JPH01124509U - - Google Patents
Info
- Publication number
- JPH01124509U JPH01124509U JP1896788U JP1896788U JPH01124509U JP H01124509 U JPH01124509 U JP H01124509U JP 1896788 U JP1896788 U JP 1896788U JP 1896788 U JP1896788 U JP 1896788U JP H01124509 U JPH01124509 U JP H01124509U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- fluid pressure
- enclosure
- permanent magnet
- detecting
- 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
- 239000012530 fluid Substances 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 claims 1
- 238000007740 vapor deposition Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Description
第１図は本考案の一実施例である流体圧シリン
ダの位置検出装置の断面図、第２図はその磁気検
出素子の配置を示す図、第３図ａ，ｂはピストン
の位置による磁気検出素子の磁束の状態を示す概
略説明図、第４図は本考案に用いられる位置検出
回路の回路図、第５図は他の位置検出回路の回路
図、第６図は磁気検出素子の他の配置例を示す図
である。
１……シリンダチユーブ（外囲体）、２……ロ
ツドカバー、３……ヘツドカバー、４……ピスト
ン（作動部材）、５，６……シリンダ室、７……
ピストンロツド、８，９……給排ポート、１０…
…位置検出装置、１１……ケース、１２……樹脂
、１３……永久磁石、１４……磁気検出部材、１
５……リード線、１６……バツフアアンプ、１７
，１７ａ，１７ｂ……コンパレータ、１８，１８
ａ，１８ｂ……ボリユーム、１９……ＡＮＤ回路
、Ａ，Ａ′，Ｂ，Ｂ′……磁気検出素子。
Figure 1 is a sectional view of a position detection device for a fluid pressure cylinder which is an embodiment of the present invention, Figure 2 is a diagram showing the arrangement of its magnetic detection element, and Figures 3a and b are magnetic detection based on the position of the piston. A schematic explanatory diagram showing the state of the magnetic flux of the element, FIG. 4 is a circuit diagram of a position detection circuit used in the present invention, FIG. 5 is a circuit diagram of another position detection circuit, and FIG. 6 is a circuit diagram of another position detection circuit of the magnetic detection element. It is a figure showing an example of arrangement. 1...Cylinder tube (enclosure), 2...Rod cover, 3...Head cover, 4...Piston (operating member), 5, 6...Cylinder chamber, 7...
Piston rod, 8, 9... Supply/discharge port, 10...
... Position detection device, 11 ... Case, 12 ... Resin, 13 ... Permanent magnet, 14 ... Magnetic detection member, 1
5...Lead wire, 16...Buffer amplifier, 17
, 17a, 17b... comparator, 18, 18
a, 18b... Volume, 19... AND circuit, A, A', B, B'... Magnetic detection element.
Claims (1)
けられ、該外囲体内の磁性の作動部材の位置を検
出する装置であつて、ケース内に永久磁石を設け
、この永久磁石の前記作動部材側に、複数個の磁
気検出素子よりなる磁気検出部材を配設したこと
を特徴とする流体圧作動機器の位置検出装置。 ２ 前記磁気検出素子が、蒸着法により作られた
、または単結晶の半導体形の磁気抵抗素子からな
ることを特徴とする請求項１記載の流体圧作動機
器の位置検出装置。[Claims for Utility Model Registration] 1. A device that is provided outside a non-magnetic enclosure of a fluid pressure operating device and detects the position of a magnetic operating member within the enclosure, which device includes a permanent magnet within the case. 1. A position detecting device for a fluid pressure operated device, characterized in that a magnetic detecting member comprising a plurality of magnetic detecting elements is disposed on the operating member side of the permanent magnet. 2. The position detecting device for fluid pressure operated equipment according to claim 1, wherein the magnetic detecting element is made by a vapor deposition method or is made of a single crystal semiconductor type magnetoresistive element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1896788U JPH01124509U (en) | 1988-02-16 | 1988-02-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1896788U JPH01124509U (en) | 1988-02-16 | 1988-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01124509U true JPH01124509U (en) | 1989-08-24 |
Family
ID=31234073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1896788U Pending JPH01124509U (en) | 1988-02-16 | 1988-02-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01124509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008152818A1 (en) * | 2007-06-14 | 2008-12-18 | Panasonic Corporation | Noncontact position sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54143177A (en) * | 1978-04-18 | 1979-11-08 | Nec Corp | Magnetic field detector |
| JPS57131079A (en) * | 1981-02-06 | 1982-08-13 | Matsushita Electric Ind Co Ltd | Magnetic field detecting device |
| JPS5952317B2 (en) * | 1979-09-10 | 1984-12-19 | 史朗 金尾 | flexible hose |
| JPS6080777A (en) * | 1983-10-12 | 1985-05-08 | Hitachi Ltd | Magnetic detector |
-
1988
- 1988-02-16 JP JP1896788U patent/JPH01124509U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54143177A (en) * | 1978-04-18 | 1979-11-08 | Nec Corp | Magnetic field detector |
| JPS5952317B2 (en) * | 1979-09-10 | 1984-12-19 | 史朗 金尾 | flexible hose |
| JPS57131079A (en) * | 1981-02-06 | 1982-08-13 | Matsushita Electric Ind Co Ltd | Magnetic field detecting device |
| JPS6080777A (en) * | 1983-10-12 | 1985-05-08 | Hitachi Ltd | Magnetic detector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008152818A1 (en) * | 2007-06-14 | 2008-12-18 | Panasonic Corporation | Noncontact position sensor |
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