JP2000320505A - Telescopic actuator - Google Patents
Telescopic actuatorInfo
- Publication number
- JP2000320505A JP2000320505A JP11126529A JP12652999A JP2000320505A JP 2000320505 A JP2000320505 A JP 2000320505A JP 11126529 A JP11126529 A JP 11126529A JP 12652999 A JP12652999 A JP 12652999A JP 2000320505 A JP2000320505 A JP 2000320505A
- Authority
- JP
- Japan
- Prior art keywords
- rod
- outer cylinder
- transmission cable
- moving pulley
- pulley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Actuator (AREA)
- Transmission Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、荷物等を昇降可
能に配置したり、各種機器を昇降可能に据え付ける場合
などに使用されるテレスコープ式アクチュエータに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescope-type actuator used for, for example, arranging luggage and the like so as to be able to move up and down, and installing various devices so as to be able to move up and down.
【０００２】[0002]
【従来の技術】この種のアクチュエータとしては、例え
ば本出願人の提案に係るもので、特開平１０−２３８５
１１号公報に開示されたものが知られている。それは図
５に示すように、外筒Ａ内に第１ロッド１と第２ロッド
２と第３ロッド３とをその軸心方向へ伸縮自在な状態で
テレスコープ状に内嵌し、第１ロッド１の上端部に第１
ブラケット１１を介して第１動滑車２１を回転自在に支
持し、その第１動滑車２１にロッドの軸心方向へ延びる
第１伝動索体３１を逆Ｕ字状に巻掛け、その第１伝動索
体３１の一端３１ａを上記の外筒Ａに連結するととも
に、当該第１伝動索体３１の他端３１ｂを上記の第２ロ
ッド２の基端部に連結し、上記外筒Ａに対して第１ロッ
ド１を伸長させる駆動手段Ｄを設ける。2. Description of the Related Art As an actuator of this type, for example, one proposed by the present applicant is disclosed in Japanese Patent Application Laid-Open No. 10-2385.
The one disclosed in Japanese Patent Publication No. 11 is known. As shown in FIG. 5, a first rod 1, a second rod 2, and a third rod 3 are telescopically fitted in an outer cylinder A in a state where the first rod 1, the second rod 2, and the third rod 3 can be extended and contracted in the axial direction. First on top of 1
A first moving pulley 21 is rotatably supported via a bracket 11, and a first transmission cable 31 extending in the axial direction of the rod is wound around the first moving pulley 21 in an inverted U-shape. One end 31a of the cable 31 is connected to the outer cylinder A, and the other end 31b of the first transmission cable 31 is connected to the base end of the second rod 2. A driving means D for extending the first rod 1 is provided.
【０００３】上記駆動手段Ｄは、外筒Ａ内に形成された
筒孔７と、第１ロッド１の基端部に形成され、上記筒孔
７内に気密移動自在に挿入されたピストン５と、上記ピ
ストン５の下側に形成された流体作動室８と、その流体
作動室８に圧縮流体を給排する給排ポート９とから構成
される。また、上記第２ロッド２の上端部に第２ブラケ
ット１２を介して第２動滑車２２を回転自在に支持し、
その第２動滑車２２にロッドの軸心方向へ延びる第２伝
動索体３２を逆Ｕ字状に巻掛け、その第２伝動索体３２
の一端３２ａを第１ロッド１の第１ブラケット１１に連
結するとともに、その第２伝動索体３２の他端３２ｂを
第３ロッド２の基端部に連結する。The driving means D includes a cylindrical hole 7 formed in the outer cylinder A, a piston 5 formed in the base end of the first rod 1 and inserted into the cylindrical hole 7 so as to be airtightly movable. A fluid working chamber 8 formed below the piston 5 and a supply / discharge port 9 for supplying / discharging compressed fluid to / from the fluid working chamber 8. In addition, a second movable pulley 22 is rotatably supported on the upper end of the second rod 2 via the second bracket 12,
A second transmission cable 32 extending in the axial direction of the rod is wound around the second moving pulley 22 in an inverted U-shape, and the second transmission cable 32 is
Is connected to the first bracket 11 of the first rod 1, and the other end 32 b of the second transmission cable 32 is connected to the base end of the third rod 2.
【０００４】上記テレスコープ式アクチュエータは、次
のようにして伸長作動する。上記駆動手段Ｄを構成する
で給排ポート９より流体作動室８内に圧縮流体を供給し
て第１ロッド１を上昇させる。すると、第１動滑車２１
が第１伝動索体３１を介して第２ロッド２を上昇させ、
これに連動して第２動滑車２２が第２伝動索体３２を介
して第３ロッド３を上昇させる。なお、外筒Ａに対する
第１ロッド１の伸長ストロークＳ1と、第１ロッド１に
対する第２ロッド２の伸長ストロークＳ2と、第２ロッ
ド２に対する第３ロッド３の伸長ストロークＳ3とは、
それぞれ等しくなる。[0004] The telescopic actuator operates to extend as follows. By configuring the driving means D, the first rod 1 is raised by supplying compressed fluid from the supply / discharge port 9 into the fluid working chamber 8. Then, the first moving pulley 21
Raises the second rod 2 via the first transmission cable body 31,
In conjunction with this, the second moving pulley 22 raises the third rod 3 via the second transmission cable 32. Incidentally, the tension stroke S 1 of the first rod 1 to the outer cylinder A, an extension stroke S 2 of the second rod 2 relative to the first rod 1, and the second extension stroke S 3 of the third rod 3 relative to the rod 2,
Respectively equal.
【０００５】[0005]
【発明が解決しようとする課題】上記従来技術は、第２
ロッドが第１動滑車２１と第１伝動索体３１とを介して
上昇し、第３ロッドが第２動滑車２２と第２索体３２と
を介して上昇することから、摩擦力等の不整な力が作用
した場合でも、各ロッドが同時に同速でバランスよく伸
長する点で優れるが、なお次の点で改善の余地が残され
ている。The prior art described above has a second problem.
Since the rod rises via the first moving pulley 21 and the first transmission cable 31 and the third rod rises via the second moving pulley 22 and the second cable 32, irregularities such as frictional force and the like occur. Even when a large force is applied, each rod is excellent in that the rods are simultaneously stretched at the same speed with good balance, but there is still room for improvement in the following points.
【０００６】各動滑車や各伝動索体が、いずれもロッド
の外側に位置することから、当該動滑車や各伝動索体に
塵埃等が付着して汚損したり、当該テレスコープ式アク
チュエータの運搬時や備え付け時において、動滑車や各
伝動索体が他の機材と衝突して破損する等の不都合を生
じる虞れがある。本発明の目的は、上述の弊害を解消で
きるテレスコープ式アクチュエータを提供することにあ
る。[0006] Since each of the moving pulleys and the respective transmission cables are located outside the rod, dust and the like adhere to the moving pulleys and the respective transmission cables and become dirty, or the telescopic actuator is transported. At the time of installation or at the time of installation, there is a possibility that an inconvenience such as a breakage of the moving pulley or each transmission cable body colliding with other equipment may occur. SUMMARY OF THE INVENTION An object of the present invention is to provide a telescope type actuator that can solve the above-mentioned problems.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、例えば図１及び図２に示すように、テレ
スコープ式アクチュエータを次のように構成した。請求
項１に記載の発明は、外筒Ａ内に第１ロッド１と第２ロ
ッド２との少なくとも二つのロッドをその軸心方向へ伸
縮自在な状態でテレスコープ状に内嵌して構成したテレ
スコープ式アクチュエータにおいて、上記外筒Ａ内で、
第１ロッド１の基端寄り部に第１動滑車２１を回転自在
に支持し、この第１動滑車２１にロッドの軸心方向へ延
びる第１伝動索体３１をＵ字状に巻掛け、その第１伝動
索体３１の一端３１ａを上記外筒Ａ内先端部に連結する
とともに、その他端３１ｂを巻上手段４０に伝動連結す
る。上記第１ロッド１内で、当該第１ロッド１の先端寄
り部に第２動滑車２２を回転自在に支持し、この第２動
滑車２２にロッドの軸心方向へ延びる第２伝動索体３２
を逆Ｕ字状に巻掛け、その第２伝動索体３２の一端３２
ａを上記外筒Ａ内の基端部に連結するとともに、その他
端３２ｂを第２ロッド２の基端寄り部に連結する。In order to achieve the above object, according to the present invention, as shown in FIGS. 1 and 2, for example, a telescopic actuator is constituted as follows. The first aspect of the present invention is configured such that at least two rods of a first rod 1 and a second rod 2 are telescopically fitted in an outer cylinder A in a state of being extendable and contractible in the axial direction thereof. In the telescopic actuator, in the outer cylinder A,
A first moving pulley 21 is rotatably supported at a base end portion of the first rod 1, and a first transmission cable body 31 extending in the axial direction of the rod is wound around the first moving pulley 21 in a U-shape. One end 31a of the first transmission cable 31 is connected to the distal end of the outer cylinder A, and the other end 31b is transmission-connected to the hoisting means 40. In the first rod 1, a second moving pulley 22 is rotatably supported at a portion near the distal end of the first rod 1, and a second transmission cable 32 extending in the axial direction of the rod on the second moving pulley 22.
Is wound in an inverted U-shape, and one end 32 of the second
a is connected to the proximal end of the outer cylinder A, and the other end 32b is connected to the proximal end of the second rod 2.
【０００８】請求項２に記載の発明は、請求項１に記載
したテレスコープ式アクチュエータにおいて、前記第２
動滑車２２に接近させて第２伝動索体３２の脱輪防止手
段３４を前記第１ロッド１に設けたことを特徴としてい
る。また、請求項３に記載の発明は、請求項１又は請求
項２に記載したテレスコープ式アクチュエータにおい
て、前記外筒Ａと第１ロッド１との間隙内、及び上記の
第１ロッド１と第２ロッドとの間隙内に、それぞれ自己
潤滑性を有する樹脂製のスライダー３６・３６を介在さ
せたことを特徴としている。According to a second aspect of the present invention, there is provided the telescope type actuator according to the first aspect, wherein the second
A feature is provided in which the first rod 1 is provided with a means 34 for preventing derailing of the second transmission cable 32 close to the moving pulley 22. According to a third aspect of the present invention, in the telescope type actuator according to the first or second aspect, in the gap between the outer cylinder A and the first rod 1, and in the first rod 1 and the first rod 1 It is characterized in that resin sliders 36 having self-lubricating properties are interposed in the gap between the two rods.
【０００９】[0009]
【発明の作用・効果】本発明によれば、以下の作用・効
果を奏する。請求項１に記載した発明は、上記のように
構成したことから、第１動滑車２１及びこの第１動滑車
２１にＵ字状に巻掛けた第１伝動索体３１が、外筒Ａ内
に位置する。また、第２動滑車２２及びこの第２動滑車
２２に逆Ｕ字状に巻掛けた第２伝動索体３２が第１ロッ
ド１内に位置する。つまり、各動滑車２１・２２や各伝
動索体３１・３２は、外筒Ａや第１ロッド１内に収容さ
れることとなる。これにより、当該動滑車や各伝動索体
に塵埃等が付着して汚損したり、テレスコープ式アクチ
ュエータの運搬時や備え付け時等において、当該動滑車
や各伝動索体が他の機材と衝突して破損する等の不都合
を解消することができる。According to the present invention, the following functions and effects can be obtained. Since the invention described in claim 1 is configured as described above, the first moving pulley 21 and the first transmission cable 31 wound around the first moving pulley 21 in a U-shape are formed in the outer cylinder A. Located in. The second moving pulley 22 and the second transmission cable 32 wound around the second moving pulley 22 in an inverted U-shape are located in the first rod 1. That is, each of the moving pulleys 21 and 22 and each of the transmission ropes 31 and 32 are accommodated in the outer cylinder A and the first rod 1. As a result, dust and the like adhere to the moving pulleys and the transmission ropes and become contaminated, and the moving pulleys and the transmission ropes collide with other equipment when transporting or mounting the telescopic actuator. Inconveniences such as breakage can be eliminated.
【００１０】請求項２に記載の発明では、第２動滑車２
２に接近させて第２伝動索体３２の脱輪防止手段３４を
第１ロッド１に設けたことから、テレスコープ式アクチ
ュエータの運搬時や備え付け時等において、第２ロッド
２のみを伸長させた場合においても、第２動滑車２２か
ら第２伝動索体３２が不用意に脱落する不都合を防止す
ることができる。According to the second aspect of the present invention, the second moving pulley 2
2 is provided on the first rod 1 so as to prevent the second transmission cable 32 from derailing, so that only the second rod 2 is extended when the telescopic actuator is transported or mounted. Also in this case, it is possible to prevent the inconvenience that the second transmission cable 32 is accidentally dropped from the second moving pulley 22.
【００１１】請求項３に記載の発明では、外筒Ａと第１
ロッド１との間隙内に介在する樹脂製のスライダー３
６、及び第１ロッド１と第２ロッド２との間隙内に介在
する樹脂製のスライダー３６は、いずれも自己潤滑性と
ガイド性を発揮して第１ロッド１及び第２ロッド２を円
滑に伸長させる。According to the third aspect of the invention, the outer cylinder A and the first cylinder
Resin slider 3 interposed in the gap with rod 1
6, and the resin-made slider 36 interposed in the gap between the first rod 1 and the second rod 2 exhibit the self-lubricating property and the guiding property to smoothly move the first rod 1 and the second rod 2. Extend.
【００１２】[0012]
【発明の実施の形態】以下、本発明の一実施形態を図１
〜図４に基づいて説明する。図１は本発明に係るテレス
コープ式アクチュエータの収縮状態をを示し、図１
（Ａ）はそのアクチュエータの縦断側面図、図１（Ｂ）
はそのアクチュエータの縦断正面図である。図２は上記
アクチュエータを最大に伸長させた状態の一部を破断し
た側面図である。また、図３は図１（Ａ）中のＣ−Ｃ線
横断平面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. FIG. 1 shows a contracted state of the telescopic actuator according to the present invention, and FIG.
(A) is a longitudinal side view of the actuator, FIG. 1 (B)
Is a vertical sectional front view of the actuator. FIG. 2 is a side view in which a part of a state where the actuator is fully extended is cut away. FIG. 3 is a cross-sectional plan view taken along line CC in FIG.
【００１３】上記テレスコープ式アクチュエータは、そ
れぞれ四角パイプから成る外筒Ａと第１ロッド１と第２
ロッド２とを備え、上記外筒Ａ内に第１ロッド１と第２
ロッド２とがその軸心方向へ伸縮自在な状態でテレスコ
ープ状に内嵌されている。第２ロッド２の上端部には、
荷物等を搭載するために使用される架台１０が固定され
ている。The above-mentioned telescope type actuator comprises an outer cylinder A comprising a square pipe, a first rod 1 and a second rod 1.
And a first rod 1 and a second rod 2 in the outer cylinder A.
The rod 2 is fitted in a telescope-like manner so as to be able to expand and contract in the axial direction. At the upper end of the second rod 2,
A gantry 10 used for mounting luggage and the like is fixed.
【００１４】図１（Ａ）（Ｂ）に示すように、上記外筒
Ａ内で、第１ロッド１の基端寄り部には第１動滑車２１
が支軸２４を介して回転自在に支持されている。この第
１動滑車２１には、ロッドの軸心方向へ延びる第１伝動
索体３１がＵ字状に巻掛けられ、その第１伝動索体３１
の一端３１ａは上記外筒Ａ内の上端部（先端部）に固定
具１６で連結されるとともに、当該第１索体３１の他端
３１ｂは、図２に示すように巻上手段４０に巻き上げ可
能に連結されている。As shown in FIGS. 1 (A) and 1 (B), a first moving pulley 21 is provided in the outer cylinder A near the base end of the first rod 1.
Are rotatably supported via a support shaft 24. A first transmission cable 31 extending in the axial direction of the rod is wound around the first moving pulley 21 in a U-shape.
One end 31a of the first cable body 31 is connected to the upper end portion (tip portion) in the outer cylinder A by the fixing tool 16, and the other end 31b of the first cable body 31 is wound up by the hoisting means 40 as shown in FIG. It is connected as possible.
【００１５】上記巻上手段４０は、手動式ウィンチを構
成するもので、図２に示すように、外筒Ａの左右外側面
にその基端部４１ａが固定された巻上用フレーム４１
と、その巻上用フレーム４１の基端部４１ａ寄りに設け
られた滑車４２と、その巻上用フレーム４１の他端部４
１ｂに設けられた巻上ドラム４３と、その巻上ドラム４
３と一体回転する従動ギヤ４４と、その従動ギヤ４４と
噛合する主動ギヤ４５と、その主動ギヤ４５と一体回転
する巻上アーム４６と、その巻上アーム４６の先端に設
けられた操作ハンドル４７とを備え、当該操作ハンドル
４７を矢印Ｄ方向に回転操作することにより、人力で第
１伝動索体３１の他端３１ｂを巻き上げ・巻き下げるよ
うに構成されている。The hoisting means 40 constitutes a manual winch. As shown in FIG. 2, a hoisting frame 41 having a base end portion 41a fixed to the left and right outer surfaces of the outer cylinder A.
And a pulley 42 provided near the base end 41 a of the hoisting frame 41, and the other end 4 of the hoisting frame 41.
1b and the hoisting drum 4
3, a driven gear 44 meshing with the driven gear 44, a hoisting arm 46 integrally rotating with the driven gear 45, and an operation handle 47 provided at a tip of the hoisting arm 46. By rotating the operation handle 47 in the direction of the arrow D, the other end 31b of the first transmission cable 31 is wound up and down manually.
【００１６】図１（Ａ）（Ｂ）に示すように、第１ロッ
ド１の先端寄り部の左右内面には、左右一対の第２動滑
車２２・２２がそれぞれ支軸２７・２７で回転自在に支
持されている。これらの各第２動滑車２２・２２には、
それぞれロッドの軸心方向へ延びる第２伝動索体３２・
３２が逆Ｕ字状に、かつ、左右対象に巻掛けられ、それ
らの第２伝動索体３２・３２の各一端３２ａ・３２ａ
は、上記外筒Ａ内の基端部に固定した底板１４に固定具
１７ａで連結され、当該第２伝動索体３２・３２の各他
端３２ｂ・３２ｂは、それぞれ上記第２ロッド２の左右
外側面の基端寄り部に固定具１７ｂで連結されている。
上記のように第２動滑車２２を左右一対設けたのは、左
右をバランスさせて各ロッドの円滑な伸長作動を確保す
るためである。As shown in FIGS. 1 (A) and 1 (B), a pair of left and right second movable pulleys 22 is rotatable on support shafts 27 on the left and right inner surfaces of the first rod 1 near the distal end. It is supported by. Each of these second moving pulleys 22
A second transmission cable 32 extending in the axial direction of the rod.
32 are wound in an inverted U-shape and symmetrically to the left and right, and one ends 32a, 32a of the second transmission ropes 32, 32, respectively.
Is connected to a bottom plate 14 fixed to the base end portion of the outer cylinder A by a fixture 17a, and the other ends 32b and 32b of the second transmission ropes 32 and 32 are connected to the left and right of the second rod 2 respectively. It is connected to a base end portion of the outer surface by a fixture 17b.
The pair of left and right second moving pulleys 22 is provided as described above in order to balance the left and right and to ensure a smooth extension operation of each rod.
【００１７】第１ロッド１の左右内面の先端寄り部に
は、図１（Ａ）に示すように、第２動滑車２２に接近さ
せて第２伝動索体３２の脱輪防止手段３４が設けられて
いる。これは、テレスコープ式アクチュエータの運搬時
や備え付け時等において、第２ロッド２のみが伸長した
場合に、第２動滑車２２から第２伝動索体３２が不用意
に脱落するのを防止することを意図したものである。な
お、上記脱輪防止手段３４は、後述する樹脂製のスライ
ダー３６をも兼ねる。As shown in FIG. 1 (A), the first rod 1 is provided with means for preventing the second transmission cable 32 from coming off from the left and right inner surfaces thereof, as shown in FIG. Have been. This is to prevent the second transmission cable 32 from accidentally falling off the second moving pulley 22 when only the second rod 2 is extended, for example, during transportation or installation of the telescopic actuator. It is intended. In addition, the derailing prevention means 34 also serves as a resin slider 36 described later.
【００１８】外筒Ａと第１ロッド１との間隙内、及び第
１ロッド１と第２ロッドとの間隙内には、それぞれ自己
潤滑性を有する樹脂製のスライダー３６・３６が介在さ
れている。即ち、図１（Ａ）（Ｂ）及び図３に示すよう
に、外筒Ａの上端部の各内面にそれぞれ２個のスライダ
ー３６が、第１ロッド１の下端部の各外面にそれぞれ２
個のスライダー３６が、第１ロッド１の上端部の各内面
にそれぞれ２個のスライダー３６が、第２ロッド２の下
端部の各外面にそれぞれ２個のスライダー３６がそれぞ
れ固設されている。これは、上記の各間隙内に介在する
樹脂製のスライダー３６が、自己潤滑性とガイド性を発
揮して第１ロッド１及び第２ロッド２を円滑に伸長させ
ることを意図したものである。In the gap between the outer cylinder A and the first rod 1 and in the gap between the first rod 1 and the second rod, sliders 36 made of resin having self-lubricating properties are interposed. . That is, as shown in FIGS. 1A and 1B and FIG. 3, two sliders 36 are provided on each inner surface of the upper end of the outer cylinder A, and two sliders 36 are provided on each outer surface of the lower end of the first rod 1.
Two sliders 36 are fixed to each inner surface of the upper end of the first rod 1, and two sliders 36 are fixed to each outer surface of the lower end of the second rod 2. This is intended to allow the resin-made slider 36 interposed in each of the above-mentioned gaps to exhibit the self-lubricating property and the guide property to smoothly extend the first rod 1 and the second rod 2.
【００１９】上記外筒Ａの左右中間部には、図１（Ａ）
（Ｂ）に示すように、左右一対のストッパ３７・３７が
設けられている。これらのストッパ３７・３７は、第１
ロッド１がその上限位置まで上昇したときに、第１動滑
車２１の左右の支軸固定ボルト２６・２６に接当して当
該第１ロッド１の上昇移動を規制する。また、上記スト
ッパ３７・３７は、前記巻上用フレーム４１の基端部４
１ａを固定する一つの固定ボルトを兼ねる。なお、第１
ロッド１の下端は外筒Ａ内の基端部に固定した底板１４
に接当してその下降移動が規制される。At the left and right intermediate part of the outer cylinder A, FIG.
As shown in (B), a pair of left and right stoppers 37 is provided. These stoppers 37
When the rod 1 rises to its upper limit position, the rod 1 comes into contact with the left and right support shaft fixing bolts 26 of the first moving pulley 21 to regulate the upward movement of the first rod 1. In addition, the stoppers 37 are connected to the base end 4 of the hoisting frame 41.
Also serves as one fixing bolt for fixing 1a. The first
The lower end of the rod 1 is a bottom plate 14 fixed to the base end in the outer cylinder A.
And its downward movement is regulated.
【００２０】図１（Ａ）（Ｂ）及び図２に示すように、
第２ロッドの上端部には、架台１０の組み付けフランジ
１０ａが複数の固定ボルト３８で固定されている。これ
らの固定ボルト３８は、第２ロッド２がその下限位置ま
で下降したときに第１ロッド１の上端に接当して当該第
２ロッド２の下降移動を規制する。As shown in FIGS. 1A and 1B and FIG.
At the upper end of the second rod, an assembling flange 10a of the gantry 10 is fixed with a plurality of fixing bolts 38. These fixing bolts 38 contact the upper end of the first rod 1 when the second rod 2 descends to its lower limit position, thereby restricting the lowering movement of the second rod 2.
【００２１】第１動滑車２１の直径は、図４（Ａ）
（Ｂ）に示すように、第１ロッド１の前後方向の幅より
も大きく、図３に示すように、外筒Ａの前後方向の幅よ
りも僅かに小さく設定されている。これは図３に示すよ
うに、第１動滑車２１と外筒Ａとの隙間を小さくするこ
とにより、第１動滑車２１から第１伝動索体３１が不用
意に脱落するのを防止することを意図したものである。The diameter of the first moving pulley 21 is shown in FIG.
As shown in (B), the width of the first rod 1 is set to be larger than the width in the front-rear direction, and as shown in FIG. This is to reduce the gap between the first moving pulley 21 and the outer cylinder A as shown in FIG. 3 so as to prevent the first transmission cable 31 from dropping out of the first moving pulley 21 carelessly. It is intended.
【００２２】ここで、図４は第１ロッド１に対する第１
動滑車２１の組み付け状態を示し、図４（Ａ）はその要
部の縦断側面図、図４（Ｂ）は図４（Ａ）中のＢ−Ｂ線
矢視横断平面図である。ここで、第１ロッド１の下端近
傍部の前後壁には、図４(Ａ)(Ｂ)に示すように、滑車組
付用の切欠２０が大きく開口されており、第１動滑車２
１とその支軸２４を、図４（Ｂ）中の仮想線で示すよう
に、第１ロッド１内に対角をなすように挿入する。次い
でそれらを切欠２０を利用して矢印Ｆ方向へ４５°旋回
させて実線位置に位置決めし、支軸２４を固定ボルト２
６で固定して組み付ける。上記構成は、四角パイプを組
み合わせつつ、可能な限りコンパクトな配置構成を意図
したものである。Here, FIG. 4 shows the first rod 1 with respect to the first rod 1.
4 (A) is a longitudinal sectional side view of a main part thereof, and FIG. 4 (B) is a cross-sectional plan view taken along line BB in FIG. 4 (A). Here, on the front and rear walls near the lower end of the first rod 1, as shown in FIGS.
1 and its support shaft 24 are inserted diagonally into the first rod 1 as shown by the phantom line in FIG. Then, they are turned by 45 ° in the direction of arrow F using the notch 20 to be positioned at the solid line position, and the support shaft 24 is fixed to the fixing bolt 2.
Fix with 6 and assemble. The above configuration is intended to be as compact as possible while combining square pipes.
【００２３】上記テレスコープ式アクチュエータは、次
のようにして伸長作動する。図２に示すように、第１伝
動索体３１の他端３１ｂを巻上手段４０によって巻き上
げる。すると外筒Ａに対して第１動滑車２１と第１ロッ
ド１が一体に上昇する。また、第１ロッド１の上昇に伴
って当該第１ロッド１の先端部に支持された第２動滑車
２２が上昇し、これに伴って第２伝動索体３２を介して
第２ロッド２が上昇していく。The above-mentioned telescope type actuator operates to extend as follows. As shown in FIG. 2, the other end 31 b of the first transmission cable 31 is hoisted by the hoisting means 40. Then, the first moving pulley 21 and the first rod 1 rise integrally with the outer cylinder A. In addition, as the first rod 1 rises, the second moving pulley 22 supported at the tip of the first rod 1 rises, and the second rod 2 moves via the second transmission cable 32 accordingly. Going up.
【００２４】この場合、動滑車の原理により、第１伝動
索体３１の巻き上げ量の半分が、外筒Ａに対する第１ロ
ッド１移動ストロークＳ1となる。そして巻上手段４０
による巻き上げ力は、上記第１ロッド１に作用する負荷
の半分となる。また、外筒Ａに対する第２ロッド２の移
動量は、外筒Ａに対する第１ロッド１の移動量の二倍に
なる。従って、第１ロッド１に対する第２ロッド２の移
動ストロークＳ2は、上記第１ロッド１の移動ストロー
クＳ1と等しくなる。In this case, according to the principle of the moving pulley, half of the amount of winding of the first transmission cable 31 is the movement stroke S 1 of the first rod 1 with respect to the outer cylinder A. And hoisting means 40
Is half of the load acting on the first rod 1. Further, the amount of movement of the second rod 2 with respect to the outer cylinder A is twice the amount of movement of the first rod 1 with respect to the outer cylinder A. Therefore, the movement stroke S 2 of the second rod 2 relative to the first rod 1 is equal to the moving stroke S 1 of the first rod 1.
【００２５】本発明は、上記の実施形態に限るものでは
なく、例えば次のように適宜変更を加えて実施可能であ
る。即ち、前記ロッド１・２は、２本に代えて３本以上
であってもよい。最も内側に配置されるロッド（ここで
は第２ロッド）は、軽量化の観点から中空に構成するこ
とが好ましいが、中実であっても差し支えない。また、
動滑車２１・２２と伝動索体３１・３２との組み合わせ
は、プーリとロープ、あるいは、スプロケットとチェー
ン、歯車と歯付きベルト、であっても差し支えない。The present invention is not limited to the above embodiment, but can be implemented with, for example, the following modifications. That is, the number of the rods 1 and 2 may be three or more instead of two. The innermost rod (here, the second rod) is preferably hollow from the viewpoint of weight reduction, but may be solid. Also,
The combination of the moving pulleys 21 and 22 and the transmission ropes 31 and 32 may be a pulley and a rope, a sprocket and a chain, a gear and a toothed belt.
【００２６】さらに、外筒とロッドは、四角パイプ状の
ものに代えて、円形パイプ状のもの、断面コ字状の溝型
鋼で構成したもの、あるいは三角パイプ状のものであっ
ても差し支えない。また、前記巻上手段４０は、例示し
た手動式ウィンチに代えて、電動式ウィンチや流体圧シ
リンダなどを利用しても差し支えない。Further, the outer cylinder and the rod may be a circular pipe, a channel steel having a U-shaped cross section, or a triangular pipe instead of the square pipe. . In addition, the hoisting means 40 may use an electric winch, a fluid pressure cylinder, or the like instead of the illustrated manual winch.
【図１】本発明に係るテレスコープ式アクチュエータの
収縮状態を示し、図１（Ａ）はそのアクチュエータの縦
断側面図、図１（Ｂ）はそのアクチュエータの縦断正面
図である。FIG. 1 shows a contracted state of a telescopic actuator according to the present invention. FIG. 1 (A) is a longitudinal sectional side view of the actuator, and FIG. 1 (B) is a longitudinal sectional front view of the actuator.
【図２】上記アクチュエータを最大に伸長させた状態の
一部を破断した側面図である。FIG. 2 is a side view in which a part of a state where the actuator is maximally extended is broken.
【図３】図１（Ａ）中のＣ−Ｃ線矢視横断平面図であ
る。FIG. 3 is a cross-sectional plan view taken along line CC in FIG. 1 (A).
【図４】第１ロッドに対する第１動滑車の組み付け状態
を示し、図４（Ａ）はその要部の縦断面図、図４（Ｂ）
は図４（Ａ）中のＢ−Ｂ線矢視横断平面図である。4A and 4B show an assembled state of the first moving pulley with respect to the first rod. FIG. 4A is a longitudinal sectional view of a main part thereof, and FIG.
FIG. 5 is a cross-sectional plan view taken along line BB in FIG.
【図５】従来例に係るテレスコープ式アクチュエータの
伸長状態を示す縦断側面図である。FIG. 5 is a longitudinal sectional side view showing an extended state of a telescopic actuator according to a conventional example.
１…第１ロッド、２…第２ロッド、２１…第１動滑車、
２２…第２動滑車、３１…第１伝動索体、３１ａ…第１
伝動索体の一端、３１ｂ…第１伝動索体の他端、３２…
第２伝動索体、３２ａ…第２伝動索体の一端、３２ｂ…
第２伝動索体の他端、３４…脱輪防止手段、３６…スラ
イダー、４０…巻上手段、Ａ…外筒。DESCRIPTION OF SYMBOLS 1 ... 1st rod, 2 ... 2nd rod, 21 ... 1st moving pulley,
22: second pulley, 31: first transmission cable, 31a: first
One end of the transmission cable, 31b ... the other end of the first transmission cable, 32 ...
Second transmission cable, 32a ... One end of the second transmission cable, 32b ...
The other end of the second transmission cable, 34: derailing prevention means, 36: slider, 40: hoisting means, A: outer cylinder.
Claims (3)
ロッド（２）との少なくとも二つのロッドをその軸心方
向へ伸縮自在な状態でテレスコープ状に内嵌して構成し
たテレスコープ式アクチュエータにおいて、 上記外筒（Ａ）内で、第１ロッド（１）の基端寄り部に
第１動滑車（２１）を回転自在に支持し、この第１動滑
車（２１）にロッドの軸心方向へ延びる第１伝動索体
（３１）をＵ字状に巻掛け、その第１伝動索体（３１）
の一端（３１ａ）を上記外筒（Ａ）内先端部に連結する
とともに、その他端（３１ｂ）を巻上手段（４０）に巻
き上げ可能に連結し、 上記第１ロッド（１）内の先端寄り部に第２動滑車（２
２）を回転自在に支持し、この第２動滑車（２２）にロ
ッドの軸心方向へ延びる第２伝動索体（３２）を逆Ｕ字
状に巻掛け、その第２伝動索体（３２）の一端（３２
ａ）を上記外筒（Ａ）内の基端部に連結するとともに、
その他端（３２ｂ）を上記第２ロッド（２）の基端寄り
部に連結した、ことを特徴とするテレスコープ式アクチ
ュエータ。1. A first rod (1) and a second rod (2) in an outer cylinder (A).
In a telescopic actuator configured by telescopically fitting at least two rods with the rod (2) in a state of being extendable and contractible in the axial direction thereof, a first rod ( A first moving pulley (21) is rotatably supported at the base end portion near 1), and a first transmission cable (31) extending in the axial direction of the rod is mounted on the first moving pulley (21) in a U-shape. And its first transmission cable (31)
One end (31a) of the first rod (1) is connected to the inside end of the outer cylinder (A), and the other end (31b) is connected to the winding means (40) so as to be able to be wound up. The second pulley (2
2) is rotatably supported, and a second transmission cable (32) extending in the axial direction of the rod is wrapped around the second moving pulley (22) in an inverted U-shape. ) At one end (32
a) is connected to the base end in the outer cylinder (A),
A telescope-type actuator, characterized in that the other end (32b) is connected to the proximal end of the second rod (2).
チュエータにおいて、前記第２動滑車（２２）に接近さ
せて第２伝動索体（３２）の脱輪防止手段（３４）を前
記第１ロッド（１）に設けた、ことを特徴とするテレス
コープ式アクチュエータ。2. The telescope-type actuator according to claim 1, wherein said second rod (32) is moved closer to said second pulley (22) to move said second rod (32) out of said first rod. A telescopic actuator provided in (1).
コープ式アクチュエータにおいて、前記外筒（Ａ）と第
１ロッド（１）との間隙内、及び上記第１ロッド（１）
と第２ロッド（と）の間隙内に、それぞれ自己潤滑性を
有する樹脂製のスライダー（３６・３６）を介在させ
た、ことを特徴とするテレスコープ式アクチュエータ。3. The telescope type actuator according to claim 1, wherein the first rod (1) is in a gap between the outer cylinder (A) and the first rod (1).
A telescopic actuator, wherein resin sliders (36, 36) each having self-lubricating property are interposed in a gap between the first rod and the second rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12652999A JP4041618B2 (en) | 1999-05-07 | 1999-05-07 | Telescopic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12652999A JP4041618B2 (en) | 1999-05-07 | 1999-05-07 | Telescopic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000320505A true JP2000320505A (en) | 2000-11-24 |
| JP4041618B2 JP4041618B2 (en) | 2008-01-30 |
Family
ID=14937469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12652999A Expired - Fee Related JP4041618B2 (en) | 1999-05-07 | 1999-05-07 | Telescopic actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4041618B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008523992A (en) * | 2004-12-15 | 2008-07-10 | エス・エム・エス・デマーク・アクチエンゲゼルシャフト | Equipment for moving metal materials |
| JP2009191988A (en) * | 2008-02-15 | 2009-08-27 | Hiwin Mikrosystem Corp | Linear actuator |
| JP2009191989A (en) * | 2008-02-15 | 2009-08-27 | Hiwin Mikrosystem Corp | Linear actuator |
| CN106388844A (en) * | 2016-12-09 | 2017-02-15 | 中央军委后勤保障部卫生局药品仪器检验所 | Telescopic mechanism and portable type digital X-ray machine |
| CN116735283A (en) * | 2023-06-21 | 2023-09-12 | 南京信息工程大学 | Ocean sediment layered sampler |
-
1999
- 1999-05-07 JP JP12652999A patent/JP4041618B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008523992A (en) * | 2004-12-15 | 2008-07-10 | エス・エム・エス・デマーク・アクチエンゲゼルシャフト | Equipment for moving metal materials |
| JP2009191988A (en) * | 2008-02-15 | 2009-08-27 | Hiwin Mikrosystem Corp | Linear actuator |
| JP2009191989A (en) * | 2008-02-15 | 2009-08-27 | Hiwin Mikrosystem Corp | Linear actuator |
| CN106388844A (en) * | 2016-12-09 | 2017-02-15 | 中央军委后勤保障部卫生局药品仪器检验所 | Telescopic mechanism and portable type digital X-ray machine |
| CN106388844B (en) * | 2016-12-09 | 2023-09-01 | 中央军委后勤保障部卫生局药品仪器检验所 | Telescopic mechanism and portable digital X-ray machine |
| CN116735283A (en) * | 2023-06-21 | 2023-09-12 | 南京信息工程大学 | Ocean sediment layered sampler |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4041618B2 (en) | 2008-01-30 |
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