JP5088847B2 - Chair - Google Patents

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JP5088847B2
JP5088847B2 JP2006067676A JP2006067676A JP5088847B2 JP 5088847 B2 JP5088847 B2 JP 5088847B2 JP 2006067676 A JP2006067676 A JP 2006067676A JP 2006067676 A JP2006067676 A JP 2006067676A JP 5088847 B2 JP5088847 B2 JP 5088847B2
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buttocks
seated person
chair
seating
support
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JP2007244409A (en
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寿賀 廣里
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寿賀 廣里
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本発明は、着座時に着座者の背骨が自然に伸びて姿勢よく座ることができる構造を備えた椅子に関する技術である。   The present invention relates to a chair having a structure that allows a seated person's spine to naturally stretch and sit in a good posture when seated.
椅子は、仕事時や勉強時に着座者が長時間にわたり疲労感を少なくして座ることができる構造を備えて形成されており、その用途に応じて脚付きの腰掛けタイプのものと、座椅子と称される脚のない和室向けのものとがある。   The chair is formed with a structure that allows a seated person to sit down for a long time with less fatigue when working or studying. There is something for Japanese-style rooms without legs called.
ところで、電車内で座席への着座者の座り方をみていると、脚を投げ出して姿勢悪く座っている光景をよく目にする。このような着座姿勢の悪さは、尾てい骨側が着座面に対する支点となっていることに由来するものであり、その結果、骨盤が寝て背骨が不自然に曲がってしまうことになる。   By the way, when I see how a seated person sits down on a train, I often see the scene of sitting in a poor posture by throwing out my legs. Such poor sitting posture is derived from the fact that the tail bone side is a fulcrum with respect to the seating surface, and as a result, the pelvis sleeps and the spine bends unnaturally.
下記特許文献1には、背骨を自然に伸ばして姿勢よく腰掛けることができるようにした椅子が開示されている。
特許第3733369号公報
The following Patent Document 1 discloses a chair that allows a user to sit down with a good posture by naturally stretching the spine.
Japanese Patent No. 3733369
上記特許文献1に開示されている椅子は、左右に分かれた着座部に対応させて着座者の左右の座骨を中心とした臀部の二点を座面に接触させることで、骨盤を座面に対して垂直方向に立たせるような状態で座らせることができるようになっている。   In the chair disclosed in Patent Document 1, the pelvis is placed on the seat surface by bringing the seat surface into contact with two points of the buttocks centered on the left and right seat bones of the seated person in correspondence with the seat portion divided into left and right. On the other hand, it is possible to sit in a state where it stands vertically.
しかも、上記特許文献1の椅子は、着座者の膝を着座部の外方に向けて開脚できるように、膝から大腿部を支える着座分の前側部を、大腿部から臀部を支える着座部の後側部に対して小さくして形成されている。   And the chair of the above-mentioned patent document 1 supports the front side part of the seating part which supports a thigh from a knee, and can support a buttock from a thigh so that a seated person's knee can be opened toward the outside of a seating part. The seat portion is formed smaller than the rear side portion.
ところで、上記特許文献1に開示されている椅子による場合には、背骨を伸ばして姿勢よく腰掛けることはできるものの、構造が複雑で製品コストがそれだけ高くなるほか、着座者の体格の関係で対応箇所を微調整した上で開脚姿勢のもとで腰掛けなければならず、必ずしも使い勝手のよいものとはいえない不都合があった。 By the way, in the case of the chair disclosed in the above-mentioned Patent Document 1, it is possible to sit down with a good posture by extending the spine, but the structure is complicated and the product cost is increased accordingly, and it corresponds to the physique of the seated person There is an inconvenience that it is not always easy to use because it is necessary to finely adjust the position and sit down under the open leg posture.
本発明は、特許文献1に示されている椅子を含む従来技術にみられた上記課題に鑑み、構造が簡単であるばかりでなく、座骨を支点として着座者が座る中で、骨盤が自然に立って背骨を自然に伸ばすことができるようにして座ることができる使い勝手のよい椅子を提供することを目的とする。   In view of the above-mentioned problems found in the prior art including the chair shown in Patent Document 1, the present invention is not only simple in structure, but also the pelvis naturally sits while the seated person sits on the seat bone as a fulcrum. It is an object to provide an easy-to-use chair that can be stood and allowed to sit with its spine stretched naturally.
本発明は、上記目的を達成すべくなされたものであり、着座者が臀部側を載せて座る着座体と、該着座体に前記着座者が座った際にその背面側を支持すべく固定配置されている背もたれ部とを少なくとも備えてなる椅子において、前記着座体は、左右一対の支腕部と、これらの支腕部相互間に平行に架け渡して配列される桟幅がいずれも4cmである前列尻当て桟部と中間尻当て桟部と後列尻当て桟部とを備え、前記前列尻当て桟部と前記中間尻当て桟部とは、比較的大柄な体格の前記着座者が前記背面側を前記背もたれ部に支持させて座った際に正しい着座姿勢を維持させるべく、該着座者の左右一対の座骨部位の位置と対応させてその姿勢保持が自在な2.5cm幅の空隙を、前記中間尻当て桟部と前記後列尻当て桟部とは、比較的小柄な体格の前記着座者が前記背面側を前記背もたれ部に支持させて座った際に正しい着座姿勢を維持させるべく、該着座者の左右一対の座骨部位の位置と対応させてその姿勢保持が自在な2.5cm幅の空隙をそれぞれ介在させて、一対の前記支腕部に各別に固着配置したことを最も主要な特徴とする。 The present invention has been made to achieve the above object, and a seating body on which a seated person sits on the buttock side, and a fixed arrangement for supporting the back side when the seated person sits on the seating body. In the chair comprising at least a backrest portion, the seating body has a pair of left and right support arms and a crosspiece width arranged in parallel between the support arms is 4 cm. A front row butting bar part, a middle butting bar part, and a rear row butting bar part, wherein the front row butting bar part and the middle butting bar part have a relatively large physique for the seated person In order to maintain the correct sitting posture when sitting with the backrest supported on the backrest portion, a 2.5 cm wide gap that can freely maintain the posture corresponding to the position of the pair of left and right seat bones of the seated person, The middle buttocks and the back row buttocks are relatively small To the seated person physique to maintain the correct sitting posture when sitting by supporting the back side of the backrest portion, the posture held freely in correspondence with the position of the pair of right and left ischial sites seated person The most important feature is that each of the pair of supporting arms is fixedly arranged with a space of 2.5 cm width interposed therebetween.
この場合、尻当て桟部には、着座者の臀部形状に沿わせるべくその長さ方向に沿わせて形成された凹曲部と、着座時に前記座骨部位側を円滑に保持させるべくその上角部に形成された曲面部とを具備させておくのが好ましい。 In this case, each buttocks support crosspiece is provided with a concave curved portion formed along the length direction so as to follow the shape of the buttock of the seated person, and further on the seatbone side so as to smoothly hold the seat bone side when seated. It is preferable to provide curved surface portions formed at the corners.
た、前記着座体は、着座者による腰掛けを自在とすべく支脚体を介して支持させるのが望ましい。この場合、前記支脚体は、折り畳み自在に形成することもできる。 Also, the seating body, cause supported through a support leg body so as to freely the stool by the seated person is desirable. In this case, the support leg can be formed to be foldable.
本発明によれば、着座体を構成している桟幅がいずれも4cmである前列尻当て桟部と中間尻当て桟部とは、固定配置されている背もたれ部に比較的大柄な体格の着座者がその背面側を支持させて座った際に、左右一対の座骨部位の保持が自在な2.5cm幅の空隙を介在させて配列されているので、これらの尻当て桟部上に着座した際に、各座骨部位が支点となって骨盤を立たせることにより背骨が自然に伸びた状態となって常に姿勢よく座ることができ、腰痛防止対策に有効に寄与させることができる。また、着座体を構成している桟幅がいずれも4cmである中間尻当て桟部と後列尻当て桟部とは、固定配置されている背もたれ部に比較的小柄な体格の着座者がその背面側を支持させて座った際に、左右一対の座骨部位の保持が自在な2.5cm幅の空隙を介在させて配列されているので、これらの尻当て桟部上に該着座者が着座した際に、各座骨部位が支点となって骨盤を立たせることにより背骨が自然に伸びた状態となって常に姿勢よく座ることができ、腰痛防止対策に有効に寄与させることができる。 According to the present invention , the front-row buttocks and the intermediate buttocks that are 4 cm in width constituting the seating body are seated with a relatively large physique on the backrest that is fixedly arranged. When a person sits with the back side supported, they are arranged with a space of 2.5 cm width that can freely hold a pair of left and right seat bones, so they sit on these buttocks. At this time, by standing each pelvis part as a fulcrum and standing the pelvis, the spine is in a naturally stretched state and can always sit in a good posture, which can effectively contribute to measures for preventing back pain. In addition, the middle buttocks and the back row butting bars , both of which are 4 cm in width , constituting the seating body, have a relatively small physique seated on the backrest that is fixedly placed. When sitting with the side supported, the seat is seated on these buttocks, since they are arranged with a gap of 2.5 cm width that can hold the pair of left and right seat bones freely. At this time, by standing each pelvis part as a fulcrum and standing the pelvis, the spine is in a naturally stretched state and can always sit in a good posture, which can effectively contribute to measures for preventing back pain.
図1は、本発明の一例を示す全体斜視図であり、図2は、図1に示す例の右側面図である。また、図3は、図1とは反対方向からみた際の要部斜視図を、図4は、図1に示す例の不使用時における折り畳んだ状態での全体斜視図をそれぞれ示す。   FIG. 1 is an overall perspective view showing an example of the present invention, and FIG. 2 is a right side view of the example shown in FIG. 3 is a perspective view of a main part when viewed from the opposite direction to FIG. 1, and FIG. 4 is an overall perspective view of the example shown in FIG. 1 in a folded state when not in use.
これらに図によれば、折り畳みが自在に形成された椅子11は、例えば図5に示されているように着座者Mが腰掛ける着座体12と、該着座体12を支持する支脚体22とで、その全体が構成されている。   According to these figures, the chair 11 that can be folded freely includes, for example, a seat body 12 on which a seated person M sits and a support leg body 22 that supports the seat body 12 as shown in FIG. The whole is composed.
このうち、着座体12は、左右一対の支腕部13,13と、これら支腕部13,13相互間に平行に架け渡されて固着配置された前列尻当て桟部14と中間尻当て桟部15と後列尻当て桟部16と、同様にして固着配置された前横桟部17と、該前横桟部17と前列尻当て桟部14との間に配設された中横桟部18とを備えて形成されている。なお、左右一対の支腕部13,13は、その奥端側が自由端となった開放端部13a,13aとして形成されている。また、該開放端部13aは、後述する後脚部材33の上横支柱部36にその下方側から当接して係止させることができる長さを付与して形成されている。 Among these, the seating body 12 includes a pair of left and right support arms 13, 13, a front row buttocks support 14 and an intermediate buttocks that are fixedly arranged so as to be spanned in parallel between the support arms 13 and 13. the parts 15 and rear hip rest rail section 1 6, the crossbar portion 17 before secured arranged in the same manner, the horizontal bar that is disposed between the front crossbar portion 17 and the front row hip rest rail 14 And a portion 18. Note that the pair of left and right support arms 13 and 13 are formed as open ends 13a and 13a whose rear ends are free ends. Further, the open end portion 13a is formed with a length that can be brought into contact with and locked to an upper horizontal column portion 36 of a rear leg member 33, which will be described later, from below.
この場合、各尻当て桟部14,15,16は、着座者Mに対し正しい着座姿勢を維持させるべく、該着座者Mの左右一対の座骨部位Bの位置と対応させてその姿勢保持が自在な適宜間隔の空隙tを介在させて配列されている。   In this case, in order to maintain the correct sitting posture of the seat occupant M, each of the buttocks support bars 14, 15, and 16 can freely maintain the posture corresponding to the position of the pair of left and right sciatic bone parts B of the seat occupant M. The gaps t are arranged at appropriate intervals.
具体的には、各尻当て桟部14,15,16は、それぞれが4cm前後の桟幅を有し、相互の空隙tが2.5cm前後となるようにして平行に配列されている。また、各尻当て桟部14,15,16は、左右一対の支腕部13,13の上面よりもその面高が高くなって突出するようにして固着配置されている。さらに、前列尻当て桟部14の先端から前横桟部17の先端までの距離は、14cm前後となるようにして位置固定されている(つまり、中間尻当て桟部15の中心位置から前横桟部17の先端までの距離が22.5cm前後となる。)。 Specifically, each of the butting pad portions 14, 15, and 16 has a beam width of about 4 cm, and is arranged in parallel so that the gap t is about 2.5 cm. Further, each of the buttocks support bars 14, 15, 16 is fixedly disposed so as to protrude with a height higher than the upper surfaces of the pair of left and right support arms 13, 13. Furthermore , the distance from the front end of the front row butting bar portion 14 to the front edge of the front horizontal bar portion 17 is fixed so as to be around 14 cm (that is, from the center position of the intermediate butting bar portion 15 to the front side. The distance to the tip of the crosspiece 17 is about 22.5 cm.)
また、各尻当て桟部14,15,16は、着座者Mの臀部Hの形状に沿わせるべくその長さ方向に形成された凹曲部14a,15a,16aと、着座時に座骨部位B側を円滑に間隔t内に落とし込むようにして保持させるべく、その上角部に形成された曲面部14b,15b,16bとを備えている。   Further, each of the buttocks 14, 15, and 16 is provided with concavely-curved portions 14 a, 15 a, and 16 a that are formed in the length direction so as to conform to the shape of the buttocks H of the seated person M, Is provided with curved surface portions 14b, 15b, 16b formed at the upper corners thereof so as to be smoothly dropped into the interval t.
一方、支脚体22は、着座体12における一対の支腕部13,13側を各別に軸支する前脚部材23と、該前脚部材23に連結されて着座体12側を支持する後脚部材33とで構成されている。   On the other hand, the support leg body 22 includes a front leg member 23 that pivotally supports the pair of support arm portions 13 and 13 of the seat body 12 and a rear leg member 33 that is connected to the front leg member 23 and supports the seat body 12 side. It consists of and.
このうち、前脚部材23は、一対の支腕部13,13側のやや奥寄りの中間位置に対し外側から各別にボルト・ナット等の支軸材42を介して軸支される左右一対の長寸縦支柱部24,24と、これら長寸縦支柱部24,24の下端側に架け渡された横支柱部25と、長寸縦支柱部24,24の上端側に架け渡された背もたれ部26とで、その全体が略囲枠状を呈するようにして形成されている。この場合における長寸縦支柱部24の支腕部13側への軸支は、その全長の1/2よりはやや長さが短い奥寄り位置を介して行われることになる。   Among these, the front leg member 23 is a pair of left and right long shafts that are pivotally supported from the outside via a support shaft material 42 such as a bolt and a nut with respect to the middle position on the side of the pair of support arms 13 and 13 slightly closer to the back. Long vertical struts 24, 24, horizontal struts 25 spanned on the lower ends of these long vertical struts 24, 24, and backrests spanned on the upper ends of the long vertical struts 24, 24 26, and the whole is formed so as to exhibit a substantially frame shape. In this case, the axial support of the long vertical column portion 24 toward the support arm portion 13 side is performed via a back position that is slightly shorter than ½ of the total length.
しかも、前脚部材23における各長寸縦支柱部24は、支軸材42の位置と長さ方向での頂端24aとの間の長さの略1/2弱の長さ位置に後方に向けて突出させた突片27aを有する連結部材27を備えており、突片27aを介して後脚部材33側を回動自在に連結することができるようになっている。   Moreover, each of the long vertical struts 24 in the front leg member 23 is directed rearward to a position that is approximately less than half the length between the position of the support shaft member 42 and the top end 24a in the length direction. A connecting member 27 having a protruding piece 27a is provided, and the rear leg member 33 side can be rotatably connected via the protruding piece 27a.
前脚部材23側と突片27aを介して連結される後脚部材33は、左右一対の短寸縦支柱部34,34と、これら短寸縦支柱部34,34相互の上側部寄りの位置に架け渡された上横支柱部36と、短寸縦支柱部34,34の下端側に架け渡された下横桟部37とで形成されている。   The rear leg member 33 connected to the front leg member 23 side through the projecting piece 27a is located at a position near the upper side of the pair of left and right short vertical column portions 34 and 34 and the short vertical column portions 34 and 34. It is formed of an upper horizontal strut portion 36 spanned and a lower horizontal crosspiece portion 37 spanned on the lower end side of the short vertical strut portions 34 and 34.
このうち、各短寸縦支柱部34は、それぞれの頂端部34aに縦割り方向に向かうスリット溝35が形成されており、該スリット溝35を介して導入される連結部材27の突片27aを支軸材43を介して軸支することで、長寸縦支柱部24に対し回動自在に連結されている。   Among these, each short vertical column 34 is formed with a slit groove 35 extending in the vertical direction at the top end 34 a, and the projecting piece 27 a of the connecting member 27 introduced through the slit groove 35. By being pivotally supported via a support shaft member 43, it is rotatably connected to the long vertical column portion 24.
しかも、各短寸縦支柱部34は、上横支柱部36の下方に位置するそれぞれの対向面側に折り畳むために必要な適宜長さのガイド溝38がその長さ方向に沿わせて刻入されており、各ガイド溝38内に各支腕部13の開放端部13aにて左右の外方向に向けて突出させた係止杆19を導入することができるようになっている。   In addition, each short vertical column 34 is engraved with a guide groove 38 of an appropriate length necessary for folding on the opposite surface side located below the upper horizontal column 36 along the length direction. Thus, the locking rod 19 that protrudes in the left and right outward directions at the open end 13a of each support arm portion 13 can be introduced into each guide groove 38.
この場合における前脚部材23と後脚部材33との配置関係は、図2に示すように使用時の状態を右側面方向からみると、長寸縦支柱部24と短寸縦支柱部34とで略「人」の文字を呈するようにして組み合わされている。また、その際における着座体12は、前横桟部17の位置が地上から例えば34cm前後で、支腕部13の開放端部13a側の位置が例えば地上から30cm前後となるようにして前上がりとなるようにして支脚体22側に組み合わされることになる。   In this case, the arrangement relationship between the front leg member 23 and the rear leg member 33 is as shown in FIG. The characters are combined so as to present the letter “person”. In addition, the seating body 12 at this time is lifted forward so that the position of the front crosspiece 17 is about 34 cm from the ground, for example, and the position of the support arm 13 on the open end 13a side is, for example, about 30 cm from the ground. In this way, it is combined with the support leg 22 side.
次に、上記構成からなる椅子11の作用・効果を説明すれば、不使用時には、図4に示すように折り畳んだ状態で仕舞い勝手よく保管しておくことができる。使用に際しては、背もたれ部26を一方の手で把持して持ち上げ、他方の手で着座体12の前横桟部17を持って下方へと引き下ろすことで、直ちに図1ないし図3に示す状態とすることができる。   Next, the operation and effect of the chair 11 having the above configuration will be described. When the chair 11 is not used, it can be stored in a folded state as shown in FIG. In use, the backrest 26 is grasped and lifted with one hand, and with the other hand, the front crosspiece 17 of the seating body 12 is pulled down and the state shown in FIGS. 1 to 3 immediately. It can be.
使用する際のこのような一連の円滑な動きは、支腕部13と長寸縦支柱材24との軸支構造、長寸縦支柱材24と短寸縦支柱部34との軸支構造、支腕部13の開放端部13aと後脚部材33の上横桟部36との係合構造および支腕部13の開放端部13aが備える係止杆19と短寸縦支柱部34のガイド溝38との案内構造がそれぞれ協働することでもたらされるものである。   Such a series of smooth movements when used are the shaft support structure of the support arm portion 13 and the long vertical support member 24, the shaft support structure of the long vertical support member 24 and the short vertical support member 34, Engagement structure between the open end 13a of the support arm 13 and the upper horizontal cross section 36 of the rear leg member 33, and a guide for the locking rod 19 and the short vertical column 34 provided in the open end 13a of the support arm 13 The guide structure with the groove 38 is brought about by cooperating with each other.
図5は、椅子11に着座者Mが腰掛けた際の状態を示す右側面図であり、各尻当て桟部14,15,16は、左右一対の支腕部13,13の上面よりもその面高が高くなって突出するようにして位置固定されているので、比較的大柄な体格の着座者Mが図5に示すようにその背面側を背もたれ部26に支持させて座った際には、臀部Hが主に前列尻当て桟部14と中間尻当て桟部15とに載置される。その結果、着座者Mの座骨部位Bは、図5に示されているように尻当て桟部14と尻当て桟部15との間に位置する空隙t上に位置することになる。 FIG. 5 is a right side view showing a state where the seated person M is seated on the chair 11, and each of the buttocks support bars 14, 15, 16 is more than the upper surfaces of the pair of left and right support arms 13, 13. Since the position is fixed so that the height of the face protrudes, when a seated person M of a relatively large physique sits with the back side supported by the backrest portion 26 as shown in FIG. , buttock H is mainly placed on the middle Mashiri against the crosspiece 15 and the front row hip rest rail 14. As a result, the seated bone portion B of the seated person M is positioned on the gap t located between the buttocks padding portion 14 and the butting pads 15 as shown in FIG.
しかも、この際における着座者Mの左右の座骨部位Bは、前列尻当て桟部14と中間尻当て桟部15との間の空隙t内に位置する支点となる結果、臀部Hが滑って姿勢を乱すようなことをなくして骨盤を立たせ、背骨が自然にまっすぐに伸びた状態となった正しい着座姿勢を維持させることができることになる。 In addition, the left and right seat bone parts B of the seated person M at this time become a fulcrum located in the gap t between the front row buttocks padding part 14 and the intermediate butting pad part 15, and as a result, the buttocks H slide and posture It is possible to maintain the correct sitting posture in which the pelvis is raised without disturbing the body and the spine is naturally stretched straight.
また、着座体12は、前上がりに傾斜しているので、着座者が着座する際に自然に所定位置に座ることができる。さらに、尻当て桟部14,15,16は、凹曲部14a,15a,16aと、曲面部14b,15b,16bとを備えているので、座り心地をよくするなかで、着座時に座骨部位B側を円滑に空隙t上へと案内することができることになる。 Moreover, since the seating body 12 is inclined upwardly, it can naturally sit at a predetermined position when the seated person sits down. Further, each of the buttocks 14, 15, 16 includes concavely curved portions 14 a, 15 a, 16 a and curved surfaces 14 b, 15 b, 16 b, so that the sitting position is improved when sitting while improving the sitting comfort. The B side can be smoothly guided onto the gap t.
一方、図5の場合とは異なり、比較的小柄な体格の着座者Mがその背面側を背もたれ部26に支持させた状態で臀部Hを着座体12に載せて座った際、その座骨部位Bが中間尻当て桟部15と後列尻当て桟部16との間に位置する空隙t内に位置することになり、同様にして常に正しい着座姿勢を維持させることができることになる。 On the other hand, unlike the case of FIG. 5, when a seated person M having a relatively small physique sits with the buttocks H placed on the seated body 12 with the back side supported by the backrest part 26, the seat bone part B There will be located in the gap t that is located between the middle Mashiri abutting the crosspiece 15 and the rear hip rest rail 16, so that it is possible to always maintain the correct seated posture in the same manner.
また、前脚部材23は、背もたれ部26を備えているので、着座時における着座者Mの背中を支えることで、着座姿勢をより安定的に維持させることができる。なお、着座者Mは、1日に数回、着座体12に座ってその都度、座骨部位Bを支点とする正しい着座姿勢を取り戻すことでこれを習慣付けることができるので、腰痛発生原因の一つである姿勢の悪さを効果的に改善することができる。   Further, since the front leg member 23 includes the backrest portion 26, the sitting posture can be more stably maintained by supporting the back of the seated person M at the time of sitting. In addition, since the seated person M can make this a habit by sitting on the seating body 12 several times a day and regaining the correct sitting posture with the sciatic site B as a fulcrum each time, it is one of the causes of low back pain. It is possible to effectively improve the poor posture.
以上は、本発明を図示例に基づいて説明したものであり、その具体的な内容は、本発明の要旨を逸脱しない限り、種々の変形を加えることができる。例えば、図示例には、背もたれ部を備えた折り畳み式の椅子が示されているが、3〜5本の支脚を備えた背もたれ部付きの椅子のほか、背もたれ部付きの着座体のみからなる単なる座椅子構造の椅子であってもよい。 The above is the description of the present invention based on the illustrated examples, and various modifications can be made to the specific contents without departing from the gist of the present invention. For example, in the illustrated example, although the chair folding having a backrest portion are shown, in addition of the back portion with Kino chair with a three to five support leg, the seating member with a backrest Mikara It may be a simple chair structure chair.
また、本発明は、自動車の運転席等のシートや劇場等の座席等を含む着座体を有するすべての椅子に適用することができる汎用性を備えている。さらに、比較的長時間に亘り着座する必要がある場合には、着座体の尻当て桟部における少なくとも臀部側と接触する面に、例えばやや硬くした低反発性クッション体を含む適宜のクッション材を配設することで、着座時における使用感をより好ましいものとすることもできる。 In addition, the present invention has versatility that can be applied to all chairs having a seat including a seat such as a driver's seat of an automobile and a seat of a theater. Further, when it is necessary to sit for a relatively long time, an appropriate cushion material including a slightly hardened low-rebound cushion body, for example, on the surface that contacts at least the buttocks side of each buttocks portion of the seating body By disposing, the feeling of use at the time of sitting can be made more preferable.
また、尻当て桟部14,15,16は、所望に応じ、図示例のような凹曲部14a,15a,16aを有しない平坦なものとしたり、曲面部14b,15b,16bを設けない角柱状に形成することもできる。本発明の構成部材は、木材、合成樹脂材および金属材のいずれか、もしくはそのいずれかと組み合わせて用いることもできる。さらに、着座体12は、図示例のような前上がりの傾斜を付与することなく、略水平な座面を形成して配置することもできる。 Further, each buttocks support bar portion 14, 15, 16 is flat without the concave curved portions 14a, 15a, 16a as shown in the illustrated example, or is not provided with the curved surface portions 14b, 15b, 16b. It can also be formed in a prismatic shape. The constituent member of the present invention can be used in combination with any one of wood, a synthetic resin material, and a metal material, or any of them. Furthermore, the seating body 12 can also be arranged by forming a substantially horizontal seating surface without imparting a forwardly rising inclination as in the illustrated example.
本発明の一例を示す全体斜視図。The whole perspective view which shows an example of this invention. 図1に示す例の右側面図。The right view of the example shown in FIG. 図1とは反対方向からみた際の要部斜視図。The principal part perspective view at the time of seeing from the direction opposite to FIG. 図1に示す例の不使用時の折り畳んだ状態での全体斜視図。The whole perspective view in the folded state at the time of non-use of the example shown in FIG. 椅子に比較的大柄な着座者が腰掛けた際の状態を示す右側面図。The right view which shows the state at the time of the comparatively large seated person sitting on the chair.
11 椅子
12 着座体
13 支腕部
13a 開放端部
14 前列尻当て桟部
15 中間尻当て桟部
16 後列尻当て桟部
14a,15a,16a 凹曲部
14b,15b,16b 曲面部
17 前横桟部
18 中横桟部
19 係止杆
22 支脚体
23 前脚部材
24 長寸縦支柱部
24a 頂端
25 横支柱部
26 背もたれ部
27 連結部材
27a 突片
33 後脚部材
34 短寸縦支柱部
34a 頂端部
35 スリット溝
36 上横桟部
37 下横桟部
38 ガイド溝
42,43 支軸材
M 着座者
B 座骨部位
H 臀部
t 空隙
DESCRIPTION OF SYMBOLS 11 Chair 12 Seating body 13 Supporting arm part 13a Open end part 14 Front row butting pad part 15 Intermediate butting pad part 16 Rear row butting pad part 14a, 15a, 16a Concave curved part 14b, 15b, 16b Curved part 17 Front side bar Part 18 Middle horizontal crosspiece 19 Locking rod 22 Supporting leg body 23 Front leg member 24 Long vertical strut part 24a Top end 25 Horizontal strut part 26 Backrest part 27 Connecting member 27a Projection piece 33 Rear leg member 34 Short vertical strut part 34a Top end part 35 Slit groove 36 Upper horizontal beam portion 37 Lower horizontal beam portion 38 Guide groove 42, 43 Support shaft material M Seated person B Sciatic bone portion H Hip portion t Gap

Claims (4)

  1. 着座者が臀部側を載せて座る着座体と、該着座体に前記着座者が座った際にその背面側を支持すべく固定配置されている背もたれ部とを少なくとも備えてなる椅子において、
    前記着座体は、左右一対の支腕部と、これらの支腕部相互間に平行に架け渡して配列される桟幅がいずれも4cmである前列尻当て桟部と中間尻当て桟部と後列尻当て桟部とを備え、
    前記前列尻当て桟部と前記中間尻当て桟部とは、比較的大柄な体格の前記着座者が前記背面側を前記背もたれ部に支持させて座った際に正しい着座姿勢を維持させるべく、該着座者の左右一対の座骨部位の位置と対応させてその姿勢保持が自在な2.5cm幅の空隙を、前記中間尻当て桟部と前記後列尻当て桟部とは、比較的小柄な体格の前記着座者が前記背面側を前記背もたれ部に支持させて座った際に正しい着座姿勢を維持させるべく、該着座者の左右一対の座骨部位の位置と対応させてその姿勢保持が自在な2.5cm幅の空隙をそれぞれ介在させて、一対の前記支腕部に各別に固着配置したことを特徴とする椅子。
    In a chair comprising at least a seating body on which a seated person sits on the buttocks side, and a backrest part fixedly arranged to support the back side when the seated person sits on the seating body,
    The seating body includes a pair of left and right support arms, and a front-row buttocks and intermediate buttocks and a rear row each having a cross-bar width of 4 cm arranged between the support arms in parallel. With a buttocks
    In order to maintain a correct sitting posture when the seated occupant having a relatively large physique sits with the back side supported by the backrest, the front row buttocks and the intermediate buttocks A space of 2.5 cm width that can freely maintain its posture in correspondence with the position of the pair of left and right seat bones of the seated person, and the intermediate buttocks and the rear row buttocks have a relatively small physique. 1. When the seated person sits with the back side supported by the backrest portion, the posture can be freely maintained in correspondence with the position of the pair of left and right sciatic bone parts of the seated person so as to maintain the correct sitting posture . A chair characterized in that it is fixedly disposed on each of the pair of support arms with a 5 cm wide gap interposed therebetween.
  2. 各尻当て桟部には、前記着座者の臀部形状に沿わせるべくその長さ方向に沿わせて形成された凹曲部と、着座時に前記座骨部位側を円滑に保持させるべくその上角部に形成された曲面部とを具備させた請求項1に記載の椅子。   Each buttocks resting portion has a concavely curved portion formed along the length direction so as to follow the shape of the buttocks of the seated person, and an upper corner portion so as to smoothly hold the sciaticus side when seated. The chair according to claim 1, further comprising a curved surface portion formed on the surface.
  3. 前記着座体は、着座者による腰掛けを自在とすべく支脚体を介して支持させた請求項1または2に記載の椅子。   The chair according to claim 1 or 2, wherein the seating body is supported via a support leg so that a seated person can freely sit down.
  4. 前記支脚体は、折り畳み自在に形成した請求項3に記載の椅子。   The chair according to claim 3, wherein the support leg is formed to be foldable.
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