JP2006110004A - Headrest attaching structure of chair - Google Patents

Headrest attaching structure of chair Download PDF

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JP2006110004A
JP2006110004A JP2004299237A JP2004299237A JP2006110004A JP 2006110004 A JP2006110004 A JP 2006110004A JP 2004299237 A JP2004299237 A JP 2004299237A JP 2004299237 A JP2004299237 A JP 2004299237A JP 2006110004 A JP2006110004 A JP 2006110004A
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headrest
frame
chair
backrest
mounting structure
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JP4473696B2 (en
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Takeshi Nakayama
健 中山
Tetsuya Narita
哲也 成田
Ryo Igarashi
僚 五十嵐
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Okamura Corp
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Okamura Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a headrest attaching structure of a chair in a simple structure capable of strongly and stably supporting a headrest, facilitating the positioning and assembling work of a backrest and the headrest and being manufactured at a low cost. <P>SOLUTION: By providing a recessed groove 14a in left and right directions at the lower end of the headrest 11, a forked part 14d separated in front and back directions is formed at the lower end part of the headrest 11. The forked part 14d is made to straddle and fit to a rear part upper frame 13b in the left and right directions provided on an upper end rear part of the backrest 7 of the chair from above and the lower part of the headrest 11 is attached to a backrest frame body 13. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、椅子のヘッドレスト取付構造に関する。   The present invention relates to a headrest mounting structure for a chair.

椅子の背凭れにヘッドレストを取付ける構造としては、ヘッドレストと一体となったヘッドレスト支持板を背凭れの背板と重合させてねじ止めしたもの(例えば特許文献1参照)、背凭れの上端後部より起立する1対の縦杆に、ヘッドレストを高さ調節可能として装着したもの(例えば特許文献2参照)、背凭れの上端部に設けた左右方向を向く軸に、枕支持杆を枢着することにより、ヘッドレストを前後方向に傾動可能としたもの(例えば特許文献3参照)等が知られている。
実開平5−72249号公報 特開2001−314268号公報 特開2004−57397号公報
The headrest can be attached to the backrest of the chair with a headrest support plate integrated with the headrest superposed on the backrest of the backrest and screwed (for example, see Patent Document 1), standing up from the rear upper end of the backrest. By attaching a headrest to a pair of vertical saddles so that the height can be adjusted (for example, see Patent Document 2), by pivotally attaching a pillow support rod to an axis facing the left-right direction provided at the upper end of the backrest A headrest that can be tilted in the front-rear direction (see, for example, Patent Document 3) is known.
Japanese Utility Model Publication No. 5-72249 JP 2001-314268 A JP 2004-57397 A

特許文献1のものは、ヘッドレスト支持板の板厚を大としなければ十分な強度が得られず、また、ねじの頭部が露呈し、体裁が悪い。
特許文献2および3のものは、構造が複雑で高価になるとともに、組付け作業が煩瑣である。
In Patent Document 1, sufficient strength cannot be obtained unless the thickness of the headrest support plate is increased, and the head portion of the screw is exposed, resulting in poor appearance.
In Patent Documents 2 and 3, the structure is complicated and expensive, and the assembly work is troublesome.

本発明は、上記事情に鑑みてなされたもので、構造が簡単であるとともに、ヘッドレストを強固に安定して支持することができ、しかも、背凭れとヘッドレストとの位置合わせや、組付け作業が容易で、安価に製造できるようにした椅子のヘッドレスト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 circumstances, has a simple structure, can support the headrest firmly and stably, and can perform alignment and assembly work between the backrest and the headrest. An object of the present invention is to provide a headrest mounting structure for a chair that is easy and inexpensive to manufacture.

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) ヘッドレストの下端に左右方向を向く凹溝を設けることにより、ヘッドレストの下端部に前後方向に離間する二股部を形成し、この二股部を、椅子の背凭れにおける上端後部に設けた左右方向を向く横杆に上方より跨嵌して、ヘッドレストの下部を背凭れ枠体に取り付ける。
According to the present invention, the above problem is solved as follows.
(1) By forming a concave groove facing in the left-right direction at the lower end of the headrest, a bifurcated portion that is separated in the front-rear direction is formed at the lower end portion of the headrest, and this bifurcated portion is provided at the rear of the upper end of the backrest of the chair. The lower part of the headrest is attached to the backrest frame by straddling the upper part of the reed to the direction.

(2) 上記(1)項において、横杆を、椅子の背凭れ枠体における前部上枠の後面に両端部が結合され、かつ中間部が前記前部上枠より後方に離間した左右方向を向く後部上枠により形成する。 (2) In the above item (1), the horizontal axis is a lateral direction in which both ends are coupled to the rear surface of the front upper frame of the chair backrest frame and the middle part is spaced rearward from the front upper frame. It is formed by the rear upper frame that faces.

(3) 上記(1)または(2)項において、横杆を、背凭れ枠体と一体に形成する。 (3) In the above item (1) or (2), the recumbent is formed integrally with the backrest frame.

(4) 上記(1)または(2)項において、ヘッドレストの基枠の前後方向の厚さを、上部より下部に向かって漸次厚くし、その厚くなった基枠の下部に二股部を形成する。 (4) In the above item (1) or (2), the thickness of the base frame of the headrest is gradually increased from the upper part toward the lower part, and a bifurcated portion is formed at the lower part of the thickened base frame. .

(5) 上記(1)または(2)項において、ヘッドレストの下端に左右方向を向く凹溝を設けることにより、ヘッドレストの下端部に形成された前垂下片と後垂下片とを横杆の前後面に密接し、前垂下片と後垂下片とを、それらの間に横杆を挟んで、互いにボルト締めする。 (5) In the above paragraph (1) or (2), the front and rear hanging pieces formed on the lower end of the headrest are moved forward and backward by providing a concave groove facing the left and right direction at the lower end of the headrest. Close to the surface, the front and rear sag pieces are bolted to each other with a lying heel between them.

(6) 上記(1)または(2)項において、横杆の後面と後垂下片の後面との互いに対応する部分に、ボルト挿通孔が開口する浅い凹部を設け、ここに前記ボルト挿通孔またはボルトの頭部を覆うカバープレートを着脱自在に嵌合しうるようにする。 (6) In the above item (1) or (2), a shallow concave portion in which a bolt insertion hole is opened is provided at a portion corresponding to the rear surface of the reed and the rear surface of the hoop, and the bolt insertion hole or A cover plate that covers the head of the bolt is detachably fitted.

請求項1記載の発明によれば、下端部に設けた二股部を、背凭れの上端後部に設けた横杆に、上方より跨嵌するだけで、ヘッドレストを、簡単な構造で、安定して、強固に支持することができる。また、位置決めや組付け作業が容易で、安価に製造することができる。   According to the first aspect of the present invention, the headrest can be stably provided with a simple structure simply by straddling the bifurcated portion provided at the lower end portion with the recumbency provided at the upper rear portion of the backrest from above. , Can be firmly supported. Further, positioning and assembling work are easy, and it can be manufactured at low cost.

請求項2記載の発明によれば、背凭れ枠体における前部上枠と後部上枠との間の間隔を利用して、ヘッドレストの下部の二股部を、横杆、すなわち後部上枠に容易に跨嵌することができるとともに、背凭れの表面材を傷めることなく、ヘッドレスト取付作業を行なうことができる。   According to the second aspect of the present invention, the lower bifurcated portion of the headrest can be easily turned into the recumbent, that is, the rear upper frame, by utilizing the space between the front upper frame and the rear upper frame in the backrest frame. The headrest can be attached without damaging the back surface material.

請求項3記載の発明によれば、横枠を背凭れ枠体と一体に形成したので、ヘッドレストの装着時に、まず横杆を背凭れに取り付けるという作業が不要になり、部品点数を減らすことができる。また、横杆の取付手段が外部から見えないため、外観も良好なものにすることができる。   According to the invention described in claim 3, since the horizontal frame is formed integrally with the backrest frame body, when the headrest is mounted, the operation of first attaching the horizontal frame to the backrest becomes unnecessary, and the number of parts can be reduced. it can. In addition, since the attachment means of the recumbent can not be seen from the outside, the appearance can be improved.

請求項4記載の発明によれば、着座者の頭部を安定して、強固に支持することができる。   According to invention of Claim 4, a seated person's head can be supported stably and firmly.

請求項5記載の発明によれば、ヘッドレストを横杆に強固に固着することがでるとともに、ボルト締めに際して、背凭れの表面材を傷めることがない。   According to the fifth aspect of the invention, the headrest can be firmly fixed to the reed, and the backrest surface material is not damaged when the bolt is tightened.

請求項6記載の発明によれば、ヘッドレスト装着後に、後垂下片の凹部にカバープレートを装着することにより、ボルトの頭部を隠すことができ、体裁がよい。
また、ヘッドレストを横杆から外したときは、上記カバープレートを、後垂下片の凹部から外して、横杆の後面の凹部に付け替えることにより、横杆のボルト挿通孔を隠すことができるので、この場合にも体裁がよい。
According to the sixth aspect of the present invention, the head of the bolt can be concealed by attaching the cover plate to the concave portion of the trailing drop piece after the headrest is attached, and the appearance is good.
Also, when the headrest is removed from the recumbent, the cover plate is removed from the recessed part of the trailing pendant piece and replaced with the recessed part on the rear surface of the recumbent, so the recumbent bolt insertion hole can be hidden, Even in this case, the appearance is good.

以下、本発明の実施の形態を、添付図面を参照して説明する。
図1〜図10は、本発明の一実施形態を備える椅子を示す。図1および図2に示すように、この椅子においては、放射状に延びる5本の脚(1)の付け根において支柱(2)が起立し、支柱(2)の上端部には、水平面内において回動可能に支基(3)が取り付けられている。また、各脚(1)の先端には、キャスタ(4)が付設されている。
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1-10 show a chair comprising one embodiment of the present invention. As shown in FIG. 1 and FIG. 2, in this chair, the support column (2) stands up at the base of five legs (1) extending radially, and the upper end of the support column (2) is rotated in the horizontal plane. A support base (3) is movably attached. A caster (4) is attached to the tip of each leg (1).

支基(3)の前後方向の中間部には、左右方向を向く枢軸(5)が、その中心軸線の回りに回動可能として貫通されており、この枢軸(5)の両端部には、側面視ほぼL字状をなす左右1対の背凭れ支持杆(6)(6)における下部の前向部(6a)(6a)の前端部が固着されている。背凭れ支持杆(6)(6)は、この前向部(6a)(6a)の後端より起立する起立部(6b)(6b)によって、背凭れ(7)を支持している。   A pivot shaft (5) facing in the left-right direction is penetrated through the middle portion in the front-rear direction of the support base (3) so as to be rotatable around its central axis, and at both ends of the pivot shaft (5), The front end portions of the lower forward portions 6a and 6a of the pair of left and right back support rods 6 and 6 that are substantially L-shaped in a side view are fixed. The backrest support rods (6) and (6) support the backrest (7) by standing portions (6b) and (6b) that stand up from the rear ends of the forward facing portions (6a) and (6a).

各背凭れ支持杆(6)は、その前向部(6a)の上方において、座部(8)の後下部と連結されており、背凭れ(7)が後傾するのに連動して、座部(8)は、後下方へ移動するようになっている。背凭れ(7)の後傾と座部(8)の移動は、図示していないリクライニング制御装置により制御される。   Each backrest support ridge (6) is connected to the rear lower part of the seat (8) above the forward portion (6a), and in conjunction with the backrest (7) tilting backward, The seat (8) moves rearward and downward. The back tilt of the backrest (7) and the movement of the seat (8) are controlled by a reclining control device (not shown).

背凭れ支持杆(6)(6)の前向部(6a)のほぼ中央の外側面からは、正面視ほぼL字状の肘フレーム(9)が延出し、肘フレーム(9)の起立部(9a)の上端部には、肘掛け(10)が設けられている。   A substantially L-shaped elbow frame (9) in front view extends from the substantially central outer surface of the forward-facing portion (6a) of the backrest support rods (6) and (6), and the standing portion of the elbow frame (9) An armrest (10) is provided at the upper end of (9a).

図1〜図3に示すように、背凭れ(7)の上端部には、ヘッドレスト(11)が設置されている。座部(8)、背凭れ(7)、およびヘッドレスト(11)は、いずれも枠体と、その着座者側に張設された、高張力プラスチックその他適宜の材料からなるネット状の張材(12)とからなっている。   As shown in FIGS. 1-3, the headrest (11) is installed in the upper end part of the backrest (7). The seat (8), the backrest (7), and the headrest (11) are all made of a frame and a net-like tension material made of a high-strength plastic or other appropriate material stretched on the seated person side. 12).

背凭れ(7)の正面視ほぼロ字状に閉塞された背凭れ枠体(13)は、図4に示すように、その上枠部分は、中央部が後方に凹入するように湾曲する左右方向を向く前部上枠(13a)の後面両側部に、前部上枠(13a)より小さい曲率半径をもって中央部が後方に凹入するように湾曲する左右方向を向く後部上枠(13b)の両端部を結合することにより、平面視ほぼ三日月形をなすように一体成形されている。後部上枠(13b)は、ヘッドレストを支持するための横杆をなすものであるが、本実施形態においては、前部上枠(13a)と一体成形することにより、部品点数を減らし、取り付けの手間を省けるようにしてある。   As shown in FIG. 4, the back frame (13), which is closed in a substantially rectangular shape when viewed from the front of the back (7), is curved so that the upper frame portion is recessed backward. Left and right rear upper frame (13b) curved in such a way that the central part is recessed backward with a smaller radius of curvature than the front upper frame (13a) on both sides of the rear upper frame (13a) facing left and right ) Are integrally formed so as to form a substantially crescent shape in plan view. The rear upper frame (13b) forms a recumbent for supporting the headrest, but in this embodiment, by integrally molding with the front upper frame (13a), the number of parts is reduced, It saves time and effort.

図5に示すように、ヘッドレスト(11)は、正面形が閉ループ状をなす、この例ではほぼ台形とした基枠(14)、この前面に嵌めつけられる、基枠(14)とほぼ同形の張枠(15)、および張枠の前面側に張設されるネット状の張材(12)(図5においては省略)とからなつている。   As shown in FIG. 5, the headrest (11) has a closed loop shape in the front shape, in this example, a substantially trapezoidal base frame (14), and is substantially the same shape as the base frame (14) fitted on the front surface. It consists of a tension frame (15) and a net-shaped tension material (12) stretched on the front side of the tension frame (omitted in FIG. 5).

図6に示すように、基枠(14)の下端部には、その下面中央に長手方向を向く凹溝(14a)を設けることにより、その前後に形成された前垂下片(14b)と後垂下片(14c)とからなる二股部(14d)が形成されている。この二股部(14d)を、後部上枠(13b)に上方より跨嵌することにより、基枠(14)は、後部上枠の中央部に安定するように取り付けられている。そのため、基枠(14)の下部は、後部上枠(13b)と同一曲率をもって平面視において湾曲している。また、凹溝(14a)の内面形状は、後部上枠(13b)の前後面に前垂下片(14b)および後垂下片(14c)が溶接するように、後部上枠(13b)の上部の断面形状と補形をなすように形成されており、これにより、着座者がヘッドレスト(11)に頭を載せたときに、ぐらつきを生じることはない。   As shown in FIG. 6, the lower end portion of the base frame (14) is provided with a concave groove (14a) facing in the longitudinal direction at the center of the lower surface thereof, so that the front hanging piece (14b) formed on the front and rear sides thereof and the rear A bifurcated portion (14d) composed of a hanging piece (14c) is formed. The base frame (14) is attached to the central portion of the rear upper frame in a stable manner by straddling the bifurcated portion (14d) on the rear upper frame (13b) from above. Therefore, the lower part of the base frame (14) is curved in the plan view with the same curvature as the rear upper frame (13b). Further, the inner surface shape of the concave groove (14a) is such that the front hanging piece (14b) and the rear hanging piece (14c) are welded to the front and rear surfaces of the rear upper frame (13b) so that the upper portion of the rear upper frame (13b) is welded. It is formed so as to have a complementary shape with the cross-sectional shape, so that no wobbling occurs when the seated person places his head on the headrest (11).

ヘッドレスト(11)は、背凭れ枠体(13)の後部上枠(13b)に取付けられるため、背凭れに寄りかかった着座者の背中や首の後面側が、基枠(14)の下部に触れることはなく、違和感を覚えたりすることはない。また、ヘッドレスト(11)は、下部中央部が後方に凹入するように湾曲して、背凭れ枠体(13)の後部上枠(13b)に外嵌されるため、前後方向および左右方向の外力に対して強い構造となっている。さらに、後部上枠(13b)に対するヘッドレスト(11)の位置決めも容易である。   Since the headrest (11) is attached to the rear upper frame (13b) of the backrest frame (13), the back side of the seated person leaning against the backrest and the rear side of the neck touch the lower part of the base frame (14). There's nothing, and you don't feel uncomfortable. In addition, the headrest (11) is curved so that the lower center part is recessed backward, and is externally fitted to the rear upper frame (13b) of the backrest frame (13). The structure is strong against external forces. Furthermore, positioning of the headrest (11) with respect to the rear upper frame (13b) is easy.

図3〜図6に示すように、基枠(14)における前垂下片(14b)および後垂下片(14c)、ならびに背凭れ枠体(13)の後部上枠(13b)の中央には、それぞれ前後方向を向く左右1対のボルト挿通孔(16)(16)が穿設されており、これらのボルト挿通孔(16)に、後方からそれぞれボルト(18)を挿通し、それを後部上枠(13b)の前面にあてがった受け板(18)に設けた左右1対のボス部(18a)(18a)内のねじ孔(19)(19)にそれぞれ螺合させることにより、ヘッドレスト(11)は、背凭れ(7)に強固に固着されている。   As shown in FIGS. 3 to 6, in the center of the front hanging piece (14b) and the rear hanging piece (14c) in the base frame (14) and the rear upper frame (13b) of the backrest frame (13), A pair of left and right bolt insertion holes (16), (16) facing in the front-rear direction are drilled, and bolts (18) are inserted through these bolt insertion holes (16) from the rear, respectively, The headrest (11) is screwed into the screw holes (19) and (19) in the pair of left and right bosses (18a) and (18a) provided on the receiving plate (18) applied to the front surface of the frame (13b). ) Is firmly fixed to the backrest (7).

なお、ボルト(17)を螺着した後には、横長のカバープレート(20)を、左右のボルト挿通孔(16)(16)にまたがるように後垂下片(14c)の後面中央に設けた横長の浅い凹部(21)に嵌合し、かつカバープレート(20)の前面に、突設した左右1対の弾性係止爪(20a)(20a)を、後垂下片(14c)の中央に設けた段付係合孔(22)の段部(22a)に係止させることによって、カバープレート(20)により、各ボルト(17)の頭部を覆うようにすると、良好な外観を呈することができる。   After screwing the bolt (17), place the horizontally long cover plate (20) in the center of the rear surface of the rear hanging piece (14c) so as to straddle the left and right bolt insertion holes (16) (16). A pair of left and right elastic locking claws (20a) and (20a) are provided in the center of the rear hanging piece (14c) on the front surface of the cover plate (20). If the head of each bolt (17) is covered with the cover plate (20) by being locked to the step (22a) of the stepped engagement hole (22), a good appearance may be exhibited. it can.

ヘッドレスト(11)を使用しないときは、カバープレート(20)を後垂下片(14c)の後面から外し、それを、図7に示すように、ヘッドレスト(11)が外された後部上枠(13b)の後面中央に予め設けておいた、上記凹部(21)と同様の凹部(23)に嵌合し、かつ、両弾性係止爪(20a)(20a)を、後部上枠(13b)の中央に設けた、上記と同様の段付係合孔(22)の段部(22a)に係止させることにより、カバープレート(20)で左右のボルト挿通孔(16)(16)を覆って、良好な外観を呈することができる。   When the headrest (11) is not used, the cover plate (20) is removed from the rear surface of the rear drooping piece (14c), and the rear upper frame (13b) from which the headrest (11) is removed as shown in FIG. ) Fitted in a recess (23) similar to the recess (21) provided in the center of the rear surface in advance, and both elastic locking claws (20a) (20a) are connected to the rear upper frame (13b). Cover the left and right bolt insertion holes (16), (16) with the cover plate (20) by engaging with the step (22a) of the same stepped engagement hole (22) provided in the center. , Can exhibit a good appearance.

本実施形態のヘッドレスト(11)における張材(12)の張設態様は、以下の通りである。なお、背凭れ(7)における張材(12)の張設態様は、これとは相違するが、その張設態様は本発明には直接関係しないので、その説明を省略する。図1、図3および図4に示すように、張材(12)は、ヘッドレスト(11)の張枠(15)の前面(15a)から外周面(15b)にかけて一定の張力を保って張設され、その周縁部は、張枠(15)の後方周縁部(15c)をも覆っている。張材(12)は、張枠(15)と基枠(14)とを嵌めつける際に(図8〜図10参照)、両者の間に挟み込まれることによって把持されている。   The tension mode of the tension material (12) in the headrest (11) of the present embodiment is as follows. In addition, although the tension | tensile_strength aspect of the tension | tensile_strength material (12) in the backrest (7) is different from this, since the tension | tensile_strength aspect is not directly related to this invention, the description is abbreviate | omitted. As shown in FIG. 1, FIG. 3 and FIG. 4, the tension member (12) is stretched while maintaining a constant tension from the front surface (15a) to the outer peripheral surface (15b) of the tension frame (15) of the headrest (11). The peripheral edge portion also covers the rear peripheral edge portion (15c) of the tension frame (15). When the tension frame (15) and the base frame (14) are fitted (see FIGS. 8 to 10), the tension member (12) is gripped by being sandwiched between them.

図8に詳細に示すように、張材(12)の周縁部には、短寸部(24a)と長寸部(24b)とからなる断面L字形をなす可撓性の縁材(24)が溶着等により固着されている。張枠(15)の後方周縁部(15c)の内側には、前方を向く溝(25)が全周にわたって設けられており、縁材(24)の長寸部(24b)およびこれに固着された張材(12)の縁部が、この溝(25)に挿入されている。   As shown in detail in FIG. 8, a flexible edge member (24) having an L-shaped cross section consisting of a short portion (24a) and a long portion (24b) is formed on the peripheral portion of the tension member (12). Is fixed by welding or the like. A groove (25) facing forward is provided on the inner side of the rear peripheral edge portion (15c) of the tension frame (15), and is fixed to the long portion (24b) of the edge member (24) and to this. The edge of the tension member (12) is inserted into the groove (25).

図5にも示すように、基枠(14)の前面には、前方を向くボス(26)が、また張枠(15)には、これと対応して段付孔(27)が、それぞれ設けられている。ボス(26)には、ねじ孔(28)が設けられており、また弾性変形可能な材料から形成されている筒状ワッシャ(29)の中央には、ねじ挿通孔(30)が形成されている。筒状ワッシャ(29)は、ねじ挿通孔(30)に挿通され、かつボス(26)のねじ孔(28)に止着されるねじ(31)によって、ボス(26)の先端面に締着されている。また、筒状ワッシャ(29)の外周面には、後方に向かって拡開する複数の弾性係止爪(29a)が、円周方向に等間隔をもって設けられている。   As shown in FIG. 5, a front boss (26) is provided on the front surface of the base frame (14), and a stepped hole (27) is provided on the tension frame (15). Is provided. The boss (26) is provided with a screw hole (28), and a screw insertion hole (30) is formed at the center of a cylindrical washer (29) formed of an elastically deformable material. Yes. The cylindrical washer (29) is fastened to the tip surface of the boss (26) by the screw (31) inserted through the screw insertion hole (30) and fastened to the screw hole (28) of the boss (26). Has been. Further, on the outer peripheral surface of the cylindrical washer (29), a plurality of elastic locking claws (29a) that expand toward the rear are provided at equal intervals in the circumferential direction.

張枠(15)の段付孔(27)における前方の大径孔(27a)と後方のが小径孔(27b)との間には、段部(27c)が形成されている。筒状ワッシャ(29)は大径孔(27a)に位置し、その弾性係止爪(29a)の後端が、段部(27c)に係止されることにより、張枠(15)は基枠(14)より前方へ外れるのが阻止されている。   A step portion (27c) is formed between the front large diameter hole (27a) and the rear small diameter hole (27b) in the stepped hole (27) of the tension frame (15). The cylindrical washer (29) is positioned in the large-diameter hole (27a), and the rear end of the elastic locking claw (29a) is locked to the stepped portion (27c). It is prevented from coming forward from the frame (14).

ボス(26)より外側における基枠(14)の外周縁には、前方より凹入する段部(32)が形成されており、この段部(32)が、張材(12)を介して、縁材(24)の短寸部(24a)の後面に当接することにより、縁材(24)及び張材(12)の縁部が、溝(25)から抜け出すのを阻止している。   On the outer peripheral edge of the base frame (14) outside the boss (26), a step portion (32) that is recessed from the front is formed, and this step portion (32) is interposed via a tension member (12). By contacting the rear surface of the short part (24a) of the edge member (24), the edge parts of the edge member (24) and the tension member (12) are prevented from coming out of the groove (25).

以下、図9と図10を参照して、基枠(14)と張枠(15)の組立て、および張材(12)の張設の手順を説明する。両図に示すように、張枠(15)および張材(12)の組み付け、ならびに基枠(14)、ねじ(26)、および筒状ワッシャ(27)の組立ては別個に行い、その後、それらを互いに合体させる。   The procedure for assembling the base frame (14) and the tension frame (15) and tensioning the tension member (12) will be described below with reference to FIGS. As shown in both figures, the assembly of the tension frame (15) and the tension material (12) and the assembly of the base frame (14), the screw (26), and the cylindrical washer (27) are performed separately, and then Unite each other.

まず、図9の矢印(A)で示すように、張枠(15)の前面(15a)から外周面(15b)および後方周縁部(15c)にかけて張材(12)の周縁部を巻き込んで、これに固着された挿入片(24)とともに、張枠(15)の溝(25)に差し入れる。このとき、矢印(B)で示すように、張材(12)は、張枠(15)の後方周縁部(15c)、外周面(15b)、および前面(15a)に密接する。   First, as shown by the arrow (A) in FIG. 9, the peripheral edge of the tension member (12) is wound from the front surface (15a) to the outer peripheral surface (15b) and the rear peripheral edge (15c) of the tension frame (15), Together with the insertion piece (24) fixed to this, it is inserted into the groove (25) of the tension frame (15). At this time, as shown by an arrow (B), the tension member (12) is in close contact with the rear peripheral edge (15c), the outer peripheral surface (15b), and the front surface (15a) of the tension frame (15).

また、図9の矢印(C)で示すように、ねじ(31)を筒状ワッシャ(29)のボルト挿通孔(30)に通し、さらにボス(26)に設けられたねじ孔(28)に螺合させる。   Further, as shown by an arrow (C) in FIG. 9, the screw (31) is passed through the bolt insertion hole (30) of the cylindrical washer (29) and further into the screw hole (28) provided in the boss (26). Screw together.

この結果、図10に示すように、筒状ワッシャ(29)は、その弾性係止爪(29a)が、ボス(26)の外周面から外方にはみ出した状態で、ボス(26)に固定される。   As a result, as shown in FIG. 10, the cylindrical washer (29) is fixed to the boss (26) in a state where the elastic locking claw (29a) protrudes outward from the outer peripheral surface of the boss (26). Is done.

ついで、図10に矢印(D)で示すように、張枠(15)と張材(12)を組み付けたアセンブリ(33)を、基枠(14)のボス(26)、筒状ワッシャ(29)、およびねじ(31)を合体したアセンブリ(34)に前方より押しつける。   Next, as shown by an arrow (D) in FIG. 10, the assembly (33) assembled with the tension frame (15) and the tension material (12) is connected to the boss (26) of the base frame (14) and the cylindrical washer (29). ) And the assembly (34) into which the screw (31) is combined.

すると、まず、小径孔(27b)に、筒状ワッシャ(29)が進入し、その弾性係止爪(29a)は、小径孔(27b)の内面との摺接によって、漸次縮径させられ、それによって、筒状ワッシャ(29)は小径孔(27b)を通過することができる。   Then, first, the cylindrical washer (29) enters the small diameter hole (27b), and the elastic locking claw (29a) is gradually reduced in diameter by sliding contact with the inner surface of the small diameter hole (27b), Thereby, the cylindrical washer (29) can pass through the small diameter hole (27b).

筒状ワッシャ(29)が小径孔(27b)を通過し終えると、弾性係合爪(29a)は、弾性により元の状態に拡開し、その後端が図8に示すように、大径孔(27a)と小径孔(27b)との間の段部(27c)に係合し、筒状ワッシャ(29)を小径孔(27b)を通して引き抜くことはできなくなる。   When the cylindrical washer (29) finishes passing through the small diameter hole (27b), the elastic engagement claw (29a) expands to its original state due to elasticity, and the rear end thereof has a large diameter hole as shown in FIG. The cylindrical washer (29) cannot be pulled out through the small diameter hole (27b) by engaging with the step (27c) between (27a) and the small diameter hole (27b).

本実施形態においては、基枠(14)と張枠(15)の取り付け作業を簡便にするため、図1と図5に示すように、段付孔(27)(したがって、筒状ワッシャ(29))は、上下方向に交互に設け、ねじ止めする筒状ワッシャ(29)の数を、必要最小限としている。   In the present embodiment, in order to simplify the attachment work of the base frame (14) and the tension frame (15), as shown in FIGS. 1 and 5, a stepped hole (27) (and thus a cylindrical washer (29 )) Minimizes the number of cylindrical washers (29) provided alternately in the vertical direction and screwed.

椅子の廃棄時に、材料の分別のため、張材(12)を分離する必要がある場合は、ネット状の張材(12)を通してねじ(31)の位置を確認し、ドライバ等の工具を張材(12)を破りつつ挿入し、ねじ(31)の頭部に当て回して、ねじ(31)とともに筒状ワッシャ(29)をボス(26)から取り外せば、基枠(14)と張枠(15)とを引き離すことができる。したがって、この後、張材(12)の縁部を、挿入片(24)とともに、張枠(15)の溝(25)から引き出すことができる。   If it is necessary to separate the tension material (12) for separating the material when the chair is discarded, check the position of the screw (31) through the net-shaped tension material (12) and tighten a tool such as a screwdriver. Insert the material (12) while tearing it, turn it around the head of the screw (31), and remove the cylindrical washer (29) together with the screw (31) from the boss (26). (15) can be separated. Therefore, thereafter, the edge of the tension member (12) can be pulled out from the groove (25) of the tension frame (15) together with the insertion piece (24).

本発明の一実施形態を備える椅子の正面図である。It is a front view of a chair provided with one embodiment of the present invention. 同じく、側面図である。Similarly, it is a side view. 同じく、椅子上部の背面図である。Similarly, it is a rear view of the chair upper part. 図2のIV−IV線に沿う横断平面図である。FIG. 4 is a transverse plan view taken along line IV-IV in FIG. 2. ヘッドレストの枠体の分解斜視図である。It is a disassembled perspective view of the frame of a headrest. 図3のVI−VI線に沿う断面図である。It is sectional drawing which follows the VI-VI line of FIG. ヘッドレストを用いない場合の図4と同様の部分の断面図である。It is sectional drawing of the part similar to FIG. 4 when not using a headrest. 図6におけるVIII部の拡大断面図である。It is an expanded sectional view of the VIII part in FIG. 同じく、分解断面図である。Similarly, it is an exploded sectional view. 同じく、一部を組み立てた断面図である。Similarly, it is sectional drawing which assembled a part.

符号の説明Explanation of symbols

(1)脚
(2)支柱
(3)支基
(4)キャスタ
(5)枢軸
(6)背凭れ支持杆
(6a)前向部
(6b)起立部
(7)背凭れ
(8)座部
(9)肘フレーム
(9a)起立部
(10)肘掛け
(11)ヘッドレスト
(12)張材
(13)背凭れ枠体
(13a)前部上枠
(13b)後部上枠(横杆)
(14)基枠
(14a)凹溝
(14b)前垂下片
(14c)後垂下片
(14d)二股部
(15)張枠
(15a)前面
(15b)外周面
(15c)後方周縁部
(16)ボルト挿通孔
(17)ボルト
(18)受け板
(18a)ボス部
(19)ねじ孔
(20)カバープレート
(20a)弾性係止爪
(21)凹部
(22)段付係合孔
(22a)段部
(23)凹部
(24)縁材
(24a)短寸部
(24b)長寸部
(25)溝
(26)ボス
(27)段付孔
(27a)大径孔
(27b)小径孔
(27c)段部
(28)ねじ孔
(29)筒状ワッシャ
(29a)弾性係止爪
(30)ねじ挿通孔
(31)ねじ
(32)段部
(33)(34)アセンブリ
(1) Leg
(2) Prop
(3) Support base
(4) Casters
(5) Axis
(6) Back support heel
(6a) Forward part
(6b) Standing part
(7) Backrest
(8) Seat
(9) Elbow frame
(9a) Standing part
(10) Armrest
(11) Headrest
(12) Upholstery
(13) Backrest frame
(13a) Front upper frame
(13b) Rear upper frame (Bubo)
(14) Base frame
(14a) Groove
(14b) Front drooping piece
(14c) Rear drooping piece
(14d) Fork
(15) Tension frame
(15a) Front
(15b) Outer surface
(15c) Rear edge
(16) Bolt insertion hole
(17) Bolt
(18) Back plate
(18a) Boss
(19) Screw hole
(20) Cover plate
(20a) Elastic locking claw
(21) Recess
(22) Stepped engagement hole
(22a) Step
(23) Recess
(24) Edge material
(24a) Short part
(24b) Long dimension
(25) Groove
(26) Boss
(27) Stepped hole
(27a) Large diameter hole
(27b) Small diameter hole
(27c) Step
(28) Screw hole
(29) Cylindrical washer
(29a) Elastic locking claw
(30) Screw insertion hole
(31) Screw
(32) Step
(33) (34) Assembly

Claims (6)

ヘッドレストの下端に左右方向を向く凹溝を設けることにより、ヘッドレストの下端部に前後方向に離間する二股部を形成し、この二股部を、椅子の背凭れにおける上端後部に設けた左右方向を向く横杆に上方より跨嵌して、ヘッドレストの下部を背凭れ枠体に取り付けたことを特徴とする椅子のヘッドレスト取付構造。   By forming a concave groove facing the left and right direction at the lower end of the headrest, a bifurcated portion that is separated in the front-rear direction is formed at the lower end portion of the headrest, and this bifurcated portion faces the left and right direction provided at the rear upper end of the backrest of the chair. A headrest mounting structure for a chair, characterized in that the lower part of the headrest is attached to a backrest frame while being straddled from above. 横杆を、椅子の背凭れ枠体における前部上枠の後面に両端部が結合され、かつ中間部が前記前部上枠より後方に離間した左右方向を向く後部上枠により形成した請求項1記載の椅子のヘッドレスト取付構造。   The recumbent is formed by a rear upper frame facing both the left and right sides with both ends coupled to the rear surface of the front upper frame in the backrest frame of the chair, and the middle part spaced rearward from the front upper frame. 1. A headrest mounting structure for a chair according to 1. 横杆を、背凭れ枠体と一体に形成したことを特徴とする請求項1または2記載の椅子のヘッドレスト取付構造。   The headrest mounting structure for a chair according to claim 1 or 2, wherein the recumbent is formed integrally with the backrest frame. ヘッドレストの基枠の前後方向の厚さを、上部より下部に向かって漸次厚くし、その厚くなった基枠の下部に二股部を形成した請求項1〜3のいずれかに記載の椅子のヘッドレスト取付構造。   The headrest of the chair according to any one of claims 1 to 3, wherein the thickness of the base frame of the headrest in the front-rear direction is gradually increased from the upper part toward the lower part, and a bifurcated portion is formed at the lower part of the thickened base frame. Mounting structure. ヘッドレストの下端に左右方向を向く凹溝を設けることにより、ヘッドレストの下端部に形成された前垂下片と後垂下片とを横杆の前後面に密接し、前垂下片と後垂下片とを、それらの間に横杆を挟んで、互いにボルト締めした請求項1〜3のいずれかに記載の椅子のヘッドレスト取付構造。   By providing a concave groove facing the left and right direction at the lower end of the headrest, the front and rear hanging pieces formed at the lower end of the headrest are brought into close contact with the front and rear surfaces of the recumbent, and the front and rear hanging pieces are The headrest mounting structure for a chair according to any one of claims 1 to 3, wherein a bolt is fastened to each other with a horizontal pin between them. 横杆の後面と後垂下片の後面との互いに対応する部分に、ボルト挿通孔が開口する浅い凹部を設け、ここに前記ボルト挿通孔またはボルトの頭部を覆うカバープレートを着脱自在に嵌合しうるようにした請求項5記載の椅子のヘッドレスト取付構造。
A shallow recess with a bolt insertion hole is provided in the part corresponding to the rear surface of the recumbent and the rear surface of the trailing drooping piece, and the cover plate covering the bolt insertion hole or the bolt head is detachably fitted here. The headrest mounting structure for a chair according to claim 5, wherein the chair headrest mounting structure can be used.
JP2004299237A 2004-10-13 2004-10-13 Chair headrest mounting structure Expired - Fee Related JP4473696B2 (en)

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JP2010505507A (en) * 2006-10-04 2010-02-25 フォームウェイ ファーニチャー リミテッド Chair
JP2011015824A (en) * 2009-07-09 2011-01-27 Kokuyo Co Ltd Chair
JP2013103069A (en) * 2011-11-16 2013-05-30 Itoki Corp Chair
JP2016182905A (en) * 2015-03-26 2016-10-20 株式会社ホンダアクセス Frame member and method for mounting frame member

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JP2010505507A (en) * 2006-10-04 2010-02-25 フォームウェイ ファーニチャー リミテッド Chair
US8888183B2 (en) 2006-10-04 2014-11-18 Formway Furniture Limited Chair
JP2008104521A (en) * 2006-10-23 2008-05-08 Kokuyo Co Ltd Chair and back
JP2011015824A (en) * 2009-07-09 2011-01-27 Kokuyo Co Ltd Chair
JP2013103069A (en) * 2011-11-16 2013-05-30 Itoki Corp Chair
JP2016182905A (en) * 2015-03-26 2016-10-20 株式会社ホンダアクセス Frame member and method for mounting frame member

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