JPS6310485Y2 - - Google Patents
Info
- Publication number
- JPS6310485Y2 JPS6310485Y2 JP1982111373U JP11137382U JPS6310485Y2 JP S6310485 Y2 JPS6310485 Y2 JP S6310485Y2 JP 1982111373 U JP1982111373 U JP 1982111373U JP 11137382 U JP11137382 U JP 11137382U JP S6310485 Y2 JPS6310485 Y2 JP S6310485Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- scale
- fixed
- receiving element
- elastic member
- 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
Links
- 125000006850 spacer group Chemical group 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Description
【考案の詳細な説明】
本考案は枠体に設けた固定スケールと、移動体
に設けた移動スケールと、この一対のスケールを
挟んで対向配置の受光素子と発光素子とを有し、
前記移動体の移動量を電気的に検出するようにし
たデジタル測長器の改良に関し、とくに移動スケ
ールの移動行程における機械的な変動に対して、
固定スケール及び受光素子の両方が同時に、而も
常に一定の間隔を有して、その変動に追従可能な
構造とし、精度の安定性及び向上を計つたデジタ
ル測長器の提供を目的としたものである。[Detailed description of the invention] The present invention has a fixed scale provided on a frame body, a movable scale provided on a moving body, and a light receiving element and a light emitting element arranged opposite to each other with the pair of scales in between.
Regarding the improvement of the digital length measuring device that electrically detects the amount of movement of the moving object, especially against mechanical fluctuations in the movement stroke of the moving scale,
The purpose of the present invention is to provide a digital length measuring instrument in which both a fixed scale and a light receiving element are arranged at the same time and always at a constant interval, and the structure is capable of following the fluctuations thereof, thereby stabilizing and improving accuracy. It is.
デジタル測長器の代表的なものとしては、デジ
タルダイヤルゲージ、デジタルマイクロメータ、
デジタルハイトゲージなどがあるが以下デジタル
ダイヤルゲージを例にとり説明する。 Typical digital length measuring devices include digital dial gauge, digital micrometer,
There are digital height gauges, etc., but a digital dial gauge will be explained below as an example.
第１図は従来のデジタルダイヤルゲージの要部
説明図であり、第２図は第１図に示す説明図のＡ
−Ａ断面拡大図である。 Fig. 1 is an explanatory diagram of the main parts of a conventional digital dial gauge, and Fig. 2 is an explanatory diagram of A of the explanatory diagram shown in Fig. 1.
-A is an enlarged cross-sectional view.
図において１はアルミ、しんちゆう等の金属材
料よりなる枠体、２はアツパーブツシユ３及びス
テム４により上下に摺動自在に支持されるスピン
ドル、５はコイルバネで一端を枠体１に、他端を
スピンドル２に固着されたバネ掛けピン６に取付
けられている。スピンドル２は、このコイルバネ
５により常時下方へ付勢されている。７はガイド
棒であり、その一端はスピンドル２に固着され、
他端は枠体１に設けられたガイド溝１ａ内に挿入
されている。このガイド棒７はスピンドル２の移
動行程における回転を規制するために設けられて
いる。８はスピンドル２の下端に設けられた測定
端子である。９はスピンドル２にネジあるいは接
着等により固定された移動スケール取付板であ
り、１０は移動スケール取付板９に接着固定され
たガラス材よりなる移動スケールである。 In the figure, 1 is a frame made of a metal material such as aluminum or steel, 2 is a spindle supported by an upper bushing 3 and a stem 4 so as to be slidable up and down, and 5 is a coil spring with one end attached to the frame 1 and the other end. is attached to a spring hook pin 6 fixed to the spindle 2. The spindle 2 is constantly urged downward by this coil spring 5. 7 is a guide rod, one end of which is fixed to the spindle 2;
The other end is inserted into a guide groove 1a provided in the frame 1. This guide rod 7 is provided to restrict rotation of the spindle 2 during its travel stroke. 8 is a measurement terminal provided at the lower end of the spindle 2. 9 is a moving scale mounting plate fixed to the spindle 2 with screws or adhesive, and 10 is a moving scale made of glass material and fixed to the moving scale mounting plate 9 with adhesive.
この移動スケール１０はその表面に公知の格子
状パターンを有しており、また、スピンドル２の
移動に伴なつて上下に移動する。 The moving scale 10 has a known grid pattern on its surface, and moves up and down as the spindle 2 moves.
１１はガラス材よりなる固定スケールであり、
枠体１にネジ止めされた固定スケール取付板１２
に接着固定されている。この固定スケール１１の
表面にも公知の格子状パターンが設けられてい
る。固定スケール１１と移動スケール１０とは一
定のスケールギヤツプＥを隔てて平行配置されて
いる。１３は発光素子１４と発光素子１４からの
光を平行光とするための凸レンズ１５とを支持す
るためのレンズ取付板であり、ネジにより枠体１
に固定されている。１６は受光素子１７を支持す
るための受光素子取付基板であり、ネジにより固
定スケール取付板１２に固定されている。 11 is a fixed scale made of glass material,
Fixed scale mounting plate 12 screwed to frame 1
It is fixed with adhesive. A known grid pattern is also provided on the surface of this fixed scale 11. The fixed scale 11 and the movable scale 10 are arranged parallel to each other with a fixed scale gap E between them. Reference numeral 13 denotes a lens mounting plate for supporting the light emitting element 14 and a convex lens 15 for converting the light from the light emitting element 14 into parallel light.
is fixed. 16 is a light receiving element mounting board for supporting the light receiving element 17, and is fixed to the fixed scale mounting plate 12 with screws.
発光素子１４と受光素子１７は、移動スケール
１０と固定スケール１１とを挟むように配置され
ている。 The light emitting element 14 and the light receiving element 17 are arranged to sandwich the movable scale 10 and the fixed scale 11.
このような構成において、スピンドル２を上下
に移動させると、移動スケール１０も同様に移動
するため、発光素子１４からの光量は、移動スケ
ール１０及び固定スケール１１によつて周期的に
変化した状態で対向する受光素子１７に伝達され
る。受光素子１７での光量のアナログ的な周期的
変化は図示はしていないが、公知の増巾器、アナ
ログコンパレータ、加減算方向弁別回路、カウン
タ、演算回路などの電気回路を介してデジタル量
に変換され、表示素子上で最終的にスピンドルの
移動量がデジタル値で表示されることになる。 In such a configuration, when the spindle 2 is moved up and down, the moving scale 10 also moves in the same way, so the amount of light from the light emitting element 14 is changed periodically by the moving scale 10 and the fixed scale 11. The light is transmitted to the opposing light receiving element 17. Although analog periodic changes in the amount of light at the light-receiving element 17 are not shown, they are converted into digital amounts through known electric circuits such as an amplifier, an analog comparator, an addition/subtraction direction discrimination circuit, a counter, and an arithmetic circuit. The amount of movement of the spindle is finally displayed as a digital value on the display element.
このような構造を有する従来のデジタル測長器
において、スケールギヤツプＥは通常10〜50μ程
度に設定されているが、固定スケールと移動スケ
ールのスピンドルに対する平行度を数μ以内に保
つことは一般に困難である。このためスピンドル
の移動に伴つてスケールギヤツプＥが変動し、一
対のスケールを通過する発光素子からの光を受光
する受光素子の受光量が変化してしまい精度誤差
を生じてしまう。 In conventional digital length measuring instruments with such a structure, the scale gap E is usually set to about 10 to 50μ, but it is generally difficult to maintain the parallelism of the fixed scale and the moving scale to the spindle within a few μ. be. Therefore, as the spindle moves, the scale gap E fluctuates, and the amount of light received by the light receiving element that receives light from the light emitting element passing through the pair of scales changes, resulting in accuracy errors.
近年、上記欠点を解消するために一方のスケー
ルを枠体と弾性部材を介して保持し、さらに押圧
用弾性部材により他方スケール側に常時付勢し、
一対のスケールの間に矩型枠、円筒コロ、球、あ
るいはスケールへの印刷等をほどこすことによ
り、一対のスケールの平行度及びスケールギヤツ
プを一定に保つギヤツプ保持装置の提案が数多く
なされている。 In recent years, in order to eliminate the above-mentioned drawbacks, one scale is held through a frame and an elastic member, and the other scale is constantly urged by a pressing elastic member.
Many proposals have been made for gap holding devices that maintain a constant parallelism and scale gap between a pair of scales by applying a rectangular frame, cylindrical roller, sphere, or printing on the scale between the pair of scales.
次に、従来のギヤツプ保持装置の例を示す。 Next, an example of a conventional gap holding device will be shown.
第３図は上記一例の要部断面図である。 FIG. 3 is a sectional view of a main part of the above example.
第３図に示す要部断面図は第２図に示す従来例
のＡ−Ａ断面図と同位置における断面図である。
尚第１図、第２図と同一の部分は同一の符号を付
して説明を省略する。 The main part sectional view shown in FIG. 3 is a sectional view at the same position as the AA sectional view of the conventional example shown in FIG.
Note that the same parts as in FIGS. 1 and 2 are designated by the same reference numerals, and explanations thereof will be omitted.
第３図において、固定スケール１１は公知の格
子状パターン面に印刷により形成されたスペーサ
１８を有し、枠体１に固定された板バネ等の弾性
部材１９に接着固定されており、弾性部材１９を
介して片持ちの状態で支持されている。２０は枠
体１にネジ止めされ、固定スケール１１の下方に
のびてバネ等の押圧用弾性部材２１を保持する受
体である。 In FIG. 3, the fixed scale 11 has a spacer 18 formed by printing on a known grid pattern surface, and is adhesively fixed to an elastic member 19 such as a leaf spring fixed to the frame 1. It is supported in a cantilevered manner via 19. A receiver 20 is screwed to the frame 1, extends below the fixed scale 11, and holds a pressing elastic member 21 such as a spring.
このような構造において、固定スケール１１は
弾性部材１９と押圧用弾性部材２１の働きにより
常時移動スケール１０側に押圧されているので、
移動スケール１０の動きに追従し、さらにスペー
サ１８の働きにより常時平行に保たれている。 In this structure, the fixed scale 11 is constantly pressed toward the movable scale 10 by the elastic member 19 and the pressing elastic member 21.
It follows the movement of the moving scale 10 and is always kept parallel by the action of the spacer 18.
第４図は第３図に示す要部断面図のＢ−Ｂ断面
図である。弾性部材１９はＵ字形をしており、延
出端１９ａで固定スケール１１を保持している。
またスペーサ１８は固定スケール１１の表面上に
４つ設けられている。 FIG. 4 is a sectional view taken along line BB of the main part sectional view shown in FIG. 3. The elastic member 19 is U-shaped and holds the fixed scale 11 at an extending end 19a.
Further, four spacers 18 are provided on the surface of the fixed scale 11.
第５図は第３図に示す要部断面図のＣ−Ｃ断面
図である。固定スケール１１を支持する弾性部材
１９の延出端１９ａの下には、弾性部材１９と固
定スケール１１とを下から上へ押圧するための押
圧用弾性部材２１が受体２０にピン２２で固定さ
れている。 FIG. 5 is a sectional view taken along the line C--C of the main part sectional view shown in FIG. Below the extending end 19a of the elastic member 19 that supports the fixed scale 11, a pressing elastic member 21 for pressing the elastic member 19 and the fixed scale 11 from bottom to top is fixed to the receiver 20 with a pin 22. has been done.
上記構成により、固定スケールは、弾性保持さ
れているので移動スケールのいかなる動きにも追
従し、また、その表面に印刷されたスペーサによ
り移動スケールとのスケールギヤツプを常時正確
に保つことができる。また、スペーサは印刷によ
り形成されているので、スペーサの位置及び厚み
を容易に選択決定することができる。以上より、
一対のスケールを通過する発光素子からの光を受
光する受光素子の受光量を均一にすることがで
き、精度が向上する。 With the above configuration, the fixed scale is elastically held, so it can follow any movement of the moving scale, and the spacer printed on its surface can always maintain an accurate scale gap with the moving scale. Further, since the spacers are formed by printing, the position and thickness of the spacers can be easily selected and determined. From the above,
The amount of light received by the light-receiving element that receives light from the light-emitting element passing through the pair of scales can be made uniform, improving accuracy.
しかし、上記構成においても、さらに高精度な
デジタル測長器が要求される場合においては、受
光素子の受光量は完全には均一となつていない。 However, even with the above configuration, when a digital length measuring device with higher precision is required, the amount of light received by the light receiving element is not completely uniform.
そこで、本考案者らが上記問題を解決するため
原因を調査した所、下記の原因によることがわか
つた。 In order to solve the above problem, the present inventors investigated the cause and found that it was caused by the following.
発光素子、凸レンズ等の取付誤差による発光素
子と凸レンズの偏心や凸レンズの収差等の形状誤
差から、発光素子からの光が完全には平行光とな
つていない。 Due to eccentricity between the light emitting element and the convex lens due to mounting errors of the light emitting element and the convex lens, and shape errors such as aberrations of the convex lens, the light from the light emitting element is not completely parallel light.
また、固定スケールと受光素子間の距離が大き
く光の各スケールの格子状パターン通過後の回析
や光の反射等の影響を受けやすく、各受光素子の
受光量に差異が発生する。さらに、スケールと受
光素子の受光面とが平行でなく、また追従性もな
いため移動スケールが移動するとスケールと受光
素子の受光面との距離及び角度が変化し受光量が
変動する。 Furthermore, the distance between the fixed scale and the light receiving element is large, making it susceptible to the effects of diffraction and reflection of light after light passes through the lattice pattern of each scale, resulting in differences in the amount of light received by each light receiving element. Furthermore, since the scale and the light-receiving surface of the light-receiving element are not parallel, and there is no followability, when the moving scale moves, the distance and angle between the scale and the light-receiving surface of the light-receiving element change, and the amount of light received fluctuates.
また、発光素子が可視光の時、受光素子の感度
が悪いために発光素子の消費電流を多く必要とす
る欠点もあつた。 Furthermore, when the light emitting element emits visible light, the sensitivity of the light receiving element is poor, so that the light emitting element consumes a large amount of current.
本考案は係る上記の欠点に鑑みなされたもので
固定スケールと受光素子を直接もしくは僅かなす
き間を有して近接配置させるとともに、この固定
スケールと受光素子を移動スケールの変化に追従
して動かせることによつて、常に移動スケールと
の間隔を一定ならしめ、各受光素子の受光量を均
一にし、しかも、受光量を増大して、精度の安定
性及び向上を可能としたものである。 The present invention was developed in view of the above-mentioned drawbacks, and the fixed scale and the light-receiving element are arranged directly or close to each other with a slight gap, and the fixed scale and the light-receiving element can be moved to follow changes in the moving scale. This makes it possible to always keep the distance from the moving scale constant, to make the amount of light received by each light receiving element uniform, and to increase the amount of light received, thereby making it possible to stabilize and improve accuracy.
つぎに、本考案をデジタルダイヤルゲージに応
用した場合の実施例について第６図以下の図面に
もとづいて説明する。 Next, an embodiment in which the present invention is applied to a digital dial gauge will be described with reference to FIG. 6 and subsequent drawings.
第６図は本考案の実施例の要部断面図である。 FIG. 6 is a sectional view of essential parts of an embodiment of the present invention.
第６図に示す要部断面図は第２図に示す従来例
のＡ−Ａ断面図と同位置における断面図である。
尚第１図から第５図までの図と同一の部分は同一
の符号を付して説明を省略する。 The main part sectional view shown in FIG. 6 is a sectional view at the same position as the AA sectional view of the conventional example shown in FIG.
Note that the same parts as in the figures from FIG. 1 to FIG. 5 are designated by the same reference numerals, and explanations thereof will be omitted.
第６図において、受光素子１７は、固定スケー
ル１１の格子状パターン面と反対側の面との受光
面とを密着するように固定スケール１１に接着等
により固着されている。受光素子を保持する受光
素子取付板２３は、枠体１に固定された弾性部材
１９に接着固定されており、枠体１にネジ止めさ
れた受体２０及び押圧用弾性部材２１により印刷
によるスペーサ１８を有する固定スケール１１、
受光素子１７、受光素子取付板２３が共に常時移
動スケール１０側に押圧されている。 In FIG. 6, the light-receiving element 17 is fixed to the fixed scale 11 by adhesive or the like so that the light-receiving surface of the fixed scale 11 is in close contact with the lattice pattern surface of the fixed scale 11 and the light-receiving surface of the opposite surface. The light-receiving element mounting plate 23 that holds the light-receiving element is adhesively fixed to an elastic member 19 fixed to the frame 1, and a spacer is printed by the receiver 20 screwed to the frame 1 and the pressing elastic member 21. a fixed scale 11 having 18;
Both the light receiving element 17 and the light receiving element mounting plate 23 are constantly pressed toward the movable scale 10 side.
上記構成によつて、受光素子１７は移動スケー
ル１０と固定スケール１１の動きに追従し、しか
も固定スケール１１の格子状パターン部と受光素
子１７の受光面との距離は固定スケールの板厚の
みとなり非常に小さくなる。 With the above configuration, the light receiving element 17 follows the movement of the moving scale 10 and the fixed scale 11, and the distance between the lattice pattern part of the fixed scale 11 and the light receiving surface of the light receiving element 17 is only the thickness of the fixed scale. becomes very small.
第７図及び第８図は本実施例における受光素子
と固定スケールとの固着状態を示す図である。 FIGS. 7 and 8 are diagrams showing the state in which the light receiving element and the fixed scale are fixed in this embodiment.
固定スケール１１の印刷によるスペーサ１８及
び格子状パターンＰを有する面１１ａとは反対の
面１１ｂと受光素子１７の受光面１７ａとが密着
するように受光素子１７と固定スケール１１とが
固着されている。また、格子状パターンＰより受
光素子の受光面１７ａは広範囲であり、その固着
のときの取り付け精度は必要としない。 The light-receiving element 17 and the fixed scale 11 are fixed so that the light-receiving surface 17a of the light-receiving element 17 is in close contact with the surface 11b opposite to the surface 11a having the printed spacer 18 and the lattice pattern P of the fixed scale 11. . In addition, the light receiving surface 17a of the light receiving element has a wider range than the grid pattern P, and mounting accuracy is not required when fixing the light receiving surface 17a.
第９図に本考案のもう一つの実施例の要部断面
図を示す。 FIG. 9 shows a sectional view of a main part of another embodiment of the present invention.
第９図に示す要部断面図は第２図に示す従来例
のＡ−Ａ断面図と同位置における断面図である。
尚、第１図から第８図までの図と同一の部分は同
一の符号を付して説明を省略する。 The main part sectional view shown in FIG. 9 is a sectional view at the same position as the AA sectional view of the conventional example shown in FIG.
Note that the same parts as in the figures from FIG. 1 to FIG. 8 are designated by the same reference numerals, and the explanation thereof will be omitted.
第９図において、受光素子１７と固定スケール
との間の間隔を一定に保持し、かつ平行に保つた
めの受光素子スペーサ２４を固定スケール１１と
受光素子取付板２３との間に介し、接着剤等で固
定している。上記構成により、第６図と同様な効
果を有することができる。 In FIG. 9, a light-receiving element spacer 24 is inserted between the fixed scale 11 and the light-receiving element mounting plate 23 to maintain a constant distance between the light-receiving element 17 and the fixed scale and to keep them parallel. etc. is fixed. With the above configuration, it is possible to have the same effect as in FIG. 6.
以上詳記したとおり、本考案における受光素子
は固定スケールに固着されているので、移動スケ
ール及び固定スケールのいかなる動きにも追従す
ることができ移動スケールが動いても受光素子の
受光量は変化しない。 As detailed above, since the light-receiving element in the present invention is fixed to the fixed scale, it can follow any movement of the moving scale and the fixed scale, and the amount of light received by the light-receiving element does not change even if the moving scale moves. .
また、受光素子と固定スケール間の距離が非常
に小さいので、発光素子からの光が凸レンズによ
つて平行光とならなくても、スケールの格子状パ
ターン部通過後の光の回析や光の反射の影響を得
けにくく各受光素子の受ける受光量が均一とな
る。これらにより、受光素子の受光量は完全に均
一化することが可能となり、高精度なデジタル測
長器を提供することができる。 In addition, since the distance between the light receiving element and the fixed scale is very small, even if the light from the light emitting element does not become parallel light due to the convex lens, it will cause diffraction and light distortion after passing through the lattice pattern of the scale. The influence of reflection is less likely to occur, and the amount of light received by each light-receiving element becomes uniform. As a result, the amount of light received by the light-receiving element can be made completely uniform, and a highly accurate digital length measuring device can be provided.
さらに、受光素子と固定スケール間の距離が小
さくなることにより、受光素子の受光量が増大
し、そのため、受光素子の出力電圧が大きくな
り、回路の応答速度の向上につながる。また、逆
に発光素子の消費電流を減少することが可能とな
り、電池駆動式のデジタル測長器において、電池
寿命を長くすることも可能となる。 Furthermore, by reducing the distance between the light receiving element and the fixed scale, the amount of light received by the light receiving element increases, which increases the output voltage of the light receiving element, leading to an improvement in the response speed of the circuit. Moreover, conversely, it becomes possible to reduce the current consumption of the light emitting element, and it becomes possible to extend the battery life of a battery-powered digital length measuring device.
本考案は上記のとおり、固定スケールと受光素
子とを直接もしくは近接配置させ、この固定スケ
ールと受光素子とを移動スケールに対して、追従
可能としたので、受光素子の受光量を増大させる
ことができ、誤差がなく、応答性の良い、しかも
消費電流の少ないデジタル測長器を提供すること
が可能となり、その実用的効果は極めて大であ
る。 As mentioned above, in the present invention, the fixed scale and the light-receiving element are arranged directly or in close proximity, and the fixed scale and the light-receiving element can follow the moving scale, so that the amount of light received by the light-receiving element can be increased. It has become possible to provide a digital length measuring device that is accurate, error-free, has good responsiveness, and has low current consumption, and its practical effects are extremely large.
第１図は従来のデジタルダイヤルゲージの要部
説明図、第２図は第１図のＡ−Ａ線断面図、第３
図は従来のデジタルダイヤルゲージのギヤツプ保
持装置の詳細断面図、第４図は第３図のＢ−Ｂ線
断面図、第５図は第３図のＣ−Ｃ線断面図、第６
図は本考案の実施例のデジタルダイヤルゲージの
要部断面図、第７図乃至第８図は受光素子の固定
スケールへの固着状態を示す図、第９図は本考案
の受光素子スペーサを用いたときの実施例のデジ
タルダイヤルゲージの要部断面図である。
１……枠体、２……スピンドル、９……移動ス
ケール取付板、１０……移動スケール、１１……
固定スケール、１２……固定スケール取付板、１
４……発光素子、１５……凸レンズ、１６……受
光素子取付基板、１７……受光素子、１８……ス
ペーサ、１９……弾性部材、１９ａ……延出端、
２０……受体、２１……押圧用弾性部材、２３…
…受光素子取付板、２４……受光素子スペーサ。
Fig. 1 is an explanatory diagram of the main parts of a conventional digital dial gauge, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3
The figure is a detailed sectional view of a gap holding device of a conventional digital dial gauge, Figure 4 is a sectional view taken along line B-B in Figure 3, Figure 5 is a sectional view taken along line C-C in Figure 3, and Figure 6 is a sectional view taken along line C-C in Figure 3.
The figure is a sectional view of the main part of a digital dial gauge according to an embodiment of the present invention, Figures 7 and 8 are diagrams showing how the light-receiving element is fixed to the fixed scale, and Figure 9 is a diagram showing the use of the light-receiving element spacer of the present invention. FIG. 2 is a cross-sectional view of the main parts of the digital dial gauge according to the embodiment. DESCRIPTION OF SYMBOLS 1... Frame body, 2... Spindle, 9... Moving scale mounting plate, 10... Moving scale, 11...
Fixed scale, 12...Fixed scale mounting plate, 1
4... Light emitting element, 15... Convex lens, 16... Light receiving element mounting board, 17... Light receiving element, 18... Spacer, 19... Elastic member, 19a... Extension end,
20... Receiver, 21... Elastic member for pressing, 23...
...Photodetector mounting plate, 24...Photodetector spacer.
Claims (1)
移動スケールと、この一対のスケールを挟んで対
向配置の受光素子と発光素子とを有し、前記移動
体の移動量を電気的に検出するようにしたデジタ
ル測長器において、前記固定スケールは、前記枠
体に固定された弾性部材の延出端に固着された基
板上に受光素子と接触もしくは僅かな隙間を有し
て固着するとともに、前記枠体に固定された受体
に設けられた押圧用弾性部材によつて常時前記移
動スケール側にスペーサを介して押圧されている
ことを特徴とするデジタル測長器。 It has a fixed scale provided on a frame body, a moving scale provided on a movable body, and a light receiving element and a light emitting element arranged opposite to each other with the pair of scales sandwiched therebetween, and electrically detects the amount of movement of the movable body. In the digital length measuring device, the fixed scale is fixed to a substrate fixed to an extending end of an elastic member fixed to the frame, in contact with the light receiving element or with a slight gap, and A digital length measuring device, characterized in that the digital length measuring device is constantly pressed against the movable scale via a spacer by a pressing elastic member provided on a receiver fixed to the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11137382U JPS5915903U (en) | 1982-07-21 | 1982-07-21 | digital length measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11137382U JPS5915903U (en) | 1982-07-21 | 1982-07-21 | digital length measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5915903U JPS5915903U (en) | 1984-01-31 |
| JPS6310485Y2 true JPS6310485Y2 (en) | 1988-03-29 |
Family
ID=30258629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11137382U Granted JPS5915903U (en) | 1982-07-21 | 1982-07-21 | digital length measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5915903U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH087054B2 (en) * | 1990-10-22 | 1996-01-29 | 株式会社ミツトヨ | Displacement detector |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2886717A (en) * | 1953-03-14 | 1959-05-12 | Ferranti Ltd | Measuring apparatus |
| JPS521323U (en) * | 1975-06-23 | 1977-01-07 | ||
| JPS54104868A (en) * | 1978-02-06 | 1979-08-17 | Mitsutoyo Seisakusho | Linear scale type measuring instrument |
| GB2017304A (en) * | 1978-03-10 | 1979-10-03 | Heidenhain Gmbh Dr Johannes | Length measuring arrangement |
| JPS5531882A (en) * | 1978-08-25 | 1980-03-06 | Commissariat Energie Atomique | Hydrophobic substrate and its manufacture |
| JPS56161384A (en) * | 1980-05-16 | 1981-12-11 | Earth Chem Corp Ltd | Novel steroid |
| JPS5717241A (en) * | 1980-07-04 | 1982-01-28 | Hitachi Ltd | Dynamic emphasis circuit |
-
1982
- 1982-07-21 JP JP11137382U patent/JPS5915903U/en active Granted
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2886717A (en) * | 1953-03-14 | 1959-05-12 | Ferranti Ltd | Measuring apparatus |
| JPS521323U (en) * | 1975-06-23 | 1977-01-07 | ||
| JPS54104868A (en) * | 1978-02-06 | 1979-08-17 | Mitsutoyo Seisakusho | Linear scale type measuring instrument |
| GB2017304A (en) * | 1978-03-10 | 1979-10-03 | Heidenhain Gmbh Dr Johannes | Length measuring arrangement |
| JPS5531882A (en) * | 1978-08-25 | 1980-03-06 | Commissariat Energie Atomique | Hydrophobic substrate and its manufacture |
| JPS56161384A (en) * | 1980-05-16 | 1981-12-11 | Earth Chem Corp Ltd | Novel steroid |
| JPS5717241A (en) * | 1980-07-04 | 1982-01-28 | Hitachi Ltd | Dynamic emphasis circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5915903U (en) | 1984-01-31 |
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