JP4387784B2

JP4387784B2 - Bearing support structure and reclining chair provided with the same

Info

Publication number: JP4387784B2
Application number: JP2003423563A
Authority: JP
Inventors: 信昭那須; 彰清久
Original assignee: Okamura Corp
Current assignee: Okamura Corp
Priority date: 2003-12-19
Filing date: 2003-12-19
Publication date: 2009-12-24
Anticipated expiration: 2023-12-19
Also published as: JP2005177179A

Description

本発明は、２分割構造の軸受を受け金具で簡単かつ強固に支持しうるようにした軸受の支持構造及びそれを備えるリクライニング椅子に関する。 The present invention relates to a bearing support structure in which a bearing having a two-part structure can be easily and firmly supported by a receiving metal fitting, and a reclining chair including the same.

従来のリクライニング椅子には、脚の上端に設けた支基に、背もたれを支持する背杆の前下端部を左右方向を向く軸をもって枢着し、かつ座を、背もたれの後傾に連動して、後下方に移動しうるようにして支基に装着したものがある(例えば、特許文献1参照)。 In a conventional reclining chair, the front lower end of the backrest that supports the backrest is pivotally attached to the support base provided at the upper end of the leg with an axis that faces in the left-right direction, and the seat is linked to the back tilt of the backrest. Some of them are mounted on a support base so that they can move downward and rearward (see, for example, Patent Document 1).

このものにおいては、支基全体を合成樹脂材料やアルミニウム軽合金等により一体成形し、その上面の前後部に形成した左右方向を向く凹溝に、座の前部を回動可能に支持する左右方向を向く軸、および背杆の前下端部を支基に枢着する左右方向を向く軸、並びにそれらを支持する軸受等を上方より嵌合し、かつそれらの上方から押え金具を押し付けて支基に固定している。
特開２００３−２４５１５４号公報 In this structure, the entire support base is integrally formed of a synthetic resin material, an aluminum light alloy, or the like, and left and right supporting the front portion of the seat rotatably in recesses formed in the front and rear portions of the upper surface. A shaft facing in the direction, a shaft facing in the left-right direction that pivots on the front lower end of the dorsal fin, and a bearing that supports them are fitted from above and supported by pressing the presser foot from above. It is fixed to the base.
JP 2003-245154 A

上述のように、大型の支基を合成樹脂材料等により高精度で成形することは、製造コストが高くつくので、支基を板金のプレス加工により安価に製造することが考えられている。
しかし、支基を板金製とすると、上記のような軸受部分を高精度で仕上げることは難しく、軸受が支基内においてがたついたり、軸と共回りしたりするおそれが生じる。また、加工精度を高めようとすると、かえって高くつく。 As described above, since it is expensive to produce a large support base with high accuracy using a synthetic resin material or the like, it is considered to manufacture the support base at low cost by pressing a sheet metal.
However, if the support base is made of sheet metal, it is difficult to finish the bearing portion as described above with high accuracy, and there is a risk that the bearing will rattle in the support base or rotate together with the shaft. Moreover, it is rather expensive to increase the processing accuracy.

本発明は、従来の技術が有する上記のような問題点に鑑み、製造コストを低減できるとともに、軸受を、がたついたり、軸と共回りしたりすることなく、強固に支持することができるとともに、組み立て分解が容易な軸受の支持構造、及びそれを備えるリクライニング椅子を提供することを目的としている。 In view of the above-described problems of the conventional technology, the present invention can reduce the manufacturing cost, and can firmly support the bearing without rattling or co-rotating with the shaft. Another object of the present invention is to provide a bearing support structure that can be easily assembled and disassembled, and a reclining chair including the same.

本発明によると、上記課題は、次のようにして解決される。
(１)側面視半円弧状の半軸受部の外周面に、前記半軸受部の軸線と直交する方向を向く複数のリブを、前記軸線の方向に適宜の間隔を保って突設することにより、側面視における全体の外形をほぼ長方形とした２個の半軸受部材を互いに向き合わせて重合したものを、上面に凹部を有する受け金具と下面に凹部を有する押え金具とを互いに向き合わせて接合したものの前記両凹部により形成される空所に、前記各リブの外周縁が空所の内面に当接するようにして嵌合し、前記受け金具を固定体に固定し、かつ互いに向き合わされた１対の半軸受部材により形成された軸受孔により、その中に嵌合された軸を回転自在に支持するようにし、さらに、互いに隣接する前記リブの間隔のうち複数のものを、前記固定体における側片の板厚とほぼ等しくし、複数の前記間隔のいずれかに、前記側片に設けたＵ字状の切欠きを選択的に係合させて、半軸受部材を前記固定体に固定することにより、前記半軸受部材における側片からの突出量を段階的に選択できるようにする。 According to the present invention, the above problem is solved as follows.
(1) By projecting a plurality of ribs facing the direction perpendicular to the axis of the semi-bearing portion on the outer circumferential surface of the semi-arc-shaped semi-bearing portion in a side view , with appropriate spacing in the direction of the axis. , Two semi-bearing members having a generally rectangular outer shape when viewed from the side and facing each other and superposed, a receiving metal fitting having a recess on the upper surface and a holding metal fitting having a depression on the lower surface are joined to each other However, the ribs are fitted into the voids formed by the concave portions so that the outer peripheral edges of the ribs are in contact with the inner surfaces of the voids, and the receiving metal fittings are fixed to the fixed body and face each other. A bearing hole formed by a pair of semi-bearing members is rotatably supported by a shaft fitted therein, and more than one of the intervals between the ribs adjacent to each other in the fixed body. It is almost equal to the thickness of the side piece Then, by selectively engaging a U-shaped notch provided in the side piece to any one of the plurality of intervals, and fixing the half bearing member to the fixed body, in the half bearing member The amount of protrusion from the side piece can be selected in stages .

(２) 長円形を長手方向に２分割した形状とした半軸受部の外周面に、前記半軸受部の軸線と直交する方向を向く複数のリブを、前記軸線の方向に適宜の間隔を保って突設することにより、側面視における全体の外形をほぼ長方形とした２個の半軸受部材を互いに向き合わせて重合したものを、上面に凹部を有する受け金具と下面に凹部を有する押え金具とを互いに向き合わせて接合したものの前記両凹部により形成される空所に、前記各リブの外周縁が空所の内面に当接するようにして嵌合し、前記受け金具を固定体に固定し、かつ互いに向き合わされた１対の半軸受部材により形成された長孔状の軸受孔により、その中に嵌合された軸を回転自在および長孔の長手方向に摺動可能に支持するようにし、さらに、互いに隣接する前記リブの間隔のうち複数のものを、前記固定体における側片の板厚とほぼ等しくし、複数の前記間隔のいずれかに、前記側片に設けたＵ字状の切欠きを選択的に係合させて、半軸受部材を前記固定体に固定することにより、前記半軸受部材における側片からの突出量を段階的に選択できるようする。
(2) A plurality of ribs oriented in a direction orthogonal to the axis of the half bearing are provided on the outer peripheral surface of the half bearing having a shape obtained by dividing the oval into two in the longitudinal direction, with appropriate spacing in the direction of the axis. The two half bearing members having a generally rectangular outer shape in a side view are overlapped and superposed to each other to form a receiving metal fitting having a concave portion on the upper surface and a holding metal fitting having a concave portion on the lower surface. Are fitted in such a way that the outer peripheral edge of each rib is in contact with the inner surface of the void, and fixed to the fixed body, And a long hole-like bearing hole formed by a pair of semi-bearing members facing each other so as to support the shaft fitted therein so as to be rotatable and slidable in the longitudinal direction of the long hole , And between the adjacent ribs A plurality of them are made substantially equal to the plate thickness of the side piece in the fixed body, and a U-shaped notch provided in the side piece is selectively engaged with any of the plurality of intervals. By fixing the half bearing member to the fixed body, the amount of protrusion from the side piece of the half bearing member can be selected stepwise.

(３)上記(１)または(２)項において、半軸受部材と、受け金具または押え金具とのいずれか一方に、位置決め突起を設け、かつ他方に、前記位置決め突起が嵌合する位置決め孔を設ける。 (3) In the above item (1) or (2), a positioning protrusion is provided on one of the half bearing member and the receiving metal or the holding metal, and a positioning hole is formed on the other to fit the positioning protrusion. Provide.

(４)上記(１)〜(３)項のいずれかにおいて、受け金具と押え金具とを、金属板の中央部に凹部を折曲形成した互いに同一形状のものとする。 (4) In any one of the above items (1) to (3), the receiving metal fitting and the holding metal fitting are made to have the same shape with a concave portion formed at the center of the metal plate.

(５)上記(１)〜(４)項のいずれかにおいて、受け金具および押え金具の凹部のコーナー部の内面に対向するリブのコーナー部に切り欠きを設ける。 (5) In any one of the above items (1) to (4), a notch is provided in the corner portion of the rib facing the inner surface of the corner portion of the concave portion of the receiving metal fitting and the holding metal fitting.

(６)脚の上端に設けた支基に、背もたれを後傾可能として枢支したリクライニング椅子において、前記支基の後部に、上記(１)項またはそれに従属する(３)〜(５)項のいずれかに記載の軸受の支持構造を、その受け金具を支基と一体的に形成して設け、背もたれを支基に枢支する左右方向を向く軸を、軸受孔に回転自在に嵌合する。 (6) In a reclining chair pivotally supported on a support base provided at the upper end of the leg so that the backrest can be tilted backward, the rear part of the support base is the above item (1) or a subordinate item (3) to (5) The bearing support structure described in any of the above is provided with its support bracket formed integrally with the support base, and a shaft facing in the left-right direction that pivots on the backrest with the support base is rotatably fitted in the bearing hole. To do.

(７)脚の上端に設けた支基に枢支された背もたれの後傾に連動して、座が支基に対して後下方に移動するようにしたリクライニング椅子において、前記支基の前部に、上記(２)項またはそれに従属する(３)〜(５)項のいずれかに記載の軸受の支持構造を、その受け金具が支基に固着されるようにして、かつ軸受孔の長手方向が後下方を向くようにして設け、座の前部を支持する左右方向を向く軸を、回転可能かつ後下方に摺動可能として嵌合する。 (7) In a reclining chair in which the seat moves rearward and downward relative to the support base in conjunction with the backward inclination of the backrest pivotally supported by the support base provided at the upper end of the leg, the front portion of the support base The bearing support structure according to the above item (2) or any one of the items (3) to (5) subordinate to the item (2) is arranged so that the receiving metal fitting is fixed to the support base and the length of the bearing hole is It is provided so that the direction faces rearward and lower, and a shaft facing in the left-right direction that supports the front portion of the seat is fitted so as to be rotatable and slidable rearward and downward.

本発明によると、次のような効果を奏することができる。
(ａ)請求項１記載の発明によると、半軸受部材に設けたリブにより、半軸受部材の剛性が高まるだけでなく、リブの外周縁が受け金具と押え金具との凹部の内面に当接することにより、受け金具や押え金具の精度が多少悪くても、半軸受部材のがたつきや、軸との共回り等を確実に防止することができる。
また、受け金具と押え金具とを、板金により製造できるので、製造コストを低減させることができる。
さらに、押え金具を受け金具から外し、両半軸受部材を互いに分離したり、その逆の要領で組み付けることにより、軸を、軸孔の軸線方向からだけでなく、それと直交する方向からも脱着することができ、利便性を高めることができる。
しかも、材料の異なる部材毎に簡単に分離できるので、廃棄時の分別回収に容易に寄与することができる。
また、半軸受部材における側片からの突出量を段階的に選択することができるとともに、２個のリブの間に、固定体における側片に設けた切り欠きの縁部が係合することにより、側片に対する半軸受部材の軸線方向の移動およびがたつきが阻止される。 According to the present invention, the following effects can be achieved.
(a) According to the first aspect of the invention, the rib provided on the half bearing member not only increases the rigidity of the half bearing member, but also the outer peripheral edge of the rib abuts against the inner surface of the recess between the receiving metal fitting and the holding metal fitting. As a result, even if the accuracy of the receiving metal fitting or the holding metal fitting is somewhat poor, it is possible to reliably prevent the half bearing member from rattling or rotating together with the shaft.
Further, since the receiving metal fitting and the holding metal fitting can be manufactured by sheet metal, the manufacturing cost can be reduced.
Furthermore, the shaft can be detached not only from the axial direction of the shaft hole but also from the direction perpendicular thereto by removing the presser fitting from the receiving bracket and separating the half bearing members from each other or by reversing them. Can improve convenience.
And since it can isolate | separate easily for every member from which a material differs, it can contribute to the separate collection | recovery at the time of disposal easily.
Further, the amount of protrusion from the side piece in the half bearing member can be selected in stages, and the edge of the notch provided in the side piece in the fixed body is engaged between the two ribs. The movement of the semi-bearing member relative to the side piece in the axial direction and rattling are prevented.

(ｂ)請求項２記載の発明によると、２個の半軸受部材により、長孔の軸受孔を形成することができ、それによって、軸を回転自在とするだけでなく、軸受孔の長手方向に摺動しうるように案内することができ、用途をさらに拡大することができる。
しかも、この場合にも、リブによって半軸受部材の剛性を高めることができるとともに、半軸受部材のがたつき等を確実に防止することができる。 (b) According to the invention described in claim 2, a long bearing hole can be formed by the two half bearing members, whereby not only the shaft is rotatable but also the longitudinal direction of the bearing hole. Can be guided so as to be slidable, and the application can be further expanded.
Moreover, in this case as well, the rigidity of the half bearing member can be increased by the ribs, and rattling of the half bearing member can be reliably prevented.

(ｃ)請求項３記載の発明によると、位置決め突起と位置決め孔との係合により、組み付け時における半軸受部材と受け金具または押え金具との位置合わせが容易に行えるようになるとともに、組み付け後には、それらの係合により、相互のがたつき等が防止される。 (c) According to the invention described in claim 3, the engagement between the positioning protrusion and the positioning hole makes it easy to align the half bearing member and the receiving metal fitting or the holding metal fitting at the time of assembling. The rattling of each other is prevented by their engagement.

(ｄ)請求項４記載の発明によると、受け金具と押え金具とを、同一の部材により形成することができ、部材の共有化が図られてコストダウンが可能になる。 (d) According to the invention described in claim 4, the receiving metal fitting and the holding metal fitting can be formed of the same member, and the member can be shared to reduce the cost.

(ｅ)請求項５記載の発明によると、リブのコーナー部に切り欠きを設けたので、そのコーナー部が当接するはずの受け金具および押え金具の凹部のコーナー部の加工精度を高める必要がなくなり、加工が容易になり、製造コストを低減できる。 (e) According to the invention described in claim 5, since the notch is provided in the corner portion of the rib, it is not necessary to increase the processing accuracy of the corner portion of the concave portion of the receiving metal fitting and the holding metal fitting that the corner portion should contact. Processing becomes easy and manufacturing costs can be reduced.

(ｆ)請求項６記載の発明によると、支基を板金により安価に製造でき、しかも背もたれを枢支する軸を、がたつきが生じることなく、強固に安定して確実に支持することができる。
また、その軸を背もたれに組み付けたままの状態で支基に装着したり、支基から離脱したりすることができ、廃棄時の材料毎の分別回収にも寄与することができる。 (f) According to the invention described in claim 6, the support base can be manufactured at low cost by sheet metal, and the shaft for pivotally supporting the backrest can be firmly and stably supported without rattling. it can.
Further, the shaft can be attached to or detached from the support base with the shaft attached to the backrest, which can contribute to the separation and collection of each material at the time of disposal.

(ｇ)請求項７記載の発明によると、座の前部を支持する左右方向を向く軸を、支基の前部に、回転可能かつ後下方に摺動可能として、またがたつきが生じることなく、強固に安定して確実に支持することができる。
その他にも、請求項６記載の発明におけるのと同様の効果を奏することができる。 (g) According to the invention described in claim 7, the shaft that supports the front portion of the seat and that faces in the left-right direction can be rotated on the front portion of the support base and slidable rearwardly. Without any problem, it can be firmly and stably supported.
In addition, the same effect as that of the invention described in claim 6 can be obtained.

以下、本発明の実施形態を、図面に基づいて説明する。
図１は、本発明にかかる軸受の支持構造を適用したリクライニング椅子の側面図、図２は、その要部の分解斜視図である。
このリクライニング椅子は、放射状の５本の脚(１)の中心に立設された脚柱(２)を備え、この脚柱(２)の上端に、前後方向に長い支基(３)が回転自在に取付けられている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of a reclining chair to which a bearing support structure according to the present invention is applied, and FIG. 2 is an exploded perspective view of an essential part thereof.
This reclining chair has a pedestal (2) erected at the center of five radial legs (1), and a long support base (3) in the front-rear direction rotates at the upper end of the pedestal (2). It is installed freely.

支基(３)は、下側の金属製の支基ベース(４)と、この支基ベース(４)の蓋をなす合成樹脂製の支基カバー(５)とを備えている。
図３以下に示すように、支基ベース(４)は、上面が開口する半筺状をなし、その後端上部には、ほぼ水平をなす上面板(６)が、その両側縁を支基ベース(４)における上向きの側片(4a)の内面に溶接することにより固着されている。 The support base (3) includes a lower metal support base (4) and a synthetic resin support base cover (5) that covers the support base (4).
As shown in FIG. 3 and subsequent figures, the support base (4) has a semi-cylindrical shape with an open upper surface, and a substantially horizontal upper surface plate (6) is formed at the upper end of the rear end on both sides of the support base. It is fixed by welding to the inner surface of the upward side piece (4a) in (4).

図７に示すように、上面板(６)の後部中央には嵌合孔(７)が設けられ、この嵌合孔(７)には、上下方向を向く筒体(８)が下方より嵌合され、筒体(８)の下端に設けられた拡径フランジ(8a)が上面板(６)の下面に溶接により固着されている。また、筒体(８)の上部は、上面板(６)の上面に溶接により固着された下端が開口する蓋状の補強材(９)の上壁に穿設された嵌合孔(10)に下方より嵌合され、かつその外周部は、嵌合孔(10)の縁に溶接され、補強されている。
筒体(８)には、脚柱(２)内に設けられた、支基(３)の高さ調節用のガススプリング(11)の上端部が下方より嵌合され、それによって支基(３)は、脚柱(２)、より詳しくはガススプリング(11)により、高さ調節可能として支持されている。 As shown in FIG. 7, a fitting hole (7) is provided at the center of the rear portion of the upper plate (6), and a cylindrical body (8) facing vertically is fitted into the fitting hole (7) from below. The diameter-enlarging flange (8a) provided at the lower end of the cylinder (8) is fixed to the lower surface of the upper plate (6) by welding. The upper portion of the cylindrical body (8) has a fitting hole (10) drilled in the upper wall of a lid-like reinforcing material (9) opened at the lower end fixed to the upper surface of the upper plate (6) by welding. The outer peripheral portion is welded to the edge of the fitting hole (10) and reinforced.
An upper end of a gas spring (11) for adjusting the height of the support base (3) provided in the pedestal (2) is fitted into the cylinder (8) from below, whereby the support base ( 3) is supported by a pedestal (2), more specifically a gas spring (11), so that the height can be adjusted.

上面板(６)の後端には、支基ベース(４)における上向きの後片(4b)の上縁中央に設けられた方形の切り欠き(12)を通って後方に突出する突部(6a)が形成され、この突部(6a)の両側端から支基ベース(４)の後片(4b)の後面に沿って垂下する両側片(6b)(6b)の下端部には、背もたれ(19)の傾動用のガススプリング(62)(図１および図２参照)の前下端部を枢支する軸(62a)を受ける軸受孔(13)が設けられている。ガススプリング(62)の上端は、軸(62b)をもって、背杆(20)の中間部に連結されている。 At the rear end of the upper surface plate (6), there is a protrusion protruding rearward through a rectangular notch (12) provided in the center of the upper edge of the upward rear piece (4b) in the support base (4). 6a) is formed, and the back of the back of each side piece (6b) (6b) that hangs along the rear side of the rear piece (4b) of the support base (4) from both side ends of the projection (6a) A bearing hole (13) for receiving a shaft (62a) pivotally supporting the front lower end of the tilting gas spring (62) (see FIGS. 1 and 2) is provided. The upper end of the gas spring (62) is connected to the middle part of the backpack (20) with a shaft (62b).

上面板(６)の前部には、起立壁(6c)とその上端より前上方を向く前片(6d)とが設けられ、その上面板(６)の前部上面には、図１および図１０に示すように、側面視ほぼ下向きコ字状をなす押え金具(14)が取付けられている。 A front wall (6c) and a front piece (6d) facing the front upper side from the upper end thereof are provided at the front portion of the upper surface plate (6). As shown in FIG. 10, a presser fitting (14) having a substantially U shape in a side view is attached.

押え金具(14)は、左右方向に長い水平片(14a)と、その前後の縁より垂下する側片(14b)(14c)と、その下端両側部より前方および後方に突出する左右１対ずつの取付片(14d)(14d)(14e)(14e)とからなり、水平片(14a)と両側片(14b)(14c)とにより上向きの凹部が形成されている。前部の側片(14b)は、後部の側片(14c)より短く、かつ若干前下方に傾斜している。 The holding bracket (14) consists of a horizontal piece (14a) that is long in the left and right direction, side pieces (14b) and (14c) that hang from the front and rear edges, and a pair of left and right protrusions that protrude forward and backward from both sides of the lower end. Mounting pieces (14d), (14d), (14e) and (14e), and the horizontal pieces (14a) and the both side pieces (14b) and (14c) form an upward recess. The front side piece (14b) is shorter than the rear side piece (14c) and is slightly inclined forward and downward.

押え金具(14)は、その前部の取付片(14d)(14d)を上面板(６)における前片(6d)の上面に当接し、かつ後部の取付片(14e)(14e)を上面板(６)における起立壁(6c)より若干後方の部分に当接して、それぞれねじ(15)をもって止着することにより、上面板(６)の前部上面に取付けられている。 The presser bracket (14) has its front mounting pieces (14d) and (14d) abutted against the upper surface of the front piece (6d) of the upper surface plate (6) and the rear mounting pieces (14e) and (14e) The face plate (6) is attached to the upper surface of the front portion of the upper face plate (6) by coming into contact with a portion slightly behind the standing wall (6c) and fastening with a screw (15).

図３〜図５、および図７〜図１０に示すように、押え金具(14)と上面板(６)との間に形成された側面視ほぼ正方形の空所(16)には、左右１対の軸受(17)(17)が設けられている。また、支基ベース(４)の両側片(4a)における空所(16)に連続する部分には、Ｕ字状の切り欠き(18)が上端より切設され、これを通って軸受(17)が外側方に突出しうるようになっている。
この軸受(17)(17)は、背もたれ(19)を支持する側面視Ｌ字状の左右１対の背杆(20)(20)における背もたれ(19)の下端から前方に延出する部分の前端部に設けられた左右方向を向く軸(21)を支基(３)に枢支するためのものである(図１および図２参照)。 As shown in FIG. 3 to FIG. 5 and FIG. 7 to FIG. 10, the left and right sides of the space (16) formed between the presser fitting (14) and the upper plate (6) are substantially square in a side view. A pair of bearings (17), (17) is provided. In addition, a U-shaped notch (18) is cut from the upper end of a portion of the support base (4) that is continuous with the space (16) in both side pieces (4a), through which a bearing (17 ) Can protrude outward.
This bearing (17) (17) is a portion of the pair of left and right dorsal fins (20) (20) supporting the backrest (19) that extends forward from the lower end of the backrest (19). This is for pivotally supporting the left and right shaft (21) provided at the front end portion on the support base (3) (see FIGS. 1 and 2).

軸受(17)は、上下１対の半軸受部材(22)(22)からなり、各半軸受部材(22)は、側面視半円弧状の半軸受部(23)と、その外周の外側の部分に設けられた複数(ここでは２個)の半円板状のリブ(24)と、同じく内側の部分に設けられた複数(ここでは８個)の側面視ほぼ長方形のリブ(25)とからなっている。 The bearing (17) is composed of a pair of upper and lower half bearing members (22) and (22). Each half bearing member (22) includes a semi-bearing portion (23) having a semicircular arc shape in a side view and an outer periphery of the outer circumference. A plurality of (here, two) semi-disc-shaped ribs (24) provided in the part, and a plurality of (here, eight) ribs (25) provided in the inner part and having a substantially rectangular shape in side view, It is made up of.

各リブ(24)(25)は、半軸受部(23)の軸線と直交する方向を向き、かつ上記軸線の方向に適宜の間隔を保っている。そのうち、外側から２番目と３番目のリブ(24)(25)の間、および外側から４番目と５番目のリブ(25)(25)の間の間隔は、支基ベース(４)における側片(4a)の板厚とほぼ等しくしてある(図４および図８参照)。 The ribs (24) and (25) are oriented in a direction perpendicular to the axis of the semi-bearing portion (23), and are appropriately spaced in the direction of the axis. The distance between the second and third ribs (24) and (25) from the outside, and the distance between the fourth and fifth ribs (25) and (25) from the outside are the sides on the support base (4). It is almost equal to the thickness of the piece (4a) (see FIGS. 4 and 8).

この例では、上方の半軸受部材(22)の各リブ(25)の側面形は、上端が幅狭のほぼ台形とし、また半軸受部(23)の内側の端部に、平面視Ｕ字状の切り欠き(26)を設けてあるが、上方の半軸受部材(22)は、下方の半軸受部材(22)と全く同一の形状として、その上下を反転させただけのものとしてもよい。
因みに、切り欠き(26)は、図示を省略したガススプリング(11)操作用の操作レバーを配設する際に妨げとならないようにするためのものである。 In this example, the side shape of each rib (25) of the upper semi-bearing member (22) is a substantially trapezoidal shape with a narrow upper end, and is U-shaped in plan view at the inner end of the semi-bearing portion (23). The upper half bearing member (22) may have the same shape as the lower half bearing member (22), and the upper half bearing member (22) may be simply inverted up and down. .
Incidentally, the notch (26) is provided so as not to interfere with the operation lever for operating the gas spring (11) (not shown).

上下の半軸受部材(22)(22)は、互いに向き合わせて上下に重ねた状態で、上記空所(16)に嵌合され、各リブ(25)の外周縁がほぼ正方形の空所(16)の内面に当接することにより、上下方向および前後方向のがたつきが防止される。 The upper and lower semi-bearing members (22) and (22) are fitted into the void (16) in a state where they face each other and overlap each other, and the outer peripheral edge of each rib (25) is a substantially square void ( By contacting the inner surface of 16), rattling in the up-down direction and the front-rear direction is prevented.

なお、空所(16)のコーナー部の内面に対向する各リブ(25)のコーナー部には切り欠き(25a)が設けられ、各リブ(25)の外周縁が空所(16)のコーナー部の内面には当接しないようにしてあるので、精度の高い加工が困難な押え金具(14)や上面板(６)の折曲部分の加工精度を高める必要がなくなり、加工が容易になり、製造コストを低減できる。 In addition, a notch (25a) is provided in the corner portion of each rib (25) facing the inner surface of the corner portion of the void (16), and the outer peripheral edge of each rib (25) is the corner of the void (16). Since it does not come into contact with the inner surface of the part, there is no need to increase the processing accuracy of the bent part of the presser fitting (14) and the top plate (6), which are difficult to process with high accuracy, and processing becomes easier. Manufacturing cost can be reduced.

また、上下の半軸受部材(22)(22)における外側から２番目と３番目のリブ(24)(25)の間、または外側から４番目と５番目のリブ(25)(25)の間に(図５および図８の例では後者)、支基ベース(４)の各側片(4a)におけるＵ字状の切り欠き(18)の縁部を係合させることにより、各半軸受部材(22)における支基ベース(４)の各側片(4a)からの突出量を２段階に選択することができるとともに、２個のリブの間に切り欠き(18)の縁部が係合することにより、支基(３)に対する半軸受部材(22)(22)の左右方向の移動およびがたつきが阻止される。 Also, between the second and third ribs (24) and (25) from the outside in the upper and lower half bearing members (22) and (22), or between the fourth and fifth ribs (25) and (25) from the outside. (The latter in the examples of FIGS. 5 and 8), by engaging the edge of the U-shaped notch (18) in each side piece (4a) of the support base (4), each half bearing member The amount of protrusion from each side piece (4a) of the support base (4) in (22) can be selected in two stages, and the edge of the notch (18) is engaged between the two ribs By doing so, the movement and backlash of the half bearing members (22), (22) in the left-right direction with respect to the support base (3) are prevented.

この例では、図１０に示すように、上面板(６)における前片(6d)から、押え金具(14)の後部の取付片(14e)が取付けられた部分までの範囲により、軸受(17)を下方から受ける凹部を備える受け金具(27)が形成されている。すなわち、この例では、受け金具(27)は支基(３)と一体的に形成されている。 In this example, as shown in FIG. 10, depending on the range from the front piece (6d ) of the top plate (6) to the portion where the rear attachment piece (14e) of the presser fitting (14) is attached, the bearing (17 ) Is formed with a recess for receiving from below. That is, in this example, the receiving metal fitting (27) is formed integrally with the support base (3).

上下の半軸受部材(22)(22)を互いに向き合わせて上下に重ねることにより、上下の半軸受部(23)(23)間に形成される円形の軸受孔(28)には、背杆(20)(20)を枢支する軸(21)が回転自在に嵌合されている。 The upper and lower half bearing members (22) and (22) face each other and overlap each other so that the circular bearing hole (28) formed between the upper and lower half bearing portions (23) and (23) (20) A shaft (21) pivotally supporting (20) is rotatably fitted.

押え金具(31)と受け金具(32)とは、金属板の中央部に凹部(33)を折曲形成した互いに同一形状のものとしてある。 The holding metal fitting (31) and the receiving metal fitting (32) have the same shape with a concave portion (33) formed at the center of the metal plate.

押え金具(31)について詳細に説明すると、この押え金具(31)は、左右方向に長い水平片(34)と、その前後の縁より垂下する側片(35)(36)と、各側片(35)(36)の下端より前方および後方に突出する取付片(37)(38)とを備え、後方の取付片(38)から後方の側片(36)および水平片(34)の前端までにかけての中央部に、平面視方形の切り欠き(39)が形成されている。 The presser fitting (31) will be described in detail. The presser fitting (31) includes a horizontal piece (34) that is long in the left-right direction, side pieces (35) and (36) that hang from the front and rear edges, and each side piece. (35) (36) with mounting pieces (37) and (38) protruding forward and rearward from the lower end of the rear mounting piece (38) to the rear side piece (36) and the front end of the horizontal piece (34) A notch (39) having a square shape in plan view is formed in the central portion until the end.

水平片(34)における切り欠き(39)の両側縁には、支基カバー(５)を係止するための横長の係合孔(40)が設けられた突片(41)(41)が上向き突設されており、また水平片(34)における切り欠き(39)の両側には、３個ずつの位置決め孔(42)がそれぞれ左右方向に並べて設けられている。
前後の取付片(37)(38)の両側部には、ねじ挿通孔(43)とねじ孔(44)とが左右に対をなすように並べて設けられている。 On both side edges of the notch (39) in the horizontal piece (34), there are projecting pieces (41) and (41) provided with horizontally long engagement holes (40) for locking the support cover (5). Three positioning holes (42) are arranged in the left-right direction on both sides of the notch (39) in the horizontal piece (34).
Screw insertion holes (43) and screw holes (44) are provided side by side on both sides of the front and rear mounting pieces (37) and (38) so as to form a pair on the left and right.

受け金具(32)は、上述した押え金具(31)と全く同一の構造および形状であるので、同一の部分に上述したのと同一の符号を付して図示するに止め、詳細な説明は省略する。
すなわち、受け金具(32)は、押え金具(31)を前後方向を向く軸線を中心として１８０度回転させたものと同一であり、両突片(41)(41)が支基ベース(４)の前部中央に設けられた凹部(45)内に嵌合するようにして、またいずれかの(この例では最も外側の)位置決め孔(42)が、支基ベース(４)の底部における前両側部の上面に突設した短寸の位置決めピン(45a)(図４参照)に係合するようにして、支基ベース(４)に溶接されている。 Since the receiving metal fitting (32) has the same structure and shape as the above-described holding metal fitting (31), the same parts are denoted by the same reference numerals as described above, and are not illustrated in detail, and detailed description thereof is omitted. To do.
That is, the receiving metal fitting (32) is the same as the holding metal fitting (31) rotated by 180 degrees about the axis facing the front-rear direction, and both projecting pieces (41) (41) are provided on the support base (4). One of the positioning holes (42) (in this example, the outermost) is fitted in a recess (45) provided in the center of the front of the support base (4). It is welded to the support base (4) so as to engage with a short positioning pin (45a) (see FIG. 4) projecting from the upper surface of both sides.

押え金具(31)を受け金具(32)上の正規の位置に載置すると、押え金具(31)のねじ挿通孔(43)の直下に受け金具(32)のねじ孔(44)が位置するので、ねじ(46)を上方よりそのねじ挿通孔(43)を通してねじ孔(44)に螺合することにより、押え金具(31)の四隅を受け金具(32)に締着することができる。 When the presser fitting (31) is placed in a proper position on the receiving bracket (32), the screw hole (44) of the receiving bracket (32) is located directly below the screw insertion hole (43) of the presser fitting (31). Therefore, the four corners of the presser fitting (31) can be received and fastened to the fitting (32) by screwing the screw (46) from above into the screw hole (44) through the screw insertion hole (43).

軸受(30)は、同一形状の上下２個の半軸受部材(47)(47)を互いに向き合わせて重合したものよりなり、各半軸受部材(47)は、長円形を長手方向に２分割した形状の半軸受部(48)と、その外周の外側の部分に設けられた複数(ここでは２個)４個の半長円形の板状のリブ(49)と、半軸受部(48)の内側の部分の外周の前後に設けられた複数(ここでは５個)のほぼ三角形のリブ(50)とからなり、側面視の外形が押え金具(31)または受け金具(32)の凹部(33)の内面形状とほぼ補形をなすようにしてある。 The bearing (30) is formed by superposing two upper and lower half bearing members (47) and (47) having the same shape so as to face each other, and each half bearing member (47) divides an oval into two in the longitudinal direction. Shaped semi-bearing portion (48), a plurality of (here, two) four semi-ellipsoidal plate-like ribs (49) provided on the outer periphery of the outer periphery, and the semi-bearing portion (48) It is composed of a plurality of (in this case, five) substantially triangular ribs (50) provided before and after the outer periphery of the inner portion, and the outer shape in a side view is a concave portion of the presser fitting (31) or the receiving metal fitting (32) ( It is almost complementary to the inner shape of 33).

各リブ(49)(50)は、半軸受部(48)の軸線と直交する方向を向き、かつ上記軸線の方向に適宜の間隔を保っている。また、凹部(33)のコーナー部の内面に対向する各リブ(50)の先端部には切り欠き(51)が設けられている。 Each rib (49) (50) is oriented in a direction perpendicular to the axis of the semi-bearing portion (48) and has an appropriate interval in the direction of the axis. Further, a notch (51) is provided at the tip of each rib (50) facing the inner surface of the corner of the recess (33).

さらに、各半軸受部材(47)における半軸受部(48)の外周面には、押え金具(31)または受け金具(32)における３個ずつの位置決め孔(42)の内の２個のものに対応する位置に、平面視十字状の位置決め突起(52)が設けられている。 Further, on the outer peripheral surface of the half bearing portion (48) in each half bearing member (47), there are two of the three positioning holes (42) in the holding fitting (31) or the receiving fitting (32). A positioning projection (52) having a cross shape in a plan view is provided at a position corresponding to.

上下の半軸受部材(47)(47)は、互いに向き合わせて重合した状態で、押え金具(31)と受け金具(32)とを互いに向き合わせて接合したものの両凹部(33)(33)により形成される空所(53)に嵌合されることにより、互いに向き合った両半軸受部(48)によって若干後下方に向かって傾斜する長孔状の軸受孔(54)が形成されるとともに、各リブ(50)の外周縁がほぼ長方形の空所(53)の内面に当接することにより、上下方向および前後方向のがたつきが防止される。 The upper and lower half bearing members (47) and (47) are in a state where they are overlapped with each other, and both concave portions (33) and (33) are formed by joining the presser fitting (31) and the receiving fitting (32) to face each other. By fitting into the space (53) formed by the above, a half-hole-shaped bearing hole (54) inclined slightly rearward and downward is formed by the two semi-bearing portions (48) facing each other. Since the outer peripheral edge of each rib (50) is in contact with the inner surface of the substantially rectangular space (53) , rattling in the vertical direction and the front-rear direction is prevented.

なお、上述したように凹部(33)のコーナー部の内面に対向する各リブ(50)の先端部には切り欠き(51)が設けられ、各リブ(50)の外周縁が凹部(33)のコーナー部の内面には当接しないようにしてあるので、精度の高い加工が困難な押え金具(31)や受け金具(32)の折曲部分の加工精度を高める必要がなくなり、加工が容易になり、製造コストを低減できる。
As described above, the notch (51) is provided at the tip of each rib (50) facing the inner surface of the corner of the recess (33), and the outer peripheral edge of each rib (50) is the recess (33). Because it does not come into contact with the inner surface of the corner, it is not necessary to increase the processing accuracy of the bent part of the presser fitting (31) or the receiving metal fitting (32), which is difficult to process with high accuracy, making it easy to process Thus, the manufacturing cost can be reduced.

また、各半軸受部材(47)に設けられた２個ずつの位置決め突起(52)を、押え金具(31)または受け金具(32)における３個ずつの位置決め孔(42)の内の外側寄りの２個または内側寄りの２個に選択して係合することにより、各軸受(30)における支基ベース(４)の各側片(4a)からの突出量を２段階に選択することができるとともに、組み付け時における半軸受部材(47)と受け金具(32)または押え金具(31)との位置合わせが容易に行えるようになり、しかも組み付け後には、それらの係合により、支基(３)に対する半軸受部材(47)(47)の前後方向および左右方向の移動およびがたつきが阻止される。 In addition, two positioning projections (52) provided on each half bearing member (47) are arranged closer to the outside of the three positioning holes (42) in the holding metal fitting (31) or the receiving metal fitting (32). It is possible to select the amount of protrusion from each side piece (4a) of the support base (4) in each bearing (30) in two stages by selecting and engaging the two of them or the two closer to the inside In addition, it is possible to easily align the half bearing member (47) and the receiving metal fitting (32) or the holding metal fitting (31) at the time of assembling. The movement and backlash of the semi-bearing members 47, 47 with respect to 3) in the front-rear direction and the left-right direction are prevented.

さらに、２個の位置決め突起(52)をいずれの位置決め孔(42)に係合させるかによって定まる各半軸受部材(47)の支基ベース(４)の側面からの突出量の大小に応じて、各半軸受部材(47)における複数のリブ(49)(50)の間に形成される溝(55)のいずれかのものを、支基ベース(４)の各側片(4a)の前部におけるＵ字状の切り欠き(29)の縁部に係合させることにより、支基(３)に対する半軸受部材(47)(47)の左右方向の移動およびがたつきをより確実に防止することができる。 Further, according to the amount of protrusion from the side surface of the support base (4) of each half bearing member (47) determined by which positioning hole (42) the two positioning protrusions (52) are engaged with. Any one of the grooves (55) formed between the plurality of ribs (49), (50) in each half bearing member (47) is placed in front of each side piece (4a) of the support base (4). By engaging with the edge of the U-shaped notch (29) at the center, the lateral movement and rattling of the semi-bearing members (47) (47) with respect to the support base (3) can be prevented more reliably. can do.

前方の軸受(30)によって形成された軸受孔(54)には、座(57)を支持する平面視方形枠状の座フレーム(58)における左右方向を向く前部の水平支持軸(59)がその軸芯回りに回転可能かつ軸受孔(54)の長手方向である後下方に向かって摺動可能として嵌合されている。 In the bearing hole (54) formed by the front bearing (30), the front horizontal support shaft (59) facing the left-right direction in the square frame-like seat frame (58) supporting the seat (57) Are fitted so as to be rotatable around the axis and slidable downward in the longitudinal direction of the bearing hole (54).

座フレーム(58)における左右方向を向く後部の水平支持軸(60)は、左右１対の背杆(20)(20)における軸(21)寄りの中間部上面に、連結金具(61)(61)をもって連結されている。
したがって、背もたれ(19)とともに背杆(20)(20)が後傾させられると、座フレーム(58)における後部の水平支持軸(60)が座(57)の後部とともに後下方に移動させられ、それに伴って、座フレーム(58)における前部の水平支持軸(59)が座(57)とともに軸受孔(54)に沿って後下方に移動させられるようになっている。 The rear horizontal support shaft (60) facing the left-right direction of the seat frame (58) is connected to the upper surface of the middle portion of the pair of left and right dorsal fins (20, 20) close to the shaft (21) (61) ( 61).
Therefore, when the backrest (19) and the backrest (20) (20) are tilted backward, the rear horizontal support shaft (60) in the seat frame (58) is moved rearward and downward together with the rear portion of the seat (57). Accordingly, the front horizontal support shaft (59) of the seat frame (58) is moved rearward and downward along the bearing hole (54) together with the seat (57).

上述した上面板(６)における後方に突出した両側片(6b)(6b)の下端部と、両背杆(20)(20)の中間部との間には、背もたれ(19)を起立位置の方向に向かって付勢するガススプリング(62)(図１および図２参照)が設けられるとともに、支基ベース(４)内における上面板(６)の前端部と座フレーム(58)における前部の水平支持軸(59)との間には、水平支持軸(59)を前方に向かって付勢する圧縮コイルばね(63)とその付勢力を調節する調節手段(64)とが設けられているが(図３参照)、それらは本発明には直接関係しないので、詳細な説明は省略する。 The backrest (19) is in a standing position between the lower end of the both side pieces (6b) and (6b) protruding rearward in the upper surface plate (6) and the middle portion of the dorsal fins (20) and (20). A gas spring 62 (see FIGS. 1 and 2) for urging in the direction of is provided, and the front end of the upper surface plate 6 in the support base 4 and the front of the seat frame 58 A compression coil spring (63) for urging the horizontal support shaft (59) forward and an adjusting means (64) for adjusting the urging force are provided between the horizontal support shaft (59) of the portion. However, since they are not directly related to the present invention, a detailed description is omitted.

本発明は、上述のリクライニング椅子の構造のうち、軸受(17)(30)の支持構造に関するものであり、特許請求の範囲の各請求項に記載した構成により、発明の効果として上述したような効果を奏することができる。 The present invention relates to a support structure for the bearings (17) and (30) among the structures of the reclining chair described above, and has the above-described effects of the invention by the configuration described in each claim of the claims. There is an effect.

なお、後部の軸受(17)の支持構造においても、前部の軸受(30)の支持構造におけるのと同様に、上下対称構造の押え金具と受け金具とをもって軸受(17)を上下から挟み、その受け金具を支基ベース(４)または上面板(６)に固着したり、上下の半軸受部材(22)(22)とそれに対向する押え金具(14)または上面板(６)との対向面のいずれか一方に、上記位置決め突起(52)と同様の位置決め突起を設け、かつ他方に、上記位置決め突起が嵌合する位置決め孔を設けてもよい。
また、前部の軸受(30)の軸受孔(54)を、後部の軸受(17)の軸受孔(28)と同様の真円とし、背もたれ(19)の後傾に連動して、座(57)が前後方向にスライドすることなく、水平支持軸(59)を中心として回動だけするようにしてもよい。 In the support structure of the rear bearing (17), as in the support structure of the front bearing (30), the bearing (17) is sandwiched from above and below with a presser fitting and a receiving metal fitting having a vertically symmetrical structure, The support bracket is fixed to the support base (4) or the upper plate (6), or the upper and lower half bearing members (22) and (22) are opposed to the presser fitting (14) or the upper plate (6) opposite thereto. A positioning protrusion similar to the positioning protrusion (52) may be provided on any one of the surfaces, and a positioning hole into which the positioning protrusion is fitted may be provided on the other.
In addition, the bearing hole (54) of the front bearing (30) is a perfect circle similar to the bearing hole (28) of the rear bearing (17), and the seat ( 57) may be rotated only about the horizontal support shaft (59) without sliding in the front-rear direction.

本発明の軸受の支持構造は、上述したリクライニング椅子における場合だけでなく、２分割構造とした軸受けを適宜の固定体に固定するあらゆる場合に適用することができる。 The bearing support structure of the present invention can be applied not only to the above-described reclining chair, but also to any case where a bearing having a two-part structure is fixed to an appropriate fixed body.

本発明の軸受の支持構造を備えるリクライニング椅子の側面図である。It is a side view of a reclining chair provided with the support structure of the bearing of the present invention. 同じく、要部の分解斜視図である。Similarly, it is a disassembled perspective view of the principal part. 同じく、支基カバーを外したときの支基を後上方より見た斜視図である。Similarly, it is the perspective view which looked at the support base when the support cover was removed from the rear upper side. 同じく、支基ベースと後部の軸受との分解斜視図である。Similarly, it is a disassembled perspective view of a support base and a rear bearing. 同じく、支基ベースに後部の軸受を装着したときの部分拡大斜視図である。Similarly, it is a partial enlarged perspective view when the rear bearing is mounted on the support base. 同じく、支基ベースと前部の軸受の支持部と分解斜視図である。Similarly, it is a support part of a support base and a front bearing, and an exploded perspective view. 同じく、支基と座フレームとの主要部材のみの中央縦断側面図である。Similarly, it is a center vertical side view of only the main members of the support base and the seat frame. 同じく、座フレームの後部の支持軸の中心線を含む垂直面で縦断した縦断正面図である。Similarly, it is a longitudinal front view longitudinally cut along a vertical plane including the center line of the support shaft at the rear portion of the seat frame. 図８のIX−IX線に沿う主要部材の縦断側面図である。It is a vertical side view of the main member along the IX-IX line of FIG. 同じく、図９の要部の拡大図である。Similarly, it is an enlarged view of the principal part of FIG.

符号の説明Explanation of symbols

(１)脚
(２)脚柱
(３)支基
(４)支基ベース
(4a)側片
(4b)後片
(５)支基カバー
(６)上面板
(6a)突部
(6b)側片
(6c)起立壁
(6d)前片
(７)嵌合孔
(８)筒体
(8a)拡径フランジ
(９)補強材
(10)嵌合孔
(11)ガススプリング
(12)切り欠き
(13)軸受孔
(14)押え金具
(14a)水平片
(14b)(14c)側片
(14d)(14e)取付片
(15)ねじ
(16)空所
(17)軸受
(18)切り欠き
(19)背もたれ
(20)背杆
(21)軸
(22)半軸受部材
(23)半軸受部
(24)(25)リブ
(25a)切り欠き
(26)切り欠き
(27)受け金具
(28)軸受孔
(29)切り欠き
(30)軸受
(31)押え金具
(32)受け金具
(33)凹部
(34)水平片
(35)(36)側片
(37)(38)取付片
(39)切り欠き
(40)係合孔
(41)突片
(42)位置決め孔
(43)ねじ挿通孔
(44)ねじ孔
(45)凹部
(45a)位置決めピン
(46)ねじ
(47)半軸受部材
(48)半軸受部
(49)(50)リブ
(51)切り欠き
(52)位置決め突起
(53)空所
(54)軸受孔
(55)溝
(57)座
(58)座フレーム
(59)(60)水平支持軸
(61)連結金具
(62)ガススプリング
(63)圧縮コイルばね
(64)調節手段 (1) Leg
(2) Pillar
(3) Support base
(4) Base basis
(4a) Side piece
(4b) Rear piece
(5) Support cover
(6) Top plate
(6a) Projection
(6b) Side piece
(6c) Standing wall
(6d) Front piece
(7) Mating hole
(8) Tube
(8a) Expanded flange
(9) Reinforcing material
(10) Mating hole
(11) Gas spring
(12) Notch
(13) Bearing hole
(14) Presser bracket
(14a) Horizontal piece
(14b) (14c) side piece
(14d) (14e) Mounting piece
(15) Screw
(16) Empty space
(17) Bearing
(18) Notch
(19) Backrest
(20) Backpack
(21) axis
(22) Half bearing member
(23) Half bearing
(24) (25) Rib
(25a) Notch
(26) Notch
(27) Bracket
(28) Bearing hole
(29) Notch
(30) Bearing
(31) Presser bracket
(32) Bracket
(33) Recess
(34) Horizontal piece
(35) (36) side piece
(37) (38) Mounting piece
(39) Notch
(40) Engagement hole
(41) Projection
(42) Positioning hole
(43) Screw insertion hole
(44) Screw hole
(45) Recess
(45a) Locating pin
(46) Screw
(47) Half bearing member
(48) Half bearing
(49) (50) Rib
(51) Notch
(52) Positioning protrusion
(53) Empty space
(54) Bearing hole
(55) Groove
(57) Seat
(58) Seat frame
(59) (60) Horizontal support shaft
(61) Connecting bracket
(62) Gas spring
(63) Compression coil spring
(64) Adjustment means

Claims

側面視半円弧状の半軸受部の外周面に、前記半軸受部の軸線と直交する方向を向く複数のリブを、前記軸線の方向に適宜の間隔を保って突設することにより、側面視における全体の外形をほぼ長方形とした２個の半軸受部材を互いに向き合わせて重合したものを、上面に凹部を有する受け金具と下面に凹部を有する押え金具とを互いに向き合わせて接合したものの前記両凹部により形成される空所に、前記各リブの外周縁が空所の内面に当接するようにして嵌合し、前記受け金具を固定体に固定し、かつ互いに向き合わされた１対の半軸受部材により形成された軸受孔により、その中に嵌合された軸を回転自在に支持するようにし、さらに、互いに隣接する前記リブの間隔のうち複数のものを、前記固定体における側片の板厚とほぼ等しくし、複数の前記間隔のいずれかに、前記側片に設けたＵ字状の切欠きを選択的に係合させて、半軸受部材を前記固定体に固定することにより、前記半軸受部材における側片からの突出量を段階的に選択できるようにしたことを特徴とする軸受の支持構造。 A plurality of ribs facing the direction orthogonal to the axis of the semi-bearing portion are provided on the outer peripheral surface of the semi-arc-shaped semi-bearing portion in a side view so as to protrude in an appropriate interval in the direction of the axis. In which two half bearing members having a substantially rectangular overall outer shape are aligned to face each other, and a receiving metal fitting having a concave portion on the upper surface and a holding metal fitting having a concave portion on the lower surface are joined to face each other. A pair of halves are fitted into the space formed by both concave portions so that the outer peripheral edge of each rib is in contact with the inner surface of the space, the receiving metal fitting is fixed to the fixed body, and facing each other. A bearing hole formed by the bearing member rotatably supports the shaft fitted therein, and further, a plurality of intervals between the ribs adjacent to each other are set to the side piece of the fixed body. It is almost equal to the plate thickness By selectively engaging a U-shaped notch provided in the side piece in any of the plurality of intervals, and fixing the half bearing member to the fixed body, the side piece in the half bearing member A support structure for a bearing, wherein the amount of protrusion from the shaft can be selected in stages.

長円形を長手方向に２分割した形状とした半軸受部の外周面に、前記半軸受部の軸線と直交する方向を向く複数のリブを、前記軸線の方向に適宜の間隔を保って突設することにより、側面視における全体の外形をほぼ長方形とした２個の半軸受部材を互いに向き合わせて重合したものを、上面に凹部を有する受け金具と下面に凹部を有する押え金具とを互いに向き合わせて接合したものの前記両凹部により形成される空所に、前記各リブの外周縁が空所の内面に当接するようにして嵌合し、前記受け金具を固定体に固定し、かつ互いに向き合わされた１対の半軸受部材により形成された長孔状の軸受孔により、その中に嵌合された軸を回転自在および長孔の長手方向に摺動可能に支持するようにし、さらに、互いに隣接する前記リブの間隔のうち複数のものを、前記固定体における側片の板厚とほぼ等しくし、複数の前記間隔のいずれかに、前記側片に設けたＵ字状の切欠きを選択的に係合させて、半軸受部材を前記固定体に固定することにより、前記半軸受部材における側片からの突出量を段階的に選択できるようにしたことを特徴とする軸受の支持構造。 A plurality of ribs facing the direction perpendicular to the axis of the semi-bearing portion are provided on the outer peripheral surface of the semi-bearing portion having a shape obtained by dividing the oval into two in the longitudinal direction, with appropriate intervals in the direction of the axis. As a result, two half bearing members having a generally rectangular outer shape in a side view are superposed on each other so that a receiving metal fitting having a concave portion on the upper surface and a holding metal fitting having a concave portion on the lower surface face each other. Although fitted together, it is fitted into the space formed by the two concave portions so that the outer peripheral edge of each rib is in contact with the inner surface of the space, and the receiving bracket is fixed to the fixed body and faces each other. A long hole-shaped bearing hole formed by a pair of semi-bearing members is configured to support the shaft fitted therein so as to be rotatable and slidable in the longitudinal direction of the long hole , and further to each other. Between the adjacent ribs A plurality of things, approximately equal to the plate thickness of the side piece in the fixed body, selectively engaging a U-shaped notch provided in the side piece to any of the plurality of intervals, A support structure for a bearing, characterized in that a projection amount from a side piece of the half bearing member can be selected stepwise by fixing the half bearing member to the fixed body.

半軸受部材と、受け金具または押え金具とのいずれか一方に、位置決め突起を設け、かつ他方に、前記位置決め突起が嵌合する位置決め孔を設けた請求項１または２記載の軸受の支持構造。 The bearing support structure according to claim 1 or 2 , wherein a positioning projection is provided on one of the half bearing member and the receiving metal fitting or the holding metal fitting, and a positioning hole is provided on the other for fitting the positioning projection.

受け金具と押え金具とを、金属板の中央部に凹部を折曲形成した互いに同一形状のものとした請求項１〜３のいずれかに記載の軸受の支持構造。 The bearing support structure according to any one of claims 1 to 3, wherein the receiving metal fitting and the holding metal fitting are formed in the same shape with a concave portion formed at the center of the metal plate.

受け金具および押え金具の凹部のコーナー部の内面に対向するリブのコーナー部に切り欠きを設けた請求項１〜４のいずれかに記載の軸受の支持構造。 The bearing support structure according to any one of claims 1 to 4, wherein a notch is provided in a corner portion of the rib facing the inner surface of the corner portion of the concave portion of the receiving metal fitting and the holding metal fitting.

脚の上端に設けた支基に、背もたれを後傾可能として枢支したリクライニング椅子において、
前記支基の後部に、請求項１またはそれに従属する請求項３〜５のいずれかに記載の軸受の支持構造を、その受け金具を支基と一体的に形成して設け、背もたれを支基に枢支する左右方向を向く軸を、軸受孔に回転自在に嵌合したことを特徴とするリクライニング椅子。 In a reclining chair that pivots on the support base provided at the upper end of the leg so that the backrest can be tilted backward,
The bearing support structure according to claim 1 or any one of claims 3 to 5 dependent thereon is provided at a rear portion of the support base, the receiving metal fitting is formed integrally with the support base, and the backrest is provided. A reclining chair characterized in that a shaft facing in the left-right direction that pivots on the shaft is rotatably fitted in a bearing hole.

脚の上端に設けた支基に枢支された背もたれの後傾に連動して、座が支基に対して後下方に移動するようにしたリクライニング椅子において、
前記支基の前部に、請求項２またはそれに従属する請求項３〜５のいずれかに記載の軸受の支持構造を、その受け金具が支基に固着されるようにして、かつ軸受孔の長手方向が後下方を向くようにして設け、座の前部を支持する左右方向を向く軸を、回転可能かつ後下方に摺動可能として嵌合したことを特徴とするリクライニング椅子。 In a reclining chair in which the seat moves rearward and downward relative to the support base in conjunction with the back tilt of the backrest pivotally supported by the support base provided at the upper end of the leg,
The support structure for a bearing according to claim 2 or any one of claims 3 to 5 dependent thereon is arranged at a front portion of the support base so that the metal fitting is fixed to the support base, and A reclining chair provided such that a longitudinal direction thereof is provided facing rearward and a shaft facing in a left-right direction that supports a front portion of a seat is rotatably fitted and slidable rearward and downward.