JPH0580346U - Chair - Google Patents
ChairInfo
- Publication number
- JPH0580346U JPH0580346U JP2111892U JP2111892U JPH0580346U JP H0580346 U JPH0580346 U JP H0580346U JP 2111892 U JP2111892 U JP 2111892U JP 2111892 U JP2111892 U JP 2111892U JP H0580346 U JPH0580346 U JP H0580346U
- Authority
- JP
- Japan
- Prior art keywords
- backrest
- support arm
- rubber material
- chair
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/448—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with resilient blocks
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
- Chairs Characterized By Structure (AREA)
Abstract
(57)【要約】
【目的】 直結用のゴム材が老化等によって破断しても
背もたれが脱落しないようにする椅子を提供することに
ある。
【構成】 座部１の後部両側にそれぞれ支持アーム２を
固定し、この両支持アーム２の間にゴム材３を介して背
もたれ４を弾性連結した椅子において、上記支持アーム
２と背もたれ４との間に上記ゴム材３を貫通するように
ロッド５を掛け渡し、このロッド５の一端を上記支持ア
ーム２及び背もたれ４のいずれか一方に固定すると共
に、他端を上記支持アーム２及び背もたれ４の他方に遊
嵌させるようにした椅子。
(57) [Abstract] [Purpose] To provide a chair in which the backrest does not fall off even if the rubber material for direct connection is broken due to aging or the like. [Structure] In a chair in which a support arm 2 is fixed to both sides of a rear portion of a seat 1, and a backrest 4 is elastically connected via a rubber material 3 between the support arms 2, the support arm 2 and the backrest 4 are connected. A rod 5 is laid across the rubber material 3 between them, one end of the rod 5 is fixed to either one of the support arm 2 and the backrest 4, and the other end is fixed to the support arm 2 and the backrest 4. A chair that fits loosely into the other.
Description
【０００１】[0001]
本考案は、椅子に関し、更に詳しくは、背もたれの脱落防止を可能にした椅子 に関する。 The present invention relates to a chair, and more particularly, to a chair capable of preventing the backrest from falling off.
【０００２】[0002]
座部の後部両側に支持アームを立ち上げ、この両支持アームの間に挟むように ゴム材を介して背もたれを弾性的に連結するようにした椅子がある。この椅子は 、上記ゴム材の弾性力を利用して背もたれにかかる体重を弾性的に前後に可動す るように支持するため非常に座り心地を良くするという利点がある。しかし、ゴ ム材は長期間使用される間に、温度や紫外線などの影響によって次第に老化する ため、これが過度に進行した状態のとき、背もたれに体重をかけると、突然破断 して背もたれが脱落するということがあった。 There is a chair in which support arms are set up on both sides of the rear part of the seat, and a backrest is elastically connected via a rubber material so as to be sandwiched between the support arms. This chair has an advantage that it is very comfortable to sit because it supports the weight of the backrest elastically movably back and forth by utilizing the elastic force of the rubber material. However, the rubber material gradually ages due to the influence of temperature and ultraviolet rays during long-term use.When this is excessively advanced, if the backrest is weighted, the rubber will suddenly break and the backrest will fall off. There was that.
【０００３】[0003]
本考案の目的は、直結用のゴム材が老化等によって破断しても背もたれが脱落 しないようにする椅子を提供することにある。 An object of the present invention is to provide a chair in which the backrest does not drop even if the rubber material for direct connection breaks due to aging or the like.
【０００４】[0004]
上記目的を達成する本考案は、座部の後部両側にそれぞれ支持アームを固定し 、この両支持アームの間にゴム材を介して背もたれを弾性連結した椅子において 、上記支持アームと背もたれとの間に上記ゴム材を貫通するようにロッドを掛け 渡し、このロッドの一端を上記支持アーム及び背もたれのいずれか一方に固定す ると共に、他端を上記支持アーム及び背もたれの他方に遊嵌させるようにしたこ とを特徴とする。 The present invention that achieves the above object is a chair in which support arms are fixed to both sides of a rear portion of a seat, and a backrest is elastically connected via a rubber material between the support arms, and between the support arm and the backrest. A rod so that it penetrates through the rubber material, one end of this rod is fixed to one of the support arm and the backrest, and the other end is loosely fitted to the other of the support arm and the backrest. It is characterized by shitako.
【０００５】 このように、支持アームと背もたれとの間にゴム材を貫通するようにロッドを 掛け渡したので、ゴム材が破断してもロッドによって背もたれの脱落を防止する ことができる。また、このロッドは一端を上記支持アーム及び背もたれのいずれ か一方に固定すると共に、他端を上記支持アーム及び背もたれの他方に遊嵌させ るようにしたため、ゴム材による背もたれの弾性支持を可能にし、座り心地を阻 害することはない。In this way, since the rod is laid between the support arm and the backrest so as to penetrate the rubber material, even if the rubber material is broken, the rod can prevent the backrest from falling off. Further, this rod has one end fixed to one of the support arm and the backrest, and the other end loosely fitted to the other of the support arm and the backrest, which enables elastic support of the backrest by the rubber material. , It does not interfere with sitting comfort.
【０００６】[0006]
図１は本考案の一実施例からなる椅子であり、図２はその要部を拡大して示す ものである。 図１において、座部１は底部を支柱１１に回動自在に支持され、さらに支柱１ １は複数のキャスタ１２に床面を移動可能に支持されている。座部１の後部には 左右両側に支持アーム２，２が立ち上がるように固定され、かつこの支持アーム ２，２の間に背もたれ４がその両側にゴム材３，３を介在させて弾性支持されて いる。 FIG. 1 is a chair according to an embodiment of the present invention, and FIG. 2 is an enlarged view of a main part thereof. In FIG. 1, the bottom of the seat 1 is rotatably supported by a pillar 11, and the pillar 11 is movably supported by a plurality of casters 12 on the floor. Support arms 2 and 2 are fixed to the left and right sides of the seat 1 so as to stand upright, and a backrest 4 is elastically supported between the support arms 2 and 2 with rubber members 3 and 3 interposed therebetween. ing.
【０００７】 図２に詳細を示すように、上記ゴム材３は左右両側に固定板６，７を加硫時に 一体に接着させ、その一方の固定板６に上下２本のピン１３を外側に突出するよ うに固定すると共に、他方の固定板７に同様に上下２本のボルト１４を外側に突 出するように固定している。このようにピン１３とボルト１４を固定したゴム材 ３は、固定板６側のピン１３を背もたれ４の側部に設けた挿入孔１３ａに差し込 み、他方の固定板７側のボルト１４を、支持アーム２に貫通するように設けた挿 入孔１４ａに差し込み、その頭部にナット１５が螺合締め付けられることにより 、支持アーム２と背もたれ４との間を連結固定している。As shown in detail in FIG. 2, the rubber material 3 has fixing plates 6 and 7 bonded to both right and left sides integrally during vulcanization, and one fixing plate 6 has two upper and lower pins 13 on the outside. In addition to fixing so as to project, the upper and lower two bolts 14 are similarly fixed to the other fixing plate 7 so as to project outward. In this way, the rubber material 3 in which the pin 13 and the bolt 14 are fixed, the pin 13 on the fixed plate 6 side is inserted into the insertion hole 13a provided on the side portion of the backrest 4, and the bolt 14 on the other fixed plate 7 side is fixed. The support arm 2 and the backrest 4 are connected and fixed by being inserted into an insertion hole 14a provided so as to penetrate the support arm 2, and a nut 15 is screwed and tightened to the head thereof.
【０００８】 さらに、ゴム材３の中央には比較的大きな貫通孔１６が左右に設けられている 。この貫通孔１６の中に長いロッド状のボルト５が挿入され、そのネジ部の先端 を背もたれ４側に螺合させると共に、自由端側の頭部を支持アーム２側に設けた 挿入孔１０に挿入させるようにしている。この挿入孔１０と貫通孔１６とは、そ の内径がボルト５よりも十分に大きくしてあり、ボルト５はこれら挿入孔１０と 貫通孔１６に遊嵌状態になっている。また、貫通孔１６と挿入孔１０の内面には 両者に跨るようにゴム管１７が嵌合され、ボルト５がゴム材３や支持アーム２に 接触して摩擦音を発生しないようにしている。Further, a relatively large through hole 16 is provided on the left and right in the center of the rubber material 3. A long rod-shaped bolt 5 is inserted into the through hole 16, the tip of the threaded portion is screwed onto the backrest 4 side, and the head portion on the free end side is inserted into the insertion hole 10 provided on the support arm 2 side. I'm trying to insert it. The inner diameters of the insertion hole 10 and the through hole 16 are made sufficiently larger than the bolt 5, and the bolt 5 is loosely fitted in the insertion hole 10 and the through hole 16. Further, a rubber tube 17 is fitted on the inner surfaces of the through hole 16 and the insertion hole 10 so as to straddle the both, so that the bolt 5 does not come into contact with the rubber material 3 or the support arm 2 to generate a friction noise.
【０００９】 上記構成において、座部１に座り、背中を背もたれ４にもたせ掛けると、図３ に示すように、背もたれ４は体重によりボルト５周りに回動しつつ支持アーム２ より後方へ移動する。ゴム材３はボルト５周りの捩じりと剪断変形をしながら、 その弾性反力によって背もたれ４を支持するため、心地よい座り心地が得られる のである。当然、このときの背もたれ４の変位は、ボルト５が挿入孔１０の中で 遊嵌しうる範囲内で行われるが、椅子の長期使用によりゴム材３が老化すること によって、背もたれ４に掛けた体重によって破断しても、ボルト５の頭部が支持 アーム２の挿入孔１０に係止されて、背もたれ４が脱落することはない。In the above structure, when the user sits down on the seat portion 1 and leans his back against the backrest 4, the backrest 4 moves rearward from the support arm 2 while rotating around the bolt 5 depending on the weight, as shown in FIG. . Since the rubber material 3 supports the backrest 4 by its elastic reaction force while twisting and shearing around the bolt 5, a comfortable sitting feeling can be obtained. Naturally, the displacement of the backrest 4 at this time is performed within a range in which the bolt 5 can be loosely fitted in the insertion hole 10, but when the rubber material 3 ages due to long-term use of the chair, the backrest 4 is hung on the backrest 4. Even if the headrest of the bolt 5 is broken by the weight, the headrest of the bolt 5 is locked in the insertion hole 10 of the support arm 2 and the backrest 4 does not fall off.
【００１０】 なお、上記実施例では、支持アーム２と背もたれ４の間を掛け渡すロッドとな るボルト５を背もたれ４側に固定し、支持アーム２側の挿入孔１０に遊嵌させる ようにしたが、これを逆の関係にして、支持アーム２側に固定し、背もたれ４側 に遊嵌させるように構成してもよい。In the embodiment described above, the bolt 5 serving as a rod that bridges between the support arm 2 and the backrest 4 is fixed to the backrest 4 side and loosely fitted in the insertion hole 10 on the support arm 2 side. However, this may be reversed and fixed to the support arm 2 side and loosely fitted to the backrest 4 side.
【００１１】[0011]
上述したように本考案によれば、支持アームと背もたれとの間にゴム材を貫通 するようにロッドを掛け渡したので、ゴム材が破断してもロッドによって背もた れの脱落を防止することができる。また、このロッドは一端を上記支持アーム及 び背もたれのいずれか一方に固定すると共に、他端を上記支持アーム及び背もた れの他方に遊嵌させるようにしたため、ゴム材による背もたれの弾性支持を可能 にし、座り心地を阻害することはない。 As described above, according to the present invention, the rod is stretched between the support arm and the backrest so as to penetrate the rubber material, so that even if the rubber material breaks, the rod prevents the backrest from falling off. be able to. Also, this rod has one end fixed to one of the support arm and the backrest and the other end loosely fitted to the other of the support arm and the backrest. It does not interfere with sitting comfort.
【図１】本考案の実施例からなる椅子の斜視図である。FIG. 1 is a perspective view of a chair according to an embodiment of the present invention.
【図２】図１の要部を拡大しその側面方向の断面図であ
る。FIG. 2 is an enlarged cross-sectional view of a main part of FIG. 1 in a lateral direction thereof.
【図３】本考案の要部の側面を示した作用説明図であ
る。FIG. 3 is an operation explanatory view showing a side surface of a main part of the present invention.
１ 座部 ２ 支持アーム ３ ゴム材 ４ 背もたれ ５ ボルト（ロッド） ６，７ 固定板 １３ ピン １３ａ，１４ａ 挿
入孔 １４ ボルト １５ ナット １６ 貫通孔 １７ ゴム管1 Seat Part 2 Support Arm 3 Rubber Material 4 Backrest 5 Bolt (Rod) 6,7 Fixing Plate 13 Pins 13a, 14a Insertion Hole 14 Bolt 15 Nut 16 Through Hole 17 Rubber Tube
Claims (1)
固定し、この両支持アームの間にゴム材を介して背もた
れを弾性連結した椅子において、前記支持アームと背も
たれとの間に前記ゴム材を貫通するようにロッドを掛け
渡し、該ロッドの一端を前記支持アーム及び背もたれの
いずれか一方に固定すると共に、他端を前記支持アーム
及び背もたれの他方に遊嵌させるようにした椅子。1. A chair in which support arms are fixed to both sides of a rear portion of a seat portion, and a backrest is elastically connected to the support arms via rubber materials, the rubber material is provided between the support arms and the backrest. A chair in which a rod is spanned so as to pass through, and one end of the rod is fixed to one of the support arm and the backrest, and the other end is loosely fitted to the other of the support arm and the backrest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2111892U JPH0580346U (en) | 1992-04-07 | 1992-04-07 | Chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2111892U JPH0580346U (en) | 1992-04-07 | 1992-04-07 | Chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0580346U true JPH0580346U (en) | 1993-11-02 |
Family
ID=12045969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2111892U Pending JPH0580346U (en) | 1992-04-07 | 1992-04-07 | Chair |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0580346U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011000451A (en) * | 2010-08-16 | 2011-01-06 | Itoki Corp | Support mechanism for backrest of chair |
| JP4627931B2 (en) * | 2001-07-13 | 2011-02-09 | 株式会社イトーキ | Chair back support mechanism |
| JP2013039434A (en) * | 2012-11-26 | 2013-02-28 | Itoki Corp | Mechanism for supporting backrest of chair |
-
1992
- 1992-04-07 JP JP2111892U patent/JPH0580346U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4627931B2 (en) * | 2001-07-13 | 2011-02-09 | 株式会社イトーキ | Chair back support mechanism |
| JP2011000451A (en) * | 2010-08-16 | 2011-01-06 | Itoki Corp | Support mechanism for backrest of chair |
| JP2013039434A (en) * | 2012-11-26 | 2013-02-28 | Itoki Corp | Mechanism for supporting backrest of chair |
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