JPS61147421A - Pressure switch - Google Patents
Pressure switchInfo
- Publication number
- JPS61147421A JPS61147421A JP26818584A JP26818584A JPS61147421A JP S61147421 A JPS61147421 A JP S61147421A JP 26818584 A JP26818584 A JP 26818584A JP 26818584 A JP26818584 A JP 26818584A JP S61147421 A JPS61147421 A JP S61147421A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- receiving member
- flow path
- conductor
- attached
- 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
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、流体の圧力を検知する圧カスイソチに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a pressure gauge for detecting fluid pressure.
〈従来の技術〉
従来の圧力スイッチは、第２図に示すように流路１０を
形成したハウジング１１に被取付部材１２をねじ込み固
定し、この被取付部材１２に形成された流路１０と連通
する嵌合孔１３にスプール１４を摺動可能に嵌挿し、嵌
合孔１３と連続して形成された段付穴１５に導電性の接
点部材１６を保持した絶縁部材１７を嵌合させ、段付穴
１５の開口部に絶縁部材１７の抜は防止のためにプラグ
１８を蝮着し、スプール１４と絶縁部材１７間にスプリ
ング１９を介挿していた。<Prior Art> As shown in FIG. 2, a conventional pressure switch has a mounting member 12 screwed and fixed to a housing 11 in which a flow path 10 is formed, and communicates with the flow path 10 formed in the mounting member 12. The spool 14 is slidably fitted into the fitting hole 13, and the insulating member 17 holding the conductive contact member 16 is fitted into the stepped hole 15 formed continuously with the fitting hole 13. A plug 18 was attached to the opening of the attached hole 15 to prevent the insulating member 17 from being removed, and a spring 19 was inserted between the spool 14 and the insulating member 17.
かかる圧力スイッチは、流路１０内の流体の圧力が一定
圧以上になると、スプール１４がスプリング１９に打ち
勝って作動し、スプール１４が接点部材１６に接触する
ことにより、接点部材１６、゛スプール１４、ハウジン
グ１１を通る電流の流れが発生する。この電流の流れを
検出器２０で検出することにより流路１０内の流体の圧
力が一定以上になったことを検出していた。In such a pressure switch, when the pressure of the fluid in the flow path 10 exceeds a certain pressure, the spool 14 overcomes the spring 19 and operates, and the spool 14 contacts the contact member 16, so that the contact member 16, the spool 14 , a current flow through the housing 11 occurs. By detecting this current flow with the detector 20, it was detected that the pressure of the fluid in the flow path 10 exceeded a certain level.
〈発明が解決しようとする問題点〉
上述した圧力スイッチは、スプール１４を押圧するスプ
リング１９ならびに接点部材１６と被取付部材１２間を
絶縁する絶縁部材１７を設けなければならないため部品
点数が多くなる問題があり、さらにスプール１４が摺動
できるように嵌合孔１３を長（形成しなければならない
ため装置全体が大型になる問題があった。<Problems to be Solved by the Invention> The pressure switch described above requires a large number of parts because it is necessary to provide a spring 19 that presses the spool 14 and an insulating member 17 that insulates between the contact member 16 and the attached member 12. In addition, the fitting hole 13 must be made long so that the spool 14 can slide therein, resulting in an increase in the size of the entire device.
く問題点を解決するための手段〉
本発明は上述した問題を解決するためになされたもので
、被取付部材に形成した通路に一端が流体の圧力を受圧
する受圧部材を嵌合させるとともにこの受圧部材によっ
て圧縮されたときのみ電流が流れる圧力導電体を嵌合さ
せ、前記被取付部材に圧力導電体の受圧部材と反対方向
の移動を拘束する係止部材を設け、前記圧力導電体に電
流が流れたことを検出する検出手段を設けたものである
。Means for Solving the Problems> The present invention has been made to solve the above-mentioned problems, and includes fitting a pressure-receiving member, one end of which receives fluid pressure, into a passage formed in a member to be attached. A pressure conductor through which current flows only when compressed by the pressure receiving member is fitted, a locking member is provided on the attached member to restrain movement of the pressure conductor in a direction opposite to the pressure receiving member, and a current flows through the pressure conductor. The system is equipped with a detection means for detecting the flow of water.
〈実施例〉 以下本発明の実施例を図面に基づいて説明する。<Example> Embodiments of the present invention will be described below based on the drawings.
第１図において３０はハウジングであり、このハウジン
グ３０には流路３１が形成されている。この流路３１の
一方はポンプ４０に接続され、他方は作動装置４１に接
続されている。前記ハウジング３０には流路３１と直角
に連通ずるねじ穴３２が形成され、このねじ穴３２に被
取付部材３３が螺着されている。被取付部材３３には流
路３１と直角に連通ずる通路３４が形成されており、こ
の通路３４は流路３１と直接連通する小径の圧力導入孔
３５と、圧力導入孔３５と連続して大径の段付穴３６と
、段付穴３６と連続して通路３４の一端に開口するねじ
穴３７とからなっている。圧力導入孔３５と段付穴３６
間には段部３８が形成されており、この段部３８と当接
するように段付穴３６に導電性の受圧部材５０が嵌合さ
れ、さらに圧力導電ゴム（圧力導電体）５１が嵌合され
ている。圧力導電ゴムの受圧部材５０と反対方向の抜け
を防止すべく前記ねし穴３７にプラグ（係止部材）５２
が螺合されている。前記圧力導電ゴム５１は一般にシリ
コンゴム内に導電材料を分散させたものであり、圧力を
加えた時のみ電流が流れる性質を有している。圧力導電
ゴム５１のプラグ５２側の一端にはコード５３の一端が
接続され、このコード５３はプラグ５２に形成された貫
通穴５４を介して外部へ導きだされている。コード５３
の他端は、圧力導電ゴム５１に電流が流れたことを検出
する検出器（検出手段）５５に接続され、検出器５５は
バッテリ５６に接続されている。ハウジング３０にはア
ースが接続されている。In FIG. 1, 30 is a housing, and this housing 30 has a flow path 31 formed therein. One side of this flow path 31 is connected to a pump 40 and the other side is connected to an actuating device 41. A threaded hole 32 is formed in the housing 30 and communicates with the flow path 31 at right angles, and an attached member 33 is screwed into this threaded hole 32. A passage 34 is formed in the mounting member 33 and communicates with the flow passage 31 at right angles. It consists of a stepped hole 36 with a diameter and a screw hole 37 that is continuous with the stepped hole 36 and opens at one end of the passage 34. Pressure introduction hole 35 and stepped hole 36
A step 38 is formed between the two, and a conductive pressure receiving member 50 is fitted into the stepped hole 36 so as to be in contact with the step 38, and a pressure conductive rubber (pressure conductor) 51 is further fitted. has been done. A plug (locking member) 52 is installed in the screw hole 37 to prevent the pressure conductive rubber from coming off in the opposite direction to the pressure receiving member 50.
are screwed together. The pressure conductive rubber 51 is generally silicone rubber in which a conductive material is dispersed, and has the property that current flows only when pressure is applied. One end of a cord 53 is connected to one end of the pressure conductive rubber 51 on the plug 52 side, and the cord 53 is led out through a through hole 54 formed in the plug 52. code 53
The other end is connected to a detector (detection means) 55 that detects that current has flowed through the pressure conductive rubber 51, and the detector 55 is connected to a battery 56. The housing 30 is connected to ground.
次に上述した構成に基づいて作用について説明する。ポ
ンプ４０から吐出された油は、流路３１を経て作動装置
４１に導かれる。作動装置４１の負荷が増大すると、流
路３１内の油の圧力が上昇し、この上昇した油の圧力が
圧力導入孔３５を経て受圧部材５０の圧力導入孔３５例
の一端に作用する。これによって受圧部材５０はプラグ
５２側に押圧され、圧力導電ゴム５１は受圧部材５ｏと
プラグ５２とで挟圧される。圧力導電ゴム５１を圧縮す
る力がある圧力以上になると圧力導電ゴム５１の性質が
導電性に変化し、バッテリ５６がらの電流がコード５３
、圧力導電ゴム５１、受圧部材５０を経てハウジング３
０に流れ、電流が流れたことを検出器５５によって検出
される。この結果、流路３１内の油の圧力がある圧力以
上なったことが検出される。Next, the operation will be explained based on the above-described configuration. Oil discharged from the pump 40 is guided to the actuating device 41 through the flow path 31. When the load on the actuating device 41 increases, the oil pressure within the flow path 31 increases, and this increased oil pressure acts on one end of the pressure introduction holes 35 of the pressure receiving member 50 via the pressure introduction hole 35. As a result, the pressure receiving member 50 is pressed toward the plug 52, and the pressure conductive rubber 51 is pressed between the pressure receiving member 5o and the plug 52. When the pressure that compresses the pressure conductive rubber 51 exceeds a certain pressure, the properties of the pressure conductive rubber 51 change to conductivity, and the current from the battery 56 is transferred to the cord 53.
, the pressure conductive rubber 51 and the pressure receiving member 50 to the housing 3
0, and the detector 55 detects that the current has flowed. As a result, it is detected that the pressure of the oil in the flow path 31 has exceeded a certain pressure.
〈発明の効果〉
以上述べたように本発明は、受圧部材に作用した油の圧
力によって圧力導電ゴムを受圧部材と係止部材とで圧縮
する・ようにした構成であるので、部品点数の少ないシ
ンプルな構成となり、装置全体を小型にできる利点が得
られる。<Effects of the Invention> As described above, the present invention has a configuration in which the pressure conductive rubber is compressed between the pressure receiving member and the locking member by the pressure of oil acting on the pressure receiving member, so the number of parts is small. It has a simple configuration and has the advantage of being able to downsize the entire device.
第１図は本発明にかかる圧カスイソチの断面図、第２図
は従来の圧力スイフチの断面図。
３０・・・ハウジング、３１・・・流路、３２・・・ね
じ穴、３４・・・通路、５０・・・受圧部材、５１・・
・圧力導電ゴム、５２・・・プラグ、５５・・・検出器
、５６・・・バッテリ。FIG. 1 is a sectional view of a pressure switch according to the present invention, and FIG. 2 is a sectional view of a conventional pressure switch. 30... Housing, 31... Channel, 32... Screw hole, 34... Passage, 50... Pressure receiving member, 51...
・Pressure conductive rubber, 52...Plug, 55...Detector, 56...Battery.
Claims (2)
する圧力スイッチであって、前記ハウジングに被取付部
材を固着し、この被取付部材に前記流路と連通する通路
を形成し、この通路に一端が流体の圧力を受圧する受圧
部材を嵌合させるとともにこの受圧部材によって圧縮さ
れたときのみ電流が流れる圧力導電体を嵌合させ、前記
被取付部材に圧力導電体の受圧部材と反対方向の移動を
拘束する係止部材を設け、前記圧力導電体に電流が流れ
たことを検出する検出手段を設けてなる圧力スイッチ。(1) A pressure switch that detects the pressure of fluid in a flow path formed in a housing, in which a member to be attached is fixed to the housing, a passage communicating with the flow path is formed in the member to be attached, and A pressure receiving member whose one end receives fluid pressure is fitted into the passage, and a pressure conductor through which current flows only when compressed by this pressure receiving member is fitted, and the attached member is opposite to the pressure receiving member of the pressure conductor. A pressure switch comprising a locking member for restraining movement in a direction, and a detection means for detecting that a current flows through the pressure conductor.
の範囲第１項記載の圧力スイッチ。(2) The pressure switch according to claim 1, wherein the pressure conductor is a pressure conductive rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26818584A JPS61147421A (en) | 1984-12-18 | 1984-12-18 | Pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26818584A JPS61147421A (en) | 1984-12-18 | 1984-12-18 | Pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61147421A true JPS61147421A (en) | 1986-07-05 |
Family
ID=17455095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26818584A Pending JPS61147421A (en) | 1984-12-18 | 1984-12-18 | Pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61147421A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460206A (en) * | 1987-08-28 | 1989-03-07 | Hitachi Ltd | Service interruption detecting controller for ac electric rolling stock |
| JPH06281555A (en) * | 1993-03-29 | 1994-10-07 | Tsutsunaka Plast Ind Co Ltd | Method and apparatus for measuring pressure resistance of thermoplastic tube during heating |
-
1984
- 1984-12-18 JP JP26818584A patent/JPS61147421A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460206A (en) * | 1987-08-28 | 1989-03-07 | Hitachi Ltd | Service interruption detecting controller for ac electric rolling stock |
| JPH06281555A (en) * | 1993-03-29 | 1994-10-07 | Tsutsunaka Plast Ind Co Ltd | Method and apparatus for measuring pressure resistance of thermoplastic tube during heating |
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