JP2010004946A

JP2010004946A - Chair

Info

Publication number: JP2010004946A
Application number: JP2008164832A
Authority: JP
Inventors: Ryo Igarashi; 僚五十嵐; Hiroaki Tsukiji; 宏明築地
Original assignee: Okamura Corp
Current assignee: Okamura Corp
Priority date: 2008-06-24
Filing date: 2008-06-24
Publication date: 2010-01-14

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair for which the exposed part of a back rod is easily covered with a single back rod cover in a simple structure and the back rod cover is easily positioned and mounted without executing any work to the back rod. <P>SOLUTION: The back rod cover 15 includes an upper cover part 16 which is capable of covering a front direction bend part 11a extended downwards from a back pad 12 in the back rod 11 and includes an almost horizontal upper piece 16a at the upper end, and a lower cover part 18 which is extended to the front from the lower end of the upper cover part 16 and is capable of covering the front direction part of the back rod 11. By fitting the back rod 11 to an insertion hole 21 provided on the upper piece 16a and press-fitting the opening of the front end part of the back rod 11 to an insertion piece 25 provided on a lower direction piece 18a at the front end part of the lower cover part 18, the back rod cover 15 is mounted on the exposed part of the back rod 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、座体の後部より起立し、かつ上部に背当てが取付けられた背杆の下部における露出部を、カバーにより覆ってなる椅子に関する。 TECHNICAL FIELD The present invention relates to a chair that stands up from the rear part of a seat body and covers an exposed part of a lower part of a backrest, to which a backrest is attached at an upper part, with a cover.

このような、背杆の下部における露出部を、カバーにより覆ってなる椅子は公知である(例えば特許文献１及び２参照)。
特開平１１−３４６８６４号公報特許第３００８２６３号公報 Such a chair in which the exposed portion in the lower part of the backpack is covered with a cover is known (see, for example, Patent Documents 1 and 2).
JP 11-346864 A Japanese Patent No. 3008263

上記特許文献１に記載されている椅子においては、座体の後部より起立する左右の背杆(背フレーム)の下部を、左右別々のカバーにより覆い、かつねじにより背杆に固定して、カバーの位置ずれを防止しているので、部品点数が増えるとともに、カバーの取付けにも手間がかかる。
特許文献２に記載の椅子においては、背杆の下部を、前後別々のカバーにより覆っているので、上記と同様、部品点数が増える。また、前後のカバー同士を互いに係着する係合手段を設け、かつ前後のカバーを背杆に位置決めして取付けるための係合孔や係止爪を、背杆及び前後のカバーに設けているので、前後のカバーの構造が複雑化するとともに、背杆に対する加工や取付工数が増え、コスト高となる。 In the chair described in Patent Document 1, the lower portions of the left and right dorsal fins (back frame) that stand up from the rear part of the seat are covered with separate left and right covers and fixed to the dorsal fins with screws. Is prevented, and the number of parts is increased and it takes time to install the cover.
In the chair described in Patent Document 2, since the lower part of the back is covered with separate front and rear covers, the number of parts increases as described above. Also, engaging means for engaging the front and rear covers with each other are provided, and engagement holes and locking claws for positioning and attaching the front and rear covers to the back are provided on the back and the front and rear covers. As a result, the structure of the front and rear covers becomes complicated, and the processing and mounting man-hours for the dorsal fin increase and the cost increases.

本発明は、上記問題点に鑑みてなされたもので、背杆の下部における露出部を、構造の簡単な単一のカバーにより、容易に覆うことができ、かつ背杆に何らの加工を施すことなく、カバーを、容易に位置決めして装着しうるようにした椅子を提供することを目的としている。 The present invention has been made in view of the above problems, and the exposed portion of the lower portion of the backpack can be easily covered with a single cover having a simple structure, and any processing is applied to the backpack. An object of the present invention is to provide a chair in which a cover can be easily positioned and mounted.

本発明によると、上記課題は、次の各項のようにして解決される。
（１）座体の後部より起立し、上部に背当てが取付けられた背杆における前記背当てより下方の露出部を、背杆カバーにより覆ってなる椅子において、前記背杆カバーを、前記背杆における背当てから下方に延出する前向屈曲部を覆いうる、上端にほぼ水平の上片を有する上部カバー部と、この上部カバー部の下端より前向きに延出し、前記背杆における前向屈曲部より前方に延出する前向部分を覆いうる下部カバー部とを備えるものとし、前記上片に設けた挿通孔に前記背杆を嵌合し、かつ背杆の前端面と前記下部カバー部の前端部に設けた下向片の後面とのいずれか一方に設けた開口部に、同じく他方に設けた差込み部を圧嵌することにより、背杆カバーを前記背杆の露出部に装着する。 According to the present invention, the above-mentioned problems are solved as follows.
(1) In a chair that stands up from the rear portion of the seat body and covers an exposed portion below the backrest in a backrest with a backrest attached to the upper portion thereof with a backrest cover, the backrest cover is An upper cover portion having a substantially horizontal upper piece at the upper end, which can cover a forward bent portion extending downward from the backrest of the heel, and extending forward from the lower end of the upper cover portion. A lower cover portion that can cover a forward portion extending forward from the bent portion, and the back cover is fitted into an insertion hole provided in the upper piece, and the front end surface of the back cover and the lower cover Attach the dorsal cover to the exposed part of the dorsal part by press-fitting the insertion part provided on the other side into the opening part provided on either one of the rear surfaces of the downward facing pieces provided on the front end part of the part To do.

このような構成とすると、背杆を、構造の簡単な単一の背杆カバーにおける上部カバーの上片の挿入孔より挿し込むだけの簡単な作業で、背杆における背当てより下方の露出部を容易に覆うことができ、部品点数や取付工数が削減される。
また、背杆カバーは、背杆の前端面と下部カバー部の前端部に設けた下向片の後面との対向面のいずれか一方に設けた開口部に、他方に設けた差込み部を圧嵌することにより、位置決めされて装着されるので、背杆には、背杆カバーの取付けや位置決めのための加工を殆ど施す必要がない。 With such a configuration, the exposed portion below the backrest in the dorsal fin can be obtained by simply inserting the dorsal fin through the insertion hole in the upper piece of the upper cover in a single doubly-covered simple cover. Can be easily covered, and the number of parts and the number of mounting steps are reduced.
In addition, the back cover covers the opening provided on one of the opposing surfaces of the front end surface of the back cover and the rear surface of the downward facing piece provided on the front end portion of the lower cover portion, and presses the insertion portion provided on the other side. Since it is positioned and attached by fitting, the dorsal fin needs almost no processing for attaching or positioning the dorsal cover.

（２）上記(１)項において、上部カバー及び下部カバーを、背杆の前面と上面と左右両側面とを覆い、かつ後方と下方に開口するＵ字状断面とする。 (2) In the above item (1), the upper cover and the lower cover have a U-shaped cross section that covers the front surface, the upper surface, and the left and right side surfaces of the dorsal fin and opens rearward and downward.

このような構成とすると、背杆の前向部分が長くても、上片の挿通孔より挿入した背杆の前向部を上向きに回動させて、下方より背杆カバー内に容易に挿入することができる。
また、挿通孔の大きさを大とする必要がないので、体裁がよくなる。 With such a configuration, even if the forward part of the dorsal fin is long, the forward part of the dorsal fin inserted through the insertion hole of the upper piece can be rotated upward and easily inserted into the dorsal cover from below can do.
Further, since it is not necessary to increase the size of the insertion hole, the appearance is improved.

（３）上記(１)または(２)項において、背杆を左右１対よりなるものとし、かつ背杆カバーを、前記両背杆における背当てから下方の前向屈曲部までの部分を左右に跨って覆いうる大きさの上部カバー部の両側部下端に、前記左右の背杆の前向部分を覆う左右１対の下部カバー部を連設したものとする。 (3) In the above item (1) or (2), the dorsal fin is made up of a pair of left and right sides, and the dorsal cover covers the part from the backrest to the downward bent portion on both sides It is assumed that a pair of left and right lower cover portions covering the forward portions of the left and right dorsal fins are continuously provided at the lower ends of both side portions of the upper cover portion having a size that can be covered.

このような構成とすると、背杆が左右１対よりなっていても、それらの露出部を、単一の背杆カバーにより容易に覆うことができる。
また、左右の背杆における背当てから下方の前向屈曲部までの部分が、左右に跨って、上部カバー部により覆われているので、椅子の見栄えがよくなる。 With such a configuration, even if the dorsal fin consists of a pair of left and right, those exposed portions can be easily covered with a single dorsal cover.
Moreover, since the part from the backrest in the left and right dorsal fins to the downward forward bent part is covered with the upper cover part across the left and right, the appearance of the chair is improved.

（４）上記(１)〜(３)項のいずれかにおいて、背杆がパイプよりなり、その前端部を開口部として、下部カバー部の前端部における下向片に設けた後方を向く差込み部に圧嵌する。 (4) In any one of the above items (1) to (3), the dorsal wall is made of a pipe, and the front end portion is used as an opening portion, and the insertion portion facing the rear provided on the downward piece at the front end portion of the lower cover portion Press fit.

このような構成とすると、背杆に何ら加工を施すことなく、これに、背杆カバーを、位置決めして容易に装着することができる。 With such a configuration, the back cover can be easily positioned and attached to the back without any processing on the back.

（５）上記(１)〜(４)項のいずれかにおいて、開口部に差込み部を圧嵌したとき、上部カバー部における上片の上面が、背当ての下面に当接するようにする。 (5) In any one of the above items (1) to (4), when the insertion portion is press-fitted into the opening, the upper surface of the upper piece in the upper cover portion is brought into contact with the lower surface of the backrest.

このような構成とすると、装着後の背杆カバーが安定し、上下方向にがたつくことがない。 With such a configuration, the back cover after mounting is stable and does not rattle in the vertical direction.

（６）上記(１)〜(５)項のいずれかにおいて、上部カバー部における上片の後端に、背当ての下端部の後面に当接する起立片を突設する。 (6) In any one of the above items (1) to (5), an upright piece that abuts on the rear surface of the lower end portion of the backrest is provided on the rear end of the upper piece in the upper cover portion.

このような構成とすると、装着後の背杆カバーが、前後方向にがたつくのが防止される。
また、背当てから下方に延出する前向屈曲部と背当ての下端部の後面とを、単一の背杆カバーにおける上部カバー部により連続して覆いうるので、椅子の意匠性及び見栄えが向上する。 With such a configuration, it is possible to prevent the back cover after mounting from shaking in the front-rear direction.
In addition, since the forward bent portion extending downward from the backrest and the rear surface of the lower end of the backrest are continuously covered by the upper cover portion of the single back cover, the design and appearance of the chair are improved. improves.

（７）上記(１)〜(６)項のいずれかにおいて、上片を、背当ての下面にねじ止めする。 (7) In any one of the above items (1) to (6), the upper piece is screwed to the lower surface of the backrest.

このような構成とすると、背杆カバーに下方及び前向きの強い力が加わっても、これが背杆より外れる方向に移動する恐れがない。 With such a configuration, even if a strong downward and forward force is applied to the dorsal cover, there is no fear that it will move away from the dowel.

（８）上記(１)〜(７)項のいずれかにおいて、上部カバー部の裏面に、上端が上片の下面に接続された左右複数の縦リブを設ける。 (8) In any one of the above items (1) to (7), a plurality of left and right vertical ribs whose upper ends are connected to the lower surface of the upper piece are provided on the back surface of the upper cover portion.

このような構成とすると、上部カバー部における上片の下方の裏面の隅部が、複数の縦リブにより補強され、その部分の曲げ強度が大となるので、大きな曲げ荷重が加わる背杆の前向屈曲部を、上部カバー部により補強することができる。 With such a configuration, the corner portion of the lower surface of the upper cover portion below the upper piece is reinforced by a plurality of vertical ribs, and the bending strength of that portion is increased. The direction bent portion can be reinforced by the upper cover portion.

本発明によれば、背杆を、構造の簡単な単一の背杆カバーにおける上部カバーの上片の挿入孔より挿し込むだけの簡単な作業で、背杆における背当てより下方の露出部を容易に覆うことができ、部品点数や取付工数が削減される。
また、背杆カバーは、背杆の前端面と下部カバー部の前端部に設けた下向片の後面との対向面のいずれか一方に設けた開口部に、他方に設けた差込み部を圧嵌することにより、位置決めされて装着されるので、背杆には、背杆カバーの取付けや位置決めのための加工を殆ど施す必要がない。 According to the present invention, the exposed portion below the backrest of the dorsal fin can be formed by simply inserting the dorsal fin from the insertion hole of the upper piece of the upper cover in a single dowel cover with a simple structure. It can be easily covered, reducing the number of parts and the number of mounting steps.
In addition, the back cover covers the opening provided on one of the opposing surfaces of the front end surface of the back cover and the rear surface of the downward facing piece provided on the front end portion of the lower cover portion, and presses the insertion portion provided on the other side. Since it is positioned and attached by fitting, the dorsal fin needs almost no processing for attaching or positioning the dorsal cover.

以下、本発明の実施形態を、図面に基づいて説明する。
図１は、本発明の椅子の側面図、図２は、同じく後方斜視図で、椅子１は、脚体２と、座体３と、背凭れ４とを備えている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of the chair of the present invention, FIG. 2 is a rear perspective view, and the chair 1 includes a leg body 2, a seat body 3, and a backrest 4.

脚体２は、内部に高さ調節用のガススプリング(図示略)が収容された筒状の脚柱５と、その下部外周面に固着された、先端にキャスタ６を有する放射方向を向く５本の脚杆７とからなり、脚柱５の上端には、前後方向を向く支基８より垂下する支持杆８aが、水平回動可能に取付けられている。 The leg 2 has a cylindrical leg 5 in which a gas spring (not shown) for height adjustment is accommodated, and a radial 5 having a caster 6 at the tip, which is fixed to the outer peripheral surface of the leg 5. A supporting rod 8a that is suspended from a support base 8 facing in the front-rear direction is attached to the upper end of the column 5 so as to be horizontally rotatable.

座体３は、支基８に固着された合成樹脂製の座板９と、その上面に取付けられたクッション体１０とからなり、座板９は、上記支基８の上面に取付けられている。 The seat body 3 includes a synthetic resin seat plate 9 fixed to the support base 8 and a cushion body 10 attached to the upper surface thereof. The seat plate 9 is attached to the upper surface of the support base 8. .

背凭れ４は、金属パイプの中間部を、前向屈曲部１１aを介して、側面視前向くの字状に屈曲して形成された左右１対の背杆１１、１１と、それらの上半部に取付けられた背当て１２とからなり、背当て１２は、合成樹脂製の背板１３の前面にクッション材１４を取付けてなっている。 The backrest 4 is composed of a pair of left and right dorsal fins 11 and 11 formed by bending an intermediate portion of a metal pipe into a letter-shape facing forward in a side view through a forward bent portion 11a, and upper half portions thereof. The backrest 12 is attached to the front portion, and the backrest 12 has a cushion material 14 attached to the front surface of a back plate 13 made of synthetic resin.

左右の背杆１１、１１における背当て１２よりも下方の露出部、すなわち前向屈曲部１１aから支基８に向かう前向部分には、合成樹脂製の背杆カバー１５が、次のようにして装着されている。 A synthetic resin back cover 15 is provided on the left and right dorsal fins 11, 11 below the backrest 12, that is, on the forward portion from the forward bent portion 11 a toward the support base 8 as follows. Is installed.

図３〜図６に示すように、背杆カバー１５は、左右の背杆１１、１１の外側寸法よりも左右幅が大きく、かつ左右の背杆１１、１１における前向屈曲部１１aから背当て１２の下端までの露出部を、左右に跨って覆いうる上下寸法の側面視前向Ｌ字状の上部カバー部１６と、この上部カバー部１６の下端の湾曲部１７の前端の両側部より、斜め前下方に向かって互いに平行に延出し、左右の背杆１１、１１の前向屈曲部１１a、１１aよりも前方の前向部分を覆いうる左右１対の下部カバー部１８、１８とを備え、各下部カバー１８の前端には、背杆１１の前端を覆いうる下向片１８aが連設されている。 As shown in FIGS. 3 to 6, the back cover 15 has a lateral width larger than the outer dimensions of the left and right dorsal fins 11, 11, and is backed from the forward bent portion 11 a in the left and right dorsal fins 11, 11. From the upper cover part 16 having a L-shaped front-facing L-shape in the vertical direction that can cover the exposed part up to the lower end of 12, and both sides of the front end of the curved part 17 at the lower end of the upper cover part 16, A pair of left and right lower cover portions 18, 18 that extend in parallel with each other toward the diagonally downward front and that can cover the forward-facing portions of the left and right dorsal fins 11, 11 in front of the forward bent portions 11 a, 11 a. A downward piece 18 a that can cover the front end of the backpack 11 is connected to the front end of each lower cover 18.

上部カバー部１６と湾曲部１７の裏面には、上端が上部カバー部１６における上端の後方を向く上片１６aの下面に接続された左右複数の縦リブ１９を突設して、上部カバー部１６の曲げ強度を高めてある。 On the back surfaces of the upper cover portion 16 and the curved portion 17, a plurality of left and right vertical ribs 19 connected to the lower surface of the upper piece 16 a whose upper end faces the rear of the upper end of the upper cover portion 16 are projected. The bending strength of is increased.

上部カバー部１６、湾曲部１７、及び下部カバー部１８は、それぞれ、左右の背杆１１の露出部における前面と上面と左右両側面とを覆いうるＵ字状断面とされ、それらの裏面には、左右の背杆１１の露出部へ嵌合しうる嵌合溝２０、２０が、連続して形成されている。上部カバー部１６のほぼ水平をなす上片１６aの両側部には、左右の背杆１１を上方より挿入可能な挿通孔２１、２１が、両嵌合溝２０の上端と連通するようにして穿設されている。
また、上部カバー部１６の上片１６aの後縁には、背板１３の下端部の後面中央に形成された凹部２２に適正に嵌まり込む起立片２３が突設されている。 The upper cover portion 16, the curved portion 17, and the lower cover portion 18 each have a U-shaped cross section that can cover the front surface, the upper surface, and the left and right side surfaces of the exposed portion of the left and right dorsal fins 11, and on the back surfaces thereof. The fitting grooves 20, 20 that can be fitted to the exposed portions of the left and right dorsal fins 11 are formed continuously. Insertion holes 21 and 21 through which the left and right dorsal fins 11 can be inserted from above are formed in both side portions of the upper piece 16 a that is substantially horizontal to the upper cover portion 16 so as to communicate with the upper ends of both fitting grooves 20. It is installed.
In addition, an upright piece 23 is provided on the rear edge of the upper piece 16a of the upper cover portion 16 so as to fit properly in the concave portion 22 formed at the center of the rear surface of the lower end portion of the back plate 13.

左右の下部カバー部１８における前端の下向片１８aの後面と前端部の裏面には、左右２個の縦リブ状の挟持片２４、２４と、それより前後寸法の長い差込片２５とが、差込片２５の後端部に形成された、背杆１１の前端部が圧嵌可能な上下寸法の差込み部２５aが、両ストッパ片２４間において、それらの後端よりも後方に突出するようにして、下向きに突設されている。 The left and right vertical rib-shaped sandwiching pieces 24, 24 and the insertion piece 25 having a longer front-rear dimension are provided on the rear surface of the front-facing downward piece 18a and the back surface of the front end portion of the left and right lower cover portions 18. An insertion portion 25a formed on the rear end portion of the insertion piece 25 and having a vertical dimension in which the front end portion of the dorsal fin 11 can be press-fitted protrudes rearward from both rear ends between the stopper pieces 24. In this way, it protrudes downward.

左右の背杆１１に背杆カバー１５を装着するには、まず、背杆１１の前向部分が下傾するように背凭れ４を前傾させるか、もしくは、上部カバー部１６が下方となるように背杆カバー１５全体を起立させて、背杆カバー１５における上部カバー部１６の左右の挿通孔２１より、両背杆１１を前向屈曲部１１a付近まで挿入したのち、背杆１１または下部カバー部１８を互いに近接する方向に回動させて、下部カバー部１８の嵌合溝２０内に背杆１１を下方より遊嵌する。 In order to attach the dorsal cover 15 to the left and right dorsal fins 11, first, the backrest 4 is tilted forward so that the forward portion of the dorsal fin 11 tilts downward, or the upper cover portion 16 is downward. Thus, the dorsal fin cover 15 as a whole is erected and the dorsal fins 11 are inserted from the left and right insertion holes 21 of the upper cover portion 16 to the vicinity of the forward bent portion 11a. The cover portion 18 is rotated in a direction close to each other, and the dowel 11 is loosely fitted into the fitting groove 20 of the lower cover portion 18 from below.

ついで、図５及び断面図である図６に示すように、左右の背杆１１の前端開口部に、左右の下部カバー部１８における差込片２５の差込み部２５aを、背杆１１の前端部の両側面が、左右の挟持片２４により挟持されるまで圧嵌する。このようにして、背杆１１の前端部に差込み部２５aに圧嵌すると、上部カバー部１６の上片１６aが、背当て１２の下面に当接するとともに、起立片２３が、背板１３の後面下部の凹部２２に嵌まり込む。従って、背杆カバー１５の装着後において、これが前後及び上下方向に動くのが防止される。 Next, as shown in FIG. 5 and FIG. 6, which is a cross-sectional view, the insertion portion 25 a of the insertion piece 25 in the left and right lower cover portions 18 is connected to the front end opening of the left and right dorsal fins 11. The both side surfaces are press-fitted until they are clamped by the left and right clamping pieces 24. In this way, when the front end portion of the backpack 11 is press-fitted to the insertion portion 25a, the upper piece 16a of the upper cover portion 16 abuts the lower surface of the backrest 12, and the standing piece 23 is the rear surface of the back plate 13. It fits into the lower recess 22. Therefore, after the back cover 15 is mounted, it is prevented from moving back and forth and up and down.

ついで、上部カバー部１６の上片１６aを、背当て１２の下面に、上片１６aの下方より挿入した左右２個の止めねじ２６により固定すれば、背杆カバー１５の取付けは完了し、左右の背杆１１における背当て１２より露出する部分の前面、上面、及び左右の両側面が、背杆カバー１５により体裁よく覆われる。 Next, if the upper piece 16a of the upper cover portion 16 is fixed to the lower surface of the backrest 12 with the two left and right set screws 26 inserted from below the upper piece 16a, the attachment of the back cover 15 is completed, The front surface, the upper surface, and the left and right side surfaces of the portion exposed from the back pad 12 of the back cover 11 are covered with the back cover 15 in a good appearance.

このように、左右の背杆１１を、比較的構造の簡単な合成樹脂よりなる単一の背杆カバー１５内に、上方より挿入するだけの簡単な作業で、左右の背杆１１における背当て１２より下方の露出部を容易に覆うことができるので、部品点数や取付工数が削減される。 In this way, the back support of the left and right dorsal fins 11 can be achieved by simply inserting the left and right dorsal fins 11 into the single dovetail cover 15 made of a synthetic resin having a relatively simple structure from above. Since the exposed part below 12 can be easily covered, the number of parts and the number of mounting steps are reduced.

また、背杆１１に、背杆カバー１５取付用の加工を何ら施す必要がないだけでなく、背杆１１の前端開口部を、下部カバー部１８の前端部下面の差込片２５に圧嵌することにより、背杆カバー１５を位置決めして装着しているので、背杆１１に、位置決め用の加工を施す必要もない。 Further, it is not necessary to perform any processing for attaching the back cover 15 to the back cover 11, and the front end opening portion of the back cover 11 is press-fitted to the insertion piece 25 on the lower surface of the front end portion of the lower cover portion 18. By doing so, since the dorsal fin cover 15 is positioned and attached, it is not necessary to perform positioning processing on the dorsal fin 11.

さらに、背杆カバー１５の上部の起立片２３は、背板１３の後面下部に当接し、かつ上部カバー部１６の裏面は、複数の縦リブ１９により補強され、曲げ強度が大となっているので、大きな曲げ荷重が加わる背杆１１の前向屈曲部１１aを、上部カバー部１６により補強することができる。 Further, the upright piece 23 on the upper portion of the back cover 15 abuts on the lower rear surface of the back plate 13, and the back surface of the upper cover portion 16 is reinforced by a plurality of vertical ribs 19 to increase the bending strength. Therefore, the forward bent portion 11 a of the dorsal fin 11 to which a large bending load is applied can be reinforced by the upper cover portion 16.

しかも、上記のように、起立片２３を背板１３の下端部の後面に当接させると、装着後の背杆カバー１５が前後方向にがたつくのが防止されるとともに、背当て１２から下方に延出する前向屈曲部１１aと背板１３の下端部の後面とが、単一の背杆カバー１５における上部カバー部１６により連続して覆われるので、椅子の意匠性及び見栄えが向上する。 Moreover, as described above, when the standing piece 23 is brought into contact with the rear surface of the lower end portion of the back plate 13, the back cover 15 after being mounted is prevented from rattling in the front-rear direction, and further downward from the back support 12. Since the extending forward bent portion 11a and the rear surface of the lower end portion of the back plate 13 are continuously covered by the upper cover portion 16 of the single back cover 15, the design and appearance of the chair are improved.

なお、上述したように、装着後の背杆カバー１５は、前後及び上下方向に移動するのが防止されているので、止めねじ２６による背当て１２の下面へのねじ止め作業を、省略することもある。
また、上記実施形態では、背杆１１の前端部を、下部カバー部１８の下向片１８aの後面に設けた差込み部２５aに圧嵌しているが、それとは反対に、差込み部が突設された塞ぎ片等を、背杆１１の前端に固着し、この差込み部を、下向片１８aの後面に設けた、後方に開口する開口部に圧嵌するようにしてもよい。 As described above, since the back cover 15 after mounting is prevented from moving in the front-rear and up-down directions, the screwing operation to the lower surface of the backrest 12 with the set screw 26 is omitted. There is also.
Moreover, in the said embodiment, although the front-end part of the dorsal fin 11 is press-fit in the insertion part 25a provided in the rear surface of the downward piece 18a of the lower cover part 18, on the contrary, an insertion part protrudes. The closed piece or the like may be fixed to the front end of the dorsal fin 11, and this insertion part may be press-fitted into an opening part provided on the rear surface of the downward piece 18a and opened rearward.

さらに、上部カバー部１６の上片１６aに突設した起立片２３は、省略して実施することもある。 Further, the standing piece 23 protruding from the upper piece 16a of the upper cover portion 16 may be omitted.

図７〜図１１に示すように、上記の背杆カバー１５が装着された背凭れ４における左右の背杆１１は、支基８の後部の後下方を向く傾斜突部８bの下面における斜め後上方に向かって傾斜する傾斜面２７に、板金よりなる挟持部材２８により、次のようにして取付けられている。 As shown in FIGS. 7 to 11, the left and right dorsal fins 11 in the backrest 4 to which the above-described dorsal cover 15 is attached are obliquely rearward on the lower surface of the inclined protrusion 8 b facing the rear lower side of the rear part of the support base 8. It is attached to the inclined surface 27 inclined upward by a clamping member 28 made of sheet metal as follows.

挟持部材２８における方形をなす基板２８aの左右両側部には、左右の背杆１１の下半部の外周面を摺動可能に保持可能なＵ字状断面の挟持部２８b、２８bが、また、両挟持部２８a間において基板２８aの上下の端縁には、支基８における傾斜突部８bの上下の面に遊嵌可能な上向片２８c、２８cが、それぞれプレス等により一体的に形成されている。 On both the left and right sides of the rectangular substrate 28a in the clamping member 28, there are also U-shaped sandwiching portions 28b, 28b that can slidably hold the outer peripheral surfaces of the lower half portions of the left and right dorsal fins 11, respectively. Upward pieces 28c and 28c that can be loosely fitted to the upper and lower surfaces of the inclined protrusion 8b of the support base 8 are integrally formed by pressing or the like at the upper and lower edges of the substrate 28a between the both sandwiching portions 28a. ing.

挟持部材２８の基板２８aの中央部に穿設された通孔２９には、下端部に操作つまみ３０が相対回転不能に固嵌された締付けねじ３１が挿通され、この締付けねじ３１は、支基８の傾斜突部８bを貫通して、その上面に溶接されたナット３２に螺合されている。
締付けねじ３１の上端には、抜け止めワッシャ３３がボルト３４により固定され、締付けねじ３１を最大限緩めても、支基８の傾斜突部８bより抜け外れることのないようにしてある。 A tightening screw 31 having an operation knob 30 fixedly fitted to the lower end portion thereof so as not to be relatively rotatable is inserted into a through hole 29 formed in the center portion of the substrate 28a of the clamping member 28. The tightening screw 31 is a support base. 8 is threaded into a nut 32 welded to the upper surface thereof.
A retaining washer 33 is fixed to the upper end of the tightening screw 31 by a bolt 34 so that it will not come off from the inclined protrusion 8b of the support base 8 even if the tightening screw 31 is loosened to the maximum.

挟持部材２８と支基８の傾斜突部８bとには、挟持部材２８の脱落防止手段３５が設けられている。この脱落防止手段３５は、挟持部材２８の基板２８aの後端部に穿設されたテーパ孔３６に下方より挿入され、かつ支基８の傾斜突部８bに穿設された通孔３７を貫通して上方に突出する皿ねじ３８と、皿ねじ３８に遊嵌された２枚の平ワッシャ３９、３９と、それらの間に縮設された圧縮コイルばね４０と、上位の平ワッシャ３９の上面を押圧するようにして、皿ねじ３８の上端部に螺合されたナット４１とからなっている。 On the clamping member 28 and the inclined protrusion 8b of the support base 8, a dropping prevention means 35 for the clamping member 28 is provided. The drop-off prevention means 35 is inserted from below into a tapered hole 36 drilled in the rear end of the substrate 28 a of the clamping member 28, and penetrates the through-hole 37 drilled in the inclined protrusion 8 b of the support base 8. Then, a countersunk screw 38 protruding upward, two flat washers 39, 39 loosely fitted to the countersunk screw 38, a compression coil spring 40 contracted between them, and the upper surface of the upper flat washer 39 And a nut 41 screwed into the upper end of the countersunk screw 38.

挟持部材２８は、圧縮コイルばね４０により、傾斜突部８bの傾斜面２７と当接する方向に常時付勢され、支基８の傾斜突部８bより脱落するのが防止されている。また、図１２に示すように、締付けねじ３１を緩めることにより、挟持部材２８を、圧縮コイルばね４０の圧縮範囲内において、傾斜突部８bの傾斜面２７より下方に離間させることができる。この際、上下の上向片２８cが、挟持部材２８の下方への移動をガイドをするとともに、締付けねじ３１回りに挟持部材２８が回動するのを防止する。 The clamping member 28 is always urged by the compression coil spring 40 in a direction in contact with the inclined surface 27 of the inclined protrusion 8 b, and is prevented from falling off from the inclined protrusion 8 b of the support base 8. In addition, as shown in FIG. 12, by loosening the tightening screw 31, the clamping member 28 can be separated below the inclined surface 27 of the inclined protrusion 8 b within the compression range of the compression coil spring 40. At this time, the upper and lower upward pieces 28 c guide the downward movement of the clamping member 28 and prevent the clamping member 28 from rotating around the clamping screw 31.

なお、上記操作つまみ３０と一体の締付けねじ３１、抜け止めワッシャ３３、ナット３４、挟持部材２８及びその脱落防止手段３５は、椅子の製造または組立工程等において予め支基８に組み付けられ、この状態で出荷される。 The tightening screw 31 integral with the operation knob 30, the retaining washer 33, the nut 34, the clamping member 28 and the drop-off preventing means 35 are assembled in advance to the support base 8 in the manufacturing or assembling process of the chair. Shipped in.

左右の背杆１１を支基８の傾斜突部８bに取付けるには、まず図７に示すように、締付けねじ３１を緩める方向に操作つまみ３０を回動操作し、これを挟持部材２８より離間させる。 In order to attach the left and right dorsal fins 11 to the inclined protrusions 8 b of the support base 8, first, as shown in FIG. 7, the operation knob 30 is rotated in the direction of loosening the tightening screw 31, and this is separated from the clamping member 28. Let

ついで、図８に示すように、左右の背杆１１及びそれに装着した背杆カバー１５の下部カバー部１８を、斜め後上方より、傾斜突部８bの傾斜面２７と挟持部材２８の左右の挟持部２８b、２８bとの間に形成された空間内に挿入し、図１０に示すように、両背杆１１の下半部と下部カバー部１８の上面を、挟持部２８bとカバー部１８の上面を傾斜突部８bの傾斜面２７とにより挟持する。この際、上述したように、圧縮コイルばね４０を圧縮させて挟持部材２８を下方に移動させると、挿入空間を広げることができるので、左右の背杆１１を、下部カバー部１８と共に簡単に挿入することができる。 Next, as shown in FIG. 8, the left and right dorsal fins 11 and the lower cover portion 18 of the dorsal fin cover 15 attached to the left and right dorsal fins 11 are sandwiched between the inclined surface 27 of the inclined protrusion 8 b and the holding member 28 from the upper rear side. 10 is inserted into the space formed between the portions 28b and 28b, and as shown in FIG. 10, the lower half of the dorsal fin 11 and the upper surface of the lower cover portion 18 are connected to the upper surfaces of the sandwiching portion 28b and the cover portion 18, respectively. Is held by the inclined surface 27 of the inclined protrusion 8b. At this time, as described above, if the compression coil spring 40 is compressed and the holding member 28 is moved downward, the insertion space can be expanded, so that the left and right dorsal fins 11 can be easily inserted together with the lower cover portion 18. can do.

ついで、操作つまみ３０の上面が挟持部材２８の基板２８aの下面に圧接するまで、締付けねじ３１を締め込むと、左右の背杆１１は、支基８における傾斜突部８bの傾斜面２７と挟持部材２８とにより挟持されて、支基８の傾斜突部８bに固定される。この際、挟持部材２８における左右の挟持部２８bの側端上部は、左右の下部カバー部１８内に位置し、外部に露呈するのが防止される(図１０参照)。 Next, when the tightening screw 31 is tightened until the upper surface of the operation knob 30 comes into pressure contact with the lower surface of the substrate 28a of the clamping member 28, the left and right dorsal fins 11 are clamped with the inclined surface 27 of the inclined protrusion 8b of the support base 8. It is clamped by the member 28 and fixed to the inclined protrusion 8 b of the support base 8. At this time, the upper side end portions of the left and right clamping portions 28b in the clamping member 28 are located in the left and right lower cover portions 18 and are prevented from being exposed to the outside (see FIG. 10).

また、支基８の傾斜突部８bの傾斜面２７に、挟持部材２８を、締付けねじ３１により締め付けると、その基板２８aの上下の上向片２８cが、傾斜突部８bの上下両面に嵌合されるので、背凭れ４及び挟持部材２８が締付けねじ３１回りの回動するのが防止される。
背杆１１の固定後において、操作つまみ３０を若干緩めて、背杆１１を、支基８の傾斜突部８bの傾斜面２７に沿って斜め上下方向にスライドさせることにより、背凭れ４の前後位置と上下位置とを同時に調節することができる。 Further, when the clamping member 28 is fastened to the inclined surface 27 of the inclined protrusion 8b of the support base 8 with the fastening screw 31, the upper and lower pieces 28c of the substrate 28a are fitted to the upper and lower surfaces of the inclined protrusion 8b. Therefore, the backrest 4 and the clamping member 28 are prevented from rotating around the fastening screw 31.
After the dorsal fin 11 is fixed, the operation knob 30 is slightly loosened, and the dorsal fin 11 is slid in the up and down direction along the inclined surface 27 of the inclined protrusion 8b of the support base 8, thereby The position and the vertical position can be adjusted simultaneously.

このように、支基８における傾斜突部８bの傾斜面２７に、挟持部材２８を、脱落防止手段３５により下方に移動可能に予め取付けておき、この挟持部材２８と傾斜突部８bの傾斜面２７との間に、背凭れ４の背杆１１を斜め後上方より挟入して、操作つまみ３０と一体の締付けねじ３１により固定するようにすると、支基８の傾斜突部８bへの背杆１１の取付けを、椅子の購入者が簡単に行いうるとともに、着脱も容易となる。 Thus, the clamping member 28 is attached in advance to the inclined surface 27 of the inclined protrusion 8b of the support base 8 so as to be movable downward by the drop-off preventing means 35, and the inclined surface of the holding member 28 and the inclined protrusion 8b. 27, when the dorsal fin 11 of the backrest 4 is inserted obliquely from above and is fixed by the fastening screw 31 integrated with the operation knob 30, the back of the support base 8 to the inclined projection 8b is fixed. The chair 11 can be easily attached by the purchaser of the chair and can be easily attached and detached.

従って、椅子を工場や倉庫等より出荷する際に、座体３と背凭れ４とを分離し、それらを別々に梱包して出荷することができ、梱包資材や荷姿が小さくなって、輸送効率が向上する。なお、締付けねじ３１に設けた抜け止めワッシャ３３や、それを固定するナット３４は、必ずしも必要ではなく、これらを省略して、例えば操作つまみ３０と一体をなす締付けねじ３１を、背凭れ４の取付時に後からナット３２に螺合するようにしてもよい。 Therefore, when the chair is shipped from a factory, warehouse, etc., the seat body 3 and the backrest 4 can be separated, and they can be packed and shipped separately. Efficiency is improved. Note that the retaining washer 33 provided on the tightening screw 31 and the nut 34 for fixing the same are not necessarily required. You may make it screw in the nut 32 later at the time of attachment.

また、脱落防止手段３５の圧縮コイルばね４０は、搬送時等において、挟持部材２８のがたつきを防止するためのものであるが、この圧縮コイルばね４０を省略し、単に挟持部材２８を、支基８の傾斜面２７に対し移動可能に取付けてもよい。 Further, the compression coil spring 40 of the drop-off preventing means 35 is for preventing rattling of the clamping member 28 at the time of transportation or the like, but the compression coil spring 40 is omitted, and the clamping member 28 is simply replaced by You may attach to the inclined surface 27 of the support base 8 so that a movement is possible.

本発明の椅子の側面図である。It is a side view of the chair of this invention. 同じく、後方斜視図である。Similarly, it is a rear perspective view. 背杆カバーの斜視図である。It is a perspective view of a back cover. 同じく、後下方より見た斜視図である。Similarly, it is the perspective view seen from the back lower part. 背杆に背杆カバーを装着した状態を後下方より見た斜視図である。It is the perspective view which looked at the state where the back cover was attached to the back cover from the lower back. 同じく、背杆カバー装着後の要部の拡大縦断側面図である。Similarly, it is an enlarged vertical side view of the main part after the dorsal fin cover is mounted. 支基への背杆取付前の要部の側面図である。It is a side view of the principal part before the back hook attachment to a support base. 同じく、背杆取付後の要部の側面図である。Similarly, it is a side view of the principal part after a back saddle attachment. 同じく、背杆取付後の状態を後下方より見た座体の要部の斜視図である。Similarly, it is the perspective view of the principal part of the seat body which looked at the state after backpack attachment from the back lower part. 図８のX-X線拡大横断端面図である。FIG. 9 is an enlarged cross-sectional end view taken along line X-X in FIG. 8. 図９のXI-XI線拡大縦断端面図である。It is the XI-XI line enlarged vertical end view of FIG. 同じく、操作つまみと一体の締付けねじを緩めて挟持部材を支基より離間させた状態の拡大縦断端面図である。Similarly, it is an enlarged vertical cross-sectional end view of a state in which the clamping screw integral with the operation knob is loosened and the clamping member is separated from the support base.

符号の説明Explanation of symbols

１椅子
２脚体
３座体
４背凭れ
５脚柱
６キャスタ
７脚杆
８支基
８a 支持杆
８b 傾斜突部
９座板
１０クッション体
１１背杆
１１a 前向屈曲部
１２背当て
１３背板
１４クッション材
１５背杆カバー
１６上部カバー部
１６a 上片
１７湾曲部
１８下部カバー部
１８a 下向片
１９縦リブ
２０嵌合溝
２１挿通孔
２２凹部
２３起立片
２４挟持片
２５差込片
２５a 差込み部
２６止めねじ
２７傾斜面
２８挟持部材
２８a 基板
２８b 挟持部
２８c 上向片
２９通孔
３０操作つまみ
３１締付けねじ
３２ナット
３３抜け止めワッシャ
３４ボルト
３５脱落防止手段
３６テーパ孔
３７通孔
３８皿ねじ
３９ワッシャ
４０圧縮コイルばね
４１ナット DESCRIPTION OF SYMBOLS 1 Chair 2 Leg body 3 Seat body 4 Backrest 5 Pillar 6 Castor 7 Leg rod 8 Support base 8a Support rod 8b Inclined protrusion 9 Seat plate 10 Cushion body 11 Back rod 11a Forward bending portion 12 Back support 13 Back plate 14 Cushion material 15 Back cover 16 Upper cover part 16a Upper piece 17 Curved part 18 Lower cover part 18a Downward piece 19 Vertical rib 20 Fitting groove 21 Insertion hole 22 Recess 23 Standing piece 24 Clamping piece 25 Insertion piece 25a Insertion part 26 Set screw 27 Inclined surface 28 Holding member 28a Substrate 28b Holding portion 28c Upward piece 29 Through hole 30 Operation knob 31 Tightening screw 32 Nut 33 Retaining washer 34 Bolt 35 Falling prevention means 36 Taper hole 37 Through hole 38 Countersunk screw 39 Washer 40 Compression coil spring 41 Nut

Claims

座体の後部より起立し、上部に背当てが取付けられた背杆における前記背当てより下方の露出部を、背杆カバーにより覆ってなる椅子において、
前記背杆カバーを、前記背杆における背当てから下方に延出する前向屈曲部を覆いうる、上端にほぼ水平の上片を有する上部カバー部と、この上部カバー部の下端より前向きに延出し、前記背杆における前向屈曲部より前方に延出する前向部分を覆いうる下部カバー部とを備えるものとし、前記上片に設けた挿通孔に前記背杆を嵌合し、かつ背杆の前端面と前記下部カバー部の前端部に設けた下向片の後面とのいずれか一方に設けた開口部に、同じく他方に設けた差込み部を圧嵌することにより、背杆カバーを前記背杆の露出部に装着したことを特徴とする椅子。 In a chair that stands up from the rear part of the seat body and covers an exposed part below the back pad in the back pad with a back pad attached to the upper part by a back cover,
An upper cover portion having a substantially horizontal upper piece at the upper end, which can cover a forward bent portion extending downward from the backrest of the backrest, and extending forward from the lower end of the upper cover portion. And a lower cover portion that can cover a forward portion extending forward from the forward bent portion of the dorsal fin, and the dowel is fitted into an insertion hole provided in the upper piece, and The dorsal cover is attached by press-fitting the insertion portion provided on the other side into the opening provided on one of the front end surface of the bag and the rear surface of the downward piece provided on the front end portion of the lower cover portion. A chair mounted on the exposed portion of the dorsal fin.

上部カバー及び下部カバーを、背杆の前面と上面と左右両側面とを覆い、かつ後方と下方に開口するＵ字状断面としてなる請求項１記載の椅子。 The chair according to claim 1, wherein the upper cover and the lower cover have a U-shaped cross section that covers the front surface, the upper surface, and the left and right side surfaces of the back and opens rearward and downward.

背杆を左右１対よりなるものとし、かつ背杆カバーを、前記両背杆における背当てから下方の前向屈曲部までの部分を左右に跨って覆いうる大きさの上部カバー部の両側部下端に、前記左右の背杆の前向部分を覆う左右１対の下部カバー部を連設したものとしてなる請求項１または２記載の椅子。 Both sides of the upper cover portion of a size capable of covering the portion from the backrest to the downward forward bent portion of the dorsal fin on the left and right sides, with the dorsal fin consisting of a pair of left and right sides The chair according to claim 1 or 2, wherein a pair of left and right lower cover portions covering the forward portion of the left and right dorsal fins are connected to the lower end.

背杆がパイプよりなり、その前端部を開口部として、下部カバー部の前端部における下向片に設けた後方を向く差込み部に圧嵌してなる請求項１〜３のいずれかに記載の椅子。 The dorsal fin is made of a pipe, and the front end portion thereof is used as an opening portion, and is press-fitted into a rearward insertion portion provided in a downward piece at the front end portion of the lower cover portion. Chair.

開口部に差込み部を圧嵌したとき、上部カバー部における上片の上面が、背当ての下面に当接するようにしてなる請求項１〜４のいずれかに記載の椅子。 The chair according to any one of claims 1 to 4, wherein when the insertion portion is press-fitted into the opening, the upper surface of the upper piece in the upper cover portion comes into contact with the lower surface of the backrest.

上部カバー部における上片の後端に、背当ての下端部の後面に当接する起立片を突設してなる請求項１〜５のいずれかに記載の椅子。 The chair according to any one of claims 1 to 5, wherein an upright piece that abuts on the rear surface of the lower end portion of the backrest is projected at the rear end of the upper piece in the upper cover portion.

上片を、背当ての下面にねじ止めしてなる請求項１〜６のいずれかに記載の椅子。 The chair according to any one of claims 1 to 6, wherein the upper piece is screwed to the lower surface of the backrest.

上部カバー部の裏面に、上端が上片の下面に接続された左右複数の縦リブを設けてなる請求項１〜７のいずれかに記載の椅子。
The chair according to any one of claims 1 to 7, wherein a plurality of left and right vertical ribs whose upper ends are connected to the lower surface of the upper piece are provided on the back surface of the upper cover portion.