Lockable electric switch

FIELD: electrical engineering.

SUBSTANCE: invention relates to an electric circuit breaker, in particular for electric machine. Electric switch for electric processing machine comprises a first switching device and a second switching device. First switching device is configured for reversible transition from a first switched state to a second state due to movement of a first mechanical signalling element. Second switching device is configured for reversible transition from a third switched state, in which electric switch acts as a pushbutton, to a fourth state, in which electric switch acts as a rocker switch due to movement of second electric or mechanical signalling element. Second switching device comprises a second actuating element interacting with second signalling element. Fourth switching state is allowing fixation of state of electric switch in which first signalling element can be fixed through second actuating element.

EFFECT: technical result is providing reliability of controlling process machine.

12 cl, 15 dwg

 



 

Same patents:

Percussion tool // 2520246

FIELD: process engineering.

SUBSTANCE: proposed tool has motor, case, handle damping material, manual working element mode selector, movable element and resilient element. Damping material is arranged between case and handle to connect them so that both can displace relative to each other in axial direction of bit. Manual working element is driven by motor, arranged at said handle and shifted from ON position to OFF position. Mode selector is arranged and tool case to select between first mode whereat said bit is continuously operated and second mode whereat it is driven selectively. Movable element can shift said bit with the help of said mode selector. Resilient element is arranged at vibration transfer path. Said resilient element prevents vibration transfer to handle with mode selector at first ON mode and locks the working element at movable element IN position.

EFFECT: damped vibrations at hand-held tool with bit mode selection.

13 cl, 16 dwg

Electric device // 2486622

FIELD: electrical engineering.

SUBSTANCE: electric device (10) contains packet switch (12) envisaged for power supply switching on and off to a power using unit (14) and control unit (16) in order to control the power using unit (14) that is a motoring unit (80). According to the invention the electric device contains shunting unit (18) provided to supply power to the control unit (16) in case of power supply switching off by the packet switch (12).

EFFECT: prevention of undesired run-up time at starting-up or connection of the power using unit.

15 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building. Proposed device comprises brush part and structural part to be secured on tool vase, and pair of fixed contacts to be connected to motor winding. Said brush part makes motor brush holder to revolve about structural part. Said brush part has pair of moving contacts arranged between fixed contacts to change conditions of contact between said fixed and moving contacts by rotation. End of any said contact represents an elastic end to be deformed in contact with another contact. Structural or brush part has a regulative part adjoining to elastic part for regulation the degree of deformation thereof.

EFFECT: longer life.

12 cl, 8 dwg

FIELD: electric engineering.

SUBSTANCE: invention relates to electric engineering and may be used as switching unit for electric tools. The switching unit for electric tools contains at least one reset mechanism (29) with switch element (30). The said switch element (30) includes at least two hand-operated control elements for switching on and off the first reset mechanism (29) and clamping element (33) intended for clamping the above mentioned switch element in "on" position. The on-line mode is switched off by the first (36) and second (37) control elements.

EFFECT: improved quality of operation and safety.

24 cl, 8 dwg

FIELD: electrical engineering.

SUBSTANCE: the electric power switch has a body and a connecting bus with an arcing horn with a fastening shelf installed on it. The connecting bus passes through a hole of the rear panel of the body. For connection of the arcing horn to the connecting bus a boss is provided on the fastening shelf of the arcing horn, and a recess receiving the boss-on the connecting bus. The fasteners catch a jumper located on the lower side of the connecting bus. At pushing in of the connecting bus with the laid over arcing horn, its fastening shelf from above and from the side is overlapped by a bead positioned on the body. Thus, the fastening board becomes free of the fasteners.

EFFECT: simplified wiring of the connecting bus and arcing horn and improved accessibility of the fastener for the arcing horn.

4 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: training method is implemented by direct-current high voltage feeding to complete gap between contacts in stages starting from 0.3-0.5 of rated operating voltage. Simultaneously permanent magnet field is created along direction of the gap and its intensity value is increased smoothly from zero up to prebreakdown current moment of about 0.6-0.8 of breakdown current at test voltage. The gap is hold at set voltage equal to 2-3 times of prebreakdown current measured at the beginning till drop, at the first training stage. Magnet field intensity is decreased up to zero and the next stage of training voltage is set. Value of field intensity is increased again from zero up to prebreakdown current available at the first stage. The above cycle is repeated at the next stages. At the last stage training voltage is set as 1.2-1.5 times bigger than testing voltage. The process is repeated at reverse polarity of high voltage applied to the gap and reverse direction of permanent magnet field.

EFFECT: reducing overspray of contact materials and improving electrical strength and reliability at decrease of power consumption.

2 cl

FIELD: information technologies.

SUBSTANCE: capacitance sensor element (10) comprises a base (1) in the form of a film or a plate, which is formed from an insulating material and has flexible or spatial shape, an electrode (2) of detection, arranged at least on a part of one surface of the base (1) and formed from a translucent conducting layer, comprising a carbon linear nanostructure, such as a carbon nanotube, and an outlet wire (3), which is an outlet from the detection electrode (2). The capacitance device of contact detection comprises a sensor element (10) and a circuit (60) to detect variation of capacitance, which is electrically connected with the detection electrode (2) via the outlet wire (3) and which determines variation of capacitance caused by approaching of a human body to the contact surface (4) or contact of a human body to the contact surface (4). The detection electrode (2) may be coated with a protective film, and the surface of the protective film may be used as the contact surface.

EFFECT: expansion of usage area due to increased extent of freedom of a shape of a capacitance detection device, such as a sensor panel.

20 cl, 1 dwg

Panel device // 2465675

FIELD: electricity.

SUBSTANCE: panel device (10) for operations input comprises a panel section (311), the first conducting layer (38), arranged on the side of one surface (31a) of the panel section (31), an insulating layer (34), which is imposed onto the first conducting layer (38) and the second conducting layer (32), imposed onto the insulating layer (34). The first conducting layer (38) and the second conducting layer (32) are made by application of a coating from a dissolved electroconductive substance (38a, 32a). The insulating layer (34) is arranged by application of a coating from an insulating substance of hardening accelerating type (34a). The panel device may be manufactured by the method of screen printing.

EFFECT: improved protective properties of an insulating layer, reduced time to manufacture a panel device.

3 cl, 8 dwg

FIELD: electricity.

SUBSTANCE: vacuum chamber is encapsulated together with moulding core which is attached to it on its lower cover. Before encapsulation, on outer circumferential line of vacuum interruption chamber cover or close to it, compensation ring is accommodated as separate die cast-moulded seal between lower cover of interruption vacuum chamber and moulding core, and then also encapsulated so that it stays as residual seal in sheath. Then, moulding core is removed.

EFFECT: excluding necessity to make expensive reinforcement of interruption vacuum chamber against force impacts during die-casting on switching contact side in the area of moulding core.

16 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: in the process of circuit breaker installation, when time-optimal by bounce contact pressing is set the stability of circuit closing and/or opening by moving contact is checked. This check is performed by means of feeding voltage pulses to control winding. The pulses will be 2.5-3 longer than vacuum circuit-breaker actuation time and their total number will be 1 to 10% of commutation guaranteed number during field operation depending on circuit breaker type. In this process, after the time period that is 1.5-2 times longer than circuit breaker actuation time, the number of commutations is recorded that did not cause closing and/or opening of contacts circuit, and in their presence additional adjustment of bridge contact preload and the second check of contacts circuit closing and opening stability is performed.

EFFECT: increasing stability of contacts circuit closing and opening during commutation, decreasing probability of contacts circuit opening and enhancement of high-frequency current passage reliability during operation in conditions of acceleration, mechanical loads and high temperatures.

3 cl

FIELD: electricity.

SUBSTANCE: invention relates to training of vacuum arc-quenching chambers of high voltage by pulse discharges of high voltage of various polarity after chamber tapping, which is performed as charge of not more than 10 microcoulomb for each of discharges passes through trained gap.

EFFECT: invention provides for high electric strength of vacuum arc-quenching chamber of high voltage due to reduction of changes on surface of contacts at arc stage of pulse discharge.

1 dwg, 2 ex

FIELD: manufacturing metal-glass and metal-ceramic double- and single-break vacuum switches, selector switches, and relays.

SUBSTANCE: proposed method for controlling contact pressure in vacuum switches incorporating flexible and rigid contact bridge with built-in nonpolarized electromagnetic control system upon their heat treatment in vacuum and tapping involves measurement of closed contact resistance at voltage across electromagnet control winding at least 1.5-2 times lower than rated value, comparison of measurement result with resistance at same voltage across control winding of switch having optimal contact pressure, and evaluation of contact pressure deviation in switch under check from reference value.

EFFECT: enhanced reliability of check results.

1 cl

FIELD: manufacture of vacuum circuit breakers, switches, relays, and other high-voltage electronic devices.

SUBSTANCE: proposed method that can be used for manufacturing high-voltage vacuum switch and its contact gap pre-burning with high voltage in the course of vacuum-engineering treatment includes voltage application across open contacts and across spark-gap control electrode connected in parallel with them simultaneously; spark-gap firing voltage is supplied on occurrence of high-power breakdown or gaseous discharge between contacts from resistive voltage divider connected in series with contacts to spark-gap control electrode.

EFFECT: enhanced operating reliability, service life, and yield due to reduced leakage current and insulation sheath heating, as well as due to eliminating excessive contact pre-burning effect.

3 cl, 1 dwg

FIELD: manufacture of high-voltage circuit-opening devices.

SUBSTANCE: proposed method used for assembling primarily double-break high-voltage vacuum circuit breakers, switches, and relays of metal-glass or metal-ceramic design form incorporating flexible or rigid contact bridge set in motion either by built-in neutral or polarized electromagnetic control system or by means of membrane (bellows) from similar electromagnetic control systems disposed in vacuum enclosure includes measurement of contact chatter time in the course of assembly upon circuit closure directly as soon as circuit is closed when supply voltage is applied across control winding, comparison of contact chatter time with reference value, and adjustment of contact pressure at each contact break in case of inadmissible deviation from this value for which purpose enclosure is displaced relative to electromagnet case about its axis and in motion plane of movable contact while measuring contact chatter time, enclosure being moved until equal contact pressure is obtained during each contact break at chatter time complying with reference value.

EFFECT: enhanced stability, operating reliability, and yield due to affording equal optimal contact pressure at each contact break in the course of device assembly.

1 cl

The invention relates to the field of electrical engineering

FIELD: manufacture of high-voltage circuit-opening devices.

SUBSTANCE: proposed method used for assembling primarily double-break high-voltage vacuum circuit breakers, switches, and relays of metal-glass or metal-ceramic design form incorporating flexible or rigid contact bridge set in motion either by built-in neutral or polarized electromagnetic control system or by means of membrane (bellows) from similar electromagnetic control systems disposed in vacuum enclosure includes measurement of contact chatter time in the course of assembly upon circuit closure directly as soon as circuit is closed when supply voltage is applied across control winding, comparison of contact chatter time with reference value, and adjustment of contact pressure at each contact break in case of inadmissible deviation from this value for which purpose enclosure is displaced relative to electromagnet case about its axis and in motion plane of movable contact while measuring contact chatter time, enclosure being moved until equal contact pressure is obtained during each contact break at chatter time complying with reference value.

EFFECT: enhanced stability, operating reliability, and yield due to affording equal optimal contact pressure at each contact break in the course of device assembly.

1 cl

FIELD: manufacture of vacuum circuit breakers, switches, relays, and other high-voltage electronic devices.

SUBSTANCE: proposed method that can be used for manufacturing high-voltage vacuum switch and its contact gap pre-burning with high voltage in the course of vacuum-engineering treatment includes voltage application across open contacts and across spark-gap control electrode connected in parallel with them simultaneously; spark-gap firing voltage is supplied on occurrence of high-power breakdown or gaseous discharge between contacts from resistive voltage divider connected in series with contacts to spark-gap control electrode.

EFFECT: enhanced operating reliability, service life, and yield due to reduced leakage current and insulation sheath heating, as well as due to eliminating excessive contact pre-burning effect.

3 cl, 1 dwg

FIELD: manufacturing metal-glass and metal-ceramic double- and single-break vacuum switches, selector switches, and relays.

SUBSTANCE: proposed method for controlling contact pressure in vacuum switches incorporating flexible and rigid contact bridge with built-in nonpolarized electromagnetic control system upon their heat treatment in vacuum and tapping involves measurement of closed contact resistance at voltage across electromagnet control winding at least 1.5-2 times lower than rated value, comparison of measurement result with resistance at same voltage across control winding of switch having optimal contact pressure, and evaluation of contact pressure deviation in switch under check from reference value.

EFFECT: enhanced reliability of check results.

1 cl

FIELD: electricity.

SUBSTANCE: invention relates to training of vacuum arc-quenching chambers of high voltage by pulse discharges of high voltage of various polarity after chamber tapping, which is performed as charge of not more than 10 microcoulomb for each of discharges passes through trained gap.

EFFECT: invention provides for high electric strength of vacuum arc-quenching chamber of high voltage due to reduction of changes on surface of contacts at arc stage of pulse discharge.

1 dwg, 2 ex

FIELD: electricity.

SUBSTANCE: in the process of circuit breaker installation, when time-optimal by bounce contact pressing is set the stability of circuit closing and/or opening by moving contact is checked. This check is performed by means of feeding voltage pulses to control winding. The pulses will be 2.5-3 longer than vacuum circuit-breaker actuation time and their total number will be 1 to 10% of commutation guaranteed number during field operation depending on circuit breaker type. In this process, after the time period that is 1.5-2 times longer than circuit breaker actuation time, the number of commutations is recorded that did not cause closing and/or opening of contacts circuit, and in their presence additional adjustment of bridge contact preload and the second check of contacts circuit closing and opening stability is performed.

EFFECT: increasing stability of contacts circuit closing and opening during commutation, decreasing probability of contacts circuit opening and enhancement of high-frequency current passage reliability during operation in conditions of acceleration, mechanical loads and high temperatures.

3 cl

FIELD: electricity.

SUBSTANCE: vacuum chamber is encapsulated together with moulding core which is attached to it on its lower cover. Before encapsulation, on outer circumferential line of vacuum interruption chamber cover or close to it, compensation ring is accommodated as separate die cast-moulded seal between lower cover of interruption vacuum chamber and moulding core, and then also encapsulated so that it stays as residual seal in sheath. Then, moulding core is removed.

EFFECT: excluding necessity to make expensive reinforcement of interruption vacuum chamber against force impacts during die-casting on switching contact side in the area of moulding core.

16 cl, 2 dwg

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