JPH0742082Y2 - Hydro-pneumatic cylinder with stroke sensor - Google Patents

Hydro-pneumatic cylinder with stroke sensor

Info

Publication number
JPH0742082Y2
JPH0742082Y2 JP1986193296U JP19329686U JPH0742082Y2 JP H0742082 Y2 JPH0742082 Y2 JP H0742082Y2 JP 1986193296 U JP1986193296 U JP 1986193296U JP 19329686 U JP19329686 U JP 19329686U JP H0742082 Y2 JPH0742082 Y2 JP H0742082Y2
Authority
JP
Japan
Prior art keywords
holder
sensor
magnetic sensor
piston rod
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.)
Expired - Lifetime
Application number
JP1986193296U
Other languages
Japanese (ja)
Other versions
JPS6397806U (en
Inventor
敏郎 豊田
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.)
KYB Corp
Original Assignee
KYB 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 KYB Corp filed Critical KYB Corp
Priority to JP1986193296U priority Critical patent/JPH0742082Y2/en
Priority to US07/130,821 priority patent/US4839591A/en
Priority to EP87118581A priority patent/EP0271878B1/en
Priority to DE3789366T priority patent/DE3789366T2/en
Publication of JPS6397806U publication Critical patent/JPS6397806U/ja
Application granted granted Critical
Publication of JPH0742082Y2 publication Critical patent/JPH0742082Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (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、油圧及び空圧シリンダのストロークを検出
するセンサの取付構造に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a mounting structure for a sensor that detects 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 publication).

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課題) ところが、このような磁気センサ3は組付け時に所定の
向きにセットする必要があり、かつシリンダ1のヘッド
部の肉厚が大きくなると磁気センサ3を挿入する穴2が
小径で深さの大きいものになってしまう。
(Problems to be solved by the invention) However, such a magnetic sensor 3 needs to be set in a predetermined direction at the time of assembly, and a hole for inserting the magnetic sensor 3 when the head portion of the cylinder 1 becomes thicker 2 has a small diameter and a large depth.

このため磁気センサ3の組付け分解作業が極めて面倒で
作業効率を低下させるものであった。
For this reason, the work of assembling and disassembling the magnetic sensor 3 is extremely troublesome and reduces the work efficiency.

(問題点を解決するための手段) この考案は、このような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
ールに対向してシリンダ側に形成したセンサ穴に磁気セ
ンサを設置した油空圧シリンダにおいて、磁気センサを
先端部に回転不能に固定する筒状のホルダを設けると共
に、前記センサ穴をこのホルダを挿通可能な寸法に形成
して該センサ穴に磁気センサを保持したホルダを挿入し
て、ホルダの磁気センサ側端部をピストンロッド外周側
に対向させ、このホルダと背後のシリンダ側との間に当
該ホルダをピストンロッド側に押圧するスプリングを介
装し、ホルダとシリンダ側との間にホルダの回転を規制
する位置決め手段を設ける。
(Means for Solving Problems) In order to solve such problems, the present invention forms a magnetic scale on the outer circumference of a piston rod, and a sensor hole formed on the cylinder side facing the magnetic scale. In a hydraulic / pneumatic cylinder equipped with a magnetic sensor, a cylindrical holder for non-rotatably fixing the magnetic sensor to the tip is provided, and the sensor hole is formed to have a size that allows the holder to be inserted, and Insert the holder holding the sensor, make the end of the magnetic sensor side of the holder face the outer circumference of the piston rod, and insert a spring that presses the holder toward the piston rod between the holder and the rear cylinder side. Then, a positioning means for restricting the rotation of the holder is provided between the holder and the cylinder side.

(実施例) 第1図、第2図は本考案の実施例を示すもので、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) FIGS. 1 and 2 show an embodiment of the present invention, in which 10 is a cylinder (representing a head portion), 11 is a piston rod in which a magnetic scale (not shown) is formed on a side surface portion, 12 Is a magnetic sensor.

磁気センサ12の先端部13には所定の高さのカラー14が装
着されると共に、その先端部13の外径よりも大きい磁気
センサ12の基部15を挟んで筒状のホルダ16がカラー14に
圧入により嵌合され固定される。
A collar 14 having a predetermined height is attached to the tip portion 13 of the magnetic sensor 12, and a cylindrical holder 16 is attached to the collar 14 with a base portion 15 of the magnetic sensor 12 larger than the outer diameter of the tip portion 13 interposed therebetween. It is fitted and fixed by press fitting.

カラー14は、これらをシリンダ10に形成したセンサ穴17
に嵌装した図示状態にて、磁気センサ12とピストンロッ
ド11との所定の間隙が得られるように高さが定められ、
またホルダ16の上部にはセンサ穴17の穴径よりも大きい
抜け落ち防止用の段付部18が設けられる。
The collar 14 has a sensor hole 17 formed on the cylinder 10.
In the illustrated state of being fitted in, the height is determined so that a predetermined gap between the magnetic sensor 12 and the piston rod 11 is obtained,
In addition, a stepped portion 18 for preventing falling out, which is larger than the hole diameter of the sensor hole 17, is provided above the holder 16.

そして、ホルダ16を囲いシリンダ10に固定されるカバー
19との間に、ホルダ16、磁気センサ12を介してカラー14
をピストンロッド11に押接するスプリング20が介装され
る一方、カバー19とホルダ16及びホルダ16と磁気センサ
12との間に位置決めピン21,22が設置される。
And a cover that surrounds the holder 16 and is fixed to the cylinder 10.
19 and collar 14 via holder 16 and magnetic sensor 12.
The spring 20 for pressing the piston against the piston rod 11 is interposed, while the cover 19 and the holder 16 and the holder 16 and the magnetic sensor
Positioning pins 21 and 22 are installed between the positioning pins 21 and 22.

位置決めピン21はホルダ16の上面に突設され、カバー19
に設けた穴23に係合する。位置決めピン22はホルダ16の
側面に挿通され、磁気センサ12の基部15に設けた溝24に
係合される。
The positioning pin 21 is provided on the upper surface of the holder 16 so that the cover 19
Engages with a hole 23 provided in the. The positioning pin 22 is inserted through the side surface of the holder 16 and is engaged with the groove 24 provided in the base portion 15 of the magnetic sensor 12.

したがって、組付時には磁気センサ12を所定の向きにセ
ットする必要があるが、磁気センサ12とホルダ16及びホ
ルダ16とカバー19との間に設けた位置決めピン21,22に
より、磁気センサ12を所定の向きに的確にセットするこ
とができる。
Therefore, it is necessary to set the magnetic sensor 12 in a predetermined direction at the time of assembly, but the magnetic sensor 12 is set in a predetermined direction by the positioning pins 21 and 22 provided between the magnetic sensor 12 and the holder 16 and between the holder 16 and the cover 19. Can be set accurately in the direction of.

また、カラー14はピストンロッド11と摺接するため、ピ
ストンロッド11の伸縮にしたがって回動しかねないが、
位置決めピン21,22によりカラー14、磁気センサ12、ホ
ルダ16が回動することは防止され、磁気センサ12の向き
が変わることはない。このため、センサの良好な性能が
維持される。
Further, since the collar 14 is in sliding contact with the piston rod 11, it may rotate as the piston rod 11 expands and contracts.
The positioning pins 21 and 22 prevent the collar 14, the magnetic sensor 12, and the holder 16 from rotating, and the orientation of the magnetic sensor 12 does not change. Therefore, the good performance of the sensor is maintained.

そして、磁気センサ12はホルダ16に嵌合された小組み状
態でセンサ穴17に挿入されるので、センサ穴17が小径で
深い場合でも磁気センサ12の組付けや取り出しが容易
で、しかもホルダ16に段付部18を設けたため、シリンダ
10の分解時にホルダ16、磁気センサ12、カラー14が内側
に落ちることがなく、したがって組付け時の作業性が良
好となる。
Since the magnetic sensor 12 is inserted into the sensor hole 17 in a small assembled state fitted to the holder 16, the magnetic sensor 12 can be easily assembled and taken out even when the sensor hole 17 has a small diameter and is deep, and the holder 16 Since the stepped portion 18 is provided on the
The holder 16, the magnetic sensor 12, and the collar 14 do not fall inside when the 10 is disassembled, and therefore workability at the time of assembly is improved.

また、ホルダ16はセンサ穴17の軸方向への移動を許容す
るよう組付けるため、ピストンロッド11の撓みや振動等
にも追従し、磁気センサ12とピストンロッド11との所定
の間隙を保つことができ、安定した検出精度が得られ
る。
Further, since the holder 16 is assembled so as to allow the sensor hole 17 to move in the axial direction, the holder 16 follows the bending and vibration of the piston rod 11 and maintains a predetermined gap between the magnetic sensor 12 and the piston rod 11. And stable detection accuracy can be obtained.

なお、シリンダ10に形成するセンサ穴17は直円筒状で良
いため加工が容易である。
Since the sensor hole 17 formed in the cylinder 10 may be in the shape of a right cylinder, it is easy to process.

(考案の効果) 以上のように本考案によれば、センサの組付けにあたっ
ては予め磁気センサを回転不能に組み付けたホルダをセ
ンサ穴に落とし込むように挿入し、このホルダをシリン
ダ側との間で回転方向に位置決めするだけであり、また
分解作業においてもホルダをセンサ穴から抜き出すだけ
であるので、センサの組付け及び分解作業性が大幅に向
上する。
(Effects of the Invention) According to the present invention as described above, when assembling the sensor, the holder in which the magnetic sensor is fixed in a non-rotatable manner is inserted into the sensor hole so that the holder is inserted into the cylinder side. Since the holder is simply positioned in the rotational direction and the holder is simply pulled out from the sensor hole even during disassembly, the workability of assembling and disassembling the sensor is greatly improved.

また、磁気センサ側端部をピストンロッド外周側に対向
させたホルダをスプリングを介してピストンロッド側に
押圧するようにしたので、磁気センサをピストンロッド
の撓みや振動に追従させることができ、これにより磁気
センサとピストンロッドとの間に所定の間隙を保つこと
ができるので安定した検出精度を発揮させられるという
効果も得られる。
Further, since the holder whose magnetic sensor side end portion is opposed to the piston rod outer peripheral side is pressed against the piston rod side via the spring, the magnetic sensor can follow the bending and vibration of the piston rod. As a result, a predetermined gap can be maintained between the magnetic sensor and the piston rod, so that it is possible to obtain a stable detection accuracy.

【図面の簡単な説明】[Brief description of drawings]

第1図は本考案の実施例を示す要部断面図、第2図はそ
んおA−A線断面図、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……カラー、15……基部、16…
…ホルダ、17……センサ穴、18……段付部、19……カバ
ー、20……スプリング、21,22……位置決めピン。
FIG. 1 is a sectional view of an essential portion showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 3, and FIG. 3 is a sectional view of an essential portion of a conventional example. 10 ... Cylinder, 11 ... Piston rod, 12 ... Magnetic sensor, 13 ... Tip, 14 ... Color, 15 ... Base, 16 ...
… Holder, 17 …… Sensor hole, 18 …… Stepped part, 19 …… Cover, 20 …… Spring, 21,22 …… Positioning pin.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】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対向してシリンダ側に形成し
たセンサ穴に磁気センサを設置した油空圧シリンダにお
いて、磁気センサを先端部に回転不能に固定する筒状の
ホルダを設けると共に、前記センサ穴をこのホルダを挿
通可能な寸法に形成して該センサ穴に磁気センサを保持
したホルダを挿入して、ホルダの磁気センサ側端部をピ
ストンロッド外周側に対向させ、このホルダと背後のシ
リンダ側との間に当該ホルダをピストンロッド側に押圧
するスプリングを介装し、ホルダとシリンダ側との間に
ホルダの回転を規制する位置決め手段を設けたことを特
徴とするストロークセンサを備えた油空圧シリンダ。
1. 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 in a sensor hole formed on the cylinder side facing the magnetic scale. A cylindrical holder to be fixed to the sensor is provided, and the sensor hole is formed into a size that allows the holder to pass through, and the holder holding the magnetic sensor is inserted into the sensor hole. Positioning means for facing the outer circumference of the rod, interposing a spring for pressing the holder to the piston rod side between the holder and the cylinder side behind the holder, and regulating the rotation of the holder between the holder and the cylinder side. A hydraulic / pneumatic cylinder equipped with a stroke sensor.
JP1986193296U 1986-12-16 1986-12-16 Hydro-pneumatic cylinder with stroke sensor Expired - Lifetime JPH0742082Y2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1986193296U JPH0742082Y2 (en) 1986-12-16 1986-12-16 Hydro-pneumatic cylinder with stroke sensor
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
JP1986193296U JPH0742082Y2 (en) 1986-12-16 1986-12-16 Hydro-pneumatic cylinder with stroke sensor

Publications (2)

Publication Number Publication Date
JPS6397806U JPS6397806U (en) 1988-06-24
JPH0742082Y2 true JPH0742082Y2 (en) 1995-09-27

Family

ID=31149190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986193296U Expired - Lifetime JPH0742082Y2 (en) 1986-12-16 1986-12-16 Hydro-pneumatic cylinder with stroke sensor

Country Status (1)

Country Link
JP (1) JPH0742082Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992008058A1 (en) * 1990-10-26 1992-05-14 Kabushiki Kaisha Komatsu Seisakusho Device for mounting position detecting sensor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2933557C2 (en) * 1979-08-18 1982-11-04 Robert Bosch Gmbh, 7000 Stuttgart Transmitter for non-contact distance or speed measurement
JPS5960577U (en) * 1982-10-15 1984-04-20 三洋電機株式会社 magnetic detector
JPS59202018A (en) * 1983-05-02 1984-11-15 Matsushita Electric Ind Co Ltd Magnetic encoder

Also Published As

Publication number Publication date
JPS6397806U (en) 1988-06-24

Similar Documents

Publication Publication Date Title
JPH0742082Y2 (en) Hydro-pneumatic cylinder with stroke sensor
JPH0736245Y2 (en) Stroke sensor for hydraulic / pneumatic cylinder
CN221087284U (en) Main shaft loose broach structure and lathe
JPH034725Y2 (en)
JP2000179508A (en) Mounting structure of stroke sensor for hydro-pneumatic cylinder
RU1794578C (en) Tool unit for dies in working metals preferably by extrusion
CN210499498U (en) Vibration detection system of machine tool
JPH0631396Y2 (en) Cylinder pressure sensor
JPH0413267U (en)
JPS6374227U (en)
JPS609384Y2 (en) Piston top position indicator plate mounting device
JP2544377Y2 (en) Pulley with sensor detection protrusion
JPS6225288Y2 (en)
JPS593813Y2 (en) Protective equipment for installing internal combustion engine pistons
JPH0315863Y2 (en)
JPS6327226U (en)
JP2000234603A (en) Stroke sensor mounting structure
JPS6358707U (en)
JPS61164802U (en)
JPS60129550U (en) Pistons in horizontal reciprocating engines
JPS60167265U (en) mechanical seal
JPH0375988U (en)
JPS6390543U (en)
JPS6253971U (en)
JPH0370836U (en)