US3548349A - Magnetic control relay - Google Patents

Magnetic control relay Download PDF

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Publication number
US3548349A
US3548349A US800459A US3548349DA US3548349A US 3548349 A US3548349 A US 3548349A US 800459 A US800459 A US 800459A US 3548349D A US3548349D A US 3548349DA US 3548349 A US3548349 A US 3548349A
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United States
Prior art keywords
contact
casing
control relay
magnetic control
box
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Expired - Lifetime
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US800459A
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English (en)
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Teizo Fujita
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Individual
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Individual
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Publication of US3548349A publication Critical patent/US3548349A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices
    • H01H50/545—Self-contained, easily replaceable microswitches

Definitions

  • a magnetic control relay wherein contact portions are provided separately from and independently of an electromagnet portion, said contact portions are constructed independently of each other for the respective poles, each independent contact portion for each pole is constructed in the form of a unit contact box, and such unit contact 'boxes are placed side by side on said electromagnet portion and attached to the latter.
  • This invention relates to a magnetic control relay, and more particularly it pertains to such relay for use in a variety of operating circuits, which is a combination of contact portions adapted to open or close an electric circuit and an electromagnetic portion for driving said contact portions.
  • Another object of this invention is to provide a magnetic control relay characterized in that contact portions are provided separately from and independently of an electromagnet portion, said contact portions are constructed for the respective poles independently of each other, each independent contact portion for each pole is constructed in the form of a unit contact box, and such unit contact boxes are placed side by side on said electromagnet portion so as to be detachably mounted thereon.
  • design is made such that the contact portions can be easily attached to or detached from the electromagnet portion.
  • the number of poles and the type of contact arrangement could not be freely selected and dculties have been encountered in the maintenance and inspection thereof, since it was the usual practice that the contact portions ICC and the electromagnet portion were constructed as a unit.
  • maintenance and inspection can be easily and conveniently carried out for each separate portion.
  • FIG. l is a front view, partly cut-a'way, showing the magnetic control relay according to an embodiment of this invention.
  • FIG. 2 is a side view thereof
  • FIG. 3 is a longitudinal sectional front view thereof
  • FIG. 4 is a longitudinal sectional side View showing the electromagnet casing
  • FIG. 5 is a plan view thereof
  • FIG. 6 is a perspective view showing the stopper
  • FIGS. 7, 8, and 9 are longitudinal sectional views showing single-contact, double-contact and triple-contact type unit contact boxes respectively;
  • FIG. 10 is a front View showing a high-capacity type unit contact box mounted in place
  • FIG. ll is a side view thereof.
  • FIGS. 12A, B, and C are front views showing the covers for the contact boxes according to embodiments of the present invention wherein the type of contact arrangement can be identied from a color applied thereon, respectively.
  • the reference numeral 1 represents a casing in which an operating electromagnet M is accommodated, 2, 3, and 4 a fixed core, excitation coil and movable core which constitute the electromagnet M respectively, and 3a and 3b terminals taken from the excitation coil 3.
  • the reference numeral 5 denotes a connector member which is coupled to the movable core 4 through a shaft 6.
  • the connector member 5 is held in an elevated position by means of springs 7 inserted between spring receiving portions 5a, 5a projecting sidewise therefrom and the top surface of a bobbin on which the excita- Ltion coil 3 is wound, so that the movable core 4 coupled to the connector member 5 is also held in an elevated position.
  • Two engaging pieces 5b, 5b are provided on the top surface of the connector member 5 in opposing relationship with each other, and they are made to project upwards through an aperture 1c formed in the center portion of an upper box 1b of the casing 1.
  • the ends of the engaging pieces 5b, Sb are inwardly bent so that the spacing therebetween is reduced so as to dene engaging ends 5c.
  • Engage engaging ends 5c are provided in the neighborhood of the opposite sides on the top surface of the casing upper box 1b.
  • engaging pieces 1d, 1d are provided in the neighborhood of the opposite sides on the top surface of the casing upper box 1b.
  • formed in the top surface of the casing upper box 1b are six recesses 1e, respective three of which are located at 3 equal intervals between the engaging pieces 5b, 5b and 1d, 1d.
  • the upper box 1b is combined with lower box 1a of the casing by means of screws 8, as shown in FIG. 1, these boxes being made independent of the electromagnet portion as shown in FIGS. 4 and 5.
  • the reference numeral 9 indicates a unit contact box comprising a main body 9a which is open at one side and a cover 9b covering the open face of the main body.
  • the reference numeral 10 represents a movable contact supporting member vertically extending through the main body 9a and supporting movable contacts 11 with the aid of a spring 12.
  • the reference numerals 13 and 14 indicate iixed contacts provided in opposing relationship to the movable contacts 11 and which are adapted to be contacted by the movable contacts 11 so as to be shortcircuited therethrough. Connection terminals 13a and 14a are taken from the iixed contacts 13 and 14 sidewise of the main body 9a respectively.
  • recessed grooves 9c which are congured in substantially the same shape as the engaging pieces provided on the upper box 1b, 1d so that the engaging pieces may be snugly fitted therein.
  • the reference numeral 15 represents Stoppers each of which is so adapted that the lower end thereof is inserted in an associated recess 1e.
  • the lower ends of the Stoppers 15 are normally projected downwardly of the bottom surface of the main body 9a by inserting flanges 15a of the Stoppers in recesses 9d formed in the main body and downwardly biasing them lwith the aid of springs 16.
  • a recessed groove 9e formed in the bottom surface of the contact box 9 in the center portion thereof is a recessed groove 9e extending laterally thereof into which can be inserted that portion of the connector member 5 which projects out of the upper box 1b of the casing.
  • the support 10 has its lower end placed in the recessed groove 9e, and it is provided in the lower end portion at the opposite sides with slots 10b, 10b with which the engaging ends 5c formed by banding the engaging pieces 5b of the connector member 5 can be engaged Iwhen the engaging pieces 5b are inserted in the recessed grooves 9e.
  • the reference numerals 17 and 18 indicate throughholes extending through the main body 9a and cover 9b which are secured to each other by means of pins 19 to assemble the unit contact box 9.
  • the former is slidden longitudinally of the engaging pieces 1d and engaging pieces 5b while the engaging pieces 1d, 1d projecting from the top surface of the upper box 1b are fitted in the recessed grooves 9c, 9c formed in the bottom surface of the contact box 9 and the engaging pieces 5b lof the connector member 5 are inserted in the recessed grooves 9e so that the engaging ends 5c, Sc are fitted into the slots 10b, 10b formed in the lower end portion of the support 10.
  • the unit contact box is displaced with the lower ends of the Stoppers 15 disposed in contact with the casing 1 so as to be pushed up by means of the springs 16.
  • Stoppers 15 are brought above the recesses 1e of the casing 1, the lower ends of the Stoppers are dropped into the recesses 1e with the aid of the springs 16, so that the contact box 9 is stopped from displacement.
  • the contact box 9 is caused to rest on the casing 1 and combined therewith.
  • the combined relationship between the contact box 9 and the casing 1 is as shown in FIG. 3.
  • FIG. 3 shows a contact box for normally-open contacts as mounted in place.
  • a contact box for normally-closed contacts such as shown in FIG. 7 may be mounted instead of that for normally-open contacts.
  • FIG. 8 shows a double-contact type magnetic control relay wherein the contacts are mounted in two steps, one of the two contacts being normally open and the other one being normally closed.
  • FIG. 9 shows a triple-contact type magnetic cont'rol relay wherein the contacts are mounted in three steps, two of the three contacts being normally open and the other one being normally closed.
  • a normally-closed contact can be established merely by supporting the movable contact 11 with the aid of spring 12 in a window aperature 10c formed in the support 10 below the window aperture 10a so that the iixed contacts 13, 14 and movable contact 11 may be utilized for the arrangements of both the normally-open type and normally-closed type (see FIG. 7).
  • the bulier spring 20 is inserted inthe window aperture 10a for normally-closed contact while being supported by means of a spring 21 in such a manner that the opposite ends of the spring 20 are projected out of the window aperture 10a so as to
  • the fixed contacts 13, 14 are bridged with the movable contact 11 before the movable core 4,is caused to violently strike against the lixed core 2.
  • the support spring 12 serves as buffer, and therefore there is no need to use any special buffer spring.
  • the reference numerals 22 and 23 indicate through holes extending through the contact box 9. These through holes are formed for the purpose of inserting screws 24 therethrough to thereby iixedly attach all the plural contact vboxes 9 to the casing 1 with the aid of nuts or the like.
  • FIG. l0 shows a contact box 25 of a high capacity as being attached to the casing 1.
  • design is made such that only two such contact boxes are placed on the area of the casing 1 where three contact boxes are normally located, as shown in FIG. 11.
  • a double-pole type magnetic control relay there is provided a double-pole type magnetic control relay.
  • the cover 9b attached to each unit contact box is colored in a different color to distinguish between the normallyopen contact type and the normally-closed contact type.
  • the internal contact arrangement can easily be determined from the color since the cover 9b for each contact box 9 has its side end surface exposed even in the case where the contact boxes 9 mounted on the casing 1 correspond to three poles, as shown in FIG. 2.
  • the double-contact type if it is constructed in such a manner that one of the contacts is normally open while the other one is normally closed, the upper and lower portions of the cover 9b are colored in dilferent colors according to the contact arrangement, as shown in FIG. 12a. Referring to FIGS.
  • covers for the triple-contact type box which are colored in different colors to distinguish between the arrangement wherein two of the contacts are normally open and the other one is normally closed and that wherein one of the contacts is normally ope-n and the other two contacts are normally closed.
  • a magnetic control relay comprising an electromagnet casing accommodating therein an operating electromagnet, a plurality of unit contact boxes having movable contacts and support for said movable contacts, rst and second slidable casing engaging portions provided respectively on opposite sides of the lower surface of each of said unit contact boxes and on opposite sides of the upper surface of said electromagnet casi-ng, first and second slidable engaging portions provided respectively on the lower end of said support and the upper end of said movable core, and Stoppers carried by each of said unit Contact boxes and projecting downwardly therefrom, said Stoppers being spring biased downwardly to engage a plurality of spaced recesses in the upper surface of said electromagnet casing, whereby said unit contact boxes slidably engage said electromagnet casing and said support slidably engages said movable core, proper positioning and retention of said unit contact boxes on said electromagnet casing as well as ease of installation and removal being assured by the interaction of said Stoppers with said recesses.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
US800459A 1968-08-05 1969-02-19 Magnetic control relay Expired - Lifetime US3548349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43055400A JPS4844312B1 (enrdf_load_stackoverflow) 1968-08-05 1968-08-05

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US3548349A true US3548349A (en) 1970-12-15

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US800459A Expired - Lifetime US3548349A (en) 1968-08-05 1969-02-19 Magnetic control relay

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US (1) US3548349A (enrdf_load_stackoverflow)
JP (1) JPS4844312B1 (enrdf_load_stackoverflow)
DE (1) DE1909460A1 (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3639866A (en) * 1970-10-12 1972-02-01 Honeywell Inc Constant actuating force arrangement for a relay and a relay-adder combination
US3651437A (en) * 1971-03-19 1972-03-21 Matsushita Electric Works Ltd Electromagnetic contactor
DE2461782A1 (de) * 1974-01-03 1975-07-10 Telemecanique Electrique Elektrisches schaltgeraet
US4087770A (en) * 1976-06-29 1978-05-02 Allen-Bradley Company Industrial relay
EP3759727A4 (en) * 2018-02-28 2021-12-08 Schneider Electric Asia Pte. Ltd. RELAY CONTROL DEVICE FOR A RELAY MODULE

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2488040A1 (fr) * 1980-08-01 1982-02-05 Cem Comp Electro Mec Dispositif de fixation d'accessoires sur la face avant d'un contacteur monobloc
DE8023868U1 (de) * 1980-09-06 1982-03-25 Starkstrom Gummersbach GmbH, 5277 Marienheide Kontaktvorrichtung für Niederspannungs-Schaltgeräte, insbesondere Schütze
DE3486065D1 (de) * 1984-03-31 1993-03-18 Square D Deutschland Schaltbruecke fuer elektrische schaltgeraete, insbesondere schuetze.
DE8611138U1 (de) * 1986-04-23 1986-06-19 Siemens AG, 1000 Berlin und 8000 München Schütz mit zusätzlichem Schalterblock
DE8805878U1 (de) * 1988-05-03 1989-09-07 Siemens AG, 1000 Berlin und 8000 München Hilfsschalteraufsatzblock

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778903A (en) * 1954-04-23 1957-01-22 Jr Albert F Hopkins Switch position indicators
US3099728A (en) * 1958-06-11 1963-07-30 Ward Leonard Electric Co Electrical multipole control relays
US3161751A (en) * 1962-05-17 1964-12-15 Gen Electric Reversible electrical contact structure
US3225170A (en) * 1964-03-09 1965-12-21 S & C Electric Co Means for indicating the position of the contacts of a circuit interrupter
US3243544A (en) * 1964-12-09 1966-03-29 Allen Bradley Co Convertible relay control station
US3409851A (en) * 1966-11-03 1968-11-05 Ward Leonard Electric Co Multipole electromagnetic contactor
US3451018A (en) * 1967-11-24 1969-06-17 Ite Imperial Corp Contactor electromagnet

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778903A (en) * 1954-04-23 1957-01-22 Jr Albert F Hopkins Switch position indicators
US3099728A (en) * 1958-06-11 1963-07-30 Ward Leonard Electric Co Electrical multipole control relays
US3161751A (en) * 1962-05-17 1964-12-15 Gen Electric Reversible electrical contact structure
US3225170A (en) * 1964-03-09 1965-12-21 S & C Electric Co Means for indicating the position of the contacts of a circuit interrupter
US3243544A (en) * 1964-12-09 1966-03-29 Allen Bradley Co Convertible relay control station
US3409851A (en) * 1966-11-03 1968-11-05 Ward Leonard Electric Co Multipole electromagnetic contactor
US3451018A (en) * 1967-11-24 1969-06-17 Ite Imperial Corp Contactor electromagnet

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3639866A (en) * 1970-10-12 1972-02-01 Honeywell Inc Constant actuating force arrangement for a relay and a relay-adder combination
US3651437A (en) * 1971-03-19 1972-03-21 Matsushita Electric Works Ltd Electromagnetic contactor
DE2461782A1 (de) * 1974-01-03 1975-07-10 Telemecanique Electrique Elektrisches schaltgeraet
US3964006A (en) * 1974-01-03 1976-06-15 La Telemecanique Electrique Electrical apparatus
US4087770A (en) * 1976-06-29 1978-05-02 Allen-Bradley Company Industrial relay
EP3759727A4 (en) * 2018-02-28 2021-12-08 Schneider Electric Asia Pte. Ltd. RELAY CONTROL DEVICE FOR A RELAY MODULE

Also Published As

Publication number Publication date
JPS4844312B1 (enrdf_load_stackoverflow) 1973-12-24
DE1909460A1 (de) 1970-03-26

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