EP0184026A2 - Interrupteur de protection pour moteur - Google Patents

Interrupteur de protection pour moteur Download PDF

Info

Publication number
EP0184026A2
EP0184026A2 EP85114301A EP85114301A EP0184026A2 EP 0184026 A2 EP0184026 A2 EP 0184026A2 EP 85114301 A EP85114301 A EP 85114301A EP 85114301 A EP85114301 A EP 85114301A EP 0184026 A2 EP0184026 A2 EP 0184026A2
Authority
EP
European Patent Office
Prior art keywords
rocker
motor protection
protection switch
retraction device
outside
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP85114301A
Other languages
German (de)
English (en)
Other versions
EP0184026A3 (en
EP0184026B1 (fr
Inventor
Peter Hilfiker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Switzerland GmbH
Original Assignee
Sprecher und Schuh AG
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 Sprecher und Schuh AG filed Critical Sprecher und Schuh AG
Priority to AT85114301T priority Critical patent/ATE63790T1/de
Publication of EP0184026A2 publication Critical patent/EP0184026A2/fr
Publication of EP0184026A3 publication Critical patent/EP0184026A3/de
Application granted granted Critical
Publication of EP0184026B1 publication Critical patent/EP0184026B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • 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
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches

Definitions

  • the invention relates to a motor protection switch according to the preamble of claim 1.
  • the object of the present invention is to provide an economically advantageous motor protection switch of the type mentioned in the introduction, in which the TRIP position can be simply canceled or switched on.
  • a motor protection switch according to claim 1 is proposed.
  • the TRIP position is switched on. After each trip, the motor protection switch switches to the TRIP position. From there, the OFF position must first be reached manually before the motor protection switch can be switched on again.
  • the motor protection switch switches off after each trip without taking the TRIP position. The motor protection switch can be switched on again from the OFF position without loss of time.
  • a rocker that is operatively connected to the linkage by the actuating member, like a balance beam, can be pivoted to one side or the other, into the ON or OFF position, the retraction device acting on this rocker.
  • This arrangement enables an economically particularly advantageous and simple solution to be achieved.
  • the retraction device can consist of a return spring connected to the rocker at one end, the other fastening point on the housing of which can be adjusted from the outside from the first to the second position, the rest position of the return spring in the first position in the TRIP position and in the second position outside or lies at the limit of the ON-OFF area of the rocker.
  • the fastening point of the return spring on the housing is designed to be displaceable, as a result of which an economically advantageous solution to the task can be achieved.
  • the retraction device is advantageously formed from a leg spring with two resilient legs and from a pin lying between the legs and abutting on one of these legs when the actuating member moves, the rest position of the pin between the prestressed legs being adjustable from the outside either in the TRIP position or is at the limit of the ON-OFF area of the motor protection switch.
  • the leg spring can be placed around the pivot axis of the rocker and the pin can be attached to the rocker outside of the pivot axis, one leg of the leg spring being pushed away by the pin and the other leg resting against an externally changeable stop supported on the housing.
  • leg spring can also be arranged on the rocker with essentially radially oriented legs outside the pivot axis and the pin can be attached to the housing so that it can be changed from the outside, with the two legs on the molded on the rocker between the prestressed legs of the leg fields when the pin is at rest The stops can be pushed away by the pin.
  • the housing of the motor protection switch is represented by triangles hatched on one side as support points and by parallel lines hatched on both sides as sliding guides of the housing. - Circles indicate joints.
  • the motor protection switch shown has a fixed contact pair 1 which can be connected to supply lines and a contact pair 2 which is movable relative thereto.
  • a pair of switch buttons with a switch button 3 and a switch button 4 is provided as an externally visible actuating element, which act on a linkage 5.
  • the rocker 10 which can be operated by the control buttons 3, 4 is mounted at 100 on the housing and is pushed into its central position (corresponding to its TRIP position in FIGS. 3 and 4) by its return spring 11. In Figures 1 and 2, the TRIP position is canceled. The attachment point on the housing side is shifted to the left. The return spring 11 in the activated TRIP position is shown in dashed lines in these figures.
  • the rocker 10 is in operative connection with the knee joint 15 of the knee joint brackets 12 above the plunger 23 and the sliding guide 22 attached to it.
  • the tab 13 of the knee joint tabs 12 is connected to the angular contact actuation lever 18 via the end joint 16.
  • the contact actuating lever 18 is pivotally mounted on the housing bearing 17 and is pulled by the spring 180 against the stop 181 into the disconnected position of the contacts 1, 2 (FIGS. 1, 3 and 4).
  • the tab 14 of the knee joint tab 12 is connected to the pawl lever 21 via the joint 19.
  • This pawl lever 21 is pivotally mounted on the housing about the bearing 20 and is held in the latched position (FIGS. 1 and 2) by the pawl 6 against the spring 210 on or close to the stop 211.
  • a bimetallic element is indicated as an overcurrent release 7, which via a plunger 70 can actuate the pawl 6 without thereby moving the trigger linkage 81 of the short-circuit release 8.
  • the short-circuit release 8 is an electromagnetic device indicated by the relay symbol, the armature of which actuates the release linkage 81 when a short-circuit current flows.
  • the trigger linkage 81 can trigger the pawl 6 without moving the plunger 70 of the overcurrent release 7.
  • the motor protection switch can be switched on by pressing the ON button 3 from the OFF position (FIG. 1) to the ON position (FIG. 2), its linkage 5 from the OFF position shown in FIG. 1 to the The ON position shown in Fig. 2 passes.
  • the rocker 10 is tilted clockwise and the knee joint straps 12 are moved from their OFF kink position to their ON kink position via the stretched position, not shown, in which they remain.
  • only the contact actuation lever 18 together with contacts 2 is moved, because the knee joint brackets 12 are articulated with the knee joint 15 in the sliding guide 22 and with the end joint 19 on the pawl lever 21 held immovably (between the stop 211 and the pawl 6).
  • the device is switched off by pressing the OFF button 4, starting from the ON position in FIG. 2 and moving to the OFF position in FIG. 1.
  • the motor protection switch If the motor protection switch is now in the ON position in FIG. 2, it can reach one of the two TRIP positions shown in FIGS. 3 and 4 by tripping, provided the TRIP position is switched on.
  • Overcurrent release (FIG. 3): An overcurrent heats the overcurrent release 7, which releases the pawl 6 against the spring 60 via its plunger 70. After the overcurrent release 7 has cooled (its circuit is interrupted when it is released), the pawl 6 returns to the rest position, pulled by the spring 60.
  • the TRIP position of the control buttons 3, 4 indicates tripping.
  • the notched pawl lever 21 can move from the spring 210 from the latching position shown in FIG. 2 to the release position shown in FIG. 3.
  • the end joint 19 is moved to the right and the return spring 11 can pull the rocker 10 into the TRIP position via the plunger 23.
  • the knee joint 12 is no longer supported by the end joint.
  • the spring 180 can the contact actuating lever 18 together with contacts 2 in the AUS- Position. The contact operating lever 18 is now missing the support on the end joint 16.
  • Short-circuit release (FIG. 4): If a short-circuit occurs, the short-circuit release 8 is activated, which causes the pawl actuation linkage 81 to move and the pawl 6 to be released. The process described above follows.
  • the switch-on standby position corresponds to the OFF position in FIG. 1.
  • the retraction device shown schematically in FIGS. 1 to 4 consists of a return spring 11 attached at one end to the rocker 10.
  • the other end of the return spring 11 is attached to the housing on a slide 9 which can be adjusted from the first position I to the second position II.
  • the TRIP position In the first position I (Fig. 3, 4) the TRIP position is switched on and in the second position II (Fig. 1, 2) it is canceled.
  • the rest position of the return spring 11 is outside or at the limit of the ON-OFF area of the rocker.
  • FIGS. 5, 6, 7 and 8 show a further embodiment of the retraction device.
  • This retraction device is formed from a leg spring 110 with two resilient legs and from a pin 114 located between the legs.
  • the leg spring 110 is placed around the pivot axis 100 of the rocker 10.
  • the pin 114 is attached to the rocker 10 outside the pivot axis 100 on a secondary arm.
  • a stop 113 is attached to a lever 116 mounted on the housing in the pivot bearing 115. In the first position I shown in FIGS. 7 and 8, the stop 113 lies between the relaxed legs of the leg spring 110 with the pin 114 in the TRIP position.
  • the pin 114 and thus also the rocker 10 are resiliently retained in the TRIP position.
  • the motor protection switch When the switch is ready to be switched on, the motor protection switch must be brought into the OFF position by pressing the switch button 4 and swiveling the rocker 10 in a counterclockwise direction. This can be done by the pin 114 attached to the rocker 10 pushing the left leg of the leg spring 114 in FIGS. 7 and 8 away from the stop 113 to the left.
  • the other processes in the motor protection relay are described above.
  • FIGS. 9, 10, 11 and 12 show a further variant of the retraction device, only the rocker 10 and the retraction device being shown in these figures.
  • the remaining parts of the motor protection switch are identical to the parts shown in Figures 1 to 4.
  • the leg spring 111 is arranged on the rocker 10 with essentially radially oriented legs outside the pivot axis of the rocker 10.
  • the leg spring 11 can only be a U-shaped spring or a helical spring having at least one turn on the leg base.
  • the legs of the spring 111 are in their pretensioned position against the non-displaceable stops 117, 118 formed on the rocker 10.
  • the pin 119 lying between the legs of the leg spring 111 is fastened to the housing from the first position I (FIGS.
  • the TRIP position can also be canceled with this retraction device by pushing the pin 119 from the first position I (FIGS. 11, 12) to the left into the second position II (FIGS. 9, 10).
  • This position II is shown in dashed lines in FIGS. 11 and 12.
  • the pin 119 lies between the prestressed legs of the leg spring 111 at the limit of the ON-OFF region of the rocker 10. The TRIP position is thus eliminated.

Landscapes

  • Breakers (AREA)
  • Lock And Its Accessories (AREA)
  • Protection Of Generators And Motors (AREA)
  • Stopping Of Electric Motors (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Control Of Direct Current Motors (AREA)
EP85114301A 1984-12-06 1985-11-09 Interrupteur de protection pour moteur Expired - Lifetime EP0184026B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85114301T ATE63790T1 (de) 1984-12-06 1985-11-09 Motorschutzschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5796/84A CH666139A5 (de) 1984-12-06 1984-12-06 Motorschutzschalter.
CH5796/84 1984-12-06

Publications (3)

Publication Number Publication Date
EP0184026A2 true EP0184026A2 (fr) 1986-06-11
EP0184026A3 EP0184026A3 (en) 1989-03-08
EP0184026B1 EP0184026B1 (fr) 1991-05-22

Family

ID=4299449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114301A Expired - Lifetime EP0184026B1 (fr) 1984-12-06 1985-11-09 Interrupteur de protection pour moteur

Country Status (6)

Country Link
US (1) US4686599A (fr)
EP (1) EP0184026B1 (fr)
JP (1) JPH0795421B2 (fr)
AT (1) ATE63790T1 (fr)
CH (1) CH666139A5 (fr)
DE (1) DE3582920D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2659791A1 (fr) * 1990-03-16 1991-09-20 Sprecher & Schuh Ag Dispositif interrupteur auxiliaire pour un disjoncteur de protection de moteur a commande manuelle.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5630009A (en) * 1992-06-24 1997-05-13 Ford Motor Company Method and apparatus for controlling a DC electric motor
JP4962827B2 (ja) * 2004-05-20 2012-06-27 育男 大下 プランジャ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416108A (en) * 1966-03-18 1968-12-10 Ite Circuit Breaker Ltd Automatic relatching circuit breakers
US4081852A (en) * 1974-10-03 1978-03-28 Westinghouse Electric Corporation Ground fault circuit breaker
US4090158A (en) * 1975-12-24 1978-05-16 Komao Oeda Circuit breaker
JPS5721035A (en) * 1980-07-15 1982-02-03 Matsushita Electric Works Ltd Trip displaying mechanism for circuit breaker
CH662210A5 (de) * 1982-09-28 1987-09-15 Sprecher & Schuh Ag Motorschutzschalter.
JPS5999636A (ja) * 1982-11-30 1984-06-08 松下電工株式会社 リモ−トコントロ−ル式回路しや断器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2659791A1 (fr) * 1990-03-16 1991-09-20 Sprecher & Schuh Ag Dispositif interrupteur auxiliaire pour un disjoncteur de protection de moteur a commande manuelle.

Also Published As

Publication number Publication date
JPS61138425A (ja) 1986-06-25
CH666139A5 (de) 1988-06-30
EP0184026A3 (en) 1989-03-08
EP0184026B1 (fr) 1991-05-22
JPH0795421B2 (ja) 1995-10-11
US4686599A (en) 1987-08-11
DE3582920D1 (de) 1991-06-27
ATE63790T1 (de) 1991-06-15

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