JP6958247B2

JP6958247B2 - Chair

Info

Publication number: JP6958247B2
Application number: JP2017213353A
Authority: JP
Inventors: 塁大澤; 知冬甘利; 竹原　成規; 太一宮前; 佐藤　宏樹; 杉本　直樹; 啓太野村
Original assignee: Itoki Corp; Quali Co Ltd
Current assignee: Itoki Corp; Quali Co Ltd
Priority date: 2017-11-04
Filing date: 2017-11-04
Publication date: 2021-11-02
Anticipated expiration: 2037-11-04
Also published as: JP2019083950A

Description

本発明は椅子に関し、詳細には学校の講堂等において机と組み合わせて講義用システムを構成する椅子に関するものである。 The present invention relates to a chair, and more particularly to a chair that constitutes a lecture system in combination with a desk in a school auditorium or the like.

従来、学校の講堂等において机と複数の椅子とを組み合わせて講義用システムを構成する際に、椅子における脚柱と座体とをガイド機構を介して連結することにより、座体を前後方向にスライド移動させる技術が知られている（例えば、特許文献１を参照）。特許文献１には、ガイド機構をカバー部材で被覆することにより、外部へのグリスの露出やガイド機構への異物の混入を防ぐとともにデザイン性を向上させた椅子が記載されている。 Conventionally, when a desk and a plurality of chairs are combined to form a lecture system in a school auditorium or the like, the pedestal and the seat body in the chair are connected via a guide mechanism to move the seat body in the front-rear direction. A technique for moving a slide is known (see, for example, Patent Document 1). Patent Document 1 describes a chair in which the guide mechanism is covered with a cover member to prevent the exposure of grease to the outside and the entry of foreign matter into the guide mechanism and to improve the design.

特開２００９−１８９５９８号公報JP-A-2009-189598

上記の如く構成した椅子において、交換やメンテナンスのために座体をガイド機構から取り外す場合がある。この際、ガイド機構と座体との連結部分を露出させるためにカバー部材を取り外す必要があるため、作業者による作業負担が大きくなっていた。一方、ガイド機構と座体との連結部分をカバー部材の外側に形成した場合、著しくデザイン性を損なうという問題があった。 In the chair configured as described above, the seat body may be removed from the guide mechanism for replacement or maintenance. At this time, since it is necessary to remove the cover member in order to expose the connecting portion between the guide mechanism and the seat body, the work load on the operator has increased. On the other hand, when the connecting portion between the guide mechanism and the seat body is formed on the outside of the cover member, there is a problem that the design is significantly impaired.

本発明は以上の如き状況に鑑みてなされたものであり、本発明が解決しようとする課題は、デザイン性を損なうことなく、簡易な作業でガイド機構と座体との連結を解除できる椅子を提供することである。 The present invention has been made in view of the above circumstances, and the problem to be solved by the present invention is to provide a chair that can release the connection between the guide mechanism and the seat body by a simple operation without impairing the design. To provide.

本発明は、上記課題を解決するために、以下に構成する椅子を提供する。 The present invention provides a chair configured as follows in order to solve the above problems.

（１）
下端部が床面に固定されて上端部が上方に延出された脚柱と、前記脚柱の上端部に設けられたガイド機構と、前記ガイド機構の上面に支持された座体と、前記座体の下側で前記ガイド機構を被覆するカバー部材と、を備える椅子であって、前記ガイド機構は、前記座体の下面に固定されるフランジ部を備え、前記座体と前記フランジ部とが第一固定具により組付けられ、前記カバー部材と前記フランジ部とが第二固定具により組付けられ、前記カバー部材には、前記カバー部材を貫通する貫通孔が開口され、前記カバー部材と前記フランジ部とを組付けた際には、前記貫通孔を介して前記第一固定具が露出する、椅子。 (1)
A pedestal whose lower end is fixed to the floor and whose upper end extends upward, a guide mechanism provided at the upper end of the pedestal, a seat body supported on the upper surface of the guide mechanism, and the above. A chair including a cover member that covers the guide mechanism on the lower side of the seat, and the guide mechanism includes a flange portion fixed to the lower surface of the seat body, and the seat body and the flange portion. Is assembled by the first fixture, the cover member and the flange portion are assembled by the second fixture, and the cover member is opened with a through hole penetrating the cover member, and the cover member and the cover member are assembled. A chair in which the first fixture is exposed through the through hole when the flange portion is assembled.

（２）
前記カバー部材は、少なくとも二つに分割可能とされる、（１）記載の椅子。 (2)
The chair according to (1), wherein the cover member can be divided into at least two parts.

（３）
前記カバー部材が有底筒状に形成され、前記カバー部材は第一カバー部材と、第二カバー部材とに分割可能とされ、前記第一カバー部材と前記第二カバー部材との少なくとも一方の底部には切り欠き部が形成され、前記第一カバー部材と前記第二カバー部材とを組付けた際に、前記切り欠き部の縁が閉塞されて、前記カバー部材の底部において前記脚柱が挿通される挿通孔が形成される、（１）記載の椅子。 (3)
The cover member is formed in a bottomed tubular shape, and the cover member can be divided into a first cover member and a second cover member, and at least one bottom portion of the first cover member and the second cover member. A notch is formed in the cover member, and when the first cover member and the second cover member are assembled, the edge of the notch is closed and the pedestal is inserted at the bottom of the cover member. The chair according to (1), wherein an insertion hole is formed.

（４）
前記第一カバー部材と前記第二カバー部材との重畳部分が、前記第二固定具により前記フランジ部に組付けられる、（３）記載の椅子。 (4)
The chair according to (3), wherein the overlapping portion of the first cover member and the second cover member is assembled to the flange portion by the second fixture.

以上における本発明に係る椅子は、以下に示す効果を奏する。 The chair according to the present invention described above has the following effects.

（１）の構成によれば、椅子のデザイン性を損なうことなく、簡易な作業でガイド機構と座体との連結を解除できる。 According to the configuration of (1), the connection between the guide mechanism and the seat body can be released by a simple operation without impairing the design of the chair.

（２）の構成によれば、カバー部材の組付け性を向上させることができる。 According to the configuration of (2), the assembling property of the cover member can be improved.

（３）の構成によれば、床面に固定した脚柱にガイド機構及び座体を組付けた後でも、カバー部材を容易にガイド機構に組付けることができ、また、椅子のデザイン性を向上させることができる。 According to the configuration of (3), the cover member can be easily assembled to the guide mechanism even after the guide mechanism and the seat body are attached to the pedestal fixed to the floor surface, and the design of the chair can be improved. Can be improved.

（４）の構成によれば、カバー部材の組付け効率を向上させるとともに、固定具等の部品点数を削減し、椅子の重量及びコストを抑制することができる。 According to the configuration of (4), it is possible to improve the assembling efficiency of the cover member, reduce the number of parts such as fixtures, and reduce the weight and cost of the chair.

一実施形態に係る椅子を示す後方斜視図。A rear perspective view showing a chair according to an embodiment. 椅子を備える講義用システムを示す側面図。Side view showing a lecture system with chairs. 同じく椅子を示す下方斜視図。A downward perspective view also showing a chair. 同じく椅子を示す底面図。Bottom view also showing the chair. 図４におけるＸ−Ｘ線断面図。FIG. 4 is a cross-sectional view taken along line XX in FIG.

以下では図１から図５を用いて、本発明の一実施形態に係る椅子１について説明する。図１中に示す矢印は椅子１の方向を示している。図２に示す如く、椅子１は学校の講堂等において机２と組み合わされて講義用システムを構成する。この際、一台の机２に対して複数脚（例えば３〜４脚）の椅子１を組み合わせることにより、一組の講義用システムが構成される。 Hereinafter, the chair 1 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 5. The arrow shown in FIG. 1 indicates the direction of the chair 1. As shown in FIG. 2, the chair 1 is combined with the desk 2 in a school auditorium or the like to form a lecture system. At this time, a set of lecture systems is configured by combining a plurality of chairs 1 (for example, 3 to 4) with one desk 2.

本実施形態に係る椅子１は、脚柱４と、ガイド機構５と、座体６と、カバー部材８と、を主な構成要素として備える。本実施形態に係る椅子１において、脚柱４及びガイド機構５は鉄又はアルミニウム等の金属製部材を中心に構成される。また、座体６は木材、カバー部材８は樹脂製素材を中心に構成される。ただし、各構成部材の素材については限定されるものではない。 The chair 1 according to the present embodiment includes a pedestal 4, a guide mechanism 5, a seat 6, and a cover member 8 as main components. In the chair 1 according to the present embodiment, the pedestal 4 and the guide mechanism 5 are mainly composed of metal members such as iron or aluminum. The seat body 6 is mainly made of wood, and the cover member 8 is mainly made of a resin material. However, the material of each component is not limited.

脚柱４は、その下端部４ｂが板状のベース体３を介して床面Ｆに固定された角筒状部材である。具体的には脚柱４の下端部４ｂにベース体３が溶接等により固着され、このベース体３が固定具であるボルトＢによって床面Ｆに固定されるのである。脚柱４の上端部４ｔは少し後方に傾いた上方に向かって延出される。ガイド機構５は脚柱４の上端部４ｔに設けられる。 The pedestal 4 is a square tubular member whose lower end 4b is fixed to the floor surface F via a plate-shaped base body 3. Specifically, the base body 3 is fixed to the lower end portion 4b of the pedestal 4 by welding or the like, and the base body 3 is fixed to the floor surface F by bolts B which are fixtures. The upper end portion 4t of the pedestal 4 extends upward with a slight rearward inclination. The guide mechanism 5 is provided at the upper end portion 4t of the pedestal 4.

ガイド機構５の上面には座体６が支持される。座体６は略水平方向に広がる曲面部である座部６ａと、座部６ａの後端から上方に向かって広がる曲面部である背もたれ部６ｂと、で一体的に構成されている。 The seat body 6 is supported on the upper surface of the guide mechanism 5. The seat body 6 is integrally composed of a seat portion 6a which is a curved surface portion extending in a substantially horizontal direction and a backrest portion 6b which is a curved surface portion extending upward from the rear end of the seat portion 6a.

図３に示す如く、ガイド機構５は、脚柱４の上端部４ｔにねじにより固定される支持部材５１と、支持部材５１に対して前後方向に相対変位可能に組付けられるスライド部材５２と、を備える。スライド部材５２には左右の側方に延出されるフランジ部５２ａが形成される。フランジ部５２ａは座部６ａの下面６ｃに、第一固定具である第一ねじ４１により固定される（図５を参照）。なお、フランジ部５２ａをスライド部材５２の前後方向に形成する構成とすることも可能である。また、フランジ５２ａを連続した鍔状部として形成せずに、第一ねじ４１及び第二ねじ４２による固定部分のみに、前後に分割して形成しても差し支えない。 As shown in FIG. 3, the guide mechanism 5 includes a support member 51 fixed to the upper end 4t of the pedestal 4 by a screw, and a slide member 52 assembled so as to be relatively displaceable in the front-rear direction with respect to the support member 51. To be equipped. The slide member 52 is formed with flange portions 52a extending to the left and right sides. The flange portion 52a is fixed to the lower surface 6c of the seat portion 6a by a first screw 41 which is a first fixing tool (see FIG. 5). It is also possible to form the flange portion 52a in the front-rear direction of the slide member 52. Further, the flange 52a may not be formed as a continuous flange-shaped portion, but may be formed by being divided into front and rear parts only in the fixed portion by the first screw 41 and the second screw 42.

支持部材５１は回動可能な複数のローラ（不図示）を備え、これらのローラはスライド部材５２に設けられた複数のレール部５４の内部で回動可能とされる。また、支持部材５１には支持ギヤ（不図示）が回動可能に支持され、スライド部材５２には支持ギヤと噛み合うレールギヤ５６が固定されている。 The support member 51 includes a plurality of rotatable rollers (not shown), and these rollers are rotatable inside a plurality of rail portions 54 provided on the slide member 52. Further, a support gear (not shown) is rotatably supported by the support member 51, and a rail gear 56 that meshes with the support gear is fixed to the slide member 52.

上記構成において、スライド部材５２に対して支持部材５１と前後方向に相対変位する方向に力が加わると、支持ギヤの上側においてレールギヤ５６が支持ギヤを回動させながらスライドする。また、レール部５４の内部でローラを回動させながらレール部５４がスライドする。これにより、支持部材５１に対してスライド部材５２が前後方向に相対変位するのである。支持部材５１に対するスライド部材５２の変位により、座体６は脚柱４に対して前後方向に相対変位される（図２における二点鎖線を参照）。 In the above configuration, when a force is applied to the slide member 52 in a direction in which the support member 51 is displaced relative to the support member 51 in the front-rear direction, the rail gear 56 slides on the upper side of the support gear while rotating the support gear. Further, the rail portion 54 slides while rotating the roller inside the rail portion 54. As a result, the slide member 52 is displaced relative to the support member 51 in the front-rear direction. Due to the displacement of the slide member 52 with respect to the support member 51, the seat body 6 is displaced relative to the pedestal 4 in the front-rear direction (see the two-dot chain line in FIG. 2).

ガイド機構５は下側からカバー部材８によって被覆される。詳細には図５に示す如く、カバー部材８の左右両側面で外側に膨出して形成された固定部８ｂが、スライド部材５２のフランジ部５２ａに第二固定具である第二ねじ４２により固定される。カバー部材８の固定部８ｂには、カバー部材８をフランジ部５２ａに組付けた際に第一ねじ４１の直下で対向する部分に、カバー部材８を貫通する貫通孔８ｃが開口されている。貫通孔８ｃの内径は第一ねじ４１の外径よりも幾分大きな寸法で形成されている。 The guide mechanism 5 is covered with the cover member 8 from below. More specifically, as shown in FIG. 5, the fixing portion 8b formed by bulging outward on both the left and right side surfaces of the cover member 8 is fixed to the flange portion 52a of the slide member 52 by the second screw 42 which is the second fixing tool. Will be done. The fixing portion 8b of the cover member 8 is provided with a through hole 8c penetrating the cover member 8 at a portion facing directly below the first screw 41 when the cover member 8 is assembled to the flange portion 52a. The inner diameter of the through hole 8c is formed to be slightly larger than the outer diameter of the first screw 41.

本実施形態において、カバー部材８は有底筒状に形成され、第一カバー部材である前部カバー８１と、第二カバー部材である後部カバー８２と、に分割可能に構成されている。後部カバー８２の底部には、前側に開口する切り欠き部８２ａが形成されている。前部カバー８１と後部カバー８２とを互いに組付けた際には、前部カバー８１により後部カバー８２の切り欠き部８２ａが閉塞される。これにより、カバー部材８の底部に挿通孔８ａが形成される。図３に示す如く、カバー部材８をスライド部材５２に組付けた際には、挿通孔８ａに脚柱４が挿通される。 In the present embodiment, the cover member 8 is formed in a bottomed cylindrical shape, and is configured to be divisible into a front cover 81 which is a first cover member and a rear cover 82 which is a second cover member. A notch 82a that opens to the front side is formed at the bottom of the rear cover 82. When the front cover 81 and the rear cover 82 are assembled to each other, the cutout portion 82a of the rear cover 82 is closed by the front cover 81. As a result, the insertion hole 8a is formed at the bottom of the cover member 8. As shown in FIG. 3, when the cover member 8 is assembled to the slide member 52, the pedestal 4 is inserted into the insertion hole 8a.

次に、椅子１を組み立てる手順について、図２及び図５を用いて説明する。本実施形態に係る椅子１は略左右対称形状に形成され、組み立ても左右同時に行うため、以下では椅子１の左側の組付け構成について説明し、右側の組付け構成については詳細な説明を省略する。 Next, the procedure for assembling the chair 1 will be described with reference to FIGS. 2 and 5. Since the chair 1 according to the present embodiment is formed in a substantially symmetrical shape and is assembled at the same time on the left and right sides, the assembly configuration on the left side of the chair 1 will be described below, and detailed description of the assembly configuration on the right side will be omitted. ..

椅子１を組み立てる作業者はまず、ボルトＢによってベース体３及び脚柱４を床面Ｆに固定する。次に、ガイド機構５の支持部材５１をねじによって脚柱４の上端部４ｔに固定する。 The worker who assembles the chair 1 first fixes the base body 3 and the pedestal 4 to the floor surface F with bolts B. Next, the support member 51 of the guide mechanism 5 is fixed to the upper end portion 4t of the pedestal 4 with screws.

次に、座体６の座部６ａを第一ねじ４１によってスライド部材５２のフランジ部５２ａに固定する。詳細には図５に示す如く、座部６ａを貫通して開口された固定孔６ｄに、鍔付きナット４３を上方から挿入する。また、フランジ部５２ａに開口された挿通孔５２ｂに第一ねじ４１を下方から挿入する。そして、第一ねじ４１と鍔付きナット４３とを螺合することにより、座部６ａとフランジ部５２ａとが固定されるのである。この際、座部６ａとフランジ部５２ａとの間には、スペーサＳが介挿される。図４に示す如く、第一ねじ４１と鍔付きナット４３とによる座部６ａとフランジ部５２ａとの固定箇所は、座部６ａにおける右前・左前・右後・左後の四箇所に設けられる。 Next, the seat portion 6a of the seat body 6 is fixed to the flange portion 52a of the slide member 52 by the first screw 41. More specifically, as shown in FIG. 5, the flanged nut 43 is inserted from above into the fixing hole 6d opened through the seat portion 6a. Further, the first screw 41 is inserted from below into the insertion hole 52b opened in the flange portion 52a. Then, the seat portion 6a and the flange portion 52a are fixed by screwing the first screw 41 and the flanged nut 43. At this time, the spacer S is inserted between the seat portion 6a and the flange portion 52a. As shown in FIG. 4, the seat portion 6a and the flange portion 52a are fixed by the first screw 41 and the flanged nut 43 at four locations on the seat portion 6a: front right, front left, rear right, and rear left.

次に、カバー部材８の固定部８ｂを第二ねじ４２によってスライド部材５２のフランジ部５２ａに固定する。詳細には図５に示す如く、後部カバー８２に開口された固定孔８２ｂに第二ねじ４２を下方から挿入する。そして、第二ねじ４２をフランジ部５２ａに形成された雌ねじ孔５２ｃに螺入することにより、後部カバー８２とフランジ部５２ａとが固定されるのである。この際、前部カバー８１と後部カバー８２とは互いに組付けられた状態でフランジ部５２ａに固定される。 Next, the fixing portion 8b of the cover member 8 is fixed to the flange portion 52a of the slide member 52 by the second screw 42. More specifically, as shown in FIG. 5, the second screw 42 is inserted from below into the fixing hole 82b opened in the rear cover 82. Then, the rear cover 82 and the flange portion 52a are fixed by screwing the second screw 42 into the female screw hole 52c formed in the flange portion 52a. At this time, the front cover 81 and the rear cover 82 are fixed to the flange portion 52a in a state of being assembled to each other.

カバー部材８をフランジ部５２ａに組付ける際には、図５に示す如く、前部カバー８１の固定部８１ａと、後部カバー８２における前側の固定孔８２ｂとの重畳部分が、第二ねじ４２によりフランジ部５２ａに組付けられる。この際、固定部８１ｂに開口された固定孔８１ｂに第二ねじ４２が挿入される。図４に示す如く、第二ねじ４２による固定部８ｂとフランジ部５２ａとの固定箇所は、カバー部材８における右前・左前・右後・左後の四箇所（各固定部８ｂの前後二箇所）に設けられる。 When assembling the cover member 8 to the flange portion 52a, as shown in FIG. 5, the overlapping portion between the fixing portion 81a of the front cover 81 and the front fixing hole 82b in the rear cover 82 is formed by the second screw 42. It is assembled to the flange portion 52a. At this time, the second screw 42 is inserted into the fixing hole 81b opened in the fixing portion 81b. As shown in FIG. 4, the fixing portion 8b and the flange portion 52a by the second screw 42 are fixed at four locations on the cover member 8: front right, front left, rear right, and rear left (two front and rear locations of each fixing portion 8b). It is provided in.

本実施形態に係る椅子１によれば、カバー部材８の固定部８ｂにおける第一ねじ４１と対向する部分に、カバー部材８を貫通する貫通孔８ｃが開口されている。このため、上記の如くカバー部材８とフランジ部５２ａとを組付けた際には、図４に示す如く貫通孔８ｃを介して第一ねじ４１が下方に露出する。これにより、椅子１において座体６の交換やメンテナンスの際は、作業者が下方から第一ねじ４１を緩めるだけで座体６をガイド機構５から取り外すことができる。即ち、本実施形態に係る椅子１によれば、ガイド機構５からカバー部材８を取り外すことなく、簡易な作業でガイド機構５と座体６との連結を解除できるのである。 According to the chair 1 according to the present embodiment, a through hole 8c penetrating the cover member 8 is opened in a portion of the fixing portion 8b of the cover member 8 facing the first screw 41. Therefore, when the cover member 8 and the flange portion 52a are assembled as described above, the first screw 41 is exposed downward through the through hole 8c as shown in FIG. As a result, when replacing or maintaining the seat body 6 in the chair 1, the operator can remove the seat body 6 from the guide mechanism 5 simply by loosening the first screw 41 from below. That is, according to the chair 1 according to the present embodiment, the connection between the guide mechanism 5 and the seat body 6 can be released by a simple operation without removing the cover member 8 from the guide mechanism 5.

また、本実施形態においては貫通孔８ｃの内側に第一ねじ４１が収容される構成であるため、作業者が貫通孔８ｃを手探りで確認することで、第一ねじ４１による固定箇所を認識することができる。つまり、作業者がカバー部材８の下方から覗き込んで第一ねじ４１による固定箇所を探す必要がなく、簡単に第一ねじ４１を操作することが可能となる。 Further, in the present embodiment, since the first screw 41 is housed inside the through hole 8c, the operator recognizes the fixed portion by the first screw 41 by groping for the through hole 8c. be able to. That is, it is not necessary for the operator to look into the cover member 8 from below to search for the fixing location by the first screw 41, and the first screw 41 can be easily operated.

また、椅子１の通常の使用時において、第一ねじ４１は貫通孔８ｃの内側に位置するため、下方から覗き込まない限りは外部から視認されることがない。即ち、第一ねじ４１による固定部分は通常時には見えることがないため、椅子１のデザイン性を損なうことがない。 Further, in the normal use of the chair 1, since the first screw 41 is located inside the through hole 8c, it cannot be visually recognized from the outside unless it is viewed from below. That is, since the fixed portion by the first screw 41 is not normally visible, the design of the chair 1 is not impaired.

本実施形態に係る椅子１において、カバー部材８は前部カバー８１と後部カバー８２とに分割可能に構成される。これにより、ガイド機構５に対して別々の方向（前後それぞれの方向）から前部カバー８１と後部カバー８２とを組付けることができるため、カバー部材８を容易に組付けることが可能となる。なお、カバー部材８を三つ以上の部材に分割する構成としても良い。 In the chair 1 according to the present embodiment, the cover member 8 is configured to be divisible into a front cover 81 and a rear cover 82. As a result, the front cover 81 and the rear cover 82 can be assembled to the guide mechanism 5 from different directions (front and rear directions), so that the cover member 8 can be easily assembled. The cover member 8 may be divided into three or more members.

前部カバー８１と後部カバー８２とを組付けた際には、前部カバー８１により後部カバー８２の切り欠き部８２ａが閉塞される。そして、切り欠き部８２ａによりカバー部材８の底部に挿通孔８ａが形成され、挿通孔８ａに脚柱４が挿通される。本実施形態によれば上記の如く構成することにより、床面Ｆに固定した脚柱４にガイド機構５及び座体６を組付けた後でも、カバー部材８を容易にガイド機構５のフランジ部５２ａに組付けることができる。即ち、ガイド機構５及び座体６を組付けた脚柱４を、後部カバー８２における切り欠き部８２ａの内側に入れた状態で、前部カバー８１と後部カバー８２とを組み合わせることにより、脚柱４をカバー部材８の挿通孔８ａに挿通させることができる。また、カバー部材８において挿通孔８ａの大きさを最小限とすることにより、椅子１のデザイン性を向上させることができる。 When the front cover 81 and the rear cover 82 are assembled, the cutout portion 82a of the rear cover 82 is closed by the front cover 81. Then, an insertion hole 8a is formed in the bottom of the cover member 8 by the cutout portion 82a, and the pedestal 4 is inserted into the insertion hole 8a. According to the present embodiment, by configuring as described above, the cover member 8 can be easily attached to the flange portion of the guide mechanism 5 even after the guide mechanism 5 and the seat body 6 are assembled to the pedestal 4 fixed to the floor surface F. It can be assembled to 52a. That is, the pedestal 4 to which the guide mechanism 5 and the seat body 6 are assembled is inserted inside the notch 82a in the rear cover 82, and the pedestal is combined with the front cover 81 and the rear cover 82. 4 can be inserted into the insertion hole 8a of the cover member 8. Further, by minimizing the size of the insertion hole 8a in the cover member 8, the design of the chair 1 can be improved.

また、本実施形態に係る椅子１においては、前部カバー８１の固定部８１ａと、後部カバー８２における前側の固定孔８２ｂとの重畳部分が、第二ねじ４２によりフランジ部５２ａに組付けられる。これにより、前部カバー８１と後部カバー８２とをそれぞれ別々にフランジ部５２ａに組付ける必要がなくなる。即ち、カバー部材８の組付け効率を向上させるとともに、固定具等の部品点数を削減し、椅子１の重量及びコストを抑制することが可能となる。 Further, in the chair 1 according to the present embodiment, the overlapping portion of the fixing portion 81a of the front cover 81 and the fixing hole 82b on the front side of the rear cover 82 is assembled to the flange portion 52a by the second screw 42. This eliminates the need to separately assemble the front cover 81 and the rear cover 82 to the flange portion 52a. That is, it is possible to improve the assembling efficiency of the cover member 8, reduce the number of parts such as fixtures, and reduce the weight and cost of the chair 1.

１椅子２机
３ベース体４脚柱
４ｂ下端部４ｔ上端部
５ガイド機構６座体
６ａ座部６ｂ背もたれ部
６ｃ下面６ｄ固定孔
８カバー部材８ａ挿通孔
８ｂ固定部８ｃ貫通孔
４１第一ねじ（第一固定具）
４２第二ねじ（第二固定具）
４３鍔付きナット５１支持部材
５２スライド部材５２ａフランジ部
５２ｂ挿通孔５２ｃ雌ねじ孔
５４レール部５６レールギヤ
８１前部カバー８１ａ固定部
８１ｂ固定孔８２後部カバー
８２ａ切り欠き部８２ｂ固定孔
ＢボルトＦ床面
Ｓスペーサ
1 chair 2 desk
3 base body 4 pedestal
4b lower end 4t upper end
5 Guide mechanism 6 Seat
6a Seat 6b Backrest
6c Bottom surface 6d Fixing hole
8 Cover member 8a Insertion hole
8b Fixing part 8c Through hole 41 First screw (first fixing tool)
42 Second screw (second fixture)
43 Flange nut 51 Support member 52 Slide member 52a Flange part 52b Insertion hole 52c Female screw hole 54 Rail part 56 Rail gear 81 Front cover 81a Fixing part 81b Fixing hole 82 Rear cover 82a Notch 82b Fixing hole
B bolt F floor
S spacer

Claims

A pedestal whose lower end is fixed to the floor surface and whose upper end extends upward, a guide mechanism provided at the upper end of the pedestal, a seat body supported on the upper surface of the guide mechanism, and the above. A chair provided with a cover member that covers the guide mechanism on the lower side of the seat body.
The guide mechanism includes a flange portion fixed to the lower surface of the seat body.
The seat body and the flange portion are assembled by the first fixture, and the seat body and the flange portion are assembled by the first fixture.
The cover member and the flange portion are assembled by a second fixture, and the cover member and the flange portion are assembled by a second fixture.
The cover member is opened with a through hole that penetrates the cover member.
A chair in which the first fixture is exposed through the through hole when the cover member and the flange portion are assembled.

The chair according to claim 1, wherein the cover member can be divided into at least two parts.

The cover member is formed in a bottomed cylindrical shape.
The cover member can be divided into a first cover member and a second cover member.
A notch is formed at the bottom of at least one of the first cover member and the second cover member.
When the first cover member and the second cover member are assembled, the edge of the notch is closed, and an insertion hole through which the pedestal is inserted is formed at the bottom of the cover member. The chair according to claim 1.

The chair according to claim 3, wherein the overlapping portion of the first cover member and the second cover member is assembled to the flange portion by the second fixture.