JPS6338704A - Cylinder with brake - Google Patents
Cylinder with brakeInfo
- Publication number
- JPS6338704A JPS6338704A JP18190586A JP18190586A JPS6338704A JP S6338704 A JPS6338704 A JP S6338704A JP 18190586 A JP18190586 A JP 18190586A JP 18190586 A JP18190586 A JP 18190586A JP S6338704 A JPS6338704 A JP S6338704A
- Authority
- JP
- Japan
- Prior art keywords
- piston rod
- voltage
- braking
- cylinder
- brake shoe
- 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
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/28—Electric or magnetic using electrostrictive or magnetostrictive elements, e.g. piezoelectric elements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Braking Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】 及亙立夏 本考案は制動装置付シリンダーに関するものである。[Detailed description of the invention] Ritsuka The present invention relates to a cylinder with a brake device.
従米且血
ピストンロッドの動きを制動する制動装置付シリンダー
は公知である。A cylinder with a brake device for braking the movement of a conventional piston rod is known.
従来のシリンダーではピストンロッドに偏心カムを嵌装
し、そしてカムの回転によりピストンロッドを半径方向
に偏心させる力を作用してＷＪ 擦？ｌ１ｒｔ動する方
法等が講じられている。In conventional cylinders, an eccentric cam is fitted to the piston rod, and the rotation of the cam applies a force that eccentrically shifts the piston rod in the radial direction. Methods such as l1rt operation have been taken.
従来の制動装置付シリンダーは構造が複雑になったり、
ピストンロッドに無理な力を加えて歪を生じたりする問
題があった。Conventional cylinders with brake devices have complicated structures,
There was a problem in that excessive force was applied to the piston rod, causing distortion.
旦み
本発明は構造が簡単で各部に無理な変形を与えるような
事がな（、しかも確実に制動可能なシリンダーを提供す
ることを目的としている。An object of the present invention is to provide a cylinder that has a simple structure, does not cause excessive deformation to any part, and can be braked reliably.
１裟
本発明は上記の目的をピストンロッドに電歪素子を嵌装
し、該電歪素子に電圧印加装置により電圧を印加し、電
歪素子を膨張又は収縮させることによりピストンロッド
を緊締又は弛緩することにより達成した。1) The present invention achieves the above object by fitting an electrostrictive element into a piston rod, applying a voltage to the electrostrictive element by a voltage applying device, and expanding or contracting the electrostrictive element to tighten or loosen the piston rod. Achieved by doing.
本発明の構成及び作用の詳細を図に示す実施例例に基づ
いて説明する。The details of the structure and operation of the present invention will be explained based on embodiments shown in the drawings.
第１図及び第２図においてシリンダチューブ１にピスト
ン２が摺動可能に収容され、該ピストン２に固定された
ピストンロッド３はシリンダチューブ１に固定されたロ
ッドカバー４を貰通して外部に突出している。ロッドカ
バー４に形成された出入口５及びシリンダチューブ１に
固定されたヘンドカバー６に形成された出入ロアに交互
に加圧流体を供給排出することによりピストン２が往復
動される。1 and 2, a piston 2 is slidably housed in a cylinder tube 1, and a piston rod 3 fixed to the piston 2 passes through a rod cover 4 fixed to the cylinder tube 1 and projects to the outside. ing. The piston 2 is reciprocated by alternately supplying and discharging pressurized fluid to an inlet/outlet port 5 formed in the rod cover 4 and an inlet/outlet lower portion formed in a hend cover 6 fixed to the cylinder tube 1.
ロッドカバー４に固定されるブレーキケーシング８の中
に制動装置９が収容される。A brake device 9 is housed in a brake casing 8 fixed to the rod cover 4.
制動装？ｉ！９はピストンロッド３に嵌装された円筒状
ブレーキシュー１０と該円筒状ブレーキシュー１０のま
わりに嵌装され、ピストンロッドの軸線方向に層状に並
置された複数のリング状電歪素子１１と該電歪素子の間
に形成される電極１２と該電極１２に接続される電線１
３．１４と該電線１３．１４に接続される電圧印加装置
１５とを有する。Brake gear? i! Numeral 9 includes a cylindrical brake shoe 10 fitted to the piston rod 3, a plurality of ring-shaped electrostrictive elements 11 fitted around the cylindrical brake shoe 10, and arranged in layers in the axial direction of the piston rod. An electrode 12 formed between the electrostrictive elements and an electric wire 1 connected to the electrode 12
3.14 and a voltage application device 15 connected to the electric wire 13.14.
円筒状ブレーキシュー１０はスリット１６を有し、ピス
トンロッド３に対する締付力を半径方向の変形により容
易に変えることができるようにするのがよい。スリット
１６は軸線方向に延びる１本のスリットでもよ（複数の
スリットを千鳥状に多数配列してもよく、周方向に収縮
しやすい形状なら適宜選定できる。場合によっては円筒
状ブレーキシュー１０を省略しリング状電歪素子をベレ
ーキシューと兼用させることもできる。It is preferable that the cylindrical brake shoe 10 has a slit 16 so that the clamping force on the piston rod 3 can be easily changed by deformation in the radial direction. The slit 16 may be a single slit extending in the axial direction (multiple slits may be arranged in a staggered manner, or any shape that is easily contracted in the circumferential direction may be selected as appropriate. In some cases, the cylindrical brake shoe 10 may be omitted. The ring-shaped electrostrictive element can also be used as a bereke shoe.
電歪素子１１間の電極１２は交互に電線１４により電圧
印加装置の（＋）極に接続されるものと電線１３により
電圧印加装置１５の（−）極に接続されるものとに分け
られる。各電歪素子１１には周縁の一部に電線１３を通
すことのできる凹部１７と電線１４を通すことのできる
凹部１８とが形成される。The electrodes 12 between the electrostrictive elements 11 are alternately divided into those connected to the (+) pole of the voltage application device by electric wires 14 and those connected to the (−) pole of the voltage application device 15 by electric wires 13. A recess 17 through which the electric wire 13 can pass and a recess 18 through which the electric wire 14 can pass are formed in a part of the periphery of each electrostrictive element 11.
ブレーキシュー１０又は電歪素子１１の内周とピストン
ロッド３の外周を互いに嵌合する円筒状とするのに対し
、第３図に示すように多角形に形成し、ブレーキシュー
１０又は電歪素子１１とピストンロッド３との間を相対
回転できないようにすることもできる。Whereas the inner periphery of the brake shoe 10 or the electrostrictive element 11 and the outer periphery of the piston rod 3 are formed into a cylindrical shape that fits into each other, they are formed into a polygonal shape as shown in FIG. It is also possible to prevent relative rotation between the piston rod 11 and the piston rod 3.
制動装置９は普通はピストンロッド３に対しては遊ヒ嵌
めされ、ピストンロッド３の自由回転を保証するように
形成した電歪素子１１を用い、制動したいときは電圧印
加装置１５により電圧を印加して電歪素子１１に収縮歪
を起こさせて直接又はブレーキシュー１０を介してピス
トンロッド３を緊締する構造とすることもできるが、逆
に普通はピストンロッド３を緊締するようにブレーキシ
ュー１０に締り嵌めされた電歪素子１１を用い、電圧を
印加することにより電歪素子１１に膨張歪を起こさせて
ピストンロッド３に対する緊締力を解除してピストンロ
ッド３を自由に回動できるように構成することもできる
。後者の場合は無電圧時に制動作用をするので停電時や
工場体［Ｆ等の際にピストンロッドの移動を防ぎたい場
合に好都合であり、安全なブレーキとして作用する。The braking device 9 is normally loosely fitted to the piston rod 3, and uses an electrostrictive element 11 formed to ensure free rotation of the piston rod 3. When braking is desired, a voltage is applied by a voltage applying device 15. It is also possible to have a structure in which the piston rod 3 is tightened directly or via the brake shoe 10 by causing the electrostrictive element 11 to undergo contraction strain, but conversely, normally the brake shoe 10 is tightened so as to tighten the piston rod 3. By applying a voltage, the electrostrictive element 11 tightly fitted is used to cause expansion strain in the electrostrictive element 11, thereby releasing the tightening force on the piston rod 3 and allowing the piston rod 3 to rotate freely. It can also be configured. In the latter case, since the braking action is performed when there is no voltage, it is convenient when it is desired to prevent the piston rod from moving during a power outage or during a factory assembly [F], and it acts as a safe brake.
電歪素子としてはセラミックａ９坂を積層接着して形成
される圧電アクチュエータ等が知られている。As an electrostrictive element, a piezoelectric actuator formed by laminating and bonding ceramic A9 slopes is known.
電歪素子は大出力、小変形の特性を有するので上記の制
動装置には最も通している。Since electrostrictive elements have the characteristics of high output and small deformation, they are most commonly used in the above-mentioned braking devices.
制動装置の電圧印加装置は所定の電圧を直接印加して制
動状態と制動解除状態との間の切換を行うのに対し、制
動開始、制動解除を徐々に行うようにすると、ピストン
ロッドの速度が徐々に変化するので、停止位置精度を高
めることができる。The voltage application device of a braking device directly applies a predetermined voltage to switch between a braking state and a braking release state, whereas if the braking is started and released gradually, the speed of the piston rod increases. Since it changes gradually, it is possible to improve the accuracy of the stopping position.
その具体例としては第４図に示すように、制動状態にお
いて、電圧をパルス状に短時間宛印加する。As a specific example, as shown in FIG. 4, a voltage is applied in a pulsed manner for a short period of time in a braking state.
これにより電歪素子１１は歪を電圧印加毎に少しずつ生
じ制動力を徐々に弱める。制動力が弱まるにしたがい、
ピストン２に加わる力により制動抵抗に抗しながらピス
トンロッド３が動・きはじめ、しかも徐々に増速し、所
定時間後、すなわち所定回数のパルス的電圧印加の繰り
返しの後に電歪素子１１は全てが完全に歪んだ状態にり
、制動力を解除してピストンロッド３は定速度で移動す
る。As a result, the electrostrictive element 11 causes strain little by little each time a voltage is applied, gradually weakening the braking force. As the braking force weakens,
The piston rod 3 begins to move while resisting braking resistance due to the force applied to the piston 2, and gradually increases its speed, and after a predetermined period of time, that is, after repeating the pulsed voltage application a predetermined number of times, the electrostrictive element 11 is completely moved. The piston rod 3 is completely distorted, the braking force is released, and the piston rod 3 moves at a constant speed.
停止トする際も同様にしてパルス状に短時間充電圧を印
可し、徐々に制動力を加え、ピストンロノド３の速度を
減速し、所定時間後に全開りＪ状態に達する。ピストン
ロッドは急激に停止ヒされるのでなく、慣性の影響を殆
ど受けないので停止上位置は殆ど正確に定めた位置に保
持される。When stopping, similarly, charging pressure is applied in a pulsed manner for a short period of time, braking force is gradually applied, the speed of the piston rod 3 is reduced, and the fully open J state is reached after a predetermined time. Since the piston rod is not stopped abruptly and is hardly affected by inertia, the upper stop position is maintained at an almost precisely determined position.
塗来
本発明によりリング伏電歪素子を用いる簡単な構造で小
さな電圧で大きな緊張力を得ることができ、確実な制動
効果が得られる。しかも各部部材に無理な変形力を生じ
ることなく安定した装置が得られた。According to the present invention, a large tension force can be obtained with a small voltage with a simple structure using a ring-shaped electrostrictive element, and a reliable braking effect can be obtained. Moreover, a stable device was obtained without causing any unreasonable deformation force to the various parts and members.
第１図は本発明に係るシリンダの断面図、第２図は第１
図のｎ−ｎ断面図、第３図は第２図におけるピストンロ
ッドとブレーキシューの変形例を示す図、第４図は電圧
印可状態の一例を示す図である。
３・・・ピストンロッド ９・・・制動装置１０・・
・ブレーキシュー １１・・・電歪素子１２・・・電極
１３．１４・・・電線代理人弁理を伊Ｍ″
６”じス２（邪
第２図
第３図
第４図Figure 1 is a sectional view of a cylinder according to the present invention, and Figure 2 is a cross-sectional view of a cylinder according to the present invention.
3 is a diagram showing a modification of the piston rod and brake shoe in FIG. 2, and FIG. 4 is a diagram showing an example of a voltage application state. 3... Piston rod 9... Braking device 10...
・Brake shoe 11...Electrostrictive element 12...Electrode 13.14...Electric wire agent patent attorney
6” Jisu 2 (evil 2 3 4
Claims (2)
におて、制動装置がピストンロッドに嵌装され軸線方向
に並置された複数個のリング状電歪素子と、該電歪素子
に接続された電圧印加装置により形成されていることを
特徴とする制動装置付シリンダー。(1) In a cylinder with a braking device that brakes a piston rod, the braking device is fitted to the piston rod and includes a plurality of ring-shaped electrostrictive elements arranged in parallel in the axial direction, and a voltage connected to the electrostrictive elements. A cylinder with a braking device, characterized in that it is formed by an application device.
ンロッドを緊締し制動するように寸法を設定され、電圧
印加による膨張によりピストンロッドとの間に間隙を生
じ制動を解除することを特徴とする特許請求の範囲第１
項に記載の制動装置付シリンダー。(2) The electrostrictive element of the braking device is dimensioned so that it tightens and brakes the piston rod when no voltage is applied, and when it expands when voltage is applied, it creates a gap between it and the piston rod and releases the braking. Claim No. 1
Cylinder with a braking device as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18190586A JPS6338704A (en) | 1986-08-04 | 1986-08-04 | Cylinder with brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18190586A JPS6338704A (en) | 1986-08-04 | 1986-08-04 | Cylinder with brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6338704A true JPS6338704A (en) | 1988-02-19 |
| JPH0418167B2 JPH0418167B2 (en) | 1992-03-27 |
Family
ID=16108938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18190586A Granted JPS6338704A (en) | 1986-08-04 | 1986-08-04 | Cylinder with brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6338704A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02110705U (en) * | 1989-02-23 | 1990-09-05 |
-
1986
- 1986-08-04 JP JP18190586A patent/JPS6338704A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02110705U (en) * | 1989-02-23 | 1990-09-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0418167B2 (en) | 1992-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |