed on an inner peripheral side of the support rod in the frame main body.   A reinforcing band formed in a strip shape is provided at an edge of the tension member, and the edge of the tension member is inserted into the attachment groove together with the reinforcement band. Item 6. The chair according to any one of Items 1 to 5.   The chair according to claim 1, wherein the component is at least one of a back, a seat, and a headrest.

Images