JPS5895202A - Piston position detector - Google Patents
Piston position detectorInfo
- Publication number
- JPS5895202A JPS5895202A JP19343581A JP19343581A JPS5895202A JP S5895202 A JPS5895202 A JP S5895202A JP 19343581 A JP19343581 A JP 19343581A JP 19343581 A JP19343581 A JP 19343581A JP S5895202 A JPS5895202 A JP S5895202A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- magnetic scale
- reading head
- piston position
- cylinder
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2861—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using magnetic means
Abstract
Description
【発明の詳細な説明】
本発明は空気圧若しくは油圧シリンダー装置、特にその
ピストン位置検出装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in pneumatic or hydraulic cylinder devices, and in particular to piston position detection devices thereof.
空気圧若しくは油圧シリンダー装置においては。In pneumatic or hydraulic cylinder equipment.
そのビストノロッドの動作速度、停止位置等の制御２行
なうため、ピストンの位置検出用センサー？上記シリン
ダー装置に組込み、或（・は更にピストンの動きを止め
るためのブレーキ２設けることによりピストンの位置分
検出し、制御回路によってその検出イｇ＠に応答して電
磁弁ン開閉し、空気又は油等の流体の流れを制御し、場
合によってはブレーキ２作動せしめるようにしている。A sensor for detecting the position of the piston is used to control the operating speed, stopping position, etc. of the biston rod. The position of the piston is detected by incorporating it into the above-mentioned cylinder device, or by further providing a brake 2 to stop the movement of the piston, and the control circuit opens and closes the electromagnetic valve in response to the detected signal, thereby releasing air or air. It controls the flow of fluid such as oil, and in some cases activates the brake 2.
而してかかる場合、従来の装置は第１図に示す如くピス
トン位置を間接的に検出する構成となっていた。同図に
お（・て、１は空気圧（又は油圧）シリンダー、２はピ
ストンロッド、３は負荷ロッド、４は磁気スケール、５
はブレーキ、６は連結部材である。In such a case, the conventional device is configured to indirectly detect the piston position as shown in FIG. In the same figure, 1 is a pneumatic (or hydraulic) cylinder, 2 is a piston rod, 3 is a load rod, 4 is a magnetic scale, and 5
is a brake, and 6 is a connecting member.
空気圧シリンダー１のピストンロッド２は連結部材６に
よって負荷ロッド３に連結され１Ｍｉ気スケスケール４
ロッド３よりピストンロッド２に連動するようになって
いて、該磁気スケール４と図示していない読取ヘッドと
の相対移動に伴なって該ヘッドによりピストン位置検出
信号が１１られる。The piston rod 2 of the pneumatic cylinder 1 is connected to the load rod 3 by a connecting member 6, and the piston rod 2 of the pneumatic cylinder 1 is
The rod 3 is linked to the piston rod 2, and as the magnetic scale 4 and a reading head (not shown) move relative to each other, a piston position detection signal 11 is generated by the head.
しかし二のような従来の構成によると、精度が悪く、ま
た連結部材、負荷ロッド等の部材を要し、部品点数が多
くなり、構造も抜雑となるばかりでなく、磁気スケール
が露出する構造なので、耐環境性が良くなかった。However, the conventional configuration shown in 2 has poor accuracy, requires connecting members, load rods, etc., increases the number of parts, has a sloppy structure, and has a structure in which the magnetic scale is exposed. Therefore, the environmental resistance was not good.
本発明はかかる従来技術の欠点を改良するためになさＩ
ｔＴこもので、ピストン位置を検出するための磁気スケ
ール及び又は発磁体とその読取ヘッドとをシリンダーに
直接設けろよう［構成したことを特徴とする。The present invention has been made to improve the drawbacks of the prior art.
A magnetic scale and/or a magnetic generator and its reading head for detecting the piston position may be provided directly on the cylinder.
以下図面に示す実施例り参照して本発明を説明すると、
第２図において、］０は空気圧シリンダー、１】はシリ
ンダ一本体、１２はピストン、１３はピストンロッド、
１４及び１５はヘッドカバー、】６は磁気スケール、１
７は読取ヘッド、１８はケーブル、１９は筒体、２０及
び２１は空気通路である。The present invention will be described below with reference to embodiments shown in the drawings.
In Fig. 2,] 0 is a pneumatic cylinder, 1 is a cylinder body, 12 is a piston, 13 is a piston rod,
14 and 15 are head covers, ]6 is a magnetic scale, 1
7 is a reading head, 18 is a cable, 19 is a cylinder, and 20 and 21 are air passages.
磁気スケール１６及び読取ヘッド１７は公知のものであ
って一磁気スケール１６の一端はヘッドカバー１５に、
また読取ヘッド１７はピストンＩ２に夫々取付けである
。ピストンロッド】３は中空であって、その中空部内に
筒体１９が配設されていて、読取ヘッド１７からのケー
ブル１８が上記中空部内周面と筒体１９との間を通つ（
外部に導出されている。The magnetic scale 16 and the reading head 17 are of a known type, and one end of the magnetic scale 16 is attached to the head cover 15.
Further, the reading heads 17 are respectively attached to the pistons I2. The piston rod 3 is hollow, and a cylindrical body 19 is disposed within the hollow part, and a cable 18 from the reading head 17 passes between the inner peripheral surface of the hollow part and the cylindrical body 19.
Externally derived.
磁気スケール１６はピストン１２の移動に一件な（・図
示の如く読取ヘッド１７及び筒体］９の内部に入り込む
ようになり、該ヘッドによるピストン位置検出信号がケ
ーブル１８に介して外部に取出される。The magnetic scale 16 comes to enter the interior of the piston 12 (reading head 17 and cylinder body as shown) 9, and the piston position detection signal from the head is taken out to the outside via the cable 18. Ru.
第３図は本発明の他の実施例で、第２図と同一符号は同
−又は類似の部材？あられしている。二の実施例におい
て１Ｍｉ気スケスケール１６ストンロッド１３の一部１
例えばその外周面に磁性層＋６’に作るか、ロンド￥磁
性材料で形成し、一定波長の電気信号で磁化したものか
ら成る。読取ヘッド１７は一方のヘッドカバー１４内に
埋設するか、或いはその側面に取付ける。二の場合、上
記スケールとヘッドとの間隙は磁気相互作用が及び得る
（回内とする二と勿論である。FIG. 3 shows another embodiment of the present invention, and the same reference numerals as in FIG. 2 indicate the same or similar members. It's raining. In the second embodiment, a part 1 of a 1Mi air scale 16 stone rod 13
For example, a magnetic layer +6' may be formed on the outer peripheral surface, or it may be formed of a rond magnetic material and magnetized by an electric signal of a certain wavelength. The reading head 17 is embedded in one of the head covers 14 or attached to the side thereof. In the second case, the gap between the scale and the head can be affected by magnetic interaction (of course, in the second case of pronation).
前記磁性層１６′は磁性又は非磁性材のロッドに強磁性
合金１例えばＮｉ −（：ｏのメッキを施し、更にその
上にりσムメツキ髪施して形成する。そして該磁性層に
は、ロッドが磁性材料から成る場合は垂直磁気記録、非
磁性材料から成る場合は水平磁気記録ＩＣより磁気格子
を形成する。なお、前記りａムメノキは摺動面の強化？
目的とした処理である。The magnetic layer 16' is formed by plating a ferromagnetic alloy 1, such as Ni - (:o) on a rod of magnetic or non-magnetic material, and then applying a sigma plating on the rod. If it is made of magnetic material, a magnetic lattice is formed by perpendicular magnetic recording, and if it is made of non-magnetic material, by horizontal magnetic recording.It should be noted that a.
This is the intended processing.
本実施例では磁気スケールが移動側となる。In this embodiment, the magnetic scale is on the moving side.
第４図は本発明の更に他の実施例で、第２図と同一符号
は同−又は類似の部材りあられす。二の実施例では、シ
リンダ一本体１］が非磁性材料より成り、その外周面に
磁気スケール１６が貼付され、読取ヘッド１７はピスト
ン２に取付られていて、該ヘッドからのケーブル】８は
第２図と同様な’ｆＮ’ｌｔｉにより外部ＶＣ導出され
ている。二の場合も上記磁気スケールと読取ヘッドとの
間隙？磁気相互作用が及び得る節回内［設定する。FIG. 4 shows yet another embodiment of the invention, in which the same reference numerals as in FIG. 2 represent the same or similar parts. In the second embodiment, the cylinder body 1] is made of a non-magnetic material, a magnetic scale 16 is attached to its outer circumferential surface, a reading head 17 is attached to the piston 2, and a cable ]8 from the head is attached to the piston 2. The external VC is derived by 'fN'lti similar to that in Figure 2. In the second case, is there a gap between the magnetic scale and the reading head? Nodal pronation [set up] where magnetic interaction can reach.
なお、上記各実！＠例において、ピストン移動〔回内の
特定点を検出するために発磁体（磁石）？磁気スケール
に代えて、或いはこれと共に用いてもよい。また本発明
は空気圧シリンダー装置だけでなく、油圧シリンダー装
置等にも適用できる二と明らかである。In addition, each of the above fruits! @In the example, piston movement [magnet to detect a specific point of pronation? It may be used in place of or in conjunction with a magnetic scale. It is also obvious that the present invention can be applied not only to pneumatic cylinder devices but also to hydraulic cylinder devices and the like.
以上説明し１こよ５に本発明によれば、ピストン位置検
出手段乞シリンダー装置に直接設ける構成となっている
ので、任意の位置でかつ多点の停止位置設定が可能であ
り１位置決め精度も向上すると共に全体構成もコンパク
ト化され、使用上有利であって、しかも部品点数が削減
できるので低コストとなし得る。As explained above, in accordance with the present invention, since the piston position detection means is directly provided in the cylinder device, it is possible to set the stop position at any position and at multiple points, and the positioning accuracy is also improved. At the same time, the overall configuration is compact, which is advantageous in use, and the number of parts can be reduced, resulting in low cost.
第１図は従来のシリンダー装置の概略構成図。
第２図は本発明の一実施例り示す概略構成図、第１
１ 特 許 出 願 人 ソニーマグネス
ケール株式会社特開昭５８−９５２０２（３）FIG. 1 is a schematic diagram of a conventional cylinder device. Figure 2 is a schematic configuration diagram showing one embodiment of the present invention, No. 11 Patent Applicant: Sony Magnescale Co., Ltd. JP-A-58-95202 (3)
Claims (4)
て°、ピストン位置検出手段タシリンダー装置を構
！ 成する部材に直接設けた二とｔ！：特徴とするピ
スト迅 ｉ ン位置検出装置。(1) In cylinder devices such as pneumatic or hydraulic pressure)
The piston position detection means is a cylinder device! 2 and t installed directly on the component that forms the part! :Featured piston position detection device.
読取ヘッドとから成り、該読取ヘッドはビ２トンに取付
けられ、ピストンの移動に伴ない上記磁気スケールがピ
ストンミツド内に入り二むように構成された二とり特徴
とする特許請求の範囲第１ＪＪ記載のピスト／位置検出
装置。(2) The piston position detecting means is composed of a magnetic scale and a reading head, and the reading head is attached to a biton and is configured so that the magnetic scale enters into the piston mid as the piston moves. A piston/position detection device according to claim 1 JJ.
読取ヘッドとから成り、該磁気スケールはビストノロッ
ド又はシリンダ一本体の外周面に形成されたこと２特徴
とする特許請求の範囲第１頓記載のピストン位置検出装
置。(3) The piston position detection means according to claim 1, wherein the piston position detection means comprises a magnetic scale and a reading head, and the magnetic scale is formed on the outer peripheral surface of a biston rod or a cylinder body. Detection device.
該筒体と上記ビストノロッド中空部内面との間隙り介し
て前記読取ヘッドからのケーブル？外部に導出するよ、
うに構成し１こ二と２特徴とする特許請求の範囲第２項
、記載のピストン位置検出装置。(4) A cylinder is installed in the hollow part of the Fuuki piston rond,
The cable from the reading head is passed through the gap between the cylinder and the inner surface of the hollow part of the biston rod. I'll bring it out to the outside.
A piston position detecting device as set forth in claim 2, wherein the piston position detecting device is constructed as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19343581A JPS5895202A (en) | 1981-12-01 | 1981-12-01 | Piston position detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19343581A JPS5895202A (en) | 1981-12-01 | 1981-12-01 | Piston position detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5895202A true JPS5895202A (en) | 1983-06-06 |
Family
ID=16307930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19343581A Pending JPS5895202A (en) | 1981-12-01 | 1981-12-01 | Piston position detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5895202A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6077802U (en) * | 1983-11-02 | 1985-05-30 | ソニーマグネスケール株式会社 | Piston position detection device |
| DE3602345A1 (en) * | 1985-02-01 | 1986-08-07 | Yamato Scale Co. Ltd., Akashi, Hyogo | AREA CORRECTION DEVICE FOR A SCALE |
| US5455509A (en) * | 1990-10-26 | 1995-10-03 | Kabushiki Kaisha Komatsu Seisakusho | Device for mounting position detecting sensor |
| JP2002143651A (en) * | 2000-11-10 | 2002-05-21 | Nok Corp | Hollow fiber membrane module |
| US6989669B2 (en) | 2003-05-06 | 2006-01-24 | Sri International | Systems and methods of recording piston rod position information in a magnetic layer on a piston rod |
| CN1296183C (en) * | 1999-07-07 | 2007-01-24 | 速睦喜股份有限公司 | Holder head with position detection function |
| WO2007029880A1 (en) * | 2005-09-09 | 2007-03-15 | Kayaba Industry Co., Ltd. | Cylinder device |
| US7259553B2 (en) | 2005-04-13 | 2007-08-21 | Sri International | System and method of magnetically sensing position of a moving component |
| CN102011763A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Hydraulic cylinder for driving self-mounting oil production platform to lift |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5630602A (en) * | 1979-08-18 | 1981-03-27 | Bosch Gmbh Robert | Device for measuring distance or speed without contact |
-
1981
- 1981-12-01 JP JP19343581A patent/JPS5895202A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5630602A (en) * | 1979-08-18 | 1981-03-27 | Bosch Gmbh Robert | Device for measuring distance or speed without contact |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6077802U (en) * | 1983-11-02 | 1985-05-30 | ソニーマグネスケール株式会社 | Piston position detection device |
| DE3602345A1 (en) * | 1985-02-01 | 1986-08-07 | Yamato Scale Co. Ltd., Akashi, Hyogo | AREA CORRECTION DEVICE FOR A SCALE |
| US5455509A (en) * | 1990-10-26 | 1995-10-03 | Kabushiki Kaisha Komatsu Seisakusho | Device for mounting position detecting sensor |
| CN1296183C (en) * | 1999-07-07 | 2007-01-24 | 速睦喜股份有限公司 | Holder head with position detection function |
| JP2002143651A (en) * | 2000-11-10 | 2002-05-21 | Nok Corp | Hollow fiber membrane module |
| US7034527B2 (en) | 2003-05-06 | 2006-04-25 | Sri International | Systems of recording piston rod position information in a magnetic layer on a piston rod |
| US6989669B2 (en) | 2003-05-06 | 2006-01-24 | Sri International | Systems and methods of recording piston rod position information in a magnetic layer on a piston rod |
| US7259553B2 (en) | 2005-04-13 | 2007-08-21 | Sri International | System and method of magnetically sensing position of a moving component |
| JP2008536145A (en) * | 2005-04-13 | 2008-09-04 | エスアールアイ インターナショナル | System and method for magnetically sensing the position of a moving component |
| WO2007029880A1 (en) * | 2005-09-09 | 2007-03-15 | Kayaba Industry Co., Ltd. | Cylinder device |
| JP2007071363A (en) * | 2005-09-09 | 2007-03-22 | Kayaba Ind Co Ltd | Cylinder device |
| KR100972268B1 (en) | 2005-09-09 | 2010-07-23 | 카야바 고교 가부시기가이샤 | Cylinder device |
| JP4733481B2 (en) * | 2005-09-09 | 2011-07-27 | カヤバ工業株式会社 | Cylinder device |
| CN102011763A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Hydraulic cylinder for driving self-mounting oil production platform to lift |
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