JPS6240517Y2 - - Google Patents
Info
- Publication number
- JPS6240517Y2 JPS6240517Y2 JP9663382U JP9663382U JPS6240517Y2 JP S6240517 Y2 JPS6240517 Y2 JP S6240517Y2 JP 9663382 U JP9663382 U JP 9663382U JP 9663382 U JP9663382 U JP 9663382U JP S6240517 Y2 JPS6240517 Y2 JP S6240517Y2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- cylinder
- diaphragm
- switch
- pressing 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
Links
- 239000012530 fluid Substances 0.000 claims description 4
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案は圧力スイツチにおけるピストンに関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a piston in a pressure switch.
この種圧力スイツチにおいては、スイツチ押圧
板を加圧流体の圧入により摺動するピストンを介
して押圧するように形成されているが、その際ピ
ストンの作動ストロークは例えば自動車のアンチ
スキツト装置に用いられる圧力スイツチのように
一定圧（200Kg／cm2）に達したとき0.5mm作動して
スイツチ接点部を押圧するように僅かなものであ
るため、ピストンの円滑な作動と耐久性が要求さ
れると共にそのケース内への組込みの簡易さが要
求される。 In this type of pressure switch, the switch pressing plate is pressed by a sliding piston by pressurized fluid, but the operating stroke of the piston is, for example, the pressure used in an automobile's anti-slip device. When a certain pressure (200Kg/cm 2 ) is reached, such as in a switch, the piston operates by 0.5mm and presses the switch contact, which is a small amount, so smooth operation and durability of the piston are required. Ease of integration into the case is required.
本考案はかゝる要求を満たすことを目的とした
もので、復帰ばね１２に支承されるスイツチ押圧
板１１を加圧流体の圧入により摺動するピストン
３を介してスイツチ接点部１０に押圧するように
した圧力スイツチにおいて、前記ピストン３を、
シリンダ４の上部開口に施されるダイヤフラム５
と、シリンダ４の下部開口に施されるダイヤフラ
ム１７とで密封したことを特徴とする。 The present invention is aimed at meeting such requirements, and presses the switch press plate 11 supported by the return spring 12 against the switch contact portion 10 via the sliding piston 3 by pressurized fluid. In such a pressure switch, the piston 3 is
Diaphragm 5 applied to the upper opening of cylinder 4
and a diaphragm 17 provided at the lower opening of the cylinder 4 for sealing.
これを図示実施例について説明すると図は自動
車のアンチスキツド装置に用いられる圧力スイツ
チを示すもので、１はケースを示し、該ケース１
の上部ケース１ａにはブレーキオイルに連る油室
２とピストン３を有するシリンダ４とが内装さ
れ、該シリンダ４の頂面には油室２と隔離するダ
イヤフラム５が張設されそのダイヤフラム５とピ
ストン３の頂面との間にはグリース６を封入する
と共にピストン３の外周面には複数の環状溝７を
形成して該環状溝７にバツクアツプリング８を介
してＯリング９が嵌挿されている。又ケース１の
下部ケース１ｂには下蓋１ｃを介して接点部１０
と、該接点部１０に対向する押圧板１１を支承す
る復帰ばね１２とが取付けられ該押圧板１１は重
合される上部押圧板１１ａと下部押圧板１１ｂと
をもつて形成されその上部押圧板１１ａは前記ピ
ストン３と同心の軸筒１１ｃを突設して該軸筒１
１ｃにストツプリング１３を介して環状の板ばね
１４を取付け、該板ばね１４は下部ケース１ｂに
設けたガイド孔１５にストツプリング１６を介し
て保持させた。そして上部ケース１ａと下部ケー
ス１ｂとは下部ケース１ｂの頂面でシリンダ４の
底面を圧接するようにかしめ付けられその際シリ
ンダの底面には下部ケース１ｂと隔離するダイヤ
フラム１７を設けて、ピストン３は下部ケースの
組立時にも汚染されないようにした。 To explain this with reference to the illustrated embodiment, the figure shows a pressure switch used in an anti-skid device of an automobile, and 1 indicates a case.
An oil chamber 2 connected to the brake oil and a cylinder 4 having a piston 3 are housed in the upper case 1a, and a diaphragm 5 is stretched over the top surface of the cylinder 4 to separate it from the oil chamber 2. Grease 6 is sealed between the piston 3 and the top surface of the piston 3, and a plurality of annular grooves 7 are formed on the outer peripheral surface of the piston 3, and an O-ring 9 is fitted into the annular grooves 7 via a back-up spring 8. has been done. Further, a contact portion 10 is connected to the lower case 1b of the case 1 via the lower cover 1c.
and a return spring 12 that supports a pressing plate 11 facing the contact portion 10 are attached.The pressing plate 11 is formed of an upper pressing plate 11a and a lower pressing plate 11b which are overlapped. The shaft cylinder 11c is provided protrudingly and concentrically with the piston 3.
An annular plate spring 14 was attached to 1c via a stop ring 13, and the plate spring 14 was held via a stop ring 16 in a guide hole 15 provided in the lower case 1b. The upper case 1a and the lower case 1b are caulked so that the top surface of the lower case 1b presses against the bottom surface of the cylinder 4. At this time, a diaphragm 17 is provided on the bottom surface of the cylinder to separate it from the lower case 1b. This also prevents contamination during assembly of the lower case.
次にその作動を説明すると油室２内に流体圧が
供給されて所定の圧力に達したときピストン３は
復帰ばね１２に抗して押圧板１１を押圧して接点
部１０を作動させるもので、このように本考案に
よるときはピストン３を、シリンダ４の上部開口
に施されるダイヤフラム５と、シリンダ４の下部
開口に施されるダイヤフラム１７とで密封したか
らピストン３は押圧板１１や復帰ばね１２と隔離
してケース１内に組込むことができるため、その
組込み時の合せ面に生ずる切粉等がシリンダ内へ
侵入することがなく、従つてその組込み作業を容
易にすると共にピストンの摺動面は常に清潔に保
たれて円滑な摺動と耐久性とを保持できる効果を
有する。 Next, to explain its operation, when fluid pressure is supplied into the oil chamber 2 and reaches a predetermined pressure, the piston 3 presses the pressure plate 11 against the return spring 12 to operate the contact part 10. In this way, according to the present invention, the piston 3 is sealed by the diaphragm 5 provided at the upper opening of the cylinder 4 and the diaphragm 17 provided at the lower opening of the cylinder 4, so the piston 3 is sealed by the pressing plate 11 or the return Since it can be assembled into the case 1 separately from the spring 12, chips generated on the mating surfaces during assembly will not enter the cylinder, making the assembly work easier and preventing piston sliding. The moving surface is always kept clean and has the effect of maintaining smooth sliding and durability.
図面は本考案の一実施例を示す縦断面図であ
る。
３……ピストン、４……シリンダ、５……ダイ
ヤフラム、１０……スイツチ接点部、１１……ス
イツチ押圧板、１２……復帰ばね、１７……ダイ
ヤフラム。
The drawing is a longitudinal sectional view showing an embodiment of the present invention. 3... Piston, 4... Cylinder, 5... Diaphragm, 10... Switch contact portion, 11... Switch pressing plate, 12... Return spring, 17... Diaphragm.
Claims (1)
を加圧流体の圧入により摺動するピストン３を介
してスイツチ接点部１０に押圧するようにした圧
力スイツチにおいて、前記ピストン３を、シリン
ダ４の上部開口に施されるダイヤフラム５と、シ
リンダ４の下部開口に施されるダイヤフラム１７
とで密封したことを特徴とする圧力スイツチにお
けるピストン。 Switch pressing plate 11 supported by return spring 12
In the pressure switch, the piston 3 is pressed against the switch contact portion 10 through the piston 3 which slides by the pressurization of the pressurized fluid. The piston 3 is connected to a diaphragm 5 provided at the upper opening of the cylinder 4 and a diaphragm 17 provided at the lower opening of the cylinder 4.
A piston in a pressure switch characterized by being sealed with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9663382U JPS592045U (en) | 1982-06-29 | 1982-06-29 | Piston in pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9663382U JPS592045U (en) | 1982-06-29 | 1982-06-29 | Piston in pressure switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS592045U JPS592045U (en) | 1984-01-07 |
| JPS6240517Y2 true JPS6240517Y2 (en) | 1987-10-16 |
Family
ID=30230212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9663382U Granted JPS592045U (en) | 1982-06-29 | 1982-06-29 | Piston in pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS592045U (en) |
-
1982
- 1982-06-29 JP JP9663382U patent/JPS592045U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS592045U (en) | 1984-01-07 |
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