JPH0433001Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案は背板を傾動できるようにした椅子に関
する。[Detailed Description of the Invention] The present invention relates to a chair with a tiltable back plate.

背板を傾けることができるようにした種々の椅
子が知られているが、構造が複雑だつたり、程よ
い緩衝作用が得られなかつたり、壊れ易かつたり
するものがあつた。 Various chairs with tiltable backboards are known, but some have complicated structures, do not provide adequate cushioning, or are easily broken.

本考案は、ばね枠体に背板を取付け、該背板を
傾動したとき該ばね枠体の弾性作用で背板が支承
されるようにした椅子に係るものである。 The present invention relates to a chair in which a back plate is attached to a spring frame body so that when the back plate is tilted, the back plate is supported by the elastic action of the spring frame body.

以下実施例と共に説明する。 This will be explained below along with examples.

椅子本体は、折たたみ椅子、座椅子その他種々
の構造に作ることができるが、図に示すもので
は、ステンレスパイプ等のパイプ材を屈曲して座
枠部２、前脚部３、底枠部４及び後脚部５を有す
る脚フレーム１を形成し、両側の脚フレームを適
宜個所に設けた連結杆６で連結し、座７を座枠部
に設けてある。上記座枠部２の後端に形成した立
上部８と後脚部５は溶着等により固着してあり、
後脚部の先端は、適宜キヤツプ９で閉塞してあ
る。 The chair body can be made into a folding chair, a seat chair, and various other structures, but in the case shown in the figure, pipe material such as stainless steel pipe is bent to form the seat frame 2, front legs 3, and bottom frame. 4 and a rear leg portion 5, the leg frames on both sides are connected by connecting rods 6 provided at appropriate locations, and a seat 7 is provided on the seat frame portion. The raised part 8 formed at the rear end of the seat frame part 2 and the rear leg part 5 are fixed by welding or the like.
The tips of the rear legs are appropriately closed with caps 9.

背板１０を支持するばね枠体１１は、図に示す
ものでは、直径約６mm〜８mmの太さのばね線材で
形成してあるが、その他のばね線材、パイプ材料
等の有弾性材料で作ることもできる。該ばね枠体
１１は、背板の背面に沿う形状にわん曲する上方
直線部１２と、該直線部に続く傾斜部１３と、該
傾斜部から横に延びる下方直線部１４と、屈曲部
１５を介し下方へ延びる起立部１６を一連に形成
してあるが、上方直線部で２つに分離したり、上
方直線部と下方直線部の間で適宜屈曲させたり、
上方直線部を曲線部としたり種々の形状に作るこ
とができる。該ばね枠体１１は、ブラケツト１７
を用いて木ねじ１８により背板に取付けている
が、その他適宜の手段で取付けてもよい。上記ば
ね枠体１１の起立部１６の先端にはフランジ１９
を有するブツシユ２０を溶着等により固着してあ
り、該ブツシユ２０を上記脚フレーム１の立上部
８に圧入し、適宜フレームの側壁を凹陥２１させ
て抜け止めしてある。該起立部１６には、適宜の
カバー２２を設けることができる。上記背板の裏
面は、図を省略した覆体で覆う。 The spring frame 11 that supports the back plate 10 is made of spring wire material with a diameter of about 6 mm to 8 mm in the one shown in the figure, but it can also be made of other elastic materials such as spring wire material or pipe material. You can also do that. The spring frame body 11 includes an upper straight part 12 curved to follow the back surface of the back plate, an inclined part 13 following the straight part, a lower straight part 14 extending laterally from the inclined part, and a bent part 15. Although a series of standing parts 16 are formed extending downward through the upper straight part, they can be separated into two parts at the upper straight part or bent as appropriate between the upper straight part and the lower straight part.
The upper straight part can be made into a curved part or can be made into various shapes. The spring frame 11 has a bracket 17
Although it is attached to the back plate using wood screws 18, it may be attached by any other suitable means. A flange 19 is provided at the tip of the upright portion 16 of the spring frame 11.
A bushing 20 having the following properties is fixed by welding or the like, and the bushing 20 is press-fitted into the upright part 8 of the leg frame 1, and the side wall of the frame is appropriately recessed 21 to prevent it from coming off. A suitable cover 22 can be provided on the standing portion 16. The back surface of the back plate is covered with a cover whose illustration is omitted.

而して、着席者が背板に寄り掛かると、該背板
１０は後方に傾き、その際ばね枠体１１はねじら
れ、弾性的に背板を支持する。また、大きな力が
背板に作用すると、ばね枠体の起立部の部分が弾
性的にわん曲して背板を支持する。これらの弾性
作用により背板は坐心地よく傾動する。 Thus, when a seated person leans against the back plate, the back plate 10 tilts rearward, and the spring frame 11 is twisted and elastically supports the back plate. Further, when a large force is applied to the back plate, the upright portion of the spring frame bends elastically to support the back plate. Due to these elastic actions, the back plate tilts to provide a comfortable sitting position.

本考案は上記のように構成され、有弾性材料で
背板の背面上部に沿う上方直線部と該上方直線部
から下方に向かう傾斜部と該傾斜部の下端から横
方向に延びる下方直線部と該下方直線部の他端に
屈曲部を介して連設した起立部を一連に形成した
ばね枠体を設け、該ばね枠体の起立部を脚フレー
ムに固定し、上記上方直線部と下方直線部を背板
の背面に取付けるようにしたので、着席者が軽く
伸びをするようなときは、上記背板は上記下方直
線部を中心として上辺部が後方に押されて傾き、
上記上方直線部と傾斜部を介して上記下方直線部
がトーシヨンばねの効果を奏してねじられ、やわ
らかな緩衝作用が得られる。さらに、上半身を背
板に大きくあずけるように傾けると、上記下方直
線部のトーシヨンばねの効果がますます大きく作
用すると共に上記起立部が弾性的にわん曲して後
方に傾き腰の強い緩衝作用が得られる。また、上
記のように、上記ばね枠体により、１つの部材で
２つの可動部分を構成するようにしているから、
構成が簡素化され、経済的に得ることができ丈夫
で快適な椅子が得られる。 The present invention is constructed as described above, and is made of an elastic material and includes an upper straight part along the upper back surface of the back plate, an inclined part extending downward from the upper straight part, and a lower straight part extending laterally from the lower end of the inclined part. A spring frame is provided at the other end of the lower straight portion and has a series of standing portions connected via bent portions, and the raised portion of the spring frame is fixed to the leg frame, and the upper straight portion and the lower straight portion are connected to each other. Since the part is attached to the back of the backboard, when the seated person stretches out slightly, the backboard's upper side is pushed backwards and tilts around the lower straight part.
The lower straight portion is twisted via the upper straight portion and the inclined portion to provide a soft cushioning effect. Furthermore, when the upper body is tilted so as to rest heavily on the backboard, the effect of the torsion spring in the lower straight section becomes even stronger, and the upright section elastically bends and tilts backwards, creating a strong cushioning effect on the lower back. can get. Furthermore, as mentioned above, since one member constitutes two movable parts by the spring frame,
The structure is simplified, and a durable and comfortable chair that can be obtained economically is obtained.

【図面の簡単な説明】[Brief explanation of drawings]

図面は本考案の実施例を示し、第１図は斜視
図、第２図は背板の背面図、第３図はばね枠体と
脚フレームの接続部の拡大断面図、第４図はばね
枠体の分解斜視図である。 １……脚フレーム、１０……背板、１１……ば
ね枠体。 The drawings show an embodiment of the present invention; Fig. 1 is a perspective view, Fig. 2 is a rear view of the back plate, Fig. 3 is an enlarged sectional view of the connection between the spring frame and the leg frame, and Fig. 4 is a view of the spring. It is an exploded perspective view of a frame. 1... Leg frame, 10... Back plate, 11... Spring frame body.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 有弾性材料で背板の背面に沿つて延びる上方直
線部と該上方直線部から下方に向かう傾斜部と該
傾斜部の下端から横方向に延びる下方直線部と該
下方直線部の他端に設けた屈曲部から下方に延び
る起立部を一連に形成したばね枠体を有し、該ば
ね枠体の起立部を脚フレームに固定し、背板を傾
けた際上記ばね枠体の下方直線部がねじられるよ
う背板の背面に上記ばね枠体の上方直線部と下方
直線部を取付けたことを特徴とする椅子。 An elastic material is provided at an upper straight part extending along the back surface of the back plate, an inclined part extending downward from the upper straight part, a lower straight part extending laterally from the lower end of the inclined part, and the other end of the lower straight part. The spring frame has a spring frame formed with a series of upright parts extending downward from the bent part, and when the upright part of the spring frame is fixed to the leg frame and the back plate is tilted, the lower straight part of the spring frame A chair characterized in that the upper straight part and the lower straight part of the spring frame body are attached to the back of the back plate so as to be twisted.