JPS62173138U

JPS62173138U -

Info

Publication number: JPS62173138U
Application number: JP6016986U
Authority: JP
Priority date: 1986-04-23
Filing date: 1986-04-23
Publication date: 1987-11-04
Also published as: JPH0334823Y2

Description

[Brief explanation of the drawing]

第１図は冷媒の圧力が異常に低く、その温度が
正常である時の本案スイツチの概略の断面図、第
２図は、冷媒の圧力、温度とも正常な場合の同様
の断面図、第３図は冷媒の温度は正常であるが、
その圧力が異常に高い場合の同様の断面図、第４
図は冷媒の圧力は正常であるが、その温度が異常
に高い場合の同様の断面図で、第５図は従来のこ
の種スイツチの同様の断面図である。１１…ケース、１２…作動室、１３…カバ、１
４…通路、１５…ダイヤフラム、１８…ストツパ
、１９…突出縁部、２０…第１の受け、２１…鍔
部、２２…穴、２３…環状のビード、２４…バイ
メタル、２５…第２の受け、２６…孔、２７，２
８…突起、２９…開口、３０…第１の反転板、３
１…第２の反転板、２３…支持孔、３３…ガイド
、３４…ガイド孔、３５…段部、３５ａ…フラン
ジ、３６…環状の突条、３７…作動棒、３８…大
径部、３９…中径部、４０…小径部、４１，４２
…ターミナル、４３…固定端子、４４…スイツチ
レバ、４５…可動端子。 Figure 1 is a schematic sectional view of the proposed switch when the refrigerant pressure is abnormally low and its temperature is normal. Figure 2 is a similar sectional view when both the refrigerant pressure and temperature are normal. The figure shows that the refrigerant temperature is normal, but
Similar cross-sectional view when the pressure is abnormally high, No. 4
The figure is a similar sectional view when the refrigerant pressure is normal but the temperature is abnormally high, and FIG. 5 is a similar sectional view of a conventional switch of this type. 11...Case, 12...Working chamber, 13...Cover, 1
4... Passage, 15... Diaphragm, 18... Stopper, 19... Projecting edge, 20... First receiver, 21... Flange, 22... Hole, 23... Annular bead, 24... Bimetal, 25... Second receiver , 26...hole, 27,2
8...Protrusion, 29...Opening, 30...First reversal plate, 3
DESCRIPTION OF SYMBOLS 1... Second reversal plate, 23... Support hole, 33... Guide, 34... Guide hole, 35... Step part, 35a... Flange, 36... Annular protrusion, 37... Operating rod, 38... Large diameter part, 39 ...Medium diameter part, 40...Small diameter part, 41, 42
...terminal, 43...fixed terminal, 44...switch lever, 45...movable terminal.

Claims

[Scope of utility model registration request]

A switch main 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, A plate-shaped stopper that squeezes the inside of the working chamber while in contact with the diaphragm and has a protruding edge in the opposite direction to the diaphragm, and a flange that is sandwiched between the stopper and has a peripheral edge facing in the opposite direction to the protruding edge of the stopper. , and has a hole in the center and an annular bead between the hole and the flange.
a bimetal whose peripheral edge engages the flange of the first receiver and is deviated toward the stopper at room temperature; a second receiver having a hole with a larger diameter than the hole in the receiver and having a circumferential protrusion on the stopper side and a side opposite thereto; the circumferential edge engages with the protrusion on the stopper side of the second receiver; a first reversing plate having an opening in the center having approximately the same diameter as the hole of the first receiving hole and normally deviated toward the first receiving side and in contact with the annular bead; The part engages with the protrusion on the opposite side of the second receiver from the stopper, has a support hole in the center having approximately the same diameter as the hole in the second receiver, and is always deviated toward the second receiver. a second reversing plate having a guide hole having a larger diameter than the hole of the second receiver in the center and a flange on the periphery that engages with the case in a direction opposite to the second receiver; a guide having an annular protrusion constantly in contact with the second reversal plate at an intermediate portion between the flange and the guide hole; a large diameter portion, a medium diameter portion;
It has a small diameter part, the large diameter part is the guide hole, the medium diameter part is the support hole of the second reversing plate and the hole of the second receiver,
The small diameter portion has an operating rod that loosely passes through the opening of the first reversing plate and the hole of the first receiver, and is supported by the case so as to face each other, one end of which is outside the case, and the other end of which is in the operating chamber. A pair of exposed terminals, a fixed terminal whose end on the working chamber side of one terminal is fixed, and a movable terminal whose one end is fixed to the end of the other terminal on the working chamber side and whose free end faces the fixed terminal. A temperature- and pressure-responsive switch comprising a switch lever facing the operating rod and having a spring action so that the contacts are always closed.