WO1985003382A1 - Mecanisme mecanique et electrique combine d'interverrouillage - Google Patents

Mecanisme mecanique et electrique combine d'interverrouillage Download PDF

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Publication number
WO1985003382A1
WO1985003382A1 PCT/US1984/000082 US8400082W WO8503382A1 WO 1985003382 A1 WO1985003382 A1 WO 1985003382A1 US 8400082 W US8400082 W US 8400082W WO 8503382 A1 WO8503382 A1 WO 8503382A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
movable
operators
interlock
contacts
Prior art date
Application number
PCT/US1984/000082
Other languages
English (en)
Inventor
Gerd C. Boysen
Patrick S. Murray
Marquis B. Robinson
Original Assignee
Allen-Bradley Company
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 Allen-Bradley Company filed Critical Allen-Bradley Company
Priority to JP50097884A priority Critical patent/JPH0724176B2/ja
Priority to AT84900914T priority patent/ATE30806T1/de
Priority to AU25707/84A priority patent/AU564544B2/en
Priority to US06/581,742 priority patent/US4513181A/en
Priority to EP84900914A priority patent/EP0168395B1/fr
Priority to BR8407271A priority patent/BR8407271A/pt
Priority to PCT/US1984/000082 priority patent/WO1985003382A1/fr
Priority to DE8484900914T priority patent/DE3467460D1/de
Priority claimed from US06/581,742 external-priority patent/US4513181A/en
Publication of WO1985003382A1 publication Critical patent/WO1985003382A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H01H50/323—Latching movable parts mechanically for interlocking two or more relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2016—Bridging contacts in which the two contact pairs commutate at substantially different moments
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H01H50/323—Latching movable parts mechanically for interlocking two or more relays
    • H01H2050/325—Combined electrical and mechanical interlocking, e.g. usually for auxiliary contacts

Definitions

  • both of the latter-mentioned assemblies there is an provided arrangement for seating the self-contained unit between adjacent contactors.
  • electrical interlocking required separate auxil-sammlungy contacts individually attached to the contactors, requiring considerable space with extra wiring for connection of these auxiliary switches with the various terminals of the individual contactors.
  • the present invention provides a unitary, self- contained interlock mechanism of simplified construc- tion, comprising a container of minimal width requiring minimal spacing between adjacent circuit controllers, in addition to the elimination of separate auxiliary con ⁇ tact devices heretofore required for electrical inter ⁇ locking purposes.
  • the combination electrical and mechanical interlock mechanism includes, in its pre ⁇ ferred construction, not only pivotally mounted opera ⁇ tors individually defining a physical blocking formation for preventing simultaneous operation of movable members of the respective contactors, but further confines the electrical interlock contacts entirely within the container housing to be operated concurrently with the mechanical operators.
  • the electrical interlock contacts are preferably mounted on each of the respective opera ⁇ tors in a manner which permits a movable contact member to move from a normally closed contact position in an electrical interlocking circuit to an alternative open contact position concurrently with the closure of a movable holding contact in conjunction with the actua- tion of a movable element located on a reversing motor starter contactor.
  • an object of the present inven ⁇ tion to provide a combination electrical and mechanical interlock mechanism for a pair of circuit controllers, wherein the mechanism is responsive to movement of certain individual controller elements that normally move in the same direction, and which mechanism further accomplishes its interlocking function by means of a pair of mechanical interlocking operators, each having an integral blocking formation to physically prevent the controllers from being closed simultaneously.
  • the interlock mechanism is housed in a self-contained, relatively thin, unit preferably disposed between the controllers which also contains a first and a second movable bridging contact, each bridging contact respec ⁇ tively operated in conjunction with the operation of the mechanical interlocking operators from a first normally closed circuit position with respect to a pair of stationary interlocking contact members. Initial closure of an interlocking electrical circuit is thereby accomplished in conjunction with normally open power
  • _ ⁇ pole contacts respectively operated by a movable element on a respective ' one of said controllers to prevent simultaneous closure mechanical closure of a similar element of the other controller.
  • Another object of the present invention is to provide an interlock mechanism including a relatively thin, self-contained enclosure adapted to be positioned between two adjacent circuit controllers, and which mechanism incorporates mechanical interlocking operators arranged to individually actuate the movable contact of an electrical interlock circuit auxiliary contact also contained within the said enclosure, and with this object in mind, to make available room on each control- ler for auxiliary devices which were formally mounted apart from the respective controllers.
  • a further object of the present invention is to provide a self-contained unitary interlock mechanism containing pivotally supported, interlocking mechanical operators having respective blocking formations to prevent simultaneous actuation of respective circuit controllers and which operators include means for engaging elements on the respective circuit controllers movable in the same direction, and which interlock mechanism further includes electrical interlocking contact assemblies within the self-contained unit, each interlocking contact assembly having respective movable bridging contact members supported by a respective operator and alternatively movable from a normally closed circuit position to a normally open position depending upon the operation of a particular one of a pair of circuit controllers operating in conjunction therewith.
  • Still another object of this invention is to provide a combination electrical and mechanical inter ⁇ lock mechanism for a pair of circuit controllers, having in addition to a pair of alternatively movable mechan ⁇ ical interlocking operators a pair of no.rmally closed electrical interlocking contact assemblies respectively operated concurrently with the mechanical operation of respective mechanical interlocking operator and a second pair of normally open electrical holding circuit contact assemblies also operated concurrently with alternative actuation of said mechanical and electrical interlocking operators and contact assemblies, and to locate said mechanical operators and said pairs of contact assem ⁇ blies in a self-contained unitary enclosure, * to thereby conserve space normally required by separate, contact assemblies located apart from said mechanical interlock- 5 ing operators.
  • Fig. 1 is a schematic diagram illustrating a typical wiring circuit for a pair of electrically interlocked circuit controllers, such as reversing motor
  • Fig. 2 is a longitudinal view of the mechanism a first embodiment of the present invention preferably housed in a transparent enclosure, and illustrating the initial operating position of the operating elements of 0 the combined electrical circuit interlocking contacts operated by respective mechanical interlocking operators for motor starters contactors and wired in accordance with the diagram of Fig. 1.
  • Fig. 3 is the same view as Fig. 2, but with the 5 elements shown in their respective second, alternative operating position.
  • Fig. 4 is an end view taken from the right side of the views of Figs. 2 and 3 of the interlocking mechan ⁇ ism.
  • Fig. 5 is a view similar to the view of Fig. 2, illustrating another embodiment, wherein the respective ciruit holding contact assemblies of respective circuit controllers are also contained within a unitary housing along with the mechanical and electrical interlocking elements of the comination interlock mechanism of this invention.
  • interlock mechanism 10 (also indicated in phantom outline in Fig. 1) of the present invention includes its operating components confined within the chamber or cavity 11 of a two-part, ⁇ referably transpar ⁇ ent, housing or enclosure 12.
  • inter- lock mechanism 10 provides a relativally thin, self- contained unit capable of being mounted between adja ⁇ cent motor starter contactors (not specifically shown).
  • Typical controllers are described and claimed in U.S. Patent 3,962,658 assigned to the assignee of the present invention.
  • the reversing motor starter assembly, combin ⁇ ed with an interlock mechanism is preferably arranged in a manner quite similar to that disclosed in the DiMarco U.S. Patent 3,210,491.
  • Reversing, electromagnetically operated circuit controllers, or motor starter contactors are illustrat ⁇ ed symbolically in the view of Fig. 1, and identified generally by reference characters R (reversing) and F (forward), respectively, and are operated by control coils RCR and FCR.
  • the motor reversing control con- tactor R by means of its coil RCR, operates appropri ⁇ ate, normally open, power pole contacts Rl, R2 and R3, respectively and the forward motor control coil FCR of contactor F actuates normally open power pole ' s Fl, F2 and F3, respectively.
  • Both control coils RCR and FCR may be energized by means of a manually operated, momentary pushbutton station PS with appropriately identified normally open contacts FC and RC for forward and reverse motor operation and normally closed contact SC, which provides means for stopping the motor M.
  • the housing 12 of the mechanism 10 comprises identically formed, mating sections 12a and 12b, both preferably molded of trans ⁇ parent, plastic insulating material.
  • the mating sec- tions 12a and 12b are joined together to provide an enclosed construction by conventional means, such as heat staking, riveting or other well-known attaching means.
  • the sections or halves 12a and 12b are heat staked at the areas indicated by the reference numeral 13.
  • the sections 12a, 12b are preferably identical for ease in assembly and manufacture, as well as minimal cost con ⁇ siderations.
  • the sections 12a, 12b are preferably molded from transparent material in order to provide a convenient means for orienting internally located components during assembly of the mechanism 10 and also for convenience in locating the mechanism between adjacent contactors (not shown).
  • Fig. 3 the component parts of the interlock mechanism 10 have been actuated to motor reversing position. Operation • will be explained later in connection with Fig. 1.
  • the elements 14 are not considered to be part of the present invention, but are provided for lateral support with cooperating elements of a particular circuit controller design (not shown).
  • the present interlock mechanism finds ultimate cost advantage and simplicity of inventory and manufacturing tooling, fixturing and assembly by providing its various components as identi ⁇ cally configured parts.
  • the housing sections 12a and 12b are identical, and are arranged to define the chamber, or cavity 11 in which there is disposed identically formed operators 20a and 20b, pivotally supported at 21a and 21b by means of laterally extending pivot projections 22a and 22b.
  • the sidewalls of respective housing sections 12a and 12b are each provided with elongated openings 23 for permitting unobstructive movement of laterally projecting operating handles in the form of steel pins 24a and 24b, press fit into an opening in the embossed area 25 of the respec ⁇ tive operators 20a and 20b.
  • the operators 20a and 20b are respectively provided with cooperating blocking formations comprising integrally formed projec ⁇ tions 26a and 26b each respectively defining blocking , cam surfaces 27a, 27b and 28a, 28b.
  • the external cam surface 27b and 28a of the " operators 20b and 20a are shown in Fig. 3 in blocking * formation, simultaneously with the operation of a reversing contactor R (See Fig. 1) to circuit closed position by means of its control coil RCR responsive to momentary manual closure of pushbutton contact RC.
  • the normally open pole line contacts Rl, R2, R3 will have been mechanically moved to their respective closed position by conventional elec ⁇ tromagnetic operation of the relay RCR to complete the current to start the motor M in its reverse direction.
  • the present invention provides a novel combination of electrical interlock contact assemblies operated conjointly with the mechanical operating members 20a and 20b. It is preferable to mount the spanner or bridging movable contact members 30a and 30b of each interlock contact assembly directly on, or supported by, a respective operator 20a and 20b.
  • the essence of novelty in this arrangement provides minimal space requirements in the assembly of adjacent reversing contactors or electrical controllers, with both the operator and the contacts housed together in a self-contained unit.
  • the identically formed bridging contact spanners 30a and 30b are slidably retained within the confines of an L-shaped, integrally formed contact retainer portions 31a, 31b of the respective operators 20a and 20b.
  • a biasing spring 32 provides a means of biasing a respec ⁇ tive spanner 30a, 30b towards circuit closed position relative to its stationary contact pairs 33a or 33b.
  • the respective ones of each of the stationary contact pairs 33a and 33b are preferably identical in configura ⁇ tion, and each are provided with threaded openings for receiving identical terminal screw assemblies 34. It will be apparent that other means of termination, such
  • OMPI as by means of stab type terminals may be provided when required by a customer-user.
  • Fig. 2 depicts the operating compo- nents of the interlock mechanism 10 in the normal or initial operating position with both of the interlock contact spanners 30a, 30b in circuit closed position with respect to stationary contact pairs 33a and 33b.
  • contactors or controllers R and F in the normal operating position with the motor M stopped, contactors or controllers R and F have their respective motor power poles Rl, R2, R3 and Fl, F2, F3 in normal circuit open position.
  • the three-phase motor M is electrically connected to these respective power poles.
  • the pushbutton contact assemblies FC and RC are shown in their normally open, manual operating position with the start button contact SC in normally closed position.
  • the normally open holding contact assembly RA will be closed concurrently with closure of power pole contacts Rl, R2 and R3.
  • holding contact RA When closed, holding contact RA will act as a circuit holding contact upon manual release of momentary pushbutton contact RC, to thereby maintain the circuit through the control coil RCR of reversing starter R until such time as the normally closed stop button contact SC is depres ⁇ sed to de-energize the circuit of Fig. 1.
  • the mechanical interlock operators 20a and 20b will be pivotally moved by means of handle 24b engaging a moving element (not shown) on the contactor R to the position shown in Fig. 3 and simultaneously with energization of the reversing control coil RCR.
  • Fig. 1 that the motor may be stopped and later restarted in a forward direction upon momentary manual operation of the pushbutton contacts SC which opens the circuit through conductors 44 and 45, and thereby permit the control coil RCR to open its pole line contacts Rl, R2, R3 and holding contact RA. Operation of the motor in the forward direction is accomplished in similar manner as that of reverse operation.
  • the forward contactor coil FCR will be energized via conductors 44, normally closed contact SC of pushbutton PS, conductor 45 to power line terminal FL1 on one side of the line, and via conductors 46 and 47, the interlock contact 30b, normally bridging its stationary contacts 33b, the normally closed contact on overload coil relay contact OLR and conductor 43 to power line terminal RL2 on the return side.
  • the unitary construction of the present embodiment operates in the same manner as previously described in connection with the embodiment of Figs. 2-4, inclusive. That is, a set of normally closed electrical interlock ⁇ ing contact assemblies comprising the movable bridging contacts 30a and 30b are also normally closed as shown in the view of Fig. 5 to complete the circuit through stationary Contacts 33a and 33b, respectively. This initial position was also discussed in connection with the view of Fig. 2. Also, the components comprising the terminals 34 are preferably identically formed, as are the spanners 30a and 30b and respective stationary contacts 33a and 33b.
  • the present embodiment features removal of the normally open holding contacts RA and RF from the position shown in the Fig. 1 circuit drawing to be included within the area defined by the phantom outline 10.
  • the embodiment of the invention as shown in Fig. 5, provides for the addition of normally open holding contact assemblies 130a, 133a and 130b, 133b within the confines of the housing 112.
  • Each of the respective terminal connections 34, and 134a, 134b are offset laterally relative to its respective adjacent upper contact set to permit insertion of conventional screwdrivers for completing termination to electrical connections (not shown).
  • the present embodiment pro ⁇ vides for terminations .134a and 134b which have several components identical in nature, such as the terminal screws, pads and the like, but the stationary contact portions 133a and 133b have been elongated when compared to 33a and 33b, and 134b is of a longer construction than 134a to permit the aforementioned offset construc- tion for unincumbered reception of screwdrivers, Allen wrenches or other fastening tools.
  • 131b provide means for slidably retaining movable spanners or contacts 130a and 130b, respectively. These spanners 130a, 130b are identical with the spanners 30a and 30b and are retained in the same manner by the integrally formed portions 131a and 131b as previously
  • a biasing spring 132 normally biases the respective spanner 130a, 130b towards closed position with respect to its stationary contacts 133a, 133b. It will be noted that this contact assembly com ⁇ prising the contacts 130a, 133a and 130b, 133b are normally open as shown, and are the physical embodiment of holding contacts RA and RB of Fig. 1, respectively.
  • auxiliary contacts may be contained within the unitary housing 112.
  • the housing 112 is prefer ⁇ ably comprised of two mating halves, as in the case of the housing 12 for economics in construction and ease in assembly.
  • the mating members comprising the housing are also preferably transparent as above described in connection with the housing 12.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Push-Button Switches (AREA)
  • Lock And Its Accessories (AREA)

Abstract

Interverrouillage électrique et mécanique combiné destiné à des contrôleurs de circuits électriques. Des contacts auxiliaires d'interverrouillage électrique sont actionnés simultanément par les opérateurs d'interverrouillage mécanique et des ensembles de contacts d'interverrouillage auxiliaire. Les opérateurs d'interverrouillage mécanique et électrique sont tous contenus de préférence dans un boîtier commun.
PCT/US1984/000082 1984-01-23 1984-01-23 Mecanisme mecanique et electrique combine d'interverrouillage WO1985003382A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP50097884A JPH0724176B2 (ja) 1984-01-23 1984-01-23 機械電気的組み合わせ連動機構
AT84900914T ATE30806T1 (de) 1984-01-23 1984-01-23 Kombinierte mechanische und elektrische vorriegelungsvorrichtungen.
AU25707/84A AU564544B2 (en) 1984-01-23 1984-01-23 Combination mechanical and electrical interlock mechanism
US06/581,742 US4513181A (en) 1984-01-23 1984-01-23 Combination mechanical and electrical interlock mechanism
EP84900914A EP0168395B1 (fr) 1984-01-23 1984-01-23 Mecanisme mecanique et electrique combine d'interverrouillage
BR8407271A BR8407271A (pt) 1984-01-23 1984-01-23 Mecanismo composto de travamento mecanico e eletrico
PCT/US1984/000082 WO1985003382A1 (fr) 1984-01-23 1984-01-23 Mecanisme mecanique et electrique combine d'interverrouillage
DE8484900914T DE3467460D1 (en) 1984-01-23 1984-01-23 Combination mechanical and electrical interlock mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/581,742 US4513181A (en) 1984-01-23 1984-01-23 Combination mechanical and electrical interlock mechanism
PCT/US1984/000082 WO1985003382A1 (fr) 1984-01-23 1984-01-23 Mecanisme mecanique et electrique combine d'interverrouillage

Publications (1)

Publication Number Publication Date
WO1985003382A1 true WO1985003382A1 (fr) 1985-08-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1984/000082 WO1985003382A1 (fr) 1984-01-23 1984-01-23 Mecanisme mecanique et electrique combine d'interverrouillage

Country Status (3)

Country Link
EP (1) EP0168395B1 (fr)
AU (1) AU564544B2 (fr)
WO (1) WO1985003382A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0495502A1 (fr) * 1991-01-17 1992-07-22 Fuji Electric Co., Ltd. Dispositif de verrouillage mutuel pour contacteurs électromagnétiques
ES2042390A2 (es) * 1992-02-18 1993-12-01 Power Control Distributors Esp Enclavamiento mecanico para baterias de contactores.
FR2727566A1 (fr) * 1994-11-28 1996-05-31 Abb Control Sa Dispositif de condamnation electrique et mecanique pour contacteurs

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4544814A (en) * 1984-01-19 1985-10-01 Eaton Corporation Mechanical interlock for contactors
FR2617328B1 (fr) * 1987-06-26 1989-11-03 Telemecanique Electrique Dispositif de condamnation mecanique et electrique pour contacteurs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1340955A (fr) * 1962-09-13 1963-10-25 Comp Generale Electricite Dispositif de verrouillage électromécanique
US3437773A (en) * 1967-08-24 1969-04-08 Cutler Hammer Inc Convertible electric switch module
US3510612A (en) * 1967-12-14 1970-05-05 Allis Chalmers Mfg Co Mechanical interlock for electrical switches or the like
FR2164486A1 (fr) * 1971-12-22 1973-08-03 Mang Ets Gerard
FR2525025A1 (fr) * 1982-04-10 1983-10-14 Bbc Brown Boveri & Cie Dispositif de verrouillage pour organes de commutation electriques

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1340955A (fr) * 1962-09-13 1963-10-25 Comp Generale Electricite Dispositif de verrouillage électromécanique
US3437773A (en) * 1967-08-24 1969-04-08 Cutler Hammer Inc Convertible electric switch module
US3510612A (en) * 1967-12-14 1970-05-05 Allis Chalmers Mfg Co Mechanical interlock for electrical switches or the like
FR2164486A1 (fr) * 1971-12-22 1973-08-03 Mang Ets Gerard
FR2525025A1 (fr) * 1982-04-10 1983-10-14 Bbc Brown Boveri & Cie Dispositif de verrouillage pour organes de commutation electriques

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0495502A1 (fr) * 1991-01-17 1992-07-22 Fuji Electric Co., Ltd. Dispositif de verrouillage mutuel pour contacteurs électromagnétiques
US5216398A (en) * 1991-01-17 1993-06-01 Fuji Electric Co., Ltd. Mutual locking device for electromagnetic contactors
ES2042390A2 (es) * 1992-02-18 1993-12-01 Power Control Distributors Esp Enclavamiento mecanico para baterias de contactores.
FR2727566A1 (fr) * 1994-11-28 1996-05-31 Abb Control Sa Dispositif de condamnation electrique et mecanique pour contacteurs
EP0715325A1 (fr) * 1994-11-28 1996-06-05 Abb Control Dispositif de condamnation électrique et mécanique pour contacteurs

Also Published As

Publication number Publication date
EP0168395B1 (fr) 1987-11-11
AU2570784A (en) 1985-08-09
EP0168395A1 (fr) 1986-01-22
AU564544B2 (en) 1987-08-13

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