JPH0736245Y2 - Stroke sensor for hydraulic / pneumatic cylinder - Google Patents
Stroke sensor for hydraulic / pneumatic cylinderInfo
- Publication number
- JPH0736245Y2 JPH0736245Y2 JP1986193294U JP19329486U JPH0736245Y2 JP H0736245 Y2 JPH0736245 Y2 JP H0736245Y2 JP 1986193294 U JP1986193294 U JP 1986193294U JP 19329486 U JP19329486 U JP 19329486U JP H0736245 Y2 JPH0736245 Y2 JP H0736245Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic sensor
- piston rod
- hydraulic
- sensor
- 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.)
- Expired - Lifetime
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Actuator (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） この考案は、油圧および空圧シリンダのストロークを検
出するセンサに関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a sensor for detecting strokes of hydraulic and pneumatic cylinders.
（従来の技術） 油空圧シリンダを摺動するピストンロッドの側面部に所
定のピッチで溝を刻設して磁気スケールを形成し、この
磁気スケールを磁気センサで読み取ることにより、ピス
トンロッドのストロークを検出する装置がある（特開昭
60-120214号公報等参照）。(Prior Art) The stroke of the piston rod is formed by forming grooves on the side surface of the piston rod that slides on the hydraulic / pneumatic cylinder at a predetermined pitch to form a magnetic scale, and reading this magnetic scale with a magnetic sensor. There is a device for detecting
60-120214 gazette etc.).
ところで、このような装置では、例えば第３図に示すよ
うにシリンダ１のヘッド部に設けた穴２に磁気センサ３
がブッシュ４を介して挿入されると共に、カバー５との
間に介装した弾性リング６を介してブッシュ４の先端が
ピストンロッド７の側面に押接され、これにより磁気セ
ンサ３とピストンロッド７との所定の間隙を保つこと
で、磁気センサ３の安定した性能を得るようにしてい
る。By the way, in such a device, for example, as shown in FIG. 3, the magnetic sensor 3 is provided in the hole 2 provided in the head portion of the cylinder 1.
Is inserted through the bush 4, and the tip of the bush 4 is pressed against the side surface of the piston rod 7 through an elastic ring 6 interposed between the magnetic sensor 3 and the piston rod 7. By maintaining a predetermined gap between and, stable performance of the magnetic sensor 3 is obtained.
（考案が解決しようとする問題点） ところが、磁気センサ３とピストンロッド７との間隙を
保つブッシュ４は、磁気センサ３の基部８に合わせて内
側に段付部９が設けられているため、段付部９の加工が
やりづらく、前記所定の間隙を保つためのブッシュ４の
先端から段付部９までの寸法精度に誤差が生じやすいと
いう問題があった。(Problems to be Solved by the Invention) However, since the bush 4 which keeps the gap between the magnetic sensor 3 and the piston rod 7 is provided with the stepped portion 9 inside so as to match the base portion 8 of the magnetic sensor 3, There is a problem that it is difficult to process the stepped portion 9, and an error easily occurs in the dimensional accuracy from the tip of the bush 4 for maintaining the predetermined gap to the stepped portion 9.
（問題点を解決するための手段） この考案は、上記問題点を解消するため、ピストンロッ
ドの外周に磁気スケールを形成し、この磁気スケールに
近接して磁気センサを設置した油空圧シリンダのストロ
ークセンサにおいて、ピストンロッドと摺接する非磁性
部材を、磁気センサ先端部の磁気感知面に直接被着す
る。(Means for Solving the Problems) In order to solve the above problems, the present invention discloses a hydraulic / pneumatic cylinder in which a magnetic scale is formed on the outer circumference of a piston rod and a magnetic sensor is installed close to the magnetic scale. In the stroke sensor, a non-magnetic member that is in sliding contact with the piston rod is directly attached to the magnetic sensing surface of the tip of the magnetic sensor.
（実施例） 第１図は本考案の実施例を示す要部断面図で、10はシリ
ンダ（ヘッド部を表す）、11は側面部に磁気スケール
（図示しない）を形成したピストンロッド、12は磁気セ
ンサである。(Embodiment) FIG. 1 is a sectional view showing an essential part of an embodiment of the present invention. 10 is a cylinder (representing a head portion), 11 is a piston rod having a magnetic scale (not shown) formed on a side surface portion, and 12 is a piston rod. It is a magnetic sensor.
磁気センサ12は、先端部13に非磁性部材であるキャップ
14が装着され、シリンダ10に設けた穴15に挿入される。
このキャップ14は非磁性体の所定板厚の薄板からプレス
加工等により形成される。The magnetic sensor 12 has a cap, which is a non-magnetic member, at the tip 13.
14 is mounted and inserted into the hole 15 provided in the cylinder 10.
The cap 14 is formed from a non-magnetic thin plate having a predetermined plate thickness by pressing or the like.
そして、磁気センサ12の基部16にかぶさって磁気センサ
12の位置ずれを防ぐ筒状のホルダ17が穴15に嵌挿される
と共に、カバー18との間にホルダ17、磁気センサ12を介
してその先端部13のキャップ14をピストンロッド11の側
面に押接するスプリング19が介装される。Then, the magnetic sensor is mounted on the base 16 of the magnetic sensor 12.
A cylindrical holder 17 for preventing displacement of 12 is inserted into the hole 15, and the cap 14 of the tip portion 13 is pushed to the side surface of the piston rod 11 via the holder 17 and the magnetic sensor 12 between the holder 18 and the cover 18. The contacting spring 19 is interposed.
また、磁気センサ12の回り止めを行うように、磁気セン
サ12の基部16に溝20が形成され、この溝20に係合するピ
ン21がホルダ17に取り付けられる。A groove 20 is formed in the base 16 of the magnetic sensor 12 so as to prevent the magnetic sensor 12 from rotating, and a pin 21 that engages with the groove 20 is attached to the holder 17.
なお、図示しないがホルダ17とカバー18との間に位置決
めピンが設けられる。Although not shown, a positioning pin is provided between the holder 17 and the cover 18.
したがって、磁気センサ12とピストンロッド11との間隙
は、キャップ14を形成する薄板の板厚によって定まるた
め、従来例のように加工がやりづらいということはな
く、また薄板の厚さは高精度で確保できるため、磁気セ
ンサ12とピストンロッド11との間隙を所定の寸法に正確
に設定することができ、この結果磁気センサ12の性能を
向上することができる。Therefore, since the gap between the magnetic sensor 12 and the piston rod 11 is determined by the thickness of the thin plate forming the cap 14, it is not difficult to process as in the conventional example, and the thickness of the thin plate is highly accurate. Since this can be ensured, the gap between the magnetic sensor 12 and the piston rod 11 can be accurately set to a predetermined dimension, and as a result, the performance of the magnetic sensor 12 can be improved.
第２図は本考案の他の実施例を示すもので、磁気センサ
12の先端部13に非磁性体の所定板厚の薄板からなる円板
22を接着したものである。このようにすれば、より加工
性が向上する。FIG. 2 shows another embodiment of the present invention, which is a magnetic sensor.
A disk made of a non-magnetic thin plate with a predetermined thickness at the tip 13 of the 12
22 is glued. By doing so, the workability is further improved.
（考案の効果） 以上のように本考案によれば、ピストンロッドと摺接す
る非磁性部材を、磁気センサ先端部の磁気感知面に直接
被着したので、磁気センサとピストンロッドとの間隙を
容易かつ正確に設定することができ、したがってセンサ
の性能が向上するという効果が得られる。As described above, according to the present invention, the non-magnetic member that is in sliding contact with the piston rod is directly attached to the magnetic sensing surface of the tip of the magnetic sensor, so that the gap between the magnetic sensor and the piston rod can be easily formed. In addition, it is possible to set accurately, and therefore, the effect that the performance of the sensor is improved is obtained.
第１図は本考案の実施例を示す要部断面図、第２図は本
考案の他の実施例を示す部分側面図、第３図は従来例の
要部断面図である。 10……シリンダ、11……ピストンロッド、12……磁気セ
ンサ、13……先端部、14……キャップ、22……円板。FIG. 1 is a sectional view showing an essential part of an embodiment of the present invention, FIG. 2 is a partial side view showing another embodiment of the present invention, and FIG. 3 is a sectional view of an essential part of a conventional example. 10 …… Cylinder, 11 …… Piston rod, 12 …… Magnetic sensor, 13 …… Tip, 14 …… Cap, 22 …… Disc.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭56−30602（ＪＰ，Ａ) 実開 昭53−59844（ＪＰ，Ｕ) 実開 昭54−86059（ＪＰ，Ｕ) 実開 昭56−27614（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-56-30602 (JP, A) Actually open 53-59844 (JP, U) Actually open 54-86059 (JP, U) Actually open 56- 27614 (JP, U)
Claims (1)
成し、この磁気スケールに近接して磁気センサを設置し
た油空圧シリンダのストロークセンサにおいて、ピスト
ンロッドと摺接する非磁性部材を、磁気センサ先端部の
磁気感知面に直接被着したことを特徴とする油空圧シリ
ンダのストロークセンサ。1. In a stroke sensor of a hydraulic / pneumatic cylinder in which a magnetic scale is formed on the outer circumference of a piston rod, and a magnetic sensor is installed close to the magnetic scale, a non-magnetic member that is in sliding contact with the piston rod is attached to the tip of the magnetic sensor. Stroke sensor for hydraulic / pneumatic cylinders, which is directly attached to the magnetic sensing surface of the cylinder.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986193294U JPH0736245Y2 (en) | 1986-12-16 | 1986-12-16 | Stroke sensor for hydraulic / pneumatic cylinder |
| US07/130,821 US4839591A (en) | 1986-12-16 | 1987-12-09 | Magnetic stroke sensor for detecting the stroke of a fluid-power cylinder |
| EP87118581A EP0271878B1 (en) | 1986-12-16 | 1987-12-15 | Stroke sensor for a fluid-power cylinder |
| DE3789366T DE3789366T2 (en) | 1986-12-16 | 1987-12-15 | Stroke sensor for liquid powered cylinders. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986193294U JPH0736245Y2 (en) | 1986-12-16 | 1986-12-16 | Stroke sensor for hydraulic / pneumatic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6397804U JPS6397804U (en) | 1988-06-24 |
| JPH0736245Y2 true JPH0736245Y2 (en) | 1995-08-16 |
Family
ID=31149187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986193294U Expired - Lifetime JPH0736245Y2 (en) | 1986-12-16 | 1986-12-16 | Stroke sensor for hydraulic / pneumatic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0736245Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5148340B2 (en) * | 2008-03-31 | 2013-02-20 | 本田技研工業株式会社 | Sensor structure |
| KR20200105144A (en) * | 2019-02-28 | 2020-09-07 | 한온시스템 주식회사 | Compressor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5359844U (en) * | 1976-10-25 | 1978-05-22 | ||
| DE2933557C2 (en) * | 1979-08-18 | 1982-11-04 | Robert Bosch Gmbh, 7000 Stuttgart | Transmitter for non-contact distance or speed measurement |
-
1986
- 1986-12-16 JP JP1986193294U patent/JPH0736245Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6397804U (en) | 1988-06-24 |
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