JP5064001B2 - Chair armrest mounting structure - Google Patents

Chair armrest mounting structure Download PDF

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JP5064001B2
JP5064001B2 JP2006331300A JP2006331300A JP5064001B2 JP 5064001 B2 JP5064001 B2 JP 5064001B2 JP 2006331300 A JP2006331300 A JP 2006331300A JP 2006331300 A JP2006331300 A JP 2006331300A JP 5064001 B2 JP5064001 B2 JP 5064001B2
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seat plate
armrest
fastening piece
ribs
mounting structure
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JP2008142208A (en
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俊介 石丸
義徳 磯貝
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Okamura Corp
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Okamura Corp
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Description

本発明は、椅子の座板の下面に対する肘掛けの下端部の取付構造に関する。   The present invention relates to a structure for attaching a lower end portion of an armrest to a lower surface of a seat plate of a chair.

座体を、合成樹脂製のシェル状座板と、その上面に取付けられたクッション材とにより形成し、座板の両側部下面に、肘掛けの下端部を取付けた椅子は、例えば特許文献１に記載されており、公知である。
特開平７−２４６１２７号公報 For example, Patent Document 1 discloses a chair in which a seat body is formed by a synthetic resin shell-shaped seat plate and a cushion material attached to the upper surface thereof, and lower end portions of armrests are attached to the lower surfaces of both side portions of the seat plate. It is described and publicly known.
JP 7-246127 A

上記特許文献に記載されている肘掛け取付構造においては、座板の上面に、その左右幅とほぼ同じ左右寸法の金属板製の締付片を配設し、この締付片の両側端部に設けためねじ孔に、肘掛けにおける下端部の内向取付部に下方より挿入したボルトを螺合することにより、座板の両側部下面に、肘掛けの下端部を取り付けている。
そのため、締付片が大きくなり、材料費が嵩むとともに、座体の重量が増すという問題がある。 In the armrest mounting structure described in the above-mentioned patent document, metal plate fastening pieces having the same left and right dimensions as the left and right widths are arranged on the upper surface of the seat plate, and the both side ends of the fastening pieces are arranged. The lower end of the armrest is attached to the lower surface of both side portions of the seat plate by screwing a bolt inserted from below into the inward mounting portion of the lower end of the armrest into the screw hole.
Therefore, there is a problem that the fastening piece becomes large, the material cost increases, and the weight of the seat increases.

また、締付片の両側端部に形成した段部を、座板の両側部上面に突設した突部に当接させることにより、締付片の左右方向の位置決めがなされているが、前後方向の位置決めがなされていないため、締付片のめねじ孔と、肘掛けの下方より挿入したボルトとが前後方向に位置ずれし、それらを互いに整合させて螺合する作業に手間がかかり、特に、座板の上面にクッション材を取付けた後の肘掛けの取付作業が面倒である。   In addition, the stepping parts formed on both side ends of the fastening pieces are brought into contact with the protrusions provided on the upper surfaces of the both side parts of the seat plate, so that the fastening pieces are positioned in the left-right direction. Since the positioning in the direction is not performed, the female screw hole of the fastening piece and the bolt inserted from the lower part of the armrest are displaced in the front-rear direction, and it takes time and labor to align and screw them together. The mounting work of the armrest after mounting the cushion material on the upper surface of the seat plate is troublesome.

本発明は、上記問題点に鑑みてなされたもので、座板の上面に設けられる締付片の大きさを最小限として、材料費の節約と座体の軽量化を図るとともに、締付片の前後左右の位置決めをすることにより、肘掛けを締付片に容易に固定しうるようにした、椅子の肘掛け取付構造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 minimizes the size of the fastening piece provided on the upper surface of the seat plate, thereby saving material costs and reducing the weight of the seat, and fastening pieces. It is an object of the present invention to provide an armrest mounting structure for a chair that can easily fix an armrest to a fastening piece by positioning the front, rear, left, and right of the chair.

本発明によると、上記課題は、次のようにして解決される。
（１）座板の両側部下面に、肘掛けの下端部における内方を向く取付部を取付ける椅子の肘掛け取付構造において、前記座板の上面に、左右方向を向く複数の横リブと、前後方向を向く複数の縦リブとからなる平面視格子状の補強リブを立設し、この補強リブの左右両側部に、互いに隣接する横リブと、少なくとも内方の縦リブとにより画成された収容部を形成し、この収容部に、左右方向の中間部に正面視概ね上向きコ字状の上向き折曲部を有し、かつ左右両側端部にめねじ孔を有する金属製の板状の締付片を、前後方向と内方に移動不能に収容し、前記肘掛けの取付部と座板に下方より挿入したボルトを、前記締付片のめねじ孔に螺合することにより、座板の両側部下面に肘掛けの取付部を固着する。 According to the present invention, the above problem is solved as follows.
(1) In an armrest mounting structure for a chair in which mounting portions facing inward at the lower end of the armrest are attached to the lower surfaces of both side portions of the seat plate, a plurality of lateral ribs facing in the left-right direction on the upper surface of the seat plate, Is formed by a plurality of vertical ribs facing each other in a plan view, and is defined by lateral ribs adjacent to each other and at least inner vertical ribs on the left and right sides of the reinforcing ribs. A metal plate-shaped fastening member having an upward bent portion that is generally U-shaped in the front view at the middle portion in the left-right direction, and has female screw holes at both left and right end portions. The attachment piece is housed immovably in the front-rear direction and the inward direction, and a bolt inserted from below into the mounting portion of the armrest and the seat plate is screwed into the female screw hole of the fastening piece. Secure the armrest attachments to the bottom of both sides.

（２）上記(１)項において、肘掛け被取付部付近の横リブの間隔を、他部よりも小さくすることにより、前後幅の小さい複数の収容部を形成し、この複数の収容部に、締付片を収容する。 (2) In the above item (1), by forming the interval between the lateral ribs in the vicinity of the armrest attached portion smaller than that of the other portion, a plurality of accommodating portions having a small front-rear width are formed. Accommodates the clamping piece.

（３）上記(１)または(２)項において、締付片を座板の上面に固定する。 (3) In the above item (1) or (2), the fastening piece is fixed to the upper surface of the seat plate.

（４）上記(１)〜(３)項のいずれかにおいて、締付片における上向き折曲部の下面を、座板の上面に立設された、上方に開口するめねじ孔を有する支持筒の上面に当接させ、前記上向き折曲部に設けた取付孔に上方より挿入したボルトを、前記めねじ孔に螺合することにより、締付片を座板に固定する。 (4) support having in any of (1) to (3) section, the lower surface of the upward-out bent portion in the fastening piece, standing on the upper surface of the seat plate, the female screw hole opened upward A fastening piece is fixed to the seat plate by screwing a bolt, which is brought into contact with the upper surface of the cylinder and inserted from above into a mounting hole provided in the upward bent portion, into the female screw hole.

（５）上記(４)項において、座板の上面を椀状に凹ませたものにおいて、支持筒をほぼ垂直に立設し、その上面と締付片の上向き折曲部の下面とがほぼ水平をなして当接するようにする。 ( 5 ) In the above item ( 4 ), in the case where the upper surface of the seat plate is recessed in a bowl shape, the support cylinder is erected almost vertically, and the upper surface and the lower surface of the upward bent portion of the fastening piece are approximately Make a horizontal contact.

（６）上記(４)または(５)項において、支持筒の外周面と、互いに隣接する横リブの対向面とを、座板の上面に立設されたリブにより連結する。 ( 6 ) In the above item ( 4 ) or ( 5 ), the outer peripheral surface of the support tube and the opposing surface of the lateral ribs adjacent to each other are connected by ribs provided upright on the upper surface of the seat plate.

上記(１)項に記載の発明によれば、座板の上面に格子状の補強リブを立設し、その左右両側部における互いに隣接する横リブと、内方の縦リブとにより画成された上下方向の曲げ剛性の大きな収容部に締付片を収容し、この締付片に、肘掛けを固定しているため、締付片の大きさを大としなくても、肘掛けを強固に取付けることができる。
従って、締付片を最小限の大きさとして、その材料費を節約しうるとともに、座板を含む座体全体を軽量化することができる。
また、締付片は、収容部内に、前後方向と内方に移動不能に収容され、その方向の位置決めがなされているので、締付片及び座板への肘掛けの取付作業が容易となる。
さらに、締付片を、左右方向の中間部に正面視概ね下向きコ字状の上向き折曲部を有する金属製の板状のものとしてあるので、締付片の強度が大となるとともに、中間部の上向き折曲部の前後両端が、隣接する横リブの対向面に当接するので、収容部内において締付片が前後方向にぐらつく恐れはない。 According to the invention described in the above item (1) , grid-like reinforcing ribs are erected on the upper surface of the seat plate, and are defined by the lateral ribs adjacent to each other on both the left and right sides and the inner longitudinal ribs. Since the fastening piece is housed in the housing part with large bending rigidity in the vertical direction, and the armrest is fixed to this fastening piece, the armrest can be firmly attached without increasing the size of the fastening piece. be able to.
Therefore, it is possible to save the material cost by minimizing the size of the fastening piece, and to reduce the weight of the entire seat including the seat plate.
Further, the fastening pieces are housed in the housing portion so as to be immovable in the front-rear direction and the inward direction, and are positioned in that direction, so that the mounting work of the armrests to the fastening pieces and the seat plate is facilitated.
Furthermore, since the fastening piece is made of a metal plate having an upward bent portion that is generally downwardly U-shaped when viewed from the front in the middle portion in the left-right direction, the strength of the fastening piece increases and the middle Since the front and rear ends of the upward bent part of the part abut against the opposing surfaces of the adjacent lateral ribs, there is no fear that the fastening piece will wobble in the front-rear direction in the housing part.

上記(２)項に記載の発明によれば、肘掛け被取付部付近の座板の曲げ剛性がより高まり、前後幅の小さい複数の収容部の曲げ剛性も大きくなるので、この収容部に収容した複数の締付片に、肘掛けを、より強固に取付けることができる。
また、締付片を細長いものとして、それを小型化しうる。 According to the invention described in the above item (2), the bending rigidity of the seat plate in the vicinity of the armrest attached portion is further increased, and the bending rigidity of the plurality of accommodating portions having small front and rear widths is also increased. The armrest can be more firmly attached to the plurality of fastening pieces.
Further, the fastening piece can be made small and the size can be reduced.

上記(３)項に記載の発明によれば、締付片を座板に固定することにより、座板の上面にクッション材を取付けた後でも、肘掛けを簡単に取付けることができ、作業性が向上する。 According to the invention described in the above item (3) , by fixing the fastening piece to the seat plate, the armrest can be easily attached even after the cushion material is attached to the upper surface of the seat plate. improves.

上記(４)項に記載の発明によれば、締付片の座板への固定作業を、座板の上面よりも高い位置において、上方より容易に行うことができる。 According to the invention described in (4) above , the fastening operation of the fastening piece to the seat plate can be easily performed from above at a position higher than the upper surface of the seat plate.

上記(５)項に記載の発明によれば、座板の両側部が傾斜していても、支持筒は垂直に立設され、かつその上面と締付片の上向き折曲部の下面とは、水平をなして当接しているので、締付片の座板への取付作業を、上方からより容易に行うことができる。 According to the invention described in the above item (5) , even if both sides of the seat plate are inclined, the support cylinder is erected vertically, and the upper surface and the lower surface of the upward bent portion of the fastening piece are Since they are in contact with each other horizontally, the work of attaching the fastening pieces to the seat plate can be performed more easily from above.

上記(６)項に記載の発明によれば、支持筒がリブにより補強され、ぐらつきが防止されるので、締付片も座板に強固に固定される。 According to the invention described in the above item (6) , the support cylinder is reinforced by the ribs and the wobble is prevented, so that the fastening piece is also firmly fixed to the seat plate.

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、本発明を適用した椅子の前方斜視図で、椅子１は、先端にキャスタ２が取付けられた放射方向を向く５本の脚杆３からなる脚体４と、その中心に立設され、内部に収容されたガススプリング(図示略)により伸縮可能とされた脚柱５と、この脚柱５の上端に固着された支基６と、この支基６の上部に取付けられた座体７と、同じく支基６の後端部に後傾可能に取付けられた背凭れ８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 front perspective view of a chair to which the present invention is applied. The chair 1 is composed of a leg 4 composed of five leg rods 3 facing the radial direction and having a caster 2 attached to the tip thereof, and standing at the center thereof. The base 5 is made extendable by a gas spring (not shown) accommodated therein, the support 6 fixed to the upper end of the support 5, and the seat attached to the top of the support 6. A body 7 and a backrest 8 attached to the rear end of the support base 6 so as to be able to tilt backward are also provided.

座体７は、下面中央部が支基６の上面に固着された合成樹脂製の座板９と、この座板９の上面に取付けられたクッション材１０とからなり、座板９のやや後方寄りの左右両側部下面には、左右１対の肘掛け１１、１１が、次に詳述するようにして取付けられている。   The seat body 7 is composed of a synthetic resin seat plate 9 whose bottom center is fixed to the upper surface of the support base 6 and a cushion material 10 attached to the upper surface of the seat plate 9. A pair of left and right armrests 11, 11 are attached to the lower surfaces of the left and right side portions as described in detail below.

左右の肘掛け１１は、側面視倒立三角形状の肘当て部１２と、その下端に連設された、斜め内向き下方を向く取付部１３とからなり、全体が合成樹脂により一体成形されている。   The left and right armrests 11 are each composed of an elbow rest 12 having an inverted triangular shape when viewed from the side, and a mounting portion 13 that is connected to the lower end of the armrest 11 and faces obliquely inward and downward, and is entirely formed of synthetic resin.

座板９は、周縁部を除く内側部を椀状に凹ませた平面視概ね方形をなし、その外周部を除いた上面に、図２に示すように、前後方向(図２の下方が前)及び左右方向に並ぶ複数の横リブ１４aと縦リブ１４bよりなる格子状の補強リブ１４と、平面視前向き及び後向きＶ字状の複数の斜向リブ１５とを立設することにより高い曲げ剛性を有するものとされている。なお、肘掛け１１取付部付近における横リブ１４aの間隔は、他のそれよりも小さくしてあり、その部分の座板９の曲げ剛性は、特に大とされている。   As shown in FIG. 2, the seat plate 9 has a substantially square shape in a plan view in which the inner part excluding the peripheral part is recessed in a bowl shape, and the upper surface excluding the outer peripheral part has a front-rear direction (the lower part of FIG. ) And a plurality of horizontal ribs 14a and vertical ribs 14b arranged in the left-right direction, and a plurality of oblique ribs 15 that are V-shaped forward and rearward in plan view, and have high bending rigidity. It is supposed to have. In addition, the space | interval of the lateral rib 14a in the armrest 11 vicinity vicinity is made smaller than that of others, and especially the bending rigidity of the seat plate 9 of the part is made large.

座板９におけるやや後方寄りの左右両側部は、例えば図４に明示するように、下面が上向きに凹入する肘掛け１１の被取付部１６、１６とされ、この両被取付部１６付近における座板９の上面においては、縦リブ１４bが欠如され、かつ前後方向に並ぶ複数(図示では４本)の横リブ１４aのやや内方寄り同士は、前後方向を向く３本の短寸の連結リブ１７により互いに結合されている。この連結リブ１７は、座板９の補強だけでなく、後記する肘掛け１１取付用の締付片２４の左右方向の位置決めも兼ねている。   For example, as clearly shown in FIG. 4, left and right side portions of the seat plate 9 are attached portions 16 and 16 of the armrest 11 whose bottom surface is recessed upward, and seats in the vicinity of both the attached portions 16. On the upper surface of the plate 9, the longitudinal ribs 14 b are absent, and a plurality of (four in the figure) horizontal ribs 14 a arranged in the front-rear direction are slightly inwardly spaced from each other by three short connecting ribs facing the front-rear direction. 17 are connected to each other. The connecting rib 17 serves not only to reinforce the seat plate 9 but also to position the fastening piece 24 for mounting the armrest 11 described later in the left-right direction.

左右の肘掛け１１の被取付部１６、１６における互いに隣接する前部と後部の横リブ１４a、１４aと、連結リブ１７とにより画成された領域には、それぞれ左右方向に長い、後記する締付片２４の収容部１８、１８が形成されている。   Fastening described later, which is long in the left-right direction, is formed in the region defined by the front and rear lateral ribs 14a, 14a and the connecting ribs 17 in the attached portions 16, 16 of the left and right armrests 11, respectively. The accommodating parts 18 and 18 of the piece 24 are formed.

両収容部１８における座板９には、斜め上下方向を向く左右２個ずつの通孔１９、１９が穿設され、また、両通孔１９間における座板９の上面には、上方に開口するめねじ孔２０を有する支持筒２１、２１が、一体的に、かつほぼ垂直に立設されている。両支持筒２１の前後の外周面と、前後の横リブ１４aの対向面とは、座板９の上面に立設されたリブ２２、２２により連結され、支持筒２１の補強がなされている。   The seat plate 9 in both housing parts 18 is provided with two left and right through holes 19, 19 facing diagonally up and down, and the upper surface of the seat plate 9 between the two through holes 19 opens upward. Support cylinders 21 and 21 having female screw holes 20 are erected integrally and substantially vertically. The front and rear outer peripheral surfaces of the support cylinders 21 and the opposed surfaces of the front and rear lateral ribs 14a are connected by ribs 22 and 22 erected on the upper surface of the seat plate 9, and the support cylinder 21 is reinforced.

前側の収容部１８を画成している前後の横リブ１４aの対向面と、後側の収容部１８を画成している後部の横リブ１４aの前面とには、それぞれ、後記する締付片２４の前後方向の位置決めをする短寸の位置決めリブ２３が、座板９の上面から起立するように、横リブ１４aの上端付近まで突設されている。   The fastening surfaces described below are respectively provided on the opposing surfaces of the front and rear lateral ribs 14a defining the front housing part 18 and the front surface of the rear lateral ribs 14a defining the rear housing part 18. A short positioning rib 23 for positioning the piece 24 in the front-rear direction protrudes from the upper surface of the seat plate 9 to the vicinity of the upper end of the lateral rib 14a.

図３は、肘掛け１１取付後の座板９の平面図、図４は、図３のIV-IV線拡大縦断正面図、図５は、肘掛け１１の取付後の座板９の一側部を下方より見た斜視図である。   3 is a plan view of the seat plate 9 after the armrest 11 is attached, FIG. 4 is an enlarged front view of the IV-IV line in FIG. 3, and FIG. 5 is a side view of the seat plate 9 after the armrest 11 is attached. It is the perspective view seen from the lower part.

座板９の左右の被取付部１６に形成した収容部１８、１８には、図６に示すような締付片２４が収容されている。締付片２４は、水平な足片２４a、２４aと、中間部の上向き折曲部２４bとからなり、細長い鋼板を、中間部が正面視概ね上向きコ字状をなすようにプレスすることにより、一体成形されている。   A fastening piece 24 as shown in FIG. 6 is accommodated in the accommodating portions 18, 18 formed in the left and right attached portions 16 of the seat plate 9. The fastening piece 24 is composed of horizontal foot pieces 24a, 24a and an upward bent portion 24b of the intermediate part, and by pressing an elongated steel plate so that the intermediate part has an approximately U-shape when viewed from the front, It is integrally molded.

両足片２４aの上面には、それに穿設された図示しない通孔と整合するようにして、ナット２５、２５が、溶接により固着されている。また、上向き折曲部２４bの上面には、座板９の取付孔２６が穿設されている。   Nuts 25, 25 are fixed to the upper surfaces of both leg pieces 24a by welding so as to be aligned with through holes (not shown) drilled therein. A mounting hole 26 for the seat plate 9 is formed in the upper surface of the upward bent portion 24b.

座板９の収容部１８に、締付片２４を、その上向き折曲部２４bの高さの高い方を内側に向けて収容すると、図４に示すように、上向き折曲部２４bの上面がほぼ水平をなして、その下面が座板９に立設した支持筒２１の水平をなす上面と当接するとともに、両足片２４aに固着したナット２５の軸線は、斜め上下方向を向くようになる。   When the fastening piece 24 is accommodated in the accommodating portion 18 of the seat plate 9 with the upwardly bent portion 24b having the higher height facing inward, as shown in FIG. 4, the upper surface of the upward bent portion 24b is The bottom surface of the nut 25 that is substantially horizontal and abuts against the horizontal top surface of the support cylinder 21 erected on the seat plate 9 is directed obliquely up and down.

また、図３に示すように、収容部１８に収容された締付片２４は、その内端が連結片１７に当接することにより、内方への移動が阻止されて左右方向の位置決めがなされ、同じく前後両端が、前部の収容部１８においては横リブ１４aと位置決めリブ２３に、後部の収容部においては互いに対向する位置決めリブ２３に、それぞれ当接することにより、前後方向への移動が阻止されて、その方向の位置決めがなされる。   Further, as shown in FIG. 3, the fastening piece 24 accommodated in the accommodation portion 18 is prevented from moving inward by the inner end of the fastening piece 24 coming into contact with the connecting piece 17 and is positioned in the left-right direction. Similarly, the front and rear ends abut against the lateral ribs 14a and the positioning ribs 23 in the front receiving portion 18 and the positioning ribs 23 opposite to each other in the rear receiving portion, thereby preventing movement in the front and rear direction. Then, positioning in that direction is performed.

このようにして、締付片２４の前後左右の位置決めがなされると、両足片２４aのナット２５と、座板９に設けた通孔１９との中心が整合するとともに、上向き折曲部２４bの取付孔２６と、座板９における支持筒２１のめねじ孔２０の中心も整合するようになる。   When the fastening piece 24 is positioned in the front / rear / right / left direction in this manner, the centers of the nuts 25 of both foot pieces 24a and the through holes 19 provided in the seat plate 9 are aligned, and the upward bent portion 24b The center of the mounting hole 26 and the female screw hole 20 of the support cylinder 21 in the seat plate 9 are also aligned.

座板９に肘掛け１１を取付けるには、図３及び図４に示すように、座板９の左右の被取付部１６の各収容部１８に、４個の締付片２４を収容して位置決めした後、その上向き折曲部２４bの取付孔２６に上方より挿入したボルト２７を、座板９の支持筒２１のめねじ孔２０に螺合することにより、全ての締付片２４を座板９の両側部上面に固定する。   In order to attach the armrest 11 to the seat plate 9, as shown in FIGS. 3 and 4, the four fastening pieces 24 are accommodated and positioned in the accommodating portions 18 of the left and right attached portions 16 of the seat plate 9. After that, the bolts 27 inserted into the mounting holes 26 of the upward bent portions 24b from above are screwed into the female screw holes 20 of the support cylinder 21 of the seat plate 9, so that all the fastening pieces 24 are seated. 9 is fixed to the upper surface of both side portions.

ついで、図４及び図５に示すように、座板９の被取付部１６の下面に形成された凹入部２８に、肘掛け１１の取付部１３の内端部を嵌合したのち、それに穿設された、被取付部１６の４個の通孔１９の軸線と整合する斜め上下方向を向く４個の段付孔２９の下方より、座板９と直交する方向に向かって、ボルト３０を挿入し、このボルト３０を、各締付片２４の両足片２４aのナット２５に螺合して締め付ける。
これにより、左右の肘掛け１１は、座板９の両側部下面に、座板９を挟み込むようにして、強固に取付けられる。 Next, as shown in FIGS. 4 and 5, the inner end portion of the mounting portion 13 of the armrest 11 is fitted into the recessed portion 28 formed on the lower surface of the mounted portion 16 of the seat plate 9, and then drilled into the recessed portion 28. The bolts 30 are inserted in the direction perpendicular to the seat plate 9 from below the four stepped holes 29 that face in the oblique vertical direction aligned with the axes of the four through holes 19 of the mounted portion 16. Then, the bolt 30 is screwed into the nuts 25 of the both foot pieces 24a of the tightening pieces 24 and tightened.
Thereby, the left and right armrests 11 are firmly attached to the lower surfaces of both side portions of the seat plate 9 so as to sandwich the seat plate 9.

以上説明したように、上記実施形態の肘掛け取付構造においては、座板９の両側部上面における前後に隣接する横リブ１４aと、内方の連結リブ１７とにより画成された、上下方向の曲げ剛性の大きな収容部１８に、締付片２４を収容し、この締付片２４に、肘掛け１１を、座板９を挟んで固定してあるため、締付片２４を特に大きくしなくても、肘掛け１１を強固に取り付けることができる。
従って、締付片２４を最小限の大きさとして、その材料費を節約しうるとともに、座体７を軽量化することができる。 As described above, in the armrest mounting structure of the above embodiment, the bending in the vertical direction defined by the lateral ribs 14a adjacent to each other on the upper surface of both side portions of the seat plate 9 and the inner connecting ribs 17 is performed. Since the fastening piece 24 is accommodated in the housing portion 18 having a large rigidity, and the armrest 11 is fixed to the fastening piece 24 with the seat plate 9 interposed therebetween, the fastening piece 24 is not particularly enlarged. The armrest 11 can be firmly attached.
Therefore, the fastening piece 24 can be minimized, and the material cost can be saved, and the seat body 7 can be reduced in weight.

また、各締付片２４は、収容部１８内において、前後左右方向の位置決めがなされているので、それへの肘掛け１１の取付作業が容易となる。
しかも、各締付片２４は、収容部１８内に、位置決めされた状態で、ボルト２７により固定されているので、座板９の上面にクッション材１０を取付けた後でも、肘掛け１１を簡単に取り付けることができる。 Moreover, since each fastening piece 24 is positioned in the front-rear and left-right directions in the accommodating portion 18, it is easy to attach the armrest 11 thereto.
Moreover, since each fastening piece 24 is fixed in the accommodating portion 18 by the bolt 27, the armrest 11 can be easily attached even after the cushion material 10 is attached to the upper surface of the seat plate 9. Can be attached.

本発明は、上記実施形態に限定されるものではない。
上記実施形態では、締付片２４の足片２４aの上面にナット２５を溶接し、このナット２５に、肘掛け１１取付用のボルト３０を螺合しているが、足片２４aにめねじ孔を穿設し、このめねじ孔にボルト３０を螺合するようにすれば、ナット２５を省略することができる。 The present invention is not limited to the above embodiment.
In the above embodiment, the nut 25 is welded to the upper surface of the foot piece 24a of the fastening piece 24, and the bolt 30 for mounting the armrest 11 is screwed to the nut 25. If the bolt 30 is screwed into the female screw hole, the nut 25 can be omitted.

また、締付片２４の前後寸法を、前後に隣接する横リブ１４a間の離間寸法とほぼ等しくし、締付片２４の前後両端が、横リブ１４aの対向面と当接するようにすれば、短寸の位置決めリブ２３を省略することができる。   Further, if the longitudinal dimension of the fastening piece 24 is made substantially equal to the distance between the lateral ribs 14a adjacent to the front and rear, and the longitudinal ends of the fastening piece 24 are in contact with the opposing surfaces of the lateral rib 14a, The short positioning rib 23 can be omitted.

上記実施形態では、リブにより区画された収容部１８を形成するために、内方の連結リブ１７を、格子状の補強リブ１４の縦リブ１４bとずれた位置に形成しているが、縦リブ１４bの左右方向の間隔を適宜調整して、その内方の縦リブ１４bを、収容部１８を画成する連結リブ１７として共用してもよい。   In the above embodiment, in order to form the accommodating portion 18 partitioned by the ribs, the inner connecting ribs 17 are formed at positions shifted from the vertical ribs 14b of the lattice-shaped reinforcing ribs 14. The space between the left and right sides of 14 b may be adjusted as appropriate, and the inner vertical rib 14 b may be shared as the connecting rib 17 that defines the accommodating portion 18.

前後方向に並ぶ横リブ１４aの外側端にも、縦リブ１４bを設け、収容部１８を、互いに隣接する前後の横リブ１４aと、左右の縦リブ１４bとにより画成された枠状とし、この枠状とした収容部に、締付片２４を、前後左右方向に移動不能として収容してもよい。
また、互いに隣接する横リブ１４a間の間隔を大として、収容部１８を大きくし、この収容部に、前後寸法を大とした１個の締付片を収容することもある。 Vertical ribs 14b are also provided on the outer ends of the horizontal ribs 14a arranged in the front-rear direction, and the accommodating portion 18 is formed into a frame shape defined by the front and rear horizontal ribs 14a and the left and right vertical ribs 14b. The fastening piece 24 may be housed in a frame-shaped housing part so as not to move in the front-rear and left-right directions.
Moreover, the space | interval between the adjacent lateral ribs 14a is enlarged, the accommodating part 18 is enlarged, and one fastening piece with the large front-back dimension may be accommodated in this accommodating part.

肘掛け１１を締付片２４に固定した後、クッション材１０を座板９に取付ける際には、必ずしも締付片２４を座板９に固定する必要はなく、ボルト２７や座板９に立設した支持筒２１を省略することもできる。   When the cushion member 10 is attached to the seat plate 9 after the armrest 11 is fixed to the fastening piece 24, it is not always necessary to fix the fastening piece 24 to the seat plate 9. The supported cylinder 21 can be omitted.

本発明を適用した椅子の斜視図である。It is a perspective view of the chair to which this invention is applied. 同じく、座板の拡大平面図である。Similarly, it is an enlarged plan view of a seat plate. 同じく、肘掛け取付後の座板の平面図である。Similarly, it is a top view of the seat board after armrest attachment. 図３のIV-IV線拡大縦断正面図である。It is the IV-IV line enlarged vertical front view of FIG. 肘掛け取付後の座板の一側部を下方より見た斜視図である。It is the perspective view which looked at the one side part of the seat board after armrest attachment from the downward direction. 締付片の拡大斜視図である。It is an expansion perspective view of a fastening piece.

１ 椅子
２ キャスタ
３ 脚杆
４ 脚体
５ 脚柱
６ 支基
７ 座体
８ 背凭れ
９ 座板
１０ クッション材
１１ 肘掛け
１２ 肘当て部
１３ 取付部
１４ 補強リブ
１４a 横リブ
１４b 縦リブ
１５ 斜向リブ
１６ 被取付部
１７ 連結リブ
１８ 収容部
１９ 通孔
２０ めねじ孔
２１ 支持筒
２２ リブ
２３ 位置決めリブ
２４ 締付片
２４a 足片
２４b 上向き折曲部
２５ ナット
２６ 取付孔
２７ ボルト
２８ 凹入部
２９ 段付孔
３０ ボルト
DESCRIPTION OF SYMBOLS 1 Chair 2 Caster 3 Leg rod 4 Leg 5 Leg column 6 Support base 7 Seat body 8 Backrest 9 Seat plate 10 Cushion material 11 Armrest 12 Elbow rest 13 Mounting part 14 Reinforcement rib 14a Horizontal rib 14b Vertical rib 15 Inclined rib 16 attached portion 17 connecting rib 18 accommodating portion 19 through hole 20 female screw hole 21 support cylinder 22 rib 23 positioning rib 24 fastening piece 24a foot piece 24b upward bent portion 25 nut 26 attaching hole 27 bolt 28 recessed portion 29 stepped Hole 30 bolt

Claims (6)

座板の両側部下面に、肘掛けの下端部における内方を向く取付部を取付ける椅子の肘掛け取付構造において、前記座板の上面に、左右方向を向く複数の横リブと、前後方向を向く複数の縦リブとからなる平面視格子状の補強リブを立設し、この補強リブの左右両側部に、互いに隣接する横リブと、少なくとも内方の縦リブとにより画成された収容部を形成し、この収容部に、左右方向の中間部に正面視概ね上向きコ字状の上向き折曲部を有し、かつ左右両側端部にめねじ孔を有する金属製の板状の締付片を、前後方向と内方に移動不能に収容し、前記肘掛けの取付部と座板に下方より挿入したボルトを、前記締付片のめねじ孔に螺合することにより、座板の両側部下面に肘掛けの取付部を固着したことを特徴とする椅子の肘掛け取付構造。 In the armrest mounting structure of the chair, in which a mounting portion facing inward at the lower end portion of the armrest is attached to the lower surface of both side portions of the seat plate, a plurality of lateral ribs facing left and right and a plurality of facing front and rear directions on the upper surface of the seat plate Reinforcing ribs in a plan view made up of vertical ribs are erected, and on both the left and right sides of the reinforcing ribs are formed storage portions defined by mutually adjacent lateral ribs and at least inner vertical ribs And a metal plate-like fastening piece having an upward bent portion that is generally U-shaped in the front view at the middle portion in the left-right direction and female screw holes at the left and right ends. The bolts, which are housed immovably in the front-rear direction and the inward direction, and are inserted into the mounting portions of the armrests and the seat plate from below are screwed into the female screw holes of the fastening pieces, thereby lowering the lower surfaces of both side portions of the seat plate. An armrest mounting structure for a chair, characterized in that an armrest mounting portion is fixed to the chair. 肘掛け被取付部付近の横リブの間隔を、他部よりも小さくすることにより、前後幅の小さい複数の収容部を形成し、この複数の収容部に、締付片を収容してなる請求項１記載の椅子の肘掛け取付構造。   Claims formed by forming a plurality of accommodating portions with a small front-rear width by making the interval between the lateral ribs in the vicinity of the armrest attached portion smaller than the other portions, and accommodating fastening pieces in the plurality of accommodating portions. 1. The armrest mounting structure of the chair according to 1. 締付片を座板の上面に固定してなる請求項１または２記載の椅子の肘掛け取付構造。   The chair armrest mounting structure according to claim 1 or 2, wherein the fastening piece is fixed to the upper surface of the seat plate. 締付片における上向き折曲部の下面を、座板の上面に立設された、上方に開口するめねじ孔を有する支持筒の上面に当接させ、前記上向き折曲部に設けた取付孔に上方より挿入したボルトを、前記めねじ孔に螺合することにより、締付片を座板に固定してなる請求項１〜３のいずれかに記載の椅子の肘掛け取付構造。 The lower surface of the upward-out bent portion in the fastening piece, standing on the upper surface of the seat plate, is brought into contact with the upper surface of the support cylinder having a female screw hole which opens upward, it is provided on the upwardly bent portion mounting The armrest mounting structure for a chair according to any one of claims 1 to 3 , wherein a fastening piece is fixed to a seat plate by screwing a bolt inserted into the hole from above into the female screw hole. 座板の上面を椀状に凹ませたものにおいて、支持筒をほぼ垂直に立設し、その上面と締付片の上向き折曲部の下面とがほぼ水平をなして当接するようにしてなる請求項４記載の椅子の肘掛け取付構造。 In the case where the upper surface of the seat plate is recessed in a bowl shape, the support cylinder is erected almost vertically so that the upper surface and the lower surface of the upward bent portion of the fastening piece are in contact with each other in a substantially horizontal manner. The armrest mounting structure for a chair according to claim 4 . 支持筒の外周面と、互いに隣接する横リブの対向面とを、座板の上面に立設されたリブにより連結してなる請求項４または５記載の椅子の肘掛け取付構造。 The armrest mounting structure for a chair according to claim 4 or 5 , wherein the outer peripheral surface of the support cylinder and the opposing surfaces of the lateral ribs adjacent to each other are connected by a rib erected on the upper surface of the seat plate.
JP2006331300A 2006-12-08 2006-12-08 Chair armrest mounting structure Expired - Fee Related JP5064001B2 (en)

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