JP2005218534A - Chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair with a simple structure and an easier assembly which enables the obtaining of a buffer action when abutting on a connecting rod as well as a sufficient strength without an increase in weight. <P>SOLUTION: In the chair which has a seat plate 4 turnably mounted on a seat support rod 2c turned horizontally provided on a leg body 2 so as to make the seat plate 4 abut on the connecting rod 2d provided on the front of the seat plate support rod 2c during its use, a reinforcing rod 10 turned in the longitudinal direction of the seat plate 4 is mounted on the rear of the seat plate 4 and turnably mounted on the seat plate support rod 2c. When the seat plate 4 is turned to the position of use, the reinforcing rod 10 is made to abut on the link rod 2d. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、座板を、ほぼ水平の使用位置と、ほぼ垂直の収納位置とに回動可能とした椅子に関する。   The present invention relates to a chair in which a seat plate can be rotated between a substantially horizontal use position and a substantially vertical storage position.

従来、この種の座板が回動できる椅子は、折畳み収納や、ネスティング収納に便利であるため、広く用いられている。すなわち、左右の後脚間に座板を回動自在に取り付け、座板を、使用位置と収納位置とに回動可能としている（例えば、特許文献１参照）。
また、座フレーム、座プレート、クッション体、表皮材からなる座板の構造も開示されている（例えば、特許文献２参照）。
特開２００１−１２８７７５号公報 特開２００１−１２８７７６号公報 2. Description of the Related Art Conventionally, chairs that can rotate this type of seat plate are widely used because they are convenient for folding storage and nesting storage. That is, a seat plate is rotatably attached between the left and right rear legs, and the seat plate can be rotated between a use position and a storage position (see, for example, Patent Document 1).
Moreover, the structure of the seat board which consists of a seat frame, a seat plate, a cushion body, and a skin material is also disclosed (for example, refer patent document 2).
JP 2001-128775 A Japanese Patent Laid-Open No. 2001-128776

しかし、特許文献１および２に記載されているような折畳み椅子では、座板に加わる荷重は剛性のある座プレートのみで受けることになり、荷重に対して充分な強度を得るためには、座プレートを厚くしなければならず、そうすると椅子の重量が大きくなってしまう。さらにまた、座板を使用位置である前側に回動させて前部の連結杆に載せたとき、座板の裏面が連結杆に直接当たり、座板が損傷しやすいという問題があった。   However, in the folding chairs described in Patent Documents 1 and 2, the load applied to the seat plate is received only by the rigid seat plate, and in order to obtain sufficient strength against the load, the seat is used. The plate must be thick, which increases the weight of the chair. Furthermore, when the seat plate is rotated to the front side which is the use position and placed on the front connecting rod, the back surface of the seat plate directly hits the connecting rod, and the seat plate is easily damaged.

本発明は、従来の技術が有する上記のような問題点に鑑み、重量を大きくすることなく充分な強度が得られるとともに、連結杆に当接させたときの緩衝作用も得られるようにした、構造が簡単で、かつ組立てが容易な椅子を提供することを目的としている。   In view of the above-mentioned problems of the conventional technology, the present invention is capable of obtaining a sufficient strength without increasing the weight and also providing a buffering action when brought into contact with the connecting rod. An object of the present invention is to provide a chair that is simple in structure and easy to assemble.

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) 脚体に設けられた左右方向を向く座板支持杆に座板を回動自在に取り付け、使用時に該座板を前記座板支持杆の前部に設けられた連結杆に当接させるようにした椅子において、前記座板の裏面に、座板の前後方向に向く補強杆を取り付け、該補強杆を前記座板支持杆に回動自在に取り付け、前記座板を使用位置に回動させたとき、補強杆が前記連結杆に当接するようにする。 According to the present invention, the above problem is solved as follows.
(1) A seat plate is pivotally attached to a seat plate support rod provided on the leg that faces in the left-right direction, and the seat plate is brought into contact with a connecting rod provided at the front portion of the seat plate support rod when used. In the chair to be mounted, a reinforcing rod facing the front and rear direction of the seat plate is attached to the back surface of the seat plate, the reinforcing rod is rotatably attached to the seat plate support rod, and the seat plate is turned to the use position. When moved, the reinforcing rod comes into contact with the connecting rod.

(２)上記(１)項において、補強杆に上面が開口する軸受孔を形成し、該軸受孔と座板の裏面との間で座板支持杆を回動自在に挾持する。 (2) In the above item (1), a bearing hole whose upper surface is opened is formed in the reinforcing rod, and the seat plate support rod is rotatably supported between the bearing hole and the back surface of the seat plate.

(３)上記(１)または(２)項において、補強杆を硬質合成樹脂により形成し、該補強杆の両側面および背面を金属製カバー部材で覆う。 (3) In the above item (1) or (2), the reinforcing rod is formed of a hard synthetic resin, and both side surfaces and the back surface of the reinforcing rod are covered with a metal cover member.

(ａ)請求項１記載の発明によれば、座板の裏面に補強杆を取り付け、この補強杆を座板支持杆に回動自在に取り付け、座板を使用位置に回動させたとき、補強杆が前部の連結杆に当接するようにした簡単な構造で、補強杆により座板の重量を大きくすることなく強度の向上が図られるとともに、座板を使用位置に回動させた際、補強杆が連結杆に当たり、補強杆以外の座板裏面は連結杆に当たらないため、座板の損傷が防止される。 (a) According to the invention described in claim 1, when the reinforcing rod is attached to the back surface of the seat plate, the reinforcing rod is rotatably attached to the seat plate supporting rod, and when the seat plate is rotated to the use position, With a simple structure in which the reinforcing rod comes into contact with the front connecting rod, the reinforcing rod improves the strength without increasing the weight of the seat plate, and when the seat plate is rotated to the use position. Since the reinforcing rod hits the connecting rod and the back of the seat plate other than the reinforcing rod does not hit the connecting rod, the seat plate is prevented from being damaged.

(ｂ)請求項２記載の発明によれば、補強杆の軸受孔が上方に開口しているので、この軸受孔と座板の裏面との間で座板支持杆を挾持することにより、座板を簡単に座板支持杆に回動自在に取り付けすることができ、組立作業が容易である。 (b) According to the invention described in claim 2, since the bearing hole of the reinforcing rod is opened upward, the seat plate supporting rod is held between the bearing hole and the back surface of the seat plate, so that the seat The plate can be easily attached to the seat plate support rod so as to be rotatable, and the assembling work is easy.

(ｃ)請求項３記載の発明によれば、補強杆を硬質合成樹脂により形成し、該補強杆の両側面および背面を金属製カバー部材で覆うようにしたので、合成樹脂製の補強杆が緩衝の役目をはたすとともに、金属製カバー部材により強度の向上が図れる。 (c) According to the invention described in claim 3, since the reinforcing bar is made of hard synthetic resin and the both side surfaces and the back surface of the reinforcing bar are covered with the metal cover member, the reinforcing bar made of synthetic resin In addition to serving as a buffer, the metal cover member can improve strength.

図１は、本発明の一実施形態の椅子の側面図、図２は、同じく、折畳み時の側面図、図３は、同じく、折畳み時の椅子を前方から見た斜視図である。
同図に示すように、この椅子(Ａ)は、キャスタ(１)付きの脚体(２)と、背もたれ(３)と、座板(４)とを備えている。 FIG. 1 is a side view of a chair according to an embodiment of the present invention, FIG. 2 is a side view when the chair is folded, and FIG. 3 is a perspective view of the chair when the chair is folded.
As shown in the figure, the chair (A) includes a leg (2) with casters (1), a backrest (3), and a seat plate (4).

脚体(２)は、前傾する左右１対の後杆(2a)(2a)と、後杆(2a)(2a)の上端部付近の前部に、上端部が固着された後傾する左右１対の前杆(2b)(2b)と、左右の前杆(2b)(2b)の上端部付近に取り付けられた左右方向を向く座板支持杆(2c)およびその前方の連結杆(2d)とを備えている。座板は、座板支持杆(2c)に回動自在に支持され、使用時には、図１に示すように、連結杆(2d)に当接し、折畳み時には、図２に示すように、上方に回動して背もたれ(３)に当接または近接するようになっている。   The leg (2) is tilted backward with its upper end fixed to the front of the rear heel (2a) (2a) near the upper end of the pair of left and right rear heels (2a) (2a). A pair of left and right foreheads (2b) and (2b), left and right foreboards (2b) and 2b, seat plate support rods (2c) facing in the left and right direction, and front connection rods ( 2d). The seat plate is rotatably supported by the seat plate support rod (2c). When used, the seat plate abuts on the connecting rod (2d) as shown in FIG. 1, and when folded, as shown in FIG. It rotates to come into contact with or close to the backrest (3).

座板(４)は、外周縁に下向の座フレーム部(５)を備える座プレート(６)と、座プレート(６)の表面側に取り付けられたクッション材(７)と、座プレート(６)の裏面側に縦横に取り付けられた低寸の補強リブ(８)と、左右外側寄りに取り付けられた２枚一組の高寸の補強リブ(９)とを備えている。
座板(４)の裏面には、補強リブ(９)に相対向して、前後方向を向く左右２個の補強杆(10)が取り付けられている。 The seat plate (4) includes a seat plate (6) having a seat frame portion (5) facing downward on the outer periphery, a cushion material (7) attached to the surface side of the seat plate (6), and a seat plate ( 6) a low-sized reinforcing rib (8) attached vertically and horizontally on the back side and a pair of high-sized reinforcing ribs (9) attached to the left and right outer sides.
On the back surface of the seat plate (4), two left and right reinforcing rods (10) facing the front and rear direction are attached opposite to the reinforcing rib (9).

図４は、補強杆の分解斜視図、図５は、補強杆の縦断側面図、図６は、図５のＶI矢視図、図７は、図３の円部VIIの一部を破断して示す拡大斜視図である。   4 is an exploded perspective view of the reinforcing rod, FIG. 5 is a longitudinal side view of the reinforcing rod, FIG. 6 is a view taken along the line VI in FIG. 5, and FIG. FIG.

補強杆(10)は、弾性を有する硬質合成樹脂材料で形成されたもので、先端（図５の左端）に行くにしたがって徐々に肉厚が小さくなる断面角形の本体部(10a)を有し、図４に示すように、両側面の上縁に側部突出縁(10b)が、前後両端部には前部突出縁(10c)および下部突出縁(10d)が各々形成され、下面には、浅い凹部(10e)（図５参照）と、複数の取付孔(10f)とが形成されている。補強杆(10)は、取付孔(10f)から挿入される止ねじ(図示せず)をもって、座プレート(６)のボス(６a)にねじ止めされている。   The reinforcing rod (10) is made of an elastic hard synthetic resin material, and has a main body (10a) having a square cross section that gradually decreases in thickness toward the tip (left end in FIG. 5). As shown in FIG. 4, a side protruding edge (10b) is formed on the upper edge of both side surfaces, a front protruding edge (10c) and a lower protruding edge (10d) are formed on both front and rear ends, respectively, A shallow recess (10e) (see FIG. 5) and a plurality of mounting holes (10f) are formed. The reinforcing rod (10) is screwed to the boss (6a) of the seat plate (6) with a set screw (not shown) inserted from the mounting hole (10f).

図４に示すように、金属カバー部材(12)は、補強杆(10)の側部突出縁(10b)、前部突出縁(10c)および後部突出縁(10d)に沿う形状の側板(12a)を有する断面チャンネル状のもので、この金属カバー部材(12)が補強杆(10)の本体部(10a)の凹部(10e)に嵌め込まれ、止ねじ(11)をもって、本体部(10a)に固定されている。これにより、補強杆(10)の本体部(10a)の両側面および背面が金属カバー部材(12)により覆われ、補強されている。   As shown in FIG. 4, the metal cover member (12) includes a side plate (12a) having a shape along the side protruding edge (10b), the front protruding edge (10c), and the rear protruding edge (10d) of the reinforcing rod (10). The metal cover member (12) is fitted in the recess (10e) of the main body (10a) of the reinforcing rod (10) and has a set screw (11), and the main body (10a). It is fixed to. Thereby, both the side surfaces and the back surface of the main body portion (10a) of the reinforcing rod (10) are covered and reinforced by the metal cover member (12).

図４および図５に示すように、補強杆(10)の基部には、座板(15)の裏面側に開口部(13a)を有するＵ字状の軸受孔(13)が形成されている。軸受孔(13)の開口部(13a)は補強リブ(９)に対向しており、軸受孔(13)と補強リブ(９)との間に座板支持杆(2c)が挾持され、これにより、座板(４)は座板支持杆(2c)を中心に回動できるようになっている。   As shown in FIGS. 4 and 5, a U-shaped bearing hole (13) having an opening (13a) on the back side of the seat plate (15) is formed at the base of the reinforcing rod (10). . The opening (13a) of the bearing hole (13) faces the reinforcing rib (9), and a seat plate support rod (2c) is held between the bearing hole (13) and the reinforcing rib (9). Thus, the seat plate (4) can be rotated around the seat plate support rod (2c).

図５および図６に示すように、補強杆(10)の基部（後部）には、軸受孔(13)と交差するように表裏に連通するスリット(14)が形成されている。このスリット(14)の両側壁面には、断面弧状に盛り上がった上下方向を向く第１の弾性リブ(15)が座板(５)の裏面側に向けて形成され、この第１の弾性リブ(15)とほぼ直角をなす位置に、補強杆(10)の長手方向とほぼ平行に延びる第２の弾性リブ(16)が形成されている。座板支持杆(2c)の外周面には、スリット(14)内に突入するようにピン(17)が突設されている。   As shown in FIGS. 5 and 6, a slit (14) communicating with the front and back is formed at the base (rear part) of the reinforcing rod (10) so as to intersect the bearing hole (13). On both side walls of the slit (14), first elastic ribs (15) are formed facing the back side of the seat plate (5) and are raised in the vertical direction. A second elastic rib (16) extending substantially parallel to the longitudinal direction of the reinforcing rod (10) is formed at a position substantially perpendicular to 15). A pin (17) projects from the outer peripheral surface of the seat plate support rod (2c) so as to enter the slit (14).

図２に示すように、座板(５)を上方に回動させると、第１の弾性リブ(15)がピン(17)と接触しながらそれを乗り越えていき、図７に示すように、ピン(17)は節度作用により第１の弾性リブ(15)とスリット(14)の後壁との間の凹溝(18)に落ち込む。これにより、座板(５)は、ピン(17)と第１の弾性リブ(15)との係合により、上方を向く収納位置に安定して保持され、その位置からみだりに動くことはない。   As shown in FIG. 2, when the seat plate (5) is rotated upward, the first elastic rib (15) gets over the pin (17) while contacting it, and as shown in FIG. The pin (17) falls into the concave groove (18) between the first elastic rib (15) and the rear wall of the slit (14) by the moderation action. Thus, the seat plate (5) is stably held in the storage position facing upward by the engagement between the pin (17) and the first elastic rib (15), and does not move from the position.

椅子の使用時には、図１に示すように、座板(５)をほぼ水平の使用位置まで回動させて、補強杆(10)の下面を前部の連結杆(2d)に当接させる。この際には、図５に示すように、第２の弾性リブ(16)がピン(17)を乗り越え、ピン(17)の下側面に係合する。したがって、例えば、椅子から立ち上がった際等に座板(５)が跳ね上がるのが防止される。ただし、静止時には、座板(５)はその重力で前部の連結杆(2d)に載置された状態を保っているので、第２の弾性リブ(15)は必ずしも設けなくてもよい。   When the chair is used, as shown in FIG. 1, the seat plate (5) is rotated to a substantially horizontal use position, and the lower surface of the reinforcing rod (10) is brought into contact with the front connecting rod (2d). At this time, as shown in FIG. 5, the second elastic rib (16) gets over the pin (17) and engages the lower surface of the pin (17). Therefore, for example, the seat plate (5) is prevented from jumping up when standing up from the chair. However, since the seat plate (5) is placed on the front connecting rod (2d) by its gravity when stationary, the second elastic rib (15) is not necessarily provided.

上記実施形態では、弾性リブ(15)(16)をスリット(14)の両側面に形成しているが、片面だけでもよい。また、補強杆(10)を座板(４)の補強杆と兼用しているが、これに限定されず、例えば、支持専用の部材を、座フレーム(５)あるいは座プレート(６)等の任意の箇所に固着した構造でもよい。   In the above embodiment, the elastic ribs (15) and (16) are formed on both side surfaces of the slit (14), but only one side may be used. Further, although the reinforcing rod (10) is also used as the reinforcing rod of the seat plate (4), the present invention is not limited to this. For example, a member dedicated to support is used such as the seat frame (5) or the seat plate (6). A structure fixed to an arbitrary location may be used.

また、座板支持杆(2c)の補強杆(10)との当接部分に、合成樹脂製の緩衝材(19)を取り付けておくと、座板(4)を使用位置に回動させた際の衝撃を緩和することができ、かつ、補強杆(10)および連結杆(2d)の摩耗損傷を防止できる。   Also, if the cushioning material (19) made of synthetic resin is attached to the contact portion of the seat plate support rod (2c) with the reinforcement rod (10), the seat plate (4) is rotated to the use position. Impact can be mitigated, and wear damage of the reinforcing rod (10) and the connecting rod (2d) can be prevented.

本発明の一実施形態の使用状態の側面図である。It is a side view of the use condition of one Embodiment of this invention. 同じく、折畳み時の側面図である。Similarly, it is a side view at the time of folding. 同じく、折畳み時の椅子を前方から見た斜視図である。Similarly, it is the perspective view which looked at the chair at the time of folding from the front. 同じく、補強杆の分解斜視図である。Similarly, it is an exploded perspective view of a reinforcing rod. 同じく、補強杆の縦断側面図である。Similarly, it is a vertical side view of a reinforcing rod. 同じく、図５のＶI矢視図である。Similarly, it is a VI arrow view of FIG. 同じく、図３の円部VIIの一部を破断して示す拡大斜視図である。Similarly, it is an enlarged perspective view showing a part of a circle VII in FIG.

符号の説明Explanation of symbols

(Ａ)椅子
(１)キャスタ
(２)脚体
(2a)後杆
(2b)前杆
(2c)座板支持杆
(2d)連結杆
(３)背もたれ
(４)座板
(５)座フレーム部
(６)座プレート
(6a)ボス
(７)クッション材
(８)補強リブ
(９)補強リブ
(10)補強杆
(10a)本体部
(10b)側部突出縁
(10c)前部突出縁
(10d)後部突出縁
(10f)取付孔
(11)止ねじ
(12)金属製カバー部材
(13)軸受孔
(13a)開口部
(14)スリット
(15)第１の弾性リブ
(16)第２の弾性リブ
(17)ピン
(18)凹溝
(19)緩衝材 (A) Chair
(1) Casters
(2) Leg
(2a) Rear end
(2b) outpost
(2c) Seat plate support rod
(2d) Linkage
(3) Backrest
(4) Seat plate
(5) Seat frame
(6) Seat plate
(6a) Boss
(7) Cushion material
(8) Reinforcement rib
(9) Reinforcement rib
(10) Reinforcing rod
(10a) Main unit
(10b) Side protruding edge
(10c) Front protruding edge
(10d) Rear protruding edge
(10f) Mounting hole
(11) Set screw
(12) Metal cover member
(13) Bearing hole
(13a) Opening
(14) Slit
(15) First elastic rib
(16) Second elastic rib
(17) Pin
(18) Concave groove
(19) cushioning material

Claims (3)

脚体に設けられた左右方向を向く座板支持杆に座板を回動自在に取り付け、使用時に該座板を前記座板支持杆の前部に設けられた連結杆に当接させるようにした椅子において、
前記座板の裏面に、座板の前後方向に向く補強杆を取り付け、該補強杆を前記座板支持杆に回動自在に取り付け、前記座板を使用位置に回動させたとき、補強杆が前記連結杆に当接するようにしたことを特徴とする椅子。 A seat plate is rotatably attached to a seat plate support rod provided on the leg body and facing the left-right direction, and the seat plate is brought into contact with a connecting rod provided at a front portion of the seat plate support rod when used. In the chair
A reinforcing rod is attached to the back surface of the seat plate in the front-rear direction of the seat plate, the reinforcing rod is rotatably attached to the seat plate support rod, and the reinforcing plate is rotated to the use position. The chair is configured to abut against the connecting rod. 補強杆に上面が開口するの軸受孔を形成し、該軸受孔と座板の裏面との間で座板支持杆を回動自在に挾持したことを特徴とする請求項１記載の椅子。   2. The chair according to claim 1, wherein a bearing hole having an upper surface is formed in the reinforcing rod, and a seat plate support rod is rotatably supported between the bearing hole and the back surface of the seat plate. 補強杆を硬質合成樹脂により形成し、該補強杆の両側面および背面を金属製カバー部材で覆ったことを特徴とする請求項１または２記載の椅子。
The chair according to claim 1 or 2, wherein the reinforcing rod is formed of a hard synthetic resin, and both side surfaces and the back surface of the reinforcing rod are covered with a metal cover member.

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