JP2012086071A - Chair - Google Patents

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JP2012086071A
JP2012086071A JP2012023035A JP2012023035A JP2012086071A JP 2012086071 A JP2012086071 A JP 2012086071A JP 2012023035 A JP2012023035 A JP 2012023035A JP 2012023035 A JP2012023035 A JP 2012023035A JP 2012086071 A JP2012086071 A JP 2012086071A
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frame
back plate
portions
engaging
chair
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Hiroshi Masunaga
浩 益永
Yoichiro Oda
洋一郎 小田
Ryo Igarashi
僚 五十嵐
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Okamura Corp
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Okamura Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a chair, obtaining strong supporting force by improving the supporting rigidity of both of a back plate and a backrest frame, and attaining a good sitting comfortableness by effectively resiliently deforming the back plate backward.SOLUTION: A plurality of upper and lower parts of both right and left sides of a frame 4 in the back plate 3 are supported not to move forward and backward by right and left vertical frames in the backrest frame 2.

Description

本発明は、座体の後部から上方に延出した背凭れフレームの前面に、合成樹脂等の硬質弾性体からなる背板を支持してなる椅子に関する。   The present invention relates to a chair in which a back plate made of a hard elastic body such as a synthetic resin is supported on the front surface of a backrest frame extending upward from the rear portion of a seat body.

背凭れフレームの前面に、硬質弾性体からなる背板を取り付けた椅子は、たとえば特許文献1により公知である。   A chair in which a back plate made of a hard elastic body is attached to the front surface of a backrest frame is known from Patent Document 1, for example.

特開2001−128785号公報JP 2001-128785 A

特許文献1に記載される発明においては、背板の上部に上下方向の長孔を穿設し、この長孔と、背凭れフレームの上部に設けた突軸とを係合させて上下方向への移動を可能とするとともに、背凭れフレームの下部に、円弧状で上向きに開口する左右方向の嵌合溝を設けた包持片を前向きに突設し、背板に、前記包持片と対応する位置に、前記嵌合溝に上方より圧嵌される左右方向の膨出部を設けて、背板を背凭れフレームに支持してある。
これにより、背板が後向きに撓曲可能となっている。しかし、この背板においては、着座者を左右側方から包み込むような撓曲は得られない。
また、背板は、全体が硬質弾性材よりなり、その左右両側部を、支持枠の左右の縦杆により支持してあるので、着座者の背中による後向きの荷重によって、背板を後方に効果的に弾性変形させるのが難しい。
In the invention described in Patent Document 1, a long hole in the vertical direction is formed in the upper part of the back plate, and this long hole is engaged with a projecting shaft provided in the upper part of the backrest frame to move in the vertical direction. A holding piece provided with a left and right fitting groove that opens upward in an arc shape at the lower part of the backrest frame, and protrudes forward. In the corresponding position, a left and right bulged portion that is press-fitted into the fitting groove from above is provided, and the back plate is supported by the backrest frame.
As a result, the back plate can be bent backward. However, in this back plate, bending that wraps the seated person from the left and right sides cannot be obtained.
The back plate is entirely made of hard elastic material, and its left and right sides are supported by the left and right vertical rods of the support frame. Is difficult to elastically deform.

本発明は、背板と背凭れフレームの両者の支持剛性を向上させて強固な支持力を得るとともに、着座者の背中による後向きの荷重によって、背板が後方に効果的に弾性変形しうるようにし、快適な座り心地が得られるようにした椅子を提供することを目的とする。   The present invention improves the support rigidity of both the back plate and the backrest frame to obtain a strong support force, and the back plate can be effectively elastically deformed rearward by a backward load by the seated person's back. It is an object of the present invention to provide a chair that can provide a comfortable sitting comfort.

本発明によると、上記課題は、特許請求の範囲における各請求項に記載するように、次のようにして解決される。
(1)座体の後部から上方に延出する背凭れフレームと、この背凭れフレームによって、その前面側に支持された背板とを備える椅子において、前記背板は、左右両側部と上下両端部を高剛性とした枠部と、この枠部により囲まれた内方に形成され、多数の開口を設けることにより、弾性変形可能とした可撓部とを備え、前記背凭れフレームは、前面が前記枠部の左右両側部の後面と対向する左右1対の縦フレームを備え、前記背板における枠部の左右両側部の上下複数箇所を、前記左右の縦フレームにより、前後方向に移動不能に支持する。
According to the present invention, the above-described problem is solved as follows, as described in each of the claims.
(1) In a chair comprising a back frame extending upward from the rear part of the seat body and a back plate supported on the front side by the back frame, the back plate has left and right side portions and upper and lower ends. A frame portion having high rigidity, and a flexible portion that is formed inwardly surrounded by the frame portion and can be elastically deformed by providing a large number of openings. Comprises a pair of left and right vertical frames facing the rear surfaces of the left and right side portions of the frame portion, and the upper and lower portions of the left and right side portions of the frame portion on the back plate cannot be moved in the front-rear direction by the left and right vertical frames. To support.

このような構成とすると、高剛性とした枠部の左右両側部の上下複数箇所を、背凭れフレームにおける左右の縦フレームにより、前後方向に移動不能に支持したことにより、着座者の背中による後向きの荷重によって、背板の可撓部を後方に効果的に弾性変形させることができ、快適な座り心地が得られるとともに、背板の支持剛性も大となる。   With such a configuration, the upper and lower portions of the left and right sides of the highly rigid frame are supported by the left and right vertical frames in the backrest frame so as to be immovable in the front-rear direction. With this load, the flexible portion of the back plate can be effectively elastically deformed rearward, so that a comfortable sitting comfort can be obtained and the support rigidity of the back plate can be increased.

(2)上記(1)項において、左右1対の縦フレームの上部同士を互いに連結する。 (2) In the above item (1), the upper portions of a pair of left and right vertical frames are connected to each other.

このような構成とすると、背凭れフレームの強度が大となるので、背板の可撓部が後方に弾性変形し易くなる。   With such a configuration, the strength of the backrest frame is increased, so that the flexible portion of the back plate is easily elastically deformed rearward.

(3)上記(1)または(2)項において、枠部の左右両側部の後面と、背凭れフレームにおける左右の縦フレームの前面との対向面のいずれか一方に、上下複数の係合部を、かつ他方に、複数の係止部をそれぞれ設け、この係止部を前記係合部に嵌合させることにより、背板を背凭れフレームの前面により前後方向に移動不能に支持する。 (3) In the above item (1) or (2), a plurality of upper and lower engaging portions are provided on any one of the opposing surfaces of the rear surfaces of the left and right side portions of the frame portion and the front surfaces of the left and right vertical frames of the backrest frame. On the other hand, a plurality of locking portions are provided, and the locking portions are fitted to the engaging portions, thereby supporting the back plate so as not to be movable in the front-rear direction by the front surface of the backrest frame.

このような構成とすると、ねじ等を使用することなく、係止部を係合部に嵌合させるだけの簡単な作業で、背板を背凭れフレームの前面により前後方向に移動不能に支持することができる。   With such a configuration, the back plate is supported by the front surface of the backrest frame so as to be immovable in the front-rear direction by a simple operation of simply engaging the engaging portion with the engaging portion without using a screw or the like. be able to.

(4)上記(3)項において、係合部を、上面が閉塞された筒状体とするとともに、係止部を、前記筒状体に下方より嵌合可能な上下方向の軸部とする。 (4) In the above item (3), the engaging portion is a cylindrical body whose upper surface is closed, and the locking portion is a vertical shaft portion that can be fitted to the cylindrical body from below. .

このような構成とすると、筒状体とした係合部に、軸部とした係止部を、下方より簡単に嵌合することができる。   With such a configuration, the engaging portion as the shaft portion can be easily fitted into the engaging portion as the cylindrical body from below.

(5)上記(3)項において、複数の係合部の一部を枠部の左右両側部に設け、この係合部を、縦フレームに設けた係止部としての軸部に上方より嵌合可能な上面が閉塞された筒状体とするとともに、他の係合部を、係止部としての他の軸部との対向面が開口され、この開口を弾性変形により拡開させて前記軸部に嵌合可能な平面視弧状の左右1対の係合片よりなるものとする。 (5) In the above item (3), a part of the plurality of engaging portions is provided on both the left and right side portions of the frame portion, and the engaging portions are fitted from above onto a shaft portion as a locking portion provided in the vertical frame. The upper surface that can be joined is a cylindrical body that is closed, and the other engaging portion is opened on the surface facing the other shaft portion as the locking portion, and the opening is expanded by elastic deformation to It shall consist of a pair of engagement pieces of the left-right arc shape planar view which can be fitted to a shaft part.

このような構成とすると、縦フレームに設けた軸部に、枠部の左右両側部に設けた筒状体を上方より嵌合すると、背凭れフレームに対し、背板が下方に移動するのが防止され、この状態で、平面視弧状の左右1対の係合片よりなる他の係合部に、他の軸部を容易に嵌合しうるので、背凭れフレームの前面に背板を簡単に取付けることができる。   With such a configuration, when the cylindrical body provided on the left and right sides of the frame part is fitted to the shaft part provided on the vertical frame from above, the back plate moves downward relative to the backrest frame. In this state, the other shaft portion can be easily fitted to the other engaging portion made of a pair of left and right engaging pieces in a plan view arc shape, so that the back plate can be easily attached to the front surface of the backrest frame. Can be installed on.

(6)上記(1)〜(5)項のいずれかにおいて、背板の可撓部の左右両側部と、背凭れフレームにおける左右の縦フレームとの対向面に、撓み空間を設ける。 (6) In any one of the above items (1) to (5), a bending space is provided on opposing surfaces of the left and right sides of the flexible portion of the back plate and the left and right vertical frames of the backrest frame.

このような構成とすると、背板の可撓部の両側部が、後方に弾性変形し易くなるので、より快適な座り心地が得られる。   With such a configuration, both side portions of the flexible portion of the back plate are easily elastically deformed backward, so that a more comfortable sitting comfort can be obtained.

本発明によれば、高剛性とした枠部の左右両側部の上下複数箇所を、背凭れフレームにおける左右の縦フレームにより、前後方向に移動不能に支持したことにより、着座者の背中による後向きの荷重によって、背板の可撓部を後方に効果的に弾性変形させることができ、快適な座り心地が得られるとともに、背板の支持剛性も大となる。   According to the present invention, the plurality of upper and lower portions of the left and right side portions of the highly rigid frame portion are supported by the left and right vertical frames in the backrest frame so as to be immovable in the front-rear direction. The flexible portion of the back plate can be effectively elastically deformed backward by the load, so that a comfortable sitting comfort can be obtained and the support rigidity of the back plate is also increased.

本発明を実施した椅子の側面図である。It is a side view of the chair which implemented this invention. 図1におけるII−II線拡大端面図である。FIG. 2 is an enlarged end view taken along line II-II in FIG. 1. 図2におけるIII−III線断面図である。It is the III-III sectional view taken on the line in FIG. 図1におけるIV−IV線拡大端面図である。FIG. 4 is an enlarged end view taken along line IV-IV in FIG. 1. 図4におけるV−V線断面図である。It is the VV sectional view taken on the line in FIG. 図1における破線円VI内の要部拡大分解斜視図である。It is a principal part expansion disassembled perspective view in the broken-line circle VI in FIG. 同じく、図1における破線円VII内の要部拡大分解斜視図である。Similarly, it is a principal part expansion disassembled perspective view in the broken-line circle VII in FIG. 背板の拡大正面図である。It is an enlarged front view of a back board. 背板の拡大背面図である。It is an enlarged rear view of a back board. 背板を背凭れフレームに支持させる手順を示す図である。It is a figure which shows the procedure which makes a back plate support a backrest frame. 図8におけるXI−XI線端面図である。It is the XI-XI line end elevation in FIG. 同じく、図8におけるXII−XII線端面図である。Similarly, it is the XII-XII line | wire end view in FIG. 同じく、図8におけるXIII−XIII線端面図である。Similarly, it is an XIII-XIII line end view in FIG.

以下、本発明の実施形態を、図面を参照して説明する。
図1は、本発明を実施した椅子の側面図、図2は、図1におけるII−II線拡大端面図、図4は、図1におけるIV−IV線拡大端面図、図8は、背板の拡大正面図、図9は、背板の拡大背面図である。
Embodiments of the present invention will be described below with reference to the drawings.
1 is a side view of a chair embodying the present invention, FIG. 2 is an enlarged end view taken along line II-II in FIG. 1, FIG. 4 is an enlarged end view taken along line IV-IV in FIG. 1, and FIG. FIG. 9 is an enlarged rear view of the back plate.

図1に示すように、本発明における椅子は、座体1の後部から上方に延出された背凭れフレーム2の前面に、合成樹脂等の硬質弾性体からなる背板3が支持されている。   As shown in FIG. 1, in the chair according to the present invention, a back plate 3 made of a hard elastic body such as a synthetic resin is supported on the front surface of a backrest frame 2 extending upward from the rear portion of a seat body 1. .

背板3は、図8,図9に示すように、背板3の周縁、すなわち左右側部と上下端部とを高剛性の枠部4とし、このやや縦長のほぼ四角形の枠部4より内方の部位を、着座者の背中による後向きの荷重によって弾性変形する可撓部5としてある。この可撓部5は、前面から後面へ貫通する縦長の開口部6を多数設けることにより弾性変形が容易なように形成されている。   As shown in FIG. 8 and FIG. 9, the back plate 3 has a peripheral portion of the back plate 3, that is, left and right side portions and upper and lower end portions as a highly rigid frame portion 4, which is slightly longer than a substantially rectangular frame portion 4. The inner part is a flexible part 5 that is elastically deformed by a backward load from the back of the seated person. The flexible portion 5 is formed so as to be easily elastically deformed by providing a large number of vertically long openings 6 penetrating from the front surface to the rear surface.

背板3と背凭れフレーム2の両者は、図1に示すように、下端部よりも若干上方の部位が、前方へ突出するように屈曲する側面視ほぼくの字状となっている。   As shown in FIG. 1, the back plate 3 and the backrest frame 2 both have a substantially square shape in side view in which a portion slightly above the lower end is bent so as to protrude forward.

背板3は、枠部4における前記屈曲部7aと上端近傍とのそれぞれの左右側部において、上下方向の軸線まわりに回動可能に背凭れフレーム2に支持されている。   The back plate 3 is supported on the backrest frame 2 so as to be rotatable about an axis in the vertical direction at the left and right side portions of the bent portion 7 a and the vicinity of the upper end of the frame portion 4.

図3は、図2におけるIII−III線断面図、図6は、図1における破線円VI内の要部拡大分解斜視図である。図1〜図3、および図6に示すように、背凭れフレーム2の上端近傍の左右側部に、それぞれ第1係止部8,8が設けられるとともに、背板3の上端近傍の左右側部にそれぞれ第1係合部9,9が設けられ、前記第1係止部8,8を、第1係合部9,9に下方から嵌合させることにより、背板3が背凭れフレーム2に上端部近傍において支持されている。   3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 6 is an enlarged exploded perspective view of a main part in a broken-line circle VI in FIG. As shown in FIGS. 1 to 3 and 6, first locking portions 8 and 8 are provided on the left and right side portions near the upper end of the backrest frame 2, respectively, and the left and right sides near the upper end of the back plate 3. The first engaging portions 9 and 9 are provided in the respective portions, and the first locking portions 8 and 8 are fitted into the first engaging portions 9 and 9 from below so that the back plate 3 is mounted on the back frame. 2 is supported near the upper end.

図6に示すように、第1係止部8は、上下方向の第1軸部10をもって形成され、この第1軸部10の後面に設けられた上下方向の支持体11により、背凭れフレーム2の前面に前向きに突設されている。   As shown in FIG. 6, the first locking portion 8 is formed with a first shaft portion 10 in the vertical direction, and a backrest frame is formed by a vertical support body 11 provided on the rear surface of the first shaft portion 10. The front surface of 2 is projected forward.

第1係合部9は、横断面がほぼC字状の一端がスリット状に開口する上下方向の筒状体12の上面の一部を閉塞することにより形成されている。第1係止部8における第1軸部10を、第1係合部9における筒状体12内に下方から遊嵌状態で嵌合させるとともに、支持体11を筒状体12におけるスリット状開口13内に嵌挿させることにより、第1軸部10が、上下方向の軸線まわりに筒状体12に対して相対的に回動可能に嵌合されている。   The first engagement portion 9 is formed by closing a part of the upper surface of the cylindrical body 12 in the vertical direction whose one end having a substantially C-shaped cross section opens in a slit shape. The first shaft portion 10 in the first locking portion 8 is fitted in the tubular body 12 in the first engaging portion 9 in a loosely fitted state from below, and the support body 11 is slit-shaped in the tubular body 12. The first shaft portion 10 is fitted so as to be rotatable relative to the cylindrical body 12 around the axis in the vertical direction by being fitted into the inner wall 13.

図5は、図4におけるV−V線断面図、図7は、図1における破線円VII内の要部拡大分解斜視図である。   5 is a cross-sectional view taken along line VV in FIG. 4, and FIG. 7 is an enlarged exploded perspective view of a main part in a broken line circle VII in FIG.

図1,図4,図5,図7に示すように、背板3の屈曲部7aにおける左右側部に、それぞれ第2係止部14,14が設けられるとともに、背凭れフレーム2の屈曲部7bにおける左右側部に、それぞれ第2係合部15,15が設けられている。この第2係合部15,15に前記第2係止部14,14を前方から嵌合させることにより、背板3が背凭れフレーム2に屈曲部7a,7bにおいて支持されている。   As shown in FIGS. 1, 4, 5, and 7, second locking portions 14 and 14 are provided on the left and right sides of the bent portion 7 a of the back plate 3, respectively, and the bent portion of the backrest frame 2 is provided. 2nd engaging parts 15 and 15 are provided in the right-and-left side part in 7b, respectively. The back plate 3 is supported by the backrest frame 2 at the bent portions 7a and 7b by fitting the second engaging portions 14 and 14 into the second engaging portions 15 and 15 from the front.

図7に示すように、第2係合部15は、左右1対の係合片16,16を、左右方向に適寸離間して設けられるとともに、両係合片16,16の遊端近傍の対向する内面16a,16aを、平面視弧状となるように凹ませることにより形成されている。   As shown in FIG. 7, the second engagement portion 15 is provided with a pair of left and right engagement pieces 16, 16 that are separated from each other by an appropriate distance in the left-right direction, and in the vicinity of the free ends of both engagement pieces 16, 16. The inner surfaces 16a, 16a that face each other are recessed so as to have an arc shape in a plan view.

第2係止部14としての第2軸部17は、前記係合片16よりもやや長い上下方向の軸体18の上下面に、軸体18の径よりもやや大きい上下板19,19を設けることにより形成されている。   The second shaft portion 17 as the second locking portion 14 has upper and lower plates 19, 19 slightly larger than the diameter of the shaft body 18 on the upper and lower surfaces of the shaft body 18 in the vertical direction slightly longer than the engagement piece 16. It is formed by providing.

第2係止部14における軸体18を、前方から第2係合部15における1対の係合片16,16の遊端間の開口20に押しつけて、前記開口20を弾性変形により拡開させて、平面視弧状に形成された対向内面16a,16a間に嵌合させることにより、第2係止部14における第2軸部17が、上下方向の軸線まわりに相対的に回動可能に第2係合部15に嵌合されている。   The shaft body 18 in the second locking portion 14 is pressed against the opening 20 between the free ends of the pair of engaging pieces 16 and 16 in the second engaging portion 15 from the front, and the opening 20 is expanded by elastic deformation. Thus, the second shaft portion 17 of the second locking portion 14 is relatively rotatable around the vertical axis by being fitted between the opposed inner surfaces 16a, 16a formed in an arc shape in plan view. The second engagement portion 15 is fitted.

図10は、背板3を背凭れフレーム2に支持させる手順を示す図である。   FIG. 10 is a diagram showing a procedure for supporting the back plate 3 on the backrest frame 2.

まず、図10(a)、図6に示すように、背板3を背凭れフレーム2の前方上方に位置させて、下方に移動させ、背凭れフレーム2における左右1対の縦フレームの上端近傍に設けられた第1係止部8の第1軸部10を、背板3の枠部4の左右側部における上端部近傍に設けられた第1係合部9の筒状体12に下方から遊嵌状態で嵌合させるとともに、第1軸部10を背凭れフレーム2に固定している支持体11を筒状体12におけるスリット状開口13内に嵌挿させて、図10(b)に示す状態とする。   First, as shown in FIG. 10A and FIG. 6, the back plate 3 is positioned at the upper front of the backrest frame 2, moved downward, and near the upper end of the pair of left and right vertical frames in the backrest frame 2. The first shaft portion 10 of the first locking portion 8 provided on the lower side of the cylindrical body 12 of the first engaging portion 9 provided in the vicinity of the upper end portion of the left and right side portions of the frame portion 4 of the back plate 3 is lowered. 10 (b), and the support body 11 that fixes the first shaft portion 10 to the backrest frame 2 is inserted into the slit-shaped opening 13 in the cylindrical body 12, The state shown in

次いで、図10(b)、図7に示すように、背板3の枠部4の左右側部における屈曲部7aに設けられている第2係止部14の軸体18を、背凭れフレーム2の左右1対の縦フレームの屈曲部7bに設けられている第2係合部15における1対の係合片16,16の遊端間の開口20に、前方から押しつけて、前記開口20を拡開させて、両係合片16,16間に嵌合させて、図10(c)に示す状態にする。   Next, as shown in FIGS. 10B and 7, the shaft body 18 of the second locking portion 14 provided in the bent portion 7 a on the left and right side portions of the frame portion 4 of the back plate 3 is attached to the backrest frame. The opening 20 is pressed against the opening 20 between the free ends of the pair of engaging pieces 16, 16 in the second engaging portion 15 provided in the bent portion 7 b of the pair of left and right vertical frames. Is expanded and fitted between the engagement pieces 16 and 16 to obtain the state shown in FIG.

これにより、背板3は、背凭れフレーム2に、左右側部における上端部近傍および屈曲部7a,7bの4箇所において、充分な強度をもって取付けられ支持される。   As a result, the back plate 3 is attached to and supported by the backrest frame 2 with sufficient strength in the vicinity of the upper end portion at the left and right side portions and the four bent portions 7a and 7b.

各支持部においては、軸部10,17が上下方向の軸線まわりに回動可能に支持されている。   In each support portion, the shaft portions 10 and 17 are supported so as to be rotatable around the vertical axis.

図11,図12,図13は、それぞれ図8におけるXI-XI線端面図、XII−XII線端面図、XIII−XIII線端面図である。   11, FIG. 12, and FIG. 13 are an end view taken along line XI-XI, an end view taken along line XII-XII, and an end view taken along line XIII-XIII in FIG.

図11に示すように、背板3における枠部4より内方の可撓部5において、屈曲部7aよりも上方の部位における前後方向の肉厚は、左右の枠部4から左右方向の中央へ向かうにしたがって漸次大きくなっている。   As shown in FIG. 11, in the flexible portion 5 inward of the frame portion 4 in the back plate 3, the thickness in the front-rear direction in the portion above the bent portion 7 a is the center in the left-right direction from the left and right frame portions 4 It gradually becomes larger as you go to.

図11と図12を対比することにより理解されるように、背板3の枠部4より内方の可撓部5において、屈曲部7aよりも上方の部位の前後方向の肉厚D1は、前記屈曲部7aにおける肉厚d1よりも大きく形成されている。   As understood by comparing FIG. 11 and FIG. 12, in the flexible portion 5 inward of the frame portion 4 of the back plate 3, the thickness D1 in the front-rear direction of the portion above the bent portion 7a is: It is formed larger than the wall thickness d1 in the bent portion 7a.

さらに、図13に示すように、背板3の前記屈曲部7aよりも上方の可撓部5における上下方向の中央部における前後方向の肉厚D2は、この中央部の上下外方における前後方向の肉厚d2よりも大きく形成されている。   Furthermore, as shown in FIG. 13, the thickness D2 in the front-rear direction at the central portion in the vertical direction of the flexible portion 5 above the bent portion 7a of the back plate 3 is the front-rear direction in the upper and lower outward direction of this central portion. It is formed larger than the wall thickness d2.

このようにすることにより、背板3の屈強部7aより上方の部位における可撓部5の中央部分の過度の撓みが防止され、前記可撓部5における中央部分以外の周辺部分が適度に変位し、図11,図13に破線で示すように、着座者の背を左右上下から包み込むように作用する背板3が得られる。   By doing so, excessive bending of the central portion of the flexible portion 5 in the portion above the bending portion 7a of the back plate 3 is prevented, and peripheral portions other than the central portion of the flexible portion 5 are appropriately displaced. Then, as shown by the broken lines in FIGS. 11 and 13, the back plate 3 is obtained that acts to wrap the back of the seated person from the left, right, top and bottom.

図11,図12に示すように、背板3における枠部4の後面には、上下方向に延びるリブ21a,21bが設けられている。これにより、枠部4の上下方向の曲げ剛性が向上し、好ましい適度の剛性を有する背板3が得られる。   As shown in FIGS. 11 and 12, ribs 21 a and 21 b extending in the vertical direction are provided on the rear surface of the frame portion 4 in the back plate 3. Thereby, the bending rigidity of the up-down direction of the frame part 4 improves, and the back board 3 which has preferable moderate rigidity is obtained.

図2,図4に示すように、背凭れフレーム2における左右1対の縦フレーム2a,2aの屈曲部7bよりも上方における横断面は、後向きに突出するハ字状に形成されており、縦フレーム2aの前面と、背板3の後面との間には、着座者の背中による後向きの荷重により、背板3の前記可撓部5が後方に撓んで湾曲しうるように、撓み空間22が設けられている。   As shown in FIGS. 2 and 4, the cross section above the bent portion 7b of the pair of left and right vertical frames 2a and 2a in the backrest frame 2 is formed in a C-shape projecting rearwardly. Between the front surface of the frame 2a and the rear surface of the back plate 3, a bending space 22 is provided so that the flexible portion 5 of the back plate 3 can bend and bend backward due to a backward load by the back of the seated person. Is provided.

以上、代表的な実施形態を説明したが、たとえば、第1係止部8,第1係合部9と第2係止部14,第2係合部15との両者間で、具体的形態を相互に入れ換えたり、あるいは、背凭れフレーム2と背板3間で、第1係止部8と第1係合部9,または第2係止部14と第2係合部15とを入れ換えたりすることもできる。   As mentioned above, although typical embodiment was described, for example, between the 1st latching | locking part 8 and the 1st engaging part 9, and the 2nd latching | locking part 14 and the 2nd engaging part 15, a specific form is mentioned. Or the first locking part 8 and the first engaging part 9 or the second locking part 14 and the second engaging part 15 between the backrest frame 2 and the back plate 3. You can also.

1 座体
2 背凭れフレーム
2a 縦フレーム
3 背板
4 枠部
5 可撓部
6 開口部
7a,7b 屈曲部
8 第1係止部
9 第1係合部
10 第1軸部
11 支持体
12 筒状体
13 スリット状開口
14 第2係止部
15 第2係合部
16 係合片
16a 対向内面
17 第2軸部
18 軸体
19 上板、下板
20 開口
21a,21b リブ
22 撓み空間
DESCRIPTION OF SYMBOLS 1 Seat body 2 Back frame 2a Vertical frame 3 Back board 4 Frame part 5 Flexible part 6 Opening part 7a, 7b Bending part 8 1st latching part 9 1st engaging part 10 1st axial part 11 Support body 12 Cylinder Shaped body 13 Slit-shaped opening 14 Second locking portion 15 Second engagement portion 16 Engagement piece 16a Opposing inner surface 17 Second shaft portion 18 Shaft body 19 Upper plate, lower plate 20 Opening 21a, 21b Rib 22 Deflection space

Claims (6)

座体の後部から上方に延出する背凭れフレームと、この背凭れフレームによって、その前面側に支持された背板とを備える椅子において、
前記背板は、左右両側部と上下両端部を高剛性とした枠部と、この枠部により囲まれた内方に形成され、多数の開口を設けることにより、弾性変形可能とした可撓部とを備え、
前記背凭れフレームは、前面が前記枠部の左右両側部の後面と対向する左右1対の縦フレームを備え、
前記背板における枠部の左右両側部の上下複数箇所を、前記左右の縦フレームにより、前後方向に移動不能に支持したことを特徴とする椅子。
In a chair provided with a back frame extending upward from the rear part of the seat body and a back plate supported on the front side by the back frame,
The back plate is formed in a frame portion having high rigidity at both the left and right side portions and both upper and lower end portions, and an inward portion surrounded by the frame portion, and a flexible portion that can be elastically deformed by providing a large number of openings. And
The back frame includes a pair of left and right vertical frames whose front faces the rear surfaces of the left and right sides of the frame,
A chair characterized in that a plurality of upper and lower portions on both left and right sides of the frame portion of the back plate are supported by the left and right vertical frames so as to be immovable in the front-rear direction.
左右1対の縦フレームの上部同士を互いに連結したことを特徴とする請求項1記載の椅子。   The chair according to claim 1, wherein upper portions of a pair of left and right vertical frames are connected to each other. 枠部の左右両側部の後面と、背凭れフレームにおける左右の縦フレームの前面との対向面のいずれか一方に、上下複数の係合部を、かつ他方に、複数の係止部をそれぞれ設け、この係止部を前記係合部に嵌合させることにより、背板を背凭れフレームの前面により前後方向に移動不能に支持したことを特徴とする請求項1または2記載の椅子。   A plurality of upper and lower engaging portions are provided on one of the opposing surfaces of the left and right sides of the frame portion and the front surfaces of the left and right vertical frames in the backrest frame, and a plurality of locking portions are provided on the other side. The chair according to claim 1, wherein the back plate is supported by the front surface of the backrest frame so as to be immovable in the front-rear direction by fitting the engaging portion to the engaging portion. 係合部を、上面が閉塞された筒状体とするとともに、係止部を、前記筒状体に下方より嵌合可能な上下方向の軸部としたことを特徴とする請求項3記載の椅子。   The engaging portion is a cylindrical body whose upper surface is closed, and the engaging portion is a vertical shaft portion that can be fitted to the cylindrical body from below. Chair. 複数の係合部の一部を枠部の左右両側部に設け、この係合部を、縦フレームに設けた係止部としての軸部に上方より嵌合可能な上面が閉塞された筒状体とするとともに、他の係合部を、係止部としての他の軸部との対向面が開口され、この開口を弾性変形により拡開させて前記軸部に嵌合可能な平面視弧状の左右1対の係合片よりなるものとしたことを特徴とする請求項3記載の椅子。   A cylindrical shape in which a part of a plurality of engaging portions is provided on both left and right side portions of the frame portion, and the upper surface that can be fitted to the shaft portion as a locking portion provided on the vertical frame from above is closed. The surface of the other engaging portion that faces the other shaft portion as an engaging portion is opened, and the opening is expanded by elastic deformation so that the opening can be fitted to the shaft portion. The chair according to claim 3, comprising a pair of left and right engaging pieces. 背板の可撓部の左右両側部と、背凭れフレームにおける左右の縦フレームとの対向面に、撓み空間を設けたことを特徴とする請求項1〜5のいずれかに記載の椅子。   The chair according to any one of claims 1 to 5, wherein bending spaces are provided on opposing surfaces of the left and right side portions of the flexible portion of the back plate and the left and right vertical frames of the backrest frame.
JP2012023035A 2012-02-06 2012-02-06 Chair Pending JP2012086071A (en)

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JP2006305987A Division JP4948975B2 (en) 2006-11-10 2006-11-10 Chair backrest device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017164115A (en) * 2016-03-15 2017-09-21 及樺實業股▲ふん▼有限公司 Fixing device of chair backrest plate

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Publication number Priority date Publication date Assignee Title
JP2001128785A (en) * 1999-11-08 2001-05-15 Okamura Corp Chair
JP2001275780A (en) * 2000-03-31 2001-10-09 Itoki Crebio Corp Equipment for supporting body such as chair and its manufacturing method
JP2004129966A (en) * 2002-10-11 2004-04-30 Takano Co Ltd Backrest structure of chair
JP2005261569A (en) * 2004-03-17 2005-09-29 Honda Motor Co Ltd Seat for vehicle

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2001128785A (en) * 1999-11-08 2001-05-15 Okamura Corp Chair
JP2001275780A (en) * 2000-03-31 2001-10-09 Itoki Crebio Corp Equipment for supporting body such as chair and its manufacturing method
JP2004129966A (en) * 2002-10-11 2004-04-30 Takano Co Ltd Backrest structure of chair
JP2005261569A (en) * 2004-03-17 2005-09-29 Honda Motor Co Ltd Seat for vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017164115A (en) * 2016-03-15 2017-09-21 及樺實業股▲ふん▼有限公司 Fixing device of chair backrest plate

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