JPS62163837U

JPS62163837U -

Info

Publication number: JPS62163837U
Application number: JP5146886U
Authority: JP
Priority date: 1986-04-08
Filing date: 1986-04-08
Publication date: 1987-10-17
Also published as: JPH0329864Y2

Description

[Brief explanation of the drawing]

第１図は本案圧力スイツチの一実施例の縦断面
図で冷媒時の異常低温時における各部材の位置を
示して居る。第２図は冷媒の所定圧時における各
部材の位置を示す同様断面図、第３図は冷媒の異
常高圧時における各部材の位置を示す同様断面図
で、第４図は従来の圧力スイツチの概略の縦断面
図である。１１……ケース、１２……カバ、１４……作動
室、１５……通路、１６……ダイヤフラム、１７
……受け、１８……通孔、２１……第１の反転板
、２２……ガイド、２４……段部、２５……ガイ
ド孔、２８……第２の反転板、２９……孔、３０
……作動棒、３１……大径部、３２……小径部、
３４，３５……ターミナル、３６……スイツチレ
バ、３７……可動接点、３８……固定接点。 FIG. 1 is a longitudinal sectional view of one embodiment of the pressure switch of the present invention, showing the positions of each member when the refrigerant is at an abnormally low temperature. Fig. 2 is a similar sectional view showing the position of each member when the refrigerant is at a predetermined pressure, Fig. 3 is a similar sectional view showing the position of each member when the refrigerant is at abnormally high pressure, and Fig. 4 is a similar sectional view showing the position of each member when the refrigerant is at an abnormally high pressure. FIG. 3 is a schematic vertical cross-sectional view. 11... Case, 12... Cover, 14... Working chamber, 15... Passage, 16... Diaphragm, 17
...Receiver, 18...Through hole, 21...First reversal plate, 22...Guide, 24...Step, 25...Guide hole, 28...Second reversal plate, 29...Hole, 30
...Operating rod, 31...Large diameter part, 32...Small diameter part,
34, 35...terminal, 36...switch lever, 37...movable contact, 38...fixed contact.

Claims

[Scope of utility model registration request]

A switch body consisting of a case having an operating chamber inside, a cover that seals the case and has a passage through which pressure fluid passes, a diaphragm whose periphery is held between the case and the cover, and the inside of the case. a first reversing plate that is in contact with the diaphragm, is supported by the periphery of the diaphragm, and is recessed toward the passage when no pressure is applied; A second reversing plate whose peripheral edge is supported on the side corresponding to the first reversing plate, has a hole in the center, and is convex toward the case side when no pressure is applied; A guide that engages with a step in the case, has a guide hole in the center having a larger diameter than the through hole of the receiver, and has an annular bead in contact with the second reversal plate, and a large diameter part and a small diameter part. an actuating rod whose large diameter portion loosely passes through the guide hole and whose small diameter portion loosely passes through the hole of the second reversing plate and the through hole of the receiver; A pair of terminals located in a chamber, a leaf-shaped switch lever whose one end is supported by one terminal and has a movable contact at its free end and has a spring action that constantly closes the contact, and a switch lever provided at the other terminal and facing the movable contact. Pressure switch consisting of fixed contacts.