US3167626A - Normally closed auxiliary contact device including a slide member provided with fast acting contact means - Google Patents

Normally closed auxiliary contact device including a slide member provided with fast acting contact means Download PDF

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Publication number
US3167626A
US3167626A US228656A US22865662A US3167626A US 3167626 A US3167626 A US 3167626A US 228656 A US228656 A US 228656A US 22865662 A US22865662 A US 22865662A US 3167626 A US3167626 A US 3167626A
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US
United States
Prior art keywords
lever
contact
casing
slider
normally closed
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
US228656A
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English (en)
Inventor
James P Rochette
Robert A R Caudron
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.)
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Publication date
Application filed by La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
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Publication of US3167626A publication Critical patent/US3167626A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0066—Auxiliary contact devices

Definitions

  • This invention relates to a normally closed auxiliary contact device having a fast action and adapted for electromagnetically operated electrical apparatus, for automatically reducing the energizing current applied to the elec tromagnet windings after initial energization of the electromagnet to operate main contacts associated therewith.
  • One object of the invention is to provide such a contact device which will not operate until the electromagnetically displaced element, such as an armature, has reached a point in its displacement very close to its final position, and will then operate quickly and positively and reliably.
  • Another object is to provide such a fastacting contact device which will be positively snapped to its operated condition by the kinetic acquired by it in the initial stage of its displacement.
  • the fast-acting contact assembly of the invention is readily adjustable so as to be operated (e.g. to its open position) at an instant where the electromagnetically actuated element, e.g. armature, has very nearly attained its final position; at the same time, however, a positive, clearcut contact-opening action is attained with a wide spacing between the contacts in the final condition of the device.
  • the electromagnetically actuated element e.g. armature
  • FIG. 1 is a schematic showing of conventional electromagnetic contactor apparatus including main contacts and auxiliary contacts serving to introduce auxiliary resistance into the electromagnet energizing circuit and this figure serves to illustrate a preferred field of use of the invention.
  • FIG. 2 is an elevational view, partly in section, of a fast-acting contact device according to the invention usable as the auxiliary contacts designated as E in the diagram of FIG. 1.
  • FIG. 3 is an elevational view of an electromagnetic contactor system according to the basic diagram of FIG. 1, and embodying the fast-acting contact device of FIG. 2 as an auxiliary contact device therein;
  • FIG. 4 is a view on line IV-IV of FIG. 3.
  • the electromagnet C of a contactor device or the like is connected with a D.-C. source B and a switch A so as to be energized on closure of the switch.
  • the contactor electromagnet controls the condition of a set of main switch contacts such as D1, D2, D3 and an auxiliary switch contact E.
  • Auxiliary switch E is connected across a resistor R.
  • the auxiliary switch E is opened so as to connect resistance R into the electromagnet energizing circuit.
  • the energizing current applied to the electromagnet windings through resistance R while being lower than the current required to operate main contacts D, is still suflicient to maintain the energization and hence hold the main D contacts in their closed condition.
  • the electromagnet When the energizing circuit is opened, as by opening the switch A or another switch, the electromagnet is completely deenergized and the main contacts are opened, while the auxiliary switch E is closed, thereby conditioning the contactor system for a fresh operating sequence.
  • the auxiliary switch E is constructed in a preferred embodiment as shown in PEG. 2.
  • the illustrated device comprises a generally rectangular housing 1 made of insulating material. Movably mounted in the housing is a slider member 3 having an outer end portion 3a projecting through an opening in a side of the housing.
  • the member 3 is made of insulatin material, and is rectangular in cross section. It is slidable in suitable bearing surface such as 1:: and 1b of housing 1.
  • a block 4 of insulating material formed with an outwardly jutting arm 4a is adjustable by means of a se screw 5 having a head 5a seated in a recess formed in the outer end 3a of the slider, and a spring 6 urges the screw towards its seated condition.
  • the threaded end 5b of the screw has an outer diameter somewhat greater than the shank of the screw, and is force fitted in a smooth passage formed in block 4, preventing spontaneous unscrewing.
  • the siider 3 is further formed with another transverse recess through which a lever 8 extends, the lever being formed from a suitably conformed strip of metal.
  • a spring 9 seated against a surface of the slider 3 and the under surface of the lever 8 around a centering post 10 urges the lever upwards relatively to the slider.
  • Transverse displacements of lever 8 relative to the housing 1 and slider 3 are restricted, in one direction, by a cylindrical rod 11 secured as by solder to a lower surface of the lever and projecting at both ends beyond the side walls of the recess in the slider in which said lever is movable, and in the opposite direction by a stop portion 12 cut out of the strip constituting 8 and bent down laterally to provide a cam portion 12a as will presently appear.
  • the lever 8 at its left hand end according to the drawing is fitted a clearance fit into a cavity 13 formed in the adjacent wall of the housing 1, so as to be pivot-ally rotatable about a fulcrum provided by an edge 14 at the entrance to said cavity. Excessive angular displacement of lever 8 in the cavity 13 is prevented by a boss 8a provided on said lever, as by stamping and deforming a portion of said lever, which boss is adapted to abut against an opposite wall of cavity 13.
  • the lever 8 is electrically connected by means of a flexible braided tape 15 of conductive material to a fixed terminal 16 constituted by a metal strip fitted into a cavity 17, similar to cavity 13 formed in the housing near its upper end.
  • a fixed terminal 16 constituted by a metal strip fitted into a cavity 17, similar to cavity 13 formed in the housing near its upper end.
  • the lever 8 is provided with a contact 18 cooperating with a fixed contact 19a provided at the end of a stationary contact arm 19 also formed as a strip fitted into a further cavity formed at an appropirate position in the housing.
  • the housing 1 further includes an additional cavity 21 generally similar to the cavities mentioned above and formed in a lower part of the housing below cavity 13, and a further stationary contact arm 23 is fitted therein for reasons that will presently appear.
  • the housing 1 is further shown provided with smooth holes 24 for receiving studs or rivets for attaching a cover plate over the housing; a positioning pin 25 projecting from the lower end of the housing for mounting-location purposes; and a threaded mounting screw or stud 26 (also see FIG. 4) is provided, engaging in a lug 1c projecting laterally from the base of the housing.
  • FIGS. 3 and 4 illustrate the use of the switchbox just described as embodied in contactor apparatus of the general type disclosed diagrammatically in FIG. 1.
  • the housing 1 of the switchbox described is illustrated in outline.
  • the stationary contacts 16, 19 and 23 previously mentioned are blocked in their respective positions by means of suitable adhesive material such as a synthetic resin.
  • the contacts 16 and 23 are shown electrically interconnected by a U-shaped connector strap 28 externally of the housing 1.
  • An auxiliary resistor R corresponding in function to resistor R in the diagram of FIG.
  • a normally closed auxiliary contact device comprising a casing; a stationary contact supported in said casing; a lever pivoted on a fulcrum in said casing and having a movable contact thereon for cooperation with said stationary contact when the lever is rocked in one direction; a member slidable in said casing and displaceable in the opposite direction; return spring means acting between said casing and member for urging the member in said one direction; contact spring means acting between said member and said lever and urging said lever in said one direction for engaging said movable contact with said stationary contact; an actuating part carried by said member and engageable with a portion of said lever adjacent said fulcrum to rock said lever oppositely, to move the movable contact in said opposite direction to separate said movable contact from said stationary contact on displacement of the member in said opposite direction; and further spring means acting between said member and part to urge said part in said opposite direction relative to said member into a seated position in which said part is rigidly abutted against said member.
  • a device further comprising threaded means for adjusting the seated position of said actuating part with respect to the member.
  • a contact device including a transverse through-recess formed in said member and having said lever freely extending therethrough, an internal edge surface in said casing on one side of said member providing said fulcrum for the lever, and wherein said movable contact is carried on an end portion of said lever beyond the opposite side of said member;
  • stop means carried by said lever and respectively engageable with said casing and said member for limiting transverse displacement of the lever with respect to said member.
  • one of said stop means has a contour in the shape of an involute of a circle and is engageable with a surface portion of the casing parallel to the displacement of said member in the casing.
  • a device wherein said actuating part is positioned Within a recess formed in said member for displacement therein parallel to the displacement of said member.
  • a device further comprising a screw threadedly engaging said part and having a 6 shoulder portion engaging said member, and adjustable to adjust the seated position of said member, and wherein said further spring means is arranged to urge said part and screw in a direction to seat said shoulder portion against said member.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Breakers (AREA)
  • Push-Button Switches (AREA)
  • Motor Or Generator Current Collectors (AREA)
US228656A 1961-10-13 1962-10-05 Normally closed auxiliary contact device including a slide member provided with fast acting contact means Expired - Lifetime US3167626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR875859 1961-10-13

Publications (1)

Publication Number Publication Date
US3167626A true US3167626A (en) 1965-01-26

Family

ID=8764624

Family Applications (1)

Application Number Title Priority Date Filing Date
US228656A Expired - Lifetime US3167626A (en) 1961-10-13 1962-10-05 Normally closed auxiliary contact device including a slide member provided with fast acting contact means

Country Status (9)

Country Link
US (1) US3167626A (bg)
BE (1) BE623441A (bg)
CH (1) CH387747A (bg)
DE (1) DE1267311B (bg)
ES (1) ES281491A1 (bg)
FR (1) FR1310006A (bg)
GB (1) GB1019008A (bg)
LU (1) LU42502A1 (bg)
NL (1) NL284200A (bg)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3459059A (en) * 1967-03-03 1969-08-05 Telemecanique Electrique Lateral-actuation device,more particularly adaptable to electric switches or the like
US20180157219A1 (en) * 2016-12-06 2018-06-07 Eta Sa Manufacture Horlogere Suisse Device for controlling at least two electronic and/or mechanical functions of a portable object
US10147570B2 (en) * 2015-04-07 2018-12-04 Razer (Asia-Pacific) Pte. Ltd. Input devices

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853130A (ja) * 1981-09-24 1983-03-29 三菱電機株式会社 電磁接触器
DE10009499C1 (de) * 2000-02-29 2001-09-27 Siemens Ag Hilfsbaugruppe für ein elektromechanisches Schaltgerät und hiermit korrespondierendes elektromechanisches Schaltgerät

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US137730A (en) * 1873-04-08 Improvement in circuits for electro-magnets
US1242763A (en) * 1912-12-14 1917-10-09 Ets Bleriot L Sa Electromagnet.
US3005890A (en) * 1959-08-20 1961-10-24 Ritepoint Pen And Pencil Compa Solenoid operated switches
US3076075A (en) * 1960-03-14 1963-01-29 Gen Motors Corp Series-parallel magnetic switch

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE848666C (de) * 1948-10-02 1952-09-08 Hans Bernstein Betaetigungseinrichtung fuer elektrische Kontakte
DE1080662B (de) * 1956-10-27 1960-04-28 Kurt Maecker Elektrischer Stoesselschalter, insbesondere fuer die Steuerung von Werkzeugmaschinen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US137730A (en) * 1873-04-08 Improvement in circuits for electro-magnets
US1242763A (en) * 1912-12-14 1917-10-09 Ets Bleriot L Sa Electromagnet.
US3005890A (en) * 1959-08-20 1961-10-24 Ritepoint Pen And Pencil Compa Solenoid operated switches
US3076075A (en) * 1960-03-14 1963-01-29 Gen Motors Corp Series-parallel magnetic switch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3459059A (en) * 1967-03-03 1969-08-05 Telemecanique Electrique Lateral-actuation device,more particularly adaptable to electric switches or the like
US10147570B2 (en) * 2015-04-07 2018-12-04 Razer (Asia-Pacific) Pte. Ltd. Input devices
US20180157219A1 (en) * 2016-12-06 2018-06-07 Eta Sa Manufacture Horlogere Suisse Device for controlling at least two electronic and/or mechanical functions of a portable object
US10921754B2 (en) * 2016-12-06 2021-02-16 Eta Sa Manufacture Horlogere Suisse Device for controlling at least two electronic and/or mechanical functions of a portable object

Also Published As

Publication number Publication date
LU42502A1 (bg) 1962-12-10
GB1019008A (en) 1966-02-02
FR1310006A (bg) 1963-03-04
BE623441A (bg)
CH387747A (fr) 1965-02-15
ES281491A1 (es) 1963-05-01
NL284200A (bg)
DE1267311B (de) 1968-05-02

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