JP7278921B2

JP7278921B2 - Fixture load bearing structure

Info

Publication number: JP7278921B2
Application number: JP2019187040A
Authority: JP
Inventors: 春彦北嶋
Original assignee: Okamura Corp
Current assignee: Okamura Corp
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2023-05-22
Anticipated expiration: 2039-10-10
Also published as: JP2021061913A

Description

本発明は、机等の什器の荷重を支持する什器の荷重支持構造体に関する。 The present invention relates to a load support structure for furniture such as a desk that supports the load of the furniture.

従来、例えば折り畳み式の天板は使用時には脚部で天板を水平に支持し、不使用時には天板を脚部に近い位置に縦方向に傾斜させて小さなスペースに収納できるようにしている。そのため、脚部は天板を支持する主脚と主脚に連結して主脚を補強し支持する補助脚とを人型に構成して強度と省スペースを確保している。
例えば特許文献１に記載された机の脚装置は、天板を設置面に対して所定角度で支持する主脚に対して補助脚を設置面に対して主脚より小さい角度で配設して主脚に接続している。しかも、補助脚は主脚の外側から前面部が当接し、前面部をボルトで主脚の接続部に固定している。設置面から補助脚に上下方向に加わる荷重と、主脚に対して補助脚を開く方向に加わる荷重は前面部とボルトで受けている。 Conventionally, for example, a foldable top plate is horizontally supported by legs when in use, and tilted vertically near the legs when not in use so that the top plate can be stored in a small space. For this reason, the legs are constructed in the shape of a human being, including main legs that support the top plate and auxiliary legs that are connected to the main legs to reinforce and support the main legs, thereby ensuring strength and space saving.
For example, a desk leg device described in Patent Document 1 has a main leg that supports a tabletop at a predetermined angle with respect to an installation surface, and an auxiliary leg arranged at an angle smaller than that of the main leg with respect to the installation surface. Connected to the main landing gear. Moreover, the front portion of the auxiliary leg abuts from the outside of the main leg, and the front portion is fixed to the connection portion of the main leg with bolts. The load applied to the auxiliary leg from the installation surface in the vertical direction and the load applied to the main leg in the direction to open the auxiliary leg are received by the front part and bolts.

また、特許文献２に記載された家具の脚装置は、上述の特許文献１と同様に、主杆の途中の接続部に枝杆の接合部が人型に接続されている。枝杆の接合部は補強金具を介して主杆にボルトで連結されており、補強金具は４本の係合爪が主杆の係合穴に係合している。これにより、設置面から枝杆に上下方向に加わる荷重は補強金具の係合爪の厚みで受けると共に、主杆に対して枝杆を開く方向に加わる荷重は係合爪の側面で受けている。 Further, in the furniture leg device described in Patent Document 2, as in Patent Document 1 described above, the connecting portion of the branch rod is connected to the connecting portion in the middle of the main rod in a human shape. A joint portion of the branch rod is connected to the main rod by a bolt through a reinforcing metal fitting, and four engaging claws of the reinforcing metal fitting are engaged with the engaging holes of the main rod. As a result, the load applied to the branch rod in the vertical direction from the installation surface is received by the thickness of the engaging claw of the reinforcing metal fitting, and the load applied to the main rod in the direction of opening the branch rod is received by the side surface of the engaging claw. .

特開２００４－１２１４３９号公報JP-A-2004-121439 特開２０１５－９２９６７号公報JP 2015-92967 A

しかしながら、上述した特許文献１に記載された机の脚装置は、補助脚が設置面から受ける上下方向の荷重や衝撃、また主脚に対して補助脚を開く方向の荷重はいずれも前面部とボルトで受けているにすぎない。そのため、ボルトに係る負荷が大きく、特に補助脚を開く方向の荷重に抗しきれないという欠点がある。
また、特許文献２に記載された家具の脚装置においても、主杆に対して枝杆を開く方向に加わる荷重は係合爪の側面で受けるため、係合爪の側面の厚さの強度が不十分であり、枝杆を開く方向の荷重に耐えられないおそれがある。 However, in the desk leg device described in Patent Document 1, the vertical load and impact that the auxiliary leg receives from the installation surface, and the load in the direction in which the auxiliary leg opens with respect to the main leg, are both applied to the front part. It is only received by bolts. Therefore, there is a drawback that the load on the bolt is large, and the load in the direction of opening the auxiliary leg cannot be fully resisted.
Also, in the furniture leg device described in Patent Document 2, the load applied to the main rod in the direction in which the branch rod opens is received by the side surface of the engaging claw, so the strength of the thickness of the side surface of the engaging claw is large. It is insufficient and may not be able to withstand the load in the direction of opening the branch rod.

本発明は、このような課題に鑑みてなされたもので、第１脚部材に対して第２脚部材を水平方向に開く方向の荷重を確実に受け止めることができる什器の荷重支持構造体を提供することを目的とする。 SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and provides a load support structure for furniture that can reliably receive the load in the direction in which the second leg member is horizontally opened with respect to the first leg member. intended to

本発明による什器の荷重支持構造体は、設置面に対して上下方向に起立する第１脚部材と、設置面に対して所定角度で起立して前記第１脚部材に接続部で連結された第２脚部材と、を備えた什器の荷重支持構造体であって、接続部において、第１脚部材は、什器の奥行き方向両側に形成された一対の凹溝と、凹溝の間で隆起すると共に嵌合穴が形成された凸部とを備え、第２脚部材は、凹溝及び凸部に係合する断面略コの字状であると共にボルト穴が形成された凹部を備えていて、嵌合穴を通してボルト穴に固定ボルトを締め込むことで第１脚部材及び第２脚部材が連結されていることを特徴とする。
本発明によれば、第１脚部材にかかる上下方向の荷重は第１脚部材で受け止めることができる。第２脚部材にかかる上下方向の荷重は、接続部において、第１脚部材の凸部及びその両側の凹溝に凹部を係合させた上に固定ボルトを嵌合穴に通してボルト穴に締め込むことで第１脚部材と第２脚部材を固定することができる。しかも、第２脚部材にかかる上下方向の荷重と水平方向の荷重は凸部及び凹溝と凹部との間で受け止めることができ、固定ボルトに上下方向の荷重と水平方向の荷重が働くことを抑制できる。 A load supporting structure for furniture according to the present invention includes a first leg member standing vertically with respect to an installation surface, and standing at a predetermined angle with respect to the installation surface and connected to the first leg member by a connecting portion. and a second leg member, wherein the first leg member is raised between a pair of concave grooves formed on both sides of the fixture in the depth direction and the concave groove at the connecting portion. and a projection having a fitting hole formed thereon, and the second leg member has a recess having a substantially U-shaped cross section that engages with the groove and the projection and having a bolt hole formed therein. and the first leg member and the second leg member are connected by tightening a fixing bolt through the fitting hole and into the bolt hole.
According to the present invention, the vertical load applied to the first leg member can be received by the first leg member. The load in the vertical direction applied to the second leg member is applied to the connection portion by engaging the convex portion of the first leg member and the concave grooves on both sides of the convex portion and the concave grooves on both sides of the concave portion, and then passing the fixing bolt through the fitting hole and into the bolt hole. By tightening, the first leg member and the second leg member can be fixed. Moreover, the vertical load and the horizontal load applied to the second leg member can be received between the convex portion and the concave groove and the concave portion, thereby preventing the vertical load and the horizontal load from acting on the fixing bolt. can be suppressed.

また、凹部には凸部の嵌合穴に嵌合するボス部が形成され、ボス部にボルト穴が形成されていることが好ましい。
凸部の嵌合穴とこれに嵌合するボス部によっても上下方向と水平方向の荷重を受け止めることができるため、より一層、固定ボルトに上下方向の荷重と水平方向の荷重が働くことを抑制できる。 Moreover, it is preferable that a boss portion that fits into the fitting hole of the convex portion is formed in the concave portion, and a bolt hole is formed in the boss portion.
The fitting hole of the convex portion and the boss portion that fits into it can also receive vertical and horizontal loads, further suppressing vertical and horizontal loads acting on the fixing bolt. can.

また、凸部の凹溝に至る端部は凸曲面状に形成されていることが好ましい。
凸部の凹溝に至る端部を凸曲面状に形成することで凸部の凹溝との間の肉厚を厚く確保することができるため、第２脚部材の上下方向と水平方向の荷重を凹部と凸部を係合させることでより確実に受け止めることができる。 In addition, it is preferable that the end portion of the convex portion reaching the concave groove is formed in a convex curved shape.
By forming the ends of the projections reaching the grooves into a convex curved shape, it is possible to ensure a large wall thickness between the projections and the grooves, so that the vertical and horizontal loads of the second leg member can be received more reliably by engaging the concave portion and the convex portion.

また、第２脚部材は凹部を有する第１アーム部と、第１アーム部の長手方向下端部から延びる第２アーム部とが略Ｌ字状に形成されていてもよい。
第２脚部材を第１アーム部及び第２アーム部からなる略Ｌ字状に形成したことで、第２脚部材にかかる上下方向及び水平方向の荷重を接続部の凸部と凹部で受け止めて第２脚部材の回転を抑止することができる。 Also, the second leg member may have a substantially L-shaped first arm portion having a concave portion and a second arm portion extending from the longitudinal lower end portion of the first arm portion.
By forming the second leg member in a substantially L shape composed of the first arm portion and the second arm portion, the vertical and horizontal loads applied to the second leg member are received by the protrusions and recesses of the connecting portion. Rotation of the second leg member can be suppressed.

また、第２脚部材における凹部を形成する底部及びその両側の側壁部は、什器の奥行き方向の一端側より他端側がより肉厚に形成されている。
第２脚部材を外側に開く方向の荷重に対して凹部の底部及びその両側の側壁部を、什器の奥行き方向の一端側(後ろ側)より他端側（前側）をより肉厚に形成したから、凸部との関係で回転を阻止してより確実に受け止めることができる。 In addition, the bottom portion forming the recess in the second leg member and the side wall portions on both sides thereof are formed to be thicker on the other end side than on the one end side in the depth direction of the furniture.
The bottom of the recess and the sidewalls on both sides of the recess are formed thicker at the other end (front side) than one end (rear side) in the depth direction of the fixture against the load in the direction of opening the second leg member outward. Therefore, it is possible to prevent the rotation in relation to the projection and to receive it more reliably.

本発明に係る什器の荷重支持構造体によれば、第２脚部材に係る上下方向の荷重は第１脚部材の接続部に設けた凸部及びその両側の凹溝と第２脚部材の略コの字状の凹部とで受け止めることができる。また、第１脚部材に対する第２脚部材を開く方向の荷重は凸部及び凹溝と凹部との係合で受け止めることができる。そのため、固定ボルトに荷重が働くことを抑制できて接続部の強度と耐久性が高い。 According to the load support structure for furniture according to the present invention, the vertical load applied to the second leg member is applied to the projection provided at the connecting portion of the first leg member, the concave grooves on both sides thereof, and the second leg member. It can be received by the U-shaped concave portion. Further, the load in the direction of opening the second leg member with respect to the first leg member can be received by the engagement between the convex portion and the concave groove and the concave portion. Therefore, the load acting on the fixing bolt can be suppressed, and the strength and durability of the connecting portion are high.

本発明の実施形態による天板付き什器の斜視図である。1 is a perspective view of a fixture with a top plate according to an embodiment of the present invention; FIG. 図１に示す天板付き什器の主脚と補助脚の接続部を内側から見た側面図である。It is the side view which looked at the connection part of the main leg of the furniture with a top plate shown in FIG. 1, and an auxiliary leg from the inside. 主脚と補助脚の接続部を外側から見た要部説明図である。FIG. 4 is an explanatory view of the main part of the joint between the main landing gear and the auxiliary landing gear viewed from the outside; 図３に示す主脚と補助脚の接続部の分解斜視図である。FIG. 4 is an exploded perspective view of a connecting portion between the main leg and the auxiliary leg shown in FIG. 3; 図３に示す主脚と補助脚の接続部のＡ－Ａ線断面図である。FIG. 4 is a cross-sectional view along the line AA of the connecting portion between the main leg and the auxiliary leg shown in FIG. 3; 図５の接続部の上側の固定ボルト締結部を示す断面図である。FIG. 6 is a cross-sectional view showing a fixing bolt fastening portion on the upper side of the connecting portion of FIG. 5; 図５のＢ－Ｂ線断面図である。FIG. 6 is a cross-sectional view taken along line BB of FIG. 5; 図５のＣ－Ｃ線断面図である。6 is a cross-sectional view taken along line CC of FIG. 5; FIG.

以下、本発明の実施形態による天板付き什器１を添付図面に基づいて説明する。
図１において、天板付き什器１は、左右一対の脚部２と、脚部２の上に設置されたテーブルとしての天板３と、を備えている。略長方形板状をなす天板３の先端側には幕板４が天板３または脚部２に支持され、幕板４は天板３に対して略垂直に垂下している。天板３は脚部２に対して折り畳み可能であり、使用時には図１に示すように水平に設置され、不使用時には幕板４の上方に縦方向に傾斜させて支持される。不使用時には天板付き什器１は小さいスペースに収納可能である。天板３の下側には１または複数の椅子５を設置可能である。
なお、本実施形態による天板付き什器１において、図１に示すように、什器１の幅方向（天板３の長手方向）外側を外側、中央側を内側とし、什器１の奥行き方向（天板３の短手方向)の幕板４側を前側、椅子５側を後ろ側というものとする。 Hereinafter, fixtures 1 with a top plate according to embodiments of the present invention will be described based on the accompanying drawings.
In FIG. 1 , a fixture with a top plate 1 includes a pair of left and right legs 2 and a top plate 3 as a table placed on the legs 2 . A curtain plate 4 is supported by the top plate 3 or the legs 2 on the tip end side of the top plate 3 having a substantially rectangular plate shape, and the curtain plate 4 hangs down from the top plate 3 substantially perpendicularly. The top plate 3 is foldable with respect to the legs 2, and is horizontally installed as shown in FIG. When not in use, the furniture 1 with a top plate can be stored in a small space. One or more chairs 5 can be placed under the top plate 3 .
In addition, in the fixture 1 with a top plate according to this embodiment, as shown in FIG. The side of the curtain plate 4 in the lateral direction of the board 3) is called the front side, and the side of the chair 5 is called the rear side.

次に脚部２について、図２～図８により詳細に説明する。
図２及び図３に示すように、脚部２は床面等の設置面ｆに対して垂直に近い傾斜角で起立する主脚７と、主脚７よりも設置面に対する傾斜角が小さい角度で起立する補助脚８とを備えている。左右一対の脚部２を構成する主脚７と補助脚８は例えばアルミダイキャスト等の金属で形成されている。主脚７の下端部には走行可能なキャスター９が設置され、補助脚８の下端部にも同様なキャスター１０が設置されている。
キャスター１０にはロック機構１０ａが設置されているが、キャスター９に設置されていてもよいし、設置しなくてもよい。主脚７は垂直に近い角度であるため、天板３及びキャスター９から上下方向にかかる荷重は主脚７で受けることができ、上下方向の衝撃に耐え得る強度を有している。 Next, the leg portion 2 will be described in detail with reference to FIGS. 2 to 8. FIG.
As shown in FIGS. 2 and 3, the leg 2 has a main leg 7 that stands at an inclination angle close to perpendicular to the installation surface f such as the floor, and an angle that is smaller than the inclination angle with respect to the installation surface than the main leg 7. It is provided with an auxiliary leg 8 that stands up at. A main leg 7 and an auxiliary leg 8 forming a pair of left and right legs 2 are made of metal such as aluminum die-cast. A movable caster 9 is installed on the lower end of the main leg 7 , and a similar caster 10 is installed on the lower end of the auxiliary leg 8 .
Although the lock mechanism 10a is installed on the caster 10, it may be installed on the caster 9 or may not be installed. Since the main leg 7 is at an angle close to vertical, the main leg 7 can receive the load applied in the vertical direction from the top plate 3 and the casters 9, and has the strength to withstand the impact in the vertical direction.

図３及び図４において、主脚７の長手方向中間部には接続部１１が形成され、この接続部１１に補助脚８の上端部が連結されて、脚部２が略人型に形成されている。主脚７の接続部１１には凹陥部１１ａが形成され、その中央には上下方向に延びる略蒲鉾状の凸部１３が突出して形成されている。什器１の奥行き方向に一対の凹溝（くぼみ）１３ａ、１３ｂが凸部１３に沿って形成されている。しかも、凸部１３は主脚７の接続部１１以外の表面よりも凹んだ位置に形成されている。
図５及び図６において、凸部１３の背面側、即ち什器１の幅方向における内側には主脚７の凹陥部１１ａの肉厚を確保するための隆起部７ａが形成されている。凸部１３の表面は後ろ側から前側に向けて幅方向に厚みが小さくなるように傾斜している(図４、図８参照)。しかも、この凸部１３と隆起部７ａとの間には上下方向に一対の嵌合穴１４が形成されている。嵌合穴１４の底部と隆起部７ａとの間には固定ボルト１６を挿通させるための挿通穴１７が形成されている。挿通穴１７には固定ボルト１６の頭部を着座させる拡径された凹溝部を有している。 3 and 4, a connecting portion 11 is formed in the middle portion of the main leg 7 in the longitudinal direction, and the upper end portion of the auxiliary leg 8 is connected to this connecting portion 11, so that the leg portion 2 is formed in a substantially human shape. ing. A connecting portion 11 of the main leg 7 is formed with a concave portion 11a, and in the center of the concave portion 11a, a substantially semicylindrical projection 13 extending in the vertical direction is formed so as to protrude. A pair of concave grooves (hollows) 13 a and 13 b are formed along the convex portion 13 in the depth direction of the fixture 1 . Moreover, the convex portion 13 is formed at a position recessed from the surface of the main leg 7 other than the connection portion 11 .
5 and 6, a raised portion 7a is formed on the rear side of the raised portion 13, that is, on the inner side of the fixture 1 in the width direction to ensure the thickness of the recessed portion 11a of the main leg 7. As shown in FIG. The surface of the convex portion 13 is inclined so that the thickness decreases in the width direction from the rear side to the front side (see FIGS. 4 and 8). Moreover, a pair of fitting holes 14 are formed in the vertical direction between the projection 13 and the raised portion 7a. An insertion hole 17 for inserting a fixing bolt 16 is formed between the bottom portion of the fitting hole 14 and the raised portion 7a. The insertion hole 17 has an enlarged recessed groove in which the head of the fixing bolt 16 is seated.

補助脚８は、接続部１１に係合する断面略コの字状の凹部１８が形成された第１アーム部８ａと補助脚８の長手方向に延びる第２アーム部８ｂとで側面視略Ｌ字状に形成されている(図３参照)。凹部１８は主脚７の長手方向に沿って形成され、主脚７の凸部１３に当接する底部１８ａとその幅方向両端部に形成されていて凹溝１３ａ、１３ｂに係合する側壁部１８ｂ、１８ｃとで形成されている。
しかも、凹部１８にはその上下方向に２本のボス部１９が突出して形成され、ボス部１９はそれぞれ蒲鉾型の凸部１３に形成された嵌合穴１４に嵌合可能である。ボス部１９には固定ボルト１６を螺合させるためのボルト穴１９ａが形成されているが、ボルト穴１９ａは第１アーム部８ａ内に底部があり、第１アーム部８ａを貫通していない。 The auxiliary leg 8 is composed of a first arm portion 8a formed with a concave portion 18 having a substantially U-shaped cross section that engages with the connecting portion 11 and a second arm portion 8b extending in the longitudinal direction of the auxiliary leg 8, and is approximately L in side view. It is formed in a letter shape (see FIG. 3). The concave portion 18 is formed along the longitudinal direction of the main leg 7, and includes a bottom portion 18a that abuts on the convex portion 13 of the main leg 7, and side wall portions 18b that are formed at both ends in the width direction and engage with the concave grooves 13a and 13b. , 18c.
Moreover, two boss portions 19 are formed in the concave portion 18 so as to protrude in the vertical direction, and the boss portions 19 can be fitted into the fitting holes 14 formed in the kamaboko-shaped convex portion 13 . A bolt hole 19a for screwing the fixing bolt 16 is formed in the boss portion 19, but the bottom portion of the bolt hole 19a is in the first arm portion 8a and does not penetrate the first arm portion 8a.

図６において、一例として固定ボルト１６の軸部の直径をｄとすると、主脚７において挿通穴１７の固定ボルト１６の頭部を除く長さをｄとし、ボス部１９に形成したボルト穴１９ａの長さは２ｄに形成することが好ましい。凹部１８に配列させた２つのボス部１９は上下方向に配列され、補助脚８の第１アーム部８ａと同一方向に配列されている。しかも第２アーム部８ｂは第１アーム部８ａにおける下側のボス部１９の領域から延びて略Ｌ字状に形成されている。この場合、略Ｌ字状の補助脚８にかかるキャスター１０の上向きの負荷は下側のボス部１９を通して反時計回りに回転する方向にかかるため、固定ボルト１６に負荷がかかることを抑制できる。 In FIG. 6, as an example, if the diameter of the shaft portion of the fixing bolt 16 is d, the length of the insertion hole 17 in the main leg 7 excluding the head of the fixing bolt 16 is d, and the bolt hole 19a formed in the boss portion 19 is d. is preferably formed to have a length of 2d. The two boss portions 19 arranged in the concave portion 18 are arranged in the vertical direction and arranged in the same direction as the first arm portion 8a of the auxiliary leg 8. As shown in FIG. Moreover, the second arm portion 8b extends from the area of the boss portion 19 on the lower side of the first arm portion 8a and is formed in a substantially L shape. In this case, the upward load of the caster 10 applied to the substantially L-shaped auxiliary leg 8 is applied in the direction of counterclockwise rotation through the lower boss portion 19, so that the load on the fixing bolt 16 can be suppressed.

また、図７に示す主脚７の略蒲鉾型の凸部１３において、凸部１３の幅方向両端部から凹溝１３ａ、１３ｂに至る側壁面１３ｃはアルミ成形品であるため外側に湾曲形成された凸曲面形状に形成されている。これにより、凸部１３に形成された嵌合穴１４に近接する凸曲面状の側壁面１３ｃの肉厚を確保することができる。 7, the side wall surfaces 13c extending from both ends of the protrusion 13 in the width direction to the grooves 13a and 13b are curved outward because they are aluminum molded products. It is formed in a convex curved shape. Thereby, the thickness of the convex curved side wall surface 13c close to the fitting hole 14 formed in the convex portion 13 can be ensured.

また、図４及び図８に示す断面略コの字状の凹部１８において、後ろ側の側壁部１８ｂより前側の側壁部１８ｃの方が厚く形成され、しかも底部１８ａの肉厚は後ろ側の側壁部１８ｂから前側の側壁部１８ｃに向けて次第に肉厚が増大するように形成されている。そのため、椅子５に着座した利用者の足が内側から補助脚８に当たる等すると、補助脚８を主脚７に対して外側に開く方向、即ち固定ボルト１６との連結を外す方向に荷重が働くことになる。
この場合、補助脚８の凹部１８は底部１８ａより肉厚の大きい部分、そして肉厚のより大きい前側の側壁部１８ｃ、そして嵌合穴１４に嵌合する２本のボス部１９でより大きな荷重を受けるため、固定ボルト１６にかかる負荷を低減できる。 4 and 8, the side wall portion 18c on the front side is formed thicker than the side wall portion 18b on the rear side, and the thickness of the bottom portion 18a is the same as that of the side wall on the rear side. It is formed such that the thickness gradually increases from the portion 18b toward the front side wall portion 18c. Therefore, when the legs of a user sitting on the chair 5 hit the auxiliary leg 8 from the inside, a load acts in the direction of opening the auxiliary leg 8 outward with respect to the main leg 7, that is, in the direction of disconnecting the fixing bolt 16. It will be.
In this case, the concave portion 18 of the auxiliary leg 8 has a thicker portion than the bottom portion 18a, the thicker front side wall portion 18c, and the two boss portions 19 fitted in the fitting hole 14, thereby increasing the load. Therefore, the load applied to the fixing bolt 16 can be reduced.

本実施形態による天板付き什器１は上述の構成を有しており、次にその使用方法を説明する。
図１に示す天板付き什器１は使用時や使用終了時等に移動させることが多い。天板付き什器１の移動時等において、天板３から主脚７に係る荷重やキャスター９が設置面の段差に乗りあげたり段差から落下する際の衝撃がかかったとしても、主脚７は設置面に対して垂直に近い角度に設置されているためその荷重や衝撃を受け止めることができる。しかも、主脚７は衝撃や荷重に強い。
また、図２において、補助脚８のキャスター１０が設置面の段差に乗りあげたり段差から落下する際の衝撃がかかった場合、キャスター１０の上下方向の荷重や衝撃は接続部１１における補助脚８の略コの字状の凹部１８の回転力Ｆ１に変換される。 The fixture 1 with a top plate according to this embodiment has the above-described configuration, and the method for using it will now be described.
The fixture 1 with a top plate shown in FIG. 1 is often moved during use or when use is finished. When the furniture 1 with a top plate is moved, even if a load applied to the main leg 7 from the top plate 3 or an impact when the caster 9 rides on the step of the installation surface or falls from the step, the main leg 7 Since it is installed at an angle close to perpendicular to the installation surface, it can receive the load and impact. Moreover, the main landing gear 7 is strong against impacts and loads.
Also, in FIG. 2, when the caster 10 of the auxiliary leg 8 is subjected to an impact when it rides on or falls from a step on the installation surface, the vertical load or impact of the caster 10 is applied to the auxiliary leg 8 at the connection portion 11. is converted into a rotational force F1 of the substantially U-shaped concave portion 18.

この場合、補助脚８の凹部１８の回転力Ｆ１は、幅方向両側の側壁部１８ｂ、１８ｃが凸部１３の両側の凹溝１３ａ、１３ｂに係合しているため、凸曲面状の両側の側壁面１３ｃを圧接して受け止められる。前側の側壁部１８ｃは比較的肉厚が大きいため強度が高く、回転方向の荷重や衝撃から生じる回転力Ｆ１を凸部１３の側壁面１３ｃとの間で受け止める。また、凸部１３と凹部１８の底部１８ａが互いに傾斜面であるため、凸部１３と底部１８ａによっても摩擦によって回転力Ｆ１の荷重を抑制できる。
しかも、補助脚８の凹部１８から上下方向に突出する２個のボス部１９が主脚７の凸部１３に形成された嵌合穴１４に嵌合しているため、嵌合穴１４によってもボス部１９の回転を受け止める。そのため、固定ボルト１６にねじりやせん断の負荷や荷重がかかることを抑制できて、接続部１１の強度と耐久性を高めることができる。 In this case, since the side walls 18b and 18c on both sides in the width direction are engaged with the grooves 13a and 13b on both sides of the convex portion 13, the rotational force F1 of the concave portion 18 of the auxiliary leg 8 is applied to both sides of the convex curved surface. It is received by pressing the side wall surface 13c. The side wall portion 18c on the front side has a relatively large thickness, and thus has high strength. Further, since the convex portion 13 and the bottom portion 18a of the concave portion 18 are mutually inclined surfaces, the load of the rotational force F1 can be suppressed by the friction between the convex portion 13 and the bottom portion 18a.
Moreover, since the two bosses 19 protruding vertically from the concave portion 18 of the auxiliary leg 8 are fitted in the fitting holes 14 formed in the convex portion 13 of the main leg 7, The rotation of the boss portion 19 is received. Therefore, it is possible to suppress the application of a torsional or shearing load or a load to the fixing bolt 16 , thereby increasing the strength and durability of the connecting portion 11 .

また、図１において、椅子５に着座する利用者の足が補助脚８にあたる等すると、補助脚８は接続部１１に対して内側から外側に回転する荷重が水平方向の回転力Ｆ２として付与される。この場合でも、補助脚８に設けた断面略コの字状の凹部１８における側壁部１８ｂ、１８ｃの荷重が主脚７の凸部１３及び凹溝１３ａ、１３ｂに押圧されて受け止められる。
しかも、この回転力Ｆ２は補助脚８の凹部１８に形成したボス部１９が凸部１３の嵌合穴１４内で受け止められ、特にボス部１９の先端面が嵌合穴１４内の底面を押圧することによっても受け止められる。また、互いに傾斜する凸部１３と底部１８ａによっても摩擦によって回転力Ｆ２の荷重を低減できる。そのため、この場合も、固定ボルト１６に引張り力や曲げ応力がかかることを抑制できて、接続部１１の強度と耐久性を高めることができる。 Further, in FIG. 1, when the foot of the user sitting on the chair 5 hits the auxiliary leg 8, the auxiliary leg 8 receives a load rotating from the inside to the outside with respect to the connecting portion 11 as a horizontal rotational force F2. be. Even in this case, the load of the side walls 18b and 18c of the concave portion 18 having a substantially U-shaped cross section provided in the auxiliary leg 8 is pressed by the convex portion 13 and the concave grooves 13a and 13b of the main leg 7 and received.
Moreover, this rotational force F2 is received by the boss portion 19 formed in the concave portion 18 of the auxiliary leg 8 in the fitting hole 14 of the convex portion 13, and particularly the tip surface of the boss portion 19 presses the bottom surface in the fitting hole 14. It can also be accepted by doing Moreover, the load of the rotational force F2 can be reduced by the friction caused by the convex portion 13 and the bottom portion 18a which are inclined to each other. Therefore, in this case as well, application of tensile force and bending stress to the fixing bolt 16 can be suppressed, and the strength and durability of the connecting portion 11 can be enhanced.

上述のように本実施形態による天板付き什器１によれば、主脚７の接続部１１に補助脚８から上下方向の回転力Ｆ１や水平方向の回転力Ｆ２がかかったとしても、主脚７の凸部１３及び補助脚８の略コの字状の凹部１８によって、更に嵌合穴１４及びボス部１９によっても荷重を受け止めることができる。そのため、固定ボルト１６に荷重がかかることを抑制することができて接続部１１の強度と耐久力が高い。 As described above, according to the fixture 1 with a top plate according to the present embodiment, even if the connection portion 11 of the main leg 7 is subjected to a vertical rotational force F1 or a horizontal rotational force F2 from the auxiliary leg 8, the main leg The load can be received by the convex portion 13 of 7 and the substantially U-shaped concave portion 18 of the auxiliary leg 8 as well as by the fitting hole 14 and the boss portion 19 . Therefore, it is possible to suppress the load from being applied to the fixing bolt 16, and the strength and durability of the connection portion 11 are high.

なお、本発明は上述の実施形態による天板付き什器１に限定されることはなく、本発明の要旨を逸脱しない範囲で適宜の変更や置換等が可能であり、これらはいずれも本発明に含まれる。以下に、本発明の変形例等について説明するが、上述した実施形態と同一または同様な部品や部材等には同一の符号を用いて説明を行う。 In addition, the present invention is not limited to the furniture with a top board 1 according to the above-described embodiment, and appropriate modifications and replacements are possible without departing from the gist of the present invention. included. Modifications and the like of the present invention will be described below, and description will be made using the same reference numerals for parts and members that are the same as or similar to those of the above-described embodiment.

上述した実施形態では、主脚７の略蒲鉾状の凸部１３及び凹溝１３ａと補助脚８の略コの字状の凹部１８を係合させると共に、凸部１３に形成した嵌合穴１４に凹部１８に形成したボス部１９を嵌合させる構成を採用した。しかし、本実施形態の変形例では、必ずしもボス部１９は設けなくてもよい。この場合でも、主脚７の略蒲鉾状の凸部１３及び凹溝１３ａと補助脚８の略コの字状の凹部１８を係合させることで、補助脚８にかかる上下方向の荷重や水平方向の荷重を受け止めて固定ボルト１６にかかる荷重を抑制することができる。 In the above-described embodiment, the substantially U-shaped convex portion 13 and concave groove 13a of the main leg 7 are engaged with the substantially U-shaped concave portion 18 of the auxiliary leg 8, and the fitting hole 14 formed in the convex portion 13 A configuration in which the boss portion 19 formed in the concave portion 18 is fitted is adopted. However, in the modified example of this embodiment, the boss portion 19 does not necessarily have to be provided. Even in this case, by engaging the substantially U-shaped convex portion 13 and concave groove 13a of the main leg 7 with the substantially U-shaped concave portion 18 of the auxiliary leg 8, the vertical load applied to the auxiliary leg 8 and the horizontal load can be reduced. The load applied to the fixing bolt 16 can be suppressed by receiving the load in the direction.

なお、上述の説明において、主脚７は第１脚部材に含まれ、補助脚８は第２脚部材に含まれる。
また、上述した実施形態では天板付き什器１について説明したが、本発明は机に限定されることなく、椅子５等にも適用できる。これら机や椅子等は天板付き什器に含まれ、更に什器の荷重支持構造体に含まれる。 In the above description, the main leg 7 is included in the first leg member, and the auxiliary leg 8 is included in the second leg member.
Moreover, although the furniture 1 with a top plate has been described in the above-described embodiment, the present invention is not limited to a desk and can be applied to a chair 5 or the like. These desks, chairs, and the like are included in the furniture with a top plate, and are also included in the load-bearing structure of the furniture.

１天板付き什器
２脚部
３天板
７主脚
８補助脚
８ａ第１アーム部
８ｂ第２アーム部
１１接続部
１３凸部
１３ａ、１３ｂ凹溝
１３ｃ側壁面
１４嵌合穴
１６固定ボルト
１７挿通穴
１８凹部
１８ａ底部
１８ｂ、１８ｃ側壁部
１９ボス部
１９ａボルト穴 1 Furniture with top plate 2 Leg portion 3 Top plate 7 Main leg 8 Auxiliary leg 8a First arm portion 8b Second arm portion 11 Connection portion 13 Convex portions 13a, 13b Groove 13c Side wall surface 14 Fitting hole 16 Fixing bolt 17 Insertion hole 18 recess 18a bottom 18b, 18c side wall 19 boss 19a bolt hole

Claims

A fixture comprising a first leg member standing vertically with respect to an installation surface, and a second leg member standing at a predetermined angle with respect to the installation surface and connected to the first leg member by a connecting portion. A load bearing structure,
In the connection portion, the first leg member includes a pair of concave grooves formed on both sides of the furniture in the depth direction, and a convex portion protruding between the concave grooves and formed with a fitting hole,
The second leg member includes a concave portion having a substantially U-shaped cross section and having a bolt hole formed thereon to engage with the concave groove and the convex portion,
A load support structure for furniture, wherein the first leg member and the second leg member are connected by tightening a fixing bolt into the bolt hole through the fitting hole.

2. The load support structure for fixtures according to claim 1, wherein the recess is formed with a boss portion that fits into the fitting hole of the projection portion, and the boss portion is formed with the bolt hole.

3. A load support structure for furniture according to claim 1 or 2, wherein an end portion of said convex portion reaching said concave groove is formed in a convex curved shape.

4. The second leg member according to claim 1, wherein the first arm portion having the concave portion and the second arm portion extending from the lower end portion in the longitudinal direction of the first arm portion are formed in a substantially L shape. A load bearing structure for furniture according to any one of the preceding claims.

5. Any one of claims 1 to 4, wherein the bottom portion of the second leg member forming the recess and the side wall portions on both sides thereof are formed to be thicker on the other end side than on the one end side in the depth direction of the furniture. The load-bearing structure of the fixtures described in .