JP2004350923A

JP2004350923A - Attachment structure of arm material to support

Info

Publication number: JP2004350923A
Application number: JP2003152304A
Authority: JP
Inventors: Kazuhisa Akiba; 一久秋葉; Kenji Nakamura; 健治中村
Original assignee: Okamura Corp
Current assignee: Okamura Corp
Priority date: 2003-05-29
Filing date: 2003-05-29
Publication date: 2004-12-16
Anticipated expiration: 2023-05-29
Also published as: JP4383775B2

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate attachment/detachment work of an arm material to a support and firmly connect the arm member to the support. <P>SOLUTION: The arm material 4 is so attached to the support that the support 2 is provided with a groove 10 extending axially and lock pieces 11 and 11 facing mutually inward from the opening edge part of the groove; a joint member 6 having a base part 62 fitted in the groove 10 and an extension part 61 extending outward from the opening part of the groove is slidably fitted in the groove 10; a bolt 12 is passed through the joint member 6 and fastened. This arm material 4 is provided with an engagement projection 17 in its attachment side end part; a slope face 61a obliquely formed at a same inclination with that of a screw hole 63 threadedly engaged with a bolt 12 is engaged with the engagement projection 17 in the extension part 61 of the joint member 6, and when the bolt 12 is fastened, the slope face clamps engagement projection 17 and the lock piece 11 of the support between itself and the base part 62 of the joint member, and the arm material 4 is attached to the support 2 via the joint member 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、支柱へのアーム材の取付構造に関する。
【０００２】
【従来の技術】
事務機器その他の小型の構造物において、支柱に対して、天板または棚板の支持や支持脚等の役割を果たすアーム材を取り付ける構造としては、従来、アーム材と支柱に、ボルト挿通孔とねじ孔を設けておき、取付ねじを、アーム材を貫通させて、支柱に止めるものや、支柱の軸方向に連続的に係合孔を設けておき、この係合孔にアーム材の端部に設けた係合片を係合させるものが知られている（例えば特許文献１，２および３参照）。
【０００３】
また最近では、次のような取付構造も見られる。すなわち、まず支柱の軸方向に沿って、溝ならびに、この溝の開口部の両側からこの開口部を狭めるように突出する係止片を設け、この溝の中に、摺動可能に、アーム材を支柱に留めるボルトを受けるための受け部材を収める。そして、アーム材には、支柱へ取付けるためのジョイントを装着し、ジョイントに設けたボルト挿通孔を通して、ボルトを受け部材に止めることにより、受け部材とジョイントで支柱の係止片を挟みつけ、アーム材を支柱に取り付けるものも見られる。（例えば特許文献４および５参照）。
【０００４】
【特許文献１】
特開２００１−８７４８号公報
【特許文献２】
特開平６−１８１８１９号公報
【特許文献３】
特開平１０−１２７３７０号公報
【特許文献４】
特開２００２−１３８６９３号公報
【特許文献５】
特開２００２−１３９００７号公報
【０００５】
【発明が解決しようとする課題】
しかし、上述の特許文献１〜３に記載された取付構造では、支柱が押出し材である場合、タップ加工や切欠き加工等の２次加工の必要があり、加工の工数が増加して、製造コストが上昇するという難点がある。
【０００６】
また、上述の特許文献４または５に記載された取付構造でも、支柱とアーム材を強固に連結するには、少なくとも２本以上のボルトを使用しなければならず、取付け・取外しに時間がかかる。
【０００７】
本発明は、上記事情に鑑みてなされたもので、支柱の加工工数を極力抑えるとともに、取付け・取外しが容易で、かつ強固にアーム材を支柱に取付けることができるようにした支柱へのアーム材の取付構造を提供することを目的とする。
【０００８】
【課題を解決するための手段】
本発明によれば、上記課題は次のようにして解決される。
（１）支柱から横方向に延びるアーム材の取付構造において、前記支柱には、軸方向に延びる溝、およびこの溝の開口部の両側からこの開口部を狭めるように突出する係止片を設け、前記溝には、この溝内に嵌合する基部と、この溝の開口部から外側に延出する延出部とを有するジョイント部材を、摺動可能に嵌合させ、前記アーム材の支柱への取付側端部と前記ジョイント部材とには、前記アーム材の支柱への取付側端部からジョイント部材に向けて斜めに一直線状に延びるボルト挿通孔とねじ孔とを設けるとともに、前記ジョイント部材の延出部の下面と、それに対向する前記アーム材の支柱への取付側端部の上面との少なくともいずれか一方に、前記ねじ孔と同一の傾斜角で傾斜する傾斜面を設け、前記ねじ孔にボルトを螺合することにより、前記支柱の係止片を、前記ジョイント部材の基部と前記アーム材の取付側端部との間で挟みつけ、かつ前記ジョイント部材の延出部の下面と前記アーム材の支柱への取付側端部の上面とを、前記傾斜面を介して密接させて、前記アーム材を、前記ジョイント部材を介して、支柱へ取り付けるようにする。
【０００９】
（２）上記（１）項において、アーム材の支柱への取付側端部からジョイント部材に向けて斜めに延びるボルト挿通孔は、アーム材の支柱への取付側端部およびジョイント部材の下端側において、アーム材の下面から斜め４５°上方に向けて延びるように設ける。
【００１０】
（３）上記（１）または（２）において、アーム材の支柱への取付側端部に、前記ジョイント部材の延出部が嵌合する凹部を設ける。
【００１１】
（４）上記（１）〜（３）のいずれかにおいて、ジョイント部材に、前記基部と前記延出部を連絡するリブを設ける。
【００１２】
【発明の実施の形態】
以下に、本発明の実施の形態を添付の図面を参照して説明する。
図１は、本発明の一実施形態に係る、ワークステーション等に使用される支持ユニット（１）の斜視図であり、支柱（２）には、棚板（３）を支持するための支持アーム（４）および支持脚（５）が、図示しないジョイント部材を介して取付けられている。支柱に取付け、また取外される支持アーム（４）および支持脚（５）は、支柱（２）に沿って上下に位置を調節することができる。
【００１３】
なお、支持ユニット（１）は、本発明には直接関係しないため、図示のみに止めて、詳細な説明は省略する。
【００１４】
図２は、支持アーム（４）および支柱（２）の一部の側面図である。図３は、支持アーム（４）、支柱（２）およびジョイント部材（６）の平面図である。また、図４は、図３のＩＶ−ＩＶ線に沿った断面図であり、図５は、支持アーム（４）および支柱（２）の一部の正面図である。
【００１５】
図３に示すように、支柱（２）は、アルミニウム等の金属材料を押出し加工して、軸方向に４本の溝（１０）をもつ断面形状となるように形成されている。溝（１０）は、支持アーム（４）が連結される側のもののみに符号を付し、それ以外の溝については、符号を省略してある。
【００１６】
溝（１０）の開口部には、開口部の両側から開口部を狭めるように、１対の係止片（１１）が突出している。係止片（１１）は、ジョイント部材（６）と支持アーム（４）によって水平方向において挟みつけられ、この機構によって、支持アーム（４）は所望の位置で支柱（２）に連結される。支持アーム（４）の支柱（２）への連結は、図２に示すように、ボルト（１２）を支持アーム（４）の支柱側端部の下面から差し込んでジョイント部材（６）に止めることによって行う。
【００１７】
図２〜図５に示すように、支持アーム（４）は、上面は棚板（３）を載置するため平坦となっており、他方下面の支柱側端部においては、ボルト（１２）を差し込むためのボルト挿通孔（１５）が、下面から斜め４５°上方に向けて支柱側に貫通している。また、支持アーム（４）における上面の支柱側端部の中央には、ジョイント部材（６）の延出部（６１）を受け入れるための凹部（１６）が形成されており、さらにこの凹部（１６）の底面には、上面が支柱（２）側に向けてボルト挿通孔（１５）と同じ方向に上向き傾斜（斜め４５°）する係合突起（１７）が、凹部（１６）の底面の左右両側（図５参照）に２個並んで形成されている。
【００１８】
図６は、ジョイント部材（６）の正面図、図７は、ジョイント部材（６）の側面図、図８は、ジョイント部材（６）の底面図、そして図９は、図６のＩＸ−ＩＸ線に沿った断面図である。
【００１９】
ジョイント部材（６）は、支柱（２）の溝（１０）の中に収まる基部（６２）と、すでに述べたように、支柱（２）の開口部から外に出て、支持アーム（４）の凹部に嵌合する延出部（６１）とからなっている。基部（６２）には、支柱（２）の溝（１０）の左右両側に向けて張り出す突出部（６２ａ）があり、この突出部（６２ａ）が支柱（２）の係止片（１１）に当接し、支持アーム（４）の支柱側端部とともに係止片（１１）を挟みつける。
【００２０】
ジョイント部材（６）の下端部には、支持アーム（４）の固定位置において、すでに述べた支持アーム（４）のボルト挿通孔（１５）と連通するねじ孔（６３）が設けられている。ジョイント部材（６）のねじ孔（６３）も、支持アーム（４）のボルト挿通孔（１５）と同じ斜め４５°の傾斜を有することはもちろんである。ジョイント部材（６）のねじ孔（６３）は、延出部（６１）を支持アーム（４）の凹部（１６）に嵌合させたときに、支持アーム（４）のボルト挿通孔（１５）と連通する位置に設けられる。
【００２１】
他方、ジョイント部材（６）の延出部（６１）は、下端面が先端側の下端から基部（６２）に向けて斜め上方に延びる傾斜面（６１ａ）となっている。この傾斜面は、すでに述べた支持アームの係合突起（１７）の上面と同じ傾斜角（４５°）を有し、ボルト（１２）を締結したときに、係合突起（１７）と係合し（図４参照）、支持アーム（４）の上端側が支柱（２）から離れるのを防止する。なお、この延出部（６１）は、基部（６２）との境界が細くなっているため、基部（６２）との連絡の強度を増すために境界の中央部にリブ（６４）を設けてある。
【００２２】
支持アーム（４）を支柱（２）に取付ける際には、まず、支柱（２）の溝（１０）にジョイント部材（６）の基部を嵌合させて適当な位置まで摺動させ、この位置で、延出部（６１）を支持アーム（４）の凹部（１６）に嵌合させて両者の位置合わせをする。
【００２３】
ついで、支持アーム（４）のボルト挿通孔（１５）にボルト（１２）を差し込み、ジョイント部材（６）のねじ孔（６３）に螺合する。すると、このときに、延出部（６１）の傾斜面（６１ａ）が支持アームの係合突起（１７）と摺動して、係合位置まで進む。ついでボルト（１２）を締結すると、支持アーム（４）とジョイント部材（６）の下端側では、このボルト（１２）の締付けにより、ジョイント部材（６）における基部（６２）の突起部（６２ａ）と、支持アーム（４）の支柱側端部が支柱（２）の係止片（１１）を挟みつける。
【００２４】
また支持アーム（４）とジョイント部材（６）の上端側でも、同様にして係止片（１１）が挟みつけられるとともに、ジョイント部材（６）における延出部（６１）の傾斜面（６１ａ）と支持アーム（４）の係合突起（１７）が係合して、支持アーム（４）が支柱（２）から離れるのを防止する。
【００２５】
したがって、本発明によれば、ボルトを１本止め、また外すだけで、支持アーム（４）の支柱（２）への取付け、上げ下げの位置調節、および取外しを行うことができ、しかもこの取付けは、強固なものとすることができる。
【００２６】
図１０は、支持脚（５）が支柱（２）に取付けられた状態を示す側面図であり、図１１は、図１０の要部拡大図である。
【００２７】
ジョイント部材（６）は、支持アーム（４）の取付けに用いたものと同形であり、同じ機構によって、支持脚（５）の取付け、上げ下げの位置調節および取外しを容易に行うことができる。また、本発明によれば、アーム材の種類に関わりなく、同一のジョイント部材を用いることができるため、部品点数を抑えて総合的な製造コストを抑制することができる。
【００２８】
なお、上述の例では、ジョイント部材（６）の延出部（６１）の下面と、それに対向する支持アーム（４）の支柱側端部における係合突起（１７）の上面とを、ともに斜め上方に延びる傾斜面（６１ａ）としたが、それらのいずれか一方のみ傾斜面として、他方はそれに摺接する円弧面又は角部としてもよい。
【００２９】
【発明の効果】
本発明によれば、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、支柱が押出し材である場合でも、タップ加工や切欠き加工等の２次加工の必要がなく、製造コストを抑えることができる。
また、ボルトを１本締結すれば、このボルトの締結箇所と第１および第２の係合突起の係合箇所の２箇所で、ジョイント部材とアーム材が支柱の係止片を挟みつけるため、アーム材の強固な取付けを簡単に行うことができる。したがって、アーム材の取付け・取外し作業を容易に行うことができる。
さらに、アーム材が天板や棚板の支持のためのものであれ、支持脚の役割を果たすものであれ、ジョイント部材は共通のものを使用できるため、部品点数を減らして製造コストの削減を図ることができる。
【００３０】
（ｂ）請求項２記載の発明によると、ボルトは、アーム材の支柱への取付側端部およびジョイント部材の下端側において、下からほぼ斜め４５°上方に向けて取り付けられるため、ボルトの取付けが容易であるとともに、アーム材がずり下がるのを効率的に抑えることができる。
【００３１】
（ｃ）請求項３記載の発明によると、ジョイント部材の延出部をアーム材の凹部に嵌合させることにより、ジョイント部材とアーム材の位置合わせを容易に行うことができ、アーム材取付け作業の作業性を向上することができる。
【００３２】
（ｄ）請求項４記載の発明によると、ジョイント部材の強度を増すことができ、ジョイント部材における延出部の傾斜面と、アーム材の係合突起の係合をより確実なものにすることができる。
【図面の簡単な説明】
【図１】本発明の一実施形態に係る支持ユニットの斜視図である。
【図２】同じく、要部の側面図である。
【図３】同じく、要部の正面図であるである。
【図４】図３におけるＩＶ−ＩＶ線に沿う断面図である。
【図５】支持アームの正面図である。
【図６】ジョイント部材の正面図である。
【図７】ジョイント部材の側面図である。
【図８】ジョイント部材の底面図である。
【図９】図６のＩＸ−ＩＸ線に沿う断面図である。
【図１０】支持脚の取付け状態を示す側面図である。
【図１１】図１０の要部拡大図である。
【符号の説明】
（１）支持ユニット
（２）支柱
（４）支持アーム
（５）支持脚
（６）ジョイント部材
（１０）溝
（１１）係止片
（１２）固定ボルト
（１５）ボルト挿通孔
（１６）凹部
（１７）係合突起
（６１）延出部
（６２）基部
（６３）ねじ孔
（６４）リブ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a structure for attaching an arm member to a column.
[0002]
[Prior art]
In office equipment and other small structures, as a structure for attaching an arm material that plays a role of supporting a top plate or a shelf plate or supporting legs to a support column, conventionally, a bolt insertion hole is provided in the arm material and the support column. A screw hole is provided, and a mounting screw is passed through the arm material and fixed to the support, or an engagement hole is provided continuously in the axial direction of the support, and the end of the arm material is provided in the engagement hole. (See, for example, Patent Documents 1, 2, and 3).
[0003]
In recent years, the following mounting structures have also been observed. That is, first, along the axial direction of the column, a groove and a locking piece projecting from both sides of the opening of the groove so as to narrow the opening are provided, and the arm member is slidably inserted into the groove. The receiving member for receiving the bolt for fixing the to the support is received. And the arm material is equipped with a joint for attachment to the support, and the bolt is fixed to the receiving member through the bolt insertion hole provided in the joint, so that the locking piece of the support is sandwiched between the receiving member and the joint, and the arm Some materials are attached to the columns. (See, for example, Patent Documents 4 and 5).
[0004]
[Patent Document 1]
JP 2001-8748 A [Patent Document 2]
JP-A-6-181819 [Patent Document 3]
JP-A-10-127370 [Patent Document 4]
JP-A-2002-138693 [Patent Document 5]
JP, 2002-139007, A
[Problems to be solved by the invention]
However, in the mounting structures described in Patent Documents 1 to 3 described above, when the support pillar is an extruded material, it is necessary to perform secondary processing such as tapping or notch processing, which increases the number of processing steps and increases the manufacturing cost. There is a disadvantage that the cost increases.
[0006]
Further, even with the mounting structure described in Patent Document 4 or 5, at least two or more bolts must be used to firmly connect the column and the arm member, and it takes time to mount and remove. .
[0007]
The present invention has been made in view of the above circumstances, and minimizes the number of processing steps of a support column, and facilitates mounting and dismounting, and allows the arm member to be securely attached to the support column. It is an object of the present invention to provide a mounting structure.
[0008]
[Means for Solving the Problems]
According to the present invention, the above-mentioned problem is solved as follows.
(1) In the mounting structure of the arm member extending laterally from the support, the support is provided with a groove extending in the axial direction, and a locking piece projecting from both sides of the opening of the groove so as to narrow the opening. A joint member having a base fitted into the groove and an extension extending outward from the opening of the groove is slidably fitted in the groove, and the column of the arm material is slidably fitted. The joint member is provided with a bolt insertion hole and a screw hole that extend obliquely and linearly from the end of the arm member to the support column toward the joint member. At least one of the lower surface of the extending portion of the member and the upper surface of the end of the arm member attached to the column facing the arm member is provided with an inclined surface inclined at the same inclination angle as the screw hole, Screwing the bolt into the screw hole Thus, the locking piece of the column is sandwiched between the base of the joint member and the mounting-side end of the arm member, and the lower surface of the extending portion of the joint member and the mounting of the arm member to the column. The upper surface of the side end is brought into close contact with the upper surface via the inclined surface, and the arm member is attached to the support via the joint member.
[0009]
(2) In the above item (1), the bolt insertion hole which extends obliquely from the end of the arm member to the support column toward the joint member is the end of the arm member to the support column and the lower end side of the joint member. , It is provided so as to extend obliquely upward by 45 ° from the lower surface of the arm member.
[0010]
(3) In the above (1) or (2), a concave portion is provided at an end of the arm member on the side of attachment to the column, in which the extending portion of the joint member is fitted.
[0011]
(4) In any one of the above (1) to (3), the joint member is provided with a rib for connecting the base portion and the extension portion.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view of a support unit (1) used for a work station or the like according to an embodiment of the present invention, and a support (2) has a support arm for supporting a shelf (3). (4) and the support leg (5) are attached via a joint member (not shown). The support arm (4) and the support legs (5) that are attached to and detached from the column can be adjusted up and down along the column (2).
[0013]
In addition, since the support unit (1) is not directly related to the present invention, the support unit (1) is illustrated only, and the detailed description is omitted.
[0014]
FIG. 2 is a side view of a part of the support arm (4) and the column (2). FIG. 3 is a plan view of the support arm (4), the column (2), and the joint member (6). FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 3, and FIG. 5 is a front view of a part of the support arm (4) and the column (2).
[0015]
As shown in FIG. 3, the column (2) is formed by extruding a metal material such as aluminum so as to have a cross-sectional shape having four grooves (10) in the axial direction. In the groove (10), reference numerals are given only to those on the side to which the support arm (4) is connected, and reference numerals are omitted for other grooves.
[0016]
A pair of locking pieces (11) project from the opening of the groove (10) so as to narrow the opening from both sides of the opening. The locking piece (11) is horizontally sandwiched between the joint member (6) and the support arm (4), and the support arm (4) is connected to the support (2) at a desired position by this mechanism. As shown in FIG. 2, the connection of the support arm (4) to the support (2) is performed by inserting a bolt (12) from the lower surface of the support-side end of the support arm (4) and stopping on the joint member (6). Done by
[0017]
As shown in FIGS. 2 to 5, the support arm (4) has an upper surface which is flat for mounting the shelf plate (3), and a bolt (12) at the column-side end of the lower surface. A bolt insertion hole (15) for insertion penetrates the support column side obliquely upward by 45 ° from the lower surface. A recess (16) for receiving the extension (61) of the joint member (6) is formed in the center of the support arm (4) at the end of the upper surface on the side of the support. On the bottom surface of the recess (16), an engagement protrusion (17) whose upper surface is inclined upward (obliquely at 45 °) in the same direction as the bolt insertion hole (15) toward the column (2) side, Two are formed side by side (see FIG. 5).
[0018]
Fig. 6 is a front view of the joint member (6), Fig. 7 is a side view of the joint member (6), Fig. 8 is a bottom view of the joint member (6), and Fig. 9 is IX-IX of Fig. 6. It is sectional drawing along the line.
[0019]
The joint member (6) has a base (62) that fits into the groove (10) of the strut (2) and, as already mentioned, emerges from the opening of the strut (2) to form a support arm (4). And an extended portion (61) fitted into the concave portion. The base (62) has a projection (62a) projecting toward both left and right sides of the groove (10) of the column (2), and the projection (62a) is engaged with the locking piece (11) of the column (2). And the retaining piece (11) is sandwiched between the support arm (4) and the end of the support arm (4) on the side of the column.
[0020]
At the lower end of the joint member (6), a screw hole (63) communicating with the bolt insertion hole (15) of the support arm (4) is provided at a position where the support arm (4) is fixed. Needless to say, the screw hole (63) of the joint member (6) also has the same inclination of 45 ° as the bolt insertion hole (15) of the support arm (4). The screw hole (63) of the joint member (6) is provided with the bolt insertion hole (15) of the support arm (4) when the extension (61) is fitted into the recess (16) of the support arm (4). Provided at a position communicating with the
[0021]
On the other hand, the extending portion (61) of the joint member (6) has an inclined surface (61a) whose lower end surface extends obliquely upward from the lower end on the distal end side toward the base portion (62). This inclined surface has the same inclination angle (45 °) as the upper surface of the engaging projection (17) of the support arm, and engages with the engaging projection (17) when the bolt (12) is fastened. (See FIG. 4) to prevent the upper end of the support arm (4) from separating from the support (2). Since the extension (61) has a narrower boundary with the base (62), a rib (64) is provided at the center of the boundary to increase the strength of communication with the base (62). is there.
[0022]
When attaching the support arm (4) to the column (2), first, the base of the joint member (6) is fitted into the groove (10) of the column (2) and slid to an appropriate position. Then, the extending portion (61) is fitted into the concave portion (16) of the support arm (4) to align the two.
[0023]
Next, the bolt (12) is inserted into the bolt insertion hole (15) of the support arm (4), and screwed into the screw hole (63) of the joint member (6). Then, at this time, the inclined surface (61a) of the extension portion (61) slides on the engagement protrusion (17) of the support arm, and advances to the engagement position. Next, when the bolt (12) is fastened, the lower end side of the support arm (4) and the joint member (6) is tightened by the bolt (12), so that the projection (62a) of the base (62) of the joint member (6). Then, the support-side end of the support arm (4) sandwiches the locking piece (11) of the support (2).
[0024]
Also on the upper end side of the support arm (4) and the joint member (6), the locking piece (11) is similarly sandwiched, and the inclined surface (61a) of the extension (61) in the joint member (6). And the engaging projection (17) of the support arm (4) engages to prevent the support arm (4) from separating from the support (2).
[0025]
Therefore, according to the present invention, it is possible to mount the support arm (4) on the column (2), adjust the position of raising and lowering, and remove it by simply fixing and removing one bolt. , Can be strong.
[0026]
FIG. 10 is a side view showing a state where the support leg (5) is attached to the column (2), and FIG. 11 is an enlarged view of a main part of FIG.
[0027]
The joint member (6) is of the same shape as that used for mounting the support arm (4), and the same mechanism can be used to easily mount, adjust the position of the support leg (5), and remove it. Further, according to the present invention, the same joint member can be used regardless of the type of the arm member, so that the number of parts can be suppressed and the overall manufacturing cost can be suppressed.
[0028]
In the above example, both the lower surface of the extending portion (61) of the joint member (6) and the upper surface of the engaging projection (17) at the end of the support arm (4) facing the support arm (4) are inclined. Although the inclined surface (61a) extends upward, only one of them may be an inclined surface, and the other may be an arc surface or a corner that slides on the inclined surface.
[0029]
【The invention's effect】
According to the present invention, the following effects can be obtained.
(A) According to the first aspect of the present invention, even when the support pillar is an extruded material, there is no need for secondary processing such as tapping or notching, and the manufacturing cost can be reduced.
Further, if one bolt is fastened, the joint member and the arm member sandwich the locking piece of the support post at two places, that is, the place where the bolt is fastened and the place where the first and second engagement protrusions engage. Strong attachment of the arm material can be easily performed. Therefore, the work of attaching and detaching the arm member can be easily performed.
Furthermore, whether the arm material is used to support the top plate or shelf board, or serves as a support leg, a common joint member can be used, reducing the number of parts and reducing manufacturing costs. Can be planned.
[0030]
(B) According to the second aspect of the present invention, the bolt is attached to the end of the arm member on the support column and the lower end of the joint member so as to be substantially obliquely 45 ° upward from below. And the arm material can be efficiently prevented from slipping down.
[0031]
(C) According to the third aspect of the present invention, by fitting the extending portion of the joint member into the concave portion of the arm member, the positioning of the joint member and the arm member can be easily performed, and the arm member mounting operation can be performed. Workability can be improved.
[0032]
(D) According to the invention as set forth in claim 4, the strength of the joint member can be increased, and the engagement between the inclined surface of the extending portion of the joint member and the engagement projection of the arm member can be made more reliable. Can be.
[Brief description of the drawings]
FIG. 1 is a perspective view of a support unit according to an embodiment of the present invention.
FIG. 2 is also a side view of a main part.
FIG. 3 is a front view of a main part, similarly.
FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;
FIG. 5 is a front view of a support arm.
FIG. 6 is a front view of a joint member.
FIG. 7 is a side view of the joint member.
FIG. 8 is a bottom view of the joint member.
FIG. 9 is a sectional view taken along line IX-IX in FIG. 6;
FIG. 10 is a side view showing a mounting state of a support leg.
FIG. 11 is an enlarged view of a main part of FIG. 10;
[Explanation of symbols]
(1) Support unit (2) Post (4) Support arm (5) Support leg (6) Joint member (10) Groove (11) Locking piece (12) Fixing bolt (15) Bolt insertion hole (16) Recess ( 17) engagement projection (61) extension (62) base (63) screw hole (64) rib

Claims

In a mounting structure for an arm member extending laterally from a support, the support includes a groove extending in an axial direction and locking pieces protruding from both sides of an opening of the groove so as to narrow the opening. A slidably fitted joint member having a base fitted into the groove and an extending portion extending outward from the opening of the groove, and attaching the arm member to a support column. A side end portion and the joint member are provided with a bolt insertion hole and a screw hole that extend obliquely and linearly from the end of the arm material to the support column toward the joint member, and extend the joint member. At least one of the lower surface of the protruding portion and the upper surface of the mounting side end of the arm member opposite to the protruding portion is provided with an inclined surface inclined at the same inclination angle as the screw hole. By screwing bolts The locking piece of the support is sandwiched between the base of the joint member and the mounting end of the arm member, and the lower surface of the extending portion of the joint member and the mounting end of the arm member on the support. An arm member attached to a support, wherein the upper surface of the arm is brought into close contact with the upper surface via the inclined surface, and the arm member is attached to the support via the joint member.

A bolt insertion hole that extends obliquely from the end of the arm member to the support column toward the joint member is provided at an angle of 45 degrees from the lower surface of the arm member at the end of the arm member to the support column and at the lower end of the joint member. The mounting structure of an arm member to a column according to claim 1, wherein the structure is provided so as to extend upward.

The mounting structure according to claim 1 or 2, wherein a concave portion is provided at an end of the arm member to be attached to the column, into which a protruding portion of the joint member is fitted.

The structure for attaching an arm member to a column according to any one of claims 1 to 3, wherein a rib for connecting the base portion and the extension portion is provided on the joint member.