摘要:
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.
摘要:
An assembly method and a thermostat for an electric/gas oven are provided. An enclosure formed by a base and a cover for enclosing a switch subassembly includes axially aligned channels extending through opposed walls and external keying and positioning features. A pair of axially aligned actuators are received within the axially aligned channels. A frame having cooperating keying and positioning features positions and supports the enclosure containing the switch subassembly and supports both a temperature responsive subassembly and a spindle subassembly in operative position with respect to the actuators. The spindle subassembly includes a cam member mounted on a spindle for rotation with the spindle. The cam member provides a cam surface having a first cam rise equivalent in a first range of rotation of the spindle and a second cam rise equivalent in a second range of rotation of the spindle.
摘要:
A mechanical displacement amplifier is disclosed in which a displacement amplifying spring member essentially in the shape of a shallow V is positioned between a reference point structure and a displacement member so as to buckle in response to movement of the displacement member towards the reference point structure. A dimple is provided adjacent the buckling point of the spring member to prevent it from straightening entirely. A thermostat embodying the mechanical displacement amplifier is also disclosed, in which a push rod between a microswitch and the buckling point of the spring member actuates the microswitch. A temperature adjustment dial positions the reference point structure, and a temperature sensing unit is the displacement member.
摘要:
A control unit having a condition selector, an electrical switch, having an actuator unit provided with an adjustable movement differential a condition responsive device for actuating the switch when the condition responsive device senses certain conditions selected by the selector, and a lever arrangement carried by the unit and being operatively associated with the actuator unit of the switch and the device whereby the device can actuate the switch by the lever arrangement, the lever arrangement having a first adjustable lever operatively interconnected to the selector and acting as a main range lever. The first lever is operatively interconnected to the condition responsive device and to the actuator unit of the switch. The lever arrangement has a second adjustable lever operatively interconnected to the selector for and to the actuator unit of the switch adjusting the movement differential of the actuator unit of the switch.
摘要:
An overvoltage protection device has a plurality of overvoltage arresters and a disconnecting apparatus. For each of the overvoltage arresters a blocking element is present, each of which is arranged so as to block the path of movement of a mechanically preloaded wedge slide having a wedge bevel. A rocker lever arrangement has first lever arms corresponding to the number of wedge slides and at least one second lever arm for blocking or releasing a displacement element, wherein ends of the first lever arms each have a surface for contacting the respective wedge bevel of the wedge slides in such a way that, when the respective path of movement is released, at least one of the wedge slides lifts the corresponding first lever arm with its wedge bevel, as a result of which the second lever arm releases the displacement element.
摘要:
A temperature controller including a housing, a temperature sensor with an expansion element which generates a movement stroke as a function of the temperature. The controller includes a switching system having a switching spring on a switching spring base, upon which there acts the expansion element. An end remote from the spring contact of the switching spring is fastened to the switching spring base, an end remote from the fastening of the switching spring of the switching spring base is held securely and immovably on the temperature controller housing, the switching spring base working together with an adjustment element. To adjust the switching point of the switching system, the switching spring base together with the switching spring can be moved relative to the expansion element and/or to the actuating element.
摘要:
A trip device for a circuit breaker includes: a crossbar rotatably installed to perform the trigger function; and bimetal that is curved upon the occurrence of an abnormal current and presses and rotates the crossbar by means of a gap adjustment member. The crossbar is movable in the direction of a rotating shaft of the crossbar, and the gap adjustment member is attached to and detached from either the crossbar or the bimetal at varying angles so that a contact surface is parallel or at an angle to the direction of movement of the crossbar.