JPH02268209A - Waterproof type position detecting apparatus - Google Patents
Waterproof type position detecting apparatusInfo
- Publication number
- JPH02268209A JPH02268209A JP9036089A JP9036089A JPH02268209A JP H02268209 A JPH02268209 A JP H02268209A JP 9036089 A JP9036089 A JP 9036089A JP 9036089 A JP9036089 A JP 9036089A JP H02268209 A JPH02268209 A JP H02268209A
- Authority
- JP
- Japan
- Prior art keywords
- detector
- scale
- measured
- magnet
- container
- 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
- 238000001514 detection method Methods 0.000 claims description 32
- 239000000696 magnetic material Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【発明の詳細な説明】 〈産業上の利用分野〉 この発明は、防水性を備えた位置検出装置に関する。[Detailed description of the invention] <Industrial application field> The present invention relates to a waterproof position detection device.
〈従来の技術〉
従来、この種の位置検出装置としては、第５図に示すよ
うなものがある。この位置検出装置は、密閉容器４に内
に細長いスケール４４と、これに摺動可能に取り付けら
れた光学式（例えばモアレ縞式）の検出器４５を備える
と共に、上記密閉容器４１を貫通して、上記スケール４
４の方向に略同じ長さを有するロッド４２を嵌挿し、こ
のロッド４２の一方の端部４２ａを上記検出器４５に取
り付けたものである。そして、このロッド４２の他方の
端部４２ｂに被測定物５０が取り付けられて、上記スケ
ール４４の方向に移動した場合、上記検出器４５は、ロ
ッド４２および被測定物５０と一体に移動して、上記ス
ケール４４との相対変位を検出し、被測定物５０の位置
を検出するようになっている。なお、密閉容器４１とロ
ッド４２との隙間に、防水性を保つように摺動シール４
６が設けられている。<Prior Art> Conventionally, there is a position detection device of this type as shown in FIG. This position detection device includes an elongated scale 44 in a closed container 4 and an optical (for example, Moiré stripe type) detector 45 slidably attached to the scale 44. , above scale 4
A rod 42 having substantially the same length in the direction of 4 is inserted, and one end 42a of this rod 42 is attached to the detector 45. When the object to be measured 50 is attached to the other end 42b of the rod 42 and moves in the direction of the scale 44, the detector 45 moves together with the rod 42 and the object to be measured 50. , the relative displacement with respect to the scale 44 is detected, and the position of the object to be measured 50 is detected. In addition, a sliding seal 4 is provided in the gap between the airtight container 41 and the rod 42 to maintain waterproofness.
6 is provided.
〈発明が解決しようとする課題〉
ところで、上記従来の位置検出装置は、ロツド４２の長
さが被測定物の位置を検出することができる範囲（以下
、「検出範囲」と略す）に相当している。そして、ロッ
ド４２が密封容器４１から最も突出した場合、上記位置
検出装置の全長は上記ロッド４２の２倍の長さとなる。<Problems to be Solved by the Invention> By the way, in the conventional position detection device described above, the length of the rod 42 corresponds to the range in which the position of the object to be measured can be detected (hereinafter abbreviated as "detection range"). ing. When the rod 42 protrudes the most from the sealed container 41, the total length of the position detection device is twice the length of the rod 42.
このため、」二足従来の位置検出装置は、検出範囲の略
２倍の取付スペースを要するという問題がある。For this reason, the conventional bipedal position detection device has a problem in that it requires an installation space approximately twice as large as the detection range.
そこで、この発明の目的は、被測定物の検出範囲と略等
しい取付スペースで取り付けることかできる防水型位置
検出装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a waterproof position detection device that can be installed in an installation space that is approximately equal to the detection range of an object to be measured.
〈課題を解決するための手段〉
上記目的を達成するために、この発明の防水型位置検出
装置は、非磁性材料からなり、一方向に細長く、かつ一
定断面を有する密閉容器と、上記密閉容器内部に、上記
方向に設けた非磁性材料からなるスケールと、磁石が固
定され、上記スケールに摺動自在に嵌合し、上記スケー
ル上の位置を検出する検知器と、上記検知器の磁石と互
いに吸引しあう磁石が固定されると共に上記密閉容器の
外周に摺動自在に嵌合され、上記検知器を連動さ仕る移
動台とを備えたことを特徴としている。<Means for Solving the Problems> In order to achieve the above object, a waterproof position detection device of the present invention includes: a closed container made of a non-magnetic material, elongated in one direction and having a constant cross section; and the closed container. A scale made of a non-magnetic material provided in the above-mentioned direction and a magnet are fixed inside, and a detector that is slidably fitted to the scale and detects the position on the scale; The present invention is characterized in that it includes a movable table on which magnets that attract each other are fixed, and which is slidably fitted around the outer periphery of the sealed container, and which operates the detector in conjunction with each other.
〈作用〉
被測定物が移動台に取り付けられて密閉容器の長手方向
すなわちスケールの方向に移動した場合、この移動台の
磁石と検出器の磁石とが非磁性材料からなる上記密閉容
器を通して互いに吸引し合うため、上記検知器は被測定
物と連動して上記スケールに沿って摺動してスケール上
の位置を検出する。検出したスケール上の位置は、被測
定物の位置として出力される。<Operation> When the object to be measured is attached to the moving stage and moved in the longitudinal direction of the sealed container, that is, in the direction of the scale, the magnet of the moving stage and the magnet of the detector are attracted to each other through the sealed container made of non-magnetic material. Therefore, the detector slides along the scale in conjunction with the object to be measured to detect the position on the scale. The detected position on the scale is output as the position of the object to be measured.
このように動作する場合、上記移動台が移動する範囲す
なわち検出範囲は、密閉容器の長手方向の長さと略等し
い範囲となる。したがって、この位置検出装置は、検出
範囲と略等しい取付スペースで取り付けられる。When operating in this manner, the range in which the moving table moves, that is, the detection range is approximately equal to the length of the closed container in the longitudinal direction. Therefore, this position detection device is installed in an installation space that is approximately equal to the detection range.
また、従来の防水型位置検出装置と異なり、容器を貫通
するロッドを使用せず磁力によって検出器を移動させる
ようにしているため、容器は完全に密閉されて防水性が
高まる。Also, unlike conventional waterproof position detection devices, the detector is moved by magnetic force without using a rod that penetrates the container, so the container is completely sealed and waterproof.
〈実施例〉
以下、この発明の防水性位置検出装置を図示の実施例に
より詳細に説明する。<Embodiments> Hereinafter, the waterproof position detection device of the present invention will be explained in detail with reference to illustrated embodiments.
第１図および第２図に示すように、この発明の防水型位
置検出装置は、Ａｆ２製の細長いシリンダ２およびこの
両端を塞ぐ一対の密閉キャップ３゜３からなる密閉容器
１と、非磁性ガラス製の角柱の側面４ａに目盛を設けて
なるメインスケール４を備えている。このメインスケー
ルは、上記各密閉キャップ３．３の内側中央部に設けた
枠状の突起部３ ａ、 ３ ａに端部をそれぞれ密嵌し
て取り゛付けられている。また、この防水型位置検出装
置は、上記シリンダ２の内部に、上記メインスケール４
の側面４ａに摺接するインデックススケールと受光素子
を内蔵した光学式検知器５と、この検知器５に固定され
ると共に上記メインスケール４に摺動自在に嵌合した枠
状の磁石６を備える一方、シリンダ２の外部に、このシ
リンダ外周に摺動自在に嵌合して上記磁石６と互いに吸
引し合う円筒状の磁石８と、この磁石８に取付られた移
動台７とを備えている。この移動台７は、磁石８の外周
および両端面を覆う環状部７ａと、被測定物ＩＯを取り
付けるべき台座部７ｂとからなっている。なお、上記検
知器５の出力線１２は、シリンダ２の端部から外部へ取
り出し、密封性を保つようにその隙間にシール材１３を
施している。また、磁石６がメインスケールに沿って摺
動して密閉キャップ３の突起部３ａに衝突して破損する
ことのないように、その両端に一対の保護パッド１４．
１４を設けている。また、移動台７がシリンダ２に対し
てぐらつかないように０リングからなるパツキン１１．
１１を設けている。As shown in FIGS. 1 and 2, the waterproof position detection device of the present invention includes a sealed container 1 consisting of an elongated Af2 cylinder 2 and a pair of sealing caps 3°3 that close both ends of the cylinder 2, and a non-magnetic glass The main scale 4 is provided with graduations on the side surface 4a of a square column made of aluminum. This main scale is attached with its end portions tightly fitted into frame-shaped protrusions 3a, 3a provided at the center inside of each of the sealing caps 3.3. Further, this waterproof position detection device has the main scale 4 inside the cylinder 2.
an optical detector 5 having a built-in index scale and a light-receiving element that slides on the side surface 4a of the scale; and a frame-shaped magnet 6 that is fixed to the detector 5 and slidably fitted to the main scale 4. A cylindrical magnet 8 is provided outside the cylinder 2 and is slidably fitted onto the outer periphery of the cylinder to attract the magnet 6 and the movable base 7 attached to the magnet 8. The moving table 7 includes an annular portion 7a that covers the outer periphery and both end faces of the magnet 8, and a pedestal portion 7b to which the object to be measured IO is attached. The output line 12 of the detector 5 is taken out from the end of the cylinder 2, and a sealing material 13 is applied to the gap to maintain sealing. Also, to prevent the magnet 6 from sliding along the main scale and colliding with the protrusion 3a of the sealing cap 3 and being damaged, a pair of protective pads 14.
There are 14. Also, in order to prevent the movable table 7 from wobbling relative to the cylinder 2, a gasket 11 consisting of an O-ring is provided.
There are 11.
被測定物ｌＯが上記移動台７の台座部７ｂに取り付けら
れてシリンダ２に沿って移動した場合、この移動台７側
の磁石８と検知器５側の磁石６とが非磁性材料であるＡ
ｇ製のシリンダ２の壁面を通して互いに吸引し合ってい
るため、上記検知器５は被測定物１０と連動して上記メ
インスケール４の側面４ａ上を摺動する。そして、上記
検知器５は、メインスケール４の目盛と検知器５のイン
デックススケールとを組み合わせて発生させたモアレ縞
の明暗を受光素子で観測して、この明暗に対応した周期
数の電気信号が外部の図示しない信号処理手段で処理さ
れて、被測定物ＩＯの位置が検知される。When the object to be measured 10 is attached to the pedestal part 7b of the moving table 7 and moves along the cylinder 2, the magnet 8 on the moving table 7 side and the magnet 6 on the detector 5 side are made of non-magnetic material A.
Since they are attracted to each other through the wall surface of the cylinder 2 made of G.G., the detector 5 slides on the side surface 4a of the main scale 4 in conjunction with the object to be measured 10. The detector 5 uses a light receiving element to observe the brightness of the moiré fringes generated by combining the graduations of the main scale 4 and the index scale of the detector 5, and generates an electrical signal with a periodicity corresponding to the brightness. The position of the object to be measured IO is detected by processing by an external signal processing means (not shown).
このように動作する場合、上記移動台７が移動する範囲
すなわち検出範囲は、シリンダ２の長さと略等しい範囲
となる。したがって、この位置検出装置は、検出範囲と
略等しい取付スペースで取り付けることができる。When operating in this manner, the range in which the movable table 7 moves, that is, the detection range is approximately equal to the length of the cylinder 2. Therefore, this position detection device can be installed in an installation space that is approximately equal to the detection range.
また、従来の防水型位置検出装置と異なり、容器を貫通
するロッドを使用せず、磁力によって検出器５を移動さ
せるようにしているので、容器１を完全に密封すること
ができ、防水性を高めることができる。In addition, unlike conventional waterproof position detection devices, the detector 5 is moved by magnetic force without using a rod that penetrates the container, so the container 1 can be completely sealed and waterproof. can be increased.
上記実施例は、円筒状の密閉容器１を備えたが、これに
限られるものではなく、第３図および第４図に示す別の
実施例のように、矩形断面を有する密閉容器を備えても
良い。この防水型位置検出装置は、Ａ１２製の中空角柱
２２およびこの両端のキャップ２３２３からなる密閉容
器２１と、この密閉容器２１の内面に設けた角柱３５に
目盛の面２４ａを表側にして埋め込まれたメインスケー
ル２４と、上記目盛の而２４ａに検知面を摺接する検知
器２５と、この検知器５の背面および側面を一体に覆う
と共に上記角柱３５に沿って摺動し得る磁石２６とを備
えている。この磁石２６は一対のアーム部２６ａ、２６
ａを有しており、このアーム部２６ａ、２６ａが上記角
柱３５の側面に設けた一対の案内１３５ａ、３５ａに係
合して、上記メインスケール２４と検知器２５とを離間
させないようにしている。一方、上記中空４角柱２２の
外部に、検知器２５の背面側の側面２２ａに、上記磁石
２６と互いに吸引し合う磁石２８を摺接し、この磁石２
８の外周を一体に覆うと共に上記中空角柱２２に沿って
摺動し得る移動台２７を備えている。Although the above embodiment includes a cylindrical closed container 1, the present invention is not limited to this, and as in another embodiment shown in FIGS. 3 and 4, a closed container with a rectangular cross section may be provided. Also good. This waterproof position detection device includes an airtight container 21 consisting of a hollow prismatic pillar 22 made of A12 and caps 2323 at both ends thereof, and a prismatic pillar 35 provided on the inner surface of this airtight container 21, which is embedded with the scale surface 24a facing up. It comprises a main scale 24, a detector 25 whose detection surface is in sliding contact with the scale 24a, and a magnet 26 that integrally covers the back and side surfaces of the detector 5 and can slide along the prism 35. There is. This magnet 26 has a pair of arm portions 26a, 26
a, and the arm portions 26a, 26a engage with a pair of guides 135a, 35a provided on the side surfaces of the square column 35 to prevent the main scale 24 and the detector 25 from being separated. . On the other hand, on the outside of the hollow rectangular column 22, a magnet 28 that attracts the magnet 26 and the magnet 28 is in sliding contact with the side surface 22a on the back side of the detector 25.
A movable table 27 is provided which integrally covers the outer periphery of the hollow prism 22 and can slide along the hollow prism 22.
この移動台２７は一対のアーム部２７ａ、２７ａを有し
、このアーム部２７ａ、２７ａが上記中空角柱２２の側
面に設けた一対の案内１２２ｂ、２２ｂに係合して、上
記側面２２ａと磁石２８とを離間させないようにしてい
る。This moving table 27 has a pair of arm parts 27a, 27a, and these arm parts 27a, 27a engage with a pair of guides 122b, 22b provided on the side surfaces of the hollow prism 22, so that the side surfaces 22a and the magnet 28 I try not to separate them.
なお、この位置検出装置は、被測定物３０が上記移動台
２７に取り付けられて中空角柱２２に沿って移動する場
合、第１図および第２図に示した円筒状の位置検出装置
と全く同様に動作する。Note that this position detection device is completely similar to the cylindrical position detection device shown in FIG. 1 and FIG. works.
また、当然ながら、上記密閉容器！、２１はＡＱ製に限
られるものではなく、他の非磁性材料、例えばステンレ
ス製などでも良い。Also, of course, the airtight container mentioned above! , 21 are not limited to those made of AQ, but may be made of other non-magnetic materials, such as stainless steel.
〈発明の効果〉
以上より明らかなように、この発明の防水型位置検出装
置は、非磁性材料からなり、一方向に細長く、かつ一定
断面を有する密閉容器と、上記密閉容器内部に、上記方
向に設けた非磁性材料からなるスケールと、磁石が固定
され、上記スケールに摺動自在に嵌合し、上記スケール
上の位置を検出する検知器と、上記検知器の磁石と互い
に吸引しあう磁石が固定されると共に上記密閉容器の外
周に摺動自在に嵌合され、上記検知器を連動させる移動
台とを備えているので、被測定物の検出範囲と略等しい
取付スペースで取り付けることができる。<Effects of the Invention> As is clear from the above, the waterproof position detection device of the present invention includes a sealed container made of a non-magnetic material, elongated in one direction and having a constant cross section, and a sealed container in the above-mentioned direction. a scale made of a non-magnetic material provided on the scale; a detector to which a magnet is fixed; a detector that slidably fits onto the scale and detects a position on the scale; and a magnet that attracts the magnet of the detector to each other; is fixed and is slidably fitted to the outer periphery of the sealed container, and is provided with a movable table that interlocks the detector, so it can be installed in an installation space that is approximately equal to the detection range of the object to be measured. .
また、従来の防水型位置検出装置と異なり、容器を貫通
ずるロッドを使用せず、磁力によって検出器を移動させ
るようにしているので、容器の防水性を高めることがで
きる。Furthermore, unlike conventional waterproof position detection devices, the detector is moved by magnetic force without using a rod that passes through the container, so the waterproofness of the container can be improved.
第１図および第２図はこの発明の防水型位置検出装置の
一実施例を示す断面図、第３図および第４図はこの発明
の別の実施例を示す断面図、第５図は従来の防水型位置
検出装置を示す図である。
１．２！・・・密閉容器、２・・・シリンダ、３．２３
・・・ 密閉キャップ、
４．２４・・・メインスケール、
４ａ、２４ａ・・・目盛の面、５，２５・・・検知器、
６．８，２６．２８・・・磁石、７．２７・・・移動台
、１０．３０・・・被測定物、１１．３１・・・パツキ
ン、１２．３２・・・出力線、１３．３３・・・シール
材、１４．３４・・・保護パッド、２２・・・中空角柱
。
特 許 出 願 人 ダイキン工業株式会社代 理
人 弁理士 青白 葆 ほか１名１３図
第４図
第５図1 and 2 are cross-sectional views showing one embodiment of the waterproof position detection device of the present invention, FIGS. 3 and 4 are cross-sectional views showing another embodiment of the present invention, and FIG. 5 is a conventional FIG. 2 is a diagram showing a waterproof position detection device. 1.2! ...Airtight container, 2...Cylinder, 3.23
... Sealing cap, 4.24... Main scale, 4a, 24a... Scale surface, 5, 25... Detector,
6.8, 26.28... Magnet, 7.27... Moving table, 10.30... Measured object, 11.31... Packing, 12.32... Output line, 13. 33...Sealing material, 14.34...Protection pad, 22...Hollow prism. Patent applicant Agent: Daikin Industries, Ltd.
People Patent attorney Aobai Ao and 1 other person 13 Figure 4 Figure 5
Claims (1)
断面を有する密閉容器（１）と、 上記密閉容器（１）内部に、上記方向に設けた非磁性材
料からなるスケール（４）と、 磁石（６）が固定され、上記スケール（４）に摺動自在
に嵌合し、上記スケール（４）上の位置を検出する検知
器（５）と、 上記検知器（５）の磁石（６）と互いに吸引しあう磁石
（８）が固定されると共に上記密閉容器（１）の外周に
摺動自在に嵌合され、上記検知器（５）を連動させる移
動台（７）とを備えたことを特徴とする防水型位置検出
装置。(1) A closed container (1) made of a non-magnetic material, elongated in one direction and having a constant cross section, and a scale (4) made of a non-magnetic material provided in the above-mentioned direction inside the sealed container (1). , a detector (5) to which a magnet (6) is fixed, which is slidably fitted into the scale (4) and detects a position on the scale (4); and a magnet (5) of the detector (5). 6) and a movable stage (7) on which a magnet (8) that attracts each other is fixed and slidably fitted on the outer periphery of the sealed container (1) and interlocks the detector (5). A waterproof position detection device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9036089A JPH02268209A (en) | 1989-04-10 | 1989-04-10 | Waterproof type position detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9036089A JPH02268209A (en) | 1989-04-10 | 1989-04-10 | Waterproof type position detecting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02268209A true JPH02268209A (en) | 1990-11-01 |
Family
ID=13996371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9036089A Pending JPH02268209A (en) | 1989-04-10 | 1989-04-10 | Waterproof type position detecting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02268209A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009025300A (en) * | 2007-07-19 | 2009-02-05 | Dr Johannes Heidenhain Gmbh | Instrument for measuring length |
-
1989
- 1989-04-10 JP JP9036089A patent/JPH02268209A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009025300A (en) * | 2007-07-19 | 2009-02-05 | Dr Johannes Heidenhain Gmbh | Instrument for measuring length |
| KR101415637B1 (en) * | 2007-07-19 | 2014-08-06 | 덕터 요한네스 하이덴하인 게엠베하 | Linear encoder |
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