E.g.o. Elektro Gerate Blanc U. Fischer

E.g.o. Elektro-Geraetebau Gmbh

Other

E.g.o. Elektro-Gerätebau Gmbh

Siegfried Mannuss

Heinz Petri

Eugen Wilde

Willi Essig

Robert Kicherer

Willi Reichert

Hans Mayer

Nils Platt

G&uuml;nther Reimold

Emmett L Nichols

Günther Reimold

According to the invention a switching device (,) for an electric heating device is provided with a rod-shaped temperature sensor (,) formed by a ceramic rod (,) and an extension tube (,). The temperature sensor (,) operates a snap-action switch (,) located in a base (,) by means of an actuator separate from the said switch, which has at least one actuating part (,), which is loaded in the actuating direction by a leaf spring (,), the actuating part (,) and leaf spring (,) being in one piece. In a further development of the invention the leaf spring (,) or actuating part (,) can be a receptacle for an adjusting device, preferably an adjusting screw (,).

Switching device for an electric heating device

A casing (,) of a thermostat (,), which is to be fixed to the rim (,) of a reception container (,) for a heating device, is substantially inserted in a recess (,) of the rim (,). The recess (,) is open to the outer edge of the rim (,) and has two lateral boundaries (,). In the fitted state the casing (,) forms a mechanical connection between the lateral boundaries (,) and closes the transmission of forces in the course of the rim (,) and in particular clamps together the rim in the circumferential direction. The fastening of the casing (,) and the bracing takes place by means of at least partly bent round and/or bend roundable fastening tongues (,) and/or clamping tongues (,), preferably emanating from the lateral boundaries (,). The invention inter alia leads to a positionally reliable positioning of the thermostat (,) on the reception container (,).

Fitting a casing of a switching device

An electrical switching device includes a switching device socket and terminals. The device also includes a snap-action switch with at least one catch spring. The catch spring carries at least one switching contact stud. The snap-action switch is trippable by a thermobimetal. For thermal influencing the thermobimetal, a heating device with a heating resistor mounted on a metal support is provided. The metal support can be made from a steel plate carrying an electrically insulating layer made from glass. An extensive heating resistor is provided on the insulating glass.

Electrical switching device

For reducing the click rate and improving the setting accuracy, in the case of a power control unit (11) for electric heating appliances, a contact separation (D) of two contacts (14, 15) can be varied independently of a position change of an appliance switch (12) with a snap-action element (16). Preferably, the position of the counterstop (33) is modified by an application thereof to a separation cam disk (36). The appliance switch position is fixed by means of a power cam disk (28) and determines the power level. In this way it is possible to randomly set within wide limits the click rite for each setting of the relative on period.

Power control unit with an appliance switch carrying a switching contact

In a radiant heating unit the temperature sensor (30) of a temperature limiter (29) extends over only part of the diameter of the heating field (17) in which the radiation heaters (13) are located. The temperature sensor is so constructed and/or mounted, that it exerts a pressure on the mounting support (44), e.g. in the form of a projecting member of the insulator (7), which is, e.g., located in the center of the heater. Thus, it keeps the insulation under a certain pretensioning pressure and it is simultaneously prevented that it is raised upwards and comes too close to the heated plate.

Radiant heating cook-top with biased temperature sensor

A device (1f), which is e.g. provided as an overheating protection means for detecting the temperature on a heating device (4f), apart from a temperature sensor (3f), also has an insulating connecting piece (20f) with all the connecting elements (23f) necessary for the electrical connection of the heating device (4f), in such a way that these connecting elements (23f), following the fastening of the device (1f) to the heating device (4f), are accessible directly adjacent to the outer circumference thereof and to the associated face (31f) of a device base (19f), so as to produce the necessary connections.

Temperature detection device

An adjusting shaft for an electric regulating or control device, which operates equipment functions by means of a control cam, is profiled to engage the control cam and can be installed subsequent to the complete assembly of the control device and fixed relative to the control device by a spring detent and associated stop. The stop can also serve to prevent unintentional rotation of the control cam until displacement of the stop against the opposition of a biasing spring. The subsequently installed shaft can allow use of universal control devices with random shaft lengths and types.

Adjustable device, particularly an electric switching, controlling or

An apparatus (1) for compensating the maladjustment of a power control means (2) by changes to the ambient temperature operates at least on a partial path against the flat spring (31) of a correcting device (30), after which at least part of the ambient temperature sensor (20) of the apparatus (1) is fixed against further deflection by a stop (34), so that the actual values of the power setting correspond to the set desired values substantially independently of the ambient temperature. For the correction spring (31) or for the stop (34) it is not necessary to provide a separate component, if use is made for the same of the already present twisting preventer (28) or a carrier (18).

Device for controlling an ambient influence on equipment

A rod sensor (1) has in the vicinity of a sliding guide (17) of an outer tube (2) a bolt-like, smooth abutment (4) for an inner rod (3), which prior to the insertion of the inner rod (3) and prior to the constructional joining of the temperature sensor (1) to a switch base (10) is adjusted with a measuring screw (36) against the tension of a spring (39) to a predetermined adjusting amount (30) and is firmly connected to the outer tube (2) by a welding mechanism (40) or the like. Thus, a very accurate adjustment is obtained in the case of a simple construction.

Temperature sensor

An electric switching device (1) in the form of a timed power control device with an appliance switch (6) operated by a heated thermobimetal (15) and in the form of a snap switch has an adjusting device (39) for modifying the distance between the opposite contact (36) and the counter-stop (37) for the movable switching contact (34), operated simultaneously with the setting of the different setting ranges of the switching device in such a way that in the low setting ranges the switching hysteresis of the appliance switch (6) is made smaller and in the higher setting ranges larger. Thus, in particular the smaller values of the relative switch on duration of the appliance switch (6) can be set much more accurately, so that there is a very precise power control in the low setting ranges.

Electric switching device, operable for power control

A controller has an axially releasable locking unit operable to prevent rotation of a regulating shaft from at least one locking position, without first axially moving the regulating shaft. This push-to-turn or pull-to-turn locking unit is arranged entirely outside of a housing of the controller, and is arranged with mounting particulars matched to those of the controller such that the same controller assembly can be used interchangeably either with a push-to-turn locking unit or without such a unit.

Controller for controlling electrical heaters

A power control includes a thick film resistor on an electrically insulating support plate, for heating a bimetal strip operating switch contacts connecting power to a load, and to the resistor. The support plate is secured and the resistor thereon is electrically contacted by means of a resilient clip at one end, in the vicinity of a fixed end of the bimetal strip. An opposite end of the support is connected to a power source via a movable contact spring. An opposite free end of the bimetal strip acts directly on the switch contacts to disconnect power upon bending of the bimetal strip with heat. The bimetal strip and a control operator for biasing the bimetal strip are shaped like an L, with two legs pivotable around a pin adjacent the base of the bimetal strip.

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Sternenfels, Germany

Siegfried Mannuss