JP4491318B2 - Chair backrest device - Google Patents
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- JP4491318B2 JP4491318B2 JP2004299345A JP2004299345A JP4491318B2 JP 4491318 B2 JP4491318 B2 JP 4491318B2 JP 2004299345 A JP2004299345 A JP 2004299345A JP 2004299345 A JP2004299345 A JP 2004299345A JP 4491318 B2 JP4491318 B2 JP 4491318B2
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Description
本発明は、ランバーサポートを取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
しかし、上記特許文献１および２に記載されている従来のランバーサポートは、ランバーサポート支持部を背枠に固定する手段として、複数のねじを使用しているため、背枠へのランバーサポート支持部の取付け構造が複雑で、取付けに時間がかかるという問題があった。
However, since the conventional lumbar support described in
本発明は、上記問題点に鑑みてなされたものであり、ランバーサポートを、ねじ等を用いることなく、短時間で簡単に背枠に取付けることができる、組立性に優れた椅子の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, and the chair backrest device with excellent assemblability, which can easily attach the lumbar support to the back frame in a short time without using screws or the like. The purpose is to provide.
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、背枠における左右のフレームの前面に、前方に開口する上下方向の係合溝を形成し、ランバーサポートの取付部材の左右両端に設けた係合部を、前記係合溝に係合させるとともに、端部が前記左右のフレームの外側端面に取付けられた前記表皮材を、前記係合部に前側から当接ないし近接させて、背枠の前面側に張設する。
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, a vertical engagement groove that opens forward is formed on the front surface of the left and right frames of the back frame to attach a lumbar support. Engagement portions provided at both left and right ends of the member are engaged with the engagement grooves, and the skin material attached to the outer end surfaces of the left and right frames is brought into contact with the engagement portion from the front side. Or make it close and put it on the front side of the back frame.
(２) 上記(１)項において、ランバーサポートにおける取付部材の係合部の後面に、後方に開口する係合溝を設け、この係合溝における左右方向の外側の外壁を、背枠における左右のフレームの係合溝内に係合させるとともに、前記左右のフレームの係合溝における左右方向の内側の内壁を、前記取付部材における係合部の係合溝内に係合させる。 (2) In the above item (1), an engagement groove that opens to the rear is provided on the rear surface of the engagement portion of the mounting member in the lumbar support, and the outer wall on the outer side in the left-right direction is connected to the left and right sides of the back frame. The inner walls in the left-right direction of the engagement grooves of the left and right frames are engaged with the engagement grooves of the engagement portions of the mounting member.
(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の係合部の前面が、背枠における左右のフレームの前面とほぼ同一面、またはフレームの前面より若干後方になるようにする。 (3) In the above item (2), the front surface of the engaging portion of the mounting member in the lumbar support is made substantially the same as the front surfaces of the left and right frames in the back frame, or slightly behind the front surface of the frame.
(４) 上記(１)〜(３)項のいずれかにおいて、背枠の左右１対のフレームを、相互に平行をなす部分と、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とにより形成し、ランバーサポートの取付部材における係合部を、左右それぞれ上下に少なくとも２箇所設け、これら係合部の一部を、フレームの前記平行をなす部分に、同じく残部の係合部を、内向きに傾斜をなす部分にそれぞれ係合させる。 (4) In any one of the above items (1) to (3), the pair of left and right frames of the back frame are inclined inward in the left and right direction continuous downward from the lower end portion and a portion parallel to each other. And at least two engaging portions on the left and right sides of the mounting member of the lumbar support, and a part of these engaging portions is also connected to the parallel portion of the frame. The joint portions are respectively engaged with the inwardly inclined portions.
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、ランバーサポートを、その取付部材における左右端の係合部を、背枠における左右のフレームの係合溝に係合させるだけで、ランバーサポートを、極めて簡単に短時間で背枠に取付けることができるとともに、背枠の前面側に張設された表皮材を、前記係合部に前側から当接ないし近接させてあるため、ランバーサポートが、背枠から脱落することもない。
According to the present invention, the following effects can be obtained.
According to the first aspect of the present invention, the lumbar support can be very easily obtained by merely engaging the engaging portions of the left and right ends of the mounting member with the engaging grooves of the left and right frames of the back frame. The lumber support can be attached to the back frame in a short time, and the lumbar support is removed from the back frame because the skin material stretched on the front side of the back frame is in contact with or close to the engaging portion from the front side. There is no need to do.
請求項２記載の発明によれば、ランバーサポートにおける取付部の係合部と、背枠における左右のフレームの係合溝との係合が強固になされるため、ランバーサポートの背枠への取付強度が向上する。 According to the second aspect of the present invention, the engagement between the engagement portion of the attachment portion of the lumbar support and the engagement grooves of the left and right frames of the back frame is made strong, so the attachment of the lumbar support to the back frame Strength is improved.
請求項３記載の発明によれば、表皮材が係合部で前方に押し出されて突出し、背中に当たったり、美観を損なうことを防止することができる。 According to the third aspect of the present invention, it is possible to prevent the skin material from being pushed forward by the engaging portion and projecting, hitting the back or impairing the beauty.
請求項４記載の発明によれば、ランバーサポートにおける取付部材の上下方向の動きが阻止され、ランバーサポートを背枠に安定して取付けることができる。 According to the fourth aspect of the invention, the vertical movement of the attachment member in the lumbar support is prevented, and the lumbar support can be stably attached to the back frame.
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 radial rods (2) each having a caster (1) at the tip, and a gas spring (not shown) is provided at the center of the leg (3). A telescopic pedestal (4) provided with a zipper) is erected, and the rear part of the support base (5) is fixed to the upper end of the pedestal (4). On both side surfaces of the front portion of the support base (5), left and right arm portions (5a) 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(８)(８)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(８)(８)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。 The pivot (6) consisting of a hexagonal shaft facing in the left-right direction passes through the center of the support (5) in the front-rear direction, and the left and right supporting the backrest (7) are supported at both ends of the pivot (6). In the pair of backrest support rods (8) and (8), the cylindrical portions (8a) and (8a) facing the left and right formed on the front end portion of the lower portion facing forward are fixedly fitted, and the pivot (6) and the backrest support are supported. The heels (8), (8) and the backrest (7) can rotate with respect to the support base (5) integrally with each other around the pivot (6).
左右の背凭れ支持杆(８)(８)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 slightly from the pivot (6) of the left and right back support rods (8) and (8), and each standing arm (8b ) (8b) has a pair of seat receiving frames (10) and (10) facing the front and rear supporting both sides of the seat (9) at the upper end of the shaft (11). , Respectively. 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 of the back frame (12), inside the skin material (13). A lumbar support (R), which will be described later, is provided. 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。
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).
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 surface of the left and right frames (12A) (12A) in the back frame (12), vertical engaging grooves (18) (18) opening 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 left and right sides of the engaging groove (21a) of the engaging portion (15a) The inner wall (19) of the frame (12A) is engaged.
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(12A)(12A)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 (12A) (12A), the engaging portion (15a) can be easily engaged by curving a little in a rearward convex shape in plan view, but the left and right frames (12A) and (12A) are rearward on the inner edge from the outer edge in the left and right direction. If it forms so that it may incline, the said engagement will become still 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 (15b) of the engaging portion (15a) in the lumbar support (R) is substantially the same surface as the front surface (12a) of the left and right frames (12A) in the back frame (12), or slightly It has a configuration located rearward. 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) of 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 in front of the left and right frames (12A) in the back frame (12), This prevents the lumbar support (R) from falling off the back frame (12).
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(23)(23)が、ねじ(24)(24)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 engagement member having a shallow uneven portion (22 a) formed continuously in the height direction at the center in the left-right direction on the front surface of the mounting member (15). Stop members (22) are provided, and rail members (23) and (23) facing left and right outwards extending in the height direction are attached to the left and right sides thereof by screws (24) and (24).
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(30)(30)が設けられている。なお、リブ(28)を設けることにより、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) guided by a rail member (23) is formed on the rear surface of the support rod (16), and an elastic locking member (27) having a wide U-shape in front view in a plan view is formed in the center. Is provided. At the center of the rear surface of the elastic locking member (27), a locking convex portion (27a) that elastically locks to the concavo-convex portion (22a) is formed. A large number of ribs (28) protrude from the front surface of the left and right ridges (29) provided on the front surface of the support rod (16), and handles ( 30) (30) is provided. By providing the rib (28), the cushioning action is exhibited and the material is saved. 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)の後方に設けられている。 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). This cover member (17) is soft and is provided slightly behind the front surface of the rib (29) and behind the skin material (13) so as to cover the front and top and bottom of the support rod (16). It has been.
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 attached to the back frame (12) as follows. A skin material (13) is stretched in advance on the back frame (12). Position the engagement part (15a) of the mounting member (15) to which the support rod (16) and the cover member (17) are assembled in front of the back frame (12) while pushing the rear surface of the skin material (13). Then, the engaging portion (15a) of the lumbar support (R) is engaged with the engaging grooves (18) of the left and right frames (12A) of the back frame (12). 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). The
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(12B)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。 Also, 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 the left and right direction that continues downward from the lower end. The inwardly inclined portion (12A2) and (12A2) are formed, and the engaging portion (15a) is engaged at two portions of the parallel portion (12A1) and the inclined portion (12A2). Therefore, the vertical movement of the mounting member (15) is prevented by the engagement of the inclined portion (12B). Therefore, the attachment member (15) is securely fixed to the back frame (12) without using fixing means such as screws.
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) is moved to the uppermost position, and FIG. 8 (b) shows the support rod (16). Each of the states is moved to the bottom. The solid line (32) represents the back of the person seated on the seat (9). When moving the support rod (16), hold the handle (30) and move it up and down so that the guide portion (26) of the support rod (16) slides along the rail member (23) and is elastic. The locking projection (27a) of the locking member (27) slides in a state of being in contact with the unevenness (22a) of the locking member (22), and is locked at an arbitrary position of the locking member (22). Held. Thereby, the support rod (16) can be held at a position most suitable for the person who is seated.
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) is provided on the support rod (16) and the guide portion (26) is provided on the mounting member (15), or the locking member (22) is elastically locked on the support rod (16). The member (27) may be provided on the attachment member (15).
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), It is possible to easily attach the mounting member (15) to the back frame (12) in a short time without using any fixed parts such as, and with the skin material (13) stretched on the back frame (12). it can.
(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) Casters
(2) Legs
(3) Leg
(4) pedestal
(5) Support base
(5a) Arm
(6) Axis
(7) Backrest
(8) Support rod
(8a) Tube part
(8b) Standing arm
(9) Seat
(10) Seat support frame
(11) axis
(12) Back frame
(12a) Front
(12b) Slit
(12A) Left and right frames
(12A1) Parallel part
(12A2) Inclined part
(13) Skin material
(14) Armrest
(15) Mounting member
(15a) Engagement part
(15b) Front
(16) Support 杆
(17) Cover member
(18) Engagement groove
(19a) Inner wall
(19b) Front edge
(19c) Exterior wall
(20) Exterior wall
(21) Engaging groove
(22) Locking member
(22a) Concavity and convexity
(23) Rail member
(24) Screw
(26) Guide section
(27) Elastic locking member
(27a) Elastic locking member
(28) Rib
(29) Projections
(30) Handle
(31) Mounting part
(32) Solid line
(R) Lumbar support
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004299345A JP4491318B2 (en) | 2004-10-13 | 2004-10-13 | Chair backrest device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004299345A JP4491318B2 (en) | 2004-10-13 | 2004-10-13 | Chair backrest device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2006110014A JP2006110014A (en) | 2006-04-27 |
| JP4491318B2 true JP4491318B2 (en) | 2010-06-30 |
Family
ID=36379020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004299345A Active JP4491318B2 (en) | 2004-10-13 | 2004-10-13 | Chair backrest device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4491318B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11109683B2 (en) | 2019-02-21 | 2021-09-07 | Steelcase Inc. | Body support assembly and method for the use and assembly thereof |
| US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5105504B2 (en) * | 2006-11-15 | 2012-12-26 | コクヨ株式会社 | Chair |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10211049A (en) * | 1997-01-30 | 1998-08-11 | Okamura Corp | Backrest of chair |
| JP2002191462A (en) * | 2000-12-27 | 2002-07-09 | Okamura Corp | Lumber support device for chair |
| JP2004049656A (en) * | 2002-07-22 | 2004-02-19 | Okamura Corp | Backrest device of chair |
| JP2004113503A (en) * | 2002-09-26 | 2004-04-15 | Okamura Corp | Structure and method for stretching net member |
-
2004
- 2004-10-13 JP JP2004299345A patent/JP4491318B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10211049A (en) * | 1997-01-30 | 1998-08-11 | Okamura Corp | Backrest of chair |
| JP2002191462A (en) * | 2000-12-27 | 2002-07-09 | Okamura Corp | Lumber support device for chair |
| JP2004049656A (en) * | 2002-07-22 | 2004-02-19 | Okamura Corp | Backrest device of chair |
| JP2004113503A (en) * | 2002-09-26 | 2004-04-15 | Okamura Corp | Structure and method for stretching net member |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11109683B2 (en) | 2019-02-21 | 2021-09-07 | Steelcase Inc. | Body support assembly and method for the use and assembly thereof |
| US11602223B2 (en) | 2019-02-21 | 2023-03-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
| US11910934B2 (en) | 2019-02-21 | 2024-02-27 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
| US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
| US11786039B2 (en) | 2019-12-13 | 2023-10-17 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
| US11805913B2 (en) | 2019-12-13 | 2023-11-07 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006110014A (en) | 2006-04-27 |
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