JP5059888B2 - Chair backrest device - Google Patents

Chair backrest device Download PDF

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JP5059888B2
JP5059888B2 JP2010036170A JP2010036170A JP5059888B2 JP 5059888 B2 JP5059888 B2 JP 5059888B2 JP 2010036170 A JP2010036170 A JP 2010036170A JP 2010036170 A JP2010036170 A JP 2010036170A JP 5059888 B2 JP5059888 B2 JP 5059888B2
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support rod
support
vertical direction
mounting member
chair
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JP2010115527A (en
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洋一郎 小田
哲也 成田
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Okamura Corp
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Okamura Corp
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本発明は、ランバーサポートを取り付けた椅子の背凭れ装置に関する。   The present invention relates to a chair backrest device to which a lumbar support is attached.

従来、椅子の背凭れにランバーサポートを取付けたものとしては、たとえば特許文献1のほか、本願出願人に係る特許文献2に記載されたものが公知である。   2. Description of the Related Art Conventionally, as a chair with a lumbar support attached to a backrest of a chair, for example, Patent Document 1 and Patent Document 2 related to the applicant of the present application are known.

特表平8−507935号公報Japanese National Patent Publication No. 8-507935 特開2004−49656号公報JP 2004-49656 A

しかし、前記特許文献1および2に記載の背凭れ装置においては、背凭れの表皮材の後側に、比較的高寸の剛性のあるランバーサポートを配置して、ランバーサポートを、支持部のレールに沿って上下に移動させる構造である。したがって、ランバーサポートの上下の位置により、ランバーサポート支持部を介して背枠にかかる負荷が大きく変動するため、背枠の構造が複雑となり、コスト高になるという問題があった。さらに、剛性の高い比較的大きい寸法のランバーサポートを上下動させる構造であるため、老人や病人に操作が手軽に行い難い場合もあった。   However, in the backrest device described in Patent Documents 1 and 2, a lumbar support having a relatively high rigidity is disposed on the rear side of the skin material of the backrest, and the lumbar support is attached to the rail of the support portion. It is a structure which moves up and down along. Therefore, since the load applied to the back frame via the lumbar support support portion varies greatly depending on the vertical position of the lumbar support, there is a problem that the structure of the back frame becomes complicated and the cost increases. Furthermore, since the structure has a structure in which a lumbar support having a relatively large size and high rigidity is moved up and down, it may be difficult for an elderly person or a sick person to easily perform an operation.

本発明は、上記問題点に鑑みてなされたもので、背枠の構造を簡略化してコスト高になるのを抑制でき、またランバーサポートにおける背支持部の上下方向の位置調節を行っても、背枠等への負荷が実質的に変化することなく、かつ前記背支持部の上下動を小さな力で行うことができ、老人や病人等にも容易に操作することができるようにした、椅子における背凭れ装置を提供することを目的とする。   The present invention has been made in view of the above problems, can simplify the structure of the back frame and suppress the cost, and even if the vertical position adjustment of the back support portion in the lumbar support, A chair in which the load on the back frame or the like is not substantially changed, and the back support part can be moved up and down with a small force and can be easily operated by an elderly person or a sick person. An object of the present invention is to provide a backrest device.

上記課題は、特許請求の範囲における各請求項に示すように、下記の構成を備える発明によって解決される。
(1)背枠の前面側に表皮材を張設した椅子の背凭れ装置において、前記背枠の左右フレームを互いに平行をなす部分と、前記平行をなす部分の下端部から下方に連続する左右方向の内向きに傾斜をなす部分とにより形成し、ランバーサポートを支持する硬質の取付部材を、両側端の上下端部がそれぞれ前記左右フレームの前記平行をなす部分と、前記左右方向の内向きに傾斜をなす部分とに取付ける。
The above-described problems are solved by the invention having the following configuration, as shown in each of the claims.
(1) In a chair backrest device in which a skin material is stretched on the front side of the back frame, the left and right frames of the back frame are parallel to each other, and the left and right continuous from the lower end of the parallel part. A rigid mounting member that supports the lumbar support, and the upper and lower ends of both side ends are parallel to the left and right frames, and the leftward and rightward inward directions. Attach to the inclined part.

(2)上記(1)項において、前記ランバーサポートは、前記取付部材に上下方向に移動可能に取付けたサポート杆と、このサポート杆の前方および上下方向を覆うように、上下端部を前記取付部材に固着した軟質のカバー部材とを有し、かつランバーサポートを前記表皮材の後側に位置するように設けるとともに、ランバーサポートにおける取付部材またはサポート杆のいずれか一方に、上下方向のレールを、同じく他方に、前記レールをガイドするガイド部を設けて、サポート杆を取付部材に対して上下方向に移動可能とし、かつサポート杆を上下方向の複数の位置で固定しうるようにする。   (2) In the above paragraph (1), the lumbar support is mounted on the mounting member so as to be movable in the vertical direction, and the upper and lower ends are mounted on the mounting so as to cover the front and the vertical direction of the support rod. And a soft cover member fixed to the member, and a lumbar support is provided so as to be positioned on the rear side of the skin material, and a rail in the vertical direction is provided on either the mounting member or the support rod of the lumbar support. Similarly, a guide portion for guiding the rail is provided on the other side so that the support rod can be moved in the vertical direction with respect to the mounting member, and the support rod can be fixed at a plurality of positions in the vertical direction.

(3)上記(2)項において、ランバーサポートにおける取付部材またはサポート杆のいずれか一方に、上下に連続する凹凸部を、同じく他方に、この凹凸部に係止する弾性係止片を設け、前記凹凸部と弾性係止片との係止により、サポート杆を上下方向の複数の位置で固定しうるようにする。   (3) In the above item (2), either one of the mounting member or the support rod in the lumbar support is provided with a concavo-convex portion that is continuous in the vertical direction, and an elastic locking piece that is locked to the concavo-convex portion on the other side The support rod can be fixed at a plurality of positions in the vertical direction by the engagement between the uneven portion and the elastic locking piece.

(4)上記(2)または(3)項において、サポート杆を、横長の杆状本体部の前面に、複数のリブを左右方向に列設したものとする。   (4) In the above item (2) or (3), it is assumed that the support rod is provided with a plurality of ribs arranged in the left-right direction on the front surface of the horizontally long bowl-shaped main body.

(5)上記(2)〜(4)項のいずれかにおいて、サポート杆の左右両端に、サポート杆を取付部材に対して上下方向に移動させるための取っ手を設ける。   (5) In any one of the above items (2) to (4), a handle for moving the support rod in the vertical direction with respect to the mounting member is provided on both left and right ends of the support rod.

本発明によると、次のような効果が奏せられる。
請求項1記載の発明によれば、人体の荷重は、カバー部材とサポート杆の両者を介して、それぞれ個別に取付部材に加わり、取付部材に加えられた荷重は、その両側端の上下端部の4カ所から背枠に分散されて加えられる。これによって、背枠の特定部位に部分的に過大な荷重が集中的に作用することを防止できる。したがって、背枠を部分的に強固に製作する必要がないので、背枠の構造を簡略化してコスト高になるのを抑制できる。
According to the present invention, the following effects can be obtained.
According to the first aspect of the present invention, the load on the human body is individually applied to the mounting member via both the cover member and the support rod, and the loads applied to the mounting member are the upper and lower end portions on both side ends. It is distributed and added to the back frame from four places. As a result, it is possible to prevent an excessive load from acting on a specific part of the back frame in a concentrated manner. Therefore, since it is not necessary to manufacture the back frame partly firmly, it is possible to simplify the structure of the back frame and suppress an increase in cost.

請求項2記載の発明によれば、サポート杆を着座者の所望の高さ位置に段階的に保持することができる。
さらに、カバー部材は固定されており、サポート杆を上下動させるだけでよいため、老人や病人であっても、小さい力で容易に操作することができる。
According to the second aspect of the present invention, the support rod can be held stepwise at a desired height position of the seated person.
Furthermore, since the cover member is fixed and it is only necessary to move the support rod up and down, even an elderly person or a sick person can easily operate with a small force.

請求項3記載の発明によれば、上下に連続する凹凸部と、弾性係止片との係止により、サポート杆の高さ位置をほぼ連続的に調整することができる。   According to invention of Claim 3, the height position of a support rod can be adjusted substantially continuously by latching with the uneven | corrugated | grooved part which continues up and down, and an elastic locking piece.

請求項4記載の発明によれば、杆状の本体部の前面に複数のリブを左右方向に列設してサポート杆が構成されているため、リブが撓むことにより、ソフト感のあるサポートが得られるとともに、小型、軽量で低コストのサポート杆とすることができる。   According to the fourth aspect of the present invention, since the support rod is configured by arranging a plurality of ribs on the front surface of the bowl-shaped main body portion in the left-right direction, the support having a soft feeling can be obtained by bending the ribs. As well as a small, lightweight and low-cost support rod.

請求項5記載の発明によれば、背凭れの背後で簡単にサポート杆の高さ調整の操作を行うことができる。   According to the fifth aspect of the present invention, it is possible to easily adjust the height of the support heel behind the backrest.

本発明の背凭れ装置を備えた椅子の正面図である。It is a front view of the chair provided with the backrest apparatus of this invention. 同じく、側面図である。Similarly, it is a side view. 本発明の椅子の背凭れ装置の一実施形態を示す正面図である。It is a front view which shows one Embodiment of the backrest apparatus of the chair of this invention. 同じく、図3のIV-IV線断面端面図である。FIG. 4 is a cross-sectional end view taken along the line IV-IV in FIG. 3. 同じく、背枠と取付部材の分解断面図である。Similarly, it is an exploded sectional view of a back frame and a mounting member. 同じく、図3のVI-VI線断面端面図である。Similarly, it is a VI-VI line sectional end view of Drawing 3. 同じく、図3のVII-VII線断面端面図である。Similarly, it is the VII-VII line sectional end view of Drawing 3. 同じく、(a)はサポート部材の上限位置、(b)は下限位置を、それぞれ示す断面端面図である。Similarly, (a) is a sectional end view showing an upper limit position of the support member and (b) is a lower limit position.

以下、本発明の実施形態を、添付図面を参照して説明する。
図1は、本発明の背凭れ装置を備えた椅子の正面図、図2は、その側面図である。椅子は、先端部にキャスタ1が設けられた放射状をなす5本の脚杆2を有する脚体3を備え、脚体3の中央には、ガススプリング(図示せず)を備える伸縮性の脚柱4が立設されており、脚柱4の上端には、支基5の後部が固着されている。支基5の前部両側面には、左右に延出する腕部5aが一体的に形成されている。
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a front view of a chair provided with the backrest device of the present invention, and FIG. 2 is a side view thereof. The chair includes a leg 3 having five leg rods 2 each having a radial shape with a caster 1 provided at the tip, and a stretchable leg having a gas spring (not shown) in the center of the leg 3. A column 4 is erected, and a rear portion of the support base 5 is fixed to an upper end of the leg column 4. On both side surfaces of the front portion of the support base 5, arm portions 5a extending left and right are integrally formed.

支基5の前後方向のほぼ中央には、左右方向を向く六角軸よりなる枢軸6が貫通しており、枢軸6の両端には、背凭れ7を支持する左右1対の背凭れ支持杆88における前方を向く下部の前端部に形成された左右方向を向く筒部8a、8aが固嵌され、枢軸6と背凭れ支持杆88と背凭れ7とは、枢軸6を中心として、互いに一体となって支基5に対して回動し得るようになっている。   A pivot 6 made of a hexagonal shaft facing in the left-right direction passes through substantially the center in the front-rear direction of the support base 5, and a pair of left and right back support rods 88 that support the backrest 7 at both ends of the pivot 6. The cylindrical portions 8a and 8a facing the left and right formed at the front end portion of the lower portion facing forward are fixedly fitted, and the pivot 6, the backrest support rod 88, and the backrest 7 are integrated with each other around the pivot 6. Thus, it can be rotated with respect to the support base 5.

左右の背凭れ支持杆88における枢軸6より若干後方の部分には、短寸の起立腕8b、8bが上向きに突設されており、各起立腕8b、8bの上端部には、座9の両側を支持する前後方向を向く1対の座受けフレーム10、10の後端部が、左右方向を向く軸11をもって、それぞれ連結されている。背凭れ7は、背枠12と、その表面に張設されたネット部材や多孔性シート部材などからなる表皮材13とを有し、表皮材13の内側には、後述するランバーサポートRが設けられている。各背凭れ支持杆8には、肘掛け14が取付けられている。   Short standing arms 8b and 8b are projected upward at a portion slightly rearward of the pivot 6 in the left and right back support rods 88. At the upper ends of the standing arms 8b and 8b, a seat 9 is provided. The rear ends of a pair of seat receiving frames 10 and 10 that support both sides and that face in the front-rear direction are connected to each other with a shaft 11 that faces in the left-right direction. The backrest 7 has a back frame 12 and a skin material 13 made of a net member or a porous sheet member stretched on the surface thereof, and a lumbar support R described later is provided inside the skin material 13. It has been. An armrest 14 is attached to each back support rod 8.

図3は、表皮材を除いた背凭れの正面図、図4は、図1のIV-IV線断面端面図、図5は、要部の分解断面図である。
図3〜図5に示すように、ランバーサポートRは、硬質の取付部材15と、サポート杆16と、軟質のカバー部材17とよりなっている。
ここで硬質の取付部材15とは、着座者からの荷重に対する耐荷重強度を有するものであればよく、一般的には硬質合成樹脂、あるいは厚手の軟質合成樹脂で成形された取付部材が用いられる。
また、軟質のカバー部材17とは、着座者からの荷重およびサポート杆16の上下動により、変形しうるものであればよく、一般的には軟質合成樹脂板、合成または天然のゴム板などが用いられる。
3 is a front view of the backrest excluding the skin material, FIG. 4 is a sectional end view taken along the line IV-IV of FIG. 1, and FIG. 5 is an exploded sectional view of the main part.
As shown in FIGS. 3 to 5, the lumbar support R includes a hard mounting member 15, a support rod 16, and a soft cover member 17.
Here, the hard mounting member 15 only needs to have a load-bearing strength against a load from a seated person, and generally a mounting member formed of a hard synthetic resin or a thick soft synthetic resin is used. .
The soft cover member 17 may be any material that can be deformed by the load from the seated person and the vertical movement of the support rod 16, and is generally a soft synthetic resin plate, a synthetic or natural rubber plate, or the like. Used.

背枠12における左右のフレーム12A、12Aの前面には、前方に開口する上下方向の係合溝18、18が形成されている。図5に示すように、この係合溝18の内壁19aの前端19bは、外壁19cの前面12aより距離Lだけ後退している。ランバーサポートRにおける取付部材15の両側端の係合部15aの後面には、後方に開口する上下方向の係合溝21が設けられている。左右のフレーム12Aの係合溝18内に係合部15aの外壁20が係合されるとともに、係合部15aの係合溝21内に、左右のフレーム12Aの内壁19が係合されている。   On the front surfaces of the left and right frames 12A, 12A in the back frame 12, vertical engagement grooves 18, 18 that open forward are formed. As shown in FIG. 5, the front end 19b of the inner wall 19a of the engagement groove 18 is retracted by a distance L from the front surface 12a of the outer wall 19c. On the rear surface of the engaging portion 15a at both ends of the mounting member 15 in the lumbar support R, an engaging groove 21 in the vertical direction that opens rearward is provided. The outer wall 20 of the engaging portion 15a is engaged in the engaging groove 18 of the left and right frames 12A, and the inner wall 19 of the left and right frame 12A is engaged in the engaging groove 21 of the engaging portion 15a. .

なお、ランバーサポートRの取付部材15の係合部15aを、左右のフレーム12A12Aの係合溝18に係合させる際には、前記係合部15aを平面視後向き凸状に少しばかり湾曲させることにより、容易に係合させることができるが、左右のフレーム12A、12Aを、左右方向における外側端縁より内側端縁に後傾するように形成しておけば、前記係合は一層容易になる。   When engaging the engaging portion 15a of the mounting member 15 of the lumbar support R with the engaging groove 18 of the left and right frames 12A12A, the engaging portion 15a is slightly curved in a rearward convex shape in plan view. However, if the left and right frames 12A and 12A are formed so as to tilt backward from the outer edge in the left-right direction to the inner edge, the engagement becomes easier. .

図4に示すように、ランバーサポートRにおける係合部15aの前面15bは、背枠12における左右のフレーム12Aの前面12aとほぼ同一面、または若干後方に位置する構成となっている。背枠12における左右のフレーム12Aの左右外側端面に形成されたスリット12bには、背凭れ7の表皮材13の端部が取付けられている。ランバーサポートRにおける取付部材15の係合部15aは、背枠12における左右のフレーム12Aの前側に張設された表皮材13に当接しており、これにより、ランバーサポートRの背枠12からの脱落が防止されている。   As shown in FIG. 4, the front surface 15 b of the engaging portion 15 a in the lumbar support R is configured to be positioned substantially on the same plane as or slightly behind the front surface 12 a of the left and right frames 12 A in the back frame 12. The ends of the skin material 13 of the backrest 7 are attached to the slits 12b formed on the left and right outer end surfaces of the left and right frames 12A in the back frame 12. The engaging portion 15a of the mounting member 15 in the lumbar support R is in contact with the skin material 13 stretched on the front side of the left and right frames 12A in the back frame 12, so that the lumbar support R is separated from the back frame 12. Dropping is prevented.

図6および図7は、それぞれ図1のVI-VI線およびVII-VII線断面端面図である。
図4、図6および図7に示すように、取付部材15の前面における左右方向中央部には、浅い凹凸部22aが高さ方向に連続して形成されている樹脂製の係止部材22が設けられ、かつ、その左右両側には、高さ方向に延びる左右外側向きのレール部材2323が、ねじ2424により取付けられている。
6 and 7 are sectional end views taken along lines VI-VI and VII-VII in FIG. 1, respectively.
As shown in FIGS. 4, 6, and 7, a resin locking member 22 in which a shallow uneven portion 22 a is continuously formed in the height direction at the center portion in the left-right direction on the front surface of the mounting member 15. Rail members 2323 that are provided on the left and right sides and that extend in the height direction are attached to the left and right sides by screws 2424.

サポート杆16の後面には、レール部材23によりガイドされるガイド部26が形成され、かつ、中央には、平面視前向広幅コ字状の弾性係止部材27が設けられている。弾性係止部材27の後面中央部には、前記凹凸部22aに弾性係止する係止凸部27aが形成されている。サポート杆16の前面に設けられた左右方向の凸条29の前面には、多数のリブ28が突設され、かつ、サポート杆16の左右両端には、取っ手3030が設けられている。なお、リブ28が撓むことにより、クッション作用が発揮され、かつ材料が節減されるが、サポート杆16の前面をリブのない弧状の形状としてもよい。   A guide portion 26 that is guided by the rail member 23 is formed on the rear surface of the support rod 16, and an elastic locking member 27 that has a wide U-shape facing forward in plan view is provided in the center. At the center of the rear surface of the elastic locking member 27, a locking convex portion 27a that elastically locks to the concave and convex portion 22a is formed. A large number of ribs 28 project from the front surface of the left and right ridges 29 provided on the front surface of the support rod 16, and handles 3030 are provided at the left and right ends of the support rod 16. The rib 28 is bent to provide a cushioning action and save material. However, the front surface of the support rod 16 may have an arc shape without ribs.

図6および図7に示すように、取付部材15の上下端縁の取付部31には、カバー部材17が取付けられている。このカバー部材17は、軟質のもので、上記リブ29の前面から若干離間して、サポート杆16の前方および上下を覆うように、上記表皮材13の後側に設けられている。   As shown in FIGS. 6 and 7, the cover member 17 is attached to the attachment portions 31 at the upper and lower edges of the attachment member 15. The cover member 17 is soft and is provided on the rear side of the skin material 13 so as to cover the front and upper and lower sides of the support rod 16 at a distance from the front surface of the rib 29.

ランバーサポートRの背枠12への組付けは、次のようにして行う。背枠12には、予め表皮材13が張設されている。サポート杆16およびカバー部材17が組付けられている取付部材15の係合部15aを、表皮材13の後面を押しながら背枠12の前方に位置させ、ランバーサポートRの係合部15aを、背枠12における左右のフレーム12Aの係合溝18に係合させる。これにより、図4に示すように、表皮材13の張力で係合部15aの前面が後方向きに押圧され、ランバーサポートRの背枠12からの脱落が防止される。   The lumbar support R is assembled to the back frame 12 as follows. A skin material 13 is stretched on the back frame 12 in advance. The engaging portion 15a of the mounting member 15 to which the support rod 16 and the cover member 17 are assembled is positioned in front of the back frame 12 while pushing the rear surface of the skin material 13, and the engaging portion 15a of the lumbar support R is The back frame 12 is engaged with the engagement grooves 18 of the left and right frames 12A. As a result, as shown in FIG. 4, the front surface of the engaging portion 15a is pressed backward by the tension of the skin material 13, and the lumbar support R is prevented from falling off the back frame 12.

また、図3に示すように、背枠12の左右のフレーム12A、12Aは、相互に平行をなす部分12A1、12A1と、この下端部から下方に連続する左右方向の内向きに傾斜をなす部分12A2、12A2とにより形成され、この平行をなす部分12A1と、傾斜をなす部分12A2の2箇所(左右両方で4箇所)において係合部15aが係合されているため、この傾斜をなす部分12A2の係合により、取付部材15の上下移動が阻止される。したがって、取付部材15は、ねじ等の固定手段を使用することなく、確実に背枠12に固定される。   Further, as shown in FIG. 3, the left and right frames 12A and 12A of the back frame 12 are parallel to each other 12A1 and 12A1, and a portion that slopes inward in the left-right direction continuously downward from the lower end portion. 12A2 and 12A2 are formed, and since the engaging portion 15a is engaged at two portions (four portions on both the left and right sides) of the parallel portion 12A1 and the inclined portion 12A2, the inclined portion 12A2 Due to the engagement, the mounting member 15 is prevented from moving up and down. Therefore, the attachment member 15 is securely fixed to the back frame 12 without using fixing means such as screws.

人体の荷重は、カバー部材17とサポート杆16の両者を介して、それぞれ個別に取付部材15に加えられる。この荷重は、取付部材15の両側端の上下端部の4カ所から背枠12に分散されて加えられる。これによって、背枠12の特定部位に部分的に過大な荷重が集中的に作用することを防止できる。したがって、背枠12を部分的に強固に製作する必要がないので、コスト高になるのを抑制できる。   The load of the human body is individually applied to the attachment member 15 through both the cover member 17 and the support rod 16. This load is distributed and applied to the back frame 12 from four locations at the upper and lower end portions on both side ends of the mounting member 15. As a result, it is possible to prevent an excessive load from acting on a specific part of the back frame 12 in a concentrated manner. Therefore, since it is not necessary to manufacture the back frame 12 partly firmly, it is possible to suppress an increase in cost.

図8は、サポート杆16の作動状態を示すもので、図8(a)は、サポート杆16を最上部に移動させた状態、図8(b)は、サポート杆16を最下部に移動させた状態をそれぞれ示している。なお、実線32は、座9に着座した人の背中を表している。サポート杆16を移動させるときは、取っ手30を持って上下に移動させることにより、サポート杆16のガイド部26がレール部材23に沿ってスライドするとともに、弾性係止部材27の係止凸部27aが係止部材22の凹凸部22aに当接した状態でスライドし、係止部材22の任意の位置に係止して保持される。これにより、サポート杆16を、着座した人に最も適した位置に保持することができる。   FIG. 8 shows the operating state of the support rod 16, FIG. 8 (a) shows the state where the support rod 16 has been moved to the uppermost position, and FIG. 8 (b) shows that the support rod 16 has been moved to the lowermost position. Each state is shown. The solid line 32 represents the back of a person seated on the seat 9. When the support rod 16 is moved, the guide portion 26 of the support rod 16 slides along the rail member 23 by holding the handle 30 and moves up and down, and the locking projection 27a of the elastic locking member 27 is moved. Slides in a state of being in contact with the concavo-convex portion 22a of the locking member 22, and is locked and held at an arbitrary position of the locking member 22. Thereby, the support rod 16 can be held at a position most suitable for the seated person.

なお、レール部材23をサポート杆16に、ガイド部26を取付部材15に設けた構成、あるいは、係止部材22をサポート杆16に、弾性係止部材27を取付部材15に設けた構成としてもよい。
以上のように、背枠12の左右両側の係合溝18に、ランバーサポートRの取付部材15の両端の係合部15aを係合させることにより、ねじ等の固定部品を使用することなく、かつ、背枠12に表皮材13を張設した状態で、短時間で取付部材15を背枠12に容易に取付けることができる。
The rail member 23 may be provided on the support rod 16 and the guide portion 26 may be provided on the mounting member 15, or the locking member 22 may be provided on the support rod 16 and the elastic locking member 27 may be provided on the mounting member 15. Good.
As described above, by engaging the engaging portions 15a at both ends of the mounting member 15 of the lumbar support R with the engaging grooves 18 on the left and right sides of the back frame 12, without using fixing parts such as screws, In addition, the attachment member 15 can be easily attached to the back frame 12 in a short time with the skin material 13 stretched on the back frame 12.

1キャスタ
2脚杆
3脚体
4脚柱
5支基
5a腕部
6枢軸
7背凭れ
8支持杆
8a筒部
8b起立腕
9座
10座受けフレーム
11軸
12背枠
12a前面
12bスリット
12A左右のフレーム
12A1平行をなす部分
12A2傾斜をなす部分
13表皮材
14肘掛け
15取付部材
15a係合部
15b前面
16サポート杆
17カバー部材
18係合溝
19a内壁
19b前端
19c外壁
20外壁
21係合溝
22係止部材
22a凹凸部
23レール部材
24ねじ
26ガイド部
27弾性係止部材
27a弾性係止部材
28リブ
29凸条
30取っ手
31取付部
32実線
Rランバーサポート
1 caster 2 leg rod 3 leg body 4 pedestal column 5 support base
5a Arm 6 Axis 7 Backrest 8 Support rod
8a tube
8b 9 standing arms
10 seat support frame
11 axes
12 back frame
12a front
12b slit
12A left and right frame
12A1 parallel part
12A2 inclined part
13 skin material
14 armrests
15 Mounting member
15a engagement part
15b front
16 Support 杆
17 Cover member
18 engaging groove
19a inner wall
19b front end
19c outer wall
20 outer wall
21 engaging groove
22 Locking member
22a irregularities
23 rail members
24 screws
26 Guide section
27 Elastic locking member
27a Elastic locking member
28 ribs
29 ridges
30 handles
31 Mounting part
32 solid R lumbar support

Claims (5)

背枠の前面側に表皮材を張設した椅子の背凭れ装置において、前記背枠の左右フレームを互いに平行をなす部分と、前記平行をなす部分の下端部から下方に連続する左右方向の内向きに傾斜をなす部分とにより形成し、ランバーサポートを支持する硬質の取付部材を、両側端の上下端部がそれぞれ前記左右フレームの前記平行をなす部分と、前記左右方向の内向きに傾斜をなす部分とに取付けることを特徴とする椅子の背凭れ装置。   In a chair backrest device in which a skin material is stretched on the front side of the back frame, the left and right frames of the back frame are parallel to each other, and the inner side in the left and right direction continues downward from the lower end of the parallel portion. A rigid mounting member that supports the lumbar support, and the upper and lower ends of both side edges are inclined in parallel to the left and right frames and inward in the left-right direction. A backrest device for a chair, characterized in that it is mounted on a part made of an eggplant. 前記ランバーサポートは、前記取付部材に上下方向に移動可能に取付けたサポート杆と、このサポート杆の前方および上下方向を覆うように、上下端部を前記取付部材に固着した軟質のカバー部材とを有し、かつランバーサポートを前記表皮材の後側に位置するように設けるとともに、ランバーサポートにおける取付部材またはサポート杆のいずれか一方に、上下方向のレールを、同じく他方に、前記レールをガイドするガイド部を設けて、サポート杆を取付部材に対して上下方向に移動可能とし、かつサポート杆を上下方向の複数の位置で固定しうるようにしたことを特徴とする請求項1記載の椅子の背凭れ装置。   The lumbar support includes a support rod attached to the attachment member so as to be movable in the vertical direction, and a soft cover member having upper and lower ends fixed to the attachment member so as to cover the front and the vertical direction of the support rod. And provided with a lumbar support so as to be positioned on the rear side of the skin material, and guides the rail in the vertical direction to either the mounting member or the support rod in the lumbar support and the rail to the other as well. The chair according to claim 1, wherein a guide portion is provided so that the support rod can be moved in the vertical direction with respect to the mounting member, and the support rod can be fixed at a plurality of positions in the vertical direction. Backrest device. ランバーサポートにおける取付部材またはサポート杆のいずれか一方に、上下に連続する凹凸部を、同じく他方に、この凹凸部に係止する弾性係止片を設け、前記凹凸部と弾性係止片との係止により、サポート杆を上下方向の複数の位置で固定しうるようにしたことを特徴とする請求項2記載の椅子の背凭れ装置。   Either one of the mounting member or the support rod in the lumbar support is provided with a concavo-convex portion that is continuous in the vertical direction, and an elastic locking piece that is locked to the concavo-convex portion is provided on the other side. 3. The chair backrest device according to claim 2, wherein the support rod can be fixed at a plurality of positions in the vertical direction by locking. サポート杆を、横長の杆状本体部の前面に、複数のリブを左右方向に列設したものとしたことを特徴とする請求項2または3に記載の椅子の背凭れ装置。   The backrest device for a chair according to claim 2 or 3, characterized in that the support rod is formed by arranging a plurality of ribs in the left-right direction on the front surface of the horizontally long bowl-shaped main body. サポート杆の左右両端に、サポート杆を取付部材に対して上下方向に移動させるための取っ手を設けたことを特徴とする請求項2〜4のいずれかに記載の椅子の背凭れ装置。   The chair backrest device according to any one of claims 2 to 4, wherein a handle for moving the support rod up and down with respect to the mounting member is provided at both left and right ends of the support rod.
JP2010036170A 2010-02-22 2010-02-22 Chair backrest device Expired - Fee Related JP5059888B2 (en)

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