JPS59175609A - Rotation driving device - Google Patents

Rotation driving device

Info

Publication number
JPS59175609A
JPS59175609A JP4833283A JP4833283A JPS59175609A JP S59175609 A JPS59175609 A JP S59175609A JP 4833283 A JP4833283 A JP 4833283A JP 4833283 A JP4833283 A JP 4833283A JP S59175609 A JPS59175609 A JP S59175609A
Authority
JP
Japan
Prior art keywords
piston
main fluid
rack
cylinder tube
valve body
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.)
Pending
Application number
JP4833283A
Other languages
Japanese (ja)
Inventor
Yoshinari Ogasawara
小笠原 良成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CKD Corp
Original Assignee
CKD Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CKD Corp filed Critical CKD Corp
Priority to JP4833283A priority Critical patent/JPS59175609A/en
Publication of JPS59175609A publication Critical patent/JPS59175609A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To enlarge cushion possible range by providing a valve body on a piston in a rack-pinion rotation driving device, thereby blocking a main fluid path communicating with a feed and discharge port. CONSTITUTION:When pressurized fluid is supplied to a port 31a to discharge a fluid through a feed and discharge port 31, a valve body 8a is first pushed to the right to open a main fluid path 32a, so that pressurized fluid enters a piston chamber C2 to push pistons 4a, 4 to the right, thereby rotating a pinion 6 and a driving shaft 60 clockwise. At this time, though the fluid in a piston chamber C1 is at first discharged through a main fluid path 32 and a throttle path 33, a valve body 8 is brought into contact with the inner surface of an end cover 3 by movement of the piston to close the main fluid path 32. Accordingly, the fluid in the piston chamber C1 can be discharged only through the throttle path 33, so that the piston is subjected to cushion action corresponding to the opening of a variable throttle valve 34.

Description

【発明の詳細な説明】 本発明はラック及びビニオンを用いたラック・ビニオン
式回転駆動装置に関し、更に詳細には余分なスペースを
極力減少して大きな回転範囲に亘ってスピード調整を可
能にした回転駆動装置に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rack-and-binion type rotary drive device using a rack and a pinion, and more specifically, the present invention relates to a rack-and-binion type rotation drive device that uses a rack and a pinion, and more specifically, a rotation drive device that minimizes unnecessary space and enables speed adjustment over a wide rotation range. It relates to a drive device.

ピストンの移動に制動を加えることによってビニオンの
回転に制動を与えてスピードを調整する形式の従来のラ
ックピニオン式の回転駆動としては特開昭55−762
04号公報に記載さたものがある。しかしながらこの公
報記載の装置ではピストンの最終制動を行なうために極
めて複雑な構造となる問題があり、又ラックを設けた軸
よりもピストンの径が大きくなると、ピストンに制動を
加えるクッション装置を設けることができなくなり、し
たがって小径のものを作ることは非常に困難となる問題
がある。更に従来の装置では制動範囲(したがってクッ
ション可能範囲)を大きくするためには装置が大形化す
る問題もある。
JP-A-55-762 is a conventional rack and pinion type rotary drive in which the speed is adjusted by applying a brake to the rotation of the pinion by applying a brake to the movement of the piston.
There is one described in Publication No. 04. However, the device described in this publication has the problem of an extremely complicated structure in order to perform the final braking of the piston, and if the diameter of the piston is larger than the shaft on which the rack is installed, it is necessary to provide a cushion device that applies braking to the piston. There is a problem in that it becomes impossible to make small-diameter products. Furthermore, in the conventional device, there is a problem in that the device becomes large in order to increase the braking range (therefore, the cushionable range).

本発明はかかる従来のラック・ビニオン式回転駆動装置
のかかる問題に鑑みなされたものであってその目的とす
るところは比較的大きな回転角の範囲にわたって制動(
クッション)をきかしてスピードの調整ができしかも構
造の簡単な回転駆動装置を得ることにある。
The present invention was devised in view of the problems of the conventional rack-binion rotary drive device, and its purpose is to brake (brake) over a relatively large rotational angle range.
The object of the present invention is to obtain a rotary drive device whose speed can be adjusted using a cushion (cushion) and whose structure is simple.

本発明は、シリンダチューブ内に移動可能に設けられた
ピストンと、該ピストンに直結されたラックと、該シリ
ンダチューブに回転可能に設けられていて該ランクとか
み合うビニオンとを有し、該シリンダチューブ内で該ピ
ストンに作用する流体圧によりピストンを移動して該ビ
ニオンを回転する回転駆動装置において、該シリンダチ
ューブの端部を塞ぐエンドカバーに給排ボートと通じる
主流体通路と絞9通路とを形成して該主流体通路を該ピ
ストンに向けて開口させ、該ピストンには該主流体通路
の開口端を塞ぐ弁体を該ピストンに関して相対移動可能
に取υ付けて構成され、弁体が該主流体通路の開口端を
塞いだ後ピストン室内の流体圧を絞り通路のみを介して
排出してピストンを制動し、ビニオンの回転にクッショ
ンを作用させるようになっている。
The present invention has a piston movably provided in a cylinder tube, a rack directly connected to the piston, and a pinion rotatably provided in the cylinder tube and meshing with the rank, the cylinder tube In the rotary drive device that moves the piston and rotates the binion by fluid pressure acting on the piston within the cylinder tube, an end cover that closes the end of the cylinder tube has a main fluid passage communicating with the supply/discharge boat and a restriction passage 9. the main fluid passage is opened toward the piston, and a valve body for closing the open end of the main fluid passage is attached to the piston so as to be movable relative to the piston; After the opening end of the main fluid passage is closed, the fluid pressure in the piston chamber is discharged only through the throttle passage, thereby braking the piston and acting as a cushion on the rotation of the pinion.

以下図面を参照して本発明の実施例について説明する。Embodiments of the present invention will be described below with reference to the drawings.

図において本実施例による回転駆動装置1が示されてい
る。同図において、2はシリンダチューブ、3.3aは
シリンダチューブ2の両端に嵌合固定されたエンドカバ
ー、4.4aはシリンダチューブ内に移動可能に挿入さ
れたピストンである。
In the figure, a rotary drive device 1 according to this embodiment is shown. In the figure, 2 is a cylinder tube, 3.3a is an end cover fitted and fixed to both ends of the cylinder tube 2, and 4.4a is a piston movably inserted into the cylinder tube.

ピストン4と4aとは、本実施例では長い部材の両端に
一体的に形成され、二つのピストン4と4aとの間にラ
ック5が形成されている。シリンダチューブ2内にはラ
ック5とかみ合うビニオン6が公知の方法により回転可
能に取り付けられている。
In this embodiment, the pistons 4 and 4a are integrally formed at both ends of a long member, and a rack 5 is formed between the two pistons 4 and 4a. A pinion 6 that engages with a rack 5 is rotatably mounted within the cylinder tube 2 by a known method.

エンドカバー3には、給排ボート3]とピストン室C1
とを連通ずる主流体通路32と、給排ボート31とピス
トン室CIとを主流体通路と並列に通じる絞9通路33
とが形成されている。エンドカバー3aにも給排ボー)
31aと、主流体通路32aと、絞り通路33aとが形
成されている。
The end cover 3 includes a supply/discharge boat 3] and a piston chamber C1.
a main fluid passage 32 that communicates with the main fluid passage, and a throttle 9 passage 33 that communicates the supply/discharge boat 31 and the piston chamber CI in parallel with the main fluid passage.
is formed. Also supply/discharge bow to end cover 3a)
31a, a main fluid passage 32a, and a throttle passage 33a are formed.

絞り通路33及び33aの途中にはそれぞれニードル3
5135aを有する可変絞り34及び34aが設けられ
ている。主流体通路32及び32aは、はぼ同一軸心上
でピストンに向って開口している。
Needles 3 are provided in the middle of the throttle passages 33 and 33a, respectively.
Variable apertures 34 and 34a with 5135a are provided. The main fluid passages 32 and 32a are substantially coaxial and open toward the piston.

ピストンには主流体路32.32aに対応する位置に貫
通孔41が形成され、その貫通孔の両端は大径になって
いる。貫通孔41内にはロッド7が移動可能に挿入され
、その両端にはエンドカバー3及び3aの内面とそれぞ
れ接して主流体通路32及び32aの開口端を塞ぐ弁体
8及び8aが固定されている。弁体8及び8aは貫通孔
41の開口端の大径部42及び42a内にそれぞれ入9
得るようになっている。弁体8及び8aはエンドカバー
に形成された主流体通路を開閉するポペット弁として機
能する。
A through hole 41 is formed in the piston at a position corresponding to the main fluid passage 32.32a, and both ends of the through hole have a large diameter. A rod 7 is movably inserted into the through hole 41, and valve bodies 8 and 8a are fixed to both ends of the rod 7, which contact the inner surfaces of the end covers 3 and 3a, respectively, and close the open ends of the main fluid passages 32 and 32a. There is. The valve bodies 8 and 8a are inserted into the large diameter portions 42 and 42a at the open end of the through hole 41, respectively.
I'm starting to get it. The valve bodies 8 and 8a function as poppet valves that open and close the main fluid passage formed in the end cover.

貫通孔41の内周には環状溝43が形成され、その溝内
にはロッド7と係合するQ IJソングール9Cが設け
られている。
An annular groove 43 is formed on the inner periphery of the through hole 41, and a Q IJ song guru 9C that engages with the rod 7 is provided in the groove.

なお9,9aはピストン4,4aの外周に設けられたシ
ール部材である。
Note that 9, 9a are seal members provided on the outer periphery of the pistons 4, 4a.

上記構成の回転駆動装置において、図示の状態で給排ボ
ー)31aに圧力流体を供給しかつ給排ボート31から
流体を排出すると、まず弁体8aが右方に押されて主流
体通路32aを開き、圧力流体はピストン室C2内に入
りピストン4a、4を右方に押す。したがってビニオン
6および駆動軸60は時計回υ方向に回転する。このと
きピストン室C8内の流体は主流体通路32及び絞シ通
路33を介して排出される。
In the rotary drive device having the above configuration, when pressure fluid is supplied to the supply/discharge boat 31a and fluid is discharged from the supply/discharge boat 31 in the illustrated state, the valve body 8a is first pushed to the right to open the main fluid passage 32a. When opened, the pressure fluid enters the piston chamber C2 and pushes the pistons 4a, 4 to the right. Therefore, the pinion 6 and the drive shaft 60 rotate in the clockwise υ direction. At this time, the fluid in the piston chamber C8 is discharged through the main fluid passage 32 and the throttle passage 33.

ピストン4,4aが所定距離移動して弁体8がエンドカ
バー3の内面に当接して主流体通路32を閉じるとピス
トン室C1内の流体は絞り通路33を介してしか排出で
きないのでピストンの移動にブレーキがかかり、ピスト
ンの速度は遅くなる(ピストンにクッション作用が働く
)。そしてピストンに作用するブレーキ(クッション)
の調整は可変絞り弁34のニードル35を調整すること
によって行なう。
When the pistons 4, 4a move a predetermined distance and the valve body 8 comes into contact with the inner surface of the end cover 3 and closes the main fluid passage 32, the fluid in the piston chamber C1 can only be discharged through the throttle passage 33, so the piston moves. The brake is applied, and the speed of the piston slows down (a cushioning effect is applied to the piston). and the brake (cushion) that acts on the piston.
The adjustment is made by adjusting the needle 35 of the variable throttle valve 34.

給排ボート31からピストン室C1に圧力流体を供給す
る場合、ピストン4,4aは左方に移動し、弁体8aが
主流体通路32aを塞いで前述と同様にピストンにクッ
ションカ働り。
When supplying pressure fluid from the supply/discharge boat 31 to the piston chamber C1, the pistons 4 and 4a move to the left, and the valve body 8a closes the main fluid passage 32a, acting as a cushion to the pistons in the same manner as described above.

なおQ IJングシール9Cはロッドが自由に移動する
のを防止するデテント機能をする。捷だクッションの長
さを変えるにはロッド7の長さを変えればよい。
Note that the Q IJ seal 9C has a detent function to prevent the rod from moving freely. In order to change the length of the rounded cushion, the length of the rod 7 can be changed.

本発明による回転駆動装置は次のような効果を奏するこ
とができる。
The rotary drive device according to the present invention can have the following effects.

(イ)小さな構造でも長いストローク範囲にわたってク
ッションをはたらかすことが可能である。
(a) Even with a small structure, it is possible to act as a cushion over a long stroke range.

(ロ)構造が簡単でクッション効果が太きい。(b) The structure is simple and the cushioning effect is strong.

(/ウ  外部ストッパによりビニオンの回転が阻止さ
れて、ピストンがストロークの途中で逆方向に移動した
場合でもポペット弁は供給する圧力流体により移動し、
正常なりツンヨン効果が得られる。
(/C) Even if the rotation of the pinion is prevented by the external stopper and the piston moves in the opposite direction during the stroke, the poppet valve will still be moved by the supplied pressure fluid,
Normally, the Tsuyeon effect can be obtained.

に)始動時のスピードを確保するためのチェック弁が不
要であり、大きな流量が確保できるためスピードの立ち
上りが良い。
2) There is no need for a check valve to ensure the speed at startup, and a large flow rate can be ensured, so the speed rises quickly.

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

図は本発明による回転駆動装置の一実施例の断面図であ
る。 1:回転駆動装置 2ニジリンダチユーブ3.3a:エ
ンドカバー 4,4a:ビストン5ニラツク 6:ビニ
オン 7:コンド8:弁体 31,31a:給排ポート 32.32a:主流体通路 特許出願人  シーケーデイ株式会社 (外4名)
The figure is a cross-sectional view of an embodiment of a rotary drive device according to the present invention. 1: Rotation drive device 2 Niji cylinder tube 3.3a: End cover 4, 4a: Viston 5 Nirak 6: Binion 7: Conduit 8: Valve body 31, 31a: Supply/discharge port 32. 32a: Main fluid passage Patent applicant: CKD Co., Ltd. (4 people)

Claims (1)

【特許請求の範囲】[Claims] シリンダチューブ内に移動可能に設けられたピストンと
、該ピストンに連結されたラックと、該シリンダチュー
ブに回転可能に設けられていて該ラックとかみ合うビニ
オンとを有し、該シリンダチューブ内で該ピストンに作
用する流体圧によりピストンを移動してビニオンを回転
する回転駆動装置において、該シリンダチューブの端部
を塞ぐエンドカバーに給排ボートと通じる主流体通路と
絞り通路とを形成して該主流体通路を該ピストンに向け
て開口させ、該ピストンは該ラックの両端に設けてそれ
らを一体的に固定し、該ピストンには軸方向に貫通する
穴を形成して該軸方同大内にはロフドを該ピストンに関
して相対移動可能に設け、該ロフドの端部には該エンド
カバー内面と接触して該主流体通路の開口端を塞ぐ弁体
を固定したことを特徴とした回転駆動装置。
The piston has a piston movably provided in the cylinder tube, a rack connected to the piston, and a pinion rotatably provided in the cylinder tube and meshing with the rack. In a rotary drive device that moves a piston and rotates a pinion by fluid pressure acting on the cylinder tube, a main fluid passage and a throttle passage communicating with a supply/discharge boat are formed in an end cover that closes the end of the cylinder tube, and the main fluid is A passage is opened toward the piston, the piston is provided at both ends of the rack to fix them together, and the piston is formed with a hole passing through it in the axial direction, and a hole is formed in the same axial direction. 1. A rotary drive device, characterized in that a loft is provided to be movable relative to the piston, and a valve body is fixed to an end of the loft for contacting the inner surface of the end cover and closing an open end of the main fluid passage.
JP4833283A 1983-03-23 1983-03-23 Rotation driving device Pending JPS59175609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4833283A JPS59175609A (en) 1983-03-23 1983-03-23 Rotation driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4833283A JPS59175609A (en) 1983-03-23 1983-03-23 Rotation driving device

Publications (1)

Publication Number Publication Date
JPS59175609A true JPS59175609A (en) 1984-10-04

Family

ID=12800453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4833283A Pending JPS59175609A (en) 1983-03-23 1983-03-23 Rotation driving device

Country Status (1)

Country Link
JP (1) JPS59175609A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100393686B1 (en) * 2000-03-03 2003-08-06 에스엠시 가부시키가이샤 Rotary actuator with cushion mechanism

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS539978A (en) * 1976-07-14 1978-01-28 Nippon Air Brake Co Cushion device for cylinder means

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS539978A (en) * 1976-07-14 1978-01-28 Nippon Air Brake Co Cushion device for cylinder means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100393686B1 (en) * 2000-03-03 2003-08-06 에스엠시 가부시키가이샤 Rotary actuator with cushion mechanism

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