JPH0212649Y2 - - Google Patents

Description

【考案の詳細な説明】 この考案は高天井照明器具等に適用される照明
器具の昇降装置に関するものである。[Detailed Description of the Invention] This invention relates to a lighting equipment lifting device applied to high ceiling lighting equipment and the like.

固定部に対して昇降動作する昇降部を２本のワ
イヤにより吊持すると、１本の場合よりも昇降部
の上死点での回転方向の位置が一定となりやすい
が、昇降部が下降した位置にあるときは回転しや
すくて、２本のワイヤが相互にからまることがあ
る。しかし、からみ合つたまま上昇するとワイヤ
の切断が昇降部の破損などの危険が生じるため、
そのからみを戻す必要がある。通常からみ合つた
場合でも、ワイヤに反発力が働くため上昇過程で
自然にからみが解けるが、１本のワイヤ自身にね
じれがあるとその反発力の抵抗となつて元に戻り
にくくなり、ねじれたまま上昇してしまうことが
ある。 If the lifting part that moves up and down with respect to the fixed part is suspended by two wires, the position in the rotational direction at the top dead center of the lifting part will be more likely to be constant than in the case of one wire, but the position when the lifting part is lowered When it is in the position, it is easy to rotate and the two wires may get tangled with each other. However, if the wires are tangled when ascending, there is a danger that the wires may break and cause damage to the elevating section.
We need to get that relationship back together. Normally, even if the wires are entangled, a repulsive force acts on the wires, so they will naturally untangle as they rise, but if one wire itself is twisted, it will resist that repulsive force, making it difficult to return to its original state, and the twisted wire will become untangled. It may rise even higher.

したがつて、考案の目的は、ワイヤ相互のから
みを戻しやすくしかも構造が簡単な照明器具の昇
降装置を提供することである。 Therefore, it is an object of the present invention to provide a lifting device for a lighting device that is easy to untangle wires and has a simple structure.

この考案の一実施例を適用した高天井昇降式照
明器具を第１図および第２図に示す。すなわち、
この照明器具は、天井１に取付けられた昇降装置
２の固定部３にドラム４およびガイドローラ５を
配設し、ワイヤ６をドラム４に巻いてガイドロー
ラ５に回し、ワイヤ６の自由端部７を固定部３の
下面３ａより垂下し、固定部３の所定位置に設け
た取付部８に回転自在に取付ける。この取付部８
は第２図のように、シヤーシ９上に軸受ボツクス
１０を取付け、軸受ボツクス１０にスラスト軸受
１１を設け、スラスト軸受１１にワイヤガイド筒
１２を嵌合し、軸受押え板１３でこれらを押える
とともに、前記ワイヤ６の自由端部７を軸受１１
およびガイド筒１２に通し、先端に圧着スリーブ
１４を固着して圧着スリーブ１４をガイド筒１２
に支持させる。ガイド筒１２は曲面をなす略円錐
形穴を中心に有し、軸受１１に嵌合状態に嵌合す
るとともに上面に係止することにより支持させて
いるので、ワイヤ６の自由端部７は回転自在とな
る。ワイヤ６の垂れ下り部６ａに昇降部１５の一
対の動滑車１６を掛け、昇降部１５に灯具１７を
取付けている。 A high ceiling elevating lighting fixture to which an embodiment of this invention is applied is shown in FIGS. 1 and 2. That is,
This lighting equipment has a drum 4 and a guide roller 5 arranged on a fixed part 3 of a lifting device 2 attached to a ceiling 1, a wire 6 is wound around the drum 4 and passed around the guide roller 5, and the free end of the wire 6 is 7 hangs down from the lower surface 3a of the fixed part 3 and is rotatably attached to a mounting part 8 provided at a predetermined position of the fixed part 3. This mounting part 8
As shown in FIG. 2, a bearing box 10 is mounted on the chassis 9, a thrust bearing 11 is provided in the bearing box 10, a wire guide cylinder 12 is fitted into the thrust bearing 11, and these are held down by a bearing holding plate 13. , the free end 7 of the wire 6 is attached to the bearing 11
and the guide tube 12, and the crimp sleeve 14 is fixed to the tip, and the crimp sleeve 14 is inserted into the guide tube 12.
to support. The guide cylinder 12 has a substantially conical hole with a curved surface at its center, and is fitted into the bearing 11 and supported by being locked to the upper surface, so that the free end 7 of the wire 6 cannot rotate. Become free. A pair of movable pulleys 16 of the elevating section 15 are hung over the hanging portion 6a of the wire 6, and a lamp 17 is attached to the elevating section 15.

ドラム４をモータで回転し、ワイヤ６を繰出す
と昇降部１５が降下し、ランプ交換等が行われ
る。モータを逆回転するとワイヤ６がドラム４に
巻取られ、昇降部１５が上昇を始める。これらの
降下状態において灯具１７が何らかの外力によつ
て回転すると第１図のようにワイヤ６が相互にか
らみＰを起す。このとき生じたワイヤ６自身のね
じれは自由端部７がスラスト軸受１１で支持され
ているためスラスト軸受１１が回転することによ
り解き戻され、１本のワイヤ独自のねじれのたま
りによるワイヤの耐久性の低下が防止される。同
時にワイヤ６相互のからみが昇降部の自重等の反
発力によつて元にもどろうとする際にワイヤ６の
ねじれが抵抗とならず、むしろワイヤ自身のねじ
れを吸収することによつて、これはあたかも一対
のローラが相互に回転しあうよう作用するので、
ワイヤ６の相互のからみからの復元を促進する。
その結果、１本のワイヤ自身のねじれのため生じ
る２本ワイヤ相互のからみの戻りの抵抗をなく
し、昇降部１５が上死点に上昇するまでにからみ
が元にもどりやすくすることができる。またから
みを生じたとき自由端部７が傾くが、ガイド筒１
２の曲面をなす略円錐形穴に支持されるので自由
端部７が傷付くおそれがない。 When the drum 4 is rotated by a motor and the wire 6 is fed out, the elevating section 15 is lowered to perform lamp replacement or the like. When the motor is rotated in the reverse direction, the wire 6 is wound around the drum 4, and the elevating section 15 begins to rise. When the lamp 17 is rotated by some external force in these lowered states, the wires 6 become entangled with each other as shown in FIG. Since the free end 7 of the wire 6 itself is supported by the thrust bearing 11, the twisting of the wire 6 itself that occurs at this time is unraveled by the rotation of the thrust bearing 11, and the durability of the wire is increased due to the accumulation of twists unique to one wire. This prevents a decrease in At the same time, when the mutual entanglement of the wires 6 tries to return to its original state due to the repulsive force such as the weight of the lifting section, the twisting of the wires 6 does not act as resistance, but rather the twisting of the wires themselves is absorbed. It acts as if a pair of rollers are rotating each other, so
This promotes recovery of the wires 6 from mutual entanglement.
As a result, it is possible to eliminate the resistance of the two wires to return from being entangled with each other due to the twisting of one wire itself, and to make it easier for the entanglement to return to its original state before the elevating section 15 rises to the top dead center. Also, when the free end 7 becomes tangled, the guide tube 1
Since the free end portion 7 is supported by the substantially conical hole having the curved surface 2, there is no risk of the free end portion 7 being damaged.

以上のように、この考案の照明器具の昇降装置
は、ドラムを有する固定部と、前記ドラムに巻設
された吊下索と、前記固定部に設けられたスラス
ト軸受と、この軸受の貫通孔に貫通状態に嵌合す
るとともに軸受の上面に係止しさらに中心に下側
が径大となりかつ曲面をなす略円錐形穴を有する
ガイド筒と、このガイド筒の下側から通された前
記吊下索の先端に固着されて前記ガイド筒の上面
に係止するスリーブと、前記吊下索の先端と前記
ドラムの間の部分に掛けられた動滑車をもつ照明
器具とを備えたため、吊下索の相互間でからみを
生じても容易に元にもどすことができ、危険を回
避できるとともに、吊下索の先端を前記をガイド
筒に支持させるので吊下索が傷つくおそれがな
い。しかもガイド筒が軸受に嵌合支持されている
ため別部品を必要とすることなく確実に取付るこ
とができ、また、ガイド筒を軸受内に貫通したた
め全長を長くすることなくガイド筒長を長くする
ことができるので軸受とのこすれを防止でき吊下
索の保護がより一層効果的になる。 As described above, the lifting device for lighting equipment of this invention includes a fixed part having a drum, a suspension cable wound around the drum, a thrust bearing provided in the fixed part, and a through hole of this bearing. a guide tube that fits through the guide tube and locks onto the upper surface of the bearing, and has a substantially conical hole with a curved surface and a larger diameter on the lower side at the center; The hanging cable is equipped with a sleeve that is fixed to the tip of the cable and latched to the upper surface of the guide cylinder, and a lighting device that has a movable pulley that is hung between the tip of the hanging cable and the drum. Even if entanglement occurs between the cables, it can be easily restored and danger can be avoided, and since the tip of the suspension cable is supported by the guide tube, there is no risk of damage to the suspension cable. Moreover, since the guide tube is fitted and supported by the bearing, it can be installed securely without the need for separate parts.In addition, since the guide tube passes through the bearing, the length of the guide tube can be increased without increasing the overall length. This prevents friction with the bearing, making the protection of the suspension cable even more effective.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の一実施例の正面図、第２図
はそのワイヤの自由端部の断面図である。 ３……固定部、４……ドラム、６……ワイヤ
（吊下索）、７……自由端部、８……取付部、１１
……スラスト軸受、１２……ガイド筒、１４……
圧着スリーブ、１５……昇降部、１６……動滑
車、２１……すべり軸受。 FIG. 1 is a front view of an embodiment of the invention, and FIG. 2 is a sectional view of the free end of the wire. 3...Fixed part, 4...Drum, 6...Wire (hanging cable), 7...Free end part, 8...Mounting part, 11
... Thrust bearing, 12 ... Guide cylinder, 14 ...
Crimp sleeve, 15... Lifting section, 16... Moving pulley, 21... Slide bearing.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ドラムを有する固定部と、前記ドラムに巻設さ
れた吊下索と、前記固定部に設けられたスラスト
軸受と、この軸受の貫通孔に貫通状態に嵌合する
とともに軸受の上面に係止しさらに中心に下側が
径大となりかつ曲面をなす略円錐形穴を有するガ
イド筒と、このガイド筒の下側から通された前記
吊下索の先端に固着されて前記ガイド筒の上面に
係止するスリーブと、前記吊下索の先端と前記ド
ラムの間の部分に掛けられた動滑車をもつ照明器
具とを備えた照明器具の昇降装置。 A fixed part having a drum, a hanging rope wound around the drum, a thrust bearing provided on the fixed part, and a thrust bearing that is fitted into a through hole of the bearing and is latched to the upper surface of the bearing. Further, there is a guide tube having a substantially conical hole with a curved surface and a larger diameter on the lower side in the center, and is fixed to the tip of the hanging cable passed from the bottom of this guide tube and is locked to the upper surface of the guide tube. A lifting device for a lighting equipment, comprising: a sleeve for lifting the hanging cable; and a lighting equipment having a movable pulley hung between the tip of the hanging rope and the drum.