JPH0945192A - Micro pressure switch - Google Patents
Micro pressure switchInfo
- Publication number
- JPH0945192A JPH0945192A JP19541595A JP19541595A JPH0945192A JP H0945192 A JPH0945192 A JP H0945192A JP 19541595 A JP19541595 A JP 19541595A JP 19541595 A JP19541595 A JP 19541595A JP H0945192 A JPH0945192 A JP H0945192A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- contact
- plate
- pressure receiving
- receiving 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.)
- Withdrawn
Links
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 8
- 238000012856 packing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
(57)【要約】
【課題】 作動圧力の調整が容易で量産可能な微圧スイ
ッチを提供すること。
【解決手段】 流体の圧力変化に対応して変形するダイ
ヤフラム４と、ダイヤフラム４の両側面に当接する受圧
板５、６と、受圧板５、６に圧接して受圧板５、６の変
位に追従する作動軸１９と、作動軸１９の移動によって
接離する接点１４、１５と、受圧板６に当接し、受圧板
６を作動軸１９側に付勢する第１圧縮バネ７と、第１圧
縮バネ７の受圧板６に当接する端部の反対側の端部に当
接する調整板８と、調整板８に当接し、調整板８の変位
を調整する調整ビス１０と、調整板８を受圧板６側に付
勢する第２圧縮バネ９で構成される。
(57) [Abstract] [PROBLEMS] To provide a micro pressure switch that allows easy adjustment of working pressure and can be mass-produced. SOLUTION: A diaphragm 4 that deforms in response to a change in fluid pressure, pressure receiving plates 5 and 6 contacting both side surfaces of the diaphragm 4, and pressure displacement of the pressure receiving plates 5 and 6 by pressure contact with the pressure receiving plates 5 and 6. The operating shaft 19 that follows, the contacts 14 and 15 that come into contact with and separate from each other by the movement of the operating shaft 19, the first compression spring 7 that abuts the pressure receiving plate 6 and biases the pressure receiving plate 6 toward the operating shaft 19, and The adjusting plate 8 is in contact with the end of the compression spring 7 opposite to the end in contact with the pressure receiving plate 6, the adjusting screw 10 is in contact with the adjusting plate 8 and adjusts the displacement of the adjusting plate 8, and the adjusting plate 8 is provided. The second compression spring 9 is configured to urge the pressure receiving plate 6 side.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、流体の圧力変化を
検知することにより、ガス給湯器の排気管の詰まり等を
検知するための、高感度を必要とする微圧スイッチに関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a micro pressure switch that requires high sensitivity for detecting clogging of an exhaust pipe of a gas water heater by detecting a change in fluid pressure.
【０００２】[0002]
【従来の技術】図２は、従来使用されている微圧スイッ
チであって、実公昭５７−４９８９４号に開示されてい
るものである。2. Description of the Related Art FIG. 2 shows a conventional micro pressure switch which is disclosed in Japanese Utility Model Publication No. 57-49894.
【０００３】この微圧スイッチでは、上ケースＣ1と下
ケースＣ2からなるスイッチ本体Ｃの両ケースＣ1、Ｃ2
間に両者を区画するダイヤフラム１０４が挟持され、上
ケースＣ1内には、ダイヤフラム１０４の中心部上面と
ケース内壁との間にリードスイッチ１０２の管体が収容
されている。このリードスイッチ１０２は、端子１１
１、１１２により上壁を貫通し、制御回路に接続されて
いる。[0003] In this fine pressure switch, both the cases of the switch body C formed of upper case C 1 and the lower case C 2 C 1, C 2
A diaphragm 104 for partitioning the two is sandwiched between them, and the tubular body of the reed switch 102 is housed in the upper case C 1 between the upper surface of the central portion of the diaphragm 104 and the inner wall of the case. This reed switch 102 has a terminal 11
1, 112 penetrates the upper wall and is connected to the control circuit.
【０００４】リードスイッチ１０２の上方の上ケースＣ
1の上壁内に正磁極の固定マグネット片１０１が埋め込
まれる。また、上ケースＣ1内には圧力測定部Ａの圧力
ＰAを導入する継手管１１０が開口している。Upper case C above the reed switch 102
A fixed magnet piece 101 having a positive magnetic pole is embedded in the upper wall of 1 . Further, a joint pipe 110 for introducing the pressure P A of the pressure measuring portion A is opened in the upper case C 1 .
【０００５】下ケースＣ2内には、ダイヤフラム１０４
の下面に当接する磁性体の受圧板１０９が設けられ、こ
の受圧板１０９の下面には上記固定マグネット片の逆磁
極の可動マグネット片１０３が固着される。受圧板１０
９は調節バネ１０５と、弾性のある調整板１０６とで支
持され、調整板１０６を上下に変位してバネ１０５の弾
性力を調整する調整ビス１０７が設けられている。さら
に、下ケースＣ2内には圧力測定部Ｂの圧力ＰBを導入す
る継手管１０８が開口している。A diaphragm 104 is provided in the lower case C 2 .
A pressure receiving plate 109 made of a magnetic material is provided so as to abut on the lower surface of the pressure receiving plate 109. Pressure plate 10
9 is supported by an adjusting spring 105 and an elastic adjusting plate 106, and is provided with an adjusting screw 107 for vertically adjusting the adjusting plate 106 to adjust the elastic force of the spring 105. Further, a joint pipe 108 for introducing the pressure P B of the pressure measuring section B is opened in the lower case C 2 .
【０００６】上記構成により、上ケースＣ1内の圧力ＰA
と下ケースＣ2内の圧力ＰBが等しいときは、ダイヤフラ
ム１０４はバネ１０５の弾性力により受圧板１０９を介
して上方へ押圧され、可動マグネット片１０３がリード
スイッチ１０２に近接し、固定マグネット片１０１の磁
場を消磁し、リードスイッチ１０２の図示しない接点は
開となる。一方、上ケース側の圧力ＰAが下ケース側の
圧力ＰBより高くなるとダイヤフラム１０４がバネ１０
５の弾性力と釣り合うまで移動し、ＰAとＰBの圧力が所
定値に達すると固定マグネット片の磁場が復活し、リー
ドスイッチ１０２の図示しない接点が閉じられる。With the above structure, the pressure P A in the upper case C 1
And the pressure P B in the lower case C 2 are equal, the diaphragm 104 is pressed upward by the elastic force of the spring 105 via the pressure receiving plate 109, the movable magnet piece 103 approaches the reed switch 102, and the fixed magnet piece. The magnetic field of 101 is demagnetized, and the contact (not shown) of the reed switch 102 is opened. On the other hand, when the pressure P A on the upper case side becomes higher than the pressure P B on the lower case side, the diaphragm 104 causes the spring 10 to move.
When the pressure of P A and P B reaches a predetermined value, the magnetic field of the fixed magnet piece is restored, and the contact (not shown) of the reed switch 102 is closed.
【０００７】[0007]
【発明が解決しようとする課題】しかし、上記従来の微
圧スイッチにおいては、バネ１０５の弾性力を調節ビス
１０７で調節することによりＰAとＰBの所定圧力差でリ
ードスイッチ１０２をオンさせることができるように構
成されているが、足部１１３と下ケースＣ2の下方内面
Ｃ2’との接触部には摩擦が生ずるため、調整ビス１０
７の回転角度とバネ１０５との間に比例関係は生じなか
った。そのため、外部からのバネ１０５の弾性力の調整
が容易ではなかった。However, in the above-mentioned conventional micro pressure switch, the reed switch 102 is turned on with a predetermined pressure difference between P A and P B by adjusting the elastic force of the spring 105 with the adjusting screw 107. However, since friction occurs at the contact portion between the foot portion 113 and the lower inner surface C 2 'of the lower case C 2 , the adjusting screw 10
There was no proportional relationship between the rotation angle of No. 7 and the spring 105. Therefore, it is not easy to adjust the elastic force of the spring 105 from the outside.
【０００８】そこで、本発明は、上記従来の微圧スイッ
チの問題点に鑑みなされたものであって、作動圧力の調
整が容易で量産可能な微圧スイッチを提供することを目
的とする。Therefore, the present invention has been made in view of the above problems of the conventional micro pressure switch, and an object of the present invention is to provide a micro pressure switch in which the operating pressure can be easily adjusted and mass-produced.
【０００９】[0009]
【課題を解決するための手段】請求項１記載の発明は、
流体の圧力変化に対応して変形するダイヤフラムと、該
ダイヤフラムの両側面に当接する金属薄板からなる受圧
板と、該受圧板に圧接して該受圧板の変位に追従する作
動軸と、該作動軸の移動によって接離する接点とを有す
る微圧スイッチにおいて、前記受圧板に当接し、該受圧
板を前記作動軸側に付勢する第１圧縮バネと、該第１圧
縮バネの前記受圧板に当接する端部の反対側の端部に当
接する調整板と、該調整板に当接し、該調整板の変位を
調整する調整ビスと、前記調整板を前記受圧板側に付勢
する第２圧縮バネを設けたことを特徴とする。According to the first aspect of the present invention,
A diaphragm that deforms in response to a change in fluid pressure, a pressure receiving plate made of a thin metal plate that abuts on both side surfaces of the diaphragm, an operating shaft that presses against the pressure receiving plate and follows displacement of the pressure receiving plate, and the operation. In a micro pressure switch having a contact point that is brought into contact with and separated from by a movement of a shaft, a first compression spring that abuts the pressure receiving plate and urges the pressure receiving plate toward the operating shaft, and the pressure receiving plate of the first compression spring. An adjusting plate that abuts against the end opposite to the end that abuts against the adjusting plate, an adjusting screw that abuts against the adjusting plate and adjusts the displacement of the adjusting plate, and a biasing plate that biases the adjusting plate toward the pressure receiving plate. It is characterized in that two compression springs are provided.
【００１０】請求項１記載の発明によれば、調整ビスの
回転角度と調整板の変位量の間に比例関係が生じるた
め、上記作動値の調整が容易になり、実際に作動値を確
認しながら調整ビスを介して調整板の位置を調整する必
要はなくなる。According to the first aspect of the invention, since a proportional relationship is generated between the rotation angle of the adjusting screw and the displacement amount of the adjusting plate, it becomes easy to adjust the operating value, and the actual operating value can be confirmed. However, it is not necessary to adjust the position of the adjusting plate via the adjusting screw.
【００１１】[0011]
【発明の実施の態様】次に、本発明の実施の態様の具体
例を図面を参照して説明する。図１は、本発明に係る微
圧スイッチの実施例を示す断面図である。この微圧スイ
ッチは、本体カバー１と端子盤２との間に樹脂で形成さ
れたダイヤフラム４が挟持され、微圧スイッチ内を上室
３０と下室４０に区画する。ダイヤフラム４は、その剛
性を高めるため両面から断面コの字状の隆起部を有する
金属製上方受圧板５と下方受圧板６によって挟まれてい
る。なお、ダイヤフラム４と本体カバー１の間には気密
性を保持するためゴムパッキン３が介装される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific examples of embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of a low pressure switch according to the present invention. In this micro pressure switch, a diaphragm 4 made of resin is sandwiched between the main body cover 1 and the terminal board 2, and the inside of the micro pressure switch is divided into an upper chamber 30 and a lower chamber 40. The diaphragm 4 is sandwiched from both sides by a metal upper pressure receiving plate 5 and a lower pressure receiving plate 6 each having a raised portion having a U-shaped cross section from both sides. A rubber packing 3 is interposed between the diaphragm 4 and the body cover 1 to maintain airtightness.
【００１２】上室３０内には、上方受圧板５に当接する
作動軸１９が円板状の端子盤カバー２０の中心部に形成
された穴部２０ａ内に摺動可能に配置され、作動軸１９
の他端は接点板１７に当接している。また、端子盤カバ
ー２０は本体カバー１の内側凸部２ａに固定される。接
点板１７とＵ字形バネ１８によってマイクロスイッチＳ
が構成され、このマイクロスイッチＳによって接点１
４、１５が開閉される。これらの接点１４、１５間の距
離は本体カバー１の上部に設けられた調整ビス１３によ
って調整される。この接点間調整ビス１３はビス固定用
バネ１２によって上方に付勢されている。また、端子盤
２を貫通する端子１６、２１が図示しない制御回路に接
続される。さらに、上室３０に連通する継手管２２が端
子盤２に形成される。In the upper chamber 30, an operating shaft 19 abutting against the upper pressure receiving plate 5 is slidably arranged in a hole 20a formed in the central portion of a disk-shaped terminal board cover 20. 19
The other end of is in contact with the contact plate 17. The terminal board cover 20 is fixed to the inner convex portion 2 a of the main body cover 1. The micro switch S is formed by the contact plate 17 and the U-shaped spring 18.
And the contact 1 is formed by this microswitch S.
4, 15 are opened and closed. The distance between the contacts 14 and 15 is adjusted by an adjusting screw 13 provided on the upper portion of the body cover 1. The inter-contact adjusting screw 13 is biased upward by the screw fixing spring 12. Further, the terminals 16 and 21 penetrating the terminal board 2 are connected to a control circuit (not shown). Further, the joint pipe 22 communicating with the upper chamber 30 is formed in the terminal board 2.
【００１３】下室４０内には、下方受圧板６に当接する
とともに、下方受圧板６を上方に付勢する第１圧縮バネ
７が設けられ、この第１圧縮バネ７の他端には略々断面
コの字状の調整板８が当接している。この調整板８の中
央穴部８ａには、調整ビス１０が上方から挿入され、調
整ビス１０のネジ部は本体カバー１の下部中央に形成さ
れた雌ねじ部１ａと螺合する。また、前記調整板８と本
体カバー１間には、第２圧縮バネ９が配置され、調整板
８及び調整ビス１０を上方に付勢する。調整ビス１０の
下方端部には、外部から調整板８の位置を調整できるよ
うに溝部１０ａが形成されている。さらに、下室４０に
連通する継手管２３が本体カバー１に形成される。Inside the lower chamber 40, there is provided a first compression spring 7 that abuts the lower pressure receiving plate 6 and biases the lower pressure receiving plate 6 upward. The other end of the first compression spring 7 is substantially An adjustment plate 8 having a U-shaped cross section is in contact with each other. The adjusting screw 10 is inserted into the central hole portion 8a of the adjusting plate 8 from above, and the screw portion of the adjusting screw 10 is screwed with the female screw portion 1a formed at the center of the lower portion of the body cover 1. A second compression spring 9 is arranged between the adjusting plate 8 and the main body cover 1 to urge the adjusting plate 8 and the adjusting screw 10 upward. A groove 10a is formed at the lower end of the adjusting screw 10 so that the position of the adjusting plate 8 can be adjusted from the outside. Further, the joint pipe 23 communicating with the lower chamber 40 is formed in the main body cover 1.
【００１４】上記構成を有する微圧スイッチを差圧スイ
ッチとして使用する場合には、継手管２２を低圧側に、
継手管２３を高圧側の管路等に接続する。一方、片方の
継手管を大気に開放し、大気圧より若干高い圧力を検出
する場合には、継手管２２を大気に開放するとともに、
継手管２３を圧力が付加される側の管路等に接続する。When the fine pressure switch having the above structure is used as a differential pressure switch, the joint pipe 22 is placed on the low pressure side.
The joint pipe 23 is connected to a high-pressure side pipe or the like. On the other hand, when one joint pipe is opened to the atmosphere and a pressure slightly higher than atmospheric pressure is detected, the joint pipe 22 is opened to the atmosphere and
The joint pipe 23 is connected to a pipe or the like on the side where pressure is applied.
【００１５】次に、上記構成を有する本発明に係る微圧
スイッチの作動原理について説明する。先ず、無加圧状
態では、接点板１７と第１圧縮バネ７の力が釣り合って
いて、上方受圧板５及び下方受圧板６は静止している
が、上室３０内の圧力より下室４０内の圧力が高くなる
と、上方受圧板５及び下方受圧板６は圧力を受け、作動
軸１９を上方に移動させ、接点板１７を押し上げる。ま
た、接点板１７のたわみがある起点まで達すると、Ｕ字
形バネ１８が反転し、接点１４と接点１５が接触する。Next, the operating principle of the micro-pressure switch according to the present invention having the above structure will be described. First, in the unpressurized state, the forces of the contact plate 17 and the first compression spring 7 are balanced and the upper pressure receiving plate 5 and the lower pressure receiving plate 6 are stationary, but the pressure in the upper chamber 30 is lower than the pressure in the lower chamber 40. When the internal pressure increases, the upper pressure receiving plate 5 and the lower pressure receiving plate 6 receive pressure, move the operating shaft 19 upward, and push up the contact plate 17. Further, when the deflection of the contact plate 17 reaches a certain starting point, the U-shaped spring 18 is reversed and the contact 14 and the contact 15 come into contact with each other.
【００１６】その後、上室３０と下室４０の差圧が小さ
くなると、上方受圧板５及び下方受圧板６が下降し、こ
れに伴って作動軸１９も下方に移動する。そして作動軸
１９がある点より下方に移動すると、Ｕ字形バネ１８が
反転し、接点１４と接点１５が離れる。After that, when the pressure difference between the upper chamber 30 and the lower chamber 40 becomes smaller, the upper pressure receiving plate 5 and the lower pressure receiving plate 6 descend, and the operating shaft 19 also moves downward accordingly. When the operating shaft 19 moves below a certain point, the U-shaped spring 18 reverses and the contact 14 and the contact 15 separate.
【００１７】接点板１７の作動値の調整は、上記のとお
り調整ビス１０で行う。すなわち、調整ビス１０を図１
において右方向に回転させ、下室４０側に追い込むこと
により、調整板８と調整板８に固定された第１圧縮バネ
７は上方に押し上げられ、弾性力が増すため作動値が低
くなる。この接点板１７の作動値の調整にあたっては、
第２圧縮バネ９によって、常に調整板８が上方に付勢さ
れると同時に調整ビス１０も同様に上方に付勢されてい
るため、下室４０内の気密性が確保されると共に、調整
ビス１０の回転角度と調整板８の変位量、すなわち第１
圧縮バネ７の変位量の間に比例関係が生じるため、無加
圧時、すなわち差圧が０ｍｍＨ2Ｏ時に調整ビス１０で
スイッチを作動させ、次に設定圧分だけ調整ビス１０を
回転させれば良いので、実際に作動値を確認しながら調
整ビス１０の溝１０ａを介して調整板８の位置を調整す
る必要はなくなる。The adjustment of the operating value of the contact plate 17 is performed by the adjustment screw 10 as described above. That is, the adjustment screw 10 is shown in FIG.
By rotating in the right direction and driving to the lower chamber 40 side, the adjusting plate 8 and the first compression spring 7 fixed to the adjusting plate 8 are pushed upward, and the elastic force increases, so that the operating value decreases. In adjusting the operating value of the contact plate 17,
The second compression spring 9 constantly urges the adjusting plate 8 upward, and at the same time, urges the adjusting screw 10 upward as well, so that the airtightness in the lower chamber 40 is ensured and the adjusting screw is The rotation angle of 10 and the displacement amount of the adjusting plate 8, that is, the first
Since there is a proportional relationship between the displacements of the compression springs 7, the switch is operated by the adjusting screw 10 when no pressure is applied, that is, when the differential pressure is 0 mmH 2 O, and then the adjusting screw 10 is rotated by the set pressure. Since it is sufficient, it is not necessary to adjust the position of the adjusting plate 8 via the groove 10a of the adjusting screw 10 while actually confirming the operating value.
【００１８】接点板１７の作動差圧の調整は接点間調整
ビス１３によって行う。接点間調整ビス１３を図１にお
いて右方向に回転させ、上室３０側に追い込むことによ
り、接点板１７が下側にたわみ、接点１４、１５間の距
離が短くなり、反転しやすくなるため接点を閉じるため
の接点板１７の作動値が低くなる。The operation differential pressure of the contact plate 17 is adjusted by the contact adjusting screw 13. By rotating the contact adjusting screw 13 to the right in FIG. 1 and driving it toward the upper chamber 30, the contact plate 17 is bent downward, the distance between the contacts 14 and 15 is shortened, and it is easy to reverse the contact. The operating value of the contact plate 17 for closing is reduced.
【００１９】[0019]
【発明の効果】請求項１記載の発明によれば、接点板の
作動値の調整が容易になり、実際に作動値を確認しなが
ら調整ビスを介して調整板の位置を調整する必要はなく
なるため、微圧スイッチの生産工程が簡略化され、容易
に微圧スイッチを量産することが可能となる。According to the first aspect of the present invention, the operating value of the contact plate can be easily adjusted, and it is not necessary to adjust the position of the adjusting plate through the adjusting screw while actually checking the operating value. Therefore, the production process of the micro pressure switch is simplified, and the micro pressure switch can be easily mass-produced.
【００２０】さらに、請求項１に記載の発明によれば、
リードスイッチや磁石を使用していないので、磁場の影
響を受けることのない微圧スイッチを提供することが可
能となる。Further, according to the invention described in claim 1,
Since no reed switch or magnet is used, it is possible to provide a micro pressure switch that is not affected by the magnetic field.
【図１】本発明に係る微圧スイッチの実施例を示す断面
図である。FIG. 1 is a sectional view showing an embodiment of a micro pressure switch according to the present invention.
【図２】従来の微圧スイッチを示す断面図である。FIG. 2 is a cross-sectional view showing a conventional micro pressure switch.
１ 本体カバー ２ 端子盤 ３ ゴムパッキン ４ ダイヤフラム ５ 上方受圧板 ６ 下方受圧板 ７ 第１圧縮バネ ８ 調整板 ９ 第２圧縮バネ １０ 調整ビス １２ ビス固定用バネ １３ 接点間調整ビス １４、１５ 接点 １６、２１ 端子 １７ 接点板 １８ Ｕ字形バネ １９ 作動軸 ２０ 端子盤カバー 1 main body cover 2 terminal board 3 rubber packing 4 diaphragm 5 upper pressure receiving plate 6 lower pressure receiving plate 7 first compression spring 8 adjusting plate 9 second compression spring 10 adjusting screw 12 screw fixing spring 13 contact adjusting screw 14, 15 contact 16 , 21 Terminal 17 Contact plate 18 U-shaped spring 19 Working shaft 20 Terminal board cover
Claims (1)
ヤフラムと、該ダイヤフラムの両側面に当接する金属薄
板からなる受圧板と、該受圧板に圧接して該受圧板の変
位に追従する作動軸と、該作動軸の移動によって接離す
る接点とを有する微圧スイッチにおいて、 前記受圧板に当接し、該受圧板を前記作動軸側に付勢す
る第１圧縮バネと、 該第１圧縮バネの前記受圧板に当接する端部の反対側の
端部に当接する調整板と、 該調整板に当接し、該調整板の変位を調整する調整ビス
と、 前記調整板を前記受圧板側に付勢する第２圧縮バネを設
けたことを特徴とする微圧スイッチ。1. A diaphragm that deforms in response to a change in pressure of a fluid, a pressure receiving plate made of a thin metal plate that contacts both side surfaces of the diaphragm, and an operation that presses against the pressure receiving plate and follows the displacement of the pressure receiving plate. A micro-pressure switch having a shaft and a contact point that comes in contact with and separates from the operating shaft when the operating shaft is moved, the first compression spring being in contact with the pressure receiving plate and urging the pressure receiving plate toward the operating shaft side. An adjusting plate that comes into contact with an end of the spring that is opposite to the end that comes into contact with the pressure receiving plate, an adjusting screw that comes into contact with the adjusting plate and adjusts the displacement of the adjusting plate, and the adjusting plate with the pressure receiving plate side. A minute pressure switch characterized by being provided with a second compression spring for urging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19541595A JPH0945192A (en) | 1995-07-31 | 1995-07-31 | Micro pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19541595A JPH0945192A (en) | 1995-07-31 | 1995-07-31 | Micro pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0945192A true JPH0945192A (en) | 1997-02-14 |
Family
ID=16340715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19541595A Withdrawn JPH0945192A (en) | 1995-07-31 | 1995-07-31 | Micro pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0945192A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100877135B1 (en) * | 2008-09-26 | 2009-01-07 | 최상순 | Pressure switch for electric pump |
| KR100903104B1 (en) * | 2008-12-26 | 2009-06-16 | 최상순 | Pressure switch for electric pump |
| JP2014212005A (en) * | 2013-04-18 | 2014-11-13 | 日本空圧システム株式会社 | Seating switch device |
-
1995
- 1995-07-31 JP JP19541595A patent/JPH0945192A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100877135B1 (en) * | 2008-09-26 | 2009-01-07 | 최상순 | Pressure switch for electric pump |
| KR100903104B1 (en) * | 2008-12-26 | 2009-06-16 | 최상순 | Pressure switch for electric pump |
| JP2014212005A (en) * | 2013-04-18 | 2014-11-13 | 日本空圧システム株式会社 | Seating switch device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20021001 |