摘要:
A pressure switch device (1) is disclosed in which an electrical switch (3) is operated when a fluid pressure (P) in a working pressure chamber (34) acting on an operating diaphragm (9) exceeds a limit value. A pivotally mounted T-shaped switch actuator (4) has its main limb extending generally along the longitudinal axis of the switch device when no fluid pressure is received in the working pressure chamber. A compression spring (5), when adjusted, acts against the indicator (4), thereby changing the resistance force acting against the fluid pressure (P) and therefore providing adjustment for the pressure limit value at which the pressure switch device responds. The switch (3) and the compression spring (5), are arranged on opposite sides of the T main limb, thereby providing a compact arrangement for the switch device. The main limb of the T-actuator includes a cantilevered actuating arm (40) which can be laterally deflected by a setting screw (52), for factory adjusting the position of an actuating part or operating tongue (22) of the switch (3) when no fluid pressure is admitted to the working pressure chamber (34).
摘要:
Es wird vorgeschlagen eine Anordnung (10) zum berührungslosen Schalten eines elektrischen Kontaktes (12) mittels einer eine vorbestimmte Schaltkraftschwelle übersteigenden Schaltkraft (17), mit
einem Schaltglied (14), mittels dessen die Schaltkraft (17) ausgeübt wird, einer an einer Einspannstelle (C) einseitig eingespannten Blattfeder (38), wobei das Schaltglied (14) zum Schalten an der Blattfeder (38) angreift, um die Blattfeder (38) von einer Ruheposition in eine Schaltposition (48') zu bewegen, wobei die Blattfeder (38) in der Ruheposition so angeordnet ist, daß deren Federkraft (51) die vorbestimmte Schaltkraftschwelle bildet.
Dabei sind Mittel (58; B) zur Veränderung der Lage (C 1 , C 2 ) der Einspannstelle (C) vorgesehen, so daß durch Veränderung der Lage (C 1 , C 2 ) der Einspannstelle (C) die Schaltkraftschwelle eingestellt werden kann (Fig. 1).
摘要:
A thermally actuated switching device, at least comprising a base body (2) provided with a back wall (21), an electric switch (10) and a spring-mounted actuating arm (3) for the switch (10) by transmitting an actuating movement, which arm (3) in the region of one end comprises a bent part (5) and a hinge axis (4), and the bent part (5) is able to connect with two clamping lips (27,28) supports, which are cut outs of the base wall (2) and of the back wall (21) and turned upwards to extend in a plane substantially parallel to the hinge axis (4). The base body (2,21) furthermore comprises one or more positioning elements (31,32), in which are inserted one or more projections (33,34) of the actuating arm (3), in order the latter to be secured in the direction of the hinge axis (4).
摘要:
The invention relates to a thermostat for adjusting temperature in electric apparatus comprising, inside a box-like body, a membrane, coupled to a liquid holding probe varying its volume as the temperature changes. The thermostat comprises a rocking member supporting a non conductive material pad, affecting a metal blade, depending on the volume variation, in turn depending on the temperature transmitted to the membrane. The blade is driven from a first position, providing an electrical connection between an input terminal and a first output terminal, to a second position, in which the blade is electrically connected to a second output terminal. The blade can be resiliently recovered to the first position thereof by a resilient fork element, the legs of which bear on an insulating diaphragm, provided with a hole for allowing the pad to pass therethrough.
摘要:
Ein Druckschalter für zum Beispiel Wasch- oder Geschirrspülmaschinen soll in der Lage sein, zumindest einen Schalter sehr genau mit hoher Kraft bei nur geringen Drücken zu betätigen. Der membranbetätigte Druckschalter weist eine Spinne (12) auf mit Hebelarmen (12a), (12c) und (12d). Ein Hebelarm (12d) stützt die Spinne (12) bei Schalterbetätigung in einer Richtung ab, die zumindest annähernd der Richtung entgegengesetzt ist, in der die Spinne (12) durch eine Kraft (M) niedergedrückt wird.
摘要:
A pressure operated switch device in which switch operation is effected by movement of the diaphragm in response to a fluid pressure difference across it, permanent magnets (40, 41) hold the diagphragm assembly (10) against switch operating movement until a reset device (45) is operated to release the diaphragm assembly from the magnets. A further permanent magnet (32) assists snap action and movement of the diaphragm assembly against the plungers of microswitches (20, 21), mounted on a bracket (25) which limits diaphragm movement against the plungers. A return spring (36) biasses the diaphragm assembly against the permanent magnets (40, 41).