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JP6940577B2 - Work pedestal - Google Patents
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JP6940577B2 - Work pedestal - Google Patents

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JP6940577B2
JP6940577B2 JP2019201381A JP2019201381A JP6940577B2 JP 6940577 B2 JP6940577 B2 JP 6940577B2 JP 2019201381 A JP2019201381 A JP 2019201381A JP 2019201381 A JP2019201381 A JP 2019201381A JP 6940577 B2 JP6940577 B2 JP 6940577B2
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leg
leg portion
legs
shaft
connecting arm
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JP2021074803A (en
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守 市橋
守 市橋
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Description

本発明は、作業用台座に関する。 The present invention relates to a working pedestal.

従来、中央部分にスリットが形成された２枚の平板を、それぞれのスリットに他方の平板が嵌るように組み合わせて、平面視において２枚の平板を直交させた台座が利用されている（例えば、特許文献１）。 Conventionally, a pedestal in which two flat plates having a slit formed in a central portion are combined so that the other flat plate fits into each slit and the two flat plates are orthogonal to each other in a plan view is used (for example, Patent Document 1).

このような台座は、２枚の板で形成されるため、不使用時に重ねて収納することができ、小さなスペースに収納可能である。 Since such a pedestal is formed of two plates, it can be stacked and stored when not in use, and can be stored in a small space.

特開２０１４−７６１０９号公報Japanese Unexamined Patent Publication No. 2014-76109

この手の台座では、一方の平板を支持した状態で他方の平板を嵌めることで組み合わせられる。このとき、台座の大きさ、構成する平板の重量等によっては、組み合わせの作業が困難になる場合がある。また、２枚の平板が異なる形状である場合、誤って同じ形状の平板を２枚用意してしまうと、台座としての使用が不可能になる。 In this type of pedestal, one flat plate is supported and the other flat plate is fitted to be combined. At this time, the combination work may be difficult depending on the size of the pedestal, the weight of the flat plate to be formed, and the like. Further, when two flat plates have different shapes, if two flat plates having the same shape are prepared by mistake, it cannot be used as a pedestal.

そこで本発明は、小さく折りたたむことが可能であり、運搬、収納および設置が容易な作業用台座を提供することを目的とする。 Therefore, an object of the present invention is to provide a work pedestal that can be folded into a small size and is easy to carry, store, and install.

上記目的を達成するため本発明にかかる作業用台座は、少なくとも３個の脚部と、上下に延びる中心軸を中心とする円柱状のシャフトと、を有し、前記脚部は、前記シャフトを中心に中心軸を基準とする周方向に移動可能であり、前記中心軸を基準とする周方向が厚み方向になるように配される板状の本体部と、前記シャフトの径方向外側に回転可能に配置された１または複数の筒部材と、前記本体部と前記筒部材とを連結する連結アーム部と、を有し、周方向に隣り合う前記脚部同士が周方向に離れて配される展開状態と、複数の前記脚部が互いに周方向に接近して配された折りたたみ状態と、に状態変化可能であり、前記折りたたみ状態において、複数の前記脚部の前記本体部が厚み方向に配列される。 The work pedestal according to the present invention in order to achieve the above object has at least three legs and a columnar shaft centered on a central axis extending vertically, and the legs have the shaft. A plate-shaped main body that can move in the circumferential direction with respect to the central axis and is arranged so that the circumferential direction with respect to the central axis is the thickness direction, and the shaft rotates outward in the radial direction. It has one or more tubular members that can be arranged, and a connecting arm portion that connects the main body portion and the tubular member, and the legs that are adjacent to each other in the circumferential direction are arranged apart from each other in the circumferential direction. The state can be changed between the unfolded state and the folded state in which the plurality of the legs are arranged close to each other in the circumferential direction. In the folded state, the main body portions of the plurality of legs are arranged in the thickness direction. Be arranged.

このように構成することで、脚部はシャフト回りに回動可能である。そして、脚部をシャフト回りに回動させるといった簡単な操作にて、上部に物品を載置可能な展開状態と、運搬、収納部への収納等に有利な折りたたみ状態とに状態変化が可能である。そして、折りたたみ状態のとき、脚部が厚み方向に配列される構成であることで、折りたたみ状態における小型化が可能である。 With this configuration, the legs can rotate around the shaft. Then, by a simple operation such as rotating the legs around the shaft, it is possible to change the state between the unfolded state where the article can be placed on the upper part and the folded state which is advantageous for transportation and storage in the storage part. be. When the legs are in the folded state, the legs are arranged in the thickness direction, so that the size of the legs can be reduced in the folded state.

上記構成の作業用台座が前記折りたたみ状態において配列方向の両外側に配された２個の脚部は、前記連結アーム部と交互に配されるスリットを有し、前記展開状態のとき、前記２個の脚部のうちの一方の脚部の前記スリットには、他方の脚部の前記連結アーム部が収納されてもよい。このようにすることで、展開状態において脚部同士が組み合わせられるため強度を高めることが可能である。 The two legs of the work pedestal having the above configuration arranged on both outer sides in the arrangement direction in the folded state have slits arranged alternately with the connecting arm portion, and in the deployed state, the above 2 The connecting arm portion of the other leg portion may be housed in the slit of one leg portion of the legs. By doing so, it is possible to increase the strength because the legs are combined with each other in the deployed state.

上記構成の作業用台座が前記展開状態において各前記脚部の周方向に向く面と接触して前記脚部の周方向の移動を制限するストッパ部材をさらに備えてもよい。ストッパ部材を備えることで、展開状態を安定して維持可能である。これにより、物品を載置した状態で作業を行ったときに、脚部が使用者の意思に反して移動し、作業用台座が倒れる等の不具合を抑制できる。 A stopper member may be further provided in which the working pedestal having the above configuration comes into contact with the surface of each leg portion facing the circumferential direction in the deployed state to limit the movement of the leg portion in the circumferential direction. By providing a stopper member, the deployed state can be stably maintained. As a result, when the work is performed with the article placed on it, the legs move against the intention of the user, and it is possible to suppress problems such as the work pedestal falling over.

上記構成の作業用台座において、前記シャフトが前記中心軸に沿って移動可能であり、前記ストッパ部材が前記シャフトの上端に固定されており、前記シャフトは、複数の前記脚部が前記展開状態になったときに前記中心軸に沿って下方に移動してもよい。このように構成することで、使用者の脚部を固定するときのストッパ部材の操作および脚部の固定を解除するときのストッパ部材の操作が容易であり、使用者の利便性が高い。 In the work pedestal having the above configuration, the shaft is movable along the central axis, the stopper member is fixed to the upper end of the shaft, and the shaft has a plurality of legs in the deployed state. When it becomes, it may move downward along the central axis. With such a configuration, it is easy to operate the stopper member when fixing the leg portion of the user and to operate the stopper member when releasing the fixing of the leg portion, which is highly convenient for the user.

上記構成の作業用台座において、前記シャフトの下端に配置されて前記シャフトを前記中心軸方向の下方に付勢する付勢部材をさらに備えてもよい。このように構成することで、展開状態になったときにストッパ部材が脚部の移動を自動的に規制する。そのため、使用者の利便性が高い。また、折りたたみ時において、ストッパ部材を引き上げるだけでよいため、ストッパ部材の操作が容易である。 The work pedestal having the above configuration may further include an urging member arranged at the lower end of the shaft and urging the shaft downward in the central axis direction. With this configuration, the stopper member automatically regulates the movement of the legs when the legs are in the deployed state. Therefore, the convenience of the user is high. Further, since it is only necessary to pull up the stopper member at the time of folding, the operation of the stopper member is easy.

上記構成の作業用台座において、各前記脚部の前記筒部材の前記中心軸方向の長さの合計がすべての前記脚部で同じであってもよい。このように構成することで、シャフトと直交する方向の力を均等または略均等に分散できる。これにより、上部に載置した物品に対する作業を安全に行うことが可能である。 In the work pedestal having the above configuration, the total length of the tubular member of each of the legs in the central axis direction may be the same for all the legs. With this configuration, the force in the direction orthogonal to the shaft can be evenly or substantially evenly distributed. As a result, it is possible to safely work on the article placed on the upper part.

上記構成の作業用台座において、全ての前記筒部材の前記中心軸方向の長さが同じであり、異なる前記脚部の前記筒部材が、前記中心軸方向に隣り合ってもよい。 In the work pedestal having the above configuration, all the tubular members have the same length in the central axial direction, and the tubular members of different legs may be adjacent to each other in the central axial direction.

上記構成の作業用台座において、前記脚部はそれぞれ２個以上の同数の前記筒部材を備えており、各前記脚部の前記筒部材が順次所定の順番で繰り返して配列されてもよい。 In the work pedestal having the above configuration, the legs each include two or more of the same number of the tubular members, and the tubular members of the respective legs may be sequentially and repeatedly arranged in a predetermined order.

本発明の作業用台座によると、小さく折りたたむことが可能であるとともに運搬、収納および設置が容易である。 According to the work pedestal of the present invention, it can be folded into a small size and is easy to carry, store and install.

本発明にかかる作業用台座の折りたたみ状態の平面図である。It is a top view of the folding state of the work pedestal which concerns on this invention. 折りたたみ状態の作業用台座の側面図である。It is a side view of the work pedestal in a folded state. 展開状態の作業用台座の平面図である。It is a top view of the working pedestal in the unfolded state. 第１脚部の斜視図である。It is a perspective view of the 1st leg part. 第２脚部の斜視図である。It is a perspective view of the 2nd leg part. 第３脚部の斜視図である。It is a perspective view of the 3rd leg part. 第４脚部の斜視図である。It is a perspective view of the 4th leg part. 第２脚部の中心軸と直交する切断面を拡大した断面斜視図である。FIG. 5 is an enlarged cross-sectional perspective view of a cut surface orthogonal to the central axis of the second leg. 第２脚部のさらなる変形例の斜視図である。It is a perspective view of the further modification of the 2nd leg part. 折りたたみ状態の作業用台座の斜視図である。It is a perspective view of the work pedestal in a folded state. 第３脚部および第４脚部が第１脚部を挟んで９０°開いた状態の作業用台座の斜視図である。It is a perspective view of the work pedestal in a state where the 3rd leg part and the 4th leg part are opened 90 ° with respect to the 1st leg part. 第３脚部が９０°以上開いた状態の作業用台座の斜視図である。It is a perspective view of the work pedestal with the 3rd leg part opened by 90 ° or more. 展開状態の作業用台座の斜視図である。It is a perspective view of the work pedestal in an unfolded state. 変形例の作業用台座の折りたたみ状態の平面図である。It is a top view of the folding state of the work pedestal of a modification. 図１４に示す作業用台座の展開状態の平面図である。FIG. 14 is a plan view of the working pedestal shown in FIG. 14 in an unfolded state. 変形例の作業用台座の折りたたみ状態の平面図である。It is a top view of the folding state of the work pedestal of a modification. 作業用台座の側面図である。It is a side view of a work pedestal. 展開状態の作業用台座の斜視図である。It is a perspective view of the work pedestal in an unfolded state.

本発明の実施形態を図面を参照して説明する。なお、以下の説明において、中心軸に沿う方向を「軸方向」、中心軸と直交する方向を「径方向」、中心軸を中心とする円の接線方向を「周方向」とする。また、図２において軸方向上を「上方」とし、軸方向下を「下方」とする。 Embodiments of the present invention will be described with reference to the drawings. In the following description, the direction along the central axis is referred to as "axial direction", the direction orthogonal to the central axis is referred to as "diameter direction", and the tangential direction of the circle centered on the central axis is referred to as "circumferential direction". Further, in FIG. 2, the upper side in the axial direction is referred to as “upper” and the lower side in the axial direction is referred to as “lower”.

＜作業用台座Ａ＞
図１は、本発明にかかる作業用台座Ａの折りたたみ状態Ｓｔ１の平面図である。図２は、折りたたみ状態Ｓｔ１の作業用台座Ａの側面図である。図３は、展開状態Ｓｔ２の作業用台座Ａの平面図である。なお、図１および図３では、滑り止め部１１５、１２５、１３５および１４５は図示を省略している。 <Working pedestal A>
FIG. 1 is a plan view of the work pedestal A according to the present invention in the folded state St1. FIG. 2 is a side view of the work pedestal A in the folded state St1. FIG. 3 is a plan view of the working pedestal A in the deployed state St2. In addition, in FIGS. 1 and 3, the non-slip portions 115, 125, 135 and 145 are not shown.

作業用台座Ａは、例えば、高さがおよそ５８０ｍｍであり、建築現場等において、加工処理を施すパネル状、長尺状等の物品を載置するための台座として用いられる。なお、これ以外にも、天板を載置してテーブルとして使用することも可能である。作業用台座Ａの高さは、一例でありこの高さに限定されない。 The work pedestal A has a height of, for example, about 580 mm, and is used as a pedestal for placing a panel-shaped or long-shaped article to be processed at a construction site or the like. In addition to this, it is also possible to place a top plate and use it as a table. The height of the work pedestal A is an example and is not limited to this height.

図１〜図３に示すように、作業用台座Ａは、第１脚部１１と、第２脚部１２と、第３脚部１３と、第４脚部１４と、シャフト２と、ストッパ部材４と、固定部材５と、を備える。また、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４は、それぞれ、３個の筒部材３０１〜３１２を有する。 As shown in FIGS. 1 to 3, the work pedestal A includes a first leg portion 11, a second leg portion 12, a third leg portion 13, a fourth leg portion 14, a shaft 2, and a stopper member. 4 and a fixing member 5 are provided. Further, the first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14 each have three tubular members 301 to 312.

＜シャフトおよび筒部材＞
図２に示すように、シャフト２は、軸方向に沿って延びる円柱状である。シャフト２は、例えば、アルミニウム合金、ステンレス等の金属、セラミック、ＦＲＰ等で形成されたものを挙げることができるが、これに限定されない。シャフト２は、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４を回転可能に支持できる強度を有する構成を広く採用できる。 <Shaft and cylinder members>
As shown in FIG. 2, the shaft 2 is a columnar shape extending along the axial direction. The shaft 2 may be, for example, one made of an aluminum alloy, a metal such as stainless steel, ceramic, FRP, or the like, but the shaft 2 is not limited thereto. As the shaft 2, a configuration having a strength capable of rotatably supporting the first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14 can be widely adopted.

シャフト２の下端部には、雄ねじ（不図示）が形成されており、雄ねじにはナット２１が螺合されている。そして、筒部材の下端部とナット２１の上端と接触する弾性部材であるばね２２が配されている。ばね２２は、シャフト２を下方に付勢する付勢部材である（図２参照）。 A male screw (not shown) is formed at the lower end of the shaft 2, and a nut 21 is screwed into the male screw. A spring 22 which is an elastic member that comes into contact with the lower end of the tubular member and the upper end of the nut 21 is arranged. The spring 22 is an urging member that urges the shaft 2 downward (see FIG. 2).

筒部材３０１〜３１２は、シャフト２の外周部を囲んで配置される。筒部材３０１〜３１２は、シャフト２周りに回動可能に配置される。なお、以下の説明において、筒部材３０１〜３１２を、それぞれ、上から順に第１筒部材３０１、第２筒部材３０２、・・・、第１２筒部材３１２とする。 The tubular members 301 to 312 are arranged so as to surround the outer peripheral portion of the shaft 2. The tubular members 301 to 312 are rotatably arranged around the shaft 2. In the following description, the tubular members 301 to 312 are referred to as the first tubular member 301, the second tubular member 302, ..., And the 12th tubular member 312, respectively, in this order from the top.

図２に示すように、第１筒部材３０１〜第１２筒部材３１２は、軸方向に隣り合って上から順に配列される。なお、第１筒部材３０１〜第１２筒部材３１２は、それぞれ、独立してシャフト２周りに回動可能である。 As shown in FIG. 2, the first cylinder member 301 to the twelfth cylinder member 312 are arranged adjacent to each other in the axial direction in order from the top. The first cylinder member 301 to the twelfth cylinder member 312 can independently rotate around the shaft 2.

＜第１脚部１１〜第４脚部１４＞
図１に示すように、第１脚部１１はシャフト２の径方向に延びるように配置される。折りたたみ状態Ｓｔ１において、第２脚部１２は、平面視で第１脚部１１の反時計回り方向の隣に配置される。折りたたみ状態Ｓｔ１において、第３脚部１３は、平面視で第２脚部１２の反時計回り方向の隣に配置される。さらに、折りたたみ状態Ｓｔ１において、第４脚部１４は、平面視で第１脚部１１の時計回り方向の隣に配置される。 <1st leg 11th to 4th leg 14>
As shown in FIG. 1, the first leg portion 11 is arranged so as to extend in the radial direction of the shaft 2. In the folded state St1, the second leg portion 12 is arranged next to the first leg portion 11 in the counterclockwise direction in a plan view. In the folded state St1, the third leg portion 13 is arranged next to the second leg portion 12 in the counterclockwise direction in a plan view. Further, in the folded state St1, the fourth leg portion 14 is arranged next to the first leg portion 11 in the clockwise direction in a plan view.

すなわち、作業用台座Ａは折りたたみ状態Ｓｔ１において、第２脚部１２および第４脚部１４が第１脚部１１を周方向に挟んで配置される。そして、第３脚部１３は、第２脚部１２を挟んで第１脚部１１と反対側に配置される。そして、作業用台座Ａが折りたたみ状態Ｓｔ１のとき、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４はそれぞれ隙間を開けて平行または略平行になるように配置される。そして、折りたたみ状態Ｓｔ１にあるとき、周方向外側に配置される第３脚部１３と第４脚部１４とには、固定部材５が取り付けられる。 That is, the work pedestal A is arranged in the folded state St1 with the second leg portion 12 and the fourth leg portion 14 sandwiching the first leg portion 11 in the circumferential direction. Then, the third leg portion 13 is arranged on the side opposite to the first leg portion 11 with the second leg portion 12 interposed therebetween. Then, when the work pedestal A is in the folded state St1, the first leg portion 11, the second leg portion 12, the third leg portion 13 and the fourth leg portion 14 are parallel or substantially parallel to each other with a gap. Be placed. Then, when in the folded state St1, the fixing member 5 is attached to the third leg portion 13 and the fourth leg portion 14 arranged on the outer side in the circumferential direction.

固定部材５は、帯状の部材であり、一端が第３脚部１３の第２脚部１２と対向する面と反対側の面に固定される。そして、固定部材５は、折りたたみ状態Ｓｔ１の作業用台座Ａの径方向外側に配置されて、第４脚部１４の第１脚部１１と対向する面と反対側の面に固定される。このように、固定部材５を第３脚部１３および第４脚部１４に固定することで、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４が周方向にばらけるのを抑制できる。すなわち、固定部材５を用いることで、作業用台座Ａは折りたたみ状態Ｓｔ１を維持できる。 The fixing member 5 is a strip-shaped member, and one end of the fixing member 5 is fixed to a surface of the third leg portion 13 opposite to the surface facing the second leg portion 12. Then, the fixing member 5 is arranged on the radial outer side of the working pedestal A in the folded state St1 and is fixed to the surface of the fourth leg portion 14 opposite to the surface facing the first leg portion 11. By fixing the fixing member 5 to the third leg portion 13 and the fourth leg portion 14 in this way, the first leg portion 11, the second leg portion 12, the third leg portion 13 and the fourth leg portion 14 are rotated. It is possible to suppress the dispersal in the direction. That is, by using the fixing member 5, the working pedestal A can maintain the folded state St1.

なお、固定部材５と第３脚部１３との固定、固定部材５と第４脚部１４との固定の少なくとも一方は、磁石による固定であってもよい。また、第１脚部１１と第２脚部１２、第２脚部１２と第３脚部１３、第１脚部１１と第４脚部１４、それぞれを個別に磁石を用いて固定するような構成であってもよい。 At least one of the fixing member 5 and the third leg portion 13 and the fixing member 5 and the fourth leg portion 14 may be fixed by a magnet. Further, the first leg portion 11 and the second leg portion 12, the second leg portion 12 and the third leg portion 13, and the first leg portion 11 and the fourth leg portion 14 are individually fixed by using magnets. It may be a configuration.

＜第１脚部１１＞
図４は、第１脚部１１の斜視図である。図１〜図４に示すように、第１脚部１１は、本体部１０１を有する。本体部１０１は、周方向に見たとき、矩形状の板材である。なお、本体部１０１の周方向に見た形状は、長方形状であってもよいし、正方形状であってもよい。 <1st leg 11>
FIG. 4 is a perspective view of the first leg portion 11. As shown in FIGS. 1 to 4, the first leg portion 11 has a main body portion 101. The main body 101 is a rectangular plate when viewed in the circumferential direction. The shape of the main body 101 in the circumferential direction may be rectangular or square.

第１脚部１１の本体部１０１は軸方向の上下に互いに平行な辺を有し、上辺の径方向の中間部に、軸方向に凹んだ上部凹所１１１を備える。上部凹所１１１には、ループ状に形成された把持部１１２が備えられる。把持部１１２は、本体部１０１に固定されており、把持部１１２を掴んで持ち上げることで、移動させることができる。把持部１１２が上部凹所１１１の内部に収まることで、作業用台座Ａの上部に物品を載置するとき、把持部１１２と部材との干渉が抑制される。すなわち、把持部１１２は、上部に物品を載置するときに邪魔になりにくい。 The main body 101 of the first leg 11 has sides parallel to each other at the top and bottom in the axial direction, and includes an upper recess 111 recessed in the axial direction in the middle portion in the radial direction of the upper side. The upper recess 111 is provided with a grip portion 112 formed in a loop shape. The grip portion 112 is fixed to the main body portion 101 and can be moved by grasping and lifting the grip portion 112. By fitting the grip portion 112 inside the upper recess 111, interference between the grip portion 112 and the member is suppressed when an article is placed on the upper part of the work pedestal A. That is, the grip portion 112 is less likely to get in the way when the article is placed on the upper portion.

第１脚部１１は、本体部１０１の下辺の径方向の中央部に上方に凹む下部凹所１１３を備える。第１脚部１１は、本体部１０１と、第１筒部材３０１、第５筒部材３０５および第９筒部材３０９とを連結する連結アーム部１１４を備える。連結アーム部１１４は本体部１０１の径方向内側に設けられる。連結アーム部１１４は、第１筒部材３０１、第５筒部材３０５および第９筒部材３０９の外周面と連結される。詳細は後述するが、作業用台座Ａを、折りたたみ状態Ｓｔ１から展開状態Ｓｔ２に変形させるとき、各脚部は、第１脚部１１を中心に、シャフト２周りに回転される。 The first leg portion 11 includes a lower recess 113 that is recessed upward in the radial center portion of the lower side of the main body portion 101. The first leg portion 11 includes a connecting arm portion 114 that connects the main body portion 101 with the first cylinder member 301, the fifth cylinder member 305, and the ninth cylinder member 309. The connecting arm portion 114 is provided inside the main body portion 101 in the radial direction. The connecting arm portion 114 is connected to the outer peripheral surfaces of the first cylinder member 301, the fifth cylinder member 305, and the ninth cylinder member 309. Although the details will be described later, when the working pedestal A is deformed from the folded state St1 to the unfolded state St2, each leg is rotated around the shaft 2 around the first leg 11.

第１脚部１１の上面には、滑り止め部１１５が設けられる。滑り止め部１１５は、複数の凹部を有する構成である。滑り止め部１１５は、上面にパネル状、長尺状の物品を載置したときに、物品のすべりを抑制する。なお、本実施形態では、滑り止め部１１５として上面に設けられた凹部について説明したが、同様に下面に設けられてもよい。また、第１脚部１１では、上部凹所１１１を除く上面の前面に滑り止め部１１５を形成しているが、これに限定されず、一部に形成されるようにしてもよい。 A non-slip portion 115 is provided on the upper surface of the first leg portion 11. The non-slip portion 115 has a configuration having a plurality of recesses. The non-slip portion 115 suppresses the slip of the article when the panel-shaped or long article is placed on the upper surface. In the present embodiment, the recess provided on the upper surface as the non-slip portion 115 has been described, but it may be provided on the lower surface as well. Further, in the first leg portion 11, the non-slip portion 115 is formed on the front surface of the upper surface excluding the upper recess 111, but the present invention is not limited to this, and the first leg portion 11 may be partially formed.

さらに、滑り止め部１１５のすべり止めの効果を有する形状として凹部を採用しているが、これに限定されず、ゴム等のすべり止めの効果を有する部材、凹溝等のすべり止めの効果を有する表面形状等、すべり止めの効果を有する構成を広く採用することができる。また、第１脚部１１を構成する材料が、載置する物品のすべりを制限できる材料である場合、滑り止め部１１５を省略してもよい。 Further, a concave portion is adopted as a shape having an anti-slip effect of the non-slip portion 115, but the present invention is not limited to this, and has an anti-slip effect such as a member having an anti-slip effect such as rubber and a concave groove. A configuration having a non-slip effect such as a surface shape can be widely adopted. Further, when the material constituting the first leg portion 11 is a material capable of limiting the slippage of the article to be placed, the non-slip portion 115 may be omitted.

＜第２脚部１２＞
図５は、第２脚部１２の斜視図である。なお、第２脚部１２は、連結アーム部１２４の形状、連結アーム部１２４で連結される筒部材、および、把持部１１２を備えない点が、第１脚部１１と異なる。そのため、第２脚部１２において、第１脚部１１と同じ部分については、第１脚部１１の対応する部分との対比のみを示し、異なる部分のみ詳細に説明する。 <Second leg 12>
FIG. 5 is a perspective view of the second leg portion 12. The second leg portion 12 is different from the first leg portion 11 in that the shape of the connecting arm portion 124, the tubular member connected by the connecting arm portion 124, and the grip portion 112 are not provided. Therefore, in the second leg portion 12, only the same portion as the first leg portion 11 is shown in comparison with the corresponding portion of the first leg portion 11, and only the different portion will be described in detail.

第２脚部１２の本体部１０２は、第１脚部１１の本体部１０１と対応する。第２脚部１２の上部凹所１２１および下部凹所１２３は、第１脚部１１の上部凹所１１１および下部凹所１１３と対応する。また、第２脚部１２の滑り止め部１２５は、第１脚部１１の滑り止め部１１５と対応する。 The main body 102 of the second leg 12 corresponds to the main body 101 of the first leg 11. The upper recess 121 and the lower recess 123 of the second leg portion 12 correspond to the upper recess 111 and the lower recess 113 of the first leg portion 11. Further, the non-slip portion 125 of the second leg portion 12 corresponds to the non-slip portion 115 of the first leg portion 11.

第２脚部１２は、本体部１０２と第２筒部材３０２、第６筒部材３０６および第１０筒部材３１０とを連結する連結アーム部１２４を備える。連結アーム部１２４は本体部１０２の径方向内側に設けられる。連結アーム部１２４は、第２筒部材３０２、第６筒部材３０６および第１０筒部材３１０の外周面と連結される。 The second leg portion 12 includes a connecting arm portion 124 that connects the main body portion 102 with the second cylinder member 302, the sixth cylinder member 306, and the tenth cylinder member 310. The connecting arm portion 124 is provided inside the main body portion 102 in the radial direction. The connecting arm portion 124 is connected to the outer peripheral surfaces of the second cylinder member 302, the sixth cylinder member 306, and the tenth cylinder member 310.

図１等に示すように、連結アーム部１２４は、平面視において湾曲している。連結アーム部１２４が湾曲することで、第２脚部１２を中心軸Ｃｘ周りに回転させて、折りたたみ状態Ｓｔ１としたとき、第２脚部１２を第１脚部１１と略平行に配置可能である。 As shown in FIG. 1 and the like, the connecting arm portion 124 is curved in a plan view. By bending the connecting arm portion 124, the second leg portion 12 can be arranged substantially parallel to the first leg portion 11 when the second leg portion 12 is rotated around the central axis Cx to bring the folded state St1. be.

つまり、連結アーム部１２４は、厚み方向の中心が中心軸Ｃｘを含む面からずれた第２脚部１２をシャフト２周りに回動させて、第１脚部１１と略平行するために湾曲している。なお、本実施形態において、連結アーム部１２４は、平面視において周方向に湾曲しているがこれに限定されない。屈曲した形状であってもよいし、平板状であってもよい。折りたたみ状態Ｓｔ１において、第２脚部１２の本体部１０２を第１脚部１１の本体部１０１の周方向の隣で本体部１０１と平行または略平行となるように、本体部１０２を第２筒部材３０２、第６筒部材３０６および第１０筒部材３１０に連結可能な形状を広く採用できる。 That is, the connecting arm portion 124 is curved so that the second leg portion 12 whose center in the thickness direction deviates from the surface including the central axis Cx is rotated around the shaft 2 and is substantially parallel to the first leg portion 11. ing. In the present embodiment, the connecting arm portion 124 is curved in the circumferential direction in a plan view, but the present invention is not limited to this. It may have a bent shape or a flat plate shape. In the folded state St1, the main body 102 is placed in the second cylinder so that the main body 102 of the second leg 12 is parallel to or substantially parallel to the main body 101 next to the main body 101 of the first leg 11 in the circumferential direction. A shape that can be connected to the member 302, the sixth cylinder member 306, and the tenth cylinder member 310 can be widely adopted.

＜第３脚部１３＞
図６は、第３脚部１３の斜視図である。なお、第３脚部１３は、連結アーム部１３４の形状、連結アーム部１３４で連結される筒部材、把持部１１２を備えない点、および、スリット１３６を備える点が第１脚部１１と異なる。そのため、第３脚部１３において、第１脚部１１と同じ部分については、第１脚部１１の対応する部分との対比のみを示し、異なる部分のみ詳細に説明する。 <Third leg 13>
FIG. 6 is a perspective view of the third leg portion 13. The third leg portion 13 is different from the first leg portion 11 in that the shape of the connecting arm portion 134, the tubular member connected by the connecting arm portion 134, the point that the grip portion 112 is not provided, and the point that the slit 136 is provided. .. Therefore, in the third leg portion 13, only the same portion as the first leg portion 11 is shown in comparison with the corresponding portion of the first leg portion 11, and only the different portion will be described in detail.

第３脚部１３の本体部１０３は、第１脚部１１の本体部１０１と対応する。第３脚部１３の上部凹所１３１および下部凹所１３３は、第１脚部１１の上部凹所１１１および下部凹所１１３と対応する。また、第３脚部１３の滑り止め部１３５は、第１脚部１１の滑り止め部１１５と対応する。 The main body 103 of the third leg 13 corresponds to the main body 101 of the first leg 11. The upper recess 131 and the lower recess 133 of the third leg portion 13 correspond to the upper recess 111 and the lower recess 113 of the first leg portion 11. Further, the non-slip portion 135 of the third leg portion 13 corresponds to the non-slip portion 115 of the first leg portion 11.

第３脚部１３は、本体部１０３と第３筒部材３０３、第７筒部材３０７および第１１筒部材３１１とを連結する連結アーム部１３４を備える。連結アーム部１３４は本体部１０３の径方向内側に設けられる。連結アーム部１３４は、第３筒部材３０３、第７筒部材３０７および第１１筒部材３１１の外周面と連結される。 The third leg portion 13 includes a connecting arm portion 134 that connects the main body portion 103, the third cylinder member 303, the seventh cylinder member 307, and the eleventh cylinder member 311. The connecting arm portion 134 is provided inside the main body portion 103 in the radial direction. The connecting arm portion 134 is connected to the outer peripheral surfaces of the third cylinder member 303, the seventh cylinder member 307, and the eleventh cylinder member 311.

図１等に示すように、連結アーム部１３４は、平面視において周方向に湾曲している。平面視において連結アーム部１３４の湾曲は、第２脚部１２の連結アーム部１２４の湾曲よりも大きい。 As shown in FIG. 1 and the like, the connecting arm portion 134 is curved in the circumferential direction in a plan view. In a plan view, the curvature of the connecting arm portion 134 is larger than the curvature of the connecting arm portion 124 of the second leg portion 12.

このような、湾曲した連結アーム部１３４を備えることで、第３脚部１３を中心軸Ｃｘ周りに回転させて、折りたたみ状態Ｓｔ１としたとき、第３脚部１３の本体部１０３は、第２脚部１２の本体部１０２と平行または略平行となる。このとき、第３脚部１３の本体部１０３は、周方向において第２脚部１２の本体部１０２を挟んで第１脚部１１の本体部１０１と反対側に配される。 By providing such a curved connecting arm portion 134, when the third leg portion 13 is rotated around the central axis Cx to bring it into the folded state St1, the main body portion 103 of the third leg portion 13 is the second. It is parallel to or substantially parallel to the main body 102 of the leg 12. At this time, the main body 103 of the third leg 13 is arranged on the side opposite to the main body 101 of the first leg 11 with the main body 102 of the second leg 12 interposed therebetween in the circumferential direction.

本実施形態において、第３脚部１３の連結アーム部１３４と第２脚部１２の連結アーム部１２４とは、折りたたみ状態Ｓｔ１において、曲率中心が一致するように形成されている。このように形成することで、折りたたみ状態Ｓｔ１において、連結アーム部１３４と連結アーム部１２４とが干渉しにくい。なお、本実施形態において、連結アーム部１３４は、平面視において周方向に湾曲しているがこれに限定されない。屈曲した形状であってもよいし、平板状であってもよい。 In the present embodiment, the connecting arm portion 134 of the third leg portion 13 and the connecting arm portion 124 of the second leg portion 12 are formed so that the centers of curvature coincide with each other in the folded state St1. By forming in this way, the connecting arm portion 134 and the connecting arm portion 124 are less likely to interfere with each other in the folded state St1. In the present embodiment, the connecting arm portion 134 is curved in the circumferential direction in a plan view, but the present invention is not limited to this. It may have a bent shape or a flat plate shape.

折りたたみ状態Ｓｔ１において、第３脚部１３の本体部１０３を第２脚部１２の本体部１０２の周方向の隣で第２脚部１２の本体部１０２と平行または略平行となるように、本体部１０３を第３筒部材３０３、第７筒部材３０７および第１１筒部材３１１に連結可能な形状を広く採用できる。また、連結アーム部１３４は、折りたたみ状態Ｓｔ１において、連結アーム部１２４と干渉しない形状である。 In the folded state St1, the main body 103 of the third leg 13 is parallel to or substantially parallel to the main body 102 of the second leg 12 next to the main body 102 of the second leg 12 in the circumferential direction. A shape that allows the portion 103 to be connected to the third cylinder member 303, the seventh cylinder member 307, and the eleventh cylinder member 311 can be widely adopted. Further, the connecting arm portion 134 has a shape that does not interfere with the connecting arm portion 124 in the folded state St1.

第３脚部１３は、３個の連結アーム部１３４を備えている。そして、第３脚部１３の連結アーム部１３４は中心軸Ｃｘに沿って並んでおり、第３脚部１３は、連結アーム部１３４と隣り合って配される、凹形状のスリット１３６を備える。スリット１３６は少なくとも展開状態Ｓｔ２のときに第４脚部１４の後述する連結アーム部１４４が挿入される。すなわち、スリット１３６は、展開時に、第４脚部１４の連結アーム部１４４との干渉を回避するための凹部である。 The third leg portion 13 includes three connecting arm portions 134. The connecting arm portions 134 of the third leg portion 13 are arranged along the central axis Cx, and the third leg portion 13 includes a concave slit 136 arranged adjacent to the connecting arm portion 134. When the slit 136 is at least in the deployed state St2, the connecting arm portion 144 described later of the fourth leg portion 14 is inserted. That is, the slit 136 is a recess for avoiding interference with the connecting arm portion 144 of the fourth leg portion 14 at the time of deployment.

＜第４脚部１４＞
図７は、第４脚部１４の斜視図である。なお、第４脚部１４は、連結アーム部１４４の形状、連結アーム部１４４で連結される筒部材、把持部１１２を備えない点、および、スリット１４６を備える点が第１脚部１１と異なる。そのため、第４脚部１４において、第１脚部１１と同じ部分については、第１脚部１１の対応する部分との対比のみを示し、異なる部分のみ詳細に説明する。 <4th leg 14>
FIG. 7 is a perspective view of the fourth leg portion 14. The fourth leg portion 14 is different from the first leg portion 11 in that the shape of the connecting arm portion 144, the tubular member connected by the connecting arm portion 144, the point that the grip portion 112 is not provided, and the point that the slit 146 is provided. .. Therefore, in the fourth leg portion 14, only the same portion as the first leg portion 11 is shown in comparison with the corresponding portion of the first leg portion 11, and only the different portion will be described in detail.

第４脚部１４の本体部１０４は、第１脚部１１の本体部１０１と対応する。第４脚部１４の上部凹所１４１および下部凹所１４３は、第１脚部１１の上部凹所１１１および下部凹所１１３と対応する。また、第４脚部１４の滑り止め部１４５は、第１脚部１１の滑り止め部１１５と対応する。 The main body 104 of the fourth leg 14 corresponds to the main body 101 of the first leg 11. The upper recess 141 and the lower recess 143 of the fourth leg portion 14 correspond to the upper recess 111 and the lower recess 113 of the first leg portion 11. Further, the non-slip portion 145 of the fourth leg portion 14 corresponds to the non-slip portion 115 of the first leg portion 11.

第４脚部１４は、本体部１０４と、第４筒部材３０４、第８筒部材３０８および第１２筒部材３１２とを連結する連結アーム部１４４を備える。連結アーム部１４４は本体部１０４の径方向内側に設けられる。連結アーム部１４４は、第４筒部材３０４、第８筒部材３０８および第１２筒部材３１２の外周面と連結される。 The fourth leg portion 14 includes a main body portion 104 and a connecting arm portion 144 that connects the fourth cylinder member 304, the eighth cylinder member 308, and the twelfth cylinder member 312. The connecting arm portion 144 is provided inside the main body portion 104 in the radial direction. The connecting arm portion 144 is connected to the outer peripheral surfaces of the fourth cylinder member 304, the eighth cylinder member 308, and the twelfth cylinder member 312.

図１等に示すように、連結アーム部１４４は、平面視において周方向に湾曲している。平面視において連結アーム部１４４の湾曲は、第２脚部１２の連結アーム部１２４と反対向きである。 As shown in FIG. 1 and the like, the connecting arm portion 144 is curved in the circumferential direction in a plan view. In a plan view, the curvature of the connecting arm portion 144 is opposite to that of the connecting arm portion 124 of the second leg portion 12.

このような、湾曲した連結アーム部１４４を備えることで、第４脚部１４を中心軸Ｃｘ周りに回転させて、折りたたみ状態Ｓｔ１としたとき、本体部１０４は、第１脚部１１の本体部１０１と平行または略平行になる。なお、第４脚部１４の本体部１０４は、周方向において第１脚部１１の本体部１０１を挟んで第２脚部１２と反対側に配置される。 By providing such a curved connecting arm portion 144, when the fourth leg portion 14 is rotated around the central axis Cx to bring it into the folded state St1, the main body portion 104 is the main body portion of the first leg portion 11. It will be parallel to or substantially parallel to 101. The main body 104 of the fourth leg 14 is arranged on the side opposite to the second leg 12 with the main body 101 of the first leg 11 interposed therebetween in the circumferential direction.

つまり、連結アーム部１４４は、厚み方向の中心が中心軸Ｃｘを含む面からずれた第４脚部１４をシャフト２周りに回動させて、第１脚部１１と平行するために湾曲していると言える。なお、本実施形態において、連結アーム部１４４は、平面視において周方向に湾曲しているがこれに限定されない。屈曲した形状であってもよいし、平板状であってもよい。折りたたみ状態Ｓｔ１において、第４脚部１４の本体部１０４を第１脚部１１の本体部１０１の周方向の隣で本体部１０１と平行または略平行となるように、本体部１０４を第４筒部材３０４、第８筒部材３０８および第１２筒部材３１２に連結可能な形状を広く採用できる。 That is, the connecting arm portion 144 is curved so as to be parallel to the first leg portion 11 by rotating the fourth leg portion 14 whose center in the thickness direction deviates from the surface including the central axis Cx around the shaft 2. It can be said that there is. In the present embodiment, the connecting arm portion 144 is curved in the circumferential direction in a plan view, but the present invention is not limited to this. It may have a bent shape or a flat plate shape. In the folded state St1, the main body 104 is placed in the fourth cylinder so that the main body 104 of the fourth leg 14 is parallel to or substantially parallel to the main body 101 next to the main body 101 of the first leg 11 in the circumferential direction. A shape that can be connected to the member 304, the eighth cylinder member 308, and the twelfth cylinder member 312 can be widely adopted.

第４脚部１４は、４個の連結アーム部１４４を備えている。なお、４個の連結アーム部１４４のうち、中心軸Ｃｘ方向最上の連結アーム部１４４は、筒部材とは連結しないが、連結アーム部１４４と同じ形状であるとともに、第３脚部１３のスリット１３６に挿入される形状であるため、ここでは、連結アーム部１４４の一つとして説明する。 The fourth leg portion 14 includes four connecting arm portions 144. Of the four connecting arm portions 144, the uppermost connecting arm portion 144 in the central axis Cx direction is not connected to the tubular member, but has the same shape as the connecting arm portion 144 and the slit of the third leg portion 13. Since the shape is inserted into 136, it will be described here as one of the connecting arm portions 144.

そして、第４脚部１４の連結アーム部１４４は中心軸Ｃｘに沿って並んでおり、第４脚部１４は、連結アーム部１４４と隣り合って配される、凹形状のスリット１４６を備える。スリット１４６は少なくとも展開状態Ｓｔ２のときに第３脚部１３の連結アーム部１３４が挿入される。すなわち、スリット１４６は、展開時に、第３脚部１３の連結アーム部１３４との干渉を回避する凹部である。 The connecting arm portions 144 of the fourth leg portion 14 are arranged along the central axis Cx, and the fourth leg portion 14 includes a concave slit 146 arranged adjacent to the connecting arm portion 144. When the slit 146 is at least in the deployed state St2, the connecting arm portion 134 of the third leg portion 13 is inserted. That is, the slit 146 is a recess that avoids interference with the connecting arm portion 134 of the third leg portion 13 when deployed.

本実施形態の作業用台座Ａでは、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４は、例えば、ポリプロピレンで形成されている。そのため、作業用台座Ａは、軽量かつ高強度に形成される。なお、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４を構成する材料は、ポリプロピレンに限定されず、例えば、アルミニウム合金、繊維強化複合材料等、軽量かつ物品を載置するための十分な強度を有する材料を広く採用することが可能である。 In the working pedestal A of the present embodiment, the first leg portion 11, the second leg portion 12, the third leg portion 13 and the fourth leg portion 14 are made of polypropylene, for example. Therefore, the work pedestal A is formed to be lightweight and have high strength. The materials constituting the first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14 are not limited to polypropylene, and are lightweight and, for example, an aluminum alloy, a fiber-reinforced composite material, or the like. It is possible to widely adopt a material having sufficient strength for placing an article.

図８は、第２脚部１２の中心軸Ｃｘと直交する切断面を拡大した断面斜視図である。図９は、第２脚部１２のさらなる変形例の斜視図である。作業用台座Ａでは、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４は、第２脚部１２と同様の構成を有する。そのため、ここでは、各脚部を代表して第２脚部１２を引用して説明するが、他の脚部も同様の構成を有する。 FIG. 8 is an enlarged cross-sectional perspective view of a cut surface orthogonal to the central axis Cx of the second leg portion 12. FIG. 9 is a perspective view of a further modified example of the second leg portion 12. In the work pedestal A, the first leg portion 11, the second leg portion 12, the third leg portion 13 and the fourth leg portion 14 have the same configuration as the second leg portion 12. Therefore, although the second leg portion 12 will be referred to and described here on behalf of each leg portion, the other leg portions also have the same configuration.

図８に示すように、第２脚部１２の本体部１０２の内部には、軸方向に延びる中空部１２６が複数個そなえられている。中空部１２６は、物品を載置したときに荷重がかかる方向である軸方向に延びる形状である。そのため、中空部１２６を設けられた第２脚部１２の軽量化しつつ、一定以上の強度を維持することができる。 As shown in FIG. 8, a plurality of hollow portions 126 extending in the axial direction are provided inside the main body portion 102 of the second leg portion 12. The hollow portion 126 has a shape extending in the axial direction, which is the direction in which a load is applied when an article is placed. Therefore, it is possible to maintain a certain level of strength while reducing the weight of the second leg portion 12 provided with the hollow portion 126.

また、図９に示す第２脚部１２の本体部１０２に厚み方向に貫通した孔１２７を形成してもよい。このような構成とすることで、脚部１２の軽量化が可能である。なお、孔１２７は、第２脚部１２が物品を確実かつ安全に支持できる強度を有するような大きさ、形状、位置に設けられる。 Further, a hole 127 penetrating in the thickness direction may be formed in the main body portion 102 of the second leg portion 12 shown in FIG. With such a configuration, the weight of the leg portion 12 can be reduced. The holes 127 are provided in a size, shape, and position so that the second leg portion 12 has the strength to reliably and safely support the article.

なお、上述したとおり、第１脚部１１、第３脚部１３および第４脚部１４にも、第２脚部１２の中空部１２６および（または）孔１２７と同じ構成の中空部および（または）孔を備えてもよい。 As described above, the first leg portion 11, the third leg portion 13, and the fourth leg portion 14 also have a hollow portion and / or a hollow portion having the same configuration as the hollow portion 126 and / or the hole 127 of the second leg portion 12. ) May be provided with holes.

＜ストッパ部材４＞
図１〜図３等に示すように、ストッパ部材４は円板状の部材である。ストッパ部材４はシャフト２の上端に固定される。ストッパ部材４は、展開状態Ｓｔ２で、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４の周方向の移動を制限する、すなわち、固定する。 <Stopper member 4>
As shown in FIGS. 1 to 3, the stopper member 4 is a disk-shaped member. The stopper member 4 is fixed to the upper end of the shaft 2. The stopper member 4 restricts, that is, fixes the movement of the first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14 in the circumferential direction in the deployed state St2.

ストッパ部材４は、第１凹部４１と、第２凹部４２と、第３凹部４３と、操作稈４４と、を有する。第１凹部４１は、第１脚部１１が嵌合可能な形状を有する。第２凹部４２は、第２脚部１２が嵌合可能な形状を有する。第３脚部１３の連結アーム部１３４を第４脚部１４のスリット１４６に嵌合させ、第４脚部１４の連結アーム部１４４を第３脚部１３のスリット１３６に嵌合させた状態の第３脚部１３および第４脚部１４が嵌合可能な形状を有する。 The stopper member 4 has a first recess 41, a second recess 42, a third recess 43, and an operation culm 44. The first recess 41 has a shape into which the first leg 11 can be fitted. The second recess 42 has a shape into which the second leg portion 12 can be fitted. A state in which the connecting arm portion 134 of the third leg portion 13 is fitted into the slit 146 of the fourth leg portion 14, and the connecting arm portion 144 of the fourth leg portion 14 is fitted into the slit 136 of the third leg portion 13. The third leg portion 13 and the fourth leg portion 14 have a shape in which they can be fitted.

そして、展開状態Ｓｔ２において、ストッパ部材４が第１凹部４１に第１脚部１１を収容可能な位置にあるときに、第２凹部４２は第２脚部１２を収容可能な位置に形成される。また、第３凹部４３は、展開状態Ｓｔ２において、組み合わせた第３脚部１３および第４脚部１４を収容可能な位置に形成される。 Then, in the deployed state St2, when the stopper member 4 is in a position where the first leg portion 11 can be accommodated in the first recess 41, the second recess 42 is formed in a position where the second leg portion 12 can be accommodated. .. Further, the third recess 43 is formed at a position where the combined third leg portion 13 and fourth leg portion 14 can be accommodated in the deployed state St2.

操作稈４４は、ストッパ部材４の上面に配置される。操作稈４４は、使用者が把持可能な取手である。使用者が操作稈４４を把持して上方に持ち上げることで、ストッパ部材４およびシャフト２は、ばね２２の弾性力に抗して上方に移動する。また、使用者が操作稈４４から手を離すことで、ストッパ部材４は、ばね２２の弾性力で下方に移動する。なお、ばね２２を省略し、シャフト２およびストッパ部材４の自重によって下方に移動するようにしてもよい。 The operation culm 44 is arranged on the upper surface of the stopper member 4. The operation culm 44 is a handle that can be grasped by the user. When the user grasps the operation culm 44 and lifts it upward, the stopper member 4 and the shaft 2 move upward against the elastic force of the spring 22. Further, when the user releases his / her hand from the operation culm 44, the stopper member 4 moves downward by the elastic force of the spring 22. The spring 22 may be omitted and the shaft 2 and the stopper member 4 may be moved downward by their own weight.

ストッパ部材４は、展開状態Ｓｔ２のとき、第１凹部４１が第１脚部１１と軸方向に重なる。これと同時に、第２凹部４２が第２脚部１２と軸方向に重なり、第３凹部４３が第３脚部１３および第４脚部１４と軸方向に重なる。これにより、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４の径方向内側の一部が、それぞれ、第１凹部４１、第２凹部４２および第３凹部４３に収容されて固定される。 In the stopper member 4, the first recess 41 overlaps with the first leg 11 in the axial direction in the unfolded state St2. At the same time, the second recess 42 axially overlaps the second leg 12, and the third recess 43 axially overlaps the third leg 13 and the fourth leg 14. As a result, a part of the radial inner side of the first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14 becomes the first recess 41, the second recess 42, and the third recess, respectively. It is housed in 43 and fixed.

第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４は、それぞれ、同数の筒部材と連結される。そして、第１筒部材３０１〜第１２筒部材３１２を軸方向に配列し、内部にシャフト２を貫通させることで、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４は互いに連結される。すなわち、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４は、シャフト２および筒部材を介して、互いに連結される。 The first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14 are each connected to the same number of tubular members. Then, by arranging the first cylinder members 301 to the twelfth cylinder members 312 in the axial direction and penetrating the shaft 2 inside, the first leg portion 11, the second leg portion 12, the third leg portion 13 and the fourth The legs 14 are connected to each other. That is, the first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14 are connected to each other via the shaft 2 and the tubular member.

展開状態Ｓｔ２において、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４のそれぞれには、各脚部を厚み方向に転倒させる力が作用する場合がある。脚部に作用する力は、筒部材およびシャフト２を介して、他の脚部に伝達される。 In the deployed state St2, a force that causes each leg to fall in the thickness direction may act on each of the first leg 11, the second leg 12, the third leg 13, and the fourth leg 14. The force acting on the leg is transmitted to the other legs via the tubular member and the shaft 2.

例えば、第１脚部１１を厚み方向に転倒させる力は、第１筒部材３０１、第４筒部材３０４および第９筒部材３０９を介してシャフト２に伝達される。 For example, the force for overturning the first leg portion 11 in the thickness direction is transmitted to the shaft 2 via the first cylinder member 301, the fourth cylinder member 304, and the ninth cylinder member 309.

平面視において、第２脚部１２および第４脚部１４が、第１脚部１１が直交する方向に延びる。そのため、第１脚部１１に作用する第１脚部１１を厚み方向に転倒させる力は、シャフト２、第２筒部材３０２、第６筒部材３０６および第１０筒部材３１０を介して第２脚部１２に伝達され、第２脚部１２が踏ん張ることで、支持される。同様に、第１脚部１１に作用する第１脚部１１を厚み方向に転倒させる力で反対向きの力は、シャフト２、第４筒部材３０４、第８筒部材３０８および第１２筒部材３１２を介して第４脚部１４に伝達され、第４脚部１４が踏ん張ることで、支持される。 In a plan view, the second leg portion 12 and the fourth leg portion 14 extend in a direction orthogonal to the first leg portion 11. Therefore, the force that causes the first leg portion 11 acting on the first leg portion 11 to tip over in the thickness direction is applied to the second leg via the shaft 2, the second cylinder member 302, the sixth cylinder member 306, and the tenth cylinder member 310. It is transmitted to the portion 12, and is supported by the second leg portion 12 being stepped on. Similarly, the force acting on the first leg portion 11 to overturn the first leg portion 11 in the thickness direction and the force in the opposite direction is the shaft 2, the fourth cylinder member 304, the eighth cylinder member 308, and the twelfth cylinder member 312. It is transmitted to the fourth leg portion 14 via the above, and is supported by the fourth leg portion 14 being stepped on.

各脚部に作用する脚部を厚み方向に転倒させる力は、同様にシャフト２および筒部材を介して他の脚部に伝達されて、他の脚部が踏ん張ることで支持される。 The force acting on each leg to overturn the leg in the thickness direction is similarly transmitted to the other leg via the shaft 2 and the tubular member, and is supported by the other leg being stepped on.

作業用台座Ａにおいて、第１筒部材３０１〜第１２筒部材３１２の軸方向の長さが同じである。また、各脚部が連結される筒部材の個数が同じである。そのため、各脚部の筒部材のシャフト２と径方向に対向する部分の軸方向の長さが同じである。そのため、作用する力が、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４の一部に集中しにくい。これにより、作業用台座Ａに力が作用しても、各脚部で分散して支持するため、変形、破損等を抑制することが可能である。 In the work pedestal A, the lengths of the first cylinder member 301 to the twelfth cylinder member 312 in the axial direction are the same. Further, the number of tubular members to which each leg is connected is the same. Therefore, the axial length of the portion of each leg that faces the shaft 2 of the tubular member in the radial direction is the same. Therefore, it is difficult for the acting force to concentrate on a part of the first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14. As a result, even if a force acts on the work pedestal A, it is dispersed and supported by each leg, so that deformation, breakage, etc. can be suppressed.

なお、本実施形態では、第１脚部１１の筒部材、第２脚部１２の筒部材、第３脚部１３の筒部材および第４脚部１４の筒部材が、この順番で軸方向上方から順に繰り返す。しかしながら、これに限定されず、バラバラであってもよい。また、軸方向の上下にそれぞれ、同じ順番で並ぶように配置してもよい。 In the present embodiment, the tubular member of the first leg portion 11, the tubular member of the second leg portion 12, the tubular member of the third leg portion 13, and the tubular member of the fourth leg portion 14 are axially upward in this order. Repeat in order from. However, the present invention is not limited to this, and may be disjointed. Further, they may be arranged so as to be arranged in the same order on the upper and lower sides in the axial direction.

また、本実施形態では、各脚部は、３個の筒部材を備えているが、３個に限定されない。軸方向に移動しないような配列であれば３個に限定されない。また、各脚部が備える筒部材の個数は、同数でなくてもよい。この場合も、各脚部が備える筒部材の中心軸Ｃｘ方向の長さの合計が、同じであることが好ましい。 Further, in the present embodiment, each leg portion includes three tubular members, but is not limited to three. The number is not limited to three as long as the arrangement does not move in the axial direction. Further, the number of tubular members provided in each leg does not have to be the same. Also in this case, it is preferable that the total length of the tubular members provided in each leg in the Cx direction of the central axis is the same.

＜展開／折りたたみ＞
本発明にかかる作業用台座Ａを折りたたみ状態Ｓｔ１と展開状態Ｓｔ２との間で状態変化させる手順について図面を参照して説明する。図１０は、折りたたみ状態Ｓｔ１の作業用台座Ａの斜視図である。図１１は、第３脚部１３および第４脚部１４が第１脚部１１を挟んで９０°開いた状態の作業用台座Ａの斜視図である。図１２は、第３脚部１３が９０°以上開いた状態の作業用台座Ａの斜視図である。図１３は、展開状態Ｓｔ２の作業用台座Ａの斜視図である。なお、図１０〜図１３では、滑り止め部１１５、１２５、１３５および１４５の図示を省略している。 <Unfolding / Folding>
The procedure for changing the state of the working pedestal A according to the present invention between the folded state St1 and the unfolded state St2 will be described with reference to the drawings. FIG. 10 is a perspective view of the working pedestal A in the folded state St1. FIG. 11 is a perspective view of the work pedestal A in a state where the third leg portion 13 and the fourth leg portion 14 are opened by 90 ° with the first leg portion 11 interposed therebetween. FIG. 12 is a perspective view of the work pedestal A in a state where the third leg portion 13 is opened by 90 ° or more. FIG. 13 is a perspective view of the working pedestal A in the deployed state St2. In addition, in FIGS. 10 to 13, the non-slip portions 115, 125, 135 and 145 are not shown.

作業用台座Ａは、折りたたみ状態Ｓｔ１においてストッパ部材４は、上方に移動した位置にある。このときストッパ部材４は、底面が第２脚部１２、第３脚部１３および第４脚部１４の上面と接触している。これにより、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４は、ストッパ部材４による制限を受けず、シャフト２周りに回動可能である。 The work pedestal A is in a position where the stopper member 4 is moved upward in the folded state St1. At this time, the bottom surface of the stopper member 4 is in contact with the upper surfaces of the second leg portion 12, the third leg portion 13, and the fourth leg portion 14. As a result, the first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14 can rotate around the shaft 2 without being restricted by the stopper member 4.

作業用台座Ａが折りたたみ状態Ｓｔ１のとき、固定部材５が周方向両端の第３脚部１３および第４脚部１４に固定されて、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４の移動を制限する。これにより、作業用台座Ａは、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４を折りたたみ状態Ｓｔ１に維持される。作業用台座Ａは、この状態で把持部１１２を把持して運搬可能である。すなわち、作業用台座Ａは、折りたたまれて小型化された折りたたみ状態Ｓｔ１で、運搬可能である。 When the work pedestal A is in the folded state St1, the fixing member 5 is fixed to the third leg 13 and the fourth leg 14 at both ends in the circumferential direction, and the first leg 11, the second leg 12, and the third leg are fixed. The movement of the portion 13 and the fourth leg portion 14 is restricted. As a result, the work pedestal A maintains the first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14 in the folded state St1. The work pedestal A can grip and carry the grip portion 112 in this state. That is, the work pedestal A can be transported in the folded state St1 which is folded and miniaturized.

また、作業用台座Ａは、倉庫等の収納場所に収納されるときも折りたたみ状態Ｓｔ１で収納される。作業用台座Ａは、小型の折りたたみ状態Ｓｔ１で収納されるため、収納スペースを有効利用可能である。また、作業用車両等に乗せる場合にも、収納スペースが小さくて済むため、利便性が高い。 Further, the work pedestal A is stored in the folded state St1 even when it is stored in a storage place such as a warehouse. Since the work pedestal A is stored in a small folded state St1, the storage space can be effectively used. In addition, it is highly convenient because the storage space can be small even when it is placed on a work vehicle or the like.

作業用台座Ａは、各脚部を周方向に開いた展開状態Ｓｔ２で使用される。次に、折りたたみ状態Ｓｔ１から展開状態Ｓｔ２への展開について説明する。まず、固定部材５を取り外し（図１０参照）、第４脚部１４を周方向に第１脚部１１から離れる方向に移動させる（図１１参照）。第４脚部１４は第１脚部１１に対して略９０°開いた定位置まで移動される。第４脚部１４を開くことで、第１脚部１１の厚み方向に踏ん張ることができるため、展開動作中に作業用台座Ａが倒れにくい。 The work pedestal A is used in the unfolded state St2 in which each leg is opened in the circumferential direction. Next, the expansion from the folded state St1 to the expanded state St2 will be described. First, the fixing member 5 is removed (see FIG. 10), and the fourth leg portion 14 is moved in the circumferential direction away from the first leg portion 11 (see FIG. 11). The fourth leg 14 is moved to a fixed position that is approximately 90 ° open with respect to the first leg 11. By opening the fourth leg portion 14, the first leg portion 11 can be stepped on in the thickness direction, so that the work pedestal A does not easily fall during the unfolding operation.

第４脚部１４を移動させると同時に、周方向の外側に配置される第３脚部１３を周方向に第２脚部１２から離れる方向に移動させる。第３脚部１３と第４脚部１４は、それぞれ、周方向に反対方向に移動される。なお、第３脚部１３と第４脚部１４はどちらかを先に移動させてもよいし、全く同時に移動させてもよい。 At the same time as moving the fourth leg portion 14, the third leg portion 13 arranged outside in the circumferential direction is moved in the circumferential direction away from the second leg portion 12. The third leg portion 13 and the fourth leg portion 14 are moved in opposite directions in the circumferential direction, respectively. Either the third leg portion 13 or the fourth leg portion 14 may be moved first, or may be moved at exactly the same time.

第３脚部１３は、第１脚部１１に対して略１８０°開いた位置が定位置である。そのため、第３脚部１３は、図１１に示す状態から、周方向にさらに移動される。そして、第３脚部１３は一定角度開いたとき、第３脚部１３の連結アーム部１３４が第４脚部１４のスリット１４６に挿入される。また、同時に第４脚部１４の連結アーム部１４４が第３脚部１３のスリット１３６に挿入される。そのため、第４脚部１４に干渉されず、第３脚部１３が回動することができる（図１２参照）。 The position where the third leg portion 13 is opened by approximately 180 ° with respect to the first leg portion 11 is a fixed position. Therefore, the third leg portion 13 is further moved in the circumferential direction from the state shown in FIG. Then, when the third leg portion 13 is opened at a certain angle, the connecting arm portion 134 of the third leg portion 13 is inserted into the slit 146 of the fourth leg portion 14. At the same time, the connecting arm portion 144 of the fourth leg portion 14 is inserted into the slit 136 of the third leg portion 13. Therefore, the third leg portion 13 can rotate without being interfered with by the fourth leg portion 14 (see FIG. 12).

第３脚部１３をさらに回動させることで、第３脚部１３は、第１脚部１１と略１８０°をなす定位置に到達する。このとき、第３脚部１３と第４脚部１４とは、略直角をなし、互いに接触する（図１３参照）。このとき、第３脚部１３の連結アーム部１３４と第４脚部１４の連結アーム部１４４が軸方向に接触した状態で固定されるため、第３脚部１３と第４脚部１４は強固に連結される。 By further rotating the third leg portion 13, the third leg portion 13 reaches a fixed position forming approximately 180 ° with the first leg portion 11. At this time, the third leg portion 13 and the fourth leg portion 14 form a substantially right angle and come into contact with each other (see FIG. 13). At this time, since the connecting arm portion 134 of the third leg portion 13 and the connecting arm portion 144 of the fourth leg portion 14 are fixed in a state of being in axial contact with each other, the third leg portion 13 and the fourth leg portion 14 are firmly formed. Is connected to.

なお、上述の説明では、第３脚部１３を、一旦、第２脚部１２に対して９０°開いた状態にし、その後、第３脚部１３をさらに移動させているが、これに限定されない。第３脚部１３は、折りたたみ状態Ｓｔ１の位置から定位置まで、途中で停止させることなく移動するようにしてもよい。また、連結アーム部１３４を第４脚部１４のスリット１４６に挿入する直前で停止し、位置を確かめた後、開くようにしてもよい。この場合、第４脚部１４が、定位置まで移動していると作業がやりやすく好ましい。 In the above description, the third leg portion 13 is once opened by 90 ° with respect to the second leg portion 12, and then the third leg portion 13 is further moved, but the present invention is not limited to this. .. The third leg portion 13 may be moved from the position of the folded state St1 to the fixed position without stopping in the middle. Further, the connecting arm portion 134 may be stopped immediately before being inserted into the slit 146 of the fourth leg portion 14, and may be opened after confirming the position. In this case, it is preferable that the fourth leg portion 14 is moved to a fixed position because the work can be easily performed.

そして、第３脚部１３と第４脚部１４とを組み合わせた状態で、第２脚部１２を第１脚部１１に対して周方向に略９０°開いた定位置に移動させる。これにより、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４は、展開状態Ｓｔ２の配置となる。 Then, in the state where the third leg portion 13 and the fourth leg portion 14 are combined, the second leg portion 12 is moved to a fixed position which is substantially 90 ° open in the circumferential direction with respect to the first leg portion 11. As a result, the first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14 are arranged in the deployed state St2.

このとき、ストッパ部材４の第１凹部４１が第１脚部１１と軸方向に重なり、第１脚部１１の径方向内側の一部を収容可能な状態になる。同時に、第２凹部４２が第２脚部１２と重なり、第２脚部１２の径方向内側の一部を収容可能な状態になる。さらに同時に、第３凹部４３が組み合わせられた第３脚部１３および第４脚部１４と重なり、第３脚部１３および第４脚部１４の径方向内側の一部を収容可能な状態になる。これにより、ストッパ部材４が軸方向下方に移動可能になり、ばね２２の弾性力によりシャフト２ごとストッパ部材４が下方に移動する。 At this time, the first recess 41 of the stopper member 4 overlaps with the first leg 11 in the axial direction, and a part of the inner side of the first leg 11 in the radial direction can be accommodated. At the same time, the second recess 42 overlaps with the second leg portion 12, and a part of the radial inner side of the second leg portion 12 can be accommodated. Further, at the same time, the third leg portion 43 overlaps with the combined third leg portion 13 and the fourth leg portion 14, so that a part of the radial inner side of the third leg portion 13 and the fourth leg portion 14 can be accommodated. .. As a result, the stopper member 4 can move downward in the axial direction, and the elastic force of the spring 22 causes the stopper member 4 to move downward together with the shaft 2.

これにより、ストッパ部材４の第１凹部４１に第１脚部１１が収容され、第２凹部４２に第２脚部１２が収容され、第３凹部４３に組み合わせられた第３脚部１３および第４脚部１４が収容される。すなわち、ストッパ部材４は、周方向において、第１脚部１１と第２脚部１２の間、第２脚部１２と第３脚部１３の間、第３脚部１３と第４脚部１４の間および第４脚部１４と第１脚部１１の間に挿入される。 As a result, the first leg portion 11 is housed in the first recess 41 of the stopper member 4, the second leg portion 12 is housed in the second recess 42, and the third leg portion 13 and the second leg are combined with the third recess 43. The four legs 14 are accommodated. That is, in the circumferential direction, the stopper member 4 is between the first leg portion 11 and the second leg portion 12, between the second leg portion 12 and the third leg portion 13, and between the third leg portion 13 and the fourth leg portion 14. It is inserted between the four legs and between the fourth leg 14 and the first leg 11.

第１脚部１１、第２脚部１２、第３脚部および第４脚部１４の周方向の面の少なくとも一方は、ストッパ部材４の第１凹部４１、第２凹部４２および第３凹部４３の内側面とそれぞれ接触する。これにより、第１脚部１１、第２脚部１２、第３脚部および第４脚部１４の周方向の移動が制限され、作業用台座Ａは展開状態Ｓｔ２で維持される、あるいは、固定される。 At least one of the circumferential surfaces of the first leg 11, the second leg 12, the third leg, and the fourth leg 14 is the first recess 41, the second recess 42, and the third recess 43 of the stopper member 4. Contact each of the inner surfaces of the. As a result, the movement of the first leg portion 11, the second leg portion 12, the third leg portion and the fourth leg portion 14 in the circumferential direction is restricted, and the work pedestal A is maintained or fixed in the deployed state St2. Will be done.

作業用台座Ａが展開状態Ｓｔ２のとき、第１脚部１１、第２脚部１２、第３脚部および第４脚部１４の上面が、略面一になる。作業用台座Ａに加工対象のパネル状、長尺状等の物品を安定して載置可能である。このとき、ストッパ部材４の上面は、第１脚部１１、第２脚部１２、第３脚部および第４脚部１４の上面と略面一か、これらよりも低くなる。これにより物品を安定して載置できる。 When the work pedestal A is in the deployed state St2, the upper surfaces of the first leg portion 11, the second leg portion 12, the third leg portion, and the fourth leg portion 14 are substantially flush with each other. A panel-shaped or long-shaped article to be processed can be stably placed on the work pedestal A. At this time, the upper surface of the stopper member 4 is substantially flush with or lower than the upper surfaces of the first leg portion 11, the second leg portion 12, the third leg portion, and the fourth leg portion 14. As a result, the article can be placed stably.

また、径方向に一定の長さを有する脚部が、周方向に間隔をあけて配置される。そのため、作業用台座Ａに中心軸Ｃｘと直交する方向の成分を有する力が作用しても、作業用台座Ａが転倒しにくい。これにより、作業用台座Ａに載置された物品に加工を施すときに、作業用台座Ａに中心軸Ｃｘと直交する方向の力が作用しても、作業用台座Ａは転倒しにくい。このため、作業用台座Ａを使用して、安全に作業が可能である。 Further, the legs having a constant length in the radial direction are arranged at intervals in the circumferential direction. Therefore, even if a force having a component in the direction orthogonal to the central axis Cx acts on the work pedestal A, the work pedestal A is unlikely to tip over. As a result, when the article placed on the work pedestal A is processed, even if a force in the direction orthogonal to the central axis Cx acts on the work pedestal A, the work pedestal A is unlikely to tip over. Therefore, the work pedestal A can be used for safe work.

次に展開状態Ｓｔ２の作業用台座Ａを折りたたみ状態Ｓｔ１に変形させる手順について説明する。上述のとおり、作業用台座Ａでは、展開状態Ｓｔ２のとき、周方向に隣り合う脚部同士の間に、ストッパ部材４が嵌っている。そのため、作業用台座Ａを展開状態Ｓｔ２から折りたたみ状態Ｓｔ１に変形するとき、まず、使用者はストッパ部材４の操作稈４４を掴んで持ち上げ、ストッパ部材４を上方に移動させる。これにより、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４の周方向の移動制限が解除される。 Next, a procedure for transforming the working pedestal A in the unfolded state St2 into the folded state St1 will be described. As described above, in the work pedestal A, the stopper member 4 is fitted between the leg portions adjacent to each other in the circumferential direction in the deployed state St2. Therefore, when the work pedestal A is deformed from the unfolded state St2 to the folded state St1, the user first grasps and lifts the operation culm 44 of the stopper member 4 and moves the stopper member 4 upward. As a result, the movement restriction in the circumferential direction of the first leg portion 11, the second leg portion 12, the third leg portion 13 and the fourth leg portion 14 is released.

そして、第２脚部１２を周方向に第１脚部１１に近接するとともに第１脚部１１と略平行な位置まで移動させる。なお、ストッパ部材４は、第２脚部１２が第２凹部４２と軸方向に重なる位置から移動した後、作業用台座Ａを展開状態Ｓｔ２に固定する位置に移動できなくなる。そのため、使用者は、少なくとも１つの脚部が移動開始した後、操作稈４４の引き上げ動作を終了可能である。 Then, the second leg portion 12 is moved closer to the first leg portion 11 in the circumferential direction and to a position substantially parallel to the first leg portion 11. The stopper member 4 cannot move to a position where the work pedestal A is fixed to the deployed state St2 after the second leg portion 12 moves from a position where the second leg portion 12 overlaps with the second recess 42 in the axial direction. Therefore, the user can end the pulling operation of the operation culm 44 after the movement of at least one leg has started.

その後、第３脚部１３を周方向において、第２脚部１２と同じ方向に第２脚部１２と近接するとともに略平行な位置まで移動させる。また、第４脚部１４を周方向において、第２脚部１２と反対方向に第１脚部１１と近接するとともに略平行な位置まで移動させる。なお、第３脚部１３および第４脚部１４の移動は、どちらが先でもよいし、同時でもよい。また、脚部の移動順は、一例であり、これに限定されない。 After that, the third leg portion 13 is moved in the circumferential direction in the same direction as the second leg portion 12 to a position close to and substantially parallel to the second leg portion 12. Further, the fourth leg portion 14 is moved in the circumferential direction in the direction opposite to the second leg portion 12 so as to be close to the first leg portion 11 and to a position substantially parallel to the first leg portion 11. The movement of the third leg portion 13 and the fourth leg portion 14 may be performed first or at the same time. Further, the order of movement of the legs is an example and is not limited to this.

第３脚部１３は、第１脚部１１と略１８０°開いた位置にあり、第３脚部１３を折りたたみ状態Ｓｔ１の位置に移動させてしまうと、第１脚部１１の厚み方向に倒れやすくなる懸念がある。そのため、第４脚部１４を先に移動させることが好ましい。この時、第３脚部１３が一定の位置、例えば、第３脚部１３を第１脚部１１を挟んで、第４脚部１４と略対称となる位置まで移動させた後、第３脚部１３と第４脚部１４とを同時に移動させてもよい。 The third leg portion 13 is located at a position substantially 180 ° apart from the first leg portion 11, and when the third leg portion 13 is moved to the position of the folded state St1, it falls in the thickness direction of the first leg portion 11. There is a concern that it will be easier. Therefore, it is preferable to move the fourth leg portion 14 first. At this time, the third leg 13 is moved to a fixed position, for example, a position where the third leg 13 is sandwiched between the first leg 11 and substantially symmetrical with the fourth leg 14, and then the third leg. The portion 13 and the fourth leg portion 14 may be moved at the same time.

本発明にかかる作業用台座Ａでは、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４をシャフト２周りに回動させて展開状態Ｓｔ２にする構成である。つまり、作業用台座Ａはひとまとまりの構成であるため、２以上の部材に分割する作業用台座に比べて、収納、運搬が容易である。 The work pedestal A according to the present invention has a configuration in which the first leg portion 11, the second leg portion 12, the third leg portion 13 and the fourth leg portion 14 are rotated around the shaft 2 to be in the deployed state St2. .. That is, since the work pedestal A has a single structure, it is easier to store and transport than the work pedestal divided into two or more members.

また、作業用台座Ａは、第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４をポリプロピレンで形成することで、軽量かつ高強度とできる。そのため、運搬が容易であるとともに、重量物である物品を載置することも可能であり、これらの点からも、本発明にかかる作業用台座Ａは、利便性が高い。 Further, the work pedestal A can be made lightweight and high in strength by forming the first leg portion 11, the second leg portion 12, the third leg portion 13 and the fourth leg portion 14 from polypropylene. Therefore, the work pedestal A according to the present invention is highly convenient because it is easy to carry and it is possible to place a heavy article on it.

なお、ストッパ部材４の下面に、折りたたみ状態Ｓｔ１において、第３脚部１３および第４脚部１４の周方向の外側と接触する部材を設けてもよい。この部材は、ストッパ部材４を持ち上げたときに、下端部が第１脚部１１、第２脚部１２、第３脚部１３および第４脚部１４の上面よりも上方に位置するように形成されるとよい。このように形成することでストッパ部材４を持ち上げたとき、第２脚部１２、第３脚部１３および第４脚部１４が、周方向に移動可能である。 The lower surface of the stopper member 4 may be provided with a member that comes into contact with the outside of the third leg portion 13 and the fourth leg portion 14 in the circumferential direction in the folded state St1. This member is formed so that when the stopper member 4 is lifted, the lower end portion is located above the upper surfaces of the first leg portion 11, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14. It should be done. By forming the stopper member 4 in this way, when the stopper member 4 is lifted, the second leg portion 12, the third leg portion 13, and the fourth leg portion 14 can move in the circumferential direction.

また、折りたたみ状態Ｓｔ１において、第３脚部１３および第４脚部１４の周方向の外側の面と接触するため、第３脚部１３および第４脚部１４の移動を制限することが可能である。これにより、作業用台座Ａは、折りたたみ状態Ｓｔ１で維持される。なお、固定部材５を併用することで、作業用台座Ａは、より強固に折りたたみ状態Ｓｔ１に維持される。 Further, in the folded state St1, since the third leg portion 13 and the fourth leg portion 14 come into contact with the outer surfaces in the circumferential direction, the movement of the third leg portion 13 and the fourth leg portion 14 can be restricted. be. As a result, the working pedestal A is maintained in the folded state St1. By using the fixing member 5 together, the working pedestal A is more firmly maintained in the folded state St1.

作業用台座Ａにおいて、筒部材３０１〜３１２の外径を大きくすることで、第３脚部１３と第４脚部１４の干渉をなくすことが可能である。この場合、第３脚部１３のスリット１３６および第４脚部１４のスリット１４６が省略可能である。なお、スリットをなくすことができる筒部材３０１〜３１２の外径は、脚部の厚みによって決まる。 By increasing the outer diameter of the tubular members 301 to 312 in the work pedestal A, it is possible to eliminate the interference between the third leg portion 13 and the fourth leg portion 14. In this case, the slit 136 of the third leg portion 13 and the slit 146 of the fourth leg portion 14 can be omitted. The outer diameter of the tubular members 301 to 312 that can eliminate the slit is determined by the thickness of the leg portion.

＜第１変形例＞
本発明にかかる作業用台座の変形例について図面を参照して説明する。図１４は、変形例の作業用台座Ａ１の折りたたみ状態の平面図である。図１５は、図１４に示す作業用台座Ａ１の展開状態の平面図である。 <First modification>
A modified example of the working pedestal according to the present invention will be described with reference to the drawings. FIG. 14 is a plan view of the working pedestal A1 of the modified example in the folded state. FIG. 15 is a plan view of the working pedestal A1 shown in FIG. 14 in an unfolded state.

作業用台座Ａ１は、第１脚部６１、第２脚部６２、第３脚部６３および第４脚部６４が、それぞれ、第１脚部１１、第２脚部１２、第３脚部６３および第４脚部１４と異なる形状を有する。これ以外の点について、変形例の作業用台座Ａ１は、図１等に示す作業用台座Ａと同じ構成を有する。そのため、作業用台座Ａ１において、作業用台座Ａと実質上同じ部分には、同じ符号を付すとともに同じ部分の詳細な説明は省略する。また、各脚部において、同様の構成を有する部分は、対応する構成を示し、詳細な説明は省略する。 In the work pedestal A1, the first leg 61, the second leg 62, the third leg 63, and the fourth leg 64 have the first leg 11, the second leg 12, and the third leg 63, respectively. And has a different shape from the fourth leg portion 14. Regarding other points, the working pedestal A1 of the modified example has the same configuration as the working pedestal A shown in FIG. 1 and the like. Therefore, in the work pedestal A1, substantially the same parts as the work pedestal A are designated by the same reference numerals, and detailed description of the same parts will be omitted. Further, in each leg portion, a portion having the same configuration indicates a corresponding configuration, and detailed description thereof will be omitted.

図１４、図１５に示すように、作業用台座Ａ１は、第１脚部６１、第２脚部６２、第３脚部６３および第４脚部６４を有する。 As shown in FIGS. 14 and 15, the working pedestal A1 has a first leg portion 61, a second leg portion 62, a third leg portion 63, and a fourth leg portion 64.

なお、第１脚部６１の本体部６０１は、第１脚部１１の本体部１０１と対応する。第１脚部６１の上部凹所６１１は、第１脚部１１の上部凹所１１１と対応する。第１脚部６１の把持部６１２は、第１脚部１１の把持部１１２と対応する。第１脚部６１の下部凹所６１３は、第１脚部１１の下部凹所１１３と対応する。第１脚部６１の連結アーム部６１４は、第１脚部１１の連結アーム部１１４と対応する。 The main body 601 of the first leg 61 corresponds to the main body 101 of the first leg 11. The upper recess 611 of the first leg 61 corresponds to the upper recess 111 of the first leg 11. The grip portion 612 of the first leg portion 61 corresponds to the grip portion 112 of the first leg portion 11. The lower recess 613 of the first leg 61 corresponds to the lower recess 113 of the first leg 11. The connecting arm portion 614 of the first leg portion 61 corresponds to the connecting arm portion 114 of the first leg portion 11.

第１脚部６１は、平面視において径方向の外縁部に、軸方向に延びる脚筒部６１０を有する。脚筒部６１０は、軸方向に延びる筒体である。脚筒部６１０を備えることで、径方向の断面係数、断面二次モーメントを大きくすることができる。そのため、脚筒部６１０を備える第１脚部６１は備えない構成に対して、径方向の剛性を高めることが可能である。なお、脚筒部６１０は、径方向外側の端部に配置されているが、これに限定されない。例えば、径方向外縁よりも径方向内側に配置されてもよい。また、複数個の脚筒部６１０を備えてもよい。径方向の断面係数、断面二次モーメントを大きくするため、脚筒部６１０は、径方向外縁の近傍に設けられることが好ましい。 The first leg portion 61 has a leg tube portion 610 extending in the axial direction at the outer edge portion in the radial direction in a plan view. The leg cylinder portion 610 is a cylinder extending in the axial direction. By providing the leg tube portion 610, the geometrical moment of inertia and the geometrical moment of inertia in the radial direction can be increased. Therefore, it is possible to increase the rigidity in the radial direction with respect to the configuration in which the first leg portion 61 including the leg cylinder portion 610 is not provided. The leg tube portion 610 is arranged at the end portion on the outer side in the radial direction, but the present invention is not limited to this. For example, it may be arranged radially inside the outer edge in the radial direction. Further, a plurality of leg tube portions 610 may be provided. In order to increase the radial cross-sectional coefficient and the geometrical moment of inertia, the leg tube portion 610 is preferably provided in the vicinity of the radial outer edge.

本変形例では、脚筒部６１０は中空の筒としているが、これに限定されない。内部に補強用の芯部材を配置してさらに剛性を上げるようにしてもよい。このような構成とすることで、第１脚部６１は、第１脚部１１よりも高剛性とすることができる。換言すると、剛性が同じ場合、第１脚部６１の構成にすることで、薄く形成できる、すなわち、軽量に構成することが可能である。また、芯部材は着脱可能としてもよい。これにより、上部に載置される物品によって芯部材の要否を選択できるため、作業用台座Ａ１を軽量で使用することも可能になり、利便性が高くなる。 In this modification, the leg tube portion 610 is a hollow tube, but the present invention is not limited to this. A core member for reinforcement may be arranged inside to further increase the rigidity. With such a configuration, the first leg portion 61 can be made more rigid than the first leg portion 11. In other words, when the rigidity is the same, the first leg portion 61 can be formed thin, that is, can be made lightweight. Further, the core member may be removable. As a result, the necessity of the core member can be selected depending on the article placed on the upper part, so that the work pedestal A1 can be used with a light weight, and the convenience is improved.

また、第２脚部６２の本体部６０２は、第２脚部１２の本体部１０２と対応する。第２脚部６２の上部凹所６２１は、第２脚部１２の上部凹所１２１と対応する。第２脚部６２の下部凹所６２３は、第２脚部１２の下部凹所１１３と対応する。第２脚部６２の連結アーム部６２４は、第２脚部１２の連結アーム部１２４と対応する。 Further, the main body portion 602 of the second leg portion 62 corresponds to the main body portion 102 of the second leg portion 12. The upper recess 621 of the second leg 62 corresponds to the upper recess 121 of the second leg 12. The lower recess 623 of the second leg 62 corresponds to the lower recess 113 of the second leg 12. The connecting arm portion 624 of the second leg portion 62 corresponds to the connecting arm portion 124 of the second leg portion 12.

さらに、第３脚部６３の本体部６０３は、第３脚部１３の本体部１０３と対応する。第３脚部６３の上部凹所６３１は、第３脚部１３の上部凹所１３１と対応する。第３脚部６３の下部凹所６３３は、第２脚部１２の下部凹所１３３と対応する。第３脚部６３の連結アーム部６３４は、第３脚部１３の連結アーム部１３４と対応する。 Further, the main body portion 603 of the third leg portion 63 corresponds to the main body portion 103 of the third leg portion 13. The upper recess 631 of the third leg 63 corresponds to the upper recess 131 of the third leg 13. The lower recess 633 of the third leg 63 corresponds to the lower recess 133 of the second leg 12. The connecting arm portion 634 of the third leg portion 63 corresponds to the connecting arm portion 134 of the third leg portion 13.

そして、第４脚部６４の本体部６０４は、第４脚部１４の本体部１０４と対応する。第４脚部６４の上部凹所６４１は、第４脚部１４の上部凹所１４１と対応する。第４脚部６４の下部凹所６４３は、第４脚部１４の下部凹所１４３と対応する。第４脚部６４の連結アーム部６４４は、第４脚部１４の連結アーム部１４４と対応する。 The main body 604 of the fourth leg 64 corresponds to the main body 104 of the fourth leg 14. The upper recess 641 of the fourth leg portion 64 corresponds to the upper recess 141 of the fourth leg portion 14. The lower recess 643 of the fourth leg 64 corresponds to the lower recess 143 of the fourth leg 14. The connecting arm portion 644 of the fourth leg portion 64 corresponds to the connecting arm portion 144 of the fourth leg portion 14.

また、第２脚部６２は脚筒部６２０を備える。第３脚部６３は脚筒部６３０を備える。第４脚部６４は脚筒部６４０を備える。脚筒部６２０、脚筒部６３０および脚筒部６４０は、脚筒部６１０と同様の構成を有する。これにより、第２脚部６２、第３脚部６３および第４脚部６４の剛性を高める、または、剛性を落とすことなく軽量化が可能である。 Further, the second leg portion 62 includes a leg tube portion 620. The third leg portion 63 includes a leg tube portion 630. The fourth leg portion 64 includes a leg tube portion 640. The leg tube portion 620, the leg tube portion 630, and the leg tube portion 640 have the same configuration as the leg tube portion 610. As a result, the rigidity of the second leg portion 62, the third leg portion 63, and the fourth leg portion 64 can be increased, or the weight can be reduced without reducing the rigidity.

また、図１４に示すように、第１脚部６１、第２脚部６２、第３脚部６３および第４脚部６４では、脚筒部６１０、６２０、６３０、６４０の外径が他の部分の厚みよりも大きい。そのため、作業用台座Ａ１では、折りたたみ状態Ｓｔ１において、脚筒部６１０、６２０、６３０、６４０がずれるように、第１脚部６１、第２脚部６２、第３脚部６３および第４脚部６４の長さを調整している。 Further, as shown in FIG. 14, in the first leg portion 61, the second leg portion 62, the third leg portion 63, and the fourth leg portion 64, the outer diameters of the leg tube portions 610, 620, 630, and 640 are other. It is larger than the thickness of the part. Therefore, in the work pedestal A1, the first leg 61, the second leg 62, the third leg 63, and the fourth leg are displaced so that the leg cylinders 610, 620, 630, and 640 are displaced in the folded state St1. The length of 64 is adjusted.

具体的には、折りたたみ状態Ｓｔ１において、第１脚部６１の脚筒部６１０がシャフトから最も遠い。脚筒部６２０、６４０が第１脚部６１に沿って脚筒部６１０よりもシャフト２に近接した位置に配置されるように、第２脚部６２および第４脚部６４の径方向の長さが決定される。そして、脚筒部６３０が第２脚部６２に沿って脚筒部６２０よりもシャフト２に近接した位置に配置されるように、第３脚部６３の径方向長さが決定される。このように形成することで、折りたたみ状態Ｓｔ１において、脚筒部６１０、６２０、６３０、６４０が互いに当たることで、作業用台座Ａ１が周方向に拡がることを抑制できる。 Specifically, in the folded state St1, the leg tube portion 610 of the first leg portion 61 is the farthest from the shaft. The radial lengths of the second leg 62 and the fourth leg 64 so that the leg 620s and 640s are arranged along the first leg 61 closer to the shaft 2 than the leg 610. Is determined. Then, the radial length of the third leg portion 63 is determined so that the leg cylinder portion 630 is arranged along the second leg portion 62 at a position closer to the shaft 2 than the leg cylinder portion 620. By forming in this way, in the folded state St1, the leg cylinders 610, 620, 630, and 640 come into contact with each other, so that the work pedestal A1 can be prevented from expanding in the circumferential direction.

以上示した、本実施形態の作業用台座Ａ、Ａ１では、第１脚部１１、６１の位置を決めた状態で、第２脚部１２、６２、第３脚部１３、６３および第４脚部１４、６４を移動させて、折りたたみ状態Ｓｔ１と展開状態Ｓｔ２とに変形させている。しかしながら、これに限定されず、第１脚部以外の脚部の位置を決めて、残りの脚部を移動するようにしてもよい。また、すべての脚部をそれぞれ移動させるようにしてもよい。 In the work pedestals A and A1 of the present embodiment shown above, the second legs 12, 62, the third legs 13, 63 and the fourth leg are in a state where the positions of the first legs 11 and 61 are determined. The portions 14 and 64 are moved to transform them into a folded state St1 and an unfolded state St2. However, the present invention is not limited to this, and the positions of the legs other than the first leg may be determined so that the remaining legs can be moved. In addition, all the legs may be moved individually.

また、本実施形態の作業用台座Ａ、Ａ１では、４個の脚部を備える構成を例に説明しているが、これに限定されない。例えば、３個の脚部を有してもよいし、４個以上の脚部を備えていてもよい。作業用台座Ａ、Ａ１が自立可能であるとともに、上部に載置した物品に対して加工を行うときに作用する力によって転倒しにくいように、脚部は、３個以上備える構成であることが好ましい。 Further, in the work pedestals A and A1 of the present embodiment, a configuration including four legs is described as an example, but the present invention is not limited to this. For example, it may have three legs or may have four or more legs. The work pedestals A and A1 can stand on their own, and the legs must be provided with three or more legs so that the articles placed on the upper part can not easily tip over due to the force acting when processing the article. preferable.

さらに、１２個の筒部材３０１〜３１２を備える構成としているが、これに限定されない。また、筒部材３０１〜３１２の軸方向の長さもすべて同じでなくてもよい。複数の脚部に備えられる筒部材の軸方向の長さの合計が脚部ごとに同じであれば、軸方向の長さおよび連結される筒部材の個数が異なっていてもよい。 Further, the configuration includes 12 tubular members 301 to 312, but the present invention is not limited to this. Further, the axial lengths of the tubular members 301 to 312 do not have to be the same. As long as the total axial length of the tubular members provided on the plurality of legs is the same for each leg, the axial length and the number of connected tubular members may be different.

例えば、長さが異なる長筒部材、中筒部材、短筒部材を有し、長筒部材が短筒部材の３倍、中筒部材が短筒部材の２倍の長さとする。第１脚部１１が６個の短筒部材と連結し、第２脚部１２が３個の中筒部材と連結し、第３脚部１３および第４脚部１４がそれぞれ２個の長筒部材と連結するような構成であってもよい。 For example, it has a long cylinder member, a middle cylinder member, and a short cylinder member having different lengths, and the long cylinder member has three times the length of the short cylinder member and the middle cylinder member has twice the length of the short cylinder member. The first leg 11 is connected to six short cylinder members, the second leg 12 is connected to three middle cylinder members, and the third leg 13 and the fourth leg 14 are each two long cylinders. It may be configured to be connected to a member.

＜第２変形例＞
本発明にかかる作業用台座のさらなる変形例について図面を参照して説明する。図１６は、変形例の作業用台座Ｂの折りたたみ状態の平面図である。図１７は、図１６に示す作業用台座Ｂの側面図である。図１８は、展開状態の作業用台座Ｂの斜視図である。以下、作業用台座Ｂの作業用台座Ａ１と異なる部分について説明を行い、同様の構成を有する部分は、対応する構成を示し、詳細な説明は省略する。 <Second modification>
A further modification of the working pedestal according to the present invention will be described with reference to the drawings. FIG. 16 is a plan view of the working pedestal B of the modified example in the folded state. FIG. 17 is a side view of the work pedestal B shown in FIG. FIG. 18 is a perspective view of the working pedestal B in the deployed state. Hereinafter, a portion of the work pedestal B different from the work pedestal A1 will be described, and a portion having the same configuration indicates a corresponding configuration, and detailed description thereof will be omitted.

作業用台座Ｂは、第１脚部７１、第２脚部７２および第３脚部７３を有する。作業用台座Ｂの第１脚部７１、第２脚部７２および第３脚部７３は、それぞれ、作業用台座Ａ１の第１脚部６１、第２脚部６２および第４脚部６４と類似した構成である。 The work pedestal B has a first leg portion 71, a second leg portion 72, and a third leg portion 73. The first leg 71, the second leg 72, and the third leg 73 of the work pedestal B are similar to the first leg 61, the second leg 62, and the fourth leg 64 of the work pedestal A1, respectively. It is a configuration that has been completed.

第１脚部７１の本体部７０１は、第１脚部６１の本体部６０１と対応する。第１脚部７１の上部凹所７１１は、第１脚部６１の上部凹所６１１と対応する。第１脚部７１の把持部７１２は、第１脚部６１の把持部６１２と対応する。第１脚部７１の下部凹所７１３は、第１脚部６１の下部凹所６１３と対応する。第１脚部７１の脚筒部７１０は、第１脚部６１の脚筒部６１０と対応する。 The main body 701 of the first leg 71 corresponds to the main body 601 of the first leg 61. The upper recess 711 of the first leg 71 corresponds to the upper recess 611 of the first leg 61. The grip portion 712 of the first leg portion 71 corresponds to the grip portion 612 of the first leg portion 61. The lower recess 713 of the first leg 71 corresponds to the lower recess 613 of the first leg 61. The leg tube portion 710 of the first leg portion 71 corresponds to the leg tube portion 610 of the first leg portion 61.

第１脚部７１の連結アーム部７１４は、第１脚部６１の連結アーム部６１４と対応する。連結アーム部７１４は、第１筒部材３０１、第４筒部材３０４、第７筒部材３０７および第１０筒部材３１０の外周面と連結される。 The connecting arm portion 714 of the first leg portion 71 corresponds to the connecting arm portion 614 of the first leg portion 61. The connecting arm portion 714 is connected to the outer peripheral surfaces of the first cylinder member 301, the fourth cylinder member 304, the seventh cylinder member 307, and the tenth cylinder member 310.

また、第１脚部７１の脚筒部７１０は、第１脚部６１の脚筒部６１０と対応する。脚筒部７１０の内部には、芯部材７１６が挿入されている。これにより、第１脚部７１の剛性を高めることが可能である。また、第１脚部７１の脚筒部７１０の径方向内側にマグネット７１５が配置されている。芯部材７１６は、磁性材料で形成されており、マグネット７１５に近接して配置される。このため、芯部材７１６は、マグネット７１５によって磁化される。 Further, the leg tube portion 710 of the first leg portion 71 corresponds to the leg tube portion 610 of the first leg portion 61. A core member 716 is inserted inside the leg tube portion 710. Thereby, it is possible to increase the rigidity of the first leg portion 71. Further, the magnet 715 is arranged inside the leg tube portion 710 of the first leg portion 71 in the radial direction. The core member 716 is made of a magnetic material and is arranged close to the magnet 715. Therefore, the core member 716 is magnetized by the magnet 715.

第２脚部７２の本体部７０２は、第２脚部６２の本体部６０２と対応する。第２脚部７２の上部凹所７２１は、第２脚部６２の上部凹所６２１と対応する。第２脚部７２の下部凹所７２３は、第２脚部６２の下部凹所６２３と対応する。第２脚部７２の脚筒部７２０は、第２脚部６２の脚筒部６２０と対応する。 The main body 702 of the second leg 72 corresponds to the main body 602 of the second leg 62. The upper recess 721 of the second leg 72 corresponds to the upper recess 621 of the second leg 62. The lower recess 723 of the second leg 72 corresponds to the lower recess 623 of the second leg 62. The leg tube portion 720 of the second leg portion 72 corresponds to the leg tube portion 620 of the second leg portion 62.

第２脚部７２の連結アーム部７２４は、第２脚部６２の連結アーム部６２４と対応する。連結アーム部７２４は、第２筒部材３０２、第５筒部材３０５、第８筒部材３０８および第１１筒部材３１１の外周面と連結される。 The connecting arm portion 724 of the second leg portion 72 corresponds to the connecting arm portion 624 of the second leg portion 62. The connecting arm portion 724 is connected to the outer peripheral surfaces of the second cylinder member 302, the fifth cylinder member 305, the eighth cylinder member 308, and the eleventh cylinder member 311.

また、第２脚部７２の脚筒部７２０は、第２脚部６２の脚筒部６２０と対応する。脚筒部７２０の内部には、芯部材７２６が挿入されている。これにより、第２脚部７２の剛性を高めることが可能である。芯部材７２６は、磁性材料で形成されている。折りたたみ状態において、芯部材７２６は、マグネット７１５に近接して配置される。折りたたみ状態において、芯部材７２６が磁力によってマグネット７１５および芯部材７１６に引っ張られる。これにより、折りたたみ状態において、第２脚部７２は第１脚部７１と近接した状態に維持される。 Further, the leg tube portion 720 of the second leg portion 72 corresponds to the leg tube portion 620 of the second leg portion 62. A core member 726 is inserted inside the leg tube portion 720. Thereby, it is possible to increase the rigidity of the second leg portion 72. The core member 726 is made of a magnetic material. In the folded state, the core member 726 is placed close to the magnet 715. In the folded state, the core member 726 is pulled by the magnet 715 and the core member 716 by magnetic force. As a result, in the folded state, the second leg portion 72 is maintained in a state of being close to the first leg portion 71.

第３脚部７３の本体部７０３は、第３脚部６３の本体部６０３と対応する。第３脚部７３の上部凹所７３１は、第３脚部６３の上部凹所６３１と対応する。第３脚部７３の下部凹所７３３は、第３脚部６３の下部凹所６３３と対応する。第３脚部７３の脚筒部７３０は、第３脚部６３の脚筒部６３０と対応する。 The main body 703 of the third leg 73 corresponds to the main body 603 of the third leg 63. The upper recess 731 of the third leg 73 corresponds to the upper recess 631 of the third leg 63. The lower recess 733 of the third leg 73 corresponds to the lower recess 633 of the third leg 63. The leg tube portion 730 of the third leg portion 73 corresponds to the leg tube portion 630 of the third leg portion 63.

第３脚部７３の連結アーム部７３４は、第３脚部６３の連結アーム部６３４と対応する。連結アーム部７３４は、第３筒部材３０３、第６筒部材３０６、第９筒部材３０９および第１２筒部材３１２の外周面と連結される。 The connecting arm portion 734 of the third leg portion 73 corresponds to the connecting arm portion 634 of the third leg portion 63. The connecting arm portion 734 is connected to the outer peripheral surfaces of the third cylinder member 303, the sixth cylinder member 306, the ninth cylinder member 309, and the twelfth cylinder member 312.

また、第３脚部７３の脚筒部７３０は、第３脚部６３の脚筒部６３０と対応する。脚筒部７３０の内部には、芯部材７３６が挿入されている。これにより、第３脚部７３の剛性を高めることが可能である。芯部材７３６は、磁性材料で形成されている。折りたたみ状態Ｓｔ１において、芯部材７３６は、マグネット７１５に近接して配置される。折りたたみ状態Ｓｔ１において、芯部材７３６が磁力によってマグネット７１５および芯部材７１６に引っ張られる。これにより、折りたたみ状態Ｓｔ１において、第３脚部７３は第１脚部７１と近接した状態に維持される。すなわち、芯部材７１６、７２６、７３６およびマグネット７１５が固定部材の役割を果たす。なお、本実施形態では、第１脚部７１の本体部７０１にマグネット７１５を取り付けた構成としているが、これに限定されない。芯部材７１６、７２６、７３６を互いに引き合うことが可能なように配置されたマグネットとしてもよい。 Further, the leg tube portion 730 of the third leg portion 73 corresponds to the leg tube portion 630 of the third leg portion 63. A core member 736 is inserted inside the leg tube portion 730. Thereby, it is possible to increase the rigidity of the third leg portion 73. The core member 736 is made of a magnetic material. In the folded state St1, the core member 736 is arranged close to the magnet 715. In the folded state St1, the core member 736 is pulled by the magnet 715 and the core member 716 by magnetic force. As a result, in the folded state St1, the third leg portion 73 is maintained in a state of being close to the first leg portion 71. That is, the core members 716, 726, 736 and the magnet 715 serve as fixing members. In the present embodiment, the magnet 715 is attached to the main body 701 of the first leg 71, but the present invention is not limited to this. The core members 716, 726, and 736 may be magnets arranged so as to be able to attract each other.

また、作業用台座Ｂのストッパ部材４ｂは、第１凹部４６と、第２凹部４７と、第３凹部４８と、操作稈４４と、を有する。第１凹部４６は、ストッパ部材４の第１凹部４１と同様の形状である。第２凹部４７は、ストッパ部材４の第２凹部４２と同様の形状であり、第１凹部４６に対する周方向の角度が第１凹部４１に対する第２凹部４２の周方向の角度と異なる。すなわち、第２凹部４７は第２脚部７２が第１脚部７１に対して約１２０°開いた位置で第２脚部７２が嵌合される。 Further, the stopper member 4b of the work pedestal B has a first recess 46, a second recess 47, a third recess 48, and an operation culm 44. The first recess 46 has the same shape as the first recess 41 of the stopper member 4. The second recess 47 has the same shape as the second recess 42 of the stopper member 4, and the angle in the circumferential direction with respect to the first recess 46 is different from the angle in the circumferential direction of the second recess 42 with respect to the first recess 41. That is, the second leg portion 72 is fitted in the second recess 47 at a position where the second leg portion 72 is opened by about 120 ° with respect to the first leg portion 71.

第３凹部４８は、第３脚部７３が展開状態Ｓｔ２の位置にあるときに、第３脚部７３が嵌合可能形状を有する。なお、第３凹部４８は、第２凹部４７と第１凹部４６を挟んで対称となる位置に形成される。また、第２凹部４７と第３凹部４８は、第１凹部４６の中心線を構成し、ストッパ部材４ｂの径方向に延びる線を挟んで線対称となる。 The third recess 48 has a shape in which the third leg 73 can be fitted when the third leg 73 is in the position of the deployed state St2. The third recess 48 is formed at symmetrical positions with the second recess 47 and the first recess 46 interposed therebetween. Further, the second recess 47 and the third recess 48 form a center line of the first recess 46, and are line-symmetrical with a line extending in the radial direction of the stopper member 4b.

作業用台座Ｂは、展開状態Ｓｔ２において、第１脚部７１と第２脚部７２、第２脚部７２と第３脚部７３、第３脚部７３と第１脚部７１それぞれの中心軸Ｃｘを中心とする中心角は、約１２０°である。すなわち、第１脚部７１、第２脚部７２および第３脚部７３は、周方向に略等間隔となるように配置される。これにより、作業用台座Ｂは安定して自立することが可能である。 The work pedestal B has the central axes of the first leg 71 and the second leg 72, the second leg 72 and the third leg 73, and the third leg 73 and the first leg 71 in the deployed state St2. The central angle centered on Cx is about 120 °. That is, the first leg portion 71, the second leg portion 72, and the third leg portion 73 are arranged at substantially equal intervals in the circumferential direction. As a result, the work pedestal B can stably stand on its own.

なお、本実施形において、作業用台座Ａ、Ａ１は、４脚、作業用台座Ｂは３脚であるが、これに限定されない。脚部の数は特に限定しないが、安定して自立可能とするために、少なくとも３脚であることが好ましい。また、５脚以上としてもよいが、折りたたみ状態の大きさが大きくなり、さらに、連結アーム部の形状が複雑になってしまうため、３脚、４脚程度が好ましい。 In the present embodiment, the work pedestals A and A1 have four legs, and the work pedestal B has three legs, but the present invention is not limited to this. The number of legs is not particularly limited, but at least three legs are preferable in order to enable stable independence. Further, the number of legs may be 5 or more, but since the size of the folded state becomes large and the shape of the connecting arm portion becomes complicated, about 3 legs and 4 legs are preferable.

以上、本発明の実施形態につき説明したが、本発明の範囲はこれに限定されるものではなく、発明の主旨を逸脱しない範囲で種々の変更を加えて実施することができる。また、上記実施形態とその変形例は適宜任意に組み合わせることができる。 Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to this, and various modifications can be made without departing from the gist of the invention. Further, the above-described embodiment and its modification can be arbitrarily combined as appropriate.

Ａ 作業用台座
１１ 第１脚部
１２ 第２脚部
１３ 第３脚部
１４ 第４脚部
２ シャフト
２１ ナット
２２ ばね
３０１ 第１筒部材
３０２ 第２筒部材
３０３ 第３筒部材
３０４ 第４筒部材
３０５ 第５筒部材
３０６ 第６筒部材
３０７ 第７筒部材
３０８ 第８筒部材
３０９ 第９筒部材
３１０ 第１０筒部材
３１１ 第１１筒部材
３１２ 第１２筒部材
４ ストッパ部材
４１ 第１凹部
４２ 第２凹部
４３ 第３凹部
４４ 操作稈
５ 固定部材
Ｃｘ 中心軸
Ｓｔ１ 状態
Ｓｔ２ 展開状態 A Work pedestal 11 1st leg 12 2nd leg 13 3rd leg 14 4th leg 2 shaft 21 nut 22 spring 301 1st cylinder member 302 2nd cylinder member 303 3rd cylinder member 304 4th cylinder member 305 5th cylinder member 306 6th cylinder member 307 7th cylinder member 308 8th cylinder member 309 9th cylinder member 310 10th cylinder member 311 11th cylinder member 312 12th cylinder member 4 Stopper member 41 1st recess 42 2nd Recess 43 Third recess 44 Operation culm 5 Fixing member Cx Central axis St1 state St2 Expanded state

Claims (8)

上下に延びる中心軸を中心とする円柱状のシャフトと、
前記シャフトを中心に中心軸を基準とする周方向に移動可能な少なくとも３個の脚部と、を備え、前記脚部の上面に物品を載置可能な作業用台座であって、
前記脚部は、前記中心軸を基準とする周方向が厚み方向になるように配される板状の本体部と、前記シャフトの径方向外側に回転可能に配置された１または複数の筒部材と、を有するとともに、前記本体部が前記筒部材と連結する連結アーム部を有し、
周方向に隣り合う前記脚部同士が周方向に離れて配される展開状態と、複数の前記脚部が前記中心軸に沿って前記シャフトの周りに回転されて互いに周方向に接近して配された折りたたみ状態とに状態変化可能であり、
前記折りたたみ状態において、複数の前記脚部の前記本体部が厚み方向に配列される作業用台座。 A cylindrical shaft about the central axis extending in up and down,
Before SL and a least three legs movable in a circumferential direction relative to the central axis about the shaft, the article on the upper surface of the leg portion a can be placed working base,
The legs are a plate-shaped main body arranged so that the circumferential direction with respect to the central axis is the thickness direction, and one or a plurality of tubular members rotatably arranged on the radial outer side of the shaft. And, and the main body portion has a connecting arm portion for connecting to the tubular member.
A deployed state in which the legs adjacent to each other in the circumferential direction are arranged apart from each other in the circumferential direction, and a plurality of the legs are rotated around the shaft along the central axis and arranged close to each other in the circumferential direction. The state can be changed to the folded state,
A work pedestal in which the main bodies of a plurality of the legs are arranged in the thickness direction in the folded state. 前記折りたたみ状態において配列方向の両外側に配された２個の脚部は、前記連結アーム部と交互に配されるスリットを有し、前記展開状態のとき、前記２個の脚部のうちの一方の脚部の前記スリットには、他方の脚部の前記連結アーム部が収納される請求項１に記載の作業用台座。 The two legs arranged on both outer sides in the arrangement direction in the folded state have slits arranged alternately with the connecting arm portion, and in the unfolded state, of the two legs. The work pedestal according to claim 1, wherein the connecting arm portion of the other leg portion is housed in the slit of the one leg portion. 前記展開状態において各前記脚部の周方向に向く面と接触して前記脚部の周方向の移動を制限するストッパ部材をさらに備える請求項１または請求項２に記載の作業用台座。 The work pedestal according to claim 1 or 2, further comprising a stopper member that contacts the surface of each leg in the unfolded state and restricts the movement of the leg in the circumferential direction. 前記シャフトが前記中心軸に沿って移動可能であり、
前記ストッパ部材が前記シャフトの上端に固定されており、
前記シャフトは、複数の前記脚部が前記展開状態になったときに前記中心軸に沿って下方に移動する請求項３に記載の作業用台座。 The shaft is movable along the central axis and
The stopper member is fixed to the upper end of the shaft, and the stopper member is fixed to the upper end of the shaft.
The work pedestal according to claim 3, wherein the shaft moves downward along the central axis when the plurality of legs are in the deployed state. 前記シャフトの下端に配置されて前記シャフトを前記中心軸に沿って下方に付勢する付勢部材をさらに備える請求項４に記載の作業用台座。 The work pedestal according to claim 4, further comprising an urging member arranged at the lower end of the shaft and urging the shaft downward along the central axis. 各前記脚部の前記筒部材の前記中心軸方向の長さの合計がすべての前記脚部で同じである請求項１から請求項５のいずれかに記載の作業用台座。 The work pedestal according to any one of claims 1 to 5, wherein the total length of the tubular member of each of the legs in the central axis direction is the same for all the legs. 全ての前記筒部材の前記中心軸方向の長さが同じであり、
異なる前記脚部の前記筒部材が、前記中心軸方向に隣り合う請求項１から請求項６のいずれかに記載の作業用台座。 All the tubular members have the same length in the central axial direction.
The work pedestal according to any one of claims 1 to 6, wherein the tubular members of different legs are adjacent to each other in the central axis direction. 前記脚部はそれぞれ２個以上の同数の前記筒部材を備えており、
各前記脚部の前記筒部材が順次所定の順番で繰り返して配列される請求項７に記載の作業用台座。 Each of the legs includes two or more of the same number of tubular members.
The work pedestal according to claim 7, wherein the tubular members of the legs are sequentially and repeatedly arranged in a predetermined order.
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