JP3669908B2

JP3669908B2 - Stand

Info

Publication number: JP3669908B2
Application number: JP2000267005A
Authority: JP
Inventors: 東次菊地
Original assignee: 株式会社キクチ科学研究所
Priority date: 2000-09-04
Filing date: 2000-09-04
Publication date: 2005-07-13
Anticipated expiration: 2020-09-04
Also published as: JP2002072352A

Description

【０００１】
【発明が属する技術分野】
本発明は物品を支持姿勢調節可能に設置する架台に関する。
【０００２】
【従来の技術】
例えば投影装置（液晶ビデオプロジェクター、３管式ビデオプロジェクター、映写機、幻灯機等）を天井から吊り下げて設置し、壁面等に設置したスクリーンの面に映像を投影する方式の場合、投影装置は天井側の不動部材に対して天吊り架台を介して支持姿勢調節可能に設置される（例えば、特開平９−１８５１２５号公報）。
【０００３】
【発明が解決しようとする課題】
例えば３管式ビデオプロジェクターなどは５０〜６０ｋｇの重量物であり、そのために従来の天吊り架台はそのような重量物を十分に支持することができ、しかも吊り下げ設置の投影装置の位置や姿勢を所要に調整でき、その調整状態を安定に保持することができる必要があり、一般的には大型で、部品点数の多い複雑な構造で、また設置や調整に手間がかかるものが多い。
【０００４】
最近は、例えば液晶ビデオプロジェクターなどは小型化・軽量化が進み、重量が３〜５ｋｇ程度の軽量品も出現していることから、より簡便で安価な天吊り架台が要望されている。
【０００５】
本発明はこの要望に応えるものである。
【０００６】
【課題を解決するための手段】
本発明は下記の構造を特徴とする架台である。
【００１２】
不動部材（Ａ）に対して定着具（３４）により固定して取付けられる据え部（２）と、物品（１００）を取付ける物品取付部（３）と、前記据え部（２）と前記物品取付部（３）とを連結させた球継手部（４）と、を有し、
前記球継手部（４）は、第１の台座（１７）と、前記第１の台座（１７）に可動に係合させた二つ割の抱球部材（１９・２０）と、前記二つ割の抱球部材（１９・２０）間に抱持させた球体（２３）と、前記二つ割の抱球部材（１９・２０）に連結され、回動操作レバー（２２）により締め方向に回動されることで前記二つ割の抱球部材（１９・２０）を球体（２３）を挟んで引き締めて球体（２３）の動きを固定化し、緩め方向に回動されることで前記二つ割の抱球部材（１９・２０）の引き締めを緩めて球体（２３）の動きを自由にする横ねじ棒（２１）と、前記球体（２３）に首部（２４）を介して連設した第２の台座（２５）と、前記第２の台座（２５）に同軸に具備させた第１と第２の転輪（２６・２７）と、前記第１の転輪（２６）の中央部に具備させた雌ねじ部材（２９）と、前記第２の転輪（２７）の中央部に具備され、前記第１の転輪（２６）の雌ねじ部材（２９）に螺合させた第１の雄ねじ部材（２９）とその先端に同軸に連設され前記第２の台座（２５）の外側に突出している第２の雄ねじ部材（３０）とからなる二段雄ねじ（２９・３０）と、を有し、
前記球継手部（４）の第１の台座（１７）は前記据え部に対して結合位置を変更可能に、かつ結合・分離自在に構成され、
前記物品取付部（３）は、前記球継手部（４）の前記第２の台座（２５）から外側に突出している第２の雄ねじ部材（３０）と螺合して前記第２の台座（２５）に結合・分離自在に取り付けられる第１部材（９）と、前記物品（１００）に結合・分離自在に構成され、かつ前記第１部材（９）に結合・分離自在に取り付けられる第２部材（８）からなる
ことを特徴とする架台。
【００１３】
<作用>
据え部は架台が天吊り架台として使用される場合には天井側の不動部材に対してボルト等の定着具により固定して取付ける。或いは机面上や床面上等に据え置く。さらにはボルト等の定着具により固定して取付ける。
【００１４】
物品取付部には物品を直接に或いは他物を介して取付ける。
【００１５】
そして、据え部と物品取付部は自在継手部で連結してあるから、物品取付部に保持させた物品は物品取付部を自在継手部により据え部に対して傾動操作・回転操作することで容易に所望の支持姿勢状態に全方位的に調節することができ、調節したら継手ロック手段で自在継手部の動きを固定化することで、その調節した物品支持姿勢状態が安定に保持される。
【００１６】
【発明の実施の形態】
本実施の形態例は、図１のように、天井Ａに液晶ビデオプロジェクター１００を支持姿勢調節可能に吊り下げて設置するための天吊り架台として本発明に従う架台１を使用した例である。
【００１７】
Ｃは壁面Ｂに吊り下げた投影スクリーンである。この投影スクリーンＣに対して液晶ビデオプロジェクター１００による映像投影が適切となるように架台１を調整することで液晶ビデオプロジェクター１００の支持姿勢を調節し、その調節した支持姿勢を固定化する。
【００１８】
図２は架台１の正面図、図３は側面図、図４は自在継手部の縦断面図である。２は据え部、３は物品取付部、４は据え部２と物品取付部３とを連結させた自在継手部である。本例ではこの自在継手部４は球継手である。
【００１９】
ａ）据え部２
図５は据え部２の斜視図である。この据え部２は鉄板を折り曲げ加工した略三角形状のトレー形部材であり、三角形の頂角部に対応する部分にはそれぞれ外向き水平の張り出しタグ部５を具備させ、その各タグ部５にボルト挿通穴６を形成してある。また据え部２の中央面部分には左右方向を長手とする長穴７を形成してある。
【００２０】
ｂ）物品取付部３
図６は物品取付部３の分解斜視図である。この物品取付部３は、鉄板を折り曲げ加工した長方形の外枠板８と、この外枠板３の内側中央部に嵌まる、同じく鉄板を折り曲げ加工した長方形の内側プレート部材９を有する。この内側プレート部材９の中央面部分にはねじ挿通穴１０を形成してあり、内側プレート部材９の内面側にはねじ挿通穴１０に対応位置させてナット１１を溶接して配設してある。
【００２１】
上記の物品取付部３の外枠板８と内側プレート部材９は、外枠板８の内側中央部に内側プレート部材９を嵌め入れ、外枠板８の前側壁と後側壁にそれぞれ２個ずつ具備させたねじ挿通穴１２に、内側プレート部材９の前側壁と後側壁にそれぞれ２個ずつ具備させたねじ穴１３を対応させ、各ねじ挿通穴１２から各ねじ穴１３にビス１４をねじ込むことで一体化される。
【００２２】
ｃ）球継手４
自在継手である球継手４に関して、主として図４を参照して、１７は第１の台座、１８はこの台座１７の中央部にモールドで具備させた雌ねじ部材、１９と２０は前後二つ割の抱球部材、２１はこの前後二つ割の抱球部材１９・２０を連結させた横ねじ棒、２２は横ねじ棒２１の回動操作レバー（継手ロック・解除レバー）、２３は前後二つ割の抱球部材１９・２０の間に抱持させた球体である。
【００２３】
第１の台座１７は円台座であり、その周面には円周溝を形成してあり、この円周溝に前後二つ割の抱球部材１９・２０の内側に具備させた円周方向の円弧凸条部を嵌係合させていることで第１の台座１７に対して前後二つ割の抱球部材１９・２０が外れ止めされる。
【００２４】
２５は球体２３に首部２４を介して連設した第２の台座である。この第２の台座２５には第１と第２の転輪２６と２７を同軸に具備させてある。第１の転輪２６には中央部に雌ねじ部材２８をモールドして具備させてある。第２の転輪２７には中央部に、第１の雄ねじ部２９とその先端部に同軸に連設した第２の雄ねじ部３０を有する二段雄ねじを具備させてある。この二段雄ねじの第１の雄ねじ部２９を第１の転輪２６の雌ねじ部材２８に螺合させて、この雌ねじ部材２８から突出した第１の雄ねじ部２９部分を第２の台座２５に設けた受孔３１に嵌入させてある。二段雄ねじの第２の雄ねじ部３０は受孔３１から第２の台座２５の外側に突出している。３２は転輪抑えばねである。
【００２５】
上記球継手４の第１の台座１７に対して据え部２が、ボルト３３を据え部２の長穴７を通して第１の台座１７側の雌ねじ部材１８に螺合させて緊締することで取付られる。
【００２６】
また、第２の台座２５に対して物品取付部３が、内側プレート部材９の中央面部分のねじ挿通穴１０に上記二段雄ねじの第２の雄ねじ部３０を対応させて挿入し、第２の転輪２７を回し操作して内側プレート部材９側のナット１１に螺合させて緊締することで取付られる。また第１の転輪２６を回し操作して弛み止めする。
【００２７】
前後二つ割の抱球部材１９・２０を連結させた横ねじ棒２２の回動操作レバー２２の回し操作により、球継手の動きをロック（固定化）したり、ロック解除したりすることができる。
【００２８】
即ち、図２においてレバー２２を実線示の垂直姿勢まで時計方向に回動操作することで、前後二つ割の抱球部材１９・２０が横ねじ棒２１で互いに引き寄せ移動されて球体２３が前後二つ割の抱球部材１９・２０の間にきつく挟み込まれて回転阻止の状態で抱持され、球継手の動きがきつくロックされた状態に保持される。
【００２９】
逆に、レバー２２を２点鎖線示のように反時計方向に回動操作することで、前後二つ割の抱球部材１９・２０が横ねじ棒２１で互いに離間移動されて球体２３のきつい挟み込による回転阻止が解除されてロック解除状態になる。このロック解除状態においては、物品取付部３を球継手部４により据え部２に対して傾動操作・回転操作することで容易に所望の支持姿勢状態に全方位的に調節することができ、調節したらレバー２２を継手ロック方向に回動操作して球継手部４の動きを固定化することで、その調節した物品取付部３の姿勢状態が安定に保持される。
【００３０】
ｄ）設置要領
図７は上記の架台１を天吊り架台として用いて天井Ａに液晶ビデオプロジェクター１００を支持姿勢調節可能に吊り下げて設置した状態の正面図である。図８はその側面図である。１０１は液晶ビデオプロジェクター１００の投影鏡筒部である。
【００３１】
天井Ａは本例の場合は液晶ビデオプロジェクター１００と天吊り架台１の重量を十分に支持し得る強度を有しているコンクリート天井である。天井Ａの下面の液晶ビデオプロジェクター１００を設置すべき部分には、予め、架台１の略三角形状の据え部２の３つのタグ部５にそれぞれ設けたボルト挿通穴６に対応する位置関係に都合３つのアンカーナット３５を植え込んで設けてある。
【００３２】
この天井Ａ側の３つのアンカーナット３５にそれぞれ架台１側の据え部２の
３つのタグ部５のボルト挿通穴６を対応位置させて据え部２を天井下面にあてがい、各ボルト挿通穴６にボルト３４を差し込んでアンカーナット３５に螺合してしっつかりと締め付ける。これにより天井下面に対して架台１が取付けられる。
【００３３】
架台１の物品取付部３は球継手４の第２の台座２５から取り外しておき、さらには全てのビス１４を外して外枠板８と内側プレート部材９とを分離する。内側プレート部材９を外した外枠板８を天吊り物品である液晶ビデオプロジェクター１００の上面板面に対してしっかりとビス止めして取付ける。
【００３４】
図６において、１６は外枠板８を液晶ビデオプロジェクター１００の上面板面に取付ける都合３本のビスである。１５は外枠板８側に設けた３つのビス挿入穴である。外枠板８側の３つのビス挿入穴１５をそれぞれ液晶ビデオプロジェクター１００の上面板側に位置対応させて設けてあるねじ穴（不図示）に一致させて外枠板８を液晶ビデオプロジェクター１００の上面板面にあてがい、各ビス挿入穴１５にビス１４を差し込んで液晶ビデオプロジェクター１００の上面板側のねじ穴に螺合してしっつかりと締め付ける。しかる後、内側プレート部材９を再び外枠板８に嵌め入れ、元のようにビス１４で外枠板８に止め直す。これにより液晶ビデオプロジェクター１００の上面板に物品取付部３が取付けられる。
【００３５】
この液晶ビデオプロジェクター１００を持ち上げて、既に天井Ａの下面に取付けてある架台１の球継手４の第２の台座２５に対して、液晶ビデオプロジェクター１００に取付けた物品取付部３を取付ける。その取付は物品取付部３の内側プレート部材９の中央面部分のねじ挿通穴１０に第２の台座２５側の二段雄ねじの第２の雄ねじ部３０を対応させて挿入し、第２の転輪２７を回し操作して内側プレート部材９側のナット１１に螺合させて緊締することで取付られる。また第１の転輪２６を回し操作して弛み止めをする。
【００３６】
これにより液晶ビデオプロジェクター１００が天井Ａに対して天吊り架台１を介して吊り下げられて設置される。
【００３７】
液晶ビデオプロジェクター１００を持ち上げて、既に天井Ａの下面に取付けてある架台１の球継手４の第２の台座２５に対して、液晶ビデオプロジェクター１００に取付けた物品取付部３を結合させて液晶ビデオプロジェクター１００を天井Ａに天吊り架台１を介して吊り下げた状態にする作業は、物品取付部３側のねじ挿通穴１０に第２の台座２５側の二段雄ねじの第２の雄ねじ部３０を対応させて挿入し、第２の転輪２７を回し操作して内側プレート部材９側のナット１１に螺合させて緊締し、第１の転輪２６を回し操作して弛み止めをするだけの簡単な操作であり、液晶ビデオプロジェクター１００を持ち上げている時間は短時間で済み、作業は楽である。
【００３８】
そして、継手ロック解除状態において、物品取付部３に取付た液晶ビデオプロジェクター１００は物品取付部３を球継手部４により据え部２に対して傾動操作・回転操作することで容易に所望の支持姿勢状態に調節することができ、調節したら継手ロック手段２２で球継手部４の動きを固定化することで、その調節した液晶ビデオプロジェクター１００の支持姿勢状態が安定に保持される。
【００３９】
即ち、液晶ビデオプロジェクター１００は自在継手である球継手部４により任意の平面内で回転または傾斜させて全方位的に支持姿勢を調節することができ、またその調節した支持姿勢状態をロック手段でロックして安定に保持させることができる。
【００４０】
また、本例の場合は据え部２に設けた左右方向の長穴７の長さ範囲において据え部２に対して球継手部４の取付位置をずらすことで液晶ビデオプロジェクター１００の左右位置も調節することができる。
【００４１】
なお、天井Ａに対する天吊り架台１と液晶ビデオプロジェクター１００の取付手順は上記に限られるものではない。
【００４２】
また、図９の例のように据え部２と球継手部４との間に例えばターンバックル３６を具備させることで、液晶ビデオプロジェクター１００の上下位置も調節可能にすることもできる。
【００４３】
据え部２は上述例のような形態のものに限らず、任意の形態のものにすることができ、天井等に対する取付形態も任意の形態のものにすることができる。
【００４４】
物品取付部３も上述例のような形態のものに限らず、任意の形態のものにすることができ、物品の取付形態も任意の形態のものにすることができる。
【００４５】
自在継手部４は上述例のような球継手に限られないことは勿論である。
【００４６】
本発明の架台１は上述例の天吊り架台１としての使用に限られるものではない。例えば、図１０のように、机等の台Ｄ上や床Ｆ上に架台１の据え部２を据え置く、さらにはボルト等の定着具により固定して架台１を取付け、上向きの物品取付部３に液晶ビデオプロジェクター１００を取付、その支持姿勢を自在継手である球継手部４により調節し、その調節した支持姿勢状態をロック手段でロックして安定に保持させることができる（テーブルトップタイプ）。
【００４７】
また、架台１の物品取付部３に支持させる物品は上述例の液晶ビデオプロジェクター１００やその他の投影装置に限られるものではなく、任意であることは勿論である。例えばテレビジョン・ディスプレイ装置・監視カメラなどであってもよい。図１１は巻き込みタイプのスクリーン装置２００を天吊り設置した例を示している。
【００４８】
【発明の効果】
以上詳述したように本発明によれば、物品を支持姿勢調節可能に設置する架台として、構造的に単純で、低コストに量産することが可能で、容易に所望の支持姿勢状態に調節することができ、調節したら継手ロック手段で自在継手部の動きを固定化することで、その調節した物品支持姿勢状態を安定に保持させることができる、簡便で安価な架台を提供することができる。
【図面の簡単な説明】
【図１】液晶ビデオプロジェクターを架台を介して天吊り設置した状態を示す図
【図２】架台の正面図
【図３】その側面図
【図４】球継手の縦断面図
【図５】据え部の斜視図
【図６】物品取付部の分解斜視図
【図７】液晶ビデオプロジェクターを天吊り設置した状態の正面図
【図８】その側面図
【図９】ターンバックルを具備させた架台の側面図
【図１０】その他の設置形態例の図
【図１１】スクリーンを架台を介して天吊り設置した状態を示す図
【符号の説明】
１・・架台、２・・据え部、３・・物品取付部、４・・自在継手部（球継手部）、５・・継手ロック・解除レバー、１００・・液晶ビデオプロジェクター、Ａ・・天井、Ｂ・・壁面、Ｃ・・スクリーン、Ｄ・・机等の台、Ｆ・・床[0001]
[Technical field to which the invention belongs]
The present invention relates to a gantry on which an article is installed so that the support posture can be adjusted.
[0002]
[Prior art]
For example, in the case of a system in which a projection device (liquid crystal video projector, 3-tube video projector, projector, phantom lamp, etc.) is installed suspended from the ceiling and the image is projected onto the screen surface installed on the wall surface etc., the projection device is the ceiling It is installed so that the supporting posture can be adjusted with respect to the stationary member on the side via a ceiling mount (for example, JP-A-9-185125).
[0003]
[Problems to be solved by the invention]
For example, a three-tube video projector or the like has a heavy weight of 50 to 60 kg. Therefore, a conventional ceiling mount can sufficiently support such a heavy load, and the position and posture of a projection device installed in a suspended manner. It is necessary to be able to make adjustments as necessary, and it is necessary to be able to stably maintain the adjustment state. Generally, the structure is large, has a complicated structure with a large number of parts, and is often troublesome to install and adjust.
[0004]
Recently, for example, liquid crystal video projectors have been reduced in size and weight, and light-weight products having a weight of about 3 to 5 kg have appeared. Therefore, there is a demand for a simpler and cheaper ceiling mount.
[0005]
The present invention meets this need.
[0006]
[Means for Solving the Problems]
The present invention is a gantry characterized by the following structure.
[0012]
A portion laid fixedly attached by a fixing member (34) relative to the non-moving member (A) (2), the article mounting unit for mounting an article (100) and (3), said seated portion (2) article A ball joint portion (4) connected to the attachment portion (3),
The ball joint portion (4) includes a first pedestal (17), a split ball member (19, 20) movably engaged with the first pedestal (17), and the two The ball (23) held between the split ball holding members (19, 20) and the split ball holding member (19, 20) are connected to each other in the tightening direction by the rotation operation lever (22). By rotating, the split ball-bearing member (19, 20) is tightened with the sphere (23) sandwiched therebetween to fix the movement of the sphere (23), and is rotated in the loosening direction. A lateral screw rod (21) that loosens the tension of the split ball-bearing member (19, 20) to freely move the sphere (23), and the sphere (23) are connected to each other via the neck (24). A second pedestal (25), first and second wheels (26, 27) coaxially provided on the second pedestal (25), and the first wheel (2 ) And a female screw member (29) provided in the central portion of the second rolling wheel (27) and screwed into the female screw member (29) of the first rolling wheel (26). A two-stage male screw (29.30) comprising a first male screw member (29) and a second male screw member (30) coaxially connected to the tip of the first male screw member (29) and projecting to the outside of the second pedestal (25). ) And
The first pedestal (17) of the ball joint portion (4) is configured to be able to change the coupling position with respect to the mounting portion, and to be coupled and separated,
The article attachment portion (3) is screwed into a second male screw member (30) projecting outward from the second pedestal (25) of the ball joint portion (4), and the second pedestal ( 25) a first member (9) attached to be separable and separable, and a second member configured to be separable from the article (100) and separably attached to the first member (9) . A gantry comprising the member (8).
[0013]
<Operation>
When the mount is used as a ceiling mount, the mounting portion is fixed to a fixed member on the ceiling side by a fixing tool such as a bolt. Or leave it on a desk or floor. Furthermore, it is fixed by a fixing tool such as a bolt.
[0014]
An article is attached to the article attachment portion directly or via another object.
[0015]
Since the stationary part and the article attaching part are connected by a universal joint part, the article held by the article attaching part can be easily operated by tilting and rotating the article attaching part with respect to the stationary part by the universal joint part. It is possible to adjust to the desired support posture state in all directions, and when adjusted, the movement of the universal joint portion is fixed by the joint lock means, so that the adjusted article support posture state is stably maintained.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, the present embodiment is an example in which the gantry 1 according to the present invention is used as a ceiling gantry for suspending and installing the liquid crystal video projector 100 on the ceiling A so that the supporting posture can be adjusted.
[0017]
C is a projection screen suspended from the wall surface B. The support posture of the liquid crystal video projector 100 is adjusted by adjusting the gantry 1 so that the image projection by the liquid crystal video projector 100 is appropriate for the projection screen C, and the adjusted support posture is fixed.
[0018]
2 is a front view of the gantry 1, FIG. 3 is a side view, and FIG. 4 is a longitudinal sectional view of the universal joint. Reference numeral 2 is a stationary part, 3 is an article attaching part, and 4 is a universal joint part in which the stationary part 2 and the article attaching part 3 are connected. In this example, the universal joint portion 4 is a ball joint.
[0019]
a) Mounting part 2
FIG. 5 is a perspective view of the mounting part 2. The mounting portion 2 is a substantially triangular tray-shaped member obtained by bending an iron plate. Each portion corresponding to the apex portion of the triangle is provided with an outward horizontal protruding tag portion 5, Bolt insertion holes 6 are formed. Further, a long hole 7 having a longitudinal direction in the left-right direction is formed in the central surface portion of the mounting portion 2.
[0020]
b) Article attachment part 3
FIG. 6 is an exploded perspective view of the article mounting portion 3. The article mounting portion 3 includes a rectangular outer frame plate 8 obtained by bending an iron plate, and a rectangular inner plate member 9 that is fitted to the inner central portion of the outer frame plate 3 and is also formed by bending the iron plate. A screw insertion hole 10 is formed in a central surface portion of the inner plate member 9, and a nut 11 is welded to the inner surface side of the inner plate member 9 so as to correspond to the screw insertion hole 10. .
[0021]
The outer frame plate 8 and the inner plate member 9 of the article mounting portion 3 are fitted into the inner central portion of the outer frame plate 8, and two each on the front side wall and the rear side wall of the outer frame plate 8. The screw insertion holes 12 provided are respectively provided with two screw holes 13 provided on the front side wall and the rear side wall of the inner plate member 9, and screws 14 are screwed into the screw holes 13 from the screw insertion holes 12. Is integrated.
[0022]
c) Ball joint 4
With respect to the ball joint 4 which is a universal joint, mainly referring to FIG. 4, 17 is a first pedestal, 18 is a female screw member provided in the center of the pedestal 17 with a mold, and 19 and 20 are front and rear halves. A ball-bearing member, 21 is a horizontal screw rod connecting the front and rear ball-bearing members 19 and 20, 22 is a turning lever (joint lock / release lever) of the horizontal screw rod 21, and 23 is two front and rear. A spherical body held between the split ball-bearing members 19 and 20.
[0023]
The first pedestal 17 is a circular pedestal, and a circumferential groove is formed on the circumferential surface thereof, and the circumferential direction provided in the circumferential groove on the inner side of the front and rear split ball bearing members 19 and 20. By fitting and engaging the arc ridges, the front and rear halved ball bearing members 19 and 20 are prevented from coming off with respect to the first pedestal 17.
[0024]
Reference numeral 25 denotes a second pedestal connected to the sphere 23 via the neck 24. The second pedestal 25 is provided with first and second wheels 26 and 27 coaxially. The first roller 26 is provided with a female screw member 28 molded at the center. The second roller 27 is provided with a two-stage male screw having a first male screw portion 29 and a second male screw portion 30 provided coaxially at the tip thereof at the center thereof. The first male screw portion 29 of the two-stage male screw is screwed into the female screw member 28 of the first roller 26, and the first male screw portion 29 portion protruding from the female screw member 28 is provided on the second base 25. It is inserted into the receiving hole 31. The second male screw portion 30 of the two-stage male screw protrudes from the receiving hole 31 to the outside of the second pedestal 25. Reference numeral 32 denotes a wheel holding spring.
[0025]
The mounting portion 2 is attached to the first pedestal 17 of the ball joint 4 by screwing the bolt 33 into the female screw member 18 on the first pedestal 17 side through the elongated hole 7 of the mounting portion 2 and tightening. .
[0026]
Further, the article mounting portion 3 inserts the second male screw portion 30 of the two-stage male screw into the screw insertion hole 10 in the central surface portion of the inner plate member 9 so as to correspond to the second pedestal 25, and the second The roller 27 is turned and screwed into the nut 11 on the inner plate member 9 side to be tightened. Further, the first roller 26 is turned to stop loosening.
[0027]
The movement of the ball joint can be locked (fixed) or unlocked by turning the turning operation lever 22 of the horizontal screw rod 22 to which the front and rear split ball bearing members 19, 20 are connected. it can.
[0028]
That is, when the lever 22 is rotated clockwise to the vertical posture shown in FIG. 2, the front and rear split ball bearing members 19, 20 are moved toward each other by the horizontal screw rods 21, and the sphere 23 is moved back and forth. The ball joint members 19 and 20 of the split halves are tightly sandwiched and are held in a rotation-prevented state, and the movement of the ball joint is held in a tightly locked state.
[0029]
On the contrary, when the lever 22 is turned counterclockwise as indicated by a two-dot chain line, the front and rear halved ball bearing members 19 and 20 are moved away from each other by the horizontal screw rod 21, and the sphere 23 is tight. The rotation prevention by the pinching is released and the lock is released. In this unlocked state, the article mounting portion 3 can be easily adjusted omnidirectionally to a desired support posture state by tilting / rotating the mounting portion 2 with respect to the mounting portion 2 by the ball joint portion 4. Then, the lever 22 is rotated in the joint locking direction to fix the movement of the ball joint portion 4 so that the adjusted posture state of the article attachment portion 3 is stably maintained.
[0030]
d) Installation procedure
FIG. 7 is a front view of a state in which the liquid crystal video projector 100 is suspended and installed on the ceiling A so that the supporting posture can be adjusted, using the above-described frame 1 as a ceiling suspension frame. FIG. 8 is a side view thereof. Reference numeral 101 denotes a projection barrel of the liquid crystal video projector 100.
[0031]
In this example, the ceiling A is a concrete ceiling having a strength capable of sufficiently supporting the weight of the liquid crystal video projector 100 and the ceiling mount 1. The portion where the liquid crystal video projector 100 on the lower surface of the ceiling A is to be installed is convenient for the positional relationship corresponding to the bolt insertion holes 6 provided in the three tag portions 5 of the substantially triangular mounting portion 2 of the gantry 1 in advance. Three anchor nuts 35 are implanted.
[0032]
The bolt insertion holes 6 of the three tag parts 5 of the installation part 2 on the gantry 1 side are respectively positioned corresponding to the three anchor nuts 35 on the ceiling A side, and the installation part 2 is applied to the lower surface of the ceiling. The bolt 34 is inserted and screwed into the anchor nut 35 and tightened firmly. Thereby, the mount frame 1 is attached to the ceiling lower surface.
[0033]
The article mounting portion 3 of the gantry 1 is removed from the second pedestal 25 of the ball joint 4, and all the screws 14 are removed to separate the outer frame plate 8 and the inner plate member 9. The outer frame plate 8 from which the inner plate member 9 is removed is attached to the upper surface plate surface of the liquid crystal video projector 100, which is a ceiling-suspended article, by screwing firmly.
[0034]
In FIG. 6, reference numeral 16 denotes three convenient screws for attaching the outer frame plate 8 to the upper surface plate surface of the liquid crystal video projector 100. Reference numeral 15 denotes three screw insertion holes provided on the outer frame plate 8 side. The three frame insertion holes 15 on the outer frame plate 8 side are respectively aligned with screw holes (not shown) provided so as to correspond to the upper surface plate side of the liquid crystal video projector 100, so that the outer frame plate 8 is aligned with the liquid crystal video projector 100. The screw 14 is inserted into each screw insertion hole 15 and is screwed into the screw hole on the upper surface plate side of the liquid crystal video projector 100 and tightened firmly. Thereafter, the inner plate member 9 is fitted into the outer frame plate 8 again, and is fixed to the outer frame plate 8 with the screws 14 as before. As a result, the article attachment portion 3 is attached to the upper surface plate of the liquid crystal video projector 100.
[0035]
The liquid crystal video projector 100 is lifted, and the article attachment portion 3 attached to the liquid crystal video projector 100 is attached to the second pedestal 25 of the ball joint 4 of the gantry 1 already attached to the lower surface of the ceiling A. The attachment is performed by inserting the second male screw portion 30 of the two-stage male screw on the second pedestal 25 side into the screw insertion hole 10 in the central surface portion of the inner plate member 9 of the article attachment portion 3 so as to correspond to the second rolling member. It is attached by rotating the ring 27 and screwing it into the nut 11 on the inner plate member 9 side and tightening it. Further, the first roller 26 is turned to prevent loosening.
[0036]
As a result, the liquid crystal video projector 100 is suspended from the ceiling A via the ceiling mount 1 and installed.
[0037]
The liquid crystal video projector 100 is lifted, and the article mounting portion 3 attached to the liquid crystal video projector 100 is coupled to the second pedestal 25 of the ball joint 4 of the gantry 1 that is already attached to the lower surface of the ceiling A. The operation of bringing the projector 100 into the state suspended from the ceiling A via the ceiling mount 1 includes the second male screw portion 30 of the two-stage male screw on the second pedestal 25 side in the screw insertion hole 10 on the article mounting portion 3 side. Are inserted in correspondence with each other, and the second wheel 27 is turned to be screwed into the nut 11 on the inner plate member 9 side and tightened, and the first wheel 26 is turned to operate to prevent loosening. The time required for lifting the liquid crystal video projector 100 is short, and the work is easy.
[0038]
In the joint unlocked state, the liquid crystal video projector 100 attached to the article attachment portion 3 can easily perform a desired support posture by tilting and rotating the article attachment portion 3 with respect to the mounting portion 2 by the ball joint portion 4. When the adjustment is made, the movement of the ball joint portion 4 is fixed by the joint lock means 22, so that the adjusted support posture state of the liquid crystal video projector 100 is stably maintained.
[0039]
In other words, the liquid crystal video projector 100 can adjust the support posture in all directions by rotating or tilting in an arbitrary plane by the ball joint portion 4 which is a universal joint, and the adjusted support posture state can be adjusted by the lock means. It can be locked and held stably.
[0040]
In the case of this example, the horizontal position of the liquid crystal video projector 100 is also adjusted by shifting the mounting position of the ball joint portion 4 with respect to the mounting portion 2 in the length range of the elongated hole 7 provided in the horizontal direction in the mounting portion 2. can do.
[0041]
Note that the procedure for attaching the ceiling mount 1 and the liquid crystal video projector 100 to the ceiling A is not limited to the above.
[0042]
Further, as shown in the example of FIG. 9, for example, a turnbuckle 36 is provided between the mounting portion 2 and the ball joint portion 4, so that the vertical position of the liquid crystal video projector 100 can be adjusted.
[0043]
The mounting part 2 is not limited to the form as in the above-described example, and can be of any form, and the form of attachment to the ceiling or the like can be of any form.
[0044]
The article attachment portion 3 is not limited to the form as in the above-described example, but can be any form, and the article attachment form can be any form.
[0045]
Of course, the universal joint portion 4 is not limited to the ball joint as in the above-described example.
[0046]
The gantry 1 of the present invention is not limited to use as the ceiling gantry 1 of the above-described example. For example, as shown in FIG. 10, the mounting part 2 of the gantry 1 is placed on a table D such as a desk or on the floor F, and is further fixed by a fixing tool such as a bolt to mount the gantry 1, and the upward article mounting part 3 The liquid crystal video projector 100 can be attached to the liquid crystal video projector 100, and the support posture thereof can be adjusted by the ball joint portion 4 which is a universal joint, and the adjusted support posture state can be locked by the locking means and stably held (table top type).
[0047]
Further, the articles supported by the article mounting portion 3 of the gantry 1 are not limited to the liquid crystal video projector 100 and other projection apparatuses of the above-described example, and are of course arbitrary. For example, it may be a television, a display device, a surveillance camera, or the like. FIG. 11 shows an example in which the entrainment type screen device 200 is suspended from the ceiling.
[0048]
【The invention's effect】
As described above in detail, according to the present invention, as a pedestal for installing an article so that the support posture can be adjusted, it is structurally simple, can be mass-produced at low cost, and is easily adjusted to a desired support posture state. After the adjustment, the movement of the universal joint portion is fixed by the joint locking means, thereby providing a simple and inexpensive gantry capable of stably holding the adjusted article supporting posture state.
[Brief description of the drawings]
[Fig. 1] Diagram showing a state where a liquid crystal video projector is suspended from a stand [Fig. 2] Front view of the stand [Fig. 3] Side view thereof [Fig. 4] Vertical cross-sectional view of a ball joint [Fig. FIG. 6 is an exploded perspective view of the article mounting portion. FIG. 7 is a front view of the liquid crystal video projector suspended from the ceiling. FIG. 8 is a side view of the mount. Side view [Fig. 10] Illustration of other installation forms [Fig. 11] Diagram showing the screen suspended from the screen via a frame [Explanation of symbols]
1 .... Stand, 2 .... Mounting part, 3 .... Mounting part, 4 .... Joint joint (ball joint part), 5 .... Joint lock / release lever, 100 ... Liquid crystal video projector, A ... Ceiling , B ... Wall, C ... Screen, D ... Desk, etc., F ... Floor

Claims

A stationary part (2) fixedly attached to the immovable member (A) by a fixing tool (34), an article attaching part (3) for attaching the article (100), the stationary part (2) and the article attaching A ball joint portion (4) connected to the portion (3),
The ball joint portion (4) includes a first pedestal (17), a split ball member (19, 20) movably engaged with the first pedestal (17), and the two The ball (23) held between the split ball holding members (19, 20) and the split ball holding member (19, 20) are connected to each other in the tightening direction by the rotation operation lever (22). By rotating, the split ball-bearing member (19, 20) is tightened with the sphere (23) sandwiched therebetween to fix the movement of the sphere (23), and is rotated in the loosening direction. A lateral screw rod (21) that loosens the tension of the split ball-bearing member (19, 20) to freely move the sphere (23), and the sphere (23) are connected to each other via the neck (24). A second pedestal (25), first and second wheels (26, 27) coaxially provided on the second pedestal (25), and the first wheel (2 ) And a female screw member (29) provided in the central portion of the second rolling wheel (27) and screwed into the female screw member (29) of the first rolling wheel (26). A two-stage male screw (29.30) comprising a first male screw member (29) and a second male screw member (30) coaxially connected to the tip of the first male screw member (29) and projecting to the outside of the second pedestal (25). ) And
The first pedestal (17) of the ball joint portion (4) is configured to be able to change the coupling position with respect to the mounting portion, and to be coupled and separated,
The article attachment portion (3) is screwed into a second male screw member (30) projecting outward from the second pedestal (25) of the ball joint portion (4), and the second pedestal ( 25) a first member (9) attached to be separable and separable, and a second member configured to be separable from the article (100) and separably attached to the first member (9) . A gantry comprising the member (8).