JP2016077809A

JP2016077809A - Chair

Info

Publication number: JP2016077809A
Application number: JP2014215543A
Authority: JP
Inventors: 裕一郎 ▲高▼木; Yuichiro Takagi; アレキザンダーハーフォード; Alexander Harford
Original assignee: Okamura Corp
Current assignee: Okamura Corp
Priority date: 2014-10-22
Filing date: 2014-10-22
Publication date: 2016-05-16
Anticipated expiration: 2034-10-22
Also published as: JP6410558B2

Abstract

PROBLEM TO BE SOLVED: To provide a chair capable of preventing demolition of a seat by a seating person, and in which appearance is not deteriorated.SOLUTION: A chair 1 comprises a seat 4, and a support structure 3 for supporting the seat 4. The chair further comprises: a first fastening member for fastening the seat 4 and the support structure 3; and a second fastening member 62 for fastening the seat 4 and the support structure 3 on a front part relative to the first fastening member. The seat 4 comprises: an outer cover 20 on which an opening part 20a1 into which the second fastening member 62 is inserted, is formed; a core member 30 which is fastened with the support structure 3 via the outer cover 20, by the second fastening member 62 inserted into the opening part 20a1; and an inner shell 40 for sandwiching the core member 30 between it and the outer cover 20, and covering the second fastening member 62.SELECTED DRAWING: Figure 10

Description

本発明は、椅子に関するものである。 The present invention relates to a chair.

上記技術分野に関する椅子として、例えば下記特許文献１に記載された椅子が知られている。
特許文献１に記載された椅子は、座と、座を支持する枠装置（支持構造体）と、を備えている。座は、アウターカバー（下層部材）と、アウターカバーに支持されるインナーシェル（上層部材）と、アウターカバーとインナーシェルとの間に配設される金属製芯部材（芯部材）と、を組み合わせて成る。 As a chair related to the above technical field, for example, a chair described in Patent Document 1 is known.
The chair described in Patent Document 1 includes a seat and a frame device (support structure) that supports the seat. The seat combines an outer cover (lower layer member), an inner shell (upper layer member) supported by the outer cover, and a metal core member (core member) disposed between the outer cover and the inner shell. It consists of

この座は、クッションを張ったインナーシェルを、アウターカバーにビス止めされた金属製芯部材に係合させることによって形成されている。この構成によれば、金属製芯部材に強度部材としての機能を持たせることができるため、インナーシェルやアウターカバーの弾性化、軽量化が可能になる点で優れる。 This seat is formed by engaging an inner shell with a cushion attached to a metal core member screwed to the outer cover. According to this configuration, the metal core member can have a function as a strength member, which is excellent in that the inner shell and the outer cover can be made elastic and lightweight.

特開２００９−１０６４２２号公報JP 2009-106422 A

特許文献１に記載された椅子は、支軸を中心として座が回動可能な構成となっている。ところで、この跳ね上げ式の椅子を、座が回動不能である固定式の椅子にする場合、座と、座を下方を支持するサポート体（座受部）とをボルト等で締結することが考えられる。
しかしながら、ボルトを下方から挿入し、サポート体を挿通させ、座に螺合させると、ボルトの頭部が座の下方に露呈する。また、このボルトは、座の回動を不能とするために回動軸から離れた座の前方に配置されているため、着座者が手を回せば容易にアクセスでき、ボルトが外される虞がある。また、ボルトが螺合可能な強度を確保するために、座の下層を形成するアウターカバーを厚くすると、座が全体的に厚みのある外観を呈し、外観上も好ましくない。 The chair described in Patent Document 1 is configured such that the seat can be rotated around a support shaft. By the way, when this flip-up chair is a fixed chair in which the seat cannot be rotated, the seat and a support body (seat receiving portion) that supports the seat below may be fastened with a bolt or the like. Conceivable.
However, when the bolt is inserted from below, the support body is inserted and screwed into the seat, the head of the bolt is exposed below the seat. In addition, since this bolt is disposed in front of the seat away from the pivot shaft in order to make the seat impossible to rotate, it can be easily accessed if the seated person turns his hand and the bolt may be removed. There is. Further, if the outer cover forming the lower layer of the seat is made thick in order to ensure the strength with which the bolt can be screwed, the seat has an overall thick appearance, which is not preferable in terms of appearance.

本発明は、上記問題点に鑑みてなされたものであり、着座者による座の解体を防止でき且つ外観に悪影響を与えることのない椅子の提供を目的とする。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a chair that can prevent the seat from being disassembled and does not adversely affect the appearance.

この発明に係る椅子では、上記の課題を解決するために以下の構成を採用した。
この発明に係る椅子は、座と、前記座を支持する支持構造体と、を備える椅子であって、前記座と前記支持構造体とを締結する第１の締結部材と、前記第１の締結部材よりも前方で、前記座と前記支持構造体とを締結する第２の締結部材と、を有しており、前記座は、前記第２の締結部材が挿通される開口部が形成された下層部材と、前記開口部を挿通する前記第２の締結部材によって、前記下層部材を介して前記支持構造体と締結される芯部材と、前記芯部材を前記下層部材との間で挟み込み、前記第２の締結部材を覆う上層部材と、を有する、ことを特徴とするものである。
この構成によれば、第１の締結部材と第２の締結部材によって前後に離間して座と支持構造体とを締結するため、座の支持が安定する。この構成において、第２の締結部材は、座の下層部材に形成された開口部を挿通して、芯部材と支持構造体とを締結するため、下層部材の機能は単なるカバー機能にとどめることができ、強度の小さな厚みのない部材として運用できる。このため、座の下層部材を厚くすることなく、また、強度は芯部材に持たせて、座を過度に厚くすることなく強度を大きくできるため、外観に影響を与えることはない。また、第２の締結部材は、第１の締結部材よりも比較的着座者の手が届き易い座の前方に配設されるが、下層部材との間で芯部材を挟み込む上層部材によって覆われているため、着座者は上層部材を取り外すこと無しに、第２の締結部材の締結解除を行うことができなくなる。このため、着座者による不測の座の解体を防止できる。 The chair according to the present invention employs the following configuration in order to solve the above problems.
A chair according to the present invention is a chair comprising a seat and a support structure that supports the seat, the first fastening member that fastens the seat and the support structure, and the first fastening And a second fastening member that fastens the seat and the support structure in front of the member, and the seat has an opening through which the second fastening member is inserted. A core member fastened to the support structure via the lower layer member by the lower layer member and the second fastening member inserted through the opening, and the core member is sandwiched between the lower layer member, And an upper layer member covering the second fastening member.
According to this configuration, since the seat and the support structure are fastened apart by the first fastening member and the second fastening member, the seat support is stabilized. In this configuration, since the second fastening member is inserted through the opening formed in the lower layer member of the seat and fastens the core member and the support structure, the function of the lower layer member can be merely a cover function. Can be operated as a member having a small strength and no thickness. For this reason, the strength can be increased without increasing the thickness of the lower layer member of the seat and without increasing the thickness of the seat by giving the core member the strength, so that the appearance is not affected. Further, the second fastening member is disposed in front of the seat that is more easily reachable by the seated person than the first fastening member, but is covered by the upper layer member that sandwiches the core member with the lower layer member. Therefore, the seated person cannot release the fastening of the second fastening member without removing the upper layer member. For this reason, it is possible to prevent the seated person from unexpectedly dismantling the seat.

また、この発明に係る椅子において、前記芯部材は、前記第１の締結部材によって、前記支持構造体に対し幅方向に延びる軸回りに回動可能に締結される、ことを特徴とするものである。
この構成によれば、芯部材の後方が第１の締結部材によって支持構造体に対し幅方向に延びる軸回りに回動可能に締結されるため、芯部材の後方を締結した後、芯部材の前方を倒すように回動させることで、芯部材を支持構造体上に位置させることができ、組み立てが容易となる。 In the chair according to the present invention, the core member is fastened by the first fastening member so as to be rotatable about an axis extending in the width direction with respect to the support structure. is there.
According to this configuration, the back of the core member is fastened by the first fastening member so as to be rotatable about the axis extending in the width direction with respect to the support structure. The core member can be positioned on the support structure by rotating so as to tilt the front side, and assembly is facilitated.

また、この発明に係る椅子において、前記支持構造体は、前記座の下方を支持する座受部を有し、前記第２の締結部材は、前記芯部材と前記座受部とを締結する、ことを特徴とするものである。
この構成によれば、芯部材の前方が第２の締結部材によって座の下方を支持する強度部材である座受部と締結されるため、座の支持が安定する。 Moreover, the chair which concerns on this invention WHEREIN: The said support structure has a seat receiving part which supports the downward direction of the said seat, and the said 2nd fastening member fastens the said core member and the said seat receiving part, It is characterized by this.
According to this configuration, the front of the core member is fastened to the seat receiving portion that is a strength member that supports the lower portion of the seat by the second fastening member, so that the seat support is stable.

また、この発明に係る椅子において、前記下層部材は、前記座受部と係合する係合溝を有し、前記係合溝には、前記開口部が形成されている、ことを特徴とするものである。
この構成によれば、下層部材が座受部が係合する係合溝を有しているため、支持構造体に対する位置決めが行い易くなる。 Further, in the chair according to the present invention, the lower layer member has an engagement groove that engages with the seat receiving portion, and the opening is formed in the engagement groove. Is.
According to this configuration, since the lower layer member has the engagement groove with which the seat receiving portion is engaged, positioning with respect to the support structure is facilitated.

また、この発明に係る椅子において、前記下層部材は、前記芯部材が嵌合する嵌合部を有する、ことを特徴とするものである。
この構成によれば、下層部材の嵌合部に芯部材を嵌合し、下層部材と嵌合した状態で芯部材を支持構造体に締結するため、下層部材と芯部材とを位置合わせする必要がなく、組み立てが容易となる。 Moreover, the chair which concerns on this invention WHEREIN: The said lower layer member has a fitting part which the said core member fits, It is characterized by the above-mentioned.
According to this configuration, the core member is fitted to the fitting portion of the lower layer member, and the core member is fastened to the support structure in a state of being fitted to the lower layer member. Therefore, it is necessary to align the lower layer member and the core member. It is easy to assemble.

この発明によれば、着座者による座の解体を防止でき且つ外観に悪影響を与えることのない椅子が得られる。 According to the present invention, it is possible to obtain a chair that can prevent the seat from being disassembled and does not adversely affect the appearance.

本発明の実施形態における椅子１の正面図である。It is a front view of the chair 1 in embodiment of this invention. 本発明の実施形態における椅子１を右側面後方側から視た斜視図である。It is the perspective view which looked at the chair 1 in embodiment of this invention from the right side rear side. 本発明の実施形態における座４の分解斜視図である。It is a disassembled perspective view of the seat 4 in embodiment of this invention. 本発明の実施形態における座４の平面図である。It is a top view of the seat 4 in embodiment of this invention. 本発明の実施形態における座４の右側面図である。It is a right view of the seat 4 in embodiment of this invention. 図４の矢視Ａ−Ａ断面図である。It is arrow AA sectional drawing of FIG. 図４の矢視Ｂ−Ｂ断面図である。It is arrow BB sectional drawing of FIG. 図４の矢視Ｃ−Ｃ断面図である。FIG. 5 is a cross-sectional view taken along the line CC in FIG. 4. 本発明の実施形態におけるアウターカバー２０の斜視図である。It is a perspective view of the outer cover 20 in the embodiment of the present invention. 図１の矢視Ｄ−Ｄ断面図である。It is arrow DD sectional drawing of FIG. 図７の領域Ｋの拡大図である。It is an enlarged view of the area | region K of FIG. 本発明の実施形態におけるインナーシェル４０の底面側斜視図である。It is a bottom side perspective view of the inner shell 40 in the embodiment of the present invention. 本発明の実施形態におけるインナーシェル４０の底面図である。It is a bottom view of the inner shell 40 in the embodiment of the present invention. 本発明の実施形態におけるインナーシェル４０の右側面図である。It is a right view of the inner shell 40 in the embodiment of the present invention.

以下、この発明の実施形態を図面に基づいて説明する。なお、以下の説明においては、椅子に正規姿勢で着座した人の正面が向く図中矢印ＦＲの指す向きを「前」と呼び、それと逆側の向きを「後」と呼ぶことがある。また、「上」，「下」と「左」，「右」については、椅子に正規姿勢で着座した人の上方の図中矢印ＵＰの指す向きを「上」、それと逆側の向きを「下」と呼び、椅子に正規姿勢で着座した人の左側の図中矢印ＬＨの指す向きを「左」、それと逆側の向きを「右」と呼ぶことがある。 Embodiments of the present invention will be described below with reference to the drawings. In the following description, the direction indicated by the arrow FR in the figure facing the front of the person seated in the chair in a regular posture may be referred to as “front”, and the opposite direction may be referred to as “rear”. For “upper”, “lower”, “left”, and “right”, the direction indicated by the arrow UP in the figure above the person sitting on the chair in a regular posture is “up” and the opposite direction is “ The direction indicated by the arrow LH on the left side of the person sitting on the chair in a normal posture is sometimes referred to as “left”, and the direction opposite to that is referred to as “right”.

図１は、本発明の実施形態における椅子１の正面図である。図２は、本発明の実施形態における椅子１を右側面後方側から視た斜視図である。
図１及び図２に示すように、本実施形態の椅子１は、フロア上に載置される脚部２と、脚部２の上端に設置される支持構造体３と、支持構造体３に支持されて着座者が着座する座４と、を有する。 FIG. 1 is a front view of a chair 1 according to an embodiment of the present invention. Drawing 2 is a perspective view which looked at chair 1 in an embodiment of the present invention from the right side rear side.
As shown in FIGS. 1 and 2, the chair 1 of the present embodiment includes a leg 2 placed on the floor, a support structure 3 installed on the upper end of the leg 2, and a support structure 3. And a seat 4 on which a seated person is seated.

脚部２は、キャスタ５ａ付きの多岐脚５と、多岐脚５の中央部より起立し昇降機構であるガススプリングを内蔵する脚柱６と、を有し、脚柱６の上端部に支持構造体３が取り付けられている。
支持構造体３は、図２に示すように、脚柱６の昇降調整機構を内蔵するボックス状の支基７と、座４に着座した着座者の背中を支持する背凭れ８と、を有する。支基７には、昇降調整機構を操作する操作レバー９が右側方に突出して設けられている（図１参照）。 The leg 2 includes a multi-leg 5 with casters 5 a and a leg 6 that stands up from the center of the multi-leg 5 and incorporates a gas spring as an elevating mechanism, and has a support structure at the upper end of the leg 6. The body 3 is attached.
As shown in FIG. 2, the support structure 3 includes a box-shaped support base 7 that incorporates an elevation adjustment mechanism for the pedestal 6, and a backrest 8 that supports the back of the seated person seated on the seat 4. . The support base 7 is provided with an operation lever 9 for operating the lifting adjustment mechanism so as to protrude rightward (see FIG. 1).

また、支基７には、図２に示すように、座４及び背凭れ８を支持する金属製のフレーム１０が設けられている。フレーム１０は、中空のパイプ状に形成され、支基７に左右一対で設けられると共に支基７に対して前後に延在している。支基７に対して前方に延在したフレーム１０には、座受部１１が設けられている。座受部１１は、左右方向（幅方向）に延在し、左右のフレーム１０を接続すると共に、座４の下方を支持する構成となっている。 Further, as shown in FIG. 2, the support base 7 is provided with a metal frame 10 that supports the seat 4 and the backrest 8. The frame 10 is formed in a hollow pipe shape, is provided on the support base 7 as a pair on the left and right sides, and extends forward and backward with respect to the support base 7. A seat 10 is provided on the frame 10 that extends forward with respect to the support base 7. The seat receiving portion 11 extends in the left-right direction (width direction) and connects the left and right frames 10 and supports the lower portion of the seat 4.

一方、支基７に対して後方に延在したフレーム１０は、図２に示すように、略Ｌ字に屈曲し、その上端部に背凭れ８が装着される。背凭れ８は、左右のフレーム１０を接続すると共に、左右のフレーム１０間に後方に凸となる湾曲形状の受面１２を形成する。また、支基７に対して後方に延在したフレーム１０には、座支持部１３が設けられている。座支持部１３は、左右のフレーム１０のそれぞれに設けられ、座４の側方を左右方向に延びる軸回りに回転自在に支持する構成となっている。 On the other hand, as shown in FIG. 2, the frame 10 extending rearward with respect to the support base 7 is bent into a substantially L shape, and a backrest 8 is attached to the upper end portion thereof. The backrest 8 connects the left and right frames 10 and forms a curved receiving surface 12 that protrudes backward between the left and right frames 10. A seat support portion 13 is provided on the frame 10 extending rearward with respect to the support base 7. The seat support portion 13 is provided in each of the left and right frames 10 and is configured to support the side of the seat 4 so as to be rotatable about an axis extending in the left-right direction.

図３は、本発明の実施形態における座４の分解斜視図である。図４は、本発明の実施形態における座４の平面図である。図５は、本発明の実施形態における座４の右側面図である。図６は、図４の矢視Ａ−Ａ断面図である。図７は、図４の矢視Ｂ−Ｂ断面図である。図８は、図４の矢視Ｃ−Ｃ断面図である。
本実施形態の座４は、図３に示すように、アウターカバー２０（下層部材）と、芯部材３０と、インナーシェル４０（上層部材）と、外装部材５０と、を有する。 FIG. 3 is an exploded perspective view of the seat 4 in the embodiment of the present invention. FIG. 4 is a plan view of the seat 4 in the embodiment of the present invention. FIG. 5 is a right side view of the seat 4 in the embodiment of the present invention. 6 is a cross-sectional view taken along line AA in FIG. 7 is a cross-sectional view taken along the line BB in FIG. 8 is a cross-sectional view taken along the line CC in FIG.
As shown in FIG. 3, the seat 4 of the present embodiment includes an outer cover 20 (lower layer member), a core member 30, an inner shell 40 (upper layer member), and an exterior member 50.

アウターカバー２０は、支持構造体３に近接する樹脂製の板状部材であって、座４の下層を形成するものである。芯部材３０は、アウターカバー２０とインナーシェル４０との間に配設される金属製の強度部材であって、座４の骨格を形成するものである。インナーシェル４０は、アウターカバー２０に支持される樹脂製の板状部材であって、座４の上層を形成するものである。外装部材５０は、インナーシェル４０に支持されるウレタン等のクッション材５１（図６及び図７参照）と、インナーシェル４０に張設されてクッション材５１の上方側を覆うシート表皮材５２と、を有する。 The outer cover 20 is a resin-made plate-like member close to the support structure 3 and forms a lower layer of the seat 4. The core member 30 is a metal strength member disposed between the outer cover 20 and the inner shell 40, and forms the skeleton of the seat 4. The inner shell 40 is a resin plate-like member supported by the outer cover 20 and forms the upper layer of the seat 4. The exterior member 50 includes a cushion material 51 such as urethane supported by the inner shell 40 (see FIGS. 6 and 7), a sheet skin material 52 that is stretched over the inner shell 40 and covers the upper side of the cushion material 51, Have

本実施形態の座４は、芯部材３０に強度を持たせることで、図６及び図７に示すように、アウターカバー２０とインナーシェル４０を薄く軽量化している。アウターカバー２０とインナーシェル４０とを比較すると、インナーシェル４０の方が、アウターカバー２０よりも剛性が高くなっており、また、中央部４０ａが下方に凸となるように湾曲し、弾性変形し易い構成となっている。外装部材５０は、インナーシェル４０の窪んだ部分に対応する厚みが大きく形成されており、図６に示すように、外観上では座４の上面を窪みが無いように見せている。この座４は、以下説明する荷重支持構造を備えている。 In the seat 4 of this embodiment, the outer cover 20 and the inner shell 40 are thinned and lightened by giving the core member 30 strength as shown in FIGS. 6 and 7. Comparing the outer cover 20 and the inner shell 40, the inner shell 40 is higher in rigidity than the outer cover 20, and is curved and elastically deformed so that the central portion 40a protrudes downward. It has an easy configuration. The exterior member 50 is formed to have a large thickness corresponding to the recessed portion of the inner shell 40, and as shown in FIG. The seat 4 has a load support structure described below.

先ず、芯部材３０は、図３に示すように、インナーシェル４０の中央部４０ａを囲うように配設されている。この芯部材３０は、略Ｕ字状に形成された第１のフレーム３１と、第１のフレーム３１の間に架設された第２のフレーム３２と、座支持部１３に取り付けられる取付部３３と、を有する。第１のフレーム３１及び第２のフレーム３２は、それぞれ中空のパイプ状に形成され、互いに接合されて略矩形の開口部３４を形成する構成となっている。開口部３４は、インナーシェル４０の中央部４０ａと対向するように配設される。 First, as shown in FIG. 3, the core member 30 is disposed so as to surround the central portion 40 a of the inner shell 40. The core member 30 includes a first frame 31 formed in a substantially U shape, a second frame 32 laid between the first frames 31, and an attachment portion 33 attached to the seat support portion 13. Have. The first frame 31 and the second frame 32 are each formed in a hollow pipe shape and are joined to each other to form a substantially rectangular opening 34. The opening 34 is disposed so as to face the central portion 40 a of the inner shell 40.

第１のフレーム３１の両端部３１ａは、第２のフレーム３２よりも前方に突出して設けられている。第２のフレーム３２は、第１のフレーム３１の両端部３１ａよりも後方に配設され、左右方向に延在して設けられている。取付部３３は、斜め後方に延びる板状部材であって、第１のフレーム３１の左右に接合されている。取付部３３には、芯部材３０と支持構造体３とを締結する第１の締結部材６１が挿通される開口部３３ａが形成されている。一方、第２のフレーム３２の中央には、第１の締結部材６１よりも前方で、芯部材３０と支持構造体３とを締結する第２の締結部材６２が挿通される開口部３２ａが形成されている。 Both end portions 31 a of the first frame 31 are provided so as to protrude forward from the second frame 32. The second frame 32 is disposed behind the both end portions 31a of the first frame 31 and extends in the left-right direction. The attachment portion 33 is a plate-like member that extends obliquely rearward, and is joined to the left and right of the first frame 31. The attachment portion 33 is formed with an opening 33a through which the first fastening member 61 that fastens the core member 30 and the support structure 3 is inserted. On the other hand, in the center of the second frame 32, an opening 32a is formed in front of the first fastening member 61 and through which the second fastening member 62 that fastens the core member 30 and the support structure 3 is inserted. Has been.

図９は、本発明の実施形態におけるアウターカバー２０の斜視図である。図１０は、図１の矢視Ｄ−Ｄ断面図である。
図９に示すように、アウターカバー２０は、芯部材３０よりも一回り大きく形成されており、芯部材３０の底面及び側面を覆うものである。このアウターカバー２０は、芯部材３０の第１のフレーム３１及び第２のフレーム３２を覆う本体カバー２０ａと、芯部材３０の取付部３３を覆う取付部カバー２０ｂと、からなる。取付部カバー２０ｂは、第１の締結部材６１が挿通される開口部２０ｂ１が形成されている。一方、本体カバー２０ａは、第２の締結部材６２が挿通される開口部２０ａ１が形成されている。 FIG. 9 is a perspective view of the outer cover 20 in the embodiment of the present invention. FIG. 10 is a cross-sectional view taken along the line DD in FIG.
As shown in FIG. 9, the outer cover 20 is formed slightly larger than the core member 30 and covers the bottom surface and side surfaces of the core member 30. The outer cover 20 includes a main body cover 20 a that covers the first frame 31 and the second frame 32 of the core member 30, and an attachment portion cover 20 b that covers the attachment portion 33 of the core member 30. The attachment cover 20b is formed with an opening 20b1 through which the first fastening member 61 is inserted. On the other hand, the main body cover 20a has an opening 20a1 through which the second fastening member 62 is inserted.

アウターカバー２０は、図１０に示すように、支持構造体３の座受部１１と係合する係合溝２１を有する。係合溝２１は、上方に凸となる円弧状に形成され、座受部１１の周面上部に当接可能な構成となっている。この係合溝２１は、座４の回動軸（第１の締結部材６１）に対する半径距離が座受部１１と同一になるように配設されている。係合溝２１には、開口部２０ａ１が形成されている。開口部２０ａ１は、係合溝２１と座受部１１とが係合したときに、座受部１１に設けられた第２の締結部材６２の締結部６３と対向するように配設されている。締結部６３は、第２の締結部材６２が螺合するナット部材であり、座受部１１の周面上部中央に取り付けられている。 As shown in FIG. 10, the outer cover 20 has an engagement groove 21 that engages with the seat receiving portion 11 of the support structure 3. The engaging groove 21 is formed in an arc shape that protrudes upward, and is configured to be able to abut on the upper peripheral surface of the seat receiving portion 11. The engagement groove 21 is arranged such that the radial distance of the seat 4 with respect to the rotation shaft (first fastening member 61) is the same as that of the seat receiving portion 11. An opening 20 a 1 is formed in the engagement groove 21. The opening 20a1 is disposed so as to face the fastening portion 63 of the second fastening member 62 provided in the seat receiving portion 11 when the engagement groove 21 and the seat receiving portion 11 are engaged. . The fastening portion 63 is a nut member into which the second fastening member 62 is screwed, and is attached to the center of the upper surface of the seat receiving portion 11.

図９に戻り、アウターカバー２０には、芯部材３０と嵌合する第１の嵌合部２２と、インナーシェル４０と嵌合する第２の嵌合部２３と、が設けられている。第１の嵌合部２２及び第２の嵌合部２３は、アウターカバー２０の内面に設けられている。このため、アウターカバー２０にインナーシェル４０が組み合わされると、第１の嵌合部２２及び第２の嵌合部２３は、インナーシェル４０に覆われ、外部に露呈することはない。第１の嵌合部２２は、芯部材３０の両端部３１ａが挿入される挿入部２４と、芯部材３０を受ける受け部２５と、芯部材３０を挟み込む第１の爪部対２６と、を有する。 Returning to FIG. 9, the outer cover 20 is provided with a first fitting portion 22 that fits with the core member 30 and a second fitting portion 23 that fits with the inner shell 40. The first fitting portion 22 and the second fitting portion 23 are provided on the inner surface of the outer cover 20. For this reason, when the inner shell 40 is combined with the outer cover 20, the first fitting portion 22 and the second fitting portion 23 are covered with the inner shell 40 and are not exposed to the outside. The first fitting portion 22 includes an insertion portion 24 into which both end portions 31a of the core member 30 are inserted, a receiving portion 25 that receives the core member 30, and a first claw portion pair 26 that sandwiches the core member 30. Have.

挿入部２４は、アウターカバー２０の前側に一対で設けられている。挿入部２４には、芯部材３０の両端部３１ａが挿入される不図示の開口部が形成されている。挿入部２４に両端部３１ａが挿入されることで、前方への芯部材３０の移動が規制される。
受け部２５は、アウターカバー２０の前後左右の四辺に設けられている。この受け部２５は、下方に凸となる略円弧状に形成され、芯部材３０に沿って複数配設されており、第１のフレーム３１を支持する構成となっている。受け部２５に芯部材３０が載置されることで、下方への芯部材３０の移動が規制される。 The insertion portion 24 is provided as a pair on the front side of the outer cover 20. The insertion portion 24 is formed with an opening (not shown) into which both end portions 31a of the core member 30 are inserted. By inserting both end portions 31a into the insertion portion 24, the movement of the core member 30 forward is restricted.
The receiving portions 25 are provided on the four sides on the front, rear, left and right of the outer cover 20. The receiving portion 25 is formed in a substantially arc shape that protrudes downward, and a plurality of receiving portions 25 are disposed along the core member 30, and are configured to support the first frame 31. By placing the core member 30 on the receiving portion 25, the downward movement of the core member 30 is restricted.

第１の爪部対２６は、アウターカバー２０の前後左右の四辺に設けられている。この第１の爪部対２６は、芯部材３０に沿って複数配設されており、第１のフレーム３１及び第２のフレーム３２を挟み込む構成となっている。具体的に、第１の爪部対２６は、係合溝２１に沿って２箇所で芯部材３０の第２のフレーム３２を挟み込み、また、アウターカバー２０の左右の二辺のそれぞれ２箇所で芯部材３０の第１のフレーム３１を挟み込み、また、アウターカバー２０の後方の一辺の中央１箇所で芯部材３０の第１のフレーム３１を挟み込む構成となっている。 The first pair of claws 26 are provided on the four sides on the front, rear, left and right of the outer cover 20. A plurality of the first claw portion pairs 26 are arranged along the core member 30 and are configured to sandwich the first frame 31 and the second frame 32. Specifically, the first claw portion pair 26 sandwiches the second frame 32 of the core member 30 at two locations along the engagement groove 21, and at two locations on the left and right sides of the outer cover 20. The first frame 31 of the core member 30 is sandwiched, and the first frame 31 of the core member 30 is sandwiched at one central position on the rear side of the outer cover 20.

図１１は、図７の領域Ｋの拡大図である。
図１１に示すように、第１の爪部対２６は、芯部材３０を挟んで一対で設けられている。第１の爪部対２６の離間寸法は、芯部材３０のパイプ直径に対応して設定されている。第１の爪部対２６は、アウターカバー２０に対し上方に突出して設けられている。この第１の爪部対２６の先端部には、芯部材３０を保持するフック状の保持部２７が設けられている。保持部２７の離間寸法は、芯部材３０のパイプ直径よりも小さく設定されている。 FIG. 11 is an enlarged view of a region K in FIG.
As shown in FIG. 11, the first claw portion pair 26 is provided as a pair with the core member 30 interposed therebetween. The separation dimension of the first claw portion pair 26 is set corresponding to the pipe diameter of the core member 30. The first claw portion pair 26 is provided so as to protrude upward with respect to the outer cover 20. A hook-shaped holding portion 27 that holds the core member 30 is provided at the distal end portion of the first claw portion pair 26. The separation dimension of the holding portion 27 is set smaller than the pipe diameter of the core member 30.

芯部材３０を第１の爪部対２６で挟み込むときは、第１の爪部対２６を離間する方向（開き方向）に弾性変形させ、弾性を利用して芯部材３０の周面上部に保持部２７を引っ掛ける。このように、芯部材３０を第１の爪部対２６で挟み込むことで、第１の爪部対２６の対向方向及び上方への芯部材３０の移動が規制される。本実施形態では、図９に示すように、第１の爪部対２６がアウターカバー２０の前後左右の四辺に設けられているため、芯部材３０を複数の第１の爪部対２６で挟み込むことで、前後、左右及び上方への芯部材３０の移動が規制される。 When the core member 30 is sandwiched between the first claw portion pair 26, the first claw portion pair 26 is elastically deformed in the direction of separating (opening direction) and is held on the upper peripheral surface of the core member 30 using elasticity. Hook part 27. Thus, by sandwiching the core member 30 between the first claw portion pair 26, the movement of the core member 30 in the opposing direction and upward of the first claw portion pair 26 is restricted. In the present embodiment, as shown in FIG. 9, since the first claw portion pair 26 is provided on the front, rear, left and right four sides of the outer cover 20, the core member 30 is sandwiched between the plurality of first claw portion pairs 26. Thus, the movement of the core member 30 forward and backward, left and right, and upward is restricted.

第２の嵌合部２３は、図９に示すように、インナーシェル４０に掛止する爪部２８と、インナーシェル４０に挿入される挿入ピン２９と、を有する。
爪部２８は、アウターカバー２０の前方の一辺に設けられている。この爪部２８は、アウターカバー２０の上方に突出し、その先端フックが後方を向いて複数設けられている。
挿入ピン２９は、アウターカバー２０の左右の二辺及び後方の一辺に設けられている。この挿入ピン２９は、アウターカバー２０の上方に突出し、左右の二辺及び後方の一辺のそれぞれの２箇所に設けられている。 As shown in FIG. 9, the second fitting portion 23 includes a claw portion 28 that is hooked on the inner shell 40 and an insertion pin 29 that is inserted into the inner shell 40.
The claw portion 28 is provided on one side in front of the outer cover 20. The claw portion 28 protrudes above the outer cover 20, and a plurality of hooks are provided with the front end hooks facing rearward.
The insertion pins 29 are provided on the left and right sides of the outer cover 20 and the rear side. The insertion pins 29 protrude above the outer cover 20 and are provided at two positions on each of the left and right sides and the rear side.

図１２は、本発明の実施形態におけるインナーシェル４０の底面側斜視図である。図１３は、本発明の実施形態におけるインナーシェル４０の底面図である。図１４は、本発明の実施形態におけるインナーシェル４０の右側面図である。
インナーシェル４０は、図１２及び図１３に示すように、アウターカバー２０に設けられた第２の嵌合部２３の受け側となるシャフト部４１と、嵌合孔部４２と、を有する。 FIG. 12 is a bottom perspective view of the inner shell 40 in the embodiment of the present invention. FIG. 13 is a bottom view of the inner shell 40 in the embodiment of the present invention. FIG. 14 is a right side view of the inner shell 40 in the embodiment of the present invention.
As shown in FIGS. 12 and 13, the inner shell 40 includes a shaft portion 41 serving as a receiving side of the second fitting portion 23 provided on the outer cover 20, and a fitting hole portion 42.

シャフト部４１は、インナーシェル４０の前方の一辺に設けられている。このシャフト部４１は、左右方向に延在し、アウターカバー２０に設けられた爪部２８が掛止可能な構成となっている。シャフト部４１に爪部２８が掛止することで、座４の前方においてアウターカバー２０とインナーシェル４０とが嵌合する。
嵌合孔部４２は、インナーシェル４０の左右の二辺及び後方の一辺に設けられている。この嵌合孔部４２は、アウターカバー２０の挿入ピン２９が嵌合可能な構成となっている。嵌合孔部４２に挿入ピン２９が挿入されることで、座４の左右及び後方においてアウターカバー２０とインナーシェル４０とが嵌合する。 The shaft portion 41 is provided on one side in front of the inner shell 40. The shaft portion 41 extends in the left-right direction, and has a configuration in which a claw portion 28 provided on the outer cover 20 can be hooked. When the claw portion 28 is hooked on the shaft portion 41, the outer cover 20 and the inner shell 40 are fitted in front of the seat 4.
The fitting hole portions 42 are provided on the left and right sides of the inner shell 40 and the rear side. The fitting hole 42 is configured to be able to fit the insertion pin 29 of the outer cover 20. By inserting the insertion pin 29 into the fitting hole portion 42, the outer cover 20 and the inner shell 40 are fitted on the left and right sides and the rear side of the seat 4.

具体的に、嵌合孔部４２は、図８に示すように、挿入ピン２９が引っ掛かる羽根部対４３を有する。羽根部対４３は、上方に向かって徐々に近接するように傾斜している。一方、挿入ピン２９の先端部には、拡径したアンカー部２９ａが設けられている。嵌合孔部４２に挿入ピン２９を挿入するときは、アンカー部２９ａが羽根部対４３を離間する方向に弾性変形させる。アンカー部２９ａが羽根部対４３を通過すると、羽根部対４３が元の位置に戻り、アンカー部２９ａの返しが羽根部対４３に引っ掛かり、抜けが規制される。 Specifically, as shown in FIG. 8, the fitting hole portion 42 has a blade portion pair 43 on which the insertion pin 29 is caught. The blade pair 43 is inclined so as to gradually approach upward. On the other hand, an enlarged anchor portion 29 a is provided at the distal end portion of the insertion pin 29. When the insertion pin 29 is inserted into the fitting hole portion 42, the anchor portion 29a elastically deforms the blade portion pair 43 in the direction of separating. When the anchor portion 29a passes the blade portion pair 43, the blade portion pair 43 returns to the original position, the return of the anchor portion 29a is caught by the blade portion pair 43, and the removal is restricted.

図１２及び図１３に戻り、インナーシェル４０には、芯部材３０を挟み込んだ第１の爪部対２６に外嵌する第２の爪部対４４が設けられている。第２の爪部対４４は、インナーシェル４０の前後左右の四辺に設けられている。この第２の爪部対４４は、芯部材３０に沿って複数配設されている。具体的に、第２の爪部対４４は、第１の爪部対２６と同数で設けられ、係合溝２１に沿って２箇所に設けられた第１の爪部対２６に外嵌し、また、アウターカバー２０の左右の二辺のそれぞれ２箇所に設けられた第１の爪部対２６に外嵌し、また、アウターカバー２０の後方の一辺の中央１箇所に設けられた第１の爪部対２６に外嵌する構成となっている。 Returning to FIG. 12 and FIG. 13, the inner shell 40 is provided with a second pair of claws 44 that are fitted around the first pair of claws 26 sandwiching the core member 30. The second claw portion pair 44 is provided on the four sides on the front, rear, left and right of the inner shell 40. A plurality of the second claw portion pairs 44 are arranged along the core member 30. Specifically, the same number of second claw pairs 44 is provided as the number of first claw pairs 26, and is fitted around the first claw pairs 26 provided at two locations along the engagement groove 21. In addition, the outer cover 20 is externally fitted to the first claw portion pair 26 provided at each of the two left and right sides of the outer cover 20, and the first one provided at the center of one side on the rear side of the outer cover 20. The claw portion pair 26 is externally fitted.

図１１に示すように、第２の爪部対４４は、アウターカバー２０とインナーシェル４０が嵌合したときに、第１の爪部対２６の背面側に対向するようにインナーシェル４０に対して下方に突出して設けられている。第２の爪部対４４の離間寸法は、第１の爪部対２６よりも大きくなるように設定されている。また、第２の爪部対４４の離間寸法は、保持部２７が芯部材３０のパイプ直径まで開いたときの第１の爪部対２６の最も外側（背面から背面まで）の離間寸法よりも小さくなるように設定されている。これにより、インナーシェル４０を取り外すことなく、第１の爪部対２６から芯部材３０を取り外すことができなくなっている。 As shown in FIG. 11, when the outer cover 20 and the inner shell 40 are fitted, the second pair of claws 44 is opposed to the inner shell 40 so as to face the back side of the first claws 26. Projecting downward. The separation dimension of the second claw portion pair 44 is set to be larger than that of the first claw portion pair 26. Further, the separation dimension of the second claw portion pair 44 is larger than the separation dimension on the outermost side (from the back surface to the back surface) of the first claw portion pair 26 when the holding portion 27 is opened to the pipe diameter of the core member 30. It is set to be smaller. Thereby, the core member 30 cannot be removed from the first claw pair 26 without removing the inner shell 40.

第２の爪部対４４には、図１２及び図１３に示すように、補強部４５が接続されている。補強部４５は、第２の爪部対４４の剛性を、第１の爪部対２６よりも大きくするものである。この補強部４５は、第１の爪部対２６の開き方向に延在し、第２の爪部対４４の背面側に接続されている。本実施形態の補強部４５は、インナーシェル４０に設けられた補強リブ４６と一体的に設けられている。補強リブ４６は、インナーシェル４０から下方に突出し、前後左右に格子状に延在している。第２の爪部対４４は、補強リブ４６の先端、若しくは、隣り合う補強リブ４６の間に配置されている。 As shown in FIGS. 12 and 13, a reinforcing portion 45 is connected to the second claw portion pair 44. The reinforcing portion 45 is to make the rigidity of the second claw portion pair 44 larger than that of the first claw portion pair 26. The reinforcing portion 45 extends in the opening direction of the first claw portion pair 26 and is connected to the back side of the second claw portion pair 44. The reinforcing portion 45 of this embodiment is provided integrally with a reinforcing rib 46 provided on the inner shell 40. The reinforcing ribs 46 protrude downward from the inner shell 40 and extend in a lattice shape in the front-rear and left-right directions. The second claw portion pair 44 is disposed at the tip of the reinforcing rib 46 or between the adjacent reinforcing ribs 46.

続いて、上記構成の座４の組み付け方法について説明する。 Next, a method for assembling the seat 4 having the above configuration will be described.

先ず、図３に示すように、アウターカバー２０に設けられた第１の嵌合部２２と芯部材３０とを嵌合させ、アウターカバー２０に芯部材３０を支持させる。具体的には、図９に示すように、芯部材３０の前方に突出する両端部３１ａを挿入部２４に挿入し、次に、芯部材３０の後方を下げ、受け部２５に載置すると共に、第１の爪部対２６に挟み込ませる。このように、アウターカバー２０に芯部材３０を支持させたら、図３に示すように、芯部材３０の取付部３３と支持構造体３の座支持部１３とをボルト状の第１の締結部材６１によって締結する。 First, as shown in FIG. 3, the first fitting portion 22 provided in the outer cover 20 and the core member 30 are fitted, and the core member 30 is supported by the outer cover 20. Specifically, as shown in FIG. 9, both end portions 31 a protruding forward of the core member 30 are inserted into the insertion portion 24, and then the rear of the core member 30 is lowered and placed on the receiving portion 25. The first claw portion pair 26 is sandwiched. Thus, if the core member 30 is supported by the outer cover 20, as shown in FIG. 3, the attachment part 33 of the core member 30 and the seat support part 13 of the support structure 3 are connected to the bolt-shaped first fastening member. Fasten with 61.

取付部３３は、開口部３３ａ及び取付部カバー２０ｂの開口部２０ｂ１を挿通する第１の締結部材６１によって、座支持部１３に対し締結される。これにより、芯部材３０は、支持構造体３に対して左右方向に延びる軸回りに回動可能とされる。芯部材３０を第１の締結部材６１によって回動可能に取り付けたら、芯部材３０を回動させて支持構造体３の座受部１１の上に倒す。芯部材３０を倒すと、図１０に示すように、アウターカバー２０に設けられた係合溝２１が座受部１１に係合し、開口部２０ａ１を介して、第２のフレーム３２に形成された開口部３２ａと、座受部１１に設けられた締結部６３とが対向する。 The attachment portion 33 is fastened to the seat support portion 13 by the first fastening member 61 that passes through the opening portion 33a and the opening portion 20b1 of the attachment portion cover 20b. Thereby, the core member 30 can be rotated around an axis extending in the left-right direction with respect to the support structure 3. When the core member 30 is pivotally attached by the first fastening member 61, the core member 30 is rotated and tilted onto the seat receiving portion 11 of the support structure 3. When the core member 30 is tilted, as shown in FIG. 10, the engagement groove 21 provided in the outer cover 20 engages with the seat receiving portion 11 and is formed in the second frame 32 through the opening 20a1. The opening portion 32a and the fastening portion 63 provided in the seat receiving portion 11 face each other.

次に、ボルト状の第２の締結部材６２によって、アウターカバー２０を介して芯部材３０と支持構造体３とを締結する。具体的には、第２の締結部材６２を上方から挿入し、第２のフレーム３２の開口部３２ａ、アウターカバー２０の開口部２０ａ１を挿通させ、座受部１１の締結部６３に螺合させる。これにより、芯部材３０は、支持構造体３に対して回動不能に固定される。このように、芯部材３０を支持構造体３に固定したら、図９に示す第２の嵌合部２３によって、アウターカバー２０とインナーシェル４０とを嵌合させる。なお、インナーシェル４０には、予め外装部材５０を張り付けておく。 Next, the core member 30 and the support structure 3 are fastened with the bolt-like second fastening member 62 through the outer cover 20. Specifically, the second fastening member 62 is inserted from above, and the opening 32 a of the second frame 32 and the opening 20 a 1 of the outer cover 20 are inserted and screwed into the fastening portion 63 of the seat receiving portion 11. . Thereby, the core member 30 is fixed to the support structure 3 so as not to rotate. When the core member 30 is fixed to the support structure 3 in this manner, the outer cover 20 and the inner shell 40 are fitted by the second fitting portion 23 shown in FIG. The outer member 50 is attached to the inner shell 40 in advance.

先ず、インナーシェル４０とアウターカバー２０の前方を合わせ込み、インナーシェル４０のシャフト部４１にアウターカバー２０の爪部２８を掛止させる。次に、インナーシェル４０を、シャフト部４１を中心に回動させ、インナーシェル４０の後方をアウターカバー２０に降ろし、インナーシェル４０に設けられた嵌合孔部４２に、アウターカバー２０に設けられた挿入ピン２９を挿入させる。このようにして、アウターカバー２０とインナーシェル４０とを嵌合させると、芯部材３０がアウターカバー２０とインナーシェル４０との間に挟み込まれ、第２の締結部材６２が覆われる。 First, the inner shell 40 and the front of the outer cover 20 are aligned, and the claw portion 28 of the outer cover 20 is hooked on the shaft portion 41 of the inner shell 40. Next, the inner shell 40 is rotated around the shaft portion 41, the rear of the inner shell 40 is lowered to the outer cover 20, and the fitting hole portion 42 provided in the inner shell 40 is provided in the outer cover 20. The insertion pin 29 is inserted. When the outer cover 20 and the inner shell 40 are fitted in this way, the core member 30 is sandwiched between the outer cover 20 and the inner shell 40 and the second fastening member 62 is covered.

これにより、インナーシェル４０を取り外すこと無しに、芯部材３０と支持構造体３との締結を解除することができなくなる。また、アウターカバー２０とインナーシェル４０とを嵌合させると、図１１に示すように、インナーシェル４０に設けられた第２の爪部対４４が芯部材３０を挟み込んだ第１の爪部対２６に外嵌する。これにより、インナーシェル４０を取り外すこと無しに、第１の爪部対２６を開いて芯部材３０を取り外すことができなくなる。
以上のようにして、支持構造体３に対し座４が組み付けられ、図１及び図２に示す椅子１が得られる。 Accordingly, the fastening between the core member 30 and the support structure 3 cannot be released without removing the inner shell 40. Further, when the outer cover 20 and the inner shell 40 are fitted, as shown in FIG. 11, the second pair of claws 44 provided on the inner shell 40 sandwich the core member 30 and the first pair of claws. 26. Accordingly, the core member 30 cannot be removed by opening the first claw portion pair 26 without removing the inner shell 40.
As described above, the seat 4 is assembled to the support structure 3, and the chair 1 shown in FIGS. 1 and 2 is obtained.

このように、本実施形態では、座４と、座４を支持する支持構造体３と、を備える椅子１であって、座４と支持構造体３とを締結する第１の締結部材６１と、第１の締結部材６１よりも前方で、座４と支持構造体３とを締結する第２の締結部材６２と、を有しており、座４は、第２の締結部材６２が挿通される開口部２０ａ１が形成されたアウターカバー２０と、開口部２０ａ１を挿通する第２の締結部材６２によって、アウターカバー２０を介して支持構造体３と締結される芯部材３０と、芯部材３０をアウターカバー２０との間で挟み込み、第２の締結部材６２を覆うインナーシェル４０と、を有するという構成を採用する。
この構成によれば、第１の締結部材６１と第２の締結部材６２によって前後に離間して座４と支持構造体３とを締結するため、座４の支持が安定する。この構成において、第２の締結部材６２は、座４のアウターカバー２０に形成された開口部２０ａ１を挿通して、芯部材３０と支持構造体３とを締結するため、アウターカバー２０の機能は単なるカバー機能にとどめることができ、強度の小さな厚みのない部材として運用できる。このため、座４のアウターカバー２０を厚くすることなく、また、強度は芯部材３０に持たせて、座４を過度に厚くすることなく強度を大きくできるため、外観に影響を与えることはない。また、第２の締結部材６２は、第１の締結部材６１よりも比較的着座者の手が届き易い座４の前方に配設されるが、アウターカバー２０との間で芯部材３０を挟み込むインナーシェル４０によって覆われているため、着座者はインナーシェル４０を取り外すこと無しに、第２の締結部材６２の締結解除を行うことができなくなる。このため、着座者による不測の座４の解体を防止できる。 Thus, in this embodiment, the chair 1 includes the seat 4 and the support structure 3 that supports the seat 4, and the first fastening member 61 that fastens the seat 4 and the support structure 3. And a second fastening member 62 that fastens the seat 4 and the support structure 3 in front of the first fastening member 61, and the seat 4 has the second fastening member 62 inserted therethrough. The core member 30, which is fastened to the support structure 3 through the outer cover 20, by the outer cover 20 in which the opening 20 a 1 is formed, and the second fastening member 62 inserted through the opening 20 a 1, A configuration in which the inner shell 40 is sandwiched between the outer cover 20 and the second fastening member 62 is covered is employed.
According to this configuration, the seat 4 and the support structure 3 are fastened apart by the first fastening member 61 and the second fastening member 62 and fastened, so that the support of the seat 4 is stabilized. In this configuration, since the second fastening member 62 is inserted through the opening 20a1 formed in the outer cover 20 of the seat 4 and fastens the core member 30 and the support structure 3, the function of the outer cover 20 is It can be limited to a simple cover function and can be operated as a member having a small strength and no thickness. Therefore, the outer cover 20 of the seat 4 can be increased without increasing the thickness of the outer cover 20 and the core member 30 can be strengthened without excessively increasing the thickness of the seat 4, so that the appearance is not affected. . Further, the second fastening member 62 is disposed in front of the seat 4 that is more easily reachable by the seated person than the first fastening member 61, but sandwiches the core member 30 with the outer cover 20. Since it is covered with the inner shell 40, the seated person cannot release the fastening of the second fastening member 62 without removing the inner shell 40. For this reason, the unexpected disassembly of the seat 4 by the seated person can be prevented.

また、本実施形態では、芯部材３０は、第１の締結部材６１によって、支持構造体３に対し幅方向に延びる軸回りに回動可能に締結されるという構成を採用する。
この構成によれば、芯部材３０の後方が第１の締結部材６１によって支持構造体３に対し幅方向に延びる軸回りに回動可能に締結されるため、芯部材３０の後方を締結した後、芯部材３０の前方を倒すように回動させることで、芯部材３０を支持構造体３上に位置させることができ、組み立てが容易となる。 Moreover, in this embodiment, the core member 30 employ | adopts the structure that it is fastened by the 1st fastening member 61 so that rotation around the axis | shaft extended in the width direction with respect to the support structure 3 is possible.
According to this configuration, the rear of the core member 30 is fastened to the support structure 3 by the first fastening member 61 so as to be rotatable about the axis extending in the width direction. The core member 30 can be positioned on the support structure 3 by rotating it so that the front side of the core member 30 is tilted, and assembly is facilitated.

また、本実施形態では、支持構造体３は、座４の下方を支持する座受部１１を有し、第２の締結部材６２は、芯部材３０と座受部１１とを締結するという構成を採用する。
この構成によれば、芯部材３０の前方が第２の締結部材６２によって座４の下方を支持する強度部材である座受部１１と締結されるため、座４の支持が安定する。 In the present embodiment, the support structure 3 includes the seat receiving portion 11 that supports the lower portion of the seat 4, and the second fastening member 62 fastens the core member 30 and the seat receiving portion 11. Is adopted.
According to this configuration, the front of the core member 30 is fastened to the seat receiving portion 11 that is a strength member that supports the lower portion of the seat 4 by the second fastening member 62, and thus the support of the seat 4 is stabilized.

また、本実施形態では、アウターカバー２０は、座受部１１と係合する係合溝２１を有し、係合溝２１には、開口部２０ａ１が形成されているという構成を採用する。
この構成によれば、アウターカバー２０が座受部１１が係合する係合溝２１を有しているため、支持構造体３に対する位置決めが行い易くなる。 In the present embodiment, the outer cover 20 has an engagement groove 21 that engages with the seat receiving portion 11, and the engagement groove 21 is formed with an opening 20 a 1.
According to this structure, since the outer cover 20 has the engagement groove 21 with which the seat receiving part 11 is engaged, positioning with respect to the support structure 3 is facilitated.

また、本実施形態では、アウターカバー２０は、芯部材３０が嵌合する第１の嵌合部２２を有するという構成を採用する。
この構成によれば、アウターカバー２０の第１の嵌合部２２に芯部材３０を嵌合し、アウターカバー２０と嵌合した状態で芯部材３０を支持構造体３に締結するため、アウターカバー２０と芯部材３０とを位置合わせする必要がなく、組み立てが容易となる。 Moreover, in this embodiment, the outer cover 20 employ | adopts the structure that it has the 1st fitting part 22 with which the core member 30 fits.
According to this configuration, the core member 30 is fitted to the first fitting portion 22 of the outer cover 20, and the core member 30 is fastened to the support structure 3 while being fitted to the outer cover 20. There is no need to align 20 and the core member 30, and assembly becomes easy.

このように、上述した本実施形態によれば、着座者による座の解体を防止でき且つ外観に悪影響を与えることのない椅子１が得られる。 Thus, according to this embodiment mentioned above, the chair 1 which can prevent disassembly of a seat by a seated person and does not have a bad influence on an external appearance is obtained.

以上、図面を参照しながら本発明の好適な実施形態について説明したが、本発明は上記実施形態に限定されるものではない。上述した実施形態において示した各構成部材の諸形状や組み合わせ等は一例であって、本発明の主旨から逸脱しない範囲において設計要求等に基づき種々変更可能である。 As mentioned above, although preferred embodiment of this invention was described referring drawings, this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

例えば、上記実施形態では、芯部材３０と座受部１１とを締結する構成について説明したが、本発明はこの構成に限定されるものではなく、例えば、脚部２もパイプからなるパイプ椅子等では、芯部材３０と脚部２とを締結する構成であってもよい。 For example, in the above-described embodiment, the configuration in which the core member 30 and the seat receiving portion 11 are fastened has been described. However, the present invention is not limited to this configuration. Then, the structure which fastens the core member 30 and the leg part 2 may be sufficient.

また、例えば、上記実施形態では、芯部材３０が矩形の枠部材からなる構成について説明したが、本発明はこの構成に限定されるものではなく、例えば、芯部材３０が椅子１の幅方向に離間した左右一対の杆部材を前後方向の適所で連結した強度部材からなる構成であってもよい。 Further, for example, in the above-described embodiment, the configuration in which the core member 30 is formed of a rectangular frame member has been described. However, the present invention is not limited to this configuration. For example, the core member 30 extends in the width direction of the chair 1. The structure which consists of an intensity | strength member which connected the left-right paired collar member spaced apart in the front-back direction may be sufficient.

１椅子
３支持構造体
４座
１１座受部
２０アウターカバー（下層部材）
２０ａ１開口部
２１係合溝
２２第１の嵌合部（嵌合部）
３０芯部材
４０インナーシェル（上層部材）
６１第１の締結部材
６２第２の締結部材 DESCRIPTION OF SYMBOLS 1 Chair 3 Support structure 4 Seat 11 Seat receiving part 20 Outer cover (lower layer member)
20a1 opening 21 engagement groove 22 first fitting part (fitting part)
30 core member 40 inner shell (upper layer member)
61 1st fastening member 62 2nd fastening member

Claims

A chair comprising a seat and a support structure that supports the seat,
A first fastening member for fastening the seat and the support structure;
A second fastening member for fastening the seat and the support structure in front of the first fastening member;
The seat is
A lower layer member formed with an opening through which the second fastening member is inserted;
A core member fastened to the support structure via the lower layer member by the second fastening member inserted through the opening;
An upper layer member that sandwiches the core member with the lower layer member and covers the second fastening member.

2. The chair according to claim 1, wherein the core member is fastened by the first fastening member so as to be rotatable about an axis extending in a width direction with respect to the support structure.

The support structure has a seat receiving portion that supports a lower portion of the seat,
The chair according to claim 1 or 2, wherein the second fastening member fastens the core member and the seat receiving portion.

The lower layer member has an engagement groove that engages with the seat receiving portion,
The chair according to claim 3, wherein the opening is formed in the engagement groove.

The chair according to any one of claims 1 to 4, wherein the lower layer member has a fitting portion into which the core member is fitted.