JP3120097U

JP3120097U - Chair back

Info

Publication number: JP3120097U
Application number: JP2005011078U
Authority: JP
Inventors: 隆広冨田
Original assignee: メーコー工業株式会社
Priority date: 2005-12-28
Filing date: 2005-12-28
Publication date: 2006-03-23
Anticipated expiration: 2015-12-28

Abstract

【課題】熱可塑性樹脂を用いて略全面に***を設けたクッション性の良好な背もたれにおいて、長時間に亘り背もたれに背中をあずけても、従来の背もたれのように凸出した背骨に高い面圧がかかることのない背もたれを提供すること。
【解決手段】背もたれフレーム１に熱可塑性樹脂により形成した背もたれ面部材２を取付けた椅子の背もたれにおいて、前記背もたれ面部材２の略中心に、縦方向にに延びて当該背もたれ面部材２の前面が凹陥した溝部を背骨受け部として形成したこと。
【選択図】図４
PROBLEM TO BE SOLVED: To provide a high surface pressure on a spine that protrudes like a conventional backrest even when the backrest is placed on the backrest for a long time in a backrest having a good cushioning property with a small hole provided on a substantially entire surface using a thermoplastic resin. Providing a backrest that does not cost.
In a backrest of a chair in which a backrest surface member 2 formed of thermoplastic resin is attached to a backrest frame 1, the front surface of the backrest surface member 2 extends in the longitudinal direction substantially at the center of the backrest surface member 2. The recessed groove was formed as a backbone receiving part.
[Selection] Figure 4

Description

本考案は遊技ホール用椅子（パーラー用椅子ともいう）やオフィス用椅子などの椅子に適用して好適な背もたれに関する。 The present invention relates to a backrest suitable for application to chairs such as a chair for a game hall (also called a parlor chair) and an office chair.

従来より、パーラー用や事務用の回転椅子において、長時間着座していても疲れにくいと称する座面や背もたれを備えた椅子が多数く提案され、また、実用にも供されているものもある。 Conventionally, there have been proposed many chairs with a seating surface and a backrest that are said to be hard to get tired even if sitting for a long time in parlor and office rotating chairs, and there are some that are also in practical use. .

特に、背もたれに関しては特許文献１や２のように、長時間着座しているときに良好なもたれ感を覚えることができるとして提案されている。この背もたれは、背もたれフレームに熱可塑性エラストマー材による背もたれ状をなす板状成形体の全面に穴をあけたもの、或は、背もたれフレームに熱可塑性エラストマー成形体による紐状体をネット状に交叉させ背もたれ面状に成形したものであるが、問題点もある。 In particular, with respect to the backrest, as disclosed in Patent Documents 1 and 2, it is proposed that a good leaning feeling can be learned when sitting for a long time. This backrest is made by punching the entire surface of a plate-shaped molded body made of thermoplastic elastomer material in the backrest frame, or by crossing a string-shaped body made of thermoplastic elastomer molded body into a net-like shape on the backrest frame. Although it is molded into a backrest shape, there are also problems.

即ち、上記文献１，２に開示されている背もたれは、背もたれ面が人の背中に沿った変形を許容する柔軟性を有するものであるが、人の背中が当接する面が、背骨が当る部位として以外の当る部位とが同一面内に形成されているため、背もたれに背中をあずけたとき、凸出した背骨が背もたれに当る当接面圧が、背中の他の部位が当る部分の当接面圧より高くなり、高い面圧を受ける背骨を中心に不快感や痛さがつのり、結局、余り良好な座り心地が得られていないという点である。
特開２００１−３２７３６０号公報特表平８−５０７９３５号公報 That is, the backrests disclosed in the above-mentioned documents 1 and 2 have flexibility that allows the backrest surface to be deformed along the back of the person. Since the contact area other than as is formed in the same plane, when the back is placed against the backrest, the contact surface pressure where the protruding spine hits the backrest is the contact of the part where the other part hits the back Discomfort and pain centered on the spine that is higher than the surface pressure and receives a high surface pressure, resulting in a poor sitting comfort.
JP 2001-327360 A Japanese National Patent Publication No. 8-507935

そこで本考案では、熱可塑性樹脂を用いて略全面に***を設けたクッション性の良好な背もたれにおいて、長時間に亘り背もたれに背中をあずけても、従来の背もたれのように凸出した背骨に高い面圧がかかることのない背もたれを提供することを課題とする。 Therefore, in the present invention, in the back with good cushioning provided with a small hole on almost the whole surface using thermoplastic resin, even if the back is placed on the back for a long time, it is high on the protruding backbone like the conventional back It is an object to provide a backrest that is not subjected to surface pressure.

上記課題を解決することを目的としてなされた本考案背もたれの構成は、背もたれフレームに熱可塑性樹脂により形成した背もたれ面部材を取付けた椅子の背もたれにおいて、前記背もたれ面部材の略中心に、縦方向にに延びて当該背もたれ面部材の前面が凹陥した溝部を背骨受け部として形成したことを特徴とするものである。 The structure of the backrest of the present invention, which has been made for the purpose of solving the above-mentioned problems, is a chair back in which a backrest surface member formed of a thermoplastic resin is attached to a backrest frame, and in the longitudinal direction substantially at the center of the backrest surface member. A groove portion that extends in the shape of the backrest member and is recessed in the front surface of the backrest surface member is formed as a spine receiving portion.

本考案背もたれにおいて、背もたれ面部材の略全面には、適宜パターンで多数の***を通気用穴として設けると、もたれ心地が一層良好になる。 In the present backrest, when a large number of small holes are provided as ventilation holes in an appropriate pattern on the substantially entire surface of the backrest surface member, the leaning comfort is further improved.

また、背もたれ面部材は、熱可塑性エラストマー材乃至同プラストマー材の成形体により形成したものがある。エラストマー材製のものは、柔軟性が良好であり、プラストマー材製のものは、面全体のバネ性（弾力性）が良好である。 In addition, the backrest member is formed of a thermoplastic elastomer material or a molded body of the same plastomer material. Those made of an elastomer material have good flexibility, and those made of a plastomer material have good spring properties (elasticity) of the entire surface.

本考案では、背もたれ面部材の略中心に、縦方向にに延びて当該背もたれ面部材の前面が凹陥した溝部を背骨受け部として形成した背もたれ面部材を背もたれフレームに取付けて椅子の背もたれに構成したから、着座者がその背中を長時間に亘り前記面部材にあずけていても、凸出した背骨が不快になったり、痛くなったりすることがないという固有の効果を奏する。 In the present invention, a backrest surface member is formed on the backrest frame by attaching a backrest surface member that is formed in the center of the backrest surface member as a backbone receiving portion that is formed in a groove extending in the vertical direction and recessed in the front surface of the backrest surface member. Therefore, even if the seated person places his / her back on the face member for a long time, the protruding spine does not become uncomfortable or painful.

次に本考案背もたれの実施の形態例について、添付した図を参照しつつ説明する。添付した図において、図１は本考案背もたれの一例の正面図、図２は図１の背もたれの背面図、図３は図１の背もたれの左側面図、図４は図１の背もたれの正面側からの斜視図、図５は本考案背もたれを回転椅子に適用した例の正面側からの斜視図である。 Next, embodiments of the present invention backrest will be described with reference to the attached drawings. In the attached drawings, FIG. 1 is a front view of an example of the present invention back, FIG. 2 is a rear view of the back of FIG. 1, FIG. 3 is a left side view of the back of FIG. 1, and FIG. 4 is a front side of the back of FIG. FIG. 5 is a perspective view from the front side of an example in which the inventive backrest is applied to a rotating chair.

図２において、１は椅子の背もたれフレームで、図２の例では、縦長略矩形の外形を呈する外枠部1aが下部のフレームベース1bの上に一体形成され、かつ、外枠部1aの内側とベース1bの上部とが、大略Ｙ状をなす中枠部1cにより一体に連結されることによって、外枠部1aの内側が３つの窓部1d，1e，1fに形成された外観（背面）に形成されている。背もたれフレーム１は、図３に示すように、側面から見て外枠部1aが略くの字（又は、その対称形）状に形成されている一方、中枠部1cはほぼ鉛直状に起立している。 In FIG. 2, reference numeral 1 denotes a chair back frame. In the example of FIG. 2, an outer frame portion 1 a having a substantially rectangular outer shape is integrally formed on a lower frame base 1 b and the inner side of the outer frame portion 1 a. And the upper part of the base 1b are integrally connected by a substantially Y-shaped middle frame 1c, so that the inside of the outer frame 1a is formed into three windows 1d, 1e, 1f (rear surface) Is formed. As shown in FIG. 3, the back frame 1 has an outer frame portion 1a formed in a substantially square shape (or a symmetrical shape) as viewed from the side, while the middle frame portion 1c stands up in a substantially vertical shape. is doing.

２は、上記の背もたれフレーム１の前面（正面）に装着した背もたれ面部材で、この例では次の構成を具備したものである。
即ち、この背もたれ面部材２は、そのフレーム１の外枠部1aにおける上部水平辺部と左右の垂直辺部の３辺に取付けて支持される上半部側の３周縁2a，2b，2cを有すると共に、左右の周縁2b，2cの幅をテーパー状に狭めた逆台形状で下端がフレームベース1bの前面に取付けて支持される逆台形状部2dを備えて全体の形状が形成されている。 Reference numeral 2 denotes a backrest surface member mounted on the front surface (front surface) of the backrest frame 1, which has the following configuration in this example.
That is, the backrest surface member 2 has three peripheral edges 2a, 2b, and 2c on the upper half side that are supported by being attached to the three sides of the upper horizontal side and the left and right vertical sides of the outer frame portion 1a of the frame 1. And an inverted trapezoidal portion 2d that is supported by being attached to the front surface of the frame base 1b with an inverted trapezoidal shape in which the widths of the left and right peripheral edges 2b and 2c are tapered. .

そして、この背もたれ面部材２の幅方向の中心部位は、正面から見て縦向きの凹陥した溝部３が、背骨受け部として形成されていると共に、前記溝部３を含む当該面部材２の略全面に亘り、ここでは弧状の長穴が通気穴４として多数穿設されている。
上記構成を具備した背もたれ面部材２は、熱可塑性エラストマー材、例えばポリウレタン等による成形品、或は、熱可塑性プラストマー材、例えば、ポリプロプレン等による成形品として形成する。 The center portion in the width direction of the backrest surface member 2 is formed with a groove portion 3 that is vertically depressed when viewed from the front as a backbone receiving portion, and substantially the entire surface member 2 including the groove portion 3. In this case, a large number of arc-shaped long holes are formed as vent holes 4 here.
The back surface member 2 having the above-described configuration is formed as a molded product made of a thermoplastic elastomer material such as polyurethane, or as a molded product made of a thermoplastic plastomer material such as polypropylene.

上記の構成を備えた背もたれフレーム１と背もたれ面部材２は、当該面部材２を前記フレーム１の前面に配置し、配置した背もたれ面部材２の上半部側の３周縁2a，2b，2cを、背もたれフレーム１における外枠部1aに嵌合，接着，ビス止めなどによる固着手段によって取付けると共に、当該面部材２の逆台形状部2dを前記フレーム１のベース1bに上記固着手段と同じ固着手段により取付ける。 The backrest frame 1 and the backrest surface member 2 having the above-described configuration are arranged such that the surface member 2 is disposed on the front surface of the frame 1 and the three peripheral edges 2a, 2b, 2c on the upper half side of the disposed backrest surface member 2 are arranged. In addition, it is attached to the outer frame portion 1a of the back frame 1 by fixing means such as fitting, bonding, and screwing, and the inverted trapezoidal portion 2d of the surface member 2 is fixed to the base 1b of the frame 1 in the same manner as the above fixing means. Install by.

この取付け態様により、背もたれ面部材２は、その上半部３周縁2a〜2cと逆台形状部2dの下端において、フレーム１に支持され、残りの背もたれ面はフレーム１（中枠部1c）から浮いた状態でそのフレーム１に取付けられて支持される（図３，図４参照）。
この取付けの結果、背もたれ面状部材２は、着座者の腰椎に相当する部位が前方へ膨出した膨出部５を形成し、この膨出部５より上方はならだかに後傾した弯曲面に、また前記膨出部位より下方はベース1dの後端側に後退するように傾斜した弯曲面に形成された態様で背もたれフレーム１に取付けられることになる。これによって本考案背もたれの一態様に形成される。 With this attachment mode, the backrest surface member 2 is supported by the frame 1 at the peripheral edges 2a to 2c of the upper half 3 and the lower end of the inverted trapezoidal portion 2d, and the remaining backrest surface is from the frame 1 (the middle frame portion 1c). It is attached to and supported by the frame 1 in a floating state (see FIGS. 3 and 4).
As a result of this attachment, the backrest surface member 2 forms a bulging portion 5 in which a portion corresponding to the lumbar vertebra of the seated person bulges forward, and the heel curved surface that is gently inclined backward from the bulging portion 5 In addition, the portion below the bulging portion is attached to the backrest frame 1 in such a manner that it is formed in a curved surface that is inclined so as to recede toward the rear end side of the base 1d. Thereby, it forms in one aspect | mode of this invention backrest.

上記のように形成される本考案背もたれは、図５に例示したような態様で回転椅子に適用したとき、着座者が座面Ｓに座ると、その腰椎部分は背もたれ面部材２における膨出部５に好適にフィットし、また、着座者が着座姿勢のままその背中を背もたれ面部材２の側にあずけると、着座者の背骨が背もたれ面部材２の中央に設けた凹溝３による背骨受け部に対面するので、背骨に背もたれによる圧迫感を受けることがない。 When the seat back is seated on the seat surface S when the seat back of the present invention formed as described above is applied to a swivel chair in the manner illustrated in FIG. 5, the lumbar portion of the seat back is the bulging portion of the back surface member 2. 5, and when the seated person places his / her back on the side of the backrest surface member 2 in the sitting posture, the backrest of the seated person by the concave groove 3 provided in the center of the backrest surface member 2 Because they face each other, they do not feel the pressure from the backrest on the spine.

また、上記の背もたれフレーム１並びに面部材２は、いずれも合成樹脂の成形品で形成でき、背もたれへの組立ても、両部材１，２を合着一体化する工程によって実現できるので、製造面でも少ない組立工数で背もたれを得ることができる。 Further, the backrest frame 1 and the face member 2 can be formed of a synthetic resin molded product, and can be realized by a process of attaching and integrating the members 1 and 2 even when assembled to the backrest. A backrest can be obtained with a small number of assembly steps.

本考案は以上の通りであって、背もたれ面部材の略中心に、縦方向にに延びて当該背もたれ面部材の前面が凹陥した溝部を背骨受け部として形成した背もたれ面部材を背もたれフレームに取付けて椅子の背もたれに構成したから、着座者がその背中を長時間に亘り前記面部材にあずけていても、凸出した背骨が不快になったり、痛くなったりすることがない。従って、本考案はパーラー用椅子やオフィス用椅子の背もたれとして、きわめて有用である。 The present invention is as described above, and the backrest surface member formed in the center of the backrest surface member in the longitudinal direction and having a groove portion in which the front surface of the backrest surface member is recessed as a backbone receiving portion is attached to the backrest frame. Since the chair is constructed on the back of the chair, the protruding spine does not become uncomfortable or painful even if the seated person places his back on the face member for a long time. Therefore, the present invention is extremely useful as a backrest for a parlor chair or an office chair.

本考案背もたれの一例の正面図。The front view of an example of this invention backrest. 図１の背もたれの背面図。The rear view of the backrest of FIG. 図１の背もたれの左側面図。The left view of the backrest of FIG. 図１の背もたれの正面側からの斜視図。The perspective view from the front side of the backrest of FIG. 本考案背もたれを回転椅子に適用した例の正面側からの斜視図。The perspective view from the front side of the example which applied this invention backrest to the rotation chair.

符号の説明Explanation of symbols

１背もたれフレーム
1a 外枠部
1b ベース
1c 中枠部
1d〜1f 窓部
２背もたれ面部材
2a〜2c ３周縁部
2d 逆台形状部
３凹溝
４通気穴
５膨出部
1 Back frame
1a Outer frame
1b base
1c Middle frame
1d to 1f Window part 2 Backrest surface member
2a ~ 2c 3 peripheral edge
2d inverted trapezoidal shape 3 concave groove 4 vent hole 5 bulge

Claims

背もたれフレームに熱可塑性樹脂により形成した背もたれ面部材を取付けた椅子の背もたれにおいて、前記背もたれ面部材の略中心に、縦方向にに延びて当該背もたれ面部材の前面が凹陥した溝部を背骨受け部として形成したことを特徴とする椅子の背もたれ。 In a backrest of a chair in which a backrest surface member formed of a thermoplastic resin is attached to a backrest frame, a groove portion extending in a vertical direction and recessed in the front surface of the backrest surface member at a substantially center of the backrest surface member is used as a backbone receiving portion. The back of the chair, characterized by forming.

背もたれ面部材の略全面には、適宜パターンで多数の***を通気用穴として設けた請求項１の椅子の背もたれ。 The backrest of the chair according to claim 1, wherein a number of small holes are provided as vent holes in an appropriate pattern on substantially the entire surface of the backrest surface member.

背もたれ面部材は、熱可塑性エラストマー材乃至熱可塑性プラストマー材の成形体により形成した請求項１又は２の椅子の背もたれ。
The backrest of the chair according to claim 1 or 2, wherein the backrest surface member is formed of a molded body of a thermoplastic elastomer material or a thermoplastic plastomer material.