JPH0350375B2 - - Google Patents
Info
- Publication number
- JPH0350375B2 JPH0350375B2 JP59129089A JP12908984A JPH0350375B2 JP H0350375 B2 JPH0350375 B2 JP H0350375B2 JP 59129089 A JP59129089 A JP 59129089A JP 12908984 A JP12908984 A JP 12908984A JP H0350375 B2 JPH0350375 B2 JP H0350375B2
- Authority
- JP
- Japan
- Prior art keywords
- movable contact
- switch
- pressure side
- pressure
- plate
- 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
- 239000012530 fluid Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、カークーラー等における高圧保安用
兼ガス漏れ検知用として用いられる高低圧スイツ
チに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a high/low pressure switch used for high pressure safety and gas leak detection in car coolers and the like.
圧力応動部材の低圧作動領域において低圧スイ
ツチを動作させ、高圧作動領域において高圧スイ
ツチを動作させる態様では二個のスイツチを必要
とするので、接点板にスナツプアクシヨン機構を
設けた一個のスイツチで兼用させるようにしてい
る。
In an embodiment in which the low pressure switch is operated in the low pressure operating range of the pressure responsive member and the high pressure switch is operated in the high pressure operating range, two switches are required, so a single switch with a snap action mechanism provided on the contact plate is used. I am trying to have it used for both purposes.
上記の従来技術にあつては、相互に接離する二
個の弾性接点板における接点の位置が一定でな
く、相対向する可動接点の作動位置の設定にばら
つきがあつて不安定要素となつていた。
In the above-mentioned conventional technology, the positions of the contacts on the two elastic contact plates that come into contact with and separate from each other are not constant, and the setting of the operating positions of the movable contacts that face each other varies, which causes instability. Ta.
本発明は上記した点に着目してなされたもので
あり、二個の弾性接点板における一方の作動開始
位置を確実に設定することにより安定した動作を
得ることを意図するものである。 The present invention has been made with attention to the above points, and is intended to obtain stable operation by reliably setting the operation start position of one of the two elastic contact plates.
上記の目的を達成するため、本発明において
は、スイツチ本体内にスイツチ駆動体を一定距離
移動可能に設けると共にスプリングにより圧力導
入口方向に付勢して設け、該スイツチ駆動体にお
いてその端面にシールダイヤフラムにより被覆さ
れた状態で圧力反転板を設けると共に該圧力反転
板により駆動されるスイツチ駆動杆を設け、更に
スイツチ本体に相互に相対向して接離する接点を
有する低圧側弾性可動接点板と高圧側弾性可動接
点板を設け、該高圧側弾性可動接点板を該低圧側
弾性可動接点板方向への弾力に抗して支持して高
圧側可動接点を一定位置に保持する高圧側弾性可
動接点板の作動開始位置設定部材を設け、圧力上
昇時において先づ該スイツチ駆動体により該低圧
側弾性可動接点板を移動させて低圧側可動接点を
該高圧側可動接点に接触させることによりスイツ
チを閉じ、更に圧力が上昇すると該圧力反転板が
反転して該スイツチ駆動杆により該高圧側弾性可
動接点板を前記弾力に抗して移動させて該高圧側
可動接点を該低圧側可動接点と離隔させることに
よりスイツチを開くことを特徴とする。
In order to achieve the above object, in the present invention, a switch driving body is provided within the switch body so as to be movable over a certain distance and is biased toward the pressure introduction port by a spring, and a seal is attached to the end face of the switch driving body. A pressure reversing plate is provided in a state covered by a diaphragm, a switch drive rod is provided which is driven by the pressure reversing plate, and a low-pressure side elastic movable contact plate having contacts facing each other and moving towards and away from the switch body is provided. A high voltage side elastic movable contact in which a high voltage side elastic movable contact plate is provided, and the high voltage side elastic movable contact plate is supported against elasticity in the direction of the low pressure side elastic movable contact plate to hold the high voltage side movable contact at a fixed position. A plate operation start position setting member is provided, and when the pressure increases, the switch driver first moves the low pressure side elastic movable contact plate and brings the low pressure side movable contact into contact with the high pressure side movable contact to close the switch. When the pressure further increases, the pressure reversing plate is reversed, and the switch driving rod moves the high pressure side elastic movable contact plate against the elastic force, thereby separating the high pressure side movable contact from the low pressure side movable contact. It is characterized by opening a switch.
以下本発明の一実施例について図面と共に説明
すれば、Ａはスイツチ本体であり、一側に流体導
入孔B1を有する継手Ｂが固着され、その他側に
はスイツチ部Ｓと共にカバーＣが設けられる。
An embodiment of the present invention will be described below with reference to the drawings. A is a switch body, a joint B having a fluid introduction hole B1 is fixed to one side, and a cover C is provided together with a switch part S on the other side. .
スイツチ本体Ａの端部と継手間にはポリイミド
等のプラスチツク製ダイヤフラム１の周縁部と共
にゴム製のシールリング２が挾着される。 A seal ring 2 made of rubber is clamped between the end of the switch body A and the joint together with the peripheral edge of a diaphragm 1 made of plastic such as polyimide.
スイツチ本体Ａ内にはスイツチ駆動体３が摺動
可能に設けられ、その端部の凹部３ａ内には３枚
重ねの圧力反転板４が流体導入孔B1方向に膨出
して内部に反転許容空間を存した状態で設けられ
るもので、上記ダイヤフラム１はスイツチ駆動体
３の周縁部から圧力反転板４にわたつて全面的に
設けられている。スイツチ本体Ａ内には上記スイ
ツチ駆動体３に対向してスプリング受部５が設け
られ、両者間には圧縮スプリング６が設けられ
る。 A switch driving body 3 is slidably provided inside the switch body A, and a three-layer pressure reversing plate 4 bulges out in one direction of the fluid introduction hole B in a recess 3a at the end thereof to allow reversal inside. The diaphragm 1 is provided with a space, and the diaphragm 1 is provided entirely from the peripheral edge of the switch drive body 3 to the pressure reversal plate 4. A spring receiving portion 5 is provided within the switch body A facing the switch driving member 3, and a compression spring 6 is provided between the two.
非作動乃至低圧状態において、スイツチ駆動体
３の圧力反転板４が継手Ｂの内面に当接してスイ
ツチ駆動体３とスイツチ本体Ａの段部A1間にス
イツチ駆動体３の移動許容間隙ｌが形成される。 In the non-operating or low pressure state, the pressure reversing plate 4 of the switch drive body 3 comes into contact with the inner surface of the joint B, and a movement allowable gap l of the switch drive body 3 is created between the switch drive body 3 and the stepped portion A1 of the switch body A. It is formed.
スイツチ駆動体３にはスイツチＳの低圧側弾性
可動接点板７に対する駆動杆部３ｂにかけて軸方
向に貫通孔３ｃが形成され、該貫通孔３ｃにおい
てスイツチＳの高圧側弾性可動接点板８に対する
駆動杆３′が圧力反転板４の内面に接触した状態
で設けられている。 A through hole 3c is formed in the switch driving body 3 in the axial direction extending to the drive rod portion 3b for the low pressure side elastic movable contact plate 7 of the switch S, and in the through hole 3c, the drive rod for the high pressure side elastic movable contact plate 8 of the switch S is formed. 3' is provided in contact with the inner surface of the pressure reversal plate 4.
低圧側弾性可動接点板７の自由端には低圧側可
動接点７ａが設けられ、基端は端子板７′に接続
される。また、高圧側弾性可動接点板８の自由端
には高圧側可動接点８ａが設けられ、基端は端子
板８′に接続される。高圧側弾性可動接点板８は
その作動開始位置設定部材９に接離する。 A low voltage side movable contact 7a is provided at the free end of the low voltage side elastic movable contact plate 7, and the base end is connected to a terminal plate 7'. Further, a high voltage side movable contact 8a is provided at the free end of the high voltage side elastic movable contact plate 8, and the base end is connected to a terminal plate 8'. The high voltage side elastic movable contact plate 8 comes into contact with and separates from its operation start position setting member 9.
上記構成において、第１図の非作動乃至低圧状
態においては、圧力反転板４は継手Ｂの内面に当
接してスイツチ駆動体３の駆動杆部３ｂは非駆動
位置にあり、スイツチＳの低圧側弾性可動設定板
７がスイツチ駆動体３方向に対する弾性により該
駆動杆部３ｂに当接し、高圧側弾性可動接点板８
は同方向に対する弾性に抗して端子板に連設した
作動開始位置設定部材９により保持されることに
より、両者の可動接点７ａ，８ａが離隔してい
る。 In the above configuration, in the non-operating or low-pressure state shown in FIG. The elastic movable setting plate 7 contacts the drive rod portion 3b due to its elasticity in the direction of the switch drive body 3, and the high voltage side elastic movable contact plate 8
are held by an actuation start position setting member 9 connected to the terminal plate against elasticity in the same direction, so that the movable contacts 7a and 8a are separated from each other.
この状態から圧力が上昇してダイヤフラム１の
発生力がスプリング６の張力を越えると該スプリ
ング６を圧縮しつつスイツチ駆動体３が上昇し、
駆動杆部３ｂが低圧側弾性可動接点板７を駆動し
て低圧側可動接点７ａを高圧側弾性可動接点板８
の高圧側可動接点８ａに当接させることによりス
イツチＳを閉じて正常運転状態となり（第２図）、
この状態においてはスイツチ駆動体３が段部A1
に当接し、高圧側弾性可動接点板８はその作動開
始位置設定部材９から離れている。 When the pressure rises from this state and the force generated by the diaphragm 1 exceeds the tension of the spring 6, the switch driving body 3 moves up while compressing the spring 6.
The drive rod portion 3b drives the low pressure side elastic movable contact plate 7 to connect the low pressure side movable contact 7a to the high pressure side elastic movable contact plate 8.
By contacting the high pressure side movable contact 8a of the switch S, the switch S is closed and the normal operating state is established (Fig. 2).
In this state, the switch driving body 3 is connected to the stepped portion A 1
The high voltage side elastic movable contact plate 8 is separated from the operation start position setting member 9.
次に、この状態から更に圧力が上昇すると、ス
イツチ駆動体３が停止したままで圧力反転板４が
反転し、この際に圧力反転板４が駆動杆３′を押
し上げることにより高圧側弾性可動接点板８を駆
動して高圧側可動接点８ａを低圧側可動接点７ａ
から離隔してスイツチＳを開く。またスイツチＳ
を閉じた状態においてガス漏れ等により圧力が低
下した場合もスイツチＳを開いて異常を知らせ
る。 Next, when the pressure rises further from this state, the pressure reversing plate 4 reverses while the switch driving body 3 remains stopped, and at this time, the pressure reversing plate 4 pushes up the drive rod 3', causing the high pressure side elastic movable contact to Drive the plate 8 to change the high pressure side movable contact 8a to the low pressure side movable contact 7a.
Move away from the camera and open switch S. Also switch S
Even if the pressure drops due to gas leakage etc. when the switch is closed, the switch S will be opened to notify the abnormality.
本発明は上記した如くに、スイツチ本体内にス
イツチ駆動体を一定距離移動可能に設けると共に
スプリングにより圧力導入口方向に付勢して設
け、該スイツチ駆動体においてその端面にシール
ダイヤフラムにより被覆された状態で圧力反転板
を設けると共に該圧力反転板により駆動されるス
イツチ駆動杆を設け、更にスイツチ本体に相互に
相対向して接離する接点を有する低圧側弾性可動
接点板と高圧側弾性可動接点板を設け、該高圧側
弾性可動接点板を該低圧側弾性可動接点板方向へ
の弾力に抗して支持して高圧側可動接点を一定位
置に保持する高圧側弾性可動設定板の作動開始位
置設定部材を設け、圧力上昇時において先づ該ス
イツチ駆動体により該低圧側弾性可動接点板を移
動させて低圧側可動接点を該高圧側可動接点に接
触させることによりスイツチを閉じ、更に圧力が
上昇すると該圧力反転板が反転して該スイツチ駆
動杆により該高圧側弾性可動接点板を前記弾力に
抗して移動させて該高圧側可動接点を該低圧側可
動接点と離隔させることによりスイツチを開くよ
うにして成るものであるから、高圧側弾性可動接
点板にその弾性による初期荷重を具備させた状態
で該高圧側弾性可動接点板をその作動開始位置設
定部材により一定位置に保持し、これによつて接
点の開閉位置を安定させることができると共に正
常圧力時のスイツチを閉じた状態（第２図）にお
いて安定した接点圧を得ることができ、更には、
振動、衝撃によるスイツチのチヤタリングを確実
に防止し得ることができ、特性が安定し、接点の
寿命が保証された均質製品を提供することができ
る。
As described above, the present invention provides a switch driving body that is movable over a certain distance within a switch body and is biased toward the pressure introduction port by a spring, and the end face of the switch driving body is covered with a seal diaphragm. A pressure reversal plate is provided in the state, and a switch drive rod is provided which is driven by the pressure reversal plate, and a low pressure side elastic movable contact plate and a high pressure side elastic movable contact plate are provided with contacts that face each other and move toward and away from the switch body. an operation start position of a high-voltage side elastic movable setting plate which is provided with a plate and supports the high-voltage side elastic movable contact plate against elasticity in the direction of the low-voltage side elastic movable contact plate to hold the high-voltage side movable contact at a constant position; A setting member is provided, and when the pressure increases, the low pressure side elastic movable contact plate is first moved by the switch driver to bring the low pressure side movable contact into contact with the high pressure side movable contact to close the switch, and the pressure increases further. Then, the pressure reversal plate is reversed, and the switch drive rod moves the high pressure side elastic movable contact plate against the elastic force to separate the high pressure side movable contact from the low pressure side movable contact, thereby opening the switch. Since the high voltage side elastic movable contact plate is provided with an initial load due to its elasticity, the high voltage side elastic movable contact plate is held at a constant position by its operation start position setting member, and then Therefore, the opening and closing positions of the contacts can be stabilized, and stable contact pressure can be obtained in the closed state of the switch at normal pressure (Fig. 2), and furthermore,
It is possible to reliably prevent the switch from chattering due to vibrations and shocks, and to provide a homogeneous product with stable characteristics and guaranteed contact life.
第１図は本発明の一実施例について非作動乃至
異常低圧時の断面図、第２図は正常圧力時のスイ
ツチが閉じた状態の断面図、第３図は異常高圧時
の断面図である。
Ａ……スイツチ本体、Ｓ……スイツチ、１……
シールダイヤフラム、３……スイツチ駆動体、
３′……スイツチ駆動杆、４……圧力反転板、７
……低圧側弾性可動接点板、７ａ……低圧側可動
接点、８……高圧側弾性可動接点板、８ａ……高
圧側可動接点、９……高圧側弾性可動接点板の作
動開始位置設定部材。
Fig. 1 is a sectional view of an embodiment of the present invention when the switch is not in operation or at abnormally low pressure, Fig. 2 is a sectional view when the switch is closed at normal pressure, and Fig. 3 is a sectional view when the pressure is abnormally high. . A...Switch body, S...Switch, 1...
Seal diaphragm, 3... switch drive body,
3'...Switch drive rod, 4...Pressure reversal plate, 7
...low pressure side elastic movable contact plate, 7a...low pressure side movable contact, 8...high pressure side elastic movable contact plate, 8a...high pressure side movable contact, 9...operation start position setting member of high pressure side elastic movable contact plate .
Claims (1)
移動可能に設けると共にスプリングにより圧力導
入口方向に付勢して設け、該スイツチ駆動体にお
いてその端面にシールダイヤフラムにより被覆さ
れた状態で圧力反転板を設けると共に該圧力反転
板により駆動されるスイツチ駆動杆を設け、更に
スイツチ本体に相互に相対向して接離する接点を
有する低圧側弾性可動接点板と高圧側弾性可動接
点板を設け、該高圧側弾性可動接点板を該低圧側
弾性可動接点板方向への弾力に抗して支持して高
圧側可動接点を一定位置に保持する高圧側弾性可
動接点板の作動開始位置設定部材を設け、圧力上
昇時において先づ該スイツチ駆動体により該低圧
側弾性可動接点板を移動させて低圧側可動接点を
該高圧側可動接点に接触させることによりスイツ
チを閉じ、更に圧力が上昇すると該圧力反転板が
反転して該スイツチ駆動杆により該高圧側弾性可
動接点板を前記弾力に抗して移動させて該高圧側
可動接点を該低圧側可動接点と離隔させることに
よりスイツチを開くことを特徴とする高低圧スイ
ツチ。1. A switch driving body is provided within the switch body so as to be movable over a certain distance and is biased toward the pressure introduction port by a spring, and a pressure reversal plate is provided on the end face of the switch driving body in a state covered with a seal diaphragm. and a switch drive rod driven by the pressure reversal plate, and further provided with a low pressure side elastic movable contact plate and a high pressure side elastic movable contact plate having contacts that move toward and away from each other on the switch body, and the high pressure side A high pressure side elastic movable contact plate actuation start position setting member is provided to support the elastic movable contact plate against the elastic force in the direction of the low pressure side elastic movable contact plate and hold the high pressure side movable contact at a constant position, thereby increasing the pressure. At this time, the switch is closed by first moving the low-pressure side elastic movable contact plate by the switch driving body and bringing the low-pressure side movable contact into contact with the high-pressure side movable contact, and when the pressure further increases, the pressure reversal plate is reversed. The high-low pressure switch is opened by moving the high-pressure side elastic movable contact plate against the elastic force using the switch drive rod to separate the high-pressure side movable contact from the low-pressure side movable contact. Switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12908984A JPS618822A (en) | 1984-06-25 | 1984-06-25 | Low pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12908984A JPS618822A (en) | 1984-06-25 | 1984-06-25 | Low pressure switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS618822A JPS618822A (en) | 1986-01-16 |
| JPH0350375B2 true JPH0350375B2 (en) | 1991-08-01 |
Family
ID=15000801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12908984A Granted JPS618822A (en) | 1984-06-25 | 1984-06-25 | Low pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS618822A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007033080A (en) * | 2005-07-22 | 2007-02-08 | Noritz Corp | Water stream sensor and hot-water supply system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5982935U (en) * | 1982-11-26 | 1984-06-05 | 株式会社テージーケー | 2-action pressure switch |
-
1984
- 1984-06-25 JP JP12908984A patent/JPS618822A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS618822A (en) | 1986-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |