JP3682074B2 - lift device - Google Patents

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Publication number
JP3682074B2
JP3682074B2 JP07899694A JP7899694A JP3682074B2 JP 3682074 B2 JP3682074 B2 JP 3682074B2 JP 07899694 A JP07899694 A JP 07899694A JP 7899694 A JP7899694 A JP 7899694A JP 3682074 B2 JP3682074 B2 JP 3682074B2
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drum
winding
pulleys
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lifting device
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JPH07288026A (en
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宏樹 中尾
功治 植岡
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Description

【０００１】
【産業上の利用分野】
本発明は、被吊り下げ物を昇降自在にするための昇降装置に関するものである。
【０００２】
【従来の技術】
従来から照明器具のような被吊り下げ物を昇降させるための昇降装置としては、図６、図７に示すように、１個のドラム１に１本のワイヤ２を巻取り自在とし、該１本のワイヤ２を滑車Ａにより１８０°方向を変え、次に滑車Ｂにより９０°方向を変え下に伸ばし、次に被吊り下げ物に設けた滑車Ｃ、滑車Ｄによってそれぞれ９０°と９０°方向を変え、更に上記１本のワイヤ２の端部を昇降装置本体内の端末止め２０に固定していた。
【０００３】
【発明が解決しようとする課題】
上記のような構成の従来例にあっては、滑車として最低４個必要であって、構造が複雑になり、また、滑車の数が多いので被吊り下げ物の昇降のスムーズさにも問題があった。しかも、滑車Ｃ、滑車Ｄは動滑車であるため、ドラム１にワイヤ２を巻き取ったり、ドラム１からワイヤ２を巻き戻したりする（つまり、被吊り下げ物を昇降する）速度が遅いという問題があった。また、ドラム１に巻く１本のワイヤ２の巻取り長さも長くなるので、ドラム１にワイヤ２を巻き取る際の整列巻きができにくいという問題もあった。更に、ドラム１には常に被吊り下げ物の荷重が一側方からワイーヤを介して作用することになり、ドラム１を回転するためのモータ１３の出力軸やギヤ１４やドラム１の軸等に上記側方からの力が作用し、出力軸やギヤや軸の耐久性に問題があり、破損しやすいという問題があった。
【０００４】
本発明は上記の従来例の問題点に鑑みて発明したものであって、その目的とするところは、簡単な構成でスムーズにドラムにワイヤを巻き取ったり、巻き戻したりして被吊り下げ物をスムーズに昇降でき、また、被吊り下げ物の昇降スピードを速くし、また、ドラムへの整列巻きがスムーズに行え、更に、モータの出力軸等の軸やギヤ等が破損しにくく、更に、整列巻きがスムーズに行えるようにしたにもかかわらず被吊り下げ物を昇降装置本体の中心軸に対して平面視で直交する線と平行に吊り下げることができて収まりを良くすることができる昇降装置を提供するにある。
【０００５】
【課題を解決するための手段】
上記の従来例の問題点を解決して本発明の目的を達成するために本発明の昇降装置は、昇降装置本体１２の外殻を構成する平面視長方形状のケースの内部に、ワイヤ巻取り用の単一のドラム１と、ドラム１の両側方に配置されてドラム１に接続され且つ両側に引き出された２本のワイヤ２の方向を転換するための２個の滑車３とを配設し、該２個の滑車３により方向転換された２本のワイヤ２に被吊り下げ物４を吊り下げて成る昇降装置であって、前記平面視長方形状のケースの内部の略中央部にドラム１を配設し、該ドラム１の外周部を軸方向に２区画に分けて２つの巻取り部５ａ、５ｂを形成し、一方の巻取り部５ａに一方のワイヤ２を巻取り且つ他方の巻取り部５ｂに他方のワイヤ２を巻取るように設定し、前記平面視長方形状のケースの長方形の中心を通る短辺と平行な線を昇降装置本体１２の中心軸１０とし、ドラム１の軸６を前記昇降装置本体１２の中心軸１０に対して平面視において傾斜させると共に、該ドラム１の軸６と前記２個の滑車３の軸７とを互いに平行にし、前記２個の滑車３を前記昇降装置本体１２の中心軸１０に対して平面視で直交する線１１上に位置させ、且つ前記ドラム１の回転中心と両側に配置した２個の滑車３の上端部とを同一水平面上に位置させて成ることを特徴とするものである。
【０００８】
【作用】
しかして、上記の構成の本発明にあっては、昇降装置本体１２にワイヤ巻取り用の単一のドラム１と、ドラム１の両側方に配置されてドラム１に接続され且つ両側に引き出された２本のワイヤ２の方向を転換するための２個の滑車３とを備え、該２個の滑車３により方向転換された２本のワイヤ２に被吊り下げ物４を吊り下げることで、１個のドラム１に２本のワイヤ２を巻き取ったり、巻き戻したりすることで機構を簡略化できることになる。そして、動滑車がないことで被吊り下げ物の昇降スピードを速くすることができる。また、ドラム１の回転中心と両側に配置した２個の滑車３の上端部とを同一水平面上に位置させることで、２本のワイヤ２が完全に巻き戻された場合には両ワイヤ２にかかる被吊り下げ物４からの引っ張り力はドラム１の中心においては相殺されることになる。また、ドラム１の外周部を軸方向に２区画に分けて２つの巻取り部５ａ、５ｂを形成し、一方の巻取り部５ａに一方のワイヤ２を巻取り且つ他方の巻取り部５ｂに他方のワイヤ２を巻取るように設定し、ドラム１の軸６と２個の滑車３の軸７とを互いに平行にすることで、２本のワイヤ２をそれぞれ２つの巻取り部５ａ、５ｂにそれぞれ独立して巻き取ることができて、整列巻きがし易いものであり、しかも、この場合、各巻取り部５ａ、５ｂに巻かれるワイヤ２は巻取り長さが短くなることで、いっそう正確に整列巻きが行えることになる。
【００１０】
【実施例】
以下本発明を添付図面に示す実施例に基づいて詳述する。昇降装置本体８の外殻を構成するケースは平面視長方形状をしており、内部の略中央部にワイヤ巻取り用の単一のドラム１が配設してある。該ドラム１はモータ１３の回転をギヤ１４を介して伝達されることで回転するようになっている。ドラム１の外周部は軸方向に２区画に区分けしてあって２つの巻取り部５ａ、５ｂが形成してあり、各巻取り部５ａ、５ｂにそれぞれワイヤ２の端部が接続してあり、この巻取り部５ａ、５ｂにそれぞれ接続した２本のワイヤ２はドラム１の両側に引き出されている。ドラム１の両側方（つまり、ドラム１の軸方向と直交する方向の両側方）にはそれぞれ滑車３が配設してある。このドラム１の両側方に配設した滑車３にそれぞれ上記ドラム１の両側に引き出したワイヤ２を懸け回して下方に方向転換してあり、照明器具のような被吊り下げ物４の両端部に２個の滑車３から下方に方向転換された２本のワイヤ２の下端部が接続してあって、ドラム１を回転することで、２本のワイヤ２をそれぞれ巻取り部５ａ、５ｂに巻き取ったり、巻き戻したりして被吊り下げ物４を上下に昇降するようになっている。
【００１１】
ここで、２本のワイヤ２のうち一方のワイヤ２は一方の巻取り部５ａにドラム１の上面側から巻き取られ、他方のワイヤ２は他方の巻取り部５ｂにドラム１の下面側から巻き取られるというように、両者は逆巻きの関係となっている。そして、本発明においては、ドラム１の回転中心（つまりドラム１の軸７）と両側に配置した２個の滑車３の上端部とが図１（ｂ）に示すように同一水平面Ｌ上に位置させてある。このことにより、図２の状態からドラム１からワイヤ２を巻き戻して図３のように被吊り下げ物４を最下点まで下げた場合、２本のワイヤ２の巻取りがなくなり、荷重が図３（ｂ）のようにワイヤ２にかかる。この時、被吊り下げ物４の荷重をＷとすると、両ワイヤ２にかかる引張り力はＷ／２となり、左右均等に引っ張られることになり、ドラム１の中心に対しては相殺される。また、垂直方向においては全く力がかかっていない。したがって、ドラム１の回転中心、すなわちギヤ、モータ軸、ドラム１の軸等にはオーバーハング荷重がかからないことになる。
【００１２】
図２、図３はモータ１３とドラム１とを並列した実施例であり、図４はモータ１３の回転軸とドラム１の軸６とを直線上に並べた例が示してある。上記実施例においてはドラム１と両側方に配置した滑車３との垂直方向における位置関係について述べたが、図５にはドラム１と両側方に配置した滑車３との平面視における位置関係が示してある。ドラム１の軸６と、ドラム１の両側方に配置した滑車３の軸７とは互いに平行となっている。また、ドラム１の軸６は昇降装置本体８の中心軸１０に対して平面視において傾斜しており（図５（ａ）においては角度θ傾斜している）、しかも、２個の滑車３は昇降装置本体８の中心軸１０に対して平面視で直交する線１１上に位置させてある。つまり、昇降装置本体８の外殻を構成するケースが平面視で長方形となっている場合、長方形の中心を通る短辺と平行な線が昇降装置本体８の中心軸１０となっており、２個の滑車３は長方形の中心を通る長辺と平行な線（この線が線１１となる）上に位置している。このように２個の滑車３を昇降装置本体８の中心軸１０に対して平面視で直交する線１１上に位置させてあることで、両滑車３で方向転換される２本のワイヤ２の下端に接続される被吊り下げ物４は昇降装置本体８に対して平面視で傾くことなく吊り下げられることになる。つまり実施例のように昇降装置本体８の外殻を構成するケースを平面視で長方形とした場合、長方形の長辺と被吊り下げ物４の長辺とが平行となるように配置される。しかも、このように、被吊り下げ物４が昇降装置本体８に対して平面視で傾くことなく吊り下げられるようにしたにもかかわらず、ドラム１の軸６と滑車３の軸７とを平行としてあるので、２本のワイヤ２をそれぞれ２つの巻取り部５ａ、５ｂにそれぞれ独立して巻き取ることができて、整列巻きがし易いものである。しかも、この場合、動滑車を用いないので、各巻取り部５ａ、５ｂに巻かれるワイヤ２は巻取り長さが短くなって、いっそう正確に整列巻きが行え、スムーズな昇降が可能となる。また、動滑車を用いないので滑車の構成が簡略化されて、ワイヤが傷つかず、異音が発生しないようにできるものである。
【００１３】
添付図面に示す実施例においては、ドラム１の回転中心と両側に配置した２個の滑車３の上端部とを同一水平面上に位置させたものにおいて、更に、ドラム１の軸６と２個の滑車３の軸７とを互いに平行にし、ドラム１の軸６を昇降装置本体８の中心軸１０に対して平面視において傾斜させ、２個の滑車３を昇降装置本体８の中心軸１０に対して平面視で直交する線１１上に位置させドラム１の回転中心と両側に配置した２個の滑車３の上端部とを同一水平面上に位置させた構成となっているものを示しているが、ドラム１の回転中心と両側に配置した２個の滑車３の上端部とを同一水平面上に位置させた構成のみを備えたもの、あるいは、ドラム１の軸６と２個の滑車３の軸７とを互いに平行にし、ドラム１の軸６を昇降装置本体８の中心軸１０に対して平面視において傾斜させ、２個の滑車３を昇降装置本体８の中心軸１０に対して平面視で直交する線１１上に位置させドラム１の回転中心と両側に配置した２個の滑車３の上端部とを同一水平面上に位置させた構成のみを備えたものであってもよい。
【００１４】
【発明の効果】
本発明の請求項１記載の発明にあっては、上述のように、ワイヤ巻取り用の単一のドラムと、該ドラムに接続され且つドラムの両側に引き出された２本のワイヤと、ドラムの両側方に配置されて２本のワイヤの方向を転換する２個の滑車と、滑車により方向転換された２本のワイヤに接続された被吊り下げ物とで構成されているから、１個のドラムに２本のワイヤを巻き取ったり、巻き戻したりすることで機構を簡略化できて、スムーズな昇降ができるものであり、また、動滑車がないことで被吊り下げ物の昇降スピードを速くすることができるものである。また、ドラムの回転中心と両側に配置した２個の滑車の上端部とを同一水平面上に位置させるので、２本のワイヤが完全に巻き戻された場合には両ワイヤにかかる被吊り下げ物からの引っ張り力はドラムの中心においては相殺されることになり、この結果、モータの出力軸等の軸やギヤ等が破損しにくく、長期間にわたってスムーズに昇降できるものである。また、ドラムの外周部を軸方向に２区画に分けて２つの巻取り部を形成し、一方の巻取り部に一方のワイヤを巻取り且つ他方の巻取り部に他方のワイヤを巻取るように設定し、ドラムの軸と２個の滑車の軸とを互いに平行にすることで、２本のワイヤをそれぞれ２つの巻取り部にそれぞれ独立して巻き取ることができて、整列巻きがし易いものであり、しかも、この場合、各巻取り部に巻かれるワイヤは巻取り長さが短くなることで、いっそう正確に整列巻きが行えるものである。
【図面の簡単な説明】
【図１】（ａ）（ｂ）は本発明の一実施例のドラムと滑車の位置関係を示す概略平面図及び概略正面図である。
【図２】（ａ）（ｂ）は同上のワイヤの巻取りを示す概略平面図及び概略正面図である。
【図３】（ａ）（ｂ）は同上のワイヤの巻き戻しを示す概略平面図及び概略正面図である。
【図４】（ａ）（ｂ）は本発明の他の実施例を示す概略平面図及び概略正面図である。
【図５】（ａ）（ｂ）は本発明の更に他の実施例を示す概略平面図及び概略正面図である。
【図６】（ａ）（ｂ）は従来例の機構を示す概略平面図及び概略正面図である。
【図７】従来例の機構を示す概略斜視図である。
【符号の説明】
１ ドラム
２ ワイヤ
３ 滑車
４ 被吊り下げ物
５ａ 巻取り部
５ｂ 巻取り部
６ 軸
７ 軸
８ 昇降装置本体
１０ 中心軸
１１ 線[0001]
[Industrial application fields]
The present invention relates to an elevating device for allowing an object to be hung up and down freely.
[0002]
[Prior art]
Conventionally, as an elevating device for elevating an object to be suspended like a lighting fixture, as shown in FIGS. 6 and 7, one wire 2 can be wound around one drum 1 and the 1 The direction of the wire 2 is changed by 180 ° by the pulley A, then changed by 90 ° by the pulley B and extended downward, and then the directions of 90 ° and 90 ° by the pulley C and the pulley D provided on the suspended object, respectively. Further, the end of the one wire 2 was fixed to the terminal stopper 20 in the lifting device main body.
[0003]
[Problems to be solved by the invention]
In the conventional example having the above-described configuration, at least four pulleys are necessary, the structure is complicated, and the number of pulleys is large. there were. Moreover, since the pulley C and the pulley D are moving pulleys, the speed at which the wire 2 is wound around the drum 1 and the wire 2 is rewound from the drum 1 (that is, the object to be hung up and down) is low. was there. In addition, since the winding length of one wire 2 wound around the drum 1 becomes longer, there is a problem that it is difficult to perform the alignment winding when winding the wire 2 around the drum 1. Further, the load of the suspended object always acts on the drum 1 through a wire from one side, and the output shaft of the motor 13 for rotating the drum 1, the gear 14, the shaft of the drum 1, etc. The force from the side acts on the output shaft, the gear and the shaft, and there is a problem that the shaft is easily damaged.
[0004]
The present invention was invented in view of the problems of the above-described conventional example, and the object of the present invention is to suspend an object by smoothly winding or unwinding a wire on a drum with a simple configuration. Can be lifted smoothly, the lifting speed of the suspended object can be increased, the alignment winding around the drum can be performed smoothly, and the shaft and gears such as the output shaft of the motor are not easily damaged. Despite being able to smoothly perform the alignment winding, the suspended object can be suspended in parallel with a line orthogonal to the central axis of the lifting apparatus main body in a plan view, and the lifting can be improved. To provide the equipment.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems of the conventional example and achieve the object of the present invention, the lifting device of the present invention is configured by winding a wire inside a rectangular case in plan view that constitutes the outer shell of the lifting device body 12. A single drum 1 and two pulleys 3 arranged on both sides of the drum 1 and connected to the drum 1 and for changing the direction of the two wires 2 drawn out on both sides. And a lifting device in which the object to be suspended 4 is suspended on the two wires 2 whose directions are changed by the two pulleys 3, and a drum is provided at a substantially central portion of the rectangular case in plan view. 1, the outer peripheral portion of the drum 1 is divided into two sections in the axial direction to form two winding portions 5 a and 5 b, one wire 2 is wound around one winding portion 5 a and the other winding portion 5 a is wound It is set so that the other wire 2 is wound around the winding part 5b, and the rectangular case in the plan view is formed. A line parallel to the short side passing through the center of the rectangle is the central axis 10 of the lifting device main body 12, and the shaft 6 of the drum 1 is inclined with respect to the central axis 10 of the lifting device main body 12 in plan view. 1 shaft 6 and shafts 7 of the two pulleys 3 are parallel to each other, and the two pulleys 3 are positioned on a line 11 orthogonal to the central axis 10 of the lifting device body 12 in plan view. In addition, the center of rotation of the drum 1 and the upper ends of the two pulleys 3 disposed on both sides are positioned on the same horizontal plane.
[0008]
[Action]
Thus, in the present invention having the above-described configuration, the lifting device body 12 is provided with a single drum 1 for winding the wire, and is disposed on both sides of the drum 1 and connected to the drum 1 and pulled out on both sides. And two pulleys 3 for changing the direction of the two wires 2, and by hanging the suspended object 4 on the two wires 2 changed in direction by the two pulleys 3, The mechanism can be simplified by winding or unwinding two wires 2 on one drum 1. And since there is no moving pulley, the ascending / descending speed of the suspended object can be increased. Further, by positioning the rotation center of the drum 1 and the upper ends of the two pulleys 3 arranged on both sides on the same horizontal plane, when the two wires 2 are completely rewound, The pulling force from the suspended object 4 is offset at the center of the drum 1. Further, the outer peripheral portion of the drum 1 is divided into two sections in the axial direction to form two winding portions 5a and 5b, one wire 2 is wound around one winding portion 5a and the other winding portion 5b is wound around The other wire 2 is set to be wound, and the shaft 6 of the drum 1 and the shaft 7 of the two pulleys 3 are made parallel to each other, whereby the two wires 2 are respectively wound into two winding portions 5a and 5b. In this case, the wire 2 wound around each of the winding portions 5a and 5b has a shorter winding length, so that it is more accurate. Aligned winding can be performed.
[0010]
【Example】
Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings. The case constituting the outer shell of the lifting device main body 8 has a rectangular shape in plan view, and a single drum 1 for winding the wire is disposed at a substantially central portion inside. The drum 1 is rotated by transmitting the rotation of the motor 13 through the gear 14. The outer peripheral portion of the drum 1 is divided into two sections in the axial direction, and two winding portions 5a and 5b are formed. The ends of the wires 2 are connected to the winding portions 5a and 5b, respectively. Two wires 2 respectively connected to the winding portions 5a and 5b are drawn out to both sides of the drum 1. A pulley 3 is provided on each side of the drum 1 (that is, on both sides in a direction orthogonal to the axial direction of the drum 1). Wires 2 drawn out on both sides of the drum 1 are hung around the pulleys 3 arranged on both sides of the drum 1 and turned downward, respectively, at both ends of a suspended object 4 such as a lighting fixture. The lower ends of the two wires 2 redirected downward from the two pulleys 3 are connected, and the drum 1 is rotated so that the two wires 2 are wound around the winding portions 5a and 5b, respectively. The suspended object 4 is moved up and down by taking up or rewinding.
[0011]
Here, one of the two wires 2 is wound on one winding part 5a from the upper surface side of the drum 1, and the other wire 2 is wound on the other winding part 5b from the lower surface side of the drum 1. Both have a reverse winding relationship, such as being wound up. In the present invention, the rotation center of the drum 1 (that is, the shaft 7 of the drum 1) and the upper ends of the two pulleys 3 arranged on both sides are positioned on the same horizontal plane L as shown in FIG. I'm allowed. Thus, when the wire 2 is rewound from the drum 1 from the state of FIG. 2 and the suspended object 4 is lowered to the lowest point as shown in FIG. It is applied to the wire 2 as shown in FIG. At this time, if the load of the suspended object 4 is W, the pulling force applied to both wires 2 is W / 2, which is pulled evenly on the left and right, and cancels out against the center of the drum 1. Also, no force is applied in the vertical direction. Therefore, an overhang load is not applied to the rotation center of the drum 1, that is, the gear, the motor shaft, the shaft of the drum 1, and the like.
[0012]
2 and 3 show an embodiment in which the motor 13 and the drum 1 are arranged in parallel, and FIG. 4 shows an example in which the rotation shaft of the motor 13 and the shaft 6 of the drum 1 are arranged on a straight line. In the above embodiment, the positional relationship in the vertical direction between the drum 1 and the pulleys 3 arranged on both sides has been described, but FIG. 5 shows the positional relationship in plan view between the drum 1 and the pulleys 3 arranged on both sides. It is. The shaft 6 of the drum 1 and the shaft 7 of the pulley 3 disposed on both sides of the drum 1 are parallel to each other. Further, the shaft 6 of the drum 1 is inclined in plan view with respect to the central axis 10 of the lifting device main body 8 (in FIG. 5A, it is inclined at an angle θ), and the two pulleys 3 are It is located on a line 11 orthogonal to the central axis 10 of the lifting device body 8 in plan view. That is, when the case constituting the outer shell of the lifting device body 8 is rectangular in plan view, the line parallel to the short side passing through the center of the rectangle is the central axis 10 of the lifting device body 8, 2 Each pulley 3 is located on a line parallel to the long side passing through the center of the rectangle (this line becomes the line 11). As described above, the two pulleys 3 are positioned on the line 11 orthogonal to the central axis 10 of the lifting device main body 8 in plan view, so that the two wires 2 whose directions are changed by the two pulleys 3 are changed. The suspended object 4 connected to the lower end is suspended with respect to the lifting device body 8 without being inclined in plan view. That is, when the case constituting the outer shell of the lifting device main body 8 is rectangular in plan view as in the embodiment, the long side of the rectangle and the long side of the suspended object 4 are arranged in parallel. In addition, the shaft 6 of the drum 1 and the shaft 7 of the pulley 3 are parallel to each other even though the suspended object 4 is suspended from the lifting device body 8 without being inclined in plan view. Therefore, the two wires 2 can be independently wound around the two winding portions 5a and 5b, respectively, and the aligned winding is easy. In addition, in this case, since the moving pulley is not used, the winding length of the wire 2 wound around each of the winding portions 5a and 5b is shortened, and the aligned winding can be performed more accurately, and smooth elevation can be achieved. Further, since no moving pulley is used, the configuration of the pulley is simplified, and the wire is not damaged and abnormal noise is not generated.
[0013]
In the embodiment shown in the accompanying drawings, the center of rotation of the drum 1 and the upper ends of the two pulleys 3 arranged on both sides are located on the same horizontal plane. The shaft 7 of the pulley 3 is made parallel to each other, the shaft 6 of the drum 1 is inclined with respect to the central shaft 10 of the lifting device body 8 in plan view, and the two pulleys 3 are moved with respect to the central shaft 10 of the lifting device body 8. In this example, the center of rotation of the drum 1 and the upper ends of the two pulleys 3 arranged on both sides are positioned on a line 11 orthogonal to each other in plan view, and are positioned on the same horizontal plane. The rotation center of the drum 1 and the upper end portions of the two pulleys 3 arranged on both sides are arranged only on the same horizontal plane, or the shaft 6 of the drum 1 and the shafts of the two pulleys 3 7 is parallel to each other, and the shaft 6 of the drum 1 is the center of the lifting device body 8. The two pulleys 3 are tilted with respect to 10 in plan view and are located on a line 11 orthogonal to the central axis 10 of the lifting device main body 8 in plan view and arranged on both sides of the rotation center of the drum 1. It may be provided with only a configuration in which the upper end of the pulley 3 is positioned on the same horizontal plane.
[0014]
【The invention's effect】
In the first aspect of the present invention, as described above, a single drum for winding the wire, two wires connected to the drum and drawn out on both sides of the drum, and the drum It is composed of two pulleys arranged on both sides of the wire to change the direction of the two wires, and a suspended object connected to the two wires changed in direction by the pulley. The mechanism can be simplified by winding and unwinding two wires on the drum, and the lifting and lowering speed of the suspended object can be increased by the absence of a moving pulley. It can be made faster. In addition, since the center of rotation of the drum and the upper ends of the two pulleys arranged on both sides are positioned on the same horizontal plane, when the two wires are completely rewound, the suspended object applied to both wires As a result, shafts such as the output shaft of the motor and gears are not easily damaged and can be lifted and lowered smoothly over a long period of time. Further, the outer peripheral portion of the drum is divided into two sections in the axial direction to form two winding portions, and one wire is wound around one winding portion and the other wire is wound around the other winding portion. By setting the drum shaft and the two pulley shafts to be parallel to each other, the two wires can be wound independently on the two winding portions, respectively. In addition, in this case, the wire wound around each winding portion can be more accurately aligned and wound by reducing the winding length.
[Brief description of the drawings]
1A and 1B are a schematic plan view and a schematic front view showing a positional relationship between a drum and a pulley according to an embodiment of the present invention.
FIGS. 2A and 2B are a schematic plan view and a schematic front view showing winding of the wire of FIG.
FIGS. 3A and 3B are a schematic plan view and a schematic front view showing the rewinding of the wire of the above.
4A and 4B are a schematic plan view and a schematic front view showing another embodiment of the present invention.
5A and 5B are a schematic plan view and a schematic front view showing still another embodiment of the present invention.
FIGS. 6A and 6B are a schematic plan view and a schematic front view showing a mechanism of a conventional example, respectively.
FIG. 7 is a schematic perspective view showing a mechanism of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drum 2 Wire 3 Pulley 4 Suspended thing 5a Winding part 5b Winding part 6 Axis 7 Axis 8 Lifting device main body 10 Central axis 11 Line

Claims (1)

昇降装置本体の外殻を構成する平面視長方形状のケースの内部に、ワイヤ巻取り用の単一のドラムと、ドラムの両側方に配置されてドラムに接続され且つ両側に引き出された２本のワイヤの方向を転換するための２個の滑車とを配設し、該２個の滑車により方向転換された２本のワイヤに被吊り下げ物を吊り下げて成る昇降装置であって、前記平面視長方形状のケースの内部の略中央部にドラムを配設し、該ドラムの外周部を軸方向に２区画に分けて２つの巻取り部を形成し、一方の巻取り部に一方のワイヤを巻取り且つ他方の巻取り部に他方のワイヤを巻取るように設定し、前記平面視長方形状のケースの長方形の中心を通る短辺と平行な線を昇降装置本体の中心軸とし、ドラムの軸を前記昇降装置本体の中心軸に対して平面視において傾斜させると共に、該ドラムの軸と前記２個の滑車の軸とを互いに平行にし、前記２個の滑車を前記昇降装置本体の中心軸に対して平面視で直交する線上に位置させ、且つ前記ドラムの回転中心と両側に配置した２個の滑車の上端部とを同一水平面上に位置させて成ることを特徴とする昇降装置。 Inside the case of rectangular shape in plan view that forms the outer shell of the lifting device main body, a single drum for winding the wire, and two drums arranged on both sides of the drum, connected to the drum and pulled out on both sides And two pulleys for changing the direction of the wire, and a lifting device configured to suspend a suspended object on the two wires changed in direction by the two pulleys, A drum is disposed at a substantially central portion inside the rectangular case in plan view, and the outer peripheral portion of the drum is divided into two sections in the axial direction to form two winding portions, and one winding portion has one winding portion. Winding the wire and setting the other wire to be wound on the other winding part, a line parallel to the short side passing through the center of the rectangular shape of the rectangular shape in plan view as the central axis of the lifting device body, The axis of the drum is inclined with respect to the central axis of the lifting device body in plan view. The shaft of the drum and the shaft of the two pulleys are parallel to each other, the two pulleys are positioned on a line orthogonal to the central axis of the lifting device body in plan view, and the drum A lifting device characterized in that the center of rotation and the upper ends of two pulleys arranged on both sides are positioned on the same horizontal plane.
JP07899694A 1994-04-18 1994-04-18 lift device Expired - Lifetime JP3682074B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP07899694A JP3682074B2 (en) 1994-04-18 1994-04-18 lift device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP07899694A JP3682074B2 (en) 1994-04-18 1994-04-18 lift device

Publications (2)

Publication Number Publication Date
JPH07288026A JPH07288026A (en) 1995-10-31
JP3682074B2 true JP3682074B2 (en) 2005-08-10

Family

ID=13677511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP07899694A Expired - Lifetime JP3682074B2 (en) 1994-04-18 1994-04-18 lift device

Country Status (1)

Country Link
JP (1) JP3682074B2 (en)

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