JP2503957B2 - Pressure switch - Google Patents
Pressure switchInfo
- Publication number
- JP2503957B2 JP2503957B2 JP61033656A JP3365686A JP2503957B2 JP 2503957 B2 JP2503957 B2 JP 2503957B2 JP 61033656 A JP61033656 A JP 61033656A JP 3365686 A JP3365686 A JP 3365686A JP 2503957 B2 JP2503957 B2 JP 2503957B2
- Authority
- JP
- Japan
- Prior art keywords
- fixed
- pressure
- piece
- switch
- contact
- 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
- Switches Operated By Changes In Physical Conditions (AREA)
Description
【発明の詳細な説明】 （イ）産業上の利用分野 この発明は、例えば、20〜80ミリ水柱（mmH2O）の微
圧で作動しガス漏れその他を検出するような圧力スイッ
チに関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a pressure switch that operates at a slight pressure of, for example, 20 to 80 mm of water column (mmH 2 O) to detect gas leakage and the like.
（ロ）従来の技術 従来、上述例の圧力スイッチとしては、例えば実公昭
60−15228号公報に記載のスイッチがある。(B) Conventional technology Conventionally, as the pressure switch of the above-mentioned example, for example,
There is a switch described in Japanese Patent No. 60-15228.
すなわち、第５図、第６図に示す如く、内側のスイッ
チベース81と外側のスイッチケース82とを備え、上述の
スイッチケース82の受圧口83下部と、断面凹状のスイッ
チベース81の上端との間に、スペーサ84を介して受圧素
子85を配設している。That is, as shown in FIG. 5 and FIG. 6, an inner switch base 81 and an outer switch case 82 are provided, and the lower part of the pressure receiving port 83 of the switch case 82 and the upper end of the switch base 81 having a concave cross section are provided. A pressure receiving element 85 is arranged between the two via a spacer 84.
また、上述の受圧素子85の下部に、この受圧素子85の
可撓変位に連動して進退するプランジャ86を設け、この
プランジャ86の頂部に固定したキャップ状のバネ座87
と、スイッチベース81の内底部88との間にスプリング89
を張架している。Further, a plunger 86 that advances and retreats in conjunction with the flexible displacement of the pressure receiving element 85 is provided below the pressure receiving element 85, and a cap-shaped spring seat 87 fixed to the top of the plunger 86.
Between the switch base 81 and the inner bottom 88 of the switch base 81.
Is stretched.
さらに、上述のスイッチベース81に入力固定端子90と
出力固定端子91とをインサート形成すると共に、入力固
定端子90の立上り部と導通する可動片92を設け、上述の
プランジャ86の進退動作に連動して、この可動片92が下
動した時、この可動片92の遊端接点部を前述の出力固定
端子91の立上り部上端の接点部93に圧接することで、上
述の各要素90〜93からなるアクションスイッチ94をON作
動すべく構成した圧力スイッチである。Further, the input fixed terminal 90 and the output fixed terminal 91 are insert-formed in the switch base 81 described above, and the movable piece 92 that is electrically connected to the rising portion of the input fixed terminal 90 is provided, and is linked to the forward / backward movement of the plunger 86. Then, when the movable piece 92 moves downward, the free end contact portion of the movable piece 92 is pressed into contact with the contact portion 93 at the upper end of the rising portion of the output fixed terminal 91, so that the elements 90 to 93 described above Is a pressure switch configured to turn ON the action switch 94.
この圧力スイッチは、上述のプランジャ86の軸部中央
にテーパ状の開口95を形成し、可動片92に一端を係止さ
せた付勢バネ96の他端を、スクリュー97の上端ロッド部
98に係合すると共に、プランジャ86の下部にスプリング
99圧を調整する調整ネジ100を螺合している。In this pressure switch, a tapered opening 95 is formed in the center of the shaft portion of the plunger 86 described above, and the other end of the biasing spring 96 whose one end is locked to the movable piece 92 is connected to the upper end rod portion of the screw 97.
A spring on the bottom of the plunger 86
The adjusting screw 100 for adjusting the 99 pressure is screwed.
上記構成の従来装置において、圧力−スイッチングス
トローク特性を微調整するため、調整ネジ100およびス
クリュー97を操作すると、付勢バネ96の中途部がプラン
ジャ86のテーパ状開口95の口縁に接触するため、この付
勢バネ96のバネ圧力が変化するので、上述の圧力−スト
ローク特性を直線的に調整することが困難で、調整操作
にともなうスイッチング特性にばらつきが生ずる問題点
を有していた。In the conventional device having the above configuration, when the adjusting screw 100 and the screw 97 are operated to finely adjust the pressure-switching stroke characteristic, the middle part of the biasing spring 96 comes into contact with the rim of the tapered opening 95 of the plunger 86. However, since the spring pressure of the biasing spring 96 changes, it is difficult to linearly adjust the pressure-stroke characteristics described above, and there is a problem in that the switching characteristics vary due to the adjustment operation.
（ハ）発明が解決しようとする課題 この発明は、圧力−スイッチングストローク特性を直
線的に調整することができて、調整操作にともなうスイ
ッチング特性にばらつきが生じない圧力スイッチの提供
を目的とする。(C) Problem to be Solved by the Invention An object of the present invention is to provide a pressure switch capable of linearly adjusting the pressure-switching stroke characteristic and causing no variation in the switching characteristic due to the adjusting operation.
（ニ）課題を解決するための手段 この発明は、流体の圧力変化に対応して伸縮する受圧
素子と、上記受圧素子に連動して進退するプランジャ
と、上記プランジャの進退動作に連動して接点部間を開
閉するアクションスイッチとを備えた圧力スイッチであ
って、固定片と、固定接点を設定した固定舌片とを所定
間隔を隔てて対設し、上記固定片に、該固定片と固定舌
片との中間位置に延出して、上下方向に変位可能な延出
端部を形成し、前記固定片立設側に、弾性部材により環
状に形成した可動片の一端を係止すると共に、該可動片
の他端側を可動接点に設定して、該可動接点を前記固定
舌片の固定接点と対応させ、上記可動片の可動接点側に
付勢バネ一端の可動端側を係止すると共に、該付勢バネ
他端の支点部を前記固定片の延出端部に係止して、前記
アクションスイッチを構成し、上記アクションスイッチ
の固定片の延出端部の対接位置に、上記付勢バネの支点
部の位置を外部から調整する調整ネジを配設した圧力ス
イッチであることを特徴とする。(D) Means for Solving the Problems The present invention is directed to a pressure receiving element that expands and contracts in response to a change in fluid pressure, a plunger that moves forward and backward in conjunction with the pressure receiving element, and a contact that moves in conjunction with the forward and backward movement of the plunger. A pressure switch equipped with an action switch for opening and closing parts, wherein a fixed piece and a fixed tongue piece having fixed contacts are installed at a predetermined interval and fixed to the fixed piece. Extending to an intermediate position with the tongue piece, forming an extending end portion that is displaceable in the vertical direction, and locking one end of a movable piece annularly formed by an elastic member on the fixed piece standing side, The other end side of the movable piece is set as a movable contact, the movable contact is made to correspond to the fixed contact of the fixed tongue piece, and the movable end side of one end of the biasing spring is locked to the movable contact side of the movable piece. At the same time, the fulcrum of the other end of the biasing spring is locked to the extending end of the fixing piece. Then, the action switch is constituted by a pressure switch in which an adjusting screw for adjusting the position of the fulcrum of the biasing spring from the outside is provided at the contact position of the extended end of the fixed piece of the action switch. It is characterized by being.
（ホ）発明の効果 この発明によれば、上述の調整ネジを操作すること
で、付勢バネの支点位置と、アクションスイッチの動作
荷重および動作ストロークとの両者が変化する。(E) Effect of the Invention According to the present invention, both the fulcrum position of the biasing spring and the operating load and operating stroke of the action switch are changed by operating the adjusting screw.
上述の動作荷重および動作ストロークの変化により圧
力−スイッチングストローク特性を調整することがで
き、このとき付勢バネの最大バネ圧力は変化せず、その
圧力の作用する方向のみが変化するので、上述の圧力−
スイッチングストローク特性を直線的に増減調整するこ
とができて、調整操作にともなうスイッチング特性にば
らつきが生じない効果がある。The pressure-switching stroke characteristics can be adjusted by changing the above-mentioned operating load and operating stroke. At this time, the maximum spring pressure of the biasing spring does not change, and only the direction in which the pressure acts changes. Pressure −
The switching stroke characteristic can be linearly increased / decreased and adjusted, and there is an effect that the switching characteristic does not vary with the adjustment operation.
（ヘ）発明の実施例 この発明の一実施例を以下図面に基づいて詳述する。(F) Embodiment of the Invention One embodiment of the present invention will be described below in detail with reference to the drawings.
図面は圧力スイッチを示し、第１図において、この圧
力スイッチは、筒状の受圧フランジ１と、 この受圧フランジ１の上端フランジ部２に取付けた受
圧口３を有する円板状の保護キャップ４と、 合成樹脂製のスイッチケース５と、 このスイッチケース５の上下方向中間部の環状凹所６
に取付けたリング状で、かつ金属製の保持板７と、 前述の受圧口３に連通する受圧室８に配設し、ガスそ
の他の液体圧力の変化に対応して伸縮する受圧素子９
と、 この受圧素子９に連動して進退し、上述のスイッチケ
ース５のプランジャ摺動孔10内に配設したプランジャ11
と、 上述のスイッチケース５におけるスカート部12の係止
孔13,13に、係止突起14,14を係合することで、上述のス
イッチケース５に固定したスイッチベース15と、 このスイッチベース15に組付けられ、上述のプランジ
ャ11の進退動作に連動して接点部間を開閉するアクショ
ンスイッチ16とを備えている。The drawing shows a pressure switch. In FIG. 1, the pressure switch comprises a cylindrical pressure receiving flange 1 and a disc-shaped protective cap 4 having a pressure receiving port 3 attached to an upper end flange portion 2 of the pressure receiving flange 1. , A switch case 5 made of synthetic resin, and an annular recess 6 at an intermediate portion in the vertical direction of the switch case 5.
A ring-shaped metal holding plate 7 attached to the pressure receiving element 8 arranged in the pressure receiving chamber 8 communicating with the pressure receiving port 3 and expanding and contracting in response to changes in pressure of gas or other liquid.
And the plunger 11 which moves back and forth in conjunction with the pressure receiving element 9 and is disposed in the plunger sliding hole 10 of the switch case 5 described above.
And a switch base 15 fixed to the switch case 5 by engaging the locking protrusions 14 and 14 with the locking holes 13 and 13 of the skirt portion 12 of the switch case 5 described above. And an action switch 16 that is opened and closed between the contact portions in association with the forward / backward movement of the plunger 11 described above.
ここで、前述の受圧フランジ１はその下端を、保持板
７の上部外周に気密状に固定している。The lower end of the pressure receiving flange 1 is fixed to the outer periphery of the upper portion of the holding plate 7 in an airtight manner.
また、前述の受圧素子９は、下端を保持板７に固定し
た円筒状の金属ベローズ17と、この金属ベローズ17の上
端開口を密封するベローズ天板18と、このベローズ天板
18上面に密着固定した金属補強板19との三者17,18,19に
より構成し、受圧素子９外部を前述の受圧室８に設定す
ると共に、受圧素子９内部を大気圧室20に設定してい
る。The pressure-receiving element 9 includes a cylindrical metal bellows 17 having a lower end fixed to the holding plate 7, a bellows top plate 18 for sealing the upper end opening of the metal bellows 17, and the bellows top plate.
18 is composed of a metal reinforcing plate 19 and a metal reinforcing plate 19 closely fixed to the upper surface, and the outside of the pressure receiving element 9 is set to the pressure receiving chamber 8 and the inside of the pressure receiving element 9 is set to the atmospheric pressure chamber 20. ing.
さらに、前述のスイッチベース15の右側には入力固定
端子21をインサート形成し、また左側には出力固定端子
22をインサート形成している。Furthermore, the input fixed terminal 21 is insert-formed on the right side of the switch base 15, and the output fixed terminal is on the left side.
22 is insert-formed.
そして上述の入力固定端子21の上端をスイッチ内部空
間23内に延出し、この延出上端を水平方向に折曲げるこ
とで、入力固定端子21上端に、同端子21と一体形成の固
定片24を形成している。Then, the upper end of the input fixing terminal 21 is extended into the switch internal space 23, and the extending upper end is bent in the horizontal direction, so that the fixing piece 24 integrally formed with the terminal 21 is formed on the upper end of the input fixing terminal 21. Is forming.
上述の固定片24は、その遊端をプランジャ11下部と対
応する左方に延出し、この延出部に開口25を形成するこ
とで、延出端部26を上下方向に変位可能に構成してい
る。The fixed piece 24 described above has its free end extending to the left corresponding to the lower part of the plunger 11 and forming an opening 25 in this extending part, so that the extending end 26 can be displaced in the vertical direction. ing.
一方、前述の出力固定端子22の上端も同様にスイッチ
内部空間23内に延出し、この延出上端を水平方向に折曲
げることで、固定舌片27を一体形成している。On the other hand, similarly, the upper end of the output fixing terminal 22 also extends into the switch inner space 23, and the extending upper end is bent in the horizontal direction to integrally form the fixed tongue piece 27.
また、第２図にも示す如き、偏平な板バネ製の環状の
可動片28と、弓状に弯曲形成した板バネ製の付勢バネ29
とを設けている。Further, as shown in FIG. 2, an annular movable piece 28 made of a flat leaf spring and a biasing spring 29 made of a leaf spring curved in an arc shape.
And are provided.
そして、上述の可動片28の右側内端28aを、前述の固
定片24の右側折曲部30における略Ｖ字状の切込みに係止
し、かつ付勢バネ29の右端支点部31を、上述の固定片24
の左側折曲部に相当する延出端部26の略Ｖ字状の切込み
に係止すると共に、この付勢バネ29の左端における切込
み段部32,32を、可動片28の左側内部の係止部33に係合
して、上述の各要素21〜33により第３図に示すアクショ
ンスイッチ16を構成している。Then, the right inner end 28a of the movable piece 28 is locked to the substantially V-shaped notch in the right bent portion 30 of the fixed piece 24, and the right end fulcrum portion 31 of the biasing spring 29 is arranged as described above. Fixing piece 24
Is engaged with the substantially V-shaped cut of the extended end portion 26 corresponding to the left bent portion, and the cut step portions 32, 32 at the left end of the biasing spring 29 are engaged with each other inside the left side of the movable piece 28. The action switch 16 shown in FIG. 3 is configured by engaging the stop portion 33 and the above-mentioned elements 21 to 33.
このアクションスイッチ16は、プランジャ11の進退動
作に連動して、固定舌片27下面の固定接点34（第３図参
照）と、可動片28の左側上面の可動接点35（第２図参
照）との間を開閉するノーマルオープン状のスイッチで
あり、第１図においては、このアクションスイッチ16が
ON作動した状態を図示している。This action switch 16 is interlocked with the forward / backward movement of the plunger 11, and has a fixed contact 34 on the lower surface of the fixed tongue 27 (see FIG. 3) and a movable contact 35 on the upper left side of the movable piece 28 (see FIG. 2). It is a normally open switch that opens and closes the space between them. In FIG. 1, this action switch 16 is
The figure shows a state in which it is ON.
上述のプランジャ11はその下部に、固定片24を跨ぐ門
形の押子36,36を一体形成した合成樹脂製のプランジャ
で、これら各押子36,36の下端を、可動片28の中央部上
面に当接すると共に、プランジャ11の上端は前述のベロ
ーズ天板18の内面に当接させている。The above-mentioned plunger 11 is a plunger made of synthetic resin in which the gate-shaped pushers 36, 36 straddling the fixed piece 24 are integrally formed in the lower part thereof, and the lower ends of the pushers 36, 36 are located at the center of the movable piece 28. While contacting the upper surface, the upper end of the plunger 11 is in contact with the inner surface of the bellows top plate 18 described above.
ところで、前述の固定片24における左側の延出端部26
と対向するスイッベース15には金属プレート37をインサ
ート形成し、この金属プレート37に調整ネジ38を螺合し
ている。By the way, the left extending end portion 26 of the fixing piece 24 described above.
A metal plate 37 is insert-formed on the swivel base 15 facing the metal plate 37, and an adjusting screw 38 is screwed onto the metal plate 37.
この調整ネジ38は、上述の付勢バネ29の支点部31位置
をスイッチ外部から上下調整するためのネジであり、こ
の調整ネジ38の上端を常時、上述の延出端部26の折曲げ
下端に当接させている。The adjusting screw 38 is a screw for vertically adjusting the position of the fulcrum 31 of the biasing spring 29 from the outside of the switch, and the upper end of the adjusting screw 38 is always the lower end of the bent end of the extending end 26. Abutting against.
図示実施例は上記の如く構成するものにして、以下作
用を説明する。The illustrated embodiment is configured as described above, and the operation will be described below.
この圧力スイッチをガス漏れ検出に使用する場合に
は、前述の受圧口３をガス配管に連通して使用に供す
る。When this pressure switch is used for gas leak detection, the pressure receiving port 3 is connected to the gas pipe for use.
いま、第３図に実線で示す通常のノーマルオープン状
態下から、上述のガス配管にガス漏れが生じて、受圧室
８の圧力が低下し、この受圧室８と大気圧室20との間の
差圧が所定値以下に低下すると、金属ベローズ17の復元
力により受圧素子９が上動し、この受圧素子９の上動に
ともなって上述のプランジャ11が上動する。Now, from the normal normally open state shown by the solid line in FIG. 3, gas leakage occurs in the above-mentioned gas pipe, the pressure in the pressure receiving chamber 8 drops, and the pressure between the pressure receiving chamber 8 and the atmospheric pressure chamber 20 is reduced. When the pressure difference drops below a predetermined value, the pressure-receiving element 9 moves upward due to the restoring force of the metal bellows 17, and the plunger 11 moves upward as the pressure-receiving element 9 moves upward.
この結果、アクションスイッチ16は第３図に実線で示
すノーマルオープン状態から同図に仮想線で示すクロー
ズ状態つまりON状態になり、同図の各要素21,24,28,34,
22を介してガス漏れ検出電流を通電する。As a result, the action switch 16 is changed from the normally open state shown by the solid line in FIG. 3 to the closed state, that is, the ON state shown by the virtual line in FIG. 3, and each element 21, 24, 28, 34, in FIG.
A gas leak detection current is supplied via 22.
ところで、上述の圧力スイッチにおいて、例えば都市
ガス、天然ガスの差異に対応させたり或は製作誤差を吸
収するために、第４図に示す圧力−スイッチングストロ
ーク特性を調整する場合には、前述の調整ネジ38をスイ
ッチ外部から回動操作するとよい。By the way, in the above-mentioned pressure switch, when the pressure-switching stroke characteristic shown in FIG. 4 is adjusted in order to cope with a difference between city gas and natural gas or to absorb a manufacturing error, the above-mentioned adjustment is performed. It is advisable to rotate the screw 38 from outside the switch.
この調整ネジ38を操作すると、変位可能に構成した延
出端部26を介して付勢バネ29の支点部31の位置を上下方
向に可変操作することができると同時に、この付勢バネ
29を介して固定接点34に対する可動片28上の可動接点35
の接触および付勢バネ29の圧力が作用する方向が変化す
る。When the adjusting screw 38 is operated, the position of the fulcrum 31 of the biasing spring 29 can be variably operated in the vertical direction via the extending end portion 26 configured to be displaceable.
Movable contact 35 on movable piece 28 to fixed contact 34 via 29
And the direction in which the pressure of the biasing spring 29 acts changes.
ここで、上述の両者34,35の接触圧力の変化により第
４図に示す圧力−スイッチングストローク特性を調整す
ることができ、このとき上述の付勢バネ29の最大バネ圧
力は変化せず、その圧力が作用する方向のみが変化する
ので、上述の圧力−スイッチングストローク特性を第４
図に矢印で示す如く直線的に調整することができる効果
がある。Here, the pressure-switching stroke characteristic shown in FIG. 4 can be adjusted by the change in the contact pressure between the both 34 and 35, and at this time, the maximum spring pressure of the biasing spring 29 does not change, and Since only the direction in which pressure acts changes, the pressure-switching stroke characteristic described above
There is an effect that it can be adjusted linearly as shown by the arrow in the figure.
この結果、上述の調整操作にともなうスイッチング特
性にばらつきが生じない効果がある。As a result, there is an effect that the switching characteristic does not vary due to the above-described adjustment operation.
この発明の構成と、上述の実施例との対応において、 この発明の接点は、実施例の固定接点34および可動接
点35に対応し、 以下同様に、 固定端子は入力固定端子21における固定片24に対応す
るも、 この発明は、上述の実施例の構成のみに限定されるも
のではない。In the correspondence between the configuration of the present invention and the above-described embodiment, the contact of the present invention corresponds to the fixed contact 34 and the movable contact 35 of the embodiment, and similarly, the fixed terminal is the fixed piece 24 of the input fixed terminal 21. However, the present invention is not limited to the configuration of the above-described embodiment.
図面はこの発明の一実施例を示し、 第１図は圧力スイッチの縦断面図、 第２図は第１図の一部分の分解斜視図、 第３図は圧力スイッチの電気回路図、 第４図は圧力−スイッチングストローク特性図、 第５図は従来の圧力スイッチを示す縦断面図、 第６図は従来の圧力スイッチの電気回路図である。 ９……受圧素子、11……プランジャ 16……アクションスイッチ、24……固定片 26……延出端部、27……固定舌片 28……可動片、29……付勢バネ 31……支点部、34……固定接点 35……可動接点、38……調整ネジ The drawings show one embodiment of the present invention, FIG. 1 is a longitudinal sectional view of a pressure switch, FIG. 2 is an exploded perspective view of a part of FIG. 1, FIG. 3 is an electric circuit diagram of the pressure switch, and FIG. Is a pressure-switching stroke characteristic diagram, FIG. 5 is a longitudinal sectional view showing a conventional pressure switch, and FIG. 6 is an electric circuit diagram of the conventional pressure switch. 9 …… Pressure receiving element, 11 …… Plunger 16 …… Action switch, 24 …… Fixed piece 26 …… Extending end, 27 …… Fixed tongue piece 28 …… Movable piece, 29 …… Biasing spring 31 …… Support point, 34 ... Fixed contact 35 ... Moving contact, 38 ... Adjustment screw
Claims (1)
子と、上記受圧素子に連動して進退するプランジャと、
上記プランジャの進退動作に連動して接点部間を開閉す
るアクションスイッチとを備えた圧力スイッチであっ
て、 固定片（24）と、固定接点（34）を設定した固定舌片
（27）とを所定間隔を隔てて対設し、 上記固定片（24）に、該固定片（24）と固定舌片（27）
との中間位置に延出して、上下方向に変位可能な延出端
部（26）を形成し、 前記固定片（24）立設側に、弾性部材により環状に形成
した可動片（28）の一端を係止すると共に、 該可動片（28）の他端側を可動接点（35）に設定して、
該可動接点（35）を前記固定舌片（27）の固定接点（3
4）と対応させ、 上記可動片（28）の可動接点（35）側に付勢バネ（29）
一端の可動端（32）側を係止すると共に、 該付勢バネ（29）他端の支点部（31）を前記固定片（2
4）の延出端部（26）に係止して、前記アクションスイ
ッチ（16）を構成し、 上記アクションスイッチ（16）の固定片（24）の延出端
部（26）の対接位置に、上記付勢バネ（29）の支点部
（31）の位置を外部から調整する調整ネジ（38）を配設
した 圧力スイッチ。1. A pressure receiving element that expands and contracts in response to a change in fluid pressure, and a plunger that moves forward and backward in conjunction with the pressure receiving element.
A pressure switch equipped with an action switch that opens and closes the contact portions in conjunction with the forward / backward movement of the plunger, comprising a fixed piece (24) and a fixed tongue piece (27) having a fixed contact (34). The fixed piece (24) and the fixed tongue piece (27) are arranged opposite to each other with a predetermined gap therebetween.
Of the movable piece (28) formed in an annular shape by an elastic member on the stationary side of the fixed piece (24). Lock one end and set the other end of the movable piece (28) to the movable contact (35),
The movable contact (35) is replaced with the fixed contact (3) of the fixed tongue (27).
4) Corresponding to the above, the urging spring (29) is attached to the movable contact (35) side of the movable piece (28).
The movable end (32) side at one end is locked, and the fulcrum portion (31) at the other end of the biasing spring (29) is fixed to the fixed piece (2
The action switch (16) is configured by being locked to the extension end (26) of 4), and the contact position of the extension end (26) of the fixed piece (24) of the action switch (16). A pressure switch in which an adjusting screw (38) for externally adjusting the position of the fulcrum portion (31) of the biasing spring (29) is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61033656A JP2503957B2 (en) | 1986-02-17 | 1986-02-17 | Pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61033656A JP2503957B2 (en) | 1986-02-17 | 1986-02-17 | Pressure switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62190626A JPS62190626A (en) | 1987-08-20 |
| JP2503957B2 true JP2503957B2 (en) | 1996-06-05 |
Family
ID=12392487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61033656A Expired - Lifetime JP2503957B2 (en) | 1986-02-17 | 1986-02-17 | Pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2503957B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7076218B2 (en) | 2017-02-07 | 2022-05-27 | セイコーインスツル株式会社 | Time measurement system, program of the first communication device, and program of the second communication device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6019312U (en) * | 1983-07-19 | 1985-02-09 | 株式会社クボタ | Agricultural tractor hydraulic system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6328845Y2 (en) * | 1981-04-09 | 1988-08-03 |
-
1986
- 1986-02-17 JP JP61033656A patent/JP2503957B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6019312U (en) * | 1983-07-19 | 1985-02-09 | 株式会社クボタ | Agricultural tractor hydraulic system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7076218B2 (en) | 2017-02-07 | 2022-05-27 | セイコーインスツル株式会社 | Time measurement system, program of the first communication device, and program of the second communication device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62190626A (en) | 1987-08-20 |
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