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:
A thermostat has a switch, a temperature sensor, a lever, a spring, and a control plate. The sensor generates a force to operate switch in response to the ambient temperature. The lever having an arm turns with the force from the sensor to open/close contacts of the switch. The first end of the spring is hooked to the lever to bias a force to the lever in the direction opposite to the force from the sensor. The control plate is hooked to the second end of the spring and is disposed on the lever, allowing a force for turning the lever to increase or to decrease due to turning of the control plate. The control plate turns the arm to perform the forced switch-off operation.