US3519968A - Contactor with improved electromagnetic operating device - Google Patents

Contactor with improved electromagnetic operating device Download PDF

Info

Publication number
US3519968A
US3519968A US791976*A US3519968DA US3519968A US 3519968 A US3519968 A US 3519968A US 3519968D A US3519968D A US 3519968DA US 3519968 A US3519968 A US 3519968A
Authority
US
United States
Prior art keywords
armature
contactor
contact
core
casing
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.)
Expired - Lifetime
Application number
US791976*A
Other languages
English (en)
Inventor
Andre Georges Faffart
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
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 La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Application granted granted Critical
Publication of US3519968A publication Critical patent/US3519968A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
    • H01H50/22—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil wherein the magnetic circuit is substantially closed
    • 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
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • 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
    • H01H50/24—Parts rotatable or rockable outside coil

Definitions

  • a contactor with electromagnetic control comprising a pivoted electroemagnet core provided with a coil and having flat pole faces, and an armature oscillating about an axis7 having flat pole faces respectively facing the pole faces of the pivoted core and on which an insulating member is rigidly mounted opposite the po-le face with respect of the axis of oscillation and which comprises at least one insulating fork, said oscillating armature being restored by a calibratable elastic means.
  • At least one moving contact, carried by a flexible blade is mounted facing at least one fixed contact, each connected to a terminal, the free extremity of the flexible blade being engaged with play between the arms of the insulating fork, said blade being released by the arms of the fork in closed position of the contact, while a calibrated spring applies said moving contact against said xed contact.
  • the present invention relates to an improved operating device for a contactor with electromagnetic control. lt is also concerned with a contactor comprising the said device.
  • Contactors with electromagnetic control devices are already known, and generally comprise two complementary elements, namely the driving device and the contactcarrier portion, the mounting of which cannot be effected without being obliged to carry out an adjustment of the moving contacts.
  • This adjustment is made especially necessary by the manufacturing tolerances, the required contact pressure and the adverse effects of bouncing.
  • An adjustment of this kind involves in its turn the presence of elements which can themselves get out of adjustment.
  • the adjustment can only be made when the apparatus has been assembled and closed, it is only possible to carry out a purely visual adjustment so that regular performances cannot be obtained.
  • the number of smoving parts and the friction which they introduce is such that it becomes necessary to overdimension the electromaget and to terminate with excessive consumption and volume with respect to the rupturing capacity of the apparatus.
  • the present invention overcomes these disadvantages by providing an operating device for a contactor with electromagnetic control, in which the adjustment of the contacts may be elfected in a stable and reliable manner before the assembly of its elements, ensuring regular performances with an acceptable volume and consumption of energy.
  • the device in accordance with the invention is essentially characterized by the fact that it comprises, in combination:
  • An electromagnet core comprising a coil and flat pole faces co-operating lwith an oscillating armature having flat pole faces, this latter being provided With an insulating member having one or a number of forks in alignment, located opposite the pole faces with respect to the axis of oscillation of the said armature.
  • the electromagnet armatures and the control coil of the said armatures are contained in a single casing.
  • the fixed contacts, the moving contacts and the electric current lead-in connections are contained in a single cover.
  • the said cover and the said casing can be assembled together.
  • the oscillating armature and the insulating member with forks are imovable in rotation about an axis passing through the plane of one of its pole faces and coinciding with the extreme edge of the pole face of the limb of the core from which it lmoves away least.
  • the core is able to pivot about a housing rigidly fixed to the casing and can be brought back automatically to a position of rest.
  • Each moving contact is carried by a bent-back liexible blade, one extremity of which is fixed to a connection terminal in electrical contact therewith.
  • the insulating member comprises, on the side opposite to the core, a recess on the bottom of which is supported the extremity of an armature return spring, the other extremity of which is supported on a cup coaxial with the said spring, the said cup being adjustable in position along its axis by means of a screw adjustment device.
  • the screw adjustment device is coaxial with one terminal of the excitation coil, the said terminal being pierced with an axial opening up to the head of the screw.
  • FIG. l shows a View in elevation of the apparatus with a cross-section of the cover at the level of the coil terminals
  • FIG. 2 represents a view in elevation of the same apparatus with a cross-section of the cover at the level of the contact terminals;
  • FIG. 3 is a cross-section taken in a plane passing through the axis of the armature pivots
  • FIG. 4 shows a plan view of the apparatus with the switch unit removed.
  • FIGS. 1, 2, 3 and 4 Referring now to FIGS. 1, 2, 3 and 4:
  • the apparatus comprises a casing 1 provided with fixing lugs, in which is placed a coil body 2, ⁇ fixed by means of screws 3 which are accessible from the lower face of the casing 1.
  • This coil body 2 is constituted by an insulating body such as for example of thermoplastic or or thermo-hardening resin moulded over a winding 4, of which the connections 5 in the form of a square are directed upwards and are also coated over a part of their path by the said resin, which thus forms two vertical columns ⁇ 6.
  • the casing 1 also comprises a fixed core 7 of a usual type composed of a stack of magnetic steel sheets assembled together by rivets. These sheets are cut-out so as to form a housing foot 8, housed in a block of elastic material 9, such as rubber, having an opening centered on a nipple 10 moulded integrally with the bottom of the casing 1.
  • a recess 11 intended to receive one of the extremities of an elastic member 12 such as for example a spring or a block of rubber, rigidly xed to a support 13 embedded in the vertical wall of the casing.
  • the core is thus capable of carrying out any pivotal movement within the space round its housing foot 8 and to return to its position of rest due to the action of the elastic member 12.
  • the above casing 1 further comprises a moving armature 14 made-up of stacked magnetic steel sheets assembled together by rivets, and the upper portion of which is provided with an opening 15 produced by punchingout the sheets before assembly.
  • a nut 16 of rectangular shape which serves to x the armature 14 on an oscillating member 17 by means of a screw 18.
  • This oscillating member is constituted by a part made of insulating material, such as plastic material for example, which comprises a certain number of forks, constituted by arms 19 and 20, a blind housing 21 and two pivots 22. These latter are housed in bearings 23 of insulating material, plastic material for example, which are located in recesses formed in the two opposite vertical walls of the casing 1.
  • the extremity of a compression spring 24 In the blind housing 21 there is supported for returning the armature, the extremity of a compression spring 24, the other extremity of which is supported on a cup 2S, the axial position of which can be modied by an adjusting screw 26.
  • the pivotal axis of the oscillating member passes through the plane of the upper pole face of the armature and is practically coincident with the edge of the core formed by the intersection of the pole face with the outer surface of the upper limb of the core.
  • the lower face of the insulating member 17 forms a slightly obtuse angle with the pole face of the armature.
  • the upper portion of the apparatus is closed by a switch unit 27 in which are mounted the contacts, and which is rigidly lixed to the casing, for example by means of two clamping screws 28 which are engaged in the connections 5 leading the current to the coil body 2, this coil body being in turn iixed on the bottom of the casing.
  • the cover comprises a certain number of pairs of contacts, each pair comprising a ixed contact and a moving contact which are mounted in xed positions inside the cover.
  • the xed contact of each pair is constituted by a contact stud 29 xed on a stirrup 30, for example by means of a rivet, the stirrup being formed by bending a strip cut-out from a steel sheet.
  • This stirrup comprises an extension 31 on lwhich is threaded a conducting ring 32 of oblong shape, which can be brought into a high position by means of a clamping screw 33 so as to form the electrical connection with an external conductor.
  • Each moving contact is constituted by a contact stud 34 lixed on a contact carrier 35 by means of a rivet for example.
  • This contact carrier is formed by an elastic blade with two arms made of a metal which is a good conductor of electricity, in which the lower extremity 36 of one of the arms is engaged with play between the arms 19 and of the corresponding fork carried by the oscillating member of the armature.
  • the upper portion of the elastic blade is bent back and has one arm shorter than that previously referred to and parallel to the latter, this arm being fixed by insetting on the extension of a stirrup 37, which is furthermore of a shape generally similar to that of the stirrup 30 which carries the iixed contact stud.
  • a compression spring 38 is mounted between the stirrup 37 and the face of the elastic blade opposite to that which carries the moving contact stud 34 and at the same height.
  • the function of this spring which is held in position by projecting portions on the two elements against 4which it is supported, is on the one hand to apply the moving contact stud 34 against the iixed contact stud 29 when the arm 19 of the fork has, due to the play provided, released the lower extremity of the moving contactcarrier blade, and on the other hand to apply the said extremity against the arm when this latter is required to drive it.
  • FIG. 2 shows the operation of a rest contact, that is to say established when the electromagnet is de-energized, but it is clear to those skilled in the art that the same result could be obtained by means of a working contact, obtained by turning round in the contact carrier 35 the assembly constituted by the elastic blade, the fixed contact and the moving contact.
  • the contactor described above which comprises a lower portion including the driving elements and an upper portion including the xed contacts and the moving contacts together with the supply terminals for the coil, an arrangement which facilitates its construction, the driving elements and the contact elements can be regulated separately during assembly, which permits accurate prior calibration of the spring 24 and the springs 38, thus precluding any interaction of these elements.
  • the elements of the driving portion of the contactor such as the core and armature, are located and arranged in such manner that no adjustment of position should be effected after the assembly of the two parts, due to the fact, on the one hand, that the axis of rotation of the armature, the geometric position of which is dened precisely, passes through the plane of one of the pole faces of the armature, and that, on the other hand, it coincides constantly with the upper edge of the corresponding pole face of the core, by means of the elastic member which acts on the rear face of the said core, conjointly with the pivot with which it is provided, in such manner that the contact between the core and the armature is effected at the level of the axis of rotation of the said armature.
  • connection elements are placed in the upper portion of the apparatus constitutes a further advantage of the arrangement described above, the conducting clamping screws 28 permitting rapid checking of all the voltages.
  • the above apparatus may compirse alterative forms in its construction.
  • the elastic block 9 may be replaced by a swivel joint or again the fork arms may be replaced by nipples located between the arms of an end fork of the elastic blades.
  • a contactor with electromagnetic control acting by the eiect of an over-Voltage of predetermined value and Without bouncing of contacts comprising, in a casing:
  • an electromagnet core provided with a coil pivotally mounted in said casing and having flat pole faces;
  • an insulating member rigidly fixed to the oscillating armature and mounted opposite the pole faces with respect to the axis of oscillation, and comprising at least one insulating fork;
  • the moving contact being carried by a flexible blade, the free extremity of which is engaged with play between the arms of the insulating fork, said blade being released by the arms of the fork in the closed position of the contacts, the terminals being mounted on an insulating block in the form of a cover for the said casing;

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Toys (AREA)
  • Braking Arrangements (AREA)
  • Cosmetics (AREA)
US791976*A 1968-01-23 1969-01-17 Contactor with improved electromagnetic operating device Expired - Lifetime US3519968A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR137135 1968-01-23

Publications (1)

Publication Number Publication Date
US3519968A true US3519968A (en) 1970-07-07

Family

ID=8644984

Family Applications (1)

Application Number Title Priority Date Filing Date
US791976*A Expired - Lifetime US3519968A (en) 1968-01-23 1969-01-17 Contactor with improved electromagnetic operating device

Country Status (20)

Country Link
US (1) US3519968A (cs)
JP (1) JPS4915312B1 (cs)
AT (1) AT282735B (cs)
BE (1) BE726916A (cs)
BR (1) BR6905831D0 (cs)
CH (1) CH489896A (cs)
CS (1) CS152954B2 (cs)
DE (1) DE1902940B2 (cs)
ES (1) ES362836A1 (cs)
FR (1) FR1561299A (cs)
GB (1) GB1258788A (cs)
IL (1) IL31454A (cs)
LU (1) LU57795A1 (cs)
NL (1) NL6901032A (cs)
NO (1) NO128136B (cs)
OA (1) OA02985A (cs)
PL (1) PL72587B1 (cs)
SE (1) SE359684B (cs)
SU (1) SU374874A3 (cs)
YU (1) YU31779B (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100180614A1 (en) * 2007-09-28 2010-07-22 International Truck Intellectual Property Company, Llc Cold Plate Refrigeration System Optimized For Energy Efficiency
WO2013164027A1 (en) * 2012-05-03 2013-11-07 Siemens Aktiengesellschaft Electrical switch and electromagnetic assembly therefor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH524242A (de) * 1970-06-03 1972-06-15 Siemens Ag Elektromagnetisches Schaltgerät
DE2715572C2 (de) * 1977-04-07 1985-11-14 Brown, Boveri & Cie Ag, 6800 Mannheim Schraubensicherung
DE3569060D1 (en) 1985-04-15 1989-04-27 Square D Starkstrom Gmbh Contactor, particularly auxiliary or motor contactor
RU169093U1 (ru) * 2016-08-23 2017-03-03 Елена Евгеньевна Кашичкина Контактор

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969444A (en) * 1956-07-16 1961-01-24 Deissler Otto Electromagnetically actuated switch
US3319199A (en) * 1964-03-13 1967-05-09 Naimer H L Electromagnetically operated switches having improved contact actuating means
US3388353A (en) * 1965-10-07 1968-06-11 Smith Corp A O Electrical contactor having main circuit control contacts and auxiliary control contacts interconnected to be actuated from a common electromagnetic actuator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969444A (en) * 1956-07-16 1961-01-24 Deissler Otto Electromagnetically actuated switch
US3319199A (en) * 1964-03-13 1967-05-09 Naimer H L Electromagnetically operated switches having improved contact actuating means
US3388353A (en) * 1965-10-07 1968-06-11 Smith Corp A O Electrical contactor having main circuit control contacts and auxiliary control contacts interconnected to be actuated from a common electromagnetic actuator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100180614A1 (en) * 2007-09-28 2010-07-22 International Truck Intellectual Property Company, Llc Cold Plate Refrigeration System Optimized For Energy Efficiency
WO2013164027A1 (en) * 2012-05-03 2013-11-07 Siemens Aktiengesellschaft Electrical switch and electromagnetic assembly therefor

Also Published As

Publication number Publication date
NL6901032A (cs) 1969-07-25
GB1258788A (cs) 1971-12-30
IL31454A0 (en) 1969-03-27
SE359684B (cs) 1973-09-03
YU15369A (en) 1973-04-30
CS152954B2 (cs) 1974-02-22
PL72587B1 (cs) 1974-08-30
NO128136B (cs) 1973-10-01
CH489896A (fr) 1970-04-30
BE726916A (cs) 1969-06-16
SU374874A3 (cs) 1973-03-20
YU31779B (en) 1973-10-31
DE1902940A1 (de) 1969-09-11
IL31454A (en) 1972-04-27
FR1561299A (cs) 1969-03-28
OA02985A (fr) 1970-12-15
LU57795A1 (cs) 1969-05-13
AT282735B (de) 1970-07-10
BR6905831D0 (pt) 1973-04-17
DE1902940B2 (de) 1971-11-25
ES362836A1 (es) 1970-11-16
JPS4915312B1 (cs) 1974-04-13

Similar Documents

Publication Publication Date Title
US2824189A (en) Electro-magnetic switching device
US4317097A (en) Heat switch
US3519968A (en) Contactor with improved electromagnetic operating device
US2946872A (en) Shock and vibration resistant electromagnetic contactor
US2414961A (en) Electromagnetic device
US2767280A (en) Relay structure
US4307361A (en) Electric control apparatus with an electromechanical latch device
US4254391A (en) Split armature relay
US3076880A (en) Relay
US4272745A (en) Electromagnetic relay
US4081772A (en) Moving contact terminals for relays
US3322914A (en) Electric switch employing non-teasable movable contact mechanism
US2336871A (en) Electric switch
US2892053A (en) Electromagnetic relay
US4377796A (en) Electric control device
US2790876A (en) Relay
US2802077A (en) Miniature slide handle snap switch
EP0016196B1 (en) A magnetic latch device for a clapper type contactor
US3193642A (en) Vibratory switch, chiefly for ignition systems
US2820183A (en) Electromagnetic actuators
US4092581A (en) Rechargeable battery-operated shaver with printed circuit module mounting brush means, batteries and switch means
US2906132A (en) Toggle
US3156797A (en) Plug-in electromagnetic relay
US3312800A (en) Electrical switch employing improved contact break mechanism
US3144529A (en) Snap switch