JPH0240481Y2 - - Google Patents
Info
- Publication number
- JPH0240481Y2 JPH0240481Y2 JP14094983U JP14094983U JPH0240481Y2 JP H0240481 Y2 JPH0240481 Y2 JP H0240481Y2 JP 14094983 U JP14094983 U JP 14094983U JP 14094983 U JP14094983 U JP 14094983U JP H0240481 Y2 JPH0240481 Y2 JP H0240481Y2
- Authority
- JP
- Japan
- Prior art keywords
- drive shaft
- amount
- movement
- position detection
- springs
- 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
- 238000001514 detection method Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
- Measuring Arrangements Characterized By The Use Of Fluids (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案は器内にスプリングを備えた空気圧式操
作器の位置検出装置に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a position detection device for a pneumatic actuator having a spring inside the device.
一般に、スプリング入りシリンダ式駆動装置で
ある空気圧式操作器においては、その移動距離の
制御および付属機器等の操作のために駆動軸の変
位置を検出する必要があり、駆動軸の位置を検出
する位置検出装置が備えられている。
Generally, in a pneumatic actuator, which is a cylinder-type drive device with a spring, it is necessary to detect the position of the drive shaft in order to control its travel distance and operate attached equipment. A position detection device is provided.
従来、この種の位置検出装置には駆動軸の移動
量をそのまま検出量として取出しているものが採
用されている。 Conventionally, this type of position detection device has adopted one that directly extracts the amount of movement of the drive shaft as a detected amount.
しかるに、この場合ピストンの移動量が大きく
なると、それだけ他の機構に伝達される力が大き
くなるという欠点がある。 However, in this case, there is a drawback that as the amount of movement of the piston increases, the force transmitted to other mechanisms increases accordingly.
そこで、第１図に示すようにピストン１の移動
量を、傾斜板２あるいはリンク（図示せず）を用
いた減少機構により縮小させて他の機構に伝達す
る位置検出装置も採用されている。 Therefore, as shown in FIG. 1, a position detection device is also employed in which the amount of movement of the piston 1 is reduced by a reduction mechanism using an inclined plate 2 or a link (not shown) and transmitted to another mechanism.
ところが、この場合シリンダ３外において装置
の占める場所がきわめて大きくなり、空間利用が
妨げられるという不都合がある。 However, in this case, the device occupies an extremely large space outside the cylinder 3, which is disadvantageous in that space utilization is hindered.
本考案はこのような事情に鑑みなされたもの
で、それぞれの所定のばね定数をもつた両ばね間
に移動板を介装するというきわめて簡単な構成に
より、駆動軸の移動量を確実に検出でき、しかも
その検出量を縮小させて取出すことができる空気
圧式操作器の位置検出装置を提供するものであ
る。以下、その構成等を図に示す実施例によつて
詳細に説明する。
The present invention was developed in view of these circumstances, and uses an extremely simple configuration in which a movable plate is interposed between two springs each having a predetermined spring constant, thereby making it possible to reliably detect the amount of movement of the drive shaft. Moreover, the present invention provides a position detecting device for a pneumatic operating device that can reduce the detected amount and take out the detected amount. Hereinafter, the configuration and the like will be explained in detail by referring to embodiments shown in the drawings.
第２図は本考案に係る空気圧式操作器の位置検
出装置を示す断面図である。同図において、符号
１１で示すものは操作器の外郭を形成するシリン
ダーで、上部に開口を覆う上蓋１２がボルルト１
３により取付けられている。１４は前記シリンダ
ー１１内を上下方向に移動する駆動軸で、上端に
ピストン１５が、また下端に図示しない被制御体
が固定されている。１６はばね弾性力を調整する
調整ねじで、前記シリンダ１１内に一部を臨ませ
前記駆動軸１４の下端部に昇降自在に取付けられ
ている。１７は鍔１８を有するスプリング受け
で、前記調整ねじ１６の上端部に取付けられてい
る。１９は前記駆動軸１４の軸線に沿つて昇降す
るコイルばねで、それぞれが所定のばね定数k1，
k2をもち互いに同軸線上に位置するように連結さ
れた２つの上部コイルばね２０、下部コイルばね
２１からなり、前記ピストン１５とスプリング受
け１７間に弾装されている。２２は中央部に鍔２
３を有する移動板で、前記駆動軸１４が挿通され
て前記両コイルばね２０，２１間に介装されてお
り、駆動軸１４の移動量を検出可能に構成されて
いる。２４は先端部が前記シリンダー１１外に露
呈する計測軸で、前記移動板２２の鍔２３に垂設
されており、移動板２２の移動量を外部に取り出
すことができるように構成されている。
FIG. 2 is a sectional view showing a position detection device for a pneumatic actuator according to the present invention. In the same figure, the symbol 11 is a cylinder that forms the outer shell of the operating device, and a top lid 12 that covers the opening is attached to the bolt 1.
It is attached by 3. Reference numeral 14 denotes a drive shaft that moves vertically within the cylinder 11, and has a piston 15 fixed to its upper end and a controlled body (not shown) fixed to its lower end. Reference numeral 16 denotes an adjustment screw for adjusting the spring elastic force, which is attached to the lower end of the drive shaft 14 so as to be movable up and down, with a portion facing inside the cylinder 11. Reference numeral 17 denotes a spring receiver having a flange 18, which is attached to the upper end of the adjustment screw 16. 19 is a coil spring that moves up and down along the axis of the drive shaft 14, each having a predetermined spring constant k 1 ,
It consists of two upper coil springs 20 and a lower coil spring 21 which are connected to each other so as to be located coaxially with each other, and are elastically mounted between the piston 15 and the spring receiver 17. 22 has 2 tsuba in the center
3, through which the drive shaft 14 is inserted, is interposed between the coil springs 20 and 21, and is configured to be able to detect the amount of movement of the drive shaft 14. Reference numeral 24 denotes a measuring shaft whose tip is exposed outside the cylinder 11, and is vertically installed on the collar 23 of the movable plate 22, so that the amount of movement of the movable plate 22 can be taken out to the outside.
このように構成された空気圧式操作器の位置検
出装置においては、上蓋１２の導圧孔１２ａから
シリンダ１１内に空気圧が供給されることにより
コイルばね１９の弾撥力に抗して駆動軸１４が移
動する。このとき移動板２２および計測軸２４も
同方向に移動するから、計測軸２４の移動量を計
測して駆動軸１４の移動量を検出することができ
る。 In the position detection device for a pneumatic actuator configured in this way, air pressure is supplied into the cylinder 11 from the pressure guiding hole 12a of the top cover 12, so that the drive shaft 14 is moved against the elastic force of the coil spring 19. moves. At this time, since the moving plate 22 and the measurement shaft 24 also move in the same direction, the amount of movement of the measurement shaft 24 can be measured and the amount of movement of the drive shaft 14 can be detected.
今ここで、駆動軸１４の移動距離δ0（cm）、供給
圧力Ｐ（Kg／cm2）、ピストン１５の有効面積Ａ
（cm2）、コイルばね１９のばね定数K0（Kg／cm）
とすると、
δ0＝PA／k0 ……
また、上部コイルばね２０のたわみおよび下部
コイルばね２１のたわみをそれぞれδ1（cm）、δ2
（cm）とすると、δ1＝PA／k1…… δ2＝PA／
k2……
各ばね１９，２０，２１に加えられる空気圧は
等しいから，，を整理してk0δ0＝k1δ1＝
k2δ2 ……
よりδ2＝k0／k2×δ0 ……
においてk2／k0＝Ｎとおくと、δ2＝１／Ｎ×
δ0が得られる。 Here, the moving distance δ 0 (cm) of the drive shaft 14, the supply pressure P (Kg/cm 2 ), and the effective area A of the piston 15
(cm 2 ), spring constant K 0 of coil spring 19 (Kg/cm)
Then, δ 0 =PA/k 0 ... Also, the deflection of the upper coil spring 20 and the deflection of the lower coil spring 21 are respectively δ 1 (cm) and δ 2
(cm), δ 1 = PA/k 1 ... δ 2 = PA/
k 2 ... Since the air pressures applied to each spring 19, 20, and 21 are equal, rearranging , k 0 δ 0 = k 1 δ 1 =
k 2 δ 2 ... From δ 2 = k 0 / k 2 × δ 0 ... If we set k 2 / k 0 = N, then δ 2 = 1/N ×
δ 0 is obtained.
すなわち計測軸２４の移動量は駆動軸１４の移
動量を１／Ｎに縮小して検出することができる。 That is, the amount of movement of the measurement shaft 24 can be detected by reducing the amount of movement of the drive shaft 14 to 1/N.
なお、ばね定数k0およびδ0は予めシリンダ１１
を設計する段階で決定される数値であるため、計
測軸２４の移動量をどの程度にしたいかの要求に
よりk2を適宜変更して希望する数値を自由に選ぶ
ことができる。 Note that the spring constants k 0 and δ 0 are determined in advance by the cylinder 11.
Since this value is determined at the stage of designing, the desired value can be freely selected by changing k 2 as appropriate depending on the desired amount of movement of the measurement axis 24.
以上説明したように本考案によれば、それぞれ
が所定のばね定数をもつた２つのばねからなり、
これら両ばね間に駆動軸の移動量を検出可能にす
る移動板を介装したので、駆動軸の移動量を確実
に検出でき、しかもその検出量を縮小させて取出
すことができる。また、従来のようにシリンダ外
に装置を備えるものではないから、シリンダ外部
の空間を有効に利用することができる。
As explained above, according to the present invention, each spring is composed of two springs each having a predetermined spring constant,
Since a moving plate is interposed between these springs to enable detection of the amount of movement of the drive shaft, the amount of movement of the drive shaft can be reliably detected, and the detected amount can be reduced and taken out. Furthermore, since no device is provided outside the cylinder as in the prior art, the space outside the cylinder can be used effectively.
第１図は従来の空気圧式操作器の位置検出装置
を示す断面図、第２図は本考案に係る空気圧式操
作器の位置検出装置を示す断面図である。
１１……シリンダ、１４……駆動軸、１９……
コイルばね、２０……上部コイルばね、２１……
下部コイルばね、２２……移動板。
FIG. 1 is a sectional view showing a conventional position detection device for a pneumatic actuator, and FIG. 2 is a sectional view showing a position detection device for a pneumatic actuator according to the present invention. 11...Cylinder, 14...Drive shaft, 19...
Coil spring, 20... Upper coil spring, 21...
Lower coil spring, 22... moving plate.
Claims (1)
ねの弾撥力に抗して移動する駆動軸を備えた空気
圧式操作器の位置検出装置において、前記コイル
ばねはそれぞれが所定のばね定数をもち互いに同
軸線上に位置するように連結された２つのばねか
らなり、これら両ばね間に前記駆動軸の移動量を
検出可能にする移動板を介装したことを特徴とす
る空気圧式操作器の位置検出装置。 In a position detection device for a pneumatic actuator, which includes a drive shaft that moves against the elastic force of a coil spring when air pressure is supplied into the device, each of the coil springs has a predetermined spring constant and Position detection of a pneumatic actuator comprising two springs connected so as to be positioned on a coaxial line, and a moving plate interposed between these springs to enable detection of the amount of movement of the drive shaft. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14094983U JPS6049411U (en) | 1983-09-13 | 1983-09-13 | Position detection device for pneumatic actuators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14094983U JPS6049411U (en) | 1983-09-13 | 1983-09-13 | Position detection device for pneumatic actuators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6049411U JPS6049411U (en) | 1985-04-06 |
| JPH0240481Y2 true JPH0240481Y2 (en) | 1990-10-29 |
Family
ID=30315390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14094983U Granted JPS6049411U (en) | 1983-09-13 | 1983-09-13 | Position detection device for pneumatic actuators |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6049411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015049958A1 (en) * | 2013-10-01 | 2015-04-09 | 浜松ホトニクス株式会社 | Optical module |
-
1983
- 1983-09-13 JP JP14094983U patent/JPS6049411U/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015049958A1 (en) * | 2013-10-01 | 2015-04-09 | 浜松ホトニクス株式会社 | Optical module |
| JP2015073338A (en) * | 2013-10-01 | 2015-04-16 | 浜松ホトニクス株式会社 | Optical module |
| CN105594114A (en) * | 2013-10-01 | 2016-05-18 | 浜松光子学株式会社 | Optical module |
| CN105594114B (en) * | 2013-10-01 | 2018-09-07 | 浜松光子学株式会社 | Optical module |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6049411U (en) | 1985-04-06 |
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