WO2018204997A1 - Clé électrique à action rapide et procédé de montage de clé électrique à action rapide - Google Patents

Clé électrique à action rapide et procédé de montage de clé électrique à action rapide Download PDF

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Publication number
WO2018204997A1
WO2018204997A1 PCT/BR2017/050107 BR2017050107W WO2018204997A1 WO 2018204997 A1 WO2018204997 A1 WO 2018204997A1 BR 2017050107 W BR2017050107 W BR 2017050107W WO 2018204997 A1 WO2018204997 A1 WO 2018204997A1
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WO
WIPO (PCT)
Prior art keywords
slide
electric switch
bistable
fast
electrical contacts
Prior art date
Application number
PCT/BR2017/050107
Other languages
English (en)
Portuguese (pt)
Inventor
Marcelo DE MELO SILVA
André DE BARROS ALBUQUERQUE
Leonardo LUIZ VETORE
Original Assignee
Weg Drives & Controls- Automação Ltda.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weg Drives & Controls- Automação Ltda. filed Critical Weg Drives & Controls- Automação Ltda.
Priority to PCT/BR2017/050107 priority Critical patent/WO2018204997A1/fr
Priority to BR112019025093-0A priority patent/BR112019025093A2/pt
Publication of WO2018204997A1 publication Critical patent/WO2018204997A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs

Definitions

  • the present invention relates to a fast acting electric switch comprising a bistable subset, a slide and associated springs acting on an electrical contact bridge to open or close movable electrical contacts relative to electrical contacts. and a coupling coupling, among other components, wherein the bistable subassembly slide comprises a first part and a second part, with a gap between the first part and the second part allowing positioning of a coupling coupling, axially independent of the electrical contact bridge, containing a sequential process that facilitates handling, said fast-acting electrical switch to be used in an electrical circuit in association with a low voltage electrical device such as a contactor actuator, relay, circuit breaker, contactor-dis jumper or single-phase electric motor, among others.
  • a low voltage electrical device such as a contactor actuator, relay, circuit breaker, contactor-dis jumper or single-phase electric motor, among others.
  • Fast acting electrical switches are commonly used devices for interrupting electrical circuits, and are sized to withstand the permanent passage of electric current, where the displacement of a driving element is slow and the response of electrical contacts for opening and closing. It should be quick, where it is common to use a bistable mechanism that, at any given moment, changes its position, in order to avoid electric arc damage to these electrical contacts.
  • a well-known concept uses a central slide and two springs, containing mainly an electrical contact bridge mounted transversely to these springs.
  • EP0221801B1 discloses a remotely actuated switch comprising a coil and external control means to allow current to flow into the coil and a hysteresis driven mechanism through an oblong hole in the actuator to open a normally closed contact.
  • EP1212772B1 where a bistable contact system controls a "double" coil, and where an open position retention of the electrical contacts is made by magnets and the movable contact has a ferromagnetic part. to adhere to said magnet when the system is in the open position, and to close the electrical contacts, and where a displacement is made, overcoming the force of the magnet, aided by a spring, to maintain pressure on the closed electrical contacts.
  • US3,769,474A is a fast acting switch having a movable actuator that receives an operating force and initially has a neutral movement in connection with a toggle bar on which a toggle spring acts, to prevent its movement. A bulging spring interposed between the toggle bar and the actuator is loaded upon the neutral forward movement of the actuator.
  • the actuator advance operates against the force of the toggle spring to advance the toggle bar to a point where the toggle force of the toggle spring is less than the force of the bulging spring, and then the trigger fires.
  • toggle spring resulting in a fast incremental advance of the toggle bar, which reverses the direction of the toggle spring force, releasing the contact member out of the contact of a contact set, and then connecting to a second contact set .
  • US2,918,544 reports advances in fast acting switches, which show an improvement of a pressure switch containing two circuits having pairs of electrical contacts, and a movable contact blade positioned between them, which is normally driven by actuator plate to a pair of fixed contacts on one side and by touching with another pair of opposite fixed contacts on the other, where a pair of opposing compression springs act between the actuator plate and the moving contact blade, providing a floating mounting of the contact blade relative to said actuator plate.
  • the compression springs operatively surround the actuator plate and the contact blade through the spring pivot, which consist of edge blades and spring guides resting on it. At Edge blades and spring guides are supported long enough to resist relative rotation between them, and where cleaning between the fixed and movable contacts is proposed through relative movement between the contacts.
  • EP1473749B1 discloses a control device for a switch, for example a contactor, having a slide for operating auxiliary electrical contacts, providing the hysteresis function, such that a second contact state is obtained at the end of under the action of a coil, providing a hysteresis function so that the open and closed contact states obtained at the end of the stroke bring the anchor system to rest and work positions, respectively.
  • An object of the invention is to provide a switch device with fewer components than the prior art.
  • Another object of the invention is to axially compact the operation of the fast acting electric switch assembly.
  • Another object of the invention is to enable preparation to facilitate the process of assembling the fast acting electric switch.
  • the invention aims at the direct integration with the mobile core of an electromagnetic switch, such as a contactor, relay, circuit breaker, contactor-breaker, single-phase electric motor, for example.
  • an electromagnetic switch such as a contactor, relay, circuit breaker, contactor-breaker, single-phase electric motor, for example.
  • Another object of the invention is to provide a snap closure for the fast acting electric switch.
  • Another object of the invention is to provide a package meeting the above requirements to be compact and simplified.
  • Another object of the invention is to provide a fast acting electric switch for reducing energy consumption under a switchable electrical circuit.
  • Figure 1 shows a simplified electrical circuit diagram containing a power control system comprising series connected windings and a fast acting electrical switch electrically connected in parallel to one of the windings according to the invention.
  • Figure 2 shows a simplified electrical circuit diagram containing a power control system comprising parallel connected windings and a fast acting electric switch, electrically connected in series to one of the windings according to the invention.
  • Figure 2a shows a simplified electrical circuit diagram containing a power control system comprising parallel connected windings, where a capacitor and a fast acting electrical switch are electrically connected in series with one of the windings according to with the invention.
  • Figure 3 shows a simplified electrical circuit diagram, containing a one-winding power control system and electrically connected resistors, comprising a fast acting electric switch electrically connected in parallel with said resistor according to the invention.
  • Figure 4 is a schematic representation of an operation graph of the complete motion of the fast acting electric switch components, object of the invention, from the initial state, moving to the final state, and their return to the initial state. , where its force-course relationship is demonstrated.
  • Figure 5 is an exploded perspective view of the components of a sliding subset.
  • Figure 6 is a perspective view of an assembled sliding subset.
  • Figure 7 is an exploded top perspective view of an assembled sliding subset and the step of introduction into the housing of the quick acting electric switch.
  • Figure 8 is an exploded bottom perspective view of an assembled sliding subassembly and the step of introduction into the housing of the quick acting electric switch.
  • Figure 9 is an exploded top perspective view of a sliding subassembly mounted on the housing and the step of introducing the quick-acting power switch cover.
  • Figure 10 is an exploded bottom perspective view of a sliding subassembly mounted on the housing and in the process of introducing the quick acting electric switch cover.
  • Figure 11 is a perspective representation of a preferred embodiment of the normally closed, fast acting electric switch object of the invention in a closed state of the electrical contacts.
  • Figure 12 is a perspective representation of a preferred embodiment of the normally closed, fast acting electric switch object of the invention in an open state of the electrical contacts.
  • Figure 13 depicts the components of the normally closed quick-acting power switch, in top view without cover, with the electrical contacts closed.
  • Figure 14 represents the components of the normally closed, fast acting electric switch, in top view without cover, in intermediate state of movement of the electrical contacts.
  • Figure 15 depicts the components of the quick-acting power switch normally closed in top view without cover, with the electrical contacts open.
  • Figure 16 depicts the quick-action switch components normally closed in top view without cover, with electrical contacts open and at stroke end.
  • Figure 17 is a side cross-sectional representation of a preferred embodiment of the normally closed, fast-acting electric switch object of the invention in a closed state of the electrical contacts (not shown) coupled to the core of a contactor. inactive state.
  • Figure 18 is a side sectional representation of a preferred embodiment of the normally closed, fast-acting electric switch object of the invention in an open state of the electrical contacts (not shown) coupled to the core of a contactor. active state.
  • Figure 19 shows in side section a second preferred embodiment of the fast acting electric switch associated with a single phase electric motor at rest, and closed position of the electrical contacts.
  • Figure 20 shows in side section a second preferred embodiment of the quick-acting electric switch associated with a single-phase electric motor in rotor rated rotation under the action of centrifugal force and open position of the electrical contacts.
  • FIG. 1 is presented an electrical circuit diagram, containing a power input circuit with a current input, with power terminal (T1), comprising electrically connected main winding (A) and secondary winding (B). in series, one electric switch (C) representing a fast-acting electrical switch (1) electrically connected in parallel to winding (B), and a current output through the power terminal (T2), the fast-acting electrical switch (1) best seen in Figures 5 onwards according to the invention.
  • FIG 2 an electrical circuit diagram is presented, containing a power control circuit with a current input with power terminal (T1), comprising main winding (A) and secondary winding (B), connected in parallel. , an electrical switching key (C), electrically connected in series with winding (A), representing a fast acting electric switch (1), electrically connected in series with winding (A), and a current output through the power terminal (T2), the fast acting electric switch (1), best seen in Figures 5 onwards, according to the invention.
  • T1 current input with power terminal
  • B secondary winding
  • FIG 2a an electrical circuit diagram of a power control circuit is presented, comprising a current input with power terminal (T1), main winding (A) and secondary winding (B), connected in parallel, contemplating a capacitor (D) and the electric switching switch (C), connected in parallel with one of the windings (A, D), the switch (C) representing a fast acting electric switch (1), and a current output through the power terminal (T2), the key
  • FIG 3 is presented an electrical circuit diagram, containing a power control circuit with a power input (T1) current input comprising main winding (A), a resistor (BI), serially connected, or more than one resistor (BI) serially connected, an electrical switch (C) , representing a fast-acting electric switch (1), object of the invention, electrically connected in parallel to the resistor (BI), and a current output through the power terminal (T2), the fast-acting electrical switch (1), best seen in Figures 5 onwards according to the invention.
  • T1 power input
  • A main winding
  • BI resistor
  • C electrical switch
  • Figure 4 is a schematic representation of an operation graph of the complete motion of the components of the fast acting electric switch (1) object of the invention used in connection with a low voltage electrical switching device such as a contactor, relay, circuit breaker, or contactor-breaker or single-phase motor, for example, where from the initial state of the switch, moving to the final state, and its subsequent return to the initial state, the proportional force-to-force ratio is demonstrated. course of it.
  • a low voltage electrical switching device such as a contactor, relay, circuit breaker, or contactor-breaker or single-phase motor
  • Point (0) on the graph represents the initial operating moment of the "normally closed” fast-acting electric switch (1) containing a "full line” curve (CF1) of the opening displacement path of the electrical contacts, contemplating a first part with variable force where the electrical contacts remain closed, a trigger point (PI), where the opening of the electrical contacts occurs, where the force changes from positive to negative, a second part with variable force where the electrical contacts go to be open (CAI) on a slide overcurrent curve (SI), ending at the initial zero force starting point (P2) where a free course region (CL) begins at the final moment operating lines represented on the total course (CT) line.
  • CF1 full line
  • the return movement of the fast acting electric switch (1) components is represented by dashed lines, and the displacement between the lines represents some friction and also possible geometric differences of the central point of displacement of the springs in relation to the housing, contemplating a closing displacement path curve (CA2) of electrical contacts with a variable force third part, a reverse trip (P3) where the force shifts from negative to positive again and the electrical contacts close again, the components returning to position starting from point (PI) in a quarter with variable force (CF2) resulting from the residual force of the springs, said fast acting electric switch (1), best observed in constructive details from Figure 5.
  • CA2 closing displacement path curve
  • P3 reverse trip
  • FIGs 5 to 16 the construction of the fast acting electric key (1) of the invention, which is designed to achieve the above objectives, is shown in detail, where in the Figures of 5-10, the assembly process of the internal components is shown and in Figures 11-12 the fast acting electric switch (1) is shown assembled in perspective.
  • Figures 13 to 16 show the operating phases, starting from a phase with closed electrical contacts, through an intermediate phase, open and open at the end of the slide stroke.
  • the quick-acting electric switch (1) is mounted on a first preferred embodiment connected to a contactor electromagnetic actuator (4) and finally in Figures 19 to 20, the quick-acting electrical switch (1) is mounted in a second preferred embodiment connected to a single phase electric motor (17).
  • Figure 5 is an exploded perspective view of the components of a sliding bistable subset (9) comprising a slide (5) comprising a first part (5 ') and a second part (5 "), a bridge ( 6) of electrical contacts comprising movable electrical contacts (6b, 6d), positioning teeth (6a), side face (s) (6c) in addition to compression springs (8), the first part (5 ') of the a slide (5), constructed as a structural skeleton, comprising a guide rod (5a), an inner surface (5c) of the coupling coupling (5d), a sliding recess (5e), a locking seat (5b) and recesses (5f, 5g) used for locking a second part (5 "), constructed as a closing bridge, comprising recess engaging couplings (5h, 5i) of the first part (5 '), shoulders (5j, 5k) of stability and semi-spherical seats (5m) for the springs (8) forming the slide (5).
  • Figure 6 is a perspective view of a mounted sliding bistable subset (9), comprising the slide (5) and electrical contact bridge (6) seen in Figure 5, assembled with the aid of springs (8). where it can be observed that there is a gap (5n) between the first part (5 ') and the second part
  • FIG. 7 is an exploded top perspective view of a mounted sliding bistable subassembly (9) at the step of introduction into the housing (10), said pre-assembled housing (10) comprising contacts (10a, Fixed electrical 10f, connected to connecting terminals (10b, 10g), two tabs (10c) and two securing couplings (10k), plus one tab (10d), best seen in Figures 8,10 and 11, integral with the (1) electric fast acting wrench.
  • Figure 8 is an exploded bottom perspective view of a sliding bistable subassembly (9) mounted in the step of introduction into the housing (10), the bistable subassembly (9) comprising the recessed rod (5a) (5e) also seen in Figure 5, neck (5q) and a face (5p), to perform the sliding guide function of the sliding bistable subset (9) on the rail (10i) of the housing (10), the rod (5a) to be mounted through an opening (10e) and an opening (10f) for the introduction of the coupling coupling (5d), members of the quick-acting electric switch (1).
  • Figure 9 is an exploded top perspective view of a sliding bistable subassembly (9) mounted within the housing (10) and a cap (12) in the introduction step where the rod (5a) is view already introduced in the opening (10e) of the housing (10), and being provided in said housing (10), openings (10p) for securing and positioning the lid (12), to be realized through fixing pins (12a), best seen in Figure 10, which form the final assembly of the fast acting electric switch (1).
  • Figure 10 is an exploded bottom perspective view of a sliding bistable subset (9) mounted on the housing (10), similar to Figure 9, comprising in detail the couplings (10k), pins (10j) of fastening and positioning, rail (10i), opening (10f) and housing fixing openings (10m), coupling coupling (5d), slide sliding recess (5e) on rail (10i) housing (10), in the lid introduction step (12), comprising the lid securing pins (12a) in the openings (10p) of the housing (10), seen earlier in Figure 9, the seating seat ( 12c) of the rod (5a) of the slide (5) and the coupling (12d), which is associated with the couplings (12b) for locking the lid (12) in the opening (10e) and the openings (10m) of the housing (10) respectively, which form the final assembly of the fast acting electric switch (1).
  • Figure 11 is a perspective representation of the fast acting electric switch (1) object of the invention in a closed state of the electrical contacts (6b, 6d, 10a, 10f) (seen in Figures 5 and 7), where an inner surface (5c) and a slide guide rod (5a) are shown in an advanced position, and where for their attachment to an electrical apparatus, securing pins (10 j) and couplings (10k) are used. fixation.
  • Figure 12 is a perspective representation of the fast acting electric switch (1) object of the invention in an open state of the electrical contacts (6b, 6d, 10a, 10f) (seen in Figures 5 and 7), where an inner surface (5c) and a slide guide rod (5a) (seen in figures 5 and 6) are shown in position and where to fix it to an electrical appliance, fixing pins (10 j) and fixing couplings (10k) are used.
  • Figure 13 represents the components of the fast acting electric switch (1), in a top view without the cover (12) seen in Figures 9 and 10, where the slide (5) is shown in an advanced state and the movable electrical contact bridge (6b), 6d) is closed relative to the fixed electrical contacts (10a, 10f) pressure-mounted through the springs (8), mounted on the half-spherical slide seats (5m) (5) on the one hand, and on the teeth (6a) of the bridge (6) of electrical connection contacts on the other.
  • Figure 14 represents the components of the fast acting electric switch (1) in top view without the cover (12) seen in Figures 9 and 10, in intermediate state of movement of the contacts (6b, 6d, 10a, 1 Of) electric, where the slide (5) is presented in a state of movement towards the electric contact bridge (6), and said mobile electric contact bridge (6b, 6d) is closed in relation to the fixed electrical contacts (10a, 10f) maintained with some pressure through the springs (8) supported on the half-spherical seats (5m) of the slide (5) on one side, and the teeth (6a) of the contact bridge (6) on the other, approaching the tipping point (seen in the diagram in Figure 4) and opening the movable electrical contacts (6b, 6d) relative to the fixed electrical contacts (10a, 10f) of the electrical switch (1). fast action.
  • Figure 15 represents the components of the fast acting electric switch (1) in top view without the cover (12) seen in Figures 9 and 10, where the slide (5) is shown in a state and the movable electrical contact bridge (6b, 6d) is open relative to the fixed electrical contacts (10a, 10f) maintained with some pressure against the housing wall (10) through the springs (8) supported on the semi-spherical seats (5m) of the slide (5) on the one hand, and on the teeth (6a) of the electrical contact bridge (6) on the other.
  • Figure 16 represents the components of the fast acting electric switch (1) in top view without the cover (12) seen in Figures 9 and 10 at the end of the stroke where the slide (5) is shown in a rearward state and the movable electrical contact bridge (6b, 6d) is open relative to the fixed electrical contacts (10a, 10f) maintained with little or no spring pressure (8) supported on the seats (5m) of the slide (5) on the one hand, and on the teeth (6a) of the electrical contact bridge (6) on the other, this positioning state having the free field purpose (seen in the diagram in Figure 4) for tolerance of construction and operation of the device to the various applications.
  • the electrical contact bridge (6b), 6b, 6d is supported on the slide stability shoulder (5j), not allowing force to be transmitted to the inner surface (5c) of the coupling coupling (5d), seen Figures 5,6,8 and Figures 10 to 12.
  • Figure 17 is a side sectional representation of a first preferred embodiment of the fast acting electric switch (1) of the invention in a closed state of the contacts.
  • a actuator (4) contactor electromagnetic inactive state comprising a movable core (2) and a fixed core (3), comprising mainly a winding (3a), a winding (3b) and a permanent magnet (3c), related to the operation of the (1) electric fast acting wrench.
  • Figure 18 is a side sectional representation of a first preferred embodiment of the fast acting electric switch (1) object of the invention in an open state of the movable electric contacts (6b, 6d) with respect to the contacts (10a).
  • 10f) (as seen in Figures 15 and 16), coupled by couplings (10k) and pins (10j) seen in Figures 10 to 12, to receptacles (not shown) to the fixed core (3) of an actuator (4).
  • an electromagnetic contactor in active state comprising a movable core (2) and a fixed core (3), comprising mainly a winding (3a), a winding (3b) and a permanent magnet (3c) related to the operation of the switch ( 1) fast acting electric.
  • Figure 19 shows in side section a second preferred embodiment of the fast acting electric switch (1) associated with a single phase electric motor (17) comprising mainly main winding (16b) and capacitor (D) (not shown). , auxiliary winding (16a), a drive disc (11), connected to a centrifugal device (13), springs (13a), brackets
  • Figure 20 shows in side section a second preferred embodiment of the fast acting electric switch (1) associated with a single phase electric motor (17), comprising principally winding (16b), auxiliary winding (16a) and capacitor (D ) (not shown), a drive disc (11), connected to a centrifugal device (13), springs (13a), brackets (13b), cage rotor (15), rolling bearing cap (14) and said quick-acting electric switch (1) coupled to the disc (11) actuator of the electrical contacts (6b, 6d, 10a, 10f), seen in Figures 1 to 3, 5 and 7, and 13 to 16, comprising among other components shown above, an inner surface (5c) of the coupling coupling (5d) for the drive disc (11), where the single-phase electric motor (17) is shown in active position at rated rotation of the cage rotor (15) and the centrifugal device (13), the brackets (13b) together with the springs (13a) and the electric key (1) of fast acting which are under the action of centrifugal force and open position of the movable electrical contacts (6
  • the fast acting electric switch (1) object of the invention, detailed hereinafter, meets the desired aims of the invention to provide a switch device with fewer components, compacting the axial dimensions, simplifying their clamping, facilitating the assembly process and promoting direct integration with a relay, circuit breaker, contactor-breaker, single-phase electric motor, for example and also providing a locking coupling for the switch ( 1) fast acting electric, when compared to those existing in the state of the art, cited below, according to at least two embodiments.
  • introducing the sliding bistable subset (9) of movable electric contacts (6b, 6d) is introduced into the housing (10), comprising the contacts Fixed electrical connections (10a, 10f) connected to pre-assembled connection terminals (10b, 10g), two tabs (10c) and two securing couplings (10k), and where one tab (10d) will receive through an opening (10e) ) the rod (5a) of the slide (5), while the guide slide recess (5e) is pre-positioned to slide on the track (10i) of the advanced fast acting electric switch (1) , seen in Figure 11, or in the recessed state of operation, seen in Figure 12.
  • This sequence of assembly process steps is advantageous as the stability of the sliding bistable subset (9) of the pre-assembled movable electrical contacts (6b, 6d) is introduced into the housing (10) simply, reducing lead times. in assembly, and then snap-locking (12b, 12d) of the cover (12), at one go causes the rod (5a) of the slide (5) to move through the seat (12c) on the rod (5a) together the housing (10i) of the housing (10) and the sliding recess (5e) of the slide (5), allowing only axial movement of the slide between the open or closed position of the contacts (6b, 6d, 10a, 10f) and ensuring a robust assembly and low assembly time.
  • the fast acting electric switch (1) object of the invention is coupled to the moving electromagnet core (2) of a contactor electromagnetic actuator (4) seen in Figures 17 and 18. via an inner surface (5c) of the coupling coupling (5d) to the movable core (2), secured by couplings (10k) and securing pins (10j) (seen in Figures 10 to 12), and receptacles (not where, at startup, the contacts (6b, 6d, 10a, 10f) of the fast-acting electric switch (1) in a closed state allow the largest possible current flow through the electrical circuit to of the contactor electromagnetic actuator (4), which has the need for higher initial power and, after actuation, in order to save energy and better dimension of the magnetic field, the current flow must be reduced, and for this purpose it has been proposed three known techniques for connecting fast-acting electric switch (1) according to the invention, the first technique, as seen in Figure 10, where at startup, the main winding (A) and secondary winding (B) can be electrically connected in series together
  • the fast acting electric switch (1) is coupled to a single phase electric motor (17) as seen in the diagram. representative of the electrical circuit of Figure 2a, where for its start, it is used an auxiliary winding (16a) and capacitor (D) (not shown), added to a main winding (16b) and a centrifugal device (13) for disconnecting this auxiliary winding (16a) and capacitor (s) (D) (not shown) after starting, as shown for example in patent PI0404228-0, and others related to state of the art.
  • the centrifugal device (13) comprising a pair of springs (13a) and a pair of supports (13b) centrifugally holding the springs (13a) and brackets (13b) together, attached to the pivot shaft (not shown) of the cage rotor (15), where the brackets (13b), by centrifugal force travel radially and spring force (13a) are overcome, causing the drive disc (11) to move axially toward the cage rotor (15) when the rated speed of the motor cage rotor (15) is reached (17) single-phase electric motor, and together with said drive disc (11), displaces the coupling coupling (5d) through its internal coupling surface (5c) of the fast acting electric key (1) object of the invention coupled to it (11) single-phase electric motor (17) actuator disc and drive bearing cover (14) Disconnecting the auxiliary winding (16a) and capacitor (s) (D) (not shown
  • the bistable subset (9) allows for advantageous axial compression of the fast acting electric switch (1) object of the invention and the direct coupling in at least two preferred embodiments, either directly to the fixed core (3) of the electromagnetic actuator (4) of a contactor, or directly to the drive disk (11) of the centrifugal device (13) and to the cage rotor (15) of a single-phase electric motor (17) through the couplings (10k) and pins (10j) (seen in Figures 10 to 12), which are sized to fit the receptacles (not shown of the rolling bearing cap (14) of said single-phase electric motor (17), maintaining the same building principle of the internal components of the fast acting electric switch (1).
  • the concept of the slide (5) of the bistable subset (9) allows the preferred embodiment of a gap (5n) between the first part (5 ') and the second part (5 ") of the slide (5), for the accommodation of the side (6c) side (s) of the electrical contact bridge (6), allowing the coupling coupling (5d) of the the first part (5 ') of the slide (5) is axially transposed with respect to the positioning of the electrical contact bridge (6) between its backward or forward position, and thus the design allows for reduction in the axial length of the electrical switch (1) since the effective positioning of said coupling coupling (5d) is axially independent of the electrical contact bridge (6) and can be variably closer or further from the rod (5a) according to the desired dimension, allowing freedom to apply to multiple devices.
  • the invention provides a fast-acting electric switch (1) for reducing the power consumption under a switchable electrical circuit, where together with the aforementioned concepts it has a proportional force-stroke ratio, represented in Figure 4, containing a "full line” curve (CF1) of contact opening displacement path
  • (10a, 10f, 6d, 6b) electric contemplating a first part (CF1) with variable force where the electrical contacts (10a, 10f, 6d, 6b) remain closed, a trigger point (PI), where the mobile electric contacts (6d, 6b) open, where the force changes from positive to negative, a second part with variable force where the mobile electric contacts (6d, 6b) pass to be open (CAI) on a slide overcurrent curve (SI), ending at the zero-force starting point (P2) where a free-stroke region (CL) at the end of operation represented on the full stroke line ( CT), which guarantees the stability of operation when opening and closing the electrical contacts (10a, 10f, 6d, 6b).

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  • Manufacturing & Machinery (AREA)
  • Slide Switches (AREA)

Abstract

La présente invention concerne une clé (1) électrique à action rapide, comprenant un sous-ensemble (9) bistable, comportant un coulisseau (5), des ressorts (8) agissant sur un pont (6) de contacts électriques pour ouvrir ou fermer les contacts (6b, 6d, 10a, 10f) électriques, lesquels font partie d'un circuit électrique. À partir de la position inactive d'un actionneur (4) électromagnétique d'un contacteur, relais, disjoncteur ou contacteur-disjoncteur ou moteur (17) électrique monophasé, entre autres, les contacts (6b, 6d, 10a, 10f) électriques de la clé (1) électrique à action rapide sont en position fermée, et lorsqu'elle atteint la position active, les contacts (6b, 6d) électriques mobiles sont commutés en position ouverte. Ledit actionneur (4) électromagnétique comprend des enroulements (A, B, 3a, 3b), un noyau (2) mobile et un noyau (3) fixe, entre autres, le coulisseau (5) du sous-ensemble (9) bistable étant accouplée au noyau (2) mobile de l'actionneur (4) électromagnétique par l'intermédiaire de la surface (5c) interne de l'organe (5d) d'accouplement, ou associé à un moteur (17) électrique monophasé, ledit coulisseau (5) du sous-ensemble (9) bistable pouvant être accouplé directement au disque (11) actionneur du dispositif (13) centrifuge du moteur (17) électrique monophasé par l'intermédiaire de la surface (5c) interne de l'organe (5d) d'accouplement.
PCT/BR2017/050107 2017-05-08 2017-05-08 Clé électrique à action rapide et procédé de montage de clé électrique à action rapide WO2018204997A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/BR2017/050107 WO2018204997A1 (fr) 2017-05-08 2017-05-08 Clé électrique à action rapide et procédé de montage de clé électrique à action rapide
BR112019025093-0A BR112019025093A2 (pt) 2017-05-08 2017-05-08 chave elétrica de ação rápida e processo de montagem de chave elétrica de ação rápida

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BR2017/050107 WO2018204997A1 (fr) 2017-05-08 2017-05-08 Clé électrique à action rapide et procédé de montage de clé électrique à action rapide

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WO2018204997A1 true WO2018204997A1 (fr) 2018-11-15

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WO (1) WO2018204997A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918544A (en) * 1957-07-02 1959-12-22 Cutler Hammer Inc Snap switches
FR2440067A1 (fr) * 1978-10-27 1980-05-23 Hardellet Daniel Interrupteur electrique a action brusque
US5360954A (en) * 1993-01-19 1994-11-01 Preh-Werke Gmbh & Co. Kg Push button switch
CN102074390A (zh) * 2010-09-01 2011-05-25 胡建强 防冲顶限位装置
EP2800116A1 (fr) * 2011-12-26 2014-11-05 Seari Electric Technology Co., Ltd. Structure de contact d'appareil électrique à basse tension
CN105336517A (zh) * 2015-12-04 2016-02-17 贵州华阳电工有限公司 集成开关瞬动转换机构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918544A (en) * 1957-07-02 1959-12-22 Cutler Hammer Inc Snap switches
FR2440067A1 (fr) * 1978-10-27 1980-05-23 Hardellet Daniel Interrupteur electrique a action brusque
US5360954A (en) * 1993-01-19 1994-11-01 Preh-Werke Gmbh & Co. Kg Push button switch
CN102074390A (zh) * 2010-09-01 2011-05-25 胡建强 防冲顶限位装置
EP2800116A1 (fr) * 2011-12-26 2014-11-05 Seari Electric Technology Co., Ltd. Structure de contact d'appareil électrique à basse tension
CN105336517A (zh) * 2015-12-04 2016-02-17 贵州华阳电工有限公司 集成开关瞬动转换机构

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